你知道“细胞微生物学”吗?——介绍Bacteria-Cytokine Interactions in Health and Disease一书

细菌感染会致病，这是一个常识。最早对这个事实的记载可以追朔到１４世纪中叶，那时鞑靼可汗派兵包围了克里米亚的Ｃａｆａ港，在双方坚持不下时，发源于中亚的传染病迅速蔓延到克里米亚并使可汗的军队大批死亡，迫使可汗不得不投降。据说这是第一个有关病菌与战争的记录...     

PNAS：癌细胞逃避凋亡机制研究获进展

由中国科学院动物研究所、上海血液学研究所等单位共同开展的合作研究，揭示了干细胞因子受体C-KIT在白血病和胃肠间质瘤细胞逃避凋亡中扮演的重要角色。相关研究论文日前发表在美国《国家科学院院刊》上。     

脱氢表雄酮调节炎性细胞因子作用的研究进展

炎症性疾病通常由过度或持续的炎症反应所引起。炎性细胞因子参与了炎症反应中的多个过程，如促进炎症细胞的聚集、诱导炎症介质的生成等。因此，控制炎性细胞因子的生成对炎症性疾病的治疗具有至关重要的作用。脱氢表雄酮(dehydroepiandrosterone,DHEA)是一种内源性类固醇激素。DHEA能调节炎性细胞因子的产生和释放，具有控制炎症反应的潜力。本文从DHEA的特征、调节炎性细胞因子的机制及临床应用前景进行综述，为临床治疗炎症性疾病提供新的思路和策略。     

STATs与细胞凋亡

细胞因子(cytokines)是由细胞分泌的一类小分子蛋白质,它们能与其他多种信号分子一起通过触发细胞内各种信号传导途径来调控诸多的细胞生命活动。其中包括生长、分裂、分化、病理过程(尤其是癌变),甚至死亡等。迄今已证明这些途径大多数较复杂,存在多步连续的,甚至是级联式的(cascade)生化反应系统。细胞通     

肾间质纤维化相关信号通路的研究进展

肾间质纤维化是以正常的肾间质和肾小管结构被大量聚集的细胞外基质所替代为特征的病理过程,是多数慢性肾脏疾病进展为终末期肾衰竭共同的病变过程,其病理变化主要由多种细胞因子和多条信号通路控制,是众多关键信号通路的交互影响与共同作用的结果。深入了解信号通路的相互作用对进一步揭示肾间质纤维化的分子机制有重要意义。现综述肾间质纤维化病理变化中关键的信号通路,以期为肾间质纤维化分子机制的研究提供参考。     

过继转输的父系抗原耐受T细胞诱导受体母-胎免疫耐受的机制研究

To study the effect of adoptive transfer of paternal antigen-tolerant T cells on recipient reactive T cells, CBA/JxDBA/2 mating was recruited as an abortion-prone model, and CBA/JxBALB/c mating as a successful pregnancy model. The abortion-prone CBA/J females mated with DBA/2 males were injected intraperitoneally with rat anti-mouse CD80 and CD86 mAb or rat isotype IgG at day 4 after gestation (time of implantation). The purified T cells were obtained from spleen of the pregnant CBA/J mice using magnetic beads at day 9 after gestation and labeled with CFSE in vitro. The CFSE-labeled T cells were intravenously injected into other CBA/J females mated with DBA/2 males at day 4 after gestation. The proliferation of recipient splenocytes in response to DBA/2 stimulator cells was evaluated at day 9 after gestation in vitro, and the expressions of intracellular cytokines and costimulatory molecules in CFSE +/- T cells were analyzed by flow cytometry. The results showed that adoptive transfer of either paternal antigen-tolerant T cells or T cells from BALB/c-mated CBA/J mice significantly suppressed the proliferation of recipient splenocytes in response to DBA/2 stimulator cells and resulted in lower frequency of cells positive for IL-2, IFN-gamma, CD28 and higher frequency of IL-10,CTLA-4-producing cells in both CFSE+ CD3+ population and CFSE- CD3+ population compared with adoptive transfer of T cells from isotype IgG-treated CBA/J mice, whereas the frequency of IL-4-producing cells did not appear significant change. Our findings suggest that paternal antigen-tolerant T cells transferred in recipient not only function as antigen-specific suppresser cells but also disable the recipient reactive T cells, which co-suppresses maternal rejection to the allogeneic fetus, thus resulting in the decrease of the embryo resorption rate of the abortion-prone mice to that of the normal pregnancy mice.     

Jak—STAT信号传递途径

细胞因子是一类具有重要生物学功能的蛋白因子。它们是通过细胞表面的受体介导其生物学效应的。配体和受体蛋白结合,迅速导致与受体蛋白结合着的Janus酪氨酸激酶(Jak)的活化,同时触发信号传导和转录激活因子(Signal Transducer and Activator of Tran-