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Noninvasive MR imaging of blood vessel growth in tumors using nanosized contrast agents
Date:7/23/2010

This release is also available in Chinese.

Formation of new blood vessels, also known as angiogenesis, is crucial for sustained tumor growth and cancer metastasis. Recently, clinically available therapies to suppress the growth of these vessels have been available to improve patient survival in some cancer types. Accurate detection and quantification of blood vessel growth using nonsurgical methods would greatly complement current therapies and allow physicians to quickly assess treatment regimens and adjust them as necessary. In the work published in the August issue of Experimental Biology and Medicine, Kessinger and coworkers have incorporated nanotechnology, material science, and the clinical imaging modality MRI, to create a nanosized probe capable of noninvasively visualizing and quantifying the blood vessel growth in tumors in a preclinical model. The work was carried out by Chase Kessinger, as part of his PhD thesis in cancer molecular imaging, working together with Jinming Gao and other colleagues, at the University of Texas Southwestern Medical Center at Dallas.

Dr. Gao stated "Imaging tumor angiogenesis is important in early detection, tumor stratification and post-therapy assessment of antiangiogenic drugs. Current clinical modality for angiogenesis imaging utilizes dynamic contrast enhancement MRI by small molecular contrast agents. The method is based on the measurement of permeability of the contrast probes in well-established solid tumors and is not very specific to detect the early on-set of vessel formation. The dual functional nanoprobes aim to image angiogenesis-specific tumor markers that are overly expressed in the tumor vasculature during the early phase of angiogenesis."

Together, the research team relied on nanotechnology and established super paramagnetic micellar nanoprobes (50-70 nm in diameter) with gr
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Contact: Dr. Jinming Gao
jinming.gao@utsouthwestern.edu
214-645-6370
Society for Experimental Biology and Medicine
Source:Eurekalert

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