NDLI: Aryl Hydrocarbon Receptor Antagonism Attenuates Growth Factor Expression, Proliferation, and Migration in Fibroblast-Like Synoviocytes from Patients with Rheumatoid Arthritis

Content Provider	PubMed Central
Author	Lahoti, Tejas S. Hughes, Jarod M. Ann, Kusnadi John, Kaarthik Zhu, Bokai Murray, Iain A. Gowda, Krishne Peters, Jeffrey M. Amin, Shantu G. Perdew, Gary H.
Copyright Year	2014
Abstract	Rheumatoid arthritis (RA) is a chronic autoimmune disease with high morbidity and mortality. Within the inflammatory milieu, resident fibroblast-like synoviocytes (FLS) in the synovial tissue undergo hyperplasia, which leads to joint destruction. Epidemiologic studies and our previous research suggest that activation of the aryl hydrocarbon receptor (AHR) pathway plays an instrumental role in the inflammatory and destructive RA phenotype. In addition, our recent studies implicate the AHR in the regulation of the expression of several growth factors in established tumor cell lines. Thus, under inflammatory conditions, we hypothesized that the AHR is involved in the constitutive and inducible expression of several growth factors, FLS proliferation and migration, along with protease-dependent invasion in FLS from patients with RA (RA-FLS). Treatment with the AHR antagonist GNF351 inhibits cytokine-induced expression of vascular endothelial growth factor-A (VEGF-A), epiregulin, amphiregulin, and basic fibroblast growth factor mRNA through an AHR-dependent mechanism in both RA-FLS and FLS. Secretion of VEGF-A and epiregulin from RA-FLS was also inhibited upon GNF351 treatment. RA-FLS cell migration, along with cytokine-induced RA-FLS cell proliferation, was significantly attenuated by GNF351 exposure. Treatment of RA-FLS with GNF351 mitigated cytokine-mediated expression of matrix metalloproteinase-2 and -9 mRNA and diminished the RA-FLS invasive phenotype. These findings indicate that inhibition of AHR activity may be a viable therapeutic target in amelioration of disease progression in RA by attenuating growth factor release; FLS proliferation, migration, and invasion; and inflammatory activity.
Related Links	http://dx.doi.org/10.1124/jpet.113.209726
Ending Page	245
Page Count	10
Starting Page	236
File Format	PDF
ISSN	15210103
e-ISSN	15210103
Journal	The Journal of Pharmacology and Experimental Therapeutics
Issue Number	2
Volume Number	348
Language	English
Publisher	The American Society for Pharmacology and Experimental Therapeutics
Publisher Date	2013-12-30
Access Restriction	Open
Rights Holder	The American Society for Pharmacology and Experimental Therapeutics
Subject Keyword	Molecular Medicine Pharmacology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Molecular Medicine Pharmacology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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