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Updated: Jun 4, 2025
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A Three-dimensional Tissue Culture Model to Study Primary Human Bone Marrow and its Malignancies
Published on: March 8, 2014
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Reduced elastin in multiple myeloma niche promotes cell proliferation
Mozayan Zoabi1, Elina Orbuch1, Oded Komemi1
1Oncogenetics Laboratory, Meir Medical Center, Tchernichovsky St 59, Kfar Saba, Israel; Faculty of Medical and Health Sciences, Tel Aviv University, PO Box 39040, Tel Aviv, Tel Aviv, Israel.
Experimental Cell Research
|December 26, 2024
Summary
Elastin (ELN) is significantly decreased in the bone marrow microenvironment of multiple myeloma (MM) patients. Supplementing ELN suppresses MM cell growth and abrogates the pro-MM effect of MM-derived extracellular matrix.
Area of Science:
- Oncology
- Biochemistry
- Cell Biology
Background:
- Multiple myeloma (MM) malignant plasma cells thrive in the bone marrow (BM) microenvironment, where interactions promote disease progression and drug resistance.
- Bone marrow mesenchymal stem cells (BM-MSCs) and their extracellular matrix (ECM) play a crucial role in MM pathogenesis.
- Previous studies indicated a pro-MM effect of ECM derived from MM-MSCs compared to normal donor (ND)-MSCs.
Purpose of the Study:
- To investigate the compositional differences in ECM from MM-MSCs versus ND-MSCs, focusing on elastin (ELN).
- To determine the functional role of ELN in MM cell lines and BM-MSCs.
- To evaluate the therapeutic potential of ELN in the context of MM.
Main Methods:
- Proteomic analysis of ECM isolated from MM-MSCs and ND-MSCs.
- Culture of MM cell lines (MM1S, RPMI-8226) and BM-MSCs with and without ELN supplementation.
- Assessment of cell proliferation, viability, and adhesion.
- Evaluation of ELN's effect on MM-MSC ECM-mediated pro-MM effects.
Main Results:
- Proteomics revealed significantly lower ELN levels in MM-MSC ECM compared to ND-MSC ECM.
- ELN supplementation reduced MM cell viability and increased their adhesion.
- ELN decreased proliferation of MM-MSCs but not ND-MSCs.
- ELN addition to MM-MSC ECM neutralized its pro-MM effect on MM cell proliferation.
Conclusions:
- Elastin (ELN) exhibits a suppressive role in multiple myeloma.
- ELN's reduced presence in the MM bone marrow microenvironment may contribute to disease progression.
- ELN holds potential as a diagnostic marker and therapeutic agent for multiple myeloma.
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