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Quantification and functional analysis of chemotaxis by laser scanning cytometry
Omar I Butt1, Padmavathy Krishnan, Sumant S Kulkarni
1Department of Internal Medicine, Division of Cardiology and Biomedical Engineering Center, The Ohio State University, Columbus, Ohio 43210, USA.
Summary
Laser scanning cytometry (LSC) offers a reliable method for assessing cell migration in chemotaxis assays. This technique accurately counts migrated cells and analyzes nuclear parameters, overcoming limitations of traditional visual counting.
Area of Science:
- Cell biology
- Immunology
- Biotechnology
Background:
- Traditional chemotaxis assays rely on inaccurate visual cell counting.
- Physiologic parameters of migrating cells are often not assessed simultaneously.
- Limitations hinder comprehensive analysis of cell migration and status.
Purpose of the Study:
- Evaluate laser scanning cytometry (LSC) for chemotaxis assays.
- Assess LSC's suitability for counting migrated cells.
- Determine LSC's capacity for concurrent analysis of cell physiologic status.
Main Methods:
- Induced THP-1 monocyte migration using chemotactic factors.
- Utilized Nuclepore filters for cell migration.
- Employed propidium iodide staining and LSC for cell analysis.
Main Results:
- Demonstrated excellent correlation between LSC and direct cell counting.
- Observed changes in nuclear compactness and morphology via LSC.
- Identified additive effects of chemotactic stimuli on nuclear parameters.
Conclusions:
- LSC provides reliable and comprehensive assessment of cell migration.
- LSC accurately quantifies migrated cell numbers and distribution.
- The method allows for extended analysis of molecular changes during chemotaxis.