Abstract
Bone morphogenetic proteins (BMPs) are cytokines from the TGF-β superfamily, with important roles during embryonic development and in the induction of bone and cartilage tissue differentiation in the adult body. In this contribution, We report here the application of small ubiquitin-related modifier (SUMO) fusion technology to the expression and purification of human BMP-14. The fusion protein expressed in a soluble form was purified to a purity of 90% by Ni-IDA chromatography. After the SUMO-BMP14 fusion protein was cleaved by the SUMO protease at 30 °C for 1 h, the cleaved sample was re-applied to a Ni-IDA. Finally, about 45 mg recombinant hBMP-14 was obtained from 1 litre bacterial culture with no less than 95% purity. The purified hBMP-14 dimer was over 90% purity and could induce the expression of alkaline phosphatase activity in C2C12 cells in a dose-dependent manner. Thus the SUMO-mediated peptide expression and purification system potentially could be employed for the production of other homodimeric proteins.
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Abbreviations
- hBMP-14:
-
Human bone morphogenetic protein-14
- SUMO:
-
Small ubiquitin-related modifier
- IPTG:
-
Isopropyl-β-d-1-thiogalactopyranoside
- ALP:
-
Alkaline phosphatase activity
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Acknowledgments
Published data referred to in this manuscript were supported by a grant of the National Natural Science Foundation of China (Grant No. 30900743) and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Li, J.F., Cui, X.W., Ji, H.Y. et al. High Efficient Expression of Bioactive Human BMP-14 in E. coli Using SUMO Fusion Partner. Protein J 30, 592–597 (2011). https://doi.org/10.1007/s10930-011-9368-3
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DOI: https://doi.org/10.1007/s10930-011-9368-3