許華麗 朱柯 馮燕
【摘要】 上皮特異性黏附分子(epithelial cell adhesion molecule,Ep-CAM)一種分子量為37KDa的Ⅰ型跨膜糖蛋白,介導上皮特異性細胞間黏附,局限性表達于正常組織上皮基底膜處,相關于細胞信號傳遞、遷移、增殖和分化等。不少研究者在腫瘤發生機制研究中發現Ep-CAM大量表達于快速增長的上皮性或上皮源性腫瘤組織中,參與Wnt信號轉導通路,與腫瘤的發生、發展、侵襲、轉移及預后有著密切聯系,目前已成為腫瘤早期診斷和免疫靶向治療的候選分子。本文就Ep-CAM的生物學特性及近年來其在相關腫瘤的研究進展做一綜述,期望對腫瘤的早期診斷、治療和預后有所幫助。
【關鍵詞】 腫瘤 Ep-CAM 腫瘤干細胞 腫瘤標記物
doi:10.14033/j.cnki.cfmr.2020.16.069 文獻標識碼 A 文章編號 1674-6805(2020)16-0-03
Progression of the Research of Epithelial Cell Adhesion Molecule Express in Cancer/XU Huali, ZHU Ke, FENG Yan. //Chinese and Foreign Medical Research, 2020, 18(16): -171
[Abstract] Epithelial adhesion molecule (Ep-CAM) is a type I transmembrane glycoprotein with a molecular weight of 37KDa mediates the adhesion of epithelial-specific intercellular. Ep-CAM localized express at the epithelial basement membrane of normal tissues which is associated with the signaling, migration, proliferation and differentiation of cells. Lots of researchers have found that Ep-CAM is abundantly expressed in rapidly growing epithelial or epithelial-derived tumor tissues and is involved in Wnt signal transduction pathway, which is closely related to tumorigenesis, development, invasion, metastasis and prognosis. Ep-CAM has become a candidate molecule for the early diagnosis and immuno-targeted therapy of tumor. This article mainly reviews the biological characteristics of Ep-CAM and the recent research progress of it related to tumors, and hoping to be helpful for the early diagnosis, treatment and prognosis of tumors.
[Key words] Tumor Ep-CAM TSC Tumor marker
First-authors address: Mianyang Hospital of Traditional Chinese Medicine, Mianyang 621000, China
上皮屏障功能主要由上皮細胞間的緊密連接決定,生理條件下,細胞黏附起著至關重要的作用,當上皮細胞接觸相鄰細胞時,將會影響細胞的遷移、增殖和分化等功能,即為接觸性抑制[1]。然而在腫瘤中,接觸性抑制的喪失會導致細胞不可控制的增殖和運動,進而侵犯鄰近組織器官甚至遠處轉移[2]。細胞黏附主要由跨膜細胞黏附分子(cell adhesion molecule,CAM)介導的同種或異種細胞與細胞之間及細胞與基質之間的相互作用,參與細胞遷移,細胞周期,細胞信號及生物體發育和組織再生期間的形態,而Ep-CAM,主要以多聚體的形式廣泛的表達于上皮細胞的表面,功能不僅限于細胞黏附,包括細胞遷移,增殖和分化等過程[3-4],并參與鈣粘蛋白-連環蛋白及WNT信號通路密,調節Myc等原癌基因的表達[3,5-6],且因其已被證實為一種上皮性腫瘤的特異性抗原,目前已經成為腫瘤免疫治療的一個重要靶點。……