作者: YONG GUO , YANG WANG , YINQIN LIU , YONGMING LIU , QIANGCHENG ZENG
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摘要: MicroRNA (miRNA) is an important regulator of cell differentiation and function. Mechanical strain in the growth osteoblasts. Therefore, mechanresponsive miRNA may be response osteoblasts to mechanical strain. The purpose present study was select identify mechanoresponsive miRNAs Mouse osteoblastic MC3T3-E1 cells were cultured culture dishes stimulated with a tensile 2,50 μe at 0.5 Hz, activity alkaline phosphatase (ALP), mRNA levels ALP, osteocalcin (OCN), collagen type I (Col I), protein bone morphogenetic proteins (BMPs) medium assayed. Following microarray reverse transcription-quantitative polymerase chain reaction analyses, differentially expressed mechanically strained unstrained selected identified. Using bioinformatics analysis, target genes then predicted. results revealed that 2,500 increased OCN Col I, protein(BMP)-2 BMP-4 Continuous stimulation for 8 h had most marked stimulant effects. miR-218, miR-191*, miR-3070a miR-33 identified as cells. Certain these four involved differentiation. These findings indicated μe, particularly period h, promoted differentiation, potential their