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Amazing IL-9: revealing a new function for an “old” cytokine
Edgar Schmitt, Tobias Bopp
Edgar Schmitt, Tobias Bopp
Published October 15, 2012
Citation Information: J Clin Invest. 2012;122(11):3857-3859. https://doi.org/10.1172/JCI65929.
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Commentary

Amazing IL-9: revealing a new function for an “old” cytokine

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Abstract

The incidence of melanoma — the most aggressive form of skin cancer — is dramatically increasing, while the development of innovative therapeutic strategies continues to be challenging, especially due to a lack of knowledge about the molecular mechanisms underlying melanoma progression as well as antitumor immunity. In this issue of the JCI, Yong Lu and colleagues report a central role for Th9 cells in antitumor immunity.

Authors

Edgar Schmitt, Tobias Bopp

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Figure 1

Effector functions of Th9 cells in antitumor immune responses.

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Effector functions of Th9 cells in antitumor immune responses.
Th9-deriv...
Th9-derived IL-9 can have direct antitumor effects or can indirectly influence tumor growth by altering immune responses. IL-9 induces the production of CCL20 in lung epithelial cells, which mediates the recruitment of CCR6-expressing DCs and CD8+ CTLs. In addition, the MEA of IL-9 could further potentiate the induction of an adaptive antitumor immune response by providing mast cell–derived IL-1β and TNF-α. IL-9R, IL-9 receptor.
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