JP7319765B2 - 過敏性膀胱疾患の診断のためのバイオマーカー及びこれを利用した薬剤のスクリーニング方法 - Google Patents
過敏性膀胱疾患の診断のためのバイオマーカー及びこれを利用した薬剤のスクリーニング方法 Download PDFInfo
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Description
(A)Anxa5、Slc12a7、Vamp8、Cacna2d1、Lgals3bp、Pgrmc1、ENTPD1、P2RX1、ATP5B、VAMP2、EIF4B、PTMA、C2、C3、C4A、C4B、CFH、CILP、IGFBP7、ITIH1、MGP、NID2及びPF4からなる群から選ばれる1つ以上のものを発現する細胞を、試験製剤と一緒に、又は試験製剤なしで培養する段階;及び
(B)前記試験製剤と共に培養された細胞と、試験製剤なしで培養された細胞における、前記(A)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(A)段階で選ばれたものに対する発現又は活性を阻害するか否かを確認する段階
を含む過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング方法を提供することである。
(a)RBP4、RPSA、PIN2、CP、SOD2、HSPD1、PEF1、1300017J02Rik protein、A1BG、CFL2、CPA3、ECM1、FBLN5、FGB、FMOD、GPX3、HBA1、HBA2、HP、ITIH4、LAMC1、LTBP4、PCOLCE、PRG2、PXDN、SERPINA6、SUSD2、TINAGL1及びTNCからなる群から選ばれる1つ以上のものを発現する細胞を、試験製剤と共に、又は試験製剤なしで培養する段階;及び
(b)前記試験製剤と共に培養された細胞と、試験製剤なしで培養された細胞における、前記(a)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(a)段階で選ばれたものに対する発現又は活性を増加させるか否かを確認する段階
を含む過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング方法を提供することである。
(A)Anxa5、Slc12a7、Vamp8、Cacna2d1、Lgals3bp、Pgrmc1、ENTPD1、P2RX1、ATP5B、VAMP2、EIF4B、PTMA、C2、C3、C4A、C4B、CFH、CILP、IGFBP7、ITIH1、MGP、NID2及びPF4からなる群から選ばれる1つ以上のものを発現する細胞を試験製剤と共に、又は試験製剤なしで培養する段階;及び
(B)前記試験製剤と一緒に培養された細胞と試験製剤なしで培養された細胞での前記(A)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(A)段階で選ばれたものに対する発現又は活性を阻害するか否かを確認する段階
を含む過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング方法を提供する。
(b)前記試験製剤と共に培養された細胞と試験製剤なしで培養された細胞での前記(a)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(a)段階で選ばれたものに対する発現又は活性を増加させるか否かを確認する段階
を含む、過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング方法を提供する。
(I)前記群から選ばれるもののタンパク質に特異的に結合する抗体、前記タンパク質に特異的な結合ドメインを有するペプチド又はアプタマー;又は
(II)前記群から選ばれるもののタンパク質をコードする遺伝子のmRNA(又はcDNA)に特異的に結合するプライマー又はプローブを使用しているものでもあり得る。
(1)疑わしい個体から分離された生物学的試料から、Anxa5、Slc12a7、Vamp8、Cacna2d1、Lgals3bp、Pgrmc1、ENTPD1、P2RX1、ATP5B、VAMP2、EIF4B、PTMA、C2、C3、C4A、C4B、CFH、CILP、IGFBP7、ITIH1、MGP、NID2、PF4、RBP4、RPSA、PIN2、CP、SOD2、HSPD1、PEF1、1300017J02Rik protein、A1BG、CFL2、CPA3、ECM1、FBLN5、FGB、FMOD、GPX3、HBA1、HBA2、HP、ITIH4、LAMC1、LTBP4、PCOLCE、PRG2、PXDN、SERPINA6、SUSD2、TINAGL1及びTNCからなる群から選ばれる1つ以上のものの活性又は発現水準を測定する段階;及び
