Sickle Cell Disease Genetics and Treatment Insights

Sickle cell disease is a genetic disorder affecting red blood cells, causing them to become rigid and sickle-shaped, leading to various health complications. Current treatments include hydroxyurea, pain relievers, and blood transfusions, but they have limitations. Gene therapy offers a potential cure by addressing the genetic cause, focusing on hemoglobin production. It involves using vectors to deliver therapeutic genes into stem cells. Gene editing is another approach that corrects the faulty gene directly. The video provides resources for further information on gene therapy for sickle cell disease.

What is the primary genetic cause of sickle cell disease?

• A faulty alpha-globin gene

• A deficiency in red blood cell production

• A faulty beta-globin gene

• A mutation in the hemoglobin A gene

Which of the following is NOT a complication of sickle cell disease?

• Infections

• Organ damage

• Increased flexibility of red blood cells

• Stroke

What is the role of hydroxyurea in managing sickle cell disease?

• It cures the disease completely

• It helps manage symptoms

• It increases the production of sickle hemoglobin

• It eliminates the need for blood transfusions

How does gene therapy aim to treat sickle cell disease?

• By increasing the production of sickle hemoglobin

• By removing all red blood cells

• By addressing the genetic cause of the disease

• By eliminating the need for hospital visits

Which type of hemoglobin is produced during infancy in most people?

• Beta-globin hemoglobin

• Adult hemoglobin

• Sickle hemoglobin

• Fetal hemoglobin

What is the function of hematopoietic stem cells (HSCs) in gene therapy?

• To produce sickle hemoglobin

• To eliminate the need for blood transfusions

• To turn into any type of blood cells needed

• To increase the production of adult hemoglobin

What is the purpose of using vectors in gene therapy?

• To increase the production of sickle hemoglobin

• To deliver new genes into cells

• To remove faulty genes from the body

• To cure the disease instantly

What is the role of chemotherapy in the gene therapy process for sickle cell disease?

• To deliver new genes into cells

• To cure the disease instantly

• To eliminate existing stem cells carrying the faulty gene

• To increase the production of sickle hemoglobin

What is the purpose of removing the harmful letter from the virus envelope in gene therapy?

• To increase the effectiveness of the virus

• To prevent the virus from causing illness

• To ensure the virus can replicate

• To make the virus more harmful

What is the main difference between gene therapy and gene editing?

• Gene editing is less precise than gene therapy

• Gene therapy adds a new gene, while gene editing corrects the faulty gene

• Gene therapy is more effective than gene editing

• Gene editing adds a new gene, while gene therapy corrects the faulty gene