Immortalization of human myogenic progenitor cell clone retaining multipotentiality

Area of Science:

• Cell Biology
• Regenerative Medicine
• Molecular Biology

Background:

• Human myogenic cells possess limited proliferative capacity in vitro.
• Telomerase alone can delay, but not prevent, senescence in cultured human myogenic cells.
• Immortalization strategies are crucial for expanding myogenic cells for research and therapeutic applications.

Purpose of the Study:

• To establish an immortalized human myogenic cell line that retains multipotentiality.
• To investigate the combined effect of telomerase and HPV16 E7 gene on myogenic cell immortalization.
• To provide a tool for studying human muscle disorders and developing regenerative therapies.

Main Methods:

• Ectopic expression of telomerase and human papillomavirus type 16 E7 gene in primary human myogenic cells.
• Culture and characterization of the resulting immortalized cell line.
• Assessment of the immortalized cells' differentiation potential (myogenic, osteogenic, adipogenic).

Main Results:

• Constitutive expression of telomerase and E7 successfully immortalized primary human myogenic cells.
• The immortalized cell line maintained phenotypic characteristics of the parent cells.
• Cells demonstrated multipotentiality, differentiating into myogenic, osteogenic, and adipogenic lineages.

Conclusions:

• Combined expression of telomerase and E7 provides an effective method for immortalizing human myogenic cells.
• The established immortalized cell line preserves multipotency and differentiation capacity.
• This approach offers a valuable tool for in vitro expansion of human myogenic cells for research on muscle disorders.