Thrombospondin-1 modified bone marrow mesenchymal stem cells (BMSCs) promote neurite outgrowth and functional recovery in rats with spinal cord injury

Yujie Pu; Ke Meng; Chuanlong Gu; Linlin Wang; Xiaoming Zhang

doi:10.18632/oncotarget.22018

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Research Papers:

Thrombospondin-1 modified bone marrow mesenchymal stem cells (BMSCs) promote neurite outgrowth and functional recovery in rats with spinal cord injury

Yujie Pu, Ke Meng, Chuanlong Gu, Linlin Wang _ and Xiaoming Zhang

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Oncotarget. 2017; 8:96276-96289. https://doi.org/10.18632/oncotarget.22018

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Abstract

Yujie Pu1, Ke Meng1, Chuanlong Gu1, Linlin Wang1 and Xiaoming Zhang1

1Department of Basic Medicine Sciences, School of Medicine, Zhejiang University, Hangzhou 310058, China

Correspondence to:

Linlin Wang, email: [email protected]

Xiaoming Zhang, email: [email protected]

Keywords: spinal cord injury; bone marrow mesenchymal stem cells (BMSCs); thrombospondin-1 (TSP-1); neurite outgrowth; functional recovery

Received: July 25, 2017 Accepted: September 23, 2017 Published: October 24, 2017

ABSTRACT

Stem cell therapies are currently gaining momentum in the treatment of spinal cord injury (SCI). However, unsatisfied intrinsic neurite growth capacity constitutes significant obstacles for injured spinal cord repair and ultimately results in neurological dysfunction. The present study assessed the efficacy of thrombospondin-1 (TSP-1), a neurite outgrowth-promoting molecule, modified bone marrow mesenchymal stem cells (BMSCs) on promoting neurite outgrowth in vitro and in vivo of Oxygen–Glucose Deprivation (OGD) treated motor neurons and SCI rat models. The present results demonstrated that the treatment of BMSCs+TSP-1 could promote the neurite length, neuronal survival, and functional recovery after SCI. Additionally, TSP-1 could activate transforming growth factor-β1 (TGF-β1) then induced the smad2 phosphorylation, and expedited the expression of GAP-43 to promote neurite outgrowth. The present study for the first time demonstrated that BMSCs+TSP-1 could promote neurite outgrowth and functional recovery after SCI partly through the TGF-β1/p-Samd2 pathway. The study provided a novel encouraging evidence for the potential treatment of BMSCs modification with TSP-1 in patients with SCI.

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PII: 22018

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Research Papers:

Thrombospondin-1 modified bone marrow mesenchymal stem cells (BMSCs) promote neurite outgrowth and functional recovery in rats with spinal cord injury

Abstract