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Song Q, Tian S, Ma C, Meng X, Chen L, Wang N, Lin L, Wang J, Song Q, Liu A. Amide proton transfer weighted imaging combined with dynamic contrast-enhanced MRI in predicting lymphovascular space invasion and deep stromal invasion of IB1-IIA1 cervical cancer. Front Oncol 2022; 12:916846. [PMID: 36172148 PMCID: PMC9512406 DOI: 10.3389/fonc.2022.916846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 08/08/2022] [Indexed: 12/09/2022] Open
Abstract
Objectives To investigate the value of amide proton transfer weighted (APTw) imaging combined with dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in predicting intermediate-risk factors of deep stromal invasion (DSI) and lymphovascular vascular space invasion (LVSI) in cervical cancer. Methods Seventy patients with cervical cancer who underwent MRI before operation from July 2019 to February 2022 were retrospectively included in this study. Clinical information including age, histologic subtype etc. were recorded for patients. ATPw imaging parameter APTmean and DCE-MRI parameters Ktrans, Kep and Ve were measured and analyzed. The independent-sample t-test, Mann-Whitney U test, or Chi-square test was used to compare the differences of parameters between DSI/LVSI positive and negative groups. Logistic analysis was used to develop a combined predictive model. The receiver operating characteristic curve was for predictive performance. ANOVA and Kruskal-Wallis test were used to compare the differences of consecutive parameters among multiple groups. Results Ktrans and SCC-Ag were independent factors in predicting DSI; Ktrans+SCC-Ag had the highest AUC 0.819 with sensitivity and specificity of 71.74% and 91.67%, respectively. APTmean and Ktrans were independent factors in predicting LVSI; APTmean+Ktrans had the highest AUC 0.874 with sensitivity and specificity of 92.86% and 75.00%, respectively. Ktrans and Ve could discriminate coexistence of DSI and LVSI from presence of single one, APTmean could discriminate the presence of DSI or LVSI from no risk factor presence. Conclusion The combination of APTw and DCE-MRI is valuable in predicting intermediate-risk factors of DSI and LVSI in cervical cancer.
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Affiliation(s)
- Qingling Song
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Shifeng Tian
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Changjun Ma
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Xing Meng
- Department of Radiology, Dalian Women and Children’s Medical Group, Dalian, China
| | - Lihua Chen
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Nan Wang
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Liangjie Lin
- Clinical & Technical Support, Philips Healthcare, Beijing, China
| | - Jiazheng Wang
- Clinical & Technical Support, Philips Healthcare, Beijing, China
| | - Qingwei Song
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Ailian Liu
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, China
- *Correspondence: Ailian Liu,
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Watson EE, Russo F, Moreau D, Winssinger N. Optochemical Control of Therapeutic Agents through Photocatalyzed Isomerization. Angew Chem Int Ed Engl 2022; 61:e202203390. [PMID: 35510306 PMCID: PMC9400970 DOI: 10.1002/anie.202203390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Indexed: 12/04/2022]
Abstract
A Ru(bpy)3Cl2 photocatalyst is applied to the rapid trans to cis isomerization of a range of alkene‐containing pharmacological agents, including combretastatin A‐4 (CA‐4), a clinical candidate in oncology, and resveratrol derivatives, switching their configuration from inactive substances to potent cytotoxic agents. Selective in cellulo activation of the CA‐4 analog Res‐3M is demonstrated, along with its potent cytotoxicity and inhibition of microtubule dynamics.
