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. 2023 Aug 3;14(8):495. doi: 10.1038/s41419-023-06027-0

Fig. 3. Defucosylation-promoted CMA degradation of B7-H3.

Fig. 3

A Immunoblots of B7-H3 protein in SW480 and HCT-8 cells after knockdown of FUT8 and / or HSC70. B Immunoblots of B7-H3 protein in SW480 and HCT-8 cells after knockdown of FUT8 and / or LAMP2A. C Co-IP assays showed the effects of FUT8 knockdown on the interaction between B7-H3 and HSC70 or LAMP2A. D Schematics of truncated B7-H3 (aa 1-258) with the N104 glycosylation site and 106-110SLRLQ motif for HSC70 binding, and AOL blots of the co-IP B7-H3 protein with wildtype N104 and N91Q/N189Q/N215Q mutations. E Schematics of truncated B7-H3 (aa 1-258) with N104Q or Q110A mutation, and immunoblots of truncated B7-H3 in SW480 cells that were treated with 100 μM CHX after transfection of B7-H3 expression plasmids containing N104Q or Q110A mutation. F Schematics of truncated B7-H3 (aa 1-258) with N104Q or VRV112-114NAS mutation, and immunoblots of truncated B7-H3 containing N104Q and / or VRV112-114NAS mutation in SW480 cells. G Co-IP assays showed the interaction between the truncated B7-H3 containing N104Q or Q110A mutation and HSC70 or LAMP2A. All experiments were performed in technical triplicates and are displayed as mean ± s.d.; ns no significance; *P < 0.05, **P < 0.01, ***P < 0.001.