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Sentiment analysis is an area of natural language processing (NLP) which uses machine learning algorithms to interpret textual data. Recently, sentiment analysis has become an increasingly popular trend within social sciences studies led by computer scientists. NLP techniques have recently been applied to several political science topics, such as topic modeling and supervised machine learning. These techniques help political scientists recognize underlying ideology or misinformation present in texts as well as detect changes over time in political messages.  This study examines the application of topic modeling on political speeches to understand the recurring themes present in them. Recent speeches for last one year for the prime minister of India and key opposition party leader has been selected for the same. It delves into the coherence of the topics generated through the topic modeling method and the influence of text size on the coherence of political speech themes. The analysis focuses on determining the presence of positive or negative sentiments in public speeches and the utilization of Latent Dirichlet Allocation (LDA) and Coherence Measures as techniques for modeling and analyzing public speeches. The LDA algorithm operates by analyzing a speech and determining the number of words it includes, then identifying the topics. Paper, find one views to be extremely positive and other one with negative sentiments. Also, paper shares some of the key topics for the same

Sentiment analysis is an area of natural language processing (NLP) which uses machine learning algorithms to interpret textual data. Recently, sentiment analysis has become an increasingly popular trend within social sciences studies led by computer scientists. NLP techniques have recently been applied to several political science topics, such as topic modeling and supervised machine learning. These techniques help political scientists recognize underlying ideology or misinformation present in texts as well as detect changes over time in political messages.  This study examines the application of topic modeling on political speeches to understand the recurring themes present in them. Recent speeches for last one year for the prime minister of India and key opposition party leader has been selected for the same. It delves into the coherence of the topics generated through the topic modeling method and the influence of text size on the coherence of political speech themes. The analysis focuses on determining the presence of positive or negative sentiments in public speeches and the utilization of Latent Dirichlet Allocation (LDA) and Coherence Measures as techniques for modeling and analyzing public speeches. The LDA algorithm operates by analyzing a speech and determining the number of words it includes, then identifying the topics. Paper, find one views to be extremely positive and other one with negative sentiments. Also, paper shares some of the key topics for the same

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

The synthesis of carbon dots using plant leaves is a facile and economically viable approach. Here we report the development of lipid-coated red fluorescent carbon dots (LRCDs), a biocompatible and stable nanomaterial, utilizing Clitoria ternatea leaves. The red fluorescent carbon dots (RCDs) were prepared by hydrothermal method, followed by lipid coating using rotary evaporation for imaging-guided phototherapy. RCDs generate heat in tandem with NIR laser irradiation and could therefore be employed as a photothermal agent in cancer therapy. Additionally, the fluorescent nature of RCDs can be utilized in bioimaging. The fabricated RCDs displayed a characteristic fluorescent emission maximum at 672 nm with a shoulder peak at 723 nm. Hydrophobicity is a major drawback associated with the RCDs, which limits their therapeutic efficiency due to poor biodistribution and rapid clearance. To address this limitation, we coated RCDs with soya lecithin to generate hydrophilic LRCDs with better bioavailability and therapeutic effectiveness. Further analysis using MTT assay reveals high biocompatibility and a distinct photothermal ablation potency of LRCDs against L929 and 4T1 cells, respectively. LRCDs could potentially be synthesized on a large scale and used for a variety of applications due to their low-cost, and biocompatibility.

The viral infection spreads with the assistance of a host. Traditional antiviral therapies cannot provide long-term immunity against emerging and drug-resistant viral infections. Immunotherapy has evolved as an efficient approach for disease prevention and treatment, which include cancer, infections, inflammatory, and immune disorders. Immunomodulatory nanosystems can dramatically enhance therapeutic outcomes by combating many therapeutic challenges, such as poor immune stimulation and off-target adverse effects. Recently, immunomodulatory nanosystems have emerged as a potent antiviral strategy to intercept viral infections effectively. This review introduces major viral infections with their primary symptoms, route of transmission & targeted organ, and different stages of the viral life cycle with respective traditional blockers. The IMNs have an exceptional capacity for precisely modulating the immune system for therapeutic applications. The nano sized immunomodulatory systems permit the immune cells to interact with infectious agents enhancing lymphatic drainage and endocytosis by the over-reactive immune cells in the infected areas. Immune cells that can be modulated upon viral infection via various immunomodulatory nanosystems have been discussed. Advancement in theranostics can yield an accurate diagnosis, adequate treatment, and real-time screening of viral infections. Nanosystem-based drug delivery can continue to thrive in diagnosing, treating, and preventing viral infections. The curative medicine for remerging and drug-resistant viruses remains challenging, though certain systems have expanded our perception and initiated a new research domain in antiviral treatments.

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

The synthesis of carbon dots using plant leaves is a facile and economically viable approach. Here we report the development of lipid-coated red fluorescent carbon dots (LRCDs), a biocompatible and stable nanomaterial, utilizing Clitoria ternatea leaves. The red fluorescent carbon dots (RCDs) were prepared by hydrothermal method, followed by lipid coating using rotary evaporation for imaging-guided phototherapy. RCDs generate heat in tandem with NIR laser irradiation and could therefore be employed as a photothermal agent in cancer therapy. Additionally, the fluorescent nature of RCDs can be utilized in bioimaging. The fabricated RCDs displayed a characteristic fluorescent emission maximum at 672 nm with a shoulder peak at 723 nm. Hydrophobicity is a major drawback associated with the RCDs, which limits their therapeutic efficiency due to poor biodistribution and rapid clearance. To address this limitation, we coated RCDs with soya lecithin to generate hydrophilic LRCDs with better bioavailability and therapeutic effectiveness. Further analysis using MTT assay reveals high biocompatibility and a distinct photothermal ablation potency of LRCDs against L929 and 4T1 cells, respectively. LRCDs could potentially be synthesized on a large scale and used for a variety of applications due to their low-cost, and biocompatibility.

