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Zhang Y, Sheng R, Yang C, Dai Y, Zeng M. Higher field reduced FOV diffusion-weighted imaging for abdominal imaging at 5.0 Tesla: image quality evaluation compared with 3.0 Tesla. Insights Imaging 2023; 14:171. [PMID: 37840062 PMCID: PMC10577120 DOI: 10.1186/s13244-023-01513-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/27/2023] [Indexed: 10/17/2023] Open
Abstract
OBJECTIVE To evaluate the image quality of reduced field-of-view (rFOV) DWI for abdominal imaging at 5.0 Tesla (T) compared with 3.0 T. METHODS Fifteen volunteers were included into this prospective study. All the subjects underwent the 3.0 T and 5.0 T MR examinations (time interval: 2 ± 1.9 days). Free-breathing (FB), respiratory-triggered (RT), and navigator-triggered (NT) spin-echo echo-planner imaging-based rFOV-DWI examinations were conducted at 3.0 T and 5.0 T (FB3.0 T, NT3.0 T, RT3.0 T, FB5.0 T, NT5.0 T, and RT5.0 T) with two b values (b = 0 and 800 s/mm2), respectively. The signal-to-noise ratio (SNR) of different acquisition approaches were determined and statistically compared. The image quality was assessed and statistically compared with a 5-point scoring system. RESULTS The SNRs of any 5.0 T DWI images were significantly higher than those of any 3.0 T DWI images for same anatomic locations. Moreover, 5.0 T rFOV-DWIs had the significantly higher sharpness scores than 3.0 T rFOV-DWIs. Similar distortion scores were observed at both 3.0 T and 5.0 T. Finally, RT5.0 T displayed the best overall image quality followed by NT5.0 T, FB5.0 T, RT3.0 T, NT3.0 T and FB3.0 T (RT5.0 T = 3.9 ± 0.3, NT5.0 T = 3.8 ± 0.3, FB5.0 T = 3.4 ± 0.3, RT3.0 T = 3.2 ± 0.4, NT3.0 T = 3.1 ± 0.4, and FB3.0 T = 2.7 ± 0.4, p < 0.001). CONCLUSION The 5.0 T rFOV-DWI showed better overall image quality and improved SNR compared to 3.0 T rFOV-DWI, which holds clinical potential for identifying the abdominal abnormalities in routine practice. CRITICAL RELEVANCE STATEMENT This study provided evidence that abdominal 5.0 Tesla reduced field of view diffusion-weighted imaging (5.0 T rFOV-DWI) exhibited enhanced image quality and higher SNR compared to its 3.0 Tesla counterparts, holding clinical promise for accurately visualizing abdominal abnormalities. KEY POINTS • rFOV-DWI was firstly integrated with high-field-MRI for visualizing various abdominal organs. • This study indicated the feasibility of abdominal 5.0 T-rFOV-DWI. • Better image quality was identified for 5.0 T rFOV-DWI.
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Affiliation(s)
- Yunfei Zhang
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, 200032, China
- Central Research Institute, United Imaging Healthcare, Shanghai, 201800, China
| | - Ruofan Sheng
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, 200032, China
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Chun Yang
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, 200032, China
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yongming Dai
- School of Biomedical Engineering, ShanghaiTech Univerisity, Shanghai, 200032, China.
| | - Mengsu Zeng
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, 200032, China.
- Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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2
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Liu Y, Zhang T, Li G, Li S, Li J, Zhao Q, Wu Q, Xu D, Hu X, Zhang L, Li Q, Zhang H, Liu B. Radiosensitivity enhancement by Co-NMS-mediated mitochondrial impairment in glioblastoma. J Cell Physiol 2020; 235:9623-9634. [PMID: 32394470 DOI: 10.1002/jcp.29774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 02/06/2023]
Abstract
We investigated the radiosensitizing effects of Co-NMS, a derivative of nimesulide based on a cobalt carbonyl complex, on malignant glioma cells. In the zebrafish exposed to Co-NMS ranging from 5 to 20 μM, cell death and heat shock protein 70 expression in the brain and neurobehavioral performance were evaluated. Our data showed that Co-NMS at 5 μM did not cause the appreciable neurotoxicity, and thereby was given as a novel radiation sensitizer in further study. In the U251 cells, Co-NMS combined with irradiation treatment resulted in significant inhibition of cell growth and clonogenic capability as well as remarkable increases of G2/M arrest and apoptotic cell population compared to the irradiation alone treatment. This demonstrated that the Co-NMS administration exerted a strong potential of sensitizing effect on the irradiated cells. With regard to the tumor radiosensitization of Co-NMS, it could be primarily attributed to the Co-NMS-derived mitochondrial impairment, reflected by the loss of mitochondrial membrane potential, the disruption of mitochondrial fusion and fission balance as well as redox homeostasis. Furthermore, the energy metabolism of the U251 cells was obviously suppressed by cotreatment with Co-NMS and irradiation through repressing mitochondrial function. Taken together, our findings suggested that Co-NMS could be a desirable drug to enhance the radiotherapeutic effects in glioblastoma patients.
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Affiliation(s)
- Yang Liu
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Taofeng Zhang
- Institute of Radiochemistry, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, China
| | - Guo Li
- School/Hospital of Stomatology, Lanzhou University, Lanzhou, China
| | - Sirui Li
- School/Hospital of Stomatology, Lanzhou University, Lanzhou, China
| | - Jili Li
- Institute of Medicinal Chemistry, School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Quanyi Zhao
- Institute of Medicinal Chemistry, School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Qingfen Wu
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Dan Xu
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoli Hu
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Luwei Zhang
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Qiang Li
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Hong Zhang
- Medical Physics Division, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Medicine, Chinese Academy of Sciences, Lanzhou, China.,School of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Bin Liu
- School/Hospital of Stomatology, Lanzhou University, Lanzhou, China
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3
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Wang J, Ni D, Shen Z, Ren Y, Liu Y, Fan W, Wu Y, Zhang G, Zhang H, Wu R, Feng X, Bu W, Yao Z. Exogenous Amino Acid-Loaded Nanovehicles: Stepping across Endogenous Magnetic Resonance Spectroscopy. Adv Healthc Mater 2018; 7:e1800317. [PMID: 30118170 DOI: 10.1002/adhm.201800317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/17/2018] [Indexed: 12/14/2022]
Abstract
Magnetic resonance spectroscopy (MRS) allows the assessment of metabolic contents and biochemical information in vivo. It provides essential compositional information in the diagnosis and monitoring of central nervous system (CNS) diseases, especially brain tumors. Conventional MRS is usually confined to endogenous metabolites that may lack specificity for certain disease such as differentiating glioma from other tumor and non-tumorous lesions. Therefore, exogenous MRS contrast agents (CAs) that may improve the sensitivity and specificity of MRS are highly desirable for its clinical use. In this work, a novel MRS CA, β-alanine loaded hollow mesoporous silica nanospheres, with a high biosafety profile and characteristic MRS spectrum was synthesized and investigated. This new CA is further tested to realize the accurate functional MRS diagnosis of brain glioma with high sensitivity. The general approach of synthesizing disease specific CA for MRS may lead to a new era of molecular imaging.
