JP2016518422A - 癌の治療および予防のための(+)‐カテキンおよびアミノ酸の複合体を含む組成物 - Google Patents
癌の治療および予防のための(+)‐カテキンおよびアミノ酸の複合体を含む組成物 Download PDFInfo
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Abstract
Description
膜安定化作用;
哺乳類の器官を取り巻く結合組織のウェブの保護特性;および
潰瘍およびカルチノイド腫瘍を起こしやすいと考えられている胃粘膜への直接の保護作用。
HClなどの一官能酸の場合、[C:AA:H+:A−/1:x:x:x];または
酸の場合、[C:xAA:xH+:x/yAy]であり、
H+は、酸のプロトンを表し、
A−は、酸のアニオンを表し、
xは、AAのモル当量数を表し、
yは、アニオンの持つ電荷を表す。
バイオアベイラビリティは、最初に投与された量と比較した、生物中に見られる遊離単量体(+)‐カテキンの比率に相当する。
第I相反応は、主として肝臓ミクロソーム中で行われる酸化反応;これよりも非常に頻度が低く、それほどよくは研究されていない還元反応;ならびに、肝臓、種々の組織、およびさらには血漿中でも行われる通常の(banal)代謝経路を構成する加水分解反応を含み;および続いて、
第I相反応から得られた誘導体が、次に結合される。この結合が第II相反応を構成するものであり、このような誘導体のグルクロン酸との結合が関与するグルクロン酸抱合を含む。
以下で述べる実験結果は、健康なヒト、および体重約250グラムの健康なウィスターラットで実施した研究に基づいて得られたものである。
1mg/mL(メタノール)の(+)‐カテキンの内標準溶液を、(+)‐カテキンのストック溶液から調製し、続いて−20℃で保存した。
a)血漿中遊離単量体(+)‐カテキンの分析のための抽出プロトコル
500μLのホモジナイズした血漿を15mLフラスコに移す;
50μLのSI(10ppm)を添加する;
180μLの抗酸化剤溶液(20mg/mLのアスコルビン酸および1mg/mLのEDTA)および10μLのオルソリン酸を添加する;
2分間のボルテックス混合を行う;
抽出混合物を得るために、1.5mLの水を添加して希釈する;
当業者に公知であり本手順に適合可能である標準的なプロトコルに従い、Water Oasis(商標)HLBを用いて、固相抽出をこの抽出混合物に適用する;
不活性雰囲気下、45℃での蒸発によって、溶出液を乾燥する;
乾燥抽出物をアセトニトリル中に溶解し、続いて3000rpmで10分間の遠心分離を行う;ならびに
HPLC(高速液体クロマトグラフィを表す)分析を行う。
500μLのホモジナイズした血漿を15mLフラスコに移す;
50μLのSI(10ppm)を添加する;
180μLの抗酸化剤溶液(1mg/mLのEDTA中の20mg/mLのアスコルビン酸)および10μLのオルソリン酸を添加する;
2分間のボルテックス混合を行う;
750μLの0.2M 酢酸緩衝溶液(pH4.8)を添加する;
5μLのへリックスポマチア(Helix pomatia)の混合物を添加し、続いて55℃で2時間のこの溶液の消化工程を行う;
4000rpmで10分間の遠心分離を行い、抽出混合物を得る;
当業者に公知であり本手順に適合可能である標準的なプロトコルに従い、Water Oasis(商標)HLBを用いて、固相抽出をこの抽出混合物に適用する;
不活性雰囲気下、45℃での蒸発によって、溶出液を乾燥する;
乾燥抽出物をアセトニトリル中に溶解し、続いて3000rpmで10分間の遠心分離を行う;ならびに
HPLC(高速液体クロマトグラフィを表す)分析を行う。
活性化溶液:
1mLのメタノール;
1mLの水;および
1mLの0.1(体積)%ギ酸含有DMF溶液(70体積%)
洗浄溶液:
EmLの水;
1mLのメタノール溶液(30体積%);
1mLの酢酸エチル
溶出溶液:
5mLのモル当量比1:2での酢酸エチルおよびメタノール混合物
液体クロマトグラフィ(LC)
カラム:Alltima C18 5μ;
HPLC水性固定相A:ギ酸(0.1体積%の量に濃縮);
HPLC移動相B:0.1体積%の量でギ酸を含有するアセトニトリルの溶液;
流速:0.6mL/分;
オーブン温度:30℃;
注入体積:50μL;
溶出プログラム:
