JP5711616B2 - Il−17産生抑制剤 - Google Patents
Il−17産生抑制剤 Download PDFInfo
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- JP5711616B2 JP5711616B2 JP2011129424A JP2011129424A JP5711616B2 JP 5711616 B2 JP5711616 B2 JP 5711616B2 JP 2011129424 A JP2011129424 A JP 2011129424A JP 2011129424 A JP2011129424 A JP 2011129424A JP 5711616 B2 JP5711616 B2 JP 5711616B2
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- fucoxanthin
- fucoxanthinol
- cells
- acid
- seaweed
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Description
[1]
フコキサンチン、フコキサンチノール又はそれらの誘導体を含有するIL−17産生抑制剤。
[2]
フコキサンチン、フコキサンチノール又はそれらの誘導体を含有するTh17細胞分化抑制剤。
[3]
フコキサンチン、フコキサンチノール又はそれらの誘導体を含有する、IL−17又はTh17細胞に関連する疾患又は状態の予防又は治療用組成物。
[4]
前記疾患又は状態が、自己免疫性疾患又は非感染性炎症性疾患、である、[3]に記載の組成物。
[5]
前記疾患又は状態が、関節リウマチ、全身性エリテマトーデス、多発性硬化症、乾癬、クローン病、潰瘍性大腸炎及び食物アレルギーからなる群から選択される、[4]に記載の組成物。
[6]
フコキサンチン、フコキサンチノール又はそれらの誘導体が海藻由来である、[1]〜[5]のいずれかに記載の剤又は組成物。
[7]
オクタデカテトラエン酸、エイコサペンタエン酸及びα−リノレン酸から選択されるω−3多価不飽和脂肪酸をさらに含有する、[6]に記載の剤又は組成物。
[8]
フコキサンチン、フコキサンチノール又はそれらの誘導体を、1g当り、乾燥物換算で、1mg〜100mg含有する、[1]〜[7]のいずれかに記載の剤又は組成物。
[9]
飲料であって、フコキサンチン、フコキサンチノール又はそれらの誘導体を、500mL当り、乾燥物換算で、5mg〜2500mg含有する、[1]〜[7]のいずれかに記載の剤又は組成物。
[10]
フコキサンチン、フコキサンチノール又はそれらの誘導体が、フコキサンチン、フコキサンチノール又はそれらの塩である、[1]〜[9]のいずれかに記載の剤又は組成物。
[11]
フコキサンチン、フコキサンチノール又はそれらの誘導体が、褐藻類のエタノール抽出物由来である、[1]〜[9]のいずれかに記載の剤又は組成物。
[12]
ナイーブT細胞からTh17細胞への分化を抑制することでIL−17産生を抑制する、[1]に記載のIL−17産生抑制剤。
[13]
ナイーブT細胞から制御性T細胞を誘導することでTh17細胞への分化を抑制する、[2]に記載のTh17細胞分化抑制剤。
[14]
フコキサンチン、フコキサンチノール又はそれらの誘導体を含有する免疫調節用組成物。
C57BL/6マウス(10週齢、雄、日本クレア生産)より脾臓を摘出後、400ユニット/mLのタイプIコラゲナーゼ(シグマ社製)及び10%FBS(ニチレイ社製)を含有するRPMI1640培地中で攪拌し、脾臓細胞を得た。その後、脾臓細胞を、CD4マイクロビーズ(ミルテニー・バイオテク社製)を含むMACSバッファー[0.5% BSA(シグマ社製)及び2mM EDTA含有PBS(pH7.2)]中に懸濁し、15分間、4℃でインキュベートを行った。脾臓細胞をMACSバッファーで洗浄後、MACSカラム(ミルテニー・バイオテク社製)によりCD4陽性細胞を分離・回収し、CD4陽性T細胞として試験に用いた。96ウェルマイクロプレート(BD社製)に50μLの5μg/mL 抗マウスCD3抗体(eBioscience社製)を分注し、4℃、15時間インキュベート後、PBSで2回洗浄し、上記のCD4陽性T細胞の培養に用いた。CD4陽性T細胞からTh17細胞を誘導するために、5μg/mL 抗マウスCD28抗体(eBioscience社製)、20ng/mL IL−6(R&D Systems社製)、2ng/mL TGF−β(R&D Systems社製)及び10%FBSを含有するRPMI1640培地中で5×105 cells/well(培養液量250μL)で培養した。
実施例1と同様の手法を用いてマウスより脾臓細胞を得た。その後、脾臓細胞よりMouse CD4+ T Cell Isolation Kit II(ミルテニー・バイオテク社製)を用いることで、CD4陽性T細胞を回収した。FITC標識抗マウスCD62L抗体(eBioscience社製)で細胞を標識後、FITCマイクロビーズ(ミルテニー・バイオテク社製)と共に15分間、4℃でインキュベートし、MACSバッファーにて洗浄後、MACSカラムによりCD62L陽性細胞を分離、回収した。これによりCD4陽性、CD62L陽性のナイーブT細胞を得た。得られたナイーブT細胞からTh17細胞を誘導するために、5μg/mL 抗マウスCD28抗体(eBioscience社製)、20ng/mL IL−6(R&D Systems社製)、2ng/mL TGF−β(R&D Systems社製)及び10%FBSを含有するRPMI1640培地中、5×105 cells/well(培養液量250μL)で培養した。
ワカメ抽出物の作製並びに抽出物中のフコキサンチン含量及び脂肪酸含量の測定を行った。乾燥ワカメ(粉末)30gに80%エタノールを200mL添加し、30分攪拌した。その後、吸引ろ過により上清を回収し、回収した上清をエバポレーターにより濃縮し、分析に用いるため、100%エタノール50mLに溶解した。分析値の結果を表に示す。ω−3多価不飽和脂肪酸である、オクタデカテトラエン酸、エイコサペンタエン酸及びα−リノレン酸ならびにフコキサンチン(36.6mg)が回収された。
Claims (6)
- フコキサンチン、フコキサンチノール又はそれらの塩若しくはエステルを含有する、IL−17又はTh17細胞に関連する疾患又は状態の予防又は治療用医薬組成物であって、前記疾患又は状態が、全身性エリテマトーデス及び多発性硬化症からなる群から選択される、医薬組成物。
- フコキサンチン、フコキサンチノール又はそれらの塩若しくはエステルが海藻由来である、請求項1に記載の医薬組成物。
- オクタデカテトラエン酸、エイコサペンタエン酸及びα−リノレン酸から選択されるω−3多価不飽和脂肪酸をさらに含有する、請求項2に記載の医薬組成物。
- フコキサンチン、フコキサンチノール又はそれらの塩若しくはエステルが、褐藻又は褐藻から作成した海藻溶液をエタノールで抽出した褐藻抽出物由来である、請求項1〜3のいずれか1項に記載の医薬組成物。
- フコキサンチン、フコキサンチノール又はそれらの塩若しくはエステルを、1g当り、乾燥物換算で、1mg〜100mg含有する、請求項1〜4のいずれか1項に記載の医薬組成物。
- フコキサンチン、フコキサンチノール又はそれらの塩若しくはエステルを、500mL当り、乾燥物換算で、5mg〜2500mg含有する、請求項1〜5のいずれか1項に記載の医薬組成物。
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