Journal
METABOLITES
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/metabo12010008
Keywords
lipidomics; prostate cancer health disparity; biochemical recurrence; cholesteryl esters
Categories
Funding
- National Cancer Institute [RO1CA227559, RO1CA227559S1]
- Prostate Cancer Foundation VALOR Challenge Award [P30CA125123, R01CA220297, P30DK089503, P30DK081943, P50CA186784]
- CPRIT [RP17005, RP210227]
- Alkek Center for Molecular Discovery
- Baylor College of Medicine
- Agilent Technologies Center for Excellence in Mass Spectrometry
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African-American men are more likely to die of prostate cancer than European American men. This study reveals the association between lipid metabolic pathway alterations and prostate cancer disparities, as well as specific lipid changes associated with early biochemical recurrence.
African-American (AA) men are more than twice as likely to die of prostate cancer (PCa) than European American (EA) men. Previous in silico analysis revealed enrichment of altered lipid metabolic pathways in pan-cancer AA tumors. Here, we performed global unbiased lipidomics profiling on 48 matched localized PCa and benign adjacent tissues (30 AA, 24 ancestry-verified, and 18 EA, 8 ancestry verified) and quantified 429 lipids belonging to 14 lipid classes. Significant alterations in long chain polyunsaturated lipids were observed between PCa and benign adjacent tissues, low and high Gleason tumors, as well as associated with early biochemical recurrence, both in the entire cohort, and within AA patients. Alterations in cholesteryl esters, and phosphatidyl inositol classes of lipids delineated AA and EA PCa, while the levels of lipids belonging to triglycerides, phosphatidyl glycerol, phosphatidyl choline, phosphatidic acid, and cholesteryl esters distinguished AA and EA PCa patients with biochemical recurrence. These first-in-field results implicate lipid alterations as biological factors for prostate cancer disparities.
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