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Wada Y, Takei Y, Sasabuchi Y, Matsui H, Yasunaga H, Kohro T, Fujiwara H, Yamana H. Treatment strategies for pelvic organ prolapse and postoperative outcomes in older women with long-term care needs: A population-based retrospective cohort study. Int J Gynaecol Obstet 2024. [PMID: 38634271 DOI: 10.1002/ijgo.15510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/09/2024] [Accepted: 03/18/2024] [Indexed: 04/19/2024]
Abstract
OBJECTIVE The study aimed to investigate treatment options for older women with pelvic organ prolapse (POP) and postoperative outcomes based on their long-term care (LTC) status. METHODS We used the medical and LTC insurance claims databases of Tochigi Prefecture in Japan, covering 2014 to 2019. We included women 65 years and older with POP and evaluated their care status and treatment, excluding women with an observation period <6 months. Among women with a postsurgical interval ≥6 months, we compared care level changes and deaths within 6 months and complications within 1 month postoperatively between those with and without LTC using Fisher exact test. RESULTS We identified 3406 eligible women. Of the 447 women with LTC and 2959 women without LTC, 16 (3.6%) and 415 (14.0%), respectively, underwent surgery. Among 393 women with a postsurgical interval ≥6 months, 19 (4.8%) required LTC at surgery. Two of the 19 women with LTC (10.5%) and eight of 374 women without LTC (2.1%) experienced worsening care-needs level. No deaths were recorded. Urinary tract infection (UTI) was significantly more frequent in women with LTC than in women without LTC (36.8% vs 8.6%). Other complications were rare in both groups. CONCLUSION The proportion of patients who underwent surgery for POP was lower in women with LTC than in women without LTC. Postoperative UTI was common and 11% had a worsening care-needs level postoperatively, whereas other complications were infrequent. Further detailed studies would contribute to providing optimal treatment to enhance patients' quality of life.
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Affiliation(s)
- Yoshimitsu Wada
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
- Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Japan
| | - Yuji Takei
- Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Japan
| | - Yusuke Sasabuchi
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
- Department of Real-world Evidence, The University of Tokyo, Tokyo, Japan
| | - Hiroki Matsui
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Hideo Yasunaga
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Takahide Kohro
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
| | - Hiroyuki Fujiwara
- Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Japan
| | - Hayato Yamana
- Data Science Center, Jichi Medical University, Shimotsuke, Japan
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Sun X, Hosomi K, Shimoyama A, Yoshii K, Saika A, Yamaura H, Nagatake T, Kiyono H, Fukase K, Kunisawa J. Alcaligenes lipid A functions as a superior mucosal adjuvant to monophosphoryl lipid A via the recruitment and activation of CD11b+ dendritic cells in nasal tissue. Int Immunol 2024; 36:33-43. [PMID: 38006376 PMCID: PMC10823578 DOI: 10.1093/intimm/dxad045] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 11/24/2023] [Indexed: 11/27/2023] Open
Abstract
We previously demonstrated that Alcaligenes-derived lipid A (ALA), which is produced from an intestinal lymphoid tissue-resident commensal bacterium, is an effective adjuvant for inducing antigen-specific immune responses. To understand the immunologic characteristics of ALA as a vaccine adjuvant, we here compared the adjuvant activity of ALA with that of a licensed adjuvant (monophosphoryl lipid A, MPLA) in mice. Although the adjuvant activity of ALA was only slightly greater than that of MPLA for subcutaneous immunization, ALA induced significantly greater IgA antibody production than did MPLA during nasal immunization. Regarding the underlying mechanism, ALA increased and activated CD11b+ CD103- CD11c+ dendritic cells in the nasal tissue by stimulating chemokine responses. These findings revealed the superiority of ALA as a mucosal adjuvant due to the unique immunologic functions of ALA in nasal tissue.
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Affiliation(s)
- Xiao Sun
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hosomi
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
| | - Atsushi Shimoyama
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
- Collaborative Research Between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka 560-0043, Japan
| | - Ken Yoshii
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
- Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Azusa Saika
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
| | - Haruki Yamaura
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
| | - Takahiro Nagatake
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
- Department of Life Sciences, Laboratory of Functional Anatomy, School of Agriculture, Meiji University, Kanagawa 214-8571, Japan
| | - Hiroshi Kiyono
- Division of Gastroenterology, Department of Medicine, University of California San Diego (UCSD), San Diego, CA 92093, USA
- Chiba University (CU)-UCSD Center for Mucosal Immunology, Allergy and Vaccines (cMAV), UCSD, San Diego, CA 92093-0063, USA
- Future Medicine Education and Research Organization, Chiba University, Chiba 260-8670, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba 260-8677, Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
- Collaborative Research Between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka 560-0043, Japan
| | - Jun Kunisawa
- Laboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka 567-0085, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
- Collaborative Research Between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka 560-0043, Japan
- Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Department of Microbiology and Immunology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
- Research Organization for Nano and Life Innovation, Waseda University, Tokyo 162-0041, Japan
- Graduate School of Dentistry, Osaka University, Suita 565-0871, Japan
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Chan HT, Nagayama S, Chin YM, Otaki M, Hayashi R, Kiyotani K, Fukunaga Y, Ueno M, Nakamura Y, Low S. Clinical significance of clonal hematopoiesis in the interpretation of blood liquid biopsy. Mol Oncol 2020; 14:1719-1730. [PMID: 32449983 PMCID: PMC7400786 DOI: 10.1002/1878-0261.12727] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 05/13/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023] Open
Abstract
As the use of next-generation sequencing (NGS) for plasma cell-free DNA (cfDNA) continues to expand in clinical settings, accurate identification of circulating tumor DNA mutations is important to validate its use in the clinical management for cancer patients. Here, we aimed to characterize mutations including clonal hematopoiesis (CH)-related mutations in plasma cfDNA and tumor tissues using the same ultradeep NGS assay and evaluate the clinical significance of CH-related mutations on the interpretation of liquid biopsy results. Ultradeep targeted NGS using Oncomine Pan-Cancer Panel was performed on matched surgically resected tumor tissues, peripheral blood cells (PBCs), and 120 plasma cfDNA samples from 38 colorectal cancer patients. The clinical significance of the CH-related mutations in plasma cfDNA was evaluated by longitudinal monitoring of the postoperative plasma samples. Among the 38 patients, 74 nonsynonymous mutations were identified from tumor tissues and 64 mutations from the preoperative plasma samples. Eleven (17%) of the 64 mutations identified in plasma cfDNA were also detected in PBC DNA and were identified to be CH-related mutations. Overall, 11 of 38 (29%) patients in this cohort harbored at least one CH-related mutation in plasma cfDNA. These CH-related mutations were continuously detected in subsequent postoperative plasma samples from three patients which could be misinterpreted as the presence of residual disease or as lack of treatment response. Our results indicated that it is essential to integrate the mutational information of PBCs to differentiate tumor-derived from CH-related mutations in liquid biopsy analysis. This would prevent the misinterpretation of results to avoid misinformed clinical management for cancer patients.
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Affiliation(s)
- Hiu Ting Chan
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
| | - Satoshi Nagayama
- Department of Gastroenterological and SurgeryCancer Institute HospitalJapanese Foundation for Cancer ResearchTokyoJapan
| | - Yoon Ming Chin
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
- Cancer Precision Medicine, IncKawasakiJapan
| | - Masumi Otaki
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
| | - Rie Hayashi
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
- Cancer Precision Medicine, IncKawasakiJapan
| | - Kazuma Kiyotani
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
| | - Yosuke Fukunaga
- Department of Gastroenterological and SurgeryCancer Institute HospitalJapanese Foundation for Cancer ResearchTokyoJapan
| | - Masashi Ueno
- Department of Gastroenterological and SurgeryCancer Institute HospitalJapanese Foundation for Cancer ResearchTokyoJapan
| | - Yusuke Nakamura
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
| | - Siew‐Kee Low
- Cancer Precision Medicine CenterJapanese Foundation for Cancer ResearchTokyoJapan
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Qi X, Takahashi H, Kawasaki Y, Ohta Y, Isozaki M, Kojima M, Takebayashi Y, Sakakibara H, Imanishi S, Chen X, Nakazono M. Differences in xylem development between Dutch and Japanese tomato (Solanum lycopersicum) correlate with cytokinin levels in hypocotyls. Ann Bot 2020; 126:315-322. [PMID: 32407462 PMCID: PMC7380485 DOI: 10.1093/aob/mcaa094] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 05/06/2020] [Indexed: 05/12/2023]
Abstract
BACKGROUND AND AIMS Dutch tomato cultivars tend to have a greater yield than Japanese cultivars even if they are grown under the same conditions. Factors contributing to the increased yield of the Dutch cultivars were a greater light use efficiency and greater leaf photosynthetic rate. On the other hand, the relationship between tomato yields and anatomical traits is still unclear. The aim of this study is to identify the anatomical traits related to the difference in yield between Dutch and Japanese cultivars. METHODS Anatomical properties were compared during different growth stages of Dutch and Japanese tomatoes. Hormone profiles and related gene expression in hypocotyls of Dutch and Japanese cultivars were compared in the hypocotyls of 3- and 4-week-old plants. KEY RESULTS Dutch cultivars have a more developed secondary xylem than Japanese cultivars, which would allow for greater transport of water, mineral nutrients and phytohormones to the shoots. The areas and ratios of the xylem in the hypocotyls of 3- to 6-week-old plants were larger in the Dutch cultivars. In reciprocal grafts of the Japanese and Dutch cultivars, xylem development at the scion and rootstock depended on the scion cultivar, suggesting that some factors in the scion are responsible for the difference in xylem development. The cytokinin content, especially the level of N6-(Δ 2-isopentenyl) adenine (iP)-type cytokinin, was higher in the Dutch cultivars. This result was supported by the greater expression of Sl-IPT3 (a cytokinin biosynthesis gene) and Sl-RR16/17 (a cytokinin-responsive gene) in the Dutch cultivars. CONCLUSIONS These results suggest that iP-type cytokinins, which are locally synthesized in the hypocotyl, contribute to xylem development. The greater xylem development in Dutch cultivars might contribute to the high yield of the tomato.
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Affiliation(s)
- Xiaohua Qi
- Department of Horticulture, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Hirokazu Takahashi
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan
- For correspondence. E-mail
| | - Yasushi Kawasaki
- Western Region Agricultural Research Center, National Agriculture and Food Research Organization, Zentsuji, Japan
| | - Yuya Ohta
- Mie Prefecture Agricultural Research Institute, Ureshino Kawakitacho, Matsusaka, Mie, Japan
| | - Masahide Isozaki
- Institute of Vegetable and Floriculture Science, NARO, Tsukuba, Japan
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Suehiro, Tsurumi, Yokohama, Japan
| | - Yumiko Takebayashi
- RIKEN Center for Sustainable Resource Science, Suehiro, Tsurumi, Yokohama, Japan
| | - Hitoshi Sakakibara
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan
- RIKEN Center for Sustainable Resource Science, Suehiro, Tsurumi, Yokohama, Japan
| | | | - Xuehao Chen
- Department of Horticulture, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Mikio Nakazono
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, Japan
- The UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA, Australia
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Takahashi I, Hosomi K, Nagatake T, Toubou H, Yamamoto D, Hayashi I, Kurashima Y, Sato S, Shibata N, Goto Y, Maruyama F, Nakagawa I, Kuwae A, Abe A, Kunisawa J, Kiyono H. Persistent colonization of non-lymphoid tissue-resident macrophages by Stenotrophomonas maltophilia. Int Immunol 2020; 32:133-141. [PMID: 31630178 PMCID: PMC10689348 DOI: 10.1093/intimm/dxz071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 10/17/2019] [Indexed: 11/14/2022] Open
Abstract
Accumulating evidence has revealed that lymphoid tissue-resident commensal bacteria (e.g. Alcaligenes spp.) survive within dendritic cells. We extended our previous study by investigating microbes that persistently colonize colonic macrophages. 16S rRNA-based metagenome analysis using DNA purified from murine colonic macrophages revealed the presence of Stenotrophomonas maltophilia. The in situ intracellular colonization by S. maltophilia was recapitulated in vitro by using bone marrow-derived macrophages (BMDMs). Co-culture of BMDMs with clinically isolated S. maltophilia led to increased mitochondrial respiration and robust IL-10 production. We further identified a 25-kDa protein encoded by the gene assigned as smlt2713 (recently renamed as SMLT_RS12935) and secreted by S. maltophilia as the factor responsible for enhanced IL-10 production by BMDMs. IL-10 production is critical for maintenance of the symbiotic condition, because intracellular colonization by S. maltophilia was impaired in IL-10-deficient BMDMs, and smlt2713-deficient S. maltophilia failed to persistently colonize IL-10-competent BMDMs. These findings indicate a novel commensal network between colonic macrophages and S. maltophilia that is mediated by IL-10 and smlt2713.
