A sequential methodology that allows apoptotic cell sorting and FISH analysis in human testicular cells.

Area of Science:

• Reproductive Biology
• Cell Biology
• Genetics

Background:

• Apoptosis plays a crucial role in male fertility and germ cell development.
• Understanding the relationship between apoptosis and chromosomal abnormalities in testicular cells is vital for reproductive health research.

Purpose of the Study:

• To establish a robust methodology for isolating and analyzing apoptotic cells from human testicular tissue.
• To enable subsequent cytogenetic analysis of these isolated apoptotic cells using fluorescence in situ hybridization (FISH).

Main Methods:

• Enzymatic disaggregation of testicular tissue followed by specific staining for apoptotic cells.
• Cell sorting using flow cytometry to isolate apoptotic and viable cell populations.
• Paraformaldehyde fixation and pre-FISH treatments for optimal hybridization.

Main Results:

• The methodology achieved high cell viability (>72%) and efficient isolation of apoptotic populations (62%-100% purity).
• FISH hybridization frequencies exceeded 98% after optimized sample preparation.
• All spermatogenic stages and Sertoli cells were identifiable in the selected fractions.

Conclusions:

• The developed methodology successfully prepares viable testicular cell suspensions for efficient apoptotic cell selection and cytogenetic analysis.
• This technique provides a powerful tool to investigate the potential link between chromosome anomalies and apoptosis in human testicular cells.