EGF, TGF- α and Amphiregulin Differently Regulate Endometrium-Derived Mesenchymal Stromal/Stem Cells.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE

Original Publication: Basel, Switzerland : MDPI, [2000-

Epidermal Growth Factor*/pharmacology ; Mesenchymal Stem Cells*; Female ; Humans ; Amphiregulin ; Transforming Growth Factor alpha/pharmacology ; HeLa Cells ; Ligands ; ErbB Receptors ; Receptor Protein-Tyrosine Kinases ; Endometrium

The prototypical receptor tyrosine kinase epidermal growth factor receptor (EGFR) is regulated by a set of its ligands, which determines the specificity of signaling and intracellular fate of the receptor. The EGFR signaling system is well characterized in immortalized cell lines such as HeLa derived from tumor tissues, but much less is known about EGFR function in untransformed multipotent stromal/stem cells (MSCs). We compared the effect of epidermal growth factor (EGF), transforming growth factor-α (TGF-α) and amphiregulin (AREG) on physiological responses in endometrial MSCs (enMSC) and HeLa cells. In addition, using Western blotting and confocal microscopy, we studied the internalization and degradation of EGFR stimulated by the three ligands in these cell lines. We demonstrated that unlike HeLa, EGF and TGF-α, but not AREG, stimulated enMSC proliferation and prevented decidual differentiation in an EGFR-dependent manner. In HeLa cells, EGF targeted EGFR for degradation, while TGF-α stimulated its recycling. Surprisingly, in enMSC, both ligands caused EGFR degradation. In both cell lines, AREG-EGFR internalization was not registered. In HeLa cells, EGFR was degraded within 2 h, restoring its level in 24 h, while in enMSC, degradation took more than 4-8 h, and the low EGFR level persisted for several days. This indicates that EGFR homeostasis in MSCs may differ significantly from that in immortalized cell lines.

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23-14-00335 Russian Science Foundation

Keywords: EGF; HeLa; amphiregulin; differentiation; endometrium; epidermal growth factor receptor; mesenchymal stromal/stem cells; proliferation; transforming growth factor-α

62229-50-9 (Epidermal Growth Factor)
0 (Amphiregulin)
0 (Transforming Growth Factor alpha)
0 (Ligands)
EC 2.7.10.1 (ErbB Receptors)
EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases)

Date Created: 20230909 Date Completed: 20230911 Latest Revision: 20230918

20250114

PMC10487484

10.3390/ijms241713408

37686213