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Lin28 Signaling Supports Mammalian PNS and CNS Axon Regeneration

Year: 2018
Type: article
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).
Source: Cell Reports
DOI: 10.1016/j.celrep.2018.07.105
Authors: Xue-Wei Wang, Qiao Li, Chang-Mei Liu, Philip A. Hall, Jing-Jing Jiang, Christopher D. Katchis, Sehwa Kang, Bryan C. Dong, Shuxin Li, Feng-Quan Zhou
Institutions: Johns Hopkins University, Johns Hopkins Medicine, Chinese Academy of Sciences, Institute of Zoology, Shriners Hospitals for Children - Philadelphia, Temple University, Johns Hopkins Hospital
Language: English
Open Access status: gold
Estimated APC paid: $5,620
Awards: G1003744036, Reprogramming Retinal Ganglion Cells for Axon Regeneration, G2035370345, G2644624377, G2930015533, G3950251737, G4334248060, G4427734736, G7354904460, G9000061588, G9000184929, G9000237368, G9000250503, G9000288171, G9000306823
OpenAlex ID: W2891938650
FWCI: 5.089
Cites: 58
Cited by: 124
Related to: 10