title: The expression of β-galactosidase during long-term cultured goat skin fibroblasts and the effect of donor cell passage on in vitro development of nuclear transfer embryos.
abstract: The present study aimed to detect the expression of β-galactosidase during long-term cultured goat skin fibroblasts and investigate the effects of donor goat age, sex, and cell passage on senescence and the effects of donor cell passage on in vitro development of nuclear transfer embryos. The results showed that, in the same cell passage, more β-galactosidase-positive cells were detected in cells from older donors than younger donors. Irrespective of the donor age, the number of positive cells was higher in later passages from passages 20 to 50. In the same passage from 20 to 50, the β-galactosidase-positive rate was higher in cells from 5-yr female goat than 5-yr male goat. Using fibroblasts from male goats at various passages as donor cells, reconstructed embryos had similar fusion and cleavage rates, but the blastocyst rate was higher for cells at passages 10 and 20 than passage 30. In conclusion, donor goat age and cell passage had significant effects on the β-galactosidase-positive rate; also, cells from 5-yr female goat had a higher β-galactosidase-positive rate than those from 5-yr male goat, and the donor cell passage affected the developmental potential of nuclear transfer embryos.
authors.affiliation: Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, 300384, China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Liu
authors.affiliation: College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Peng
authors.affiliation: College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
authors.affiliation: College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Ma
authors.affiliation: College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China. zwcfz@163.com.
authors.forename: Wenchang
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000818:Animals; D018929:Cell Culture Techniques / Q000662:veterinary; D049109:Cell Proliferation; D016922:Cellular Senescence; D047108:Embryonic Development; D005260:Female; D005347:Fibroblasts / Q000166:cytology / Q000378:metabolism*; D006041:Goats / Q000378:metabolism*; D008297:Male; D053652:Nuclear Transfer Techniques / Q000662:veterinary*; D012737:Sex Factors; D013997:Time Factors; D001616:beta-Galactosidase / Q000378:metabolism*
chemical_list: D001616:beta-Galactosidase
keywords: Cell passage; Donor age; Donor sex; Goat; Nuclear transfer embryo; β-Galactosidase