CN1973820A - 含雷帕霉素的抗癌组合物及其应用 - Google Patents
含雷帕霉素的抗癌组合物及其应用 Download PDFInfo
- Publication number
- CN1973820A CN1973820A CNA2006102013410A CN200610201341A CN1973820A CN 1973820 A CN1973820 A CN 1973820A CN A2006102013410 A CNA2006102013410 A CN A2006102013410A CN 200610201341 A CN200610201341 A CN 200610201341A CN 1973820 A CN1973820 A CN 1973820A
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- Prior art keywords
- acid
- rapamycin
- copolymer
- release
- slow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
一种含雷帕霉素的抗癌组合物为缓释注射剂,由缓释微球和溶媒组成。其中缓释微球包括抗癌有效成分和缓释辅料,溶媒为含助悬剂的特殊溶媒。抗癌有效成分为雷帕霉素与选自抗肿瘤抗生素和/或抗代谢类药物的抗癌药物的组合;缓释辅料选自聚乳酸及其共聚物、双脂肪酸与癸二酸共聚物、聚(芥酸二聚体-癸二酸)、聚(富马酸-癸二酸)和聚苯丙生之一或其聚合物或混合物;助悬剂的黏度为100cp-3000cp。缓释微球还可制成缓释植入剂,肿瘤内或瘤周注射或放置,释药大约40天,缓释注射剂和缓释植入剂单独应用能有效抑制肿瘤生长,还可有效地抑制或破坏肿瘤的血管并能抑制肿瘤的新生血管,增加肿瘤细胞对抗癌药物的敏感性。
Description
(一)技术领域
本发明涉及一种含雷帕霉素的组合物,属于药物技术领域。具体而言,本发明提供一种含雷帕霉素的缓释注射剂和缓释植入剂。
(二)背景技术
传统的化疗不具选择性,难于肿瘤局部形成有效药物浓度或治疗剂量,效果差,毒性大,单纯提高药物或放射剂量又受到全身毒性反应的限制。参见孔等“瘤内放置顺铂加系统卡莫司汀治疗大鼠脑肿瘤”《外科肿瘤杂志》69期76-82页,1998年(Kong Q et al.,J SurgOncol.1998 Oct;69(2):76-82)。
低剂量的抗癌药物治疗不仅能够增加癌细胞的药物耐受性,而且还可促进其浸润性生长”,参见梁等“抗癌药物脉冲筛选后增加了人肺癌细胞的药物耐受性及体外浸润能力并伴有基因表达的改变”《国际癌症杂志》111期484-93页,2004年(Liang Y,et al.,Int JCancer.2004;111(4):484-93)。
抗肿瘤药物局部放置能够较好地克服以上缺陷,不仅能够明显提高肿瘤局部的药物浓度,而且可以显著降低全身毒性反应。大量体内外试验已显示出对实体肿瘤的治疗效果,参见孔庆忠等“瘤内放置顺铂加系统卡莫司汀治疗大鼠脑肿瘤”《外科肿瘤杂志》69期76-82页,1998年(Kong Q et al.,J Surg Oncol.1998 Oct;69(2):76-82)和孔庆忠等“瘤内放置顺铂治愈大鼠原发脑肿瘤”《外科肿瘤杂志》64期268-273页(1997年)(Kong Q et al.,JSurg Oncol.1997 Oct;64:268-273)。还可参见中国专利(ZL00111093.4;ZL96115937.5;申请号001111264,001111272)及美国发明专利(专利号6,376,525B1;5,651,986;5,626,862)。
然而,实体肿瘤间质中的血管不仅为肿瘤细胞的生长提供了支架及必不可少的营养物质,还影响了化疗药物在肿瘤周围及肿瘤组织内的渗透和扩散,参见尼提等“细胞外间质的状况对实体肿瘤内药物运转的影响”《癌症研究》60期2497-503页,2000年(Netti PA,Cancer Res.2000,60(9):2497-503)。因此构成肿瘤化疗的主要障碍。
不仅如此,肿瘤间质中的血管对常规化疗药物并不敏感,特别是单药物化疗,常导致肿瘤细胞对抗癌药物的耐受性的增强,其结果是治疗失败。
(三)发明内容
本发明针对现有技术的不足,提供一种新的药物组合物,含雷帕霉素和抗癌药物。更具体而言,是抗实体肿瘤的缓释剂,主要为缓释植入剂和缓释注射剂。局部应用可有效地抑制或破坏肿瘤的血管并能抑制肿瘤的新生血管;除能抑制肿瘤生长外,还能增加肿瘤细胞对抗癌药物的敏感性;该抗实体肿瘤缓释剂还有效降低肿瘤内的张力、间质压力、间质粘性,进而提高其间质液导率,有利于药物进入实体肿瘤以及在肿瘤内的有效扩散。
除此之外,将雷帕霉素和抗癌药物制成缓释剂(主要为缓释注射剂和缓释植入剂)不仅能够极大地提高肿瘤局部的药物浓度、降低药物在循环系统中的药物浓度、降低药物对正常组织的毒性,还能够极大方便药物注射、减少手术操作的并发症、降低病人的费用。以上意外发现构成本发明的主要内容。
本发明抗实体肿瘤缓释剂包括抗癌有效成分和药用辅料,抗癌有效成分选自抗肿瘤抗生素和/或抗代谢类药物和雷帕霉素。雷帕霉素为血管抑制剂,除具有抑制肿瘤细胞生长的作用外,可有效地抑制或破坏肿瘤的血管并能抑制肿瘤的新生血管的形成,进而不仅使肿瘤细胞失去生长所需的支架及营养物质的来源,还可明显促进化疗药物进入肿瘤及在肿瘤周围及肿瘤组织内的渗透和扩散。
