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Yu Y, Jiang H, Liang Q, Qiu L, Huang T, Hu H, Bolshakov VY, Perlmutter JS, Tu Z. Radiosynthesis and Evaluation of a C-11 Radiotracer for Transient Receptor Potential Canonical 5 in the Brain. Mol Imaging Biol 2023; 25:334-342. [PMID: 35951211 PMCID: PMC9918595 DOI: 10.1007/s11307-022-01760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 10/15/2022]
Abstract
PURPOSE TRPC5 belongs to the mammalian superfamily of transient receptor potential (TRP) Ca2+-permeable cationic channels and it has been implicated in various CNS disorders. As part of our ongoing interest in the development of a PET radiotracer for imaging TRPC5, herein, we explored the radiosynthesis, and in vitro and in vivo evaluation of a new C-11 radiotracer [11C]HC070 in rodents and nonhuman primates. PROCEDURES [11C]HC070 was radiolabeled utilizing the corresponding precursor and [11C]CH3I via N-methylation protocol. Ex vivo biodistribution study of [11C]HC070 was performed in Sprague-Dawley rats. In vitro autoradiography study was conducted for the rat brain sections to characterize the radiotracer distribution in the brain regionals. MicroPET brain imaging studies of [11C]HC070 were done for 129S1/SvImJ wild-type mice and 129S1/SvImJ TRPC5 knockout mice for 0-60-min dynamic data acquisition after intravenous administration of the radiotracer. Dynamic PET scans (0-120 min) for the brain of cynomolgus male macaques were performed after the radiotracer injection. RESULTS [11C]HC070 was efficiently prepared with good radiochemical yield (45 ± 5%, n = 15), high chemical and radiochemical purity (> 99%), and high molar activity (320.6 ± 7.4 GBq/μmol, 8.6 ± 0.2 Ci/μmol) at the end of bombardment (EOB). Radiotracer [11C]HC070 has good solubility in the aqueous dose solution. The ex vivo biodistribution study showed that [11C]HC070 had a quick rat brain clearance. Autoradiography demonstrated that [11C]HC070 specifically binds to TRPC5-enriched regions in rat brain. MicroPET study showed the peak brain uptake (SUV value) was 0.63 in 129S1/SvImJ TRPC5 knockout mice compared to 1.13 in 129S1/SvImJ wild-type mice. PET study showed that [11C]HC070 has good brain uptake with maximum SUV of ~ 2.2 in the macaque brain, followed by rapid clearance. CONCLUSIONS Our data showed that [11C]HC070 is a TRPC5-specific radiotracer with high brain uptake and good brain washout pharmacokinetics in both rodents and nonhuman primates. The radiotracer is worth further investigating of its suitability to be a PET radiotracer for imaging TRPC5 in animals and human subjects in vivo.
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Affiliation(s)
- Yanbo Yu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hao Jiang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Qianwa Liang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Lin Qiu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Tianyu Huang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hongzhen Hu
- Center for the Study of Itch and Sensory Disorders, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Vadim Y Bolshakov
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Joel S Perlmutter
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Zhude Tu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA.
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Qiao MQ, Li Y, Yang YX, Pang CX, Liu YT, Bian C, Wang L, Chen XF, Hong B. Structure-activity relationship and biological evaluation of xanthine derivatives as PCSK9 inhibitors for the treatment of atherosclerosis. Eur J Med Chem 2023; 247:115047. [PMID: 36586297 DOI: 10.1016/j.ejmech.2022.115047] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/06/2022] [Accepted: 12/21/2022] [Indexed: 12/27/2022]
Abstract
Developing non-statin small molecules for the treatment of hypercholesterolemia remains challenging. The proprotein convertase subtilisin/kexin type 9 (PCSK9)-targeted therapies have attracted considerable attentions. Forty-five 7030B-C5 derivatives were synthesized and evaluated for the PCSK9 repression activity, taking the PCSK9 transcriptional inhibitor 7030B-C5 as the lead. Structure-activity relationship (SAR) analysis at C8 and N7-position was carried out, and compound 3s and 5r exhibited comparable PCSK9 transcriptional inhibitory activity but much lower cytotoxicity with the therapeutic index (TI) values doubled of that of 7030B-C5. In the in vitro assay, both compounds significantly reduced the level of PCSK9 protein and increased LDL receptor (LDLR) protein level. What's more, both compounds promoted LDL cholesterol (LDL-C) clearance more efficiently than 7030B-C5 in HepG2 cells. Most importantly, compound 3s reduced the atherosclerotic plaque areas with promising lipid-lowing effects in ApoE KO mice with a higher in vivo activity and lower toxicity. The regulatory mechanism of 3s was explored that it might target the transcription factor HNF1α and/or HINFP upstream of PCSK9 transcription, similar to that of 7030B-C5. Thus, 3s was considered as a potential anti-atherosclerosis drug candidate as a novel PCSK9 down-regulatory agent, worthy of further investigations.
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Affiliation(s)
- Meng-Qian Qiao
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Yue Li
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Yu-Xin Yang
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Chen-Xu Pang
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Yi-Ting Liu
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Cong Bian
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Li Wang
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.
| | - Xiao-Fang Chen
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.
| | - Bin Hong
- NHC Key Laboratory of Biotechnology of Antibiotics and CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.
