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      一種抗topk第74位酪氨酸殘基磷酸化的抗體及其制備方法和應用

      文檔序號:9881128閱讀:609來源:國知局
      一種抗topk第74位酪氨酸殘基磷酸化的抗體及其制備方法和應用
      【技術領域】
      [0001] 本發(fā)明屬于生物和疾病診斷領域,具體涉及一種抗Τ0ΡΚ第74位酪氨酸殘基磷酸化 的抗體,本發(fā)明還涉及該抗體的制備方法和應用。
      【背景技術】
      [0002] Τ0ΡΚ,又名,即PDZ連接激酶及淋巴因子激活的殺傷性Τ淋巴細胞源性蛋白激 酶,其作為一種新的絲-蘇氨酸蛋白激酶[1,2],在乳腺癌、結直腸癌、黑色素瘤、肺癌、白血 病等[3]多種腫瘤細胞中呈高表達,并且表達量與乳腺癌和結直腸癌的惡性程度明顯相關
      [4] J0PK參與了腫瘤細胞周期進程[5-8]、腫瘤細胞轉化[9,10]、增殖[11]和凋亡[12,13] 等功能的調控。
      [0003] 近年越來越多的研究發(fā)現(xiàn)Τ0ΡΚ在腫瘤的臨床診斷以及預后預測中發(fā)揮了重要作 用。2010年Zlobec I等探討了在2000例結腸癌病例中Τ0ΡΚ的預后價值,提出Τ0ΡΚ高表達的 病例預后差,同時提出Τ0ΡΚ高表達的病例與酪氨酸激酶抑制劑的耐受有關,Τ0ΡΚ抑制劑的 發(fā)現(xiàn)將惠及30-40%結腸癌患者。另外,該研究組還指出Τ0ΡΚ激活相關機制的研究將對克服 酪氨酸激酶抑制劑的耐受有重要意義[14] jeschoolmeester D等認為Τ0ΡΚ是結腸癌的最 有價值的腫瘤標志物之一,與之相關的靶向治療應逐步展開[15]。也有文獻報道Τ0ΡΚ在肺 癌中的表達與Ki67(細胞增殖標記物)和p53密切相關,可能會成為非小細胞肺癌獨立的預 后指標[lehShih MC等也認為Τ0ΡΚ通過調控PI3K/AKT/PTEN信號通路影響肺癌細胞的轉 移,并可作為肺癌預后的指標和潛在的治療靶點[17]。另外,Chen F[18]等報道稱Τ0ΡΚ表達 水平在人肝癌組織和細胞系中顯著上調,在肝癌SMMC-7721細胞中基因沉默Τ0ΡΚ后導致細 胞周期停滯,抑制細胞生長和腫瘤形成,暗示著Τ0ΡΚ可能調節(jié)肝細胞的增殖,可能會成為肝 癌有意義的分子靶點和預后標志物。Jae-Hyun等[19]在對81例乳腺癌的全基因組表達譜進 行分析后發(fā)現(xiàn)Τ0ΡΚ上調,并且在其細胞的有絲分裂早期呈高表達,可能通過磷酸化Histone H3促進有絲分裂,從而增強腫瘤細胞的增殖。除此之外,Hu F[20]等人發(fā)現(xiàn)Myc-E2F1-T0PK 信號通路在惡性淋巴瘤中起著調控作用,Τ0ΡΚ可能會成為淋巴瘤免疫治療中的靶點。
      [0004] 隨著研究的深入,Τ0ΡΚ正逐漸成為新的腫瘤發(fā)生的標志物和抗腫瘤治療的靶點。 然而,目前對于Τ0ΡΚ的研究,兩個重要的研究瓶頸逐漸顯現(xiàn)出來。一是Τ0ΡΚ晶體結構解析困 難,導致其抑制劑領域的研究進行緩慢,阻礙了其用于臨床疾病診斷和治療的發(fā)展前景。其 次是Τ0ΡΚ的上游調控機制尚不完全清楚,目前已有報道hDlg[2],ERK2[9],c-Myc-E2Fl [20],P53[21],E2F-CREB/ATF[22]和 Cdkl/CyclinB[l,23]能與 Τ0ΡΚ 相互作用并調節(jié)其功 能。但是,非磷酸化的Τ0ΡΚ表達并不能準確體現(xiàn)Τ0ΡΚ在細胞內的活性,目前僅有研究表明蛋 白激酶Cdkl/Cycl inB和ERK2能在Thr9位點磷酸化激活Τ0ΡΚ,且研究證實Thr9位點磷酸化與 Τ0ΡΚ促進腫瘤發(fā)生的關系無關。因此,進一步尋找與腫瘤關系密切的Τ0ΡΚ磷酸化修飾機制, 即Τ0ΡΚ的上游激酶及磷酸化作用位點,并開發(fā)相應位點的磷酸化抗體,將有利于擴展Τ0ΡΚ 在臨床診斷、治療方面的實際應用。
      [0005] 參考文獻:
      [0006] l.Abe Y,Matsumoto S,Kito K,et al.Cloning and expression of a novel MAPKK-like protein kinase ,lymphokine-activated killer T~cel1-originated protein kinase,specifically expressed in the testis and activated lymphoid cells.J Biol Chem 2000;275:21525-21531.
