PMID- 24077878 OWN - NLM STAT- MEDLINE DCOM- 20140928 LR - 20211021 IS - 1573-6830 (Electronic) IS - 0272-4340 (Linking) VI - 34 IP - 1 DP - 2014 Jan TI - The expression changes of vacuolar protein sorting 4B (VPS4B) following middle cerebral artery occlusion (MCAO) in adult rats brain hippocampus. PG - 83-94 AB - Vacuolar protein sorting 4 (VPS4), is a member of ATPases associated with diverse cellular activities protein family. VPS4 is composed of VPS4A and VPS4B, VPS4B plays an important role in the lysosomal degradation pathway, intracellular protein trafficking, virus budding and abscission of cytokinesis. However, information regarding its distribution and possible function in the central nervous system is limited. Therefore, we performed a middle cerebral artery occlusion (MCAO) in adult rats and detected the dynamic changes of VPS4B in hippocampus CA1 subregion. We found that the VPS4B expression was increased strongly after MCAO and reached the peak after 3 days. VPS4B mainly located in the cytoplasm of neurons, but not astrocytes and microglia. Moreover, there was a concomitant up-regulation of active caspase-3. In vitro studies indicated that the up-regulation of VPS4B may be involved in oxygen-glucose deprivation-induced PC12 cell death. And knock-down of VPS4B in cultured differentiated PC12 cells by siRNA showed that VPS4B promoted the expression of active caspase-3. Collectively, all these results and MTT assay suggested that the up-regulation of VPS4B played an important role in the pathophysiology after MCAO, and further research is needed to have a good understanding of its function and mechanism. FAU - Cui, Gang AU - Cui G FAU - Wang, Yunfeng AU - Wang Y FAU - Yu, Shanshan AU - Yu S FAU - Yang, Lixiang AU - Yang L FAU - Li, Bing AU - Li B FAU - Wang, Wei AU - Wang W FAU - Zhou, Peng AU - Zhou P FAU - Wu, Jiang AU - Wu J FAU - Lu, Ting AU - Lu T FAU - Chen, Dongjian AU - Chen D LA - eng PT - Journal Article PL - United States TA - Cell Mol Neurobiol JT - Cellular and molecular neurobiology JID - 8200709 RN - 0 (Biomarkers) RN - 0 (Vesicular Transport Proteins) RN - EC 3.4.22.- (Caspase 3) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Aging/*metabolism MH - Animals MH - Apoptosis MH - Biomarkers/metabolism MH - Blotting, Western MH - CA1 Region, Hippocampal/enzymology/pathology MH - Caspase 3/metabolism MH - Cell Survival MH - Gene Knockdown Techniques MH - Glucose/deficiency MH - Hippocampus/*metabolism/*pathology MH - Hypoxia/metabolism/pathology MH - Immunohistochemistry MH - Infarction, Middle Cerebral Artery/*metabolism/pathology MH - Male MH - Neurons/metabolism/pathology MH - PC12 Cells MH - Rats MH - Rats, Sprague-Dawley MH - Up-Regulation MH - Vesicular Transport Proteins/*metabolism EDAT- 2013/10/01 06:00 MHDA- 2014/10/01 06:00 CRDT- 2013/10/01 06:00 PHST- 2013/07/14 00:00 [received] PHST- 2013/09/17 00:00 [accepted] PHST- 2013/10/01 06:00 [entrez] PHST- 2013/10/01 06:00 [pubmed] PHST- 2014/10/01 06:00 [medline] AID - 10.1007/s10571-013-9989-5 [doi] PST - ppublish SO - Cell Mol Neurobiol. 2014 Jan;34(1):83-94. doi: 10.1007/s10571-013-9989-5.