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Honda Y, Onodera S, Takemoto H, Harun NFC, Nomoto T, Matsui M, Tomoda K, Sun Y, Miura Y, Nishiyama N. Thermo-Responsive Polymer-siRNA Conjugates Enabling Artificial Control of Gene Silencing around Body Temperature. Pharm Res 2023; 40:157-165. [PMID: 36307662 DOI: 10.1007/s11095-022-03414-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/10/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Controlling small interfering RNA (siRNA) activity by external stimuli is useful to exert a selective therapeutic effect at the target site. This study aims to develop a technology to control siRNA activity in a thermo-responsive manner, which can be utilized even at temperatures close to body temperature. METHODS siRNA was conjugated with a thermo-responsive copolymer that was synthesized by copolymerization of N-isopropylacrylamide (NIPAAm) and hydrophilic N,N-dimethylacrylamide (DMAA) to permit thermally controlled interaction between siRNA and an intracellular gene silencing-related protein by utilizing the coil-to-globule phase transition of the copolymer. The composition of the copolymer was fine-tuned to obtain lower critical solution temperature (LCST) around body temperature, and the phase transition behavior was evaluated. The cellular uptake and gene silencing efficiency of the copolymer-siRNA conjugates were then investigated in cultured cells. RESULTS The siRNA conjugated with the copolymer with LCST of 38.0°C exhibited ~ 11.5 nm of the hydrodynamic diameter at 37°C and ~ 9.8 nm of the diameter at 41°C, indicating the coil-globule transition above the LCST. In line with this LCST behavior, its cellular uptake and gene silencing efficiency were enhanced when the temperature was increased from 37°C to 41°C. CONCLUSION By fine-tuning the LCST behavior of the copolymer that was conjugated with siRNA, siRNA activity could be controlled in a thermo-responsive manner around the body temperature. This technique may offer a promising approach to induce therapeutic effects of siRNA selectively in the target site even in the in vivo conditions.
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Affiliation(s)
- Yuto Honda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-0821, Japan
| | - Sayaka Onodera
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Noor Faizah Che Harun
- Universiti Kuala Lumpur - Branch Campus Malaysian Institute of Chemical and Bioengineering Technology, Lot 1988, Vendor City, Taboh Naning, 78000, Alor Gajah, Melaka, Malaysia
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Yudi Sun
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Yutaka Miura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan.
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan.
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-0821, Japan.
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Nomoto T, Yao Y, Inoue Y, Suzuki M, Kanamori K, Takemoto H, Matsui M, Tomoda K, Nishiyama N. Fructose-functionalized polymers to enhance therapeutic potential of p-boronophenylalanine for neutron capture therapy. J Control Release 2021; 332:184-193. [PMID: 33636247 DOI: 10.1016/j.jconrel.2021.02.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/17/2021] [Indexed: 11/24/2022]
Abstract
In boron neutron capture therapy (BNCT), boron drugs should accumulate selectively within a tumor and be quickly cleared from blood and normal organs. However, it is usually challenging to achieve the efficient tumor accumulation and the quick clearance simultaneously. Here we report the complex composed of a fructose-modified poly(ethylene glycol)-poly(l-lysine) block copolymer and p-boronophenylalanine, termed PEG-P[Lys/Lys(fructose)]-BPA, as a boron delivery system permitting selective accumulation within the target tumor with quick clearance from normal organs as well as blood. Our PEG-P[Lys/Lys(fructose)]-BPA could be internalized into tumor cells through LAT1 amino acid transporter-mediated endocytosis and retain in the targeted cells, thereby accomplishing more efficient accumulation and retention in a subcutaneous tumor than clinically used fructose-BPA complexes. Importantly, the moderately cationic property of the polymer facilitated renal clearance and PEG-P[Lys/Lys(fructose)]-BPA exhibited high accumulation contrast between the target tumor and the blood/normal organ. Finally, upon thermal neutron irradiation, PEG-P[Lys/Lys(fructose)]-BPA significantly inhibited the tumor growth in mice. PEG-P[Lys/Lys(fructose)]-BPA may be a promising boron delivery system for BNCT.
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Affiliation(s)
- Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
| | - Ying Yao
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Yukiya Inoue
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Minoru Suzuki
- Division of Particle Radiation Oncology, Particle Radiation Oncology Research Center, Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010, Asashiro-nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Kaito Kanamori
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan; Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821, Japan.
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Takemoto H, Inaba T, Nomoto T, Matsui M, Liu X, Toyoda M, Honda Y, Taniwaki K, Yamada N, Kim J, Tomoda K, Nishiyama N. Polymeric modification of gemcitabine via cyclic acetal linkage for enhanced anticancer potency with negligible side effects. Biomaterials 2020; 235:119804. [DOI: 10.1016/j.biomaterials.2020.119804] [Citation(s) in RCA: 13] [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] [Received: 08/22/2019] [Revised: 12/27/2019] [Accepted: 01/20/2020] [Indexed: 12/14/2022]
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Nomoto T, Inoue Y, Yao Y, Suzuki M, Kanamori K, Takemoto H, Matsui M, Tomoda K, Nishiyama N. Poly(vinyl alcohol) boosting therapeutic potential of p-boronophenylalanine in neutron capture therapy by modulating metabolism. Sci Adv 2020; 6:eaaz1722. [PMID: 32010792 PMCID: PMC6976296 DOI: 10.1126/sciadv.aaz1722] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/25/2019] [Indexed: 05/10/2023]
Abstract
In the current clinical boron neutron capture therapy (BNCT), p-boronophenylalanine (BPA) has been the most powerful drug owing to its ability to accumulate selectively within cancers through cancer-related amino acid transporters including LAT1. However, the therapeutic success of BPA has been sometimes compromised by its unfavorable efflux from cytosol due to their antiport mechanism. Here, we report that poly(vinyl alcohol) (PVA) can form complexes with BPA through reversible boronate esters in aqueous solution, and the complex termed PVA-BPA can be internalized into cancer cells through LAT1-mediated endocytosis, thereby enhancing cellular uptake and slowing the untoward efflux. In in vivo study, compared with clinically used fructose-BPA complexes, PVA-BPA exhibited efficient tumor accumulation and prolonged tumor retention with quick clearance from bloodstream and normal organs. Ultimately, PVA-BPA showed critically enhanced antitumor activity in BNCT. The facile technique proposed in this study offers an approach for drug delivery focusing on drug metabolism.
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Affiliation(s)
- Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
- Corresponding author. (T.N.); (N.N.)
| | - Yukiya Inoue
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Ying Yao
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Minoru Suzuki
- Division of Particle Radiation Oncology, Particle Radiation Oncology Research Center, Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010 Asashiro-nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Kaito Kanamori
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
- Innovation Center of Nanomedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821, Japan
- Corresponding author. (T.N.); (N.N.)
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Takemoto H, Wang CL, Nomoto T, Matsui M, Tomoda K, Nishiyama N. Pyruvate Responsiveness Based on α-Oxohydrazone Formation for Intracellular siRNA Release from Polyion Complex-Based Carriers. Biomacromolecules 2019; 20:2305-2314. [DOI: 10.1021/acs.biomac.9b00261] [Citation(s) in RCA: 4] [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: 10/26/2022]
Affiliation(s)
- Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Chih-Ling Wang
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
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Muttaqien SE, Nomoto T, Takemoto H, Matsui M, Tomoda K, Nishiyama N. Poly( N-isopropylacrylamide)-Based Polymer-Inducing Isothermal Hydrophilic-to-Hydrophobic Phase Transition via Detachment of Hydrophilic Acid-Labile Moiety. Biomacromolecules 2019; 20:1493-1504. [PMID: 30566830 DOI: 10.1021/acs.biomac.8b01465] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The polymerization of N-isopropylacrylamide (NIPAAm) with ionizable monomers results in pH-responsive lower critical solution temperature (LCST) polymer which works in an ionization-dependent manner. However, gradual ionization of the comonomer occurs at a broad pH range due to the electrostatic field generated by the polymers, limiting the extent of LCST shift in response to pH change. Furthermore, excess introduction of comonomer may dull phase transition behavior. Here, we report the development of an ionization-independent LCST polymer that exerts a sharp isothermal hydrophilic-to-hydrophobic phase transition in response to slight pH change. Our polymer has a poly(NIPAAm/2-aminoisoprpylacrylamide (AIPAAm)) (P(NIPAAm/AIPAAm)) backbone that retains the continuous structural similarity of N-alkyl groups for preserving phase transition sensitivity, and primary amine for forming hydrophilic acid-labile 2-propionic-3-methylmaleic (PMM) amide linkage. The PMM moiety improves the polymer's hydrophilicity and drastically increases the LCST. Detachment of the PMM moiety in response to mild acidic condition (pH < 6.8) lowers the LCST to that of original P(NIPAAm/AIPAAm), permitting isothermal pH-responsive phase transition. Utilizing this mechanism, P(NIPAAm/AIPAAm) modified with PMM amide linkage exhibits a sharp hydrophilic-to-hydrophobic transition at a physiological temperature (37 °C) and, strikingly, facilitates interaction with cultured cells. Most importantly, our polymer showed significantly higher accumulation within a solid tumor after systemic injection compared to conventional PNIPAAm, which may be due to its phase transition responding to slightly acidic tumor microenvironment. Thus, this study provides a novel polymer that offers delicate control of LCST and pH-responsiveness suitable for use in even fuzzy biological environments.
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Affiliation(s)
- Sjaikhurrizal El Muttaqien
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Department of Life Science and Technology, School of Life Science and Technology , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Center for Pharmaceutical and Medical Technology , Agency for the Assessment and Application of Technology (BPPT), LAPTIAB I, PUSPITEK , Serpong , Banten 15314 , Indonesia
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Department of Life Science and Technology, School of Life Science and Technology , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Department of Life Science and Technology, School of Life Science and Technology , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Department of Life Science and Technology, School of Life Science and Technology , Tokyo Institute of Technology , 4259 Nagatsutacho, Midori-ku , Yokohama , Kanagawa 226-8503 , Japan.,Innovation Center of Nanomedicine (iCONM) , Kawasaki Institute of Industrial Promotion , 3-25-14 Tonomachi, Kawasaki-ku , Kawasaki , Kanagawa 210-0821 , Japan
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Suzuki K, Iwai H, Yagi M, Fujisawa T, Kanda A, Konishi M, Kobayashi Y, Tomoda K, Yamashita T. Indications for partial parotidectomy using retrograde dissection of the marginal mandibular branch of the facial nerve for benign tumours of the parotid gland. Br J Oral Maxillofac Surg 2018; 56:727-731. [PMID: 30115458 DOI: 10.1016/j.bjoms.2018.08.002] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/03/2018] [Indexed: 10/28/2022]
Abstract
The aims of this study were to evaluate the efficacy of partial parotidectomy using retrograde dissection of the marginal mandibular branch of the facial nerve for benign tumours of the parotid gland and to establish the indications for its use. We examined 106 consecutive patients with previously untreated benign tumours in the lower portion of the parotid gland who were treated by parotidectomy. The first group (anterograde group, n=52) consisted of those who had standard anterograde parotidectomy. The remaining patients, who underwent retrograde parotidectomy, were further divided into two groups: those in whom the upper edge of the tumour was located below the mastoid tip (below mastoid group, n=46) or those in whom it was above the mastoid tip (above mastoid group, n=8). The operating time was significantly shorter in the below mastoid group (141.2, 127.5, and 98.1minutes, respectively) as was intraoperative blood loss (41.1, 53.0, and 24.4ml, respectively), compared with the other two groups. There was a higher incidence of facial nerve dysfunction in the above mastoid group postoperatively (4/8) than in the other two groups. The results suggested that the presence of a tumour of any size located below the mastoid tip is a good indication for parotidectomy using retrograde dissection of the marginal mandibular branch of the facial nerve.
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Affiliation(s)
- K Suzuki
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital.
| | - H Iwai
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - M Yagi
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - T Fujisawa
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - A Kanda
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - M Konishi
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - Y Kobayashi
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - K Tomoda
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
| | - T Yamashita
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University Hospital
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Ranneh A, Takemoto H, Sakuma S, Awaad A, Nomoto T, Mochida Y, Matsui M, Tomoda K, Naito M, Nishiyama N. An Ethylenediamine‐based Switch to Render the Polyzwitterion Cationic at Tumorous pH for Effective Tumor Accumulation of Coated Nanomaterials. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Abdul‐Hackam Ranneh
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Shunya Sakuma
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Aziz Awaad
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
- Department of Zoology Faculty of Science Sohag University The University Street Naser City Sohag 82524 Egypt
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Yuki Mochida
- Innovation Center of NanoMedicine (iCONM) Kawasaki Institute of Industrial Promotion 3-25-14 Tonomachi Kawasaki-ku Kawasaki 212-0821 Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Mitsuru Naito
- Center for Disease Biology and Integrative Medicine Graduate School of Medicine The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research Tokyo Institute of Technology R1-11, 4259, Nagatsuta, Midori-ku Yokohama Kanagawa 226-8503 Japan
- Innovation Center of NanoMedicine (iCONM) Kawasaki Institute of Industrial Promotion 3-25-14 Tonomachi Kawasaki-ku Kawasaki 212-0821 Japan
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Ranneh AH, Takemoto H, Sakuma S, Awaad A, Nomoto T, Mochida Y, Matsui M, Tomoda K, Naito M, Nishiyama N. An Ethylenediamine-based Switch to Render the Polyzwitterion Cationic at Tumorous pH for Effective Tumor Accumulation of Coated Nanomaterials. Angew Chem Int Ed Engl 2018; 57:5057-5061. [PMID: 29512262 DOI: 10.1002/anie.201801641] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Indexed: 02/06/2023]
Abstract
Polyzwitterions are employed as coating polymers for biomaterials to induce an antifouling property on the surface. Fine-tuning the betaine structure switches the antifouling property to be interactive with anionic tissue constituents in response to a tumorous pH gradient. The ethylenediamine moiety in the carboxybetaine enabled stepwise protonation and initiated the di-protonation process around tumorous pH (6.5). The net charge of the developed polyzwitterion (PGlu(DET-Car)) was thus neutral at pH 7.4 for antifouling, but was cationic at pH 6.5 for interaction with anionic constituents. Quantum dots coated with PGlu(DET-Car) exhibited comparable stealth and enhanced tumor accumulation relative to the PEG system. The present study provides a novel design of smart switchable polyzwitterion based on a precise control of the net charge.
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Affiliation(s)
- Abdul-Hackam Ranneh
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Shunya Sakuma
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Aziz Awaad
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan.,Department of Zoology, Faculty of Science, Sohag University, The University Street, Naser City, Sohag, 82524, Egypt
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Yuki Mochida
- Innovation Center of NanoMedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 212-0821, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Mitsuru Naito
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan.,Innovation Center of NanoMedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 212-0821, Japan
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10
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Takeuchi I, Nobata S, Oiri N, Tomoda K, Makino K. Biodistribution and excretion of colloidal gold nanoparticles after intravenous injection: Effects of particle size. Biomed Mater Eng 2017; 28:315-323. [DOI: 10.3233/bme-171677] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Drug Delivery Research, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Physical Pharmaceutics, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
| | - Sho Nobata
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
| | - Naoto Oiri
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
| | - Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Drug Delivery Research, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Physical Pharmaceutics, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kimiko Makino
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Drug Delivery Research, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
- Center for Physical Pharmaceutics, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
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11
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12
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Huang CH, Takemoto H, Nomoto T, Tomoda K, Matsui M, Nishiyama N. Cover Picture: Utility of the 2-Nitrobenzenesulfonamide Group as a Chemical Linker for Enhanced Extracellular Stability and Cytosolic Cleavage in siRNA-Conjugated Polymer Systems (ChemMedChem 1/2017). ChemMedChem 2017. [DOI: 10.1002/cmdc.201600622] [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: 11/10/2022]
Affiliation(s)
- Chih Hao Huang
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
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Abstract
PURPOSE The aim of tumor-specific chemoradiotherapy is to achieve synergistic anticancer effects with clinically acceptable toxicity. Our previous studies showed that Pluronic P85 augments radiation cancer cell killing of (±)-gossypol in vitro. In this study, the radiosensitizing effect of (-)-gossypol, more potent Bcl protein inhibitor, with Pluronic P85 was investigated. MATERIALS AND METHODS The inhibitory effect of (-)-gossypol solubilized Pluronic P85 with 0-8 Gy of radiation on clonogenic survival rate of A549 human lung adenocarcinoma cells was investigated in vitro. The anticancer effect of (-)-gossypol-solubilized Pluronic P85 with fractionated radiation of 15 Gy was assessed by A549 tumor-bearing mice. RESULTS (-)-Gossypol-loaded Pluronic P85 was found to be a more potent radiosensitizer in vitro. Pluronic P85 increased the anti-proliferative activity of (-)-gossypol against A549 cells (82 ± 42 versus 190 ± 60 nM). In addition, the combination of P85 and (-)-gossypol effectively reduced clonogenic survival of A549 cells: (11 ± 5%) compared to (-)-gossypol and P85 alone (62 ± 27% and 93 ± 13%, respectively), and enhanced radiation cancer cell killing. In vivo, P85 (200 mg/kg/day) and (-)-gossypol (15 mg/kg/day) could be safely injected intravenously over 5 days and enhanced radiation-related tumor control in an A549 xenograft model. CONCLUSION Pluronic P85 and (-)-gossypol act as a novel dual agent radiosensitizer and holds promise as a chemoradiotherapeutic strategy.
