Gene silencing

Definition

Gene silencing is a regulatory mechanism by which a gene's expression is inhibited. This can occur at the transcriptional or post-transcriptional level and is crucial in various genetic engineering applications.

5 Must Know Facts For Your Next Test

1. Gene silencing can be achieved through RNA interference (RNAi) mechanisms, including siRNA and miRNA pathways.
2. Transcriptional gene silencing involves modifications to chromatin structure, such as DNA methylation and histone modification.
3. Post-transcriptional gene silencing primarily involves the degradation of mRNA or inhibition of translation.
4. Gene silencing techniques are used in pharmaceutical research to study gene function and develop therapies for diseases like cancer and viral infections.
5. CRISPR-Cas systems can also be employed for targeted gene silencing by disrupting specific DNA sequences.

Related terms

RNA Interference (RNAi): A biological process where RNA molecules inhibit gene expression, typically by causing the destruction of specific mRNA molecules.

Transcriptional Gene Silencing: The regulation of gene expression at the level of transcription through modifications like DNA methylation.

CRISPR-Cas System: A genome editing technology that can be used to silence genes by introducing targeted breaks in DNA.