Category Archives: Cancer Research

Properties of Breast Tissue May Play a Role in Cancer Progression

There is New Hope for Breast Cancer Treatment
There is New Hope for Breast Cancer Treatment

Doctors have found some success with immunotherapy for cancer during the late stages of the disease, but the mystery of what causes certain tumors to spread has remained unsolved. Scientists are now turning to a surprising source for information about breast cancer progression.

A Matter of Engineering?

Ovijit Chaudhuri, an assistant professor of mechanical engineering, has been working with researchers across campus exploring the mechanical properties of breast tissue and their role in cancer progression. According to Chaudhuri, evidence supporting this relationship has been accumulating over the last 20 years.

Questions being studied by the teams include:

– How does stiffness of breast tissue encourage the growth and spread of tumors? Chaudhuri’s group is culturing mammary cells inside a hydrogel and tuning its stiffness to determine how it affects the development of cancer cells.

– How do cancer cells find their way past the membrane surrounding breast tissue that is seemingly too dense to allow passage? Currently, the scientists theorize that the cells use a combination of enzymes and force to “cut” their way through.

– As surrounding tissue grows in stiffness over time, how do tumors find space to expand?

Mechanobiology: A Complementary Approach

This isn’t the first time that scientists have sought biological information from the field of engineering. The result is the hybrid science of mechanobiology, which studies the interactions of mechanical properties and biological processes.

Immunotherapy for Cancer: Treating Resistant Tumors

At Issels®, our non-toxic immunotherapy programs have helped patients with advanced and therapy-resistant cancers achieve long-term remission. Visit our website for more information about our successful history of personally tailored and integrative cancer treatment programs.

Immunotherapy May Now Be Possible for Some HIV Positive Patients

Targeted Immunotherapy May Now Be Possible
Targeted Immunotherapy May Now Be Possible for Some HIV Patients Who Have Cancer

Even though cancer is a major cause of death for patients with HIV, their compromised immune systems have been a barrier to immunotherapy for cancer treatments. A recent study shows that immunotherapy may be safer for HIV patients than was previously thought.

Is Immunotherapy for Cancer Compatible with HIV-Positive Patients?

Although HIV patients have routinely been excluded from immunotherapy research, results of a clinical trial involving them were presented at last fall’s meeting of the Society for Immunotherapy for Cancer. The study included 17 HIV-positive patients with advanced cancers of various forms.

Patients in the trial were treated with Keytruda, a checkpoint inhibitor approved for use with melanoma, lung cancer, Hodgkin’s lymphoma and a number of other cancers. Results showed that Keytruda had a positive effect on the patients.

Continuing Research into HIV-Positive Patients and Immunotherapy

The one exception was Kaposi sarcoma (KSHV), a viral form of cancer associated with HIV and immune system disorders. Kaposi sarcoma patients in the trial did not experience the same benefits as others, so the study has been amended to exclude those with symptomatic KSHV.

According to team member Dr. Thomas Uldrick, further research is needed with immunotherapy and KSHV patients, but it doesn’t negate the overall message that immunotherapy can be safe for HIV patients. The National Cancer Institute also recommends the inclusion of HIV patients in clinical immunotherapy trials.

Issels®: Defeating Advanced Cancer with Immunotherapy

Our individually tailored immunotherapy for cancer treatments have helped patients achieve long-term remission, even in cases where traditional treatments have failed. Contact us to learn more about cancer vaccines and other non-toxic treatments at Issels®.

Monumental Advances in the Treatment of Bladder Cancer

There is New Hope for Bladder Cancer Treatment
There is New Hope for Bladder Cancer Treatment

When it comes to immunotherapy cancer treatment, checkpoint inhibitors have been a major game-changer. 2017 alone saw five approvals for checkpoint inhibitors that greatly advanced treatment for bladder cancer.

Bladder Cancer Treatment: The Year in Review

During the Society of Urologic Oncology’s annual meeting in late 2017, speaker Elizabeth Plimack, M.D., recapped the year’s highlights in bladder cancer treatments.

– The good news began in February, with the approval of Opdivo for second-line treatment of bladder cancer as a follow-up to platinum-containing therapy.

– After approval in 2016 as a second-line treatment, Tecentriq was granted approval as a front-line treatment in April 2017.

– May 2017 brought about approvals for three more treatments: Imfinzi, Bavencio and Keytruda.

As Plimack stated during her presentation, these approvals demonstrate that checkpoint inhibitors are “here to stay.”

What Lies Ahead?

One area that needs more research is how to be more accurate in choosing patients who will be most receptive to these treatments. Other features that require further studies include duration of response, delayed toxicities and overcoming resistance.

Plimack’s comments included cautioning against extrapolating the data to patients who are eligible for cisplatin, which is a form of chemotherapy. As Plimack explained, more trials are needed before checkpoint inhibitors are approved to replace cisplatin as first-line treatments.

