Abstract:
:Fatty acids are implicated in tumorigenesis, but data are limited concerning endogenous fatty acid metabolism of tumor cells in adenomas and adenocarcinomas of the small intestine. The recently cloned human acyl-CoA-synthetase 5 (ACS5) is predominantly found in the small intestine and represents a key enzyme in providing cytosolic acyl-CoA thioesters. Protein synthesis and mRNA expression of ACS5 were studied in human intestinal tissues using different methods, including a newly established monoclonal antibody. In the healthy small intestine, expression of ACS5 was restricted to the villus surface epithelium but was not detectable in enterocytes lining crypts. ACS5 protein and mRNA were progressively diminished in epithelial cells of adenomas and adenocarcinomas of the small intestine. In conclusion, altered expression of ACS5 is probably related to the adenoma-carcinoma sequence of small intestinal epithelial tumors due to an impaired acyl-CoA thioester synthesis.
journal_name
Hum Patholjournal_title
Human pathologyauthors
Gassler N,Schneider A,Kopitz J,Schnölzer M,Obermüller N,Kartenbeck J,Otto HF,Autschbach Fdoi
10.1053/s0046-8177(03)00431-3subject
Has Abstractpub_date
2003-10-01 00:00:00pages
1048-52issue
10eissn
0046-8177issn
1532-8392pii
S0046817703004313journal_volume
34pub_type
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