7 results on '"Ho TL"'
Search Results
2. FGF23 facilitates IL-1β synthesis in rheumatoid arthritis through activating PI3K, Akt, and NF-κB pathways.
- Author
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Hu SL, Thadevoos LA, Ho TL, Lin YY, Chen HT, Huang CC, Su CM, and Tang CH
- Subjects
- Female, Humans, Male, Cells, Cultured, Fibroblast Growth Factors metabolism, NF-kappa B metabolism, Phosphatidylinositol 3-Kinases metabolism, Proto-Oncogene Proteins c-akt metabolism, Synovial Membrane drug effects, Synovial Membrane metabolism, Arthritis, Rheumatoid metabolism, Fibroblast Growth Factor-23, Fibroblasts drug effects, Fibroblasts metabolism, Interleukin-1beta metabolism, Signal Transduction drug effects
- Abstract
Rheumatoid arthritis (RA) is a well-known autoimmune disorder related with joint pain, joint swelling, cartilage and bone degradation as well as deformity. Fibroblast growth factor 23 (FGF23) is an endocrine factor of the FGF family primarily produced by osteocytes and osteoblasts, involves an essential effect in pathogenesis of RA. IL-1β is a vital proinflammatory factor in the development of RA. However, the role of FGF23 on IL-1β synthesis in RA has not been fully explored. Our analysis of database revealed higher levels of FGF23 and IL-1β in RA samples compared with healthy controls. High-throughput screening demonstrated that IL-1β is a potential candidate factor after FGF23 treatment in RA synovial fibroblasts (RASFs). FGF23 concentration dependently promotes IL-1β synthesis in RASFs. FGF23 enhances IL-1β expression by activating the PI3K, Akt, and NF-κB pathways. Our findings support the notion that FGF23 is a promising target in the remedy of RA., (© 2024 Wiley Periodicals LLC.)
- Published
- 2024
- Full Text
- View/download PDF
3. Particulate matter facilitates amphiregulin-dependent lung cancer proliferation through glutamine metabolism.
- Author
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Jiang YJ, Ho TL, Chao CC, He XY, Chen PC, Cheng FJ, Huang WC, Huang CL, Liu PI, and Tang CH
- Subjects
- Humans, Animals, A549 Cells, Signal Transduction, Mice, Cell Line, Tumor, TOR Serine-Threonine Kinases metabolism, Amino Acid Transport System ASC metabolism, Amino Acid Transport System ASC genetics, Minor Histocompatibility Antigens, Amphiregulin metabolism, Glutamine metabolism, Cell Proliferation, Lung Neoplasms metabolism, Lung Neoplasms pathology, Particulate Matter adverse effects
- Abstract
Although many cohort studies have reported that long-term exposure to particulate matter (PM) causes lung cancer, the molecular mechanisms underlying the PM-induced increases in lung cancer progression remain unclear. We applied the lung cancer cell line A549 (Parental; A549.Par) to PM for an extended period to establish a mimic PM-exposed lung cancer cell line, A549.PM. Our results indicate that A549.PM exhibits higher cell growth and proliferation abilities compared to A549.Par cells in vitro and in vivo . The RNA sequencing analysis found amphiregulin (AREG) plays a critical role in PM-induced cell proliferation. We observed that PM increases AREG-dependent lung cancer proliferation through glutamine metabolism. In addition, the EGFR/PI3K/AKT/mTOR signaling pathway is involved in PM-induced solute carrier family A1 member 5 (SLC1A5) expression and glutamine metabolism. Our findings offer important insights into how lung cancer proliferation develops upon exposure to PM., Competing Interests: Competing Interests: The authors have declared that no competing interest exists., (© The author(s).)
- Published
- 2024
- Full Text
- View/download PDF
4. Monophosphoryl lipid A and poly I:C combination enhances immune responses of equine influenza virus vaccine.
- Author
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Lee DH, Lee J, Ahn SY, Ho TL, Kim K, and Ko EJ
- Subjects
- Animals, Mice, Female, Antibodies, Viral blood, Horses immunology, Horse Diseases immunology, Horse Diseases prevention & control, Horse Diseases virology, Immunoglobulin G blood, Immunologic Memory, Influenza Vaccines immunology, Influenza Vaccines administration & dosage, Poly I-C pharmacology, Poly I-C administration & dosage, Lipid A analogs & derivatives, Lipid A pharmacology, Lipid A administration & dosage, Lipid A immunology, Orthomyxoviridae Infections immunology, Orthomyxoviridae Infections prevention & control, Orthomyxoviridae Infections veterinary, Adjuvants, Immunologic administration & dosage, Adjuvants, Immunologic pharmacology, Influenza A Virus, H3N8 Subtype immunology
- Abstract
Equine influenza is a contagious respiratory disease caused by H3N8 type A influenza virus. Vaccination against equine influenza is conducted regularly; however, infection still occurs globally because of the short immunity duration and suboptimal efficacy of current vaccines. Hence the objective of this study was to investigate whether an adjuvant combination can improve immune responses to equine influenza virus (EIV) vaccines. Seventy-two mice were immunized with an EIV vaccine only or with monophosphoryl lipid A (MPL), polyinosinic-polycytidylic acid (Poly I:C), or MPL + Poly I:C. Prime immunization was followed by boost immunization after 2 weeks. Mice were euthanized at 4, 8, and 32 weeks post-prime immunization, respectively. Sera were collected to determine humoral response. Bone marrow, spleen, and lung samples were harvested to determine memory cell responses, antigen-specific T-cell proliferation, and lung viral titers. MPL + Poly I:C resulted in the highest IgG, IgG1, and IgG2a antibodies and hemagglutination inhibition titers among the groups and sustained their levels until 32 weeks post-prime immunization. The combination enhanced memory B cell responses in the bone marrow and spleen. At 8 weeks post-prime immunization, the combination induced higher CD8+ central memory T cell frequencies in the lungs and CD8+ central memory T cells in the spleen. In addition, the combination group exhibited enhanced antigen-specific T cell proliferation, except for CD4+ T cells in the lungs. Our results demonstrated improved immune responses when using MPL + Poly I:C in EIV vaccines by inducing enhanced humoral responses, memory cell responses, and antigen-specific T cell proliferation., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper, (Copyright © 2024. Published by Elsevier B.V.)
