Immunotherapy: Genetically Engineered T-Cells

Immunotherapy has been on an upward trend in cancer treatments recently. By activating the body’s own immune system, immunotherapy puts to use the body’s own powerful anticancer mechanisms to achieve a response against the cancerous cells. Most of the current cancer treatments are non-specific immunotherapy, meaning that they boost the immune system in a more general way and act by blocking antibodies and T cell receptors. On the other hand, specific immunotherapy targets tumor antigens on cancer cells.

It has targeted cells that work to kill and defend any pathogen or impurity that enters one’s body. In the case of cancers, a person’s cells grow abnormally forming a tumor. Unlike normal cells, cancer cells lose the ability to undergo apoptosis, cell death. Thus, one’s body harvests a tumor that most likely has a chance to spread and become deadly. Luckily, the biotech industry concocted innovative research that called for a new method of cancer treatment. Immunotherapy is designed to program one’s immune system to destroy and fight off the cancer. Originally, it has been mainly used for allergies. Dosages of medication or vaccinations are given to a patient to ensure that the immune system will not overreact to certain types of foreign substances. The therapy requires a drug that delivers an anticancer immune cell, specifically designed to attach on to the specific antigen that the tumor contains. According to scientist, immunotherapy gives patients “long term protection with reduced side effects against the cancer” (McGinley). The purpose of this treatment is to strengthen the immune system and specifically targets cancerous cells. Due to scientific research and the use of biotechnological methods, immunotherapy is able to prevent the threat of killing cells necessary to one’s body. Providing patients with a treatment that does not take a toll on their bodies, nor threaten to kill healthy cells is one relief the person

Cancer immunotheraphy is a concept that has been around for centuries. Back in the 1800s, a bone surgeon named William Coley injected his patients with a vaccine consisting of killed bacteria hoping it would stimulate the body's defense system. During the 1990s, physicians treated people with cancer with a cytokine treatment. This treatment involved high amounts of interleuken-2 (IL-2) and interferon-γ (IFNγ), also known as inflammatory cytokines. These inflammatory cytokines were released by white blood cells that fight infection (T cells). However, this treatment can have very dangerous side effects such as vascular leakage and kidney damage, but some people that received the cytokine treatment have lived for decades. In the year of 1996,

Immunotherapy is a form of medical treatment intended to stimulate or restore the ability of the immune system to fight infection and disease. This can be by inducing, enhancing, or suppressing an immune response. Immunotherapies designed to elicit or amplify an immune response are classified as activation immunotherapies, while those that reduce or suppress immune response are suppression immunotherapies. Active immunotherapy has been effective against agents that normally cause acute self-limiting infectious disease. However, a more effective immunotherapy for chronic infectious diseases or cancer requires the use of appropriate target antigens; the

A key factor in the development of tumors is the ability of cancerous cells to evade recognition from the bodies’ natural defense against cancer, the immune system. Immunotherapies effectively block the pathways that shield cancerous cells from being identified, and thus the promote the bodies own anti-tumor response. However, one challenge to immunotherapy has been its combination with chemotherapy, the mainstay of cancer treatment. While chemotherapy is extremely effective in stopping the rapid division of cancerous cells, its toxic immunosuppressive side-effect make it difficult to combine with

The research presented in Jedd D. Wolchok “Cancer’s Off Switch” examines two different forms of immunotherapy used to treat cancer cells by boosting the patient's own immune system defenses. The article provides a comprehensive history of the scientific discoveries and previous research that lead to the immunotherapy treatments, specifically the different levels of the immune system. In addition, the article addresses two different methods of immunotherapy currently in testing in clinical use. The research is educationally significant because it focuses on the body's internal defense system and attempts to disable the brakes cancer cells enforce on the immune system, which has shown progress in both tumor size regression and improvements in

Describe how and why both types of adaptive immunity can cause problems with organ transplantation.

