A tumorigenic murine Sertoli cell line that is temperature-sensitive for differentiation

Area of Science:

• Reproductive Biology
• Cell Biology
• Oncology

Background:

• Sertoli cells are crucial for germ cell development within seminiferous tubules.
• Current research is limited by scarce Sertoli cell lines and few in vivo malignancy models.

Purpose of the Study:

• To develop a tumorigenic murine Sertoli cell line for research.
• To characterize the in vitro and in vivo properties of the novel cell line.
• To establish a model for studying Sertoli cell function and malignancy.

Main Methods:

• Murine Sertoli cells were infected with simian virus 40 tsA255 to create a temperature-sensitive tumorigenic cell line (S14-1).
• S14-1 cells were analyzed for growth in soft agar, tumor formation in nude mice, and ultrastructural characteristics via electron microscopy.
• Cytogenetic analysis was performed, and gene expression (sulfated glycoprotein-2 mRNA) and protein secretion (transferrin) were assessed at different temperatures.

Main Results:

• The S14-1 Sertoli cell line demonstrated temperature-dependent growth and formed tumors in vivo.
• Electron microscopy confirmed the Sertoli cell origin of tumors, showing characteristic junctions and processes.
• At non-permissive temperatures, S14-1 cells exhibited reduced growth, increased transferrin secretion, and elevated sulfated glycoprotein-2 mRNA expression, indicating enhanced differentiation.

Conclusions:

• The S14-1 cell line provides a valuable tool for in vitro studies of Sertoli cell function.
• This model is suitable for in vivo investigations into Sertoli cell malignancy.
• The temperature-dependent behavior of S14-1 cells allows for controlled studies of differentiation and tumorigenesis.