The viral infection spreads with the assistance of a host. Traditional antiviral therapies cannot provide long-term immunity against emerging and drug-resistant viral infections. Immunotherapy has evolved as an efficient approach for disease prevention and treatment, which include cancer, infections, inflammatory, and immune disorders. Immunomodulatory nanosystems can dramatically enhance therapeutic outcomes by combating many therapeutic challenges, such as poor immune stimulation and off-target adverse effects. Recently, immunomodulatory nanosystems have emerged as a potent antiviral strategy to intercept viral infections effectively. This review introduces major viral infections with their primary symptoms, route of transmission & targeted organ, and different stages of the viral life cycle with respective traditional blockers. The IMNs have an exceptional capacity for precisely modulating the immune system for therapeutic applications. The nano sized immunomodulatory systems permit the immune cells to interact with infectious agents enhancing lymphatic drainage and endocytosis by the over-reactive immune cells in the infected areas. Immune cells that can be modulated upon viral infection via various immunomodulatory nanosystems have been discussed. Advancement in theranostics can yield an accurate diagnosis, adequate treatment, and real-time screening of viral infections. Nanosystem-based drug delivery can continue to thrive in diagnosing, treating, and preventing viral infections. The curative medicine for remerging and drug-resistant viruses remains challenging, though certain systems have expanded our perception and initiated a new research domain in antiviral treatments.

The synthesis of carbon dots using plant leaves is a facile and economically viable approach. Here we report the development of lipid-coated red fluorescent carbon dots (LRCDs), a biocompatible and stable nanomaterial, utilizing Clitoria ternatea leaves. The red fluorescent carbon dots (RCDs) were prepared by hydrothermal method, followed by lipid coating using rotary evaporation for imaging-guided phototherapy. RCDs generate heat in tandem with NIR laser irradiation and could therefore be employed as a photothermal agent in cancer therapy. Additionally, the fluorescent nature of RCDs can be utilized in bioimaging. The fabricated RCDs displayed a characteristic fluorescent emission maximum at 672 nm with a shoulder peak at 723 nm. Hydrophobicity is a major drawback associated with the RCDs, which limits their therapeutic efficiency due to poor biodistribution and rapid clearance. To address this limitation, we coated RCDs with soya lecithin to generate hydrophilic LRCDs with better bioavailability and therapeutic effectiveness. Further analysis using MTT assay reveals high biocompatibility and a distinct photothermal ablation potency of LRCDs against L929 and 4T1 cells, respectively. LRCDs could potentially be synthesized on a large scale and used for a variety of applications due to their low-cost, and biocompatibility.

The viral infection spreads with the assistance of a host. Traditional antiviral therapies cannot provide long-term immunity against emerging and drug-resistant viral infections. Immunotherapy has evolved as an efficient approach for disease prevention and treatment, which include cancer, infections, inflammatory, and immune disorders. Immunomodulatory nanosystems can dramatically enhance therapeutic outcomes by combating many therapeutic challenges, such as poor immune stimulation and off-target adverse effects. Recently, immunomodulatory nanosystems have emerged as a potent antiviral strategy to intercept viral infections effectively. This review introduces major viral infections with their primary symptoms, route of transmission & targeted organ, and different stages of the viral life cycle with respective traditional blockers. The IMNs have an exceptional capacity for precisely modulating the immune system for therapeutic applications. The nano sized immunomodulatory systems permit the immune cells to interact with infectious agents enhancing lymphatic drainage and endocytosis by the over-reactive immune cells in the infected areas. Immune cells that can be modulated upon viral infection via various immunomodulatory nanosystems have been discussed. Advancement in theranostics can yield an accurate diagnosis, adequate treatment, and real-time screening of viral infections. Nanosystem-based drug delivery can continue to thrive in diagnosing, treating, and preventing viral infections. The curative medicine for remerging and drug-resistant viruses remains challenging, though certain systems have expanded our perception and initiated a new research domain in antiviral treatments.

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

The synthesis of carbon dots using plant leaves is a facile and economically viable approach. Here we report the development of lipid-coated red fluorescent carbon dots (LRCDs), a biocompatible and stable nanomaterial, utilizing Clitoria ternatea leaves. The red fluorescent carbon dots (RCDs) were prepared by hydrothermal method, followed by lipid coating using rotary evaporation for imaging-guided phototherapy. RCDs generate heat in tandem with NIR laser irradiation and could therefore be employed as a photothermal agent in cancer therapy. Additionally, the fluorescent nature of RCDs can be utilized in bioimaging. The fabricated RCDs displayed a characteristic fluorescent emission maximum at 672 nm with a shoulder peak at 723 nm. Hydrophobicity is a major drawback associated with the RCDs, which limits their therapeutic efficiency due to poor biodistribution and rapid clearance. To address this limitation, we coated RCDs with soya lecithin to generate hydrophilic LRCDs with better bioavailability and therapeutic effectiveness. Further analysis using MTT assay reveals high biocompatibility and a distinct photothermal ablation potency of LRCDs against L929 and 4T1 cells, respectively. LRCDs could potentially be synthesized on a large scale and used for a variety of applications due to their low-cost, and biocompatibility.

The viral infection spreads with the assistance of a host. Traditional antiviral therapies cannot provide long-term immunity against emerging and drug-resistant viral infections. Immunotherapy has evolved as an efficient approach for disease prevention and treatment, which include cancer, infections, inflammatory, and immune disorders. Immunomodulatory nanosystems can dramatically enhance therapeutic outcomes by combating many therapeutic challenges, such as poor immune stimulation and off-target adverse effects. Recently, immunomodulatory nanosystems have emerged as a potent antiviral strategy to intercept viral infections effectively. This review introduces major viral infections with their primary symptoms, route of transmission & targeted organ, and different stages of the viral life cycle with respective traditional blockers. The IMNs have an exceptional capacity for precisely modulating the immune system for therapeutic applications. The nano sized immunomodulatory systems permit the immune cells to interact with infectious agents enhancing lymphatic drainage and endocytosis by the over-reactive immune cells in the infected areas. Immune cells that can be modulated upon viral infection via various immunomodulatory nanosystems have been discussed. Advancement in theranostics can yield an accurate diagnosis, adequate treatment, and real-time screening of viral infections. Nanosystem-based drug delivery can continue to thrive in diagnosing, treating, and preventing viral infections. The curative medicine for remerging and drug-resistant viruses remains challenging, though certain systems have expanded our perception and initiated a new research domain in antiviral treatments.

