Based on the requirements of our body, body cells grow and divide to form new cells. This means that the body’s cells age and die exactly as programmed. New cells are born to replace old ones.
In some cases, however, some of the cells divide uncontrollably and spread to the surrounding tissues, proving fatal. These are life-threatening cancer cells. They don’t die. Rather, they spread to nearby tissues in the form of solid tumors. or changes in the DNA in the blood.
Research has shown that there are approximately 14 million cancer cases worldwide and 8.2 million cancer deaths. Cancer can be of any type. It could be ovarian, breast, testicular, skin, brain or blood cancer. The types of cancer are all life-threatening, but can be treated through surgical removal, radiation, immunotherapy, targeted drug therapy, and stem cell therapy.
Stem cells have a promising contribution to the treatment and cure of cancer and its research, thereby fighting all conventional cancer treatment methods. Stem cell therapy is based on stem cells’ special characteristics of self-renewal, differentiation and damage repair.
Stem Cell Transplant or Stem Cell Therapy for Cancer
A stem cell transplant or treatment is the way to restore bone marrow function for all those patients suffering from cancer of the bone marrow, peripheral blood or immune system. Bone marrow stem cells? or hematopoietic stem cell transplantation are some of the examples. These are performed through autologous or allogeneic stem cell transplant procedures. Although these two procedures are different, they have been shown to be effective for those cancer patients who have already undergone high doses of chemotherapy or radiation therapy.
Transplantation of Autologous Stem Cells
An autologous stem cell transplant is when patients use their own stem cells to eliminate cancer cells that have severely damaged the bone marrow and immune system. Specialists collect the stem cells from their bone marrow or blood and keep them frozen. The thawed stem cells are re-injected into the cancer person’s body to restore the functions of the damaged parts.
Since these stem cells are extracted from a person’s body, there are chances that the patient’s other tissues will be less attacked. As a result, the restored bone marrow and immune system may turn out to be stronger, but the elimination of cancer cells is not possible.
Allogeneic stem cell transplantation
In this type of cancer treatment, stem cells are extracted from the donor’s body – they may or may not be related. Before starting this stem cell therapy, the main criteria are matching or establishing compatibility with the cell or tissue type. This is also known as human leukocyte antigen (HLA). HLAs are sets of proteins or markers in the body. The more HLA matches between the recipient and the donor, the greater the chances of success of the transplant or stem cell therapy.
There may be a chance that a cancer patient’s immune system will reject the donated stem cells.
There are also chances of donor cells responding to the patient’s tissue, thereby causing graft-versus-host disease (GvHD).
However, allogeneic stem cell transplantation is also beneficial. There is a graft versus tumor (GvT) effect. In this condition, the donor’s immune system recognizes the remaining deadly cancer cells that have survived chemotherapy and tries to eliminate them. GvT phenomenon comes along with GvHD. It significantly affects mortality after transplantation or treatment.
Discovery of T-Cells Cancer Treatment
T lymphocytes, also known as T cells, are a type of white blood cell that are essential for the proper functioning of the immune system. They are responsible for recognizing specific antigens, which are molecules present on the surface of cells that are capable of triggering an immune response. Once they recognize an antigen, T cells either directly attack and eliminate cells displaying the antigen or release chemicals that activate other immune cells to destroy them. This means that the T cells seek out and destroy the targeted cancer cells.
For example, the discovery of induced pluripotent stem cells (iPSCs) through reprogramming of normal cells has led to the development of new methods to produce tumor cell-specific killer T cells. iPSCs can be programmed to differentiate into various cell types, including T cells, which play a critical role in the immune system’s defense against cancer. The new cancer treatment.
Overall, stem cell therapy is still considered the first line to support high-dose chemotherapy or radiation therapy in cancer treatment.
Cord blood stem cell transplant or cancer treatment
Cancer treatment with high doses of chemotherapy or radiation can lead to marrow and blood injury. In addition, due to the lack of suitable bone marrow donors, there is a risk of graft-versus-host disease (GVHD) as well as impaired immune recovery.
However, cord blood is considered a better and promising alternative for cancer treatment. Umbilical cord blood stem cells are known to treat acute lymphocytic leukemia, acute myeloid leukemia, etc. How;
After examining tumor samples from animals before they were destroyed, the researchers discovered that cord blood stem cells triggered the rapid production of CD4 cells. These white blood cells play a key role in coordinating the immune system’s response to tumors and viruses. In addition, tumors quickly fill with CD8 cells, which are the killer cells that destroy cancer tissue.
Surprisingly, immune cells in cord blood can recognize and kill abnormal cells effectively, even without prior exposure. In addition, studies have identified advantages such as a lower incidence of GVHD.
