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  1. AU="Arimura, Takashi"
  2. AU="Kizilkilic, Osman"

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  1. Artikel: A comparative transcriptomics analysis reveals ethylene glycol derivatives of squalene ameliorate excessive lipogenesis and inflammatory response in 3T3-L1 preadipocytes.

    Cheng, Yu / Ferdousi, Farhana / Foronda, Bryan Angelo / Linh, Tran Ngoc / Ganbold, Munkhzul / Yada, Akira / Arimura, Takashi / Isoda, Hiroko

    Heliyon

    2024  Band 10, Heft 5, Seite(n) e26867

    Abstract: Squalene (SQ) is a natural compound with anti-inflammatory, anti-cancer, and anti-oxidant effects, but due to its low solubility, its biological properties have been greatly underestimated. This study aims to explore the differences in gene expression ... ...

    Abstract Squalene (SQ) is a natural compound with anti-inflammatory, anti-cancer, and anti-oxidant effects, but due to its low solubility, its biological properties have been greatly underestimated. This study aims to explore the differences in gene expression patterns of four newly synthesized amphipathic ethylene glycol (EG) derivatives of SQ by whole-genome transcriptomics analysis using DNA microarray to examine the mRNA expression profile of adipocytes differentiated from 3T3-L1 cells treated with SQ and its EG derivatives. Enrichment analyses of the transcriptional data showed that compared with SQ, its EG derivatives exerted different, in most cases desirable, biological responses. EG derivatives showed increased enrichment of mitochondrial functions, lipid and glucose metabolism, and inflammatory response. Mono-, di-, and tetra-SQ showed higher enrichment of the cellular component-ribosome. Histological staining showed EG derivatives prevented excessive lipid accumulation. Additionally, mitochondrial transcription factors showed upregulation in tetra-SQ-treated cells. Notably, EG derivatives showed better anti-inflammatory effects. Further, gene-disease association analysis predicted substantial improvement in the bioactivities of SQ derivatives in metabolic diseases. Cluster analyses revealed di- and tetra-SQ had more functional similarities than others, reflected in their scanning electron microscopy images; both di- and tetra-SQ self-organized into similar sizes and shapes of vesicles, subsequently improving their cation binding activities. Protein-protein interaction networks further revealed that cation binding activity might explain a major part, if not all, of the differences observed in functional analyses. Altogether, the addition of EG derivatives may improve the biological responses of SQ and thus may enhance its health-promoting potential.
    Sprache Englisch
    Erscheinungsdatum 2024-03-02
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2024.e26867
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Effect of Alkali Metal Cations on the Unilamellar Vesicle of a Squalene Bearing 18-Crown-6.

    Ngoc Linh, Tran / Arimura, Takashi / Tominaga, Ken-Ichi / Isoda, Hiroko / Kawasaki, Masato / Adachi, Naruhiko

    ACS omega

    2023  Band 8, Heft 12, Seite(n) 11583–11587

    Abstract: Squalene bearing 18-crown-6 was synthesized and formed unilamellar vesicles with a membrane thickness of about 6 nm and a diameter of about 0.32 μm. In the wake of the recognition of alkali metal cations, squalene unilamellar vesicles become larger as ... ...

    Abstract Squalene bearing 18-crown-6 was synthesized and formed unilamellar vesicles with a membrane thickness of about 6 nm and a diameter of about 0.32 μm. In the wake of the recognition of alkali metal cations, squalene unilamellar vesicles become larger as multilamellar vesicles or smaller while maintaining unilamellar vesicles depending on cations.
    Sprache Englisch
    Erscheinungsdatum 2023-03-17
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c00744
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: New Amphiphilic Squalene Derivative Improves Metabolism of Adipocytes Differentiated From Diabetic Adipose-Derived Stem Cells and Prevents Excessive Lipogenesis.

    Ganbold, Munkhzul / Ferdousi, Farhana / Arimura, Takashi / Tominaga, Kenichi / Isoda, Hiroko

    Frontiers in cell and developmental biology

    2020  Band 8, Seite(n) 577259

    Abstract: Squalene (Sq) is a natural compound, found in various plant oils, algae, and larger quantity in deep-sea shark liver. It is also known as an intermediate of cholesterol synthesis in plants and animals including humans. Although evidences demonstrated its ...

