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  1. Article ; Online: Studies on Ergothioneine. IX. Ergothioneine Stimulates Mouse Spermatozoa and Fertilization in vitro: (ergothioneine/fertilization/acrosome reaction/sperm penetration).

    Mayumi, Tadanori / Kawano, Hiroko / Kawai, Yuichi / Hama, Takao

    Development, growth & differentiation

    2023  Volume 26, Issue 6, Page(s) 563–569

    Abstract: The effects of ergothioneine on spermatozoa and ova were investigated in vitro and in vivo. Spermatozoa were treated with ergothioneine in vitro, and injected into the uterine cavity of female mice immediately after the induction of superovulation. The ... ...

    Abstract The effects of ergothioneine on spermatozoa and ova were investigated in vitro and in vivo. Spermatozoa were treated with ergothioneine in vitro, and injected into the uterine cavity of female mice immediately after the induction of superovulation. The ova were recovered 24 hr later and assessed for fertilization. Preincubation of spermatozoa with ergothioneine resulted in a significant increase in the fertilization rate. When ova were inseminated in the same manner in vitro with spermatozoa treated with 0.1 or 1.0 mM of ergothioneine, the penetration rate was significantly increased. These results suggest that ergothioneine is effective in inducing both capacitation and the acrosome reaction of mouse spermatozoa. Ergothioneine at concentrations of 0.1 and 1.0 mM in the preincubation medium was also effective in inducing the acrosome reaction of guinea pig spermatozoa. However, it had no significant effect on the development of 2-cell ova in vitro.
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1984.00563.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: [DDS and Me].

    Mayumi, Tadanori

    Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan

    2004  Volume 124, Issue 7, Page(s) 397–415

    Abstract: With the success of the human genome project, the focus of life science research has shifted to the functional and structural analyses of proteins, such as proteomics and structural genomics. These analyses of proteins including newly identified proteins ...

    Abstract With the success of the human genome project, the focus of life science research has shifted to the functional and structural analyses of proteins, such as proteomics and structural genomics. These analyses of proteins including newly identified proteins are expected to contribute to the identification of therapeutically applicable proteins for various diseases. Thus, pharmaco-proteomic-based drug discovery and development for protein therapies, including gene therapy, cell therapy, and vaccine therapy, is attracting current attention. However, there is clinical difficulty in using almost all bioactive proteins, because of their very low stability and pleiotropic actions in vivo. To promote pharmaco-proteomic-based drug discovery and development, we have attempted to develop drug delivery systems (DDSs), such as the protein-drug innovation system and the optimal cell therapeutic system. In this review, we introduce our original DDSs.
    MeSH term(s) Animals ; Cell- and Tissue-Based Therapy ; Directed Molecular Evolution ; Drug Delivery Systems ; Genetic Therapy ; Humans ; Nanotechnology ; Proteomics ; Vaccines
    Chemical Substances Vaccines
    Language Japanese
    Publishing date 2004-06-14
    Publishing country Japan
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 200514-1
    ISSN 1347-5231 ; 0031-6903 ; 0372-7750 ; 0919-2085 ; 0919-2131
    ISSN (online) 1347-5231
    ISSN 0031-6903 ; 0372-7750 ; 0919-2085 ; 0919-2131
    DOI 10.1248/yakushi.124.397
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Development of novel technology of DDS for gene therapy.

    Nakagawa, Shinsaku / Mayumi, Tadanori

    Drug metabolism and pharmacokinetics

    2004  Volume 18, Issue 4, Page(s) 223–229

    Abstract: In the near future, not only "systemic pharmacokinetics" but also "intracellular pharmacokinetics" seems to be important in Drug Delivery System (DDS) research for gene therapy. Beyond the basic philosophy of DDS of "delivering the optimal amounts of ... ...