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Yi X, Wang Z, Hu X, Yu A. Affinity probes based on small-molecule inhibitors for tumor imaging. Front Oncol 2022; 12:1028493. [PMID: 36387103 PMCID: PMC9647038 DOI: 10.3389/fonc.2022.1028493] [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: 08/26/2022] [Accepted: 10/17/2022] [Indexed: 11/29/2022] Open
Abstract
Methods for molecular imaging of target areas, including optical imaging, radionuclide imaging, magnetic resonance imaging and other imaging technologies, are helpful for the early diagnosis and precise treatment of cancers. In addition to cancer management, small-molecule inhibitors are also used for developing cancer target probes since they act as the tight-binding ligands of overexpressed proteins in cancer cells. This review aims to summarize the structural designs of affinity probes based on small-molecule inhibitors from the aspects of the inhibitor, linker, dye and radionuclide, and discusses the influence of the modification of these structures on affinity and pharmacokinetics. We also present examples of inhibitor affinity probes in clinical applications, and these summaries will provide insights for future research and clinical translations.
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Affiliation(s)
| | | | - Xiang Hu
- *Correspondence: Aixi Yu, ; Xiang Hu,
| | - Aixi Yu
- *Correspondence: Aixi Yu, ; Xiang Hu,
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Bon RS, Wright DJ, Beech DJ, Sukumar P. Pharmacology of TRPC Channels and Its Potential in Cardiovascular and Metabolic Medicine. Annu Rev Pharmacol Toxicol 2022; 62:427-446. [PMID: 34499525 DOI: 10.1146/annurev-pharmtox-030121-122314] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Transient receptor potential canonical (TRPC) proteins assemble to form homo- or heterotetrameric, nonselective cation channels permeable to K+, Na+, and Ca2+. TRPC channels are thought to act as complex integrators of physical and chemical environmental stimuli. Although the understanding of essential physiological roles of TRPC channels is incomplete, their implication in various pathological mechanisms and conditions of the nervous system, kidneys, and cardiovascular system in combination with the lack of major adverse effects of TRPC knockout or TRPC channel inhibition is driving the search of TRPC channel modulators as potential therapeutics. Here, we review the most promising small-molecule TRPC channel modulators, the understanding of their mode of action, and their potential in the study and treatment of cardiovascular and metabolic disease.
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Affiliation(s)
- Robin S Bon
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, United Kingdom;
| | - David J Wright
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, United Kingdom;
| | - David J Beech
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, United Kingdom;
| | - Piruthivi Sukumar
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, United Kingdom;
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Wright DJ, Simmons KJ, Johnson RM, Beech DJ, Muench SP, Bon RS. Human TRPC5 structures reveal interaction of a xanthine-based TRPC1/4/5 inhibitor with a conserved lipid binding site. Commun Biol 2020; 3:704. [PMID: 33230284 PMCID: PMC7683545 DOI: 10.1038/s42003-020-01437-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 10/23/2020] [Indexed: 02/08/2023] Open
Abstract
TRPC1/4/5 channels are non-specific cation channels implicated in a wide variety of diseases, and TRPC1/4/5 inhibitors have recently entered clinical trials. However, fundamental and translational studies require a better understanding of TRPC1/4/5 channel regulation by endogenous and exogenous factors. Although several potent and selective TRPC1/4/5 modulators have been reported, the paucity of mechanistic insights into their modes-of-action remains a barrier to the development of new chemical probes and drug candidates. Xanthine-based modulators include the most potent and selective TRPC1/4/5 inhibitors described to date, as well as TRPC5 activators. Our previous studies suggest that xanthines interact with a, so far, elusive pocket of TRPC1/4/5 channels that is essential to channel gating. Here we report the structure of a small-molecule-bound TRPC1/4/5 channel-human TRPC5 in complex with the xanthine Pico145-to 3.0 Å. We found that Pico145 binds to a conserved lipid binding site of TRPC5, where it displaces a bound phospholipid. Our findings explain the mode-of-action of xanthine-based TRPC1/4/5 modulators, and suggest a structural basis for TRPC1/4/5 modulation by endogenous factors such as (phospho)lipids and Zn2+ ions. These studies lay the foundations for the structure-based design of new generations of TRPC1/4/5 modulators.
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Affiliation(s)
- David J Wright
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Katie J Simmons
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Rachel M Johnson
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
- School of Biomedical Sciences, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - David J Beech
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Stephen P Muench
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
- School of Biomedical Sciences, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | - Robin S Bon
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK.