本发明的组合物可制成任意制剂形式,如,但不限于,胶囊、缓释剂、颗粒剂、丸剂、片剂、散剂、注射剂、软膏、贴剂、植入剂、缓释剂植入剂、缓释剂注射剂等。其中以缓释剂为优选,以缓释剂植入剂和缓释剂注射剂为最优选。
本发明针对现有技术的不足,提供一种新的含雷帕霉素和抗癌药物的缓释注射剂,由以下成分组成:
(A)缓释微球,包括:
抗癌有效成分 0.05-60%
缓释辅料 40-99%
助悬剂 0.0-30%
以上为重量百分比
和
(B)溶媒,为普通溶媒或含助悬剂的特殊溶媒。
其中,
抗癌有效成分为雷帕霉素和抗癌药物,所述抗癌药物选自抗肿瘤抗生素和/或抗代谢类药物。抗癌药物除能抑制肿瘤生长外,还能增加肿瘤细胞对雷帕霉素的敏感性。
本发明的给药方式为局部缓释给药,在显著增强药物的治疗效果的同时明显降低其全身的毒性作用。缓释体系主要是缓释辅料。药用辅料有数百种以上,具有缓释作用的药用辅料,特别是能将本发明中所选的雷帕霉素和抗癌药物在人体或动物体内于一定的时间内缓慢释放的药用辅料必须经过大量创造性的实验才能获得,特定的缓释辅料与可被缓释药物的组合的选择需要经过大量的创造性劳动才能确定。释放过慢不足以获得有效药物浓度,因而不能有效杀死肿瘤细胞;若释放过快会造成突释,则容易像常规注射一样引起全身毒性反应。相关数据,特别是动物体内释放特性的数据需要经过体内外大量创造性的实验才能获得,并非经过有限的实验就能确定,具有非显而易见性。
以上意外发现构成本发明的主要内容。
缓释辅料粘度范围IV(dl/g)为0.1~0.8,选自外消旋聚乳酸(D,L-PLA)、外消旋聚乳酸/乙醇酸共聚物(D,L-PLGA)、单甲基聚乙二醇/聚乳酸(MPEG-PLA)、单甲基聚乙二醇/聚乳酸共聚物(MPEG-PLGA)、聚乙二醇/聚乳酸(PLA-PEG-PLA)、聚乙二醇/聚乳酸共聚物(PLGA-PEG-PLGA)、端羧基聚乳酸(PLA-COOH)、端羧基聚乳酸/乙醇酸共聚物(PLGA-COOH)、聚苯丙生、双脂肪酸与癸二酸共聚物(PFAD-SA)、聚(芥酸二聚体-癸二酸)[P(EAD-SA)]、聚(富马酸-癸二酸)[P(FA-SA)]、聚乳酸(PLA)、聚乙醇酸和羟基乙酸的共聚物(PLGA)、聚对二氧环己酮(PDO)、聚三亚甲基碳酸酯(PTMC)、木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆、蛋白胶之一或其组合;助悬剂选自羧甲基纤维素钠、(碘)甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、表面活性物质、土温20、土温40和土温80之一或其组合。
雷帕霉素为血管抑制剂和/或蛋白水解酶,血管抑制剂除具有抑制肿瘤细胞生长的作用外,可有效地抑制或破坏肿瘤的血管并能抑制肿瘤的新生血管的形成,进而不仅使肿瘤细胞失去生长所需的支架及营养物质的来源,与蛋白水解酶合用或单独应用还可明显促进化疗药物进入肿瘤及在肿瘤周围及肿瘤组织内的渗透和扩散;蛋白水解酶可有效降解肿瘤间质中的血管及结缔组织中的纤维蛋白及胶原蛋白等成分,有效降低肿瘤内的张力、间质压力、间质粘性,进而提高其间质液导率,有利于药物进入实体肿瘤以及在肿瘤周围及肿瘤组织内的渗透和扩散。
雷帕霉素在组合物中所占的比例因具体情况而定,可从0.001%-60%,以0.05%-20%为佳,以0.1%-10%为最佳。
抗肿瘤抗生素主要选自癌霉素、博来霉素(Bleomycin,平阳霉素、博来霉素A5)、(盐酸)博来霉素、佐尔博霉素、哌来霉素、硫酸哌来霉素、抗生素1588、波外定、克大霉素、乙酰克大霉素(乙酰贵田霉素)、阿佐霉素(含氮霉素)、柔红霉素(正定霉素,道诺霉素,daunomycin)、环霉素,消癌菌素(carzinocidin)、嗜癌素(carzinophylin)、嗜癌霉素、瘤菌素、治癌菌素(carzinostatin,制癌菌素)、新制癌菌素(neocarzinostain)、重氮霉素(diazamycine)、大菌素(macrocin)、大菌霉素(macrocinomycin)、更生霉素、丙氨菌素、丙氨肽霉素、阿乐盖、新丝菌素(neothricin,neothramycin)、大分子霉素(macromomycin或macromycin)、新塞那霉素、诺卡菌素(nocardin)、诺卡菌红素(nocardorubin)、诺卡型霉素(noformicin)、诺加霉素(诺加拉霉素,nogalamycin or nogaromycin)、丝裂红素(mitochromine or mitocromine)、多粘菌素E(Polymyxin E)、吡利霉素(Pirlimycin)、地红霉素(Dirithromycin)、安曲霉素、恶溶菌素、达佐霉素、橄榄霉素、链黑霉素、链黑霉素甲酯、链脲霉素、培洛霉素、嘌罗霉素、司帕霉素、埃坡霉素D、他利霉素、羟硝氨糖环素、蒽霉素(氨茴霉素,安拉霉素)、甲基蒽霉素、艾菲地可宁、曲林菌素、(盐酸)卡米诺霉素、他利霉素、巨毛霉素、去甲柔毛霉素、氯脲霉素、色霉素A3、去甲利福平、蒽环霉素-A、黑他七霉素、脱氧助间型霉素、嘌呤霉素、盐酸嘌呤霉素、雷查霉素、瑞必克霉素、桑霉素、抗癌霉素、西伯利亚霉素、他利霉素、米托佐罗、硒唑呋喃、斯潘格宁、盐酸锗螺胺、锗螺胺、螺妙斯定、抗癌锑、阿柔比星(阿克拉霉素,Aclacinomycin A)、阿克拉霉素-B、依达比星(Idarubicin Hydrochloride,去甲氧柔红霉素)、蛇形菌素(Diacetoxysciroenol)、克拉霉素(Clarithromycin)、盐酸阿可达佐、阿可达佐、多柔比星(doxorubicin)、表柔比星(Epirubicin)、戊柔比星(valrubicin)、吡柔比星、洛撒蒽醌、洛索蒽醌(Losoxantrone)、米托蒽醌(Mitoxantrone)、吡罗蒽醌(Piroxantrone)、替洛蒽醌(Teloxantrone)、氯佐星(chlorozotocin)。
以上抗肿瘤抗生素中,以博来霉素、道诺霉素、二乙氧醋酰阿霉素、诺卡菌素、诺卡菌红素、诺卡型霉素、诺加霉素、丝裂红素、多粘菌素E、吡利霉素、地红霉素、安曲霉素、培洛霉素、嘌罗霉素、司帕霉素、埃坡霉素D、蒽霉素、卡米诺霉素、嘌呤霉素、阿柔比星、阿克拉霉素-B、依达比星、蛇形菌素、克拉霉素、盐酸阿可达佐、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌、氯佐星为优选。
以上抗肿瘤抗生素药物还包括其盐,如,但不限于,硫酸盐、磷酸盐、盐酸盐、乳糖酸盐、醋酸盐、天冬酸盐、硝酸盐、枸橼酸盐、嘌呤或嘧啶盐、琥珀酸盐或马来酸盐。
上述抗癌抗生素在组合物中所占的比例因具体情况而定,可为0.1%-50%,以1%-40%为佳,2%-30%为最佳。
抗代谢类药物可以分别在不同环节阻止DNA的合成,抑制细胞分裂增殖,通过影响细胞周期和DNA合成而发挥作用。
抗代谢类药物选自下列之一或组合:包括,培美曲塞(Alimta)、培美曲塞二钠、鲁米曲塞、溶癌呤、硫酸肼、卫康醇、亚丝醌、芬可洛宁、异优散酮、抑素、氯屈磷酸、氯屈磷酸二钠、环亮氨酸、地查枸林、甲黄酸地查枸林、白瑞夸尔、奥昔嘌醇、澳马利特、溴巴酸(钠)、百利德定、溴脲苷、氟脲己胺、10-乙基去氮氨蝶呤氨基扑发宁)、5,10-双去氮四氢叶酸、甲满蝶呤、丁巯嘌呤、丁克他酰胺、胱氮杂乌苷、戊稀吲哚、硫若星、甲氧檗因、甲酰溶肉瘤素、氨(基)蝶呤(aminopterin)、氨蝶呤钠(Aminopterin Sodium)、二甲胺腺苷、(硝基)咪唑硫嘌呤(azathioprine)、重氮丝氨酸(azaserine)、雷替曲塞(Raltitrexed)、盐酸洛拉曲克、槐定碱、甲酰四氢叶酸、甲基四氢高叶酸、唑来磷酸、雷替曲占、替莫唑胺、比卡鲁胺、门冬酰胺酶(L-Asparaginase,左旋门冬酰胺)、坤来斯巴、三嗪苯酰胺、曲麦克特、曲马多、氯巴比酸、5-重氮脲嘧啶、吡拉西坦、5-氟尿嘧啶核苷、5-氟尿嘧啶脱氧核苷又称氟脲嘧啶脱氧核苷、甘油柑碱、阿垒可散、HCFU、5’DFUR、TK-177、异恶唑醋酸、氨格鲁米特(乙苯胺哌啶酮,氨基导眠能,氨格鲁米特)、氨萘非特、氯胞苷、阿他美坦、氮杂胞苷(Azacitidine,5-氮杂胞苷,阿托胞苷,氮胞苷)、抗瘤氨酸(异芳芥,异位溶肉瘤素)、脱氧氮杂胞苷、右雷佐生(Dexrazoxane)、克雷斯托、克尼斯他酸、克拉利平、克拉利宾、扎西他滨,恩曲他滨、加洛他滨(Galocitabine)、吉西他滨(Gemcitabine)、伊巴他滨(Ibacitabine)、依诺他滨(Enocitabine)、安西他滨(Ancitabine)、地西他滨(Decitabine)、氟西他滨(Flurocitabine)、卡培他滨(Capecitabine)、咪唑他滨、克兰非鲁、卡拉酰胺、卡唑酰胺、卡巴萘醌、偶氮苯溴丙胺、姜黄素、姜黄素二酮、酮曲沙、三甲曲沙、斯泼古宁、去氧斯泼古宁、萘脲磷酸胺、氯化地特卡里、磷酸氟达那苷、氟苄噻酮、藤黄酸、戈舍瑞林、氮枸岭、海尼白瑞宁、肌苷二醛、氯苯氨啶、二溴甘露醇(Dibromomannitol,Mitobronitol)、二溴卫矛醇(Mitolactol)、柯替波斯地、益若蓝精、多潘(Chlorethylaminouracil,Dopan)、美洛格瑞、丙米腙、米托醌、米托坦、法扎拉滨(Fazarabine)、氟达拉滨(fludarabine)、克拉屈滨(cladribine)、戊糖苷(pentostatin)、苯来宁、苯来美特、磷嘧阿泽胺、匹毛尼唑、聚烯瑞尼酸、蝶酰天冬氨酸、蝶酰三谷氨酸、嘌米舌泊、利波腺苷、双曲秦、裂裥多糖、溴茴丙烯酸钠、氨偶氮苄、曲丁磺酯、三乙密胺、三亚胺醌、曲西瑞宾、磷酸曲西瑞宾、雷藤素甲、曲普瑞林、九布洛唑、优福定、威麦宁、z氮杂腺苷、扎西胞苷、依匹哌啶(Epipropidine)、阿莫诺期、阿多来新(Adozelesin)、阿克罗宁(Acronine)、阿拉诺新(Alanosine)、阿美蒽醌(Ametantrone)、阿那曲唑、阿那西戎、阿那昔酮(Anaxirone)、阿斯吲醒、阿西维辛(Acivicin)、阿替韦啶(Atevirdine)、艾多昔芬(idoxifene)、癌可萘、昂究吉宁、个鲁达卜辛、抗瘤酮、阿沙芳、芦笋精、芥吲酸、白瑞夸尔(钠)、(盐酸)必桑郡、格拉司琼、托烷司琼、氮烯咪胺、恩丹西酮、胸腺素、曲马多、甲磺酸伊马替尼、双氯芬酸、托氟杀星、托瑞米芬、安溴索、高乌甲素、耐普等因、胸腺肽、氟他胺、乙亚胺、胺苯、氧化新喹、N-甲基甲酰胺、牢可达唑、蒽甲硫脲、奥昔舒仑、氧化石蒜碱、泊芬撒尔、泊泽尼普定、戊必罗尔、螺氯丙醇、原白头翁素、佳代胞、雷替尼卜定、生索拉德、素道霉素、茄软酯碱、亚胺醌、斯替苯嘧啶、泰莫佐罗、台多西隆、硫奥里发新、硝氨丫啶、诺拉曲塞(nolatrexed dihydrochlormide)或安丫啶。