    Abstract In the near future, not only "systemic pharmacokinetics" but also "intracellular pharmacokinetics" seems to be important in Drug Delivery System (DDS) research for gene therapy. Beyond the basic philosophy of DDS of "delivering the optimal amounts of drugs to a target site", it is now necessary to "express the gene (as a drug) efficiently in a target cell for a required period" in gene therapy. To achieve these objectives, vectors for introducing the gene into the target cell are being improved, and techniques to efficiently express the transgene and to regulate the transgene expression are being developed. DDS is expected to play a large part in achieving this goal. Here, we review a novel DDS technology to satisfy these criteria.
    Language English
    Publishing date 2004-12-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 2095748-8
    ISSN 1347-4367 ; 0916-1139
    ISSN 1347-4367 ; 0916-1139
    DOI 10.2133/dmpk.18.223
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: [Creation of functional muteins using phage display system results in a novel PEGylation system].

    Tsutsumi, Yasuo / Mayumi, Tadanori

    Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme

    2003  Volume 48, Issue 11 Suppl, Page(s) 1519–1526

    MeSH term(s) Drug Delivery Systems ; Drug Design ; Humans ; Macromolecular Substances ; Peptide Library ; Polyethylene Glycols ; Protein Binding ; Proteins ; Proteome ; Tumor Necrosis Factor-alpha
    Chemical Substances Macromolecular Substances ; Peptide Library ; Proteins ; Proteome ; Tumor Necrosis Factor-alpha ; Polyethylene Glycols (30IQX730WE)
    Language Japanese
    Publishing date 2003-08
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 391163-9
    ISSN 0039-9450
    ISSN 0039-9450
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Immune cell recruitment and cell-based system for cancer therapy.

    Gao, Jian-Qing / Okada, Naoki / Mayumi, Tadanori / Nakagawa, Shinsaku

    Pharmaceutical research

    2008  Volume 25, Issue 4, Page(s) 752–768

    Abstract: Immune cells, such as cytotoxic T lymphocytes, natural killer cells, B cells, and dendritic cells, have a central role in cancer immunotherapy. Conventional studies of cancer immunotherapy have focused mainly on the search for an efficient means to prime/ ...

    Abstract Immune cells, such as cytotoxic T lymphocytes, natural killer cells, B cells, and dendritic cells, have a central role in cancer immunotherapy. Conventional studies of cancer immunotherapy have focused mainly on the search for an efficient means to prime/activate tumor-associated antigen-specific immunity. A systematic understanding of the molecular basis of the trafficking and biodistribution of immune cells, however, is important for the development of more efficacious cancer immunotherapies. It is well established that the basis and premise of immunotherapy is the accumulation of effective immune cells in tumor tissues. Therefore, it is crucial to control the distribution of immune cells to optimize cancer immunotherapy. Recent characterization of various chemokines and chemokine receptors in the immune system has increased our knowledge of the regulatory mechanisms of the immune response and tolerance based on immune cell localization. Here, we review the immune cell recruitment and cell-based systems that can potentially control the systemic pharmacokinetics of immune cells and, in particular, focus on cell migrating molecules, i.e., chemokines, and their receptors, and their use in cancer immunotherapy.
    MeSH term(s) Adoptive Transfer/adverse effects ; Animals ; Chemokines/genetics ; Chemokines/metabolism ; Chemotaxis ; Dendritic Cells/immunology ; Dendritic Cells/transplantation ; Genetic Therapy/adverse effects ; Genetic Vectors ; Humans ; Immunity, Cellular ; Immunotherapy/adverse effects ; Immunotherapy/methods ; Immunotherapy/trends ; Neoplasm Metastasis ; Neoplasms/genetics ; Neoplasms/immunology ; Neoplasms/pathology ; Neoplasms/therapy ; Neovascularization, Pathologic/immunology ; Receptors, Chemokine/metabolism ; Treatment Outcome
    Chemical Substances Chemokines ; Receptors, Chemokine
    Language English
    Publishing date 2008-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 843063-9
    ISSN 1573-904X ; 0724-8741 ; 0739-0742
    ISSN (online) 1573-904X
    ISSN 0724-8741 ; 0739-0742
    DOI 10.1007/s11095-007-9443-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Development of novel drug delivery system (DDS) technologies for proteomic-based drug development.