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Affiliation(s)
- Ichiro Takahashi
- Department of Mucosal Immunology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-Osaka, Japan
| | - Koji Hosomi
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-Osaka, Japan
| | - Takahiro Nagatake
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-Osaka, Japan
| | - Hirokazu Toubou
- Department of Mucosal Immunology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Daiki Yamamoto
- Department of Mucosal Immunology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Ikue Hayashi
- Department of Mucosal Immunology, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Yosuke Kurashima
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shintaro Sato
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Naoko Shibata
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yoshiyuki Goto
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Fumito Maruyama
- Department of Microbiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ichiro Nakagawa
- Department of Microbiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Asaomi Kuwae
- Laboratory of Bacterial Infection, Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Akio Abe
- Laboratory of Bacterial Infection, Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Jun Kunisawa
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-Osaka, Japan
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Graduate School of Medicine, Graduate School of Pharmaceutical Sciences, and Graduate School of Dentistry, Osaka University, Suita-Osaka, Japan
- Graduate School of Medicine, Kobe University, Kobe-Hyogo, Japan
| | - Hiroshi Kiyono
- International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Nakagita T, Ishida A, Matsuya T, Kobayashi T, Narukawa M, Hirokawa T, Hashimoto M, Misaka T. Structural insights into the differences among lactisole derivatives in inhibitory mechanisms against the human sweet taste receptor. PLoS One 2019; 14:e0213552. [PMID: 30883570 PMCID: PMC6422327 DOI: 10.1371/journal.pone.0213552] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 11/28/2018] [Accepted: 02/23/2019] [Indexed: 11/22/2022] Open
Abstract
Lactisole, an inhibitor of the human sweet taste receptor, has a 2-phenoxypropionic acid skeleton and has been shown to interact with the transmembrane domain of the T1R3 subunit (T1R3-TMD) of the receptor. Another inhibitor, 2,4-DP, which shares the same molecular skeleton as lactisole, was confirmed to be approximately 10-fold more potent in its inhibitory activity than lactisole; however the structural basis of their inhibitory mechanisms against the receptor remains to be elucidated. Crystal structures of the TMD of metabotropic glutamate receptors, which along with T1Rs are categorized as class C G-protein coupled receptors, have recently been reported and made it possible to create an accurate structural model for T1R3-TMD. In this study, the detailed structural mechanism underlying sweet taste inhibition was characterized by comparing the action of lactisole on T1R3-TMD with that of 2,4-DP. We first performed a series of experiments using cultured cells expressing the sweet taste receptor with mutations and examined the interactions with these inhibitors. Based on the results, we next performed docking simulations and then applied molecular dynamics-based energy minimization. Our analyses clearly revealed that the (S)-isomers of both lactisole and 2,4-DP, interacted with the same seven residues in T1R3-TMD and that the inhibitory potencies of those inhibitors were mainly due to stabilizing interactions mediated via their carboxyl groups in the vertical dimension of the ligand pocket of T1R3-TMD. In addition, 2,4-DP engaged in a hydrophobic interaction mediated by its o-Cl group, and this interaction may be chiefly responsible for the higher inhibitory potency of 2,4-DP.
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Affiliation(s)
- Tomoya Nakagita
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akiko Ishida
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Takumi Matsuya
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takuya Kobayashi
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masataka Narukawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takatsugu Hirokawa
- Molecular Profiling Research Center for Drug Discovery, National Institutes of Advanced Industrial Science and Technology, Tokyo, Japan
- Department of Chemical Biology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Makoto Hashimoto
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Takumi Misaka
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- * E-mail:
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Masuzaki H, Kozuka C, Okamoto S, Yonamine M, Tanaka H, Shimabukuro M. Brown rice-specific γ-oryzanol as a promising prophylactic avenue to protect against diabetes mellitus and obesity in humans. J Diabetes Investig 2019; 10:18-25. [PMID: 29978570 PMCID: PMC6319487 DOI: 10.1111/jdi.12892] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 07/04/2018] [Indexed: 02/06/2023] Open
Abstract
Chronic overconsumption of animal fats causes a variety of health problems, including diabetes mellitus and obesity. Underlying molecular mechanisms encompass leptin resistance, a decrease in rewarding effects of physical activities, xanthine oxidase-induced oxidative stress in vasculature and peripheral tissue, impaired activation of incretin signaling, deviation in food preference, and dysbiosis of gut microbiota. Based on our clinical observation that daily intake of brown rice effectively ameliorates bodyweight gain, impaired glucose tolerance/insulin resistance and dependence on fatty foods in obese, prediabetes men, a line of research on brown rice (rice bran)-derived γ-oryzanol in mice experiments, cultured cells and human clinical trials is underway in our laboratory. Our works in mice showed that γ-oryzanol, an ester mixture of ferulic acid and several kinds of phytosterols, acts as a molecular chaperone, thereby attenuating the strong preference for animal fats through suppression of endoplasmic reticulum stress in the hypothalamus. In pancreatic islets from both high-fat diet-induced and streptozotocin-induced diabetic mice, γ-oryzanol ameliorates endoplasmic reticulum stress and protects β-cells against apoptosis. Noticeably, γ-oryzanol also acts as a potent inhibitor against deoxyribonucleic acid methyltransferases in the brain reward system (striatum) in mice, thereby attenuating, at least partly, the preference for a high-fat diet through the epigenetic modulation of striatal dopamine D2 receptor. Because dopamine D2 receptor signaling in the brain reward system is considerably attenuated in obese humans and rodents, γ-oryzanol might represent a unique property to ameliorate both hedonic and metabolic dysregulation of feeding behavior, highlighting a promising prophylactic avenue to protect against metabolic derangement.
