alexa Smad7 as a Target for Immunomodulation Strategy in Infl
ISSN: 1745-7580

Immunome Research
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Review Article

Smad7 as a Target for Immunomodulation Strategy in Inflammatory Bowel Diseases

Silvia Sedda1, Edoardo Troncone1, Maria Imeneo2 and Giovanni Monteleone1*

1Department of Systems Medicine, University of Rome “Tor Vergata”, Rome, Italy

2Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy

*Corresponding Author:
Giovanni Monteleone
Department of Systems Medicine
University of Rome “Tor Vergata”, Rome, Italy
Tel: +390620903702
Fax: +390672596391
E-mail: [email protected]

Received date: March 17, 2017; Accepted date: May 17, 2017; Published date: May 22, 2017

Citation: Sedda S, Troncone E, Imeneo M, Monteleone G (2017) Smad7 as a Target for Immunomodulation Strategy in Inflammatory Bowel Diseases. Immunome Res 13:133. doi: 10.4172/1745-7580.1000133

Copyright: © 2017 Sedda S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Inflammatory bowel diseases (IBD) are chronic inflammatory pathologies of the gut, characterized by a relapsing-remitting course. Although IBD pathogenesis is not fully understood, epidemiological and experimental data suggest that multiple environmental factors can, in genetically predisposed individuals, trigger an excessive immune response directed against the antigens of the normal intestinal microflora, which eventually leads to the tissue damage. Defects in the physiological mechanisms/factors of counter-regulation contribute to amplify and sustain such a detrimental response. For instance, in inflamed tissue of IBD patients there is diminished activity of the immunesuppressive cytokine transforming growth factor (TGF)-β1, due to elevated levels of Smad7, an intracellular inhibitor of TGF-β1 signaling. Consistently, knockdown of Smad7 with a specific antisense oligonucleotide suppresses inflammatory signals in cultured intestinal cells of IBD patients and in the gut of mice with IBD-like experimental colitis. Moreover, treatment of patients with active Crohn’s disease, one of the two major IBD in human beings, with Mongersen, an oral compound containing Smad7 antisense oligonucleotide, is accompanied by induction of clinical remission. Altogether these data indicate that targeting Smad7 represents a promising approach to modulate the ongoing mucosal inflammation in IBD.

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