Int J Oral Biol.  2022 Jun;47(2):17-24. 10.11620/IJOB.2022.47.2.17.

Analysis of the global gene expression profiles in genomic instability-induced cervical cancer cells

• Oh JM

• KMID: 2530746
• DOI: http://doi.org/10.11620/IJOB.2022.47.2.17

Abstract

Preserving intact genetic material and delivering it to the next generation are the most significant tasks of living organisms. The integrity of DNA sequences is under constant threat from endogenous and exogenous factors. The accumulation of damaged or incompletely-repaired DNA can cause serious problems in cells, including cell death or cancer development. Various DNA damage detection systems and repair mechanisms have evolved at the cellular level. Although the mechanisms of these responses have been extensively studied, the global RNA expression profiles associated with genomic instability are not well-known. To detect global gene expression changes under different DNA damage and hypoxic conditions, we performed RNA-seq after treating human cervical cancer cells with ionizing radiation (IR), hydroxyurea, mitomycin C (MMC), or 1% O₂ (hypoxia). Results showed that the expression of 184–1037 genes was altered by each stimulus. We found that the expression of 51 genes changed under IR, MMC, and hypoxia. These findings revealed damage-specific genes that varied differently according to each stimulus and common genes that are universally altered in genetic instability.

Keyword

Genomic instability; Genomic instability; DNA damage; DNA damage; Hypoxia; Hypoxia; Uterine cervical neoplasms; Uterine cervical neoplasms