RasIndependentpathwayinNKcellmediatedcytotoxicity
NK (natural killer) cells are lymphocytes distinct from B and T cells that induce perforin-mediated lysis of tumor cells and virus-infected cells. NK cell-mediated cytotoxicity is activated by glycoproteins on the cell surface (activating receptors) and inhibited by MHC-1 with self-peptide bound. The MHC-1 inhibitory signal through Ig-family or lectin receptors prevents NK cells from killing normal cells. Abnormal MH......阅读全文
RasIndependent－pathway－in－NK－cellmediated－cytotoxicity
NK (natural killer) cells are lymphocytes distinct from B and T cells that induce perforin-mediated lysis of tumor cells and virus-infected cells. NK
NKcell－cytotoxicity－assay
Outline:To measure NK cell killing, suitable target cells are labeled with 51Cr, washed and incubated together with the killer cells (and treatments).
NO2dependent－IL－12－Pathway－in－NK－cells
Macrophages and NK cells help provide innate immunity against infection by intracellular parasites and communicate with each other to regulate this pr
抗体介导的调理作用
ADCC,antibody-dependent cell-mediated cytotoxicity 抗体依赖的细胞介导的细胞毒性作用。简而言之，就是有些杀伤性细胞在抗体的作用下产生的细胞杀伤作用。其中最主要发挥作用的细胞是NK细胞，它的表面有抗体Fc段受体，在与抗体Fc段结合的情况下可以直接杀
adcc效应是什么
adcc效应是：1、ADCC，是抗体依赖的细胞介导的细胞毒性作用（ADCC，antibody-dependent cell-mediated cytotoxicity）是指抗体的Fab段结合病毒感染的细胞或肿瘤细胞的抗原表位，其Fc段与杀伤细胞（NK细胞、巨噬细胞等）表面的FcR结合，介导杀伤细胞直
Cytotoxicity－Assays－Protocol
Cytotoxicity Assays ProtocolCell-mediated cytotoxicity was determined by using a standard microcytotoxicity assay. Briefly, target cells were pelleted
关于抗体的调理吞噬和ADCC的功能介绍
IgG可通过其Fc段与表面具有相应受体的细胞结合，产生不同的生物学作用。 1．调理作用（opsonization）指IgG抗体（特别是IgG1和IgG3）的Fc段与中性粒细胞、巨噬细胞表面相应的Fc受体结合，从而增强吞噬细胞的吞噬作用。例如，细菌特异性的IgG抗体可通过其Fab段与相应的细菌抗
Cr－Release－Cytotoxicity－assay
DescriptionCytotoxic activities of mNK cells are examined in 51Cr release assay from target cells ProcedureEffector cells (mNK cells) are seeded into
IL12－and－Stat4－Dependent－Signaling－Pathway－in－Th1－Development
Interleukin-12 (IL-12) promotes cell-mediated immunity by inducing Th1 cell differentiation and activation of both T cells and NK cells. Dendritic cel
免疫系统是否具有细胞毒性？
抗体依赖的细胞介导的细胞毒性作用（antibody-dependent cell-mediated cytotoxicity，ADCC）是指某些淋巴细胞对抗体标记的靶细胞的杀伤能力；另外还有补体依赖的细胞毒性作用（complement-dependent cytotoxicity，CDC）；以及既不
简述Fc受体的特有机能
对具有该受体的细胞，通过抗体与抗原结合时，细胞将发挥如下的特有机能： （1）原噬菌体对IgG，占多形核白细胞大部分的嗜中性细胞对IgG、IgA具有Fc受体，通常通过与抗原结合的抗体以及有时与游离的抗体（嗜细胞性抗体）结合来捕捉抗原，并经吞噬作用将之围吞。 （2）B细胞的大部分（80%以上）具
免疫细胞杀伤经典案例（二）
除了传统T细胞杀伤外，DELFIA细胞毒法还可以被用于检测靶向T细胞的新型免疫治疗分子，如双特异抗体(BiTE)等的细胞杀伤功能[6]。四，NK细胞杀伤 鉴于NK细胞在天然免疫系统的重要性，其活力检测也是免疫检查点抑制剂研发过程中的核心项目。此外，NK细胞活力检测还可以用于衡量用于免疫疗法开发的新型
免疫学中ADCC效应是什么
ADCC 中文名称是“抗体依赖细胞介导的细胞毒性作用”(antibody-dependent cell-mediated cytotoxicity)。是指抗原在和抗体结合后，由于带有了表面标记，而引发具有细胞毒性作用的细胞的攻击，进而清除抗原。
人鼠嵌合抗体的功能特点
人鼠嵌合抗体有以下特点：①不仅保留了亲本鼠抗体的高特异性和亲和力，而且使鼠源性成分减少 70%左右；②其人源Fc 段能有效介导生物学效应功能，如抗体依赖性细胞介导的细胞毒作用（Antibody dependent cell-mediated cytotoxicity，ADCC）、补体依赖性细胞毒作用