上述抗代谢类药物以培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、法扎拉滨、氟达拉滨、戊糖苷、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨、阿西维辛、曲普瑞林、艾多昔芬或诺拉曲塞为优选。
上述抗代谢类药物在组合物中的重量百分比从1%-50%,以5%-30%为佳。
当药物缓释微球中的抗癌药物仅为雷帕霉素或抗癌药物时,抗癌缓释注射剂主要用于增加其它途径应用的雷帕霉素或抗癌药物的作用效果,或用于对放疗或其它疗法的增效。当药物缓释微球中的抗癌药物仅为雷帕霉素或抗癌药物时,抗癌缓释注射剂的应用及增效方式为:
(1)含雷帕霉素的缓释注射剂局部注射,而抗癌药物经其他途径应用;
(2)局部注射含抗癌药物的缓释注射剂,其他途径应用雷帕霉素;
(3)局部注射含雷帕霉素的缓释注射剂与含抗癌药物的缓释注射剂;或
(4)局部注射含雷帕霉素和增效剂的缓释注射剂。
局部应用的抗癌缓释注射剂还用于对放疗或其它疗法的增效。其他途径指,但,不限于,动脉、静脉、腹腔、皮下、腔内给药。
抗癌有效成分雷帕霉素和/或抗癌药物在药物缓释微球中的重量百分比为0.05%-60%,以1%-40%为佳,以5%-30%为最佳。雷帕霉素与抗癌药物的重量比为1-99∶1到1∶1-99,以1-19∶1到1∶1-19为优选。
本发明抗癌药物组合物中抗癌有效成分为雷帕霉素和一种或数种抗癌药的组合,但优选如下:
(a)0.005%-20%的雷帕霉素与2%-40%博来霉素、道诺霉素、诺加霉素、嘌呤霉素、阿柔比星、依达比星、克拉霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合;或
(b)0.005%-20%的雷帕霉素与2%-40%培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、法扎拉滨、氟达拉滨、克拉屈滨,戊糖苷、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨、阿西维辛、曲普瑞林、艾多昔芬或诺拉曲塞的组合。
本发明的缓释辅料是可经酶、酸碱或组织液水解或降解的,包括下列之一或其组合:
(1)生物相容性多聚物,包括生物可降解的或不可生物降解的多聚物及其混合物或共聚物;
(2)水溶性低分子化合物;或/和
(3)用于实现针剂和缓释剂等药物剂型的合适的添加剂及赋型剂。
缓释辅料选自外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸、端羧基聚乳酸/乙醇酸共聚物、聚苯丙生、双脂肪酸与癸二酸共聚物、聚(芥酸二聚体-癸二酸)、聚(富马酸-癸二酸)、聚乳酸、聚乙醇酸和羟基乙酸的共聚物、木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆和蛋白胶之一或其组合。
本发明缓释微球中缓释辅料及其重量百分比最优选如下:
(1)55-95%的PLA;
(2)50-95%的PLGA;
(3)50-95%的聚苯丙生;
(4)55-95%的双脂肪酸与癸二酸共聚物;
(5)30-60%的聚苯丙生和30-60%的PLA或PLGA;
(6)40-95%的木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆或白蛋胶;或
(7)40-95%的外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸或端羧基聚乳酸/乙醇酸共聚物。
在各种高分子聚合物中,以聚乳酸、癸二酸、含聚乳酸或葵二酸的高分子多聚物的混合物或共聚物为首选,混合物和共聚物可选自,但不限于,PLA、PLGA、乙醇酸和羟基羧酸的混合物、葵二酸与芳香聚酐或脂肪族聚酐的混合物或共聚物。乙醇酸和羟基羧酸的共混比例是10/90-90/10(重量),最好是25/75-75/25(重量)。共混的方法是任意的。乙醇酸和羟基羧酸共聚时的含量分别为重量百分比10-90%和90-10%。芳香聚酐的代表物是聚苯丙生[聚(1,3-二(对羧基苯氧基)丙烷-癸二酸)(p(CPP-SA))、双脂肪酸-癸二酸共聚物(PFAD-SA)]、聚(芥酸二聚体-癸二酸)[P(EAD-SA)]和聚(富马酸-癸二酸)[P(FA-SA)]等。对羧苯氧基丙烷(p-CPP)与癸二酸共聚时的含量分别为重量百分比10-60%和20-90%,共混重量比是10-40∶50-90,最好是重量比15-30∶65-85。
聚乳酸的分子量峰值可为,但不限于,5000-100,000,但以20,000-60,000为优选,以5,000-30,000为最优选;聚乙醇酸的分子量可为,但不限于,5000-100,000,但以5,000-50,000为优选,以10,000-30,000为最优选;以上聚羟基酸可单选或多选。当单选时,以聚乳酸(PLA)或羟基羧酸和乙醇酸的共聚物(PLGA)为优选,共聚物的分子量可为,但不限于,5000-100,000,但以20,000-60,000为优选,以30,000-50,000为最优选;当多选时,以高分子多聚物或不同高分子多聚物组成的复合多聚物或共聚物为优选,以含不同分子量聚乳酸或癸二酸的复合多聚物或共聚物为最优选,如,但不限于,分子量为1000到30000的聚乳酸与分子量为20000到50000的聚乳酸混合、分子量为10000到30000的聚乳酸与分子量为30000到80000的PLGA混合、分子量为20000到30000的聚乳酸与癸二酸混合、分子量为30000到80000的PLGA与癸二酸混合。所用聚乳酸以左旋聚乳酸(L-PLA)为优选。左旋聚乳酸(L-PLA)粘度范围IV(dl/g)为0.2~0.8,玻璃化转变温度范围为55~65℃,熔点175~185℃。