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Affiliation(s)
- Keishiro Tomoda
- a Pharmaceutical Sciences Division, School of Pharmacy , University of Wisconsin , Madison , USA
| | - Hsin C Chiang
- a Pharmaceutical Sciences Division, School of Pharmacy , University of Wisconsin , Madison , USA
| | - Kevin R Kozak
- b Mercy Regional Cancer Center Radiation Oncology , Janesville , Wisconsin , USA
| | - Glen S Kwon
- a Pharmaceutical Sciences Division, School of Pharmacy , University of Wisconsin , Madison , USA.,c Faculty of Pharmacy , King Abdulaziz , Jeddah , Saudi Arabia
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Huang CH, Takemoto H, Nomoto T, Tomoda K, Matsui M, Nishiyama N. Utility of the 2-Nitrobenzenesulfonamide Group as a Chemical Linker for Enhanced Extracellular Stability and Cytosolic Cleavage in siRNA-Conjugated Polymer Systems. ChemMedChem 2016; 12:19-22. [DOI: 10.1002/cmdc.201600488] [Citation(s) in RCA: 6] [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] [Received: 09/26/2016] [Revised: 10/26/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Chih Hao Huang
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science; Institute of Innovative Research; Tokyo Institute of Technology; R1-11, 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226-8503 Japan
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15
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Murakami T, Kurachi H, Nakamura H, Tsuda K, Miyake A, Tomoda K, Hori S, Kozuka T. Cervical Invasion of Endometrial Carcinoma — Evaluation by Parasagittal MR Imaging. Acta Radiol 2016. [DOI: 10.1177/028418519503600307] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Twenty-seven consecutive patients were examined by T2-(1 800/70 ms) and postcontrast T1-weighted (600/15) spin echo (SE) or dynamic (200/15) SE MR imaging to determine the usefulness of parasagittal MR imaging in assessing cervical invasion of endometrial carcinoma. The images were obtained in a direction parallel to the longitudinal axis of the uterus (parasagittal). The cervical epithelium, being hyperintense on the late phase dynamic and postcontrast T1-weighted SE images, had disappeared partially or totally in all 4 patients with cervical invasion. The enhanced cervical epithelium was completely seen in one patient with the tumor protruding into the cervical canal in a polyp-like form without cervical epithelial invasion. The same was also seen in the 22 patients with the tumor remaining in the corpus cavity. The enhanced parasagittal MR images facilitated the evaluation of the extent of the endometrial carcinoma.
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16
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Murakami T, Nakamura H, Hori S, Tomoda K, Mitani T, Nakanishi K, Hashimoto T, Tsuda K, Kozuka T, Monden M, Wakasa K. Detection of Viable Tumor Cells in Hepatocellular Carcinoma following Transcatheter Arterial Chemoembolization with Iodized Oil. Acta Radiol 2016. [DOI: 10.1177/028418519303400419] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To evaluate the effect of transcatheter arterial chemoembolization (TACE) with iodized oil for hepatocellular carcinoma (HCC), dynamic turbo-fast low angle shot (turbo-FLASH) (TR/TE/flip angle/TI, 8.5/4.6/10/200) MR imaging with gadopentetate dimeglumine was performed in 10 patients with HCC after TACE with iodized oil and before partial hepatectomy. Immediately after 0.05 mmol/kg b.w. of gadopentetate dimeglumine was administered intravenously, 10 images were obtained in the first 20 s (early phase). Then, one image every 30 s from 1 to 3 min (late phase), and images at 5 min and 7 min (delayed phase) were obtained serially. In the early phase, HCC showed no enhancement in 5 patients, partial hyperintense enhancement in 4, and total hyperintense enhancement in one. Viable regions of the tumor, evaluated at histopathology, showed hyperintense enhancement relative to the surrounding liver parenchyma in the early phase, while necrotic regions showed no enhancement. Both viable and necrotic regions showed lower signal intensities than the surrounding liver parenchyma in both late and delayed phases. By using dynamic turbo-FLASH MR imaging, we were able to accurately evaluate the effect of TACE with iodized oil for HCC in 8 of the 10 patients. In 2 patients, in whom small viable cells were seen in the HCC, viable regions could not be detected with our technique. It is concluded that turbo-FLASH dynamic MR imaging was useful for evaluating the effect of TACE for HCC.
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Ikezoe J, Morimoto S, Akira M, Arisawa J, Takashima S, Tomoda K, Nakanishi K, Kadowaki K, Kozuka T, Shiozaki H, Ogawa Y. Computed Tomography following Endoscopic Sclerotherapy of Esophageal Varices. Acta Radiol 2016. [DOI: 10.1177/028418518702800409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Computed tomography of the chest following endoscopic injection sclerotherapy for esophageal varices was performed in 17 procedures in 13 patients. CT scans were obtained before and within 48 hours after the procedure. CT findings included: esophageal wall thickening; a low-attenuating lesion within the wall of the esophagus with varying appearances, either laminated, localized, or inhomogeneous; a mediastinal lesion; pleural effusion; and various types of pulmonary changes such as atelectasis, pleural-based lesions, dilatation of peripheral pulmonary vessels, and nodular lesions. However, on follow-up CT they had regressed or disappeared. The changes in the mediastinum and pleural space might be caused by direct extension of inflammation from the esophagus, but those in the lungs, especially dilatation of peripheral vessels, may be caused by the sclerosing agent passing to the pulmonary vessels.
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18
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Che Harun NF, Takemoto H, Nomoto T, Tomoda K, Matsui M, Nishiyama N. Artificial Control of Gene Silencing Activity Based on siRNA Conjugation with Polymeric Molecule Having Coil-Globule Transition Behavior. Bioconjug Chem 2016; 27:1961-4. [PMID: 27506383 DOI: 10.1021/acs.bioconjchem.6b00322] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new strategy for controlling gene silencing activity of siRNA in the cell was developed in the present study. siRNA was linearly conjugated with PNIPAAm, where coil-globule transition of the conjugated PNIPAAm allows thermoresponsive exposure of the vicinal siRNA molecule; a coil form of PNIPAAm (T < LCST) inhibits siRNA interaction with gene silencing-related proteins due to the steric hindrance effect, while a globule form of PNIPAAm (T > LCST) allows a ready access of siRNA to gene silencing pathway. As a result, at T > LCST, PNIPAAm-siRNA elicited effective association of siRNA with a gene silencing-related protein of Ago2, while siRNA recruitment into the gene silencing pathway was significantly suppressed at T < LCST. Ultimately, gene silencing efficacy of PNIPAAm-siRNA was close to unconjugated siRNA at T > LCST (∼80%), while it was dramatically decreased to ∼20% at T < LCST, suggesting that coil-globule transition of the conjugated polymer can control the bioactivity of the vicinal siRNA molecule.
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Affiliation(s)
- Noor Faizah Che Harun
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Keishiro Tomoda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , R1-11, 4259, Nagatsuta, Midori-Ku, Yokohama, Kanagawa 226-8503, Japan
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Tomoda K, Tam YT, Cho H, Buehler D, Kozak KR, Kwon GS. Triolimus: A Multi-Drug Loaded Polymeric Micelle Containing Paclitaxel, 17-AAG, and Rapamycin as a Novel Radiosensitizer. Macromol Biosci 2016; 17. [PMID: 27365266 DOI: 10.1002/mabi.201600194] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/03/2016] [Indexed: 01/19/2023]
Abstract
Triolimus is a multi-drug loaded polymeric micelle containing paclitaxel (PTX), 17-allylamino-17-demethoxygeldanamycin (17-AAG), and rapamycin (RAP). This study examines the radiosensitizing effect of Triolimus in vitro and in vivo. Radiosensitizing effects of Triolimus on A549 cells are dose dependent and at 2 × 10-9 m, Triolimus shows significant radiosensitization even at low radiation doses (2 Gy). By sensitivity enhancement ratio, PTX alone, dual drug combinations, and Triolimus treatment at 2 × 10-9 m have radiosensitizing effects with potency as follows: PTX alone (PTX) > PTX and RAP (P/R) > Triolimus (TRIO) > PTX and 17-AAG (P/17) >17-AAG and RAP (17/R). In vivo, fractionated radiation of 15 Gy preceded by infusion of PTX alone, dual drug combinations, or an intermediate dose of Triolimus (Int. TRIO: PTX/17-AAG/RAP at 15/15/7.5 mg kg-1 ) strongly inhibits A549 tumor growth. Notably, pretreatment with high dose of Triolimus (High TRIO: PTX/17-AAG/RAP at 60/60/30 mg kg-1 ) before the fractionated radiation leads to tumor control for up to 24 weeks. An enhanced radiosensitizing effect is observed without an increase in acute toxicity compared to PTX alone or radiation alone. These results suggest that further investigations of Triolimus in combination with radiation therapy are merited.
