| Texto completo | |
| Autor(es): |
Bartolomeu, Ariane Rocha
;
Romualdo, Guilherme Ribeiro
;
Lison, Carmen Grinan
;
Besharat, Zein Mersini
;
Marchal Corrales, Juan Antonio
;
Garcia Chaves, Maria Angel
;
Barbisan, Luis Fernando
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 23, n. 11, p. 16-pg., 2022-06-01. |
| Resumo | |
Colorectal cancer (CRC) is one of most common cancers worldwide, with high rates of mortality. Epidemiological findings demonstrate that coffee consumption reduces the risk of developing CRC by similar to 13%. In general, in vivo and in vitro findings demonstrate the antiproliferative, antioxidant and proapoptotic effects of brewed coffee or major bioavailable coffee compounds. Thus, it was assessed whether caffeine (CAF) and/or chlorogenic acid (CGA) attenuates the early-stage of chemically induced mouse colon carcinogenesis. Male Swiss mice were submitted to a 1,2-dimethylhydrazine/deoxycholic acid (DMH/DCA)-induced colon carcinogenesis model. These animals received CAF (50 mg/kg), CGA (25 mg/kg) or CAF+CGA (50 + 25 mg/kg) intragastrically for five times/week for ten weeks. CAF+CGA had the most pronounced effects on decreasing epithelial cell proliferation (Ki-67) and increasing apoptosis (cleaved caspase-3) in colonic crypts. This treatment also decreased the levels of proinflammatory cytokines IL-6, IL-17 and TNF-alpha, and downregulated the oncomiR miR-21a-5p in the colon. Accordingly, the analysis of miR-21a-5p targets demonstrated the genes involved in the negative regulation of proliferation and inflammation, and the positive regulation of apoptosis. Ultimately, CAF+CGA attenuated preneoplastic aberrant crypt foci (ACF) development. Our findings suggest that a combination of coffee compounds reduces early-stage colon carcinogenesis by the modulation of miR-21a-5p expression, highlighting the importance of coffee intake to prevent CRC. (AU) | |
| Processo FAPESP: | 17/26217-7 - Ação de compostos bioativos do café em células tumorais e na modulação da expressão de miRNAs durante a carcinogênese de cólon |
| Beneficiário: | Ariane Rocha Bartolomeu |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/12015-0 - Cafeína, Trigonelina e Ácido Clorogênico: Modulação da expressão de miRNAs na Hepatocarcinogênese associada à Fibrose. |
| Beneficiário: | Guilherme Ribeiro Romualdo |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/14420-0 - Expressão de miRNAs na Hepatocarcinogênese associada à Fibrose: modulação pela Cafeína, Trigonelina e Ácido Clorogênico |
| Beneficiário: | Luís Fernando Barbisan |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |