Rat Fas/CD95 HEK293 Overexpression Lysate

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Rat Fas/CD95 HEK293 Overexpression Lysate: 产品信息

产品描述
This Rat Fas/CD95 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Fas/CD95 protein (Cat: 80043-R02H) from the overexpression lysate was verified.
表达宿主
HEK293 Cells
种属
Rat
蛋白构建信息
A DNA sequence encoding the rat FAS (NP_631933.2) (Met1-Lys170) was expressed with the Fc region of human IgG1 at the C-terminus.
分子量
The recombinant rat FAS/Fc is a disulfide-linked homodimer. The reduced monomer comprises 390 amino acids and has a predicted molecular mass of 43.7 kDa. The apparent molecular mass of the protein is approximately 57 and 36 kDa in SDS-PAGE under reducing conditions.

Rat Fas/CD95 HEK293 Overexpression Lysate: 使用指南

制备方法
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
裂解缓冲液
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
使用建议
1.  Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube. 2.  Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
缓冲液
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
稳定性 & 储存条件
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
应用
Western Blot (WB)
Optimal dilutions/concentrations should be determined by the end user.

Fas/CD95 背景信息

CD95 (APO-1/Fas) is an important inducer of the extrinsic apoptosis signaling pathway and therapy induced apoptosis of many tumor cells has been linked to the activity of CD95. is a prototype death receptor characterized by the presence of an 80 amino acid death domain in its cytoplasmic tail. This domain is essential for the recruitment of a number of signaling components upon activation by either agonistic anti-CD95 antibodies or cognate CD95 ligand that initiate apoptosis. The complex of proteins that forms upon triggering of CD95 is called the death-inducting signaling complex (DISC). The DISC consists of an adaptor protein and initiator caspases and is essential for induction of apoptosis. CD95 is also crucial for the negative selection of B cells within the germinal center (GC). Impairment of CD95-mediated apoptosis results in defective affinity maturation and the persistence of autoreactive B-cell clones. Changes in the expression of CD95 and/or its ligand CD95L are frequently found in human cancer. The downregulation or mutation of CD95 has been proposed as a mechanism by which cancer cells avoid destruction by the immune system through reduced apoptosis sensitivity. Thus, CD95 has therefore been viewed as a tumor suppressor. CD95 has been reported to be involved in the activation of NF-kappaB, MAPK3/ERK1, MAPK8/JNK, and the alternate pathways for CTL-mediated cytotoxicity. Accordingly, this protein is implicated in the pathogenesis of various malignancies and diseases of the immune system. The CD95/CD95L system was implicated in the etiology of inflammatory bowel disease (IBD) based, primarily, on the finding that CD95 is highly expressed in the intestinal epithelial cells and that epithelial apoptosis is increased in IBD.
全称
Fas cell surface death receptor
研究领域
Related Pathways
  • Death Receptor Signaling
    Death Receptor Signaling
  • p53 Pathway
    p53 Pathway
  • AMPK Signaling Pathway
    AMPK Signaling Pathway
参考文献
  • Mschen M, et al. (2002) The origin of CD95-gene mutations in B-cell lymphoma. Trends Immunol. 23(2): 75-80.
  • Peter ME, et al. (2003) The CD95(APO-1/Fas) DISC and beyond. Cell Death Differ. 10(1): 26-35.
  • Peter ME, et al. (2005) Does CD95 have tumor promoting activities Biochim Biophys Acta. 1755(1): 25-36.
  • Chen L, et al. (2010) Cell death in the colonic epithelium during inflammatory bowel diseases: CD95/Fas and beyond. Inflamm Bowel Dis. 16(6): 1071-6.
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