論文 - 三好 大輔
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Significant structural change in human c-Myc promoter G-quadruplex 査読あり 国際共著
Nikita Kundu, Taniya Sharma, Sarvpreet Kaur, Mamta Singh, Vinit Kumar, Uttam Sharma, Aklank Jain, Jadala Shankaraswamy, Daisuke Miyoshi, Sarika Saxena
RSC Adv. 12 7594 - 7604 2022年4月
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Intramolecular G-quadruplex-hairpin loop structure competition of a GC-rich exon region in the TMPRSS2 gene 査読あり
Wataru Sugimoto, Natsuki Kinoshita, Minori Nakata, Tatsuya Ohyama, Hisae Minatojima-Minaminachi, Takahito Nishikata, Naoki Sugimoto, Daisuke Miyoshi, Keiko Kawauchi
Chem. Commun. 58 48 - 51 2022年1月
担当区分：責任著者
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Wataru Sugimoto, Natsuki Kinoshita, Minori Nakata, Tatsuya Ohyama, Hisae Tateishi-Karimata, Takahito Nishikata, Naoki Sugimoto, Daisuke Miyoshi, Keiko Kawauchi
Chemical Communications 58 ( 1 ) 48 - 51 2022年
出版者・発行元：Royal Society of Chemistry (RSC)
We identified cytosine-rich regions adjacent to guanine-rich regions in the TMPRSS2 gene, which showed structural competition between a G-quadruplex and a hairpin loop. Furthermore, this competition significantly affected transcription efficiency.
DOI： 10.1039/d1cc05523b
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核酸の四重らせん構造を狙った治療薬の展望 招待あり
木下菜月、取井猛流、川内敬子、三好大輔
37 ( 4 ) 52 - 55 2022年
担当区分：責任著者
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rDNAおよびrRNAが形成する四重らせん構造による核小体機能の制御 招待あり
川内敬子、取井猛流、月生雅也、木下菜月、三好大輔
月刊細胞 54 ( 12 ) 36 - 39 2022年
担当区分：責任著者
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Detection of Intracellular Reactive Oxidative Species Using the Fluorescent Probe Hydroxyphenyl Fluorescein 招待あり 査読あり
Wataru Sugimoto, Daisuke Miyoshi, Keiko Kawauchi
Methods in Molecular Biology 2274 207 - 215 2021年5月
出版者・発行元：Humana Press Inc.
Various fluorescent probes for the detection of intracellular reactive oxidative species (ROS) have been developed because ROS levels are closely associated with cellular states. Here, we describe a method for detection of intracellular ROS in living cells using the fluorescent probe, hydroxyphenyl fluorescein (HPF), which detects hydroxyl radicals and peroxynitrite. NIH3T3 cells and p53 knockout (p53−/−) mouse embryonic fibroblasts (MEFs) were transformed by expressing oncogenic RAS using a retrovirus system. The cells were treated with HPF at 37 °C for 30 min, and subsequently, images were acquired using a confocal fluorescence microscope at an excitation wavelength of 488 nm after washing with PBS.
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がん関連RNAを破壊する分子標的型光線力学療法 招待あり 査読あり
杉本 渉・橋本 佳樹・川内 敬子・三好 大輔
BIO Clinica 36 ( 5 ) 65 - 67 2021年5月
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核小体ストレスにより形成するrDNA G-quadruplex集合体とその機能
杉本 渉, 桑本 慎, 建石 寿枝, 岩根 敦子, 高橋 宏隆, 三好 大輔, 川内 敬子
日本薬学会年会要旨集 141年会 29V05 - am10S 2021年3月
出版者・発行元：(公社)日本薬学会
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Combined Effects of Methylated Cytosine and Molecular Crowding on the Thermodynamic Stability of DNA Duplexes 招待あり 査読あり
Combined Effects of Methylated Cytosine and Molecular Crowding on the Thermodynamic Stability of DNA Duplexes
Int. J. Mol. Sci. 22 ( 2 ) 947 2021年1月
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Photosensitizers Based on G-Quadruplex Ligand for Cancer Photodynamic Therapy 招待あり 国際誌
Keiko Kawauchi, Ryoto Urano, Natsuki Kinoshita, Shin Kuwamoto, Takeru Torii, Yoshiki Hashimoto, Shinya Taniguchi, Mitsuki Tsuruta, Daisuke Miyoshi
Genes 11 ( 11 ) 1340 2020年11月
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TakahiroYamauchi, Takafumi Kubodera, Daisuke Miyoshi, Naoki Sugimoto, Shuji Hirohata
Journal of Bioscience and Bioengineering 2020年10月
共著
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杉本 渉, 川内 敬子, 三好 大輔
Medical Science Digest 46 ( 9 ) 26 - 27 2020年7月
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Takeru Torii, Wataru Sugimoto, Keiko Kawauchi, Daisuke Miyoshi
Journal of Data Mining in Genomics & Proteomics 2020年6月
