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Updated: May 11, 2026
Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting
Published on: May 1, 2015
Two-Step Positive Selection Method for the Magnetic Isolation of Lymphatic Endothelial Cells
Heidi A Creed1, Saranya Kannan1, Joseph M Rutkowski2
1Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA.
Insights
Researchers developed a new method to isolate rare lymphatic endothelial cells (LECs) from tissues using dual antibody markers and magnetic beads. This technique improves cell purity for various downstream analyses, advancing studies in tissue homeostasis and disease.
Area of Science:
- Cell Biology
- Immunology
- Molecular Biology
Background:
- Next-generation sequencing drives interest in rare cell populations for understanding health and disease.
- Lymphatic endothelial cells (LECs) are crucial for tissue homeostasis and immune function but are difficult to isolate due to low numbers and shared markers with other cell types.
- Current whole tissue isolation methods often yield insufficient LEC populations for detailed study.
Purpose of the Study:
- To describe a novel protocol for isolating viable rare cell populations, specifically lymphatic endothelial cells (LECs), from tissues.
- To enhance the purity of isolated LECs for downstream molecular and cellular analyses.
- To provide a versatile method applicable to other rare cell types requiring dual marker isolation.
Main Methods:
- A dual antibody marker, magnet-based isolation technique was developed.
- The protocol utilizes specific molecular markers to distinguish rare LECs from other stromal and blood endothelial cells.
- The method is designed for isolating viable cells suitable for various downstream applications.
Main Results:
- The described protocol successfully isolates viable rare cell populations, including bona fide lymphatic endothelial cells (LECs).
- The dual antibody marker approach enhances cell population purity compared to conventional methods.
- The method is adaptable for isolating other cell types where high purity is critical.
Conclusions:
- This magnet-based isolation protocol provides an effective strategy for obtaining pure populations of rare cells like LECs.
- The improved purity facilitates downstream applications such as single-cell RNA sequencing, qRT-PCR, and flow cytometry.
- This technique advances the study of LECs' roles in physiological and pathophysiological processes.
Abstract:
With the advent of next-generation sequencing technologies, there is an increased interest in identifying and isolating rare cell populations to understand their roles in homeostatic and pathophysiological states. Lymphatic vessels exist in nearly all vascularized tissues and have become increasingly appreciated as physiological and biological mediators of tissue homeostasis and immune function. Lymphatics, and the lymphatic endothelial cells (LECs) that make up these vessels, are low in number compared to blood endothelial cells and other stromal cell types and share surface markers with these cells. Whole tissue cell isolation therefore often fails to enrich a sufficient population of LECs to study their cellular responses. A combination of molecular markers can help to distinguish these rare LEC populations from other cell types. In this protocol, we describe a dual antibody marker magnet-based isolation method, suitable for isolating viable rare cell populations and isolating bona fide LECs from tissues. The protocol can also be coopted for other cell types best isolated with dual markers for any downstream applications in which cell population purity is a concern such as single-cell RNA sequencing, RNA sequencing, qRT-PCR, western blot, or flow cytometry.
