JP6689329B2 - 免疫グロブリンFc変異体 - Google Patents
免疫グロブリンFc変異体 Download PDFInfo
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- JP6689329B2 JP6689329B2 JP2018146978A JP2018146978A JP6689329B2 JP 6689329 B2 JP6689329 B2 JP 6689329B2 JP 2018146978 A JP2018146978 A JP 2018146978A JP 2018146978 A JP2018146978 A JP 2018146978A JP 6689329 B2 JP6689329 B2 JP 6689329B2
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Classifications
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- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
- C07K16/283—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against Fc-receptors, e.g. CD16, CD32, CD64
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- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/22—Hormones
- A61K38/26—Glucagons
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- A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
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- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
- A61K47/6849—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a receptor, a cell surface antigen or a cell surface determinant
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K19/00—Hybrid peptides, i.e. peptides covalently bound to nucleic acids, or non-covalently bound protein-protein complexes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/52—Constant or Fc region; Isotype
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/94—Stability, e.g. half-life, pH, temperature or enzyme-resistance
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
- C07K2319/30—Non-immunoglobulin-derived peptide or protein having an immunoglobulin constant or Fc region, or a fragment thereof, attached thereto
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Microbiology (AREA)
- Mycology (AREA)
- Peptides Or Proteins (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Description
ヒトFcRnに対する結合親和性に関与する部位を大腸菌形質転換体HM11201(KCCM−10660P,特許文献4)から生産されたHMC001のアミノ酸配列(配列番号73)から選択し、FcRnに対する結合親和性を増加させるために、当該部位のアミノ酸を他のアミノ酸に置換する突然変異(mutagenesis)を誘導した。このために、ヌクレオチド置換用プライマーとクイックチェンジ部位特異的突然変異誘発キット(QuikChangeTM Site-directed Mutagenesis kit, Stratagene)を用いた。これに関して、部位特異的突然変異に用いられたプライマーを表1〜3に示す。
実施例1で作製された免疫グロブリンFc変異体の発現ベクターをそれぞれ42℃で1分間の熱ショックによりE.coli BL21(DE3)コンピテント細胞(competent cell)(Invitrogen)に形質転換し、その後アンピシリンを含むLB固体培地で培養してアンピシリン抵抗性コロニーを選択した。
実施例2で発酵させた培養液を12,000gで30分間遠心分離することにより、細胞ペレットを回収した。こうして回収した細胞ペレットを10×体積の溶解緩衝液(20mM Tris(pH9.0),1mM EDTA(pH8.0),0.2M NaCl,0.5%トリトンX−100)に懸濁させ、その後マイクロフルイダイザー(Microfluidizer, Microfluidics)を用いて15,000psiの圧力で3回破砕した。こうして得られた細胞溶解液を6,000gで30分間遠心分離することにより、大腸菌形質転換体から発現したタンパク質の封入体のみを得た。
実施例3で分離及び精製した免疫グロブリンFc変異体のFcRn結合親和性を評価するためにELISA分析を行った。下記実験において、ヒトFcRn(hFcRn, human neonatal Fcγ receptor)は293T細胞で発現させて精製したものであり、GST抗体はメルクミリポア社(Merk Milipore)から購入したものである。対照群としてHMC001と天然IgGを用いて、それぞれの免疫グロブリンFc変異体において測定されたFcRn結合親和性を比較した。
本発明による免疫グロブリンFc変異体において、タンパク質薬物と結合した形態でもヒトFcRnに対する結合親和性が増加するか否かを調査するために、実施例4で高いFcRn結合親和性を示すことが確認されたHMC002及びHMC008を、両末端にアルデヒド反応基を有するPEGを用いて、エキセンディン(exendin)−4に共有的に連結することにより、タンパク質結合体を作製した。タンパク質結合体の作製は、特許文献5に記載の方法により行った。こうして作製されたタンパク質結合体のヒトFcRnに対する結合親和性を評価するために、実施例4に記載の方法によりELISAを行った。
本発明のまた別の態様は、以下のとおりであってもよい。
〔1〕FcRnに対する結合親和性が増加した免疫グロブリンFc変異体であって、天然免疫グロブリンFcフラグメントの定常領域において、307S、308F、380S、380A、428L、429K、430S、433K及び434S(上記ナンバリングはEUインデックスによる)からなる群から選択される少なくとも1つのアミノ酸修飾を含むことを特徴とする、免疫グロブリンFc変異体。
〔2〕前記アミノ酸修飾が、428L/434S、433K/434S、429K/433K、428L/433K、308F/380A、307S/380S及び380S/434Sからなる群から選択される、前記〔1〕に記載の免疫グロブリンFc変異体。
〔3〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、428位のヒスチジンがリジンに置換され、434位のアスパラギンがセリンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔4〕前記前記免疫グロブリンFc変異体が、配列番号74で表されるアミノ酸配列を有する、前記〔4〕に記載の免疫グロブリンFc変異体。
〔5〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、433位のヒスチジンがリジンに置換され、434位のアスパラギンがセリンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔6〕前記免疫グロブリンFc変異体が、配列番号80で表されるアミノ酸配列を有する、前記〔5〕に記載の免疫グロブリンFc変異体。
〔7〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、429位のヒスチジンがリジンに置換され、433位のヒスチジンがリジンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔8〕前記免疫グロブリンFc変異体が、配列番号91で表されるアミノ酸配列を有する、前記〔7〕に記載の免疫グロブリンFc変異体。
〔9〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、428位のメチオニンがロイシンに置換され、433位のヒスチジンがリジンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔10〕前記免疫グロブリンFc変異体が、配列番号92で表されるアミノ酸配列を有する、前記〔9〕に記載の免疫グロブリンFc変異体。
〔11〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、308位のバリンがフェニルアラニンに置換され、380位のグルタミン酸がアラニンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔12〕前記免疫グロブリンFc変異体が、配列番号100で表されるアミノ酸配列を有する、前記〔11〕に記載の免疫グロブリンFc変異体。
