JP5122962B2 - uPARターゲティング造影剤 - Google Patents
uPARターゲティング造影剤 Download PDFInfo
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- JP5122962B2 JP5122962B2 JP2007533418A JP2007533418A JP5122962B2 JP 5122962 B2 JP5122962 B2 JP 5122962B2 JP 2007533418 A JP2007533418 A JP 2007533418A JP 2007533418 A JP2007533418 A JP 2007533418A JP 5122962 B2 JP5122962 B2 JP 5122962B2
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- A—HUMAN NECESSITIES
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Description
Z1−W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5−X6−W2−Z2(Ia)
式中、
X0は1〜5個のアミノ酸を表し、
X1、X2、X3、X4及びX5は独立に1つのアミノ酸を表し、
Pheはフェニルアラニンを表し、
Leuはロイシンを表し、
Trpはトリプトファンを表し、
X6は0〜5個のアミノ酸を表すか又は次の式(Ib)であり、
β−Ala−Lys(Z1−W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5)(Ib)
式中、記号は式Iaで定義した通りであり、
β−Alaは、βアラニンを表し、
Lysはリシンを表し、
W1及びW2は、同一又は異なる部分であって、各々スペーサー、バイオモディファイヤーであるか或いは存在せず、Z1又はZ2の少なくとも一方が存在していて画像診断法で直接又は間接的に検出できる造影性部分を表す。
X2は、好ましくは、セリン(Ser)又はアラニン(Ala)、さらに好ましくはセリン、最も好ましくはD−セリンを表す。
β−Ala−Lys(Z1−W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5)(Ib)
式中、すべての記号は、既に定義した通りであり、また、式Ibのβ−Alaは、式IaのX5に結合されている。括弧内のペプチド鎖は、X5を介してリシンのε−アミノ基に結合される。この別の実施形態では、造影剤は、β−アラニンで予め誘導体化されたα−アミノ基を有し、それにより、リシンのα−炭素原子に関して擬対称的二量体を形成する、修飾リシン骨格上で合成された二量体を含む。この別の実施形態では、二量体は、好ましくは、ホモ二量体であり、そこでは2つの単量体中のペプチド配列は同じである。最も好ましくは、X6は存在しない。
X0−X1−Phe−X2−X3−X4−Leu−Trp−X5−X6で表されるペプチドベクターは、配列
X0−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Serを含み、造影剤は、式
Z1−W1−X0−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−X6−W2−Z2を有し、式中、記号は既に定義した通りである。
Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser又は
Thr−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Serを含み、
式中、斜体は、Dアミノ酸を表し、X6は、存在しない。
Z1−W1−Gly−Gly−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−NH2であり、
式中、Z1及びW1は、既に定義した通りであり、X6、W2及びZ2は、存在せず、C末端は、アミド基である。
それぞれのR1、R2、R3及びR4は独立にH又はC1−10アルキルであり、C3−10アルキルアリール、C2−10アルコキシアルキル、C1−10ヒドロキシアルキル、C1−10アルキルアミン、C1−10フルオロアルキル又は2つ以上のR基は、これらの結合先の原子とともに、炭素環式、複素環式、飽和又は不飽和環を形成する。
W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5−X6−W2(VII)
のuPARターゲティング化合物を提供し、
