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Auto-regulatory feedback by RNA-binding proteins

Journal of Molecular Cell Biology 2019年第10期11卷 930-939页

作者： michaela muller-mcnicoll Oliver Rossbach Jingyi Hui Jan Medenbach Institute of Cell Biology and Neuroscience Goethe University FrankfurtMax-von-Laue-Strasse 13D-60438 Frankfurt am MainGermany Institute of Biochemistry Justus-Liebig-University GiessenHeinrich-Buff-Ring 17D-35392 GiessenGermany State Key Laboratory of Molecular Biology CAS Center for Excellence in Molecular Cell ScienceShanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesShanghai 200031China Institute of Biochemistry I University of RegensburgUniversitaetsstrasse 31D-93053 RegensburgGermany

RNA-binding proteins(RBPs)are key regulators in post-transcriptional control of gene *** that alter their activity or abundance have been implicated in numerous diseases such as neurodegenerative disorders and various types of *** highlights the importance of RBP proteostasis and the necessity to tightly control the expression levels and activities of *** many cases,RBPs engage in an auto-regulatory feedback by directly binding to and influencing the fate oftheirown mRNAs,exerting control over their own *** this feedback control,RBPs employ a variety of mechanisms operating at all levels of posttranscriptional regulation of gene *** we review RBP-mediated autogenous feedback regulation that either serves to maintain protein abundance within a physiological range(by negative feedback)or generates binary,genetic on/off switches important for *** fate decisions(by positive feedback).

关键词： autogenous regulation protein homeostasis RNA-binding proteins post-transcriptional regulation of gene expressi on

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A combined computational pipeline to detect circular RNAs in human cancer cells under hypoxic stress

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Journal of Molecular Cell Biology 2019年第10期11卷 829-844页

作者： Antonella Di Liddo Camila de Oliveira Freitas Machado Sandra Fischer Stefanie Ebersberger Andreas WHeumliller Julia EWeigand michaela muller-mcnicoll Kathi Zarnack Buchmann Institute for Molecular Life Sciences Goethe University FrankfurtFrankfurt am MainGermany Institute of Cell Biology and Neuroscience Goethe University FrankfurtFrankfurt am MainGermany Institute for Cardiovascular Regeneration Goethe University FrankfurtFrankfurt am MainGermany Department of Biology Technical University DarmstadtGermany Institute of Molecular Biology(IMB) MainzGermany

Hypoxia is associated with several diseases,including *** that are deprived of adequate oxygen supply trigger tran-scriptional and post-transcriptional responses,which control cellular pathways such as angiogenesis,proliferation,and metabolic *** RNAs(circRNAs)are a novel class of mainly non-coding RNAs,which have been implicated in multiple cancers and attract increasing attention as potential ***,we characterize the circRNA signatures of three different cancer cell lines from cervical(HeLa),breast(MCF-7),and lung(A549)cancer under *** order to reliably detect circRNAs,we integrate available tools with custom approaches for quantification and statistical analysis?Using this consolidated computational pipeline,we identify?12000 circRNAs in the three cancer *** molecular characteristics point to an involvement of complementary RNA sequences as well as trans-acting factors in circRNA biogenesis,such as the RNA-binding protein HNRNPC-Notably,we detect a number of circRNAs that are more abundant than their linear *** addition,64 circRNAs significantly change in abundance upon hypoxia,in most cases in a cell type-specific *** summary,we present a comparative circRNA profiling in human cancer cell lines,which promises novel insights into the biogenesis and function of circRNAs under hypoxic stress.

关键词： circular RNA computational pipeline differential expression cancer cells hypoxia RNA-Seq

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