We report the photophysical properties, self-assembly and biological evaluation of an isothiazolanthrone-based dye, 7-amino-6H-anthra[9,1-cd]isothiazol-6-one (AAT), which reveals anticancer properties and can be potentially used as dye for monitoring cell viability. The solvent-dependent photophysical studies suggest that the emission of AAT is sensitive to environment polarity due to which interesting changes in the colored emission may be observed owing to the charge transfer (CT) processes. AAT also self-assembles to tree-like branched morphologies and produce, a greenish emission inside the cells when imaged after short interval (15 mins) of incubation while a red fluorescence could be noted after 24 h. Interestingly, AAT also produce differential emission inside mouse normal cells as compared to its cancer cell lines since it possess anticancer activity. The experimental observations were also validated theoretically via computational modeling.

Maintenance of homeostasis is the primary function of the immune system. It detects the threats posed by pathogens, cancer, and tissue damage and mounts an immune response. The immunological memory dispensed by the immune system prevents or minimizes a second attack by the pathogen. Owing to the advent of new technologies, the comprehension of the immune system has widened, thus opening new horizons to modulate the immune system against any threat. Modulating the immune system with several biological and synthetic molecules mainly targets the innate and adaptive immune system to mount responses against several types of cancers, pathogenic infections, and autoimmune diseases. Polymers are widely used in several biological applications. The various characteristics of polymers, including molecular weight and tunable properties to modulate certain biological functions, have rendered them an ideal candidate for developing state-of-the-art therapeutic interventions. Extensive studies by various researchers across the globe have unraveled the potential of several synthetic and natural polymers to exhibit immunostimulatory activities. These polymers act as pattern recognition receptors (PRR) agonists to activate and engage the immune system. Despite polymeric nanoformulations and scaffolds being used to ferry molecular cargo, targeted delivery to specific cells, and interact with biological molecules, the innate potential of the polymers to influence the immune system is still little understood. From this perspective, this review discusses the very commonly used natural polysaccharides, which are also polymers, and their innate immunomodulatory potentials, mostly focusing on the molecular pathways influenced by the polysaccharides in the immunomodulation process. Further, the challenges associated with the application of polysaccharides and the potential solutions have also been discussed.

Fungal keratitis/mycotic keratitis or keratomycosis, is characterized by the inflammation of underlying stroma of corneal epithelium due to fungal infection. Multi-drug resistance and subsequent recurrence of infection limits the clinical outcomes of anti-fungal agents such as Amphotericin B and Natamycin; and therefore, demands research on newer anti-microbial strategies. In this study, the authors have synthesized and characterized ethosomes (IAEs) encapsulating a NIR dye, Indocyanine green (ICG), and an anti-fungal drug, Amphotericin B, for a combinational photothermal therapy of fungal keratitis. The in vitro anti-fungal efficacy of the IAEs is validated against Candida albicans by colony formation assay, calcofluor staining, and SEM analysis. The results indicate that the IAEs, upon NIR irradiation, displays a synergistic anti-fungal efficacy. The IAEs are highly biocompatible when tested using a human corneal epithelial (HCE) cell line model (in vitro) and a Draize eye test model in rabbits (in vivo). Further, it is observed that the IAEs,upon NIR laser exposure significantly eliminate the fungal infection in rat model of occular fungal keratitis. The research indicates that the IAEs nano-formulation exhibits a synergistic and sustained anti-fungal effect paving its way for further translation from bench to bedside for the efficient management of fungal keratitis.

The near-infrared (NIR) light-absorbing AgBiS2 nanoparticles can be excited by single-wavelength light, which is the primary characteristic of a photo responsive platform. Chemical synthesis of nanomaterials inevitably requires long-chain organic surfactants or polymers to stabilize them in the nano regime. These stabilizing molecules barricade the interaction of nanomaterials with biological cells. We have produced stabilizer-free (sf-AgBiS2) and polymer-coated (PEG-AgBiS2) nanoparticles; and assessed their NIR mediated anticancer and antibacterial activity to evaluate the effect of stabilizers. sf-AgBiS2 showed better antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus) and displayed excellent cytotoxicity against HeLa cells and live 3-D tumour spheroids compared to PEG-AgBiS2 both in presence and absence of NIR radiation. The photothermal therapy (PTT) results illustrated the tumour ablation ability of sf-AgBiS2, which converted light into heat effectively up to 53.3 °C under NIR irradiation. This work demonstrates the importance of synthesizing stabilizer-free nanoparticles to produce safe and highly active PTT agents.

Fungal keratitis/mycotic keratitis or keratomycosis, is characterized by the inflammation of underlying stroma of corneal epithelium due to fungal infection. Multi-drug resistance and subsequent recurrence of infection limits the clinical outcomes of anti-fungal agents such as Amphotericin B and Natamycin; and therefore, demands research on newer anti-microbial strategies. In this study, the authors have synthesized and characterized ethosomes (IAEs) encapsulating a NIR dye, Indocyanine green (ICG), and an anti-fungal drug, Amphotericin B, for a combinational photothermal therapy of fungal keratitis. The in vitro anti-fungal efficacy of the IAEs is validated against Candida albicans by colony formation assay, calcofluor staining, and SEM analysis. The results indicate that the IAEs, upon NIR irradiation, displays a synergistic anti-fungal efficacy. The IAEs are highly biocompatible when tested using a human corneal epithelial (HCE) cell line model (in vitro) and a Draize eye test model in rabbits (in vivo). Further, it is observed that the IAEs,upon NIR laser exposure significantly eliminate the fungal infection in rat model of occular fungal keratitis. The research indicates that the IAEs nano-formulation exhibits a synergistic and sustained anti-fungal effect paving its way for further translation from bench to bedside for the efficient management of fungal keratitis.

