Allergen-encoding bone marrow transfer inactivates allergic T cell responses, alleviating airway inflammation

Al-Kouba, Jane; Wilkinson, Andrew N.; Davies, Janet M.; Phipps, Simon; Hansbro, Philip M.; Steptoe, Raymond J.; Starkey, Malcolm R.; Rudraraju, Rajeev; Werder, Rhiannon B.; Liu, Xiao; Law, Soi-Cheng; Horvat, Jay C.; Brooks, Jeremy F.; Hill, Geoffrey R.

Title: Allergen-encoding bone marrow transfer inactivates allergic T cell responses, alleviating airway inflammation
Creator: Al-Kouba, Jane; Wilkinson, Andrew N.; Davies, Janet M.; Phipps, Simon; Hansbro, Philip M.; Steptoe, Raymond J.; Starkey, Malcolm R.; Rudraraju, Rajeev; Werder, Rhiannon B.; Liu, Xiao; Law, Soi-Cheng; Horvat, Jay C.; Brooks, Jeremy F.; Hill, Geoffrey R.
Relation: Funding BodyNHMRCGrant NumberGNT1013066, ARC FT110100372 http://purl.org/au-research/grants/arc/FT110100372
Relation: JCI Insight Vol. 2, Issue 11
Publisher Link: http://dx.doi.org/10.1172/jci.insight.85742
Publisher: American Society for Clinical Investigation
Resource Type: journal article
Date: 2017
Description: Memory Th2 cell responses underlie the development and perpetuation of allergic diseases. Because these states result from immune dysregulation, established Th2 cell responses represent a significant challenge for conventional immunotherapies. New approaches that overcome the detrimental effects of immune dysregulation are required. We tested whether memory Th2 cell responses were silenced using a therapeutic approach where allergen expression in DCs is transferred to sensitized recipients using BM cells as a vector for therapeutic gene transfer. Development of allergen-specific Th2 responses and allergen-induced airway inflammation was blocked by expression of allergen in DCs. Adoptive transfer studies showed that Th2 responses were inactivated by a combination of deletion and induction of T cell unresponsiveness. Transfer of BM encoding allergen expression targeted to DCs terminated, in an allergen-specific manner, Th2 responses in sensitized recipients. Importantly, when preexisting airway inflammation was present, there was effective silencing of Th2 cell responses, airway inflammation was alleviated, and airway hyperreactivity was reversed. The effectiveness of DC-targeted allergen expression to terminate established Th2 responses in sensitized animals indicates that exploiting cell-intrinsic T cell tolerance pathways could lead to development of highly effective immunotherapies.
Subject: immunology; stem cells; bone marrow; T cell; airway inflammation
Identifier: http://hdl.handle.net/1959.13/1357581
Identifier: uon:31941
Identifier: ISSN:2379-3708
Language: eng
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