Cripto-1 is a Cell Surface Marker for a Tumorigenic, Undifferentiated Subpopulation in Human Embryonal Carcinoma Cells
Overview
Reproductive Medicine
Authors
Affiliations
Deregulation of stem cells is associated with the generation and progression of malignant tumors. In addition, genes that are associated with early embryogenesis are frequently expressed in cancer. Cripto-1 (CR-1), a glycosylphosphatidylinositol-linked glycoprotein, is expressed during early embryogenesis and in various human carcinomas. We demonstrated that human embryonal carcinoma (EC) cells are heterogeneous for CR-1 expression and consist of two distinct subpopulations: a CR-1(High) and a CR-1(Low) population. By segregating CR-1(High) and CR-1(Low) populations of NTERA2/D1 EC cells by fluorescence-activated cell sorting, we demonstrated that CR-1(High) cells were more tumorigenic than CR-1(Low) cells by an in vitro tumor sphere assay and by in vivo xenograft formation. The CR-1(High) population was enriched in mRNA expression for the pluripotent embryonic stem (ES) cell genes Oct4, Sox2, and Nanog. CR-1 expression in NTERA2/D1 cells was regulated by a Smad2/3-dependent autocrine loop, by the ES cell-related transcription factors Oct4/Nanog, and partially by the DNA methylation status of the promoter region. These results demonstrate that CR-1 expression is enriched in an undifferentiated, tumorigenic subpopulation and is regulated by key regulators of pluripotent stem cells.
Cripto-1 acts as a molecular bridge linking nodal to ALK4 via distinct structural domains.
Chu K, Crawford A, Krah B, Thamilselvan V, Malik A, Aitas N Protein Sci. 2025; 34(2):e70034.
PMID: 39840816 PMC: 11751877. DOI: 10.1002/pro.70034.
Expression and prognostic value of Cripto-1 in early non-small cell lung cancer.
Zhong J, Li L, Zhang Q, Zou J, Liu W, Xu C Clin Respir J. 2023; 17(12):1203-1208.
PMID: 37528674 PMC: 10730460. DOI: 10.1111/crj.13680.
Understanding the role of Cripto-1 in cancer progression and therapeutic strategies.
Zeng Q, Gao Y, Zhou Y Clin Transl Oncol. 2022; 25(5):1135-1144.
PMID: 36456761 DOI: 10.1007/s12094-022-03023-2.
CRIPTO Is a Marker of Chemotherapy-Induced Stem Cell Expansion in Non-Small Cell Lung Cancer.
Francescangeli F, De Angelis M, Rossi R, Sette G, Eramo A, Boe A Front Oncol. 2022; 12:830873.
PMID: 35719935 PMC: 9200964. DOI: 10.3389/fonc.2022.830873.
CRIPTO-1 Is Immunolocalized in the Syncytiotrophoblast of Ampullary Pregnancies.
Cabar F, Pereira P, Bandeira C, Bevilacqua E, Schultz R, Francisco R Biomed Res Int. 2022; 2022:4769790.
PMID: 35434129 PMC: 9012632. DOI: 10.1155/2022/4769790.