Regional Gene Therapy for Bone Tissue Engineering: A Current Concepts Review.

Area of Science:

• Orthopedic Surgery
• Tissue Engineering
• Regenerative Medicine

Background:

• Segmental bone defects pose significant challenges in orthopedic surgery.
• Current treatments like bone grafting have limitations in efficacy, morbidity, and cost.
• Regional gene therapy presents a novel tissue engineering strategy for bone repair.

Purpose of the Study:

• To review current management strategies for segmental bone loss.
• To highlight regional gene therapy as a tissue engineering approach for bone repair.
• To focus on suitable cell types and sources for cell-based gene therapy.

Main Methods:

• Review of existing literature on bone defect management.
• Analysis of regional gene therapy applications in bone repair.
• Evaluation of different cell types, particularly mesenchymal stem cells (MSCs), for gene delivery.

Main Results:

• Mesenchymal stem cells (MSCs) are osteoprogenitor cells and effective vehicles for transgene delivery.
• MSCs exhibit immunomodulatory properties, enabling allogeneic 'off-the-shelf' gene therapy products.
• Various cell sources (bone marrow, adipose, muscle, umbilical cord) can provide MSCs.

Conclusions:

• Identifying optimal cell types is crucial for the clinical translation of cell-based gene therapy.
• Regional gene therapy, utilizing suitable cell sources like MSCs, shows significant potential for treating segmental bone defects.
• Further research into cell selection and delivery methods is warranted for successful clinical application.