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  1. Article ; Online: Cancer-Related Unconventional Protein Secretion: A New Role of the Endoplasmic Reticulum.

    Yamada, Kohji / Yoshida, Kiyotsugu

    DNA and cell biology

    2023  Volume 42, Issue 5, Page(s) 225–228

    Abstract: Unconventional protein secretion (UPS) is a crucial mechanism controlling the localization of cytosolic proteins lacking signal peptides and is implicated in inflammation, neurodegenerative diseases, and cancer. Several previous studies on immune cells ... ...

    Abstract Unconventional protein secretion (UPS) is a crucial mechanism controlling the localization of cytosolic proteins lacking signal peptides and is implicated in inflammation, neurodegenerative diseases, and cancer. Several previous studies on immune cells have demonstrated the mechanisms of UPS. In cancer, the active secretion of several cytosolic proteins, including PKCδ and nucleolin, has been described. Moreover, we have recently demonstrated that extended synaptotagmin 1, one of the membrane proteins of the endoplasmic reticulum, plays a critical role in UPS in liver cancer cells. Importantly, UPS in cancer cells shows characteristics that are markedly different from those of the previously known UPS, and therefore, we categorize them as cancer-related UPS (CUPS). In this article, we provide an overview of UPS mechanisms and discuss the process that leads to the naming of cancer-specific UPS as CUPS.
    MeSH term(s) Secretory Pathway ; Endoplasmic Reticulum/metabolism ; Protein Transport ; Cell Membrane/metabolism ; Membrane Proteins/metabolism ; Neoplasms/metabolism
    Chemical Substances Membrane Proteins
    Language English
    Publishing date 2023-03-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1024454-2
    ISSN 1557-7430 ; 0198-0238 ; 1044-5498
    ISSN (online) 1557-7430
    ISSN 0198-0238 ; 1044-5498
    DOI 10.1089/dna.2023.0044
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Leakage? or Secretion? unconventional protein secretion in cancer.

    Yamada, Kohji / Yoshida, Kiyotsugu

    Oncotarget

    2023  Volume 14, Page(s) 146–147

    MeSH term(s) Humans ; Neoplasms ; Proteins
    Chemical Substances Proteins
    Language English
    Publishing date 2023-02-20
    Publishing country United States
    Document type Editorial ; Research Support, Non-U.S. Gov't
    ZDB-ID 2560162-3
    ISSN 1949-2553 ; 1949-2553
    ISSN (online) 1949-2553
    ISSN 1949-2553
    DOI 10.18632/oncotarget.28368
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Functional Roles of DYRK2 as a Tumor Regulator.

    Mochimaru, Yuta / Yoshida, Kiyotsugu

    Current issues in molecular biology

    2023  Volume 45, Issue 10, Page(s) 8539–8551

    Abstract: The dual-specificity tyrosine phosphorylation-regulated kinase 2 (DYRK2) regulates the induction of apoptosis and DNA repair, metastasis inhibition, cell cycle G1/S transition, protein scaffold stability for E3 ligase complexes, and embryogenesis. Owing ... ...

    Abstract The dual-specificity tyrosine phosphorylation-regulated kinase 2 (DYRK2) regulates the induction of apoptosis and DNA repair, metastasis inhibition, cell cycle G1/S transition, protein scaffold stability for E3 ligase complexes, and embryogenesis. Owing to these functions, DYRK2 is thought to regulate tumorigenesis, and its function in cancer has been investigated. Notably, DYRK2 has been reported to function as a tumor suppressor; however, it has also been reported to act as an oncogene in some cancers. This discrepancy makes it difficult to elucidate the conserved functions of DYRK2 in cancer. Here, we reviewed the functions of DYRK2 in various cancers. Patient tissue samples were evaluated for each cancer type. Although some studies have used cell lines and/or xenografts to elucidate the mechanism of DYRK2 function, these studies are not sufficient to understand the role of DYRK2 in cancers. In particular, studies using genetically modified mice would help us to understand the reported functional duality of DYRK2 in cancer.
    Language English
    Publishing date 2023-10-23
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2000024-8
    ISSN 1467-3045 ; 1467-3037
    ISSN (online) 1467-3045
    ISSN 1467-3037
    DOI 10.3390/cimb45100538
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The diverse functions of DYRK2 in response to cellular stress.

