Page 84 - 《中国药房》2021年8期
P. 84

ABSTRACT    OBJECTIVE:To establish the method for the content determination of related substances in belinstat. METHODS:
        HPLC method was adopted and the principal component self-control comparison method with correction factor was used to calculate
        the contents of related substances. The determination was performed on ODS-AM column with 1.02% potassium dihydrogen
        phosphate buffer(pH value adjusted to 3.5 with phosphoric acid)-acetonitrile(85 ∶ 15,V/V)as mobile phase A,1.02% potassium
        dihydrogen phosphate buffer (pH value adjusted to 3.5 with phosphoric acid)-acetonitrile (30 ∶ 70,V/V) as mobile phase B
        (gradient elution),at the flow rate of 1.0 mL/min. The column temperature was set at 30 ℃,and the detection wavelength was
        220 nm. The sample size was 10 μL. RESULTS:The linear ranges of belinstat and impurities A,D,F,G,H were 0.113-1.693,
        0.050-1.496,0.117-1.750,0.098-1.471,0.120-1.799,0.100-1.506 μ g/mL (r≥0.999 7). The correction factors of the last 5
        impurities were 1.0,1.0,1.2,1.5,1.0;the detection limits were 0.250,0.590,0.490,0.600,0.500 ng,respectively. The
        quantification limits were 0.500,1.170,0.980,1.200,1.000 ng,respectively. The recoveries were 90.18% -111.48% (RSD=
        1.52% -4.78% ,n=9). RSDs of stability (100 h) and precision tests were no more than 16% ,and the durability was good.
        Impurities A,D and H were detected in 3 batches of belinlestat,the contents were 0.030% -0.038% ,0.019% -0.022% and
        0.012%-0.013%,respectively. The contents of other maximum monomer impurities were 0.012%-0.013% and the total impurities
        were 0.075%-0.084%. Impurities B,C,F,G were not detected. CONCLUSIONS:The method for the content determination of
        related substances in belinstat has been successfully established,and the method is accurate and specific.
        KEYWORDS     Belinostat;Related substances;HPLC;Principal component self-control comparison method with correction factor


            贝林司他(结构式见图1)是一种组蛋白去乙酰化酶                         新增或含量出现增长的杂质列为降解杂质。有关物质
        (HDAC)抑制剂,由美国 Spectrum Technologies 公司和             是药品质量研究的关键项目之一,其含量高低是反映药
        丹麦 TopoTarget 公司联合研发生产,主要用于治疗复发                     品纯度的直接指标。有研究指出,对药品的纯度要求,
        性或难治性外周T细胞淋巴瘤(PTCL)              [1-5] 。贝林司他于       应基于安全性和生产实际情况两方面的考虑 。基于
                                                                                                    [18]
        2009年被授予孤儿药地位,用于治疗PTCL;2013 年,贝                     此,本研究采用高效液相色谱法(HPLC)联合加校正因
        林司他的 PTCL 二期临床结果超过预期值,其新药申请                         子的主成分自身对照法针对贝林司他生产及贮藏中可
        于 2014 年 2 月 6 日被美国 FDA 受理,并于 2014 年 7 月 3          能引入的7种杂质进行定性分析,考虑到杂质对照品的
        日通过审批获准上市。目前,在国内已有盛世泰科生物                            可获得性仅对其中5种杂质进行定量分析,以期能将各
        医药技术(苏州)有限公司和石药控股集团有限公司对                            杂质及主成分有效分离,并为贝林司他的质量控制提供
                            [6]
        其进行仿制药临床申报 。                                        参考。
                                                            1 材料
                                                            1.1  主要仪器
                      图1   贝林司他的结构式                             本研究所用主要仪器包括 e2695 型 HPLC 仪(美国
                 Fig 1 Structure chart of belinostat        Waters公司)、XP205型电子分析天平(瑞士Mettler Tole-

            临床前体外药效学研究显示,贝林司他对各种                            do公司)等。
        HDAC的抑制作用较好,其不仅能够提高组蛋白的乙酰                           1.2  主要药品与试剂
        化水平,还能够促进细胞凋亡;更重要的是,贝林司他可                               贝林司他原料药(批号 171201、180101、180102,纯
        优先杀伤肿瘤细胞而非正常细胞,并可抑制纳摩尔浓度                            度≥99%)、杂质 A 对照品(批号 140813,纯度 99.3%)、
        HDAC 的活性     [7-11] 。毒性研究显示,贝林司他有一定的                杂质 B 对照品(批号 140810,纯度 99.5%)、杂质 C 对照
        毒性,但是相对于该药给复发性、难治性淋巴瘤患者带                            品(批号 140822,纯度 99.4%)、杂质 D 对照品(批号
        来的临床获益,这些毒性反应是可以接受的                     [12-14] 。此  140801,纯度 99.9%)、杂质 F 对照品(批号 140806,纯度
        外,贝林司他用于治疗卵巢癌、胸腺上皮癌、骨髓异常增                           99.1%)、杂质G对照品(批号150416,纯度99.5%)、杂质
        生症、恶性腹膜间皮瘤等其他肿瘤的二期临床试验研究                            H对照品(批号140903,纯度98.6%)均由深圳万乐药业
        结果均显示,其具有较好的疗效               [14-17] 。由此可见,贝林       有限公司提供;乙腈为色谱纯,其余试剂均为分析纯,水
        司他的临床使用前景良好。                                        为纯化水。
            有关物质主要是在生产过程中带入的起始原料、中                          2 方法与结果
        间体、聚合体、副反应产物,以及贮藏过程中的降解产物                           2.1 色谱条件
        等,其中生产过程中带入的列为工艺杂质,贮藏过程中                                以 ODS-AM(250 mm×4.6 mm,5 μm)为色谱柱,以


        ·974 ·   China Pharmacy 2021 Vol. 32 No. 8                                   中国药房    2021年第32卷第8期
   79   80   81   82   83   84   85   86   87   88   89