Two-sided immune cell could be harnessed to shrink tumors

Researchers have found that a protein called inducible costimulator (ICOS) is necessary for the growth and function of human Th17 cells, while CD28, a transmembrane protein on CD4 cells, stops the ICOS signal. What's more, human Th17 stimulated with ICOS shrank human tumors implanted in a mouse model faster than those stimulated with CD28.

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