Navigation Links
Moffitt Cancer Center researchers develop and test new anti-cancer vaccine
Date:6/8/2012

Researchers at Moffitt Cancer Center have developed and tested in mice a synthetic vaccine and found it effective in killing human papillomavirus-derived cancer, a virus linked to cervical cancers among others. The research was published in a recent issue of Cancer Immunology, Immunotherapy.

"Vaccines for cancer can be good alternatives to conventional therapies that result in serious side-effects and are rarely effective against advanced disease," said Esteban Celis, M.D., Ph.D., senior member and professor in Moffitt's Immunology Program. "The human papillomavirus, or HPV, is known to cause 99 percent of cervical cancers and annually causes more than 250,000 deaths worldwide." In addition, HPV is the causative agent of a large proportion of head and neck and genital cancers.

Although two approved prophylactic vaccines against strains of HPV that cause cervical cancer are now in wide use as a measure to prevent HPV infections, these vaccines cannot be used to treat HPV-induced cancers. Thus, there is a need to develop therapeutic vaccines for HPV-related tumors.

In an effort to find an effective HPV-cancer vaccine that would eliminate existing HPV-induced cancer, Celis and Kelly Barrios-Marrugo, Ph.D., of the University of South Florida College of Medicine's Molecular Medicine program, designed a peptide vaccination strategy called TriVax-HPV.

The TriVax vaccine strategy was designed to generate large numbers of cytotoxic T-cells that would seek out the proteins preferentially expressed in the tumors. The HPV16-E6 and E7 proteins function as oncogenic proteins inducing cancer. Thus, according to Celis and Barrios-Marrugo, a vaccine targeting these viral proteins is an "ideal candidate" to create strong immune responses, with the additional benefit of not generating autoimmune-related pathologies.

When they tested their vaccine in mice with HPV16-induced tumors, they found that TriVax containing a small synthetic fragment (peptide) of the E7 protein "induced tumor clearance in 100 percent of the treated mice" while the unvaccinated mice with HPV-induced tumors had their tumors grow "at a fast rate."

"Although the magnitude of the T-cell responses achieved with TriVax in mice is impressive," Barrios-Marrugo said," we do not know whether similar effects can be accomplished in humans."

Celis and Barrios-Marrugo point out that current therapies for cervical cancer can be devastating, highly toxic and associated with a 10 percent chance of recurrence. Additionally, a significant proportion of women in the Third World will not receive the approved prophylactic vaccine to prevent HPV infection and, thus, will continue at high risk for cervical and other cancers related to HPV.

"We believe that these studies may help to launch more effective and less invasive therapeutic vaccines for HPV-caused malignancies," concluded the authors.


'/>"/>

Contact: Patty Kim
patty.kim@moffitt.org
813-745-7322
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

Related medicine news :

1. Moffitt Cancer Center researchers identify drivers of sarcoma growth and survival
2. Researchers creating designer lymph nodes based on Moffitts Total Cancer Care initiative
3. Moffitt researcher awarded GE grant to develop tool to detect breast cancer metastasis genetic risks
4. Moffitt researcher publishes book on nutritional management of cancer treatment effects
5. Moffitt researchers find adolescents with cancer concerned about their future reproductive health
6. Moffitt Cancer Center researchers working at frontiers of melanoma research
7. Moffitt Cancer Center researchers: Quality of life as important as quantity of life
8. Moffitt researchers find cancer therapies affect cognitive functioning among breast cancer survivors
9. Study sheds new light on role of genetic mutations in colon cancer development
10. Child CT Scans Might Up Risk of Brain Cancer, Leukemia
11. 2-1-1 could be effective tool in fighting cancer disparities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... ... temporary closing of Bruton Memorial Library on June 21 due to a possible lice infestation, ... aspect of head lice: the parasite’s ability to live away from a human host, and ... necessary one in the event that lice have simply gotten out of control. , As ...
(Date:6/25/2016)... Oklahoma (PRWEB) , ... June 25, 2016 , ... ... both athletes and non-athletes recover from injury. Recently, he has implemented orthobiologic procedures ... Oklahoma City area —Johnson is one of the first doctors to perform the ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced ... feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as a ... has released tools for healthy coping following a traumatic event. , Trauma sufferers tend ...
(Date:6/24/2016)... , ... June 24, 2016 , ... Global law firm ... 2016 Legal Elite. The attorneys chosen by their peers for this recognition are considered ... Seven Greenberg Traurig Shareholders received special honors as members of this year’s Legal Elite ...
(Date:6/24/2016)... ... , ... People across the U.S. are sharpening their pencils and honing their ... in which patients and their families pay tribute to a genetic counselor by nominating ... of Genetic Counselors (NSGC) Annual Education Conference (AEC) this September. , In April, ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... 23, 2016 Any dentist who has made an ... current process. Many of them do not even offer this ... and high laboratory costs involved. And those who ARE able ... such a high cost that the majority of today,s patients ... Parsa Zadeh , founder of Dental Evolutions Inc. and ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on the ... announced that patient enrollment in its ongoing randomized ... has exceeded 50% of its 24-patient target. Capricor ... the third quarter of 2016, and to report ...
(Date:6/23/2016)... , June 23, 2016  Astellas today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with ... Latin America . ... ... ... ...
Breaking Medicine Technology: