It has been reported that long non-coding RNA lincRNA-p21 is induced upon radiation and chemotherapy. This induction contributes to DNA-damage repair, cell death and cell cycle regulation. In this study, we focused on Taxotere (TXT) mediated chemotherapy of breast cancer cells and found that lincRNA-p21 is robotically induced upon TXT treatment. Secondly, we observed increased chemoresistance in three different breast cancer cell lines with lincRNA-p21 knockdown. Mechanistically, we found that lincRNA-p21 knockdown lead to decreased cell death during chemotherapy comparing to the negative control. In addition, our work showed that p21 is a downstream target of lincRNA-p21 in human breast cancer cells, and the loss of lincRNA-p21 caused p21 downregulation at both the RNA and protein levels.
The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.