Chromosomal aberrations in muntjac cells resulting from exposure to interferon

Area of Science:

• Cytogenetics
• Virology
• Mammalian Cell Biology

Background:

• Human beta-interferon (beta-IFN) exhibits antiviral and antiproliferative effects.
• Indian deer (Muntiacus muntjac) cells possess a low diploid chromosome number and easily identifiable chromosomes.
• These characteristics make Indian deer cells a suitable model for studying interferon-induced chromosomal abnormalities.

Purpose of the Study:

• To investigate the potential of human beta-interferon (beta-IFN) to induce chromosomal abnormalities in Indian deer cells.
• To determine the dose-dependent effects of beta-IFN on chromosome structure and integrity.

Main Methods:

• Indian deer cells were exposed to varying concentrations of human beta-interferon (beta-IFN).
• Chromosomal analysis was performed after 72 hours of treatment to identify and quantify abnormalities.
• Statistical analysis was used to compare aberration frequencies and distributions.

Main Results:

• Treatment with 100 U/ml beta-IFN for 72 hours led to increased frequencies of chromosome gaps and breaks.
• At 10-100 U/ml, a non-random distribution of aberrations was observed, with a higher proportion affecting the X chromosome.
• Higher beta-IFN concentrations (1,000-1,700 U/ml) resulted in an increased proportion of cells with multiple abnormalities, and aberration distribution became random.

Conclusions:

• Human beta-interferon (beta-IFN) induces chromosomal abnormalities in Indian deer cells.
• The pattern of chromosomal aberrations is dependent on the concentration of beta-IFN.
• Indian deer cells serve as a valuable model for studying the cytogenetic effects of interferon.