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Affiliation(s)
- Keishiro Tomoda
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, WI, 53705, USA
| | - Yu Tong Tam
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, WI, 53705, USA
| | - Hyunah Cho
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, WI, 53705, USA
| | - Darya Buehler
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, 3170 UW Medical Foundation Centennial Building (MFCB), 1685 Highland Avenue, Madison, WI, 53705, USA
| | - Kevin R Kozak
- Mercy Regional Cancer Center, 1000 Mineral Point Ave, Janesville, WI, 53548, USA
| | - Glen S Kwon
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, WI, 53705, USA.,Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea
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Tomoda K, Chiang C, Kozak KR, Kwon GS. Examination of Gossypol-Pluronic Micelles as Potential Radiosensitizers. AAPS J 2015; 17:1369-75. [PMID: 26246329 DOI: 10.1208/s12248-015-9809-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 07/26/2015] [Indexed: 12/28/2022]
Abstract
Chemoradiotherapy, the combination of chemotherapy and radiotherapy to treat cancer, has the potential to enhance local therapeutic effects and simultaneously treat systemic disease. However, chemoradiotherapy may also enhance normal tissue effects leading to both acute and late toxicities. Furthermore, subtherapeutic chemoradiotherapy may result in aggressive tumor repopulation. Tumor-specific radiosensitizing chemotherapy may yield a synergistic therapeutic effect and avoid augmentation of normal tissue toxicity. In this study, the radiosensitizing effects of gossypol were investigated. Also, Pluronics were studied for gossypol solubilization and co-radiosensitization effects. Gossypol inhibits Bcl-2 and Bcl-XL, antiapoptotic proteins that are overexpressed in various cancer cells. Pluronic micelles (P85, F88, L35, and P123) effectively encapsulated gossypol, raising its water solubility by more than 1000-fold. Cytotoxic, anticlonogenic, and radiosensitizing effects were evaluated to characterize gossypol and Pluronic combinations. Gossypol and P85 had the strongest antiproliferative effect on A549 human lung adenocarcinoma cells in a cell viability assay. The IC50 value was seven times lower than gossypol only treatment (330 ± 70 nM vs 2400 ± 400 nM, (mean ± SE)). Gossypol and P85 showed significant inhibition of clonogenic survival, approximately 30% inhibition, compared to treatment with gossypol alone. An experimental sequencing study demonstrated greater inhibition of clonogenic survival when drug treatment followed radiation compared to a sequence of drug treatment followed by radiation. These results suggest that Pluronic micelles readily solubilize gossypol and that the combination of gossypol and P85 may augment the therapeutic effects of ionizing radiation.
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Affiliation(s)
- Keishiro Tomoda
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, Wisconsin, 53705, USA
| | - Carol Chiang
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, Wisconsin, 53705, USA
| | - Kevin R Kozak
- Mercy Regional Cancer Center, 1000 Mineral Point Ave, Janesville, Wisconsin, 53548, USA
| | - Glen S Kwon
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, Wisconsin, 53705, USA. .,Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea.
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Cho H, Lai TC, Tomoda K, Kwon GS. Polymeric micelles for multi-drug delivery in cancer. AAPS PharmSciTech 2015; 16:10-20. [PMID: 25501872 DOI: 10.1208/s12249-014-0251-3] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 11/25/2014] [Indexed: 01/16/2023] Open
Abstract
Drug combinations are common in cancer treatment and are rapidly evolving, moving beyond chemotherapy combinations to combinations of signal transduction inhibitors. For the delivery of drug combinations, i.e., multi-drug delivery, major considerations are synergy, dose regimen (concurrent versus sequential), pharmacokinetics, toxicity, and safety. In this contribution, we review recent research on polymeric micelles for multi-drug delivery in cancer. In concurrent drug delivery, polymeric micelles deliver multi-poorly water-soluble anticancer agents, satisfying strict requirements in solubility, stability, and safety. In sequential drug delivery, polymeric micelles participate in pretreatment strategies that "prime" solid tumors and enhance the penetration of secondarily administered anticancer agent or nanocarrier. The improved delivery of multiple poorly water-soluble anticancer agents by polymeric micelles via concurrent or sequential regimens offers novel and interesting strategies for drug combinations in cancer treatment.
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Tomoda K, Yabuki N, Terada H, Makino K. Surfactant free preparation of PLGA nanoparticles: The combination of antisolvent diffusion with preferential solvation. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tomoda K, Yabuki N, Terada H, Makino K. Application of polymeric nanoparticles prepared by an antisolvent diffusion with preferential solvation for iontophoretic transdermal drug delivery. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3342-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Nakamura T, Baba S, Yamamura Y, Tsuruta T, Matsubara S, Tomoda K, Tsukano M. Combined treatment with cyclophosphamide and prednisolone is effective for secondary amyloidosis with SAA1γ/γ genotype in a patient with rheumatoid arthritis. Mod Rheumatol 2014; 10:160-4. [DOI: 10.3109/s101650070024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Takeuchi I, Shimakura K, Ohtake H, Takayanagi J, Tomoda K, Nakajima T, Terada H, Makino K. Nondestructive Analysis of Structure and Components of Tablet Coated with Film by the Usage of Terahertz Time-Domain Reflection Spectroscopy. J Pharm Sci 2014; 103:256-61. [DOI: 10.1002/jps.23797] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 10/29/2013] [Accepted: 11/01/2013] [Indexed: 11/11/2022]
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Tomoda K, Watanabe A, Suzuki K, Inagi T, Terada H, Makino K. Enhanced transdermal permeability of estradiol using combination of PLGA nanoparticles system and iontophoresis. Colloids Surf B Biointerfaces 2012; 97:84-9. [PMID: 22609586 DOI: 10.1016/j.colsurfb.2012.04.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/03/2012] [Accepted: 04/04/2012] [Indexed: 11/26/2022]
Abstract
Estradiol is a therapeutic agent for treatment of perimenopausal symptoms and osteoporosis. Conventional oral or intravenous administration of estradiol has many problems, such as, metabolization in gastrointestinal tract and liver, pain by using an injection needle, rapid increase of drug levels in blood and fast clearance with unwanted side effects including thrombosis, endometriosis and uterus carcinoma. The use of nanocarriers for transdermal delivery has been studied because of their ability to deliver therapeutic agents for long time with a controlled ratio, escaping from the first pass effect by liver. In this study, permeability of estradiol-loaded PLGA nanoparticles through rat skin was studied. Higher amount of estradiol was delivered through skin when estradiol was loaded in nanoparticles than estradiol was free molecules. Also, iontophoresis was applied to enhance the permeability of nanoparticles. When iontophoresis was applied, permeability of estradiol-loaded PLGA nanoparticles was much higher than that obtained by simple diffusion of them through skin, since they have negative surface charges. They were found to penetrate through follicles mainly. Also, enhanced permeability effect of estradiol by using nanoparticle system and iontophoresis were observed in vivo. The combination of charged nanoparticle system with iontophoresis is useful for effective transdermal delivery of therapeutic agents.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
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Takeuchi I, Tomoda K, Nakajima T, Terada H, Kuroda H, Makino K. Estimation of crystallinity of trehalose dihydrate microspheres by usage of terahertz time-domain spectroscopy. J Pharm Sci 2012; 101:3465-72. [PMID: 22499332 DOI: 10.1002/jps.23147] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/14/2012] [Accepted: 03/15/2012] [Indexed: 11/10/2022]
Abstract
Crystalline state of pharmaceutical materials is of great importance in the preparation of pharmaceutics because their physicochemical properties affect bioavailability, quality of products, therapeutic level, and manufacturing process. In this study, we have estimated the crystallinity of trehalose dihydrate microspheres by measuring terahertz (THz) spectroscopy. The commercially available trehalose dihydrate takes in general a crystalline state, but trehalose dihydrate microspheres prepared by using spray-drying method are in an amorphous state. We have prepared amorphous anhydrous trehalose by using melt-quenched method from crystalline trehalose dihydrate. We have measured the absorbance of trehalose dihydrate containing amorphous anhydrous trehalose (0%, 25%, 50%, 75%, and 100%) using THz time-domain spectroscopy (THz-TDS) to prepare calibration curves. Using the calibration curves, we have estimated the crystallinity of trehalose dihydrate microspheres prepared by using spray-drying method. Our results suggest that THz-TDS is well suited to distinguish crystallinity differences in pharmaceutical compounds.
