Satellite Glia of the Adult Dorsal Root Ganglia Harbor Stem Cells That Yield Glia Under Physiological Conditions and Neurons in Response to Injury
Overview
Authors
Affiliations
The presence of putative stem/progenitor cells has been suggested in adult peripheral nervous system (PNS) tissue, including the dorsal root ganglion (DRG). To date, their identification and fate in pathophysiological conditions have not been addressed. Combining multiple in vitro and in vivo approaches, we identified the presence of stem cells in the adult DRG satellite glial population, and progenitors were present in the DRGs and sciatic nerve. Cell-specific transgenic mouse lines highlighted the proliferative potential of DRG stem cells and progenitors in vitro. DRG stem cells had gliogenic and neurogenic potentials, whereas progenitors were essentially gliogenic. Lineage tracing showed that, under physiological conditions, adult DRG stem cells maintained DRG homeostasis by supplying satellite glia. Under pathological conditions, adult DRG stem cells replaced DRG neurons lost to injury in addition of renewing the satellite glial pool. These novel findings open new avenues for development of therapeutic strategies targeting DRG stem cells for PNS disorders.
Brown R, Barber H, Kucenas S Glia. 2024; 72(10):1766-1784.
PMID: 39141572 PMC: 11325082. DOI: 10.1002/glia.24581.
Promoting Alzheimer's disease research and therapy with stem cell technology.
Cao Z, Kong F, Ding J, Chen C, He F, Deng W Stem Cell Res Ther. 2024; 15(1):136.
PMID: 38715083 PMC: 11077895. DOI: 10.1186/s13287-024-03737-w.
CD163+ macrophages monitor enhanced permeability at the blood-dorsal root ganglion barrier.
Lund H, Hunt M, Kurtovic Z, Sandor K, Kagy P, Fereydouni N J Exp Med. 2023; 221(2).
PMID: 38117255 PMC: 10733632. DOI: 10.1084/jem.20230675.
Brandt J, Smith C PLoS Biol. 2023; 21(9):e3002319.
PMID: 37747915 PMC: 10564127. DOI: 10.1371/journal.pbio.3002319.
The dorsal root ganglion as a target for neurorestoration in neuropathic pain.
Estivill-Torrus G, Martinez-Padilla A, Sanchez-Salido L, Baron-Van Evercooren A, Garcia-Diaz B Neural Regen Res. 2023; 19(2):296-301.
PMID: 37488881 PMC: 10503598. DOI: 10.4103/1673-5374.374655.