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mRNA-miRNA Reciprocal Regulation Enabled Bistable Switch Directs Cell Fate Decision

miRNAs serve as crucial post-transcriptional regulators in various essential cell fate decision. However, the contribution of the mRNA-miRNA mutual regulation to bistability is not fully understood. Here, we built a set of mathematical models of mRNA-miRNA interactions and systematically analyzed the sensitivity of response curves under various conditions. First, we found that mRNA-miRNA reciprocal regulation could manifest ultrasensitivity to subserve the generation of bistability when equipped with a positive feedback loop. Second, the region of bistability is expanded by a stronger competing mRNA (ceRNA). Interesting, bistability can be emerged without feedback loop if multiple miRNA binding sites exist on a target mRNA. Thus, we demonstrated the importance of simple mRNA-miRNA reciprocal regulation in cell fate decision.

preprint2016arXivOpen access
Xiao-Jun TianHang ZhangJingyu ZhangJianhua Xing
Molecular Networks
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Open access4 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
Citations: 0Reviews: 0Saves: 0Code: not linkedDataset: not linkedInstitutions: 0

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Xiao-Jun TianHang ZhangJingyu ZhangJianhua Xing

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