What is gene therapy and its applications?

Gene therapy is a medical technique that involves modifying or replacing defective genes to treat or prevent diseases. Instead of managing symptoms, it targets the root genetic cause of a disorder.

The process typically involves delivering a functional gene into a patient’s cells using a vector, often a modified virus. This new gene either replaces the faulty one, inactivates it, or introduces a new function to help the body fight disease.

There are two main types:

• Somatic gene therapy: targets body cells; effects are not inherited

• Germline gene therapy: targets reproductive cells; changes are heritable (currently restricted due to ethical concerns)

Applications of gene therapy include:

• Genetic disorders: such as cystic fibrosis, hemophilia, and sickle cell anemia

• Cancer treatment: modifying immune cells to recognize and destroy cancer cells (e.g., CAR-T therapy)

• Infectious diseases: enhancing the body’s ability to fight infections

Gene therapy is still developing, with ongoing research focused on improving safety, delivery methods, and long-term effectiveness.

Overall, gene therapy represents a significant advancement in modern medicine by offering targeted and potentially permanent treatments.