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Affiliation(s)
- Emma E. Watson
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Francesco Russo
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Dimitri Moreau
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Nicolas Winssinger
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
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Watson EE, Russo F, Moreau D, Winssinger N. Optochemical Control of Therapeutic Agents through Photocatalyzed Isomerization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Emma E. Watson
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Francesco Russo
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Dimitri Moreau
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
| | - Nicolas Winssinger
- Department of Organic Chemistry NCCR Chemical Biology Faculty of Sciences University of Geneva 1211 Geneva Switzerland
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Lu Z, Jia W, Deng R, Zhou Y, Li X, Yu T, Zhen M, Wang C. Light-assisted gadofullerene nanoparticles disrupt tumor vasculatures for potent melanoma treatment. J Mater Chem B 2021; 8:2508-2518. [PMID: 32124888 DOI: 10.1039/c9tb02752a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The traditional photodynamic therapy (PDT) using a photosensitizer and oxygen under light generates reactive oxygen species (ROS) to kill tumor cells. However, its treatment efficiency is limited by insufficient oxygen in tumor cells. Herein, β-alanine modified gadofullerene nanoparticles (GFNPs) were explored to disrupt tumor vasculatures assisted by light for potent melanoma treatment. As tumor vasculatures are oxygen-rich, the yields of photo-induced singlet oxygen (1O2) by GFNPs are not subjected to the hypoxemia of tumor tissues. Different from the small molecule photosensitizer Chlorin e6 (Ce6), GFNPs realize high-efficiency tumor vascular disruption under light observed by using the mice tumor vascular dorsal skin fold chamber (DSFC) model. The tumor vascular disruption efficiency of GFNPs is size-dependent, and the smallest one (hydration diameter of ca. 126 nm) is more efficient. Mechanistically, the high yields of photo-induced 1O2 by GFNPs can lead to the destruction of the tumor vascular endothelial adherent junction protein-VE cadherin and the decrease of tumor vascular endothelial cells-CD31 proteins, inducing rapid tumor necrosis. In conclusion, our work provides an insight into the design of well-sized nanoparticles to powerfully treat melanoma assisted by light, as well as greatly extending the applications of PDT for robust tumor therapy.
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Affiliation(s)
- Zhigao Lu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wang Jia
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruijun Deng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Zhou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tong Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingming Zhen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunru Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
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The Role of Multiparametric Magnetic Resonance Imaging in the Study of Primary Tumor and Pelvic Lymph Node Metastasis in Stage IB1-IIA1 Cervical Cancer. J Comput Assist Tomogr 2020; 44:750-758. [PMID: 32842062 DOI: 10.1097/rct.0000000000001084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the value of multiparametric magnetic resonance imaging (MRI) in demonstrating the metastatic potential of primary tumor and differentiating metastatic lymph nodes (MLNs) from nonmetastatic lymph nodes (non-MLNs) in stage IB1-IIA1 cervical cancer. METHODS Fifty-seven stage IB1-IIA1 subjects were included. The apparent diffusion coefficient (ADC) values and dynamic contrast-enhanced MRI (DCE-MRI) parameters of primary tumors and lymph nodes and the conventional imaging features of the lymph nodes were measured and analyzed. Mann-Whitney test and χ test were used to analyze statistically significant parameters, logistic regression was used for multivariate analysis, and receiver operating characteristic analysis was used to compare the diagnostic performance of the MLNs. RESULTS Nineteen subjects had lymph node metastasis. A total of 94 lymph nodes were evaluated, including 30 MLNs and 64 non-MLNs. There were no significant difference in ADC and DCE-MRI parameters between metastatic and nonmetastatic primary tumors. The heterogeneous signal was more commonly seen in MLNs than in non-MLNs (P = 0.001). The values of ADCmean, ADCmin, and ADCmax of MLNs were lower than those of non-MLNs (P < 0.001). The values of short-axis diameter, K, Kep, and Ve of MLNs were higher than those of non-MLNs (P < 0.05). Compared with individual MRI parameters, the combined evaluation of short-axis diameter, ADCmean, and K showed the highest area under the curve of 0.930. CONCLUSIONS Diffusion-weighted imaging and DCE-MRI could not demonstrate the metastatic potential of primary tumor in stage IB1-IIA1 cervical cancer. Compared with individual MRI parameters, the combination of multiparametric MRI could improve the diagnostic performance of lymph node metastasis.
