The basic concept of the read-write genome: Mini-review on cell-mediated DNA modification

Area of Science:

• Genetics
• Molecular Biology
• Evolutionary Biology

Background:

• The genome is a DNA database encoding RNA and protein sequences.
• Cells possess natural genetic engineering (NGE) tools for genome modification.
• Mobile DNA elements act as adaptable genetic modules.

Purpose of the Study:

• To explore the concept of natural genetic engineering (NGE) within cellular systems.
• To investigate the mechanisms and implications of NGE in genome modification.
• To assess the adaptive potential of NGE activities.

Main Methods:

• Analysis of sequence databases for evolutionary evidence of NGE.
• Examination of experimental studies demonstrating NGE in real-time.
• Review of molecular mechanisms regulating cellular NGE activities.

Main Results:

• NGE has been recurrent in evolutionary history, evidenced by protein domain swapping and network rewiring.
• Cancer cells and experimental studies offer contemporary examples of NGE.
• Cells utilize sophisticated molecular mechanisms to regulate NGE.

Conclusions:

• NGE is an inherent cellular capability for genome modification.
• Evidence suggests NGE plays a significant role in evolution and cellular processes.
• Further experimental validation is needed to confirm the adaptive nature of NGE.