(2)前記(1)段階の測定結果を正常人における測定結果と比較する段階
を含む過敏性膀胱疾患の診断に必要な情報を提供する方法(以下、OABの診断方法)を提供する。
(A)Anxa5、Slc12a7、Vamp8、Cacna2d1、Lgals3bp、Pgrmc1、ENTPD1、P2RX1、ATP5B、VAMP2、EIF4B、PTMA、C2、C3、C4A、C4B、CFH、CILP、IGFBP7、ITIH1、MGP、NID2及びPF4からなる群から選ばれる1つ以上のものを発現する細胞を試験製剤と共に、又は試験製剤なしで培養する段階;及び
(B)前記試験製剤と共に培養された細胞と試験製剤なしで培養された細胞での前記(A)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(A)段階で選ばれたものに対する発現又は活性を阻害するか否かを確認する段階
を含む過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング(選別)方法を提供する。
(C)前記(B)段階で発現又は活性を抑制する効果があると確認された試験製剤を、過敏性膀胱疾患を有する動物に投与して、治療効果を示すか否かを確認する段階
をさらに含むことができる。
(a)RBP4、RPSA、PIN2、CP、SOD2、HSPD1、PEF1、1300017J02Rik protein、A1BG、CFL2、CPA3、ECM1、FBLN5、FGB、FMOD、GPX3、HBA1、HBA2、HP、ITIH4、LAMC1、LTBP4、PCOLCE、PRG2、PXDN、SERPINA6、SUSD2、TINAGL1及びTNCからなる群から選ばれる1つ以上のものを発現する細胞を試験製剤と共に、又は試験製剤なしで培養する段階;及び
(b)前記試験製剤と共に培養された細胞と試験製剤なしで培養された細胞での前記(a)段階で選ばれたものの発現又は活性の程度を比較して、前記試験製剤が前記(a)段階で選ばれたものに対して発現又は活性を増加させるか否かを確認する段階
を含む過敏性膀胱疾患の予防又は治療用薬剤のスクリーニング方法を提供する。
(c)前記(b)段階で発現又は活性を増加させる効果があると確認された試験製剤を、過敏性膀胱疾患を有する動物に投与して治療効果を示すか否かを確認する段階
をさらに含むことができる。
以下、本発明を詳細に説明する。
但し、下記の実施例は、本発明を例示するのみで、本発明の内容が下記実施例に限定されるものではない。
1.実験動物
全ての動物実験は、動物の世話と使用に対するガイドラインに従い、プロトコルはInstitutional Animal Care and Use Committee of Chungnam National University、Daejeon、Korea(Irb No. CNU-00706)の承認を得た。本研究では、雌スプラーグドーリーラット(200 ± 30g)を使用した。本研究で動物は、二つのグループに分けられた:偽手術グループ(sham-operated group、n=40)、部分的膀胱下尿道閉塞グループ(n=60)。動物に標準的ラット飼料を与え、水は自由給水された。標準実験条件(25±1℃、55±5%湿度、及び12時間の明暗周期変更)で、前記実験動物は、おがくずを敷いたそれぞれ分離されたケージに個別にハウジングされた。
尿道の部分的閉塞を誘導するために、“Lluel P. et al.,(1998)”及び“Lee T. et al., (2008)”に記載されたのと同じ、従来の手術方法を行った。ラットをキシラジン(10mg/kg)及びケタミン(100mg/kg)の筋肉注射で麻酔させた。手術中の熱損失を減らすために、ラットをサーボ制御式手術台(servo-controlled surgical table)に置いた。下部正中切開を通じて膀胱と筋萎部尿道を露出させた。尿道を確認した後、直径0.9mmの鉄棒(steel rod)を管(meatus)から尿道に挿入した。Novafilの4-0縫合糸(nomofilament polybutester; Davis & Geck, Wayne, NJ)を尿道の周りに置いて鉄棒位置で結び、結紮緊張を持続的に加えた。縫合後、鉄棒を除去することで、尿道が部分的に詰まった状態になった。偽手術も同様に、解剖された尿道の周りに4-0非吸収性モノフィラメント縫合糸を緩く結ぶ過程を含む、類似した方法で進行された。
