IndraLab

Statements



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"Ectopic expression of USP18 in tumor cells suppressed tumorigenesis and antitumor immune response whereas inhibition of USP18 expression promoted tumorigenesis and immunosurveillance."

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"USP18 enzymatic function typically attenuates the immune response by removing interferon-stimulated gene 15 (ISG15) from protein substrates."

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"Therefore, USP18 inhibits the immune response by reversing protein ISGylation and directly inhibiting IFN signaling pathway [ 39 ]."

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"USP2b, USP3, USP18, USP25, UL36USP and HAUSP play a role of antivirus; while USP4, USP13, USP15 and USP17 negatively regulate antiviral immune response."

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"Significantly, higher infiltration of CD8 T cells was noted in these tumors, suggesting that the depletion of Usp18 in solid tumors can induce ICD and enhance the immune response."

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"Indeed, higher infiltration of CD8 T cells was observed in these tumors, suggesting that depletion of Usp18 in solid tumors can induce ICD and enhance the immune response (Supplementary Fig. 9c right)."

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"Based on these interesting findings, USP18 can attenuate the immune response even without dampening the type I IFN signaling.Finally, it has been reported that STAT1 transcriptional activity and NF-κB signaling activation, which regulate both the transcription and expression of ISGs, can be inhibited by SLFN5 and SLFN2, respectively [78,79]."

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"These results suggest that USP18 deletion leads to CSF1R downregulation in TAMs and a decrease in pro-tumor/immunosuppressive macrophages, contributing to enhanced anti-tumor macrophage polarization, consequently promoting a Th1-dominant TME and enhancing CD8 T cell-mediated anti-tumor immunity, in agreement with previous reports."

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"By modulating interferon signaling, USP18 can suppress the immune response to the transplanted ovarian tissue and thus reduce the risk of rejection."

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"These observations suggest that residual leukemia cells may upregulate USP18 expression as a protective mechanism against chemotherapy-induced death.Taken together, these results indicate that reduction of Usp18 expression potently suppresses cancer development and induces an anti-tumor immune response in vivo by a mechanism dependent on type I IFN signaling."