- ￥1900
- Biorigin
- BN41019R
- 2025年08月03日
- FCM,
- Human,
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- 详细信息
- 文献和实验
- 技术资料
- 适应物种：
Human,
- 应用范围：
FCM,
- 抗体英文名：
CD45
- 规格：
100ul
| 英文名称 | CD45 |
| 中文名称 | 白细胞共同抗原抗体 |
| 别 名 | B220; CD 45; CD45; cd45 antigen; ec3.1.3.48; CD45R; GP180; GP180; GP 180; L CA; LCA; L-CA; Leukocyte common antigen; LY5; Protein tyrosine phosphatase receptor type C; Protein tyrosine phosphatase receptor type c polypeptide; protein tyrosine phosphatase, receptor type, C; Receptor-type tyrosine-protein phosphatase C; PTPRC; PTPRC_HUMAN; SCID due to PTPRC deficiency; T200; T200 glycoprotein; T200 leukocyte common antigen; Human homolog of severe combined immunodeficiency due to PTPRC deficiency. |
| 研究领域 | 肿瘤 细胞生物 免疫学 神经生物学 信号转导 干细胞 转录调节因子 细胞表面分子 淋巴细胞 t-淋巴细胞 b-淋巴细胞 |
| 抗体来源 | Rabbit |
| 克隆类型 | Polyclonal |
| 交叉反应 | Human, |
| 产品应用 | ELISA=1:5000-10000 Flow-Cyt=1μg/Test not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. |
| 分 子 量 | 145kDa |
| 细胞定位 | 细胞膜 |
| 性 状 | Liquid |
| 浓 度 | 1mg/ml |
| 免 疫 原 | KLH conjugated synthetic peptide derived from human CD45/B220:401-500/1304 <Extracellular> |
| 亚 型 | IgG |
| 纯化方法 | affinity purified by Protein A |
| 储 存 液 | 0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. |
| 保存条件 | Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. |
| PubMed | PubMed |
| 产品介绍 | CD45 is a family of single chain transmembraneous glycoproteins consisting of at least four isoforms (220, 205, 190, 180 kDa) which share a common large intracellular domain. Their extracellular domains are heavily glycosylated. The different isoforms are produced by alternative messenger RNA splicing of three exons of a single gene on chromosome 1. CD45 is expressed on cells of the human hematopoietic lineage (including hematopoietic stem cells) with the exception of mature red cells. It is not detected on differentiated cells of other tissues. It is likely that CD45 plays an important role in signal transduction, inhibition or upregulation of various immunological functions. Antibodies recognising a common epitope on all of the isoforms are termed CD45 whilst those recognising only individual isoforms are termed CD45RA or CD45RO etc. Function: Protein tyrosine-protein phosphatase required for T-cell activation through the antigen receptor. Acts as a positive regulator of T-cell coactivation upon binding to DPP4. The first PTPase domain has enzymatic activity, while the second one seems to affect the substrate specificity of the first one. Upon T-cell activation, recruits and dephosphorylates SKAP1 and FYN. Dephosphorylates LYN, and thereby modulates LYN activity. Subunit: Binds GANAB and PRKCSH. Interacts with SKAP1. Interacts with DPP4; the interaction is enhanced in a interleukin-12-dependent manner in activated lymphocytes. Subcellular Location: Membrane; Single-pass type I membrane protein. Membrane raft. Note=Colocalized with DPP4 in membrane rafts. Post-translational modifications: Heavily N- and O-glycosylated. DISEASE: Defects in PTPRC are a cause of severe combined immunodeficiency autosomal recessive T-cell-negative/B-cell-positive/NK-cell-positive (T(-)B(+)NK(+) SCID) [MIM:608971]. A form of severe combined immunodeficiency (SCID), a genetically and clinically heterogeneous group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia, and low or absent antibody levels. Patients present in infancy recurrent, persistent infections by opportunistic organisms. The common characteristic of all types of SCID is absence of T-cell-mediated cellular immunity due to a defect in T-cell development. Genetic variations in PTPRC are involved in multiple sclerosis susceptibility (MS) [MIM:126200]. MS is a neurodegenerative disorder characterized by the gradual accumulation of focal plaques of demyelination particularly in the periventricular areas of the brain. Peripheral nerves are not affected. Onset usually in third or fourth decade with intermittent progression over an extended period. The cause is still uncertain. Similarity: Belongs to the protein-tyrosine phosphatase family. Receptor class 1/6 subfamily. Contains 2 fibronectin type-III domains. Contains 2 tyrosine-protein phosphatase domains. SWISS: P08575 Gene ID: 5788 Database links: Entrez Gene: 5788 Human Entrez Gene: 19264 Mouse Omim: 151460 Human SwissProt: P08575 Human SwissProt: P06800 Mouse Unigene: 654514 Human Unigene: 391573 Mouse Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. CD45在活化信号转导中起到调节作用 在确定CD45为一种PTPase之前就已证实了CD45参于细胞的活化和生长调节。 抗CD45抗体可以抑制PHA或CD3交联所介导的T细胞增殖，还可抑制NK或细胞毒性T细胞对靶细胞的杀伤，抑制经CD2、CD3以及CD8膜分子介导的信号转导作用。 白细胞共同抗原是五种或更多的高分子量糖蛋白组成的蛋白家族，主要位于白细胞表面，包括T、B淋巴细胞、多形核白细胞、单核细胞等，而在红细胞、血小板及非造血系统中不表达。因此是区分淋巴瘤/白血病和非造血组织肿瘤（如未分化小细胞癌、小圆细胞肉瘤）的特异性标记物。该抗体主要用于淋巴瘤和未分化小细胞癌的鉴别诊断 |
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文献和实验相关实验
#01 什么是同型对照？ 同型对照（Isotype Control），是指与使用的流式抗体具有相同种属来源、亚型、荧光标记物、使用剂量和浓度，但对目标靶点无特异性结合的抗体。同型对照通常用来消除抗体与抗原的非特异性结合造成的背景染色。 #02 为什么要做同型对照？ 流式抗体与靶标的结合，是通过抗体的 Fab 端与靶标 Marker 进行特异性结合而完成的。白细胞（除T细胞外）表面大多表达 CD16、CD32、CD64 等 Fc 受体，这些受体可与各种抗体的 Fc 端非特异性结合，出现非特异
中几乎所有的免疫应答过程，都是由各种不同的白细胞相互协作完成，因此它们也一直都是各种感染、炎症、自身免疫疾病、移植等模型研究的主要对象。 Figure1. 造血干细胞分化树 白细胞从起源上分为淋巴细胞和髓系细胞。血液中几乎所有细胞都有相同的来源——造血干细胞（Hematopoietic Stem Cells，HSC）。造血干细胞在骨髓中分化为共同淋巴样祖细胞（Common Lymphoid Progenitors，CLP）和共同髓系祖细胞（Common Myeloid Progenitors
。 超越BrdU 传统的免疫荧光染色（BrdU）检测方法需要DNA变性，抗原修复，抗原抗体过夜孵育，操作步骤复杂繁琐。并且由于BrdU抗体分子较大，嵌入DNA分子中的BrdU无法直接与BrdU抗体结合，必须先进行DNA变性操作才能使BrdU抗原表位暴露，但变性的程度可能导致错误结果。如果变性不充分，会导致BrdU难以暴露，无法检测，而且变性过程从边缘向中间渗透，会导致细胞核DNA的变性不均匀，边缘模糊不清。如果变性过分，则会导致DNA断裂，甚至降解，导致核染不均一。另外，不同抗体试剂公司的抗体
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白细胞共同抗原抗体
￥1900