      [0007] 2.Gaudet S,Branton D,Lue RA.Characterization of PDZ-binding kinase,a mitotic kinase.Proc Natl Acad Sci 2000;97:5167-5172.
      [0008] 3.Dougherty JD,Garcia AD,Nakano I,et al.ΡΒΚ/Τ0ΡΚ,a proliferating neural progenitor-specific mitogen activated protein kinase kinase.J Neurosci,2005;25(46):1077-10785.
      [0009] 4.Nandi A,Tidwell M,Karp J,et al.Protein expression of PDZ-binding kinase is up-regulated in hematologic malignancies and strongly down-regulated during terminal differentiation of HL_601eukemic cells.Blood Cells Mol Dis,2004;32(l):240-245.
      [0010] 5.Matsumoto S,Abe Y,Fujibuchi T,et al.Characterization of a MAPKK-like protein kinase PBK/TOPK.Biochem Biophys Res Commun 2004;325:997-1004.
      [0011] 6.Park JH,Nishidate T,Nakamura Y,et al.Critical roles of T-LAK cell-originated protein kinase in cytokinesis.Cancer Sci 2010;101:403-411.
      [0012] 7.Fukukawa C,Ueda K,Nishidate T,et al.Critical roles of LGN/ GPSM2phosphorylation by ΡΒΚ/Τ0ΡΚ in cell division of breast cancer cells.Genes Chromosomes Cancer 2010;49:861-872.
      [0013] 8·Shinde SR,Gangula NR,Kavela S,et al·ΡΒΚ/Τ0ΡΚ and PTEN participate in CHFR mediated mitotic checkpoint.Cell Signal 2013;25:2511-2517.
      [0014] 9.Zhu F,Zykova TA,Kang BS,et al.Bidirectional signals transduced by PBK/T0PK-ERK interaction increase tumorigenesis of HCT116 colorectal cancer cells.Gastroenterology 2007;133:219-231.
      [0015] 10.Oh SM,Zhu F,Cho YY,et al.T-lymphokine-activated killer cell-originated protein kinase functions as a positive regulator of c-Jun_NH2-kinase 1 signaling and H-Ras-induced cell transformation.Cancer Res 2007;67: 5186-5194.
      [0016] ll.Ayllon VjO'connor R.PBK/T0PK promotes tumour cell proliferation through p38MAPK activity and regulation of the DNA damage response.Oncogene 2007;26:3451-3461.
      [0017] 12.Zykova TA,Zhu F,Lu C,et al.Lymphokine-activated killer T-cell-originated protein kinase phosphorylation of histone H2AX prevents arsenite- induced apoptosis in RPMI7951melanoma cells . Clin Cancer Res 2006;12:6884-6893.
      [0018] 13.Zykova TA,Zhu F,Vakorina TI,et al.T-LAK cell-originated protein kinase(ΡΒΚ/Τ0ΡΚ)phosphorylation of Prxl at Ser-32 prevents UVB-induced apoptosis in RPMI7951 melanoma cells through the regulation of Prxl peroxidase activity.J Biol Chem2010;285:29138-29146.
      [0019] 14.Zlobec I,Molinari F,Kovac M,et al.Prognostic and predictive value of TOPK stratified by KRAS and BRAF gene alterations in sporadic,hereditary and metastatic colorectal cancer patients.Br J Cancer 2010;102:151-161.
      [0020] 15·Siegel RL,Miller KD,Jemal A·Cancer statistics,2015·CA Cancer J Clin 2015;65:5-29.
      [0021] 16.Lei B,Liu SG,Qi WJ,et al.ΡΒΚ/ΡΒΚ/Τ0ΡΚ expression in non-small-cell lung cancer: its correlation and prognostic significance with Ki67 and p53 expression[J].Histopathology,2013,63(5):696-703.
      [0022] 17.Shih MC,Chen JY,ffu YC,et al.PBK/TOPK promotes cell migration via modulation of the PI3K/PTEN/AKT pathway and is associated with poor prognosis in lung cancer[J].0ncogene,2011,31(19):2389-400.
      [0023] 18·Chen F,Li Rff,ffang CJ,et al.T-LAK cell-originated protein kinase is essential for the proliferation of hepatocellular carcinoma SMMC_7721cells [J].Cell Bioche Funct,2013,31(8):736-742.
      [0024] 19.Park JH,Lin ML,Nishidate T,et al.PDZ-binding kin
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