脱溶媒温度400℃でのネガティブモードESIイオン化;
イオン源温度:120℃;
コーンガス流量:150L/時間;
脱溶媒ガス流量:1000L/時間
複合体は、単量体(+)‐カテキンが前記少なくとも1つの塩基性アミノ酸と、または前記少なくとも1つの塩基性アミノ酸誘導体と、水素架橋型の結合によって結合している分子構造に相当する。
1a.モル当量比1:2での単量体(+)‐カテキンおよびリジンの複合体
当業者に公知の方法のうちの1つに従ってアセンヤクから抽出された単量体(+)‐カテキンを粉砕し、続いて50℃で30分間真空乾燥する。
実施例1aのリジン複合体の合成で用いたものと同じプロトコルに従うが、リジン不足によってモル当量比1:1の前記複合体の形成を促進する過剰の(+)‐カテキンが存在するようにリジンの量を2分の1に減らして、モル当量比1:1での単量体(+)‐カテキンとリジンとの複合体を合成した。
2a.モル当量比1:2での単量体(+)‐カテキンおよびアルギニンの複合体
実施例1aのリジン複合体の合成で用いたものと同じプロトコルに従って、単量体(+)‐カテキンとアルギニンとの複合体を合成した。
実施例1bのリジン複合体の合成で用いたものと同じプロトコルにより、単量体(+)‐カテキンとアルギニンとの複合体を合成した。
実施例3:ヒトにおける単量体(+)‐カテキンヒドロクロロリジネート(または[C:Lys:HCl]複合体塩)の経口投与後におけるバイオアベイラビリティ測定
単量体(+)‐カテキンおよび少なくとも1つの塩基性アミノ酸の複合体:単量体(+)‐カテキンヒドロクロロリジネートの1.5g。プロトコル1bに従って得られた[C:Lys]複合体から開始すると、単量体(+)‐カテキンは、前記複合体の総重量に対して61重量%の割合で存在し(すなわち、1.5gに対して0.92g)、単量体(+)‐カテキンヒドロクロロリジネート([C:Lys:HCl]複合体塩)は、前記[C:Lys]複合体を、前記複合体に対して等モル量で添加されたHClで中和することによって合成する。
純単量体(+)‐カテキンの1gの用量を、5名の健康な志願者のグループBに投与する。
純単量体(+)‐カテキン(CP)の100mg(体重1kgあたり)の用量、または(+)‐カテキン100mgと同等の(+)‐カテキンリジネートの用量を、5体のウィスターラットの各個体に投与した。
100×[(112422−96238)/96238]=17%
純単量体(+)‐カテキン(CP)の100mg(体重1kgあたり)の用量、または(+)‐カテキン100mgと同等の(+)‐カテキン複合体の用量を、5体のウィスターラットのサンプルの各個体に投与した。
純単量体(+)‐カテキン(CP)の25mg(体重1kgあたり)の用量、または(+)‐カテキン25mgと同等の(+)‐カテキンリジネートの用量を、3体のウィスターラットのサンプルの各個体に投与した。
実施例4:皮膚における3H‐プロリンの全取り込みおよびコラーゲンへの取り込みに対する単量体(+)‐カテキンヒドロクロロリジネートおよび単量体(+)‐カテキンアスコルボリジネート(ascorbolysinate)の作用の測定
リソソーム膜の安定化は、結合基質(connective matrix)、特にコラーゲンの分解の原因となるタンパク質分解酵素の放出を阻止する。この分解は、癌の種類に関わらず、転移性癌細胞の増殖の原因となる(Cell Communication and Signaling 2010, 8: 22)。
この比較実施例では、体重が95〜115gの12体のウィスターラットのグループEに対して、比放射能が13.6Ci/10−3モルである放射性3H‐ヒドロキシプロリンを、放射性3H‐プロリンに関して100μCi/個体の放射能を表す個体の体重に対して1mCi/kgの用量でのプロリン‐L‐(5‐3H)の腹腔内注射によってすべての個体に投与した。
この実施例では、自然に胃病変を、特に胃癌を発症することが知られているアフリカのラット、マストミスにおける単量体(+)‐カテキンヒドロクロロリジネートの生体内での効果を実証する。
この実施例では、1日あたり1つの[C:Lys:HCl]複合体塩500mg錠剤で1年以上治療を受けた2名の癌患者での単量体(+)‐カテキンヒドロクロロリジネートの効果の試験に関する結果を示す。
