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Development and characterization of a stable bovine intestinal sub-epithelial myofibroblast cell line from ileum of a young calf

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Abstract

Intestinal sub-epithelial myofibroblasts (ISEMFs) are mesenchymal cells that do not express cytokeratin but express α-smooth muscle actin and vimentin. Despite being cells with diverse functions, there is a paucity of knowledge about their origin and functions primarily due to the absence of a stable cell line. Although myofibroblast in vitro models for human, mouse, and pig are available, there is no ISEMF cell line available from young calves. We isolated and developed an ileal ISEMF cell line from a 2-d-old calf that expressed α-smooth muscle actin and vimentin but no cytokeratin indicating true myofibroblast cells. To overcome replicative senescence, we immortalized primary cells with SV40 large T antigen. We characterized and compared both primary and immortalized ileal ISEMF cells for surface glycan and Toll-like-receptor (TLR) expression by lectin-binding assay and real-time quantitative PCR (RT-qPCR) assay respectively. SV40 immortalization significantly decreased surface lectin binding for lectins GSL-I, PHA-L, ECL, Jacalin, Con-A, LCA, and LEL. Both cell types expressed TLRs 1–9 and showed no significant differences in TLR expression. Thus, these cells can be useful in vitro model to study ISEMF’s origin, physiology, and functions.

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Acknowledgements

Radhey S. Kaushik and Tirth Uprety were funded and supported by USDA, NIFA, and SDSU Agricultural Experiment Station Hatch grant number SD00H547-15. We acknowledge the use of the SDSU-FGCF supported in part by NSF/EPSCoR grant number 0091948 and by the State of South Dakota.

Funding

This research project was funded and supported by USDA, NIFA, and SDSU Agricultural Experiment Station Hatch grant number SD00H547-15. This study was also funded by USDA/CSREES through the project title JDIP: Johne’s Disease Integrated Program in Research, Education, and Extension, grant number 2004-35605-14243, sub-award No. Q6286224171.

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Contributions

RSK conceived and designed the study, received funding, and conducted some of the experiments. RSK also reviewed the manuscript. TU, LA, and CS conducted the experiments, analyzed the results, and wrote the paper. BBS is an undergraduate student who helped with lectin profiling of ISEMF cells. AY helped on flow cytometry–based lectin-binding assays. FL and MH contributed to reagents/materials and analysis and helped in microscopy.

Corresponding author

Correspondence to Radhey S. Kaushik.

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The authors declare that they have no conflict of interest.

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Editor: Tetsuji Okamoto

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Uprety, T., Spurlin, B.B., Antony, L. et al. Development and characterization of a stable bovine intestinal sub-epithelial myofibroblast cell line from ileum of a young calf. In Vitro Cell.Dev.Biol.-Animal 55, 533–547 (2019). https://doi.org/10.1007/s11626-019-00365-0

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  • DOI: https://doi.org/10.1007/s11626-019-00365-0

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