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Lorza AMA, Ravi H, Philip RC, Galons JP, Trouard TP, Parra NA, Von Hoff DD, Read WL, Tibes R, Korn RL, Raghunand N. Dose-response assessment by quantitative MRI in a phase 1 clinical study of the anti-cancer vascular disrupting agent crolibulin. Sci Rep 2020; 10:14449. [PMID: 32879326 PMCID: PMC7468301 DOI: 10.1038/s41598-020-71246-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/10/2020] [Indexed: 02/08/2023] Open
Abstract
The vascular disrupting agent crolibulin binds to the colchicine binding site and produces anti-vascular and apoptotic effects. In a multisite phase 1 clinical study of crolibulin (NCT00423410), we measured treatment-induced changes in tumor perfusion and water diffusivity (ADC) using dynamic contrast-enhanced MRI (DCE-MRI) and diffusion-weighted MRI (DW-MRI), and computed correlates of crolibulin pharmacokinetics. 11 subjects with advanced solid tumors were imaged by MRI at baseline and 2–3 days post-crolibulin (13–24 mg/m2). ADC maps were computed from DW-MRI. Pre-contrast T1 maps were computed, co-registered with the DCE-MRI series, and maps of area-under-the-gadolinium-concentration-curve-at-90 s (AUC90s) and the Extended Tofts Model parameters ktrans, ve, and vp were calculated. There was a strong correlation between higher plasma drug \documentclass[12pt]{minimal}
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\begin{document}$${AUC}_{90s}>15.8$$\end{document}AUC90s>15.8 mM s, and, (2) increase in tumor fraction with \documentclass[12pt]{minimal}
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\begin{document}$${v}_{e}<0.3$$\end{document}ve<0.3. A higher plasma drug AUC was correlated with a linear combination of (1) increase in tumor fraction with \documentclass[12pt]{minimal}
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\begin{document}$${\text{ADC}} < 1.1 \times 10^{ - 3} \;{\text{mm}}^{2} /{\text{s}}$$\end{document}ADC<1.1×10-3mm2/s, and, (2) increase in tumor fraction with \documentclass[12pt]{minimal}
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\begin{document}$$v_{e}<0.3$$\end{document}ve<0.3. These findings are suggestive of cell swelling and decreased tumor perfusion 2–3 days post-treatment with crolibulin. The multivariable linear regression models reported here can inform crolibulin dosing in future clinical studies of crolibulin combined with cytotoxic or immune-oncology agents.
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Affiliation(s)
- Andres M Arias Lorza
- Department of Cancer Physiology, Moffitt Cancer Center, SRB-4, Tampa, FL, 33612, USA
| | - Harshan Ravi
- Department of Cancer Physiology, Moffitt Cancer Center, SRB-4, Tampa, FL, 33612, USA
| | - Rohit C Philip
- Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, 85721, USA
| | | | - Theodore P Trouard
- Department of Biomedical Engineering, University of Arizona, Tucson, AZ, 85724, USA
| | - Nestor A Parra
- Department of Cancer Physiology, Moffitt Cancer Center, SRB-4, Tampa, FL, 33612, USA
| | - Daniel D Von Hoff
- Translational Genomics Research Institute (TGen), Phoenix, AZ, USA.,HonorHealth Clinical Research Institute, Scottsdale, AZ, USA
| | - William L Read
- Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Raoul Tibes
- Department of Internal Medicine II, Julius Maximilians University and Medical Center, Würzburg, Germany
| | | | - Natarajan Raghunand
- Department of Cancer Physiology, Moffitt Cancer Center, SRB-4, Tampa, FL, 33612, USA. .,Department of Oncologic Sciences, University of South Florida, Tampa, FL, USA.
