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2015 ; 1619
(ä): 91-103
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Therapeutically targeting astrocytes with stem and progenitor cell
transplantation following traumatic spinal cord injury
#MMPMID25251595
Falnikar A
; Li K
; Lepore AC
Brain Res
2015[Sep]; 1619
(ä): 91-103
PMID25251595
show ga
Replacement of lost and/or dysfunctional astrocytes via multipotent neural stem
cell (NSC) and lineage-restricted neural progenitor cell (NPC) transplantation is
a promising therapeutic approach for traumatic spinal cord injury (SCI). Cell
transplantation in general offers the potential to replace central nervous system
(CNS) cell types, achieve remyelination, deliver missing gene products, promote
and guide axonal growth, modulate the host immune response, deliver
neuroprotective factors, and provide a cellular substrate for bridging the lesion
site, amongst other possible benefits. A host of cell types that differ in their
developmental stage, CNS region and species of derivation, as well as in their
phenotypic potential, have been tested in a variety of SCI animal models.
Historically in the SCI field, most pre-clinical NSC and NPC transplantation
studies have focused on neuronal and oligodendrocyte replacement. However, much
less attention has been geared towards targeting astroglial dysfunction in the
inured spinal cord, despite the integral roles played by astrocytes in both
normal CNS function and in the diseased nervous system. Despite the relative lack
of studies, cell transplantation-based targeting of astrocytes dates back to some
of the earliest transplant studies in SCI animal models. In this review, we will
describe the history of work involving cell transplantation for targeting
astrocytes in models of SCI. We will also touch on the current state of affairs
in the field, as well as on important future directions as we move forward in
trying to develop this approach into a viable strategy for SCI patients.
Practical issues such as timing of delivery, route of transplantation and
immunesuppression needs are beyond the scope of this review. This article is part
of a Special Issue entitled SI: Spinal cord injury.