1
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Motohashi N, Minegishi K, Aoki Y. Inherited myogenic abilities in muscle precursor cells defined by the mitochondrial complex I-encoding protein. Cell Death Dis 2023; 14:689. [PMID: 37857600 PMCID: PMC10587152 DOI: 10.1038/s41419-023-06192-2] [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: 05/04/2023] [Revised: 09/18/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023]
Abstract
Skeletal muscle comprises different muscle fibers, including slow- and fast-type muscles, and satellite cells (SCs), which exist in individual muscle fibers and possess different myogenic properties. Previously, we reported that myoblasts (MBs) from slow-type enriched soleus (SOL) had a high potential to self-renew compared with cells derived from fast-type enriched tibialis anterior (TA). However, whether the functionality of myogenic cells in adult muscles is attributed to the muscle fiber in which they reside and whether the characteristics of myogenic cells derived from slow- and fast-type fibers can be distinguished at the genetic level remain unknown. Global gene expression analysis revealed that the myogenic potential of MBs was independent of the muscle fiber type they reside in but dependent on the region of muscles they are derived from. Thus, in this study, proteomic analysis was conducted to clarify the molecular differences between MBs derived from TA and SOL. NADH dehydrogenase (ubiquinone) iron-sulfur protein 8 (Ndufs8), a subunit of NADH dehydrogenase in mitochondrial complex I, significantly increased in SOL-derived MBs compared with that in TA-derived cells. Moreover, the expression level of Ndufs8 in MBs significantly decreased with age. Gain- and loss-of-function experiments revealed that Ndufs8 expression in MBs promoted differentiation, self-renewal, and apoptosis resistance. In particular, Ndufs8 suppression in MBs increased p53 acetylation, followed by a decline in NAD/NADH ratio. Nicotinamide mononucleotide treatment, which restores the intracellular NAD+ level, could decrease p53 acetylation and increase myogenic cell self-renewal ability in vivo. These results suggested that the functional differences in MBs derived from SOL and TA governed by the mitochondrial complex I-encoding gene reflect the magnitude of the decline in SC number observed with aging, indicating that the replenishment of NAD+ is a possible approach for improving impaired cellular functions caused by aging or diseases.
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Affiliation(s)
- Norio Motohashi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan.
| | - Katsura Minegishi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan
| | - Yoshitsugu Aoki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, 187-8502, Japan.
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2
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Preethy S, Aoki Y, Minegishi K, Iwasaki M, Senthilkumar R, Abraham SJK. Resolution of fibrosis in mdx dystrophic mouse after oral consumption of N-163 strain of Aureobasidium pullulans produced β-glucan. Sci Rep 2023; 13:17008. [PMID: 37813938 PMCID: PMC10562469 DOI: 10.1038/s41598-023-44330-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023] Open
Abstract
Recent advances in the management of Duchenne muscular dystrophy (DMD), such as exon skipping and gene therapy, though have reached a clinical stage, the outcome at its best is still considered suboptimal. In this study, we evaluated a novel N-163 strain of Aureobasidium pullulans produced β-glucan (Neu-REFIX) for its potential as an adjuvant to slow down the progression of the disease by anti-inflammatory and anti-fibrotic effects. In this study, 45 mice in the three groups, 15 each in a group; Gr. 1 normal mice, Gr.2 mdx mice as vehicle, and Gr.3 mdx mice administered the N-163 β-glucan for 45 days. The N-163 β-glucan group showed a significant decrease in the plasma ALT, AST, and LDH levels (126 ± 69 U/l, 634 ± 371 U/l, 3335 ± 1258 U/l) compared with the vehicle group (177 ± 27 U/l, 912 ± 126 U/l, 4186 ± 398 U/l). Plasma TGF-β levels increased, and plasma IL-13 levels decreased in the N-163 group. The inflammation score of HE-stained muscle sections in the N-163 group (1.5 ± 0.8) was lower than that in the vehicle group (2.0 ± 0.8). The N-163 strain β-glucan group (24.22 ± 4.80) showed a significant decrease in the fibrosis area (Masson's Trichrome-positive area) compared with the vehicle group (36.78 ± 5.74). The percentage of centrally nucleated fibres evaluated by Masson's trichrome staining was 0 in the normal group, while it increased to 80% in the vehicle group but remained at 76.8% in the N-163 group. The N-163 β-glucan group showed a significant decrease in the fibrosis area. Considering their safety and easy oral consumption, Neu-REFIX β-glucan could be worth large multicentre clinical studies as adjuvant in slowing down the progress of DMD.
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Affiliation(s)
- Senthilkumar Preethy
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
| | - Yoshitsugu Aoki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Katsura Minegishi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Masaru Iwasaki
- II Department of Surgery, Centre for Advancing Clinical Research (CACR), Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Rajappa Senthilkumar
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India
- Antony- Xavier Interdisciplinary Scholastics (AXIS), GN Corporation Co. Ltd., Kofu, Yamanashi, Japan
| | - Samuel J K Abraham
- II Department of Surgery, Centre for Advancing Clinical Research (CACR), Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan.
- Antony- Xavier Interdisciplinary Scholastics (AXIS), GN Corporation Co. Ltd., Kofu, Yamanashi, Japan.
- Mary-Yoshio Translational Hexagon (MYTH), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, India.
- R & D, Sophy Inc., Kochi, Japan.
- Levy-Jurgen Transdisciplinary Exploratory (LJTE), Global Niche Corp, Wilmington, DE, USA.
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3
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Rothé B, Ikawa Y, Zhang Z, Katoh TA, Kajikawa E, Minegishi K, Xiaorei S, Fortier S, Dal Peraro M, Hamada H, Constam DB. Bicc1 ribonucleoprotein complexes specifying organ laterality are licensed by ANKS6-induced structural remodeling of associated ANKS3. PLoS Biol 2023; 21:e3002302. [PMID: 37733651 PMCID: PMC10513324 DOI: 10.1371/journal.pbio.3002302] [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: 01/24/2023] [Accepted: 08/17/2023] [Indexed: 09/23/2023] Open
Abstract
Organ laterality of vertebrates is specified by accelerated asymmetric decay of Dand5 mRNA mediated by Bicaudal-C1 (Bicc1) on the left side, but whether binding of this or any other mRNA to Bicc1 can be regulated is unknown. Here, we found that a CRISPR-engineered truncation in ankyrin and sterile alpha motif (SAM)-containing 3 (ANKS3) leads to symmetric mRNA decay mediated by the Bicc1-interacting Dand5 3' UTR. AlphaFold structure predictions of protein complexes and their biochemical validation by in vitro reconstitution reveal a novel interaction of the C-terminal coiled coil domain of ANKS3 with Bicc1 that inhibits binding of target mRNAs, depending on the conformation of ANKS3 and its regulation by ANKS6. The dual regulation of RNA binding by mutually opposing structured protein domains in this multivalent protein network emerges as a novel mechanism linking associated laterality defects and possibly other ciliopathies to perturbed dynamics in Bicc1 ribonucleoparticle (RNP) formation.
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Affiliation(s)
- Benjamin Rothé
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV ISREC, Lausanne, Switzerland
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Zhidian Zhang
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV IBI, Lausanne, Switzerland
| | - Takanobu A. Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Eriko Kajikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Katsura Minegishi
- Department of Molecular Therapy, National Institutes of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Sai Xiaorei
- Department of Molecular Therapy, National Institutes of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Simon Fortier
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV ISREC, Lausanne, Switzerland
| | - Matteo Dal Peraro
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV IBI, Lausanne, Switzerland
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Daniel B. Constam
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV ISREC, Lausanne, Switzerland
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4
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Katoh TA, Omori T, Mizuno K, Sai X, Minegishi K, Ikawa Y, Nishimura H, Itabashi T, Kajikawa E, Hiver S, Iwane AH, Ishikawa T, Okada Y, Nishizaka T, Hamada H. Immotile cilia mechanically sense the direction of fluid flow for left-right determination. Science 2023; 379:66-71. [PMID: 36603091 DOI: 10.1126/science.abq8148] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Immotile cilia at the ventral node of mouse embryos are required for sensing leftward fluid flow that breaks left-right symmetry of the body. However, the flow-sensing mechanism has long remained elusive. In this work, we show that immotile cilia at the node undergo asymmetric deformation along the dorsoventral axis in response to the flow. Application of mechanical stimuli to immotile cilia by optical tweezers induced calcium ion transients and degradation of Dand5 messenger RNA (mRNA) in the targeted cells. The Pkd2 channel protein was preferentially localized to the dorsal side of immotile cilia, and calcium ion transients were preferentially induced by mechanical stimuli directed toward the ventral side. Our results uncover the biophysical mechanism by which immotile cilia at the node sense the direction of fluid flow.
