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Oikawa D, Fukui K, Aoki Y, Waki T, Takahashi S, Shimoyama T, Nakayama T. Enterocloster alcoholdehydrogenati sp. nov., a Novel Bacterial Species Isolated from the Feces of a Patient with Alcoholism. Curr Microbiol 2023; 80:187. [PMID: 37074467 PMCID: PMC10115706 DOI: 10.1007/s00284-023-03285-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/23/2023] [Indexed: 04/20/2023]
Abstract
Strain C5-48T, an anaerobic intestinal bacterium that potentially accumulates acetaldehyde at levels exceeding its minimum mutagenic concentration (50 µM) in the colon and rectum, was isolated from the feces of a patient with alcoholism. The 16S rRNA gene sequence of strain C5-48T showed high similarity to the corresponding sequences of Lachnoclostridium edouardi Marseille-P3397T (95.7%) and Clostridium fessum SNUG30386T (94.7%). However, phylogenetic analysis using the sequences of the 16S rRNA, rpoB, and hsp60 genes and whole-genome analysis strongly suggested that C5-48T should be included in the genus Enterocloster. The novelty of strain C5-48T was further confirmed by comprehensive average nucleotide identity (ANI) calculations based on its whole-genome sequence, which showed appreciable ANI values with known Enterocloster species (e.g., 74.3% and 73.4% with Enterocloster bolteae WAL 16351T and Enterocloster clostridioformis ATCC 25537T, respectively). The temperature range for growth of strain C5-48T was 15-37 °C with an optimum of 37 °C. The pH range for growth was 5.5-10.5 with an optimum of 7.5. The major constituents of the cell membrane lipids of strain C5-48T were 16:0, 14:0, and 18:1 ω7c dimethyl acetal fatty acids. On the basis of the genotypic and phenotypic properties, Enterocloster alcoholdehydrogenati sp. nov. is proposed, with the type strain C5-48T (= JCM 33305T = DSM 109474T).
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Affiliation(s)
- Daiki Oikawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Kohei Fukui
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
| | - Yuichi Aoki
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Seiryo 2-1, Sendai, Miyagi, 980-8573, Japan
- Graduate School of Information Sciences, Tohoku University, Aoba 6-3-09, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8679, Japan
| | - Toshiyuki Waki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
| | - Seiji Takahashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan
| | - Takefumi Shimoyama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan.
| | - Toru Nakayama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-Ku, Sendai, Miyagi, 980-8579, Japan.
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Ohira H, Oikawa D, Kurokawa Y, Aoki Y, Omura A, Kiyomoto K, Nakagawa W, Mamoto R, Fujioka Y, Nakayama T. Suppression of colonic oxidative stress caused by chronic ethanol administration and attenuation of ethanol-induced colitis and gut leakiness by oral administration of sesaminol in mice. Food Funct 2022; 13:9285-9298. [PMID: 35968694 DOI: 10.1039/d1fo04120g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chronic consumption of excess ethanol is one of the major risk factors for colorectal cancer (CRC), and the pathogenesis of ethanol-related CRC (ER-CRC) involves ethanol-induced oxidative-stress and inflammation in the colon and rectum, as well as gut leakiness. In this study, we hypothesised that oral administration of sesaminol, a sesame lignan, lowers the risk of ER-CRC because we found that it is a strong antioxidant with very low prooxidant activity. This hypothesis was examined using a mouse model, in which 2.0% v/v ethanol was administered ad libitum for 2 weeks with or without oral gavage with sesaminol (2.5 mg per day). Oral sesaminol administration suppressed the ethanol-induced colonic lesions and the ethanol-induced elevation of the colonic levels of oxidative stress markers (8-hydroxy-2'-deoxyguanosine, malondialdehyde, and 4-hydroxyalkenals). It consistently suppressed the chronic ethanol-induced expressions of cytochrome P450-2E1 and inducible nitric oxide synthase and upregulated heme oxygenase-1 expression, probably via the nuclear factor erythroid-derived 2-like 2 pathway in the mouse colon. Oral sesaminol administration also suppressed the chronic ethanol-induced elevation of colonic inflammation marker levels, such as those of tumour necrosis factor-α, interleukin-6, and monocyte chemoattractant protein-1, probably via the nuclear factor-kappa B pathway. Moreover, it prevented the chronic ethanol-induced gut leakiness by restoring tight junction proteins, giving rise to lower plasma endotoxin levels compared with those of ethanol-administered mice. All of these results suggest that dietary supplementation of sesaminol may lower the risk of ER-CRC by suppressing each of the above-mentioned steps in ER-CRC pathogenesis.
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Affiliation(s)
- Hideo Ohira
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe 651-2180, Japan
| | - Daiki Oikawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan
| | - Yoichi Kurokawa
- Faculty of Bioscience, Fukui Prefectural University, Fukui 910-1195, Japan
| | - Yuichi Aoki
- Tohoku University Tohoku Medical Megabank Organization, Seiryo 2-1, Sendai, Miyagi 980-8573, Japan
| | - Ayano Omura
- Kiyomoto Co., Ltd., 6-1633 Totoro-cho, Nobeoka, Miyazaki 889-0595, Japan
| | - Kunio Kiyomoto
- Kiyomoto Co., Ltd., 6-1633 Totoro-cho, Nobeoka, Miyazaki 889-0595, Japan
| | - Wao Nakagawa
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe 651-2180, Japan
| | - Rie Mamoto
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe 651-2180, Japan
| | - Yoshio Fujioka
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe 651-2180, Japan
| | - Toru Nakayama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan
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Oikawa D, Yamashita S, Takahashi S, Waki T, Kikuchi K, Abe T, Katayama T, Nakayama T. (+)-Sesamin, a sesame lignan, is a potent inhibitor of gut bacterial tryptophan indole-lyase that is a key enzyme in chronic kidney disease pathogenesis. Biochem Biophys Res Commun 2022; 590:158-162. [PMID: 34974305 DOI: 10.1016/j.bbrc.2021.12.088] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/23/2021] [Indexed: 01/04/2023]
Abstract
The progression of chronic kidney disease (CKD) increases the risks of cardiovascular morbidity and end-stage kidney disease. Indoxyl sulfate (IS), which is derived from dietary l-tryptophan by the action of bacterial l-tryptophan indole-lyase (TIL) in the gut, serves as a uremic toxin that exacerbates CKD-related kidney disorder. A mouse model previously showed that inhibition of TIL by 2-aza-l-tyrosine effectively reduced the plasma IS level, causing the recovery of renal damage. In this study, we found that (+)-sesamin and related lignans, which occur abundantly in sesame seeds, inhibit intestinal bacteria TILs. Kinetic studies revealed that (+)-sesamin and sesamol competitively inhibited Escherichia coli TIL (EcTIL) with Ki values of 7 μM and 14 μM, respectively. These Ki values were smaller than that of 2-aza-l-tyrosine (143 μM). Molecular docking simulation of (+)-sesamin- (or sesamol-)binding to EcTIL predicted that these inhibitors potentially bind near the active site of EcTIL, where the cofactor pyridoxal 5'-phosphate is bound, consistent with the kinetic results. (+)-Sesamin is a phytochemical with a long history of consumption and is generally regarded as safe. Hence, dietary supplementation of (+)-sesamin encapsulated in enteric capsules could be a promising mechanism-based strategy to prevent CKD progression. Moreover, the present findings would provide a new structural basis for designing more potent TIL inhibitors for the development of mechanism-based therapeutic drugs to treat CKD.
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Affiliation(s)
- Daiki Oikawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Satoshi Yamashita
- Department of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Japan
| | - Seiji Takahashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Toshiyuki Waki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Koichi Kikuchi
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai, 980-8574, Japan; Department of Medical Megabank Tohoku University, Sendai, 980-8574, Japan
| | - Takaaki Abe
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai, 980-8574, Japan; Department of Medical Science, Tohoku University Graduate School of Biomedical Engineering, Sendai, 980-8574, Japan; Department of Clinical Biology and Hormonal Regulation, Tohoku University Graduate School of Medicine, Sendai, 980-8574, Japan
| | - Takane Katayama
- Graduate School of Biostudies, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Toru Nakayama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan.
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Ho H, Kikuchi K, Oikawa D, Watanabe S, Kanemitsu Y, Saigusa D, Kujirai R, Ikeda‐Ohtsubo W, Ichijo M, Akiyama Y, Aoki Y, Mishima E, Ogata Y, Oikawa Y, Matsuhashi T, Toyohara T, Suzuki C, Suzuki T, Mano N, Kagawa Y, Owada Y, Katayama T, Nakayama T, Tomioka Y, Abe T. SGLT-1-specific inhibition ameliorates renal failure and alters the gut microbial community in mice with adenine-induced renal failure. Physiol Rep 2021; 9:e15092. [PMID: 34921520 PMCID: PMC8683788 DOI: 10.14814/phy2.15092] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 09/20/2021] [Accepted: 10/13/2021] [Indexed: 12/25/2022] Open
Abstract
Sodium-dependent glucose cotransporters (SGLTs) have attracted considerable attention as new targets for type 2 diabetes mellitus. In the kidney, SGLT2 is the major glucose uptake transporter in the proximal tubules, and inhibition of SGLT2 in the proximal tubules shows renoprotective effects. On the other hand, SGLT1 plays a role in glucose absorption from the gastrointestinal tract, and the relationship between SGLT1 inhibition in the gut and renal function remains unclear. Here, we examined the effect of SGL5213, a novel and potent intestinal SGLT1 inhibitor, in a renal failure (RF) model. SGL5213 improved renal function and reduced gut-derived uremic toxins (phenyl sulfate and trimethylamine-N-oxide) in an adenine-induced RF model. Histological analysis revealed that SGL5213 ameliorated renal fibrosis and inflammation. SGL5213 also reduced gut inflammation and fibrosis in the ileum, which is a primary target of SGL5213. Examination of the gut microbiota community revealed that the Firmicutes/Bacteroidetes ratio, which suggests gut dysbiosis, was increased in RF and SGL5213 rebalanced the ratio by increasing Bacteroidetes and reducing Firmicutes. At the genus level, Allobaculum (a major component of Erysipelotrichaceae) was significantly increased in the RF group, and this increase was canceled by SGL5213. We also measured the effect of SGL5213 on bacterial phenol-producing enzymes that catalyze tyrosine into phenol, following the reduction of phenyl sulfate, which is a novel marker and a therapeutic target for diabetic kidney disease DKD. We found that the enzyme inhibition was less potent, suggesting that the change in the microbial community and the reduction of uremic toxins may be related to the renoprotective effect of SGL5213. Because SGL5213 is a low-absorbable SGLT1 inhibitor, these data suggest that the gastrointestinal inhibition of SGLT1 is also a target for chronic kidney diseases.
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Affiliation(s)
- Hsin‐Jung Ho
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Koichi Kikuchi
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Medical MegabankTohoku UniversitySendaiJapan
| | - Daiki Oikawa
- Department of Biomolecular Engineering Applied Life ChemistryTohoku University Graduate School of EngineeringSendaiJapan
| | - Shun Watanabe
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
| | | | - Daisuke Saigusa
- Department of Integrative Genomics, Tohoku Medical Megabank OrganizationTohoku UniversitySendaiJapan
| | - Ryota Kujirai
- Laboratory of OncologyPharmacy Practice and SciencesTohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
| | - Wakako Ikeda‐Ohtsubo
- Laboratory of Animal Products ChemistryGraduate School of Agricultural ScienceTohoku UniversitySendaiJapan
| | - Mariko Ichijo
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yukako Akiyama
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yuichi Aoki
- Department of Integrative Genomics, Tohoku Medical Megabank OrganizationTohoku UniversitySendaiJapan
| | - Eikan Mishima
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Yoshiaki Ogata
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
| | - Yoshitsugu Oikawa
- Department of PediatricsTohoku University Graduate School of MedicineSendaiJapan
| | - Tetsuro Matsuhashi
- Department of PediatricsTohoku University Graduate School of MedicineSendaiJapan
| | - Takafumi Toyohara
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Chitose Suzuki
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Takehiro Suzuki
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
| | - Nariyasu Mano
- Department of Pharmaceutical SciencesTohoku University HospitalSendaiJapan
| | - Yoshiteru Kagawa
- Department of Organ AnatomyTohoku University Graduate School of MedicineSendaiJapan
| | - Yuji Owada
- Department of Organ AnatomyTohoku University Graduate School of MedicineSendaiJapan
| | - Takane Katayama
- Laboratory of Molecular Biology of BioresponseGraduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Toru Nakayama
- Department of Biomolecular Engineering Applied Life ChemistryTohoku University Graduate School of EngineeringSendaiJapan
| | - Yoshihisa Tomioka
- Laboratory of Molecular Biology of BioresponseGraduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Takaaki Abe
- Department of Medical ScienceTohoku University Graduate School of Biomedical EngineeringSendaiJapan
- Division of Nephrology, Endocrinology and Vascular MedicineTohoku University Graduate School of MedicineSendaiJapan
- Department of Clinical Biology and Hormonal RegulationTohoku University Graduate School of MedicineSendaiJapan
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Ohira H, Tsuruya A, Oikawa D, Nakagawa W, Mamoto R, Hattori M, Waki T, Takahashi S, Fujioka Y, Nakayama T. Alteration of oxidative-stress and related marker levels in mouse colonic tissues and fecal microbiota structures with chronic ethanol administration: Implications for the pathogenesis of ethanol-related colorectal cancer. PLoS One 2021; 16:e0246580. [PMID: 33577585 PMCID: PMC7880462 DOI: 10.1371/journal.pone.0246580] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 01/22/2021] [Indexed: 11/19/2022] Open
Abstract
Chronic ethanol consumption is a risk factor for colorectal cancer, and ethanol-induced reactive oxygen species have been suggested to play important roles in the pathogenesis of ethanol-related colorectal cancer (ER-CRC). In this study, the effects of 10-week chronic administration of ethanol on the colonic levels of oxidative stress and advance glycation end product (AGE) levels, as well as fecal microbiota structures, were examined in a mouse model. Chronic oral administration of ethanol in mice (1.0 mL of 1.5% or 5.0% ethanol (v/v) per day per mouse, up to 10 weeks) resulted in the elevation of colonic levels of oxidative stress markers (such as 8-hydroxy-2'-deoxyguanosine and 4-hydroxynonenal) compared to control mice, and this was consistently accompanied by elevated levels of inflammation-associated cytokines and immune cells (Th17 and macrophages) and a decreased level of regulatory T (Treg) cells to produce colonic lesions. It also resulted in an alteration of mouse fecal microbiota structures, reminiscent of the alterations observed in human inflammatory bowel disease, and this appeared to be consistent with the proposed sustained generation of oxidative stress in the colonic environment during chronic ethanol consumption. Moreover, the first experimental evidence that chronic ethanol administration results in elevated levels of advanced glycation end products (AGEs) and their receptors (RAGE) in the colonic tissues in mice is also shown, implying enhanced RAGE-mediated signaling with chronic ethanol administration. The RAGE-mediated signaling pathway has thus far been implicated as a link between the accumulation of AGEs and the development of many types of chronic colitis and cancers. Thus, enhancement of this pathway likely exacerbates the ethanol-induced inflammatory states of colonic tissues and might at least partly contribute to the pathogenesis of ER-CRC.
