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On the winter enhancement of adaptive humoral immunity: hypothesis testing in desert hamsters (Phodopus roborovskii: Cricetidae, Rodentia) kept under long-day and short-day photoperiod

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Integrative Zoology 2020年第3期15卷 232-247页

作者： Nina Yu.VASILIEVA Anastasiya M.KHRUSHCHOVA Alexander V.KUPTSOV Olga N.SHEKAROVA Olga V.SOKOLOVA Dehua WANG Konstantin A.ROGOVIN Severtsov Institute of Ecology and Evolution RAS MoscowRussia Institute of Zoology Chinese Academy of Science Chaoyang DistrictBeijingChina

We tested the winter immunity enhancement hypothesis(WIEH)on male desert hamsters(Phodopus roborovskii)kept under long-day(LD)and short-day(SD)*** assumed that under SD in a laboratory,the adaptive humoral immune responsiveness to the antigenic challenge would be enhanced due to the lack of winter physical stressors and food shortages and/or because of the action of an endogenous winter bolstering mechanism,while under LD the immune responsiveness would be suppressed by the activity of the reproductive *** results support the WIEH in *** did not find a difference in antibody production in response to sheep erythrocytes between SD and LD hamsters,but SD males had the lower number of granulocytes and the higher number of lymphocytes in white blood cell *** activity was lower in SD *** males demonstrated an increase in their mass-specific resting metabolic rate,their mass-specific maximal metabolic rate and their level of *** result of a generalized linear model analysis indicates the negative effect on secondary immunoresponsiveness to sheep erythrocytes of mid-ventral gland size,the organ characterizing individual reproductive quality,and designates a tradeoff between antibody production and reproductive *** mass-independent maximal metabolic rate also negatively affected antibody production,indicating a tradeoff between maximal aerobic performance and the adaptive immune *** higher stress in SD males seems to be the most likely reason for the lack of the effect of daylight duration on antibody production.

关键词： adaptive humoral immunity desert hamster photoperiodicity winter immunoenhancement

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Identification of γδ T cells from zebrafish provides insights into their important role in adaptive humoral immunity

Identification of γδ T cells from zebrafish provides insig...

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第十二届全国免疫学学术大会

作者： Wan Feng Hu Chong-bin Shao Tong Gao Ke xiang Li-xin Jian-zhong Shao College of Life Sciences zhejiang university Key Laboratory for Cell and Gene Engineering of Zhejiang Province Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and Technology

The γδ T subset is an evolutionarily primitive T cell population characterized by distinct TCRs and functional roles in the innate and adaptive *** has been well documented in humans and mouse ***,little is known about the occurrence and existence of this T cell subset in ancient *** the present study,we report the molecular and cellular characterizations of γδ T cells from a zebrafish(Danio rerio) *** constant regions of zebrafish TCR-γ(DrTRGC) and TCR-8(DrTRDC) were initially *** γδ T cells accounted for 7.7% to 20.5%of the total lymphocytes in spleen,kidney,peripheral blood,skin,gill and intestine *** possess typical morphological features of lymphocytes with a surface phenotype of γδ*** γδ T cells functionally showed a potent phagocytic ability to both soluble and particulate *** can act as an antigen presenting cell(APC)to initiate the antigen(KLH)-specific CD4 T cell activation and to induce the subsequent B cell proliferation and antibody(IgM) ***,zebrafish γδ T cells also play a critical role in fish specific IgZ production in intestinal *** findings indicated that γδ T cells had been originated as early as teleost fish,which providing valuable insights into the evolutionary history of T cell *** hope that this study would be used as a guide to develop a zebrafish model for the cross-species investigation of γδ T cell biology.

关键词： γδ T cells adaptive humoral immunity zebrafish

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