Title:Jaboticaba Peel Extract Exerts Chemopreventive Effects in Transgenic
Mouse Model of Prostate Cancer
Volume: 14
Issue: 9
Author(s): Ellen Nogueira-Lima*, Celina de Almeida Lamas, Andressa Mara Baseggio, Fernanda Cristina da Veiga, Lucia Elvira Álvares, Mario Roberto Maróstica Júnior and Valeria Helena Alves Cagnon
Affiliation:
- Department of Structural and Functional Biology, Institute of Biology, Universidade Estadual de Campinas
(UNICAMP), Bertrand Russel Av, Campinas, São Paulo, 13083-865, Brazil
Keywords:
TRAMP mice, prostate cancer, jaboticaba, extracellular matrix, angiogenesis, Dact-1.
Abstract:
Introduction: Angiogenesis, oxidative stress, and epigenetic alterations involved in prostate
cancer (PCa) are associated with different risk factors, such as a high-fat diet (HFD), overweight,
and obesity. Jaboticaba peel extract (PJE) has shown antiproliferative, antiangiogenic, and antioxidant
activities in the prostate of senile mice.
Method: This study aimed to evaluate the effect of PJE on the dorsolateral prostate microenvironment
in male transgenic mice for the prostate adenocarcinoma model, considering different pathological
alterations, changed or unchanged by HFD, focusing on histopathology, and molecules related to
extracellular matrix (ECM), oxidative stress, angiogenesis, and Dact-1. Western blotting and immunohistochemistry
were performed on Dact-1-associated tumor suppressor genes in transgenic
mice. Mice were fed HFD and received patented jaboticaba peel extract (PJE) treatment. The plasma
levels of systemic oxidative stress were evaluated.
Results: Our results showed that PJE protected the dorsolateral prostate against proliferation and
increased MMP9, TGFβ, and VEGF levels. PJE reduced oxidative stress and lipid peroxidation by
modulating catalase, SOD 2, and 4HNE. PJE exhibited an epigenetic action, evidenced by increased
Dact-1 gene expression in PCa.
Conclusion: PJE could be a natural protector of PCa and prostate lesions associated with HFD intake.