    Kawamura, Akira / Yoshida, Saishu / Yoshida, Kiyotsugu

    Histology and histopathology

    2024  , Page(s) 18744

    Abstract: To maintain microenvironmental and cellular homeostasis, cells respond to multiple stresses by activating characteristic cellular mechanisms consisting of receptors, signal transducers, and effectors. Dysfunction of these mechanisms can trigger multiple ... ...

    Abstract To maintain microenvironmental and cellular homeostasis, cells respond to multiple stresses by activating characteristic cellular mechanisms consisting of receptors, signal transducers, and effectors. Dysfunction of these mechanisms can trigger multiple human diseases as well as cancers. Dual-specificity tyrosine-regulated kinases (DYRKs) are members of the CMGC group and are evolutionarily conserved from yeast to mammals. Previous studies revealed that DYRK2 has important roles in the regulation of the cell cycle and survival in cancer cells. On the other hand, recent studies show that DYRK2 also exhibits significant functions in multiple cellular stress responses and in maintaining cellular homeostasis. Hence, the further elucidation of mechanisms underlying DYRK2's diverse responses to various stresses helps to promote the advancement of innovative clinical therapies and pharmacological drugs. This review summarizes the molecular mechanisms of DYRK2, particularly focusing on cellular stress responses.
    Language English
    Publishing date 2024-04-08
    Publishing country Spain
    Document type Journal Article ; Review
    ZDB-ID 83911-5
    ISSN 1699-5848 ; 0213-3911
    ISSN (online) 1699-5848
    ISSN 0213-3911
    DOI 10.14670/HH-18-744
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: New insights into the roles for DYRK family in mammalian development and congenital diseases.

    Yoshida, Saishu / Yoshida, Kiyotsugu

    Genes & diseases

    2022  Volume 10, Issue 3, Page(s) 758–770

    Abstract: The dual-specificity tyrosine-regulated kinase (DYRK) family is evolutionarily conserved from invertebrate to mammals. DYRKs regulate cell proliferation, apoptosis, survival, and differentiation by modifying the protein activation state, cellular ... ...

    Abstract The dual-specificity tyrosine-regulated kinase (DYRK) family is evolutionarily conserved from invertebrate to mammals. DYRKs regulate cell proliferation, apoptosis, survival, and differentiation by modifying the protein activation state, cellular localization, and turnover. In contrast to several studies in cellular models, the available evidence regarding the
    Language English
    Publishing date 2022-01-06
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2821806-1
    ISSN 2352-3042 ; 2352-3042
    ISSN (online) 2352-3042
    ISSN 2352-3042
    DOI 10.1016/j.gendis.2021.12.004
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  6. Article ; Online: Multiple subcellular localizations and functions of protein kinase Cδ in liver cancer.

    Yamada, Kohji / Yoshida, Kiyotsugu

    World journal of gastroenterology

    2021  Volume 28, Issue 2, Page(s) 188–198

    Abstract: Protein kinase Cδ (PKCδ) is a member of the PKC family, and its implications have been reported in various biological and cancerous processes, including cell proliferation, cell death, tumor suppression, and tumor progression. In liver cancer cells, ... ...

    Abstract Protein kinase Cδ (PKCδ) is a member of the PKC family, and its implications have been reported in various biological and cancerous processes, including cell proliferation, cell death, tumor suppression, and tumor progression. In liver cancer cells, accumulating reports show the bi-functional regulation of PKCδ in cell death and survival. PKCδ function is defined by various factors, such as phosphorylation, catalytic domain cleavage, and subcellular localization. PKCδ has multiple intracellular distribution patterns, ranging from the cytosol to the nucleus. We recently found a unique extracellular localization of PKCδ in liver cancer and its growth factor-like function in liver cancer cells. In this review, we first discuss the structural features of PKCδ and then focus on the functional diversity of PKCδ based on its subcellular localization, such as the nucleus, cell surface, and extracellular space. These findings improve our knowledge of PKCδ involvement in the progression of liver cancer.
    MeSH term(s) Cell Line ; Cell Nucleus/metabolism ; Humans ; Liver Neoplasms/metabolism ; Phosphorylation ; Protein Kinase C-delta/metabolism
    Chemical Substances Protein Kinase C-delta (EC 2.7.11.13)
    Language English
    Publishing date 2021-01-12
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2185929-2
    ISSN 2219-2840 ; 1007-9327
    ISSN (online) 2219-2840
    ISSN 1007-9327
    DOI 10.3748/wjg.v28.i2.188
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Dual-specificity tyrosine-regulated kinase 2 exerts anti-tumor effects by induction of G1 arrest in lung adenocarcinoma.

    Harada, Eriko / Yoshida, Saishu / Imaizumi, Yuta / Kawamura, Akira / Ohtsuka, Takashi / Yoshida, Kiyotsugu

    Biochimica et biophysica acta. General subjects

    2024  Volume 1868, Issue 6, Page(s) 130600

    Abstract: Objectives: Lung cancer is a leading cause of cancer-related mortality and remains one of the most poorly prognosed disease worldwide. Therefore, it is necessary to identify novel molecular markers with potential therapeutic effects. Recent findings ... ...

    Abstract Objectives: Lung cancer is a leading cause of cancer-related mortality and remains one of the most poorly prognosed disease worldwide. Therefore, it is necessary to identify novel molecular markers with potential therapeutic effects. Recent findings have suggested that dual-specificity tyrosine-regulated kinase 2 (DYRK2) plays a tumor suppressive role in colorectal, breast, and hepatic cancers; however, its effect and mechanism in lung cancer remain poorly understood. Therefore, this study aimed to investigate the tumor-suppressive role and molecular mechanism of DYRK2 in lung adenocarcinoma (LUAD) by in vitro experiments and xenograft models.
    Materials and methods: The evaluation of DYRK2 expression was carried out using lung cancer cell lines and normal bronchial epithelial cells. Overexpression of DYRK2 was induced by an adenovirus vector, and cell proliferation was assessed through MTS assay and Colony Formation Assay. Cell cycle analysis was performed using flow cytometry. Additionally, proliferative capacity was evaluated in a xenograft model by subcutaneously implanting A549 cells into SCID mice (C·B17/Icr-scidjcl-scid/scid).
    Results: Immunoblotting assays showed that DYRK2 was downregulated in most LUAD cell lines. DYRK2 overexpression using adenovirus vectors significantly suppressed cell proliferation compared with that in the control group. Additionally, DYRK2 overexpression suppressed tumor growth in a murine subcutaneous xenograft model. Mechanistically, DYRK2 overexpression inhibited the proliferation of LUAD cells via p21-mediated G1 arrest, which was contingent on p53.
    Conclusion: Taken together, these findings suggest that DYRK2 may serve as potential prognostic biomarker and therapeutic target for LUAD.
    MeSH term(s) Animals ; Humans ; Mice ; A549 Cells ; Adenocarcinoma of Lung/pathology ; Adenocarcinoma of Lung/metabolism ; Adenocarcinoma of Lung/genetics ; Cell Line, Tumor ; Cell Proliferation ; Dyrk Kinases ; G1 Phase Cell Cycle Checkpoints/genetics ; Gene Expression Regulation, Neoplastic ; Lung Neoplasms/pathology ; Lung Neoplasms/metabolism ; Lung Neoplasms/genetics ; Mice, SCID ; Protein Serine-Threonine Kinases/metabolism ; Protein Serine-Threonine Kinases/genetics ; Protein-Tyrosine Kinases/metabolism ; Protein-Tyrosine Kinases/genetics ; Xenograft Model Antitumor Assays
    Chemical Substances Dyrk Kinases (EC 2.7.1.-) ; Protein Serine-Threonine Kinases (EC 2.7.11.1) ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; DYRK2 protein, human
    Language English
    Publishing date 2024-03-18
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 60-7
    ISSN 1872-8006 ; 1879-2596 ; 1879-260X ; 1879-2642 ; 1879-2618 ; 1879-2650 ; 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    ISSN (online) 1872-8006 ; 1879-2596 ; 1879-260X ; 1879-2642 ; 1879-2618 ; 1879-2650
    ISSN 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    DOI 10.1016/j.bbagen.2024.130600
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  8. Article ; Online: Enforced dual-specificity tyrosine-regulated kinase 2 expression by adenovirus-mediated gene transfer inhibits tumor growth and metastasis of colorectal cancer.

