CN114028400B - 一种含有细胞周期蛋白激酶抑制剂的药物组合物及其制备方法 - Google Patents
一种含有细胞周期蛋白激酶抑制剂的药物组合物及其制备方法 Download PDFInfo
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Abstract
本发明涉及一种含有细胞周期蛋白抑制剂的药物组合物及其制备方法,具体而言,该药物组合物以N‑环戊基‑5‑(2‑((5‑((4‑乙基哌嗪‑1‑基)甲基)吡啶‑2‑基)氨基)‑5‑氟嘧啶‑4‑基)‑4‑甲基噻唑‑2‑胺或其盐为活性成分,制备得到的口服固体制剂具有优异的溶出行为和良好的生物利用度,符合临床应用需求,并且该药物组合物杂质含量极低、稳定性较好,能够保证药物的质量可控;同时湿法/干法制粒的制备工艺简单易操作,有利于药物的工业化生产。
Description
技术领域
本发明属于药物制剂领域,具体涉及一种含有细胞周期蛋白激酶抑制剂的药物组合物及其制备方法。
背景技术
细胞周期蛋白依赖性激酶(CDKs)是与细胞周期进程相对应的一套Ser/Thr激酶***。它们与各种细胞周期蛋白亚基相关,在细胞各种重要的调节通路中起关键作用,包括细胞周期控制、细胞凋亡、神经元生理机能、分化和转录。目前共有超过20种CDK,按功能主要分为细胞周期调节剂CDK和转录调节剂CDK两大类。细胞周期调节剂CDK包括CDK1、CDK2、CDK3、CDK4和CDK6,它们与细胞周期蛋白配体(例如细胞周期蛋白A、B、D1、D2、D3、E和F)共同作用调节细胞周期进程。转录调节剂CDK包括CDK7、CDK8、CDK9和CDK11,它们与细胞周期蛋白C、H、K、L1、L2、T1和T2共同作用,主要参与转录调节。基于此可以断定CDK与细胞增殖性疾病和病症特别是癌症密切相关。细胞增殖是细胞***周期直接或间接失控的结果,CDK在该周期的各个阶段调节中起关键作用。因此,CDK及其相关细胞周期蛋白的抑制剂被认为是癌症治疗的有效靶向药物。
CDK4/6作为抗肿瘤靶点的优势在于:(1)CDK4/6抑制剂不表现出泛CDK抑制剂的细胞毒性,如骨髓抑制和肠道反应;(2)细胞cyclin D水平升高或者P161NK4a失活,能够增加细胞对药物的敏感性,肿瘤细胞相对于正常细胞存在上述现象,所以一定程度增加了药物的靶向性。
式I化合物是一种靶向型CDK4/6激酶抑制剂,能够选择性抑制细胞周期蛋白依赖性激酶4/6,恢复细胞周期控制,阻断肿瘤细胞增殖。
然而,式I化合物及其盐的水中溶解度约为40μg/mL,不溶或几乎不溶,这直接影响了该化合物在体内的吸收和生物利用度,因此需通过对处方、剂型及处方工艺进行层层筛选和优化,以获得具有优异的溶出度和生物利用度的药物组合物。
发明内容
本发明的目的在于提供一种稳定性良好、溶出迅速、生物利用度高的含有CDK4/6激酶抑制剂的药物组合物,并且该药物组合物的制备工艺简单,更适合工业化生产。
本发明解决上述技术问题的技术方案如下:
本发明的第一方面提供了一种药物组合物,其含有活性成分式I化合物或其可药用盐,以及药学上可接受的赋形剂,所述活性成分占药物组合物重量的25%~75%,
进一步的,所述式I化合物的盐为琥珀酸盐,所述赋形剂包括崩解剂、稀释剂或润滑剂中的一种或几种;
进一步的,所述稀释剂选自糖、糖醇、淀粉或纤维素中的一种或几种,所述稀释剂占药物组合物重量的15%~60%;
进一步的,所述崩解剂选自聚维酮类或纤维素类衍生物中的一种或几种,所述崩解剂占药物组合物重量的1%~15%;
进一步的,所述润滑剂选自滑石粉,所述润滑剂占药物组合物重量的0.1%~5%;
本发明的第二方面提供了一种药物组合物,按重量份数计,含有如下组分:
其中,所述稀释剂选自乳糖、微晶纤维素或淀粉中的一种或几种;所述崩解剂选自交联聚维酮或交联羧甲基纤维素钠中的一种或几种;所述润滑剂选自滑石粉;
在优选的实施方案中,本发明提供了一种药物组合物,按重量份数计,含有如下组分:
任选的,所述药物组合物中还可以包括矫味剂、着色剂或包衣剂中的一种或几种;
同时,为了保证药物组合物具有良好的生物利用度,本发明所述的药物组合物优选制成口服固体制剂,更优选制成片剂或胶囊剂;
本发明所述药物组合物的溶出度根据中国药典2020版四部通则0931法溶出度测定第二法(桨法)进行测定,所述活性成分的溶出度在30分钟大于或等于90%,优选大于或等于95%;
本发明的第三方面提供了两种上述药物组合物的制备方法:
第一种方法通过湿法制粒完成,包括如下步骤:
(1)在料斗混合机或湿法制粒机中预混合式I化合物或其盐和包括崩解剂在内的大多数赋形剂,获得预混合物;
(2)添加润湿剂,将步骤(1)预混合物在湿法制粒机或流化床中制粒;
(3)在流化床干燥器或干燥箱中干燥步骤(2)的颗粒;
(4)任选的,整粒机粉碎筛分步骤(3)的干燥颗粒;
(5)在料斗混合机混合步骤(4)的干燥颗粒与剩余赋形剂,获得最终混合物;
(6)任选的,通过合适的胶囊灌装机灌装上述步骤(5)的混合物,制备胶囊剂;
(7)任选的,通过合适的压片机压制上述步骤(5)的混合物,压片制得片芯;
(8)任选的,用膜包衣对步骤(7)的片芯进行薄膜包衣。
第二种方法通过干法制粒完成,包括如下步骤:
(1)在料斗混合机中混合式I化合物或其盐和包括崩解剂在内的大多数赋形剂,获得预混合物;
(2)在合适的干法制粒机中将步骤(1)的混合物压实获得带状物;
(3)用干法制粒机通过合适的粉碎或筛分步骤,将步骤(2)的带状物碎成颗粒;
(4)在混合机中混合步骤(3)和剩余赋形剂,获得最终混合物;
(5)任选的,通过合适的胶囊灌装机灌装上述步骤(4)的混合物,制备胶囊剂;
(6)任选的,通过合适的压片机压制上述步骤(4)的混合物,压片制得片芯;
(7)任选的,用膜包衣对步骤(6)的片芯进行薄膜包衣。
本发明的第四方面提供了上述药物组合物在制备治疗和预防增殖性紊乱引起的疾病或病症的药物中的用途,优选在制备抗癌症药物中的用途。
本发明中化合物的中文命名与结构式有冲突的,以结构式为准;结构式有明显错误的除外。
本发明的有益效果在于:本发明提供了一种以N-环戊基-5-(2-((5-((4-乙基哌嗪-1-基)甲基)吡啶-2-基)氨基)-5-氟嘧啶-4-基)-4-甲基噻唑-2-胺或其盐为活性成分的药物组合物,该药物组合物具有优异的溶出行为和良好的生物利用度,符合临床应用需求,并且该药物组合物杂质含量极低、稳定性较好,能够保证药物的安全性、有效性和质量可控性;同时制备工艺简单,有利于药物的规模化生产。
具体实施方式
以下结合实例说明本发明,但不限制本发明。在本领域内,技术人员对本发明所做的简单替换或改进均属于本发明所保护的技术方案内。
定义
术语“癌症”包括但不限于下述癌症:白血病、乳腺癌、卵巢癌、***、***癌、睾丸癌、食道癌、胃癌、皮肤癌、肺癌、骨癌、结肠癌、胰腺癌、甲状腺癌、胆道癌、咽癌、唇癌、舌癌、口腔癌、咽喉癌、小肠癌、结肠-直肠癌、大肠癌、直肠癌、脑和中枢神经***癌症、恶性脑胶质瘤、膀胱癌、肝癌、肾癌、淋巴癌、神经内分泌肿瘤等。
实施例1:基准处方的筛选
难溶性药物开发成为口服固体制剂,由于药物溶解性较低,提高其在动物体内生物利用度显得尤为关键。在制剂处方筛选的动物体内试验中,设计真溶液组和混悬液组,分别与制剂处方的基准处方组进行对比。各处方组成及制备方法如下表所示。
将上述制备得到的各处方由食蟹猴经口给药,测试生物利用度,对处方进行预评价,结果如下表所示。食蟹猴口服胶囊制剂后的血浆药物暴露量较高,生物利用度均值为50%,相比真溶液组和混悬液组高出1倍,获得了意想不到的结果。通过动物体内试验对比,筛选出用于处方优化和工艺开发的基准处方,按药物组合物重量计,该基准处方包括40.0%式I化合物的琥珀酸盐、40.0%微晶纤维素、17.0%乳糖和3.0%交联聚维酮。
实施例2:处方的筛选优化
(1)单位处方组成(单位:mg)
注:“/”代表未添加
(2)制备
将上述1000片处方量式I化合物的琥珀酸盐和其他赋形剂投入料斗混合机混合均匀,中控含量、均匀度,灌装胶囊。
(3)质量评估
按处方表中的比例进行混合后,获得的制剂颗粒的松装密度在0.29~0.30g/cm3,休止角在46.67°至48.18°,尚需对处方工艺进行优化。
溶出度测定结果显示,对于100mg规格的胶囊,以上各处方30分钟溶出度均能符合预期要求。
实施例3:处方工艺的优化
(1)单位处方的组成(单位:mg)
(2)制备
将上述1000片处方量式I化合物的琥珀酸盐和其他赋形剂投入湿法制粒机中混合均匀后,湿法制粒、整粒,经流化床干燥后整粒,总混后获得总混颗粒,中控含量、均匀度,灌装胶囊。
(3)质量评估
影响因素试验考察,按照中国药典2020版对上述处方进行影响因素稳定性考察,于高温、高湿和光照条件下分别在第5天和第10天取样检测,检测结果如下表:
上述不同处方工艺获得的胶囊流动性较好,松装密度符合灌装要求,获得的胶囊成品在30分钟内溶出均符合要求。在高温、高湿和光照条件下进行影响因素试验考察,单杂和总杂均在可接受范围内,30分钟内的溶出也都符合要求。
实施例4:润滑剂的最优化
(1)单位处方的组成(单位:mg)
(2)制备
将上述1000片处方量式I化合物的琥珀酸盐和其他赋形剂投入湿法制粒机中混合均匀后,湿法制粒、整粒,经流化床干燥后整粒,总混后获得总混颗粒,中控含量、均匀度,灌装胶囊。
(3)溶出数据
(4)稳定性考察
按照原料药与制剂稳定性试验指导原则(中国药典2020版四部通则)对实施例4进行加速稳定性试验,在加速条件40±2℃/75%±5%RH下放置6个月,取样时间点为1、2、3及6月,检测结果,如下表所示。
上述实验结果可看出,本发明得到的组合物具有杂质含量低、溶出度高、稳定性好等优点。因药物溶出度测定结果与药物体内生物利用度密切相关,溶出度测定法能够用于对药物生物利用度进行评价以及研究替代。因此上述结果也表明,经过处方及工艺筛选后得到的含有细胞周期蛋白激酶抑制剂的药物组合物也具有良好的生物利用度,符合临床用药需求。
以上所述的仅是本发明的优选实施方式,应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (4)
1.一种药物组合物,含有活性成分式I化合物可药用盐,以及药学上可接受的赋形剂,所述活性成分占药物组合物重量的25%~75%,所述式I化合物的盐为琥珀酸盐,所述赋形剂包括崩解剂、稀释剂和润滑剂,所述稀释剂为乳糖和微晶纤维素,所述稀释剂占药物组合物重量的15%~60%,所述崩解剂为交联聚维酮,所述崩解剂占药物组合物重量的1%~15%,所述润滑剂选自滑石粉,所述润滑剂占药物组合物重量的0.1%~5%,
2.一种药物组合物,其特征在于,按重量份数计,含有如下组分:
其中,所述稀释剂为乳糖和微晶纤维素;所述崩解剂选自交联聚维酮;所述润滑剂选自滑石粉。
3.根据权利要求1~2任一项所述的药物组合物,其特征在于,所述药物组合物的溶出度根据中国药典2020版四部通则0931法溶出度测定第二法(桨法)进行测定,所述活性成分的溶出度在30分钟大于或等于90%。
4.根据权利要求1~2任一项所述的药物组合物在制备抗癌症药物中的用途。
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