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Kazuki Kohata, Daisuke Miyoshi
Biophys. Rev. 12 669 - 676 2020年5月
共著
Living cells are highly crowded with large and small biomolecules. The total concentration of biomolecules can reach 400 mg/ml, and 40% of the cell volume is occupied by biomolecules. Droplet formation in cells via liquid-liquid phase separation may play a role in controlling biochemical reactions in this complex molecular environment. Liquid-liquid phase separation generally involves nucleic acids and proteins as anionic and cationic components, respectively. Significant characteristics of droplets, which make them different from protein aggregation or fibril formation, are reversibility of formation and responsiveness to the molecular environment. In this review, we quantitatively describe the molecular environment inside cells and droplets that participate in controlling central dogma reactions. Finally, we discuss the importance of droplets under conditions of molecular crowding within living cells.
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Hydroxyl groups in cosolutes regulate the G-quadruplex topology of telomeric DNA 査読あり
H. Tateishi-Karimata, D. Banerjee, T. Ohyama, S. Matsumoto, D. Miyoshi, S. Nakano, and N. Sugimoto
Biochemical and Biophysical Research Communications 525 ( 1 ) 177 - 183 2020年4月
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Hydroxyl groups in cosolutes regulate the G-quadruplex topology of telomeric DNA. 査読あり 国際誌
Hisae Tateishi-Karimata, Dipanwita Banerjee, Tatsuya Ohyama, Saki Matsumoto, Daisuke Miyoshi, Shu-Ich Nakano, Naoki Sugimoto
Biochemical and biophysical research communications 2020年2月
Telomeric G-quadruplex topology has the ability to regulate telomerase activity, which counteracts the shortening of telomere with successive cell divisions, thereby causing genomic longevity. However, the detailed mechanism of G-quadruplexes topologies formed by telomeric sequences requires further investigation. In this study, we quantitatively investigated the effect of cosolutes, particularly the varying number of hydroxyl groups, on the structural transition between hybrid type and parallel G-quadruplexes formed by telomeric DNA sequences. Cosolutes with one or no hydroxyl groups in the vicinal position more efficiently induced the transition to parallel G-quadruplex from hybrid G-quadruplex than those with more hydroxyl groups. We also examined the effect of cosolute structures on the hydration of G-quadruplex formation; the results indicated that cosolutes with fewer hydroxyl groups lead to the release of greater amount of water during G-quadruplex formation. Molecular dynamics results showed that the parallel G-quadruplex was more dehydrated than the hybrid type G-quadruplex. Generally, a dehydrated structure is favored under crowding condition. Thus, depending on the surrounding cosolutes, the G-quadruplex topology can be controlled by the G-quadruplex hydration state.
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Shikhar Tyagi, Sarika Saxena, Nikita Kundu, Taniya Sharma, Amlan Chakraborty, Sarvpreet Kaur, Daisuke Miyoshi, Jadala Shankaraswamy
RSC Advances 9 40255 - 40262 2019年12月
共著
We described a novel synthetic peptide in which a glutamine residue binds through hydrogen bonding to a guanine-base and a trytophan residue intercalates with K+ resulting in stabilization of a human telomeric G-quadruplex with high selectivity over its complementary c-rich strand and a double-stranded DNA and its complementary C-rich strand. This peptide offers great potential for cancer treatment by inhibiting the telomere extension by telomerase.
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The RAS mRNA G-quadruplex: making undruggable cancer targets druggable
Keiko Kawauchi, Wataru Sugimoto, Daisuke Miyoshi
The Atlas of Science 2019年10月
共著
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細胞の分子夾雑環境における核酸構造と核酸構造リガンドの挙動 ～細胞内でも望みの機能を発現する分子の合理設計に向けて～
三好大輔
生命化学研究レター 58 ( 1 ) 17 - 21 2019年4月
単著