IndraLab

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AR-V7 binds USP22. 4 / 4
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"Unlike rutaecarpine, nobiletin failed to alter the GRP78-mediated degradation of AR-V7.In conclusion, this research not only demonstrates the reason why nobiletin suppressed the growth process of CRPC through the selective degradation of AR-V7, but also enriches our understanding of the degradation mechanism of AR-V7 and provides an efficient treatment target to overcome CRPC via targeting the interaction between AR-V7 and USP14/USP22 (Fig. 7G)."

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"Immunofluorescence and western blot experiments showed that these molecular events mainly occurred in the nucleus.We also confirmed that nobiletin can significantly decrease the interactions between AR-V7 and USP14/USP22 in a time and concentration-dependent manner, but did not affect the interactions between AR-FL and USP14/USP22, which may explain why nobiletin exhibits a certain selectivity in inducing the degradation of AR-V7."

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"Binding of USP22 to AR-V7 prevents AR-V7 protein degradation."

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"We confirmed the endogenous interaction between AR-V7 and USP22."