Immunotherapy in Cancer Treatment: Understanding the Basics


Immunotherapy in Cancer Treatment: Understanding the Basics

Cancer remains a significant health concern worldwide, and medical professionals continue to research and develop innovative cancer treatment strategies. One promising field is immunotherapy, an area of cancer treatment that has captured the attention of many experts and researchers. This blog post will provide an in-depth understanding of immunotherapy as a cancer treatment option, underlining its effectiveness, benefits, and the various methods practiced at CenterPoint Radiation Oncology in Beverly Hills, CA.

Immunotherapy leverages the power of the body’s immune system to combat cancer. This innovative treatment differs from traditional cancer therapies, like chemotherapy or radiotherapy, which aim to destroy cancer cells directly. Instead, immunotherapy boosts the individual’s immune system’s abilities or provides synthetic immune components to fight cancer more effectively. Consequently, specialists increasingly employ immunotherapy as a stand-alone treatment or supplement to other cancer treatments, depending on the patient’s needs and cancer type.

Immunity vs. Cancer: The Intricate Battle

Cancer cells are notorious for their ability to evolve and evade the human immune system. Over time, these rogue cells effectively “cloak” themselves from surveillance by our body’s natural defense mechanisms, allowing the cancer to grow unchecked. Immunotherapy sheds light on this ongoing struggle, working with our immune system, and honing its strength to detect and fight cancer cells more effectively. In this article, we will delve deeper into the realm of immunotherapy, exploring the compelling science behind this groundbreaking treatment approach.

Checkpoint Inhibitors: Unlocking the Full Potential of the Immune System

Our immune system uses precise mechanisms to distinguish healthy cells from unhealthy cells, like cancer cells. One such mechanism includes “checkpoints,” which are proteins on T-cells (a type of white blood cell) that help regulate their attack on harmful cells. However, cancer cells can exploit this feature by producing matching checkpoint proteins to switch off the T-cell’s attack mechanisms. As a result, these nefarious cancer cells can evade the immune response and continue to grow.

Checkpoint inhibitors are a class of drugs designed to counteract this deception. By blocking these checkpoint proteins, these drugs essentially “remove the brakes” of the immune response, enabling our immune system to recognize and target cancer cells more efficiently. Several checkpoint inhibitors have been approved for various cancer types, including pembrolizumab for melanoma and non-small cell lung cancer. As this treatment method continues to develop, it holds promise for an ever-growing list of cancer types.

Monoclonal Antibodies: Targeting Cancer Cells Directly

Monoclonal antibodies are a potent type of immunotherapy designed to target cancer cells directly. These engineered immune proteins recognize and bind to specific molecules on cancer cells’ surfaces called antigens. This precise targeting allows for various outcomes, including direct interference with cancer cell growth, enhancement of the immune system’s ability to target and destroy cancer cells, and the delivery of other anticancer therapies, such as chemotherapy drugs, directly to the cancer cells.

Many monoclonal antibodies are currently in use, like trastuzumab targeting HER2-positive breast cancer and cetuximab, approved for colorectal and head and neck cancers. As scientists continue to identify cancer cell-specific antigens, more monoclonal antibodies are expected to emerge in the quest against cancer.

Cancer Vaccines: Boosting the Immune Response

At first glance, vaccines may seem like an intervention reserved for infectious diseases, but they can play a crucial role in cancer treatment. Cancer vaccines work on the same principle as conventional vaccines – they introduce specific antigens into the body to strengthen the immune system’s response against a target, in this case, cancer cells.

There are two main types of cancer vaccines: preventive and therapeutic. Preventive vaccines, like the human papillomavirus (HPV) vaccine, can help protect against specific viruses known to cause cancer. Therapeutic vaccines, on the other hand, are designed to train the immune system to attack existing cancer cells. One example of a therapeutic cancer vaccine is sipuleucel-T, used to treat men with advanced prostate cancer.

Adoptive Cell Therapy: Deploying Supercharged T-cells

Adoptive cell therapy (ACT) is an emerging immunotherapy technique that involves harvesting T-cells from a patient’s tumor, expanding and enhancing them in a laboratory, and reintroducing them into the patient to attack and kill cancer cells. A specialized form of ACT is chimeric antigen receptor (CAR) T-cell therapy. In this process, researchers modify T-cells with an added chimeric antigen receptor, which empowers them to latch onto specific antigens on cancer cells.

CAR T-cell therapy has shown remarkable results, particularly in treating some forms of leukemia and lymphoma that have been unresponsive to traditional therapies. As research continues and technology advances, additional cancer types may benefit from this promising treatment method in the future.

The Future of Immunotherapy: Personalized and Multimodal Treatment

Immunotherapy is becoming an invaluable tool in the fight against cancer, and its potential for personalized and multimodal treatment strategies makes it a critical focus for researchers worldwide. Future immunotherapy developments may include combining various immunotherapy approaches, integrating immunotherapy with conventional treatment options, and tailoring therapies based on individual genetic markers.


As we unravel the depths of our immune system and how cancer cells manipulate it, we uncover innovative ways to build upon our body’s natural defenses. Immunotherapy has the potential to revolutionize cancer treatment and improve patient outcomes. At CenterPoint Radiation Oncology in Beverly Hills, CA, we are dedicated to staying at the forefront of cancer research and treatment advancements, including immunotherapy. Our commitment to providing world-class, personalized care ensures that our patients receive the support and resources they deserve in their battle against cancer. Contact our cancer treatment center in Los Angeles now. 


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