Role of Exosomal MicroRnAs and myomiRs in the Development of Cancer Cachexia-Associated Muscle Wasting

Autor(es)

Marinho, Rodolfo ^[1] ; Alcantara, Paulo S. M. ^[2] ; Ottoch, Jose P. ^[2] ; Seelaender, Marilia ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biomed Sci, Canc Metab Res Grp, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Dept Clin Surg, Sao Paulo - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: FRONTIERS IN NUTRITION; v. 4, JAN 9 2018.
• Citações Web of Science: 11

Resumo

Cachexia is a complex metabolic syndrome that promotes great weight loss, with marked muscle mass wasting. In the last years, many efforts have been directed to improve the understanding of the mechanisms involved in the disease. This syndrome is present in up to 80% of cancer patients and, despite its clinical relevance, is underdiagnosed. The orchestration of the molecular and biochemical disruptions observed in cachexia is paralleled by inflammation and the communication among the different body compartments, including the tumor and the skeletal muscle, is still not completely described. One of the mechanisms that may be involved in the transduction of the inflammatory signals and the activation of catabolic status in muscle is the participation of exosomes containing microRNAs (miRNAs) and muscle-specific miRNAs (myomiRs). Exosomes are nanovesicles, measuring from 30 to 100 mu m, and able to carry miRNAs in the circulation, promoting cell-cell and tissue-tissue communication in an autocrine, paracrine, and endocrine manner. miRNAs transported in exosomes are preserved from degradation, while these nanoparticles deliver the cargo to specific cell targets, making communication more efficient. Several miRNAs are known to modulate inflammatory pathways, to induce metastasis, to mediate cancer aggressiveness and even to participate in the regulation of protein synthesis and degradation pathways in the skeletal muscle. The aim of this mini-review is to describe the present knowledge about the role of exosomal miRNAs and myomiRs in the induction of muscle mass wasting in cancer cachexia state and to explain which transcription factors, proteins, and pathways are regulated by these molecules. (AU)

• Processo FAPESP: 12/50079-0 - Inflamação sistêmica em pacientes com caquexia associada ao câncer: mecanismos e estratégias terapêuticas, uma abordagem em medicina translacional
• Beneficiário: Marilia Cerqueira Leite Seelaender
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/19639-0 - Papel dos microRNAs derivados de tumores na indução da perda de massa muscular em pacientes com Caquexia Cancerígena
• Beneficiário: Rodolfo Marinho
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado