Journal: iScience
Article Title: Analyzed PD-L1-positive subpopulations by dual-labeling TSA-IF-FISH predicts immunotherapy efficacy in advanced lung cancer
doi: 10.1016/j.isci.2025.114357
Figure Lengend Snippet: Construction of IF + FISH detection method by TSA IF + FISH detection system was constructed by using anti-linear antigen HER2 antibody and the TSA method before or after denaturation on SKBR3. Centromeric probes of chromosome 10q22.3 (yellow), 10cen (blue), and chromosome 3p22.1 (red) and 3q29 (green) were used for FISH detection. Results demonstrated that cells maintained a remarkable detection signal even after denaturation when using TSA-488 (test with HRP labeled anti HER2 antibody), TSA-568 (test with HRP labeled anti-EpCAM antibody), and TSA-594 (test with HRP labeled anti pan CK antibody) (A) Overcoming Antigen Degradation in IF-FISH Assays through Tyramide Signal Amplification (TSA). (B) Application of TSA-IF-FISH for Enhanced Detection of HER2, EpCAM, and CK and Chromosomal Abnormalities in Circulating Tumor Cells. Bars: 8 μm. HER2, Human epidermal growth factor receptor 2; EpCAM, Epithelial cell adhesion molecule.
Article Snippet: Alexa Fluor 488–conjugated anti-HER2 antibody , Santa Cruz Biotechnology , sc-7301 AF488.
Techniques: Construct, Labeling, Amplification