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Ureshino H, Kurahashi Y, Watanabe T, Yamashita S, Kamachi K, Yamamoto Y, Fukuda-Kurahashi Y, Yoshida-Sakai N, Hattori N, Hayashi Y, Kawaguchi A, Tohyama K, Okada S, Harada H, Ushijima T, Kimura S. Silylation of Deoxynucleotide Analog Yields an Orally Available Drug with Antileukemia Effects. Mol Cancer Ther 2021; 20:1412-1421. [PMID: 34045225 PMCID: PMC9398096 DOI: 10.1158/1535-7163.mct-20-1125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/15/2021] [Accepted: 05/25/2021] [Indexed: 01/07/2023]
Abstract
DNA methyltransferase inhibitors have improved the prognosis of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). However, because these agents are easily degraded by cytidine deaminase (CDA), they must be administered intravenously or subcutaneously. Recently, two orally bioavailable DNA methyltransferase inhibitors, CC-486 and ASTX727, were approved. In previous work, we developed 5-O-trialkylsilylated decitabines that resist degradation by CDA. However, the effects of silylation of a deoxynucleotide analog and enzymatic cleavage of silylation have not been fully elucidated. Enteric administration of OR21 in a cynomolgus monkey model led to high plasma concentrations and hypomethylation, and in a mouse model, oral administration of enteric-coated OR21 led to high plasma concentrations. The drug became biologically active after release of decitabine (DAC) from OR21 following removal of the 5'-O-trisilylate substituent. Toxicities were tolerable and lower than those of DAC. Transcriptome and methylome analysis of MDS and AML cell lines revealed that OR21 increased expression of genes associated with tumor suppression, cell differentiation, and immune system processes by altering regional promoter methylation, indicating that these pathways play pivotal roles in the action of hypomethylating agents. OR21 induced cell differentiation via upregulation of the late cell differentiation drivers CEBPE and GATA-1 Thus, silylation of a deoxynucleotide analog can confer oral bioavailability without new toxicities. Both in vivo and in vitro, OR21 exerted antileukemia effects, and had a better safety profile than DAC. Together, our findings indicate that OR21 is a promising candidate drug for phase I study as an alternative to azacitidine or decitabine.
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Affiliation(s)
- Hiroshi Ureshino
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan.,Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Yuki Kurahashi
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Tatsuro Watanabe
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Satoshi Yamashita
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazuharu Kamachi
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan.,Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Yuta Yamamoto
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Yuki Fukuda-Kurahashi
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Nao Yoshida-Sakai
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan.,Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Naoko Hattori
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Yoshihiro Hayashi
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Atsushi Kawaguchi
- Center for Comprehensive Community Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Kaoru Tohyama
- Department of Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Seiji Okada
- Division of Hematopoiesis, Joint Research Center for Human Retrovirus Infection, Kumamoto, Japan
| | - Hironori Harada
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Toshikazu Ushijima
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Shinya Kimura
- Department of Drug Discovery and Biomedical Sciences, Faculty of Medicine, Saga University, Saga, Japan.,Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan.,Corresponding Author: Shinya Kimura, Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Saga University School of Medicine, 5-1-1 Nabeshima, Saga 849-8501, Japan. Phone: 81-952-34-2366; Fax: 81-952-34-2017; E-mail:
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Chistè E, Ischia G, Gerosa M, Marzola P, Scarpa M, Daldosso N. Porous Si Microparticles Infiltrated with Magnetic Nanospheres. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:nano10030463. [PMID: 32143523 PMCID: PMC7153621 DOI: 10.3390/nano10030463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 02/29/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Porous silicon (pSi) microparticles obtained by porosification of crystalline silicon wafers have unique optical properties that, together with biodegradability, biocompatibility and absence of immunogenicity, are fundamental characteristics to candidate them as tracers in optical imaging techniques and as drug carriers. In this work, we focus on the possibility to track down the pSi microparticles also by MRI (magnetic resonance imaging), thus realizing a comprehensive tool for theranostic applications, i.e., the combination of therapy and diagnostics. We have developed and tested an easy, quick and low-cost protocol to infiltrate the COOH-functionalized pSi microparticles pores (tens of nanometers about) with magnetic nanospheres (SPIONs-Super Paramagnetic Iron Oxide Nanoparticles, about 5-7 nm) and allow an electrostatic interaction. The structural properties and the elemental composition were investigated by electron microscopy techniques coupled to elemental analysis to demonstrate the effective attachment of the SPIONs along the pores' surface of the pSi microparticles. The magnetic properties were investigated under an external magnetic field to determine the relaxivity properties of the material and resulting in an alteration of the relaxivity of water due to the SPIONs presence, clearly demonstrating the effectiveness of the easy functionalization protocol proposed.
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Affiliation(s)
- Elena Chistè
- Department of Computer Science, Fluorescence Laboratory, University of Verona, 37134 Verona, Italy;
| | - Gloria Ischia
- Department of Industrial Engineering, University of Trento, 38123 Trento, Italy;
| | - Marco Gerosa
- Department of Morphological-Biomedical Sciences, Section of Anatomy and Histology, University of Verona, 37134 Verona, Italy; (M.G.); (P.M.)
| | - Pasquina Marzola
- Department of Morphological-Biomedical Sciences, Section of Anatomy and Histology, University of Verona, 37134 Verona, Italy; (M.G.); (P.M.)
| | - Marina Scarpa
- Department of Physics, Laboratory of Nanoscience, University of Trento, 38123 Trento, Italy;
| | - Nicola Daldosso
- Department of Computer Science, Fluorescence Laboratory, University of Verona, 37134 Verona, Italy;
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Li P, Wang J, Li X, Zhu W, He S, Han C, Luo Y, Ma W, Liu N, Dionysiou DD. Facile synthesis of amino-functional large-size mesoporous silica sphere and its application for Pb 2+ removal. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120664. [PMID: 31203120 DOI: 10.1016/j.jhazmat.2019.05.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
Amino-functional large-size mesoporous silica spheres (LMS-AP) were successfully synthesized through a one-step method with (3-aminopropyl) triethoxysilane (APTES) addition during the pseudomorphic transformation process. LMS-AP were characterized using thermogravimetry-differential thermal analysis, Nitrogen adsorption-desorption measurement, infrared spectroscopy, and X-ray photoelectron spectroscopy. The study found that -NH2 was grafted into LMS, and the LMS-AP had a better thermal stability than other samples. The Pb2+ removal properties of LMS-AP were investigated using the static and dynamic experiments in simulated and real wastewater solutions. The kinetic and equilibrium experiments indicated that the adsorption process of LMS-AP fitted the Langmuir adsorption model and the pseudo-second-order kinetics model (R2 > 0.98), respectively. The maximum Qe (mg/g) was about 100 mg/g in the static adsorption condition. The adsorption mechanism of removal of Pb2+ was also investigated. In fix bed column experiments, LMS-AP exhibited excellent Pb2+ adsorption ability for simulated wastewater, with the maximum qe (mg/g) of 48.7 mg/g for particle size under 1-3 mm. Meanwhile in actual industrial wastewater treatment process, LMS-AP had a better Pb2+, Zn2+ and Cr (VI) removal efficiency of 80% and As (V) of 30-40% removal efficiency at initial pH 4, suggesting selective adsorption property for different heavy metal ions.
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Affiliation(s)
- Penggang Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Jingxuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Xitong Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Wenjie Zhu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China.
| | - Sufang He
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, PR China
| | - Caiyun Han
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Wenhui Ma
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China
| | - Nengsheng Liu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH, 45221-0012, USA.
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