Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
138-283 |
DRI_Background |
denotes |
Neural stem cell (NSC)-based therapies offer potential for neural repair in central nervous system (CNS) inflammatory and degenerative disorders. |
T2 |
284-474 |
DRI_Challenge |
denotes |
Typically, these conditions present with multifocal CNS lesions making it impractical to inject NSCs locally, thus mandating optimization of vascular delivery of the cells to involved sites. |
T3 |
475-623 |
DRI_Outcome |
denotes |
Here, we analyzed NSCs for expression of molecular effectors of cell migration and found that these cells are natively devoid of E-selectin ligands. |
T4 |
624-629 |
DRI_Approach |
denotes |
Using |
T5 |
680-870 |
DRI_Approach |
denotes |
(GPS), we glycan engineered the cell surface of NSCs ("GPS-NSCs") with resultant enforced expression of the potent E-selectin ligand HCELL (hematopoietic cell E-/L-selectin ligand) and of an |
T6 |
900-944 |
DRI_Approach |
denotes |
of neural cell adhesion molecule ("NCAM-E"). |
T7 |
974-1112 |
DRI_Background |
denotes |
injection, short-term homing studies demonstrated that, compared with buffer-treated (control) NSCs, GPS-NSCs showed greater neurotropism. |
T8 |
1113-1381 |
DRI_Background |
denotes |
Administration of GPS-NSC significantly attenuated the clinical course of experimental autoimmune encephalomyelitis (EAE), with markedly decreased inflammation and improved oligodendroglial and axonal integrity, but without evidence of long-term stem cell engraftment. |
T9 |
1382-1573 |
DRI_Background |
denotes |
Notably, this effect of NSC is not a universal property of adult stem cells, as administration of GPS-engineered mouse hematopoietic stem/progenitor cells did not improve EAE clinical course. |
T10 |
1574-1899 |
DRI_Background |
denotes |
These findings highlight the utility of cell surface glycan engineering to boost stem cell delivery in neuroinflammatory conditions and indicate that, despite the use of a neural tissue-specific progenitor cell population, neural repair in EAE results from endogenous repair and not from direct, NSC-derived cell replacement. |