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Izumi Y, Takagi S. Vascular disrupting effect of combretastatin A-4 phosphate with inhibition of vascular endothelial cadherin in canine osteosarcoma-xenografted mice. Res Vet Sci 2019; 122:1-6. [DOI: 10.1016/j.rvsc.2018.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 11/24/2022]
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8
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Yan S, Wang Z, Li L, Guo Y, Ji X, Ni H, Shen W, Xia S. Characterization of cervical lymph nodes using DCE-MRI: Differentiation between metastases from SCC of head and neck and benign lymph nodes. Clin Hemorheol Microcirc 2016; 64:213-222. [PMID: 27258201 DOI: 10.3233/ch-162065] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Shuo Yan
- Department of Radiology, Beijing Ditan Hospital, Capital Medical University, China
- Department of Radiology, Tianjin First Central Hospital, China
| | - Zhiye Wang
- Department of Radiology, Yuhuang Ding Hospital, China
| | - Li Li
- Department of Otolaryngology-Head and Neck Surgery, Tianjin First Central Hospital, China
| | - Yu Guo
- Department of Radiology, Tianjin First Central Hospital, China
| | - Xiaodong Ji
- Department of Radiology, Tianjin First Central Hospital, China
| | - Hongyan Ni
- Department of Radiology, Tianjin First Central Hospital, China
| | - Wen Shen
- Department of Radiology, Tianjin First Central Hospital, China
| | - Shuang Xia
- Department of Radiology, Tianjin First Central Hospital, China
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Colliez F, Fruytier AC, Magat J, Neveu MA, Cani PD, Gallez B, Jordan BF. Monitoring Combretastatin A4-induced tumor hypoxia and hemodynamic changes using endogenous MR contrast and DCE-MRI. Magn Reson Med 2015; 75:866-72. [PMID: 25765253 DOI: 10.1002/mrm.25642] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 12/15/2014] [Accepted: 01/07/2015] [Indexed: 01/01/2023]
Abstract
PURPOSE To benchmark MOBILE (Mapping of Oxygen By Imaging Lipid relaxation Enhancement), a recent noninvasive MR method of mapping changes in tumor hypoxia, electron paramagnetic resonance (EPR) oximetry, and dynamic contrast-enhanced MRI (DCE-MRI) as biomarkers of changes in tumor hemodynamics induced by the antivascular agent combretastatin A4 (CA4). METHODS NT2 and MDA-MB-231 mammary tumors were implanted subcutaneously in FVB/N and nude NMRI mice. Mice received 100 mg/kg of CA4 intraperitoneally 3 hr before imaging. The MOBILE sequence (assessing R1 of lipids) and the DCE sequence (assessing K(trans) hemodynamic parameter), were assessed on different cohorts. pO2 changes were confirmed on matching tumors using EPR oximetry consecutive to the MOBILE sequence. Changes in tumor vasculature were assessed using immunohistology consecutive to DCE-MRI studies. RESULTS Administration of CA4 induced a significant decrease in lipids R1 (P = 0.0273) on pooled tumor models and a reduction in tumor pO2 measured by EPR oximetry. DCE-MRI also exhibited a significant drop of K(trans) (P < 0.01) that was confirmed by immunohistology. CONCLUSION MOBILE was identified as a marker to follow a decrease in oxygenation induced by CA4. However, DCE-MRI showed a higher dynamic range to follow changes in tumor hemodynamics induced by CA4.
