Abstract：
:Adult neural progenitor cells (NPCs) induce post-ischemic long-term neuroprotection and brain remodeling by releasing of survival- and plasticity-promoting mediators. To evaluate whether secreted factors may mimic neuroprotective and restorative effects of NPCs, we exposed male C57BL6 mice to focal cerebral ischemia and intravenously applied conditioned medium (CM) derived from subventricular zone NPCs. CM dose-dependently reduced infarct volume and brain leukocyte infiltration after 48 h when delivered up to 12 h after focal cerebral ischemia. Neuroprotection persisted in the post-acute stroke phase yielding enhanced neurological recovery that lasted throughout the 28-day observation period. Increased Bcl-2, phosphorylated Akt and phosphorylated STAT-3 abundance, and reduced caspase-3 activity and Bax abundance were noted in ischemic brains of CM-treated mice at 48 h post-stroke, indicative of enhanced cell survival signaling. Long-term neuroprotection was associated with increased brain glial cell line-derived neurotrophic factor (GDNF) and vascular endothelial growth factor (VEGF) concentrations at 28 days resulting in increased neurogenesis and angiogenesis. The observation that NPC-derived CM induces sustained neuroprotection and neurological recovery suggests that cell transplantation may be dispensable when secreted factors are instead administered.
journal_name
Mol Neurobioljournal_title
Molecular neurobiologyauthors
Doeppner TR,Traut V,Heidenreich A,Kaltwasser B,Bosche B,Bähr M,Hermann DMdoi
10.1007/s12035-016-9748-ysubject
Has Abstractpub_date
2017-03-01 00:00:00pages
1531-1540issue
2eissn
0893-7648issn
1559-1182pii
10.1007/s12035-016-9748-yjournal_volume
54pub_type
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