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Updated: Jun 18, 2025
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Measuring Bone Remodeling and Recreating the Tumor-Bone Microenvironment Using Calvaria Co-culture and Histomorphometry
Published on: March 14, 2020
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Bone mineral density affects tumor growth by shaping microenvironmental heterogeneity
Matthew A Whitman1, Madhav Mantri1, Emmanuel Spanos1
1Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14850.
Biorxiv : the Preprint Server for Biology
|August 2, 2024
Summary
Bone mineral density impacts breast cancer metastasis by altering the tumor microenvironment. Its absence promotes tumor growth and changes immune cell behavior, influencing cancer progression.
Area of Science:
- Oncology
- Cell Biology
- Biomaterials
Background:
- Breast cancer bone metastasis is a major cause of mortality.
- The role of bone mineral density in tumor heterogeneity is poorly understood.
- Conventional methods struggle to isolate the effect of bone mineral density on tumor growth.
Purpose of the Study:
- To investigate how bone mineral content influences breast cancer growth and microenvironmental complexity in vivo.
- To explore the mechanisms by which bone mineral density affects tumor heterogeneity.
Main Methods:
- Utilized decellularized bone matrices (mineral-containing and mineral-free).
- Combined single-cell RNA-sequencing with engineered bone matrices.
- Studied tumor growth and microenvironmental changes in vivo.
Main Results:
- Absence of bone mineral significantly altered fibroblast and immune cell heterogeneity.
- Lack of bone mineral promoted phenotypes associated with increased tumor growth.
- Stromal response to matrix mineral content was dependent on host immunocompetence and tumor model.
Conclusions:
- Bone mineral density influences breast cancer progression by altering microenvironmental complexity.
- The effect of bone mineral on tumor growth is organism-dependent.
- Findings highlight the importance of the bone matrix in breast cancer metastasis.
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