    Abstract Squalene (Sq) is a natural compound, found in various plant oils, algae, and larger quantity in deep-sea shark liver. It is also known as an intermediate of cholesterol synthesis in plants and animals including humans. Although evidences demonstrated its antioxidant, anticancer, hypolipidemic, and hepatoprotective and cardioprotective effects, its biological effects in cellular function might have been underestimated because of the water-insoluble property. To overcome this hydrophobicity, we synthesized new amphiphilic Sq derivative (HH-Sq). On the other hand, adipose-derived stem cells (ASCs) are a valuable source in regenerative medicine for its ease of accessibility and multilineage differentiation potential. Nevertheless, impaired cellular functions of ASCs derived from diabetic donor have still been debated controversially. In this study, we explored the effect of the HH-Sq in comparison to Sq on the adipocyte differentiation of ASCs obtained from subjects with type 2 diabetes. Gene expression profile by microarray analysis at 14 days of adipogenic differentiation revealed that HH-Sq induced more genes involved in intracellular signaling processes, whereas Sq activated more transmembrane receptor pathway-related genes. In addition, more important number of down-regulated and up-regulated genes by Sq and HH-Sq were not overlapped, suggesting the compounds might not only have difference in their chemical property but also potentially exert different biological effects. Both Sq and HH-Sq improved metabolism of adipocytes by enhancing genes associated with energy homeostasis and insulin sensitivity,
    Sprache Englisch
    Erscheinungsdatum 2020-11-04
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2737824-X
    ISSN 2296-634X
    ISSN 2296-634X
    DOI 10.3389/fcell.2020.577259
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Microalgae extract induces antidepressant-like activity via neuroinflammation regulation and enhances the neurotransmitter system.

    Sasaki, Kazunori / Linh, Tran Ngoc / Hirano, Atsushi / Tominaga, Kenichi / Nukaga, Sachiko / Nozaki, Hiroyuki / Arimura, Takashi / Isoda, Hiroko

    Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

    2022  Band 170, Seite(n) 113508

    Abstract: The increasing prevalence of mental disorders, such as depression, is currently a serious public health concern. Microalgae are a diverse group of organisms that contain many bioactive compounds such as polyunsaturated fatty acids and polyphenols. These ... ...

    Abstract The increasing prevalence of mental disorders, such as depression, is currently a serious public health concern. Microalgae are a diverse group of organisms that contain many bioactive compounds such as polyunsaturated fatty acids and polyphenols. These compounds can exhibit many health benefits such as antioxidative, anti-inflammatory, anticancer, and anti-obesity effects. In the present study, we focused on microalgal (Botryococcus terribilis) extract (ME) rich in Me-meijicoccene (MM), a novel compound. Our results showed that pretreatment of SH-SY5Y cells with ME and MM ameliorated dexamethasone (depression-causing substance)-induced cytotoxicity. The results of the tail suspension test (TST) indicated that ME (50 mg/kg) induced antidepressant-like activity in TST-stressed mice. Our microarray analysis revealed that ME upregulated neurotransmitter-related gene (neurotransmitter secretion) expression and downregulated neuroinflammatory-related gene (chemokine-mediated signaling) expression in the cerebral cortex. ME also induced an increase in neurotransmitter and brain-derived neurotrophic factor levels, and a decrease in corticosterone and pro-inflammatory cytokine levels in the serum, cerebral cortex, and hypothalamus. Altogether, our study is the first to report that 50 mg/kg ME (not 100 mg/kg) exerts antidepressant-like effects via regulating neuroinflammation and modulating neurotransmitter systems in the mouse brain, highlighting the prospects of ME in the treatment of depressive disorders of a psychosocial nature.
    Mesh-Begriff(e) Animals ; Humans ; Mice ; Microalgae/metabolism ; Depression/drug therapy ; Neuroinflammatory Diseases ; Neuroblastoma/metabolism ; Antidepressive Agents/pharmacology ; Brain-Derived Neurotrophic Factor/metabolism ; Plant Extracts/pharmacology ; Plant Extracts/metabolism ; Neurotransmitter Agents/metabolism ; Hippocampus ; Disease Models, Animal
    Chemische Substanzen Antidepressive Agents ; Brain-Derived Neurotrophic Factor ; Plant Extracts ; Neurotransmitter Agents
    Sprache Englisch
    Erscheinungsdatum 2022-11-04
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 782617-5
    ISSN 1873-6351 ; 0278-6915
    ISSN (online) 1873-6351
    ISSN 0278-6915
    DOI 10.1016/j.fct.2022.113508
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Electrochemically Switchable Molecular-Tweezers.

