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P-189 急性膵外分泌毒性のバイオマーカー指標としてのmiR-216aおよび
miR-217
miR-216a & miR-217 as potential biomarkers of acute exocrine pancreatic toxicity
○瀧 憲二 1
, Jianying WANG2
, Rolla YAFAWI2
, Wenhu HUANG2
, Wenyue HU2
, Stephane THIBAULT2
,
Wesley SCOTT2
, Erick KINDT2
, Hovhannes J GUKASYAN2
, Roshan ASHOOR2
, Allison VITSKY2
,
Anette JOHN-BAPTISTE2
1
ファイザー株式会社 非臨床開発研究部 , 2
Drug Safety Research and Development, Pfizer
○ Kenji TAKI1
, Jianying WANG2
, Rolla YAFAWI2
, Wenhu HUANG2
, Wenyue HU2
, Stephane THIBAULT2
, Wesley SCOTT2
, Erick KINDT2
,
Hovhannes J GUKASYAN2
, Roshan ASHOOR2
, Allison VITSKY2
, Anette JOHN-BAPTISTE2
1
Pfizer Japan Inc. Drug Safety R&D., 2
Drug Safety Research and Development, Pfizer
医薬品開発および臨床現場で膵臓障害をモニターするための適切な予測マーカーは存在していない。古典的なバイオマーカー
であるアミラーゼおよびリパーゼは,膵外分泌障害のモニターに対して特異的でなく感度もあまりよくない。そこで,血漿中
のmiR-216aおよびmiR-217が近年,急性膵炎のバイオマーカーとして報告されていることに着目し,本試験では,Caeruleinお
よびCyanohydroxybutene (CHB)誘発の急性膵炎に対して,miR-216aおよびmiR-217の発現を評価した。Caeruleinは合成コレシ
ストキニンアナログ,CHBはアブラナ科で発見された自然毒であり,両化合物ともに膵酵素の分泌を引き起こす。
雄Wistar Hanラットを用いて膵炎モデルを作成した。①Caerulein:0,15および50 µg/kgの用量で1日3回,1時間おきに腹腔内
投与した。②CHB:0,50および150 mg/kgの用量を皮下投与した。それぞれ投与1,6,24および48時間に採血し,投与3日に
剖検した。血清中miR-216aおよびmiR-217をTaqManリアルタイムPCRにより,アミラーゼおよびリパーゼをシーメンスAdvia
1200 Chemistry Analyzerにより測定した。剖検時に膵臓の状態観察および病理組織学的観察も行った。
膵炎はCaeruleinの15および50 µg/kg投与,CHBの50および150 mg/kg投与で認められた。miRNAの発現は両モデルで腺房細
胞の障害と相関していた。Caerulein投与モデルでは,リパーゼとmiRNA発現の相関性は良く,miRNAはリパーゼより長期に
わたって発現していた。以上より,ラットにおいてmiR-216aおよびmiR-217は急性膵外分泌毒性に対して感度が良く,アミラー
ゼやリパーゼより同等かそれ以上の指標であると考えられた。

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42.1_P-189

  • 1. P-189 急性膵外分泌毒性のバイオマーカー指標としてのmiR-216aおよび miR-217 miR-216a & miR-217 as potential biomarkers of acute exocrine pancreatic toxicity ○瀧 憲二 1 , Jianying WANG2 , Rolla YAFAWI2 , Wenhu HUANG2 , Wenyue HU2 , Stephane THIBAULT2 , Wesley SCOTT2 , Erick KINDT2 , Hovhannes J GUKASYAN2 , Roshan ASHOOR2 , Allison VITSKY2 , Anette JOHN-BAPTISTE2 1 ファイザー株式会社 非臨床開発研究部 , 2 Drug Safety Research and Development, Pfizer ○ Kenji TAKI1 , Jianying WANG2 , Rolla YAFAWI2 , Wenhu HUANG2 , Wenyue HU2 , Stephane THIBAULT2 , Wesley SCOTT2 , Erick KINDT2 , Hovhannes J GUKASYAN2 , Roshan ASHOOR2 , Allison VITSKY2 , Anette JOHN-BAPTISTE2 1 Pfizer Japan Inc. Drug Safety R&D., 2 Drug Safety Research and Development, Pfizer 医薬品開発および臨床現場で膵臓障害をモニターするための適切な予測マーカーは存在していない。古典的なバイオマーカー であるアミラーゼおよびリパーゼは,膵外分泌障害のモニターに対して特異的でなく感度もあまりよくない。そこで,血漿中 のmiR-216aおよびmiR-217が近年,急性膵炎のバイオマーカーとして報告されていることに着目し,本試験では,Caeruleinお よびCyanohydroxybutene (CHB)誘発の急性膵炎に対して,miR-216aおよびmiR-217の発現を評価した。Caeruleinは合成コレシ ストキニンアナログ,CHBはアブラナ科で発見された自然毒であり,両化合物ともに膵酵素の分泌を引き起こす。 雄Wistar Hanラットを用いて膵炎モデルを作成した。①Caerulein:0,15および50 µg/kgの用量で1日3回,1時間おきに腹腔内 投与した。②CHB:0,50および150 mg/kgの用量を皮下投与した。それぞれ投与1,6,24および48時間に採血し,投与3日に 剖検した。血清中miR-216aおよびmiR-217をTaqManリアルタイムPCRにより,アミラーゼおよびリパーゼをシーメンスAdvia 1200 Chemistry Analyzerにより測定した。剖検時に膵臓の状態観察および病理組織学的観察も行った。 膵炎はCaeruleinの15および50 µg/kg投与,CHBの50および150 mg/kg投与で認められた。miRNAの発現は両モデルで腺房細 胞の障害と相関していた。Caerulein投与モデルでは,リパーゼとmiRNA発現の相関性は良く,miRNAはリパーゼより長期に わたって発現していた。以上より,ラットにおいてmiR-216aおよびmiR-217は急性膵外分泌毒性に対して感度が良く,アミラー ゼやリパーゼより同等かそれ以上の指標であると考えられた。