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Affiliation(s)
- Takanobu A Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan.,Department of Physics, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan
| | - Toshihiro Omori
- Graduate School of Biomedical Engineering, Tohoku University, Aoba Aramaki, Sendai, Miyagi, Japan
| | - Katsutoshi Mizuno
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Xiaorei Sai
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Hiromi Nishimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Takeshi Itabashi
- RIKEN Center for Biosystems Dynamics Research, Higashi-Hiroshima, Hiroshima, Japan
| | - Eriko Kajikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Sylvain Hiver
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Atsuko H Iwane
- RIKEN Center for Biosystems Dynamics Research, Higashi-Hiroshima, Hiroshima, Japan
| | - Takuji Ishikawa
- Graduate School of Biomedical Engineering, Tohoku University, Aoba Aramaki, Sendai, Miyagi, Japan
| | - Yasushi Okada
- Laboratory for Cell Polarity Regulation, RIKEN Center for Biosystems Dynamics Research, Suita, Osaka, Japan.,Department of Cell Biology and Physics, Universal Biology Institute and International Research Center for Neurointelligence, The University of Tokyo, Hongo, Tokyo, Japan
| | - Takayuki Nishizaka
- Department of Physics, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
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5
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Motohashi N, Minegishi K, Imamura M, Aoki Y. Techniques for Injury, Cell Transplantation, and Histological Analysis in Skeletal Muscle. Methods Mol Biol 2023; 2640:193-205. [PMID: 36995596 DOI: 10.1007/978-1-0716-3036-5_14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Skeletal muscle can adjust to changes in physiological and pathological environments by regenerating using myogenic progenitor cells or adapting muscle fiber sizes and types, metabolism, and contraction ability. To study these changes, muscle samples should be appropriately prepared. Therefore, reliable techniques to accurately analyze and evaluate skeletal muscle phenotypes are required. However, although technical approaches to genetically investigating skeletal muscle are improving, the fundamental strategies for capturing muscle pathology are the same over the decades. Hematoxylin and eosin (H&E) staining or antibodies are the simplest and standard methodologies for assessing skeletal muscle phenotypes. In this chapter, we describe fundamental techniques and protocols for inducing skeletal muscle regeneration by using chemicals and cell transplantation, in addition to methods of preparing and evaluating skeletal muscle samples.
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Affiliation(s)
- Norio Motohashi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
| | - Katsura Minegishi
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Michihiro Imamura
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Yoshitsugu Aoki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
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6
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Minegishi K, Sai X, Hamada H. Role of Wnt signaling and planar cell polarity in left-right asymmetry. Curr Top Dev Biol 2023; 153:181-193. [PMID: 36967194 DOI: 10.1016/bs.ctdb.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Wnt signaling plays essential roles in multiple steps of left-right (L-R) determination in development. First, canonical Wnt signaling is required to form the node, where L-R symmetry breaking takes place. Secondly, planar cell polarity (PCP) driven by non-canonical Wnt signaling polarizes node cells along the anterio-posterior (A-P) axis and provides the tilt of rotating cilia at the node, which generate the leftward fluid flow. Thus, reciprocal expression of Wnt5a/5b and their inhibitors Sfrp1, 2, 5 generates a gradient of Wnt5 activity along the embryo's anterior-posterior (A-P) axis. This polarizes cells at the node, by placing PCP core proteins on the anterior or posterior side of each node cell. Polarized PCP proteins subsequently induce asymmetric organization of microtubules along the A-P axis, which is thought to push the centrally localized basal body toward the posterior side of a node cell. Motile cilia that extend from the posteriorly-shifted basal body is tilted toward the posterior side of the embryo. Thirdly, canonical-Wnt signaling regulates the level and expansion of Nodal activity and establishes L-R asymmetric Nodal activity at the node, the first molecular asymmetry in the mouse embryo. Overall, both canonical and non-canonical Wnt signalings are essential for L-R symmetry breaking.
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Affiliation(s)
| | - Xiaorei Sai
- RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Hiroshi Hamada
- RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.
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7
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Sai X, Ikawa Y, Nishimura H, Mizuno K, Kajikawa E, Katoh TA, Kimura T, Shiratori H, Takaoka K, Hamada H, Minegishi K. Planar cell polarity-dependent asymmetric organization of microtubules for polarized positioning of the basal body in node cells. Development 2022; 149:275058. [PMID: 35420656 DOI: 10.1242/dev.200315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 03/30/2022] [Indexed: 12/31/2022]
Abstract
For left-right symmetry breaking in the mouse embryo, the basal body must become positioned at the posterior side of node cells, but the precise mechanism for this has remained unknown. Here, we examined the role of microtubules (MTs) and actomyosin in this basal body positioning. Exposure of mouse embryos to agents that stabilize or destabilize MTs or F-actin impaired such positioning. Active myosin II was detected at the anterior side of node cells before the posterior shift of the basal body, and this asymmetric activation was lost in Prickle and dachsous mutant embryos. The organization of basal-body associated MTs (baMTs) was asymmetric between the anterior and posterior sides of node cells, with anterior baMTs extending horizontally and posterior baMTs extending vertically. This asymmetry became evident after polarization of the PCP core protein Vangl1 and before the posterior positioning of the basal body, and it also required the PCP core proteins Prickle and dachsous. Our results suggest that the asymmetry in baMT organization may play a role in correct positioning of the basal body for left-right symmetry breaking.
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Affiliation(s)
- Xiaorei Sai
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.,Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Hiromi Nishimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.,Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Katsutoshi Mizuno
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Eriko Kajikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Takanobu A Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Toshiya Kimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Hidetaka Shiratori
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Katsuyoshi Takaoka
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.,Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.,Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
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8
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Maerker M, Getwan M, Dowdle ME, McSheene JC, Gonzalez V, Pelliccia JL, Hamilton DS, Yartseva V, Vejnar C, Tingler M, Minegishi K, Vick P, Giraldez AJ, Hamada H, Burdine RD, Sheets MD, Blum M, Schweickert A. Bicc1 and Dicer regulate left-right patterning through post-transcriptional control of the Nodal inhibitor Dand5. Nat Commun 2021; 12:5482. [PMID: 34531379 PMCID: PMC8446035 DOI: 10.1038/s41467-021-25464-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 01/13/2020] [Accepted: 08/11/2021] [Indexed: 12/12/2022] Open
Abstract
Rotating cilia at the vertebrate left-right organizer (LRO) generate an asymmetric leftward flow, which is sensed by cells at the left LRO margin. Ciliary activity of the calcium channel Pkd2 is crucial for flow sensing. How this flow signal is further processed and relayed to the laterality-determining Nodal cascade in the left lateral plate mesoderm (LPM) is largely unknown. We previously showed that flow down-regulates mRNA expression of the Nodal inhibitor Dand5 in left sensory cells. De-repression of the co-expressed Nodal, complexed with the TGFß growth factor Gdf3, drives LPM Nodal cascade induction. Here, we show that post-transcriptional repression of dand5 is a central process in symmetry breaking of Xenopus, zebrafish and mouse. The RNA binding protein Bicc1 was identified as a post-transcriptional regulator of dand5 and gdf3 via their 3'-UTRs. Two distinct Bicc1 functions on dand5 mRNA were observed at pre- and post-flow stages, affecting mRNA stability or flow induced translational inhibition, respectively. To repress dand5, Bicc1 co-operates with Dicer1, placing both proteins in the process of flow sensing. Intriguingly, Bicc1 mediated translational repression of a dand5 3'-UTR mRNA reporter was responsive to pkd2, suggesting that a flow induced Pkd2 signal triggers Bicc1 mediated dand5 inhibition during symmetry breakage.
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Affiliation(s)
- Markus Maerker
- University of Hohenheim, Institute of Biology, Department of Zoology, Stuttgart, Germany
| | - Maike Getwan
- University of Zurich, Institute of Anatomy, Zurich, Switzerland
| | - Megan E Dowdle
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI, USA
| | - Jason C McSheene
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Vanessa Gonzalez
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - José L Pelliccia
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | | | - Valeria Yartseva
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Charles Vejnar
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Melanie Tingler
- University of Hohenheim, Institute of Biology, Department of Zoology, Stuttgart, Germany
| | - Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan
| | - Philipp Vick
- University of Hohenheim, Institute of Biology, Department of Zoology, Stuttgart, Germany
| | - Antonio J Giraldez
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan
| | - Rebecca D Burdine
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Michael D Sheets
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI, USA
| | - Martin Blum
- University of Hohenheim, Institute of Biology, Department of Zoology, Stuttgart, Germany
| | - Axel Schweickert
- University of Hohenheim, Institute of Biology, Department of Zoology, Stuttgart, Germany.
