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Learn MoreIn this study, we established a successive xenograft model to enrich Epstein-Barr virus-associated gastric carcinoma (EBVaGC) cancer stem cells (CSCs) through long-term treatment of EBVaGC cell line SNU719 with 5-Fluorouraci (5-Fu) in mice vivo passage. Simply, NOD/SCID mice injected in the subcutaneous with SNU719 were treated with 5-Fu weekly until xenografts reached 1.5 cm diameter and the mice were euthanizedand single-cell suspensions were obtainedby collagenasedigestion. Then the purified cells were passaged in 5-Fu-treated NOD/SCID mice as above. After four successive generations,we obtained theSNU-4th cells from the fourth passage xenografts treated with 5-Fu. Compared with parental SNU719 cells, SNU-4th cells possessed the stemness characters. Increasing evidence have proved that circular RNA (circRNA) play an important role in maintaining the tumor phenotype. So, we compared circRNAs expression between the fourth passage xenografts treated with 5-Fu and PBS by RNA-sequencing, hoping to find out which circRNAs were involved in the stemness regulation of EBVaGC.; we established a highly malignant EBVaGC cell line SNU-4th through long-term treatment of EBVaGC cell line SNU719 with 5-Fluorouraci in vivo passage, then we compared circRNAs expression between the fourth passage xenografts treated with 5-Fu and PBS by RNA-sequencing SOURCE: li,ping,gong (chjning@mail.sysu.edu.cn) - The Third Affiliated Hospital, Sun Yat-sen University
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