4 results on '"Jakobsson, A"'
Search Results
2. Immune Regulation and Immune Therapy in Melanoma: Review with Emphasis on CD155 Signalling.
- Author
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Wu, Li-Ying, Park, Su-Ho, Jakobsson, Haakan, Shackleton, Mark, and Möller, Andreas
- Subjects
MELANOMA diagnosis ,MORTALITY ,SKIN tumors ,T cells ,CANCER ,KILLER cells ,IMMUNOTHERAPY ,IMMUNE system ,MYELOID-derived suppressor cells ,GENE expression ,FIBROBLASTS ,ANTIGENS ,CELL death ,ENDOTHELIAL cells ,CELL differentiation ,CELL receptors ,SIGNAL peptides - Abstract
Simple Summary: For melanoma patients, the most promising curative treatment is immunotherapy. Here, we summarise current immunotherapy strategies and their indications and challenges, and provide future directions of immunotherapy development. Several therapy resistance mechanisms have been described, resulting in primary refractory disease or resistance development in patients. Our increasing knowledge of immune regulation within the tumour microenvironment identifies potential alternate immunotherapy targets, including CD155. CD155 and its receptor, TIGIT, have been shown to be highly expressed in therapy-resistant melanoma cells and interference with both is therefore considered a possible immunotherapeutic strategy. This review describes the immune regulation within the melanoma tumour microenvironment, how and why immunotherapies work, and why CD155 might be an ideal target for the next generation of anti-melanoma immunotherapies. Melanoma is commonly diagnosed in a younger population than most other solid malignancies and, in Australia and most of the world, is the leading cause of skin-cancer-related death. Melanoma is a cancer type with high immunogenicity; thus, immunotherapies are used as first-line treatment for advanced melanoma patients. Although immunotherapies are working well, not all the patients are benefitting from them. A lack of a comprehensive understanding of immune regulation in the melanoma tumour microenvironment is a major challenge of patient stratification. Overexpression of CD155 has been reported as a key factor in melanoma immune regulation for the development of therapy resistance. A more thorough understanding of the actions of current immunotherapy strategies, their effects on immune cell subsets, and the roles that CD155 plays are essential for a rational design of novel targets of anti-cancer immunotherapies. In this review, we comprehensively discuss current anti-melanoma immunotherapy strategies and the immune response contribution of different cell lineages, including tumour endothelial cells, myeloid-derived suppressor cells, cytotoxic T cells, cancer-associated fibroblast, and nature killer cells. Finally, we explore the impact of CD155 and its receptors DNAM-1, TIGIT, and CD96 on immune cells, especially in the context of the melanoma tumour microenvironment and anti-cancer immunotherapies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Episodes of Diversification and Isolation in Island Southeast Asian and Near Oceanian Male Lineages.
- Author
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Karmin, Monika, Flores, Rodrigo, Saag, Lauri, Hudjashov, Georgi, Brucato, Nicolas, Crenna-Darusallam, Chelzie, Larena, Maximilian, Endicott, Phillip L, Jakobsson, Mattias, Lansing, J Stephen, Sudoyo, Herawati, Leavesley, Matthew, Metspalu, Mait, Ricaut, François-Xavier, and Cox, Murray P
- Subjects
Y chromosome ,HUMAN population genetics ,LAST Glacial Maximum ,MITOCHONDRIAL DNA ,PACIFIC Islanders ,ISLANDS - Abstract
Island Southeast Asia (ISEA) and Oceania host one of the world's richest assemblages of human phenotypic, linguistic, and cultural diversity. Despite this, the region's male genetic lineages are globally among the last to remain unresolved. We compiled ∼9.7 Mb of Y chromosome (chrY) sequence from a diverse sample of over 380 men from this region, including 152 first reported here. The granularity of this data set allows us to fully resolve and date the regional chrY phylogeny. This new high-resolution tree confirms two main population bursts: multiple rapid diversifications following the region's initial settlement ∼50 kya, and extensive expansions <6 kya. Notably, ∼40–25 kya the deep rooting local lineages of C-M130, M-P256, and S-B254 show almost no further branching events in ISEA, New Guinea, and Australia, matching a similar pause in diversification seen in maternal mitochondrial DNA lineages. The main local lineages start diversifying ∼25 kya, at the time of the last glacial maximum. This improved chrY topology highlights localized events with important historical implications, including pre-Holocene contact between Mainland and ISEA, potential interactions between Australia and the Papuan world, and a sustained period of diversification following the flooding of the ancient Sunda and Sahul continents as the insular landscape observed today formed. The high-resolution phylogeny of the chrY presented here thus enables a detailed exploration of past isolation, interaction, and change in one of the world's least understood regions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
4. Historical wind deployment and implications for energy system models.
- Author
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Hedenus, F., Jakobsson, N., Reichenberg, L., and Mattsson, N.
- Subjects
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WIND power , *WIND speed , *WIND turbines , *ENERGY consumption , *PROTECTED areas , *WIND forecasting , *HIGH-income countries - Abstract
A critical parameter in modeling studies of future decarbonized energy systems is the potential future capacity for onshore wind power. Wind power potential in energy system models is subject to assumptions regarding: (i) constraints on land availability for wind deployment; (ii) how densely wind turbines may be placed over larger areas, and (iii) allocation of capacity with respect to wind speed. By analyzing comprehensive databases of wind turbine locations and other GIS data in eleven countries and seventeen states in Australia, Canada, and the US; all with high penetration levels of wind power, we find that: i) large wind turbines are installed on most land types, even protected areas and land areas with high population density; ii) it is not uncommon with a deployment density up to 0.5 MW/km2 on municipality or county level, with rare outlier municipalities reaching up to 1.5 MW/km2 installed capacity; and iii) wind power has historically been allocated to relatively windy sites with average wind speed above 6 m/s. In many cases, allocation methods used in energy system models do not consistently reflect actual installations. For instance, we find no evidence of concentration of installations at the windiest sites, as is frequently assumed in energy system models. We conclude that assumptions made in models regarding wind power potentials are poorly reflective of historical installation patterns, and we provide new data to enable assumptions that have a more robust empirical foundation. • An empirical assessment of where wind power has been deployed. • Wind power has been installed on most land types, even protected areas and land areas with high population density. • The deployment density of wind power seldom exceeds 1 MW/km2 in a municipality or county. • Wind power has historically been allocated to relatively windy sites with average wind speed above 6 m/s. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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