The genetically engineered viruses can help fight. Against cancer and other diseases.

"Researchers found a hidden signal that makes T cells shut down during cancer fights. Turning off this signal reawakens the cells and helps them attack tumors more effectively. Credit: Shutterstock" (ScitechDaily, Reviving Exhausted T Cells Sparks Powerful Cancer Tumor Elimination)

A vaccine is one of the applications of genetic engineering. The vaccine trains the immune system to search for and destroy harmful cells. But reprogramming the immune cells. Can give a possibility. To fight against things like cancer and Alzheimer. The problem with those things is this. The immune system will not, for some reason, recognize the plague and abnormal cells. If the immune system recognizes the plague that forms between neurons and cells that are turning into zombie cells, it can remove cancer cells and plague from the body before they can cause damage. 

One of the reasons why the T-cells don’t recognize those harmful things in the body is simple. Those cells are exhausted. The T-cell is the thing that marks tissue for destruction, and one way to boost that effect is to revive those exhausted cells. Another version would be to program the cancer cell or bacteria to produce antigens that can call macrophages to destroy them. This thing can transform entire chemotherapy. 

The mechanism that revives exhausted T-cells can be based on nanotechnology, where certain nutrients are equipped with a carrier antigen. That carrier antigen can transfer nutrients precisely to the T-cells. Or in another version, the nanotechnical nutrients can also cause mitochondria to divide in the T-cell. That increases their energy production. The genetically engineered viruses can also teach or program those T-cells to locate the plaques that form in Alzheimer’s. 

"Antibiotic resistance is one of the most pressing challenges to global public health as harmful microbes evolve to evade these medications." (Phys.org, 'Trained' bacteriophages expand treatment options for antibiotic-resistant infections")

Trained or reprogrammed bacteriophages can boost. Antibiotic-resistant infection treatment. 

When researchers manipulate the virus DNA. Or RNA, they train viruses. Trained bacteriophages can replace antibiotics in many diseases. Or actually, trained viruses. Can have unlimited abilities in biotechnology and genetic engineering. The idea of using genetically engineered viruses. Destroying unwanted cells is not new. In the early 1990s. In nature. Bacteriophage viruses kill bacteria. Those viruses are specialized to infect bacteria. This makes those viruses interesting. They can be used to destroy dangerous bacteria. The virus therapy means that an artificial virus carries the wanted genome to the cells that the researcher wants to transform. 

The viruses can transform one cell into another. And that can be used to create artificial neurons.  Those neurons can be used in some medical tests. But it's possible to use viruses to transform things like muscle cells into neurons. The virus must only remove the original DNA from the cell. And then inject the new DNA into those cells. Artificial neurons can be used to restore neural damage. 

The feared HIV viruses are one version of bacteriophages. Those viruses can infect immune cells. 

There were some ideas to use engineered HIV viruses to destroy leukemia cells. The genetic engineering was not very advanced at that time. But modern nanotechnology. With the high-power microscopes and artificial intelligence. Make it possible to create viruses. That attack precisely targeted cells. 

The genetically engineered viruses can also reprogram cells. They can order cells to destroy their own DNA. And then replace it. By using the DNA that is stored in those viruses. The fact is that the nanomachines can also carry the artificial DNA. Into wanted cells. And that thing can make it possible. To transform cancer cells into normal cells, or make them produce the cancer-killing viruses. The cancer-killing virus can simply order those cells to make suicide. 

The virus must only carry the genetic code that orders those cells to shut down their energy production. Or it can make the cell organelles. Produce some acid that breaks the cell’s shell or its internal structures. The artificial viruses can also transform cells into another. That means those viruses can turn bacteria against each other. Or they can transform the bacteria into an immune cell. 

https://phys.org/news/2025-11-bacteriophages-treatment-options-antibiotic-resistant.html

https://scitechdaily.com/reviving-exhausted-t-cells-sparks-powerful-cancer-tumor-elimination/