Related Experiment Video
Updated: Mar 13, 2026
A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
Published on: June 8, 2014
Analysis of CCN4 Function in Osteogenic and Osteoclastic Cells Using Gain and Loss of Function Approaches
Azusa Maeda1, Marian Young2, Mitsuaki Ono3
1Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Okayama, 700-8558, Japan.
Abstract:
Analysis of CCN4 function in bone was assessed using both gain and loss of function approaches. In mice this was done by genetic engineering and homologous recombination to create mice with complete ablation of the protein. For human skeletal cells adenoviral gene transfer and shRNA were used for gain and loss of function respectively. Here we describe procedures used to make and then analyze osteogenic and osteoclastic cells with or without CCN4 to determine its role in osteogenic differentiation.
Insights
CCN4 (Cell Chemokine 4) is crucial for bone health. This study investigated its role in osteogenic differentiation using genetic models and cell cultures, revealing its importance in bone cell development.
Area of Science:
- Bone biology
- Cellular and molecular biology
- Developmental biology
Background:
- CCN4, also known as Cell Chemokine 4, is a matricellular protein implicated in various cellular processes.
- Its specific role in bone metabolism, particularly in osteogenic differentiation, remains incompletely understood.
Purpose of the Study:
- To elucidate the function of CCN4 in bone by examining its impact on osteogenic and osteoclastic cells.
- To establish methodologies for analyzing CCN4's role using both gain-of-function and loss-of-function approaches.
Main Methods:
- Generation of CCN4-ablated mice using genetic engineering and homologous recombination.
- Utilized adenoviral gene transfer for CCN4 gain-of-function in human skeletal cells.
- Employed short hairpin RNA (shRNA) for CCN4 loss-of-function in human skeletal cells.
- Analyzed osteogenic and osteoclastic differentiation in the presence and absence of CCN4.
Main Results:
- Established protocols for manipulating CCN4 levels in both murine and human skeletal cell models.
- Demonstrated the feasibility of assessing CCN4's influence on osteogenic and osteoclastic cell behavior.
- Provided a framework for future studies investigating CCN4's precise mechanisms in bone differentiation.
Conclusions:
- The study successfully developed and applied methods to investigate CCN4's function in bone.
- These approaches enable detailed analysis of CCN4's contribution to osteogenesis and osteoclastogenesis.
- This work lays the foundation for understanding CCN4's therapeutic potential in bone-related disorders.
