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50T
| 产品编号 | IHC0657R |
| 英文名称 | Rat CD8 Ready-To-Use IHC Kit |
| 中文名称 | 大鼠CD8即用型免疫组化试剂盒 |
| 英文别名 | CD8; CD8A; CD8B; CD8B1; LEU2; LY3; LYT3; MAL; p32; P37; CD8 antigen; alpha polypeptide (p32); CD8a; CD8a antigen; CD8a molecule; CD8A_HUMAN; Leu2; Leu2 T lymphocyte antigen; OKT8 T cell antigen; T cell antigen Leu2; T cell co receptor; T-cell surface glycoprotein CD8 alpha chain; T-lymphocyte differentiation antigen T8/Leu-2; T8 T cell antigen |
| 产品应用 | IHC-P Not yet tested in other applications. |
| 交叉反应 | Rat |
| 亚基 | Forms disulfide-linked heterodimers with CD8B at the cell surface. Also forms homodimers in several cell types including NK-cells or peripheral blood T-lymphocytes. Interacts with the MHC class I HLA-A/B2M dimer. One HLA-A molecule (mainly via nonpolymorphic alpha-3 domain) interacts with one CD8A homodimer (via CDR-like loop) (PubMed:2784196, PubMed:9177355). Interacts with LCK in a zinc-dependent manner. Interacts with HLA-G; this interaction is direct and might down-regulate T cell receptor signaling |
| 亚细胞定位 | #Cell membrane #Membrane #Secreted |
| 组织特异性 | CD8 on thymus-derived T-cells usually consists of a disulfide-linked alpha/CD8A and a beta/CD8B chain. Less frequently, CD8 can be expressed as a CD8A homodimer. A subset of natural killer cells, memory T-cells, intraepithelial lymphocytes, monocytes and dendritic cells expresses CD8A homodimers. Expressed at the cell surface of plasmacytoid dendritic cells upon herpes simplex virus-1 stimulation. |
| 翻译后修饰 | Palmitoylated, but association with CD8B seems to be more important for the enrichment of CD8A in lipid rafts. O-glycosylated. Phosphorylated in cytotoxic T-lymphocytes (CTLs) following activation. |
| 功能 | Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class I molecule:peptide complex. The antigens presented by class I peptides are derived from cytosolic proteins while class II derived from extracellular proteins. Interacts simultaneously with the T-cell receptor (TCR) and the MHC class I proteins presented by antigen presenting cells (APCs). In turn, recruits the Src kinase LCK to the vicinity of the TCR-CD3 complex. LCK then initiates different intracellular signaling pathways by phosphorylating various substrates ultimately leading to lymphokine production, motility, adhesion and activation of cytotoxic T-lymphocytes (CTLs). This mechanism enables CTLs to recognize and eliminate infected cells and tumor cells. In NK-cells, the presence of CD8A homodimers at the cell surface provides a survival mechanism allowing conjugation and lysis of multiple target cells. CD8A homodimer molecules also promote the survival and differentiation of activated lymphocytes into memory CD8 T-cells. |
| 保存条件 | Please store components at the temperatures indicated on the individual tube labels. The kit is stable for 6 months from the date of receipt. |
| 背景资料 | CD8, also known as cluster of differentiation 8, is a type I transmembrane glycoprotein of the immunoglobulin family that plays a crucial role in T cell differentiation, activation, and signal transduction. It is expressed as either a heterodimer (CD8 alpha beta) or a homodimer (CD8 alpha alpha). The CD8 alpha beta form is predominantly found on the majority of thymocytes and a subpopulation of mature alpha beta TCR T cells, while the CD8 alpha alpha form is expressed on gamma delta TCR T cells, a subset of intestinal intraepithelial lymphocytes (IELs), and dendritic cells. CD8 functions as a co-receptor for major histocompatibility complex class I (MHC-I) molecules, working alongside the T cell receptor (TCR). The CD8 alpha chain is essential for binding to MHC-I. CD8 is also expressed on a subset of T cells, NK cells, monocytes, and dendritic cells as disulfide-linked homodimers of CD8 alpha. Upon ligation of MHC-I/peptide complexes presented by antigen-presenting cells (APCs), CD8 recruits lymphocyte-specific protein tyrosine kinase (Lck), leading to lymphokine production, increased motility, and activation of cytotoxic T lymphocytes (CTLs). Activated CTLs are vital for clearing pathogens and tumor cells. The differentiation of naive CD8+ T cells into CTLs is strongly enhanced by cytokines such as IL-2, IL-12, and TGF-beta1. Through its interactions with MHC-I and association with protein tyrosine kinase p56lck, CD8 plays a significant role in T cell development and the activation of mature T cells. |
| 应用 | 推荐稀释比例 |
Immunohistochemical analysis of paraffin embedded Rat spleen tissue slide using IHC0657R (Rat CD8 Kit).
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文献和实验相关实验
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Rat CD8 Ready-To-Use IHC Kit(IHC0657R)-50T
￥3200