人鼠嵌合抗体的特点
人鼠嵌合抗体有以下特点：①不仅保留了亲本鼠抗体的高特异性和亲和力，而且使鼠源性成分减少 70%左右；②其人源Fc 段能有效介导生物学效应功能，如抗体依赖性细胞介导的细胞毒作用（Antibody dependent cell-mediated cytotoxicity，ADCC）、补体依赖性细胞毒作用
NK细胞免疫疗法—肿瘤治疗新方向（一）
俗话说得好，没有所谓的“一针见效，药到病除”，人类疾病都是长期积累的，随着年龄的增长，人体免疫系统抵抗癌症病毒的能力显著衰退，NK细胞增殖能力也下降。然而，由于NK细胞作为人体抵抗癌细胞和病毒感染的第一道防线，用于治疗癌症的种类也愈发多样化，本文小编简单讲一讲基于NK细胞的肿瘤免疫疗法，一起来涨涨
效应细胞功能鉴定和抗体药物研发之ADCC分析（一）
1.ADCC作用ADCC作用即抗体依赖细胞介导的细胞毒性作用(antibody-dependent cell-mediated cytotoxicity)：指表达IgGFc受体的NK细胞、巨噬细胞和中性粒细胞等，通过与已结合在病毒感染细胞和肿瘤细胞等靶细胞表面的IgG抗体的Fc段结合，而达到杀伤这些
Dicer－Pathway
The degradation of endogenous mRNA in a sequence-specific manner can be induced by dsRNA [RNA interfernce (RNAi)], antisense transcription, or viral i
Fibrinolysis－Pathway
Clot formation and fibrinolysis is a balance of plasmin activation/inhibition and thrombin-thrombomodulin activity that regulates fibrin polymer forma
Complement－Pathway
The complement pathway consists of a series of over thirty proteins in plasma that are part of the immune response. Activation of the complement syste
Antisense－Pathway
About 8% of human genes have been estimated to carry out transcription from both DNA strands, resulting in significant level of endogenous antisense R
Prion－Pathway
Transmissible spongiform encephalopathy (TSE) is thought to result from the structural conversion of cellular prion protein, PrP(C), into a misfolded
Glycolysis－Pathway
Glycolysis was one of the first metabolic pathways studied and is one of the best understood, in terms of the enzymes involved, their mechanisms of ac
WNT－Signaling－Pathway
Wnt family members are secreted glycoproteins who bind to cell surface receptors such as Frizzled. Wnt members can play a role in the expression of ma
Phosphatidylcholine－Biosynthesis－Pathway
The main components of biological membranes are phosphoglyceride lipids composed of a glycerol unit esterified to two fatty acids and a polar alcohol
Classical－Complement－Pathway
The complement system is part of the defense against invading cells and is composed of about twenty different proteins found in the plasma. When activ
Ras－Signaling－Pathway
Ras activates many signaling cascades. Here we illustrate some of the well-characterized cascades in a generic compilation of effector molecules. The
EPO－Signaling－Pathway
Erythropoietin functions to increase the number of red blood cells. Thus, it has found utility as a drug for those needing to replenish erythrocytes f
AKT－Signaling－Pathway
Many cell-surface receptors induce production of second messengers like PIP3, phosphatidylinositol 3,4,5-trisphosphate, that convey signals to the cyt
mTOR－Signaling－Pathway
mTOR (mammalian target of rapamycin) appears to play a central role in signaling caused by nutrients and mitogens such as growth factors to regulate t