    Shibata, Hiroko / Nakagawa, Shinsaku / Mayumi, Tadanori / Tsutsumi, Yasuo

    Biological & pharmaceutical bulletin

    2004  Volume 27, Issue 10, Page(s) 1483–1488

    Abstract: With the success of human genome projects, the focus of life science research has shifted to the functional and structural analyses of proteins, such as disease proteomics. These structural and functional analyses of expressed proteins in the cells and/ ... ...

    Abstract With the success of human genome projects, the focus of life science research has shifted to the functional and structural analyses of proteins, such as disease proteomics. These structural and functional analyses of expressed proteins in the cells and/or tissues are expected to contribute to the identification of therapeutically applicable proteins for various diseases. Thus, pharmaco-proteomic based drug development for protein therapies is most noticed currently. However, there is a clinical difficulty to use almost bioactive proteins, because of their very low stability and pleiotropic actions in vivo. To promote pharmaco-proteomic based drug development for protein therapies to various diseases, we have attempted to establish a system for creating functional mutant proteins (muteins) with desired properties, and to develop a site-specific polymer-conjugation system for further improving the therapeutic potency of proteins. In this review, we are introducing our original protein-drug innovation systems mentioned above.
    MeSH term(s) Animals ; Drug Delivery Systems/methods ; Drug Design ; Proteomics
    Language English
    Publishing date 2004-10
    Publishing country Japan
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1150271-x
    ISSN 1347-5215 ; 0918-6158
    ISSN (online) 1347-5215
    ISSN 0918-6158
    DOI 10.1248/bpb.27.1483
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: [PPARgamma-gene therapy using an adenovirus vector for inflammatory bowel disease].

    Nakajima, Atsushi / Katayama, Kazufumi / Mayumi, Tadanori

    Nihon yakurigaku zasshi. Folia pharmacologica Japonica

    2003  Volume 122, Issue 4, Page(s) 309–316

    Abstract: Peroxisome proliferator-activated receptor gamma (PPARgamma) is one of the nuclear receptors that plays a central role in adipocyte differentiation and insulin sensitivity. Recently, PPARgamma has also been recognized as a suppressive regulator of ... ...

    Abstract Peroxisome proliferator-activated receptor gamma (PPARgamma) is one of the nuclear receptors that plays a central role in adipocyte differentiation and insulin sensitivity. Recently, PPARgamma has also been recognized as a suppressive regulator of inflammation in the gastrointestinal tract. We summarize here the therapeutic benefits of PPARgamma-gene therapy using a replication-deficient adenovirus vector expressing PPARgamma (AdRGD-PPARgamma). We demonstrate that PPARgamma- protein levels are decreased in dextran sodium sulfate-induced colitis and restored in this model by intraperitoneal administration of the AdRGD-PPARgamma. Treatment with AdRGD-PPARgamma and PPARgamma-specific ligands resulted in a marked amelioration of tissue inflammation associated with the colitis, including reduction in intercellular adhesion molecule-1, cyclooxygenase-2, and tumor necrosis factor-alpha expression. Our results suggest that gene delivery of PPARgamma may open up a novel therapeutic approach for inflammatory bowel diseases such as Crohn's disease and ulcerative colitis.
    MeSH term(s) Adenoviridae/genetics ; Animals ; Colitis/therapy ; Genetic Therapy/methods ; Genetic Vectors ; Inflammatory Bowel Diseases/therapy ; Mice ; Receptors, Cytoplasmic and Nuclear/genetics ; Transcription Factors/genetics
    Chemical Substances Receptors, Cytoplasmic and Nuclear ; Transcription Factors
    Language Japanese
    Publishing date 2003-09-01
    Publishing country Japan
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 1097532-9
    ISSN 1347-8397 ; 0015-5691
    ISSN (online) 1347-8397
    ISSN 0015-5691
    DOI 10.1254/fpj.122.309
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Recent progress on tumor missile therapy and tumor vascular targeting therapy as a new approach.

