instrucfions): The goal of this project is to develop and test novel MR metabolic imaging approaches that will help to distinguish recurrent tumor from normal brain'and treatment effects in patients with glioblastoma (GBM). Characterizing temporal changes in tumor size and malignant potential is critically important for making fundamental decisions about patient care. The availability of imaging technologies that can provide more reliable metrics of tumor response to therapy and can identify progression at an early stage is critical for determining when to stop ineffective treatment and for selecting alternative strategies. We will integrate the multi-parametric imaging examination developed and validated in the current cycle of this P01 with novel H- 1 MR spectroscopic imaging techniques and new hyperpolarized C-13 metabolic imaging methods in order to develop improved mertics for evaluating the lesion. Linking in vivo imaging parameters with histological and genomic properties being studied in Project 2 and with information about therapeutic effects from Project 3 will provide important new strategies for selecting and evaluating novel therapeutics.
In Aim 1 we will develop and test a novel 3D H-1 MRSI sequence that provides automated prescription and significantly improved brain coverage for short echo (TE=20-35ms) spectral arrays. This will facilitate the estimation of in vivo levels of myo-lnositol in the same acquisition as choline, creatine and N-acetylasptate.
In Aim 2 we will utilize the unique experience and resources at UCSF to investigate the application of hyperpolarized C-13 MR metabolic imaging to patients with GBM. This exciting new technology has been shown in pre-clinical studies to differentiate tumor from normal tissue and provide a rapid assessment of response to therapy.
In Aim 3 we will use the techniques developed in Aims 1 and 2 in conjunction with image guided tissue sampling in order to determine wheytherthe following metabolic imaging parameters can improve upon the characterization of recurrent tumor and treatment effect: (i) the choline to N-acetylaspartate index, (ii) the ratio of myo-lnositol/choline and (ill) the ratio of hyperpolarized C-13 lactate/pyruvate.
In this Project we will integrate novel metabolic and physiological imaging methods with tissue studies in order to determine which metabolic imaging parameters are the most effective in distinguishing recurrent tumor from treatment effects. This will have a major impact upon the clincial management of patients with GBM and upon the evaluation of novel therapeutics.
|Mazor, Tali; Chesnelong, Charles; Pankov, Aleksandr et al. (2017) Clonal expansion and epigenetic reprogramming following deletion or amplification of mutant IDH1. Proc Natl Acad Sci U S A 114:10743-10748|
|Anwar, Mekhail; Molinaro, Annette M; Morin, Olivier et al. (2017) Identifying Voxels at Risk for Progression in Glioblastoma Based on Dosimetry, Physiologic and Metabolic MRI. Radiat Res 188:303-313|
|Venkatesan, Subramanian; Swanton, Charles; Taylor, Barry S et al. (2017) Treatment-Induced Mutagenesis and Selective Pressures Sculpt Cancer Evolution. Cold Spring Harb Perspect Med 7:|
|Autry, Adam; Phillips, Joanna J; Maleschlijski, Stojan et al. (2017) Characterization of Metabolic, Diffusion, and Perfusion Properties in GBM: Contrast-Enhancing versus Non-Enhancing Tumor. Transl Oncol 10:895-903|
|Zou, Xiaowei; Hart, Blaine L; Mabray, Marc et al. (2017) Automated algorithm for counting microbleeds in patients with familial cerebral cavernous malformations. Neuroradiology 59:685-690|
|Hayes, Josie; Yu, Yao; Jalbert, Llewellyn E et al. (2017) Genomic analysis of the origins and evolution of multicentric diffuse lower-grade gliomas. Neuro Oncol :|
|Wahl, Michael; Anwar, Mekhail; Hess, Christopher P et al. (2017) Relationship between radiation dose and microbleed formation in patients with malignant glioma. Radiat Oncol 12:126|
|Campbell, Brittany B; Light, Nicholas; Fabrizio, David et al. (2017) Comprehensive Analysis of Hypermutation in Human Cancer. Cell 171:1042-1056.e10|
|Park, Ilwoo; von Morze, Cornelius; Lupo, Janine M et al. (2017) Investigating tumor perfusion by hyperpolarized 13 C MRI with comparison to conventional gadolinium contrast-enhanced MRI and pathology in orthotopic human GBM xenografts. Magn Reson Med 77:841-847|
|Fan, QiWen; Aksoy, Ozlem; Wong, Robyn A et al. (2017) A Kinase Inhibitor Targeted to mTORC1 Drives Regression in Glioblastoma. Cancer Cell 31:424-435|
Showing the most recent 10 out of 67 publications