We report the photophysical properties, self-assembly and biological evaluation of an isothiazolanthrone-based dye, 7-amino-6H-anthra[9,1-cd]isothiazol-6-one (AAT), which reveals anticancer properties and can be potentially used as dye for monitoring cell viability. The solvent-dependent photophysical studies suggest that the emission of AAT is sensitive to environment polarity due to which interesting changes in the colored emission may be observed owing to the charge transfer (CT) processes. AAT also self-assembles to tree-like branched morphologies and produce, a greenish emission inside the cells when imaged after short interval (15 mins) of incubation while a red fluorescence could be noted after 24 h. Interestingly, AAT also produce differential emission inside mouse normal cells as compared to its cancer cell lines since it possess anticancer activity. The experimental observations were also validated theoretically via computational modeling.

The near-infrared (NIR) light-absorbing AgBiS2 nanoparticles can be excited by single-wavelength light, which is the primary characteristic of a photo responsive platform. Chemical synthesis of nanomaterials inevitably requires long-chain organic surfactants or polymers to stabilize them in the nano regime. These stabilizing molecules barricade the interaction of nanomaterials with biological cells. We have produced stabilizer-free (sf-AgBiS2) and polymer-coated (PEG-AgBiS2) nanoparticles; and assessed their NIR mediated anticancer and antibacterial activity to evaluate the effect of stabilizers. sf-AgBiS2 showed better antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus) and displayed excellent cytotoxicity against HeLa cells and live 3-D tumour spheroids compared to PEG-AgBiS2 both in presence and absence of NIR radiation. The photothermal therapy (PTT) results illustrated the tumour ablation ability of sf-AgBiS2, which converted light into heat effectively up to 53.3 °C under NIR irradiation. This work demonstrates the importance of synthesizing stabilizer-free nanoparticles to produce safe and highly active PTT agents.

The near-infrared (NIR) light-absorbing AgBiS2 nanoparticles can be excited by single-wavelength light, which is the primary characteristic of a photo responsive platform. Chemical synthesis of nanomaterials inevitably requires long-chain organic surfactants or polymers to stabilize them in the nano regime. These stabilizing molecules barricade the interaction of nanomaterials with biological cells. We have produced stabilizer-free (sf-AgBiS2) and polymer-coated (PEG-AgBiS2) nanoparticles; and assessed their NIR mediated anticancer and antibacterial activity to evaluate the effect of stabilizers. sf-AgBiS2 showed better antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus) and displayed excellent cytotoxicity against HeLa cells and live 3-D tumour spheroids compared to PEG-AgBiS2 both in presence and absence of NIR radiation. The photothermal therapy (PTT) results illustrated the tumour ablation ability of sf-AgBiS2, which converted light into heat effectively up to 53.3 °C under NIR irradiation. This work demonstrates the importance of synthesizing stabilizer-free nanoparticles to produce safe and highly active PTT agents.

Fungal keratitis/mycotic keratitis or keratomycosis, is characterized by the inflammation of underlying stroma of corneal epithelium due to fungal infection. Multi-drug resistance and subsequent recurrence of infection limits the clinical outcomes of anti-fungal agents such as Amphotericin B and Natamycin; and therefore, demands research on newer anti-microbial strategies. In this study, the authors have synthesized and characterized ethosomes (IAEs) encapsulating a NIR dye, Indocyanine green (ICG), and an anti-fungal drug, Amphotericin B, for a combinational photothermal therapy of fungal keratitis. The in vitro anti-fungal efficacy of the IAEs is validated against Candida albicans by colony formation assay, calcofluor staining, and SEM analysis. The results indicate that the IAEs, upon NIR irradiation, displays a synergistic anti-fungal efficacy. The IAEs are highly biocompatible when tested using a human corneal epithelial (HCE) cell line model (in vitro) and a Draize eye test model in rabbits (in vivo). Further, it is observed that the IAEs,upon NIR laser exposure significantly eliminate the fungal infection in rat model of occular fungal keratitis. The research indicates that the IAEs nano-formulation exhibits a synergistic and sustained anti-fungal effect paving its way for further translation from bench to bedside for the efficient management of fungal keratitis.

The near-infrared (NIR) light-absorbing AgBiS2 nanoparticles can be excited by single-wavelength light, which is the primary characteristic of a photo responsive platform. Chemical synthesis of nanomaterials inevitably requires long-chain organic surfactants or polymers to stabilize them in the nano regime. These stabilizing molecules barricade the interaction of nanomaterials with biological cells. We have produced stabilizer-free (sf-AgBiS2) and polymer-coated (PEG-AgBiS2) nanoparticles; and assessed their NIR mediated anticancer and antibacterial activity to evaluate the effect of stabilizers. sf-AgBiS2 showed better antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus) and displayed excellent cytotoxicity against HeLa cells and live 3-D tumour spheroids compared to PEG-AgBiS2 both in presence and absence of NIR radiation. The photothermal therapy (PTT) results illustrated the tumour ablation ability of sf-AgBiS2, which converted light into heat effectively up to 53.3 °C under NIR irradiation. This work demonstrates the importance of synthesizing stabilizer-free nanoparticles to produce safe and highly active PTT agents.

We report the photophysical properties, self-assembly and biological evaluation of an isothiazolanthrone-based dye, 7-amino-6H-anthra[9,1-cd]isothiazol-6-one (AAT), which reveals anticancer properties and can be potentially used as dye for monitoring cell viability. The solvent-dependent photophysical studies suggest that the emission of AAT is sensitive to environment polarity due to which interesting changes in the colored emission may be observed owing to the charge transfer (CT) processes. AAT also self-assembles to tree-like branched morphologies and produce, a greenish emission inside the cells when imaged after short interval (15 mins) of incubation while a red fluorescence could be noted after 24 h. Interestingly, AAT also produce differential emission inside mouse normal cells as compared to its cancer cell lines since it possess anticancer activity. The experimental observations were also validated theoretically via computational modeling.

