Human PD-1 / PDCD1 Protein, His Tag (MALS Verified)
分子別名(Synonym)
PDCD1,PD1,CD279,SLEB2
表達區(qū)間及表達系統(tǒng)(Source)
Human PD-1, His Tag (PD1-H5221) is expressed from human 293 cells (HEK293). It contains AA Leu 25 - Gln 167 (Accession # NP_005009.2).
Predicted N-terminus: Leu 25
蛋白結構(Molecular Characterization)

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 16.8 kDa. The protein migrates as 33-38 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
內(nèi)毒素(Endotoxin)
Less than 1.0 EU per μg by the LAL method.
純度(Purity)
>95% as determined by SDS-PAGE.
制劑(Formulation)
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重構方法(Reconstitution)
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存儲(Storage)
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 24 months in lyophilized state;
-70°C for 12 months under sterile conditions after reconstitution.



背景(Background)
程序性細胞死亡蛋白1(PD-1)也稱為CD279和PDCD1,是一種I型膜蛋白,是T細胞調(diào)節(jié)因子CD28/CTLA-4擴展家族的成員。PDCD1在活化的T細胞、B細胞、巨噬細胞、髓細胞和胸腺細胞亞群的表面上表達。PD-1有兩個配體,PD-L1和PD-L2,它們是B7家族的成員。經(jīng)IFN-γ治療后,PD-L1在幾乎所有小鼠腫瘤細胞系上表達,包括PA1骨髓瘤、P815肥大細胞瘤和B16黑色素瘤。PD-L2的表達更受限制,并且主要由DC和一些腫瘤系表達。PD1通過抑制PI3K/AKT通路的激活和轉導,抑制T細胞增殖和相關細胞因子的產(chǎn)生,包括IL-1、IL-4、IL-10和IFN-γ。此外,PD1的共聚合通過使關鍵信號轉導子去磷酸化來抑制BCR介導的信號。在體外,用PD-L1-Ig處理抗CD3刺激的T細胞導致T細胞增殖和IFN-γ分泌減少。針對PD-1的單克隆抗體正在被開發(fā)用于治療癌癥,以增強免疫系統(tǒng)。
關鍵字: PD-1;PD-1蛋白;PD-1重組蛋白;ACRO;百普賽斯;
百普賽斯集團ACROBiosystems Group(股票代碼:301080)是成立于2010年的跨國生物科技公司,是為全球生物醫(yī)藥、健康產(chǎn)業(yè)領域提供關鍵生物試劑產(chǎn)品及解決方案的行業(yè)平臺型基石企業(yè)。2021年在創(chuàng)業(yè)板上市。百普賽斯集團業(yè)務遍布全球,橫跨亞洲、北美洲、歐洲,在中國、美國、瑞士等12個城市設有辦公室、研發(fā)中心及生產(chǎn)基地。目前累計服務客戶超6000家,與全球Top 20醫(yī)藥企業(yè)均建立了長期、穩(wěn)定的合作伙伴關系。集團旗下?lián)碛衅放艫CROBiosystems百普賽斯、bioSeedin柏思薈、Condense Capital墾拓資本和ACRODiagnostics百斯醫(yī)學等。