前記複合体の前駆体としての前記単量体(+)‐カテキンおよび前記少なくとも1つの塩基性アミノ酸を含む組成物を作製するための方法は、以下の工程を含む:
第一の量の単量体(+)‐カテキンを提供する工程;
第二の量の少なくとも1つの塩基性アミノ酸または少なくとも1つの塩基性アミノ酸誘導体を提供して、前記(+)‐カテキンと前記少なくとも1つの塩基性アミノ酸または前記少なくとも1つの塩基性アミノ酸誘導体とのモル当量比が、1:1〜1:2.5、好ましくは1:1以上、特に1:1超、好ましくは1:2.5以下、特に2.5未満、より特には1:2以下、より特には2未満とする工程;ならびに
前記単量体(+)‐カテキンを、前記少なくとも1つの塩基性アミノ酸または前記塩基性アミノ酸誘導体と接触させて、単量体(+)‐カテキンおよび少なくとも1つの塩基性アミノ酸または塩基性アミノ酸の少なくとも1つの誘導体の前記混合物を得る工程。
比較実施例6:ラットにおけるモル当量比1:1および1:2での(+)‐カテキンとリジンとの複合体の経口投与後ならびに注射投与後におけるバイオアベイラビリティ測定
[C:Lys/1:2]複合体への酸の添加の考え得る効果を確認するために、発明者らは、CPまたは[C:Lys:HCl/1:2:2]複合体塩の経口摂取後の血漿中遊離単量体(+)‐カテキンのレベルを測定した。結果を以下の表に示す。
経口投与される組成物が、実施例1a(1b)もしくは2a(2b)(実施例1および2参照)に記載の方法に従って作製された[C:AA/1:1‐1:2.5]複合体に基づくか、またはそうでなければ、経口投与される組成物が、(+)‐カテキンおよびリジン塩酸塩(ヒドロクロロリジネートとも称される)の粉末の所望されるモル当量比での混合物であるかに関わらず、経口投与後のバイオアベイラビリティに関する結果は類似している(以下の表15参照)。
この実施例では、以下の表16の結果によって示されるように、ケルセチンまたは没食子酸エピガロカテキン(EGCG)の場合の経口投与後におけるバイオアベイラビリティに対して、リジンの効果が有意なものではないことが実証される。
Claims (20)
- 単量体(+)‐カテキンおよび少なくとも1つの塩基性アミノ酸の化合物を含む経口投与用胃腸治療組成物であって、前記組成物が、癌の治癒的および/または予防的治療のために用いられ、前記単量体(+)‐カテキンの、前記少なくとも1つの塩基性アミノ酸または少なくとも1つの塩基性アミノ酸誘導体に対するモル当量比が、1:1〜1:2.5であることを特徴とする胃腸治療組成物。
- 前記少なくとも1つの塩基性アミノ酸が、天然もしくは合成由来のリジンまたは天然もしくは合成由来のアルギニン、または前記2つの混合物である、請求項1に記載の経口投与用胃腸組成物。
- 前記少なくとも1つの塩基性アミノ酸が、リジンである、請求項1または2に記載の経口投与用胃腸組成物。
- 少なくとも1つの酸を含むことを特徴とする、請求項1〜3のいずれか一項に記載の経口投与用胃腸組成物。
- 前記酸が、アスコルビン酸、酢酸、クエン酸、および塩酸から選択される、請求項4に記載の経口投与用胃腸組成物。
- 前記酸が、アスコルビン酸である、請求項4または5に記載の経口投与用胃腸組成物。
- 1つ以上の生体適合性賦形剤も含むことを特徴とする、請求項1〜6のいずれか一項に記載の経口投与用胃腸組成物。
- (+)‐カテキンおよび塩基性アミノ酸または塩基性アミノ酸の誘導体の含有量が、前記組成物の総重量に対して15重量%〜95重量%であり、好ましくは、60%〜90%、有利には、65%〜85%である、請求項1〜7のいずれか一項に記載の経口投与用胃腸組成物。
- 液体の形態、好ましくは水溶液である、請求項1〜8のいずれか一項に記載の経口投与用胃腸組成物。
- 25℃の0.01モル濃度溶液において、pHが、3以上、好ましくは、4〜11、有利には、4.5〜9であることを特徴とする、請求項9に記載の経口投与用胃腸組成物。
- 固体の形態、好ましくは、水溶性固体の形態、特には、粉末、錠剤、またはロゼンジの形態である、請求項1〜8のいずれか一項に記載の経口投与用胃腸組成物。
- 前記単量体(+)‐カテキンおよび前記少なくとも1つのアミノ酸または前記少なくとも1つのアミノ酸誘導体が、複合体を形成する、請求項1〜11のいずれか一項に記載の経口投与用胃腸組成物。
- 前記複合体が、前記複合体の塩の形態であり、前記塩は、前記複合体を含み、前記複合体は、少なくとも1つの酸から誘導される少なくとも1つのプロトンおよび前記少なくとも1つの酸から誘導される少なくとも1つのアニオンを含み、前記塩は、塩基性アミノ酸または塩基性アミノ酸誘導体の量に対して等モル量の前記プロトンおよび前記アニオンを示すことを特徴とする請求項10に記載の経口投与用胃腸組成物。
- 前記複合体が、投与後に形成され、前記組成物が、前記単量体(+)‐カテキン、および前記少なくとも1つの塩基性アミノ酸または前記少なくとも1つの塩基性アミノ酸誘導体、ならびに所望に応じて前記酸を、前記複合体または前記複合体の前記塩の前駆体として、1:1〜2.5のモル当量比に従って含む固体組成物である、請求項10に記載の経口投与用胃腸組成物。
- 前記組成物が、固体形態であり、単量体(+)‐カテキンおよび前記少なくとも1つの塩基性アミノ酸または前記少なくとも1つの塩基性アミノ酸誘導体、ならびに所望に応じて前記酸を、前記複合体または前記複合体の前記塩の前駆体として、水相中に溶解しての同時使用のための混合製剤として含み、前記複合体は、経口投与前に形成され、前記単量体(+)‐カテキンおよび前記少なくとも1つの塩基性アミノ酸または前記少なくとも1つの塩基性アミノ酸誘導体は、1:1〜1:2.5のモル当量比で存在する、請求項10または11に記載の経口投与用胃腸組成物。
- 肝細胞癌の予防的および/または治癒的治療のためである、請求項1〜15のいずれか一項に記載の経口投与用胃腸組成物。
- 白血病の予防的および/または治癒的治療のためである、請求項1〜15のいずれか一項に記載の経口投与用胃腸組成物。
- 骨髄腫の予防的および/または治癒的治療のためである、請求項1〜15のいずれか一項に記載の経口投与用胃腸組成物。
- リンパ腫の予防的および/または治癒的治療のためである、請求項1〜15のいずれか一項に記載の経口投与用胃腸組成物。
- 限定されないが、肝臓癌、前立腺癌、乳癌、子宮癌、精巣癌、膀胱癌、腎臓癌、肺癌、気管支癌、骨癌、口癌、食道癌、胃癌、膵臓癌、および結腸直腸癌の予防的および/または治癒的治療のためである、請求項1〜15のいずれか一項に記載の経口投与用胃腸組成物。
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CH665634A5 (en) * | 1985-08-30 | 1988-05-31 | Joseph Dr Kovacs | Stable soluble catechin complexes - with a double salt of L-lysine, for liver protection and digestive ulcers |
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CH665634A5 (en) * | 1985-08-30 | 1988-05-31 | Joseph Dr Kovacs | Stable soluble catechin complexes - with a double salt of L-lysine, for liver protection and digestive ulcers |
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BE1023772B9 (fr) | 2017-08-02 |
WO2014184197A1 (fr) | 2014-11-20 |
US9844595B2 (en) | 2017-12-19 |
BE1023772B1 (fr) | 2017-07-17 |
AU2014267398B2 (en) | 2019-02-21 |
EP2996686A1 (fr) | 2016-03-23 |
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JP2016518423A (ja) | 2016-06-23 |
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EP2996686B1 (fr) | 2019-04-03 |
CA2912128A1 (fr) | 2014-11-20 |
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