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Affiliation(s)
- Hideo Ohira
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Atsuki Tsuruya
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Daiki Oikawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Wao Nakagawa
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Rie Mamoto
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Masahira Hattori
- Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Toshiyuki Waki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Seiji Takahashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yoshio Fujioka
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Toru Nakayama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
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Ono E, Waki T, Oikawa D, Murata J, Shiraishi A, Toyonaga H, Kato M, Ogata N, Takahashi S, Yamaguchi MA, Horikawa M, Nakayama T. Glycoside-specific glycosyltransferases catalyze regio-selective sequential glucosylations for a sesame lignan, sesaminol triglucoside. Plant J 2020; 101:1221-1233. [PMID: 31654577 DOI: 10.1111/tpj.14586] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/07/2019] [Accepted: 10/16/2019] [Indexed: 05/10/2023]
Abstract
Sesame (Sesamum indicum) seeds contain a large number of lignans, phenylpropanoid-related plant specialized metabolites. (+)-Sesamin and (+)-sesamolin are major hydrophobic lignans, whereas (+)-sesaminol primarily accumulates as a water-soluble sesaminol triglucoside (STG) with a sugar chain branched via β1→2 and β1→6-O-glucosidic linkages [i.e. (+)-sesaminol 2-O-β-d-glucosyl-(1→2)-O-β-d-glucoside-(1→6)-O-β-d-glucoside]. We previously reported that the 2-O-glucosylation of (+)-sesaminol aglycon and β1→6-O-glucosylation of (+)-sesaminol 2-O-β-d-glucoside (SMG) are mediated by UDP-sugar-dependent glucosyltransferases (UGT), UGT71A9 and UGT94D1, respectively. Here we identified a distinct UGT, UGT94AG1, that specifically catalyzes the β1→2-O-glucosylation of SMG and (+)-sesaminol 2-O-β-d-glucosyl-(1→6)-O-β-d-glucoside [termed SDG(β1→6)]. UGT94AG1 was phylogenetically related to glycoside-specific glycosyltransferases (GGTs) and co-ordinately expressed with UGT71A9 and UGT94D1 in the seeds. The role of UGT94AG1 in STG biosynthesis was further confirmed by identification of a STG-deficient sesame mutant that predominantly accumulates SDG(β1→6) due to a destructive insertion in the coding sequence of UGT94AG1. We also identified UGT94AA2 as an alternative UGT potentially involved in sugar-sugar β1→6-O-glucosylation, in addition to UGT94D1, during STG biosynthesis. Yeast two-hybrid assays showed that UGT71A9, UGT94AG1, and UGT94AA2 were found to interact with a membrane-associated P450 enzyme, CYP81Q1 (piperitol/sesamin synthase), suggesting that these UGTs are components of a membrane-bound metabolon for STG biosynthesis. A comparison of kinetic parameters of these UGTs further suggested that the main β-O-glucosylation sequence of STG biosynthesis is β1→2-O-glucosylation of SMG by UGT94AG1 followed by UGT94AA2-mediated β1→6-O-glucosylation. These findings together establish the complete biosynthetic pathway of STG and shed light on the evolvability of regio-selectivity of sequential glucosylations catalyzed by GGTs.