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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Yu Y, Liang Q, Du L, Jiang H, Gu J, Hu H, Tu Z. Synthesis and Characterization of a Specific Iodine-125-Labeled TRPC5 Radioligand. ChemMedChem 2020; 15:1854-1860. [PMID: 32717096 PMCID: PMC8544919 DOI: 10.1002/cmdc.202000339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Indexed: 11/11/2022]
Abstract
The nonselective Ca2+ -permeable transient receptor potential channel subfamily member 5 (TRPC5) belongs to the transient receptor potential canonical (TRPC) superfamily and is widely expressed in the brain. Compelling evidence reveals that TRPC5 plays crucial roles in depression and other psychiatric disorders. To develop a TRPC5 radioligand, following up on our previous effort, we synthesized the iodine compound TZ66127 and its iodine-125-labeled counterpart [125 I]TZ66127. The synthesis of TZ66127 was achieved by replacing chloride with iodide in the structure of HC608, and the [125 I]TZ66127 was radiosynthesized using its corresponding tributylstannylated precursor. We established a stable human TRPC5-overexpressed HEK293-hTRPC5 cell line and performed Ca2+ imaging and a cell-binding assay study of TZ66127; these indicated that TZ66127 had good inhibition activity for TRPC5, and the inhibitory efficiency of TZ66127 toward TRPC5 presented in a dose-dependent manner. An in vitro autoradiography and immunohistochemistry study of rat brain sections suggested that [125 I]TZ66127 had binding specificity toward TRPC5. Altogether, [125 I]TZ66127 has high potential to serve as a radioligand for screening the binding activity of other new compounds toward TRPC5. The availability of [125 I]TZ66127 might facilitate the development of therapeutic drugs and PET imaging agents that target TRPC5.
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Affiliation(s)
- Yanbo Yu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Qianwa Liang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lixia Du
- Department of Anesthesiology, Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hao Jiang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jiwei Gu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hongzhen Hu
- Department of Anesthesiology, Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Zhude Tu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
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Bauer CC, Minard A, Pickles IB, Simmons KJ, Chuntharpursat-Bon E, Burnham MP, Kapur N, Beech DJ, Muench SP, Wright MH, Warriner SL, Bon RS. Xanthine-based photoaffinity probes allow assessment of ligand engagement by TRPC5 channels. RSC Chem Biol 2020. [DOI: 10.1039/d0cb00126k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Diazirine-containing photoaffinity probes, based on the potent and selective TRPC1/4/5 channel inhibitor Pico145, allowed the development of an assay to probe cellular interactions between TRPC5 protein and xanthine-based TRPC5 channel modulators.
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Affiliation(s)
- Claudia C. Bauer
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Aisling Minard
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Isabelle B. Pickles
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Katie J. Simmons
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
| | | | | | - Nikil Kapur
- School of Mechanical Engineering
- University of Leeds
- Leeds LS2 9JT
- UK
| | - David J. Beech
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Stephen P. Muench
- School of Biomedical Sciences
- University of Leeds
- Leeds LS2 9JT
- UK
- Astbury Centre for Structural Molecular Biology
| | - Megan H. Wright
- School of Chemistry
- University of Leeds
- Woodhouse Lane
- Leeds LS2 9JT
- UK
| | | | - Robin S. Bon
- Leeds Institute of Cardiovascular and Metabolic Medicine
- LIGHT Laboratories
- University of Leeds
- Leeds LS2 9JT
- UK
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Sang W, Gavi AJ, Yu BY, Cheng H, Yuan Y, Wu Y, Lommens P, Chen C, Verpoort F. Palladium-Catalyzed Ligand-Free C-N Coupling Reactions: Selective Diheteroarylation of Amines with 2-Halobenzimidazoles. Chem Asian J 2019; 15:129-135. [PMID: 31762212 DOI: 10.1002/asia.201901465] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/15/2019] [Indexed: 12/14/2022]
Abstract
2-Aminobenzimidazoles are widely present in a number of bioactive molecules. Generally, the preparation of these molecules could be realized by the mono-substitution of 2-halobenzimidazoles with amines. However, rare examples were reported for the di-substituted products and the selectivity of mono- vs. di-substitution was relatively low. Considering the potential values of the di-substituted products, we accomplished the first selective diheteroarylation of amines with 2-halobenzimidazoles. Notably, this Pd-catalyzed transformation was realized under ligand-free conditions. Accordingly, numerous target products were efficiently produced from various aromatic or aliphatic amines and 2-halobenzimidazoles. It was worth noting that two representative products were further confirmed by X-ray crystallography. More significantly, this catalytic process could be applied to the synthesis and discovery of new bioactive compounds, which demonstrated the synthetic usefulness of this newly developed approach.
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Affiliation(s)
- Wei Sang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China.,School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Ayao Jean Gavi
- Odisee/KU Leuven Technology Campus, Gebroeders de Smetstraat 1, 9000, Ghent, Belgium
| | - Bao-Yi Yu
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture, Beijing University of Agriculture, Beinong Road 7, Beijing, 102206, P. R. China
| | - Hua Cheng
- Department of Chemical Engineering and Food Science, Hubei University of Arts and Science, 296 Longzhong Road, Xiangyang, 441053, P. R. China
| | - Ye Yuan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Yuan Wu
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, 430079, P. R. China
| | - Petra Lommens
- Odisee/KU Leuven Technology Campus, Gebroeders de Smetstraat 1, 9000, Ghent, Belgium
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China.,National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation.,Ghent University Global Campus, 119 Songdomunhwa-Ro, Yeonsu-Gu, Incheon, 21985, Korea
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