NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

NK细胞趋化因子和细胞因子的分泌与调节

Natural killer (NK) cells are the important members involved in innate immunity, which can kill virus-, intracellular bacteria-, and parasite-infected target ceils or tumor cells. NK cells can secrete cytokines/ chemokines as well, in order to mediate immune response and inflammation. However, its cytokine-secretion ability is related with the maturation of NK cells and is regulated by some factors, for example, P110δ. There-fore, more work should be done to elucidate the function and regulation of these factors, which have a signifi-cant influence on inflammation and tissue impairment in some diseases involving NK cells.     

The Anti-tumor Immunity of Dendritic Cells Modified by IFN γ Gene on Mice Bearing Ascite Hepatoma Cell H22

1 Introduction Dendritc cell (DC)-based cancer vaccines have shown to been effective both in clinical trials and in animal tumor models. Some clinical trials have been on the phase Ⅲ , but some problems are challenging now. The functions of DC from patient with malignant tumor were depressed by tumor-secreting cytokines such as IL-10. it is critical to find out some methods to improve DC differentiation maturation for priming naive T cells and initiating the specific anti-tumor immunity effectively. IFNγ is a pluripotent cytokine that can exert more the expressions of different molecules in various cells. Now, some data have shown that DCs can produce IFNγ and IFNγ can promote the maturation of DCs, which plays very important roles in promoting protective immune response as the same as IFNγ produced in NK and NKT cells. In our research,we transfected IFNγ gene into DCs in order to investigate the effect of IFNγ on DCs and monitor the anti-tumor response of the tumor bearing mice after vaccination by IFNγ-modified DCs.     

TLR3 ligand-induced accumulation of activated splenic natural killer cells into liver

It has been revealed that poly I：C is a potent stimulator for NK cells, which can induce NK cell rapid activation and preferential accumulation into liver. However, the process mediating the influx of NK cells remains obscure. In this study, we found that poly I：C administration increased the portion and absolute number of NK cells in liver, but largely decreased those in spleen. There were no obvious changes of these lymphocytes in other immune organs. The results from splenic adoptive transfer and splenectomy showed that the recruited spleen NK cells contributed to the accumulation of NK cells in liver, and this process was regulated by the production of chemokines and the presence of T cells. This investigation will help to understand the enhanced immune cell recruitment in liver upon viral infection. Cellular ＆ Molecular Immunology. 2005;2（6）：449-453.     

NK细胞趋化因子和细胞因子的分泌与调节

NK细胞是固有免疫系统中一个非常重要的成员，能够杀死病毒、细菌、寄生虫感染的细胞以及肿瘤细胞。同时，NK细胞也可以分泌一些细胞因子和趋化因子来调节免疫应答以及炎症反应，然而，这种分泌功能与NK细胞的成熟状态相关，同时也受到一些调控因子的调节，比如P1108，深入研究这些因子的功能和调控过程，对NK细胞参与免疫应答以及炎症反应具有重要意义。     

结核分枝杆菌抗原Ag85B-Mpt64190-198-HspX融合蛋白免疫原性的初步观察

目的 为了建立对潜伏感染细菌的保护性免疫应答,本研究选择结核分枝杆菌休眠期、对数生长期最重要的保护性抗原HspX、Mpt64的190～198位的氨基酸多肽(CD8+T细胞表位)及Ag85B,构建融合蛋白Ag85B-Mpt64190-198-HspX(AMH),并对其免疫原性进行研究.方法 PCR分别扩增Ag85B、Mpt64190-198-HspX基因,并依次插入pET-28a质粒中,在大肠杆菌BL21中表达纯化AMH蛋白.将该蛋白和佐剂二甲基三十六烷基铵和卡介苗多糖核酸(DDA+BCG-PSN)混合构建亚单位疫苗,分别于1、4、7周皮下免疫C57BL/6小鼠3次,最后一次免疫5周后检测体液免疫与细胞免疫反应.结果 该融合蛋白以包涵体形式能在大肠杆菌中稳定表达,经Ni-NTA层析柱纯化得到纯度较高的蛋白;构建的亚单位疫苗免疫动物能产生针对结核杆菌特定抗原(PPD、Ag85B、Mpt64190-198和HspX)的特异性的细胞免疫和体液免疫应答,具有较强的免疫原性.结论 融合蛋白AMH作为结核亚单位疫苗候选的融合蛋白抗原有必要进一步研究.