〔13〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、307位のスレオニンがセリンに置換され、380位のグルタミン酸がセリンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔14〕前記免疫グロブリンFc変異体が、配列番号101で表されるアミノ酸配列を有する、前記〔13〕に記載の免疫グロブリンFc変異体。
〔15〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントの定常領域において、380位のグルタミン酸がセリンに置換され、434位のアスパラギンがセリンに置換されたアミノ酸修飾を含む、前記〔1〕に記載の免疫グロブリンFc変異体。
〔16〕前記免疫グロブリンFc変異体が、配列番号103で表されるアミノ酸配列を有する、前記〔15〕に記載の免疫グロブリンFc変異体。
〔17〕前記天然免疫グロブリンFcフラグメントが、IgG1、IgG2、IgG3及びIgG4のFcフラグメントからなる群から選択される、前記〔1〕に記載の免疫グロブリンFc変異体。
〔18〕前記天然免疫グロブリンFcフラグメントが、IgG4 Fcフラグメントである、前記〔17〕に記載の免疫グロブリンFc変異体。
〔19〕前記天然免疫グロブリンFcフラグメントが、ヒト非グリコシル化IgG4 Fcフラグメントである、前記〔18〕に記載の免疫グロブリンFc変異体。
〔20〕前記天然免疫グロブリンFcフラグメントが、配列番号75で表されるアミノ酸配列を有する、前記〔1〕に記載の免疫グロブリンFc変異体。
〔21〕前記免疫グロブリンFc変異体が、免疫グロブリンの可変領域と軽鎖を含まない、前記〔1〕に記載の免疫グロブリンFc変異体。
〔22〕前記免疫グロブリンFc変異体が、動物細胞又は大腸菌で生産される、前記〔1〕に記載の免疫グロブリンFc変異体。
〔23〕前記免疫グロブリンFc変異体が、大腸菌で生産される、前記〔22〕に記載の免疫グロブリンFc変異体。
〔24〕前記免疫グロブリンFc変異体が、天然免疫グロブリンFcフラグメントに比べて、pH7.4では低いFcRn結合親和性を示すが、pH6.0では高いFcRn結合親和性を示す、前記〔1〕に記載の免疫グロブリンFc変異体。
〔25〕生体内半減期が延長されたタンパク質結合体であって、生理活性ポリペプチドが、非ペプチド性重合体を介して前記〔1〕〜〔24〕のいずれかに記載の免疫グロブリンFc変異体に共有的に連結されることを特徴とする、タンパク質結合体。
〔26〕前記非ペプチド性重合体が、ポリ(エチレングリコール)モノポリマー、ポリ(プロピレングリコール)モノポリマー、エチレングリコール−プロピレングリコール共重合体、ポリオキシエチル化ポリオール、ポリビニルアルコール、ポリサッカライド、デキストラン、ポリビニルエチルエーテル、生分解性高分子、脂質重合体、キチン、ヒアルロン酸及びそれらの組み合わせからなる群から選択される、前記〔25〕に記載のタンパク質結合体。
〔27〕前記非ペプチド性重合体が、ポリ(エチレングリコール)である、前記〔26〕に記載のタンパク質結合体。
〔28〕前記生理活性ポリペプチドが、ヒト成長ホルモン、成長ホルモン放出ホルモン、成長ホルモン放出ペプチド、インターフェロン、コロニー刺激因子、インターロイキン、可溶性インターロイキン受容体、可溶性TNF受容体、グルコセレブロシダーゼ、マクロファージ活性化因子、マクロファージペプチド、B細胞因子、T細胞因子、タンパク質A、アレルギー抑制因子、細胞壊死糖タンパク質、免疫毒素、リンホトキシン、腫瘍壊死因子、腫瘍抑制因子、転移成長因子、α1アンチトリプシン、アルブミン、アポリポタンパク質E、エリスロポエチン、高グリコシル化エリスロポエチン、血液凝固第VII因子、血液凝固第VIII因子、血液凝固第IX因子、プラスミノーゲン活性化因子、ウロキナーゼ、ストレプトキナーゼ、タンパク質C、C反応性タンパク質、レニンインヒビター、コラゲナーゼインヒビター、スーパーオキシドジスムターゼ、レプチン、血小板由来成長因子、表皮細胞成長因子、骨成長因子、骨促進タンパク質、カルシトニン、インスリン、インスリン変異体、グルカゴン、グルカゴン様ペプチド−1、アトリオペプチン、軟骨誘導因子、結合組織活性化因子、卵胞刺激ホルモン、黄体形成ホルモン、黄体形成ホルモン放出ホルモン、神経成長因子、副甲状腺ホルモン、リラキシン、セクレチン、ソマトメジン、インスリン様成長因子、副腎皮質ホルモン、コレシストキニン、膵臓ポリペプチド、ガストリン放出ペプチド、コルチコトロピン放出因子、甲状腺刺激ホルモン、受容体、受容体拮抗物質、細胞表面抗原、モノクローナル抗体、ポリクローナル抗体、抗体フラグメント、及びウイルス由来ワクチン抗原からなる群から選択される、前記〔25〕に記載のタンパク質結合体。