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Affiliation(s)
- Jing Wang
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
| | - Dalong Ni
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200062 P. R. China
| | - Zhiwei Shen
- Department of Radiology2nd Affiliated HospitalShantou University Shantou 515065 P. R. China
| | - Yan Ren
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
| | - Yanyan Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200062 P. R. China
| | - Wenpei Fan
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructuresShanghai Institute of CeramicsChinese Academy of Sciences Shanghai 200050 P. R. China
| | - Yue Wu
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
| | - Guishan Zhang
- Department of Radiology2nd Affiliated HospitalShantou University Shantou 515065 P. R. China
| | - Hua Zhang
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
| | - Renhua Wu
- Department of Radiology2nd Affiliated HospitalShantou University Shantou 515065 P. R. China
| | - Xiaoyuan Feng
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
| | - Wenbo Bu
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200062 P. R. China
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructuresShanghai Institute of CeramicsChinese Academy of Sciences Shanghai 200050 P. R. China
| | - Zhenwei Yao
- Department of RadiologyHuashan HospitalFudan University Shanghai 200040 P. R. China
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Li H, Cui Y, Li F, Shi W, Gao W, Wang X, Zeng Q. Measuring the lactate-to-creatine ratio via 1H NMR spectroscopy can be used to noninvasively evaluate apoptosis in glioma cells after X-ray irradiation. Cell Mol Biol Lett 2018; 23:27. [PMID: 29946338 PMCID: PMC6003206 DOI: 10.1186/s11658-018-0092-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 06/04/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Radiotherapy is among the commonly applied treatment options for glioma, which is one of the most common types of primary brain tumor. To evaluate the effect of radiotherapy noninvasively, it is vital for oncologists to monitor the effects of X-ray irradiation on glioma cells. Preliminary research had showed that PKC-ι expression correlates with tumor cell apoptosis induced by X-ray irradiation. It is also believed that the lactate-to-creatine (Lac/Cr) ratio can be used as a biomarker to evaluate apoptosis in glioma cells after X-ray irradiation. In this study, we evaluated the relationships between the Lac/Cr ratio, apoptotic rate, and protein kinase C iota (PKC-ι) expression in glioma cells. METHODS Cells of the glioma cell lines C6 and U251 were randomly divided into 4 groups, with every group exposed to X-ray irradiation at 0, 1, 5, 10 and 15 Gy. Single cell gel electrophoresis (SCGE) was conducted to evaluate the DNA damage. Flow cytometry was performed to measure the cell cycle blockage and apoptotic rates. Western blot analysis was used to detect the phosphorylated PKC-ι (p-PKC-ι) level. 1H NMR spectroscopy was employed to determine the Lac/Cr ratio. RESULTS The DNA damage increased in a radiation dose-dependent manner (p < 0.05). With the increase in X-ray irradiation, the apoptotic rate also increased (C6, p < 0.01; U251, p < 0.05), and the p-PKC-ι level decreased (C6, p < 0.01; U251, p < 0.05). The p-PKC-ι level negatively correlated with apoptosis, whereas the Lac/Cr ratio positively correlated with the p-PKC-ι level. CONCLUSION The Lac/Cr ratio decreases with an increase in X-ray irradiation and thus can be used as a biomarker to reflect the effects of X-ray irradiation in glioma cells.
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Affiliation(s)
- Hongxia Li
- Department of Radiology, the Second Hospital of Shandong University, Jinan, China
| | - Yi Cui
- Department of Radiology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012 China
| | - Fuyan Li
- Department of Radiology, Shandong Medical Imaging Research Institute, Jinan, China
| | - Wenqi Shi
- Department of Radiology, the Third Affiliated Hospital, Sun Yat- Sen University, Guangzhou, China
| | - Wenjing Gao
- Department of Radiology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012 China
| | - Xiao Wang
- Department of Radiology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012 China
| | - Qingshi Zeng
- Department of Radiology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012 China
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Lu Y, Zhang X, Zhao L, Yang C, Pan L, Li C, Liu K, Bai G, Gao H, Yan Z. Metabolic Disturbances in the Striatum and Substantia Nigra in the Onset and Progression of MPTP-Induced Parkinsonism Model. Front Neurosci 2018. [PMID: 29515360 PMCID: PMC5826279 DOI: 10.3389/fnins.2018.00090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Metabolic confusion has been linked to the pathogenesis of Parkinson's disease (PD), while the dynamic changes associated with the onset and progression of PD remain unclear. Herein, dynamic changes in metabolites were detected from the initiation to the development of 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) -induced Parkinsonism model to elucidate its potential metabolic mechanism. Ex vivo1H nuclear magnetic resonance (NMR) spectroscopy was used to measure metabolite changes in the striatum and substantia nigra (SN) of mice at 1, 7, and 21 days after injection of MPTP. Metabolomic analysis revealed a clear separation of the overall metabolites between PD and control mice at different time points. Glutamate (Glu) in the striatum was significantly elevated at induction PD day 1 mice, which persisted to day 21. N-acetylaspartate (NAA) increased in the striatum of induction PD mice on days 1 and 7, but no significant difference was found in striatum on day 21. Myo-Inositol (mI) and taurine (Tau) were also disturbed in the striatum in induction PD day 1 mice. Additionally, key enzymes in the glutamate-glutamine cycle were significantly increased in PD mice. These findings suggest that neuron loss and motor function impairment in induction PD mice may be linked to overactive glutamate-glutamine cycle and altered membrane metabolism.