    Yoshioka, Yasuo / Tsutsumi, Yasuo / Nakagawa, Shinsaku / Mayumi, Tadanori

    Current vascular pharmacology

    2003  Volume 2, Issue 3, Page(s) 259–270

    Abstract: Tumor targeting therapy, that is "Missile therapy", using a complex composed of a tumor suppressive drug and a whole antibody against tumor cells, is expected to become an attractive chemotherapy strategy. However, clinically convincing results have not ... ...

    Abstract Tumor targeting therapy, that is "Missile therapy", using a complex composed of a tumor suppressive drug and a whole antibody against tumor cells, is expected to become an attractive chemotherapy strategy. However, clinically convincing results have not yet been obtained mainly due to poor transport from the circulation to tumor tissue and marked toxicity. Recently, recombinant immunotoxins, composed of an Fv fragment of an antibody to a tumor-related antigen fused to various truncated toxins have been developed to overcome the distribution of immunotoxins in tumors. These recombinant immunotoxins have shown encouraging clinical results for some hematopoietic malignancies. However, there were no significant anti-tumor responses to many tumors, especially solid tumors, probably due to their rapid clearance from the circulation and their immunogenicity and antigenicity. More recently, PEGylation of recombinant immunotoxins has been attempted to overcome these drawbacks. It was found that PEGylation of recombinant immunotoxins improves their effectiveness. We discuss the recent progress in tumor missile therapy. In contrast to others, we developed "Missile therapy against tumor blood vessels" by using specific monoclonal antibodies against tumor endothelial cells rather than actual tumor cells. The complex between antibodies to tumor vascular endothelial cells and anti-tumor drugs can freely access the target cells without concern for their vascular permeability. These preparations have exhibited excellent anti-tumor effects for solid tumors. In this review, we also discuss this vascular targeting therapy as an attractive new strategy for tumor chemotherapy.
    MeSH term(s) Animals ; Antibodies, Monoclonal/therapeutic use ; Endothelial Cells/physiology ; Humans ; Immunoconjugates/therapeutic use ; Immunotoxins/therapeutic use ; Interleukin-6/therapeutic use ; Neoplasms/blood supply ; Neoplasms/therapy ; Polyethylene Glycols/therapeutic use ; Recombinant Proteins/therapeutic use ; Zinostatin/administration & dosage
    Chemical Substances Antibodies, Monoclonal ; Immunoconjugates ; Immunotoxins ; Interleukin-6 ; Recombinant Proteins ; Polyethylene Glycols (3WJQ0SDW1A) ; Zinostatin (9014-02-2)
    Language English
    Publishing date 2003-12-15
    Publishing country United Arab Emirates
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2192362-0
    ISSN 1570-1611
    ISSN 1570-1611
    DOI 10.2174/1570161043385682
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Molecular design of bioconjugated cell adhesion peptide with a water-soluble polymeric modifier for enhancement of antimetastatic effect.

    Yamamoto, Yoko / Tsutsumi, Yasuo / Mayumi, Tadanori

    Current drug targets

    2002  Volume 3, Issue 2, Page(s) 123–130

    Abstract: The adhesive interaction of tumor cells with various components of the extracellular matrix (ECM), such as laminin and fibronectin appears to play a crucial role in tumor metastasis. It has been reported that adhesive peptides, such as Tyr-Ile-Gly-Ser- ... ...