〔29〕生理活性ポリペプチドの生体内半減期を延長させる方法であって、前記〔1〕〜〔24〕のいずれかに記載の免疫グロブリンFc変異体を、非ペプチド性重合体を介して生理活性ポリペプチドに共有的に連結させる工程を含むことを特徴とする、方法。
Claims (9)
- 生理活性ポリペプチドが非ペプチド性重合体を介して免疫グロブリンFc変異体に共有的に連結されたタンパク質結合体であって、
前記免疫グロブリンFc変異体が、野生型免疫グロブリンFcフラグメントの定常領域において、428L/434S(このナンバリングはEUインデックスによる)というアミノ酸修飾を含み、
前記野生型免疫グロブリンFcフラグメントが、ヒト非グリコシル化IgG4 Fcフラグメントであることを特徴とする、タンパク質結合体。 - 野生型免疫グロブリンFcフラグメントを含むタンパク質結合体と比べて、生体内半減期が延長され、かつFcRnに対する結合親和性が増加している、請求項1に記載のタンパク質結合体。
- 前記免疫グロブリンFc変異体が、前記野生型免疫グロブリンFcフラグメントの定常領域において、428位のメチオニンがロイシンに置換され、434位のアスパラギンがセリンに置換されたアミノ酸修飾を含み、かつ、配列番号74で表されるアミノ酸配列を有する、請求項1に記載のタンパク質結合体。
- 前記非ペプチド性重合体が、ポリ(エチレングリコール)モノポリマー、ポリ(プロピレングリコール)モノポリマー、エチレングリコール−プロピレングリコール共重合体、ポリオキシエチル化ポリオール、ポリビニルアルコール、ポリサッカライド、デキストラン、ポリビニルエチルエーテル、生分解性高分子、脂質重合体、キチン、ヒアルロン酸及びそれらの組み合わせからなる群から選択される、請求項1に記載のタンパク質結合体。
- 前記生理活性ポリペプチドが、ヒト成長ホルモン、成長ホルモン放出ホルモン、成長ホルモン放出ペプチド、インターフェロン、コロニー刺激因子、インターロイキン、可溶性インターロイキン受容体、可溶性TNF受容体、グルコセレブロシダーゼ、マクロファージ活性化因子、マクロファージペプチド、B細胞因子、T細胞因子、タンパク質A、アレルギー抑制因子、細胞壊死糖タンパク質、免疫毒素、リンホトキシン、腫瘍壊死因子、腫瘍抑制因子、転移成長因子、α1アンチトリプシン、アルブミン、アポリポタンパク質E、エリスロポエチン、高グリコシル化エリスロポエチン、血液凝固第VII因子、血液凝固第VIII因子、血液凝固第IX因子、プラスミノーゲン活性化因子、ウロキナーゼ、ストレプトキナーゼ、タンパク質C、C反応性タンパク質、レニンインヒビター、コラゲナーゼインヒビター、スーパーオキシドジスムターゼ、レプチン、血小板由来成長因子、表皮細胞成長因子、骨成長因子、骨促進タンパク質、カルシトニン、インスリン、インスリン変異体、グルカゴン、グルカゴン様ペプチド−1、アトリオペプチン、軟骨誘導因子、結合組織活性化因子、卵胞刺激ホルモン、黄体形成ホルモン、黄体形成ホルモン放出ホルモン、神経成長因子、副甲状腺ホルモン、リラキシン、セクレチン、ソマトメジン、インスリン様成長因子、副腎皮質ホルモン、コレシストキニン、膵臓ポリペプチド、ガストリン放出ペプチド、コルチコトロピン放出因子、甲状腺刺激ホルモン、受容体、受容体拮抗物質、細胞表面抗原、モノクローナル抗体、ポリクローナル抗体、抗体フラグメント、及びウイルス由来ワクチン抗原からなる群から選択される、請求項1に記載のタンパク質結合体。
- 前記野生型免疫グロブリンFcフラグメントが、配列番号73で表されるアミノ酸配列を有する、請求項1に記載のタンパク質結合体。
- 前記免疫グロブリンFc変異体が、免疫グロブリンの可変領域と軽鎖を含まない、請求項1に記載のタンパク質結合体。
- 前記免疫グロブリンFc変異体が、動物細胞又は大腸菌で生産される、請求項1に記載のタンパク質結合体。
- 前記免疫グロブリンFc変異体が、前記野生型免疫グロブリンFcフラグメントに比べて、pH7.4では低いFcRn結合親和性を示すが、pH6.0では高いFcRn結合親和性を示す、請求項1に記載のタンパク質結合体。
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WO2013100702A1 (en) | 2013-07-04 |
TW201336865A (zh) | 2013-09-16 |
JP6448368B2 (ja) | 2019-01-09 |
EP3656792A1 (en) | 2020-05-27 |
AR089507A1 (es) | 2014-08-27 |
CN104039831B (zh) | 2018-02-23 |
TWI680137B (zh) | 2019-12-21 |
KR102041412B1 (ko) | 2019-11-11 |
TW202012449A (zh) | 2020-04-01 |
JP2019001793A (ja) | 2019-01-10 |
CN108465111A (zh) | 2018-08-31 |
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