Estrogen-responsive RING finger mRNA induction in gastrointestinal carcinoma cells following bile acid treatment

The underlying molecular mechanisms of the tumor-promoting activity of bile acids such as chenodeoxycholic acid (CDCA) and deoxycholic acid (DCA) and the protective effect of ursodeoxycholic acid (UDCA) remain largely unclear. Using RNA arbitrarily primed PCR (RAP-PCR) for differential display, we i...

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Bibliographic Details
Published in:Carcinogenesis (New York) 1998-11, Vol.19 (11), p.1901-1906
Main Authors: JUNG, B, VOGT, T, MATHIEU-DAUDE, F, WELSH, J, MCCLELLAND, M, TRENKLE, T, WEITZEL, C, KULLMANN, F
Format: Article
Language:English
Subjects:
Bile Acids and Salts - pharmacology
Biological and medical sciences
Chenodeoxycholic Acid - pharmacology
Deoxycholic Acid - pharmacology
DNA-Binding Proteins - genetics
Estrogens - pharmacology
Gastroenterology. Liver. Pancreas. Abdomen
Gastrointestinal Neoplasms - etiology
Gastrointestinal Neoplasms - metabolism
Humans
Medical sciences
RNA, Messenger - analysis
Stomach. Duodenum. Small intestine. Colon. Rectum. Anus
Transcription Factors - genetics
Tripartite Motif Proteins
Tumor Cells, Cultured
Tumors
Ubiquitin-Protein Ligases
Ursodeoxycholic Acid - pharmacology
Zinc Fingers
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Summary:The underlying molecular mechanisms of the tumor-promoting activity of bile acids such as chenodeoxycholic acid (CDCA) and deoxycholic acid (DCA) and the protective effect of ursodeoxycholic acid (UDCA) remain largely unclear. Using RNA arbitrarily primed PCR (RAP-PCR) for differential display, we identified, cloned and sequenced differentially expressed transcripts after treating gastric carcinoma cells (St 23132) with the bile acids CDCA, DCA and UDCA. One of these transcripts was identified to be an estrogen-responsive RING finger protein (efp) mRNA. The differential expression of efp in gastric cancer cells was confirmed by low stringency RT-PCR. efp mRNA levels were induced 3-fold in gastric carcinoma cells after CDCA and DCA treatment, whereas no change in expression was detected after UDCA treatment. Finally, treatment of the colon carcinoma cell line HT 29 with DCA resulted in a 2- to 5-fold induction of efp mRNA levels whereas UDCA did not induce efp. As expected, efp expression was also increased after 24 h of estrogen treatment. In summary, a synergy or a common pathway of tumor enhancement of bile acids and estrogen via efp in gastrointestinal carcinogenesis can be envisioned.
ISSN:0143-3334
1460-2180
1460-2180
DOI:10.1093/carcin/19.11.1901