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A Single Infusion of Engineered Long-lived and Multifunctional T Cells Confers Durable Remission of Asthma in Mice

Overview
Journal Nat Immunol
Date 2024 May 27
PMID 38802511
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Abstract

Asthma, the most prevalent respiratory disease, affects more than 300 million people and causes more than 250,000 deaths annually. Type 2-high asthma is characterized by interleukin (IL)-5-driven eosinophilia, along with airway inflammation and remodeling caused by IL-4 and IL-13. Here we utilize IL-5 as the targeting domain and deplete BCOR and ZC3H12A to engineer long-lived chimeric antigen receptor (CAR) T cells that can eradicate eosinophils. We call these cells immortal-like and functional IL-5 CAR T cells (5T) cells. 5T cells were further modified to secrete an IL-4 mutein that blocks IL-4 and IL-13 signaling, designated as 5T4 cells. In asthma models, a single infusion of 5T4 cells in fully immunocompetent mice, without any conditioning regimen, led to sustained repression of lung inflammation and alleviation of asthmatic symptoms. These data show that asthma, a common chronic disease, can be pushed into long-term remission with a single dose of long-lived CAR T cells.

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