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Could be FOXO3a, miR-96-5p and miR-182-5p useful for Brazilian women with luminal A and triple negative breast cancers prognosis and target therapy?
Mendes, Daniele Carvalho Calvano; Calvano Filho, Carlos Marino Cabral; Garcia, Natália; Ricci, Marcos Desidério; Soares Júnior, José Maria; Carvalho, Katia Candido; Baracat, Edmund Chada.
Affiliation
  • Mendes, Daniele Carvalho Calvano; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Calvano Filho, Carlos Marino Cabral; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Garcia, Natália; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Ricci, Marcos Desidério; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Soares Júnior, José Maria; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Carvalho, Katia Candido; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
  • Baracat, Edmund Chada; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, HCFMUSP. Departamento de Obstetrícia e Ginecologia. Disciplina de Ginecologia. São Paulo. BR
Clinics ; Clinics;78: 100155, 2023. tab, graf
Article de En | LILACS-Express | LILACS | ID: biblio-1421270
Bibliothèque responsable: BR1.1
ABSTRACT
Abstract FOXO3a dysregulation is frequently implicated in tumorigenesis, and its inhibition can occur by several molecular mechanisms. Among these, post-transcriptional suppression by miRNAs has been associated with various cancers initiation. Here, we assessed the expression profiles of the most relevant miRNAs for breast tumorigenesis, using Luminal A (LA) and Triple-Negative (TN) breast cancer from Brazilian patients, by the quantitative real time-PCR method. Their potential prognostic role for the patients was also evaluated. We identified the miRNAs miR-96-5p and miR-182-5p, de-scribed as negative regulators of FOXO3A, with differential expression both in LA and TN tumors when compared to normal tissue. The miR-96-5p and miR-182-5p miRNAs were upregulated in LA (7.82 times, p < 0.005; 6.12 times, p < 0.005, respectively) and TN breast cancer samples (9.42 times, p < 0.0001; 8.51 times, p < 0.0001) compared to normal tissues. The samples with higher miR-96-5p and miR-182-5p expression (FR ≥ 4) were submitted for FOXO3a immunostaining. Reduced protein detection was observed in all of the tumors compared to normal tissues. The most prominent miRNA expression and FOXO3a protein suppression were observed in TN samples (p < 0.001), indicating the relevant role of these molecules in this tumor biology and clinical behavior. Our results corroborate the literature regarding to the relevance of FOXO3a in the breast cancer, and they open new perspectives for alternative target therapy options for Brazilian patients expressing both FOXO3a and its regulatory miRNAs.
Mots clés

Texte intégral: 1 Indice: LILACS Type d'étude: Prognostic_studies Pays comme sujet: America do sul / Brasil langue: En Texte intégral: Clinics Thème du journal: MEDICINA Année: 2023 Type: Article / Project document

Texte intégral: 1 Indice: LILACS Type d'étude: Prognostic_studies Pays comme sujet: America do sul / Brasil langue: En Texte intégral: Clinics Thème du journal: MEDICINA Année: 2023 Type: Article / Project document