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Affiliation(s)
- Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba 278-8510, Japan
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Inoue T, Nagata M, Yukawa H, Ogura M, Fujisawa T, Miyamoto M, Suzuki K, Tomoda K. Evaluation of postoperative function in patients undergoing reconstruction following resection of superior and lateral oropharyngeal cancer: long-term outcomes of reconstruction with the Gehanno method. Int J Oral Maxillofac Surg 2011; 41:9-16. [PMID: 22057121 DOI: 10.1016/j.ijom.2011.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 08/03/2011] [Accepted: 10/07/2011] [Indexed: 10/15/2022]
Abstract
Resection of the superior or lateral wall of the cancer-affected oropharynx can often lead to disturbed nasal breathing, dysphagia, and dysarthria. The authors used the Gehanno method to reconstruct these surgical defects and achieved favourable functional recovery soon after surgery. The present study was undertaken to analyze the long-term outcome and usefulness of this method. Reconstruction was carried out using the Gehanno method in 36 patients during the 10-year period between 1997 and 2007. Both short-term and long-term evaluations of the postoperative function were performed in 12 of the 36 cases. The postoperative function was favourably maintained in all 12 cases, but gradual deterioration was noted in some cases in which the forearm flap had been used for reconstruction. Conventionally, the forearm flap is considered suitable for the reconstruction of complex structures such as the oropharynx because of its excellent flexibility. The results suggest that if the forearm flap is used for reconstruction using the Gehanno method, the surrounding tissue is likely to undergo change over time. The rectus abdominis myocutaneous flap should be considered as the first-choice flap for reconstruction using the Gehanno method.
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Affiliation(s)
- T Inoue
- Department of Otolaryngology, Kansai Medical University, Osaka, Japan.
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Shimano T, Fyk–Kolodziej B, Asako M, Tomoda K, Bledsoe S, Pan Z, Molitor S, Holt A. Histological and Physiological Investigation of Channelrhodopsin–2 and Halorhodopsin in the Dorsal Cochlear Nucleus. J Otol 2011. [DOI: 10.1016/s1672-2930(11)50002-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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30
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Tomoda K, Ariizumi H, Nakaji T, Makino K. Hydroxyapatite particles as drug carriers for proteins. Colloids Surf B Biointerfaces 2010; 76:226-35. [DOI: 10.1016/j.colsurfb.2009.10.039] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 10/24/2009] [Accepted: 10/24/2009] [Indexed: 11/29/2022]
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31
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Tomoda K, Asahiyama M, Ohtsuki E, Nakajima T, Terada H, Kanebako M, Inagi T, Makino K. Preparation and properties of carrageenan microspheres containing allopurinol and local anesthetic agents for the treatment of oral mucositis. Colloids Surf B Biointerfaces 2009; 71:27-35. [DOI: 10.1016/j.colsurfb.2009.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Revised: 12/31/2008] [Accepted: 01/01/2009] [Indexed: 10/21/2022]
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32
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Agnihotri SM, Ohshima H, Terada H, Tomoda K, Makino K. Electrophoretic mobility of colloidal gold particles in electrolyte solutions. Langmuir 2009; 25:4804-4807. [PMID: 19366230 DOI: 10.1021/la803671t] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The electrophoretic mobility of five different-sized spherical colloidal gold particles has been measured in aqueous potassium chloride (KCl) and sodium phosphate electrolyte solutions over the concentration range 0.005-0.154 M solutions. The measured mobilities are independent of electrolyte type and dependent on electrolyte concentration. Interpretation of the mobilities using the simplified electrokinetic formula of Ohshima (J Colloid Interface Sci. 2001, 239, 587-590) indicates that the magnitude of the effective electrokinetic charge density and total charge of particle remains apparently constant with electrolyte concentration. The effective electrokinetic surface charge is negative in KCl and sodium phosphate solutions. The zeta-potential shows a maximum absolute value in both electrolyte solutions (negative).
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Affiliation(s)
- Sagar M Agnihotri
- Center for Drug Delivery Research, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
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33
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Tomoda K, Ohkoshi T, Hirota K, Sonavane GS, Nakajima T, Terada H, Komuro M, Kitazato K, Makino K. Preparation and properties of inhalable nanocomposite particles for treatment of lung cancer. Colloids Surf B Biointerfaces 2009; 71:177-82. [PMID: 19264458 DOI: 10.1016/j.colsurfb.2009.02.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 02/02/2009] [Accepted: 02/04/2009] [Indexed: 11/28/2022]
Abstract
Nanoparticles have widely been studied in drug delivery research for targeting and controlled release. The aim of this article is application of nanoparticles as an inhalable agent for treatment of lung cancer. To deposit effectively deep the particles in the lungs, the PLGA nanoparticles loaded with the anticancer drug 6-{[2-(dimethylamino)ethyl]amino}-3-hydroxyl-7H-indeno[2,1-c]quinolin-7-one dihydrochloride (TAS-103) were prepared in the form of nanocomposite particles. The nanocomposite particles consist of the complex of drug-loaded nanoparticles and excipients. In this study, the anticancer effects of the nanocomposite particles against the lung cancer cell line A549. Also, the concentration of TAS-103 in blood and lungs were determined after administration of the nanocomposite particles by inhalation to rats. TAS-103-loaded PLGA nanoparticles were prepared with 5% and 10% of loading ratio by spray drying method with trehalose as an excipient. The 5% drug-loaded nanocomposite particles were more suitable for inhalable agent because of the sustained release of TAS-103 and higher FPF value. Cytotoxicity of nanocomposite particles against A549 cells was higher than that of free drug. When the nanocomposite particles were administered in rats by inhalation, drug concentration in lung was much higher than that in plasma. Furthermore, drug concentration in lungs administered by inhalation of nanocomposite particles was much higher than that after intravenous administration of free drug. From these results, the nanocomposite particle systems could be promising for treatment of lung cancer.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Maeda N, Osuga K, Higashihara H, Shimazu K, Morii E, Mikami K, Nakazawa T, Hori S, Tomoda K, Nakamura H. Abstract No. 153: In Vivo Evaluation of Cisplatin-Loaded Superabsorbent Polymer Microspheres for Use in Chemoembolization of VX2 Liver Tumors. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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35
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Sonavane G, Tomoda K, Makino K. Biodistribution of colloidal gold nanoparticles after intravenous administration: Effect of particle size. Colloids Surf B Biointerfaces 2008; 66:274-80. [DOI: 10.1016/j.colsurfb.2008.07.004] [Citation(s) in RCA: 770] [Impact Index Per Article: 48.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Revised: 07/05/2008] [Accepted: 07/07/2008] [Indexed: 11/15/2022]
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Masaki Y, Dong L, Kurose N, Kitagawa K, Morikawa Y, Yamamoto M, Takahashi H, Shinomura Y, Imai K, Saeki T, Azumi A, Nakada S, Sugiyama E, Matsui S, Origuchi T, Nishiyama S, Nishimori I, Nojima T, Yamada K, Kawano M, Zen Y, Kaneko M, Miyazaki K, Tsubota K, Eguchi K, Tomoda K, Sawaki T, Kawanami T, Tanaka M, Fukushima T, Sugai S, Umehara H. Proposal for a new clinical entity, IgG4-positive multiorgan lymphoproliferative syndrome: analysis of 64 cases of IgG4-related disorders. Ann Rheum Dis 2008; 68:1310-5. [PMID: 18701557 DOI: 10.1136/ard.2008.089169] [Citation(s) in RCA: 397] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Mikulicz's disease (MD) has been considered as one manifestation of Sjögren's syndrome (SS). Recently, it has also been considered as an IgG(4)-related disorder. OBJECTIVE To determine the differences between IgG(4)-related disorders including MD and SS. METHODS A study was undertaken to investigate patients with MD and IgG(4)-related disorders registered in Japan and to set up provisional criteria for the new clinical entity IgG(4)-positive multiorgan lymphoproliferative syndrome (IgG(4)+MOLPS). The preliminary diagnostic criteria include raised serum levels of IgG(4) (>135 mg/dl) and infiltration of IgG(4)(+) plasma cells in the tissue (IgG(4)+/IgG+ plasma cells >50%) with fibrosis or sclerosis. The clinical features, laboratory data and pathologies of 64 patients with IgG(4)+MOLPS and 31 patients with typical SS were compared. RESULTS The incidence of xerostomia, xerophthalmia and arthralgia, rheumatoid factor and antinuclear, antiSS-A/Ro and antiSS-B/La antibodies was significantly lower in patients with IgG(4)+MOLPS than in those with typical SS. Allergic rhinitis and autoimmune pancreatitis were significantly more frequent and total IgG, IgG(2), IgG(4) and IgE levels were significantly increased in IgG(4)+MOLPS. Histological specimens from patients with IgG(4)+MOLPS revealed marked IgG(4)+ plasma cell infiltration. Many patients with IgG(4)+MOLPS had lymphocytic follicle formation, but lymphoepithelial lesions were rare. Few IgG(4)+ cells were seen in the tissue of patients with typical SS. Thirty-eight patients with IgG(4)+MOLPS treated with glucocorticoids showed marked clinical improvement. CONCLUSION Despite similarities in the involved organs, there are considerable clinical and pathological differences between IgG(4)+MOLPS and SS. Based on the clinical features and good response to glucocorticoids, we propose a new clinical entity: IgG(4)+MOLPS.
