Tag Archives: Immunotherapy for Cancer Treatment

Special Adoptive T Cell Therapy Reprograms Metabolism of Cancer Cells Causing Their Death

New Cancer Research is Focused on T Cells
New Cancer Research is Focused on T Cells

“Everything in moderation” is often cited as the key to balance in life, but scientists are taking a different approach in a new form of cancer treatment. According to the results of a recent study, driving up levels of oxidative stress can be fatal to cancer cells.

Reprogramming the Metabolism of Cancer Cells

Reactive oxygen species (ROS) such as peroxide and superoxide are natural byproducts of the metabolism of oxygen, and they play a role in certain cell functions. But while high levels of ROS can kill normal cells and damage DNA, energy-hungry cancer cells consume greater quantities of ROS.

In a study published in Cell Metabolism, a research team at Augusta University examined the effects of adaptive T cell therapy on the metabolism of cancer cells. Testing was conducted on mice with large colorectal tumors.

When Oxidative Stress Becomes Fatal

Adoptive T cell therapy followed treatment with a chemotherapy drug that boosted the activity of the infused T cells. Nearly all the mice experienced complete tumor regression as an apparent result of two factors:

– Treatment interfered with production of an antioxidant called glutathione, causing ROS levels to rise.

– T cells increased production of proinflammatory cytokines, chief among them tumor necrosis factor alpha, making cancer cells even more vulnerable to oxidative stress.

Dr. Gang Zhou, author of the study, expressed hope that these findings will help improve immunotherapy treatments by making it easier for T cells to target tumors.

Personalized Cancer Treatment at Issels®

Our comprehensive cancer treatment programs incorporate therapies that best address a patient’s individual needs. Contact us to learn more.

Identification of Key Biological Pathway Primes Immune System to Fight Cancer

It's Time to Stop Cancer
It’s Time to Stop Cancer

While immunotherapy cancer treatment has provided options for many patients, doctors are challenged by determining which patients will be most receptive. The recent discovery of a key biological pathway may prove to be a useful solution.

Stimulating the Power of the Immune System

Cancer cells often avoid the normal immune response by triggering the brake mechanism that keeps T cells from attacking healthy tissue. Immunotherapy drugs called checkpoint inhibitors override the brakes, but so far this treatment has been successful with a minority of patients.

In 2014, a research team at UC San Francisco discovered an element of the immune system called stimulatory dendritic cells (SDC), which help direct T cells to a target. The scientists also uncovered a correlation between low levels of SDCs and poor response to checkpoint inhibitors.

Creating a Receptive Environment for Immunotherapy

The team recently set out to learn why SDC levels vary among tumors. In this study, they found that natural killer (NK) cells in the immune system express a signaling protein known as FLT3LG. Presence of FLT3LG has a strong relationship to presence of SDCs.

While NK cells have long been recognized as a direct threat to cancer cells, the UCSF study demonstrates that they can also communicate with other immune cells. Scientists are hopeful that developing a way to increase the number of NK cells in a tumor will help more patients benefit from immunotherapy.

Issels®: The Leader in Advanced Cancer Treatment

Issels® has been ahead of the curve with cancer treatment methods such as dendritic cell vaccines and activated NK cells. Contact us for more information.

Why Some Lung Cancers Do Not Respond to Some Types of Immunotherapy Treatment

Why Some Lung Cancers Do Not Respond to Some Types of Immunotherapy Treatment
Why Some Lung Cancers Do Not Respond to Some Types of Immunotherapy Treatment

Despite the drop in smoking rates, lung cancer remains the second most common form of the disease in the United States. Scientists are hopeful that a recent discovery will aid the development of more effective immunotherapy for lung cancer.

A Roadblock in Lung Cancer Treatment

The immune system is the body’s first line of defense against foreign invaders. Immunotherapy is a form of cancer treatment that boosts the ability of the immune system to seek out and destroy cancer cells.

Current immunotherapy for lung cancer includes a drug that shuts down a protein on the surface of tumor cells. The protein, called PD-L1, latches on to T cells and prevents them from attacking.

Unfortunately, many lung cancer patients didn’t respond positively to this treatment. Scientists realized they needed to learn more about the “immune compartment of lung tumors,” which involves the relationship between the cancer cells and the tumor microenvironment.

Scientists Make a Breakthrough

A research team in Switzerland studied mice with a form of lung cancer similar to that in humans. They found that a type of immune cell known as Gr1+ neutrophils actually triggers a cycle in the microenvironment that promotes the growth of tumor cells.

Team leader Prof. Etienne Meylan explained that neutrophils are an essential part of the immune response, so removing them is not the answer. Future research will focus on how the neutrophils operate and how immunotherapy for lung cancer can work around them.

Issels®: The Leader in Effective Immunotherapy

For decades, we have been successful treating patients with immunotherapy for lung cancer and other forms of the disease. Contact us for more information.

Immunotherapy: A “Fundamental Change” in Cancer Treatment

Medical Research Has Validated that Immunotherapy Works to Fight Cancer
Medical Research Has Validated that Immunotherapy Works to Fight Cancer

As medical researchers have waged a decades-long battle to find a cure for cancer, the possibility of using a patient’s own immune system to fight tumors has been an exciting but unattainable dream. Today that dream is becoming reality with immunotherapy for cancer treatment.

“The Medical Equivalent of Splitting the Atom”

Traditional cancer treatments such as chemotherapy and radiation are designed to attack tumors directly. In contrast, immunotherapy aims to boost the power of a patient’s own immune system to battle cancer.

Dr. Jedd Wolchok, chief of melanoma and immunotherapeutics services at Memorial Sloan Kettering in New York City, refers to immunotherapy as a “fundamental change” in the approach to cancer treatment. Billions of dollars are being invested to fund hundreds of trials in which cancer patients anxiously plead to participate.

How Does Immunotherapy Work?

Your immune system is a complex network of cells, tissues and biochemicals that protect your body against illnesses caused by viruses, bacteria and other foreign substances. Cancer is particularly stubborn because it often evades detection by the immune system, allowing tumors to grew unchecked.

Immunotherapy comes in two basic forms:

  • Immune cells are removed from a patient, reprogrammed to fight cancer cells, and returned back into the patient’s bloodstream.
  • Checkpoint inhibitors are drugs that block the mechanisms used by cancer cells to shut down the immune system.

State-of-the-Art Cancer Treatment at Issels®

Our founder, Dr. Josef Issels, was a pioneer in the development of immunotherapy, and we’re proud to continue his legacy of helping patients successfully fight cancer. Contact us to learn more about our innovative programs of individually tailored cancer treatments.