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    • 9. 发明申请
    • METHOD TO SCREEN HIGH AFFINITY ANTIBODY
    • 筛选高亲和力抗体的方法
    • WO2010022910A1
    • 2010-03-04
    • PCT/EP2009/006136
    • 2009-08-25
    • F. HOFFMANN-LA ROCHE AGSCHRAEML, MichaelVON PROFF, Leopold
    • SCHRAEML, MichaelVON PROFF, Leopold
    • G01N21/55
    • G01N33/6854C07K16/26G01N21/553
    • The current invention reports a method for producing an antibody comprising the steps of a) providing a plurality of hybridoma cells each expressing an antibody, b) determining the time dependent amount of said antibody bound to the respective antigen by surface plasmon resonance at different temperatures and different antibody concentrations, c) calculating with the time dependent amount determined in b) based on equations (II) to (XIII) at least the thermodynamic parameters (i) standard association binding entropy formula (A), (ii) standard dissociation binding entropy formula (B), (iii) standard binding entropy (ΔS°), (iv) free standard binding enthalpy (ΔG°), (v) standard dissociation free binding enthalpy formula (C), (vi) standard association free binding enthalpy formula (D), (vii) -TΔS°, (viii) dissociation rate constant k d , (ix) equilibrium binding constant K D , and (x) association rate constant k a , d) selecting a hybridoma cell producing an antibody with at least two of the following: i) a standard association binding entropy of less than 10 J/K*mol, ii) an absolute standard dissociation binding entropy of 100 J/mol*K or more, iii) an absolute standard binding entropy of 100 J/mol*K or more, e) producing an antibody by cultivating said selected cell under conditions suitable for the expression of said antibody and recovering said antibody from the cells or/and the cultivation medium.
    • 本发明报告了一种制备抗体的方法,包括以下步骤:a)提供多个表达抗体的杂交瘤细胞,b)通过在不同温度下的表面等离振子共振测定与相应抗原结合的所述抗体的时间依赖性量, 不同的抗体浓度,c)基于等式(II)至(XIII),至少在热力学参数(i)标准关联结合熵公式(A),(ii)标准解离结合熵 式(B),(iii)标准结合熵(ΔS°),(iv)游离标准结合焓(ΔG°),(v)标准无离子结合焓式(C),(vi) 焓公式(D),(vii)-T≤S°,(viii)解离速率常数kd,(ix)平衡结合常数KD和(x)缔合速率常数ka,d)选择产生抗体的杂交瘤细胞 至少有两个 以下:i)小于10J / K * mol的标准缔合结合熵,ii)100J / mol * K以上的绝对标准解离结合熵,iii)绝对标准结合熵为100J / mol * K以上,e)通过在适于表达所述抗体的条件下培养所述选择的细胞并从细胞或培养基中回收所述抗体来产生抗体。