Human PD-1 / PDCD1 Protein, Fc Tag, low endotoxin (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 Protein, Fc Tag (PD1-H5257) 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(jié)構(gòu)(Molecular Characterization)

This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 42.1 kDa. The protein migrates as 56-66 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
內(nèi)毒素(Endotoxin)
Less than 0.1 EU per μg by the LAL method / rFC method.
純度(Purity)
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
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(gòu)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 24 months under sterile conditions after reconstitution.




背景介紹
程序性死亡蛋白1(PD-1)——亦稱CD279、PDCD1——屬I型跨膜蛋白,是CD28/CTLA-4 T細胞調(diào)節(jié)因子家族的擴展成員。該蛋白表達于活化T細胞、B細胞、巨噬細胞、髓系細胞及胸腺細胞亞群表面。PD-1擁有B7家族的兩個配體PD-L1與PD-L2:其中PD-L1在幾乎所有小鼠腫瘤細胞系(包括經(jīng)IFN-γ處理的PA1骨髓瘤、P815肥大細胞瘤及B16黑色素瘤)均有表達;PD-L2表達范圍較窄,主要見于樹突狀細胞(DCs)及少數(shù)腫瘤細胞系。PD-1通過抑制PI3K/AKT通路活化與信號轉(zhuǎn)導(dǎo),進而阻斷T細胞增殖及相關(guān)細胞因子(IL-1、IL-4、IL-10、IFN-γ)的產(chǎn)生。此外,PD-1共交聯(lián)可通過關(guān)鍵信號轉(zhuǎn)導(dǎo)分子的去磷酸化抑制BCR介導(dǎo)的信號。體外實驗證實,PD-L1-Ig融合蛋白處理抗CD3刺激的T細胞后,可降低T細胞增殖能力及IFN-γ分泌水平。目前靶向PD-1的單克隆抗體作為免疫增強療法正處于癌癥治療研發(fā)階段。
關(guān)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(lǐng)域提供關(guān)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(wù)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(shè)有辦公室、研發(fā)中心及生產(chǎn)基地。目前累計服務(wù)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(guān)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(xué)等。