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Affiliation(s)
- Eiichiro Ono
- Suntory Global Innovation Center (SIC) Ltd., Research Institute, Soraku-gun, Kyoto, 619-0284, Japan
| | - Toshiyuki Waki
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Daiki Oikawa
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Jun Murata
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Akira Shiraishi
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Hiromi Toyonaga
- Suntory Global Innovation Center (SIC) Ltd., Research Institute, Soraku-gun, Kyoto, 619-0284, Japan
| | - Masako Kato
- National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8517, Japan
| | - Naoki Ogata
- National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8517, Japan
| | - Seiji Takahashi
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | | | - Manabu Horikawa
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Toru Nakayama
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
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Komakura K, Oikawa D, Terawaki S, Sakamoto S, Mizukami Y, Sugawara K, Tsuruta D, Tokunaga F. 459 HOIPIN-1, a novel LUBAC inhibitor, suppresses the imiquimod-induced psoriasis-like skin inflammation in mice. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.535] [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: 10/27/2022]
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Sakurai A, Hongo S, Nair A, Waki T, Oikawa D, Nishio T, Shimoyama T, Takahashi S, Yamashita S, Nakayama T. Identification and characterization of a novel bacterial β-glucosidase that is highly specific for the β-1,2-glucosidic linkage of sesaminol triglucoside. Biosci Biotechnol Biochem 2018; 82:1518-1521. [PMID: 29804519 DOI: 10.1080/09168451.2018.1476123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
A gene (PSTG2) coding for a novel β-glucosidase belonging to glycoside hydrolase family 3 was identified in the vicinity of the previously identified β-glucosidase gene [sesaminol triglucoside (STG)-hydrolyzing β-glucosidase, PSTG1] in the genome of Paenibacillus sp. strain KB0549. Compared with PSTG1, recombinant PSTG2 more specifically acted on the β-1,2-glucosidic linkage of the STG molecule to transiently accumulate a larger amount of 6-O-(β-D-glucopyranosyl)-β-D-glucopyranosylsesaminol.
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Affiliation(s)
- Akinori Sakurai
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
| | - Shuntaro Hongo
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
| | - Arun Nair
- b Kiyomoto Co. Ltd , Nobeoka , Japan
| | - Toshiyuki Waki
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
| | - Daiki Oikawa
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
| | - Takuma Nishio
- c Graduate School of Natural Science and Technology , Kanazawa University , Kakuma , Japan
| | | | - Seiji Takahashi
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
| | - Satoshi Yamashita
- c Graduate School of Natural Science and Technology , Kanazawa University , Kakuma , Japan
| | - Toru Nakayama
- a Graduate School of Engineering , Tohoku University , Sendai , Japan
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Shimizu A, Hattori M, Oikawa D, Amano H, Ishida-Yamamoto A, Nakano H, Sawamura D, Wakamatsu K, Tokunaga F, Ishikawa O. 210 Mechanistic insight into the repigmentation of piebaldism: Functional characterization of a mutant KIT in melanocyte regeneration. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.207] [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: 10/18/2022]
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Hattori M, Shimizu A, Oikawa D, Kamei K, Kaira K, Ishida-Yamamoto A, Nakano H, Sawamura D, Tokunaga F, Ishikawa O. Endoplasmic reticulum stress in the pathogenesis of pretibial dystrophic epidermolysis bullosa. Br J Dermatol 2017; 177:e92-e93. [DOI: 10.1111/bjd.15342] [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: 11/28/2022]
Affiliation(s)
- M. Hattori
- Department of Dermatology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - A. Shimizu
- Department of Dermatology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - D. Oikawa
- Laboratory of Molecular Cell Biology; Institute for Molecular and Cellular Regulation; Gunma University; Maebashi Gunma Japan
- Department of Pathobiochemistry; Graduate School of Medicine; Osaka City University; Osaka Japan
| | - K. Kamei
- Laboratory of Molecular Cell Biology; Institute for Molecular and Cellular Regulation; Gunma University; Maebashi Gunma Japan
| | - K. Kaira
- Department of Oncology Clinical Development; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - A. Ishida-Yamamoto
- Department of Dermatology; Asahikawa Medical University; Asahikawa Hokkaido Japan
| | - H. Nakano
- Department of Dermatology; Hirosaki University Graduate School of Medicine; Hirosaki Aomori Japan
