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Ali Al Saidi AK, Ghazanfari A, Baek A, Tegafaw T, Ahmad MY, Zhao D, Liu Y, Yang JU, Park JA, Yang BW, Chae KS, Nam SW, Chang Y, Lee GH. Ultrasmall cerium oxide nanoparticles as highly sensitive X-ray contrast agents and their antioxidant effect. RSC Adv 2024; 14:3647-3658. [PMID: 38268539 PMCID: PMC10805080 DOI: 10.1039/d3ra08372a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/15/2024] [Indexed: 01/26/2024] Open
Abstract
Owing to their theranostic properties, cerium oxide (CeO2) nanoparticles have attracted considerable attention for their key applications in nanomedicine. In this study, ultrasmall CeO2 nanoparticles (particle diameter = 1-3 nm) as X-ray contrast agents with an antioxidant effect were investigated for the first time. The nanoparticles were coated with hydrophilic and biocompatible poly(acrylic acid) (PAA) and poly(acrylic acid-co-maleic acid) (PAAMA) to ensure satisfactory colloidal stability in aqueous media and low cellular toxicity. The synthesized nanoparticles were characterized using high-resolution transmission electron microscopy, X-ray diffraction, Fourier transform-infrared spectroscopy, thermogravimetric analysis, dynamic light scattering, cell viability assay, photoluminescence spectroscopy, and X-ray computed tomography (CT). Their potential as X-ray contrast agents was demonstrated by measuring phantom images and in vivo CT images in mice injected intravenously and intraperitoneally. The X-ray attenuation of these nanoparticles was greater than that of the commercial X-ray contrast agent Ultravist and those of larger CeO2 nanoparticles reported previously. In addition, they exhibited an antioxidant effect for the removal of hydrogen peroxide. The results confirmed that the PAA- and PAAMA-coated ultrasmall CeO2 nanoparticles demonstrate potential as highly sensitive radioprotective or theranostic X-ray contrast agents.
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Affiliation(s)
| | - Adibehalsadat Ghazanfari
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
| | - Ahrum Baek
- Institute of Biomedical Engineering, School of Medicine, Kyungpook National University Taegu 41944 South Korea
| | - Tirusew Tegafaw
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
| | - Mohammad Yaseen Ahmad
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
| | - Dejun Zhao
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
| | - Ying Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
| | - Ji-Ung Yang
- Division of Applied RI, Korea Institute of Radiological & Medical Sciences Seoul 01812 South Korea
| | - Ji Ae Park
- Division of Applied RI, Korea Institute of Radiological & Medical Sciences Seoul 01812 South Korea
| | - Byeong Woo Yang
- Theranocure Medlifescience Bldg. 1, Chilgok, Bukgu Taegu 41405 South Korea
| | - Kwon Seok Chae
- Department of Biology Education, Teachers' College, Kyungpook National University Taegu 41566 South Korea
| | - Sung-Wook Nam
- Department of Molecular Medicine, School of Medicine, Kyungpook National University Taegu 41944 South Korea
| | - Yongmin Chang
- Department of Molecular Medicine, School of Medicine, Kyungpook National University Taegu 41944 South Korea
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences, Kyungpook National University Taegu 41566 South Korea
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Yue H, Zhao D, Tegafaw T, Ahmad MY, Saidi AKAA, Liu Y, Cha H, Yang BW, Chae KS, Nam SW, Chang Y, Lee GH. Core-Shell Fe 3O 4@C Nanoparticles as Highly Effective T 2 Magnetic Resonance Imaging Contrast Agents: In Vitro and In Vivo Studies. Nanomaterials (Basel) 2024; 14:177. [PMID: 38251140 PMCID: PMC10819740 DOI: 10.3390/nano14020177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/23/2024]
Abstract
Magnetite nanoparticles (Fe3O4 NPs) have been intensively investigated because of their potential biomedical applications due to their high saturation magnetization. In this study, core-shell Fe3O4@C NPs (core = Fe3O4 NPs and shell = amorphous carbons, davg = 35.1 nm) were synthesized in an aqueous solution. Carbon coating terminated with hydrophilic -OH and -COOH groups imparted excellent biocompatibility and hydrophilicity to the NPs, making them suitable for biomedical applications. The Fe3O4@C NPs exhibited ideal relaxometric properties for T2 magnetic resonance imaging (MRI) contrast agents (i.e., high transverse and negligible longitudinal water proton spin relaxivities), making them exclusively induce only T2 relaxation. Their T2 MRI performance as contrast agents was confirmed in vivo by measuring T2 MR images in mice before and after intravenous injection.
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Affiliation(s)
- Huan Yue
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Dejun Zhao
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Tirusew Tegafaw
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Mohammad Yaseen Ahmad
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Abdullah Khamis Ali Al Saidi
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Ying Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
| | - Hyunsil Cha
- Division of Biomedical Science, School of Medicine, Kyungpook National University, Taegu 41944, Republic of Korea;
| | - Byeong Woo Yang
- Theranocure, Medlifescience Bldg. 1, Chilgok, Bukgu, Taegu 41405, Republic of Korea;
| | - Kwon Seok Chae
- Department of Biology Education, Teachers’ College, Kyungpook National University, Taegu 41566, Republic of Korea;
| | - Sung-Wook Nam
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Republic of Korea;
| | - Yongmin Chang
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Republic of Korea;
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Republic of Korea; (H.Y.); (D.Z.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (Y.L.)
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Liu S, Yue H, Ho SL, Kim S, Park JA, Tegafaw T, Ahmad MY, Kim S, Saidi AKAA, Zhao D, Liu Y, Nam SW, Chae KS, Chang Y, Lee GH. Enhanced Tumor Imaging Using Glucosamine-Conjugated Polyacrylic Acid-Coated Ultrasmall Gadolinium Oxide Nanoparticles in Magnetic Resonance Imaging. Int J Mol Sci 2022; 23:ijms23031792. [PMID: 35163714 PMCID: PMC8836488 DOI: 10.3390/ijms23031792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 12/12/2022] Open
Abstract
Owing to a higher demand for glucosamine (GlcN) in metabolic processes in tumor cells than in normal cells (i.e., GlcN effects), tumor imaging in magnetic resonance imaging (MRI) can be highly improved using GlcN-conjugated MRI contrast agents. Here, GlcN was conjugated with polyacrylic acid (PAA)-coated ultrasmall gadolinium oxide nanoparticles (UGONs) (davg = 1.76 nm). Higher positive (brighter or T1) contrast enhancements at various organs including tumor site were observed in human brain glioma (U87MG) tumor-bearing mice after the intravenous injection of GlcN-PAA-UGONs into their tail veins, compared with those obtained with PAA-UGONs as control, which were rapidly excreted through the bladder. Importantly, the contrast enhancements of the GlcN-PAA-UGONs with respect to those of the PAA-UGONs were the highest in the tumor site owing to GlcN effects. These results demonstrated that GlcN-PAA-UGONs can serve as excellent T1 MRI contrast agents in tumor imaging via GlcN effects.
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Affiliation(s)
- Shuwen Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Huan Yue
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Son Long Ho
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Soyeon Kim
- Division of RI-Convergence Research, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul 01817, Korea; (S.K.); (J.A.P.)
| | - Ji Ae Park
- Division of RI-Convergence Research, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul 01817, Korea; (S.K.); (J.A.P.)
| | - Tirusew Tegafaw
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Mohammad Yaseen Ahmad
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Seungho Kim
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Korea; (S.K.); (S.-W.N.)
| | - Abdullah Khamis Ali Al Saidi
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Dejun Zhao
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Ying Liu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
| | - Sung-Wook Nam
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Korea; (S.K.); (S.-W.N.)
| | - Kwon Seok Chae
- Department of Biology Education, Teachers’ College, Kyungpook National University, Taegu 41566, Korea;
| | - Yongmin Chang
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Taegu 41944, Korea; (S.K.); (S.-W.N.)
- Correspondence: (Y.C.); (G.H.L.)
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 41566, Korea; (S.L.); (H.Y.); (S.L.H.); (T.T.); (M.Y.A.); (A.K.A.A.S.); (D.Z.); (Y.L.)
- Correspondence: (Y.C.); (G.H.L.)