- Published
- 2024
- Full Text
- View/download PDF
5. Chlorogenic acid prevents ovariectomized-induced bone loss by facilitating osteoblast functions and suppressing osteoclast formation.
- Author
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Ho CY, Tang CH, Ho TL, Wang WL, and Yao CH
- Subjects
- Humans, Rats, Female, Animals, Chlorogenic Acid pharmacology, Chlorogenic Acid therapeutic use, Chlorogenic Acid metabolism, Osteogenesis, Osteoblasts metabolism, Cell Differentiation, Osteoclasts, Osteoporosis metabolism
- Abstract
Osteoporosis is a usual bone disease in aging populations, principally in postmenopausal women. Anti-resorptive and anabolic drugs have been applied to prevent and cure osteoporosis and are associated to a different of adverse effects. Du-Zhong is usually applied in Traditional Chinese Medicine to strengthen bone, regulate bone metabolism, and treat osteoporosis. Chlorogenic acid is a major polyphenol in Du-Zhong. In the current study, chlorogenic acid was found to enhance osteoblast proliferation and differentiation. Chlorogenic acid also inhibits the RANKL-induced osteoclastogenesis. Notably, ovariectomy significantly decreased bone volume and mechanical properties in the ovariectomized (OVX) rats. Administration of chlorogenic acid antagonized OVX-induced bone loss. Taken together, chlorogenic acid seems to be a hopeful molecule for the development of novel anti-osteoporosis treatment.
- Published
- 2024
- Full Text
- View/download PDF
6. CXCL13 promotes TNF-α synthesis in rheumatoid arthritis through activating ERK/p38 pathway and inhibiting miR-330-3p generation.
- Author
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Achudhan D, Lai YL, Lin YY, Huang YL, Tsai CH, Ho TL, Ko CY, Fong YC, Huang CC, and Tang CH
- Subjects
- Animals, Tumor Necrosis Factor-alpha pharmacology, Arthritis, Rheumatoid genetics, Autoimmune Diseases, Arthritis, Experimental, MicroRNAs genetics
- Abstract
Rheumatoid arthritis (RA) is a well-known autoimmune disorder associated with joint pain, joint swelling, cartilage and bone degradation as well as deformity. The chemokine (C-X-C motif) ligand 13 (CXCL13) plays a crucial role in multiple cellular pathogenesis processes, including RA. TNF-α is a vital proinflammatory factor in the progression of RA. However, the role of CXCL13 in TNF-α production in RA has not been fully explored. Our analysis of both database and clinical samples revealed higher levels of CXCL13 and TNF-α in RA samples compared to healthy controls. CXCL13 concentration-dependently induces TNF-α synthesis in RA synovial fibroblasts. CXCL13 enhances TNF-α expression by interacting with the CXCR5 receptor, activating the ERK/p38 pathways, and inhibiting miR-330-3p generation. Importantly, treatment with CXCL13 shRNA counteracted the upregulation of TNF-α production induced by collagen-induced arthritis. Our findings support the notion that CXCL13 is a promising target in the treatment of RA., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
7. Interference of holon strings in 2D Hubbard model.
- Author
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Wang CY and Ho TL
- Abstract
The 2D Hubbard model with large repulsion is an important problem in condensed matter physics. At half filling, its ground state is an antiferromagnet (AMF). The dope AMF below half filling is believed to capture the physics of high T
c superconductors. And the fermion excitation of this dope AMF is theorized as splitting up into holons and spinons that carry charge and spin separately. It is believed that these exotic holons and spinons are the origins of the unusual properties of high Tc superconductors. Despite the interests in holons and spinons, the direct observations of these excitations remain difficult in solid state experiments. Here, we show that with the rapid advances in the experimental techniques in cold atoms, the direct observation of holons is possible in quantum quench dynamic processes in cold atom settings. We show that the well-known holon-strings generated by the motion of a holon as well as their interferences can be detected by the measurements spin-spin correlations and demonstrate the presence of the Marshall phase associated with a holon string reflecting an underlying AMF background. Moreover, we show that the interferences of the holon strings make a holon propagate anisotropically, with a diffusion pattern clearly distinct from that of spinless fermions. At the same time, we show that these interferences lead to a large suppression in magnetic order in the region swept through by the strings (even to about 95% for some bond). We further demonstrate the Marshall phase of the holon-strings by comparing the dynamics of holon in the tJ model with that of the so-calledσtJ-model, which is the tJ model with the Marshall phase removed. The holons in these models propagate entirely differently., (© 2024 IOP Publishing Ltd.)- Published
- 2024
- Full Text
- View/download PDF
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