膀胱内カテーテル挿入は、膀胱内圧測定手術(cystometry procedure)の3日前に施行された。下腹部を切開して、カフ(cuff)があるポリエチレンカテーテル(PE-20; A-M Systems, Carlsberg, WA, USA)を膀胱円蓋(bladderdome)に挿入し、6-0シルク糸で円形の巾着縫合(purse-string suture)で固定させた。カテーテルは皮下にトンネルを設け、4-0シルク糸で固定されて、上部肩甲骨の水準で外面化(exteriorize)された。カテーテルの自由端部(free end)は3日間密封された。腹膜及び筋肉切開においては連続的な5-0バイクリル縫合糸を利用して切開部位が縫合され、皮膚の縫合のためには5-0シルク縫合糸が使用された。偽手術ラットも同じ過程を適用した。
最初の手術後14日目に、麻酔なしで膀胱内圧検査を実施した。膀胱内の圧力を測定するために、膀胱内圧検査の間、膀胱内カテーテルの端部を三方活栓で圧力変換器(PowerLab、AD Instrument、Sydney、Australia)と注入ポンプ(Promed-Tech.、Bellingham、MA、USA)に接続し、室温の生理食塩水を膀胱に10ml/hで注入した。意識のあるマウスを、水と飼料が自由供給されている代謝ケージに置いた。前記ケージはまた、流体収集機を利用して、排尿嵩(micturition volume、MV)の測定が可能であって、前記流体収集機は張力変換器(Grass Instruments、Quincy、MA、USA)に連結され、これは変換器増幅器を通じてデータ収集ソフトウェア(PowerLab、AD Instrument)に連結された。排尿パターンが安定した後、4-6個の代表的な排尿サイクルに対するデータを収集して平均値を計算した。Windowsのデータ収集システム(PowerLab、AD Instrument)のChart v5.5.6を使用して、2000Hzのサンプリング速度でIVPとMVは同時に持続的に記録された。
膀胱内圧検査後、ラットを麻酔させ、腹部を切開して筋萎部尿道付近で膀胱を除去した。膀胱組織を秤量して解剖顕微鏡下で粘膜固有層を切開して、平滑筋層から尿路上皮を慎重に分離した。生化学的測定のために、前記収得した各サンプルを直ちに-70℃で保管した。
タンパク体の分析のために、各グループに10個の膀胱尿路上皮組織を、2つのチューブに分けて入れた。膀胱尿路上皮組織サンプルを、8M尿素とプロテアーゼ阻害剤カクテルを含有する700μLリシスバッファーを加えてマイクロペストルで均質化した。組織残骸(debris)は2000xgで10分間の低速遠心分離を通じて除去し、上澄み液を収集した。タンパク質濃度は、ビシンコニン酸(BCA)法によって決定され、以降の研究のために、試料は-70℃で保管した。15μgのタンパク質サンプルを12%SDS-PAGEで分離した。ゲルはクマシーブリリアントブルーR-250で染色された。ゲル内分解(in-gel digestion)は“Park、E. C. et al.、(2012)”等、従来開示された方法に基づいて行われた。ゲルを分子量によって8部分に分画した。ゲル片を脱染(destaining)させ、次いで、タンパク質のシステインを還元及びアルキル化した後、37℃で16時間、トリプシンで分解させた。分解されたペプチドは、抽出溶液(50mM ammonium bicarbonate、50% acetonitrile、及び5% trifluoroacetic acid)で抽出された。分解されたペプチドは、0.02%ギ酸及び0.5%酢酸を含有する10μlのサンプル溶液で溶解させた。
前記ペプチドを分離し、エレクトロスプレーイオン化質量分析(LC-ESI MS)と統合された液体クロマトグラフィーを使用して、ペプチドを同定した。ペプチドサンプル(5μl)は5μm C18粒子(Acclaim PepMap100、Thermo Scientific)が充填された75μm内径のトラップカラムで濃縮され、2μm C18粒子が充填された15cmの分析カラム(Acclaim PepMap RSLC、Thermo Scientific)上で分析された。逆相クロマトグラフィーは、0.1%ギ酸及び80% ACN(0.1%ギ酸内、溶媒B)の二元溶媒と共にUltimate 3000 RSLCナノシステム(Thermo Scientific)を使用して行った。300nl/minの流速で100分間、5%から95%まで溶媒Bの直線勾配条件でペプチドが分離された。LTQ-Velos ESIイオントラップ質量分析計(Thermo Scientific、USA)の全てのMS及びMS/MSスペクトルを、データ依存モードで収集した。それぞれの全体MS(m/z 範囲:300~2000)スキャン以後に、動的除外(dynamic exclusion)が可能なMSスペクトルで最も豊富な前駆体イオンの3つのMS/MSスキャンが続いた。MS/MS分析は、各サンプルに対して3回行われた。MS/MSスペクトルの生ファイルは、Proteome Discoverer daemon ver. 1.4(Thermo Fisher Scientific、Waltham、MA、USA)を利用してmgfファイルに変換された。変換されたmgfファイルは、MASCOT ver. 2.4.0(Matrix science、www.matrixscience.com)を利用したタンパク質の確認に使用された。emPAI(exponentially modified protein abundance index Protein quantification)を計算することによって、タンパク質定量値を得た。データベース検索に適用された検索パラメータは以下の通りであった:enzyme specificity:trypsin/P; maximum missed cleavages:2; carboxymethyl(C)as a static modification; oxidation(M) and N-terminal acetylation as dynamic modifications; a precursor mass tolerance of 0.8 Da; and a MS/MS mass tolerance of 0.8 Da。MS/MSデータは、FDR(false discovery、データベースで一致する数の中でDecoy databaseで偽陽性(false positive)一致比率を計算)<1%基準によりフィルタリングされた。タンパク質同定のためのデータベースとしてUniProt rat proteome database(2015_01.、www.uniprot.org)が使用された。
データセットの機能解析は、Ingenuity Pathway Analysis(IPA、ingenuity Systems、Redwood City、CA、www.ingenuity.com)を使用して行われた。機能的分析を通じてデータセットで最も重要な生物学的機能及び/又は疾病を確認した。前記の分析は、Ingenuity Knowledge Baseに対して行われた。フィッシャーの正確確率検定をp値を計算するために使用し、これは、各データセットに割り当てられたそれぞれの生物学的機能及び/又は疾病が偶然によるものである確率を決定する。既知の経路解析を通じて、データセットで最も重要な経路をIngenuity Pathway Knowledge Baseから確認した。データセットと既知の経路(canonical pathway)間の関連性に対する有意性(significance)は、既知の経路にマッピングされるデータセットからのタンパク質の数を、既知の経路にマッピングされる総タンパク質で割った比率、及び’フィッシャーの正確確率検定により測定された。二つの短いリストからのフォーカス遺伝子(focus genes)はIngenuity Pathway Knowledge Baseに含まれた情報をもとに開発されたグローバル分子ネットワークにオーバーレイされた(overlaid)。これは、個別タンパク質の関連性を基に、ネットワークを作り上げた。同時にタンパク質群(cluster)及び特異的に発現された遺伝子の配置が生成された。
データは、平均±SEMで表現された。全ての統計分析は、Predictive Analytics Software 18.0(SPSS Inc.、Chicago、IL、USA)を使用して行われた。統計的分析はスチューデントのt検定で行われ、データが正常的に分配されない場合にマン・ホイットニーのU検定で行われた。帰無仮説が>95%の信頼度で棄却されるとすれば、その差は統計的に有意なものと見做された。
ウエスタンブロット及び免疫組織化学染色は、“Park E. C. et al., (2012)”等で従来公知の標準プロトコルに基づいて行った。使用された一次抗体は、以下の通りである:β-actin(sc-47778)、P2RX1(sc-25692)、ATP5B(sc-33618)、VAMP2(sc-13992)、EIF4B(sc-82587)、PTMA(sc-30037)。総RNA抽出とcDNA合成は“Park E. C. et al., (2012)”等の文献に記載されている通り行われた。SYBR Greenを利用してExicyclerTM96(Bioneer、Daejeon、S. Korea)でリアルタイムPCRを行った。
OAB (overactive bladder)疾患ラットモデルの確立
OABは膀胱下尿道閉塞(bladder outlet obstruction、BOO)によって誘導されることが知られており、特に前立腺肥大症がある場合に、膀胱の下尿道閉塞症状が現れ、これによるOAB疾患を伴う場合が多い。ヒトの膀胱下尿道閉塞の効果は、動物モデルで外科的に誘導することができるので、部分的膀胱下尿道閉塞動物モデルがOABの研究に使用された。OAB尿路上皮のタンパク質発現プロファイルを調査するために、OABラットモデルを製作した。部分的膀胱下尿道閉塞はラットの尿道を結索する外科的方法で誘導された。OAB群において、対照群に比べて膀胱重量の有意な増加が観察された(表1)。
OABに関連したタンパク質の同定
偽コントロール膀胱の尿路上皮と、OAB尿路上皮との間のタンパク質発現の差を調査するために、尿路上皮を平滑筋層から慎重に除去し、タンパク質を抽出してLTQ-Velos ESIイオントラップ質量分析を使用して分析した。偽コントロールラットの尿路上皮では合計507個のタンパク質が検出され、OABラットの尿路上皮では380個のタンパク質が検出された(図2参照)。このうち306個(52.7%)のタンパク質は、偽コントロール及びOABの尿路上皮で共通して発現された。対照的に、偽コントロール尿路上皮では201個のタンパク質が、OAB尿路上皮では74個のタンパク質が、それぞれ特異的に発見された。偽コントロール尿路上皮で発現される多数のタンパク質(507個のうち201個 (39.6%))がOAB尿路上皮で抑制されたことを確認し、タンパク質の19.5%(380個のうち74個)はOAB尿路上皮では発現されたが偽コントロール尿路上皮ではそうでなかった(図2及び表2参照)。また、共通して発現される306個のタンパク質のうち、80個(52+28、26.1%)の発現水準が、少なくとも2.0倍以上に変更された(表2)。これはOAB疾患で尿路上皮のタンパク質の発現が著しく変化して、OABラットモデルにおいて正常な尿路上皮の機能が破壊されたことを示唆する。総合的に、下記表2に示した通り、それぞれ、正常(偽手術)でのみ検出されるタンパク質(201個)、OABでのみ検出されるタンパク質(74個)、OABで発現水準が2倍以上著しく変化するタンパク質(80個)の合計355個のタンパク質がOABで特異的に発現されたことを確認した。
特異的に発現されたタンパク質の機能予測(functional annotation)
データに対して経路及びネットワーク水準での分析を行うために、355個の特異的に発現されたタンパク質をIngenuity Pathway Analysis(IPA)を利用して分析した。34個の確認された既知の経路(cononical pathway)を図5に示し、これは偽コントロール及びOAB尿路上皮で、結合された上位20個の最も重要な既知の経路を示す。OAB尿路上皮で補体系(complement system)、急性期シグナル伝達、LXR/RXR活性化及びp38 MAPKシグナル伝達のように、炎症に関与する経路が著しく上向制御された。対照的に、ILKシグナル伝達、RhoAシグナル伝達及び上皮接着結合の再構成(remodeling of epithelial adherens junction)を含む細胞骨格組織(cytoskeletal organization)と関連したシグナル伝達経路は、一般的にOAB尿路上皮で下向制御された。変性タンパク質応答(ERストレス)に関与するタンパク質が下向制御され、死受容体シグナル伝達(death receptor signaling)に関与するタンパク質らが上向制御された。
OABの上流制御制御因子(upstream regulator)分析
前述したタンパク質体の分析結果は、正常尿路上皮とOAB尿路上皮との間のタンパク質発現と、これに関連したシグナル伝達経路についてかなりの差を示した。OABの潜在的な原因を調査するためにIPAを使用して、生物情報学的分析(bioinformatic analysis)を行った。分析の結果、前述した実施例でOABから過剰発現されるものと確認されたタンパク質に対して、17個の推定上流制御因子を確認した(表3)。これらの制御因子は、主に炎症と細胞骨格形成に関与した。CR1L(Complement component 3b/4b receptor 1-like)、HTT(huntingtin)及びINHA(inhibin α)は、Cryab、Aldoa、Tpm2、Myl9、Cnn1、Myh11及びC3等の上流制御因子として作用し、筋肉収縮の活性化を誘発できるものと確認された。