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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Betulinic acid exerts antigenotoxic and anticarcinogenic activities via inhibition of COX-2 and PCNA in rodents

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Author(s):
Ferreira, Natalia H. [1] ; Cunha, Nayanne L. [1] ; de Melo, Matheus R. S. [1] ; Fernandes, Fernanda S. [1] ; de Freitas, Karoline S. [1] ; do Nascimento, Samuel [1] ; Ribeiro, Arthur B. [1] ; de Silva, Marcio L. [1] ; Cunha, Wilson R. [1] ; Tavares, Denise C. [1]
Total Authors: 10
Affiliation:
[1] Univ Franca, Mutagenesis Lab & Organ Chem Lab, Ave Dr, 201 Parque Univ, BR-14404600 Franca, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF BIOCHEMICAL AND MOLECULAR TOXICOLOGY; v. 35, n. 12 SEP 2021.
Web of Science Citations: 0
Abstract

Phytochemicals have been suggested as an effective strategy for cancer prevention. Within this context, triterpene betulinic acid (BA) exhibits several biological properties but its chemopreventive effect has not been fully demonstrated. The present study investigated the antigenotoxic potential of BA against doxorubicin (DXR)-induced genotoxicity using the mouse peripheral blood micronucleus assay, as well as its anticarcinogenic activity against 1,2dimethylhydrazine (DMH)-induced colorectal lesions in rats. Micronuclei (MN) assay and aberrant crypt foci assay were used to assess the antigenotoxic and the anticarcinogenic potential, respectively. The molecular mechanisms underlying the anticarcinogenic activity of BA were evaluated by assessing anti-inflammatory (COX-2) and antiproliferative (PCNA) pathways. The results demonstrated that BA at the dose of 0.5 mg/kg bodyweight exerted antigenotoxic effects against DXR, with a reduction of 70.2% in the frequencies of chromosomal damage. Animals treated with BA showed a 64% reduction in the number of preneoplastic lesions when compared to those treated with the carcinogen alone. The levels of COX-2 and PCNA expression in the colon were significantly lower in animals treated with BA and DMH compared to those treated with the carcinogen alone. The chemopreventive effect of BA is related, at least in part, to its antiproliferative and anti-inflammatory activity, indicating a promising potential of this triterpene in anticancer therapies, especially for colorectal cancer. (AU)

FAPESP's process: 18/02370-3 - Evaluation of the quimiopreventive potential of the Brazilian propolis red HYDROALCOOLIC extract
Grantee:Karoline Soares de Freitas
Support Opportunities: Scholarships in Brazil - Master