    Arimura, Takashi / Do, Jung-Hee / Tanaka, Fumiaki

    Journal of oleo science

    2017  Band 66, Heft 4, Seite(n) 419–423

    Abstract: Synthetic receptors possessing two complexing chromophores connected by a single spacer are referred to as molecular tweezers. We report an electrochemically triggered molecular tweezers, which is a calix[4]arene-bis-porphyrin conjugate, that acts as a ... ...

    Abstract Synthetic receptors possessing two complexing chromophores connected by a single spacer are referred to as molecular tweezers. We report an electrochemically triggered molecular tweezers, which is a calix[4]arene-bis-porphyrin conjugate, that acts as a proof-of-concept demonstration system showing an electro-statically induced approach to guest release. The electrochemical behavior represents that 1,4-diazabicyclo[2.2.2]octane (DABCO) is released from the complex formed between calix[4]arene-bis-porphyrin conjugate and DABCO, just after cooperative two-oxidation occurs at 0.41 V.
    Mesh-Begriff(e) Calixarenes/chemistry ; Electrochemical Techniques ; Macromolecular Substances/chemistry ; Molecular Structure ; Oxidation-Reduction ; Piperazines/chemistry ; Porphyrins/chemistry ; Receptors, Artificial/chemistry
    Chemische Substanzen Macromolecular Substances ; Piperazines ; Porphyrins ; Receptors, Artificial ; Calixarenes (130036-26-9) ; triethylenediamine (X8M57R0JS5)
    Sprache Englisch
    Erscheinungsdatum 2017
    Erscheinungsland Japan
    Dokumenttyp Journal Article
    ISSN 1347-3352
    ISSN (online) 1347-3352
    DOI 10.5650/jos.ess17027
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: A self-oscillating gel actuator driven by ferroin.

    Arimura, Takashi / Mukai, Masaru

    Chemical communications (Cambridge, England)

    2014  Band 50, Heft 44, Seite(n) 5861–5863

    Abstract: In the wake of the Belousov-Zhabotinsky reaction catalyzed by ferroin, the swelling-deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time. ...

    Abstract In the wake of the Belousov-Zhabotinsky reaction catalyzed by ferroin, the swelling-deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time.
    Sprache Englisch
    Erscheinungsdatum 2014-06-04
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c4cc01613k
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Synthesis of 2-(2-Hydroxyethoxy)-3-hydroxysqualene and Characterization of Its Anti-Inflammatory Effects.

    Sasaki, Kazunori / Inami, Yuri / Tominaga, Kenichi / Kigoshi, Hideo / Arimura, Takashi / Isoda, Hiroko

    BioMed research international

    2020  Band 2020, Seite(n) 9584567

    Abstract: Squalene (SQ), a natural precursor of many steroids, can inhibit tumor progression and decrease serum cholesterol levels. However, it is difficult to discern the effect of highly active molecules in the treatment of diseases because not enough active ... ...