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Affiliation(s)
- Yi Lu
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaoxia Zhang
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Liangcai Zhao
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Changwei Yang
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Linlin Pan
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Chen Li
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Kun Liu
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guanghui Bai
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hongchang Gao
- Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhihan Yan
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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Sakata A, Fushimi Y, Okada T, Arakawa Y, Kunieda T, Minamiguchi S, Kido A, Sakashita N, Miyamoto S, Togashi K. Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors. J Magn Reson Imaging 2017; 46:732-739. [PMID: 28252822 DOI: 10.1002/jmri.25597] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 11/28/2016] [Indexed: 11/11/2022] Open
Abstract
PURPOSE To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative grading in patients with brain tumor. MATERIALS AND METHODS Institutional Review Board approval and written informed consent were obtained. Forty-one patients with suspected brain tumors were enrolled in the study. Single-voxel MRS and 2D APT imaging of the same slice level were conducted using a 3T MRI scanner. Positive or negative contrast enhancement on T1 -weighted images was assessed by two neuroradiologists. Correlations among metabolite concentrations, metabolite ratios, and calculated histogram parameters, including mean APT (APTmean ) and the 90th percentile of APT (APT90 ) were assessed using Spearman's correlation coefficient. Diagnostic performance was evaluated with receiver operating characteristic (ROC) curve analysis for contrast enhancement and MRS and APT imaging. Values of P < 0.05 were considered statistically significant. RESULTS Positive correlations with statistical significance were found between total concentration of choline (Cho) and APT90 (r = 0.49), and between Cho/creatine (Cr) and APTmean (r = 0.65) as well as APT90 (r = 0.49). A negative correlation with statistical significance was observed between NAA/Cr and APTmean (r = -0.52). According to ROC curves, Cho/Cr, APTmean , APT90 , demonstrated higher area under the curve (AUC) values than that of contrast enhancement in grading gliomas. CONCLUSION Significant correlations were observed between metabolite concentrations and ratios on MRS and APT values. MRS and APT imaging showed comparable diagnostic capability for grading brain tumors, suggesting that both MRS and APT imaging offer potential for quantitatively assessing similar biological characteristics in brain tumors on noncontrast MRI. LEVEL OF EVIDENCE 2 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:732-739.
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Affiliation(s)
- Akihiko Sakata
- Kyoto University Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Yasutaka Fushimi
- Kyoto University Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Tomohisa Okada
- Kyoto University Graduate School of Medicine, Human Brain Research Center, Kyoto, Japan
| | - Yoshiki Arakawa
- Kyoto University Graduate School of Medicine, Department of Neurosurgery, Kyoto, Japan
| | - Takeharu Kunieda
- Kyoto University Graduate School of Medicine, Department of Neurosurgery, Kyoto, Japan
| | - Sachiko Minamiguchi
- Kyoto University Graduate School of Medicine, Department of Diagnostic Pathology, Kyoto, Japan
| | - Aki Kido
- Kyoto University Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Naotaka Sakashita
- Toshiba Medical Systems Corporations, MRI Systems Development Department, Otawara, Japan
| | - Susumu Miyamoto
- Kyoto University Graduate School of Medicine, Department of Neurosurgery, Kyoto, Japan
| | - Kaori Togashi
- Kyoto University Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
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Li H, Xu Y, Shi W, Li F, Zeng Q, Yi C. Assessment of alterations in X-ray irradiation-induced DNA damage of glioma cells by using proton nuclear magnetic resonance spectroscopy. Int J Biochem Cell Biol 2017; 84:109-118. [PMID: 28122253 DOI: 10.1016/j.biocel.2017.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 01/15/2017] [Accepted: 01/18/2017] [Indexed: 12/25/2022]