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Yue H, Park JA, Ho SL, Ahmad MY, Cha H, Liu S, Tegafaw T, Marasini S, Ghazanfari A, Kim S, Chae KS, Chang Y, Lee GH. New Class of Efficient T 2 Magnetic Resonance Imaging Contrast Agent: Carbon-Coated Paramagnetic Dysprosium Oxide Nanoparticles. Pharmaceuticals (Basel) 2020; 13:ph13100312. [PMID: 33076332 PMCID: PMC7602642 DOI: 10.3390/ph13100312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 11/16/2022] Open
Abstract
Nanoparticles are considered potential candidates for a new class of magnetic resonance imaging (MRI) contrast agents. Negative MRI contrast agents require high magnetic moments. However, if nanoparticles can exclusively induce transverse water proton spin relaxation with negligible induction of longitudinal water proton spin relaxation, they may provide negative contrast MR images despite having low magnetic moments, thus acting as an efficient T2 MRI contrast agent. In this study, carbon-coated paramagnetic dysprosium oxide (DYO@C) nanoparticles (core = DYO = DyxOy; shell = carbon) were synthesized to explore their potential as an efficient T2 MRI contrast agent at 3.0 T MR field. Since the core DYO nanoparticles have an appreciable (but not high) magnetic moment that arises from fast 4f-electrons of Dy(III) (6H15/2), the DYO@C nanoparticles exhibited an appreciable transverse water proton spin relaxivity (r2) with a negligible longitudinal water proton spin relaxivity (r1). Consequently, they acted as a very efficient T2 MRI contrast agent, as proven from negative contrast enhancements seen in the in vivo T2 MR images.
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Affiliation(s)
- Huan Yue
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Ji Ae Park
- Division of RI-Convergence Research, Korea Institute of Radiological & Medical Sciences (KIRAMS), Seoul 01817, Korea;
| | - Son Long Ho
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Mohammad Yaseen Ahmad
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Hyunsil Cha
- Department of Molecular Medicine and Medical & Biological Engineering, DNN, School of Medicine, KNU and Hospital, Taegu 41566, Korea; (H.C.); (S.K.)
| | - Shuwen Liu
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Tirusew Tegafaw
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Shanti Marasini
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Adibehalsadat Ghazanfari
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
| | - Soyeon Kim
- Department of Molecular Medicine and Medical & Biological Engineering, DNN, School of Medicine, KNU and Hospital, Taegu 41566, Korea; (H.C.); (S.K.)
| | - Kwon Seok Chae
- Department of Biology Education, DNN, Teachers’ College, KNU, Taegu 41566, Korea;
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering, DNN, School of Medicine, KNU and Hospital, Taegu 41566, Korea; (H.C.); (S.K.)
- Correspondence: (Y.C.); (G.H.L.)
| | - Gang Ho Lee
- Department of Chemistry, Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, Korea; (H.Y.); (S.L.H.); (M.Y.A.); (S.L.); (T.T.); (S.M.); (A.G.)
- Correspondence: (Y.C.); (G.H.L.)
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Ghazanfari A, Marasini S, Yue H, Ho SL, Miao X, Ahmad MY, Park JA, Jung KH, Liu S, Jang YJ, Chae KS, Chang Y, Lee GH. D-Glucuronic Acid-Coated Ultrasmall Bi₂O₃ Nanoparticles for CT Imaging. J Nanosci Nanotechnol 2020; 20:4638-4642. [PMID: 32126632 DOI: 10.1166/jnn.2020.17817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ultrasmall Bi₂O₃ nanoparticles (davg = 1.5 nm) coated with biocompatible and hydrophilic D-glucuronic acid were prepared for the first time through a simple one-step polyol process and their potential as CT contrast agents were investigated by measuring their X-ray attenuation properties. Their observed X-ray attenuation power was stronger than that of a commercial iodine CT contrast agent at the same atomic concentration, as consistent with the magnitudes of atomic X-ray attenuation coefficients (i.e., Bi > I), and much stronger at the same number density. The results indicate that the nanoparticle sample is a potential CT contrast agent.
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Affiliation(s)
- Adibehalsadat Ghazanfari
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Shanti Marasini
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Huan Yue
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Son Long Ho
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Xu Miao
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Mohammad Yaseen Ahmad
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Ji Ae Park
- Division of RI-Convergence Research, Korea Institute of Radiological & Medical Science (KIRAMS), Seoul 01817, South Korea
| | - Ki-Hye Jung
- Division of RI-Convergence Research, Korea Institute of Radiological & Medical Science (KIRAMS), Seoul 01817, South Korea
| | - Shuwen Liu
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Yeong Ji Jang
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
| | - Kwon Seok Chae
- Department of Biology Education and DNN, Teachers' College, KNU, Taegu 41566, South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering and DNN, School of Medicine, KNU and Hospital, Taegu 41566, South Korea
| | - Gang Ho Lee
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University (KNU), Taegu 41566, South Korea
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Yue H, Marasini S, Ahmad MY, Ho SL, Cha H, Liu S, Jang YJ, Tegafaw T, Ghazanfari A, Miao X, Chae KS, Chang Y, Lee GH. Carbon-coated ultrasmall gadolinium oxide (Gd2O3@C) nanoparticles: Application to magnetic resonance imaging and fluorescence properties. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124261] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Marasini S, Tegafaw T, Miao X, Ho SL, Cha H, Chang Y, Oh IT, Chae KS, Yaseen AM, Ghazanfari A, Huan Y, Lee GH. Relaxometric, Optical and Cell Viability Properties of D-Glucuronic Acid Coated Cr₂O₃ Nanoparticles. J Nanosci Nanotechnol 2018; 18:6333-6338. [PMID: 29677792 DOI: 10.1166/jnn.2018.15659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
D-glucuronic acid-coated ultrasmall chromium oxide (Cr2O3) nanoparticles were synthesized by a one-pot polyol method and their relaxometric and optical properties were investigated. The as-synthesized D-glucuronic acid-coated nanoparticles were amorphous owing to ultrasmall particle diameters (davg = 2.0 nm), whereas orthorhombic Cr2O3 nanoparticles with two size groups (davg = 3.6 and 5.7 nm) were observed after thermogravimetric analysis (900 °C) as a result of particle growth. The nanoparticles exhibited size-dependent UV-visible absorption maxima at 238, 274, and 372 nm with increasing particle diameter, corresponding to band gaps of 5.13, 4.45, and 3.28 eV, respectively. D-glucuronic acid-coated ultrasmall Cr2O3 nanoparticles revealed low water proton relaxivities of r1 = 0.05 s-1mM-1 and r2 = 0.20 s-1mM-1, consistent with the antiferromagnetic property of Cr2O3. They showed good biocompatibility up to 500 μM of Cr.