    Imaizumi, Yuta / Yoshida, Saishu / Kanegae, Yumi / Eto, Ken / Yoshida, Kiyotsugu

    Cancer science

    2022  Volume 113, Issue 3, Page(s) 960–970

    Abstract: Colorectal cancer is one of the most common gastrointestinal tumors with good outcomes; however, with distant metastasis, the outcomes are poor. Novel treatment methods are urgently needed. Our in vitro studies indicate that dual-specificity tyrosine- ... ...

    Abstract Colorectal cancer is one of the most common gastrointestinal tumors with good outcomes; however, with distant metastasis, the outcomes are poor. Novel treatment methods are urgently needed. Our in vitro studies indicate that dual-specificity tyrosine-regulated kinase 2 (DYRK2) functions as a tumor suppressor in colorectal cancer by regulating cell survival, proliferation, and apoptosis induction. In addition, DYRK2 expression is decreased in tumor tissues compared to nontumor tissues in colorectal cancer, indicating a correlation with clinical prognosis. In this context, we devised a novel therapeutic strategy to overexpress DYRK2 in tumors by adenovirus-mediated gene transfer. The present study shows that overexpression of DYRK2 in colon cancer cell lines by adenovirus inhibits cell proliferation and induces apoptosis in vitro. Furthermore, in mouse subcutaneous xenograft and liver metastasis models, enforced expression of DYRK2 by direct or intravenous injection of adenovirus to the tumor significantly inhibits tumor growth. Taken together, these findings show that adenovirus-based overexpression of DYRK2 could be a novel gene therapy for liver metastasis of colorectal cancer.
    MeSH term(s) Adenoviridae/genetics ; Animals ; Apoptosis/genetics ; Cell Line, Tumor ; Cell Proliferation/genetics ; Colorectal Neoplasms/genetics ; Colorectal Neoplasms/pathology ; Colorectal Neoplasms/therapy ; Genetic Therapy/methods ; Genetic Vectors ; Humans ; Liver Neoplasms/genetics ; Liver Neoplasms/secondary ; Liver Neoplasms/therapy ; Mice ; Protein Serine-Threonine Kinases/genetics ; Protein-Tyrosine Kinases/genetics ; Tumor Suppressor Proteins/genetics ; Xenograft Model Antitumor Assays ; Dyrk Kinases
    Chemical Substances Tumor Suppressor Proteins ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; Protein Serine-Threonine Kinases (EC 2.7.11.1)
    Language English
    Publishing date 2022-01-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2115647-5
    ISSN 1349-7006 ; 1349-7006
    ISSN (online) 1349-7006
    ISSN 1349-7006
    DOI 10.1111/cas.15247
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  9. Article ; Online: Mechanical insights into the regulation of programmed cell death by p53 via mitochondria.

