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Fatty acid metabolism pathway play an important role in carcinogenesis of human colorectal cancers by Microarray-Bioinformatics analysis

hxt_hz 添加于 2013-8-21 13:41 | 997 次阅读 | 0 个评论

作者
Yeh C-S, Wang J-Y, Cheng T-L, Juan C-H, Wu C-H, Lin S-R
摘要
The present study systematically explored metabolic pathways and altered expressions of genes speculatively participating in colorectal carcinogenesis by using a Microarray-Bioinformatic analysis methods. The results revealed that 157 genes were up-regulated and 281 genes were down-regulated in colorectal cancer (CRC). Gene Ontology (GO) and relevant bioinformatics tools indicated that the functional category to which 438 genes (12%; 438/3800) of the most frequent alteration belonged was metabolism. The analysis of 10 colorectal cancer tissue specimens demonstrated that genes involved in fatty acid metabolic pathways had high rates of overexpression. In addition, we stimulated CRL-1790 cell line with linoleic acid (a polyunsaturated fatty acid) for 12, 24, 48 and 72 h. Cell proliferation was elevated by 5, 25, 28 and 31% (P<0.05), respectively. Further analyses revealed that the genes increasingly expressed in the cell line included enoyl-Coenzyme A, hydratase/3-hydroxyacyl Coenzyme A dehydrogenase (EHHADH), enoyl Coenzyme A hydratase, short chain, 1, mitochondrial (ECHS1); glutaryl-Coenzyme A dehydrogenase (GCDH), acyl-Coenzyme A oxidase 2, branched chain (ACOX2); acyl-Coenzyme A dehydrogenase, C-2 to C-3 short chain precursor (ACADS); carnitine palmitoyltransferase 1B (CPT1B), acyl-CoA synthetase long-chain family member 5 (ACSL5), and cytochrome P450, family 4, subfamily A, and polypeptide 11 (CYP4A11) genes. This indicated that the stimulating effect of linoleic acid on cell proliferation was due to interference with the metabolic pathway of fatty acid metabolism. In conclusion, genes with altered expression levels in CRC were mainly associated with fatty acid metabolic pathways speculated to have an important role linked to carcinogenesis.
详细资料
- 关键词: Aged; Aged, 80 and over; Cell Proliferation/drug effects; Colorectal Neoplasms/*genetics/*metabolism; *Computational Biology; Fatty Acids/*metabolism; Female; *Gene Expression Profiling; *Gene Expression Regulation, Neoplastic; Humans; Linoleic Acid/pharmacology; Male; Middle Aged; Oligonucleotide Array Sequence Analysis; Signal Transduction; Tumor Markers, Biological
- 文献种类: Journal Article
- 期刊名称: Cancer Letters
- 期刊缩写: Cancer Lett
- 期卷页: 2006年第233卷第2期 297-308页
- 地址: MedicoGenomic Research Center, Kaohsiung Medical University, and Department of Laboratory Medicine, Kaohsiung Medical University Hospital, 100 Shin-Chuan 1st Road, Kaohsiung 80317, Taiwan, ROC
- ISBN: 0304-3835
学科领域生物医药 » 基础医学
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