Fungal keratitis/mycotic keratitis or keratomycosis, is characterized by the inflammation of underlying stroma of corneal epithelium due to fungal infection. Multi-drug resistance and subsequent recurrence of infection limits the clinical outcomes of anti-fungal agents such as Amphotericin B and Natamycin; and therefore, demands research on newer anti-microbial strategies. In this study, the authors have synthesized and characterized ethosomes (IAEs) encapsulating a NIR dye, Indocyanine green (ICG), and an anti-fungal drug, Amphotericin B, for a combinational photothermal therapy of fungal keratitis. The in vitro anti-fungal efficacy of the IAEs is validated against Candida albicans by colony formation assay, calcofluor staining, and SEM analysis. The results indicate that the IAEs, upon NIR irradiation, displays a synergistic anti-fungal efficacy. The IAEs are highly biocompatible when tested using a human corneal epithelial (HCE) cell line model (in vitro) and a Draize eye test model in rabbits (in vivo). Further, it is observed that the IAEs,upon NIR laser exposure significantly eliminate the fungal infection in rat model of occular fungal keratitis. The research indicates that the IAEs nano-formulation exhibits a synergistic and sustained anti-fungal effect paving its way for further translation from bench to bedside for the efficient management of fungal keratitis.

We report the photophysical properties, self-assembly and biological evaluation of an isothiazolanthrone-based dye, 7-amino-6H-anthra[9,1-cd]isothiazol-6-one (AAT), which reveals anticancer properties and can be potentially used as dye for monitoring cell viability. The solvent-dependent photophysical studies suggest that the emission of AAT is sensitive to environment polarity due to which interesting changes in the colored emission may be observed owing to the charge transfer (CT) processes. AAT also self-assembles to tree-like branched morphologies and produce, a greenish emission inside the cells when imaged after short interval (15 mins) of incubation while a red fluorescence could be noted after 24 h. Interestingly, AAT also produce differential emission inside mouse normal cells as compared to its cancer cell lines since it possess anticancer activity. The experimental observations were also validated theoretically via computational modeling.

The near-infrared (NIR) light-absorbing AgBiS2 nanoparticles can be excited by single-wavelength light, which is the primary characteristic of a photo responsive platform. Chemical synthesis of nanomaterials inevitably requires long-chain organic surfactants or polymers to stabilize them in the nano regime. These stabilizing molecules barricade the interaction of nanomaterials with biological cells. We have produced stabilizer-free (sf-AgBiS2) and polymer-coated (PEG-AgBiS2) nanoparticles; and assessed their NIR mediated anticancer and antibacterial activity to evaluate the effect of stabilizers. sf-AgBiS2 showed better antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus) and displayed excellent cytotoxicity against HeLa cells and live 3-D tumour spheroids compared to PEG-AgBiS2 both in presence and absence of NIR radiation. The photothermal therapy (PTT) results illustrated the tumour ablation ability of sf-AgBiS2, which converted light into heat effectively up to 53.3 °C under NIR irradiation. This work demonstrates the importance of synthesizing stabilizer-free nanoparticles to produce safe and highly active PTT agents.

Fungal keratitis/mycotic keratitis or keratomycosis, is characterized by the inflammation of underlying stroma of corneal epithelium due to fungal infection. Multi-drug resistance and subsequent recurrence of infection limits the clinical outcomes of anti-fungal agents such as Amphotericin B and Natamycin; and therefore, demands research on newer anti-microbial strategies. In this study, the authors have synthesized and characterized ethosomes (IAEs) encapsulating a NIR dye, Indocyanine green (ICG), and an anti-fungal drug, Amphotericin B, for a combinational photothermal therapy of fungal keratitis. The in vitro anti-fungal efficacy of the IAEs is validated against Candida albicans by colony formation assay, calcofluor staining, and SEM analysis. The results indicate that the IAEs, upon NIR irradiation, displays a synergistic anti-fungal efficacy. The IAEs are highly biocompatible when tested using a human corneal epithelial (HCE) cell line model (in vitro) and a Draize eye test model in rabbits (in vivo). Further, it is observed that the IAEs,upon NIR laser exposure significantly eliminate the fungal infection in rat model of occular fungal keratitis. The research indicates that the IAEs nano-formulation exhibits a synergistic and sustained anti-fungal effect paving its way for further translation from bench to bedside for the efficient management of fungal keratitis.

RNA interference (RNAi) has increased the possibility of restoring RNA drug targets for cancer treatment. Small interfering RNA (siRNA) is a promising therapeutic RNAi tool that targets the defective gene by inhibiting its mRNA expression and stopping its translation. However, siRNAs have flaws like poor intracellular trafficking, RNase degradation, rapid kidney filtration, off-targeting, and toxicity, which limit their therapeutic efficiency. Nanocarriers (NCs) have been designed to overcome such flaws and increase antitumor activity. Combining siRNA and anticancer drugs can give synergistic effects in cancer cells, making them a significant gene-modification tool in cancer therapy. Our discussion of NCs-mediated siRNA delivery in this review includes their mechanism, limitations, and advantages in comparison with naked siRNA delivery. We will also discuss organic NCs (polymers and lipids) and inorganic NCs (quantum dots, carbon nanotubes, and gold) that have been reported for extensive delivery of therapeutic siRNA to tumor sites. Finally, we will conclude by discussing the studies based on organic and inorganic NCs-mediated siRNA drug delivery systems conducted in the years 2020 and 2021. © 2022 American Chemical Society.

RNA interference (RNAi) has increased the possibility of restoring RNA drug targets for cancer treatment. Small interfering RNA (siRNA) is a promising therapeutic RNAi tool that targets the defective gene by inhibiting its mRNA expression and stopping its translation. However, siRNAs have flaws like poor intracellular trafficking, RNase degradation, rapid kidney filtration, off-targeting, and toxicity, which limit their therapeutic efficiency. Nanocarriers (NCs) have been designed to overcome such flaws and increase antitumor activity. Combining siRNA and anticancer drugs can give synergistic effects in cancer cells, making them a significant gene-modification tool in cancer therapy. Our discussion of NCs-mediated siRNA delivery in this review includes their mechanism, limitations, and advantages in comparison with naked siRNA delivery. We will also discuss organic NCs (polymers and lipids) and inorganic NCs (quantum dots, carbon nanotubes, and gold) that have been reported for extensive delivery of therapeutic siRNA to tumor sites. Finally, we will conclude by discussing the studies based on organic and inorganic NCs-mediated siRNA drug delivery systems conducted in the years 2020 and 2021. © 2022 American Chemical Society.

