How can food extracts consumed in the Mediterranean and East Asia suppress prostate cancer proliferation?

We have developed a blend of food extracts commonly consumed in the Mediterranean and East Asia, named blueberry punch (BBP), with the ultimate aim to formulate a chemoprevention strategy to inhibit prostate cancer progression in men on active surveillance protocol. We demonstrated previously that B...

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Veröffentlicht in:British journal of nutrition 2012-08, Vol.108 (3), p.424-430
Hauptverfasser: Yao, Mu, Xie, Chanlu, Constantine, Maryrose, Hua, Sheng, Hambly, Brett D., Jardine, Greg, Sved, Paul, Dong, Qihan
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container_end_page 430
container_issue 3
container_start_page 424
container_title British journal of nutrition
container_volume 108
creator Yao, Mu
Xie, Chanlu
Constantine, Maryrose
Hua, Sheng
Hambly, Brett D.
Jardine, Greg
Sved, Paul
Dong, Qihan
description We have developed a blend of food extracts commonly consumed in the Mediterranean and East Asia, named blueberry punch (BBP), with the ultimate aim to formulate a chemoprevention strategy to inhibit prostate cancer progression in men on active surveillance protocol. We demonstrated previously that BBP inhibited prostate cancer cell proliferation in vitro and in vivo. The purpose of this study was to determine the molecular mechanism responsible for the suppression of prostate cancer cell proliferation by BBP. Treatment of lymph node-metastasised prostate cancer cells (LNCaP) and bone-metastasised prostate cancer cells (PC-3 and MDA-PCa-2b) with BBP (up to 0·8 %) for 72 h increased the percentage of cells at the G0/G1 phase and decreased those at the S and G2/M phases. The finding was supported by the reduction in the percentage of Ki-67-positive cells and of DNA synthesis measured by the incorporation of 5-ethynyl-2′-deoxyuridine. Concomitantly, BBP treatment decreased the protein levels of phosphorylated retinoblastoma, cyclin D1 and E, cyclin-dependent kinase (CDK) 4 and 2, and pre-replication complex (CDC6 and MCM7) in LNCaP and PC-3 cells, whereas CDK inhibitor p27 was elevated in these cell lines. In conclusion, BBP exerts its anti-proliferative effect on prostate cancer cells by modulating the expression and phosphorylation of multiple regulatory proteins essential for cell proliferation.
doi_str_mv 10.1017/S0007114511005770
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We demonstrated previously that BBP inhibited prostate cancer cell proliferation in vitro and in vivo. The purpose of this study was to determine the molecular mechanism responsible for the suppression of prostate cancer cell proliferation by BBP. Treatment of lymph node-metastasised prostate cancer cells (LNCaP) and bone-metastasised prostate cancer cells (PC-3 and MDA-PCa-2b) with BBP (up to 0·8 %) for 72 h increased the percentage of cells at the G0/G1 phase and decreased those at the S and G2/M phases. The finding was supported by the reduction in the percentage of Ki-67-positive cells and of DNA synthesis measured by the incorporation of 5-ethynyl-2′-deoxyuridine. Concomitantly, BBP treatment decreased the protein levels of phosphorylated retinoblastoma, cyclin D1 and E, cyclin-dependent kinase (CDK) 4 and 2, and pre-replication complex (CDC6 and MCM7) in LNCaP and PC-3 cells, whereas CDK inhibitor p27 was elevated in these cell lines. 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We demonstrated previously that BBP inhibited prostate cancer cell proliferation in vitro and in vivo. The purpose of this study was to determine the molecular mechanism responsible for the suppression of prostate cancer cell proliferation by BBP. Treatment of lymph node-metastasised prostate cancer cells (LNCaP) and bone-metastasised prostate cancer cells (PC-3 and MDA-PCa-2b) with BBP (up to 0·8 %) for 72 h increased the percentage of cells at the G0/G1 phase and decreased those at the S and G2/M phases. The finding was supported by the reduction in the percentage of Ki-67-positive cells and of DNA synthesis measured by the incorporation of 5-ethynyl-2′-deoxyuridine. Concomitantly, BBP treatment decreased the protein levels of phosphorylated retinoblastoma, cyclin D1 and E, cyclin-dependent kinase (CDK) 4 and 2, and pre-replication complex (CDC6 and MCM7) in LNCaP and PC-3 cells, whereas CDK inhibitor p27 was elevated in these cell lines. In conclusion, BBP exerts its anti-proliferative effect on prostate cancer cells by modulating the expression and phosphorylation of multiple regulatory proteins essential for cell proliferation.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><pmid>22067725</pmid><doi>10.1017/S0007114511005770</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Antineoplastic Agents, Phytogenic - administration & dosage
Antineoplastic Agents, Phytogenic - chemistry
Antineoplastic Agents, Phytogenic - pharmacology
Antioxidants
Biological and medical sciences
Cell Cycle - drug effects
Cell Cycle Proteins - genetics
Cell Cycle Proteins - metabolism
Cell Line, Tumor
Cell Proliferation - drug effects
Cellular biology
Cyclin-Dependent Kinase Inhibitor Proteins - genetics
Cyclin-Dependent Kinase Inhibitor Proteins - metabolism
Cyclin-Dependent Kinases - genetics
Cyclin-Dependent Kinases - metabolism
Cyclins - genetics
Cyclins - metabolism
DNA-Binding Proteins - genetics
DNA-Binding Proteins - metabolism
Dose-Response Relationship, Drug
Far East
Feeding. Feeding behavior
Food Analysis
Fundamental and applied biological sciences. Psychology
Gene Expression Regulation - physiology
Humans
Male
Mediterranean Region
Minichromosome Maintenance Complex Component 7
Molecular Nutrition
Nuclear Proteins - genetics
Nuclear Proteins - metabolism
Plant Extracts - administration & dosage
Plant Extracts - chemistry
Plant Extracts - pharmacology
Prostate cancer
Prostatic Neoplasms - prevention & control
Vaccinium
Vertebrates: anatomy and physiology, studies on body, several organs or systems
title How can food extracts consumed in the Mediterranean and East Asia suppress prostate cancer proliferation?
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