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- W3136154348 abstract "Abstract Cytoplasmic lncRNAs have been found to directly interact with target mRNAs and regulate their stability. In this study, we aimed to study the molecular mechanism underlying the function of m 6 A as a central regulator in chemoresistance and CML proliferation. In this study, we established three mice groups (control group, ADR‐R group and ADR‐R + shLINC00470 group). We detected PTEN mRNA expression in the presence of LINC00470 in the mice models, as well as in the KCL22 and K562 cells. LINC00470 was significantly enriched for PTEN mRNA to exhibit a negative regulatory relationship between LINC00470 and PTEN mRNA. However, the alteration of LINC00470 had no effect on the luciferase activity of PTEN promoter, while the half‐life of PTEN mRNA was affected. It was further validated that LINC00470 down‐regulated PTEN expression by positively regulating the m6A modification of PTEN mRNA via RNA methyltransferase METTL3. Moreover, the relative expression of LC3II, Beclin‐1, ATG7 and ATG5 was all decreased in cells treated with LINC00470, and down‐regulated PTEN expression was observed in chemo‐resistant cells, while the expression of PTEN was rescued by the transfection of shMETTL3 into chemo‐resistant cells. Moreover, the knockdown of METTL3 also restored the normal level of PTEN m 6 A modification and LINC00470 expression in chemo‐resistant cells. In conclusion, our results demonstrated the molecular mechanism underlying the effect of LINC00470 on CML by reducing the PTEN stability via RNA methyltransferase METTL3, thus leading to the inhibition of cell autophagy while promoting chemoresistance in CML." @default.
- W3136154348 created "2021-03-29" @default.
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- W3136154348 date "2021-03-21" @default.
- W3136154348 modified "2023-09-25" @default.
- W3136154348 title "Dysregulation of LINC00470 and METTL3 promotes chemoresistance and suppresses autophagy of chronic myelocytic leukaemia cells" @default.
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- W3136154348 doi "https://doi.org/10.1111/jcmm.16478" @default.
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