普健生物（武汉）科技有限公司（AtaGenix）
Recombinant Human MS4A1 protein ,N- His Tag
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- 产品信息（Product Details）
- 前沿进展（Frontier progress）
- 如何订购
- 说明书
概述（Summary）icon
英文全称
Recombinant Human MS4A1 protein ,N- His Tag
纯度（Purity）
>90% as determined by SDS-PAGE
内毒素（Endotoxin level）
Please contact with the lab for this information.
蛋白构建（Construction）
A DNA sequence encoding the human MS4A1(Glu213-Pro297) was fused with the N-terminal His Tag
Accession #
P11836
表达宿主（Host）
Mammalian cells
种属（Species）
Homo sapiens (Human)
预测分子量（Predicted Molecular Mass）
9.35kDa
制剂（Formulation）
Supplied as solution form in PBS pH 7.5 or lyophilized from PBS pH 7.5.
运输方式（Shipping）
In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
稳定性&储存（Stability &Storage）
Use a manual defrost freezer and avoid repeated freeze thaw cycles.
Store at 2 to 8 °C for one week .
Store at -20 to -80 °C for twelve months from the date of receipt.
Store at 2 to 8 °C for one week .
Store at -20 to -80 °C for twelve months from the date of receipt.
复溶（Reconstitution）
Reconstitute in sterile water for a stock solution.A copy of datasheet will be provided with the products, please refer to it for details.
电泳图（SDS-PAGE image）icon
背景（Background）icon
背景介绍
CD20 is expressed on all stages of B cell development except the first and last; it is present from late pro-B cells through memory cells, but not on either early pro-B cells or plasma blasts and plasma cells. It is found on B-cell lymphomas, hairy cell leukemia, B-cell chronic lymphocytic leukemia, and melanoma cancer stem cells. The protein has no known natural ligand and its function is to enable optimal B-cell immune response, specifically against T-independent antigens. It is suspected that it acts as a calcium channel in the cell membrane. CD20 / MS4A1 is the target of the monoclonal antibodies (mAb) rituximab, Ibritumomab tiuxetan, and tositumomab, which are all active agents in the treatment of all B cell lymphomas and leukemias. Defects in CD20 / MS4A1 are the cause of immunodeficiency common variable type 5 (CVID5); also called antibody deficiency due to CD20 defect. CVID5 is a primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen.
分子别名（Alternative Names）
MS4A1，CD20
参考文献（References）
Jang, Juran, Cunningham, Gupta, Son, Yang, Ali, Enninga, Sung, Lazaridis (2020) Single-cell mass cytometry on peripheral blood identifies immune cell subsets associated with primary biliary cholangitis Scientific reports 10(1) 12584
Noteicon
For research use only .
The relationship between primary biliary cholangitis (PBC), a chronic cholestatic autoimmune liver disease, and the peripheral immune system remains to be fully understood. Herein, we performed the first mass cytometry (CyTOF)-based, immunophenotyping analysis of the peripheral immune system in PBC at single-cell resolution. CyTOF was performed on peripheral blood mononuclear cells (PBMCs) from PBC patients (n = 33) and age-/sex-matched healthy controls (n = 33) to obtain immune cell abundance and marker expression profiles. Hierarchical clustering methods were applied to identify immune cell types and subsets significantly associated with PBC. Subsets of gamma-delta T cells (CD3+TCRgd+), CD8+ T cells (CD3+CD8+CD161+PD1+), and memory B cells (CD3-CD19+CD20+CD24+CD27+) were found to have lower abundance in PBC than in control. In contrast, higher abundance of subsets of monocytes and naïve B cells were observed in PBC compared to control. Furthermore, several naïve B cell (CD3-CD19+CD20+CD24-CD27-) subsets were significantly higher in PBC patients with cirrhosis (indicative of late-stage disease) than in those without cirrhosis. Alternatively, subsets of memory B cells were lower in abundance in cirrhotic relative to non-cirrhotic PBC patients. Future immunophenotyping investigations could lead to better understanding of PBC pathogenesis and progression, and also to the discovery of novel biomarkers and treatment strategies.
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