式中、記号は、式Iaについて定義されており、W1及びW2の一方又はその両方は、存在し、説明されているとおり、バイオモディファイヤーを表す。式VIIの化合物は、第1の態様で説明されているように、造影性部分に結合することができるか又は治療のような他の用途もある。
a)細胞、組織、器官又は生体試料を本発明の造影剤に接触させる段階と
b)細胞、組織、器官又は試料に関連付けられている造影性部分の存在を検出する段階を含む。この方法では、接触と検出は両方とも、インビトロで実施することができるが、或いは、接触をインビボで、検出をインビトロで行うが、好ましくは接触と検出はインビボである。
BAEEG:ビス−(アミノエチル)エチレングリコール、
Boc:t−ブチルオキシカルボニル、
Cy:シアニン、
DEG:ジエチレングリコール、
DMF:N,N−ジメチルホルムアミド、
Fmoc:9−フルオレニルメトキシカルボニル、
HATU:2−(7−アザ−1H−ベンゾトリアゾール−1−イル)−1,1,3,3−テトラメチルウロニウムヘキサフルオロホスフェート、
HPLC:高速液体クロマトグラフィー、
Krytofix 222:4,7,13,16,21,24−ヘキサオキサ−1,10−ジアザビシクロ−(8,8,8)ヘキサコサン、
LC:液体クロマトグラフィー、
MS:質量分析計、
NHS:N−ヒドロキシスクシンイミド、
NMM:N−メチルモルホリン、
PEG:ポリエチレングリコール、
PBS:リン酸緩衝液、
Pmc:2,2,5,7,8−ペンタメチルクロマン−6−スルホニル、
PyAOP:(7−アザベンゾトリアゾール−1−イルオキシ)トリピロリジノホスホニウムヘキサフルオロホスフェート、
Rink Amide MBHA樹脂:4−メチルベンズヒドリルアミンが結合したポリスチレンマトリックス、
RP−HPLC:逆相HPLC、
RT:室温、
Sep−Pak:C18樹脂を充填した分離カラム、
TFA:トリフルオロ酢酸、
TIS:トリイソプロピルシラン。
Cy5(ビス−SO 3 )−Thr−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−OH(2)
Cy5(ビスSO3)モノNHSエステル(1.18mg、0.0017mモル)をDMF中に溶解させ、ペプチド(1)(2mg、0.0015mモル)を固形物として溶液に加え、次いでNMM(0.55μl、0.005mモル)を加えた。反応槽をホイルにくるみ、16時間攪拌機上に置いた。エレクトロスプレイイオン化MSで所望の生成物を確認した。生成物の[M+H]+は、1850.85m/zと予想され、実際には1850.9m/zであった。
Cy5(ビス−SO 3 )−Gly−Gly−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−NH 2 (3)
上記配列のアミノ酸は、標準的な固相ペプチド化学反応で構築した。次いで、Cy5(ビスSO3)モノNHSエステル(0.5eq)をDMF中に溶解させ、H−Gly−Gly−Asp(OtBu)−Cha−Phe−Ser(tBu)−Arg(Pmc)−Tyr(tBu)−Leu−Trp(Boc)−Ser(tBu)−Rink Amide MBHA樹脂(1eq)に加え、その後、NMM(3eq)を加えた。反応槽をホイルにくるみ、16時間攪拌機上に置いた。Cy5色素結合ペプチドを脱保護し、水2.5%及びTIS 2.5%を含有するTFAで1時間処理して樹脂から切断した。エレクトロスプレイイオン化MSで所望の生成物を確認した。生成物の[M+H]+は、1977.88m/zと予想され、実際には1977.8m/zであった。
Cy5(ビス−SO 3 )−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−βAla−Lys(Cy5(ビス−SO 3 )−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser)−NH 2 (5)
上記配列に対応するペプチドは、標準的な固相ペプチド化学反応で構築した。
Cy5(ビスSO3)モノNHSエステル(2.2eq)をDMF中に溶解させ、ペプチド(4)(1eq)を固形物として溶液に加え、次いでNMM(3eq)を加える。反応槽をホイルにくるみ、24時間攪拌機上に置き、所望のビス結合生成物を得る。生成物は、RP−HPLC及びエレクトロスプレイイオン化MSで分析される。
N−(4−18F−フルオロベンジリデン)アミノオキシアセチル−PEG(4)−ジグリコロイル−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−NH 2 (8)
Boc−アミノオキシアセチル−PEG(4)−ジグリコール酸は、Boc−アミノオキシ酢酸の活性エステルを使用し、対応するアミノ−PEG(4)−ジグリコール酸と反応させる方法で、当業者が調製しうる。得られた生成物Boc−アミノオキシアセチル−PEG(4)−ジグリコール酸(1.4eq)とPyAOP(1.2eq)をDMF中に溶解させる。NMM(2eq、200μL)を加えて、混合物を5分間攪拌する。ペプチド(6)(1eq)とNMM(4eq)のDMF溶液を加えて、反応混合物を30分間攪拌する。DMFを真空中で蒸発させ、分取用RP−HPLCを使用して生成物を精製する。凍結乾燥に先立って0.3%のアンモニア(NH3)/水を使用して所望の生成物を含む分画をpH5に調整し、Boc保護基の脱落を防ぐ。生成物は、RP−HPLC及びエレクトロスプレイイオン化MSで分析される。
Kryptofix 222(0.5ml ACN中に5mg)及び炭酸カリウム(0.1M溶液50μl)の存在下で、20分間、窒素流の中で110℃に加熱して18F−フッ化物を共沸乾燥させる。このときに、3×0.5mlのACNを加えて、取り除く。混合物を<40℃に冷やし、Haka et al in J.Labelled Cpds.& Radiopharms 1989 27(7)823(0.4mlジメチルスルホキシド中1mg)で説明されている手順に従って合成されたトリメチルアンモニウムベンズアルデヒドトリフレートを加えた。反応槽を封止し、15分間90℃に加熱して、標識化を行わせる。次に4−18Fフルオロベンズアルデヒド原液を室温まで冷ます。その間、ペプチド(7)(6mg)をTFA 5%水溶液(200μl)で5分間、室温において処理し、Boc保護基を取り除く。溶媒を真空中で取り除く。Boc−脱保護ペプチドを、0.1Mの酢酸アンモニウム溶液(pH4、0.4ml)に再溶解させ、4−18F−フルオロベンズアルデヒド原液と反応槽内で組み合わせる。反応槽を封止し、15分間70℃に加熱して、結合を行わせる。室温まで冷ました後、粗コンジュゲートを分取用HPLCで精製する。所望のコンジュゲートを含む分画を水10mlで希釈し、C18 Sep−Pak(エタノール10ml及び水20mlで順次洗浄して予め調製しておいたもの)にローディングする。Sep−Pakを水10mlですすぎ、次いで、エタノール2mlで溶出する。エタノールを真空中で取り除き、生成物(8)をPBS内で形成する。
アセチル−PEG(4)−ジグリコロイル−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−Gly−BAEEG−Glut−cPN216(10)
上記配列に対応するペプチジル樹脂は、標準的な固相ペプチド化学反応で合成される。アセチル−PEG(4)−ジグリコール酸(5eq)とPyAOP(4.5eq)をDMF中に溶解させる。NMM(10eq、200μL)を加えて、混合物を5分間攪拌する。次いで、混合物を、DMF中で事前膨張させたペプチド樹脂に加え、反応を一晩続ける。次いで、ペプチドを脱保護し、水2.5%及びTIS 2.5%を含有するTFAを1時間使用して樹脂から切断する。生成物は、RP−HPLC及びエレクトロスプレイイオン化MSで分析される。
ペプチド(9)(1eq)をDMF中に溶解させ、cPN216−グルタリール−テトラフルオロチオフェニルエステル(2eq)を加え、続いて、NMM(3eq)を加える。一晩攪拌した後、減圧下で溶媒を取り除いて反応混合物にさらに処理し、生成物(10)を分取用RP−HPLCで精製する。生成物は、RP−HPLC及びエレクトロスプレイイオン化MSで分析される。
ペプチド(10)(0.1mg)を塩水又はメタノール(0.1ml)で戻し、賦形剤の凍結乾燥ツールボックスキット内に移す。ツールボックスキットは、アミンに基づくキレート用の一般的放射性標識条件を与えるように設計されており、塩化第一スズ乾燥物(16μg)、メチレンジホスホン酸(25μg)、炭酸水素ナトリウム(4500μg)、炭酸ナトリウム(600μg)、パラアミノ安息香酸ナトリウム(200μg)を備え、キットpH=9.2であった。塩水(3ml)中のテクネチウム酸ナトリウム(99mTc)注射液(2.1GBq)を加え、キットを数回反転させて内容物を溶解し、15〜20分間、室温で、インキュベートするのに任せた。HPLC及びITLCで直ちに試料を分析し、99mTc標識ペプチド(11)を、キット再構成後、1〜3時間被験者に投与する。
アセチル−Asp−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−Gly−BAEG−Glut−DOTA(15)のガドリニウム(III)錯体
トリ−tBu−DO3A(1,4,7,10−テトラアザシクロドデカン−N,N’,N’’−三酢酸、トリ−tert−ブチルエステル、10mモル)及びブロモ酢酸(10mモル)をMeOH(50ml)中に溶解させた。水(50ml)中に溶解しているK2CO3(30mモル)を加え(MeOH/水混合物中でpH11)、反応物を24時間攪拌し、次いでさらに24時間、40℃で加熱した。粗生成物を、RP−HPLCで精製した(Phenomenex Luna 5ミクロン、C18、250×21.2mm、10ml/分で40分間にわたり勾配5〜50% B)。エレクトロスプレイイオン化MSで所望の生成物を確認した。生成物の[M+Na]+は、595.4m/zと予想されたが、[M+Na]+は595.3m/zであり、80度で1H−NMRを使用した。
トリ−tBu−DOTA(13)(1,4,7,10−テトラアザシクロドデカン−N,N’,N’’,N’’’−四酢酸、トリ−tert−ブチルエステル1eq)をNMM(3eq)の存在下で5分間DMF中HATU(1eq)で活性化する。混合物を、ペプチド(12)に加え、反応を一晩続ける。溶媒を真空中で取り除き、生成物を水5%を含有するTFA中でtBu脱保護する。生成物は、RP−HPLCで精製され、RP−HPLC及びエレクトロスプレイイオン化MSで分析される。
DOTA結合ペプチド(14)(1eq)を、RTでpH6.5の水溶液中で、GdCl3(1eq)と反応させる。塩基性pHの溶液の遠心分離で非錯化Gd(III)を取り除く。生成物(15)を凍結乾燥で単離する。
Claims (4)
- 次の式IaのuPARターゲティング造影剤。
Z1−W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5−X6−W2−Z2(Ia)
式中、
X0は1〜5個のアミノ酸を表し、
X1、X2、X3、X4及びX5は独立に1つのアミノ酸を表し、
Pheはフェニルアラニンを表し、
Leuはロイシンを表し、
Trpはトリプトファンを表し、
X6は0〜5個のアミノ酸を表すか又は次の式(Ib)であり、
β−Ala−Lys(Z1−W1−X0−X1−Phe−X2−X3−X4−Leu−Trp−X5)(Ib)
式中、記号は式Iaで定義した通りであり、
β−Alaはβアラニンを表し、
Lysはリシンを表し、
式Ibのβ−Alaは式IaのX5に結合しており、
W1及びW2は同一又は異なる部分であって、W1 又はW2 がバイオモディファイヤーである場合には1〜10単位の単分散PEG構成単位を表すことを条件として、各々バイオモディファイヤーであるか或いは存在せず、Z1又はZ2の少なくとも一方が存在していて画像診断法で直接又は間接的に検出できる造影性部分を表す。 - 前記式(Ia)がペプチド配列Z1−W1−X0−Cha−Phe−Ser−Arg−Tyr−Leu−Trp−Ser−X6−W2−Z2である、請求項1記載の造影剤。
式中、Chaはシクロヘキシルアラニンを表し、Serはセリンを表し、Argはアルギニンを表し、Tyrはチロシンを表し、他のすべての記号は既に定義した通りである。 - Z1及びZ2の少なくとも一方が放射線、SPECT、PET、X線、MR、超音波又は光学イメージングで検出できる部分を含むインビボ診断用の造影性部分を表す、請求項1又は請求項2記載の造影剤。
- 請求項1乃至請求項3のいずれか1項記載の造影剤を、薬学的に許容される1種以上の補助剤、賦形剤又は希釈剤と共に含んでなる医薬組成物。
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US20070190068A1 (en) * | 2005-10-10 | 2007-08-16 | Richard Hart | uPAR-binding molecule-drug conjugates and uses thereof |
EP2091570A1 (en) * | 2006-12-20 | 2009-08-26 | GE Healthcare AS | Contrast agents |
GB0718967D0 (en) * | 2007-09-28 | 2007-11-07 | Ge Healthcare Ltd | Peptide imaging agents |
GB0718957D0 (en) * | 2007-09-28 | 2007-11-07 | Ge Healthcare Ltd | Optical imaging agents |
CN103108659A (zh) * | 2010-07-27 | 2013-05-15 | 通用电气健康护理有限公司 | 放射性药物组合物 |
CA2905172C (en) * | 2012-05-08 | 2021-07-20 | Andreas Kjaer | 177-lu labeled peptide for site-specific upar-targeting |
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AU2015317444B2 (en) * | 2014-09-17 | 2020-07-16 | Fluoguide A/S | uPAR targeting peptide for use in peroperative optical imaging of invasive cancer |
