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Lin28 Signaling Supports Mammalian PNS and CNS Axon Regeneration
Wang, Xue-Wei Li, Qiao Liu, Chang-Mei Hall, Philip A. Jiang, Jing-Jing Katchis, Christopher D. Kang, Sehwa Dong, Bryan C. Li, Shuxin Zhou, Feng-Quan
Wang, Xue-Wei
Li, Qiao
Liu, Chang-Mei
Hall, Philip A.
Jiang, Jing-Jing
Katchis, Christopher D.
Kang, Sehwa
Dong, Bryan C.
Li, Shuxin
Zhou, Feng-Quan
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Journal article
Date
2018-09-04
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Anatomy and Cell Biology
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https://doi.org/10.1016/j.celrep.2018.07.105
Abstract
RNA-binding proteins Lin28a/b regulate cellular growth and tissue regeneration. Here, we investigated the role of Lin28 in the control of axon regeneration in postmitotic neurons. We find that Lin28a/b are both necessary and sufficient for supporting axon regeneration in mature sensory neurons through their regulatory partners, let-7 microRNAs (miRNAs). More importantly, overexpression of Lin28a in mature retinal ganglion cells (RGCs) produces robust and sustained optic nerve regeneration. Additionally, combined overexpression of Lin28a and downregulation of Pten in RGCs act additively to promote optic nerve regeneration, potentially by reducing the backward turning of regenerating RGC axons. Our findings not only reveal a vital role of Lin28 signaling in regulating mammalian axon regeneration but also identify a signaling pathway that can promote axon regeneration in the central nervous system (CNS).
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Cell Press
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Cell Reports, Vol. 24, Iss. 10
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