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Affiliation(s)
- Hiroaki Masuzaki
- Division of Endocrinology, Diabetes and Metabolism, Hematology, RheumatologyDepartment of MedicineGraduate School of MedicineUniversity of the RyukyusOkinawaJapan
| | - Chisayo Kozuka
- Division of Endocrinology, Diabetes and Metabolism, Hematology, RheumatologyDepartment of MedicineGraduate School of MedicineUniversity of the RyukyusOkinawaJapan
| | - Shiki Okamoto
- Division of Endocrinology, Diabetes and Metabolism, Hematology, RheumatologyDepartment of MedicineGraduate School of MedicineUniversity of the RyukyusOkinawaJapan
| | - Masato Yonamine
- Division of Endocrinology, Diabetes and Metabolism, Hematology, RheumatologyDepartment of MedicineGraduate School of MedicineUniversity of the RyukyusOkinawaJapan
| | | | - Michio Shimabukuro
- Department of Diabetes, Endocrinology and MetabolismSchool of MedicineFukushima Medical UniversityFukushimaJapan
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8
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Sasaki T, Mita M, Ikari N, Kuboyama A, Hashimoto S, Kaneko T, Ishiguro M, Shimizu M, Inoue J, Sato R. Identification of key amino acid residues in the hTGR5-nomilin interaction and construction of its binding model. PLoS One 2017; 12:e0179226. [PMID: 28594916 PMCID: PMC5464637 DOI: 10.1371/journal.pone.0179226] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 03/26/2017] [Accepted: 05/25/2017] [Indexed: 12/12/2022] Open
Abstract
TGR5, a member of the G protein-coupled receptor (GPCR) family, is activated by bile acids. Because TGR5 promotes energy expenditure and improves glucose homeostasis, it is recognized as a key target in treating metabolic diseases. We previously showed that nomilin, a citrus limonoid, activates TGR5 and confers anti-obesity and anti-hyperglycemic effects in mice. Information on the TGR5–nomilin interaction regarding molecular structure, however, has not been reported. In the present study, we found that human TGR5 (hTGR5) shows higher nomilin responsiveness than does mouse TGR5 (mTGR5). Using mouse–human chimeric TGR5, we also found that three amino acid residues (Q77ECL1, R80ECL1, and Y893.29) are important in the hTGR5–nomilin interaction. Based on these results, an hTGR5–nomilin binding model was constructed using in silico docking simulation, demonstrating that four hydrophilic hydrogen-bonding interactions occur between nomilin and hTGR5. The binding mode of hTGR5–nomilin is vastly different from those of other TGR5 agonists previously reported, suggesting that TGR5 forms various binding patterns depending on the type of agonist. Our study promotes a better understanding of the structure of TGR5, and it may be useful in developing and screening new TGR5 agonists.
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Affiliation(s)
- Takashi Sasaki
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Moeko Mita
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Naho Ikari
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Ayane Kuboyama
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Shuzo Hashimoto
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Tatsuya Kaneko
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Masaji Ishiguro
- Department of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, Higashijima, Akiha-ku, Niigata, Japan
| | - Makoto Shimizu
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Jun Inoue
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Ryuichiro Sato
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
- Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan
- * E-mail:
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Abstract
At the 93rd annual meeting of the Physiological Society of Japan, a symposium entitled "Expanding frontiers in weight-control research explored by young investigators" was organized. The latest research on weight control was presented by young up-and-coming investigators. The symposium consisted of the following presentations: Gastrointestinal brush cells, immunity, and energy homeostasis; Impact of a brown rice-derived bioactive product on feeding regulation and fuel metabolism; A novel G protein-coupled receptor-regulated neuronal signaling pathway triggers sustained orexigenic effects; and NMDA receptor co-agonist D-serine regulates food preference. These four talks presented at the symposium were summarized as a series of short reviews in this review.
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Affiliation(s)
- Yoshiro Ishimaru
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Chisayo Kozuka
- Division of Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology (Second Department of Internal Medicine), Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan.
| | - Kenichiro Nakajima
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Tsutomu Sasaki
- Laboratory for Metabolic Signaling. Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan.
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