JP6266848B2 - スイカスプラウト由来物質を主成分とする加工食品と医薬組成物 - Google Patents
スイカスプラウト由来物質を主成分とする加工食品と医薬組成物 Download PDFInfo
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- JP6266848B2 JP6266848B2 JP2017527000A JP2017527000A JP6266848B2 JP 6266848 B2 JP6266848 B2 JP 6266848B2 JP 2017527000 A JP2017527000 A JP 2017527000A JP 2017527000 A JP2017527000 A JP 2017527000A JP 6266848 B2 JP6266848 B2 JP 6266848B2
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- hexane
- sprout
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- watermelon
- extract
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Description
本発明において、スイカとは、学名Citrullus lanatusである、ウリ科のツル性一年草をいう。野生種であってもよい。また、品種改良されたものであってもよい。特に、「祭ばやし777」や「春のだんらん」といった品種が好適に利用できる。
フィトール(C20H40O;CAS登録番号:7541−49−3)とルテイン(C40H56O2;CAS登録番号127−40−2)を、それぞれ(1)式、(2)式に示す。
本発明に係る加工食品は、本発明の効果成分が主成分として含まれる。加工食品としての形態としては、飴、ビスケット、クッキー、煎餅、パン、麺、魚肉・畜肉練製品、茶、清涼飲料、乳飲料、乳清飲料、乳酸菌飲料、ヨーグルト、アイスクリーム等といった一般加工食品だけでなく、軟エキス剤、乾燥エキス剤、カプセル剤、顆粒剤、散剤、錠剤、液剤、浸剤、煎剤、トローチ剤、流エキス剤、チンキ剤といったエキス剤や、アルコール飲料を含んでもよい。
本発明に係る医薬組成物は、本発明の効果成分が主成分として含まれる。薬剤の形態としては、カプセル剤、顆粒剤、溶液、乳濁液、懸濁液、散剤、錠剤、液剤、浸剤、煎剤、トローチ剤、流エキス剤、チンキ剤、点眼剤、点鼻液、軟膏、クリーム、ローション剤、注射剤、座薬等を含む。
スイカCS種スプラウト3kg(湿重量)を粉砕し、この粉砕物にエタノールを5L加え、攪拌しながら常温にてエタノール溶出物を調製した。この操作を三度繰り返した。溶出液は、ロータリーエバポレーターを用いて減圧下で濃縮乾固した。
ヒト白血病T細胞株Jurkat細胞は、独立行政法人理化学研究所バイオリソースセンター(つくば市、茨城県)より入手した。10%牛胎児血清(Thermo Fisher Scientifics、K.K.、MA、USA)、100U/mLペニシリンおよび100μg/mLスプレトマイシン(共にLife Technologies、 Carlsbad、CA、USA)を含んだRPMI1640培地(和光純薬工業株式会社、大阪市、大阪府)により37℃、95%空気−5%CO2環境下で培養した。
Jurkat細胞を1×105 cells/mLに調整し、24ウェルマルチプレート(Thermo Fisher Scientifics K.K.)に500μL/wellずつ播種した。播種後、スイカスプラウトエタノール溶出物(EtOH Fr.)を終濃度が10、25、50、100、200、300μg/mLになるように、ヘキサン(Hexane Fr.)、酢酸エチル(EtOAc Fr.)、ブタノール(n−BuOH Fr.)および蒸留水溶解物(Water Fr.)を終濃度が25、50、100μg/mLになるようにそれぞれ処理し、培養した。サンプル処理24、48、72時間後に細胞をトライパンブルー(Life Technologies)で染色し、血球計算盤を用いて生細胞を計数した。
Jurkat細胞を(1×105 cells/mLに調整済み)6wellプレートに1wellあたり3mL播種し、2時間の前培養を行った。2時間の前培養後、終濃度が10μg/mLになるようにヘキサン画分を添加し、培養した。培養12、24、48および72時間後に細胞を回収し、PBSにて2度洗浄後、70%エタノールを加え−20℃にて一晩固定した。
ヒト正常リンパ球細胞はヒト末梢血をFicoll密度勾配分離法(Ficoll−paque PLUS,GE healthcare UK Ltd.,England)により調製した。1×105 cells/mLに調整し、96ウェルマルチプレート(Thermo Fisher Scientifics K.K.)に100μL/wellずつ播種した。播種後、スイカスプラウトヘキサン溶出物を終濃度が10μg/mLになるように処理し、培養した。サンプル処理48時間後に細胞をトライパンブルー(Life Technologies)で染色し、血球計算盤を用いて生細胞を計数した。
ヘキサン溶解物の中の効果成分を単離した。図2に経過図を示す。図1で示したヘキサン溶解物(Hexane Fr.)10gをシリカゲルクロマトグラフィーに供し、ヘキサン(Hex):ジクロロメタン(DCM)=1:1、1:2、ジクロロメタン、ジクロロメタン:酢酸エチル=5:1で溶出し、6つの画分(Fr.1〜Fr.6)に分けた。図2中では、SiO2CC(Hex/DCM=1/1→1/2→DCM→DCM/EtOAc=5/1)と示した。「SiO2CC」はシリカゲルクロマトグラフィーのことである。
ヒト子宮頸ガン細胞株HeLa細胞、ヒト肺胞基底上皮腺ガン細胞A549細胞、ヒト胃がん細胞株KATOIII細胞、ヒト子肝臓ガン細胞株HepG2細胞をそれぞれ1×105 cells/mLに調整し、96ウェルマルチプレート(Thermo Fisher Scientifics K.K.)に100μL/wellずつ播種した。播種後、終濃度が2.5、5、10、25、50、100、200μg/mLになるように、ヘキサン溶出物(Hexane Fr.)を添加し、培養した。
生細胞数(%)={(ヘキサン処理したガン細胞のA440)/(無処理のガン細胞のA440)}×100
[スイカスプラウトエタノール溶出物によるヒト白血病T細胞株Jurkat細胞の増殖への影響]
Jurkat細胞にスイカスプラウトエタノール溶出物(EtOH Fr.)を終濃度が10、25、50、100、200、300μg/mLになるように処理した。結果を図3に示す。横軸は処理時間(時間)であり、縦軸は生存細胞数(105×cell/mL)である。処理48時間後から300μg/mL処理細胞群(符号300)において無処理群(符号000)と比較して有意に増殖が抑制されることを確認した。
エタノール溶出物を濃縮乾固したものを蒸留水にて再溶解後、ヘキサン(Hexane Fr.)(図4(b))、酢酸エチル(EtOAc Fr.)(図4(c))、ブタノール(n−BuOH Fr.)(図4(d))を用いて溶媒分配法により各溶解物および蒸留水再溶解物(Water Fr.)(図4(a))を調製した。なお、これらの溶解物は抽出画分と呼んでもよい。
ヘキサン抽出画分にJurkat細胞に対する強い増殖抑制効果が見られたので、ヘキサン抽出画分の濃度を下げてJurkat細胞に対する増殖抑制効果を調べた。その結果を、図5に示す。図5は、横軸が処理時間(時間)であり、縦軸は、生存細胞数(105×cell/mL)である。
ヘキサン抽出画分処理によるJurkat細胞の細胞周期への影響を検討した。結果を図6に示す。図6(a)は、Sub−G1期、図6(b)はG0/G1期、図6(c)はS期、図6(d)はG2/M期である。各グラフは横軸が処理時間(時間)であり、縦軸は細胞数(全数)に対する計測比率(%)である。
Hexane Fr.(ヘキサン抽出画分)を分取HPLCにより単離したところ、主たる成分として、フィトール(phytol)、ルテイン(lutein)、22デヒドロコレステロール(22−dehydrocholesterol)およびリノレン酸(linolenic acid)を検出した。これらの成分を用いてJurkat細胞の増殖抑制効果を検討した。それぞれの成分で終濃度が10、25、50μMになるようにJurkat細胞を処理し、24、48、72時間後に細胞を計数した。
WST−1法により各種ガン細胞の増殖抑制効果を検討したところ、表1のようにIC50値を得た。ガン細胞に対する感受性は多少差が見られたが、いずれのガン細胞に対しても有効な効果を示すことが示唆された。
Claims (6)
- スイカスプラウトのヘキサン抽出画分を主成分とする癌細胞増殖阻害剤。
- スイカスプラウトのヘキサン抽出画分を主成分とする加工食品。
- スイカスプラウトを洗浄、破砕する前処理工程と、
破砕した前記スイカスプラウトを非極性抽出溶媒に浸漬させ抽出液を得る工程と、
抽出液を濾過する工程を含むことを特徴とする癌細胞増殖阻害剤の製造方法。 - 前記抽出液を得る工程は、
破砕した前記スイカスプラウトをエタノールに溶出させる工程と、
前記エタノールの溶出物をさらに蒸留水で再溶解させる工程と、
前記蒸留水の溶解物をヘキサンに溶解させる工程を含むことを特徴とする請求項3に記載された癌細胞増殖阻害剤の製造方法。 - スイカスプラウトを洗浄、破砕する前処理工程と、
