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Cancer’s Game Changer

Recent advances in immune therapies represent a big leap toward a cure

Cancer’s Game Changer
Photo by Darrell Eager
It’s been nearly two generations since the Nixon administration declared a “war on cancer,” with the optimistic goal—one that has almost been forgotten—of eradicating the disease permanently within a decade. Today the American Cancer Society predicts that nearly 600,000 Americans will die of cancer this year; one in eight women deals with breast cancer at some point in her life, and ovarian cancer is among the most deadly for women, after cancers of the lung and colon. Yet within just the past few years there has been a confluence of discoveries about cancer and the immune system that has inspired renewed hope—and a sense that major breakthroughs may be months or years away.
 

In clinical trials, the success stories across the country have been stunning: a 70-year-old with melanoma given six months to live two years ago who is now healthy and cancer-free; eight of nine patients whose severe lymphoma was brought into remission, with three having their cancer disappear. Though not consistently reproducible, these results  are so encouraging that research is moving quickly—in 2011, the National Cancer Institute announced funding for a network of clinical trials into immunological approaches.

Cancer can be such a difficult disease to treat because of its ability to trick the immune system as its cells grow and spread, either exhausting immune components or producing chemicals that cause them to overlook the cancer as harmless. Dr. Joseph Leach of Minnesota Oncology, director of oncology research at Virginia Piper Cancer Institute, refers to this as cancer’s “cloaking device.”

The new breakthrough focuses on immune components called T-cells, which researchers have discovered have built-in “brakes” that normally prevent them from attacking healthy tissues and organs in our bodies—a quality that cancer cells exploit. Previous attempts to combat cancer with the immune system had focused on boosting its power, adding ammunition in a biological arms race. Now the idea is to take off these “brakes” with respect to cancer and allow the immune system to do its job, while not shutting them down completely, which can cause autoimmune problems.

“The basic idea is getting the immune system to recognize that cancer is foreign, and then eliminating it,” says Leach. “It’s the holy grail of cancer treatment, and it’s seemed like a dead end for many years.”

Leach also makes an important distinction: Many previous cancer treatments have attacked the invasion through radiation and chemicals, and while these techniques have prolonged many lives and grown incredibly sophisticated, cancer has a tendency to “figure it out,” he says, and to mutate in self-defense to survive and proliferate.

“With these new therapies, the hope is that the cancer can’t mutate around the immune system,” Leach says. “Because even if it mutates, it’s still going to be a foreign cell, and the treatment will be more durable.”

These treatments aren’t yet standard practice, and research into direct applications for specific cancer types is in early stages. The search for across-the-board treatments, and perhaps cures, will hinge on research into the different makeup of each type of cancer.

“These are just the first generations,” adds Leach. “These are the stone-age tools—there are so many ways that we will be able to augment the immune system.”

Along the way, immune therapies also will open the door for potential combinations with targeted drugs, as doctors better understand the relationship between immunity and cancer. “There’s a ton of work that needs to be done yet,” Leach says. “But we’ve never been so hopeful that we’ll crack some of the fundamental mysteries. This is a new age. This is the way we’ll treat cancer in the future, and someday we’ll look back and laugh at the way we used to.”


Comments may be edited for length, clarity, or appropriateness.

Old to new | New to old
Jun 27, 2014 09:01 pm
 Posted by  jerimano

Hi joe it's me joe falasco the bipolar guy i believe this is really important and i believe it relates to our immune system that is created it the manic stage of bipolar 1 only,in that state I get super high energy and when I work hard(stucco) on physically demanding jobs I come home with no muscle pain and still quite active but when this manic goes away every muscle in my body hurts and i am in complete pain where it would take days to recover...it actually isn't my true manic but just my high energy stage and soothing the muscles doesn't work but being in that state of mind does.If that state can't be immune to muscle pain it might be to cancer too.

My cancer came in the winter when i am always on my low and i was in my creative state which is nonstop creativity.A state of mind that comes when it wants to.
i believe we should be trying to recreate that manic stage not take it away,it holds the secret to extreme happiness,high achievement,creative genius,extreme confidence and high self esteem and if it could do that to a person then it surely could conquer cancer.

Jun 27, 2014 10:16 pm
 Posted by  jerimano

HEY joe did you know that in 2012 the manic stage of bipolar has been recently linked to the NCAN gene which produces the neurocan protein that is cell-adhesion.

Dysfunction of cell-adhesion and cell-migration occurs during cancer metastasis. Cellular adhesion and traction can allow cells to migrate.[2]
Cells can form integrin mediated attachments sites called focal adhesions. Focal adhesions at the leading edge provide the necessary traction
allowing the cell to pull itself forward.
Tumor adhesion

Cancer metastasis tumors that spread through the circulatory system use mechanisms of cell adhesion to establish new tumors in the body.
Release of epoxyeicosatrienoic acid is believed to increase this propensity.[ taken from http://en.wikipedia.org/wiki/Cell_adhesion


In case of low-grade astrocytoma. brevican, " neurocan", tenascin-C and versican were found to correlate principally with the
invasive phenotype of low-grade astrocytoma, thus these molecules can potentially serve as targets for anti-invasion therapy in the future.

taken from 4/18/2012 study...http://www.ncbi.nlm.nih.gov/pubmed/21997179

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