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Affiliation(s)
- Shanti Marasini
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Tirusew Tegafaw
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Xu Miao
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Son Long Ho
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Hyunsil Cha
- Department of Molecular Medicine and Medical and Biological Engineering and DNN, School of Medicine, Kyungpook National University and Hospital, Daegu 41566, South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical and Biological Engineering and DNN, School of Medicine, Kyungpook National University and Hospital, Daegu 41566, South Korea
| | - In Taek Oh
- Department of Biology Education and DNN, Teachers' College, Kyungpook National University, Daegu 41566, South Korea
| | - Kwon Seok Chae
- Department of Biology Education and DNN, Teachers' College, Kyungpook National University, Daegu 41566, South Korea
| | - Ahmad Mohammad Yaseen
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Adibehalsadat Ghazanfari
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Yue Huan
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Gang Ho Lee
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences, Kyungpook National University, Daegu 41566, South Korea
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Ahmad MY, Ahmad MW, Cha H, Oh IT, Tegafaw T, Miao X, Ho SL, Marasini S, Ghazanfari A, Yue H, Ryeom HK, Lee J, Chae KS, Chang Y, Lee GH. Cyclic RGD-Coated Ultrasmall Gd2O3Nanoparticles as Tumor-Targeting Positive Magnetic Resonance Imaging Contrast Agents. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mohammad Yaseen Ahmad
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Mohammad Wasi Ahmad
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Hyunsil Cha
- Department of Molecular Medicine and Medical and Biological Engineering and DNN; School of Medicine and Hospital; KNU; 41566 Taegu South Korea
| | - In-Taek Oh
- Department of Biology Education and DNN; Teachers' College; KNU; 41566 Taegu South Korea
| | - Tirusew Tegafaw
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Xu Miao
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Son Long Ho
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Shanti Marasini
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Adibehalsadat Ghazanfari
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Huan Yue
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
| | - Hun-Kyu Ryeom
- Department of Radiology; School of Medicine and Hospital; KNU; 41566 Taegu South Korea
| | - Jongmin Lee
- Department of Radiology; School of Medicine and Hospital; KNU; 41566 Taegu South Korea
| | - Kwon Seok Chae
- Department of Biology Education and DNN; Teachers' College; KNU; 41566 Taegu South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical and Biological Engineering and DNN; School of Medicine and Hospital; KNU; 41566 Taegu South Korea
| | - Gang Ho Lee
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN); College of Natural Sciences; Kyungpook National University (KNU); 41566 Taegu South Korea
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9
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Ahmad MY, Cha H, Oh IT, Tegafaw T, Miao X, Ho SL, Marasini S, Ghazanfari A, Yue H, Chae KS, Chang Y, Lee GH. Synthesis, Characterization, and Enhanced Cancer-Imaging Application of Trans-activator of Transcription Peptide-conjugated Ultrasmall Gadolinium Oxide Nanoparticles. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11404] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mohammad Yaseen Ahmad
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Hyunsil Cha
- Department of Molecular Medicine and Medical & Biological Engineering and DNN; School of Medicine and Hospital, KNU, Taegu; Taegu 41566 South Korea
| | - In-Taek Oh
- Department of Biology Education and DNN; Teachers’ College, KNU, Taegu; Taegu 41566 South Korea
| | - Tirusew Tegafaw
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Xu Miao
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Son Long Ho
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Shanti Marasini
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Adibehalsadat Ghazanfari
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Huan Yue
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
| | - Kwon Seok Chae
- Department of Biology Education and DNN; Teachers’ College, KNU, Taegu; Taegu 41566 South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering and DNN; School of Medicine and Hospital, KNU, Taegu; Taegu 41566 South Korea
| | - Gang Ho Lee
- Department of Chemistry and Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU), Taegu; Taegu 41566 South Korea
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10
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Miao X, Ho SL, Tegafaw T, Cha H, Chang Y, Oh IT, Yaseen AM, Marasini S, Ghazanfari A, Yue H, Chae KS, Lee GH. Stable and non-toxic ultrasmall gadolinium oxide nanoparticle colloids (coating material = polyacrylic acid) as high-performance T1 magnetic resonance imaging contrast agents. RSC Adv 2018; 8:3189-3197. [PMID: 35541201 PMCID: PMC9077528 DOI: 10.1039/c7ra11830a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 01/04/2018] [Indexed: 11/21/2022] Open
Abstract
For use as positive (T1) magnetic resonance imaging contrast agents (MRI-CAs), gadolinium oxide (Gd2O3) nanoparticle colloids (i.e. nanoparticles coated with hydrophilic ligands) should be stable, non-toxic, and ultrasmall in particle diameter for renal excretion. In addition, they should have a high longitudinal water proton relaxivity (r1) and r2/r1 ratio that is close to one (r2 = transverse water proton relaxivity) for high-performance. In this study, we report ultrasmall Gd2O3 nanoparticle colloids [coating material = polyacrylic acid, Mw = ∼5100 Da] satisfying these conditions. The particle diameter was monodisperse with an average value of 2.0 ± 0.1 nm. The colloidal suspension exhibited a high r1 value of 31.0 ± 0.1 s−1 mM−1 and r2/r1 ratio of 1.2, where r1 was ∼8 times higher than that of commercial Gd-chelates: the cooperative induction model was proposed to explain this. The effectiveness of the colloidal suspension as a high-performance T1 MRI-CA was confirmed by taking in vivo T1 MR images in a mouse after intravenous administration. Highly positive contrast enhancements were observed in various organs of the mouse such as the liver, kidneys, and bladder. The colloidal suspension was then excreted through the bladder. Stable and non-toxic ultrasmall Gd2O3 nanoparticle colloids as high-performance T1 MRI-CA were developed.![]()
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11
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Ho SL, Cha H, Oh IT, Jung KH, Kim MH, Lee YJ, Miao X, Tegafaw T, Ahmad MY, Chae KS, Chang Y, Lee GH. Magnetic resonance imaging, gadolinium neutron capture therapy, and tumor cell detection using ultrasmall Gd2O3 nanoparticles coated with polyacrylic acid-rhodamine B as a multifunctional tumor theragnostic agent. RSC Adv 2018; 8:12653-12665. [PMID: 35541232 PMCID: PMC9079332 DOI: 10.1039/c8ra00553b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/28/2018] [Indexed: 01/10/2023] Open
Abstract
Monodisperse and ultrasmall gadolinium oxide (Gd2O3) nanoparticle colloids (davg = 1.5 nm) (nanoparticle colloid = nanoparticle coated with hydrophilic ligand) were synthesized and their performance as a multifunctional tumor theragnostic agent was investigated. The aqueous ultrasmall nanoparticle colloidal suspension was stable and non-toxic owing to hydrophilic polyacrylic acid (PAA) coating that was partly conjugated with rhodamine B (Rho) for an additional functionalization (mole ratio of PAA : Rho = 5 : 1). First, the ultrasmall nanoparticle colloids performed well as a powerful T1 magnetic resonance imaging (MRI) contrast agent: they exhibited a very high longitudinal water proton relaxivity (r1) of 22.6 s−1 mM−1 (r2/r1 = 1.3, r2 = transverse water proton relaxivity), which was ∼6 times higher than those of commercial Gd-chelates, and high positive contrast enhancements in T1 MR images in a nude mouse after intravenous administration. Second, the ultrasmall nanoparticle colloids were applied to gadolinium neutron capture therapy (GdNCT) in vitro and exhibited a significant U87MG tumor cell death (28.1% net value) after thermal neutron beam irradiation, which was 1.75 times higher than that obtained using commercial Gadovist. Third, the ultrasmall nanoparticle colloids exhibited stronger fluorescent intensities in tumor cells than in normal cells owing to conjugated Rho, proving their pH-sensitive fluorescent tumor cell detection ability. All these results together demonstrate that ultrasmall Gd2O3 nanoparticle colloids are the potential multifunctional tumor theragnostic agent. Ultrasmall Gd2O3 nanoparticle colloids coated with PAA and Rho-PAA were synthesized and applied to T1 MRI, GdNCT and fluorescent tumor cell detection.![]()
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12
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Miao X, Xu W, Cha H, Chang Y, Oh IT, Chae KS, Lee GH. Application of Dye-coated Ultrasmall Gadolinium Oxide Nanoparticles for Biomedical Dual Imaging. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xu Miao
- Department of Chemistry, College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
- Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
| | - Wenlong Xu
- Department of Chemistry, College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
- Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
| | - Hyunsil Cha
- Department of Molecular Medicine and Medical & Biological Engineering and DNN; School of Medicine and Hospital; Taegu 702-701 South Korea
| | - Yongmin Chang
- Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
- Department of Molecular Medicine and Medical & Biological Engineering and DNN; School of Medicine and Hospital; Taegu 702-701 South Korea
| | - In Taek Oh
- Department of Biology Education and DNN; Teacher's College; Taegu 41566 South Korea
| | - Kwon Seok Chae
- Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
- Department of Biology Education and DNN; Teacher's College; Taegu 41566 South Korea
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
- Department of Nanoscience and Nanotechnology (DNN), College of Natural Sciences; Kyungpook National University (KNU); Taegu 702-701 South Korea
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13
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Tegafaw T, Bony BA, Xu W, Cha H, Chang Y, Lee SH, Chae KS, Lee GH. Longitudinal Water Proton Relaxivity and In Vivo T₁ MR Images of Mixed Zn(II)/Gd(III) Oxide Nanoparticles. J Nanosci Nanotechnol 2017; 17:2423-2430. [PMID: 29648433 DOI: 10.1166/jnn.2017.13052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mixed Zn(II)/Gd(III) oxide nanoparticles (~8 mole%Zn) with d(avg) of 2.1 nm were synthesized. The D-glucuronic acid coated Zn(II)/Gd(III) oxide nanoparticles showed a longitudinal water proton relaxivity (r₁) of 12.3 s⁻¹mM⁻¹ with r₂/r₁ = 1.1, corresponding to an ideal condition for T₁ MRI contrast agent. We attribute this to reduced magnetization of the mixed nanoparticles owing to non-magnetic Zn in the nanoparticles. Their effectiveness as a T₁ MRI contrast agent was confirmed by acquiring In Vivo T₁ MR images of a mouse after intravenous injection.