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9
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Minegishi K, Rothé B, Komatsu KR, Ono H, Ikawa Y, Nishimura H, Katoh TA, Kajikawa E, Sai X, Miyashita E, Takaoka K, Bando K, Kiyonari H, Yamamoto T, Saito H, Constam DB, Hamada H. Fluid flow-induced left-right asymmetric decay of Dand5 mRNA in the mouse embryo requires a Bicc1-Ccr4 RNA degradation complex. Nat Commun 2021; 12:4071. [PMID: 34210974 PMCID: PMC8249388 DOI: 10.1038/s41467-021-24295-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 01/14/2020] [Accepted: 06/09/2021] [Indexed: 12/02/2022] Open
Abstract
Molecular left-right (L-R) asymmetry is established at the node of the mouse embryo as a result of the sensing of a leftward fluid flow by immotile cilia of perinodal crown cells and the consequent degradation of Dand5 mRNA on the left side. We here examined how the fluid flow induces Dand5 mRNA decay. We found that the first 200 nucleotides in the 3' untranslated region (3'-UTR) of Dand5 mRNA are necessary and sufficient for the left-sided decay and to mediate the response of a 3'-UTR reporter transgene to Ca2+, the cation channel Pkd2, the RNA-binding protein Bicc1 and their regulation by the flow direction. We show that Bicc1 preferentially recognizes GACR and YGAC sequences, which can explain the specific binding to a conserved GACGUGAC motif located in the proximal Dand5 3'-UTR. The Cnot3 component of the Ccr4-Not deadenylase complex interacts with Bicc1 and is also required for Dand5 mRNA decay at the node. These results suggest that Ca2+ currents induced by leftward fluid flow stimulate Bicc1 and Ccr4-Not to mediate Dand5 mRNA degradation specifically on the left side of the node.
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Affiliation(s)
- Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Benjamin Rothé
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Life Sciences, Lausanne, Switzerland
| | - Kaoru R Komatsu
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Hiroki Ono
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Hiromi Nishimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Takanobu A Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Eriko Kajikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Xiaorei Sai
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Emi Miyashita
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Katsuyoshi Takaoka
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Kana Bando
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Tadashi Yamamoto
- Laboratory for Immunogenetics, Center for Integrative Medical Sciences, Suehiro-cho, Yokohama, Japan
- Cell Signal Unit, Okinawa Institute of Science and Technology, Kunigami-gun, Okinawa, Japan
| | - Hirohide Saito
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
| | - Daniel B Constam
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Life Sciences, Lausanne, Switzerland.
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan.
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10
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Mizuno K, Shiozawa K, Katoh TA, Minegishi K, Ide T, Ikawa Y, Nishimura H, Takaoka K, Itabashi T, Iwane AH, Nakai J, Shiratori H, Hamada H. Role of Ca 2+ transients at the node of the mouse embryo in breaking of left-right symmetry. Sci Adv 2020; 6:eaba1195. [PMID: 32743070 PMCID: PMC7375832 DOI: 10.1126/sciadv.aba1195] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 06/11/2020] [Indexed: 05/14/2023]
Abstract
Immotile cilia sense extracellular signals such as fluid flow, but whether Ca2+ plays a role in flow sensing has been unclear. Here, we examined the role of ciliary Ca2+ in the flow sensing that initiates the breaking of left-right (L-R) symmetry in the mouse embryo. Intraciliary and cytoplasmic Ca2+ transients were detected in the crown cells at the node. These Ca2+ transients showed L-R asymmetry, which was lost in the absence of fluid flow or the PKD2 channel. Further characterization allowed classification of the Ca2+ transients into two types: cilium-derived, L-R-asymmetric transients (type 1) and cilium-independent transients without an L-R bias (type 2). Type 1 intraciliary transients occurred preferentially at the left posterior region of the node, where L-R symmetry breaking takes place. Suppression of intraciliary Ca2+ transients delayed L-R symmetry breaking. Our results implicate cilium-derived Ca2+ transients in crown cells in initiation of L-R symmetry breaking in the mouse embryo.
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Affiliation(s)
- Katsutoshi Mizuno
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Corresponding author. (K.Miz.); (H.H.)
| | - Kei Shiozawa
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Takanobu A. Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Takahiro Ide
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Hiromi Nishimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Katsuyoshi Takaoka
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Takeshi Itabashi
- RIKEN Center for Biosystems Dynamics Research, Higashi-hiroshima, Hiroshima 739-0046, Japan
| | - Atsuko H. Iwane
- RIKEN Center for Biosystems Dynamics Research, Higashi-hiroshima, Hiroshima 739-0046, Japan
| | - Junichi Nakai
- Department of Oral Function and Morphology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Hidetaka Shiratori
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 560-0011, Japan
- Corresponding author. (K.Miz.); (H.H.)
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11
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Teramoto M, Sugawara R, Minegishi K, Uchikawa M, Takemoto T, Kuroiwa A, Ishii Y, Kondoh H. The absence of SOX2 in the anterior foregut alters the esophagus into trachea and bronchi in both epithelial and mesenchymal components. Biol Open 2020; 9:bio048728. [PMID: 31988094 PMCID: PMC7044460 DOI: 10.1242/bio.048728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 10/14/2019] [Accepted: 01/09/2020] [Indexed: 11/20/2022] Open
Abstract
In the anterior foregut (AFG) of mouse embryos, the transcription factor SOX2 is expressed in the epithelia of the esophagus and proximal branches of respiratory organs comprising the trachea and bronchi, whereas NKX2.1 is expressed only in the epithelia of respiratory organs. Previous studies using hypomorphic Sox2 alleles have indicated that reduced SOX2 expression causes the esophageal epithelium to display some respiratory organ characteristics. In the present study, we produced mouse embryos with AFG-specific SOX2 deficiency. In the absence of SOX2 expression, a single NKX2.1-expressing epithelial tube connected the pharynx and the stomach, and a pair of bronchi developed in the middle of the tube. Expression patterns of NKX2.1 and SOX9 revealed that the anterior and posterior halves of SOX2-deficient AFG epithelial tubes assumed the characteristics of the trachea and bronchus, respectively. In addition, we found that mesenchymal tissues surrounding the SOX2-deficient NKX2.1-expressing epithelial tube changed to those surrounding the trachea and bronchi in the anterior and posterior halves, as indicated by the arrangement of smooth muscle cells and SOX9-expressing cells and by the expression of Wnt4 (esophagus specific), Tbx4 (respiratory organ specific), and Hoxb6 (distal bronchus specific). The impact of mesenchyme-derived signaling on the early stage of AFG epithelial specification has been indicated. Our study demonstrated an opposite trend where epithelial tissue specification causes concordant changes in mesenchymal tissues, indicating a reciprocity of epithelial-mesenchymal interactions.
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Affiliation(s)
- Machiko Teramoto
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
| | - Ryo Sugawara
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
| | - Katsura Minegishi
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Masanori Uchikawa
- Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Tatsuya Takemoto
- Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima 770-8503, Japan
| | - Atsushi Kuroiwa
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Yasuo Ishii
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
- Department of Biology, School of Medicine, Tokyo Women's Medical University, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
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12
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Kajikawa E, Horo U, Ide T, Mizuno K, Minegishi K, Hara Y, Ikawa Y, Nishimura H, Uchikawa M, Kiyonari H, Kuraku S, Hamada H. Nodal paralogues underlie distinct mechanisms for visceral left-right asymmetry in reptiles and mammals. Nat Ecol Evol 2020; 4:261-269. [PMID: 31907383 DOI: 10.1038/s41559-019-1072-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 11/27/2019] [Indexed: 12/13/2022]
Abstract
Unidirectional fluid flow generated by motile cilia at the left-right organizer (LRO) breaks left-right (L-R) symmetry during early embryogenesis in mouse, frog and zebrafish. The chick embryo, however, does not require motile cilia for L-R symmetry breaking. The diversity of mechanisms for L-R symmetry breaking among vertebrates and the trigger for such symmetry breaking in non-mammalian amniotes have remained unknown. Here we examined how L-R asymmetry is established in two reptiles, Madagascar ground gecko and Chinese softshell turtle. Both of these reptiles appear to lack motile cilia at the LRO. The expression of the Nodal gene at the LRO in the reptilian embryos was found to be asymmetric, in contrast to that in vertebrates such as mouse that are dependent on cilia for L-R patterning. Two paralogues of the Nodal gene derived from an ancient gene duplication are retained and expressed differentially in cilia-dependent and cilia-independent vertebrates. The expression of these two Nodal paralogues is similarly controlled in the lateral plate mesoderm but regulated differently at the LRO. Our in-depth analysis of reptilian embryos thus suggests that mammals and non-mammalian amniotes deploy distinct strategies dependent on different Nodal paralogues for rendering Nodal activity asymmetric at the LRO.
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Affiliation(s)
- Eriko Kajikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Uzuki Horo
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.,SEEDS Program/JST Global Science Campus, Osaka University, Toyonaka, Japan.,NADA Senior High School, Kobe, Japan
| | - Takahiro Ide
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Katsutoshi Mizuno
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Katsura Minegishi
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Yuichiro Hara
- Laboratory for Phyloinformatics, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.,Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Yayoi Ikawa
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Hiromi Nishimura
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Masanori Uchikawa
- Graduate School for Frontier Biosciences, Osaka University, Suita, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Shigehiro Kuraku
- Laboratory for Phyloinformatics, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.
| | - Hiroshi Hamada
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.
