JP6704990B2 - インターフェロンλ産生促進用組成物及びその製造方法 - Google Patents
インターフェロンλ産生促進用組成物及びその製造方法 Download PDFInfo
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- JP6704990B2 JP6704990B2 JP2018510622A JP2018510622A JP6704990B2 JP 6704990 B2 JP6704990 B2 JP 6704990B2 JP 2018510622 A JP2018510622 A JP 2018510622A JP 2018510622 A JP2018510622 A JP 2018510622A JP 6704990 B2 JP6704990 B2 JP 6704990B2
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Description
1.ストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物を有効成分として含有する、インターフェロンλ産生促進用組成物。
2.前記インターフェロンλ産生促進用組成物は、BDCA3DCに対するインターフェロンλ産生促進用組成物である、前記1に記載のインターフェロンλ産生促進用組成物。
3.前記インターフェロンλは、インターフェロンλ3である、前記1又は2に記載のインターフェロンλ産生促進用組成物。
4.前記菌体、前記菌体成分及び前記培養物は、それぞれ核酸を含有する菌体、菌体成分及び培養物である、前記1〜3のいずれか1に記載のインターフェロンλ産生促進用組成物。
5.前記ストレス条件下で培養が可能である乳酸菌は、菌体1×1010cfuあたり15,000ng/ml以上の二本鎖RNAを含有する乳酸菌及び菌体1×1010cfuあたり総核酸中の二本鎖RNAの割合が3.5%以上である乳酸菌の少なくとも一方である、前記4に記載のインターフェロンλ産生促進用組成物。
6.前記インターフェロンλ産生促進用組成物が、インターフェロンλ産生促進用腸溶組成物である、前記1〜5のいずれか1に記載のインターフェロンλ産生促進用組成物。
7.前記1〜6のいずれか1に記載のインターフェロンλ産生促進用組成物を含有する飲食品。
8.ストレス条件下で培養が可能である乳酸菌を培養して、該乳酸菌の菌体、菌体成分又は培養物を得ることを含む、インターフェロンλ産生促進用組成物の製造方法。
9.ストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物を使用してインターフェロンλの産生を促進する方法。
10.インターフェロンλ産生促進用組成物の製造のためのストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物の使用。
11.インターフェロンλの産生を促進するためのストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物の使用。
テトラジェノコッカス属に属する乳酸菌を使用し、インターフェロンλ産生促進試験を実施した。
乳酸菌としてテトラジェノコッカス・ハロフィラスKK221株(Tetragenococcus halophilus Th221、以下、KK221株とよぶ。)を使用した。本出願人は、KK221株を下記の条件で寄託した。
(1)寄託機関名:独立行政法人製品評価技術基盤機構 特許生物寄託センター
(2)連絡先:〒305−8566 茨城県つくば市東1丁目1番地1 中央第6
(現:千葉県木更津市かずさ鎌足2−5−8 120号室)
電話番号0438−20−5580
(3)受託番号:FERM BP−10987
(4)識別のための表示:Tetragenococcus halophilus Th221
(5)原寄託日:2007年6月25日
(6)ブダペスト条約に基づく寄託への移管日:2008年7月16日
調製した乳酸菌懸濁液のインターフェロンλの産生促進活性を、非ウイルス感染健常者の末梢血より採取及び調製した樹状細胞を用いて以下のとおりに評価した。
非ウイルス感染健常者の末梢血200mlから低密度勾配遠心法により単核球として、磁気細胞分離システム(Miltenyi Biotec社)、セルソーター(BD社)を用いて樹状細胞(Dendritic cell;DC)を単離した。なお、樹状細胞は、BDCA4陽性であるplasmacytoid DC(pDC);BDCA1が陽性であり、かつ、CD19が陰性であるmyeloid cell type1(mDC1);及び、BDCA3が陽性であるmyeloid cell type2(BDCA3DC)の3種の表現型サブセットで単離した。
回収した培養上清を用いて、インターフェロンλ3を化学発光酵素免疫測定法により、スギヤマらの文献[Sugiyama M et al.Hepatol Res.42(11):1089−1099、2012]に記載の方法に準じて測定した。
1.RNaseA処理
KK221株を10mM Tris−HCl(pH8.0)を用いて5×109個/mlとなるように懸濁し、10μg/mlとなるように牛膵臓由来RNaseA(Sigma社)をさらに添加して、RNaseA含有菌懸濁液を調製した。