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Affiliation(s)
- Florence Colliez
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Anne-Catherine Fruytier
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Julie Magat
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Marie-Aline Neveu
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Patrice D Cani
- Université Catholique de Louvain, Louvain Drug Research Institute, Metabolism and Nutrition Research Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Bernard Gallez
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
| | - Bénédicte F Jordan
- Université Catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Group, Avenue Mounier 73, B1.73.08, Brussels, Belgium
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Evaluation of IAUGC indices and two DCE-MRI pharmacokinetic parameters assessed by two different theoretical algorithms in patients with brain tumors. Clin Imaging 2014; 38:808-14. [DOI: 10.1016/j.clinimag.2014.07.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 06/09/2014] [Accepted: 07/10/2014] [Indexed: 11/20/2022]
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Kim KW, Lee JM, Jeon YS, Lee IJ, Choi Y, Park J, Kiefer B, Kim C, Han JK, Choi BI. Vascular disrupting effect of CKD-516: preclinical study using DCE-MRI. Invest New Drugs 2013; 31:1097-106. [PMID: 23299389 DOI: 10.1007/s10637-012-9915-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 12/11/2012] [Indexed: 11/29/2022]
Abstract
Vascular disrupting agents (VDAs) are new class of anti-cancer drugs targeting pre-existing tumor vasculature which lead to tumor ischemia and necrosis. An innovative tubulin polymerization inhibitor, CKD-516, was recently developed as a VDA. We attempted to evaluate its tubulin destabilizing effect using immunofluorescence staining on human endothelial cells (HUVECs) and to ascertain its antivascular effect in a rabbit VX2 tumor model using dynamic contrast-enhanced (DCE) MRI by measuring the changes in kinetic parameters such as K-trans and IAUGC. Immunofluorescence staining using anti-tubulin and anti-actin antibodies on HUVECs showed that CKD-516 selectively disrupted tubulin component of the endothelial cytoskeleton. Serial DCE-MRI showed a significant decrease in K-trans and IAUGC parameters from baseline at 4 h (39.9 % in K-trans; -45.0 % in IAUGC) and at 24 h (-32.2 % in K-trans; -36.5 % in IAUGC), and a significant recovery at 48 h (22.9 % in K-trans; 34.8 % in IAUGC) following administration of CKD-516 at a 0.7-mg/kg dose. When the tumors were stratified according to the initial K-trans value of 0.1, tumors with a high K-trans > 0.1 which was indicative of having well-developed pre-existing vessels, showed greater reduction in K-trans and IAUGC values. On histologic examination, the degree of necrosis of treated tumors was significantly greater than that of untreated tumors. In summary, CKD-516 is an effective VDA which results in rapid vascular shutdown by targeting the tubulin component of tumor vessels and thus leads to necrosis.
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Spatial morphological and molecular differences within solid tumors may contribute to the failure of vascular disruptive agent treatments. BMC Cancer 2012; 12:522. [PMID: 23153292 PMCID: PMC3583184 DOI: 10.1186/1471-2407-12-522] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 11/07/2012] [Indexed: 01/25/2023] Open
Abstract
Background Treatment of solid tumors with vascular disrupting agent OXi4503 results in over 90% tumor destruction. However, a thin rim of viable cells persists in the tumor periphery following treatment, contributing to subsequent recurrence. This study investigates inherent differences in the microenvironment of the tumor periphery that contribute to treatment resistance. Methods Using a murine colorectal liver metastases model, spatial morphological and molecular differences within the periphery and the center of the tumor that may account for differences in resistance to OXi4503 treatment were investigated. H&E staining and immunostaining were used to examine vessel maturity and stability, hypoxia and HIF1α levels, accumulation of immune cells, expression of proangiogenic factors/receptors (VEGF, TGF-β, b-FGF, and AT1R) and expression of EMT markers (ZEB1, vimentin, E-cadherin and β-catenin) in the periphery and center of established tumors. The effects of OXi4503 on tumor vessels and cell kinetics were also investigated. Results Significant differences were found between tumor periphery and central regions, including association of the periphery with mature vessels, higher accumulation of immune cells, increased growth factor expression, minimal levels of hypoxia and increased evidence of EMT. OXi4503 treatment resulted in collapse of vessels in the tumor center; however vasculature in the periphery remained patent. Similarly, tumor apoptosis and proliferation were differentially modulated between centre and periphery after treatment. Conclusions The molecular and morphological differences between tumor periphery and center may account for the observed differential resistance to OXi4503 treatment and could provide targets for drug development to totally eliminate metastases.