Abstract
Glioma is one of the most common types of brain tumors. DNA damage is closely associated with glioma cell apoptosis induced by X-ray irradiation. Alterations of metabolites in glioma can be detected noninvasively by proton nuclear magnetic resonance (1H NMR) spectroscopy. To noninvasively explore the micro mechanism in X-ray irradiation-induced apoptosis, the relationship between metabolites and DNA damage in glioma cells was investigated. Three glioma cell lines (C6, U87 and U251) were randomly designated as control (0Gy) and treatment groups (1, 5, 10, 15Gy). After X-ray exposure, each group was separated into four parts: (i) to detect metabolites by 1H NMR spectroscopy; (ii) to make cell colonies; (iii) to detect cell cycle distribution and apoptosis rate by flow cytometry; and (iv) to measure DNA damage by comet assay. The metabolite ratios of lactate/creatine and succinate/creatine decreased (lactate/creatine: C6, 22.17-66.27%; U87, 15.93-44.56%; U251, 26.27-74.48%. succinate/creatine: C6, 14.41-48.35%; U87, 22.03-70.62%; U251, 17.33-60.06%) and choline/creatine increased (C6, 52.22-389.68%; U87, 56.15-82.36%; U251, 31.87-278.62%) in the treatment groups compared with the control group (each P<0.05), which linearly depended on DNA damage. An increasing dose of X-ray irradiation increased numbers of apoptotic cells (P<0.01), and the DNA damage parameters were dose-dependent (P<0.05). The colony-forming rate declined (P<0.01) and the percentage of cells at G1 stage increased when exposed to 1Gy X-ray (three cell lines, P<0.05). Metabolite alterations detected by 1H NMR spectroscopy can be used to determine DNA damage induced by X-ray irradiation. 1H NMR spectroscopy is a noninvasive method to predict DNA damage of glioma cell at the micro level.
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Affiliation(s)
- Hongxia Li
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Yanjie Xu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Wenqi Shi
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Fuyan Li
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Qingshi Zeng
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China.
| | - Cui Yi
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
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He T, Qiu T, Wang X, Gui H, Wang X, Hu Q, Xia H, Qi G, Wu J, Ma H. Multivoxel magnetic resonance spectroscopy identifies enriched foci of cancer stem-like cells in high-grade gliomas. Onco Targets Ther 2017; 10:195-203. [PMID: 28115854 PMCID: PMC5221654 DOI: 10.2147/ott.s118834] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE This study investigated the correlation between choline/creatine (Cho/Cr) ratios determined by multivoxel proton magnetic resonance spectroscopy (1H-MRS) and the distribution of cancer stem-like cells (CSLCs) in high-grade gliomas. PATIENTS AND METHODS Sixteen patients with high-grade gliomas were recruited and underwent 1H-MRS examination before surgery to identify distinct tumor regions with variable Cho/Cr ratios. Using intraoperative neuronavigation, tumor tissues were accurately sampled from regions with high and low Cho/Cr ratios within each tumor. The distribution of CSLCs in samples from glioma tissue regions with different Cho/Cr ratios was quantified by neurosphere culture, immunohistochemistry, and Western blot. RESULTS The mean neurosphere formation rate in tissues with high Cho/Cr ratios was significantly increased compared with that in low Cho/Cr ratio tissues (13.94±5.94 per 100 cells vs 8.04±3.99 per 100 cells, P<0.001). Immunohistochemistry indicated that tissues with high Cho/Cr ratios had elevated expression of CD133, nestin, and CD15, relative to low Cho/Cr ratio tissue samples (23.6%±3.8% vs 18.3%±3.3%, 25.2%±4.5% vs 19.8%±2.8%, 24.5%±3.8% vs 17.8%±2.2%, respectively; all P<0.001). Western blot demonstrated that relative CD133 and nestin protein expression in high Cho/Cr ratio regions was significantly higher than that in low Cho/Cr ratio tissue samples (0.50±0.17 vs 0.30±0.08, 0.45±0.13 vs 0.27±0.07, respectively; both P<0.001). The protein expression levels of CD133 and nestin were highly correlated with Cho/Cr ratios (r=0.897 and r=0.861, respectively). CONCLUSION Cho/Cr ratios correlate with the distribution of CSLCs in high-grade gliomas, and this may assist in identifying foci enriched with CSLCs and thus improve the management of high-grade gliomas.
