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Abnormal LPA receptor signaling in cancer

Abstract

研究代表者連携研究者publisher研究種目:基盤研究(B); 研究期間:2012~2014; 課題番号:24590129; 研究分野:細胞生物学; 科研費の分科・細目:研究成果の概要(和文): リゾホスファチジン酸(LPA)は多様な生理活性を示す脂質メディエーターであり、その作用はLPA受容体(LPA1~LPA6)を介して生じる. これまでLPAシグナルががん発生・増殖・進展に関与していることが示唆されており, がん治療の新規標的と考えられている. 本研究では, がん組織で発現している, LPAの作用を検討したところ, LPAシグナルの結果と思われていたがん細胞に対する作用の一部が, その構成成分である脂肪酸に由来するという, 新たな知見を得た. 研究成果の概要(英文): Lysophosphatidic acid (LPA) is a lysolipid mediator that exerts various physiological actions. The effects of LPA are mediated through at least six types of LPA receptors, including LPA1~LPA6. Involvement of LPA receptor-mediated signaling in cancer growth has been so far suggested. The present study demonstrated that LPA receptor mutants observed in cancer tissues showed abnormal cellular distribution and intracellular signaling. Further analysis for LPA signaling in a certain type of ovarian cancer cell line revealed that the effects of LPA signaling were partly attributed to a fatty acid liberated from LPA

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