Navigation Links
Combined inhibition of VEGF and c-MET can decrease metastasis
Date:2/24/2012

  • Inhibition of VEGF increased c-MET expression in tumors.
  • Invasion and metastasis were blocked by inhibition of VEGF plus c-MET.
  • Dual VEGF/c-MET inhibitors are in late-stage clinical trials.

PHILADELPHIA Dual inhibition of vascular endothelial growth factor and c-MET signaling inhibited tumor invasion and metastasis in a laboratory model of pancreatic neuroendocrine cancer, according to a paper published in Cancer Discovery, the newest journal of the American Association for Cancer Research.

"Inhibition of VEGF signaling plus c-MET signaling results in a synergistic effect on tumors that leads to slowing of tumor growth and decreased invasiveness and metastasis," said lead researcher Donald M. McDonald, M.D., Ph.D., a professor at the University of California San Francisco Comprehensive Cancer Center.

Previous laboratory research had shown that inhibition of VEGF signaling with agents like bevacizumab or sunitinib can give rise to a number of side effects including increased tumor invasion and metastasis.

What was not known was whether anti-VEGF therapy results in elevated c-MET expression, which has been previously shown to promote tumor cell invasiveness and metastasis. To determine this, McDonald and colleagues conducted a two-phase laboratory study. They treated mice engineered to develop pancreatic neuroendocrine tumors with an anti-VEGF antibody, which reduced tumor size but increased invasiveness and metastasis. This treatment also increased tumor hypoxia and expression and activity of c-MET.

However, when both VEGF and c-MET signaling were inhibited simultaneously, there was a reduction in invasion and metastasis. The researchers tested three c-MET inhibitors: crizotinib and PF-04217903, which target c-MET but not VEGF signaling, and cabozantinib, a dual inhibitor that blocks VEGF and c-MET signaling.

McDonald said they conducted their initial study in neuroendocrine pancreatic tumors because the genetic mouse model of these tumors has been studied so extensively, and then observed the effect in other tumors as well.

"The intent of this study was to explore a mechanism, and there is no indication that this effect will be confined to pancreatic tumors," he said.


'/>"/>

Contact: Jeremy Moore
Jeremy.Moore@aacr.org
215-446-7109
American Association for Cancer Research
Source:Eurekalert

Related medicine news :

1. Combined oral contraceptive pill helps painful periods
2. PSA testing, combined with other relevant patient data can reduce unnecessary prostate biopsies
3. Combined arterial imaging technology reveals both structural and metabolic details
4. Novel combined therapy extends life, diminishes pain in brain cancer patients
5. Ultrasound combined with pre-operative MRI is cost effective in evaluating rotator cuff tears
6. Combined imaging technologies may better identify cancerous breast lesions
7. Combined BRAF-targeted and immunotherapy shows promise for melanoma treatment
8. Vandetanib shows clinical benefit when combined with docetaxel for lung cancer
9. New Laser Technology Combined with Manual Physical Therapy Offer Pain Relief to Chronic Pain Sufferers
10. Singapore Performs Asia's First Combined Heart and Liver Transplant
11. Promega Maxwell 16 IVD System CE Marked to the European Union IVD Directive Delivers Combined Solution for Infectious Disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/12/2017)... ... October 12, 2017 , ... First Healthcare ... program management, will showcase a range of technology and learning solutions at the ... Convention and Expo to be held October 14–18, 2017 at the Mandalay Bay ...
(Date:10/12/2017)... ... October 12, 2017 , ... The company has developed a ... and regulatory authorities worldwide. From Children’s to Adults 50+, every formula has been ... standard. , These products are also: Gluten Free, Non-GMO, Vegan, Soy Free, ...
(Date:10/12/2017)... ... ... Asante, a nationally recognized health system in southern Oregon, ... health joint venture through an agreement, effective October 1, 2017, to create AccentCare ... company with Asante, delivering clinically integrated care, for the past eight years. This ...
(Date:10/12/2017)... ... ... HMP , a leader in healthcare events and education, today announced that ... for ‘Best B-to-B Healthcare Website.’ Winners were announced during the Eddie & Ozzie Awards ... recognizes editorial and design excellence across a range of sectors. This year’s program included ...
(Date:10/12/2017)... ... October 12, 2017 , ... Women-owned and Grand Rapids-based ... and Brightest in Wellness® by Best and Brightest. OnSite Wellness will be honored ... 20 from 7:30 a.m. to 2 p.m. at the Henry Autograph Collection Hotel, ...
Breaking Medicine News(10 mins):
(Date:10/5/2017)... Ill. , Oct. 5, 2017  In ... Association of Oral and Maxillofacial Surgeons (AAOMS) released ... opioids – to be used as a first-line ... pain. Recognizing ... the AAOMS White Paper "Opioid Prescribing: Acute and ...
(Date:10/4/2017)... , Oct. 4, 2017  According to the Centers for Disease ... end of October . PhysicianOne Urgent Care is helping communities across ... Westchester, NY , by offering no-cost* flu shots through the end ... mandated by certain health insurance regulations. ... The best time to get a flu shot is by the end ...
(Date:10/2/2017)... Mich. , Oct. 2, 2017 Diplomat ... 8th Day Software and Consulting, LLC , and ... 8th Day Software, based in Tennessee ... LLC. 8th Day expands EnvoyHealth,s service offerings for health ... development. "In an ...
Breaking Medicine Technology: