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Veterinary Medicine InternationalVolume 2011 2011, Article ID 694817, 9 pages

Review Article

Departamento de Reprodução Animal, FCAV-UNESP, 14884-000-Jaboticabal, SP, Brazil

Instituto de Zootecnia, Estação Experimental de Zootecnia de Sertãozinho, Caixa Postal 63, 14.160-970-Sertãozinho, SP, Brazil

Received 31 May 2010; Revised 28 July 2010; Accepted 10 September 2010

Academic Editor: Kyle Orwig

Copyright © 2011 Fabio Morato Monteiro et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The low efficiency observed in cloning by nuclear transfer is related to an aberrant gene expression following errors in epigenetic reprogramming. Recent studies have focused on further understanding of the modifications that take place in the chromatin of embryos during the preimplantation period, through the use of chromatin modifying agents. The goal of these studies is to identify the factors involved in nuclear reprogramming and to adjust in vitro manipulations in order to better mimic in vivo conditions. Therefore, proper knowledge of epigenetic reprogramming is necessary to prevent possible epigenetic errors and to improve efficiency and the use of in vitro fertilization and cloning technologies in cattle and other species.





Autor: Fabio Morato Monteiro, Clara Slade Oliveira, Letícia Zoccolaro Oliveira, Naiara Zoccal Saraiva, Maria Eugênia Zerlotti Merca

Fuente: https://www.hindawi.com/



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