Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
RANDOX LABORATORIES

Events

06 Jun 2016 - 09 Jun 2016
22 Jun 2016 - 24 Jun 2016
04 Jul 2016 - 06 Jul 2016

Erythropoietin Found Involved in Origin and Metastasis of Cancer

By BiotechDaily International staff writers
Posted on 19 Dec 2011
Print article
Researchers have demonstrated that a platelet-derived growth factor-BB (PDGF-BB) and the blood protein erythropoietin (EPO) are involved in the development of cancerous tumors and that they combine to help the tumors flourish in the body. These new preclinical findings offer new potential for suppressing tumor growth and bypassing difficulties of resistance that exist with many drugs in current use.

The study’s findings were published online December 4, 2011, in the journal Nature Medicine. Angiogenesis is the formation of new blood vessels from preexisting ones, and is one of the most important research fields in the treatment of such diverse disorders such as cancer, metastases, obesity, heart disease, stroke, diabetes, and chronic inflammation. The process is also important in healthy individuals for wound healing, the menstrual cycle, and other normal processes. Prof. Yihai Cao and his coworkers from the Karolinska Institute (Stockholm, Sweden) are examining the angiogenesis process and its ties to cancer and other disorders, and in the present study, they revealed the critical role played by growth factor PDGF-BB.

“It’s a member of the PDGF family and significantly contributes to blood vessel development, which is one of the characteristic signs of cancer,” said Prof. Yihai Cao. Our preclinical findings suggest that PDGF-BB causes systemic effects in the body, which is to say that rather than being active locally it goes into the blood and interferes with the function of several organs so that the entire body is affected.”

The studies were conducted on lab mice, and in this study, the investigators were able to demonstrate that when the growth factor PDGF-BB binds to its receptors, it stimulates the blood protein EPO, which then regulates the production of red blood cells that provide more oxygen for tumor growth and metastasis. “EPO has several functions,” remarked Prof. Cao. “It produces more blood and stimulates angiogenesis, and we have revealed the underlying mechanism. It also stimulates tumor angiogenesis by directly stimulating the proliferation, migration, and growth of endothelial cells and their ability to form the so-called epithelial tube. PDGF-BB promotes the stimulation of extramedullary hematopoiesis, enlargement of the liver and spleen, which increases oxygen perfusion and protection against anemia.”

The introduction of PDGF-BB in mice therefore increases erythropoietin production and the hematopoietic parameters. Moreover, EPO may directly act on tumor cells to stimulate their growth and metastasis. “We believe that the increase in EPO might be responsible for tumoral resistance to antiangiogenetic drugs, which only target PDGF ligands. The combination of drugs targeted at both PDGF and EPO has potential superior therapeutic benefits,” stated Prof. Yihai Cao, adding that they will continue to research mouse models and assess opportunities for clinical studies on patients.

Prof. Yihai Cao is also affiliated to Linköping University (Linköping, Sweden). Researchers from Karolinska Institute, Linköping University, and the University of Toyama (Toyama, Japan) contributed to the study.

Related Links:

Karolinska Institute
Linköping University
University of Toyama




Print article

Channels

Drug Discovery

view channel

Experimental Small-Molecule Anticancer Drug Blocks RAS-binding Domains

The experimental small-molecule anticancer drug rigosertib was shown to block tumor growth by acting as an RAS-mimetic and interacting with the RAS binding domains of RAF kinases, resulting in their inability to bind to RAS, which inhibited the RAS-RAF-MEK pathway. Oncogenic activation of RAS genes due to point mutations... Read more

Biochemistry

view channel
Image: A space-filling model of the anticonvulsant drug carbamazepine (Photo courtesy of Wikimedia Commons).

Wastewater May Contaminate Crops with Potentially Dangerous Pharmaceuticals

Reclaimed wastewater used to irrigate crops is contaminated with pharmaceutical residues that can be detected in the urine of those who consumed such produce. Investigators at the Hebrew University... Read more

Lab Technologies

view channel

Huge Modifiable Biomedical Database to Be Available on the Wikidata Site

Genome researchers are exploiting the power of the open Internet community Wikipedia database to create a comprehensive resource for geneticists, molecular biologists, and other interested life scientists. While efficiency in generating scientific data improves almost daily, applying meaningful relationships between... Read more

Business

view channel

European Biotech Agreement to Promote Antigen-Drug Conjugation Technology

Two European biotech companies have joined forces to exploit and commercialize an innovative, site-specific ADC (antigen-drug conjugate) conjugation technology. ProBioGen (Berlin, Germany), a company specializing in the development and manufacture of complex glycoproteins and Eucodis Bioscience (Vienna, Austria), a... Read more
Copyright © 2000-2016 Globetech Media. All rights reserved.