JP5238166B2 - インターロイキン12産生抑制剤 - Google Patents
インターロイキン12産生抑制剤 Download PDFInfo
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- JP5238166B2 JP5238166B2 JP2007024010A JP2007024010A JP5238166B2 JP 5238166 B2 JP5238166 B2 JP 5238166B2 JP 2007024010 A JP2007024010 A JP 2007024010A JP 2007024010 A JP2007024010 A JP 2007024010A JP 5238166 B2 JP5238166 B2 JP 5238166B2
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- BAQAVOSOZGMPRM-QBMZZYIRSA-N sucralose Chemical compound O[C@@H]1[C@@H](O)[C@@H](Cl)[C@@H](CO)O[C@@H]1O[C@@]1(CCl)[C@@H](O)[C@H](O)[C@@H](CCl)O1 BAQAVOSOZGMPRM-QBMZZYIRSA-N 0.000 description 1
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Landscapes
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Description
(1)ペプチドグリカン及びプロトプラスト
ラクトバチルス・カゼイ(YIT 9029)、ラクトバチルス・ジョンソニー(JCM 2012)、ラクトバチルス・プランタラム(ATCC 14917)は200mLのDifcoTM Lactobacilli MRS培地(BD社)を用いて37℃で20時間培養した。菌体は遠心分離(8000回転、10分)により集菌し、滅菌ミリQ水を用いて遠心洗浄を3回繰り返した後、20mLの滅菌ミリQ水に懸濁して、100℃で30分間の加熱処理をした後、凍結乾燥して加熱死菌体とした。
ラクトバチルス・カゼイ由来の細胞壁、ペプチドグリカン、細胞壁多糖、プロトプラストは以下に示すとおり調製した。500mgのラクトバチルス・カゼイ加熱死菌体を0.3%ドデシル硫酸ナトリウム溶液(50mL)に懸濁し、100℃で15分間熱処理した。菌体は遠心分離により集菌し、メタノール、メタノール−クロロホルム−ミリQ水(1:1:1)及びメタノール−クロロホルム(1:1)それぞれ50mLで順に処理して脱脂し、上清を除去した後、乾燥させた。続いて、菌体を50mMトリス塩酸緩衝液(pH7.5)に懸濁し、プロナーゼ(ロッシュ社)及びベンゾンヌクレアーゼ(メルク社)で処理してタンパク質、ペプチド及び核酸を分解した。遠心分離により不溶性画分を回収し、ミリQ水で3回遠心洗浄した後、凍結乾燥して細胞壁とした。細胞壁を47%フッ化水素溶液に懸濁し、4℃で20時間処理し、遠心分離により不溶性画分を回収し、ミリQ水で3回遠心洗浄した後、凍結乾燥してペプチドグリカンとした。また、遠心分離後の上清は、ミリQ水で透析した後、凍結乾燥して細胞壁多糖とした。また、500mgのラクトバチルス・カゼイ加熱死菌体を4mMの塩化マグネシウムを含む50mMトリスマレイト緩衝液(pH7.0、50mL)に懸濁し、M−1酵素(生化学工業)を添加して37℃で16時間反応させて、細胞壁を消化した。遠心分離により不溶性成分を回収し、リン酸緩衝化生理食塩水で3回洗浄した後、凍結乾燥し、プロトプラストとした。
ラクトバチルス・ジョンソニー及びラクトバチルス・プランタラムのペプチドグリカン及びプロトプラストは、ラクトバチルス・カゼイのものと同様に調製した。スタフィロコッカス・アウレウス由来のペプチドグリカンはインビボジェン社より、サッカロマイセス・セルビシエ由来のザイモサンはモレキュラープローブ社よりそれぞれ購入した。
