NO2dependentIL12PathwayinNKcells
Macrophages and NK cells help provide innate immunity against infection by intracellular parasites and communicate with each other to regulate this process. When stimulated, macrophages secrete the cytokine IL-12 that is essential for activation of the cytotoxic activity of natural killer (NK) cells. IL-12 stimulates this NK cell response through activation of a JAK/STAT signaling pathway. Binding of IL-12 to its rec......阅读全文
关于NK细胞活性测定(NK)的基本介绍
自然杀伤(NK)细胞是一群异质性多功能的免疫细胞,是与特异性免疫应答无关的自然毒杀伤细胞。它对体内多种细胞,特别是T、B淋巴细胞有调节作用。它所介导的裂解细胞作用不受主要组织相溶性复合体的限制。自然杀伤细胞不仅对癌细胞,对病毒、胞内寄生菌和老化变异细胞也具有极强的清除作用。NK细胞起杀伤作用不需
免疫细胞表面抗原分子CD家族对照表(CD1CD247)3
CD7Membrane glycoprotein and Fc receptor for IgM Homologous to TCR gamma, Ig kappaMembrane expression early during T ontogeny, before TCR rearrangemen
Immunity同期刊登中国学者两项成果
来自清华大学医学院,以及中科院生物物理研究所等处的研究人员发表题为“The Adaptor SAP Controls NK Cell Activation by Regulating the Enzymes Vav-1 and SHIP-1 and by Enhan
Nature-Medicine:同种异体CARNK疗法临床效果优异,安全性大大提高
2010年,Carl June 教授率先将CAR-T细胞疗法推进到人体临床试验,并成功“治愈”了多名白血病患者。2017年,FDA首次批准了CAR-T疗法上市,如今,已有6款CAR-T疗法获得FDA批准用于治疗白血病和淋巴瘤等血液类癌症。而我们国内也已有几款CAR-T细胞疗法获批上市。 CAR
间充质干细胞治疗在新冠肺炎的临床研究的应用(二)
临床试验数据显示,输注MSCs的COVID-19肺炎患者血清中抗炎因子IL-10含量显著升高,促炎因子TNF-α含量显著下降,趋化因子IP-10及生长因子VEGF有上升趋势[1],为MSCs抑制CRS提供了有力证据。 COVID-19肺炎患者输注MSCs组与未输注
简述白细胞介素15的一般性质
IL-15是新近发现的一种因子,可由活化的单核-巨噬细胞、表皮细胞和成纤维细胞等多种细胞产生。IL-15的分子结构与IL-2有许多相似之外,因此可以利用IL-2受体的β链和γ链与靶细胞结合,发挥类似IL-2的生物学活性。 IL-15可诱导B细胞增殖和分化,是唯一能部分取代IL-2诱导初期抗体产
山羊抗兔二抗(HRP标记)在诸多文献中的应用
在免疫学实验中,比如WB,IHC,IF等,大家都知道选着好正确的一抗,往往实验就成功了一大半,因此,往往很多研究者便会忽视对二抗,以及其它试剂盒品质的追求。二抗是一种相对而言比较稳定的产品,包装大,因此很多实验室都会公用一个二抗。但如果二抗没有选择好的话,影响的可能就是一整个实验室或者课题组了。艾美
Nature最新发现:原来肥胖是由NK细胞数量增加引起的
NK 细胞,又叫自然杀伤细胞,主要介导天然免疫应答,不依赖抗体和补体,即能直接杀伤靶细胞,如肿瘤细胞或受病毒感染的细胞等;此外,尚有免疫调节功能,也参与移植排斥反应和某些自身免疫病的发生发展。 与肥胖有关的炎症是由免疫细胞的复杂通路介导的。目前,一项新的研究确定了导致肥胖的明显NK细胞群,
探究免疫细胞的家族成员Th亚群(二)
04 Tr1 1997年,Groux等[7]发现了一类由IL-10诱导产生的新CD4+T亚群,该亚群能在体内抑制抗原特异性免疫反应并主动下调病理免疫应答,被称之为Tr1细胞。因Tr1细胞不表达Foxp3而区别于经典的Treg。 IL-27和IL-21协同作用,激活 STA
自噬与子宫内膜异位症研究(三)
通过对比芯片差异数据与MIR1185-1-3p下游潜在靶基因,只找到一个重合基因——PTGS2。MIR1185-1-3p过表达会抑制PTGS2表达。EMS小鼠模型中,HCK缺失导致PTGS2+ NK细胞的增加(Fig9)。而与PTGS2- NK细胞相比,PTGS2+ NK细胞的FCGR3、PRF1
第三群淋巴细胞介绍
在淋巴细胞中,除T和B细胞外,还发现一群没有T和B细胞表面标志的淋巴样细胞。一些学者认为它们可能是与T和B细胞并列的第三群淋巴细胞。目前认为它们是来源于其它细胞系,有待深入研究后才能确定其归属。 一、自然杀伤细胞(NK细胞) 1.NK细胞的特性 NK细胞来源于骨髓,主要存在于血液和淋巴样组织
免疫学实验NK细胞活性测定(NK)介绍
NK细胞活性测定(NK)介绍: 自然杀伤(NK)细胞是一群异质性多功能的免疫细胞,是与特异性免疫应答无关的自然毒杀伤细胞。它对体内多种细胞,特别是T、B淋巴细胞有调节作用。它所介导的裂解细胞作用不受主要组织相溶性复合体的限制。自然杀伤细胞不仅对癌细胞,对病毒、胞内寄生菌和老化变异细胞也具有极强
简述NK细胞活性测定(NK)的检查过程
一、NK细胞活性测定(NK)的检查过程: 取传代后24h生长良好的YAC-1细胞(存活率>95%)按1×106/mL YAC-1细胞悬液加3H-TdR 10uCi进行标记,于37℃、5%CO2培养箱中培养2h,每30min振荡1次。标记后的细胞用培养液洗涤3次,重悬于培养液中,使细胞浓度为1×
简述NK细胞活性测定(NK)的临床意义
一、NK细胞活性测定(NK)的临床意义: 异常结果:受试样品组的NK细胞活性显著高于对照组的NK细胞活性,可判定该项试验结果阳性。活性升高,常见于病毒感染的早期,Down综合征,接受器官移植、骨髓移植的患者等及免疫增强剂治疗患者。活性降低,常见于恶性肿瘤、重症联合免疫缺陷病,AIDS和免疫抑制
Melanocyte-Development-and-Pigmentation-Pathway
Studies with homozygous knockout mice have suggested that stem cell factor (SCF or KITLG), c-Kit, microphthalmia (Mitf), and B-cell CLL/lymphoma 2 (Bc
Nitric-Oxide-Signaling-Pathway
Glutamatergic-mediated nitric oxide (NO) production occurs via the N-methyl-D-aspartic acid (NMDA) postsynaptic density protein 95 (PSD95)-neuronal ni
TGF-beta-signaling-pathway
TGF-beta regulates growth and proliferation of cells, blocking growth of many cell types. The TGF-beta receptor includes type 1 and type 2 subunits th
Leloir-pathway-of-galactose-metabolism
Galactose is a hexose sugar found in the disaccharide lactose. Galactose has six carbons like glucose and differs from glucose only in the stereochemi
Phospholipase-C-Signaling-Pathway
Phospholipase C comes in multiple forms and plays a key role in the signal transduction process for many receptors. Its main function is to hydrolyze
Granzyme-A-mediated-Apoptosis-Pathway
One mechanism used by cytotoxic T cells to kill tumor cells and virus-infected cells is the release of perforin and granzyme proteins. Perforin protei
Cyclin-E-Destruction-Pathway
Cyclins are proteins that associate with cyclin-dependent protein kinases to regulate their activity and the progression of the cell cycle through spe
IFN-gamma-signaling-pathway
Interferon gamma is secreted from CD4+ Th1 cells, CD8 cells, gamma/delta T cells and activated NK cells. It plays a role in activating lymphocytes to
IFN-alpha-signaling-pathway
Interferon alpha plays a role in viral infections. Signaling takes place through an IFN Recpetor complex consisting of two alpha chains (Type I recept
Ahr-Signal-Transduction-Pathway
The Ah receptor, bHLH/PAS transcription factor, upon binding of an agonist such as 2,3,7,8-tetrachlorodibenzo-p-dioxin translocates into the nucleus a
Trka-Receptor-Signaling-Pathway
Nerve growth factor (NGF) is a neurotrophic factor that stimulates neuronal survival and growth through TrkA, a member of the trk family of tyrosine k
Sonic-Hedgehog-(Shh)-Pathway
Sonic Hedgehog (Shh) is one of a family of three secreted proteins, including Indian Hedgehog (Ihh) and Desert Hedgehog (Dhh), that play distinct and
Internal-Ribosome-Entry-Pathway
Control of translation is one of the major regulatory events in eukaryotic gene expression. Internal ribosome entry sites (IRES) were first discovered
Catabolic-pathway-for-asparagine-and-asparate
Aspartate and asparagine are catabolized into oxaloacetate and the Kreb's cycle in a fairly direct pathway for amino acids with four carbons. The
Proteolysis-and-Signaling-Pathway-of-Notch
Notch is a large cell-surface receptor that is activated by contact with membrane-bound ligands on neighboring cells. The ligands that activate Notch
Intrinsic-Prothrombin-Activation-Pathway
Blood coagulation or clotting takes place in 3 essential phases. The first phase is the activation of a prothrombin activator complex. The second phas