JP7016374B2 - 悪性の固形および全身性腫瘍の治療、診断および予防において使用するための安定なポリマー状の新規組換えタンパク質uk114 - Google Patents
悪性の固形および全身性腫瘍の治療、診断および予防において使用するための安定なポリマー状の新規組換えタンパク質uk114 Download PDFInfo
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- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
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Description
GSHMSSLVRRIISTAKAPAAIGPYSQAVLVDRTIYISGQLGMDPASGQLVPGGVVEEAKQALTNIGEILKAAGCDFTNVVKATVLLADINDFSAVNDVYKQYFQSSFPARAAYQVAALPKGGRVEIEAIAVQGPLTTASL.
前記タンパク質の配列が以下の表2に報告されている。
発現ベクターpET-15bを、大腸菌からの組換えタンパク質UK114の発現に使用する。ベクターpET-15bに先行するプラスミドからUK114をコードするヌクレオチド配列を転写するために、UK114の配列を、以下のプライマー対を用いて、PCRによって増幅する。
5'AGCATATTCGACTGACATATGTCGTCTTTGGTCAGAAGGAT-3'
UK-Xho-REV(配列番号3):
5'ATCGTCGGGCTCACTCGAGCTAGAGTGATGCTGTCGTGAGA-3'
ATGGGCAGCAGCCATCATCATCATCATCACAGCAGCGGCCTGGTGCCGCGCGGCAGCCATATGTCGTCTTTGGTCAGAAGGATAATCAGCACGGCGAAAGCCCCCGCGGCCATTGGTCCCTACAGTCAGGCTGTGTTAGTCGACAGGACCATTTACATTTCAGGACAGCTAGGTATGGACCCTGCAAGTGGACAGCTTGTGCCAGGAGGGGTGGTAGAAGAGGCTAAACAGGCTCTTACAAACATAGGTGAAATTCTGAAAGCAGCAGGCTGTGACTTCACGAATGTGGTAAAAGCAACGGTTTTGCTGGCTGACATAAATGACTTCAGTGCTGTCAATGATGTCTACAAACAATATTTCCAGAGTAGTTTTCCGGCGAGAGCTGCTTACCAGGTTGCTGCTTTGCCCAAAGGAGGCCGTGTTGAGATCGAAGCAATAGCTGTGCAAGGACCTCTCACGACAGCATCACTCTAA
MGSSHHHHHHSSGLVPRGSHMSSLVRRIISTAKAPAAIGPYSQAVLVDRTIYISGQLGMDPASGQLVPGGVVEEAKQALTNIGEILKAAGCDFTNVVKATVLLADINDFSAVNDVYKQYFQSSFPARAAYQVAALPKGGRVEIEAIAVQGPLTTASL
GSHMSSLVRRIISTAKAPAAIGPYSQAVLVDRTIYISGQLGMDPASGQLVPGGVVEEAKQALTNIGEILKAAGCDFTNVVKATVLLADINDFSAVNDVYKQYFQSSFPARAAYQVAALPKGGRVEIEAIAVQGPLTTASL
A)2M過塩素酸による処理
実施例1に従って得られたタンパク質溶液(3mg/ml)5mlを、4℃で2M過塩素酸5mlと混合する。酢酸ナトリウムを添加してpHを4.1に調整し、得られた溶液を4℃で一晩インキュベートする。沈殿物を10,000rpmで1時間の遠心分離により除去する。
実施例1に従って得られたタンパク質溶液(3mg/ml)5mlを、室温で30%過酸化水素5mlと混合する。得られた溶液を室温で2時間インキュベートする。
実施例1に従って得られたタンパク質溶液(3mg/ml)5mlを、4℃で、リン酸緩衝液(pH7.2,0.1M)中の0.01Mグルタルアルデヒド溶液1mlと混合する。得られる溶液を4℃で一晩インキュベートする。沈殿物を10,000rpmで1時間の遠心分離により除去する。
細胞膜上に存在する抗原への結合および、種々のヒト腫瘍細胞株(KATO 3°, HT29, TSA, MCF7, JURKAT)上での補体媒介細胞毒性活性および非腫瘍細胞株(NCTC, MCF10, HUVEC)上での細胞毒性の不存在を、哺乳動物において産生された過免疫抗PRP14血清、および対応するMabを用いて示した。
固定されておらず透過処理されていない細胞を、実施例1のタンパク質(PRP14)を用いて免疫付与することによって得られたウサギRIC1抗体を用いて試験した。
図7は、得られた異なる濃度(0.1~5%)の種々の抗血清を用いて実施された試験の結果を示す。実施例1のタンパク質(PRP14)で免疫付与することによって得られたウサギ抗体;過塩素酸で処理することによって得られるポリマータンパク質(PRP a)で免疫付与することによって得られるウサギ抗体を使用。対照は、免疫前ウサギ血清である。
細胞毒性試験を図8に報告する。1)対照:免疫前ウサギ血清;2)抗天然UK114mAb(International Journal of Oncology 8: 543-548,1996);3)ポリマータンパク質PRP14を用いて免疫付与して得られたウサギ抗体;4)過塩素酸処理したポリマータンパク質PRP14を用いて免疫付与して得られたウサギ抗体;5)H2O2で処理したポリマータンパク質PRP14を用いて免疫付与して得られたウサギ抗体。
ATPライトは細胞毒性と細胞増殖抑制性効果を区別しない細胞生存率測定試験である。
C26は非常に攻撃的なマウス腫瘍であり、急速に増殖して、20日でBalb/cマウス(体重18/20グラム)の生命に不適合な寸法に達する。
これは、文献(Calogero et al., Breast Cancer Research 2007, 9:21)に詳しく記載されている実験モデルであり、HER2 neu遺伝子を過剰発現する雌性BALB/cマウスに乳癌が現れるものである。癌の発症は、十分に確立された固定時間に現れ、このモデルを用いて経時的にモニターすることができる。
HT29ヒト結腸腺癌細胞をヌードマウスに移植して、過免疫哺乳動物血清(タンパク質PRP14で免疫)および前記タンパク質で免疫する前の同じ哺乳動物からの血清を用いて、ヒト腫瘍を有するヌードマウスへの抗腫瘍免疫の伝達を示した。
Claims (7)
- 悪性の固形および全身性新生物の治療、診断および予防における使用のためのポリマー状の組換えYjgF/YER057c/UK114 RIDタンパク質であって、配列番号1の配列を有する単量体単位の三量体であるタンパク質。
- 大腸菌により発現される、請求項1に記載の使用のためのタンパク質。
- 酸、酸化剤または架橋剤で処理することを特徴とする、請求項1に記載の使用のためのタンパク質。
- ヤギ(Capra hircus)由来である、請求項1に記載の使用のためのタンパク質。
- 新生物の治療を受けている対象の免疫付与のための、アジュバント療法のための、および新規または再発性の悪性新生物の危険性がある対象のワクチン接種のための、請求項1に記載の使用のためのタンパク質。
- 新生物に罹患しているかまたは新生物の治療を受けている対象のモノクローナル抗体による受動免疫付与のための、アジュバント療法のための、および新規または再発性の悪性新生物の危険性がある対象の治療のための、請求項1に記載の使用のためのタンパク質。
- 腺癌の治療のための、請求項1に記載の使用のためのタンパク質。
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IT102016000127428A IT201600127428A1 (it) | 2016-12-16 | 2016-12-16 | Nuova proteina ricombinante uk 114 in forma stabile polimerica per uso nella terapia, nella diagnostica e nella prevenzione di neoplasie maligne |
IT102016000127428 | 2016-12-16 | ||
PCT/EP2017/082849 WO2018109096A1 (en) | 2016-12-16 | 2017-12-14 | Novel recombinant protein uk 114 in stable polymer form for use in the treatment, diagnosis and prevention of malignant solid and systemic tumours |
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US11352398B2 (en) | 2022-06-07 |
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