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Three-dimensional biomimetic model to reconstitute sprouting lymphangiogenesis in vitro
Sudong Kim1, Minhwan Chung1, Noo Li Jeon1
1Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
Biomaterials
|December 23, 2015
Summary
A new microfluidic model closely mimics lymphangiogenesis in vivo. Interstitial flow, a mechanical cue, is crucial for regulating lymphatic vessel formation and sprouting, offering insights into development and disease.
Area of Science:
- Biomedical Engineering
- Vascular Biology
- Microfluidics
Background:
- Lymphangiogenesis, the formation of new lymphatic vessels, is vital for development, inflammation, and tumor metastasis.
- A lack of reliable in vitro models hinders detailed study of lymphangiogenesis initiation and coordination.
Purpose of the Study:
- To develop and validate a microfluidic platform for in vitro lymphangiogenesis that closely mimics the in vivo lymphatic microenvironment.
- To investigate the role of interstitial flow (IF) and other microenvironmental factors in regulating lymphatic sprouting.
Main Methods:
- Development of a microfluidic device integrating biochemical cues, interstitial flow (IF), and endothelial-stromal interactions.
- Culturing lymphatic endothelial cells within a 3D extracellular matrix in the microfluidic platform.
- Analysis of lymphatic sprout formation, structure, molecular signatures, and cellular phenotypes under controlled conditions.
Main Results:
- The microfluidic platform successfully reconstituted key aspects of in vivo lymphangiogenesis.
- Interstitial flow (IF) was identified as a central regulatory cue, influencing lymphatic endothelial cell responses and sprouting direction.
- Synergy between IF and pro-lymphangiogenic factors significantly enhanced sprouting, mimicking in vivo neovessel formation.
Conclusions:
- Orchestrated environmental factors, particularly mechanical cues like IF, are essential for robust lymphangiogenesis.
- The developed biomimetic microfluidic model provides a powerful tool for studying lymphangiogenesis and for drug screening.