RNA interference (RNAi) has increased the possibility of restoring RNA drug targets for cancer treatment. Small interfering RNA (siRNA) is a promising therapeutic RNAi tool that targets the defective gene by inhibiting its mRNA expression and stopping its translation. However, siRNAs have flaws like poor intracellular trafficking, RNase degradation, rapid kidney filtration, off-targeting, and toxicity, which limit their therapeutic efficiency. Nanocarriers (NCs) have been designed to overcome such flaws and increase antitumor activity. Combining siRNA and anticancer drugs can give synergistic effects in cancer cells, making them a significant gene-modification tool in cancer therapy. Our discussion of NCs-mediated siRNA delivery in this review includes their mechanism, limitations, and advantages in comparison with naked siRNA delivery. We will also discuss organic NCs (polymers and lipids) and inorganic NCs (quantum dots, carbon nanotubes, and gold) that have been reported for extensive delivery of therapeutic siRNA to tumor sites. Finally, we will conclude by discussing the studies based on organic and inorganic NCs-mediated siRNA drug delivery systems conducted in the years 2020 and 2021. © 2022 American Chemical Society.

One of the most effective cancer therapies, cancer immunotherapy has produced outstanding outcomes in the field of cancer treatment. However, the cost is excessive, which limits its applicability. A smart way to address this issue would be to apply the knowledge gained through immunotherapy to develop strategies for the immunoprevention of cancer. The use of cancer vaccines is one of the most popular methods of immunoprevention. This paper reviews the technologies and processes that support the advantages of cancer immunoprevention over traditional cancer immunotherapies. Nanoparticle drug delivery systems and nanoparticle-based nano-vaccines have been employed in the past for cancer immunotherapy. This paper outlines numerous immunoprevention strategies and how nanotechnology can be applied in immunoprevention. To comprehend the non-clinical and clinical evaluation of these cancer vaccines through clinical studies is essential for acceptance of the vaccines. © 2022 by the authors.

Axial suspension plasma spraying (ASPS) is an alternative technique to atmospheric plasma spraying (APS), which uses a suspension of much finer powders (<5-micron particle size) as the feedstock. It can produce more refined microstructures than APS for biomedical implants. This paper highlights the influence of incorporated graphene nanoplatelets (GNPs) on the behavior of ASPS hydroxyapatite (HAp) coatings. The characterization of the ASPS coatings (HAp + varying GNP contents) was carried out using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), confocal Raman microscopy (CRM), white light interferometry (WLI), and contact angle measurements. The evaluation of the mechanical properties such as the hardness, roughness, adhesion strength, and porosity was carried out, along with a fretting wear performance. Additionally, the biocompatibility of the Hap + GNP coatings was evaluated using cytotoxicity testing which revealed a decrease in the cell viability from 92.7% to 85.4%, with an increase in the GNP wt.%. The visualization of the cell's components was carried out using SEM and Laser Scanning Microscopy. Furthermore, the changes in the genetic expression of the various cellular markers were assessed to analyze the epigenetic changes in human mesenchymal stem cells. The gene expression changes suggested that GNPs upregulated the proliferation marker and downregulated the pluripotent markers by a minimum of three folds., This work was supported under the Indo-Swedish Join Network grant, 2019, bythe Department of Science and Technology, India (DST/INT/SWD/VR/P-15/2019) and the SwedishResearch Council (Dnr. 2018-07061). The authors acknowledge Stefan Björklund for helping withthe spraying of coatings and providing valuable suggestions during spraying, as well as FrancisTourenne, MediCoat, France, for providing Hap powder to prepare the suspensions. The authors arethankful to VIT for extending support to perform Raman microscopy

Axial suspension plasma spraying (ASPS) is an alternative technique to atmospheric plasma spraying (APS), which uses a suspension of much finer powders (<5-micron particle size) as the feedstock. It can produce more refined microstructures than APS for biomedical implants. This paper highlights the influence of incorporated graphene nanoplatelets (GNPs) on the behavior of ASPS hydroxyapatite (HAp) coatings. The characterization of the ASPS coatings (HAp + varying GNP contents) was carried out using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), confocal Raman microscopy (CRM), white light interferometry (WLI), and contact angle measurements. The evaluation of the mechanical properties such as the hardness, roughness, adhesion strength, and porosity was carried out, along with a fretting wear performance. Additionally, the biocompatibility of the Hap + GNP coatings was evaluated using cytotoxicity testing which revealed a decrease in the cell viability from 92.7% to 85.4%, with an increase in the GNP wt.%. The visualization of the cell's components was carried out using SEM and Laser Scanning Microscopy. Furthermore, the changes in the genetic expression of the various cellular markers were assessed to analyze the epigenetic changes in human mesenchymal stem cells. The gene expression changes suggested that GNPs upregulated the proliferation marker and downregulated the pluripotent markers by a minimum of three folds., This work was supported under the Indo-Swedish Join Network grant, 2019, bythe Department of Science and Technology, India (DST/INT/SWD/VR/P-15/2019) and the SwedishResearch Council (Dnr. 2018-07061). The authors acknowledge Stefan Björklund for helping withthe spraying of coatings and providing valuable suggestions during spraying, as well as FrancisTourenne, MediCoat, France, for providing Hap powder to prepare the suspensions. The authors arethankful to VIT for extending support to perform Raman microscopy

