Intestinal Mucosal Wound Healing and Barrier Integrity in IBD-Crosstalk and Trafficking of Cellular Players
- PMID: 33834033
- PMCID: PMC8021701
- DOI: 10.3389/fmed.2021.643973
Intestinal Mucosal Wound Healing and Barrier Integrity in IBD-Crosstalk and Trafficking of Cellular Players
Abstract
The intestinal epithelial barrier is carrying out two major functions: restricting the entry of potentially harmful substances while on the other hand allowing the selective passage of nutrients. Thus, an intact epithelial barrier is vital to preserve the integrity of the host and to prevent development of disease. Vice versa, an impaired intestinal epithelial barrier function is a hallmark in the development and perpetuation of inflammatory bowel disease (IBD). Besides a multitude of genetic, molecular and cellular alterations predisposing for or driving barrier dysintegrity in IBD, the appearance of intestinal mucosal wounds is a characteristic event of intestinal inflammation apparently inducing breakdown of the intestinal epithelial barrier. Upon injury, the intestinal mucosa undergoes a wound healing process counteracting this breakdown, which is controlled by complex mechanisms such as epithelial restitution, proliferation and differentiation, but also immune cells like macrophages, granulocytes and lymphocytes. Consequently, the repair of mucosal wounds is dependent on a series of events including coordinated trafficking of immune cells to dedicated sites and complex interactions among the cellular players and other mediators involved. Therefore, a better understanding of the crosstalk between epithelial and immune cells as well as cell trafficking during intestinal wound repair is necessary for the development of improved future therapies. In this review, we summarize current concepts on intestinal mucosal wound healing introducing the main cellular mediators and their interplay as well as their trafficking characteristics, before finally discussing the clinical relevance and translational approaches to therapeutically target this process in a clinical setting.
Keywords: IBD; intestinal epithelial barrier function; intestinal epithelial cells; mucosal healing; wound healing.
Copyright © 2021 Sommer, Wiendl, Müller, Heidbreder, Voskens, Neurath and Zundler.
Conflict of interest statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Figures
![Figure 1](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb5b/8021701/7b5de69c8088/fmed-08-643973-g0001.gif)
Similar articles
-
Mend Your Fences: The Epithelial Barrier and its Relationship With Mucosal Immunity in Inflammatory Bowel Disease.Cell Mol Gastroenterol Hepatol. 2017 Mar 23;4(1):33-46. doi: 10.1016/j.jcmgh.2017.03.007. eCollection 2017 Jul. Cell Mol Gastroenterol Hepatol. 2017. PMID: 28560287 Free PMC article. Review.
-
Development, validation and implementation of an in vitro model for the study of metabolic and immune function in normal and inflamed human colonic epithelium.Dan Med J. 2015 Jan;62(1):B4973. Dan Med J. 2015. PMID: 25557335 Review.
-
Immune Cell Circuits in Mucosal Wound Healing: Clinical Implications.Visc Med. 2020 Apr;36(2):129-136. doi: 10.1159/000506846. Epub 2020 Mar 13. Visc Med. 2020. PMID: 32355670 Free PMC article. Review.
-
Pregnane X receptor agonists enhance intestinal epithelial wound healing and repair of the intestinal barrier following the induction of experimental colitis.Eur J Pharm Sci. 2014 May 13;55:12-9. doi: 10.1016/j.ejps.2014.01.007. Epub 2014 Jan 29. Eur J Pharm Sci. 2014. PMID: 24486481
-
Mechanisms and modulation of intestinal epithelial repair.Inflamm Bowel Dis. 2001 Feb;7(1):68-77. doi: 10.1097/00054725-200102000-00014. Inflamm Bowel Dis. 2001. PMID: 11233665 Review.
Cited by
-
Pea Albumin Attenuates Dextran Sulfate Sodium-Induced Colitis by Regulating NF-κB Signaling and the Intestinal Microbiota in Mice.Nutrients. 2022 Sep 1;14(17):3611. doi: 10.3390/nu14173611. Nutrients. 2022. PMID: 36079868 Free PMC article.
-
Gut homeostasis, injury, and healing: New therapeutic targets.World J Gastroenterol. 2022 May 7;28(17):1725-1750. doi: 10.3748/wjg.v28.i17.1725. World J Gastroenterol. 2022. PMID: 35633906 Free PMC article. Review.
-
Epithelial JAM-A is fundamental for intestinal wound repair in vivo.JCI Insight. 2022 Sep 8;7(17):e158934. doi: 10.1172/jci.insight.158934. JCI Insight. 2022. PMID: 35943805 Free PMC article.
-
Hypoxia-Inducible Factor 1-Alpha Stabilizers in the Treatment of Inflammatory Bowel Diseases: Oxygen as a Novel IBD Therapy?J Crohns Colitis. 2022 Dec 5;16(12):1924-1932. doi: 10.1093/ecco-jcc/jjac092. J Crohns Colitis. 2022. PMID: 35776532 Free PMC article. Review.
-
Artemisinin derivative SM934 in the treatment of autoimmune and inflammatory diseases: therapeutic effects and molecular mechanisms.Acta Pharmacol Sin. 2022 Dec;43(12):3055-3061. doi: 10.1038/s41401-022-00978-4. Epub 2022 Sep 1. Acta Pharmacol Sin. 2022. PMID: 36050518 Free PMC article. Review.
References
Publication types
LinkOut - more resources
Full Text Sources
Other Literature Sources