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Affiliation(s)
- Yongmin Chang
- Department of Molecular Medicine and Medical and Biological Engineering and Department of Nanoscience and Nanotechnology, School of Medicine, Kyungpook National University and Hospital, Taegu, South Korea
| | - Kwon Seok Chae
- Department of Biology Education and Department of Nanoscience and Nanotechnology, Kyungpook National University, Taegu, South Korea
| | - Gang Ho Lee
- Department of Chemistry and Department of Nanoscience and Nanotechnology, College of Natural Sciences, Kyungpook National University, Taegu, South Korea
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15
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Kim SJ, Xu W, Ahmad MW, Baeck JS, Chang Y, Bae JE, Chae KS, Kim TJ, Park JA, Lee GH. Synthesis of nanoparticle CT contrast agents: in vitro and in vivo studies. Sci Technol Adv Mater 2015; 16:055003. [PMID: 27877838 PMCID: PMC5070024 DOI: 10.1088/1468-6996/16/5/055003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 08/30/2015] [Accepted: 09/11/2015] [Indexed: 05/30/2023]
Abstract
Water-soluble and biocompatible D-glucuronic acid coated Na2WO4 and BaCO3 nanoparticles were synthesized for the first time to be used as x-ray computed tomography (CT) contrast agents. Their average particle diameters were 3.2 ± 0.1 and 2.8 ± 0.1 nm for D-glucuronic acid coated Na2WO4 and BaCO3 nanoparticles, respectively. All the nanoparticles exhibited a strong x-ray attenuation. In vivo CT images were obtained after intravenous injection of an aqueous sample suspension of D-glucuronic acid coated Na2WO4 nanoparticles, and positive contrast enhancements in the kidney were clearly shown. These findings indicate that the nanoparticles reported in this study may be promising CT contrast agents.
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Affiliation(s)
- Sung June Kim
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, Korea
| | - Wenlong Xu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, Korea
| | - Md Wasi Ahmad
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, Korea
| | - Jong Su Baeck
- Department of Molecular Medicine and Medical & Biological Engineering, School of Medicine, KNU and Hospital, Taegu 702-701, Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering, School of Medicine, KNU and Hospital, Taegu 702-701, Korea
- Department of Nanoscience and Nanotechnology, KNU, Taegu 702-701, Korea
| | - Ji Eun Bae
- Department of Nanoscience and Nanotechnology, KNU, Taegu 702-701, Korea
| | - Kwon Seok Chae
- Department of Nanoscience and Nanotechnology, KNU, Taegu 702-701, Korea
- Department of Biology Education, Teacher’s College, KNU, Taegu 702-701, Korea
| | - Tae Jeong Kim
- Institute of Biomedical Engineering Research, KNU, Taegu 702-701, Korea
| | - Ji Ae Park
- Laboratory of Nuclear Medicine Research, Molecular Imaging Research Center, Korea Institute of Radiological Medical Science, Nowon-gil 75, Seoul 139-706, Korea
| | - Gang Ho Lee
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, Korea
- Department of Nanoscience and Nanotechnology, KNU, Taegu 702-701, Korea
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16
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Tegafaw T, Xu W, Ahmad MW, Baeck JS, Chang Y, Bae JE, Chae KS, Kim TJ, Lee GH. Dual-mode T1 and T2 magnetic resonance imaging contrast agent based on ultrasmall mixed gadolinium-dysprosium oxide nanoparticles: synthesis, characterization, and in vivo application. Nanotechnology 2015; 26:365102. [PMID: 26291827 DOI: 10.1088/0957-4484/26/36/365102] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new type of dual-mode T1 and T2 magnetic resonance imaging (MRI) contrast agent based on mixed lanthanide oxide nanoparticles was synthesized. Gd(3+) ((8)S7/2) plays an important role in T1 MRI contrast agents because of its large electron spin magnetic moment resulting from its seven unpaired 4f-electrons, and Dy(3+) ((6)H15/2) has the potential to be used in T2 MRI contrast agents because of its very large total electron magnetic moment: among lanthanide oxide nanoparticles, Dy2O3 nanoparticles have the largest magnetic moments at room temperature. Using these properties of Gd(3+) and Dy(3+) and their oxide nanoparticles, ultrasmall mixed gadolinium-dysprosium oxide (GDO) nanoparticles were synthesized and their potential to act as a dual-mode T1 and T2 MRI contrast agent was investigated in vitro and in vivo. The D-glucuronic acid coated GDO nanoparticles (davg = 1.0 nm) showed large r1 and r2 values (r2/r1 ≈ 6.6) and as a result clear dose-dependent contrast enhancements in R1 and R2 map images. Finally, the dual-mode imaging capability of the nanoparticles was confirmed by obtaining in vivo T1 and T2 MR images.
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Affiliation(s)
- Tirusew Tegafaw
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, Korea
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17
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Bony BA, Baeck JS, Chang Y, Bae JE, Chae KS, Lee GH. Water-soluble d-glucuronic acid coated ultrasmall mixed Ln/Mn (Ln = Gd and Dy) oxide nanoparticles and their application to magnetic resonance imaging. Biomater Sci 2014; 2:1287-1295. [DOI: 10.1039/c4bm00107a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed (A) Gd/Mn and (B) Dy/Mn oxide nanoparticles are confirmed to be potential T1 and/or T2 MRI contrast agents, respectively.
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Affiliation(s)
- Badrul Alam Bony
- Department of Chemistry
- College of Natural Sciences
- Kyungpook National University (KNU)
- Taegu 702-701, South Korea
| | - Jong Su Baeck
- Department of Molecular Medicine and Medical & Biological Engineering
- School of Medicine
- KNU and Hospital
- Taegu 702-701, South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering
- School of Medicine
- KNU and Hospital
- Taegu 702-701, South Korea
- Department of Nanoscience and Nanotechnology
| | - Ji Eun Bae
- Department of Nanoscience and Nanotechnology
- KNU
- Taegu 702-701, South Korea
| | - Kwon Seok Chae
- Department of Nanoscience and Nanotechnology
- KNU
- Taegu 702-701, South Korea
- Department of Biology Education
- Teachers’ College
| | - Gang Ho Lee
- Department of Chemistry
- College of Natural Sciences
- Kyungpook National University (KNU)
- Taegu 702-701, South Korea
- Department of Nanoscience and Nanotechnology
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18
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Kim CR, Baeck JS, Chang Y, Bae JE, Chae KS, Lee GH. Ligand-size dependent water proton relaxivities in ultrasmall gadolinium oxide nanoparticles and in vivo T1 MR images in a 1.5 T MR field. Phys Chem Chem Phys 2014; 16:19866-73. [DOI: 10.1039/c4cp01946f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ligand-size dependent r1 and r2 values of Gd2O3 nanoparticles and in vivo T1 MR images were obtained.
