An Efficient Method for Extracting Human Fallopian Tube Epithelia for Single-cell Analyses.

Human fallopian tubes are intrinsic to reproduction. The purpose of the fallopian tubes is to allow for the transit of sperm, the ovum, and if fertilization is successful, the embryo. The epithelial cells that line the inner surface of fallopian tubes are integral to both normal and abnormal fallopian tube processes, including disease initiation. After menopause, fallopian tubes cease to have a significant role in the body and the intraepithelial cell makeup changes. We describe a method in which these epithelial cells can be isolated from fresh fallopian tubes with minimal stromal cell contamination into a single-cell suspension. These cells can be grown in culture or used for further analysis such as flow cytometry and single-cell RNA sequencing. This isolation protocol can be achieved in 4-6 h and yields viable cells that can be used for immediate downstream analysis. This efficient protocol facilitates the isolation of fallopian tube epithelial cells with an enriched epithelial population.