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Affiliation(s)
- Tao He
- Clinical Medicine College, Ningxia Medical University; Department of Neurosurgery, General Hospital of Ningxia Medical University; Ningxia Key Laboratory of Cerebrocranial Diseases, The National Key Laboratory Incubation Base, Yinchuan
| | - Tianming Qiu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai
| | - Xiaodong Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan, People's Republic of China
| | - Hongxing Gui
- Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School of Rutgers University, Piscataway, NJ, USA
| | - Xilong Wang
- Department of Neurosurgery, General Hospital of Ningxia Medical University
| | - Qikuan Hu
- Ningxia Key Laboratory of Cerebrocranial Diseases, The National Key Laboratory Incubation Base, Yinchuan; Department of Physiology, Ningxia Medical University, Yinchuan, People's Republic of China
| | - Hechun Xia
- Department of Neurosurgery, General Hospital of Ningxia Medical University
| | - Gaoyang Qi
- Clinical Medicine College, Ningxia Medical University; Department of Neurosurgery, General Hospital of Ningxia Medical University
| | - Jinsong Wu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai
| | - Hui Ma
- Department of Neurosurgery, General Hospital of Ningxia Medical University
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Xu YJ, Cui Y, Li HX, Shi WQ, Li FY, Wang JZ, Zeng QS. Noninvasive evaluation of radiation-enhanced glioma cells invasiveness by ultra-high-field (1)H-MRS in vitro. Magn Reson Imaging 2016; 34:1121-7. [PMID: 27215950 DOI: 10.1016/j.mri.2016.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/16/2016] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Glioma is the most common type of the primary CNS tumor. Radiotherapy is an important treatment measure after surgery. However, its highly invasive character is the main reason of postoperative recurrence. The aim of the study was to probe the correlation between the invasion ability and the metabolite characteristics of glioma cells at the cellular level after irradiation by using 14.7T high-resolution nuclear proton magnetic resonance spectroscopy ((1)H-MRS). METHODS To determine the matrix metalloproteinase-2 (MMP-2) activity and metabolite ratios of glioma cells after irradiation with different doses of X-rays, U87 and C6 glioma cells were exposed to X-ray irradiation of 0, 1, 5, 10, and 15Gy. After 20h, the perchloric acid (PCA) extraction method was used to evaluate water-soluble metabolites [choline (Cho), creatine (Cr), and N-acetylaspartate (NAA)], and (1)H-MRS patterns and changes in metabolite ratios were observed in vitro by 14.7T high resolution (1)H-MRS. Matrigel invasion assays and gelatin zymography were performed to test the invasion ability of U87 and C6 glioma cells. RESULTS Good MR spectra were obtained from PCA method extracts of U87 and C6 glioma cells. Both radiation-induced MMP-2 activity and the Cho/Cr and Cho/NAA ratios increased after irradiation, and their increase occurred in a dose-dependent manner. The MMP-2 activity and the Cho/Cr and Cho/NAA ratios of glioma cells increased after irradiation up to 10Gy and decreased thereafter. In particular, the Cho/NAA ratio of U87 cells increased from 3.55±0.06 (0Gy) to 9.13±0.30 (10Gy) and then declined to 5.94±0.15 (15Gy). Furthermore, the invasion ability of glioma cells had a strong positive correlation with the Cho/Cr and Cho/NAA ratios. Both the Cho/Cr ratio and the Cho/NAA ratio of U87 glioma cells were highly positively correlated with the number of invading cells in the Matrigel invasion assay. The Pearson's correlation coefficient (r) values of U87 cells were 0.89 (Cho/Cr ratio versus invasion ability) and 0.91 (Cho/NAA ratio versus invasion ability) (P<0.01). C6 cells exhibited similar changes to those of U87 cells. CONCLUSIONS In vitro high-resolution (1)H-MRS is useful for detecting glioma invasiveness at the cellular level.
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Affiliation(s)
- Yan-Jie Xu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Yi Cui
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Hong-Xia Li
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Wen-Qi Shi
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Fu-Yan Li
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Jian-Zheng Wang
- Department of Radiotherapy, Qilu Hospital of Shandong University, Jinan, China
| | - Qing-Shi Zeng
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China.
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