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Affiliation(s)
- Y Masaki
- Department of Hematology and Immunology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku-gun, Ishikawa, 920-0293, Japan.
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37
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Ogawa R, Ishiguro H, Kuwabara Y, Kimura M, Mitsui A, Mori Y, Mori R, Tomoda K, Katada T, Harada K, Fujii Y. Identification of candidate genes involved in the radiosensitivity of esophageal cancer cells by microarray analysis. Dis Esophagus 2008; 21:288-97. [PMID: 18477249 DOI: 10.1111/j.1442-2050.2007.00759.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Radiotherapy plays a key role in the control of tumor growth in esophageal cancer patients. To identify the patients who will benefit most from radiation therapy, it is important to know the genes that are involved in the radiosensitivity of esophageal cancer cells. Hence, we examined the global gene expression in radiosensitive and radioresistant esophageal squamous cell carcinoma cell lines. Radiosensitivities of 13 esophageal cancer cell lines were measured. RNA was extracted from each esophageal cancer cell line and a normal esophageal epithelial cell line, and the global gene expression profiles were analyzed using a 34 594-spot oligonucleotide microarray. In the clonogenic assay, one cell line (TE-11) was identified to be highly sensitive to radiation, while the other cell lines were found to be relatively radioresistant. We identified 71 candidate genes that were differentially expressed in TE-11 by microarray analysis. The up-regulated genes included CABPR, FABP5, DSC2, GPX2, NME, CBR3, DOCK8, and ABCC5, while the down-regulated genes included RPA1, LDOC1, NDN, and SKP1A. Our investigation provided comprehensive information on genes related to radiosensitivity of esophageal cancer cells; this information can serve as a basis for further functional studies.
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Affiliation(s)
- R Ogawa
- Nagoya City University Graduate School of Medical Sciences, Oncology, Immunology and Surgery, Nagoya, Japan
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Takashima N, Ishiguro H, Kuwabara Y, Kimura M, Mitui A, Mori Y, Mori R, Tomoda K, Hamaguchi M, Ogawa R, Katada T, Harada K, Fujii Y. Gene expression profiling of the response of esophageal carcinoma cells to cisplatin. Dis Esophagus 2008; 21:230-5. [PMID: 18430104 DOI: 10.1111/j.1442-2050.2007.00761.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cisplatin is the most common chemotherapeutic agent used in esophageal cancer. However, sensitivity to cisplatin varies greatly between patients. It is important to identify the gene(s) that are related to the sensitivity to cisplatin in esophageal cancer patients. The IC50 for cisplatin was measured for 15 esophageal cancer cell lines (TE1-5, TE8-15, KYSE140, and KYSE150). RNA was extracted from each of these cell lines and a normal esophageal epithelial cell line, namely, Het1A, and gene expression profiles were analyzed using an oligonucleotide microarray consisting of 34 594 genes. TE4 was highly resistant and TE12, 14, and 15 were sensitive to cisplatin. Thirty-seven genes were differentially expressed in the cisplatin-resistant esophageal cancer cell line. Our investigation provides a list of candidate genes that may be associated with resistance to cisplatin in esophageal cancer cells, which may serve as a basis for additional functional studies.
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Affiliation(s)
- N Takashima
- Nagoya City University Graduate School of Medical Sciences, Oncology, Immunology and Surgery, Nagoya, Japan
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Tomoda K, Ohkoshi T, Kawai Y, Nishiwaki M, Nakajima T, Makino K. Preparation and properties of inhalable nanocomposite particles: Effects of the temperature at a spray-dryer inlet upon the properties of particles. Colloids Surf B Biointerfaces 2008; 61:138-44. [PMID: 17890065 DOI: 10.1016/j.colsurfb.2007.07.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Revised: 07/27/2007] [Accepted: 07/28/2007] [Indexed: 11/22/2022]
Abstract
To overcome the disadvantages both of microparticles and nanoparticles for inhalation, we have prepared nanocomposite particles as drug carriers targeting lungs. The nanocomposite particles having sizes about 2.5 microm composed of sugar and drug-loaded PLGA nanoparticles can reach deep in the lungs, and they are decomposed into drug-loaded PLGA nanoparticles in the alveoli. Sugar was used as a binder of PLGA nanoparticles to be nanocomposite particles and is soluble in alveolar lining fluid. The primary nanoparticles containing bioactive materials were prepared by using a probe sonicator. And then they were spray dried with carrier materials, such as trehalose and lactose. The effects of inlet temperature of spray dryer were studied between 60 and 120 degrees C and the kind of sugars upon properties of nanocomposite particles. When the inlet temperatures were 80 and 90 degrees C, nanocomposite particles with average diameters of about 2.5 microm are obtained and they are decomposed into primary nanoparticles in water, in both sugars are used as a binder. But, those prepared above 100 degrees C are not decomposed into nanoparticles in water, while the average diameter was almost 2.5 microm. On the other hand, nanocomposite particles prepared at lower inlet temperatures have larger sizes but better redispersion efficiency in water. By the measurements of aerodynamic diameters of the nanocomposite particles prepared with trehalose at 70, 80, and 90 degrees C, it was shown that the particles prepared at 80 degrees C have the highest fine particle fraction (FPF) value and the particles are suitable for pulmonary delivery of bioactive materials deep in the lungs. Meanwhile the case with lactose, the particles prepared at 90 degrees C have near the best FPF value but they have many particles larger than 11 microm.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki Noda Chiba 278-8510, Japan
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Tomoda K, Ohkoshi T, Nakajima T, Makino K. Preparation and properties of inhalable nanocomposite particles: effects of the size, weight ratio of the primary nanoparticles in nanocomposite particles and temperature at a spray-dryer inlet upon properties of nanocomposite particles. Colloids Surf B Biointerfaces 2008; 64:70-6. [PMID: 18343097 DOI: 10.1016/j.colsurfb.2008.01.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 01/09/2008] [Accepted: 01/10/2008] [Indexed: 10/22/2022]
Abstract
Nanoparticles are expected to be applicable to inhalation as carrier but there exist disadvantages because of their size. Their deposition dose to the lung will be small. To overcome this problem and utilize nanoparticles for inhalation, we have prepared nanocomposite particles as drug carriers targeting lungs. The nanocomposite particles are prepared as drug-loaded nanoparticles-additive complex to reach deep in the lungs and to be decomposed into nanoparticles when they deposit into lung. In this study, we examined the effect of preparation condition--inlet temperature, size of primary nanoparticles and weight ratio of primary nanoparticles--on the property of nanocomposite particles. When the size of primary nanoparticles was 400 nm and inlet temperature was 90 degrees C, only the nanocomposite particles containing between 45 and 55% of primary nanoparticles could be decomposed into nanoparticles in water. On the other hand, when the inlet temperature was 80 degrees C, nanocomposite particles were decomposed into nanoparticles independent of the weight ratio of primary nanoparticles. Also, the aerodynamic diameter of the nanocomposite particles was between 1.5 and 2.5 microm, independent of the weight ratio of primary nanoparticles. When the size of primary nanoparticles was 200 nm and inlet temperature was 70 degrees C, nanocomposite particles were decomposed into nanoparticles independent of the weight ratio of primary nanoparticles. Also, the aerodynamic diameters of them were almost 2.0 microm independent of the weight ratio of primary nanoparticles. When the nanocomposite particles containing nanoparticles with the size of 200 nm are prepared at 80 degrees C, no decomposition into nanoparticles was observed in water. Fine particle values, FPF, of the nanocomposite particles were not affected by the weight ratio of primary nanoparticles when they were prepared at optimum inlet temperature.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki Noda, Chiba 278-8510, Japan
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Nakamura T, Higashi S, Tomoda K, Tsukano M, Baba S. Efficacy of etanercept in patients with AA amyloidosis secondary to rheumatoid arthritis. Clin Exp Rheumatol 2007; 25:518-22. [PMID: 17888205] [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: 05/17/2023]
Abstract
OBJECTIVE The efficacy of biological therapies in rheumatoid arthritis (RA) is well known, but their hypothetical benefit in amyloid A (AA) amyloidosis secondary to RA still remains to be considered. We evaluated the efficacy and safety of etanercept in serum amyloid A (SAA) 1.3 allele Japanese patients with AA amyloidosis secondary to RA. METHODS Seven RA patients with histologically confirmed AA amyloidosis and renal involvement who were treated with etanercept were enrolled. They all had the SAA1.3 allele, which has been shown to be a risk factor not only for the association of AA amyloidosis but also for a poor prognosis in Japanese RA patients. Efficacy was assessed as a sustained decrease in RA inflammation and an amelioration of renal function. RESULTS RA inflammation and AA amyloidosis were improved and stabilized after 43.4 +/- 16.5 weeks. At week 20 the number of tender (p = 0.017) and swollen (p = 0.017) joints, and levels of serum C-reactive protein (p = 0.018) and albumin (p = 0.045) had improved. The values for SAA, serum creatinine, calculated creatinine clearance, and proteinuria also ameliorated. No severe adverse events were observed. One patient eventually had to go on hemodialysis but her tolerance of etanercept remained stable. CONCLUSION Etanercept can be used safely and effectively in AA amyloidosis secondary to RA with renal involvement, and is of clinical benefit in the short-term, even in patients on hemodialysis. It appears that SAA1.3 allele may be used as a clinical parameter for the introduction of etanercept in Japanese RA with AA amyloidosis.
