Published 21.11.2025

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Publication details

Journal : npj Science of Food , vol. 9 , p. 1–10 , Friday 21. November 2025

International Standard Numbers :
Electronic : 2396-8370

Publication type : Academic article

Contributors : Skrivergaard, S.; Pedersen, Mona Elisabeth; Holck, Askild Lorentz; Fagerlund, Annette; Axelsson, Lars; Solberg, Nina Therese; Rasmussen, M. K.; Young, J. F.; Therkildsen, M.; Rønning, Sissel Beate

Issue : 1

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Summary

Growth factors (GFs) contribute to over 90% of the total expenses of medium costs. In this study, a codon-optimized gene encoding bovine, salmon, and cod FGF-2 was cloned into an E. coli expression vector. The bioactivity of the recombinant FGF-2 was tested in serum-free medium, demonstrating its ability to support MuSC proliferation and signaling pathways, ERK, and p38. Using serum-free medium with fetuin and Insulin–Transferrin–Selenium (ITS), all three in-house-produced recombinant FGF-2 variants showed positive effects on MuSC proliferation. Notably, bovine FGF-2 performed better using low concentrations (2 ng/mL) than the salmon and cod FGF-2, which required higher concentrations (17.5–70 ng/mL) to achieve the same effect on the cells. A synergistic relationship between bovine FGF-2 and the p38 inhibitor was revealed. These findings suggest that the medium cost from FGF-2 can be significantly reduced with optimized production and application strategies, supporting the large-scale viability of CM production.

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