Wu LX, Wang XM, Zhang SK, Liu LJ. Serum-free culture and preliminary identification of gastric cancer cells.
Shijie Huaren Xiaohua Zazhi 2014;
22:1531-1536. [DOI:
10.11569/wcjd.v22.i11.1531]
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Abstract
AIM: To conduct the serum-free culture and preliminary identification of gastric cancer cells.
METHODS: We used serum-free DMEM/F12 medium to culture gastric cancer cell line SGC7901 and screened the stem cells of gastric cancer cell line. Tumorospheres were counted by random counting method. CD24+, CD44+ and Snail+ cells in tumorosphere were detected by flow cytometry, and expression of Snail protein in tumorospheres was detected by Western blot.
RESULTS: After gastric cancer cell line SGC7901 was maintained in serum-free medium for about a week, the largest number of tumorospheres formed. The numbers of CD24+, CD44+ and Snail+ cells in tumorospheres were significantly more than those in the control cells (P < 0.05). Snail protein was highly expressed in tumorospheres.
CONCLUSION: Serum-free suspension culture method allows to obtain gastric tumorospheres. Snail+ cells and expression of Snail significantly increased in tumorospheres in which the number of CD24+/CD44+ cells has a remarkable increase.
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