Three-Dimensional In Vitro Lymphangiogenesis Model in Tumor Microenvironment

Area of Science:

• Biomedical Engineering
• Developmental Biology
• Cancer Research

Background:

• Lymphangiogenesis, the formation of new lymphatic vessels, is crucial in development and disease, particularly in tumor metastasis.
• Physiologically relevant models are needed to study lymphatic vessels and understand tumor spread mechanisms.

Purpose of the Study:

• To develop a novel three-dimensional (3D) lymphangiogenesis model within a tumor microenvironment using a macrofluidic platform.
• To investigate the influence of biochemical and biomechanical cues on lymphatic vessel formation and tumor metastasis.

Main Methods:

• A newly designed macrofluidic platform was utilized to create a 3D lymphangiogenesis model.
• The model incorporated controllable biochemical and biomechanical cues.
• A tumor spheroid was integrated to create a complex tumor microenvironment model.

Main Results:

• The reconstituted lymphatic vessels exhibited in vivo-like physical and biochemical characteristics.
• The model demonstrated that biomechanical stress combined with biochemical factors promotes directional lymphatic sprouting.
• A complex tumor microenvironment model was successfully developed, revealing factors contributing to tumor metastasis.

Conclusions:

• The developed 3D model accurately mimics in vivo lymphatic vessels, offering a powerful tool for studying lymphangiogenesis.
• This novel co-culture system can advance pathological drug screening and disease modeling for cancer metastasis.