Establishment and Characterization of Continuous Satellite Muscle Cells from Olive Flounder (Paralichthys olivaceus): Isolation, Culture Conditions, and Myogenic Protein Expression

Cells. 2023 Sep 21;12(18):2325. doi: 10.3390/cells12182325.

Abstract

Olive flounder (Paralichthys olivaceus) muscle satellite cells (OFMCs) were obtained by enzymatic primary cell isolation and the explant method. Enzymatic isolation yielded cells that reached 80% confluence within 8 days, compared to 15 days for the explant method. Optimal OFMC growth was observed in 20% fetal bovine serum at 28 °C with 0.8 mM CaCl2 and the basic fibroblast growth factor (BFGF) to enhance cell growth. OFMCs have become permanent cell lines through the spontaneous immortalization crisis at the 20th passage. Olive flounder skeletal muscle myoblasts were induced into a mitogen-poor medium containing 2% horse serum for differentiation; they fused to form multinucleate myotubes. The results indicated complete differentiation of myoblasts into myotubes; we also detected the expression of the myogenic regulatory factors myoD, myogenin, and desmin. Upregulation (Myogenin, desmin) and downregulation (MyoD) of muscle regulation factors confirmed the differentiation in OFMCs.

Keywords: continuous cell line; fish muscle cell; fish satellite cell; olive flounder; skeletal muscle.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Desmin
  • Flounder*
  • Muscle Fibers, Skeletal
  • Muscle, Skeletal
  • Myogenin
  • Satellite Cells, Skeletal Muscle*

Substances

  • Myogenin
  • Desmin

Grants and funding

This research was part of the project entitled ‘Future Fisheries Food Research Center’ funded by the Korea institute of marine science and technology (KIMST) promotions, Ministry of Oceans and Fisheries of the Republic of Korea (Project number—201803932).