除上述缓释辅料外,还可选用其他物质见美国专利(专利号4757128;4857311;4888176;4789724)及《药用辅料大全》(第123页,四川科学技术出版社1993年出版,罗明生和高天惠主编)中已有详细描述。另外,中国专利(申请号96115937.5;91109723.6;9710703.3;01803562.0)及美国发明专利(专利号5,651,986)也列举了某些药用辅料,包括充填剂、增溶剂、吸收促进剂、成膜剂、胶凝剂、制(或致)孔剂、赋型剂或阻滞剂等。
为调节药物释放速度或改变本发明的其它特性,可以改变聚合物的单体成分或分子量、添加或调节药用辅料的组成及配比,添加水溶性低分子化合物,如,但不限于,各种糖或盐等。其中糖可为,但不限于,木糖醇、低聚糖、(硫酸)软骨素及甲壳素等,其中盐可为,但不限于,钾盐和钠盐等;也可添加其它药用辅料,如但不限于,充填剂、增溶剂、吸收促进剂、成膜剂、胶凝剂、制(或致)孔剂、赋型剂或阻滞剂等
缓释注射剂中,药物缓释系统可制成微球、亚微球、微乳、纳米球、颗粒或球形小丸,然后与注射溶媒混合后制成注射剂使用。在各种缓释注射剂中以混悬型缓释注射剂为优选,混悬型缓释注射剂是将含抗癌成分的药物缓释系统悬浮于注射液中所得的制剂,所用的缓释辅料为上述缓释辅料中的一种或其组合,所用溶媒为普通溶媒或含助悬剂的特殊溶媒。普通溶媒为,但不限于,蒸馏水、注射用水、生理冲液、无水乙醇或各种盐配制的缓冲液。助悬剂的目的在于有效悬浮含药微球,从而利于注射之用。为方便注射,助悬剂的黏度为100cp-3000cp(20℃-30℃时),优选1000cp-3000cp(20℃-30℃时),最优选1500cp-3000cp(20℃-30℃时)。助悬剂选自羧甲基纤维素钠、(碘)甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、表面活性物质、土温20、土温40和土温80之一或其组合。
助悬剂在普通溶媒中的含量因其的特性而定,可为0.1-30%因具体情况而定。优选助悬剂的组成为:
A)0.5-5%羧甲基纤维素钠+0.1-0.5%土温80;或
B)5-20%甘露醇+0.1-0.5%土温80;或
C)0.5-5%羧甲基纤维素钠+5-20%山梨醇+0.1-0.5%土温80。
溶媒的制备则取决于溶媒的种类,普通溶媒有市售,也可以自制,如蒸馏水、注射用水、生理冲液、无水乙醇或各种盐配制的缓冲液,但必须严格按照有关标准。特殊溶媒需考虑到助悬剂的种类及其组成、溶媒所悬浮的药物、缓释微球(或微囊)的组成、性质及其需要量及注射剂的制备方法,如将羧甲基纤维素钠(1.5%)+甘露醇和/或山梨醇(15%)和/或吐温80(0.1%)溶于生理盐水中得相应的溶媒,黏度在10cp-650cp(20℃-30℃时)。
本发明发现影响药物和/或缓释微球悬浮和/或注射的关键因素是溶媒的黏度,黏度越大,悬浮效果越好,可注射性越强。这种意外发现构成了本发明的主要指数特征之一。溶媒的黏度取决于助悬剂的黏度,助悬剂的黏度为100cp-3000cp(20℃-30℃时),优选1000cp-3000cp(20℃-30℃时),最优选1500cp-3000cp(20℃-30℃时)。按照此条件所制得的溶媒的黏度为10cp-650cp(20℃-30℃时),优选20cp-650cp(20℃-30℃时),最优选60cp-650cp(20℃-30℃时)。
注射剂的制备有多种方法,一种是将助悬剂为“0”的缓释微粒(A)直接混于特殊溶媒中,得到相应的缓释微粒注射剂;另一种是将助悬剂不为“0”的缓释微粒(A)混于特殊溶媒或普通溶媒中,得到相应的缓释微粒注射剂;再一种是将缓释微粒(A)混于普通溶媒中,然后加入助悬剂混匀,得到相应的缓释微粒注射剂。除外,还可先将缓释微粒(A)混于特殊溶媒中制得相应的混悬液,然后用真空干燥等办法去除混悬液中的水分,之后再用特殊溶媒或普通溶媒混悬,得到相应的缓释微粒注射剂。以上方法只是用于说明而非限制本发明。值得注意的是,悬浮药物或缓释微球(或微囊)在注射剂中的浓度因具体需要而定,可为,但不限于,10-400mg/ml,但以30-300mg/ml为优选,以50-200mg/ml最优选。注射剂的黏度为50cp-1000cp(20℃-30℃时),优选100cp-1000cp(20℃-30℃时),最优选200cp-650cp(20℃-30℃时)。此黏度适用于18-22号注射针头和特制的内径更大的(至3毫米)注射针头。
缓释注射剂的制备方法是任意的,可用若干种方法制备:如,但不限于,混合法、熔融法、溶解法、喷雾干燥法制备微球、溶解法结合冷冻(干燥)粉碎法制成微粉、脂质体包药法及乳化法等。其中以溶解法(即溶剂挥发法)、干燥法、喷雾干燥法和乳化法为优选。微球则可用于制备上述各种缓释注射剂,其方法是任意的。所用微球的粒径范围可在5-400um之间,以10-300um之间为优选,以20-200um之间为最优选。
微球还可用于制备其他缓释注射剂,如凝胶注射剂、嵌段共聚物胶束注射剂。其中,嵌段共聚物胶束由疏水-亲水嵌段共聚物在水溶液中形成,具有球形内核-外壳结构,疏水嵌段形成内核,亲水嵌段形成外壳。载药胶束注射进入体内达到控制药物释放或靶向治疗的目的。所用药物载体为上述任意一种或其组合。其中优选分子量为1000-15000的聚乙二醇(PEG)作为胶束共聚物的亲水嵌段,优选生物降解聚合物(如PLA、聚丙交酯、聚己内酯及其共聚物(分子量1500-25000))作为胶束共聚物的疏水嵌段。嵌段共聚物胶束的粒径范围可在10-300um之间,以20-200um之间的为优选。凝胶注射剂系将生物降解聚合物(如PLA、PLGA或DL-LA和ε-己内酯共聚物)溶于某些两亲性溶媒,再加入药物与之混溶(或混悬)后形成流动性较好的凝胶,可经瘤周或瘤内注射。一旦注入,两亲性溶媒很快扩散至体液,而体液中的水分则渗入凝胶,使聚合物固化,缓慢释放药物。
缓释微球还可用于制备缓释植入剂,所用的药用辅料可为上述药用辅料中的任何一种或多种物质,但以水溶性高分子聚合物为主选,在各种高分子聚合物中,以聚乳酸、葵二酸、含聚乳酸或葵二酸的高分子多聚物的混合物或共聚物为首选,混合物和共聚物可选自,但不限于,PLA、PLGA、PLA与PLGA的混合物、葵二酸与芳香聚酐或脂肪族聚酐的混合物或共聚物、双脂肪酸与癸二酸共聚物(PFAD-SA)、聚(芥酸二聚体-癸二酸)[P(EAD-SA)]、聚(富马酸-癸二酸)[P(FA-SA)]。聚乳酸(PLA)与聚乙醇酸的的共混比例是10/90-90/10(重量),最好是25/75-75/25(重量)。共混的方法是任意的。乙醇酸和乳酸共聚时的含量分别为重量百分比10-90%和90-10%。芳香聚酐的代表物是对羧苯基丙烷(p-CPP),对羧苯基丙烷(p-CPP)与葵二酸共聚时的含量分别为重量百分比10-60%和20-90%,共混重量比是10-40∶50-90,最好是重量比15-30∶65-85。
本发明缓释植入剂中缓释辅料及其重量百分比最优选如下:
(1)55-95%的PLA;
(2)50-95%的PLGA;
(3)50-95%的聚苯丙生;
(4)55-95%的双脂肪酸与癸二酸共聚物;
(5)30-60%的聚苯丙生和30-60%的PLA或PLGA;
(6)40-95%的木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆或白蛋白胶;或
(7)40-95%的外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸或端羧基聚乳酸/乙醇酸共聚物。
本发明抗癌药物缓释剂的又一种形式是抗癌药物缓释剂为缓释植入剂。抗癌植入剂的有效成分可均匀地包装于整个药用辅料中,也可包装于载体支持物中心或其表面;可通过直接扩散和/或经多聚物降解的方式将有效成分释放。
缓释植入剂的特点在于所用的缓释辅料除高分子聚合物外,还含有上述任意一种或多种其它辅料。添加的药用辅料统称为添加剂。添加剂可根据其功能分为充填剂、致孔剂、赋型剂、分散剂、等渗剂、保存剂、阻滞剂、增溶剂、吸收促进剂、成膜剂、胶凝剂等。
缓释植入剂的主要成份可制成多种剂型。如,但不限于,胶囊、缓释剂、植入剂、缓释剂植入剂等;呈多种形状,如,但不限于,颗粒剂、丸剂、片剂、散剂、球形、块状、针状、棒状、柱状及膜状。在各种剂型中,以体内缓慢释放植入剂为优选。可为0.1-5mm(粗)×1-10mm(长)的棒状,也可为片状等其它形状。
缓释植入剂的最佳剂型为生物相容性、可降解吸收的缓释剂植入,可因不同临床需要而制成各种形状及各种剂型。其主要成份的包装方法和步骤在美国专利中(US5651986)已有详细描述,包括若干种制备缓释制剂的方法:如,但不限于,(i)把载体支持物粉末与药物混合然后压制成植入剂,即所谓的混合法;(ii)把载体支持物熔化,与待包装的药物相混合,然后固体冷却,即所谓的熔融法;(iii)把载体支持物溶解于溶剂中,把待包装的药物溶解或分散于聚合物溶液中,然后蒸发溶剂,干燥,即所谓的溶解法;(iv)喷雾干燥法;及(v)冷冻干燥法等。所用的有机溶剂为任意的,如,但不限于,氯仿、丙酮、无水乙醇、二氯甲烷等。
缓释植入剂的抗癌有效成分可参照缓释注射剂,但优选如下,均为重量百分比:
(a)0.005%-20%的雷帕霉素与2%-40%博来霉素、道诺霉素、诺加霉素、嘌呤霉素、阿柔比星、依达比星、克拉霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合;或
(b)0.005%-20%的雷帕霉素与2%-40%培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、法扎拉滨、氟达拉滨、克拉屈滨,戊糖苷、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨、阿西维辛、曲普瑞林、艾多昔芬或诺拉曲塞的组合。
缓释辅料可为各种水溶性或非水溶性高分子多聚物,在多种缓释辅料中优选聚乳酸(PLA)、聚乙醇酸和羟基乙酸的共聚物(PLGA)、乙烯乙酸乙烯酯共聚物(EVAc)、聚苯丙生、双脂肪酸与癸二酸共聚物(PFAD-SA)、聚(芥酸二聚体-癸二酸)[P(EAD-SA)]、聚(富马酸-癸二酸)[P(FA-SA)]之一或其组合。
给药途径取决于多种因素,为于原发或转移肿瘤所在部位获得有效浓度,药物可经多种途径给予,如皮下、腔内(如腹腔、胸腔及椎管内)、瘤内、瘤周注射或放置、选择性动脉注射、淋巴结内及骨髓内注射。以选择性动脉注射、腔内、瘤内、瘤周注射或放置为优选。