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Meningioma progression in mice triggered by Nf2 and Cdkn2ab inactivation. Oncogene 2012; 32:4264-72. [DOI: 10.1038/onc.2012.436] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/06/2012] [Accepted: 08/07/2012] [Indexed: 11/08/2022]
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Fu XH, Li J, Zou Y, Hong YR, Fu ZX, Huang JJ, Zhang SZ, Zheng S. Endostar enhances the antineoplastic effects of combretastatin A4 phosphate in an osteosarcoma xenograft. Cancer Lett 2011; 312:109-16. [DOI: 10.1016/j.canlet.2011.08.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 08/07/2011] [Accepted: 08/08/2011] [Indexed: 01/22/2023]
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Tumor-Endothelial Cell Three-dimensional Spheroids: New Aspects to Enhance Radiation and Drug Therapeutics. Transl Oncol 2011; 4:365-76. [PMID: 22191001 DOI: 10.1593/tlo.11187] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 08/04/2011] [Accepted: 08/16/2011] [Indexed: 12/31/2022] Open
Abstract
Classic cancer research for several decades has focused on understanding the biology of tumor cells in vitro. However, extending these findings to in vivo settings has been impeded owing to limited insights on the impact of microenvironment on tumor cells. We hypothesized that tumor cell biology and treatment response would be more informative when done in the presence of stromal components, like endothelial cells, which exist in the tumor microenvironment. To that end, we have developed a system to grow three-dimensional cultures of GFP-4T1 mouse mammary tumor and 2H11 murine endothelial cells in hanging drops of medium in vitro. The presence of 2H11 endothelial cells in these three-dimensional cocultures was found to sensitize 4T1-GFP tumor cells to chemotherapy (Taxol) and, at the same time, protect cells from ionizing radiation. These spheroidal cultures can also be implanted into the dorsal skinfold window chamber of mice for fluorescence imaging of vascularization and disease progression/treatment response. We observed rapid neovascularization of the tumor-endothelial spheroids in comparison to tumor spheroids grown in nude mice. Molecular analysis revealed pronounced up-regulation of several proangiogenic factors in the tumor tissue derived from the tumor-endothelial spheroids compared with tumor-only spheroids. Furthermore, the rate of tumor growth from tumor-endothelial spheroids in mice was faster than the tumor cell-only spheroids, resulting in greater metastasis to the lung. This three-dimensional coculture model presents an improved way to investigate more pertinent aspects of the therapeutic potential for radiation and/or chemotherapy alone and in combination with antiangiogenic agents.
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Álvarez R, López V, Mateo C, Medarde M, Peláez R. New para-para Stilbenophanes: Synthesis by McMurry Coupling, Conformational Analysis and Inhibition of Tubulin Polymerisation. Chemistry 2011; 17:3406-19. [DOI: 10.1002/chem.201002869] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Indexed: 11/12/2022]
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Wang H, Marchal G, Ni Y. Multiparametric MRI biomarkers for measuring vascular disrupting effect on cancer. World J Radiol 2011; 3:1-16. [PMID: 21286490 PMCID: PMC3030722 DOI: 10.4329/wjr.v3.i1.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/13/2011] [Accepted: 01/20/2011] [Indexed: 02/06/2023] Open
Abstract
Solid malignancies have to develop their own blood supply for their aggressive growth and metastasis; a process known as tumor angiogenesis. Angiogenesis is largely involved in tumor survival, progression and spread, which are known to be significantly attributed to treatment failures. Over the past decades, efforts have been made to understand the difference between normal and tumor vessels. It has been demonstrated that tumor vasculature is structurally immature with chaotic and leaky phenotypes, which provides opportunities for developing novel anticancer strategies. Targeting tumor vasculature is not only a unique therapeutic intervention to starve neoplastic cells, but also enhances the efficacy of conventional cancer treatments. Vascular disrupting agents (VDAs) have been developed to disrupt the already existing neovasculature in actively growing tumors, cause catastrophic vascular shutdown within short time, and induce secondary tumor necrosis. VDAs are cytostatic; they can only inhibit tumor growth, but not eradicate the tumor. This novel drug mechanism has urged us to develop multiparametric imaging biomarkers to monitor early hemodynamic alterations, cellular dysfunctions and metabolic impairments before tumor dimensional changes can be detected. In this article, we review the characteristics of tumor vessels, tubulin-destabilizing mechanisms of VDAs, and in vivo effects of the VDAs that have been mostly studied in preclinical studies and clinical trials. We also compare the different tumor models adopted in the preclinical studies on VDAs. Multiparametric imaging biomarkers, mainly diffusion-weighted imaging and dynamic contrast-enhanced imaging from magnetic resonance imaging, are evaluated for their potential as morphological and functional imaging biomarkers for monitoring therapeutic effects of VDAs.
