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TGF-β1-induced LPP expression dependant on Rho kinase during differentiation and migration of bone marrow-derived smooth muscle progenitor cells

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Summary

Lipoma preferred partner (LPP) has been identified as a protein which is highly selective for smooth muscle progenitor cells (SMPCs) and regulates differentiation and migration of SMPCs, but mechanisms of LPP expression are not elucidated clearly. The aim of the present study was to discuss the mechanisms by which LPP expression is regulated in the differentiation and migration of SMPCs induced by TGF-β1. It was found that TGF-β1 could significantly increase the expression of LPP, smooth muscle α-actin, smooth muscle myosin heavy chain (SM-MHC), and smoothelin in SMPCs. Moreover, inactivation of Rho kinase (ROK) with ROK inhibitors significantly inhibited LPP mRNA expression in TGF-β1-treated SMPCs and mouse aortic smooth muscle cells (MAoSMCs). At the same time, LPP silencing with short interfering RNA significantly decreased SMPCs migration. In conclusion, LPP appears to be a ROK-dependant SMPCs differentiation marker that plays a role in regulating SMPCs migration.

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Authors and Affiliations

  1. Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China

    Zhiling Qu  (瞿智玲), Jun Yu  (余 俊) & Qiurong Ruan  (阮秋蓉)

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  1. Zhiling Qu  (瞿智玲)
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  2. Jun Yu  (余 俊)
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  3. Qiurong Ruan  (阮秋蓉)
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Corresponding author

Correspondence to Qiurong Ruan  (阮秋蓉).

Additional information

This project was supported by the National Natural Science Foundation of China (No. 30570725).

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Qu, Z., Yu, J. & Ruan, Q. TGF-β1-induced LPP expression dependant on Rho kinase during differentiation and migration of bone marrow-derived smooth muscle progenitor cells. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 32, 459–465 (2012). https://doi.org/10.1007/s11596-012-0080-0

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  • DOI: https://doi.org/10.1007/s11596-012-0080-0

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