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13
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Lamri L, Twan WK, Katoh TA, Botilde Y, Takaoka K, Ikawa Y, Nishimura H, Fukumoto A, Minegishi K, Mizuno K, Hamada H. Ciliogenesis-coupled accumulation of IFT-B proteins in a novel cytoplasmic compartment. Genes Cells 2019; 24:731-745. [PMID: 31554018 DOI: 10.1111/gtc.12722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/18/2019] [Accepted: 09/18/2019] [Indexed: 12/14/2022]
Abstract
Cluap1/IFT38 is a ciliary protein that belongs to the IFT-B complex and is required for ciliogenesis. In this study, we have examined the behaviors of Cluap1 protein in nonciliated and ciliated cells. In proliferating cells, Cluap1 is located at the distal appendage of the mother centriole. When cells are induced to form cilia, Cluap1 is found in a novel noncentriolar compartment, the cytoplasmic IFT spot, which mainly exists once in a cell. Other IFT-B proteins such as IFT46 and IFT88 are colocalized in this spot. The cytoplasmic IFT spot is present in mouse embryonic fibroblasts (MEFs) but is absent in ciliogenesis-defective MEFs lacking Cluap1, Kif3a or Odf2. The cytoplasmic IFT spot is also found in mouse embryos but is absent in the Cluap1 mutant embryo. When MEFs are induced to form cilia, the cytoplasmic IFT spot appears at an early step of ciliogenesis but starts to disappear when ciliogenesis is mostly completed. These results suggest that IFT-B proteins such as Cluap1 accumulate in a previously undescribed cytoplasmic compartment during ciliogenesis.
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Affiliation(s)
- Lynda Lamri
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Wang Kyaw Twan
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Takanobu A Katoh
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Yanick Botilde
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Katsuyoshi Takaoka
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Yayoi Ikawa
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Hiromi Nishimura
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Akemi Fukumoto
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Katsura Minegishi
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Katsutoshi Mizuno
- Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Hiroshi Hamada
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.,Laboratory for Organismal Patterning, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
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14
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Minegishi K, Heins B, Pereira G. Peri-estrus activity and rumination time and its application to estrus prediction: Evidence from dairy herds under organic grazing and low-input conventional production. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Salfer J, Minegishi K, Lazarus W, Berning E, Endres M. Finances and returns for robotic dairies. J Dairy Sci 2017; 100:7739-7749. [DOI: 10.3168/jds.2016-11976] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/22/2016] [Indexed: 11/19/2022]
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16
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Kasuga Y, Miyakoshi K, Nishio H, Akiba Y, Otani T, Fukutake M, Ikenoue S, Ochiai D, Matsumoto T, Tanaka K, Minegishi K, Kuji N, Roberts R, Aoki D, Tanaka M. Mid-trimester residual cervical length and the risk of preterm birth in pregnancies after abdominal radical trachelectomy: a retrospective analysis. BJOG 2017; 124:1729-1735. [PMID: 28418597 DOI: 10.1111/1471-0528.14688] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2017] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the association between mid-trimester residual cervical length (CL) and the risk of preterm birth in pregnancies after abdominal radical trachelectomy (RT). DESIGN Retrospective cohort study. SETTING University hospital. POPULATION A total of 33 deliveries after 22 weeks' gestation in 30 women who underwent abdominal RT including prophylactic cervical cerclage and perinatal care between January 2002 and May 2016. METHODS The association between mid-trimester residual CL (the distance between the cerclage and the external cervical os) and gestational age at delivery was investigated. Receiver-operating characteristics (ROC) curve analysis was performed to estimate the optimal cut-off values of the mid-trimester residual CL for the prediction of preterm birth. MAIN OUTCOME MEASURES Preterm birth before 34 weeks' gestation. RESULTS Mid-trimester residual CL showed a significant correlation with gestational age at delivery (r = 0.36, P < 0.05). There was a significant difference in residual CL between women who did and those who did not give birth before 34 weeks (P < 0.05). Mid-trimester residual CL < 13 mm was a good predictor of birth before 34 weeks, with a sensitivity of 67%, specificity of 75%, positive predictive value of 55% and negative predictive value of 86% (area under ROC curve, 0.75). CONCLUSIONS Mid-trimester residual CL is significantly correlated with gestational age at delivery. Residual CL assessment could be used to reassure physicians and women that there is only a small chance of preterm birth in pregnancies after abdominal RT. TWEETABLE ABSTRACT Mid-trimester residual cervical length is a good predictor of preterm birth after radical trachelectomy.
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Affiliation(s)
- Y Kasuga
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - K Miyakoshi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - H Nishio
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Y Akiba
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - T Otani
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - M Fukutake
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - S Ikenoue
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - D Ochiai
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - T Matsumoto
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - K Tanaka
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | | | - N Kuji
- Department of Obstetrics and Gynecology, Tokyo Medical University, Tokyo, Japan
| | - R Roberts
- Center for Clinical Research, Keio University School of Medicine, Tokyo, Japan
| | - D Aoki
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - M Tanaka
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
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17
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Salfer JA, Endres MI, Lazarus W, Minegishi K. 0036 Finances and returns for robotic dairies. J Anim Sci 2016. [DOI: 10.2527/jam2016-0036] [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: 11/13/2022] Open
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18
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Yoshimi R, Toyota Y, Tsuchida N, Sugiyama Y, Kunishita Y, Kishimoto D, Kamiyama R, Minegishi K, Hama M, Kirino Y, Ohno S, Ueda A, Nakajima H. AB0973 The 8-Joint Ultrasound Score Is Useful for Monitoring Response To Treatment for Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4533] [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: 11/04/2022]
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19
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Nagai M, Minegishi K, Komada M, Tsuchiya M, Kameda T, Yamada S. Extraction of DNA from human embryos after long-term preservation in formalin and Bouin's solutions. Congenit Anom (Kyoto) 2016; 56:112-8. [PMID: 26662860 DOI: 10.1111/cga.12148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 12/03/2015] [Indexed: 01/05/2023]
Abstract
The "Kyoto Collection of Human Embryos" at Kyoto University was begun in 1961. Although morphological analyses of samples in the Kyoto Collection have been performed, these embryos have been considered difficult to genetically analyze because they have been preserved in formalin or Bouin's solution for 20-50 years. Owing to the recent advances in molecular biology, it has become possible to extract DNA from long-term fixed tissues. The purpose of this study was to extract DNA from wet preparations of human embryo samples after long-term preservation in fixing solution. We optimized the DNA extraction protocol to be suitable for tissues that have been damaged by long-term fixation, including DNA-protein crosslinking damage. Diluting Li2 CO3 with 70% ethanol effectively removed picric acid from samples fixed in Bouin's solution. Additionally, 20.0 mg/mL proteinase was valuable to lyse the long-term fixed samples. The extracted DNA was checked with PCR amplification using several sets of primers and sequence analysis. The PCR products included at least 295- and 838-bp amplicons. These results show that the extracted DNA is applicable for genetic analyses, and indicate that old embryos in the Kyoto Collection should be made available for future studies. The protocol described in this study can successfully extract DNA from old specimens and, with improvements, should be applicable in research aiming to understand the molecular mechanisms of human congenital anomalies.
