Nei-like DNA glycosylase (NEIL) 抑制因子

Nei-like DNA glycosylases (NEIL) are a family of enzymes crucial in the base excision repair (BER) pathway, responsible for identifying and removing oxidatively damaged bases from DNA. These enzymes are integral to maintaining genomic stability, particularly in response to oxidative stress. NEIL glycosylases recognize specific types of oxidative lesions, such as thymine glycol, formamidopyrimidines, and other oxidized pyrimidines. Once the damaged base is excised, NEIL enzymes facilitate the subsequent steps of the repair process, including incision of the DNA backbone and the filling and sealing of the gap. The proper functioning of NEIL glycosylases is vital for preventing mutations and maintaining cellular integrity, especially in rapidly dividing cells and in environments with high oxidative stress.

Targeting Nei-like DNA glycosylases for disruption or inhibition is a focus of research, particularly in understanding the mechanisms of DNA damage and repair. Inhibiting these enzymes can lead to an accumulation of oxidative DNA lesions, increasing genomic instability. This strategy has implications for studying the cellular responses to oxidative stress and DNA damage, and for exploring the pathways involved in carcinogenesis and aging. However, the specific targeting of NEIL glycosylases is complex, as it requires a nuanced understanding of their substrate specificity and repair mechanisms. The development of small molecule inhibitors or other modulatory compounds that can selectively inhibit NEIL glycosylases remains a challenging area, offering insights into DNA repair processes and the cellular adaptation to oxidative damage.