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Affiliation(s)
- Cho Rong Kim
- Department of Chemistry
- College of Natural Sciences
- Kyungpook National University (KNU)
- Taegu 702-701, South Korea
| | - Jong Su Baeck
- Department of Molecular Medicine and Medical & Biological Engineering
- School of Medicine
- KNU and Hospital
- Taegu 702-701, South Korea
| | - Yongmin Chang
- Department of Molecular Medicine and Medical & Biological Engineering
- School of Medicine
- KNU and Hospital
- Taegu 702-701, South Korea
- Department of Nanoscience and Nanotechnology
| | - Ji Eun Bae
- Department of Nanoscience and Nanotechnology
- KNU
- Taegu 702-701, South Korea
| | - Kwon Seok Chae
- Department of Nanoscience and Nanotechnology
- KNU
- Taegu 702-701, South Korea
- Department of Biology Education
- Teachers' College
| | - Gang Ho Lee
- Department of Chemistry
- College of Natural Sciences
- Kyungpook National University (KNU)
- Taegu 702-701, South Korea
- Department of Nanoscience and Nanotechnology
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Xu W, Bony BA, Kim CR, Baeck JS, Chang Y, Bae JE, Chae KS, Kim TJ, Lee GH. Mixed lanthanide oxide nanoparticles as dual imaging agent in biomedicine. Sci Rep 2013; 3:3210. [PMID: 24220641 PMCID: PMC3826100 DOI: 10.1038/srep03210] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 10/29/2013] [Indexed: 01/24/2023] Open
Abstract
There is no doubt that the molecular imaging is an extremely important technique in diagnosing diseases. Dual imaging is emerging as a step forward in molecular imaging technique because it can provide us with more information useful for diagnosing diseases than single imaging. Therefore, diverse dual imaging modalities should be developed. Molecular imaging generally relies on imaging agents. Mixed lanthanide oxide nanoparticles could be valuable materials for dual magnetic resonance imaging (MRI)-fluorescent imaging (FI) because they have both excellent and diverse magnetic and fluorescent properties useful for dual MRI-FI, depending on lanthanide ions used. Since they are mixed nanoparticles, they are compact, robust, and stable, which is extremely useful for biomedical applications. They can be also easily synthesized with facile composition control. In this study, we explored three systems of ultrasmall mixed lanthanide (Dy/Eu, Ho/Eu, and Ho/Tb) oxide nanoparticles to demonstrate their usefulness as dual T2 MRI–FI agents.
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Affiliation(s)
- Wenlong Xu
- Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, South Korea
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Kattel K, Park JY, Xu W, Bony BA, Heo WC, Tegafaw T, Kim CR, Ahmad MW, Jin S, Baeck JS, Chang Y, Kim TJ, Bae JE, Chae KS, Jeong JY, Lee GH. Surface coated Eu(OH)3 nanorods: a facile synthesis, characterization, MR relaxivities and in vitro cytotoxicity. J Nanosci Nanotechnol 2013; 13:7214-7219. [PMID: 24245232 DOI: 10.1166/jnn.2013.8081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The water-soluble and biocompatible D-glucuronic acid coated Eu(OH)3 nanorods (average thickness x average length = 9.0 x 118.3 nm) have been prepared in one-pot synthesis. The D-glucuronic acid coated Eu(OH)3 nanorods showed a strong fluorescence at approximately 600 nm with a narrow emission band width. A cytotoxicity test by using DU145 cells showed that D-glucuronic acid coated Eu(OH)3 nanorods are not toxic up to 100 microM, making them a promising candidate for biomedical applications such as fluorescent imaging. The minimum Eu concentration needed for a conventional confocal imaging was estimated to be approximately 0.1 mM. Therefore, D-glucuronic acid coated Eu(OH)3 nanorods can be applied to fluorescent imaging. However, a very tiny magnetization of approximately 1.2 emu/g at room temperature and at an applied field of 5 tesla was observed. As a result, very small r1 and r2 water proton relaxivities were estimated, implying that surface coated Eu(OH)3 nanorods are not sufficient for MRI contrast agents.
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Affiliation(s)
- Krishna Kattel
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 702-701, South Korea
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21
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Lee EJ, Heo WC, Park JW, Chang Y, Bae JE, Chae KS, Kim TJ, Park JA, Lee GH. D-Glucuronic Acid Coated Gd(IO3)3·2H2O Nanomaterial as a PotentialT1MRI-CT Dual Contrast Agent. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201481] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Jeong Kim T, Seok Chae K, Chang Y, Ho Lee G. Gadolinium Oxide Nanoparticles as Potential Multimodal Imaging and Therapeutic Agents. Curr Top Med Chem 2013; 13:422-33. [DOI: 10.2174/1568026611313040003] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/14/2012] [Accepted: 11/22/2012] [Indexed: 11/22/2022]
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Xu W, Park JY, Kattel K, Bony BA, Heo WC, Jin S, Park JW, Chang Y, Do JY, Chae KS, Kim TJ, Park JA, Kwak YW, Lee GH. A T1, T2 magnetic resonance imaging (MRI)-fluorescent imaging (FI) by using ultrasmall mixed gadolinium–europium oxide nanoparticles. NEW J CHEM 2012. [DOI: 10.1039/c2nj40149e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Kattel K, Park JY, Xu W, Kim HG, Lee EJ, Bony BA, Heo WC, Chang Y, Kim TJ, Do JY, Chae KS, Kwak YW, Lee GH. Water-soluble ultrasmall Eu2O3 nanoparticles as a fluorescent imaging agent: In vitro and in vivo studies. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2011.11.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Xu W, Park JY, Kattel K, Ahmad MW, Bony BA, Heo WC, Jin S, Park JW, Chang Y, Kim TJ, Park JA, Do JY, Chae KS, Lee GH. Fluorescein-polyethyleneimine coated gadolinium oxide nanoparticles as T1 magnetic resonance imaging (MRI)–cell labeling (CL) dual agents. RSC Adv 2012. [DOI: 10.1039/c2ra21052e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Kattel K, Park JY, Xu W, Kim HG, Lee EJ, Bony BA, Heo WC, Lee JJ, Jin S, Baeck JS, Chang Y, Kim TJ, Bae JE, Chae KS, Lee GH. A facile synthesis, in vitro and in vivo MR studies of d-glucuronic acid-coated ultrasmall Ln₂O₃ (Ln = Eu, Gd, Dy, Ho, and Er) nanoparticles as a new potential MRI contrast agent. ACS Appl Mater Interfaces 2011; 3:3325-3334. [PMID: 21853997 DOI: 10.1021/am200437r] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A facile one-pot synthesis of d-glucuronic acid-coated ultrasmall Ln(2)O(3) (Ln = Eu, Gd, Dy, Ho, and Er) nanoparticles is presented. Their water proton relaxivities were studied to address their possibility as a new potential MRI contrast agent. We focused on the d-glucuronic acid-coated ultrasmall Dy(2)O(3) nanoparticle because it showed the highest r(2) relaxivity among studied nanoparticles. Its performance as a T(2) MRI contrast agent was for the first time proved in vivo through its 3 T T(2) MR images of a mouse, showing that it can be further exploited for the rational design of a new T(2) MRI contrast agent at high MR fields.
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Affiliation(s)
- Krishna Kattel
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 702-701, South Korea
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Baek MJ, Park JY, Xu W, Kattel K, Kim HG, Lee EJ, Patel AK, Lee JJ, Chang Y, Kim TJ, Bae JE, Chae KS, Lee GH. Water-soluble MnO nanocolloid for a molecular T1 MR imaging: a facile one-pot synthesis, in vivo T1 MR images, and account for relaxivities. ACS Appl Mater Interfaces 2010; 2:2949-55. [PMID: 20929249 DOI: 10.1021/am100641z] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A facile one-pot synthesis of a water-soluble MnO nanocolloid (i.e., D-glucuronic acid-coated MnO nanoparticle) is presented. The MnO nanoparticle in the MnO nanocolloid was coated with a biocompatible and hydrophilic D-glucuronic acid, and its particle diameter was nearly monodisperse and ranged from 2 to 3 nm. The average hydrodynamic diameter of the MnO nanocolloid was estimated to be 5 nm. The MnO nanoparticle was nearly paramagnetic down to T=3 K. The MnO nanocolloid showed a high longitudinal water proton relaxivity of r1=7.02 s(-1) mM(-1) with the r2/r1 ratio of 6.83 due to five unpaired S-state electrons of Mn(II) ion (S=5/2) as well as a high surface to volume ratio of the MnO nanoparticle. High contrast in vivo T1 MR images were obtained for various organs, showing the capability of the MnO nanocolloid as a sensitive T1 MRI contrast agent. The suggested three key-parameters which control the r1 and r2 relaxivities of nanocolloids (i.e., the S value of a metal ion, the spin structure, and the surface to volume ratio of a nanoparticle) successfully accounted for the observed r1 and r2 relaxivities of the MnO nanocolloid.