Issels®: Immunotherapy Treatment for Advanced Cancers

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New Challenges Exposed in Treating Bladder Cancer

Just Because an Answer is Presented with Obstacles That Doesn't Mean it's Impossible.
Just Because an Answer is Presented with Obstacles That Doesn’t Mean it’s Impossible.

Checkpoint inhibitors, one of the major forms of cancer immunotherapy, have played a significant role in the way doctors treat bladder cancer. Researchers are now tackling new challenges in order to improve the effectiveness of these treatments.

Checkpoint Inhibitors and Bladder Cancer

Five checkpoint inhibitors recently received approval from the Food and Drug Administration: Keytruda, Opdivo, Tecentriq, Imfinzi and Bavencio. All five have been tested as both first-line and second-line treatments.

When used with patients who had previously been untreated, these therapies achieved a positive response in 15 to 25 percent. As second-line treatments for patients who had received chemotherapy, only Keytruda showed improvement in overall survival rates.

Solving the Puzzle of Patient Selection

Andrea Necchi, a medical oncologist from Italy, spoke on the topic at last year’s European Multidisciplinary Meeting on Urological Cancers. Necchi explained that patients who respond to checkpoint inhibitors have a high chance of success, so it becomes an issue of patient selection.

According to Necchi, one condition that appears to inhibit use of cancer immunotherapy is the presence of mutations in fibroblast growth factor receptors (FGFR). Testing of pan-FGFR receptors suggests that using them before or after treatment with checkpoint inhibitors could increase chances of a positive response.

Since the use of the five checkpoint inhibitors alone will not boost survival rates, researchers are testing them in different combinations with other treatments, including other checkpoint inhibitors.

Issels®: Leading the Way in Cancer Immunotherapy

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Cancer Therapies at the Molecular Level in Intracellular Proteins

Cancer Therapies at the Molecular Level in Intracellular Proteins
Cancer Therapies at the Molecular Level in Intracellular Proteins

As scientists work to refine immunotherapy cancer treatment, they also look for ways to determine which patients are most likely to respond. According to a recent study, one of the answers may lie within a patient’s genetics.

HLA Molecules and Intracellular Proteins

T-cells are a type of white blood cell that’s part of the immune system. Human leukocyte antigen (HLA) molecules help direct T-cells towards cancer cells by binding peptides from intracellular proteins, including those found on tumor cells.

Some immunotherapy treatments that have been successful in fighting metastatic cancers focus on promoting activity of HLA-1 molecules. A research team at Memorial Sloan Kettering Cancer Center genotyped more than 1,500 advanced cancer patients to determine if HLA variants had an effect on post-treatment survival.

Do HLA Variants Affect Cancer Treatment?

Since HLA-1 molecules come in a number of different forms with several variants, the researchers speculated that those variations would influence the patients’ responses to treatment. As expected, patients with greater diversity in HLA-1 molecules had a corresponding increase in survival rates.

The study also considered the correlation between somatic mutations within a cancer genome and HLA-1 variations. A higher tumor mutation burden in combination with more diverse HLA-1 molecules was linked to higher survival rates as well.

Gene-Targeted Cancer Treatment at Issels®

Advanced gene-targeted therapies are just one of the treatments available for our comprehensive and individually tailored programs. Non-toxic gene-targeted therapies attack only cancerous cells, making them less harmful to healthy tissues.

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Adoptive Cell Transfer a Natural Immunotherapy for Cancer

Adoptive Cell Transfer a Natural Immunotherapy for Cancer
Adoptive Cell Transfer a Natural Immunotherapy for Cancer09

Scientists are excited about immunotherapy for cancer because it supplements a patient’s own natural defenses of the immune system. Thanks to a recent study, researchers have made a discovery that could lead to more effective immunotherapy treatments.

What Is Adoptive Cell Transfer?

Adoptive cell transfer, one of the primary forms of immunotherapy for cancer, involves extracting a patient’s T-cells, which are a form of white blood cells that attack foreign invaders in the system. After engineering the T-cells to target the specific proteins in cancer cells, they are injected back into the patient.

While adoptive cell transfer has been successful in treating blood and bone marrow cancers, it’s been less effective with solid tumors. A team from The Scripps Research Institute and the University of California, San Diego set out to find a better way to program the T-cells.

Unleashing the Power of T-Cells

The researchers zeroed in on a protein known as Runx3, which appeared to specifically direct T-cells to solid tumors. During testing on animal models, it was found that overexpression of Runx3 led to delayed tumor growth and longer life.

Matthew Pipkin of Scripps said that Runx3 works on chromosomes within T-cells, enabling them to focus on killing tumor cells. Pipkin was hopeful that their discovery would pave the way for improving the effectiveness of adoptive cell transfer on solid tumors.

Issels®: The Leader in Immunotherapy for Cancer

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