NDLI: Local delivery of AAV2-CTLA4IgG decreases sialadenitis and improves gland function in the C57BL/6.NOD-Aec1Aec2mouse model of Sjögren's syndrome

Content Provider	Springer Nature : BioMed Central
Author	Yin, Hongen Nguyen, Cuong Q Samuni, Yuval Uede, Toshimitsu Peck, Ammon B Chiorini, John A
Abstract	Introduction Cytotoxic T-lymphocyte antigen 4 (CTLA-4) is a key negative costimulatory molecule that displays a wide range of anti-inflammatory properties and is currently approved to treat rheumatoid arthritis as a recombinant fusion protein (CTLA4IgG). To better understand the role of CTLA4IgG in primary Sjögren's syndrome (pSS), we generated a recombinant adeno-associated virus vector serotype 2 (AAV2) expressing a chimera of mouse CTLA-4 fused with a human immunoglobulin (AAV2-CTLA4IgG) and observed the effect of this molecule in C57BL/6.NOD-Aec1Aec2 mice, an animal model of pSS. Methods A recombinant adeno-associated virus-2 (AAV-2) vector was constructed encoding a CTLA4IgG fusion protein. The AAV2-CTLA4IgG vector and an AAV2 control vector encoding beta galactosidase (LacZ) were administered by retrograde cannulation of the submandibular glands of C57BL/6.NOD-Aec1Aec2 mice. Protein expression was measured by ELISA and salivary glands were assessed for inflammation and activity. Results Recombinant CTLA4IgG blocked B7 expression on macrophages in vitro. In vivo, localized expression of CTLA4IgG in the salivary glands of C57BL/6.NOD-Aec1Aec2 mice inhibited the loss of salivary gland activity and decreased T and B cell infiltration as well as dendritic cells and macrophages in the glands compared with control mice. In addition a decrease in several proinflammatory cytokines and an increase in transforming growth factor beta-1 (TGF-β1) expression were also observed. Conclusions These data suggest expression of CTLA4IgG in the salivary gland can decrease the inflammation and improve the xerostomia reported in these mice.
Related Links	https://arthritis-research.biomedcentral.com/counter/pdf/10.1186/ar3753.pdf
Ending Page	11
Page Count	11
Starting Page	1
File Format	HTM / HTML
ISSN	14786362
DOI	10.1186/ar3753
Journal	Arthritis Research & Therapy
Issue Number	1
Volume Number	14
Language	English
Publisher	BioMed Central
Publisher Date	2012-02-27
Access Restriction	Open
Subject Keyword	Rheumatology Orthopedics Sjögren's Syndrome salivary gland dysfunction adeno-associated virus (AAV) CTLA4IgG fusion protein prevention
Content Type	Text
Resource Type	Article
Subject	Immunology and Allergy Immunology Rheumatology
Journal Impact Factor	4.4/2023
5-Year Journal Impact Factor	4.9/2023

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Local delivery of AAV2-CTLA4IgG decreases sialadenitis and improves gland function in the C57BL/6.NOD-Aec1Aec2 mouse model of Sjögren's syndrome

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Local delivery of AAV2-CTLA4IgG decreases sialadenitis and improves gland function in the C57BL/6.NOD-Aec1Aec2mouse model of Sjögren's syndrome

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