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Affiliation(s)
- Momoko Nagai
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Katsura Minegishi
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Frontier Biosciences, Osaka University Graduate School, Osaka, Japan
| | - Munekazu Komada
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan.,School of dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Maiko Tsuchiya
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tomomi Kameda
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shigehito Yamada
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
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20
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Hama M, Kirino Y, Toyota Y, Minegishi K, Yoshimi R, Takeno M, Ueda A, Ishigatsubo Y. SAT0620 Wrist PD Signal Detected by Ultrasonography Relates to Joint Destruction in Rheumatoid Arthritis Under Biologics Therapy in Real World: Table 1. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2542] [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: 11/04/2022]
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21
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Minegishi K, Hama M, Yoshimi R, Kirino Y, Takeno M, Ueda A, Ishigatsubo Y. AB0278 Early Termination of the First Biological Disease-Modifying Antirheumatic Drugs Therapy Leads to Radiological Progression in Patients with Rheumatoid Arthritis, Irrespective of Subsequent Therapies. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3858] [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: 11/04/2022]
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22
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Kunishita Y, Yoshimi R, Takeno M, Toyota Y, Sugiyama Y, Tsuchida N, Kishimoto D, Kamiyama R, Minegishi K, Hama M, Kirino Y, Asami Y, Yamazaki T, Sekiguchi A, Suda A, Ideguchi H, Ihata A, Ohno S, Ueda A, Kawai T, Igarashi T, Nagaoka S, Ishigatsubo Y. SAT0214 Comparison of Response to Tocilizumab Between Biologic-Naïve Patients and Non-Responder to TNF Inhibitor Failure in Rheumatoid Arthritis: A Retrospective Study Using the Y-Curd Registry. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3785] [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: 11/03/2022]
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23
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Toyota Y, Minegishi K, Hama M, Yoshimi R, Sugiyama Y, Tsuchida N, Kunishita Y, Kishimoto D, Kamiyama R, Kirino Y, Takeno M, Ueda A, Ishigatsubo Y. FRI0610 Ultrasonograpic Assessment Covers a Pitfal of Physycal Examination in the Ankle Joints in Patients with Rheumatoid Arthritis: Table1. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4355] [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: 11/04/2022]
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24
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Yoshimi R, Takeno M, Toyota Y, Tsuchida N, Sugiyama Y, Kunishita Y, Kishimoto D, Kamiyama R, Minegishi K, Hama M, Kirino Y, Ueda A, Ishigatsubo Y. FRI0561 The Availability of On-Demand Ultrasonography Assessment in the Most Affected Joint for Management of RA Patients in Daily Practice. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1693] [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: 11/04/2022]
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25
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Shiratori H, Yashiro K, Iwai N, Oki S, Minegishi K, Ikawa Y, Kanata K, Hamada H. Self-regulated left-right asymmetric expression of Pitx2c in the developing mouse limb. Dev Biol 2014; 395:331-41. [PMID: 25224222 DOI: 10.1016/j.ydbio.2014.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 04/11/2014] [Revised: 08/07/2014] [Accepted: 09/05/2014] [Indexed: 01/08/2023]
Abstract
The transcription factor Pitx2c is expressed in primordial visceral organs in a left-right (L-R) asymmetric manner and executes situs-specific morphogenesis. Here we show that Pitx2c is also L-R asymmetrically expressed in the developing mouse limb. Human PITX2c exhibits the same transcriptional activity in the mouse limb. The asymmetric expression of Pitx2c in the limb also exhibits dorsal-ventral and anterior-posterior polarities, being confined to the posterior-dorsal region of the left limb. Left-sided Pitx2c expression in the limb is regulated by Nodal signaling through a Nodal-responsive enhancer. Pitx2c is expressed in lateral plate mesoderm (LPM)-derived cells in the left limb that contribute to various limb connective tissues. The number of Pitx2c(+) cells in the left limb was found to be negatively regulated by Pitx2c itself. Although obvious defects were not apparent in the limb of mice lacking asymmetric Pitx2c expression, Pitx2c may regulate functional L-R asymmetry of the limb.
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Affiliation(s)
- Hidetaka Shiratori
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan.
| | - Kenta Yashiro
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Naomi Iwai
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shinya Oki
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Katsura Minegishi
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yayoi Ikawa
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kohei Kanata
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Hamada
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, and CREST, Japan Science and Technology Corporation (JST), 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
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Kunishita Y, Yoshimi R, Kishimoto D, Kamiyama R, Minegishi K, Hama M, Kirino Y, Asami Y, Yamazaki T, Sekiguchi A, Suda A, Ideguchi H, Ihata A, Ohno S, Ueda A, Takeno M, Kawai T, Igarashi T, Nagaoka S, Ishigatsubo Y. SAT0263 Comparison between TOCILIZUMAB and Alternatve TNF Inhibitor as A Second Line following TNF Inhibitor Failure in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5168] [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: 11/03/2022]
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27
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Kishimoto D, Kunishita Y, Kamiyama R, Minegishi K, Hama M, Yoshimi R, Asami Y, Kirino Y, Ueda A, Takeno M, Ishigatsubo Y. AB0510 Predicting Factors of Unfavorable Clinical Outcome in Lupus Nephritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5411] [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: 11/03/2022]
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28
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Watanabe T, Minegishi K, Ihata A, Hama M, Yoshimi R, Kirino Y, Ohno S, Tateishi U, Ueda A, Takeno M, Ishigatsubo Y. OP0052 Prospective Evaluation of 18F-FDG and 18F-Naf Pet/Ct: Imaging Analysis of Inflammation and Bone Metabolism in Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2231] [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: 11/03/2022]
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29
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Hama M, Minegishi K, Kishimoto D, Watanabe R, Yoshimi R, Ihata A, Ueda A, Takeno M, Ishigatsubo Y. AB0732 New programs of automatic acquisition of pd gain and automatic extraction of appropriate image in msus. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3054] [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: 11/04/2022]
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30
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Nishio H, Fujii T, Sugiyama J, Kuji N, Tanaka M, Hamatani T, Miyakoshi K, Minegishi K, Tsuda H, Iwata T, Tanaka K, Fukuchi T, Takehara Y, Yoshimura Y, Aoki D. Reproductive and obstetric outcomes after radical abdominal trachelectomy for early-stage cervical cancer in a series of 31 pregnancies. Hum Reprod 2013; 28:1793-8. [DOI: 10.1093/humrep/det118] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Hanson J, Johnson D, Lichtenberg E, Minegishi K. Competitiveness of management-intensive grazing dairies in the mid-Atlantic region from 1995 to 2009. J Dairy Sci 2013; 96:1894-904. [DOI: 10.3168/jds.2011-5234] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 11/15/2012] [Indexed: 11/19/2022]
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32
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Sato Y, Izumi Y, Minegishi K, Komada M, Yamada S, Kakui K, Tatsumi K, Mikami Y, Fujiwara H, Konishi I. Prenatal Findings in Congenital Leukemia: A Case Report. Fetal Diagn Ther 2011; 29:325-30. [DOI: 10.1159/000323582] [Citation(s) in RCA: 11] [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] [Received: 07/22/2010] [Accepted: 12/14/2010] [Indexed: 11/19/2022]
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33
