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Isolation, expansion, and differentiation of goat adipose-derived stem cells
Authors:Ren Yu  Wu Haiqing  Zhou Xueyuan  Wen Jianxun  Jin Muzi  Cang Ming  Guo Xudong  Wang Qinglian  Liu Dongjun  Ma Yuzhen
Affiliation:Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China.
Abstract:A goat adipose-derived stem cell (ADSC) line was established and compared to a rat line. Goat ADSC cells had normal diploidy after subculture. Proliferation of goat ADSCs was faster than rat cells in the same conditions. Both rat and goat ADSCs stained positively for vimentin, CD49d, CD44 and CD13, but stained negatively for CD34 and CD106. Bone nodules were apparent, and alizarin staining was positive after osteogenic induction. Cells expressing osteocalcin were positive by alkaline phosphatase (ALP) staining. After osteogenic induction, ossification nodules of goat ADSCs were larger than in rats, with dense ALP staining. Adipogenic induction resulting in lipid droplets and peroxisome proliferator-activated receptor (PPARγ2) expression were observed. Cartilage lacunae were formed and COL2A1 was expressed. More cartilage lacunae with better morphology were seen following differentiation of goat ADSC's using the hang-drop method. For goat ADSCs, results with both adherent-induced and hanging-drop induced cultures were better than for three-dimensional cultures.
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