Chemo-photothermal therapy is one of the emerging therapies for treating triple-negative breast cancer. In this study, we have used ionotropic gelation method to fabricate chitosan and IR806 dye-based polyelectrolyte complex (CIR-PEx) nanoparticles. These nano-complexes were in size range of 125 ± 20 nm. The complexation of IR 806 dye with chitosan improved photostability, photothermal transduction, and showed excellent biocompatibility. Cancer cells treated with CIR-PEx NPs enhanced intracellular uptake within 5 h of incubation and also displayed mitochondrial localization. With the combination of CIR-PEx NPs and a chemotherapeutic agent (i.e., mitoxantrone, MTX), a significant decline in cancer cell viability was observed in both 2D and 3D cell culture models. The chemo-photothermal effect of CIR-PEx NPs + MTX augmented apoptosis in cancer cells when irradiated with NIR light. Furthermore, when tested in the 4 T1-tumor model, the chemo-photothermal therapy showed a drastic decline in tumor volume and inhibited metastatic lung nodules. The localized hyperthermia caused by photothermal therapy reduced the primary tumor burden, and the chemotherapeutic activity of mitoxantrone further complemented by inhibiting the spread of cancer cells. The proposed chemo-photothermal therapy combination could be a promising strategy for treating triple-negative metastatic breast cancer. © 2022 Elsevier B.V.

Herbal biomolecules are the agents that represent a diverse variety of organic compounds obtained mainly from plant sources and exhibit a variety of biological functions. The herbal biomolecules majorly constitute the primary and secondary plant metabolites. The current chapter focuses on the chemistry of such herbal biological molecules. The major biomolecules listed include carbohydrates, oils, resins, alkaloids, glycosides and tannins and their classified derivatives. © 2022 Elsevier Inc. All rights reserved.

This study reports a hybrid lipo-polymeric nanosystem (PDPC NPs) synthesized by a modified hydrogel-isolation technique. The ability of the nanosystem to encapsulate hydrophilic and hydrophobic molecules has been demonstrated, and their enhanced cellular uptake has been observed in vitro. The PDPC NPs, surface coated with gold by in situ reduction of chloroauric acid (PDPC-Au NPs), showed a photothermal transduction efficacy of ∼65%. The PDPC-Au NPs demonstrated an increase in intracellular ROS, triggered DNA damage and resulted in apoptotic cell death when tested against breast cancer cells (MCF-7). The disintegration of PDPC-Au NPs into smaller nanoparticles with near-infrared (NIR) laser irradiation was understood using transmission electron microscopy imaging. The lipo-polymeric hybrid nanosystem exhibited plasmon-enhanced fluorescence when loaded with IR780 (a NIR dye), followed by surface coating with gold (PDPC-IR-Au NPs). This paper is one of the first reports on the plasmon-enhanced fluorescence within a nanosystem by simple surface coating of Au, to the best of our knowledge. This plasmon-enhanced fluorescence was unique to the lipo-polymeric hybrid system, as the same was not observed with a liposomal nanosystem. The plasmon-enhanced fluorescence of PDPC-IR-Au NPs, when applied for imaging cancer cells and zebrafish embryos, showed a strong fluorescence signal at minimal concentrations of the dye. The PDPC-IR-Au NPs were also applied for photothermal therapy of breast cancer in vitro and in vivo, and the results depicted significant therapeutic benefits. © 2022 The Royal Society of Chemistry.

One of the most effective cancer therapies, cancer immunotherapy has produced outstanding outcomes in the field of cancer treatment. However, the cost is excessive, which limits its applicability. A smart way to address this issue would be to apply the knowledge gained through immunotherapy to develop strategies for the immunoprevention of cancer. The use of cancer vaccines is one of the most popular methods of immunoprevention. This paper reviews the technologies and processes that support the advantages of cancer immunoprevention over traditional cancer immunotherapies. Nanoparticle drug delivery systems and nanoparticle-based nano-vaccines have been employed in the past for cancer immunotherapy. This paper outlines numerous immunoprevention strategies and how nanotechnology can be applied in immunoprevention. To comprehend the non-clinical and clinical evaluation of these cancer vaccines through clinical studies is essential for acceptance of the vaccines. © 2022 by the authors.

In chronic wounds, rapid identification of the bacterial type is critical for immediate clinical assessment. A novel, cost-effective, and label-free electrochemical nanobiosensor was developed with the help of an indigenously fabricated carbon paste working electrode to rapidly identify the bacterial type. The proposed platform made use of gold nanoparticles (AuNPs) to boost electrochemical activity, and the strong affinity of boronic acid moieties for diols allowed for detection and differentiation of gram + ve and gram -ve bacteria on the same platform. A scalable and robust miniaturized Electrochemical Cell (E-Cell) designed for the developed electrodes assisted in reducing sample waste, detection time, and Limit of Detection (LOD). Within 15 min, the proposed nano biosensing platform identified Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria with an excellent recovery rate for the blind samples. Because of its size and the extra lipopolysaccharides (LPS) layer containing diols, the bioelectrode demonstrated a superior response to E. coli, effectively distinguishing it from S. aureus. Furthermore, the proposed biosensing platform demonstrated an excellent shelf-life and reproducibility with acceptable selectivity and exhibited an excellent specificity towards bacteria, making it an ideal candidate for rapid identification of the bacterial type. © 2022 Elsevier B.V.

Herbal biomolecules (HBs) are plant components with discrete biological activities and therapeutic potentials. Historically these molecules were used in traditional medicinal systems for the treatment of various ailments. Ongoing research on ethnobotanical use of these HBs provide a scientific rationale for their use as potential nutraceuticals. This chapter reviews such plant-based bioactive molecules that can be used as food supplements and nutraceuticals. “Nutraceuticals” is a broad term that sums up all the food products with general health to prevent and treat any disease conditions. These products have generated great demand all over the world. The global market of nutraceuticals is estimated to be 198.7 billion USD in 2016, increasing with a 7.5% compound annual growth rate. This chapter also focuses on a diverse range of plant-based bioactive nutraceuticals based on their food sources, their pharmacological activities, and chemicals. Upon further development, these materials can yield efficient nutraceuticals agents that can contribute to society’s better health. © 2022 Elsevier Inc. All rights reserved.