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Talevi R, Barbato V, Mollo V, De Stefano C, Finelli F, Ferraro R, Gualtieri R, Zhou P, Liu AH, Cao YX, Roman H, Pura I, Tarta O, Bourdel N, Marpeau L, Sabourin JC, Portmann M, Nagy ZP, Behr B, Alvaro Mercadal B, Demeestere I, Imbert R, Englert Y, Delbaere A, Lueke S, Buendgen N, Koester F, Diedrich K, Griesinger G, Kim A, Han JE, Eunmi C, Kim YS, Cho JH, Yoon TK, Piomboni P, Stendardi A, Palumberi D, Morgante G, De Leo V, Serafini F, Focarelli R, Tatone C, Di Emidio G, Carbone MC, Vento M, Ciriminna R, Artini PG, Kyono K, Ishikawa T, Usui K, Hatori M, Yasmin L, Sato E, Iwasaka M, Fujii K, Owada N, Sankai T, McLaughlin M, Fineron P, Anderson RA, Wallace WHB, Telfer EE, Labied S, Beliard A, Munaut C, Foidart JM, Turkcuoglu I, Oktay K, Rodriguez-Wallberg K, Kuwayama M, Takayama Y, Mori C, Kagawa N, Akakubo N, Takehara Y, Kato K, Leibo SP, Kato O, Yoon H, Shin Y, cha J, Kim H, Lee W, Yoon S, Lim J, Larman MG, Gardner DK, Zander-Fox D, Lane M, Hamilton H, Oktay K, Lee S, Ozkavukcu S, Heytens E, Alappat RM, Sole M, Boada M, Biadiu M, Santalo J, Coroleu B, Barri PN, Veiga A, Rossi L, Bartoletti R, Mengarelli M, Boccia Artieri G, Gemini L, Mazzoli L, Giannini L, Scaravelli G, Kagawa N, Silber SJ, Kuwayama M, Yamanguchi S, Nagumo Y, Takai Y, Ishihara S, Takehara Y, Kato O, Lee S, Heytens E, Ozkavukcu S, Alappat RM, Oktay K, Soleimani R, Heytens E, Rottiers I, Gojayev A, Oktay K, Cuvelier AC, De Sutter P, Salama M, Winkler K, Murach KF, Hofer S, Wildt L, Friess SC, Okumura N, Kuji N, Kishimi A, Nishio H, Mochimaru Y, Minegishi K, Miyakoshi K, Fujii T, Tanaka M, Aoki D, Yoshimura Y, Hasegawa K, Juanzi S, Zhao W, Zhang S, Xue X, Silber S, Zhang J, Kuwayama M, Kagawa N, Meirow D, Gosden R, Westphal JR, Gerritse R, Beerendonk CCM, Braat DDM, Peek R, Coticchio G, Dal Canto M, Brambillasca F, Mignini Renzini M, Merola M, Lain M, Fadini R, Nottola SA, Albani E, Coticchio G, Lorenzo C, Carlini T, Maione M, Scaravelli G, Borini A, Macchiarelli G, Levi-Setti PE, Rienzi L, Romano S, Capalbo A, Iussig B, Albricci L, Colamaria S, Baroni E, Sapienza F, Giuliani M, Anniballo R, Ubaldi FM, Beyer DA, Schultze-Mosgau A, Amari F, Griesinger G, Diedrich K, Al-Hasani S, Resta S, Magli MC, Ruberti A, Lappi M, Ferraretti AP, Gianaroli L, Prisant N, Belloc S, Cohen-Bacrie M, Hazout A, Olivennes F, Aubriot FX, Alvarez S, De Mouzon J, Thieulin C, Cohen-Bacrie P, Wozniak S, Szkodziak P, Wozniakowska E, Paszkowski M, Paszkowski T, Diaz D, Nagy ZP, Dragnic S, Hayward B, Bennett R, Al-Sabbagh A, Novella-Maestre E, Teruel J, Carmona L, Rosello E, Pellicer A, Sanchez-Serrano M, Lee JR, Lee JY, Kim CH, Lee Y, Lee S, Jee BC, Suh CS, Kim SH, Moon SY, Sanchez-Serrano M, Novella-Maestre E, Teruel J, Mirabet V, Crespo J, Pellicer A, Schiewe M, Nugent N, Zozula S, Anderson R, Zulategui JF, Meseguer M, Pellicer A, Remohi J, Castello D, Romero JLL, De los Santos MJ, Cobo AC, von Wolff M, Jauckus J, Kupka M, Strowitzki T, Lawrenz B, Meirow D, Raanani H, Kaufman B, Maman E, Mendel MM, Dor J, Buendgen NK, Lueke S, Diedrich K, Griesinger G, Combelles C, Wang HY, Racowsky C, Kuleshova L, Tucker M, Graham J, Richter K, Carter J, Lim J, Levy M. Posters * Fertility Preservation. Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.372] [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: 11/14/2022] Open
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34
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Yoshikawa A, Suzuki K, Abe A, Tanaka T, Yamaguchi K, Tanaka T, Ishikawa Y, Minegishi K, Gotanda Y, Yugi H, Uchida S, Satake M, Mizoguchi H, Tadokoro K. Effect of selective vaccination on a decrease in the rate of hepatitis B virus-positive Japanese first-time blood donors. Transfus Med 2009; 19:172-9. [DOI: 10.1111/j.1365-3148.2009.00930.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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35
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Tomono T, Murokawa H, Minegishi K, Yamanaka R, Lizuka HY, Miyamoto M, Satoh S, Nakahira S, Murozuka T, Emura H, Doi Y, Mine H, Yokoyama S, Ohnuma H, Tanaka T, Yoshikawa A, Nishioka K. Status of NAT screening for HCV, HIV and HBV: experience in Japan. Dev Biol (Basel) 2003; 108:29-39. [PMID: 12220140] [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] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The first nationwide nucleic acid amplification testing (NAT) for hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus type 1 (HIV-1) of voluntarily donated blood after serological pre-screening and before release of cellular components and plasma for fractionation was implemented by the Japanese Red Cross Blood Transfusion Services. The NAT screening assay using multiplex reagent is time-saving, cost effective, and labour-saving procedure for all blood and blood products including short-shelf life platelets. During the 50-mini-pool NAT screening of serologically negative donations (February 1, 2001-April 30, 2001), we were able to screen out 112 HBV-positive, 25 HCV-positive, and 4 HIV-1 positive units from blood and blood components.
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Affiliation(s)
- T Tomono
- JRC Headquarter, Blood Services Department.
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Minegishi K, Yoshikawa A, Kishimoto S, Yugi H, Yokoya N, Sakurada M, Kiyokawa H, Nishioka K. Superiority of minipool nucleic acid amplification technology for hepatitis B virus over chemiluminescence immunoassay for hepatitis B surface antigen screening. Vox Sang 2003; 84:287-91. [PMID: 12757502 DOI: 10.1046/j.1423-0410.2003.00289.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVES The Japanese Red Cross (JRC) have developed a fully automated multiplex (MPX) nucleic acid amplification technology (NAT) system for hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus 1 (HIV-1). This is used to test serologically negative blood units from volunteer, non-remunerated donors. The system utilizes a 50-sample pool for NAT screening with an input volume of each pool. This results in a significantly higher sensitivity for hepatitis B than that seen with highly sensitive hepatitis B surface antigen (HBsAg) testing. MATERIALS AND METHODS From 1 February 2000 to 15 October 2001, over 11 million donations, which were serologically negative, were tested using the MPX NAT system. Donations found to be HBV DNA positive were further tested by using the chemiluminescence immunoassay (CLIA). RESULTS Out of 181 HBV DNA-positive donations, 96 (53%) and 76 (42%) were negative by individual enzyme immunoassay (EIA) and CLIA testing, respectively. CONCLUSIONS The sensitivity of the 50-sample pool MPX NAT system was higher than that of individual HBsAg screening by CLIA. By adopting this NAT-screening system, the JRC has improved the safety of the blood supply and maintained supply across Japan.
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Affiliation(s)
- K Minegishi
- Japanese Red Cross Headquarter, Blood Services Department, Tokyo, Japan
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37
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Ohnuma H, Tanaka T, Yoshikawa A, Murokawa H, Minegishi K, Yamanaka R, Lizuka HY, Miyamoto M, Satoh S, Nakahira S, Tomono T, Murozuka T, Takeda Y, Doi Y, Mine H, Yokoyama S, Hirose T, Nishioka K. The first large-scale nucleic acid amplification testing (NAT) of donated blood using multiplex reagent for simultaneous detection of HBV, HCV, and HIV-1 and significance of NAT for HBV. Microbiol Immunol 2002; 45:667-72. [PMID: 11694079 DOI: 10.1111/j.1348-0421.2001.tb01300.x] [Citation(s) in RCA: 29] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The first nationwide nucleic acid amplification testing (NAT) for hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus type 1 (HIV-1) of voluntarily donated blood after serological pre-screening and before release of cellular components and plasma for fractionation was implemented by the Japanese Red Cross Blood Transfusion Services. From February 1, 2000 to April 30, 2001, specimens from 6,805,010 units of serologically negative donation were screened in minipools of 50 samples within 24 hr after blood donation by NAT using multiplex HBV/HCV/HIV-1 reagent for blood transfusion including short shelf-life platelets. Among them, 112 HBV DNA-positives, 25 HCV RNA positives and 4 HIV-1 RNA positives were screened out and we could prevent transfusion of these NAT positive units. Subtypes/genotypes of HBV DNA, adr/C, adw/A, adw/B, adw/C, ayr/C and ayw/D were found and adr/C was predominant. A total of 61.6 % of them (69/112) were negative by overnight EIA. Sixth three of HBV NAT-positive samples carried virus loads less than 10(4) copies/mL and 92.1 % of them (58/63) were negative by overnight EIA. The virus growth curves of HBV in 6 cases obtained by retrospective and prospective follow-up study showed exponential straight lines in the early stage of serological window periods and the log times of HBV growth (10 fold increase) in serological window period were between 4.6 and 7.6 days. NAT screening with highly sensitive reagents in pool of specimens is useful to exclude blood units with low level of HBV and HBV mutants from blood transfusion.
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Affiliation(s)
- H Ohnuma
- Japanese Red Cross (JRC) Staitaimai Blood Center, Hidaka, Saitama 350-1213, Japan
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38
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Miyakoshi K, Ishimoto H, Tanigaki S, Minegishi K, Tanaka M, Miyazaki T, Yoshimura Y. Prenatal diagnosis of midgut volvulus by sonography and magnetic resonance imaging. Am J Perinatol 2001; 18:447-50. [PMID: 11733860 DOI: 10.1055/s-2001-18794] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [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: 10/17/2022]
Abstract
We present a case of congenital midgut volvulus detected by prenatal sonography and ultrafast magnetic resonance (MR) imaging. At 34 weeks of gestation, enlarged hyperechogenic loops without peristalsis was identified by sonographic examination. On ultrafast T2-weighted single-shot fast-spin echo MR imaging, enlarged loops exhibited a lower signal intensity than the surrounding bowel loops, suggesting intraluminal hemorrhage. At explorative laparotomy following delivery, midgut volvulus causing hemorrhagic necrosis was found. Combined use of sonography and ultrafast MR imaging is useful to identify fetal midgut volvulus with hemorrhagic change.
