Stable transfection into rat bone marrow mesenchymal stem cells by lentivirus‑mediated NT‑3

Gong,Yu; Wang,Hongfei; Xia,Haijun

doi:10.3892/mmr.2014.2727

Stable transfection into rat bone marrow mesenchymal stem cells by lentivirus‑mediated NT‑3

Authors:
- Yu Gong
- Hongfei Wang
- Haijun Xia
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Affiliations: Department of Bone Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116021, P.R. China
Published online on: October 21, 2014 https://doi.org/10.3892/mmr.2014.2727
Pages: 367-373

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Abstract

Transplantation of bone marrow mesenchymal stem cells (BMSCs) is the most promising therapeutic strategy in the treatment of spinal cord injuries. BMSCs have a wide variety of sources and are characterized by being exempt from immune rejection, marked secretory functions and neuronal plasticity during differentiation. The lentiviral vector, namely PLV.Ex3d.P/neo‑EF1A‑NT3‑internal ribosome entry site‑enhanced green fluorescent protein, was constructed and subsequently transfected into Sprague Dawley (SD) rat BMSCs. The gene and protein expression levels of the nucleic acid neurotrophin-3 (NT‑3) were then detected. The results demonstrated that the constructed NT‑3 gene lentiviral expression vector matched the expected design and that the NT‑3 gene was transfected into the BMSCs via the lentivirus‑mediated method at a transfection efficiency of 60‑70%. NT‑3 gene expression was detected within the stably transfected positive cells at the nucleic acid and protein levels. The cell morphology and biological activity of BMSCs did not alter significantly following transfection with NT‑3. NT‑3‑transfected SD BMSCs were successfully constructed and served as effective vector seed cells with stable expression. These results can be used as a reference for subsequent studies on the transplantation therapy of rat spinal cord injuries using lentivirus‑mediated NT‑3‑transfected SD BMSCs.

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