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Fatty acid profile in peri-prostatic adipose tissue and prostate cancer aggressiveness in African-Caribbean and Caucasian patients

Abstract : Background - Genetic and nutritional factors have been linked to the risk of aggressive prostate cancer (PCa). The fatty acid (FA) composition of peri-prostatic adipose tissue (PPAT), which reflects the past FA intake, is potentially involved in PCa progression. We analysed the FA composition of PPAT, in correlation with the ethno-geographical origin of the patients and markers of tumour aggressiveness. Methods - From a cohort of 1000 men treated for PCa by radical prostatectomy, FA composition of PPAT was analysed in 156 patients (106 Caucasians and 50 African-Caribbeans), 78 with an indolent tumour (ISUP group 1 + pT2 + PSA <10 ng/mL) and 78 with an aggressive tumour (ISUP group 4-5 + pT3). The effect of FA extracted from PPAT on in-vitro migration of PCa cells DU145 was studied in 72 patients, 36 Caucasians, and 36 African-Caribbeans. Results - FA composition differed according to the ethno-geographical origin. Linoleic acid, an essential n-6 FA, was 2-fold higher in African-Caribbeans compared with Caucasian patients, regardless of disease aggressiveness. In African-Caribbeans, the FA profile associated with PCa aggressiveness was characterised by low level of linoleic acid along with high levels of saturates. In Caucasians, a weak and negative association was observed between eicosapentaenoic acid level (an n-3 FA) and disease aggressiveness. In-vitro migration of PCa cells using PPAT from African-Caribbean patients was associated with lower content of linoleic acid. Conclusion - These results highlight an important ethno-geographical variation of PPAT, in both their FA content and association with tumour aggressiveness.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01730279
Contributor : Xavier Chard-Hutchinson <>
Submitted on : Tuesday, March 13, 2018 - 10:47:57 AM
Last modification on : Friday, June 19, 2020 - 3:08:52 AM

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Sandy Figiel, Michelle Pinault, Isabelle Domingo, Cyrille Guimaraes, Roseline Guibon, et al.. Fatty acid profile in peri-prostatic adipose tissue and prostate cancer aggressiveness in African-Caribbean and Caucasian patients. European Journal of Cancer, Elsevier, 2018, 91, pp.107-115. ⟨10.1016/j.ejca.2017.12.017⟩. ⟨hal-01730279⟩

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