4-67 miR-300 Modulates the Cellular Radiosensitivity Through Targeting p^53 in Human Non-small Cell Lung Cancer A549 Cells

摘要

microRNAs(miRNAs)perform crucial roles in mediation of the cellular radiosensitivity by influencing DNA damage repair,cell cycle checkpoint,apoptosis,radio-related signal transduction pathway and microenvironment[1-3].Our previous study have suggested that miR??300,whose expression is correlated positively with the cellular resistance to chemotherapy drug cis-platin in human ovarian cancer cells[4],is involved in the cellular response to the DNA damages induced by ionizing radiation[5].However,the underlying molecular mechanisms remain unclear.