AutoBlot: deterministic single-cell western blotting reveals proteomic diversity in rare cell populations

Authors

Deroy, C., Islam, M. N., Goldhammer, N., Jiang, L., Rosenbluth, J. M., Herr, A. E.

Abstract

Single-cell western blotting (scWB) provides quantitative, molecular-mass-resolved protein measurements but relies on Poisson-limited gravity settling, requiring ~10 starting cells with <37% microwell occupancy. AutoBlot replaces stochastic loading with piezoelectric dispensing, achieving ~98% occupancy and deterministic cell-bead co-isolation from as few as 10,000 starting cells. Profiling patient-derived breast organoids (PDOs), we detect BRCA1-associated proteomic shifts, menopausal-status-dependent ER expression differences, and systematic differences between surface and intracellular lineage classification of mammary epithelial cells in organoid culture.

Preprint server: bioRxiv
The authors list and abstract were imported from bioRxiv on 24 Jun 2026.

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