水牛乳汁中乳腺上皮细胞的分离培养及鉴定

doi:10.16431/j.cnki.1671-7236.2017.11.019

Abstract

Abstract:

This study was aimed to set up a simple, economic and pure method to culture and identify buffalo mammary epithelial cell in vitro, which were collected from the fresh milk. The milk was collected in the late lactation period of the high yield milk buffalo, then it was mixed with the PBS in the ratio of 2:1 and centrifugated. A few suspernatants and the pellets were resuspended with the PBS when the milk fat were decanted, then recntrifuged. The final pellets and 1 mL of suspernatants were seeded in petri dish without fat, respectively. The isolated cells were mammary epithelial cells which were identified by cell morphology, immunofluorescence, growth curve, cell viability and RT-PCR. The buffalo mammary epithelial cells were successfully isolated from both the pellets and supernatants. The cells and impurities were less in the supernatants than that in the pellets. The cells were cobblestone-like without fibroblasts and most in cell division. In the post-confluent culture, mammary epithelial cells formed dome structures and layer-separated growth. The cells expressed cytokeratin 18 was identified by immunofluorescence which was the marker of mammary cells. The cell growth curve and cell survival rate were measured. The results showed that the buffalo mammary epithelial cells were activity and easy to attach. The mammary epithelial cells were expressed of milk protein and milk fat related genes detected by RT-PCR. The buffalo mammary epithelial cell line were successfully isolated and identified from fresh milk, which estabilished foundation for the study of the mechanism of lactation, the amelioration of the quality of milk and the improvement of milk yield of buffalo.

Key words: buffalo; milk; mammary epithelial cell; primary culture

CLC Number:

S814.1

DUAN An-qin, PANG Chun-ying, ZHU Peng, DENG Ting-xian, LU Xing-rong, MA Xiao-ya, LIANG Sha-sha, LIANG Xian-wei. Isolation, Culture and Identification of Buffalo Mammary Epithelial Cells from Milk[J]. , 2017, 44(11): 3243-3249.

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Isolation, Culture and Identification of Buffalo Mammary Epithelial Cells from Milk

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