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Affiliation(s)
- Myung Ju Baek
- Department of Nanoscience and Nanotechnology, College of Natural Sciences, School of Medicine, Kyungpook National University and Hospital, Taegu 702-701, South Korea
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Sook Choi E, Young Park J, Ju Baek M, Xu W, Kattel K, Hyun Kim J, Jun Lee J, Chang Y, Jeong Kim T, Eun Bae J, Seok Chae K, Jin Suh K, Ho Lee G. Water-Soluble Ultra-Small Manganese Oxide Surface Doped Gadolinium Oxide (Gd2O3@MnO) Nanoparticles for MRI Contrast Agent. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000374] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Park JY, Baek MJ, Choi ES, Woo S, Kim JH, Kim TJ, Jung JC, Chae KS, Chang Y, Lee GH. Paramagnetic ultrasmall gadolinium oxide nanoparticles as advanced T1 MRI contrast agent: account for large longitudinal relaxivity, optimal particle diameter, and in vivo T1 MR images. ACS Nano 2009; 3:3663-3669. [PMID: 19835389 DOI: 10.1021/nn900761s] [Citation(s) in RCA: 311] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Paramagnetic ultrasmall gadolinium oxide (Gd(2)O(3)) nanoparticles with particle diameters (d) of approximately 1 nm were synthesized by using three kinds of Gd(III) ion precursors and by refluxing each of them in tripropylene glycol under an O(2) flow. A large longitudinal relaxivity (r(1)) of water proton of 9.9 s(-1) mM(-1) was estimated. As a result, high contrast in vivo T(1) MR images of the brain tumor of a rat were observed. This large r(1) is discussed in terms of the huge surface to volume ratio (S/V) of the ultrasmall gadolinium oxide nanoparticles coupled with the cooperative induction of surface Gd(III) ions for the longitudinal relaxation of a water proton. It is found from the d dependence of r(1) that the optimal range of d for the maximal r(1), which may be used as an advanced T(1) MRI contrast agent, is 1-2.5 nm.
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Affiliation(s)
- Ja Young Park
- Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu, South Korea
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Byun DS, Lee MG, Chae KS, Ryu BG, Chi SG. Frequent epigenetic inactivation of RASSF1A by aberrant promoter hypermethylation in human gastric adenocarcinoma. Cancer Res 2001; 61:7034-8. [PMID: 11585730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Methylation associated inactivation of RASSF1, a putative tumor suppressor identified at 3p21.3, has been frequently observed in several human malignancies, including lung and breast cancers. To explore the penetrance of RASSF1 in gastric carcinogenesis, we performed expression and mutation analyses of 3 isotypes of RASSF1 (A, B, and C) in 150 gastric specimens, including 15 carcinoma cell lines. RASSF1A and RASSF1B transcripts were not expressed in 60% (9 of 15) and 33% (5 of 15) of gastric carcinoma cell lines, respectively, whereas RASSF1C was detectable in all cell lines. Bisulfite DNA sequencing analysis revealed that the CpG island in the RASSF1A promoter is hypermethylated in all RASSF1A-nonexpressing cell lines. In addition, both RASSF1A and RASSF1B were re-expressed by treatment with the demethylating agent 5-aza-2'-deoxycytidine. Among 90 primary gastric adenocarcinomas examined, 41 (46%) and 19 (21%) expressed no or abnormally low levels of RASSF1A and RASSF1B, respectively, and 12 (13%) tumors showed no expression of both isoforms. Loss or abnormal down-regulation of RASSF1A correlated with tumor stage and grade but not with histological types of tumors. Methylation-specific PCR analysis demonstrated that 95% (39 of 41) of RASSF1A-nonexpressing primary tumors are methylated at the CpG sites in the promoter, whereas none of the adjacent noncancerous or normal tissues are methylated. No somatic mutations were detected in RASSF1 transcripts expressed in unmethylated tumors. However, 10 methylated tumors, including 4 cell lines, showed low genomic levels of RASSF1 and expressed no RASSF1A transcripts, suggesting that RASSF1A inactivation might be caused by both epigenetic and genetic mechanisms in a subset of gastric adenocarcinomas. In conclusion, our data indicate that epigenetic transcriptional silencing of RASSF1, especially RASSF1A isoform, is a frequent event in gastric tumorigenesis and might play an important role in the malignant progression of gastric adenocarcinomas.
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Affiliation(s)
- D S Byun
- Department of Pathology, School of Medicine, Kyung Hee University, Seoul 130-701, Korea
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Han KH, Han KY, Yu JH, Chae KS, Jahng KY, Han DM. The nsdD gene encodes a putative GATA-type transcription factor necessary for sexual development of Aspergillus nidulans. Mol Microbiol 2001; 41:299-309. [PMID: 11489119 DOI: 10.1046/j.1365-2958.2001.02472.x] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The ability to reproduce both sexually and asexually is one of the characteristics of the homothalic ascomycete Aspergillus nidulans. Unlike the other Aspergillus species, A. nidulans undergoes sexual development that seems to be regulated by internal and external stimuli. To begin to understand the sexual reproduction of A. nidulans we previously isolated and characterized several NSD (never in sexual development) mutants that failed to produce any sexual reproductive organs, and identified four complementation groups, nsdA, nsdB, nsdC, and nsdD. The nsdD gene has been isolated, and it is predicted to encode a GATA-type transcription factor with the type IVb zinc finger DNA-binding domain. The mRNA of the nsdD gene started to accumulate in the early phase of vegetative growth, and the level increased as sexual development proceeded. However, it decreased during asexual sporulation and no nsdD mRNA was detected in conidia. Deletion of nsdD resulted in no cleistothecia (fruiting bodies) formation, even under the conditions that preferentially promoted sexual development, indicating that nsdD is necessary for sexual development. In contrast, when the nsdD gene was over-expressed, sexual-specific organ (Hülle cell) was formed even in submerged culture, which normally completely blocked sexual development, and the number of cleistothecia was also dramatically increased on solid medium. These results lead us to propose that the nsdD gene functions in activating sexual development of A. nidulans. Multiple copies of the nsdD gene could suppress nsdB5 and veA1, indicating that either nsdD acts downstream of these genes or possibly functions in overlapping pathway(s).
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Affiliation(s)
- K H Han
- Division of Life Sciences, Wonkwang University, Iksan 570-749, South Korea
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Abstract
Using one of 17 expressed sequence tags (ESTs) previously identified as specific to the late sexual developmental (LSD) stage of Aspergillus nidulans, a gene for the subject EST was isolated. The determined DNA sequences revealed an open reading frame encoding a 356 amino acid polypeptide which does not share a sequence similarity to previously identified genes or proteins. The isolated gene was named lsdA (late sexual development), since it was expressed abundantly at the LSD stage. The lsdA gene expression began earlier than at the LSD stage. Disruption of the lsdA gene in the veA+ background strongly induced sexual development under conditions where sexual development in wild-type strains is almost completely inhibited. In contrast, in the veA1 background, an lsdA null mutant failed to show any phenotypic difference in sexual development under the various conditions tested. These results indicate that the lsdA gene may be responsible for inhibiting the sexual development of veA+ strains by a high concentration of a salt.
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Affiliation(s)
- D W Lee
- Institute for Molecular Biology and Genetics, Chonbuk National University, Republic of Korea
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Hwang SJ, Cheon HM, Kim HJ, Chae KS, Chung DH, Kim MO, Park JS, Seo SJ. cDNA sequence and gene expression of storage protein-2--a juvenile hormone-suppressible hexamerin from the fall webworm, Hyphantria cunea Drury. Comp Biochem Physiol B Biochem Mol Biol 2001; 129:97-107. [PMID: 11337253 DOI: 10.1016/s1096-4959(01)00303-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We isolated and sequenced a cDNA clone corresponding to storage protein-2 (SP-2) from the fall webworm, Hyphantria cunea. The cDNA for SP-2 (2572 bp) codes for a 747-residue protein with a predicted molecular mass of 88.5 kDa. The calculated isoelectric point is 7.6. Multiple alignment analysis of amino acid sequence revealed that SP-2 is most similar to BJHSP2 (74.3% identity). According to both the phylogenetic analyses and criteria for amino acid composition, SP-2 belongs to the subfamily of moderately methionine-rich storage proteins (3.2% methionine, 11.8% aromatic amino acid). Topical application of the JH analog, methoprene, after head ligation of larvae, suppressed transcription of the SP-2 gene, indicating hormonal effects at the transcriptional level. The SP-2 transcript was detected by Northern blot analysis in Malpighian tubules, in addition to the fat body where it was most abundant. The local expression of SP-2 in Malpighian tubules suggests that it may have some function in that organ.
