Effect of autophagy inhibitor chloroquine on the proliferation of PASMCs induced by hypoxia / 中国应用生理学杂志
Chinese Journal of Applied Physiology
;
(6): 8-12, 2014.
Article
in Chinese
| WPRIM
| ID: wpr-235309
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the role of autophagy inhibitor chloroquine (CQ) in the proliferation of pulmonary arterial smooth muscle cells (PASMCs) in hypoxia conditions.</p><p><b>METHODS</b>The following groups in this study were set up control group, hypoxia group, 50 micromol/L CQ + hypoxia group, 50 micromol/L CQ group. The viability of PASMCs in every group was detected by MTT assay. Autophagic vacuoles in the cells were observed by MDC staining. Protein expression of microtubule associated protein light chain 3 (LC3) was measured by Western blot. Migration of PASMCs was detected by wound healing assay.</p><p><b>RESULTS</b>Compared with control group, no effect on the viability of PASMCs was observed treated by CQ alone. In 1% hypoxia group, cell viability increased significantly compared with that in control group. The number of autophagic vacuoles and the rate of cell migration and also protein expression of LC3-II were also markedly increased. Compared with hypoxia group, addition of CQ increased the number of autophagic vacuoles and the levels of LC3-II protein, but decreased the proliferation and migration of PASMCs.</p><p><b>CONCLUSION</b>Hypoxia could activates autophagy and contributes to proliferation and migration of PASMCs, and autophagy inhibitor CQ could decrease the effect of hypoxia on PASMCs through inhibiting autophagy process.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Pulmonary Artery
/
Autophagy
/
Cell Hypoxia
/
Cell Movement
/
Cell Survival
/
Cells, Cultured
/
Chloroquine
/
Cell Biology
/
Myocytes, Smooth Muscle
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Applied Physiology
Year:
2014
Type:
Article
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