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Affiliation(s)
- T Nakamura
- Section of Internal Medicine and Rheumatology, Kumamoto Center for Arthritis and Rheumatology, Kumamoto, Japan.
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Hasegawa T, Hirota K, Tomoda K, Ito F, Inagawa H, Kochi C, Soma GI, Makino K, Terada H. Phagocytic activity of alveolar macrophages toward polystyrene latex microspheres and PLGA microspheres loaded with anti-tuberculosis agent. Colloids Surf B Biointerfaces 2007; 60:221-8. [PMID: 17683920 DOI: 10.1016/j.colsurfb.2007.06.017] [Citation(s) in RCA: 26] [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] [Received: 05/04/2007] [Revised: 06/11/2007] [Accepted: 06/17/2007] [Indexed: 11/19/2022]
Abstract
Phagocytosis of alveolar macrophages (Mphis) toward poly(lactic-co-glycolic acid) (PLGA) microspheres (MS) loaded with the anti-tuberculosis agent rifampicin (RFP-PLGA MS) has been shown to be effective for the treatment of tuberculosis. The phagocytosis should be evaluated in terms of that toward reference MS. We chose polystyrene latex (PSL) MS as a reference. In this study, phagocytic activity of cell line NR8383, derived from rat alveolar Mphi, toward PSL MS with various diameters was examined by incubating the cells for 4h at 37 degrees C with various numbers of PSL MS per Mphi cell (MS/Mphi=0.1-10). The results were then compared with those of the phagocytosis toward RFP-PLGA MS. We determined the phagocytic activity by counting the population of Mphi cells that had phagocytosed MS (N) and the number of particles phagocytosed (n) in microscopic fields. Both N and n for PSL and RFP-PLGA MS increased in general with an increase in MS/Mphi, but both of these values for PSL MS were smaller than those for RFP-PLGA MS. Phagocytosis of the particles were dependent on the particle size; i.e., of the PSL MS the 6-mum ones were taken up by Mphi the most, and the RFP-PLGA MS 3 microm in diameter seemed to be phagocytosed the most efficiently, although we were not able to determine exactly the phagocytosis of 6- and 10-microm RFP-PLGA MS. From the changes in N and n values with MS/Mphi, the phagocytosis of RFP-PLGA MS was likely to enhance the phagocytic activity of Mphi cells, but this effect did not seem to be significant for PSL MS.
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Affiliation(s)
- Taizo Hasegawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Tomoda K, Makino K. Effects of lung surfactants on rifampicin release rate from monodisperse rifampicin-loaded PLGA microspheres. Colloids Surf B Biointerfaces 2007; 55:115-24. [PMID: 17197161 DOI: 10.1016/j.colsurfb.2006.11.030] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2006] [Revised: 11/25/2006] [Accepted: 11/25/2006] [Indexed: 11/21/2022]
Abstract
We have prepared inhalable and monodisperse poly(lactide-co-glycolide) (PLGA) microspheres targeting tubercle bacilli residing in alveolar macrophages. The effects of pulmonary surfactant on the rifampicin (RFP) release rate from RFP-loaded poly (lactide-co-glycolide) microspheres were studied. Also, those of their surface properties of RFP-loaded PLGA microspheres were studied. The RFP release from RFP/PLGA microspheres was accelerated by adsorption of pulmonary surfactant on the particle surface. The fastest RFP release rate was observed from pulmonary surfactant-adsorbed PLGA particles in pH 7.4 buffer solution compared with those in pH 4.0 buffer solution and saline solution. The slowest release rate was observed in the case when saline solution was used as dispersion phase of RFP/PLGA microspheres, although RFP release rate increased by the addition of pulmonary surfactant. From these results it is suggested that when RFP/PLGA microspheres are administrated by inhalation, the RFP release rates from the particles which are not taken up by alveolar macrophages and remain in the alveoli will be small. On the other hand, the RFP release rates and release amounts will be high after RFP/PLGA microspheres are taken up by alveolar macrophages existing in phagosomes, but they become relatively small after RFP/PLGA microspheres move into phagosome-lysosomes by the fusion of phagosomes with lysosomes. The absolute values of the electrophoretic mobility of PLGA microspheres increased by the adsorption of pulmonary surfactants on the surfaces of PLGA microspheres. By analyzing the experimental data using the soft-particle theory, it was indicated that the microspheres became 'softer' and the surface charge density of microspheres increases by the degradation. On the other hand, the surface of PLGA microspheres became harder and the electric charge density increased by the adsorption of pulmonary surfactant on the surfaces of PLGA microspheres. The changes in the surface charge density with degradation became larger by the adsorption of the lung surfactant on PLGA microsphere surfaces. It is considered that the changes in surface properties of PLGA microspheres affect their uptake efficiency by alveolar macrophage.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Ando T, Ishiguro H, Kimura M, Mitsui A, Kurehara H, Sugito N, Tomoda K, Mori R, Takashima N, Ogawa R, Fujii Y, Kuwabara Y. Decreased expression of NDRG1 is correlated with tumor progression and poor prognosis in patients with esophageal squamous cell carcinoma. Dis Esophagus 2006; 19:454-8. [PMID: 17069588 DOI: 10.1111/j.1442-2050.2006.00618.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
NDRG1 (N-myc downstream regulated gene-1) was reported to be necessary for p53-mediated apoptosis and to be regulated by PTEN (phosphatase and tensin homolog). In several cancers, it was suggested to be a tumor suppressor gene. Its significance in esophageal squamous cell carcinoma (ESCC) has not been studied. The objective of this study was to clarify the relation between clinicopathological and biologic factors in esophageal carcinoma and to determine the prognostic significance of the expression of NDRG1. Expression of NDRG1 mRNA was quantified by real-time reverse transcription polymerase chain reaction using a Lightcycler in 47 esophageal ESCC specimens. The data were analyzed with reference to clinicopathological factors. Among the esophageal cancer tissues, NDRG1 mRNA expression was significantly lower in tumors of more advanced pathological stage (0-I vs. II-IV; P = 0.0027) and local tumor invasion (T1-2 vs. T3-4; P = 0.0136). Patients who had low NDRG1 mRNA expression had a significantly shorter survival after surgery compared with patients who had high NDRG1 mRNA expression (log-rank test, P = 0.0478). Impaired NDRG1 expression may lead to more aggressive invasion of ESCC.