缓释植入剂的应用及增效方式同抗癌缓释注射剂,即局部放置的雷帕霉素与其它途径给药的增效剂的联合、局部放置的抗癌药物与其它途径给药的雷帕霉素的联合、局部放置的抗癌药物与局部放置的雷帕霉素的联合。其中局部应用的抗癌药物与雷帕霉素可单独或联合生产、包装、销售、使用。包装指药物对辅料而言的载药过程以及含药缓释剂对运输和/或储存而言的内外包装。载药过程包括,但不限于,称量、溶解、混合、干燥、成形、包衣、喷雾、制粒等。
本发明可以用于制备治疗人及动物的各种肿瘤的药物制剂,主要为缓释注射剂或缓释植入剂,所指肿瘤包括起源于大脑、中枢神经系统、肾脏、肝、胆囊、头颈部、口腔、甲状腺、皮肤、黏膜、腺体、血管、骨组织、淋巴结、肺脏、食管、胃、乳腺、胰腺、眼睛、鼻咽部、子宫、卵巢、子宫内膜、子宫颈、前列腺、膀胱、结肠、直肠的原发或转移的癌或肉瘤或癌肉瘤。
本发明所制的缓释注射剂或缓释植入剂中还可加入其它药用成分,如,但不限于,抗菌素、止疼药、抗凝药、止血药等。
通过如下试验和实施例对本发明抗实体肿瘤组合物的技术作进一步的描述:
试验一、雷帕霉素及抗癌药物的体内抑瘤作用。
以大白鼠为试验对象,将2×105个胰腺癌细胞皮下注射于其季肋部,待肿瘤生长14天后将其分为以下10组(见表1)。第一组为对照,第2到10组为治疗组,其中,第2组为雷帕霉素,第3到6组分别为阿柔比星、依达比星、阿可达佐、多柔比星。第7到10组分别为雷帕霉素与阿柔比星、依达比星、阿可达佐、多柔比星的联合。除雷帕霉素经瘤内放置外,阿柔比星、依达比星、阿可达佐、多柔比星均为腹腔给药。剂量计量除雷帕霉素为0.05mg/kg外均为2.5mg/kg。治疗后第30天测量肿瘤体积大小,比较治疗效果(见表1)。
表1
| 试验组(n) | 所受治疗 | 肿瘤体积(cm3) | P值 |
| 1(6) | 对照 | 50±8 | |
| 2(6) | 雷帕霉素 | 34±6 | <0.05 |
| 3(6) | 阿柔比星 | 44±8 | <0.05 |
| 4(6) | 依达比星 | 42±10 | <0.05 |
| 5(6) | 阿可达佐 | 36±8 | <0.01 |
| 6(6) | 多柔比星 | 38±8 | <0.01 |
| 7(6) | 雷帕霉素+阿柔比星 | 22±4 | <0.001 |
| 8(6) | 雷帕霉素+依达比星 | 28±5.6 | <0.001 |
| 9(6) | 雷帕霉素+阿可达佐 | 26±4 | <0.001 |
| 10(6) | 雷帕霉素+多柔比星 | 16±3.0 | <0.001 |
注:阿柔比星、依达比星、阿可达佐、多柔比星均为抗癌药物。结果表明,与对照组相比,雷帕霉素(第2组)及抗癌抗生素(第3到6组)单独应用均有一定的抑瘤作用(P<0.05),特别是局部给药。而联合应用(第7到10组)具有明显的增效作用(P<0.001)。
试验二、雷帕霉素及抗癌药物的体内抑瘤作用。
以大白鼠为试验对象,将2×105个乳腺癌细胞皮下注射于其季肋部,待肿瘤生长14天后将其分为以下10组(见表2)。第1组为对照,第2到10组为治疗组,其中,第2组为雷帕霉素;第3到6组为抗癌药物。第7到10组分别为雷帕霉素与抗癌药物的联合。除雷帕霉素经瘤内放置外,表柔比星、戊柔比星、吡柔比星、洛撒蒽醌均为腹腔给药。药物剂量除雷帕霉素为0.5mg/kg外均为10mg/kg。治疗后第30天测量肿瘤体积大小,比较治疗效果(见表2)。
表2
| 试验组(n) | 所受治疗 | 肿瘤体积(cm3) | P值 |
| 1(6) | 对照 | 60±12 | |
| 2(6) | 雷帕霉素 | 54±8.0 | <0.05 |
| 3(6) | 表柔比星 | 50±5.3 | <0.05 |
| 4(6) | 戊柔比星 | 50±4.6 | <0.05 |
| 5(6) | 吡柔比星 | 42±4.4 | <0.05 |
| 6(6) | 洛撒蒽醌 | 40±3.8 | <0.05 |
| 7(6) | 雷帕霉素+表柔比星 | 22±4.4 | <0.001 |
| 8(6) | 雷帕霉素+戊柔比星 | 24±3.2 | <0.001 |
| 9(6) | 雷帕霉素+吡柔比星 | 16±3.2 | <0.001 |
| 10(6) | 雷帕霉素+洛撒蒽醌 | 14±3.8 | <0.001 |
注:表柔比星、戊柔比星、吡柔比星、洛撒蒽醌均为抗癌抗生素的代表。
试验三、局部应用雷帕霉素对抗生素类抗癌药物的增效作用。
以大白鼠为试验对象,将2×105个肝癌细胞皮下注射于其季肋部,待肿瘤生长14天后将其分为以下10组(见表3)。第一组为对照,第2到10组为治疗组,其中,第2组为雷帕霉素,第3到6组分别为阿柔比星、戊柔比星、表柔比星和吡柔比星。第7到10组分别为雷帕霉素与阿柔比星、戊柔比星、表柔比星或吡柔比星的联合。所有药物均为瘤内放置,计量除雷帕霉素为2mg/kg外均为12mg/kg。治疗后第30天测量肿瘤体积大小,比较治疗效果(见表3)。
表3
| 试验组(n) | 所受治疗 | 肿瘤体积(cm3) | P值 |
| 1(6) | 对照 | 52±10 | |
| 2(6) | 雷帕霉素 | 46±12 | <0.05 |
| 3(6) | 阿柔比星 | 38±10 | <0.01 |
| 4(6) | 戊柔比星 | 38±8 | <0.01 |
| 5(6) | 表柔比星 | 32±6 | <0.01 |
| 6(6) | 吡柔比星 | 34±8 | <0.01 |
| 7(6) | 雷帕霉素+阿柔比星 | 26±4.0 | <0.001 |
| 8(6) | 雷帕霉素+戊柔比星 | 22±4.0 | <0.001 |
