Shogo Ehata 교수

Transforming growth factor (TGF)-beta signaling has been shown to promote tumor growth and metastasis in advanced cancer. Use of inhibitors of TGF-beta signaling may thus be a novel strategy for treatment of patients with such cancers. In this study, we investigated the effects of a novel TGF-beta type I receptor (TbetaR-I) kinase inhibitor, Ki26894, on bone metastasis of a highly bone-metastatic variant of human breast cancer MDA-MB-231 cells, termed MDA-MB-231-5a-D (MDA-231-D). Ki26894 blocked

Poor prognoses for colorectal cancer patients with metastatic lesions have driven demand for the development of novel targeted therapies. Here, we demonstrate that expression of bone morphogenetic protein 4 (BMP-4) is universally upregulated in human colorectal cancer cells and tissues, resulting in activated BMP signaling. Inhibition of endogenous BMP signaling by the BMP type I receptor inhibitor LDN-193189 elevated expression of the phosphatase DUSP5 in colorectal cancer cells, inducing apopt

Transforming growth factor-beta (TGF-beta) signaling facilitates tumor growth and metastasis in advanced cancer. In the present study, we identified differentially expressed in chondrocytes 1 (DEC1, also known as SHARP2 and Stra13) as a downstream target of TGF-beta signaling, which promotes the survival of breast cancer cells. In the mouse mammary carcinoma cell lines JygMC(A) and 4T1, the TGF-beta type I receptor kinase inhibitors A-44-03 and SB431542 induced apoptosis of cells under serum-fre

Bone morphogenetic proteins (BMPs), members of the transforming growth factor-β (TGF-β) family, are multifunctional cytokines. BMPs have a broad range of functions, and abnormalities in BMP signaling pathways are involved in cancer progression. BMPs activate the proliferation of certain cancer cells. Malignant phenotypes of cancer cells, such as increased motility, invasiveness, and stemness, are enhanced by BMPs. Simultaneously, BMPs act on various cellular components and regulate angiogenesis

Bone morphogenetic proteins (BMPs) are multi-functional cytokines, which belong to the transforming growth factor-β (TGF-β) family. In some cancer tissues, aberrant expression of various BMP signal components has been detected. Here, we describe the divergent roles of BMPs during the progression of cancer. BMPs exhibit various effects on both cancer cells and on tumor microenvironments. BMPs inhibit the proliferation of cancer cells, with some exceptions. BMPs also induce the differentiation of

Functional interactions between cancer cells and the bone microenvironment contribute to the development of bone metastasis. Although the bone metastasis of prostate cancer is characterized by increased ossification, the molecular mechanisms involved in this process are not fully understood. Here, the roles of bone morphogenetic proteins (BMPs) in the interactions between prostate cancer cells and bone stromal cells were investigated. In human prostate cancer LNCaP cells, BMP-4 induced the produ

Pancreatic cancer is one of the cancers with the poorest prognosis, with a 5-year survival rate of approximately 5-10%. Thus, it is urgent to identify molecular targets for the treatment of pancreatic cancer. Using serial transplantations in a mouse pancreatic orthotopic inoculation model, we previously produced highly malignant pancreatic cancer sublines with increased tumor-forming abilities in vivo. Here, we used these sublines to screen molecular targets for the treatment of pancreatic cance

Tissue clearing is one of the most powerful strategies for a comprehensive analysis of disease progression. Here, we established an integrated pipeline that combines tissue clearing, 3D imaging, and machine learning and applied to a mouse tumour model of experimental lung metastasis using human lung adenocarcinoma A549 cells. This pipeline provided the spatial information of the tumour microenvironment. We further explored the role of transforming growth factor-β (TGF-β) in cancer metastasis. TG

DNA hypermethylation is frequently observed in clear cell renal cell carcinoma (ccRCC) and correlates with poor clinical outcomes. However, the detailed function of DNA hypermethylation in ccRCC has not been fully uncovered. Here, we show the role of DNA methylation in ccRCC progression through the identification of a target(s) of DNA methyltransferases (DNMT). Our preclinical model of ccRCC using the serial orthotopic inoculation model showed the upregulation of DNMT3B in advanced ccRCC. Pretre

Although transforming growth factor beta (TGF-β) is known to be involved in the pathogenesis and progression of many cancers, its role in renal cancer has not been fully investigated. In the present study, we examined the role of TGF-β in clear cell renal carcinoma (ccRCC) progression in vitro and in vivo. First, expression levels of TGF-β signaling pathway components were examined. Microarray and immunohistochemical analyses showed that the expression of c-Ski, a transcriptional corepressor of

Cancer tissues exhibit an acidic microenvironment owing to the accumulation of protons and lactic acid produced by cancer and inflammatory cells. To examine the role of an acidic microenvironment in lymphatic cancer metastasis, gene expression profiling was conducted using human dermal lymphatic endothelial cells (HDLECs) treated with a low pH medium. Microarray and gene set enrichment analysis revealed that acid treatment induced the expression of inflammation-related genes in HDLECs, including

Intratumoral heterogeneity, including in clear cell renal cell carcinoma, is a potential cause of drug resistance and metastatic cancer progression. We specified the heterogeneous population marked by endoglin (also known as CD105) in a preclinical model of clear cell renal cell carcinoma progression. Highly malignant derivatives of human clear cell renal cell carcinoma OS-RC-2 cells were established as OS5Ks by serial orthotopic inoculation in our previous study. Expression of both ENG (encodin

Abstract Background DNA hypermethylation is frequently observed in clear cell renal cell carcinoma (ccRCC) and correlates with poor clinical outcomes. However, the detailed function is not fully uncovered. Methods A target for DNA methyltransferases (DNMTs) was explored in ccRCC cells. Highly malignant derivatives of human ccRCC cells were established via serial orthotopic inoculation in mice. Then, DNA methylated sites were genome-widely analyzed using methylation array in reference to RNA-sequ