Navigation Links
Faulty proteins may prove significant in identifying new treatments for ovarian cancer
Date:1/13/2012

PORTLAND, Ore. -- A constellation of defective proteins suspected in causing a malfunction in the body's ability to repair its own DNA could be the link scientists need to prove a new class of drugs will be effective in treating a broad range of ovarian cancer patients, an Oregon Health & Science University Knight Cancer Institute study found.

These research results, published this week in PLoS ONE, have prompted additional exploration into whether the patient population included in clinical trials for drugs that target the enzyme poly ADP ribose polymerase (PARP) should be expanded. Several forms of cancer are more dependent on PARP for their growth than regular cells, which means that targeting these enzymes when they go haywire is a potentially effective way to treat ovarian cancer. Currently PARP inhibitors are being tested with patients who have two types of malfunctioning proteins, BRCA1 or BRCA2. But, the OHSU Knight Cancer Institute study of additional proteins, beyond BRCA proteins, suggests that they too are playing a role in driving ovarian cancer.

Tapping into the potential of PARP inhibitors could change the dynamics of ovarian cancer treatment. There has not been a substantial increase in treatment options for ovarian cancer in the past two decades, said Tanja Pejovic, M.D., Ph.D., gynecologic oncologist at the OHSU Knight Cancer Institute. Pejovic, who led the study of these additional defective proteins, added that the results provide evidence that further research into the role of multiple proteins is warranted.

Only about 10 to 15 percent of women with ovarian cancer have BRCA 1 or BRCA 2 mutations.

Pejovic's study of 186 patients with nonhereditary cancer found that 41 percent who had an early recurrence of the disease also had abnormal levels of the other proteins tracked. In contrast, only 19.5 percent of patients who hadn't yet had a recurrence of the disease in three years had abnormal levels of these proteins.

"If we are able to identify the proteins that differentiate these patients at risk for early recurrence, this would open up a new direction in ovarian cancer treatment," Pejovic said.
'/>"/>

Contact: Elisa Williams
willieli@ohsu.edu
503-494-8231
Oregon Health & Science University
Source:Eurekalert

Related biology news :

1. Faulty molecular switch can cause infertility or miscarriage
2. Faulty gene linked to disorders of sexual development
3. Faulty clean-up process may be key event in Huntingtons disease
4. Penn scientists pioneer new method for watching proteins fold
5. Lets do the twist: Spiral proteins are efficient gene delivery agents
6. Control by the matrix: RUB researchers decipher the role of proteins in the cell environment
7. Cellular processing of proteins found in Congolese child birthing tea now revealed
8. Targeted antibacterial proteins may offer antibiotic alternative
9. New technique enables study of challenging proteins
10. So many proteins, so much promise
11. Exercise before and during early pregnancy increases two beneficial proteins for mothers-to-be
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/11/2017)... , Jan. 11, 2017 Intoxalock, a leading ... the release of its patent-pending calibration device. With this ... perform calibrations, securely upload data logs and process repairs ... customer. "Fighting drunk driving through the application ... public at large, but also for the customer who ...
(Date:1/6/2017)... Jan. 6, 2017  Privately-held CalciMedica, Inc., announced ... healthy volunteers of a novel calcium release-activated calcium ... pancreatitis. Acute pancreatitis, sudden painful ... disorder, but can be very serious.  In severe cases ... where extended hospital stays, time in the ICU ...
(Date:1/6/2017)... 5, 2017  Delta ID Inc., a leader in ... for automotive at CES® 2017. Delta ID has collaborated ... demonstrate the use of iris scanning as a secure, ... driver in a car, and as a way to ... Delta ID and Gentex will demonstrate (booth ...
Breaking Biology News(10 mins):
(Date:1/21/2017)... Interpace Diagnostics Group, Inc. (NASDAQ: IDXG)("Interpace" ... useful molecular diagnostic tests and pathology services, today ... purchase agreement with three  institutional investors to purchase ... in a registered direct offering.  In a concurrent ... to the same investors warrants to purchase 855,000 ...
(Date:1/21/2017)... Jan. 20, 2017 Aratana Therapeutics, Inc. (NASDAQ: ... on the licensing, development and commercialization of innovative biopharmaceutical ... Best Company in North America ... award based on the FDA approval of three ... ENTYCE ® (capromorelin oral solution) and NOCITA ® ...
(Date:1/20/2017)... , ... January 20, 2017 , ... The two newest ... treatment options for patients. Vironika, a spin out from The Wistar Institute, and Sanguis, ... lab space at 3624 Market Street. , Vironika is developing a treatment for ...
(Date:1/20/2017)... , Jan. 20, 2017 Ginkgo ... of Gen9, a pioneer in the synthesis and ... unique expertise in assembling pathway-length synthetic DNA into ... and capacity in the construction of new organism ... industries. "Gen9 was founded to significantly ...
Breaking Biology Technology: