Rewired glycosylation activity promotes scarless regeneration and functional recovery in spiny mice after complete spinal cord transection

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Nogueira Rodrigues, J (Author) Other; Leite, SC (Author) Other; Pinto Costa, R (Author) Other; Sousa, SC (Author) Other; Luz, LL (Author) Other; Sintra, MA (Author) Other; Oliveira, R (Author) Other; Monteiro, AC (Author) Other; Pinheiro, GG (Author) Other; Vitorino, M (Author) Other; João Silva (Author) FMUP; Simao, S (Author) Other; Fernandes, VE (Author) Other; Provaznik, J (Author) Other; Benes, V (Author) Other; Cruz C.D. (Author) FMUP; Safronov, BV (Author) Other; Magalhaes, A (Author) Other; Reis, CA (Author) Other; Vieira, J (Author) ICBAS; Cristina Vieira (Author) FCUP; Tiscornia, G (Author) Other; Araujo, IM (Author) Other; Monica M Sousa (Author) FMUP

Journal

Title: Developmental Cell

Vol. 57

Pages: 440-+

ISSN: 1534-5807

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 24 Citations

Scopus - 24 Citations

Other information

Authenticus ID: P-00W-6E4

DOI: 10.1016/j.devcel.2021.12.008

Abstract (EN): Regeneration of adult mammalian central nervous system (CNS) axons is abortive, resulting in inability to recover function after CNS lesion, including spinal cord injury (SCI). Here, we show that the spiny mouse (Acomys) is an exception to other mammals, being capable of spontaneous and fast restoration of function after severe SCI, re-establishing hind limb coordination. Remarkably, Acomys assembles a scarless pro-regenerative tissue at the injury site, providing a unique structural continuity of the initial spinal cord geometry. The Acomys SCI site shows robust axon regeneration of multiple tracts, synapse formation, and electrophysiological signal propagation. Transcriptomic analysis of the spinal cord following transcriptome reconstruction revealed that Acomys rewires glycosylation biosynthetic pathways, culminating in a specific pro-regenerative proteoglycan signature at SCI site. Our work uncovers that a glycosylation switch is critical for axon regeneration after SCI and identifies beta 3gnt7, a crucial enzyme of keratan sulfate biosynthesis, as an enhancer of axon growth.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19