JP2018532995A - 腹膜の上皮間葉転換(emt)の診断方法および診断キット - Google Patents
腹膜の上皮間葉転換(emt)の診断方法および診断キット Download PDFInfo
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Abstract
【選択図】図1
Description
a)細胞外マトリックスのタンパク質(extracellular matrix protein)、
b)細胞外マトリックスの構築および/または再構築に関与するタンパク質(protein involved in building and/or restructuring of extracellular matrix)、
c)細胞−細胞接触および/または細胞−マトリックス接触に関与するタンパク質(protein involved in cell-cell and/or cell-matrix contacts)、
d)成長因子(growth factor)、ならびにオプションとして、
e)BMP拮抗薬(antagonist)。
a)細胞外マトリックスのタンパク質、
b)細胞外マトリックスの構築および/または再構築に関与するタンパク質、
c)細胞−細胞接触および/または細胞−マトリックス接触に関与するタンパク質、
d)成長因子、ならびにオプションとして、
e)BMP拮抗薬。
a)腹膜のモデルとして作用する(または機能する、serving as)腹膜または細胞または組織培養物と、PD溶液とを接触させること、および
b)本発明のいずれかの診断キットおよび/または方法を用いて、腹膜または細胞または組織培養物の状態を分析すること。
示差的遺伝子発現研究(Differential gene expression studies)は、PD患者の流出物に由来する培養された中皮細胞において実施された。PD患者に由来する、類上皮細胞表現型を有する9つのサンプルおよび非類上皮細胞表現型を有する8つのサンプルを対照プール(4つの異なる健康なドナーの腹膜網に由来する中皮細胞)と比較した。様々な群の誘導性遺伝子(induced gene)または抑制遺伝子(repressed gene)が得られ、RT−qPCRによって40の遺伝子が検証された。15の遺伝子のサブセット(または小集団、subset)の結果を表1に示す。さらに、生体適合性(例えば、BicaVera)およびより生体適合性の低い(生体非適合性)PD流体(例えば、Stay-safe)の使用にしたがって、表2に示すようにグループ分けした。表3は、生体非適合性PD流体の使用が、生体適合性PD流体の使用より高いEMT率をもたらすことを示す。表1および表2の結果は、本発明のマーカーの高い機能的意義を示す。
酵素結合免疫吸着検定法(Enzyme-Linked ImmunoSorbent Assay、ELISA)により、26のPD患者の流出物に由来する中皮細胞の培養物から得られた上清においてタンパク質を測定し、PD処理開始時で26検体、12ヶ月で26検体、18カ月で20検体および24カ月で11検体(データ示さず)のように分布した。中皮細胞を、20%のFBSおよび50U/mlのペニシリン、50μg/mlのストレプトマイシンおよび2%のBiogro−2を添加したEarle’sM199培地で培養した。細胞がコンフルエント(または密集、confluency)に達したとき、培地を24時間の間、新鮮な培地と交換した。上清を回収し、使用するまで−80℃で保存した。上清の分析のために、細胞溶解物中の全タンパク質で上清中のタンパク質を標準化した(normalized)。選択マーカーをELISAで分析した。TSP1、VEGF、MMP2、CDH13およびGREM1は、非類上皮細胞群において、これらのタンパク質のすべてがより多量であり、類上皮細胞表現型および非類上皮細胞表現型の間で異なる発現を示した。
PD患者に由来する40の流出物をELISAによって分析し、タンパク質レベルの異なるマーカーについての例示的データを本明細書に含める。
Claims (17)
- サンプル中のマーカーの検出剤を含んで成る、上皮間葉転換(EMT)の診断キットであって、
マーカーが、
a)細胞外マトリックスのタンパク質、
b)細胞外マトリックスの構築および/または再構築に関与するタンパク質、
c)細胞−細胞接触および/または細胞−マトリックス接触に関与するタンパク質、
d)成長因子、ならびに
e)オプションとして、BMP拮抗薬
を含んで成る、
診断キット。 - サンプル中の複数のマーカーの非存在および/または量を検出することを含んで成る、上皮間葉転換(EMT)の診断方法であって、
