Transcriptome Analysis of Signaling Pathways in Caco-2 Cells Involved in the Formation of Intestinal Villi

Abstract

Caco-2 cells are traditionally used to construct in vitro models of the intestinal barrier. One characteristic of the mature intestine is the presence of villi—connective tissue outgrowths covered with epithelial cells. It was recently shown that Caco-2 cells form structures resembling intestinal villi during prolonged cultivation. In this work, we showed via transcriptome analysis that the BMP and PDGF signaling cascades involved in the formation of villi in vivo are significantly altered during the differentiation of Caco-2 cells and, therefore, can participate in the formation of similar structures in vitro. In particular, we found a significant decrease in the expression of the BMP4, BMP7, and BMP8A genes in differentiated cells as compared to undifferentiated cells. We also first discovered periodic fluctuations in transepithelial resistance upon the differentiation of Caco-2 cells. The period of observed fluctuations indicates that they can occur as a result of cell proliferation during villus formation.

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Funding

The study was funded by the Russian Science Foundation (project no.16-19-10597).

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Correspondence to S. V. Nikulin.

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The authors declare that they have no conflicts of interest.

This article does not contain any studies involving animals performed by any of the authors.

This article does not contain any studies involving human participants performed by any of the authors.

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Translated by I. Gordon

Abbreviations: BMP—bone morphogenetic protein; FBS—fetal bovine serum; PDGF—platelet derived growth factor; R—Pearson’s correlation coefficient; TEER—transepithelial/transendothelial resistance.

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Nikulin, S.V., Raigorodskaya, M.P. & Sakharov, D.A. Transcriptome Analysis of Signaling Pathways in Caco-2 Cells Involved in the Formation of Intestinal Villi. Appl Biochem Microbiol 56, 898–901 (2020). https://doi.org/10.1134/S0003683820090069

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Keywords:

  • impedance spectroscopy
  • intestine
  • villi
  • TEER
  • BMP
  • PDGF