Breast cancer redox heterogeneity detectable with chemical exchange saturation transfer (CEST) MRI.
Purpose: Tissue redox state is an important mediator of various biological processes in health and diseases such as cancer. Previously, we discovered that the mitochondrial redox state of ex vivo tissues detected by redox scanning (an optical imaging method) revealed interesting tumor redox state he...
| Publicado en: | Molecular Imaging & Biology Vol. 16; no. 5; pp. 670 - 680 |
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| Autores principales: | , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Oct2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109755440&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109755440 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15361632 KJU jtl: Molecular Imaging & Biology issn: 15361632 maglogo: N pubinfo: dt: Oct2014 vid: 16 iid: 5 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 109755440 NLM24811957 2012727954 10.1007/s11307-014-0739-y NLM24811957 PMC4251869 109755440 ppf: 670 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Breast cancer redox heterogeneity detectable with chemical exchange saturation transfer (CEST) MRI. aug: au: Cai, Kejia Xu, He N Singh, Anup Moon, Lily Haris, Mohammad Reddy, Ravinder Li, Lin Z affil: Department of Radiology, University of Illinois College of Medicine, Chicago, IL, USA, kcai@uic.edu. sug: subj: Breast Neoplasms Diagnosis Breast Neoplasms Metabolism Magnetic Resonance Imaging Methods Animals Female Cell Line, Tumor Mice Coenzymes Metabolism Oxidation-Reduction Female ab: Purpose: Tissue redox state is an important mediator of various biological processes in health and diseases such as cancer. Previously, we discovered that the mitochondrial redox state of ex vivo tissues detected by redox scanning (an optical imaging method) revealed interesting tumor redox state heterogeneity that could differentiate tumor aggressiveness. Because the noninvasive chemical exchange saturation transfer (CEST) MRI can probe the proton transfer and generate contrasts from endogenous metabolites, we aim to investigate if the in vivo CEST contrast is sensitive to proton transfer of the redox reactions so as to reveal the tissue redox states in breast cancer animal models.Procedures: CEST MRI has been employed to characterize tumor metabolic heterogeneity and correlated with the redox states measured by the redox scanning in two human breast cancer mouse xenograft models, MDA-MB-231 and MCF-7. The possible biological mechanism on the correlation between the two imaging modalities was further investigated by phantom studies where the reductants and the oxidants of the representative redox reactions were measured.Results: The CEST contrast is found linearly correlated with NADH concentration and the NADH redox ratio with high statistical significance, where NADH is the reduced form of nicotinamide adenine dinucleotide. The phantom studies showed that the reductants of the redox reactions have more CEST contrast than the corresponding oxidants, indicating that higher CEST effect corresponds to the more reduced redox state.Conclusions: This preliminary study suggests that CEST MRI, once calibrated, might provide a novel noninvasive imaging surrogate for the tissue redox state and a possible diagnostic biomarker for breast cancer in the clinic. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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