マーカーが、
a)細胞外マトリックスのタンパク質、
b)細胞外マトリックスの構築および/または再構築に関与するタンパク質、
c)細胞−細胞接触および/または細胞−マトリックス接触に関与するタンパク質、
d)成長因子、ならびに
e)オプションとして、BMP拮抗薬
を含んで成る、
診断方法。 - サンプル中のマーカーの検出剤が、抗体またはその断片である、請求項1に記載の診断キットまたは請求項2に記載の診断方法。
- サンプル中のマーカーの検出剤が、固体サポートに結合されており、キットが好ましくは抗体チップを含んで成る、請求項1もしくは3に記載の診断キットまたは請求項2〜3のいずれかに記載の診断方法。
- 細胞外マトリックスのタンパク質が、ケラチン34を含んで成る群から選択されるケラチン、ならびに/またはコラーゲン13およびコラーゲン6を含んで成る群から選択されるコラーゲンであり、
マーカーが、好ましくは細胞外マトリックスのタンパク質であるケラチン34、コラーゲン13およびコラーゲン6を含んで成る、請求項1もしくは3〜4のいずれかに記載の診断キットまたは請求項2〜4のいずれかに記載の診断方法。 - 細胞外マトリックスの構築および/または再構築に関与するタンパク質が、マトリックス・メタロプロテイナーゼ1を含んで成る群から選択されるマトリックス・メタロプロテイナーゼである、請求項1もしくは3〜5のいずれかに記載の診断キットまたは請求項2〜5のいずれかに記載の診断方法。
- 細胞−細胞接触および/または細胞−マトリックス接触に関与するタンパク質が、カドヘリン13を含んで成る群から選択されるカドヘリンおよび/またはトロンボスポンジン1を含んで成る群から選択されるトロンボスポンジンであり、
マーカーが、好ましくはカドヘリン13およびトロンボスポンジン1を含んで成る、請求項1もしくは3〜6のいずれかに記載の診断キットまたは請求項2〜6のいずれかに記載の診断方法。 - 成長因子がVEGFである、請求項1もしくは3〜7のいずれかに記載の診断キットまたは請求項2〜7のいずれかに記載の診断方法。
- BMP拮抗薬がグレムリン1である、請求項1もしくは3〜8のいずれかに記載の診断キットまたは請求項2〜8のいずれかに記載の診断方法。
- マーカーが、カドヘリン13、コラーゲン13、コラーゲン6、ケラチン34、マトリックス・メタロプロテアーゼ1、トロンボスポンジン1、VEGFおよびグレムリン1である、請求項1もしくは3〜9のいずれかに記載の診断キットまたは請求項2〜9のいずれかに記載の診断方法。
- マーカーの増加量が、上皮間葉転換(EMT)を示す、請求項1もしくは3〜10のいずれかに記載の診断キットまたは請求項2〜10のいずれかに記載の診断方法。
- 上皮間葉転換が、腹膜の上皮間葉転換であり、好ましくは、サンプルが腹膜透析患者に由来する、請求項1もしくは3〜11のいずれかに記載の診断キットまたは請求項2〜11のいずれかに記載の診断方法。
- サンプルが、
a)腹膜流出物、腹水、血清、腹膜組織を含んで成る患者から得られるサンプル、および
b)腹膜透析のモデルとして有用な、細胞または組織培養物から得られる培養培地または細胞溶解物
を含んで成る群から選択される、請求項1もしくは3〜12のいずれかに記載の診断キットまたは請求項2〜12のいずれかに記載の診断方法。 - 上皮間葉転換を診断するための、好ましくは、腹膜透析患者の腹膜の上皮間葉転換を診断するための、請求項1または3〜13のいずれかに記載の診断キットの使用。
- 請求項1もしくは3〜13のいずれかに記載の診断キットおよび/または請求項2〜13のいずれかに記載の診断方法を用いて、患者の組織の状態を分析することを含んで成る、患者の組織、好ましくは腹膜の上皮間葉転換の進行を予測する、方法。
- 請求項1もしくは3〜13のいずれかに記載の診断キットおよび/または請求項2〜13のいずれかに記載の診断方法を用いて、患者の腹膜の状態を分析することを含んで成る、腹膜透析患者の治療を最適化する方法であって、該治療が患者の腹膜の状態に合わせられる、方法。
- 腹膜透析溶液の検査方法であって、
a)腹膜のモデルとして作用する腹膜または細胞または組織培養物と、溶液とを接触させること、
b)請求項1もしくは3〜13のいずれかに記載の診断キットおよび/または請求項2〜13のいずれかに記載の診断方法を用いて、腹膜または細胞または組織培養物の状態を分析すること
を含んで成る、検査方法。
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