This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. The general objective of this research project is to develop ultra-sensitive MRI probes. One approach is based on MFe2O4 (M=Fe, Co Mn)-loaded polymer micelles for cancer molecular imaging applications. The low sensitivity of conventional MR contrast agents severely limits their use for monitoring molecular processes in vivo. Another approach is to used superparamagnetic iron oxide nanoparticles (SPIO). The growing use of SPIO in molecular imaging, cell tracking and biomolecular detection has resulted in the rapid development of novel SPIO formulations and imaging acquisition methods. Compared to the low molecular weight, paramagnetic metal chelates such as Gd-DTPA (T1 contrast agent), SPIO nanoparticles are considered T2-negative contrast agents with substantially higher T1 and T2 relaxivity. Conventionally, SPIO particles are evaluated by T2- or T2*-weighted MR imaging for their abilities in dephasing water signals. Image void at high SPIO concentrations and requirement of a pre-contrast scan limit the accuracy and specificity for SPIO detection. A recent objective is to develop and apply an off-resonance saturation (ORS) method to allow for on-and-off imaging of ?v?3-targeted SPIO-loaded polymeric micelles for molecular imaging of solid tumors. The RR has provided access to the 4.7 T, the workhorse for us. Iniitially the imaging was performed by Dr. Jimin Ren, supported by the Research Resource. Dr. Ren trained two post - doctoral fellows, Drs. Charlie Khemtong and Chase Kessinger, and now all imaging is performed by Dr. Gao's team.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
2P41RR002584-24
Application #
8363911
Study Section
Special Emphasis Panel (ZRG1-SBIB-U (40))
Project Start
2011-09-01
Project End
2012-07-31
Budget Start
2011-09-01
Budget End
2012-07-31
Support Year
24
Fiscal Year
2011
Total Cost
$16,082
Indirect Cost
Name
University of Texas Sw Medical Center Dallas
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
800771545
City
Dallas
State
TX
Country
United States
Zip Code
75390
Funk, Alexander M; Anderson, Brian L; Wen, Xiaodong et al. (2017) The rate of lactate production from glucose in hearts is not altered by per-deuteration of glucose. J Magn Reson 284:86-93
Mishkovsky, Mor; Anderson, Brian; Karlsson, Magnus et al. (2017) Measuring glucose cerebral metabolism in the healthy mouse using hyperpolarized 13C magnetic resonance. Sci Rep 7:11719
Moreno, Karlos X; Harrison, Crystal E; Merritt, Matthew E et al. (2017) Hyperpolarized ?-[1-13 C]gluconolactone as a probe of the pentose phosphate pathway. NMR Biomed 30:
Zhang, Liang; Habib, Amyn A; Zhao, Dawen (2016) Phosphatidylserine-targeted liposome for enhanced glioma-selective imaging. Oncotarget 7:38693-38706
Malloy, Craig R; Sherry, A Dean (2016) Biochemical Specificity in Human Cardiac Imaging by 13C Magnetic Resonance Imaging. Circ Res 119:1146-1148
Wu, Yunkou; Zhang, Shanrong; Soesbe, Todd C et al. (2016) pH imaging of mouse kidneys in vivo using a frequency-dependent paraCEST agent. Magn Reson Med 75:2432-41
Walker, Christopher M; Merritt, Matthew; Wang, Jian-Xiong et al. (2016) Use of a Multi-compartment Dynamic Single Enzyme Phantom for Studies of Hyperpolarized Magnetic Resonance Agents. J Vis Exp :e53607
Moss, Lacy R; Mulik, Rohit S; Van Treuren, Tim et al. (2016) Investigation into the distinct subcellular effects of docosahexaenoic acid loaded low-density lipoprotein nanoparticles in normal and malignant murine liver cells. Biochim Biophys Acta 1860:2363-2376
Xing, Yixun; Jindal, Ashish K; Regueiro-Figueroa, Martín et al. (2016) The Relationship between NMR Chemical Shifts of Thermally Polarized and Hyperpolarized 89 Y Complexes and Their Solution Structures. Chemistry 22:16657-16667
Jin, Eunsook S; Moreno, Karlos X; Wang, Jian-Xiong et al. (2016) Metabolism of hyperpolarized [1-(13)C]pyruvate through alternate pathways in rat liver. NMR Biomed 29:466-74

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