Production and characterization of multipotente and induced pluripotent cells in Blastocerus dichotomus

• Grant number: 13/13972-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2013
• End date: February 28, 2017
• Field of knowledge: Agronomical Sciences - Veterinary Medicine - Animal Reproduction
• Principal Investigator: José Maurício Barbanti Duarte
• Grantee: Luciana Diniz Rola
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated scholarship(s): 14/02439-2 - Production and characterization of multipotent and induced pluripotent cells in Blastocerus dichotomus, BE.EP.DR

Abstract

Cryopreservation of gametes and embryos is extremely important for maintenance of genetic variability in small wild populations, however these materials are difficult to obtain. Studies with human and mouse induced pluripotent stem cells (iPS) have showed that cells are capable to differentiate into germ cells, sperm and oocytes. Studies with iPS in cervids are novel, so we have as focus on this project to establish protocols for obtaining stable iPS lines in Blastocerus dichotomus species to produce viable gametes in the future. Reprogramming of somatic cells into iPS cells is facilitated by the use of adult stem cells and, because little is known about the multipotent stem cells in cervids, the first phase of the project aims to obtain biopsies from various tissues (adipose tissue, dental pulp, antler button), that will be compared with unipotentes cell lines derived from skin biopsies (negative control). The viability of the cells will be assessed with trypan blue, and markers of mesenchymal cells will be assessed by RT-qPCR. Subsequently, these tissues will be cryopreserved and your viability after thawing will be tested. The second phase will focus in the derivation of iPS cells from multipotent lines of the preceding phase, which is conducted by means of gene transduction using the PiggyBac tool. The cultures for derivation of iPS will be made in the presence of mouse embryonic fibroblast (MEF) blocked by mitomycin, and colonies selected will be subcultured to maintain lines for further characterization by immunocytochemistry, RT-qPCR, alkaline phosphatase activity, lacZ dye, karyotype, ability to form embryoid bodies, cells differentiate into germline of females, evaluation of markers of tissues derived from the three germ layers, and in vitro differentiation in immunodeficient mice to assess the formation of the three germ layers.

Scientific publications

(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)

BUZANSKAS, MARCOS ELI; GROSSI, DANIELA DO AMARAL; VENTURA, RICARDO VIEIRA; SCHENKEL, FLAVIO SCHRAMM; SELEGUIM CHUD, TATIANE CRISTINA; STAFUZZA, NEDENIA BONVINO; ROLA, LUCIANA DINIZ; CONCEICAO MEIRELLES, SARAH LAGUNA; MOKRY, FABIANA BARICHELLO; MUDADU, MAURICIO DE ALVARENGA; et al. Candidate genes for male and female reproductive traits in Canchim beef cattle. JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY, v. 8, AUG 23 2017. (13/13972-0, 15/08939-0)

BUZANSKAS, M. E.; PIRES, P. S.; CHUD, T. C. S.; BERNARDES, P. A.; ROLA, L. D.; SAVEGNAGO, R. P.; LOBO, R. B.; MUNARI, D. P.. Parameter estimates for reproductive and carcass traits in Nelore beef cattle. Theriogenology, v. 92, p. 204-209, APR 1 2017. (13/20091-0, 15/08939-0, 13/13972-0, 13/19335-2, 15/25096-6)

BUZANSKAS, MARCOS ELI; GROSSI, DANIELA DO AMARAL; VENTURA, RICARDO VIEIRA; SCHENKEL, FLAVIO SCHRAMM; SELEGUIM CHUD, TATIANE CRISTINA; STAFUZZA, NEDENIA BONVINO; ROLA, LUCIANA DINIZ; CONCEICAO MEIRELLES, SARAH LAGUNA; MOKRY, FABIANA BARICHELLO; MUDADU, MAURICIO DE ALVARENGA; et al. Candidate genes for male and female reproductive traits in Canchim beef cattle. JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY, v. 8, p. 10-pg., 2017-08-23. (13/13972-0, 15/08939-0)