臨牀消化器内科 Vol.27 No.9(3-1)


特集名 スキルス胃癌―診断・治療の現状と今後
題名 スキルス胃癌の分子生物学―分子標的治療を目指して (1) スキルス胃癌発生の分子機構
発刊年月 2012年 08月
著者 仙谷 和弘 広島大学大学院医歯薬保健学研究科分子病理学研究室
著者 大上 直秀 広島大学大学院医歯薬保健学研究科分子病理学研究室
著者 坂本 直也 広島大学大学院医歯薬保健学研究科分子病理学研究室
著者 安井 弥 広島大学大学院医歯薬保健学研究科分子病理学研究室
【 要旨 】 胃癌は多彩な組織像を示す悪性腫瘍の代表であり,そのなかでもスキルス胃癌は予後不良や癌・間質相互作用などによって特徴づけられる特殊な一型である.これまでにもジェネティックあるいはエピジェネティックな異常を含めた胃癌の病態解明に対するさまざまな基礎研究からHER2などの分子標的治療薬の開発や個別化医療が推進されてきたが,スキルス胃癌に対してはまだ十分とはいえない.このスキルス胃癌の微小環境も含めた発生・進展に関わる分子機構の解明が不可欠といえる.
Theme Diagnosis and Treatment of Scirrhous Gastric Cancer -- Current Status and Future Prospects
Title Molecular Mechanism of Development and Progression in Scirrhous Gastric Cancer
Author Kazuhiro Sentani Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences
Author Naohide Oue Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences
Author Naoya Sakamoto Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences
Author Wataru Yasui Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences
[ Summary ] Scirrhous gastric cancer is characterized by a poor prognosis and a biological interaction between cancer cells and fibroblasts. In the course of development and progression of scirrhous gastric cancer, various alterations of oncogenes, tumor suppressor genes, DNA repair genes, growth factors / receptors, cell cycle regulators and cell adhesion molecules are accumulated. These can be biological markers of malignancy for molecular-pathological diagnosis. The gene expression profilings, based on microarray analysis, serial analysis of gene expression (SAGE) or Escherichia coli ampicillin secretion trap (CAST), have great potential for differentiating the characteristics of gene expression in individual cancers and predicting biological behavior and chemosensitivity. Genetic polymorphism is an important determinant of the endogenous cause of cancer and can be used as a marker for gastric cancer risk that will directly connect with personalized cancer prevention. Many microRNAs are up-regulated and down-regulated, and some of these are associated with histology and cancer progression. Advances in our understanding of the genetic and molecular bases lead to improved diagnosis, personalized medicine and prevention of scirrhous gastric cancer.
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