Single-Cell Immunoblotting Resolves Estrogen Receptor-α Isoforms in Breast Cancer

To scrutinize hormone response heterogeneity among breast cancer (BCa) tumor cells, scientists developed a precision tool to specifically measure estrogen receptor alpha (ER-α)-66, ER-α46, and eight ER-signaling proteins with single-cell resolution in the highly hetero-clonal MCF-7 BCa cell line.