TNIP1-mediated TNF-α/NF-κB signalling cascade sustains glioma cell proliferation.

As a malignant tumour of the central nervous system, glioma exhibits high incidence and poor prognosis. Although TNIP1 and the TNF-α/NF-κB axis play key roles in immune diseases and inflammatory responses, their relationship and role in glioma remain unknown. Here, we revealed high levels of TNIP1 and TNF-α/NF-κB in glioma tissue. Glioma cell proliferation was activated with TNF-α treatment and showed extreme sensitivity to the TNF receptor antagonist. Furthermore, loss of TNIP1 disbanded the A20 complex responsible for IκB degradation and NF-κB nucleus translocation, and consequently erased TNFα-induced glioma cell proliferation. Thus, our investigation uncovered a vital function of the TNIP1-mediated TNF-α/NF-κB axis in glioma cell proliferation and provides novel insight into glioma pathology and diagnosis.

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