[Expression of cDNA RA538 induces terminal differentiation and apoptosis of its parental malignant cell line in vitro] - PubMed (original) (raw)
[Article in Chinese]
Affiliations
- PMID: 7867090
[Expression of cDNA RA538 induces terminal differentiation and apoptosis of its parental malignant cell line in vitro]
[Article in Chinese]
X Yang et al. Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 1994 Aug.
Abstract
A full-length cDNA (RA538) was isolated from human esophageal cancer cell line EC8712 after retinoic acid treatment. An expression vector of this cDNA (pRA538) was cotransfected with the neo gene (pDORneo) into parental cancer cell line EC8712. The cell colonies obtained after selection in G418-containing culture medium showed very poor growth, reduced (by 68%-76%) 3H-TdR uptake and morphological changes characteristic of terminal differentiation and programmed cell death (apoptosis). In situ hybridization with RA538 probes revealed expression of mRNA of RA538 in the cytoplasm of the transfected cells. The cells transfected solely with pDORneo after G418 selection showed normal growth pattern and no RA538 expression. However, none of the control cells EC8712 survived the G418 selection. Thus the expression of cDNA RA538 has a similar effect on the esophageal cancer cell EC8712 as the retinoic acid does.
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