JP2016501224A - 蘚苔地衣類組成物、その作製方法及び使用 - Google Patents
蘚苔地衣類組成物、その作製方法及び使用 Download PDFInfo
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- JP2016501224A JP2016501224A JP2015545195A JP2015545195A JP2016501224A JP 2016501224 A JP2016501224 A JP 2016501224A JP 2015545195 A JP2015545195 A JP 2015545195A JP 2015545195 A JP2015545195 A JP 2015545195A JP 2016501224 A JP2016501224 A JP 2016501224A
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Abstract
Description
本出願は、2012年11月27日出願の米国特許仮出願第61/730,227号の利益を主張する。この特許仮出願は、参照によりその全体が本明細書に組み込まれる。
本出願の発明は米国国立老化研究所及び国立衛生研究所認可番号SR44AG034760に基づく連邦政府による支援により実施された。
15cm 5ミクロンPhenomenex Luna PFP(2)カラム(UPS Packing L43)及び50マイクロリットルの85%H3PO4/リットルで酸性化した60%アセトニトリル移動相を使って、HPLCでブリオスタチン−1を分析した。流量を1.0mL/分に設定し、カラム温度を30℃に設定した。Model 996アレイ検出器を組み込んだWatersのMillenniumシステムを使ってクロマトグラフスキャンを生成した(図1)。ブリオスタチン−1を265nmで測定し、195nm〜345nmの等高線図を同時に記録した。
最初の2つのステップで、イソプロパノール、メタノール、酢酸エチル、及び水などの有機溶媒を使い、続けて、ヘキサン/塩化メチレン及び酢酸エチル/メタノールからなる移動相を使ってシリカクロマトグラフィーにより湿ったフサコケムシからブリオスタチンを抽出するか、あるいは、洗浄、乾燥、粉砕したフサコケムシにSuperFluids(登録商標)(臨界点近傍及び超臨界流体ならびに共溶媒を含有又は非含有で)、二酸化炭素、メタノールを加えて抽出し、二酸化炭素とメタノールを使ってSuperFluids(登録商標)シリカクロマトグラフィーにより精製する(Castor,1998,2001)。
精製手順と結果
米国国立癌研究所(NCI)から提供を受けたフサコケムシの酢酸エチル抽出物(試料C−021519#7)を出発原料として使用した。合計約57gのEA抽出物をジクロロメタン(DCM)に溶解し、アッセイしてブリオスタチン−1及びその他の蘚苔地衣類の存在を測定した。ここで図2を見ると、フサコケムシのEA粗製抽出物のHPLCクロマトグラムが示されている。標識矢印は、ブリオスタチン様化合物の内部識別番号を示す。これらの化合物には、B10、B12、及びブリオスタチン3(B16)、ならびにブリオスタチン−2(Bryo−2)及びブリオスタチン−3(Bryo−3)が含まれる。ブリオスタチン−1(Bryo−1)は、24.2分で溶出する。表記B10は、本発明の第1の蘚苔地衣類に対応する蘚苔地衣類である。表記B14は、本発明の第3と第4の蘚苔地衣類を生ずる。
図3に略述した各精製ステップで、Luna C18(2)カラム(250x4.6mm、10μm)を使ってブリオスタチン−1を測定した。リン酸で酸性化した80%アセトニトリル(ACNP)を2mL/分の流量を使って、無勾配モードで溶出を行った。カラム温度を30℃に設定した。
フサコケムシを分画し、ブリオスタチン−1の代替物として機能する可能性のあるブリオスタチン画分(蘚苔地衣類)を作製した。これらの画分を精製し、インビトロ分析を行うためにLSUに送付した(表1)。
図4に示すs−APPα分泌の誘導におけるいくつかのブリオスタチン−1類似体(蘚苔地衣類)の有効性画分Dを除いて、それらは全て、ブリオスタチン−1に比べて大きなs−APPα放出を誘導した。ブリオスタチン−1に対する最良の代替画分は、類似体Eで、これは表記B16に対応し、ブリオスタチン3であると特定された。生物活性は、次の画分の順であった:E(105)>G(112)、F(106)、C(103)>A(101)、B(102)>D(104)。
ここで、265nmでの蘚苔地衣類混合物の高速液体クロマトグラフを示す図5に目を向けると、種々の蘚苔地衣類がフサコケムシEA粗製抽出物中に存在する。
異なる蘚苔地衣類のキャラクタリゼーションは、島津HPLCシステムを備えたLC/MS/MS API2000システムを使って行った。Q1スキャンパラメータを700〜1000Amuスキャンのブリオスタチン−1 m/z 427[M+Na]用に最適化した(図8−1)。その他の画分の質量スペクトルスキャンは、図8−2〜8−7に示す。個別蘚苔地衣類及び蘚苔地衣類混合物を含む全部で7種の画分を分析した(表2)。
ブリオスタチン−1で観察されたLC/MS/MSデータは、927Amuにピークを示し、これは[M+NA]に相当し、文献で既に報告されている(Manningら,2005)。ブリオスタチン−1〜18のスペクトルデータを表3にまとめる。行われたLC/MS/MS分析に基づいて、画分104と画分106を、それぞれ、ブリオスタチン−2(863Amu)とブリオスタチン−3(889Amu)であると確定した。
