Journal: Nature Communications
Article Title: Mismatch repair deficiency predicts response to HER2 blockade in HER2-negative breast cancer
doi: 10.1038/s41467-021-23271-0
Figure Lengend Snippet: A Western blots demonstrating increase in pHER2 and downstream signaling in sh MLH1 MCF7 cells treated with fulvestrant relative to sh Luc cells. Quantification of four independent replicates conducted through ImageJ in accompanying dot plots. Validation in T47D cells in Fig. . Immunofluorescent staining for HER2 in MCF7 sh Luc and sh MLH1 cells in vitro ( B ), in MCF7 sh Luc and sh MLH1 xenograft tumors ( C ), and in WHIM20, PMS2 mutant, ER + /HER2 − PDX tumors ( D ), grown with or without fulvestrant. Accompanying quantification presented as strip charts. Three independent experiments or tumors from each group were quantified. Two-sided Student’s t test determined p values. Supporting data from FACS analysis are presented in Fig. . Scale bars represent 50 µ. Source data for all figures available with paper.
Article Snippet: Antibodies used were pHER2 Y1196 (D66B7) (Cell Signaling; cat# 6942S), total HER2 (Thermo Scientific; NeoMarkers; cat# MS-730-P1ABX), pAkt S473 (D9E) XP (Cell Signaling; cat#4060S), total Akt (Cell Signaling; cat#9272S), pS6 (S235/236) (Cell Signaling; cat# 2211S), total S6 (5G10) (Cell Signaling; cat# 2217S), MLH1 (1:2,000, Sigma-Aldrich; cat# WH0004292M2), ER clone 60C (EMD Millipore; cat# 04-820), and GAPDH (0411) (Santa Cruz; cat# sc-47724).
Techniques: Western Blot, Staining, In Vitro, Mutagenesis, Stripping Membranes