    Yamada, Kohji / Yoshida, Kiyotsugu

    Biochimica et biophysica acta. Molecular cell research

    2019  Volume 1866, Issue 5, Page(s) 839–848

    Abstract: All organisms end with their death, and many parts of cells die through intrinsic suicide machineries in response to diverse stimuli. These intrinsic cell death pathways are often termed as programmed cell deaths (PCDs), and are critical for organism ... ...

    Abstract All organisms end with their death, and many parts of cells die through intrinsic suicide machineries in response to diverse stimuli. These intrinsic cell death pathways are often termed as programmed cell deaths (PCDs), and are critical for organism development, tissue homeostasis and various diseases. Recent evidence has revealed that most of PCDs involve a tumor suppressor p53 and components of the intra-mitochondria. Furthermore, the movement and positioning of p53 in cells affect the induction of each PCD pathway. Here we provide a comprehensive review on p53-related PCD mechanisms via the mitochondria, namely classical apoptosis, non-classical apoptosis, autophagic cell death, ferroptosis, necroptosis. In addition, we discuss the roles of p53 in each PCD pathway by focusing its altered intracellular localization in response to diverse cellular stresses.
    MeSH term(s) Animals ; Apoptosis ; Autophagy ; Humans ; Mitochondria/genetics ; Mitochondria/metabolism ; Signal Transduction ; Tumor Suppressor Protein p53/genetics ; Tumor Suppressor Protein p53/metabolism
    Chemical Substances Tumor Suppressor Protein p53
    Language English
    Publishing date 2019-02-18
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 60-7
    ISSN 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 ; 1879-2650 ; 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    ISSN (online) 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 ; 1879-2650
    ISSN 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    DOI 10.1016/j.bbamcr.2019.02.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Multiple functions of DYRK2 in cancer and tissue development.

    Yoshida, Saishu / Yoshida, Kiyotsugu

    FEBS letters

    2019  Volume 593, Issue 21, Page(s) 2953–2965

    Abstract: Dual-specificity tyrosine-regulated kinases (DYRKs) are evolutionarily conserved from yeast to mammals. Accumulating studies have revealed that DYRKs have important roles in regulation of the cell cycle and survival. DYRK2, a member of the class II DYRK ... ...

    Abstract Dual-specificity tyrosine-regulated kinases (DYRKs) are evolutionarily conserved from yeast to mammals. Accumulating studies have revealed that DYRKs have important roles in regulation of the cell cycle and survival. DYRK2, a member of the class II DYRK family protein, is a key regulator of p53, and phosphorylates it at Ser46 to induce apoptosis in response to DNA damage. Moreover, recent studies have uncovered that DYRK2 regulates G1/S transition, epithelial-mesenchymal-transition, and stemness in human cancer cells. DYRK2 also appears to have roles in tissue development in lower eukaryotes. Thus, the elucidation of mechanisms for DYRK2 during mammalian tissue development will promote the understanding of cell differentiation, tissue homeostasis, and congenital diseases as well as cancer. In this review, we discuss the roles of DYRK2 in tumor cells. Moreover, we focus on DYRK2-dependent developmental mechanisms in several species including fly (Drosophila), worm (Caenorhabditis elegans), zebrafish (Danio rerio), and mammals.
    MeSH term(s) Animals ; Apoptosis ; Cell Proliferation ; DNA Damage ; Epithelial-Mesenchymal Transition ; Gene Expression Regulation, Neoplastic ; Humans ; Neoplasms/genetics ; Neoplasms/metabolism ; Neoplastic Stem Cells/metabolism ; Protein Serine-Threonine Kinases/metabolism ; Protein-Tyrosine Kinases/metabolism ; Dyrk Kinases
    Chemical Substances Protein-Tyrosine Kinases (EC 2.7.10.1) ; Protein Serine-Threonine Kinases (EC 2.7.11.1)
    Language English
    Publishing date 2019-09-18
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 212746-5
    ISSN 1873-3468 ; 0014-5793
    ISSN (online) 1873-3468
    ISSN 0014-5793
    DOI 10.1002/1873-3468.13601
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