破砕した前記スイカスプラウトを非極性抽出溶媒に浸漬させ抽出液を得る工程と、
抽出液を濾過する工程を含むことを特徴とする加工食品の製造方法。 - 前記抽出液を得る工程は、
破砕した前記スイカスプラウトをエタノールに溶出させる工程と、
前記エタノールの溶出物をさらに蒸留水で再溶解させる工程と、
前記蒸留水の溶解物をヘキサンに溶解させる工程を含むことを特徴とする請求項5に記載された加工食品の製造方法。
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JP2003061615A (ja) * | 2001-08-27 | 2003-03-04 | Niigata Prefecture | テロメラーゼ阻害剤及び食品組成物 |
JP2005206495A (ja) * | 2004-01-21 | 2005-08-04 | Univ Nihon | 癌の予防のための健康食品及び医薬組成物 |
WO2005105126A1 (ja) * | 2004-04-30 | 2005-11-10 | National University Corporation NARA Institute of Science and Technology | 野生種スイカ抽出物を含有する活性酸素消去剤ならびに保湿剤 |
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JP2003061615A (ja) * | 2001-08-27 | 2003-03-04 | Niigata Prefecture | テロメラーゼ阻害剤及び食品組成物 |
JP2005206495A (ja) * | 2004-01-21 | 2005-08-04 | Univ Nihon | 癌の予防のための健康食品及び医薬組成物 |
WO2005105126A1 (ja) * | 2004-04-30 | 2005-11-10 | National University Corporation NARA Institute of Science and Technology | 野生種スイカ抽出物を含有する活性酸素消去剤ならびに保湿剤 |
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J. L. JEFFERY AND S. R. KING: "A New Approach to Nutritive Analysis Using Watermelon as a Case Study", ACTA HORTICULTURAE, vol. No.841, JPN6017011230, August 2009 (2009-08-01), pages 533 - 536 * |
MULLER, KARIN ET AL.: "Carotenoids Induce Apoptosis in the T-lymphoblast Cell Line Jurkat E6.1", FREE RADICAL RESEARCH, vol. 36, no. 7, JPN6017005534, 2002, pages p.791-802,ISSN 1071-5762, XP055402076, DOI: doi:10.1080/10715760290032539 * |
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YAMAMOTO YUKIHIRO ET AL.: "Preparation of Phosphatidylated Terpenes via Phospholipase D-Mediated Transphophatidylation", JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY, vol. 85, no. 4, JPN6017005539, April 2008 (2008-04-01), pages p.313-320,特に抄録,p.313右欄第1-5行, XP055402105, DOI: doi:10.1007/s11746-008-1206-1 * |
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US20190343909A1 (en) | 2019-11-14 |
CN108601756B (zh) | 2021-03-05 |
WO2017131175A1 (ja) | 2017-08-03 |
JPWO2017131175A1 (ja) | 2018-02-01 |
CN108601756A (zh) | 2018-09-28 |
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