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Creation and characterization of an immortalized canine myoblast cell line: Myok9

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Abstract

The availability of an in vitro canine cell line would reduce the need for dogs for primary in vitro cell culture and reduce overall cost in pre-clinical studies. An immortalized canine muscle cell line, named Myok9, from primary myoblasts of a normal dog has been developed by the authors. Immortalization was performed by SV40 viral transfection of the large T antigen into the primary muscle cells. Proliferation assays, growth curves, quantitative PCR, western blotting, mass spectrometry, and light microscopy were performed to characterize the MyoK9 cell line at different stages of growth and differentiation. The expression of muscle-related genes was determined to assess myogenic origin. Myok9 cells expressed dystrophin and other muscle-specific proteins during differentiation, as detected with mass spectrometry and western blotting. Using the Myok9 cell line, new therapies before moving to pre-clinical studies to enhance the number and speed of analyses and reduce the cost of early experimentation can be tested now. This cell line will be made available to the research community to further evaluate potential therapeutics.

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Data availability

All data generated for the LC–MS/MS can be available upon request.

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Acknowledgements

The authors acknowledge Solid Biosciences for providing the funding for this project and for SML’s salary. The Olympus FV1000 confocal microscope acquisition was supported by the Office of the Vice President of Research at Texas A&M University. Finally, they acknowledge Creative Bioarray for immortalizing the cell line.

Funding

This project was funded by Solid Biosciences Inc.

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Authors and Affiliations

Authors

Contributions

SML developed the experimental design, data collection, analysis, and manuscript writing. CBA was involved in data analysis, supervision, and experimental design. EC was in charge of mass spectrometry data analysis and acquisition. YH was involved in mass spectrometry data analysis and supervision. KJB was involved in supervision and experimental design. SV was in charge of imaging acquisition. AB was in charge of dog care and colony supervision. JNK was involved in supervision and data interpretation. PPN was involved in experimental design, manuscript writing, data analysis, and supervision. All the authors were involved in manuscript editing.

Corresponding author

Correspondence to Peter P. Nghiem.

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Conflict of interest

SML’s salary was funded by Solid Biosciences. KJB and JB is an employee of Solid Biosciences. JNK is a paid consultant for Solid Biosciences. PPN is a paid consultant for AGADA Biosciences. The rest of the authors declare no competing interests.

Ethical approval

The dogs were used and cared for according to principles outlined in the National Research Council’s Guide for the Care and Use of Laboratory Animals. Procedures were approved by the Texas A&M IACUC through protocols 2018–0182 (Standard Operating Procedures-Canine X-Linked Muscular Dystrophy) and 2017–0147 (Studies of Murine Models for Human Disease and Treatment).

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López, S.M., Balog-Alvarez, C., Canessa, E.H. et al. Creation and characterization of an immortalized canine myoblast cell line: Myok9. Mamm Genome 31, 95–109 (2020). https://doi.org/10.1007/s00335-020-09833-5

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  • DOI: https://doi.org/10.1007/s00335-020-09833-5

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