MHC I类链相关蛋白A/组织相容性复合物MHCIa抗体

MHC I类链相关蛋白A/组织相容性复合物MHCIa抗体

规格：1mg/1ml

英文名： MICA

别名： MHC I a; MHC class I polypeptide-related sequence A; MHCA; MHC class-I chain related protein A; HLA class I antigen; FLJ36918; FLJ60820; MGC111087; MGC21250; MHC class I chain related gene A protein;

分子量： 38kDa

储存液：0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glyce

克隆类型：Polyclonal

亚型：IgG

纯化方法：affinity purified by Protein A

**原：KLH conjugated synthetic peptide derived from humna MICA

交叉反应：Human,

细胞定位：细胞浆 细胞膜

MHC I类链相关蛋白A/组织相容性复合物MHCIa抗体产品介绍：background: The MHC class I chain-related (MIC) proteins are related to the Major histocompatibility complex (MHC) class I proteins which are ubiquitously expressed and mediate the recognition of intracellular antigens by cytotoxic T cells. The MHC class I chain-related (MIC) proteins are recognized by NKG2D, a receptor on NK and T cells, and promote anti-tumor activity. MICA, a member of the MIC family, is widely expressed on many tumors, and it is the MICA/NKG2D interaction that is thought to stimulate the anti-tumor reactivity by T lymphocytes. MICA is present in virtually every tissue except the nervous system, suggesting that MIC protein expression may only be one component of the anti-tumor activity of the immune system. Function: Seems to have no role in antigen presentation. Acts as a stress-induced self-antigen that is recognized by gamma delta T-cells. Ligand for the KLRK1/NKG2D receptor. Binding to KLRK1 leads to cell lysis. Subcellular Location: Cell membrane. Cytoplasm. Expressed on the cell surface in gastric epithelium, endothelial cells and fibroblasts and in the cytoplasm in keratinocytes and monocytes. Infection with human adenovirus 5 suppresses cell surface expression due to the adenoviral E3-19K protein which causes retention in the endoplasmic reticulum. Tissue Specificity: Widely expressed with the exception of the central nervous system where it MHC I类链相关蛋白A/组织相容性复合物MHCIa抗体is absent. Expressed predominantly in gastric epithelium and also in monocytes, keratinocytes, endothelial cells, fibroblasts and in the outer layer of Hassal's corpuscles within the medulla of normal thymus. In skin, expressed mainly in the keratin layers, basal cells, ducts and follicles. Also expressed in many, but not all, epithelial tumors of lung, breast, kidney, ovary, prostate and colon. In thyomas, overexpressed in cortical and medullar epithelial cells. Tumors expressing MICA display increased levels of gamma delta T cells. Post-translational modifications: N-glycosylated. Glycosylation is not essential for interaction with KLRK1/NKG2D but enhances complex formation. Proteolytically cleaved and released from the cell surface of tumor cells which impairs KLRK1/NKG2D expression and T-cell activation. DISEASE: Note=Anti-MICA antibodies and ligand shedding are involved in the progression of monoclonal gammopathy of undetermined significance (MGUS)to multiple myeloma. Genetic variations in MICA may be a cause of susceptibility to psoriasis type 1 (PSORS1) [MIM:177900]. Psoriasis is a common, chronic inflammatory disease of the skin with multifactorial etiology. It is characterized by red, scaly plaques usually found on the scalp, elbows and knees. These lesions are caused by abnormal keratinocyte proliferation and infiltration of inflammatory cells into the dermis and epidermis. Genetic variation in MICA is a cause of susceptibility to psoriatic arthritis (PSORAS) [MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder rangingMHC I类链相关蛋白A/组织相容性复合物MHCIa抗体 from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis). Similarity: Belongs to the MHC class I family. MIC subfamily. Contains 1 Ig-like C1-type (immunoglobulin-like) domain. Gene ID: 100507436 Database links: Entrez Gene: 100507436 Human Entrez Gene: 4276 Human Omim: 600169 Human SwissProt: Q29983 Human Unigene: 130838 Human Unigene: 728757 Human Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. MICA蛋白是一种细胞应激分子，在正常组织中表达量少，仅在肠道上皮组织表达量稍高，但是在多种肿瘤细胞，尤其是上皮源性的肿瘤如肺癌、乳腺癌、肾癌、卵巢癌、结肠癌等细胞表面高表达，并在细胞发生癌变的早期阶段出现在细胞表面。 该分子与相应受体NKG2D结合后可激活NK细胞、Vd1 gd T细胞、CD8+ T细胞的细胞毒作用，从而产生杀伤肿瘤细胞的生物效应。因此，抗MICA特异性抗体在肿瘤早期诊断、**中可能具有更高的敏感性和疗效，从而可实现肿瘤的“早诊断、早**”。并且还能对其它**方案的疗效进行早期评估。

MHC I类链相关蛋白A/组织相容性复合物MHCIa抗体产品应用：WB=1:100-500 ELISA=1:500-1000 IHC-P=1:100-500 IHC-F=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复） not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user.

研究领域：肿瘤  细胞生物  **学  结合蛋白  

储存条件： Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.

来源： Rabbit

外观： Lyophilized or Liquid

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