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Affiliation(s)
- K Miyakoshi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
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39
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Tanaka M, Miyazaki T, Tanigaki S, Kasai K, Minegishi K, Miyakoshi K, Ishimoto H, Yoshimura Y. Participation of reactive oxygen species in PGF2alpha-induced apoptosis in rat luteal cells. Reproduction 2000. [DOI: 10.1530/reprod/120.2.239] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Prostaglandin F(2alpha) (PGF(2alpha)) is implicated in the process of luteal regression in many species. Treatment of rat luteal tissue with PGF(2alpha) increases the generation of reactive oxygen species. Since reactive oxygen species have been implicated in apoptosis, the present study was undertaken to determine whether reactive oxygen species play a role in the PGF(2alpha)-induced apoptosis of rat luteal cells. Rat luteal cells were loaded with 6-carboxy-2, 7'-dichlorodihydro-fluorescein (CDCFH) diacetate, di (acetomethyl ester), which can be oxidized by reactive oxygen species to yield CDCF, a fluorescent molecule, and the cells were treated with different doses of PGF(2alpha). Incubation with 100 micromol PGF(2alpha) l(-1) induced an increase in CDCF fluorescence (P < 0. 05). Treatment of cells with PGF(2alpha) for 48 h in serum-free medium induced a dose-dependent increase in cell death, and these cells exhibited the morphological characteristics typical of apoptosis, including condensed or fragmented nuclei and fragmentation of internucleosomal DNA. Pretreatment of these cells with ascorbic acid, N,N'-dimethylthiourea, or superoxide dismutase, which acts as an antioxidant or a radical scavenger, prevented the PGF(2alpha)-induced apoptosis. These results demonstrate that PGF(2alpha) produces reactive oxygen species and induces apoptosis in rat luteal cells, indicating that the reactive oxygen species may induce apoptotic cell death during luteolysis.
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40
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Tanaka M, Miyazaki T, Tanigaki S, Kasai K, Minegishi K, Miyakoshi K, Ishimoto H, Yoshimura Y. Participation of reactive oxygen species in PGF2alpha-induced apoptosis in rat luteal cells. J Reprod Fertil 2000; 120:239-45. [PMID: 11058439 DOI: 10.1530/jrf.0.1200239] [Citation(s) in RCA: 31] [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: 11/08/2022]
Abstract
Prostaglandin F(2alpha) (PGF(2alpha)) is implicated in the process of luteal regression in many species. Treatment of rat luteal tissue with PGF(2alpha) increases the generation of reactive oxygen species. Since reactive oxygen species have been implicated in apoptosis, the present study was undertaken to determine whether reactive oxygen species play a role in the PGF(2alpha)-induced apoptosis of rat luteal cells. Rat luteal cells were loaded with 6-carboxy-2, 7'-dichlorodihydro-fluorescein (CDCFH) diacetate, di (acetomethyl ester), which can be oxidized by reactive oxygen species to yield CDCF, a fluorescent molecule, and the cells were treated with different doses of PGF(2alpha). Incubation with 100 micromol PGF(2alpha) l(-1) induced an increase in CDCF fluorescence (P < 0. 05). Treatment of cells with PGF(2alpha) for 48 h in serum-free medium induced a dose-dependent increase in cell death, and these cells exhibited the morphological characteristics typical of apoptosis, including condensed or fragmented nuclei and fragmentation of internucleosomal DNA. Pretreatment of these cells with ascorbic acid, N,N'-dimethylthiourea, or superoxide dismutase, which acts as an antioxidant or a radical scavenger, prevented the PGF(2alpha)-induced apoptosis. These results demonstrate that PGF(2alpha) produces reactive oxygen species and induces apoptosis in rat luteal cells, indicating that the reactive oxygen species may induce apoptotic cell death during luteolysis.
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Affiliation(s)
- M Tanaka
- Department of Obstetrics and Gynecology, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
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41
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Miyazaki T, Tanaka M, Miyakoshi K, Minegishi K, Kasai K, Yoshimura Y. Power and colour Doppler ultrasonography for the evaluation of the vasculature of the human corpus luteum. Hum Reprod 1998; 13:2836-41. [PMID: 9804242 DOI: 10.1093/humrep/13.10.2836] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We used power Doppler imaging to examine neovascularization in the corpus luteum (CL) in 12 healthy volunteers. We also investigated whether CL blood flow reflected luteal function. The ratio of the area of vessels in the CL to the area of a sectional plane at the maximum diameter of the CL observed by power Doppler (FA ratio) was used as a quantitative index of the vascularity of the CL. The pulsatility index (PI) was significantly lower in ovarian arteries with CL than without CL (P < 0.05). Changes in ovarian arterial and intra-luteal PI appeared to reflect physiological changes in the vasculature of the CL. There was no correlation between the volume of the CL or the FA ratio and the concentration of progesterone. The pattern of changes in the product of the FA ratio and the CL volume and in the progesterone concentration was similar. The progesterone concentration was positively correlated with this product (r = 0.74, P < 0.01). The product of the FA ratio and the CL volume plateaued during the mid- to late luteal phase, suggesting the presence of functional and structural luteolysis. These findings suggest that colour Doppler ultrasonography, including power Doppler imaging, can detect physiological changes in the blood flow of the ovary in the luteal phase, and may be a useful noninvasive tool for evaluating CL function.
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Affiliation(s)
- T Miyazaki
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan
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42
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Hasegawa K, Minegishi K, Sugihara K, Toyoshima K, Itoh K, Nishino R, Kitai H. [A case of primary transitional cell carcinoma of the Bartholin gland with human papillomavirus type 18 infection]. Nihon Sanka Fujinka Gakkai Zasshi 1995; 47:1385-8. [PMID: 8568361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- K Hasegawa
- Department of Obstetrics and Gynecology, Social Insurance Saitama Central Hospital
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43
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Iwata N, Suzuki K, Minegishi K, Kawanishi T, Hara S, Endo T, Takahashi A. Induction of cytochrome P450 1A2 by musk analogues and other inducing agents in rat liver. Eur J Pharmacol 1993; 248:243-50. [PMID: 8293789 DOI: 10.1016/0926-6917(93)90051-q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We characterized the inducing effects of two musk analogues, musk xylene and musk ambrette, on phase I and phase II drug-metabolizing enzymes in rat liver and compared their effects with 3-methylcholanthrene, isosafrole and 2(3)-tertbutylhydroxyanisole (BHA) at 0.1 mmol/kg dose level. Musk xylene and isosafrole increased more efficiently the metabolic activation of 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole (Glu-P-1) to mutagen than that of benzo(a)pyrene. Musk ambrette increased both the activation of Glu-P-1 and benzo(a)pyrene to the same extent. Western blot analyses revealed that musk xylene, musk ambrette, isosafrole and BHA induced more strongly cytochrome P450 1A2 (CYP1A2) in microsomes than CYP1A1. 3-Methylcholanthrene induced CYP1A1 in preference to CYP1A2. On the other hand, all drugs except for 3-methylcholanthrene did not show remarkable increases in phase II enzyme activities, such as DT-diaphorase, glutathione S-transferase and UDP-glucuronyltransferase, at 0.1 mmol/kg dose level. These results show that musk xylene, musk ambrette, isosafrole and BHA at the dose level used in this study possess the potency to induce CYP1A2 without remarkable induction of CYP1A1 and phase II enzyme activities as observed for 3-methylcholanthrene, although they have been considered to induce both phase I and phase II drug-metabolizing enzymes at higher doses.
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Affiliation(s)
- N Iwata
- Department of Forensic Medicine, Tokyo Medical College, Japan
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44
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Iwata N, Minegishi K, Suzuki K, Ohno Y, Igarashi T, Satoh T, Takahashi A. An unusual profile of musk xylene-induced drug-metabolizing enzymes in rat liver. Biochem Pharmacol 1993; 45:1659-65. [PMID: 8484805 DOI: 10.1016/0006-2952(93)90307-i] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We have demonstrated previously that musk xylene, a non-mutagenic carcinogen, is a novel and specific inducer of CYP1A2 in rats (Iwata et al., Biochem Biophys Res Commun 184: 149-153, 1992). In the present study, the effects of musk xylene (50, 100 or 200 mg/kg body weight, i.p., for 5 consecutive days) on both Phase I and Phase II metabolizing enzymes in rat liver were investigated further and more completely. Among the mixed-function oxidases monitored, 7-ethoxycoumarin deethylase and 7-pentoxyresorufin depentylase activities were increased at all dose levels from 1.6- to 1.7-fold and 2.6- to 3.1-fold, respectively. Benzo[a]pyrene hydroxylase activity was increased significantly at only the 200 mg/kg dose level of musk xylene (1.5-fold). Regarding Phase II enzymes, activities of both cytosolic DT-diaphorase and glutathione S-transferase (GST) were increased up to 2.0- to 2.4-fold by musk xylene in a dose-dependent manner. Western blot analysis revealed that the changes in these activities were caused by increases in the amounts of DT-diaphorase and GST Ya subunit. Microsomal UDP-glucoronyltransferase (UDPGT) activity assayed with p-nitrophenol as substrate was increased 1.6- to 2.0-fold. These results show that musk xylene induces both Phase I cytochrome P450 mixed-function oxidase (CYP1A2 specific) and Phase II metabolizing enzyme systems (DT-diaphorase, GST Ya subunit and UDPGT) in rat liver.
