| 体外研究: |
PROTAC EGFR degrader 3 (compound CP17) shows anti-proliferative activity of PROTACs with IC50s of 32 nM, 1.60 nM, >10000nM for H1975 (EGFRL858/T790M), HCC827 (EGFRdel19), A431 (EGFRWT) cells, respectively. PROTAC EGFR degrader 3 (0, 10, 100, 1000, 10000 nM) exhibits poor cellular activity with IC50 of 481 nM, 669 nM for Ba/F3 (EGFRdel19/T790M/C797S) and Ba/F3 (EGFRL858/T790M/C797S) cells, respectively. PROTAC EGFR degrader 3 (0-10000 nM) suppresses the proliferation of the PC9 (EGFRdel19/T790M/C797S) and H1975 (EGFRL858/T790M/C797S) cells, respectively. PROTAC EGFR degrader 3 (30 nM; 0-72 h) decreases the expression level of EGFRL858/T790M after 8h, and degradation rate maximizes after 48 h. PROTAC EGFR degrader 3 (0.3, 1, 3, 10, 100, 300 nM; 24, 48 h) induces the degradation of EGFRL858/T790M and EGFRdel19 with DC50s of 1.56 nM and 0.49 nM, respectively. PROTAC EGFR degrader 3 (100, 1000 nM; 24 h) shows selective against mutant EGFR in the H1975 and HCC827 cells. PROTAC EGFR degrader 3 (0.3, 1, 3, 10, 100, 300 nM; 24 h) effectively blocks EGFR singnal transduction, leading to cell proliferation inhibition. PROTAC EGFR degrader 3 (30 nM) induces EGFR mutant degradation, and the lysosome is involved in the degradation process. |