Navigation Links
Study looks at using the immune system to reduce prostate cancer risk

ANN ARBOR, Mich. Immune therapies have been explored as a way to treat cancer after it develops. But a new study from the University of Michigan Comprehensive Cancer Center suggests that genetic risk of prostate cancer can be reduced by rescuing critical immune system cells.

The study was done in mice and would need further validation and extensive testing in the lab before being available for humans. But the results are promising for people with a strong family history of cancer or known cancer genes.

Typically, vaccines are based on specific antigens and trigger immunity for a specific pathogen. This is more challenging for cancer as the best lymphocytes that generate immunity to cancer are eliminated during development. In this new study, researchers sought to rescue these key lymphocytes called high affinity cancer-reactive T cells during their development.

The study appears online this week in the Proceedings of the National Academy of Sciences.

The researchers first showed that T cells involved in prostate cancer are deleted because of a gene called lymphotoxin alpha. When the mice lacked lymphotoxin, these T cells came back. These mice become more resistant to prostate cancer. This result suggests that lymphotoxin can be a good target for immune prevention.

Next, the researchers injected a protein targeting lymphotoxin into cancer-susceptible mice. Without treatment, all of these mice will develop prostate cancer, and typically by age 6 months half of them will have metastatic cancer that has spread to distant organs. Although the treated mice still developed tumors, none developed metastases after 30 weeks.

"It appears that the rescued T cells delay tumor formation. It may not be that this approach can prevent cancer altogether, but it can delay the process and slow the aggressive growth and spread of cancer," says study author Pan Zheng, M.D., Ph.D., associate professor of surgery and pathology at the U-M Medical School.

While this study looked specifically at mice with prostate cancer, the approach has potential for other types of cancer.

"There is a certain population with a high likelihood of getting cancer, and we need better strategies to minimize their risk. This approach may be translated into clinical care for those patients," Zheng says.

Prostate cancer statistics: 192,280 Americans will be diagnosed with prostate cancer this year and 27,360 will die from the disease, according to the American Cancer Society


Contact: Nicole Fawcett
University of Michigan Health System

Related medicine news :

1. Nexavar in Combination With Chemotherapy Demonstrates 74 Percent Improvement in Progression-Free Survival in Patients With Advanced Breast Cancer in Phase 2 Study
2. Study Suggests a Wider Use for Statins
3. Tired, Stressed Docs Make More Mistakes, Study Finds
4. New Families and Work Institute Study Reveals Declines in the Health of American Workforce
5. 45,000 excess deaths annually linked to lack of health insurance: Harvard study
6. Study of adjuvant endocrine treatment for breast cancer reveals cost of noncompliance
7. Short-term stress enhances anti-tumor activity in mice, Stanford study shows
8. K-State biologist to further study of cellular process that plays role in chronic disease
9. Alzheimers Soars, Global Focus Needed: Study
10. Study Published in The Lancet Showed Significant Survival Benefit for Patients Facing Deadly Form of Lung Cancer
11. Despite ongoing safety concerns, study finds adverse reactions from contrast agents rarely occur
Post Your Comments:
(Date:11/30/2015)... Caicos Islands, BWI (PRWEB) , ... December 01, 2015 , ... ... Recently Caribbean Journal, one of the leading digital news sites highlighting Caribbean destinations, ... reason? The weather. While much of North America shivers under chilly grey skies ...
(Date:11/30/2015)... ... 01, 2015 , ... Live Very Well is excited to ... on . The multi-carrier insurance exchange platform offers individual vision and ... to compare, quote and match plans to meet their needs. , Beginning ...
(Date:11/30/2015)... ... November 30, 2015 , ... ... four states in the U.S. require dental technicians to be certified or obtain ... industry, NADL created the “What’s In Your Mouth?” campaign to inform dentists that ...
(Date:11/30/2015)... ... November 30, 2015 , ... The world of hair transplants and restoration ... extraction. These techniques and procedures have been in use for many years and are ... Dr. Parsa Mohebi, M.D. has utilized many of these methods over the years, he ...
(Date:11/30/2015)... ... 30, 2015 , ... During the week of Thanksgiving, the ... for its research, education, support, and advocacy efforts. The campaign is held every ... Mesothelioma Applied Research Foundation, which also goes by Meso Foundation, holds the ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... Nov. 30, 2015 MEDTEC Japan 2016, Asia,s ... is to be held in Tokyo from 20 th  - 22 nd April ... --> -->   --> --> ... the United States . With the aging population and the government ... grow steadily. --> the United States . With the ...
(Date:11/30/2015)... 30, 2015 Diplomat Pharmacy, Inc. (NYSE: ... the Detroit Free Press as a Top Workplace , ... to work for in 2015. ... 100 winners annually, based on employee surveys rating company leadership, ... Workplaces are based solely on employee feedback. The survey is ...
(Date:11/30/2015)...  IBA Molecular North America, Inc. (IBAMNA), a U.S. ... that as of January 1, 2016, it will do ... to rebrand the company reflects a refined vision for ... close relationship with Zevacor Molecular.  Both IBAMNA and Zevacor ... Peter Burke , Vice President Sales ...
Breaking Medicine Technology: