JP4337986B2 - ウイルス関連悪性腫瘍治療剤 - Google Patents
ウイルス関連悪性腫瘍治療剤 Download PDFInfo
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- JP4337986B2 JP4337986B2 JP2006190076A JP2006190076A JP4337986B2 JP 4337986 B2 JP4337986 B2 JP 4337986B2 JP 2006190076 A JP2006190076 A JP 2006190076A JP 2006190076 A JP2006190076 A JP 2006190076A JP 4337986 B2 JP4337986 B2 JP 4337986B2
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- fucoxanthin
- fucoxanthinol
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Description
フコキサンチンの調製:
細切した乾燥ホンダワラ3.15Kgを、メタノール20Lを用い、室温、18時間の条件で2回抽出した、抽出液を1Lまで濃縮し、ヘキサン800mLで2回分配した。メタノール層を濃縮し、HP20カラム(φ55×150mm)に添加し、メタノール1.5Lおよびアセトン600mLで溶出した。メタノール溶出液を濃縮し、HW40Fカラム(φ30×500mm)に添加し、メタノールで溶出した。フコキサンチン画分を濃縮し、90%メタノールからの再結晶操作を2回行い、精製フコキサンチンを200mg得た。HPLCおよび1H−NMRスペクトルにより95%以上の純度であること確認し、NMRおよびMSスペクトルによりその化学構造を確認した。以下の実施例では、この精製フコキサンチンをフコキサンチンとして用いた。
フコキサンチノールの調製:
参考例1で得たフコキサンチン精製品100mgをアセトン2mLに溶解した。一方、リパーゼとして、Candidarugosa由来のリパーゼ(Sigma社)2gを用い、これを0.1Mリン酸緩衝液(pH7.0)22.5mLに溶解した。両溶液を混ぜ合わせ、37℃で18時間加温した。反応液をろ過し、溶媒除去した後、残渣をアセトン50mLで抽出し、フコキサンチン反応物を回収した。反応物について再度、上記のリパーゼ反応を行った。フコキサンチン反応物をHPLC(ナカライテスク製CosmosilODS5C18−AR−II20×250mm、80%MeOH、5mL/min)により分離・精製を行い、フコキサンチノール精製物を得た。HPLCおよび1H−NMRスペクトルにより95%以上の純度であること確認し、NMRおよびMSスペクトルにより化学構造を確認した。以下の実施例では、この精製フコキサンチノールをフコキサンチノールとして用いた。
ウイルス感染細胞株増殖能の測定:
( 方 法 )
それぞれ、10%牛胎児血清加RPMI1640培地により2×105個/mLに調整したHTLV−I感染T細胞株(MT−2、MT−4、HUT−102、ED−40515(−))、EBV感染B細胞株(Raji、Daudi、B95−8/BJAB、B95−8/Ramos、LCL−Ka、LCL−Ku)、子宮頚癌細胞株(HeLa)、慢性骨髄性白血病細胞株(K−562)を、細胞数が1×104個/穴となるように、96穴プレートに蒔いた。
細胞生存率(%)= [ 1 − (A − B)/A ] × 100
A:薬剤無処理時の吸光度
B:薬剤処理時の吸光度
フコキサンチンおよびフコキサンチノールが、HTLV−I感染T細胞株やEBV感染B細胞株の増殖能に与える影響を図1および図2に示した。この結果から明らかなように、フコキサンチンおよびフコキサンチノールは、濃度依存性にすべてのHTLV−I感染T細胞株とEBV感染BL細胞株の増殖を抑制した。また、これら細胞株の増殖抑制能は、フコキサンチンに比べ、フコキサンチノールのほうが有意に高かった。
健常人および成人T細胞白血病(ATL)患者末梢血単核球の増殖能の測定
まず、末梢血単核球(PBMC)をフィコール(Ficol)遠心比重法により分離し、これを10%牛胎児血清加RPMI1640培地を用いて2×106/mLに調整した後、細胞数が1×105個/穴となるように、96穴プレートに蒔いた。
フコキサンチンおよびフコキサンチノールが、健常人(1名)のPBMCおよび成人T細胞白血病(ATL、5名)患者のPBMCの増殖能に与える影響を図4に示した。この結果から明らかなように、フコキサンチンおよびフコキサンチノールはATL患者白血病細胞に対しても濃度依存性に増殖抑制効果を認めたが、健常人のPBMCに対する毒性は認められなかった。また、フコキサンチンに比べ、フコキサンチノールのほうが増殖能に及ぼす影響は強かった。
HTLV−I感染細胞株の細胞周期測定
( 方 法 )
HTLV−I感染細胞株(MT−2、MT−4、HUT−102、ED−40515(−))を、1×106細胞でセルカルチャープレートに蒔き、これにフコキサンチンを5μMで添加し、37℃で24時間培養した。24時間後に細胞を回収し、これをヨウ化プロピジウムで染色後、フローサイトメーターにてDNA含量を測定した。このDNA含量の結果から、各細胞周期の細胞群の分布を算出することにより、各細胞の細胞周期を判定した。
フコキサンチンが、HTLV−I感染細胞株の細胞周期に与える影響を図5に示した。
この結果、GI期の細胞群が増加していたことから、フコキサンチンはすべてのHTLV−I感染細胞株の細胞周期をG1期で停止させたことが示された。
HTLV−I感染細胞株のアポトーシス測定
( 方 法 )
HTLV−I感染細胞株(MT−2、MT−4、HUT−102、ED−40515(−))を、1×106細胞でセルカルチャープレートに蒔き、これに、種々の濃度のフコキサンチン(10、5、2.5μM)あるいはフコキサンチノール(10、5、2.5、1.25、0.625μM)を添加し、37℃で24時間培養した。24時間後に細胞を回収し、アネキシンVで染色後、フローサイトメーターを用い、アポトーシス陽性細胞率(%)を測定した。
フコキサンチノールが、HTLV−I感染細胞株のアポトーシスに与える影響を図6に、フコキサンチンおよびフコキサンチノールの濃度と、MT−2のアポトーシスの関係を図7および図8に示した。この結果からフコキサンチンはすべてのHTLV−I感染細胞株にアポトーシスを誘導し(図6)、その作用は濃度依存性であることが示された(図7)。また、フコキサンチノールもHTLV−I感染細胞株であるMT−2にアポトーシスを誘導し、その効果はフコキサンチンに比べ強いことが示された(図8)。
Claims (3)
- フコキサンチノールを有効成分とし、経口投与形態であるウイルス関連悪性腫瘍治療剤。
- 成人T細胞白血病またはバーキットリンパ腫を治療するものである請求項第1項記載のウイルス関連悪性腫瘍治療剤。
- フコキサンチノールを大人一人当たり一日量として、0.05mgないし100mg投与する形態の請求項第1項または第2項記載のウイルス関連悪性腫瘍治療剤。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006190076A JP4337986B2 (ja) | 2006-07-11 | 2006-07-11 | ウイルス関連悪性腫瘍治療剤 |
| US11/681,488 US20080015252A1 (en) | 2006-07-11 | 2007-03-02 | Therapeutic agent for virus-associated malignancy |
| US12/755,150 US20100197782A1 (en) | 2006-07-11 | 2010-04-06 | Therapeutic agent for virus-associated malignancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006190076A JP4337986B2 (ja) | 2006-07-11 | 2006-07-11 | ウイルス関連悪性腫瘍治療剤 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008019174A JP2008019174A (ja) | 2008-01-31 |
| JP4337986B2 true JP4337986B2 (ja) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006190076A Active JP4337986B2 (ja) | 2006-07-11 | 2006-07-11 | ウイルス関連悪性腫瘍治療剤 |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US20080015252A1 (ja) |
| JP (1) | JP4337986B2 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231198A (ja) * | 2007-03-19 | 2008-10-02 | Hokkaido Univ | フコキサンチンを含有する脂溶性油及びその製造方法並びにフコキサンチンの製造方法 |
| JP5516894B2 (ja) * | 2008-09-22 | 2014-06-11 | 国立大学法人 鹿児島大学 | 成人t細胞白血病治療薬 |
| EP2918278A1 (en) * | 2014-03-14 | 2015-09-16 | Greenaltech S.L. | Algal extracts comprising fucoxanthin and fucoxanthinol |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030206972A1 (en) * | 2000-10-13 | 2003-11-06 | Babish John G. | Compositions containing carotenoids and tocotrienols and having synergistic antioxidant effect |
| US20040219629A1 (en) * | 2002-12-19 | 2004-11-04 | Qiong Cheng | Increasing carotenoid production in bacteria via chromosomal integration |
-
2006
- 2006-07-11 JP JP2006190076A patent/JP4337986B2/ja active Active
-
2007
- 2007-03-02 US US11/681,488 patent/US20080015252A1/en not_active Abandoned
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2010
- 2010-04-06 US US12/755,150 patent/US20100197782A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008019174A (ja) | 2008-01-31 |
| US20080015252A1 (en) | 2008-01-17 |
| US20100197782A1 (en) | 2010-08-05 |
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