Tag Archives: Cancer DNA

Alternative Cancer Treatment, Cancer Research, Cancer Treatment, Immuno-Oncology, Immunotherapy, Immunotherapy for Cancer, News

New Research Using a Molecule to Target Proteins that Grow Cancer Tumors

New Research Using a Molecule to Target Proteins that Grow Cancer Tumors
New Research Using a Molecule to Target Proteins that Grow Cancer Tumors

One of the benefits of immunotherapy for cancer is that it doesn’t carry the same debilitating side effects as more traditional treatments. Researchers in Australia made a significant breakthrough in the field with its work on “designer molecules” that inhibit growth of cancer cells.

Stopping Cancer at “Ground Zero”

The study, conducted by a multi-disciplinary team from the University of Adelaide, involved a protein called proliferating cell nuclear antigen (PCNA). PCNA’s donut-like shape lets DNA slide through its center, where it is then replicated.

As explained by project leader Dr. John Bruning, while PCNA is required for DNA replication, it’s overexpressed in 90 percent of all cancers. The team set out to find a way to target PCNA, thereby preventing cancer cells from multiplying.

Creating a Barrier to Cancer Cell Proliferation

Bruning’s team successfully created a drug-like molecule using a protein that naturally interacts with PCNA. They were also able to change the chemistry to keep it from degrading as it does in its natural form.

PCNA rarely mutates, making it less likely to develop resistance against the “designer molecule,” which has demonstrated greater effectiveness than previous forms of PCNA inhibitors with less chance of side effects.

According to Bruning, the use of a natural protein in the creation of the molecule allows for more precise targeting of PCNA. Bruning is hopeful that his team’s work will usher in the development of a whole new class of drugs.

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Alternative Cancer Treatment, Cancer Research, News

Medicare Will Now Cover FDA-Approved Genomic Testing for Cancer Treatment

Medicare Will Now Cover FDA-Approved Genomic Testing for Cancer Treatment
Medicare Will Now Cover FDA-Approved Genomic Testing for Cancer Treatment

Genomic testing is an important tool that helps doctors determine whether or not a patient is a candidate for cancer immunotherapy treatment. Last month, the Centers for Medicare and Medicaid (CMS) made the announcement that Medicare will now cover FDA-approved genetic tests to evaluate cancer.

Giving Patients Access to “Innovative Diagnostics”

Discussion on the issue began several months ago when Foundation Medicine received FDA approval for F1CDx, the first broad genomic cancer test of its kind. The current cost for for F1CDx is $5,800.

At the time of the announcement, CMS administrator Seema Verma issued a statement explaining the decision. CMS believes that it will give cancer patients “enhanced access and expanded coverage when it comes to innovative diagnostics.”

Coverage for genomic and molecular cancer tests that are still in development and not yet FDA-approved does not change with the new policy. U.S. regional Medicare administrative contractors will retain discretion in regards to payment for such testing.

Opening the Door to Accurate Evaluation

For the time being, Foundation Medicine will likely see a surge in the number of specimens submitted to them for testing. In the big picture, the CMS decision will encourage researchers to gather the evidence needed for FDA approval of additional tests.

Experts predict that within a few years another half-dozen companies will join Foundation Medicine in offering FDA-approved testing. One scientist called the decision a “major advancement for precision medicine.”

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Breast Cancer, Cancer Research, News, Uncategorized

MSK1 Protein Research May Answer Why Some Breast Cancer Stays Dormant

MSK1 Protein Research May Answer Why Some Breast Cancer Stays Dormant
MSK1 Protein Research May Answer Why Some Breast Cancer Stays Dormant

Scientists have long been puzzled by the process of metastasis in breast cancer and what causes the cells to lie dormant. A recent study revealed valuable information that can pay off with more effective breast cancer treatment.

Understanding Latency in Breast Cancer Metastases

Researchers at the Institute for Research in Biomedicine (IRB) in Barcelona set out to study estrogen-positive (ER+) breast tumors that feature long periods of asymptomatic latency. This type accounts for 80 percent of breast cancer cases.

The Barcelona team identified a protein kinase called MSK1 as the primary regulator of dormant metastases. After examining clinical samples from patients, the researchers determined that ER+ breast cancer tumors that don’t express MSK1 tend to suffer earlier relapse, while those that do express MSK1 experience later metastases.

Breakthrough in Breast Cancer Treatment

Head researcher Roger Gormis explained that little was previously known about why breast cancer metastasis time varies from one patient to another. Study results also showed that suppressing MSK1 causes faster-growing cancer cells that have a greater chance of metastasizing.

Benefits of the study are two-fold:

– Doctors may be better able to identify patients who are more likely to relapse and adjust treatment protocol.

– Scientists may be able to develop a treatment that mimics the role of MSK1, thereby keeping metastasis dormant for as long as possible.

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