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Multi-user equipment approved in grant 2014/22887-0: Nanosight LM10

Grant number: 15/21829-9
Support type:Multi-user Equipment Program
Duration: February 01, 2016 - January 31, 2018
Field of knowledge:Biological Sciences - Genetics - Animal Genetics
Principal Investigator:Juliano Coelho da Silveira
Grantee:Juliano Coelho da Silveira
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
Associated research grant:14/22887-0 - Cell-secreted vesicles containing miRNAs modulate epigenetic changes during in vitro culture of bovine gametes and embryos, AP.JP
As informações de acesso ao Equipamento Multiusuário são de responsabilidade do Pesquisador responsável
EMU web page:http://www.fzea.usp.br/?page_id=7918
Tipo de equipamento:Caracterização de Materiais - Propriedades Físicas - Tamanho de partículas
Fabricante: Malvern
Modelo: Nanosight NS300

Abstract

The use of assisted reproduction techniques presents an alternative to solve reproductive problems in domestic species and humans. However, there is concern that epigenetic changes occurring during in vitro culture adversely affect tissue programing during fetal development and could lead to a higher pre-disposition to develop heart diseases, reproductive problems, and development of tumors, in adulthood. Epigenetic changes are regulated by DNA methylation, posttranscriptional histone modifications or microRNAs. MicroRNAs are non-coding RNA molecules that regulates gene expression during different tissue developing processes. Recently, cell-secreted vesicles called exosomes and microvesicles carrying bioactive materials including miRNAs were identified in different body fluids. Cell-secreted vesicles are considered a new class of intercellular communication with possible implications in different physiological processes. However, its role during oocyte maturation and embryo development is not well understood. Our main hypothesis that will be tested is that cell-secreted vesicles originating from the reproductive tract modulate epigenetic changes during in vitro culture of gametes and embryos. In order to test this hypothesis cell-secreted vesicles will be isolated from follicular fluid and oviductual cells culture media and added to the oocyte maturation and embryo culture media. The first aim of this project is to determine the relationship between miRNAs and epigenetic changes during oocyte maturation and embryo development in vitro. The second aim of this project is to determine the effects exerted by vesicles secreted by reproductive tract cells on oocyte maturation rates, fertilization and embryo cleavage. The third aim of this proposal is to determine the role of cell-secreted vesicles and miRNAs in oocyte maturation and production of bovine embryos in high and low oxygen tension. Results obtained in this research will establish the role of cell-secreted vesicles by the reproductive tract in regulating epigenetic changes acquired during in vitro culture of oocytes and embryos, generating new therapeutic tools for domestic agriculture species and humans. (AU)

Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE AVILA, A. C. F. C. M.; DA SILVEIRA, J. C. Role of extracellular vesicles during oocyte maturation and early embryo development. REPRODUCTION FERTILITY AND DEVELOPMENT, v. 32, n. 1-2, p. 56-64, 2020. Web of Science Citations: 0.
SANTOS ROBALLO, KELLY CRISTINE; DA SILVEIRA, JULIANO COELHO; BRESSAN, FABIANA FERNANDES; DE SOUZA, ALINE FERNANDA; PEREIRA, VITORIA MATTOS; PINZON PORRAS, JORGE ELIECER; ROS, FELIPE AUGUSTO; PULZ, LIDIA HILDEBRAND; STREFEZZI, RICARDO DE FRANCISCO; MARTINS, DANIELE DOS SANTOS; MEIRELLES, FLAVIO VIEIRA; AMBROSIO, CARLOS EDUARDO. Neurons-derived extracellular vesicles promote neural differentiation of ADSCs: a model to prevent peripheral nerve degeneration. SCIENTIFIC REPORTS, v. 9, AUG 1 2019. Web of Science Citations: 0.
ANDRADE, GABRIELLA MAMEDE; BOMFIM, MONALISA MEDRADO; DEL COLLADO, MAITE; MEIRELLES, FLAVIO VIEIRA; PERECIN, FELIPE; DA SILVEIRA, JULIANO COELHO. Oxygen tension modulates extracellular vesicles and its miRNA contents in bovine embryo culture medium. Molecular Reproduction and Development, v. 86, n. 8, p. 1067-1080, AUG 2019. Web of Science Citations: 0.
SANTOS, G.; BOTTINO, M. P.; SANTOS, A. P. C.; SIMOES, L. M. S.; SOUZA, J. C.; FERREIRA, M. B. D.; DA SILVEIRA, J. C.; AVILA, A. C. F. C. M.; BRIDE, A.; SALES, J. N. S. Subclinical mastitis interferes with ovulation, oocyte and granulosa cell quality in dairy cows. Theriogenology, v. 119, p. 214-219, OCT 1 2018. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.