Lysophosphatidylcholine acyltransferase 1 (LPCAT1) overexpression in human colorectal cancer View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2009-01

AUTHORS

Francisco Mansilla, Kerry-Ann da Costa, Shuli Wang, Mogens Kruhøffer, Tal M. Lewin, Torben F. Ørntoft, Rosalind A. Coleman, Karin Birkenkamp-Demtröder

ABSTRACT

The alteration of the choline metabolite profile is a well-established characteristic of cancer cells. In colorectal cancer (CRC), phosphatidylcholine is the most prominent phospholipid. In the present study, we report that lysophosphatidylcholine acyltransferase 1 (LPCAT1; NM_024830.3), the enzyme that converts lysophosphatidylcholine into phosphatidylcholine, was highly overexpressed in colorectal adenocarcinomas when compared to normal mucosas. Our microarray transcription profiling study showed a significant (p < 10(-8)) transcript overexpression in 168 colorectal adenocarcinomas when compared to ten normal mucosas. Immunohistochemical analysis of colon tumors with a polyclonal antibody to LPCAT1 confirmed the upregulation of the LPCAT1 protein. Overexpression of LPCAT1 in COS7 cells localized the protein to the endoplasmic reticulum and the mitochondria and increased LPCAT1 specific activity 38-fold. In cultured cells, overexpressed LPCAT1 enhanced the incorporation of [(14)C]palmitate into phosphatidylcholine. COS7 cells transfected with LPCAT1 showed no growth rate alteration, in contrast to the colon cancer cell line SW480, which significantly (p < 10(-5)) increased its growth rate by 17%. We conclude that LPCAT1 may contribute to total choline metabolite accumulation via phosphatidylcholine remodeling, thereby altering the CRC lipid profile, a characteristic of malignancy. More... »

PAGES

85-97

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00109-008-0409-0

DOI

http://dx.doi.org/10.1007/s00109-008-0409-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1033891352

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/18974965


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