また、炎症反応を制御することができる6つの上流制御因子HTT、INHA、ITGA2(integrin α2)、CR1L、HNF1B(HNF1 homeobox B)及びPDGF(platelet derived growth factor family)を確認し、これらは尿路上皮で確認された多数の他のタンパク質の制御を通じた白血球の細胞浸潤だけでなく、白血球及び好中球の細胞遊走に影響を与えることができる。下記表3に示した通り上流シグナル因子と、これらの下流作動因子(effector、前述した実施例ではOAB過剰発現を確認)に対する追加的な機能的研究は、OABで排尿筋の非正常的な生理現象の原因に対する分子的証拠を提供することができる。
膀胱尿路上皮でシグナル伝達に関与するタンパク質
尿路上皮は隣接して位置した膀胱神経、排尿筋平滑筋(detrusor smooth muscle、DSM)及び筋線維芽細胞(myofibroblast)のような間質細胞(intestitial cell)と疎通するために、多数のシグナル分子を分泌する。尿路上皮から分泌される典型的なシグナル分子は、アデノシン三リン酸(ATP)、一酸化窒素(NO)、プロスタグランジン(prostaglandin、PG)、プロタキキニン-1(TAC1)、Ach及び神経成長因子(NGF)である。
潜在的OABの診断マーカー
OABに対して知られている分子的診断マーカーがないので、OABの臨床的診断は、依然として症状に基づいて行われている。前述した通り、本研究では、尿路上皮でタンパク質の発現がOABによって動的に変化したことを示した。このようにOAB尿路上皮で異なる発現様相を示すタンパク質は、OABに対する潜在的診断マーカーとして使用することができる。尿路上皮は尿と直接接触する最外郭の壁組織(outermost barrier tissue)である。尿路上皮によって発現される細胞外タンパク質として尿中に放出されるもの等は、さらに、非侵襲的OABの診断マーカーとして使用することができる。正常(sham control)又はOABラット尿路上皮で排他的に発現された37個の細胞外タンパク質を確認した(表4)。このうち、11個のタンパク質は、OABの尿路上皮でのみ発現された(表4)。残りの24個のタンパク質は、正常的な尿路上皮でのみ発現された。このような潜在的なマーカータンパク質は、OABで表れる病態生理学的変化と密接な関連がある。また、リアルタイムPCR実験を通じて、C3、C4aは、Clip、ITIH1、NID2等OABで上向制御されたタンパク質の発現水準増加を確認した(図8)。尿でこれらのタンパク質又はそのペプチド断片を検出することは、OAB診断に有用なものと思われ、これらの発現態様を利用して、これを変化(特に、正常化)させる薬剤を選別することにより、さらに、的中率が高く、効果的なOAB疾患の予防又は治療薬剤スクリーニングが可能である。
Claims (6)
- Anxa5 (Annexin A5)の活性又は発現水準を測定する製剤を含む、過敏性膀胱疾患の診断用組成物であって、
前記製剤は、
(I)Anxa5に特異的に結合する抗体、又はAnxa5に特異的な結合ドメインを有するペプチドもしくはアプタマー;又は
(II)Anxa5をコードする遺伝子のmRNAに特異的に結合するプライマー又はプローブであることを特徴とする、前記診断用組成物。 - 前記プローブは、オリゴヌクレオチドプローブ、単鎖DNAプローブ、二重鎖DNAプローブ及びRNAプローブからなる群から選ばれる1つ以上のものであることを特徴とする、請求項1記載の過敏性膀胱疾患の診断用組成物。
- 請求項1記載の組成物を含む、過敏性膀胱疾患の診断用キット。
- 過敏性膀胱疾患の診断に必要な情報を提供するために、疑わしい個体から分離された生物学的試料から、Anxa5の活性又は発現水準を測定する製剤を用いて、Anxa5を検出する方法であって、
前記製剤は、
(I)Anxa5に特異的に結合する抗体、又はAnxa5に特異的な結合ドメインを有するペプチドもしくはアプタマー;又は
(II)Anxa5をコードする遺伝子のmRNAに特異的に結合するプライマー又はプローブであり、
前記生物学的試料は、膀胱尿路上皮又は尿であることを特徴とする、前記方法。 - (A)Anxa5を発現する細胞を、試験製剤と一緒に、又は試験製剤なしで培養する段階;及び
(B)前記試験製剤と一緒に培養された細胞と試験製剤なしで培養された細胞でのAnxa5の発現又は活性の程度を比較して、前記試験製剤がAnxa5の発現又は活性を抑制するか否かを確認する段階
を含む、過敏性膀胱疾患の予防用薬剤又は治療用薬剤のスクリーニング方法であって、
