Translator Disclaimer
1 June 2001 Clonal Lines of Transgenic Fibroblast Cells Derived from the Same Fetus Result in Different Development When Used for Nuclear Transfer in Pigs
Author Affiliations +
Abstract

Different factors are believed to influence the outcome of nuclear transfer (NT) experiments. Besides the cell cycle stage of both recipient cytoplast and donor karyoplast, the origin of the donor cells (embryonic, fetal, and adult) is of interest. We compared in vitro development of NT embryos derived from small serum-starved (G0) or small cycling (G1) porcine fetal fibroblast cells. Serum starvation did not have a positive effect on cleavage rate or the percentage of embryos that developed to the morula and blastocyst stages. Next, we investigated the development of porcine NT embryos derived from different transgenic clonal cell lines that had originated from the same fetus. When different clonal lines of fetal fibroblasts were fused to enucleated metaphase II oocytes, differences in fusion rates as well as in development to the morula and blastocyst stages were observed (P < 0.05). When oocytes derived from sow ovaries were used as recipient cytoplasts, significantly better cleavage (P = 0.03) and blastocyst formation (P < 0.014) was obtained when compared with oocytes derived from gilts. Our data indicate that not only different cell lines, but also different clones derived from one primary cell line, result in different development when used for NT. In addition, the use of sow oocytes as a cytoplast source also improves the efficiency of NT experiments.

B. Kühholzer, R. J. Hawley, L. Lai, D. Kolber-Simonds, and R. S. Prather "Clonal Lines of Transgenic Fibroblast Cells Derived from the Same Fetus Result in Different Development When Used for Nuclear Transfer in Pigs," Biology of Reproduction 64(6), 1695-1698, (1 June 2001). https://doi.org/10.1095/biolreprod64.6.1695
Received: 30 October 2000; Accepted: 1 January 2001; Published: 1 June 2001
JOURNAL ARTICLE
4 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top