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Affiliation(s)
- S J Hwang
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, 660-707, Chinju, South Korea
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Shin YM, Kwon TH, Kim KS, Chae KS, Kim DH, Kim JH, Yang MS. Enhanced iron uptake of Saccharomyces cerevisiae by heterologous expression of a tadpole ferritin gene. Appl Environ Microbiol 2001; 67:1280-3. [PMID: 11229922 PMCID: PMC92725 DOI: 10.1128/aem.67.3.1280-1283.2001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We genetically engineered Saccharomyces cerevisiae to express ferritin, a ubiquitous iron storage protein, with the major heavy-chain subunit of tadpole ferritin. A 450-kDa ferritin complex can store up to 4,500 iron atoms in its central cavity. We cloned the tadpole ferritin heavy-chain gene (TFH) into the yeast shuttle vector YEp352 under the control of a hybrid alcohol dehydrogenase II and glyceraldehyde-3-phosphate dehydrogenase promoter. We confirmed transformation and expression by Northern blot analysis of the recombinant yeast, by Western blot analysis using an antibody against Escherichia coli-expressed TFH, and with Prussian blue staining that indicated that the yeast-expressed tadpole ferritin was assembled into a complex that could bind iron. The recombinant yeast was more iron tolerant in that 95% of transformed cells, but none of the recipient strain cells, could form colonies on plates containing 30 mM ferric citrate. The cell-associated concentration of iron was 500 microg per gram (dry cell weight) of the recombinant yeast but was 210 microg per gram (dry cell weight) in the wild type. These findings indicate that the iron-carrying capacity of yeast is improved by heterologous expression of tadpole ferritin and suggests that this approach may help relieve dietary iron deficiencies in domesticated animals by the use of the engineered yeast as a feed and food supplement.
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Affiliation(s)
- Y M Shin
- Institute for Molecular Biology and Genetics, Chonbuk National University, Chonju, Chonbuk, Korea
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35
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Abstract
The rpl3 gene and the rpl37 gene for Aspergillus nidulans ribosomal protein L3 (RPL3) and RPL37, which were identified as located on chromosome I and chromosome III, respectively, were isolated from chromosome-specific cosmid libraries. The nucleotide sequences of both of the rpl3 gene and the rpl37 gene identified the ORFs of 392 amino acids and 92 amino acids, respectively. Both of the two genes were present in a single copy. The expression of both genes together with two other house-keeping genes, the rps16 gene for RPS16 and the gene for gamma-actin, was analyzed during sexual development. All four genes showed nearly identical expression patterns in that each gene expression reached its maximum after 2 h, decreased thereafter, and increased again after 30-40 h of induction of sexual development.
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Affiliation(s)
- H Y Jeong
- Institute of Basic Sciences, and Division of Biological Sciences, Chonbuk National University, Chonju, 561-756, Chonbuk, South Korea
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36
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Lee SH, Chae KS, Nan JX, Sohn DH. The increment of purine specific sodium nucleoside cotransporter mRNA in experimental fibrotic liver induced by bile duct ligation and scission. Arch Pharm Res 2000; 23:613-9. [PMID: 11156184 DOI: 10.1007/bf02975250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We investigated the expression profiles of rat fibrotic liver induced by bile duct ligation and scission (BDL/S) using the 3'-directed cDNA libraries. The possibility that the 3'directed cDNA library represents the mRNA population faithfully was examined by northern blots. During the northern analysis based on fibrotic liver expression profile, we found for the first time that purine specific sodium nucleoside cotransporter (SPNT) was upregulated in BDL/S-induced fibrotic liver. To determine whether the accumulation of bile juice could affect the expression of SPNT mRNA or not, we examined the change of SPNT mRNA expression at 3, 14, 28 days after BDL/S operation. No change in SPNT expression was observed in rat liver at 3 days after surgery. In contrast, there were significant increases in SPNT expression at 14 and 28 days after surgery. We also examined whether chronic liver damage affected SPNT mRNA expression. SPNT mRNA level was significantly increased in BDL/S-induced fibrotic rat liver, whereas no significant change was obserbed in fibrotic livers chronically exposed to carbon tetrachloride or dimethylnitrosamine. From the above results, although further study might be needed, it was considered that the increment of SPNT mRNA in BDL/S liver morphological compatibility to human was remarkable.
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Affiliation(s)
- S H Lee
- Department of Pharmacy, and Medicinal Resources Research Center, Wonkwang University, Iksan, Chonbuk, Korea
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Kawamoto S, Yoshii J, Mizuno K, Ito K, Miyamoto Y, Ohnishi T, Matoba R, Hori N, Matsumoto Y, Okumura T, Nakao Y, Yoshii H, Arimoto J, Ohashi H, Nakanishi H, Ohno I, Hashimoto J, Shimizu K, Maeda K, Kuriyama H, Nishida K, Shimizu-Matsumoto A, Adachi W, Ito R, Kawasaki S, Chae KS. BodyMap: a collection of 3' ESTs for analysis of human gene expression information. Genome Res 2000; 10:1817-27. [PMID: 11076866 PMCID: PMC310944 DOI: 10.1101/gr.151500] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BodyMap is a collection of site-directed 3' expressed sequence tags (ESTs) (gene signatures, GSs) that contains the transcript compositions of various human tissues and was the first systematic effort to acquire gene expression data. For the construction of BodyMap, cDNA libraries were made, preserving abundance information and histologic resolutions of tissue mRNAs. By sequencing 164,000 randomly selected clones, 88,587 GSs that represent chromosomally coded transcripts have been collected from 51 human organs and tissues. They were clustered into 18,722 independent 3' termini from transcripts, and more than 3000 of these were not found among ESTs assembled in UniGene (Build 75). Assessment of the prevalence of polyadenylation signals and comparison with GenBank cDNAs indicated that there was no significant contamination by internally primed cDNAs or genomic fragments but that there was a relatively high incidence (12%) of alternative polyadenylation sites. We evaluated the sensitivity and resolution of expression information in BodyMap by in silico Northern hybridization and selection of tissue-specific gene probes. BodyMap is a unique resource for estimation of the absolute abundance of transcripts and selection of gene probes for efficient hybridization-based gene expression profiling.
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Affiliation(s)
- S Kawamoto
- Institute for Molecular and Cellular Biology, Osaka University, Osaka 565-0871, Japan
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Jeong HY, Han DM, Jahng KY, Chae KS. The rpl16a gene for ribosomal protein L16A identified from expressed sequence tags is differentially expressed during sexual development of Aspergillus nidulans. Fungal Genet Biol 2000; 31:69-78. [PMID: 11170736 DOI: 10.1006/fgbi.2000.1233] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We obtained 305 expressed sequence tags (ESTs), which are from the poly(A) site to the most proximal MboI site, from mycelia at the early sexual developmental (ESD) stage of Aspergillus nidulans. By comparison of these ESTs with those obtained previously from the vegetative stage and from the late sexual developmental stage followed by Northern blot analyses, genes of 17 ESTs were identified as being expressed more abundantly at the ESD stage than at the vegetative stage. Five of 17 genes were expressed more abundantly in the presence of the veA gene or the nsdD gene, suggesting that these 5 genes may be involved in sexual development. In a gene of one EST, appearing three times among 305 ESTs and identified by GenBank, polyadenylation seemed to occur at two sites. Nucleotide sequences of the gene having the EST and its cDNA revealed that the gene can code for a 202-amino-acid polypeptide with an estimated molecular mass of 23 kDa. The deduced amino acid showed 73% identity to Saccharomyces cerevisiae ribosomal protein L16A (RPL16A), and therefore the gene was named rpl16a. A. nidulans RPL16A had a putative leucine zipper motif and a basic leucine zipper motif like those of other organisms. The expression level of the rpl16a gene, present as a single copy in this organism, reached a maximum after 2 h, decreased thereafter, and increased again 30 to 50 h after the end of induction of sexual development. These results clearly indicated that the rpl16a gene is expressed differentially during sexual development.
