Insulin-like factor 3 promotes wound healing at the ocular surface

Hampel U, Klonisch T, Sel S, Schulze U, Paulsen F (2013)

Publication Type: Journal article

Publication year: 2013

Journal

Endocrinology Endocrine Society

Book Volume: 154

Pages Range: 2034-2045

Journal Issue: 6

DOI: 10.1210/en.2012-2201

Abstract

Tear fluid is known to contain many different hormones with relevance for ocular surface homeostasis. We studied the presence and functional role of insulin-like factor 3 (INSL3) and its cognate receptor RXFP2 (relaxin/insulin-like family peptide receptor 2) at the ocular surface and in tears. Expression of human INSL3 and RXFP2 was determined in tissues of the ocular surface and lacrimal apparatus; in human corneal (HCE), conjunctival (HCjE), and sebaceous (SC) epithelial cell lines; and in human tears by RT-PCR and ELISA. We investigated effects of human recombinant INSL3 (hrINSL3) on cell proliferation and cell migration and the influence of hrINSL3 on the expression of MMP2, -9, and -13 and TIMP1 and -2 was quantified by real-time PCR and ELISA in HCE, HCjE, and SC cells. We used a C57BL/6 mouse corneal defect model to elucidate the effect of topical application of hrINSL3 on corneal wound healing. INSL3 and RXFP2 transcripts and INSL3 protein were detected in all tissues and cell lines investigated. Significantly higher concentrations of INSL3 were detected in tears from male vs. female volunteers. Stimulation of HCE, HCjE, and SC with hrINSL3 significantly increased cell proliferation in HCjE and SC and migration of HCjE. Treatment with hrINSL3 for 24 hours regulated MMP2, TIMP1, and TIMP2 expression. The local application of hrINSL3 onto denuded corneal surface resulted in significantly accelerated corneal wound healing in mice. These findings suggest a novel and gender-specific role for INSL3 and cognate receptor RXFP2 signaling in ocular surface homeostasis and determined a novel role for hrINSL3 in corneal wound healing. Copyright © 2013 by The Endocrine Society.

Authors with CRIS profile

Ulrike Hampel Lehrstuhl für Funktionelle und Klinische Anatomie Friedrich Paulsen Lehrstuhl für Funktionelle und Klinische Anatomie

Involved external institutions

Martin-Luther-Universität Halle-Wittenberg (MLU) DE Germany (DE) University of Manitoba CA Canada (CA)

How to cite

APA:

Hampel, U., Klonisch, T., Sel, S., Schulze, U., & Paulsen, F. (2013). Insulin-like factor 3 promotes wound healing at the ocular surface. Endocrinology, 154(6), 2034-2045. https://doi.org/10.1210/en.2012-2201

MLA:

Hampel, Ulrike, et al. "Insulin-like factor 3 promotes wound healing at the ocular surface." Endocrinology 154.6 (2013): 2034-2045.

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