| | - D. Sawamura
- Department of Dermatology; Hirosaki University Graduate School of Medicine; Hirosaki Aomori Japan
| | - F. Tokunaga
- Laboratory of Molecular Cell Biology; Institute for Molecular and Cellular Regulation; Gunma University; Maebashi Gunma Japan
- Department of Pathobiochemistry; Graduate School of Medicine; Osaka City University; Osaka Japan
| | - O. Ishikawa
- Department of Dermatology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
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Oshita J, Noguchi Y, Watanabe A, Sennari G, Sato S, Hirose T, Oikawa D, Inahashi Y, Iwatsuki M, Ishiyama A, Ōmura S, Sunazuka T. Towards the total synthesis of the anti-trypanosomal macrolide, Actinoallolides: construction of a key linear intermediate. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tharwat M, No author NA, Oikawa D. DNA damage in peripheral blood mononuclear cells and neutrophils of dairy cows during the transition period. Open Vet J 2012. [DOI: 10.5455/ovj.2012.v2.i0.p65] [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: 11/05/2022] Open
Abstract
This study was designed to investigate the apoptotic process in peripheral blood mononuclear cells (PBMC) and polymorphonuclear neutrophil leukocytes (PMN) in dairy cattle during the transition period. Blood samples were collected from 4 dairy cattle at 3 weeks before the expected parturition (wk -3), parturition (wk 0) and 3 weeks after parturition (wk +3). The DNA damage of PBMC and PMN was evaluated based on the comet assay using visual scoring (arbitrary units). Undamaged DNA remained within the core (score 0) and the broken DNA migrated from the core towards the anode forming the tail of a comet (scores 1-4). Significantly higher scores in PBMC at wk 0 and wk +3 were observed compared with those in PMN although there were no significant changes of scores in either cell type during the experimental period. It is suggested that the apoptotic rate of PBMC is accelerated compared with that of PMC during the transition period.
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Koga Y, Takahashi H, Oikawa D, Tachibana T, Denbow DM, Furuse M. Brain creatine functions to attenuate acute stress responses through GABAnergic system in chicks. Neuroscience 2005; 132:65-71. [PMID: 15780467 DOI: 10.1016/j.neuroscience.2005.01.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2005] [Indexed: 10/25/2022]
Abstract
The involvement of brain creatine in the adaptation to acute stress responses was investigated in chicks. In experiment 1, brain creatine content of chicks exposed to social separation stress was significantly increased compared with control chicks. The effects of i.c.v. injection of creatine (2 mug) on vocalizations, spontaneous activity and plasma corticosterone concentration in chicks under social separation stress were investigated in experiment 2. All measurements were attenuated by the i.c.v. injection of creatine compared with the controls under separation stress. Creatine also significantly decreased the active posture, but increased the motionless eye-opened posture, compared with the control. To clarify the relationship between creatine function and GABA receptors, the i.c.v. co-injection of creatine with picrotoxin, a GABA-A receptor antagonist, or CGP54626, a GABA-B receptor antagonist, was investigated in experiments 3 and 4. The effects of creatine on vocalizations and spontaneous activity were attenuated by co-injection of picrotoxin. In this case, active postures decreased by creatine were recovered by co-injection with picrotoxin. However, these effects were not obtained with CGP54626. The results suggest that central creatine functions within the CNS to attenuate the acute stress response by acting through GABA-A receptors in chicks.
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Affiliation(s)
- Y Koga
- Laboratory of Advanced Animal and Marine Bioresources, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan
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Abstract
In this study we examined the effects of 3.3% Garcinia cambogia extract on 10% sucrose loading in mice for 4 weeks. Treatment was found to have no effect on body weight, fat pad weight or serum glucose level. On the other hand, serum total cholesterol, triglycerides, NEFA were observed. Levels of serum insulin and leptin, as well as the leptin/WAT ratio, were lower in the treated mice than in the control. These findings suggested that G. cambogia extract efficiently improved glucose metabolism and displayed leptin-like activity.
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Affiliation(s)
- K Hayamizu
- Laboratory of Advanced Animal and Marine Bioresources, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
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