Question

First of all, I'm not a biology student or have sufficient knowledge of biology so I apologize if this question appears silly. Let's say patient A has cancer cells and a healthy person B has the same blood type as patient A, by using a blood regulator device to regulate the blood between A and B, will the white cell in patient B recognize the normal cell in patient A as foreign cell and attack it? Is there a chance the white cells of person B recognize the cancer cell in patient A as a foreign cell and attack it?

So far what I understand as below from internet

At early stage white blood will detect cancer cell but as the cell evolve, the white blood cell will no longer recognize the cancer cell as foreigner cell which enter the escaping phase, in this phase the cancer cell start to growth without obstruction. However, I am not able to find article like the membrance wall constitution for different people so logically if it is similar, the white cell will not recognize normal cell in both people as a foreigner cell, correct me if i'm wrong but a cancer cell that enter the escaping phase may not treated as normal cell in person B due to difference membrance wall constitution? If this is true, then can this method use to save patient with cancer especially for family members that willing to use a blood regulator device to constantly regulate the blood between both hence regulate the white blood cell of person B into A to fight cancer cell? If this work, this can also use to save patient with Covid at critical stage where an immune person can regulate the blood between both people as if lending the person immunity system to fight covid infected person?

Answer 1

The immune system can recognize and attack foreign cells, including cancer cells, but specific factors influence whether a cell is recognized as foreign or not. Organ transplants must match major histocompatibility complex (MHC) molecules to avoid rejection by the recipient's immune system. Cancer cells can evade or suppress immune responses, allowing them to continue growing.

Step-by-step explanation:

The immune system is capable of recognizing and attacking foreign cells, including cancer cells, through the action of white blood cells. However, there are specific mechanisms and factors that determine whether a particular cell is recognized as foreign or not. In the case of an organ transplant, the success of the transplantation relies on matching the MHC (major histocompatibility complex) molecules between the donor and recipient, as this is what determines whether the recipient's immune system will recognize the transplanted organ as foreign or not. If the MHC molecules are not sufficiently matched, the recipient's immune system may attack and reject the transplanted organ.

Similarly, in the case of cancer cells, the immune system can recognize and attack them, but cancer cells have the ability to evade or suppress the immune response. As cancer cells evolve, they can develop mechanisms to avoid recognition and destruction by white blood cells. This is one of the reasons why cancer can continue to grow without being effectively eliminated by the immune system.

While using a blood regulator device to constantly regulate the blood between a healthy individual and a cancer patient may seem like a potential solution, it is important to note that the immune response is not solely dependent on blood cells. It involves complex interactions between different cells and molecules, and regulating blood alone may not be sufficient to activate a strong immune response against the cancer cells.