Cancer Immunotherapy: Harnessing the Power of the Immune System
- 彩 菅野
- Jan 30
- 2 min read

Today, let’s explore and summarize the key aspects of immunotherapy, an innovative approach to cancer treatment.
Cancer immunotherapy is a revolutionary approach to treatment that empowers the body’s immune system to recognize and eliminate cancer cells. Immunotherapy leverages the natural defense mechanisms within our bodies, providing a more targeted and personalized approach. Below, we explore seven main types of immunotherapy and their unique mechanisms in cancer treatment.
We hope this knowledge empowers you to make informed decisions and feel confident in your treatment journey.
Immune Checkpoint Inhibitors
Immune checkpoint inhibitors work by blocking the mechanisms cancer cells use to evade immune detection. These therapies target proteins like PD-1, PD-L1, or CTLA-4, which act as brakes on immune cells (T cells). By releasing these brakes, the immune system can effectively attack cancer cells.
CAR-T Cell Therapy
Chimeric Antigen Receptor T-cell (CAR-T) therapy involves engineering a patient’s T cells to better identify and destroy cancer cells. The modified T cells are reintroduced into the body, where they specifically target cancer cells. This therapy has shown remarkable success, particularly in treating blood cancers like leukemia and lymphoma.
Cancer Vaccines
Cancer vaccines are designed to educate the immune system to recognize cancer-specific antigens. These vaccines can be used to prevent certain types of cancer (e.g., HPV vaccine for cervical cancer) or to treat existing cancers by boosting the body’s ability to attack tumors.
Cytokine Therapy
Cytokine therapy involves the administration of immune-activating proteins such as interleukins or interferons. These proteins enhance the immune response, enabling a more robust attack on cancer cells. Cytokine therapy is often used in combination with other treatments for a synergistic effect.
Monoclonal Antibody Therapy
Monoclonal antibodies are lab-engineered proteins designed to target specific antigens on cancer cells. They can either directly attack cancer cells or mark them for destruction by the immune system. Monoclonal antibodies are widely used in cancers like breast cancer (HER2-positive) and certain types of lymphoma.
Oncolytic Virus Therapy
This therapy uses genetically modified viruses to infect and kill cancer cells while leaving healthy cells unharmed. Oncolytic viruses not only destroy tumors directly but also activate the immune system to attack cancer cells throughout the body
BAK Therapy (Bystander Activation of Killer cells)
BAK Therapy is an emerging and promising form of immunotherapy that focuses on activating killer cells (cytotoxic T cells) in the immune system. By stimulating these cells to recognize and destroy cancer cells more effectively, BAK Therapy has shown significant potential in improving patient outcomes. Clinical studies indicate a notable reduction in tumor size and improved immune system resilience, making it a beacon of hope for advanced and resistant cancers.
Advances in immunotherapy have transformed cancer treatment, offering hope to patients with cancers that were previously difficult to treat. As research continues, the potential for combination therapies and new immunotherapy approaches promises to further improve outcomes.




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