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Published on: September 15, 2017
An assay for macrophage-mediated regulation of endothelial cell proliferation
Aslam Ali Khan1, Rajendra S Apte
1Ophthalmology and Visual Sciences and Developmental Biology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8096, St. Louis, MO 63110, USA.
Abstract:
We have developed an assay that quantifies the potential of macrophages to regulate proliferation of endothelial cells. We show that young mice macrophages can be distinguished from old mice macrophages by their ability to inhibit vascular endothelial cell proliferation. While young mice macrophages robustly inhibit proliferation, old mice macrophages fail to do so and actually promote the proliferation of endothelial cells. In this report, we outline a technique that directly assesses the effect of macrophages on modulation of endothelial cell proliferation. This assay will help us in understanding the mechanisms of macrophage function in several disease states characterized by abnormal angiogenesis including cancers, angiogenic eye disease and atherosclerotic heart disease.
Insights
Macrophages from young mice inhibit endothelial cell proliferation, while those from old mice promote it. This assay distinguishes macrophage function based on age, aiding research into angiogenesis-related diseases.
Area of Science:
- Immunology
- Cell Biology
- Vascular Biology
Background:
- Macrophages play a critical role in regulating tissue repair and disease.
- Age-related changes in macrophage function can impact vascular health and angiogenesis.
- Understanding macrophage-mediated control of endothelial cell proliferation is crucial for disease research.
Purpose of the Study:
- To develop and validate an assay quantifying macrophage-mediated regulation of endothelial cell proliferation.
- To investigate age-dependent differences in macrophage function related to vascular endothelial cells.
- To provide a tool for studying macrophage roles in diseases involving abnormal angiogenesis.
Main Methods:
- Development of a novel assay to measure the effect of macrophages on endothelial cell proliferation.
- Comparative analysis of macrophages isolated from young versus old mice.
- Quantification of endothelial cell proliferation in response to macrophage co-culture.
Main Results:
- Macrophages from young mice significantly inhibit endothelial cell proliferation.
- Macrophages from old mice fail to inhibit proliferation and instead promote endothelial cell growth.
- The developed assay effectively distinguishes age-related functional differences in macrophages.
Conclusions:
- Macrophage function in regulating endothelial cell proliferation is age-dependent.
- This assay provides a valuable method for assessing macrophage-endothelial cell interactions.
- Findings have implications for understanding and treating angiogenesis-related diseases like cancer and atherosclerosis.
