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PECAM1

血小板內(nèi)皮細(xì)胞黏附分子(PECAM1)又稱為CD31,是相對(duì)分子質(zhì)量為130kDa 的I 型跨膜糖蛋白,屬于免疫球蛋白超家族成員。CD31 通常位于血管內(nèi)皮細(xì)胞、血小板、巨噬細(xì)胞和kuffer細(xì)胞、粒細(xì)胞、T/NK細(xì)胞、淋巴細(xì)胞、巨核細(xì)胞、破骨細(xì)胞、嗜中性粒細(xì)胞。在某些腫瘤也發(fā)現(xiàn)CD31的表達(dá),如上皮樣血管內(nèi)皮瘤、上皮樣肉瘤樣血管內(nèi)皮瘤、其他血管腫瘤、組織細(xì)胞性惡性腫瘤和漿細(xì)胞。在循環(huán)血小板和白細(xì)胞中,CD31主要是通過(guò)調(diào)節(jié)其胞內(nèi)結(jié)構(gòu)域磷酸化順序而限制細(xì)胞活化反應(yīng),通常是作為抑制性受體起作用。另外,D31也在內(nèi)皮細(xì)胞細(xì)胞間連接處高度表達(dá),作為機(jī)械傳感器,白細(xì)胞運(yùn)輸?shù)恼{(diào)節(jié)劑和維持內(nèi)皮細(xì)胞連接完整性起作用。與CD31相關(guān)的大多數(shù)活性可歸因于嗜同性CD31-CD31相互作用。其中包括白細(xì)胞外滲、骨髓造血和血管發(fā)育。CD31可以促進(jìn)各種白細(xì)胞相關(guān)整聯(lián)蛋白與ICAM/VCAM IgSF成員的結(jié)合,并幫助外周血白細(xì)胞穿過(guò)內(nèi)皮屏障。促進(jìn)CAM-IgSF結(jié)合是由于白細(xì)胞CD31-內(nèi)皮細(xì)胞CD31參與后,β1和β2整聯(lián)蛋白活性的普遍上調(diào)引起的。

在2015年ASCO會(huì)議上,Michael J. Birrer, MD團(tuán)隊(duì)結(jié)合他們的研究提出CD31是卵巢癌中貝伐單抗療效的潛在標(biāo)志物。因?yàn)樨惙慰箤?duì)無(wú)進(jìn)展生存期和總生存期的影響在高CD31的患者中最為明顯。這一發(fā)現(xiàn)再次引起了國(guó)內(nèi)外學(xué)者對(duì)CD31的關(guān)注。

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熱銷產(chǎn)品

CD31 Monoclonal Antibody (ELISA, WB, IHC, IF, FC) (CSB-MA017767A0m)

驗(yàn)證數(shù)據(jù)

WB

Positive WB detected in: Jurkat whole cell lysate, THP-1 whole cell lysate, Raji whole cell lysate

IHC

IHC image of CSB-MA017767A0m diluted at 1:100 and staining in paraffin-embedded human breast cancer performed on a Leica BondTM system.

IF

Immunofluorescence staining of Hela cells with CD31 antibody at 1:100, counter-stained with DAPI.

FC

Overlay histogram showing THP-1 cells stained with CD31 antibody (red line) at 1:250.

PECAM1 Antibodies

PECAM1 for Homo sapiens (Human)

PECAM1 Proteins

PECAM1 Proteins for Bos taurus (Bovine)

PECAM1 Proteins for Homo sapiens (Human)

PECAM1 Proteins for Rattus norvegicus (Rat)

PECAM1 Proteins for Sus scrofa (Pig)

PECAM1 ELISA Kit

PECAM1 ELISA Kit for Mus musculus (Mouse)

PECAM1 ELISA Kit for Rattus norvegicus (Rat)

PECAM1 ELISA Kit for Homo sapiens (Human)