Relevance: GS-3 (Science & Tech breakthroughs) & GS-2 (Issues related to Health) | Source: The Hindu 

1. The Core Challenge: Why is there no HIV cure?

Currently, nearly 40 million people globally live with HIV. While Antiretroviral Therapy (ART) has turned HIV into a manageable chronic condition, it is not a cure.

• The Survival Mechanism: The virus hides in dormant “reservoirs” (hiding spots) in the body.
• The Rebound: If a patient stops taking daily medicine, the virus quickly wakes up from these reservoirs and attacks again.
• The Goal: Moving from lifelong daily pills to a “one-and-done” permanent cure.

2. Understanding CAR-T Cell Therapy

This is a form of Genetic Engineering that turns the patient’s own immune system into a weapon.

• Extraction: Doctors take T-cells (the immune system’s soldiers) from the patient’s blood.
• Engineering: In a lab, these cells are modified to grow special receptors called Chimeric Antigen Receptors (CARs).
• Redeployment: These supercharged cells act like a GPS tracker, finding and destroying diseased cells when infused back into the body.
• Current Use: It is already a proven, revolutionary treatment for certain blood cancers like leukemia.

3. The Breakthrough: “Armored” T-Cells for HIV

Scientists have now “tweaked” this cancer tech specifically for HIV with two new features:

• Relentless Hunting: The cells are programmed to find HIV hidden even in the body’s deepest reservoirs.
• Built-in Armor: Since HIV naturally attacks T-cells, these new cells are genetically modified to be resistant to the virus itself.
• The Results: In a small trial, two patients stayed HIV-free for over a year without taking any daily ART medication after just one dose.

4. Administrative Significance for India

India has the third-largest HIV epidemic in the world, with roughly 2.4 million people living with the virus.

• Reducing Economic Burden: A one-time cure would save the government and patients the massive cost of lifelong treatment and diagnostic tests.
• Global Targets: It helps India achieve the UNAIDS 95-95-95 targets (95% diagnosed, 95% on treatment, and 95% with viral suppression).
• Indigenous Capability: India recently approved its first homegrown CAR-T therapy for cancer (NexCAR19). This proves we have the Deep-Tech ecosystem to produce these “living drugs” domestically at a low cost.

UPSC Value Box 

• Antiretroviral Therapy (ART): The standard daily medicine used to stop HIV from multiplying in the body.
• Viral Reservoirs: Groups of cells where the virus remains “sleeping” and untouched by standard medicines.
• Genetic Engineering: The direct manipulation of an organism’s genes using biotechnology.

With reference to CAR-T Cell Therapy, recently in the news, consider the following statements:

1. It involves the genetic modification of a patient’s T-cells to target specific diseased cells.
2. While highly effective for certain blood cancers, it is inherently unsuitable for HIV because the virus specifically targets T-cells.
3. India has developed indigenous capability in CAR-T technology through the approval of NexCAR19.

Which of the statements given above is/are correct?

(a) 1 and 2 only

(b) 1 and 3 only

(c) 3 only

(d) 1, 2, and 3

Correct Answer: (b) 1 and 3 only