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Biological changes of papaya pectins with possible benefits to human health

Grant number: 12/23970-2
Support type:Research Grants - Young Investigators Grants
Duration: March 01, 2014 - February 28, 2019
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Science
Principal Investigator:Joao Paulo Fabi
Grantee:Joao Paulo Fabi
Home Institution: Faculdade de Ciências Farmacêuticas (FCF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated grant(s):15/01004-5 - Multi-User Equipment approved in grant 2012/23970-2: QuantStudio 7 flex Real-Time PCR system, 96-well fast, laptop (catalog #: 4485698), AP.EMU
Associated scholarship(s):18/12603-5 - Effects of treatment on intestinal cancer cells with pectins isolated from chayote, papaya and passion fruit, BP.IC
18/06255-4 - In vitro effect of pectins treatments from unripe and ripe papayas in colon cancer cells spheroids, BP.IC
18/06266-6 - Effect of treatments with unripe and ripe papaya fiber in a model of in vivo colon carcinogenesis, BP.IC
+ associated scholarships 18/06274-9 - Effect of papaya cell wall treatment with pectinases in colon cancer cells, BP.IC
18/05900-3 - Effects of in vitro inhibition of TLRs 2, 3 and 4 from human colorretal cancer cells during papaya pectin treatment, BP.IC
16/19657-8 - Effect of acidic and neutral papaya polysaccharides on colon cancer cells, BP.IC
16/10895-3 - The biological effects of modified pectins extracted from different fruits on colon cancer cells, BP.DD
15/15661-8 - Effects of cancer cells treatment with pectins from different plant types, BP.IC
14/06535-6 - Pectic depolymerization during papaya fruit riperning: solubilization in oligosaccharides, BP.IC - associated scholarships


Fleshy fruits are considered as rich in soluble fibers, and its consumption could reduce chronic non-communicable diseases (NCDs) frequency, including some sorts of cancer. Pectin, the main polysaccharides of fleshy fruit soluble fibers, could inhibit the pro-metastatic protein galectin-3 by selective binding of pectin-derived galactans in vivo and in vitro, thus reducing cancer cells growth. Pectin could also be fermented by human intestinal microbiota, inducing growth of symbiotic bacteria and producing short chain fatty acids (SCFA), which could in turn prevent colon cancer. Because of papaya is considered a pectin-rich fruit with great amounts of pectin-derived galactans, the project has the main objective of establishing a correlation between chemical structures of papaya pectins and its probable human consumption benefits. To achieve this goal, experiments comprising cultured cells treated with papaya pectins should be performed, as well as in vitro colonic fermentation and its metagenome. Controlled enzymatic treatments of papaya pectins ("fiber food engineering") could complement a possible improvement on health parameters. The results arose from this study would open new perspectives on the development of functional foods derived from pectin-rich fruits. (AU)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DER AGOPIAN, ROBERTA GHEDINI; FABI, JOAO PAULO; CORDENUNSI-LYSENKO, BEATRIZ ROSANA. Metabolome and proteome of ethylene-treated papayas reveal different pathways to volatile compounds biosynthesis. Food Research International, v. 131, MAY 2020. Web of Science Citations: 0.
PRADO, SAMIRA B. R.; BEUKEMA, MARTIN; JERMENDI, EVA; SCHOLS, HENK A.; DE VOS, PAUL; FABI, JOAO PAULO. Pectin Interaction with Immune Receptors is Modulated by Ripening Process in Papayas. SCIENTIFIC REPORTS, v. 10, n. 1 FEB 3 2020. Web of Science Citations: 0.
RAMOS DO PRADO, SAMIRA BERNARDINO; CASTRO-ALVES, VICTOR COSTA; FERREIRA, GABRIELLE FERNANDEZ; FABI, JOAO PAULO. Ingestion of Non-digestible Carbohydrates From Plant-Source Foods and Decreased Risk of Colorectal Cancer: A Review on the Biological Effects and the Mechanisms of Action. FRONTIERS IN NUTRITION, v. 6, MAY 15 2019. Web of Science Citations: 1.
RAMOS DO PRADO, SAMIRA BERNARDINO; SHIGA, TANIA MISUZU; HARAZONO, YOSUKE; HOGAN, VICTOR A.; RAZ, AVRAHAM; CARPITA, NICHOLAS C.; FABI, JOAO PAULO. Migration and proliferation of cancer cells in culture are differentially affected by molecular size of modified citrus pectin. Carbohydrate Polymers, v. 211, p. 141-151, MAY 1 2019. Web of Science Citations: 4.
FABI, JOAO PAULO; RAMOS DO PRADO, SAMIRA BERNARDINO. Fast and Furious: Ethylene-Triggered Changes in the Metabolism of Papaya Fruit During Ripening. FRONTIERS IN PLANT SCIENCE, v. 10, APR 26 2019. Web of Science Citations: 0.
RAMOS DO PRADO, SAMIRA BERNARDINO; SANTOS, GUSTAVO R. C.; MOURAO, PAULO A. S.; FABI, JOAO PAULO. Chelate-soluble pectin fraction from papaya pulp interacts with galectin-3 and inhibits colon cancer cell proliferation. International Journal of Biological Macromolecules, v. 126, p. 170-178, APR 1 2019. Web of Science Citations: 3.
RAMOS DO PRADO, SAMIRA BERNARDINO; FERREIRA, GABRIELLE FERNANDEZ; HARAZONO, YOSUKE; SHIGA, TANIA MISUZU; RAZ, AVRAHAM; CARPITA, NICHOLAS C.; FABI, JOAO PAULO. Ripening-induced chemical modifications of papaya pectin inhibit cancer cell proliferation. SCIENTIFIC REPORTS, v. 7, NOV 29 2017. Web of Science Citations: 10.
DO PRADO, SAMIRA B. R.; MELFI, PAULO R.; CASTRO-ALVES, VICTOR C.; BROETTO, SABRINA G.; ARAUJO, ELIAS S.; DO NASCIMENTO, JOAO R. O.; FABI, JOAO P. Physiological Degradation of Pectin in Papaya Cell Walls: Release of Long Chains Galacturonans Derived from Insoluble Fractions during Postharvest Fruit Ripening. FRONTIERS IN PLANT SCIENCE, v. 7, JUL 27 2016. Web of Science Citations: 10.

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Filed patent(s) as a result of this research project

Solicitação em análise e dentro do prazo legal de sigilo previsto na legislação BR1020180747860 - Universidade de São Paulo (USP) . Solicitação em análise e dentro do prazo legal de sigilo previsto na legislação - November 2018, 29