JULIANA MONTE REAL
Projetos de Pesquisa
Unidades Organizacionais
LIM/24 - Laboratório de Oncologia Experimental, Hospital das Clínicas, Faculdade de Medicina
3 resultados
Resultados de Busca
Agora exibindo 1 - 3 de 3
- Exosomes from patients with septic shock convey miRNAs related to inflammation and cell cycle regulation: new signaling pathways in sepsis?(2018) REAL, Juliana Monte; FERREIRA, Ludmila Rodrigues Pinto; ESTEVES, Gustavo Henrique; KOYAMA, Fernanda Christtanini; DIAS, Marcos Vincius Salles; BEZERRA-NETO, Joao Evangelista; CUNHA-NETO, Edecio; MACHADO, Flavia Ribeiro; SALOMAO, Reinaldo; AZEVEDO, Luciano Cesar PontesBackground: Exosomes isolated from plasma of patients with sepsis may induce vascular apoptosis and myocardial dysfunction by mechanisms related to inflammation and oxidative stress. Despite previous studies demonstrating that these vesicles contain genetic material related to cellular communication, their molecular cargo during sepsis is relatively unknown. In this study, we evaluated the presence of microRNAs (miRNAs) and messenger RNAs (mRNAs) related to inflammatory response and redox metabolism in exosomes of patients with septic shock. Methods: Blood samples were collected from 24 patients with septic shock at ICU admission and after 7 days of treatment. Twelve healthy volunteers were used as control subjects. Exosomes were isolated by ultracentrifugation, and their miRNA and mRNA content was evaluated by qRT-PCR array. Results: As compared with healthy volunteers, exosomes from patients with sepsis had significant changes in 65 exosomal miRNAs. Twenty-eight miRNAs were differentially expressed, both at enrollment and after 7 days, with similar kinetics (18 miRNAs upregulated and 10 downregulated). At enrollment, 35 differentially expressed miRNAs clustered patients with sepsis according to survival. The pathways enriched by the miRNAs of patients with sepsis compared with control subjects were related mostly to inflammatory response. The comparison of miRNAs from patients with sepsis according to hospital survival demonstrated pathways related mostly to cell cycle regulation. At enrollment, sepsis was associated with significant increases in the expression of mRNAs related to redox metabolism (myeloperoxidase, 64-fold; PRDX3, 2.6-fold; SOD2, 2.2-fold) and redox-responsive genes (FOXM1, 21-fold; SELS, 16-fold; GLRX2, 3.4-fold). The expression of myeloperoxidase mRNA remained elevated after 7 days (65-fold). Conclusions: Exosomes from patients with septic shock convey miRNAs and mRNAs related to pathogenic pathways, including inflammatory response, oxidative stress, and cell cycle regulation. Exosomes may represent a novel mechanism for intercellular communication during sepsis.
- Soluble PD-1 and PD-L1 as potential biomarkers for classical Hodgkin lymphoma(2018) SILVA, Priscilla Brito da; REAL, Juliana Monte; FERREIRA, Ludmila Rodrigues Pinto; ESTEVES, Gustavo H.; BRITO, Fabio do Nascimento; BAIOCCHI, Otavio C. G.
- Integration of miRNA and gene expression profiles suggest a role for miRNAs in the pathobiological processes of acute Trypanosoma cruzi infection(2017) FERREIRA, Ludmila Rodrigues Pinto; FERREIRA, Frederico Moraes; LAUGIER, Laurie; CABANTOUS, Sandrine; NAVARRO, Isabela Cunha; CANDIDO, Darlan da Silva; RIGAUD, Vagner Carvalho; REAL, Juliana Monte; PEREIRA, Glaucia Vilar; PEREIRA, Isabela Resende; RUIVO, Leonardo; PANDEY, Ramendra Pati; SAVOIA, Marilda; KALIL, Jorge; LANNES-VIEIRA, Joseli; NAKAYA, Helder; CHEVILLARD, Christophe; CUNHA-NETO, EdecioChagas disease, caused by the parasite Trypanosoma cruzi, is endemic in Latin America. Its acute phase is associated with high parasitism, myocarditis and profound myocardial gene expression changes. A chronic phase ensues where 30% develop severe heart lesions. Mouse models of T. cruzi infection have been used to study heart damage in Chagas disease. The aim of this study was to provide an interactome between miRNAs and their targetome in Chagas heart disease by integrating gene and microRNA expression profiling data from hearts of T. cruzi infected mice. Gene expression profiling revealed enrichment in biological processes and pathways associated with immune response and metabolism. Pathways, functional and upstream regulator analysis of the intersections between predicted targets of differentially expressed microRNAs and differentially expressed mRNAs revealed enrichment in biological processes and pathways such as IFN gamma, TNF alpha, NF-kappa B signaling signatures, CTL-mediated apoptosis, mitochondrial dysfunction, and Nrf2-modulated antioxidative responses. We also observed enrichment in other key heart disease-related processes like myocarditis, fibrosis, hypertrophy and arrhythmia. Our correlation study suggests that miRNAs may be implicated in the pathophysiological processes taking place the hearts of acutely T. cruzi-infected mice.