日本SLC社より購入した9週齢のメスのBALB/cマウスの腹腔内に4%チオグリコレート(ディフコ社)溶液2mLを投与した。4日後に腹腔内に誘導されてくる細胞をハンクス溶液(シグマ社)10mLを用いて回収し、腹腔マクロファージとした。腹腔マクロファージはハンクス溶液で3回洗浄後、10%牛胎児血清を含むRPMI 1640培地(シグマ社)に懸濁した。96ウエル培養プレート(ヌンク社)に腹腔マクロファージ(1×105個/ウエル/0.2mL)をまき、ラクトバチルス・カゼイ加熱死菌体(10μg/mL)存在下で、細菌又は菌体処理物(10μg/mL)を添加して37℃で培養した。24時間後の培養上清を回収し、IL−12p70の濃度をELISAで定量した。ELISAでのIL−12p70の濃度の定量方法について以下に説明する。96ウエルELISAプレートに抗マウスIL−12抗体(クローン9A5、200倍希釈、ファーミンジェン社)を4℃で一晩吸着させた。1%牛血清アルブミンでブロッキングした後、10倍に希釈した培養上清又は標準IL−12p70(ファーミンジェン社)を添加して室温で90分間反応させた。0.05%トライトンX100を含むリン酸緩衝化食塩水で洗浄後、ビオチン標識抗マウスIL−12抗体(クローンC17.8、1000倍希釈、ファーミンジェン社)を添加して室温で90分間反応させた。0.05%トライトンX100を含むリン酸緩衝化食塩水で洗浄後、ストレプトアビジン標識ペルオキシダーゼ(20000倍希釈、セロテック社)を添加して室温で30分間反応させた。0.05%トライトンX100を含むリン酸緩衝化食塩水で洗浄後、TMB試薬を添加して室温で10分間反応させ、1N硫酸を加えて反応を停止し、450nmの吸光値を測定した。標準IL−12p70から検量線を作成し、培養上清中の濃度を算出した。
マウス腹腔マクロファージ培養系を用いて、ラクトバチルス・カゼイ加熱死菌体、同菌より調製した細胞壁、ペプチドグリカン、細胞壁多糖、プロトプラストのIL−12産生抑制効果を調べたところ、加熱死菌体、細胞壁、細胞壁多糖はIL−12産生を抑制しなかったが、ペプチドグリカン及びプロトプラストはIL−12産生を抑制した(図1)。また、マクロファージ培養系に、ペプチドグリカン及びプロトプラストを単独で添加した(IL−12過剰産生状態でない)場合は、IL−12産生はほとんど誘導されなかった(図2)。
下記の処方で各種成分を混合して造粒、乾燥、整粒した後に、打錠して錠剤を製造した。
(処方) (mg)
ペプチドグリカン 20
微結晶セルロース 100
乳糖 80
ステアリン酸マグネシウム 0.5
メチルセルロース 12
下記の処方で処方したものを加熱殺菌後、褐色瓶にホットパック充填を行い、清涼飲料水を得た。
(処方) (g)
ザイモサン 0.8
香料 0.8
クエン酸 0.2
果糖 4
スクラロース 0.001
水 94.199
15%脱脂乳に3%グルコースを添加し、120℃で3秒間殺菌した後、ラクトバチルス・カゼイ(Lactobacillus casei)YIT 9029株を1%接種し、37℃でpH3.6まで培養してヨーグルトベース210gを得た。一方、砂糖97g、クエン酸鉄0.2g、ペプチドグリカン1gを水に溶解し、水を加え全量を790gとし、この溶液を110℃で3秒間殺菌し、シロップを得た。上記のようにして得られたヨーグルトベースとシロップを混合し、香料を1g添加した後、15Mpaで均質化して容器に充填して発酵乳製品を得た。この発酵乳製品中のラクトバチルス・カゼイの初発菌数は108cfu/mLであった。
Claims (2)
- ラクトバチルス・カゼイ、ラクトバチルス・プランタラム若しくはラクトバチルス・ジョンソニーから調製されるペプチドグリカン又はプロトプラスト、又は、スタフィロコッカス・アウレウスから調製されるペプチドグリカンを有効成分とするインターロイキン12産生抑制剤。
- インターロイキン12過剰産生に起因する疾患用である請求項1記載のインターロイキン12産生抑制剤。
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