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Affiliation(s)
- H Y Jeong
- Institute for Molecular Biology and Genetics, and Division of Biological Sciences, Chonbuk National University, Chonju, 561-756, Republic of Korea
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Chae KS, Lee IH, Choi CS, Kim HR. Purification and characterization of chitin-binding proteins from the hemolymph of sweet potato hornworm, Agrius convolvuli. Comp Biochem Physiol B Biochem Mol Biol 1999; 124:475-81. [PMID: 10665375 DOI: 10.1016/s0305-0491(99)00143-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Three chitin-binding proteins (CBPs: CBP9, CBP15, CBP66) were identified from the larval hemolymph of sweet potato hornworm, Agrius convolvuli. Two (CBP9 and CBP15) of them have been isolated and purified by gel filtration (Superdex HR 75), cation-exchange chromatography (Mono S), and reverse-phase chromatography (muRPC PC 2.1/3). In experiments to detect CBPs in hemolymph, we examined whether ionic strength and existence of bovine serum albumin in the incubation solution influenced binding affinity of CBPs to chitin. The N-terminal sequences of three CBPs were determined by the automated Edman degradation and showed the sequence homology in basic local alignment search tool search CBP15 and CBP66 were quite similar to lysozymes and bovine serum albumins, respectively. In contrast, CBP9 is not similar to any other known protein, as judged from databank comparisons. Therefore, we concluded that CBP9 is a novel protein with binding capacity to chitin that is a component of the fungal cell wall. CBP9 has no antibacterial activity against Escherichia coli and Micrococcus luteus, and also showed negative response in hemagglutination assay. CBP9 is confirmed as a monomer with a molecular mass of 9.14 kDa by electron spray ionization and matrix-assisted laser desorption ionization mass spectrometry.
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Affiliation(s)
- K S Chae
- Department of Biology, Korea University, Seoul, South Korea
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42
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Lee DW, Lee SH, Hwang HA, Kim JH, Chae KS. Quantitative analysis of gene expression in sexual structures of Aspergillus nidulans by sequencing of 3'-directed cDNA clones. FEMS Microbiol Lett 1996; 138:71-6. [PMID: 8674973 DOI: 10.1111/j.1574-6968.1996.tb08137.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We constructed a 3'-directed cDNA library of cleistothecia and Hülle cells of Aspergillus nidulans to examine gene expression patterns of the sexual structures and to have probes necessary to isolate sexual structure-specific genes. Sequencing of 360 randomly selected cDNA clones yielded 272 expressed sequence tags (ESTs), most of which probably represent frequently or less expressed genes in sexual structures of A. nidulans. Among the 272 ESTs, 33 ESTs (87 cDNA clones) appeared more than once and 2 ESTs appeared 6 times; 9 ESTs matched GenBank entries. When compared with sequences obtained from a mycelial 3'-directed cDNA library of A. nidulans, 28 out of 33 ESTs seem to be sexual structure-specific. Northern blot analyses of 20 ESTs showed that 17 are sexual structure-specific. The remaining three ESTs also hybridized with RNA isolated from vegetative mycelia. These results suggest that analyses of ESTs from different cell types or tissues can readily demonstrate gene expression patterns of specific cell types and identify cell type-specific cDNA probes.
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Affiliation(s)
- D W Lee
- Department of Molecular Biology, Chonbuk Nation University, Chonju, South Korea
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Abstract
A scheme is presented for computing the electrophoretic mobility of proteins in free solution, accounting for the details of the protein shape and charge distribution. The method of Teubner is implemented using a boundary integral formulation within which the velocity distribution, the equilibrium electrical potential around the molecule, and the potential distribution due to the applied field are solved for numerically using the boundary element method. Good agreement of the numerical result is obtained for spheres with the corresponding semi-analytical specialization of Henry's analysis. For protein systems, the method is applied to lysozyme and ribonuclease A. In both cases, the predicted mobility tensors are fairly isotropic, with the resulting scalar mobilities being significantly smaller than for spheres of equal volume and net charge. Comparisons with previously published experimental results for ribonuclease show agreement to be excellent in the presence of a net charge, but poorer at the point of zero charge. The approach may be useful for evaluating approximate methods for estimating protein electrophoretic mobilities and for using electrophoretic measurements to obtain insight into charge distributions on proteins.
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Affiliation(s)
- K S Chae
- Department of Chemical Engineering, University of Delaware, Newark 19716, USA
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Chae KS, Murakawa K, Okubo K, Matsubara K. The use of overlapping and tailed short primers in the chromosomal assignment of short cDNAs by the polymerase chain reaction. Gene 1994; 142:199-205. [PMID: 8194752 DOI: 10.1016/0378-1119(94)90261-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
For the PCR-based chromosomal assignment of very short cDNA fragments specifically designed primers are required. We tested primers with very short core sequences that are identical or complementary to known cDNA sequences, with or without tails at the 5' ends. The lower limit of the core length for PCR using human chromosome templates was 14 nucleotides (nt) when they have tails. The minimal length of the tail was 2 nt when it was attached to the 5' end of a 14-nt core. In the absence of a tail, 15 nt are needed for the core to act properly. The overall size of the short cDNA fragments that could be assigned was further reduced by using a pair of primers that overlap at the 3' ends. The limits of the free energy of overlap were about -1.9 kcal/mol at 45 degrees C, -2.9 kcal/mol at 50 degrees C and -4.5 kcal/mol at 55 degrees C. A combination of these features in a primer pair allowed cDNA fragments as short as 30 nt to be assigned.
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Affiliation(s)
- K S Chae
- Institute for Molecular and Cellular Biology, Osaka University, Japan
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Hori N, Chae KS, Murakawa K, Matoba R, Fukushima A, Okubo K, Matsubara K. A human cDNA sequence homologue of bovine phosphatidylethanolamine-binding protein. Gene X 1994; 140:293-4. [PMID: 8144042 DOI: 10.1016/0378-1119(94)90562-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Sequencing of about 1000 3'-directed cDNA clones from the human HepG2 cell line revealed that about half of them represent transcripts of abundantly or moderately expressed genes, about 70% of which are novel. We identified one of these clones as encoding the human homologue of bovine phosphatidylethanolamine-binding protein.
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Affiliation(s)
- N Hori
- Institute for Molecular and Cellular Biology, Osaka University, Japan
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Chae KS, Murakawa K, Okubo K, Matsubara K. Chromosomal assignment of short cDNA sequences by PCR using overlapping and tailed short primers. DNA Res 1994; 1:149-55. [PMID: 7584041 DOI: 10.1093/dnares/1.3.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Overlapping primers and tailed short primers are effective agents for mapping very short cDNA sequences. By using such primers, human cDNAs as short as 32 nucleotides in length can produce PCR bands. Using these and other primers of ordinary size, 44 cDNAs were assigned to chromosomes, of which 24 were assigned to single chromosomes, and 2 were assigned to two chromosomes and two were assigned to three chromosomes, respectively. Among the 24 cDNAs, all of which matched GenBank entries, 6 cDNAs were observed to map to the same chromosomes as reported previously.
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Affiliation(s)
- K S Chae
- Institute for Molecular and Cellular Biology, Osaka University, Japan
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Chae KS, Yoo OJ. Cloning of the lambda resistant genes from Brevibacterium albidum and Proteus vulgaris into Escherichia coli. Biochem Biophys Res Commun 1986; 140:1101-5. [PMID: 2946296 DOI: 10.1016/0006-291x(86)90748-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Genes from Proteus vulgaris ATCC13315 and Brevibacterium albidum ATCC15831 were introduced into Escherichia coli, which rendered the host resistant to coliphage lambda. The clones transformed by any one of the two recombinant plasmids, pRMG101 or pRMG216, were totally resistant against the infection of virulent lambda and N4, but sensitive to ø80, T4 and T7. However, when maltose transport systems of the clones were induced by maltose, the clones were no more resistant to the phage: thus, this phenotype was thought to be due to the inhibition of phage adsorption onto the cell surface. The gene product was shown by SDS-PAGE of membrane protein-enriched extract of the clone. Molecular weight as measured was about 40,000 dalton, which coincide with that inferred from the nucleotide sequences.
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