Direct Reprogramming in Bone and Joint Degenerative Diseases: Applications, Obstacles and Directions

Area of Science:

• Regenerative Medicine
• Cellular Reprogramming
• Orthopedics

Background:

• Aging populations worldwide face increasing bone and joint degenerative diseases, including osteoarthritis, osteoporosis-related fractures, and intervertebral disc degeneration.
• Current treatments like medication and surgery have limitations, including potential for drug abuse and loss of function.
• Direct reprogramming presents a promising alternative to traditional therapies for these conditions.

Approach:

• This review summarizes direct reprogramming strategies for bone and joint degenerative diseases.
• Direct reprogramming converts somatic cells directly into target cells without a pluripotent intermediate stage.
• Focus is on applications in osteoarthritis, osteoporosis-related fracture, and intervertebral disc degeneration.

Key Points:

• Challenges remain, including identifying precise transcription factors, optimizing the extracellular microenvironment, and developing efficient in vivo delivery systems.
• Future directions involve investigating transient genome regulation, metabolic conversion, and cellular skeleton dynamics.
• The ultimate goal is to provide target cells for in situ repair and tissue reconstruction.

Conclusions:

• Direct reprogramming offers a revolutionary approach to cell therapy and tissue regeneration for bone and joint degenerative diseases.
• This technology holds significant potential for in situ repair and reconstruction, representing a breakthrough in regenerative medicine.
• Advances in direct reprogramming open new avenues for therapeutic strategies in treating age-related musculoskeletal conditions.