產(chǎn)品展示
B7-H1/PDL1/CD274,程序性死亡配體1抗體
點擊次數(shù):249發(fā)布時間:2015/4/16 11:03:58

更新日期:2016/10/13 9:37:22
所 在 地:美洲
產(chǎn)品型號:
品牌名稱:Abcam
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詳細(xì)內(nèi)容
產(chǎn)品縮寫 PDL1/CD274
蛋 白 名 Programmed cell death 1 ligand 1
別 稱 B7-H,B7H1,PDL1,PD-L1,PDCD1L1,PDCD1LG1
免 疫 原 重組蛋白(來源于大腸桿菌)
來 源 兔
特 異 性 抗人
克隆類型 多克隆
應(yīng) 用 WB免疫印跡
成 分 200μg/ml親和純化抗體,0.01M PBS,30%甘油。
保存條件 連續(xù)使用時4°C存儲,保質(zhì)期六個月;長期存儲時建議分裝為10ul以上小包裝-20°C存儲,并避免反復(fù)凍融,保質(zhì)期一年。
背景資料 CD274(CD274 molecule), also known as PDCD1L1, PDL1, B7H1, CD274 molecule, cluster of differentiation (CD274) or B7 homolog 1 (B7-H1), Programmed cell death 1 ligand 1, is a protein that in humans is encoded by the CD274 gene. Levels of B7H1 correlated with PTEN loss in glioblastoma specimens, and tumor-specific T cells lysed human glioma targets expressing wildtype PTEN more effectively than those expressing mutant PTEN. Sequence analysis predicted that it has 290-amino acid. immunoresistance in glioma is related to loss of the tumor suppressor PTEN and is mediated in part by B7H1.Programmed death ligand 1 (PD-L1) is a 40kDa type 1 transmembrane protein that has been speculated to play a major role in suppressing the immune system during particular events such as pregnancy, tissue allografts, autoimmune disease and other disease states such as hepatitis. Using microarray analysis and flow cytometry, Barber et al.(2006) found that Pd1 was highly upregulated by functionally exhausted CD8 T cells from mice infected with a lymphocytic choriomeningitis virus (LCMV) strain causing chronic infection, but not by functional memory CD8 T cells from mice infected with an LCMV strain causing acute infection.
抗體(antibody)指機(jī)體的免疫系統(tǒng)在抗原刺激下,由B淋巴細(xì)胞或記憶細(xì)胞增殖分化成的漿細(xì)胞所產(chǎn)生的、可與相應(yīng)抗原發(fā)生特異性結(jié)合的免疫球蛋白。主要分布在血清中,也分布于組織液及外分泌液中。
抗體的概念:
*初有人用電泳證明血清中抗體活性在γ球蛋白部分,故曾把抗體統(tǒng)稱為丙種(γ)球蛋白。后來發(fā)現(xiàn),抗體并不都在γ區(qū);并且位于γ區(qū)的球蛋白,也不一定都具有抗體活性。
1964年,世界衛(wèi)生組織舉行專門會議,將具有抗體活性以及與抗體相關(guān)的球蛋白統(tǒng)稱為免疫球蛋白(Ig),如骨髓瘤蛋白,巨球蛋白血癥、冷球蛋白血癥等患者血清中存在的異常免疫球蛋白以及正常人天然存在的免疫球蛋白亞單位等。因而免疫球蛋白是結(jié)構(gòu)化學(xué)的概念,而抗體是生物學(xué)功能的概念。可以說,幾乎所有抗體都是免疫球蛋白(極少數(shù)抗體為RNA),但并非所有免疫球蛋白都是抗體。