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Updated: Apr 12, 2026
Technique for Isolation and Culture of Rat Jaw Bone Marrow Mesenchymal Stem Cells
Published on: May 31, 2024
[Isolation and Biological Characteristics of Rabbit Bone Marrow Plug-derived Mesenchymal Stem Cells]
Hao Zhang1,2, Wei-Xiong Liao1, Ji Li1
1Department of Orthopedics, Sport Medicine Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
Objective:
Though the rabbit is one of most widely used experimental animals for medical regenerative research, it remains difficult to culture mesenchymal stem cells (MSC) on a in large scale due to the extremely lower number and hematopoietic cell contamination. This study was aimed to establish a novel protocol to generate rabbit MSC by culturing bone marrow plugs instead of bone marrow cells so as to obtain a large amount of MSC with higher proliferation and self-renewal properties.
Methods:
The primary MSC were generated from collagenase digested bone marrow plugs and bone marrow cells, respectively. The surface antigen profile of MSC was analyzed with flow cytometry and the cells were induced to differentiate into osteoblasts and adipocytes. The proliferation capacity of MSC were assessed by CCK-8 method. To test their self-renewal property, the colony forming unit-fibroblast assay was performed. Moreover, the cell yields of passage 1, 2, 3 and 4 were calculated.
Results:
The bone marrow plug-derived MSC shared the typical fibroblast-like morphology same as bone marrow cells derived MSC. Moreover, the ratio of CD45 positive hematopoietic cells in bone marrow plug-derived MSCs was significantly lower than that of bone marrow cell-derived MSC. The results of multi-differentiation experiments showed that bone marrow-plug-derived MSC exhibited similar multi-potent property to their bone marrow counterparts. In addition, the results of CCK-8 and CFU-F assay demonstrated that bone marrow plug-derived MSC grew more robustly and more CFU-F were formed in the culture plates, which indicated that the cells possessed higher proliferation and self-renewal capacities. Promisingly, a larger amount of cells were harvested via using the new protocol.
Conclusion:
The purity and yields of the bone marrow plug-derived MSC are satisfactory compared with previous rabbit MSC isolation methods. The findings may be helpful for the research of regenerative medicine.
Insights
A new method using rabbit bone marrow plugs yields more pure mesenchymal stem cells (MSCs) with better proliferation and self-renewal for regenerative medicine. This approach overcomes limitations of traditional bone marrow cell cultures.
Area of Science:
- Stem cell biology
- Regenerative medicine
- Animal models in research
Background:
- Rabbit mesenchymal stem cells (MSCs) are crucial for regenerative medicine.
- Current methods face challenges with low cell numbers and hematopoietic contamination.
- Large-scale MSC culture is difficult in rabbits.
Purpose of the Study:
- To develop a novel protocol for generating rabbit MSCs.
- To improve MSC yield, proliferation, and self-renewal properties.
- To reduce hematopoietic cell contamination in rabbit MSC cultures.
Main Methods:
- Culturing collagenase-digested bone marrow plugs versus bone marrow cells.
- Analyzing surface antigen profiles via flow cytometry.
- Assessing multi-differentiation into osteoblasts and adipocytes.
- Evaluating proliferation (CCK-8) and self-renewal (CFU-F assays).
Main Results:
- Bone marrow plug-derived MSCs showed fibroblast-like morphology.
- Significantly lower CD45+ hematopoietic cell contamination was observed.
- Similar multi-potent differentiation capacity compared to bone marrow-derived MSCs.
- Higher proliferation and self-renewal capacities were confirmed by CCK-8 and CFU-F assays.
- Increased cell yields were obtained using the bone marrow plug method.
Conclusions:
- The bone marrow plug method provides higher purity and yield of rabbit MSCs.
- This novel protocol is advantageous over existing rabbit MSC isolation techniques.
- The findings support the advancement of regenerative medicine research using rabbits.
