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  1. Article

    Open Access

    Prognostic impact of soluble PD-L1 derived from tumor-associated macrophages in non-small-cell lung cancer

    Programmed cell death-ligand 1 (PD-L1) on tumor cells can be degraded to soluble form (sPD-L1) and enter circulation, however, the clinical significances of sPD-L1 in peripheral blood remains to be elucidated ...

    Koji Teramoto, Tomoyuki Igarashi, Yoko Kataoka in Cancer Immunology, Immunotherapy (2023)

  2. Article

    Open Access

    Oncogenic epidermal growth factor receptor signal-induced histone deacetylation suppresses chemokine gene expression in human lung adenocarcinoma

    Epidermal growth factor receptor (EGFR)-mutated (mt) lung adenocarcinoma (LA) is refractory to immune checkpoint inhibitors (ICIs). However, the mechanisms have not been fully elucidated. CD8+ T cell infiltration...

    Hidetoshi Sumimoto, Atsushi Takano, Tomoyuki Igarashi, Jun Hanaoka in Scientific Reports (2023)

  3. No Access

    Article

    Biphasic prognostic significance of PD-L1 expression status in patients with early- and locally advanced-stage non-small cell lung cancer

    Programmed cell death-ligand 1 (PD-L1) expression on tumor cells is induced by interferon-gamma, suggesting the induction of an anti-tumor immune response. In turn, binding of PD-L1 to programmed cell death 1 ...

    Koji Teramoto, Tomoyuki Igarashi, Yoko Kataoka in Cancer Immunology, Immunotherapy (2021)

  4. No Access

    Chapter

    Roles of Signaling Pathways in Cancer Cells and Immune Cells in Generation of Immunosuppressive Tumor-Associated Microenvironments

    Cancer cells trigger multiple immunosuppressive cascades and generate immunosuppressive tumor-associated microenvironments including tumor and sentinel lymph nodes. Constitutive activation of various signaling...

    Yutaka Kawakami, Tomonori Yaguchi, Hidetoshi Sumimoto in The Tumor Immunoenvironment (2013)

  5. Article

    Suppression of myeloid cell leukemia-1 (Mcl-1) enhances chemotherapy-associated apoptosis in gastric cancer cells

    Myeloid cell leukemia-1 (Mcl-1) is an anti-apoptotic protein that regulates apoptosis sensitivity in a variety of cell types. Here we evaluate the roles of Mcl-1 in chemotherapy-associated apoptosis in gastric...

    Hideko Akagi, Hajime Higuchi, Hidetoshi Sumimoto, Toru Igarashi in Gastric Cancer (2013)

  6. No Access

    Article

    The mechanisms of cancer immunoescape and development of overcoming strategies

    Cancer-induced immunosuppression is a major problem as it reduces the anti-tumor effects of immunotherapies. In cancer tissues, cancer cells, immune cells, and other stromal cells interact and create an immuno...

    Tomonori Yaguchi, Hidetoshi Sumimoto in International Journal of Hematology (2011)

  7. No Access

    Protocol

    The RNA Silencing Technology Applied by Lentiviral Vectors in Oncology

    Since the discovery of RNA interference (RNAi) in Caenorhabditis elegans in 1998, this mechanism has been found to be conserved in a wide variety of species, including insects, plants, and mammals. In mammals, sm...

    Hidetoshi Sumimoto, Yutaka Kawakami in Lentivirus Gene Engineering Protocols (2010)

  8. No Access

    Article

    Immunological detection of altered signaling molecules involved in melanoma development

    To understand immune responses to human cancer and develop more effective immunotherapy, human tumor antigens has been isolated using various immunological methods with tumor reactive T cells or antibodies obt...

    Yutaka Kawakami, Hidetoshi Sumimoto, Tomonobu Fujita in Cancer and Metastasis Reviews (2005)

  9. No Access

    Article

    Inhibition of growth and invasive ability of melanoma by inactivation of mutated BRAF with lentivirus-mediated RNA interference

    Oncogenic mutations of molecules involved in the mitogen-activated protein kinase (MAPK) pathways provide signals mediating both tumor growth and invasion in various cancers including melanomas. BRAF somatic m...

    Hidetoshi Sumimoto, Makoto Miyagishi, Hiroyuki Miyoshi, Shizuko Yamagata in Oncogene (2004)

  10. No Access

    Chapter and Conference Paper

    Common Marmoset as a New Preclinical Animal Model for Human Gene Therapy of Hematological Disorders

    For the purpose of secured and effective introduction of gene therapeutic approaches to human hematological disorders, we have been focusing on the common marmoset, a small non-human primates as a target precl...

    Kenzaburo Tani, Hitoshi Hibino, Kenji Ikebuchi in Bone Marrow Transplantation (1996)