Many doctors, physicians, researchers and biotech companies--including the revolutionary Seattle Genetics research facility--are now turning to antibody-assisted cancer treatments and precisely targeted cures instead of treating cancer with a cocktail of chemicals and radiation that generate risky side effects and damage the healthy tissue that patients need to recover. Cancers are among the most frightening and difficult-to-treat illnesses. Ranked as the leading cause of death and disability, cancer is actually an umbrella term that covers many different diseases. Each person faces a unique disease because cancers interact with the body's existing cells, so each case has a

Long times ago, even during the 19th century, scientist all over the world had started to find the cure for cancer, one of the most feared disease you can ever imagine, simply because you don’t know what the cause and how to turn it off. Cancer started

Immunotherapy has caught the interest of researchers as these treatments use the own body immune system to to detect and destroy cancerous cells. A cancer vaccine has been the most appealing as it could be made of whole pancreatic cancer cells, so that the body can detect these foreign cells and build up antibodies, so when these cells do show up later the body can recognize and attack the production of cancerous cells. Fortunately, antibodies have been helpful in various cancers, but it has not worked with treating pancreatic cancers.

As the world continues to suffer from these devastating diseases, researchers continue to find alternative therapeutic ways of addressing cancer treatment. It is on this premise that various immunotherapeutic alternatives have emerged and currently garnering the greatest level of attention and already raising hope throughout the world in addressing the treatment of NSCLC. However, this can no longer be viewed as a discovery but a wave in the medicine world that began in the 20th century. Various researchers have found the importance of the role of immune systems in fighting the growth of tumor caused by cancer cells. A study by Huncharek (2000) stated that specific immune boosters are capable of eliminating preclinical cancers. In contrast, Jermal et al. (2011) found that immunotherapy is an effective approach for the treatment of tumors that have already turned into solid. Similarly, the researchers highlighted that immunotherapy can be an effective approach to the treatment of melanoma as well as renal cell cancers (Lasalvia-Prisco, 2008). However, Jemal et al. (2011) noted that immunotherapy cannot achieve much in cancer treatment due to limitation brought about by the emission of immunosuppressive cytokines and subsequent loss of antigen expressions. Recent development in research studies on the immunotherapy approach to cancer treatment continues to elicit mixed reactions among researchers of medicinal ecology (Jadad et al., 1996). However, recent development in

3.) The mayo clinic article on monoclonal antibody drugs for cancer seems to be a conveniently recent development and an answer to my query in the previous paragraph. Basically they are laboratory-produced molecules that are engineered to attach themselves to cancer-affected areas of the body, and make them more visible to the body’s immune system. They also block growth signals in the cancer cells, preventing them from developing new ways to improve blood flow to them. They even have the ability to deliver radioactive and chemotherapy directly to cancer cells without having to deal with daylong chemo sessions or high-dose beam radiation. This relates to Gladwells’ approach because researchers definitely thought outside the box to come up with it. A lot of todays’ medicine treats the symptoms and or gets the body to do most of the work. With cancer, doctors usually try to get the medicine to do the work. By unveiling the

For example, Wiskott-Aldrich and Beckwith-Wiedemann syndrome are known to alter the immune system. The immune system is a complex system that functions to protect our bodies from infection and disease. The bone marrow produces cells that later mature and function as part of the immune system. One theory suggests that the cells in the bone marrow, the stem cells, become damaged or defective, so when they reproduce to make more cells, they make abnormal cells or cancer cells. The cause of the defect in the stem cells could be related to an inherited genetic defect or exposure to a virus or toxin. Exposures to certain viruses Epstein-Barr virus and HIV, the virus that causes AIDS, have been linked to an increased risk of developing certain childhood

Car T-cells are more formally known as chimeric antigen receptors. These cells are genetically modified t-cells that are designed to target tumor cells. These CAR t-cells work by circulating through the blood looking for cells that they can bind to. The receptors of these cells are specifically designed to recognize a pattern that is common cancer. Once they cell comes into contact with the specific receptor, cell will then attack and destroy the cancer, but also can tell the rest of the body that there is a problem. The additional hope is that the CAR-T cells will create memory cells within the body as a normal T-cell. In the simplest explanation, CAR-T cells are genetically modified to attack cells the body would otherwise not recognize.

According to Rosenberg (1988), the field of immunotherapy has become an area of significant and increasing interest within the field of medical science, prompted by the recent advances in knowledge of both biotechnology and cellular immunology. The field of immunology has produced revolutionary developments such as vaccines, which have prevented and decreased the occurrence of numerous infectious diseases over the past two centuries (Oviedo-Orta et al. 2013). Vaccine development has in turn combined immunology and drug design, resulting in a great deal of innovation over the last four decades endeavouring to expand the benefit of immunology past vaccines against foreign pathogens, and towards the treatment of chronic debilitating diseases.