前記Anxa5の発現又は活性の程度は、
(I)Anxa5に特異的に結合する抗体、又はAnxa5に特異的な結合ドメインを有するペプチドもしくはアプタマー;又は
(II)Anxa5をコードする遺伝子のmRNAに特異的に結合するプライマー又はプローブである製剤を用いて測定される、前記方法。 - さらに、Slc12a7 (solute carrier family 12 member 7)、Vamp8 (Vesicle-associated membrane protein 8)、Cacna2d1 (Voltage-dependent calcium channel subunit alpha-2/delta-1)、Lgals3bp (galectin 3 binding protein)、Pgrmc1 (Membrane-associated progesterone receptor component 1)、ENTPD1 (Ectonucleoside Triphosphate Diphosphohydrolase 1)、P2RX1 (P2X purinoceptor 1)、ATP5B (ATP synthase subunit beta)、VAMP2 (Vesicle-associated membrane protein 2)、EIF4B (Eukaryotic translation initiation factor 4B)、PTMA (Prothymosin Alpha)、C2 (complement component 2)、C3 (complement component 3)、C4A (complement component 4A)、C4B (complement component 4B)、CFH (complement factor H)、CILP (cartilage intermediate layer protein)、IGFBP7 (insulin-like growth factor binding protein 7)、ITIH1 (inter-alphatrypsin inhibitor heavy chain 1)、MGP (matrixGla protein)、NID2 (nidogen 2)、PF4 (platelet factor 4)、RBP4 (Retinol binding protein 4)、RPSA (40S ribosomal protein SA)、PIN2 (Auxin efflux carrier component 2)、CP (ceruloplasmin)、SOD2 (superoxide dismutase 2)、HSPD1 (60 kDa heat shock protein family D member 1)、PEF1 (Peflin)、1300017J02Rik protein、A1BG (alpha-1-B glycoprotein)、CFL2 (cofilin 2)、CPA3 (carboxypeptidase A3)、ECM1 (extracellular matrix protein 1)、FBLN5 (fibulin 5)、FGB (fibrinogen beta chain)、FMOD (fibromodulin)、GPX3 (glutathione peroxidase 3)、HBA1 (hemoglobin alpha 1)、HBA2 (hemoglobin alpha 2)、HP (haptoglobin)、ITIH4 (inter-alpha-trypsin inhibitor heavy chain family member 4)、LAMC1 (laminin gamma 1)、LTBP4 (latent transforming growth factor beta binding protein 4)、PCOLCE (procollagen C-endopeptidase enhancer)、PRG2 (proteoglycan 2)、PXDN (peroxidasin)、SERPINA6 (serpin peptidase inhibitor clade A member 6)、SUSD2 (sushi domain containing 2)、TINAGL1 (tubulointerstitial nephritis antigen-like 1)及びTNC (tenascin C)からなる群から選ばれる1つ以上のものの活性又は発現水準を測定する製剤を含む、請求項1記載の過敏性膀胱疾患の診断用組成物。
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