Purpose: Colorectal cancer (CRC) is the cancer of the colon and rectum. Recent research has found a link between CRC and human gut microbiota. This review explores the effect of gut microbiota on colorectal carcinogenesis and the development of chemoresistance. Methods: A literature overview was performed to identify the gut microbiota species that showed altered abundance in CRC patients and the mechanisms by which some of them aid in the development of chemoresistance. Results: Types of gut microbiota present and methods of analyzing them were discussed. We observed that numerous microbiota showed altered abundance in CRC patients and could act as a biomarker for CRC diagnosis and treatment. Further, it was demonstrated that microbes also have a role in the development of chemoresistance by mechanisms like immune system activation, drug modification, and autophagy modulation. Finally, the key issue of the growing global problem of antimicrobial resistance and its relationship with CRC was highlighted. Conclusion: This review discussed the role of gut microbiota dysbiosis on colorectal cancer progression and the development of chemoresistance. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

One of the most effective cancer therapies, cancer immunotherapy has produced outstanding outcomes in the field of cancer treatment. However, the cost is excessive, which limits its applicability. A smart way to address this issue would be to apply the knowledge gained through immunotherapy to develop strategies for the immunoprevention of cancer. The use of cancer vaccines is one of the most popular methods of immunoprevention. This paper reviews the technologies and processes that support the advantages of cancer immunoprevention over traditional cancer immunotherapies. Nanoparticle drug delivery systems and nanoparticle-based nano-vaccines have been employed in the past for cancer immunotherapy. This paper outlines numerous immunoprevention strategies and how nanotechnology can be applied in immunoprevention. To comprehend the non-clinical and clinical evaluation of these cancer vaccines through clinical studies is essential for acceptance of the vaccines. © 2022 by the authors.

Purpose: Colorectal cancer (CRC) is the cancer of the colon and rectum. Recent research has found a link between CRC and human gut microbiota. This review explores the effect of gut microbiota on colorectal carcinogenesis and the development of chemoresistance. Methods: A literature overview was performed to identify the gut microbiota species that showed altered abundance in CRC patients and the mechanisms by which some of them aid in the development of chemoresistance. Results: Types of gut microbiota present and methods of analyzing them were discussed. We observed that numerous microbiota showed altered abundance in CRC patients and could act as a biomarker for CRC diagnosis and treatment. Further, it was demonstrated that microbes also have a role in the development of chemoresistance by mechanisms like immune system activation, drug modification, and autophagy modulation. Finally, the key issue of the growing global problem of antimicrobial resistance and its relationship with CRC was highlighted. Conclusion: This review discussed the role of gut microbiota dysbiosis on colorectal cancer progression and the development of chemoresistance. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Chemo-photothermal therapy is one of the emerging therapies for treating triple-negative breast cancer. In this study, we have used ionotropic gelation method to fabricate chitosan and IR806 dye-based polyelectrolyte complex (CIR-PEx) nanoparticles. These nano-complexes were in size range of 125 ± 20 nm. The complexation of IR 806 dye with chitosan improved photostability, photothermal transduction, and showed excellent biocompatibility. Cancer cells treated with CIR-PEx NPs enhanced intracellular uptake within 5 h of incubation and also displayed mitochondrial localization. With the combination of CIR-PEx NPs and a chemotherapeutic agent (i.e., mitoxantrone, MTX), a significant decline in cancer cell viability was observed in both 2D and 3D cell culture models. The chemo-photothermal effect of CIR-PEx NPs + MTX augmented apoptosis in cancer cells when irradiated with NIR light. Furthermore, when tested in the 4 T1-tumor model, the chemo-photothermal therapy showed a drastic decline in tumor volume and inhibited metastatic lung nodules. The localized hyperthermia caused by photothermal therapy reduced the primary tumor burden, and the chemotherapeutic activity of mitoxantrone further complemented by inhibiting the spread of cancer cells. The proposed chemo-photothermal therapy combination could be a promising strategy for treating triple-negative metastatic breast cancer. © 2022 Elsevier B.V.

In chronic wounds, rapid identification of the bacterial type is critical for immediate clinical assessment. A novel, cost-effective, and label-free electrochemical nanobiosensor was developed with the help of an indigenously fabricated carbon paste working electrode to rapidly identify the bacterial type. The proposed platform made use of gold nanoparticles (AuNPs) to boost electrochemical activity, and the strong affinity of boronic acid moieties for diols allowed for detection and differentiation of gram + ve and gram -ve bacteria on the same platform. A scalable and robust miniaturized Electrochemical Cell (E-Cell) designed for the developed electrodes assisted in reducing sample waste, detection time, and Limit of Detection (LOD). Within 15 min, the proposed nano biosensing platform identified Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria with an excellent recovery rate for the blind samples. Because of its size and the extra lipopolysaccharides (LPS) layer containing diols, the bioelectrode demonstrated a superior response to E. coli, effectively distinguishing it from S. aureus. Furthermore, the proposed biosensing platform demonstrated an excellent shelf-life and reproducibility with acceptable selectivity and exhibited an excellent specificity towards bacteria, making it an ideal candidate for rapid identification of the bacterial type. © 2022 Elsevier B.V.

Herbal biomolecules (HBs) are plant components with discrete biological activities and therapeutic potentials. Historically these molecules were used in traditional medicinal systems for the treatment of various ailments. Ongoing research on ethnobotanical use of these HBs provide a scientific rationale for their use as potential nutraceuticals. This chapter reviews such plant-based bioactive molecules that can be used as food supplements and nutraceuticals. “Nutraceuticals” is a broad term that sums up all the food products with general health to prevent and treat any disease conditions. These products have generated great demand all over the world. The global market of nutraceuticals is estimated to be 198.7 billion USD in 2016, increasing with a 7.5% compound annual growth rate. This chapter also focuses on a diverse range of plant-based bioactive nutraceuticals based on their food sources, their pharmacological activities, and chemicals. Upon further development, these materials can yield efficient nutraceuticals agents that can contribute to society’s better health. © 2022 Elsevier Inc. All rights reserved.