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. 2011 Sep 9;2(8):604–611. doi: 10.1007/s13238-011-1083-5

Current understanding of Th2 cell differentiation and function

Zhenhu Li 1, Yuan Zhang 1, Bing Sun 1,2,✉
PMCID: PMC4875329  PMID: 21904976

Abstract

Helper T cell (Th) has been identified as a critical immune cell for regulating immune response since 1980s. The type 2 helper Tcell (Th2), characterized by the production of interleukin-4 (IL-4), IL-5 and IL-13, plays a critical role in immune response against helminths invading cutaneous or mucosal sites. It also has a functional role in the pathophysiology of allergic diseases such as asthma and allergic diarrhea. Currently, most studies have shed light on Th2 cell function and behavior in specific diseases, such as asthma and helminthes inflammation, but not on Th2 cell itself and its differentiation. Based on different cytokines and specific behavior in recent research, Th2 cell is also regarded as new subtypes of T cell, such as IL-9 secreting T cell (Th9) and CXCR5+ T follicular helper cells. Here, we will discuss the latest view of Th2 cell towards their function and the involvement of Th2 cell in diseases.

Keywords: type 2 helper T cell (Th2), asthma, IL-9 secreting T cell (Th9), T follicular helper cell

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