    Abstract The adhesive interaction of tumor cells with various components of the extracellular matrix (ECM), such as laminin and fibronectin appears to play a crucial role in tumor metastasis. It has been reported that adhesive peptides, such as Tyr-Ile-Gly-Ser-Arg (YIGSR) in laminin and Arg-Gly-Asp (RGD), inhibited adhesion and invasion of various tumor cells to ECM in vitro, and exhibited inhibitory effects on pulmonary metastasis of B16-BL6 melanoma cells in mice. However, large doses of these peptides were required for significant anti-metastatic effects in vivo, probably due to their rapid degradation by various peptidases and their rapid excretion from the blood into the urine. To overcome these problems, the development of an appropriate drug delivery system (DDS) is required to improve in vivo stability and prolong plasma half-lives. Several strategies such as peptide-cyclization and D-amino acid substation have been reported to improve stability in blood by inhibiting enzymatic degradation. However, even these approaches have proven insufficient to overcome rapid renal clearance from the circulation. On the other hand, bioconjugation with water-soluble polymeric modifiers could markedly prolong the plasma half-lives by not only increasing peptidase resistance but also impeding renal excretion. In addition, it is possible to strictly control the in vivo pharmacokinetics of a peptide by introducing functional molecules with targeting or slow release capacities to the polymeric modifier. In this review we demonstrate with reference to our recent studies that bioconjugation of adhesive peptides with the appropriate polymeric modifier can enhance antimetastatic activity and may facilitate therapeutic use.
    MeSH term(s) Animals ; Antineoplastic Agents/administration & dosage ; Antineoplastic Agents/chemical synthesis ; Antineoplastic Agents/chemistry ; Cell Adhesion Molecules/administration & dosage ; Cell Adhesion Molecules/chemical synthesis ; Cell Adhesion Molecules/chemistry ; Drug Delivery Systems/methods ; Humans ; Neoplasm Metastasis/prevention & control ; Peptide Biosynthesis ; Polymers/administration & dosage ; Polymers/chemical synthesis ; Polymers/chemistry ; Solubility ; Water/chemistry
    Chemical Substances Antineoplastic Agents ; Cell Adhesion Molecules ; Polymers ; Water (059QF0KO0R)
    Language English
    Publishing date 2002-04
    Publishing country United Arab Emirates
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2064859-5
    ISSN 1873-5592 ; 1389-4501
    ISSN (online) 1873-5592
    ISSN 1389-4501
    DOI 10.2174/1389450024605427
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Nuclear receptors as targets for drug development: the role of nuclear receptors during neural stem cell proliferation and differentiation.

    Katayama, Kazufumi / Wada, Koichiro / Nakajima, Atsushi / Kamisaki, Yoshinori / Mayumi, Tadanori

    Journal of pharmacological sciences

    2005  Volume 97, Issue 2, Page(s) 171–176

    Abstract: The fate of stem cells, such as neural stem cells and hematopoietic stem cells, depends on strictly regulated signaling events including activation of nuclear receptors, resulting in subsequent gene induction. Recently, we demonstrated that PPARgamma, a ... ...

    Abstract The fate of stem cells, such as neural stem cells and hematopoietic stem cells, depends on strictly regulated signaling events including activation of nuclear receptors, resulting in subsequent gene induction. Recently, we demonstrated that PPARgamma, a ligand-activated nuclear receptor, plays an important role in regulating the proliferation and differentiation of murine neural stem cell (NSC). NSC prepared from heterozygous PPARgamma-deficient mouse exhibited a slower growth rate compared with that of wild-type mouse, which was also demonstrated in PPARgamma-knockdown NSC that was generated by the lentiviral-vector-mediated RNA interference approach. These studies have important implications for understanding central nervous system functions and developing a therapy for neurodegenerative disorders. In this review, recent findings on stem cell biology, especially focusing on nuclear receptors in NSCs, including our current study, will be discussed.
    MeSH term(s) Animals ; Cell Differentiation/drug effects ; Cell Differentiation/physiology ; Cell Proliferation/drug effects ; Drug Delivery Systems/methods ; Humans ; Neurons/cytology ; Neurons/drug effects ; Neurons/physiology ; Pharmaceutical Preparations/administration & dosage ; Pharmaceutical Preparations/metabolism ; Receptors, Cytoplasmic and Nuclear/physiology ; Stem Cells/cytology ; Stem Cells/drug effects ; Stem Cells/physiology
    Chemical Substances Pharmaceutical Preparations ; Receptors, Cytoplasmic and Nuclear
    Language English
    Publishing date 2005-02-11
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 2104264-0
    ISSN 1347-8648 ; 1347-8613
    ISSN (online) 1347-8648
    ISSN 1347-8613
    DOI 10.1254/jphs.fmj04008x3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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