精製の間に、Luna C18(2)カラム(250x4.6mm、10μm)を使ってB16とB14Bを測定した。2mL/分の流量の無勾配モードの80%ACNP(リン酸で酸性化したアセトニトリル)で溶出を行った。カラム温度を30℃に設定した。
2本のprep−C18カラム(2.5x2.5cm、10μm)及びsemi−prepカラムを使ってB16とB14B含有画分を精製した。漸増濃度のACNPを使って、段階勾配で精製を行った。各蘚苔地衣類が個別のカラム上にほぼ位置するようになるまで、溶出をモニターした。カラムからACNPの急勾配を使って画分を追い出し、アッセイして各ピークの濃度を測定した。
図10では、10−9Mの精製蘚苔地衣類が、SHSY−5Y神経芽細胞腫細胞のα分泌酵素活性を高めることが示される。B3、B14B及びB16が、ブリオスタチン−1に比べて、α−分泌酵素の産生を改善することが示される。
3種の変異体を、ブリオスタチン1とブリオスタチン3に対するNMRの1Hと13C共鳴、及び結合性(HSQCとHMBCスペクトル)に関し比較した。3種全ての変異体は、ブリオスタチン3のC22ならびに類似のR1及びR3側鎖(OAc及び8−炭素 2,4−エン)の位置に明らかに閉環があった。ブリオスタチン3に対する変異体は:
従って、我々の現在の理解に基づくこれらの化合物を作製し、使用するための最良の形態の本発明の実施形態を開示した。当業者なら、このような好ましい実施形態は変更や修正される可能性があり、従って、本発明は、その厳密な詳細に限定されるのではなく、次の請求項の主題及びその等価物を包含するものでなければならないことを容易に理解するであろう。
Claims (10)
- 約50%の純度〜結晶形成純度を有する約896〜898Amu(質量+ナトリウム)及び873〜875Amu(モノアイソ卜ピック質量)の分子量を有する第1の蘚苔地衣類組成物。
- 897.2Amuの測定質量+ナトリウム、及び874.2Amuの測定モノアイソ卜ピック質量を有する請求項1に記載の第1の蘚苔地衣類組成物。
- 約50%の純度〜結晶形成純度を有する約910〜912Amu(質量+ナトリウム)及び888〜890Amu(モノアイソ卜ピック質量)の分子量を有する第2の蘚苔地衣類組成物。
- 911.5Amuの測定質量+ナトリウム、及び888.9Amuの測定モノアイソ卜ピック質量を有する請求項3に記載の第2の蘚苔地衣類組成物。
- 約50%の純度〜結晶形成純度を有する約868〜870Amu(分子質量+ナトリウム)及び846〜848Amu(モノアイソ卜ピック質量)の分子量を有する第3の蘚苔地衣類組成物。
- 869.5Amuの測定質量+ナトリウム、及び846.6Amuの測定モノアイソ卜ピック質量を有する請求項5に記載の第3の蘚苔地衣類組成物。
- 約50%の純度〜結晶形成純度を有する約895〜897Amu(質量+ナトリウム)及び872〜874Amu(モノアイソ卜ピック質量)の分子量を有する第4の蘚苔地衣類組成物。
- 895.5Amuの測定質量+ナトリウム、及び872.6Amuの測定モノアイソ卜ピック質量を有する請求項7に記載の第4の蘚苔地衣類組成物。
- 蘚苔地衣類のソースから蘚苔地衣類組成物を単離するステップと、前記蘚苔地衣類組成物を50%の純度及び結晶形成純度に精製するステップとを含み、前記蘚苔地衣類組成物が、前記第1の蘚苔地衣類、第2の蘚苔地衣類、第3の蘚苔地衣類、及び第4の蘚苔地衣類からなる蘚苔地衣類の群から選択される蘚苔地衣類組成物の作成方法。
- 前記第1の蘚苔地衣類、第2の蘚苔地衣類、第3の蘚苔地衣類、及び第4の蘚苔地衣類からなる蘚苔地衣類の群から選択される蘚苔地衣類組成物の有効量を投与するステップを含む蘚苔地衣類組成物に応答する疾患を治療する方法。
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WO2009129361A2 (en) * | 2008-04-16 | 2009-10-22 | University Of Utah Research Foundation | Macrocyclic compounds and methods of making and using thereof |
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EP2925315A2 (en) | 2015-10-07 |
US11639359B2 (en) | 2023-05-02 |
WO2014085491A2 (en) | 2014-06-05 |
CN105008342A (zh) | 2015-10-28 |
US20190194222A1 (en) | 2019-06-27 |
US20230250107A1 (en) | 2023-08-10 |
EP2925315B1 (en) | 2019-01-16 |
EP2925315A4 (en) | 2016-06-29 |
JP6440628B2 (ja) | 2018-12-19 |
US20210269453A1 (en) | 2021-09-02 |
CN109331013B (zh) | 2022-02-01 |
CN105008342B (zh) | 2018-10-19 |
US20150291616A1 (en) | 2015-10-15 |
US10954248B2 (en) | 2021-03-23 |
WO2014085491A3 (en) | 2015-07-16 |
HK1216891A1 (zh) | 2016-12-09 |
CN109331013A (zh) | 2019-02-15 |
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