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Three-dimensional endothelial-tumor epithelial cell interactions in human cervical cancers
V Chopra1, T V Dinh, E V Hannigan
1Department of Obstetrics and Gynecology, University of Texas Medical Branch at Galveston 77555-0587, USA.
In Vitro Cellular & Developmental Biology. Animal
|June 1, 1997
Summary
This study developed a 3-D multicellular culture model using tumor epithelial cells (TEC) and human umbilical vein endothelial cells (HUVEC) in a rotating wall vessel. This innovative in vitro system promotes accelerated cell proliferation and the formation of tumor-like structures, aiding angiogenesis research.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Oncology
Background:
- Understanding tumor epithelial cell (TEC) and human umbilical vein endothelial cell (HUVEC) interactions is crucial for cancer research.
- Developing effective in vitro models for studying these multicellular interactions is a significant challenge.
Purpose of the Study:
- To establish and characterize a novel in vitro three-dimensional (3-D) multicellular culture system for TEC and HUVEC.
- To investigate the proliferative capacity and aggregate formation of TEC and HUVEC in a rotating wall vessel (RWV) system.
- To explore the potential of this model for studying tumor angiogenesis.
Main Methods:
- Establishment of cervical tumor epithelial cell lines (n=6) and HUVEC lines (n=2).
- Culture of cells as 3-D multicellular aggregates using Cytodex-3 microcarrier beads in a rotating wall vessel (RWV) for 240 hours.
- Analysis of cell proliferation, aggregate size and number, differentiation, and metabolic activity using phase contrast microscopy and trypan blue exclusion.
Main Results:
- Exponential proliferation of TEC and HUVEC in 3-D RWV cultures, significantly exceeding 2-D culture yields.
- Formation of 3-D aggregates (0.5-5 mm) that increased in size and cell mass over time due to cell merging.
- Cocultures exhibited accelerated proliferation and the formation of tubular structures penetrating tumor masses, indicating enhanced angiogenesis.
- Cells remained viable and metabolically active throughout the 240-hour incubation period.
Conclusions:
- The rotating wall vessel (RWV) provides a robust 3-D in vitro model for studying TEC-HUVEC multicellular interactions.
- This model supports enhanced cell proliferation, aggregate formation, and the development of tumor angiogenesis-like structures.
- The developed system is valuable for investigating regulatory factors governing tumor angiogenesis and for potential therapeutic target identification.