Journal: Nature Biomedical Engineering
Article Title: Profiling protein–protein interactions to predict the efficacy of B-cell-lymphoma-2-homology-3 mimetics for acute myeloid leukaemia
doi: 10.1038/s41551-024-01241-3
Figure Lengend Snippet: a , Schematic for BH3 profiling based on JC-1 staining, and measurement of BCL2 levels using flow cytometry or western blotting for primary AML samples. b,c , BH3 profiling on HL60 cells. ( b ) Relative fluorescence units (RFU) of 590 nm wavelength for HL60 cells through the treatment of BH3 peptides or BH3 mimetics, ( c ) Depolarization of HL60 cells through the BH3 profiling. Depolarization by 10 μM of BAD peptides was indicated. d,e , Correlations for ex vivo ABT-199 AUC with ( d ) depolarizations by BAD (10 μM) – HRK (10 μM) peptides, ( e ) combination of multiple PPI metrics (BCL2-BIM BH3 PBA, BCL2-BAX CPX, and BCLxL-BAK CPX). The outliers identified in model ( d ) were indicated ( n = 14) (One-sided F -test, p -value = 0.011, 8.1e-05). f,g , ROC curves for ex vivo ABT-199 responses with ( f ) depolarizations by BAD (10 μM) – HRK (10 μM) peptides, ( g ) Combination of multiple PPI metrics (Two-sided t -test, p -value = 0.07, 0.009). h , Correlations between BCL2 protein levels determined by SMPC and flow cytometry for primary AML samples (n = 14 ). i , Prediction models for ABT-199 ex vivo AUC with BCL2 protein levels determined by flow cytometry (One-sided F -test, p -value = 0.077). j , Correlations between BCL2 protein levels determined by SMPC and western blotting for primary AML samples ( n = 32). The raw blot image is provided as a Source Data. k , Prediction models for ABT-199 ex vivo AUC with BCL2 protein levels determined by western blotting (One-sided F -test, p -value = 0.0003).
Article Snippet: All full-length BCL2-family proteins ( BCL2 (HG10195-M, SinoBiological), BCLxL (HG10455-M, SinoBiological), MCL1 (HG10240-M, SinoBiological), BIM EL (HG13816-G, SinoBiological), BAD (HG10020-M, SinoBiological), BAX (HG11619-M, SinoBiological), BAK (HG10450-M, SinoBiological) and NOXA (HG16548-U, SinoBiological)) were isolated from their respective human complementary (c)DNA. cDNA of BIM BH3 (MRQAEPADMRPEIWIAQELRRIGDEFNAYYARR) was isolated from BIM EL cDNA. cDNA of BAK fragments (residues 24–69 (α 1 helix), 70–91 (α 2 –α 3 helices), 90–150 (α 3 –α 5 helices) and 146–187 (α 6 –α 8 helices)) were isolated from BAK cDNA.
Techniques: Staining, Flow Cytometry, Western Blot, Fluorescence, Ex Vivo