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- 저자 : youwen Sun (검색결과 2 건)
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youwen Sun,Baonian Wan,Biao Shen,Bojiang Ding,Haiqing Liu,Jinping Qian,Liqun Hu,Zhongyong Chen 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The stability of the m/n = 1/1 mode (named “mid-oscillation”) during the ramp phase of the sawtooth oscillations in different current profiles has been investigated in a recent experiment. Modification of the local current density profile in the central region was obtained by changing the spectrum of the parallel refractive index Nk of the lower hybrid wave (LHW) with other parameters fixed. This shows that the amplitude and the growth rate of the mid-oscillation decrease with increasing peak value of the parallel refractive index Npeak k and the mode disappears during most of the sawtooth rampphases when Npeak k 3.15. This result directly demonstrates that the mode is mainly destabilized by the local current density gradient
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LncRNA expression profile analysis of Mg2+-induced osteogenesis by RNA-seq and bioinformatics
Tang Wen,Liu Qing,Tan Wei,Sun Tianshi,Deng Youwen 한국유전학회 2021 Genes & Genomics Vol.43 No.11
Background In recent years, magnesium (Mg) has been extensively studied for manufacturing biodegradable orthopedic devices. Besides other advantages, researches have shown that magnesium-based implants can stimulate osteogenesis thus accelerating orthopedic trauma recovery, but its molecular mechanism is not fully understood. Meanwhile, long non-coding RNA (lncRNA) has been found to play vital role in regulating osteogenic diferentiation. Objective To explore the role of lncRNA in Mg2+ (magnesium ions)-induced osteogenesis. Methods The efect of Mg2+ on mBMSCs proliferation was detected by the CCK-8 assay. The optimum concentration of Mg2+ (7.5 mM) in promoting mBMSCs osteogenesis was determined by ALP staining and Alizarin red staining, western blot and RT-qPCR were performed to detect osteogenic markers expressions. The lncRNAs and mRNAs expression profles of mBMSCs were assessed by RNA-Seq and processed by bioinformatics analysis. The selected lncRNAs expression level was validated by RT-qPCR. Results The efect of Mg2+ in promoting osteogenesis was confrmed and the optimum concentration was determined as 7.5 mM. The lncRNAs and mRNAs diferentially expressed between 7.5 mM Mg2+-treated group and control group was detected and functional analysis revealed that their function were associated with osteogenesis. The ceRNA networks were constructed for H19 and Dubr that aberrantly expressed in two groups. The ceRNA networks of selected lncRNAs (H19 and Dubr) were constructed. Conclusions This study identifed H19 and Dubr as osteogenic associated lncRNAs involved in Mg2+-induced osteogenesis, and they might play their roles through lncRNA-miRNA–mRNA axis.
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