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US20220257799A1 (en) * | 2019-07-16 | 2022-08-18 | Fluoguide A/S | A receptor-targeting conjugate with an effective pharmacokinetic profile |
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US6120765A (en) * | 1993-04-02 | 2000-09-19 | Shiseido Co. Ltd. | Urokinase plasminogen activator fragments |
US5942492A (en) * | 1996-11-12 | 1999-08-24 | Angstrom Pharmaceuticals, Inc. | Cyclic peptides that bind to urokinase-type plasminogen activator receptor |
US6277818B1 (en) * | 1998-10-29 | 2001-08-21 | Angstrom Pharmaceuticals, Inc. | Cyclic peptide ligands that target urokinase plasminogen activator receptor |
GB9705521D0 (en) | 1997-03-18 | 1997-05-07 | Univ Sheffield | The use of mononuclear phagocytes in the vivo imaging of hypoxic/ischaemic tissue |
AR020101A1 (es) | 1998-07-01 | 2002-04-10 | Cancerforskingsfonden Af 1989 | Un antagonista peptido del receptor de uroquinasa humana, composicion farmaceutica que lo contiene, su uso para la manufactura de un medicamento y metodopara seleccionar un antagonista peptido adecuado. |
US6896870B1 (en) * | 1999-10-01 | 2005-05-24 | Angstrom Pharmaceuticals, Inc. | Diagnostic probes and therapeutics targeting uPA and uPAR |
AU780730B2 (en) * | 1999-10-01 | 2005-04-14 | Angstrom Pharmaceuticals, Inc. | Diagnostic probes and therapeutics targeting uPA and uPAR |
US7763234B2 (en) | 2004-03-04 | 2010-07-27 | Ge Healthcare As | Pharmaceutical compounds |
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- 2005-09-28 MX MX2007003750A patent/MX2007003750A/es active IP Right Grant
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US8568689B1 (en) | 2013-10-29 |
RU2394837C2 (ru) | 2010-07-20 |
MX2007003750A (es) | 2007-11-07 |
KR20070083604A (ko) | 2007-08-24 |
BRPI0516168A (pt) | 2008-08-26 |
CN101065152A (zh) | 2007-10-31 |
JP2008514588A (ja) | 2008-05-08 |
RU2007111467A (ru) | 2008-11-10 |
AU2005287934B2 (en) | 2009-03-26 |
CA2580464A1 (en) | 2006-04-06 |
KR101248350B1 (ko) | 2013-04-01 |
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