    Abstract Squalene (SQ), a natural precursor of many steroids, can inhibit tumor progression and decrease serum cholesterol levels. However, it is difficult to discern the effect of highly active molecules in the treatment of diseases because not enough active compounds reach the site of pathology in crowded biosystems. Therefore, it is necessary to design artificial probes that work effectively within crowded systems. In this study, to facilitate cell penetration, the ethylene glycol moiety (used as a probe) was chemically added to SQ to form 2-(2-hydroxyethoxy)-3-hydroxysqualene (HEHSQ). HEHSQ was prepared from 2,3-epoxysqualene and characterized by R
    Mesh-Begriff(e) Animals ; Anti-Inflammatory Agents/chemical synthesis ; Anti-Inflammatory Agents/chemistry ; Anti-Inflammatory Agents/pharmacology ; Inflammation/chemically induced ; Inflammation/drug therapy ; Inflammation/metabolism ; Inflammation/pathology ; Lipopolysaccharides/toxicity ; Macrophages/metabolism ; Macrophages/pathology ; Mice ; RAW 264.7 Cells ; Squalene/analogs & derivatives ; Squalene/chemical synthesis ; Squalene/chemistry ; Squalene/pharmacology
    Chemische Substanzen Anti-Inflammatory Agents ; Lipopolysaccharides ; hydroxysqualene ; Squalene (7QWM220FJH)
    Sprache Englisch
    Erscheinungsdatum 2020-04-14
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2698540-8
    ISSN 2314-6141 ; 2314-6133
    ISSN (online) 2314-6141
    ISSN 2314-6133
    DOI 10.1155/2020/9584567
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel: A self-oscillating gel actuator driven by ferroin

    Arimura, Takashi / Mukai, Masaru

    Chemical communications. 2014 May 6, v. 50, no. 44

    2014  

    Abstract: In the wake of the Belousov–Zhabotinsky reaction catalyzed by ferroin, the swelling–deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time. ...

    Abstract In the wake of the Belousov–Zhabotinsky reaction catalyzed by ferroin, the swelling–deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time.
    Schlagwörter catalytic activity ; chemical compounds ; chemical reactions ; gels
    Sprache Englisch
    Erscheinungsverlauf 2014-0506
    Umfang p. 5861-5863.
    Erscheinungsort The Royal Society of Chemistry
    Dokumenttyp Artikel
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c4cc01613k
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel: Elucidation of the Potential Hair Growth-Promoting Effect of

    Oliva, Aprill Kee / Bejaoui, Meriem / Hirano, Atsushi / Arimura, Takashi / Linh, Tran Ngoc / Uchiage, Eriko / Nukaga, Sachiko / Tominaga, Kenichi / Nozaki, Hiroyuki / Isoda, Hiroko

    Biomedicines

    2022  Band 10, Heft 5

    Abstract: A person's quality of life can be adversely affected by hair loss. Microalgae are widely recognized for their abundance and rich functional components. Here, we evaluated the hair growth effect of a green alga, ...

    Abstract A person's quality of life can be adversely affected by hair loss. Microalgae are widely recognized for their abundance and rich functional components. Here, we evaluated the hair growth effect of a green alga,
    Sprache Englisch
    Erscheinungsdatum 2022-05-20
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2720867-9
    ISSN 2227-9059
    ISSN 2227-9059
    DOI 10.3390/biomedicines10051186
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Anisotropic Self-Oscillating Reaction in Liquid Crystalline Nanosheet Hydrogels.

    Shintate, Morio / Inadomi, Takumi / Yamamoto, Shinya / Kuboyama, Yusuke / Ohsedo, Yutaka / Arimura, Takashi / Nakazumi, Tomoka / Hara, Yusuke / Miyamoto, Nobuyoshi

    The journal of physical chemistry. B

    2018  Band 122, Heft 11, Seite(n) 2957–2961

    Abstract: Anisotropic chemical wave propagation of self-oscillating Belousov-Zhabotinsky (BZ) reaction was demonstrated in the poly( N-isopropylacrylamide) gel films embedded with macroscopically aligned liquid crystalline inorganic nanosheets. Although the ... ...

    Abstract Anisotropic chemical wave propagation of self-oscillating Belousov-Zhabotinsky (BZ) reaction was demonstrated in the poly( N-isopropylacrylamide) gel films embedded with macroscopically aligned liquid crystalline inorganic nanosheets. Although the average propagation rate of chemical wave v̅ was 3.56 mm min
    Sprache Englisch
    Erscheinungsdatum 2018--22
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.7b11631
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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