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Affiliation(s)
- N Iwata
- Division of Xenobiotic Metabolism and Disposition, National Institute of Hygiene Sciences, Tokyo, Japan
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Abstract
The effect of musk xylene on contents of both cytochrome P-450IA1 and cytochrome P-450IA2 in rat liver was investigated using Western blotting analysis. Rats were treated i.p. for five consecutive days with either 50, 100 or 200 mg musk xylene/kg body weight. Musk xylene increased both total cytochrome P-450 and cytochrome b5 contents in rat liver microsomes. Musk xylene induced cytochrome P-450IA2 (384 pmol/mg protein) strongly and preferentially and the ratio of cytochrome P450IA2/P-450IA1 was about 12 at the lowest dose tested. Musk xylene also induced the cytochrome P-450IA1 dose-dependently, but these extents were very small (32-174 pmol/mg protein). These results suggest that musk xylene may be a more specific inducer for cytochrome P-450IA2 than any other inducers reported.
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Affiliation(s)
- N Iwata
- Division of Xenobiotic Metabolism and Disposition, National Institute of Hygienic Sciences, Tokyo, Japan
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Nishimaki-Mogami T, Tanaka A, Minegishi K, Takahashi A. Effect of sorbic acid feeding on peroxisomes and sorboyl-CoA metabolizing enzymes in mouse liver. Selective induction of 2,4-dienoyl-CoA hydratase. Biochem Pharmacol 1991; 42:239-46. [PMID: 1859445 DOI: 10.1016/0006-2952(91)90709-e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
On the basis of the finding that sorbic acid (SA)-induced hepatoma was correlated with the depletion of reduced glutathione (GSH) in mouse liver (Tsuchiya et al., Mutation Res 130: 267-262, 1984), the possible conversion of SA to a metabolite which is reactive with SH-compounds was studied. Sorboyl-CoA was hydrated and then reduced to 3-keto-4-hexenoyl-CoA by the combined actions of mitochondrial hydratase (crotonase) and L-3-hydroxyacyl-CoA dehydrogenase. Upon the addition of GSH or coenzyme A, 3-keto-4-hexenoyl-CoA was nonenzymatically converted to another 3-ketoacyl-CoA derivative, possibly a Michael type adduct, in a time- and concentration-dependent manner. Alternatively, sorboyl-CoA can be reduced by 2,4-dienoyl-CoA reductase and completely beta-oxidized without the generation of 3-keto-4-hexenoyl-CoA. Two-week feeding of mice of 15% SA caused a 2.0-fold induction of peroxisome beta-oxidation in the liver. SA caused a marked induction (3.6-fold) of hydratase toward sorboyl-CoA but a less pronounced induction (1.3-fold) of 2,4-dienoyl-CoA reductase, leading to about a 3-fold elevation in the hydratase: reductase ratio. The elevated ratio was sustained throughout the period of SA feeding up to 12 weeks. Thus, a large amount of SA could be converted to 3-keto-4-hexenoyl-CoA during this period. Oxidative stress caused by a depleted cellular SH-pool together with the induction of peroxisome proliferation by SA-feeding may implicate the mechanism by which non-mutagenic SA caused hepatoma.
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Abstract
Distribution, metabolism and excretion of musk xylene (MX) were investigated in male Wistar rats. Urinary and fecal excretion accounted for 10 and 75% of the dose (70 mg/kg), respectively, on day 7 after orally administration of 3H-MX to rats. Total residue of radioactivity in tissues on day 7 was less than 2.0% of the administered dose. The highest concentration was found in adipose tissue and the second was in liver. Some metabolites of MX were identified using GC-MS and NMR after purification by column or thin layer chromatography of feces, bile and urine extracts. MX, 2-NH2-MX, 2-Ac-MX, 2-NH2-3-CH2OH-MX, and 2-NH2-5-tert-BuOH-MX were found in feces, bile and urine. 4-NH2-MX and metabolite X were found in feces and urine. 4-NH2-3-CH2OH-MX was found in urine. HO-MX was found in bile. The major route of excretion for MX was the feces via bile. The reduction of the 2-nitro group of MX to the amino group was a key step in metabolism. Further metabolism of 2-NH2-MX may proceed by decreased steric hindrance of functional group.
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Affiliation(s)
- K Minegishi
- Division of Xenobiotic Metabolism and Disposition, National Institute of Hygienic Sciences, Tokyo, Japan
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Watanabe J, Minegishi K, Mitsumori T, Ishifuji M, Oguchi T, Ueda M, Tokunaga E, Tanaka E, Kiyosawa K, Furuta S. Prevalence of anti-HCV antibody in blood donors in the Tokyo area. Vox Sang 1990; 59:86-8. [PMID: 2173281 DOI: 10.1111/j.1423-0410.1990.tb05015.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Prospective studies of posttransfusion hepatitis carried out in the past decade showed that 18.1% of the blood transfusions resulted in non-A non-B hepatitis in Japan. As an approach to the prevention of posttransfusion non-A non-B hepatitis (PTNANB), anti-hepatitis C virus (HCV) positivity was measured in 2,970 blood donations in the Tokyo area, and in 200 children aged between 6 and 15 years. Thirty-four cases were anti-HCV-positive, showing an overall positivity of 1.14%. None of the 200 children younger than 15 years old were positive. Correlation of anti-HCV positivity with the serum ALT levels was observed, but by reducing the accepted ALT levels from 35 Karmen Units (KU) down to 25 KU, it is estimated that 62.5% of the observed PTNANB would still have occurred, and 5.1% of the donated blood could not be used for transfusion. On the other hand, it is estimated that the majority of PTNANB could be prevented, with the loss of 1.14% of donated blood units, using the anti-HCV screening test.
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Affiliation(s)
- J Watanabe
- Japanese Red Cross Central Blood Center, Tokyo
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Abstract
The toluene degradative transposon Tn4651 is included within another transposon, Tn4653, and both of these elements are members of the Tn3 family. The tnpA gene product of each element mediates formation of cointegrates as intermediate products of transposition, and the tnpS and tnpT gene products encoded by Tn4651 take part in resolution of both Tn4651- and Tn4653-mediated cointegrates. Sequence analysis demonstrated that Tn4651 and Tn4653 have 46- and 38-base-pair terminal inverted repeats, respectively, and that both elements generate 5-base-pair duplication of the target sequence upon transposition. Complementation tests of the Tn4651- and Tn4653-encoded transposition functions with those of Tn3, Tn21, and Tn1721 showed that (i) the trans-acting transposition functions encoded by Tn4651 were not interchangeable with those encoded by the four other transposons, (ii) the Tn4653 tnpA function was interchangeable with the Tn1721 function, and (iii) Tn4653 coded for a resolvase (tnpR gene product) that complemented the tnpR mutations of Tn21 and Tn1721. The Tn4653 tnpR gene was located just 5' upstream of the tnpA gene and shared extensive sequence homology with the Tn1721 tnpR gene. The res region was located adjacent to the tnpR gene, and sequence analysis indicated that failure of the Tn4653 tnpR product to resolve the Tn4653-mediated cointegrates is ascribed to an incomplete structure of the res region.
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Affiliation(s)
- M Tsuda
- Department of Biology, Faculty of Science, University of Tokyo, Japan
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Nishimaki-Mogami T, Minegishi K, Takahashi A, Kawasaki Y, Kurokawa Y, Uchiyama M. Characterization of skin-surface lipids from the monkey (Macaca fascicularis). Lipids 1988; 23:869-77. [PMID: 3185122 DOI: 10.1007/bf02536207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Skin-surface lipids from the monkey Macaca fascicularis are composed of sterol esters (38%), cholesterol (4%) and two types of wax diesters, identified as Type II (IIa and IIb, 17% and 40%, respectively). Type IIa contained diesters of 1,2-alkanediols esterified with two molecules of long-chain (C14-C34) fatty acids having straight and branched chains. In the diesters IIa, fatty acids shorter than C19 predominated in position 1, and fatty acids longer than C20 predominated in position 2. Type IIb contained diesters of 1,2-alkanediols esterified with C4 and C5 branched-chain fatty acids (predominantly isovaleric acid) at position 1 and long-chain (C14-C27) acids, having straight and branched chains, at position 2. The short-chain acids were converted to 2-nitrophenylhydrazides and analyzed by high-performance liquid chromatography (HPLC). Ammonia chemical ionization (CI)-gas chromatography (GC)-mass spectrometry (MS) resolved the intact diesters IIb into 12 peaks corresponding to molecular weights ranging from 597 to 748, and showed that the molecular species, such as C21-C16-C5 (diol, fatty acid in position 2, fatty acid in position 1), C22-C16-C5 and C23-C16-C5, were prevalent. The fatty acids from both diesters were mostly (greater than 98%) saturated. The 1,2-alkane-diols from both diesters consisted of C16-C26 saturated straight- and branched-chain components. The acyl groups of sterol esters contained 86% C14-C34 branched-chain acids.(ABSTRACT TRUNCATED AT 250 WORDS)
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