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Affiliation(s)
- T Ando
- Department of Surgery II, Nagoya City University Medical School, Nagoya, Japan
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Yoshida A, Matumoto M, Hshizume H, Oba Y, Tomishige T, Inagawa H, Kohchi C, Hino M, Ito F, Tomoda K, Nakajima T, Makino K, Terada H, Hori H, Soma GI. Selective delivery of rifampicin incorporated into poly(dl-lactic-co-glycolic) acid microspheres after phagocytotic uptake by alveolar macrophages, and the killing effect against intracellular Mycobacterium bovis Calmette–Guérin. Microbes Infect 2006; 8:2484-91. [PMID: 16879999 DOI: 10.1016/j.micinf.2006.06.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2005] [Revised: 05/31/2006] [Accepted: 06/22/2006] [Indexed: 11/21/2022]
Abstract
Macrophages and their phagocytotic abilities play a dominant role for defense against infected organisms. However, Mycobacterium tuberculosis can survive in the phagosomes of macrophages. In this study, the effective delivery of a drug and the killing effect of tubercle bacilli within macrophages were investigated utilizing the phagocytotic uptake of rifampicin (RFP) that had been incorporated into poly(DL-lactic-co-glycolic) acid (PLGA) microspheres. The microspheres were composed of PLGA that had a monomer ratio (lactic acid/glycolic acid) of either 50/50 or 75/25. They had molecular weights from 5000 to 20,000, and diameters of 1.5, 3.5, 6.2 and 8.9 microm. The most significant factor for phagocytotic activity of macrophages was the diameter of the microspheres. By contrast, molecular weight and monomer ratio of PLGA did not influence phagocytosis. The amount of RFP delivered into cells was also investigated. RFP-PLGA microspheres composed of PLGA with a molecular weight of 20,000 and monomer ratio of 75/25 showed the highest amount of delivery (4 microg/1 x 10(6) cells). Fourteen days after infection, the survival rate of treated intracellular bacilli was 1% when compared with untreated cells. There was almost no killing effect of free RFP (4 or 15 microg/ml) on intracellular bacilli. In vivo efficacy of RFP-PLGA was also examined in rats infected with M. tuberculosis Kurono. Intratracheal administration of RFP-PLGA microspheres was shown to be superior to free RFP for killing of intracellular bacilli and preventing granuloma formation in some lobes. These results suggest that phagocytotic activity could be part of a new drug delivery system that selectively targeted macrophages.
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Affiliation(s)
- Aya Yoshida
- Faculty of Engineering, The University of Tokushima,Tokushima-shi, Tokushima 770-8506, Japan
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Nakamura T, Higashi S, Tomoda K, Tsukano M, Baba S, Shono M. Significance of SAA1.3 allele genotype in Japanese patients with amyloidosis secondary to rheumatoid arthritis. Rheumatology (Oxford) 2005; 45:43-9. [PMID: 16219644 DOI: 10.1093/rheumatology/kei112] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [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: 11/14/2022] Open
Abstract
OBJECTIVE To clarify the clinical significance of the SAA1.3 allele in the development and outcome of AA amyloidosis in Japanese patients with rheumatoid arthritis (RA). METHODS One hundred and twenty RA patients (60 alive and 60 dead) fulfilling the 1987 ACR criteria and 62 RA patients with biopsy-confirmed amyloid A (AA) amyloidosis (36 alive and 26 dead) were enrolled. The SAA1 genotypes were determined by PCR-based restriction fragment length polymorphism. To predict the clinical outcome of AA amyloidosis, we investigated characteristics and survival, focusing on the SAA1.3 allele retrospectively. RESULTS The SAA1.3 allele genotype was not only a risk factor for the association of AA amyloidosis but also a poor prognostic factor for the development of AA amyloidosis (P=0.015). Both the association of AA amyloidosis arising early in the RA disease course and symptomatic variety and severity were found in amyloidotic patients with the SAA1.3 allele. The presenting factors adversely influenced were age (P=0.001), lowered serum albumin (P=0.001) and creatinine concentration (P=2.14 x 10(-5)). Renal involvement was associated with poor survival in patients with AA amyloidosis (P=0.011) and the presence of cardiac involvement was likely to be a risk factor for survival (P=0.062). The rate of the causes of death in respect to the category of infection, gastrointestinal diseases, and renal failure was higher in patients with AA amyloidosis than in those without amyloidosis, gastrointestinal diseases and renal failure. Cyclophosphamide was found to be superior to methotrexate in the management of RA patients with AA amyloidosis. CONCLUSION Our data support the fact that homozygosity for the SAA1.3 allele is a univariate predictor of survival in addition to a risk factor for the association of AA amyloidosis adversely influencing the outcome in Japanese RA patients. Renal involvement is a pivotal clinical manifestation in the development of AA amyloidosis, as is likely to be cardiac involvement in AA amyloidosis secondary to RA.
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Affiliation(s)
- T Nakamura
- Section of Internal Medicine and Rheumatology, Kumamoto Center for Arthritis and Rheumatology, 1-15-7 Kuhonji, Kumamoto 862-0976, Japan.
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Tomoda K, Kojima S, Kajimoto M, Watanabe D, Nakajima T, Makino K. Effects of pulmonary surfactant system on rifampicin release from rifampicin-loaded PLGA microspheres. Colloids Surf B Biointerfaces 2005; 45:1-6. [PMID: 16099143 DOI: 10.1016/j.colsurfb.2005.06.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Accepted: 06/25/2005] [Indexed: 11/30/2022]
Abstract
Pulmonary surfactants little affected the release ratio of rifampicin from rifampicin-loaded poly(lactide-co-glycolide) PLGA microspheres. The release ratio of rifampicin was depending on pH of pulmonary surfactant solution, showing that rifampicin-loaded PLGA microspheres have an ideal property to deliver rifampicin into alveolar macrophages inside of which Mycobacterium tuberculosis bacilli reside and to kill them. That is, little amount of rifampicin is released in alveolar lining liquid before the microspheres are phagocytosed by alveolar macrophages, then rifampicin is released in phagosome or cytoplasm, but little amount of rifampicin is released in lysosome of alveolar macrophages after the microspheres are internalized. Pulmonary surfactants also little affected the changes in molecular weight of residual PLGA during its hydrolytic degradation process. From the electrophoretic mobility measurements of PLGA microspheres, it was shown that pulmonary surfactants changed the surface charge density of PLGA microspheres by adsorbing on their surfaces.
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Affiliation(s)
- Keishiro Tomoda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki Noda Chiba 278-8510, Japan
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Nakamura T, Yamamura Y, Tomoda K, Tsukano M, Baba S. Massive hematuria due to bladder amyloidosis in patients with rheumatoid arthritis: three case reports. Clin Exp Rheumatol 2003; 21:673-4. [PMID: 14611124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
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Abstract
Mycobacterium kansasii, an atypical Mycobacterium, may cause serious illness in humans. We describe a M. kansasii infection of the foot joint, which was diagnosed in a 46-year-old woman with systemic lupus erythematosus. The diagnosis was based on a positive culture from degenerative tissue and histological diagnosis of a synovium. We reviewed the literature regarding M. kansasii infection of the joint, bone, and periarticular structures focusing on the complication of rheumatic diseases.
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Affiliation(s)
- T Nakamura
- Kumamoto Center for Arthritis and Rheumatology and the Kumamoto Orthopaedic Hospital
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Iwai H, Lee S, Inaba M, Sugiura K, Tomoda K, Yamashita T, Ikehara S. Prevention of accelerated presbycusis by bone marrow transplantation in senescence-accelerated mice. Bone Marrow Transplant 2001; 28:323-8. [PMID: 11571502 DOI: 10.1038/sj.bmt.1703152] [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] [Received: 02/05/2001] [Accepted: 06/19/2001] [Indexed: 11/09/2022]
Abstract
A substrain of the senescence-accelerated mouse (SAM), the SAMP1 mouse, is an animal model for accelerated senescence including the age-related acceleration of both immunological dysfunction and hearing loss caused by the impairment of spiral ganglion cells. In the present study, we examine whether the accelerated presbycusis can be prevented by allogeneic BMT. Young SAMP1 (H-2(k)) mice were irradiated with 9 Gy and then reconstituted with bone marrow cells from normal BALB/c (H-2(d)) mice. Allogeneic BMT was found to prevent the development of immunological dysfunction, hearing loss, and apoptosis of spinal ganglion cells in SAMP1 mice. These findings indicate that some types of accelerated presbycusis do not result from defects in the cochlea, but do from defects in the hematopoietic stem cells (HSC) and immunocompetent cells derived from the HSC. If this is the case, either allogeneic BMT, which replaces abnormal HSC with normal HSC and reconstructs a normal immune system in the recipients, or autologous BMT using genetically modified bone marrow cells, could become a new strategy for the treatment of presbycusis.
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Affiliation(s)
- H Iwai
- Department of Otorhinolaryngology, Kansai Medical University, Moriguchi, Osaka, Japan
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