How to turn genes back on, Pg16

Key Highlights:

• Scientists have developed a new CRISPR technique to turn genes back on without cutting DNA.
• The method involves removing chemical tags, confirming their role in actively silencing genes.
• This gene editing approach may offer a safer treatment for sickle cell disease by reactivating a foetal blood gene.
• Researchers at the University of New South Wales believe this technology could lead to therapies with fewer side effects.

Detailed Insights:

• The new CRISPR breakthrough addresses a long-standing debate about the mechanisms of gene silencing.
• Chemical tags, specifically methyl groups, act as molecular anchors that prevent gene expression.
• Reactivating the foetal blood gene could provide a gentler approach to treating sickle cell disease compared to existing methods.
• This technology has the potential to make gene therapy safer and more precise, reducing the risk of unintended consequences.

Scientific/Technical Concepts Involved:

• CRISPR: A gene editing technology that can be programmed to target specific stretches of genetic code at precise locations.
• DNA: Deoxyribonucleic acid, a molecule that carries the genetic instructions for all living organisms.
• Gene silencing: The regulation of gene expression to prevent a gene from producing its protein.