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Siemann DW. The unique characteristics of tumor vasculature and preclinical evidence for its selective disruption by Tumor-Vascular Disrupting Agents. Cancer Treat Rev 2010; 37:63-74. [PMID: 20570444 DOI: 10.1016/j.ctrv.2010.05.001] [Citation(s) in RCA: 418] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 04/28/2010] [Accepted: 05/02/2010] [Indexed: 02/06/2023]
Abstract
The vasculature of solid tumors is fundamentally different from that of normal vasculature and offers a unique target for anti-cancer therapy. Direct vascular-targeting with Tumor-Vascular Disrupting Agents (Tumor-VDAs) is distinctly different from anti-angiogenic strategies, and offers a complementary approach to standard therapies. Tumor-VDAs therefore have significant potential when combined with chemotherapy, radiotherapy, and angiogenesis-inhibiting agents. Preclinical studies with the different Tumor-VDA classes have demonstrated key tumor-selective anti-vascular and anti-tumor effects.
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Affiliation(s)
- Dietmar W Siemann
- Department of Radiation Oncology, University of Florida College of Medicine, Gainesville, FL, USA.
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Pettit GR, Minardi MD, Hogan F, Price PM. An efficient synthetic strategy for obtaining 4-methoxy carbon isotope labeled combretastatin A-4 phosphate and other Z-combretastatins. JOURNAL OF NATURAL PRODUCTS 2010; 73:399-403. [PMID: 20028026 PMCID: PMC2862752 DOI: 10.1021/np9004486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Human cancer and other clinical trials under development employing combretastatin A-4 phosphate (1b, CA4P) should benefit from the availability of a [(11)C]-labeled derivative for positron emission tomography (PET). In order to obtain a suitable precursor for addition of a [(11)C]methyl group at the penultimate step, several new synthetic pathways to CA4P were evaluated. Geometrical isomerization (Z to E) proved to be a challenge, but it was overcome by development of a new CA4P synthesis suitable for 4-methoxy isotope labeling.
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Affiliation(s)
- George R Pettit
- Cancer Research Institute and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
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Abstract
Microtubule-binding drugs (MBD) are widely used in cancer chemotherapy and also have clinically relevant antiangiogenic and vascular-disrupting properties. These antivascular actions are due in part to direct effects on endothelial cells, and all MBDs (both microtubule-stabilizing and microtubule-destabilizing) inhibit endothelial cell proliferation, migration, and tube formation in vitro, actions that are thought to correspond to therapeutic antiangiogenic actions. In addition, the microtubule-destabilizing agents cause prominent changes in endothelial cell morphology, an action associated with rapid vascular collapse in vivo. The effects on endothelial cells occur in vitro at low drug concentrations, which do not affect microtubule gross morphology, do not cause microtubule bundling or microtubule loss and do not induce cell cycle arrest, apoptosis, or cell death. Rather, it has been hypothesized that, at low concentrations, MBDs produce more subtle effects on microtubule dynamics, block critical cell signaling pathways, and prevent the microtubules from properly interacting with transient subcellular assemblies (focal adhesions and adherens junctions) whose subsequent stabilization and/or maturation are required for cell motility and cell-cell interactions. This review will focus on recent studies to define the molecular mechanisms for the antivascular actions of the MBDs, information that could be useful in the identification or design of agents whose actions more selectively target the tumor vasculature.
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Affiliation(s)
- Edward L Schwartz
- Department of Oncology, Albert Einstein College of Medicine, Bronx, New York 10467, USA.
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