PMID- 23737133 OWN - NLM STAT- MEDLINE DCOM- 20140212 LR - 20211021 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 381 IP - 1-2 DP - 2013 Sep TI - Vacuolar protein sorting 4B, an ATPase protein positively regulates the progression of NSCLC via promoting cell division. PG - 163-71 LID - 10.1007/s11010-013-1699-2 [doi] AB - Vacuolar protein sorting 4B (VPS4B), a member of ATPase family proteins, plays a crucial role in lysosome-dependent degradation. Recently, it was found that VPS4B could negatively regulate breast cancer progression through promoting lysosomal-dependent degradation for EGFR. Nevertheless, other studies found that VPS4B was also essential for cell division and mitosis through insuring the maintenance of centrosome and spindle assembly. Thus, the role of VPS4B in cancer biology remains under debate. In this study, we analyzed the clinical significance of VPS4B in NSCLC. The expression of VPS4B was evaluated by Western blot in 8 paired fresh NSCLC tissues and immunohistochemistry on 105 paraffin-embedded slices. VPS4B was highly expressed in NSCLC and significantly associated with NSCLCs tumor size, histological differentiation, clinical stage and Ki-67. Besides, high VPS4B expression was an independent prognostic factor for NSCLC patients' poor survival. To determine whether VPS4B could regulate the proliferation of NSCLC cells, we knocked down the expression of VPS4B and analyzed the proliferation of A549 NSCLC cells using Western blot, CCK8 and flow cytometry assays, which together indicated that loss of VPS4B could inhibit cell cycle progress. These data suggest that VPS4B may promote the progression of NSCLC and be a biotarget for NSCLCs therapy. FAU - Liu, Yifei AU - Liu Y AD - Department of Pathology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China. FAU - Lv, Liting AU - Lv L FAU - Xue, Qun AU - Xue Q FAU - Wan, Chunhua AU - Wan C FAU - Ni, Tingting AU - Ni T FAU - Chen, Buyou AU - Chen B FAU - Liu, Yanhua AU - Liu Y FAU - Zhou, Yiqun AU - Zhou Y FAU - Ni, Runzhou AU - Ni R FAU - Mao, Guoxin AU - Mao G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130605 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (Endosomal Sorting Complexes Required for Transport) RN - 0 (Ki-67 Antigen) RN - EC 3.6.1.- (Adenosine Triphosphatases) RN - EC 3.6.4.- (ATPases Associated with Diverse Cellular Activities) RN - EC 3.6.4.6 (VPS4B protein, human) SB - IM MH - ATPases Associated with Diverse Cellular Activities MH - Adenosine Triphosphatases/*metabolism MH - Adult MH - Aged MH - Carcinoma, Non-Small-Cell Lung/*enzymology/*pathology MH - Cell Cycle MH - *Cell Division MH - Cell Line, Tumor MH - Cell Proliferation MH - *Disease Progression MH - Endosomal Sorting Complexes Required for Transport/*metabolism MH - Female MH - Gene Knockdown Techniques MH - Humans MH - Immunohistochemistry MH - Ki-67 Antigen/metabolism MH - Lung Neoplasms/*enzymology/*pathology MH - Male MH - Middle Aged MH - Proportional Hazards Models MH - Survival Analysis EDAT- 2013/06/06 06:00 MHDA- 2014/02/13 06:00 CRDT- 2013/06/06 06:00 PHST- 2013/04/17 00:00 [received] PHST- 2013/05/23 00:00 [accepted] PHST- 2013/06/06 06:00 [entrez] PHST- 2013/06/06 06:00 [pubmed] PHST- 2014/02/13 06:00 [medline] AID - 10.1007/s11010-013-1699-2 [doi] PST - ppublish SO - Mol Cell Biochem. 2013 Sep;381(1-2):163-71. doi: 10.1007/s11010-013-1699-2. Epub 2013 Jun 5.