RNA分解乳酸菌懸濁液又は例1で調製した未処理乳酸菌混濁液と、例1で調製したBDCA3DCとを一定の割合で混合し(BDCA3DC数:乳酸菌数=1:100)、これらの共培養を行った。共培養後の上清を培養開始24時間後に回収し、例1と同様にして化学発光酵素免疫測定法により、上清中のインターフェロンλ濃度を測定した。結果を図3に示す。
乳酸菌の構成成分を認識すると想定されるBDCA3DCにおけるToll様受容体(TLR)に着目し、エンドソームへの取り込みを阻害し、細胞質内に存在するTLR3への会合を阻害するクロロキン、もしくは2本鎖RNAを認識するTLR3を介するシグナル伝達のアダプター分子であるTRIFの阻害剤(製品名「TRIF/TICAM1 Peptide」;NOVUS社)を用いて、インターフェロンλ産生促進活性を評価した。
KK221株に加えて、インターフェロンλ産生を誘導することが知られるラクトコッカス・ラクティス(Lactococcus lactis)に属するJCM20101株及びJCM5805株(特許文献1)を使用し、インターフェロンλ産生促進試験を実施した。
例1に準じて、KK221株を用いて調製した乳酸菌懸濁液又はPoly ICとBDCA3DCとを、乳酸菌数/DC数=100になるように調製して共培養することにより、各種サイトカイン産生促進活性の測定を実施した。
KK221株、JCM20101株及びJCM5805株の生菌数あたりの二本鎖RNA(以下dsRNAとも略す)量、総核酸量及び総核酸中の二本鎖RNAの割合(dsRNA量/総核酸量×100)を以下のとおりに測定した。
KK221株、JCM20101株及びJCM5805株の乾燥菌体量あたりのdsRNA量、総核酸量及び総核酸中の二本鎖RNAの割合を以下のとおりに測定した。
培養殺菌処理液の5×109cfu相当液量を用いた以外は、例6と同様にして、各種乳酸菌の生菌数あたりの二本鎖RNA量を測定した。
Claims (11)
- ストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物を有効成分として含有する、インターフェロンλ産生促進用組成物であって、
前記乳酸菌は、テトラジェノコッカス・ハロフィラス(Tetragenococcus halophilus)KK221株(FERM BP−10987)である、前記インターフェロンλ産生促進用組成物。 - 前記インターフェロンλ産生促進用組成物は、BDCA3DCに対するインターフェロンλ産生促進用組成物である、請求項1に記載のインターフェロンλ産生促進用組成物。
- 前記インターフェロンλは、インターフェロンλ3である、請求項1又は2に記載のインターフェロンλ産生促進用組成物。
- 前記菌体、前記菌体成分及び前記培養物は、それぞれ核酸を含有する菌体、菌体成分及び培養物である、請求項1〜3のいずれか1項に記載のインターフェロンλ産生促進用組成物。
- 前記ストレス条件下で培養が可能である乳酸菌は、菌体1×1010cfuあたり15,000ng/ml以上の二本鎖RNAを含有する乳酸菌及び菌体1×1010cfuあたり総核酸中の二本鎖RNAの割合が3.5%以上である乳酸菌の少なくとも一方である、請求項4に記載のインターフェロンλ産生促進用組成物。
- 前記インターフェロンλ産生促進用組成物が、インターフェロンλ産生促進用腸溶組成物である、請求項1〜5のいずれか1項に記載のインターフェロンλ産生促進用組成物。
- 請求項1〜6のいずれか1項に記載のインターフェロンλ産生促進用組成物を含有するインターフェロンλ産生促進用飲食品。
- ストレス条件下で培養が可能である乳酸菌を培養して、該乳酸菌の菌体、菌体成分又は培養物を得ることを含む、インターフェロンλ産生促進用組成物の製造方法であって、
前記乳酸菌は、テトラジェノコッカス・ハロフィラス(Tetragenococcus halophilus)KK221株(FERM BP−10987)である、前記製造方法。 - ストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物を使用してインターフェロンλの産生を促進する方法(ただし、ヒトへの投与を除く)であって、
前記乳酸菌は、テトラジェノコッカス・ハロフィラス(Tetragenococcus halophilus)KK221株(FERM BP−10987)である、前記方法。 - インターフェロンλ産生促進用組成物の製造のためのストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物の使用であって、
前記乳酸菌は、テトラジェノコッカス・ハロフィラス(Tetragenococcus halophilus)KK221株(FERM BP−10987)である、前記使用。 - インターフェロンλの産生を促進するためのストレス条件下で培養が可能である乳酸菌の菌体、菌体成分又は培養物の使用(ただし、ヒトへの投与を除く)であって、
前記乳酸菌は、テトラジェノコッカス・ハロフィラス(Tetragenococcus halophilus)KK221株(FERM BP−10987)である、前記使用。
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