| 9(6) | 雷帕霉素+表柔比星 | 18±4 | <0.001 |
| 10(6) | 雷帕霉素+吡柔比星 | 20±3.8 | <0.001 |
注:阿柔比星、戊柔比星、表柔比星和吡柔比星均为抗生素类抗癌药物。结果表明,与对照组相比,雷帕霉素(第2组)及抗生素类抗癌药物(第3到6组)单独应用均有一定的抑瘤作用(P<0.05)。然而联合应用(第7到10组)具有明显的增效作用(P<0.001)。
试验四、雷帕霉素及抗生素类抗癌药物的体内抑瘤作用。
按照试验三的方法检测了雷帕霉素及抗生素类抗癌药物的体内抑瘤作用。结果表明雷帕霉素及博来霉素、道诺霉素、诺加霉素、丝裂红素、阿柔比星、依达比星、克拉霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星等抗癌抗生素单独应用对肺癌均有明显抑瘤作用(P<0.05)。而联合应用具有明显的增效作用(P<0.001)。
试验五、雷帕霉素及抗代谢类抗癌药物的体内抑瘤作用。
以大白鼠为试验对象,将2×105个脑肿瘤细胞皮下注射于其季肋部,待肿瘤生长14天后将其分为以下10组(见表4)。第1组为对照,第2到10组为治疗组,其中,第2组为雷帕霉素;第3到6组分别为抗代谢抗癌药物。第7到10组分别为雷帕霉素与不同抗代谢抗癌药物的联合。除雷帕霉素经瘤内放置外,扎西他滨、培美曲塞、鲁米曲塞和恩曲他滨均为腹腔给药。剂量计量雷帕霉素为4mg/kg外均为12mg/kg。治疗后第30天测量肿瘤体积大小,比较治疗效果(见表4)。
表4
| 试验组(n) | 所受治疗 | 肿瘤体积(cm3) | P值 |
| 1(6) | 对照 | 62±10 | |
| 2(6) | 雷帕霉素 | 58±12 | <0.05 |
| 3(6) | 扎西他滨 | 56±8.0 | <0.01 |
| 4(6) | 培美曲塞 | 52±8.2 | <0.01 |
| 5(6) | 鲁米曲塞 | 60±9.4 | <0.01 |
| 6(6) | 恩曲他滨 | 48±6.8 | <0.01 |
| 7(6) | 雷帕霉素+扎西他滨 | 34±5.2 | <0.001 |
| 8(6) | 雷帕霉素+培美曲塞 | 32±5.6 | <0.001 |
| 9(6) | 雷帕霉素+鲁米曲塞 | 26±3.0 | <0.001 |
| 10(6) | 雷帕霉素+恩曲他滨 | 18±2.8 | <0.001 |
注:扎西他滨、培美曲塞、鲁米曲塞和恩曲他滨均为抗代谢类抗癌药物。
试验六、雷帕霉素及抗代谢类抗癌药物的体内抑瘤作用。
以大白鼠为试验对象,将2×105个直肠癌细胞皮下注射于其季肋部,待肿瘤生长14天后将其分为以下10组(见表5)。第1组为对照,第2到10组为治疗组,其中,第2组为雷帕霉素,第3到6组分别为抗代谢类抗癌药物。第7到10组分别为雷帕霉素与不同抗代谢类抗癌药物的联合。除雷帕霉素经瘤内放置外,卡莫氟、替加氟、吉西他滨和雷替曲塞均为腹腔给药。除雷帕霉素为5mg/kg外均为2mg/kg。治疗后第30天测量肿瘤体积大小,比较治疗效果(见表5)。
表5
| 试验组(n) | 所受治疗 | 肿瘤体积(cm3) | P值 |
| 1(6) | 对照 | 60±12 | |
| 2(6) | 雷帕霉素 | 42±6.2 | <0.05 |
| 3(6) | 卡莫氟 | 54±6.3 | <0.01 |
| 4(6) | 替加氟 | 50±6.6 | <0.01 |
| 5(6) | 吉西他滨 | 48±6.8 | <0.01 |
| 6(6) | 雷替曲塞 | 52±5.8 | <0.01 |
| 7(6) | 雷帕霉素+卡莫氟 | 32±5.6 | <0.001 |
| 8(6) | 雷帕霉素+替加氟 | 24±4.4 | <0.001 |
| 9(6) | 雷帕霉素+吉西他滨 | 26±4.2 | <0.001 |
| 10(6) | 雷帕霉素+雷替曲塞 | 20±4.0 | <0.001 |
注:卡莫氟、替加氟、吉西他滨和雷替曲塞均为抗代谢类抗癌药物。
类似增效作用还见于雷帕霉素与其它抗代谢类抗癌药物的联合,如:雷帕霉素与培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、氟达拉滨、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨或诺拉曲塞的组合。所用的肿瘤细胞包括脑肿瘤(CNS-1、C6、9L)、胃腺上皮癌(SA)、骨肿瘤(BC)、乳腺癌(BA)、甲状腺乳头状腺癌(PAT)、肝癌、胰腺癌、肾癌及食管癌等)。
试验8、不同分子量聚乳酸制成的雷帕霉素缓释植入剂的体内释放比较
以大白鼠为试验对象,分组(3只/组)并于皮下给予含不同分子量(MW)的聚乳酸(PLA)承载的等量雷帕霉素缓释植入剂。然后分别于1、3、7、14、21、28和35天测药物于植入剂内的剩余量,进而得出其体内释放速度(%)。结果表明,分子量为20000的释放为:1天(12%)、3(28%)、7(54%)、14(84%)、21(92)、28(94)和35(96%)。比较不同分子量聚乳酸制成的雷帕霉素缓释植入剂的体内释放发现,随分子量增加而变慢,以第7天为例,与全身给药组相比,肿瘤抑制率随聚乳酸分子量增加而提高,依次为68%(MW:5000)、66%(MW:15000)、54%(MW:25000)、50%(MW:40000)和48(MW:60000)。
同样的结果还见于用聚乳酸为辅料制成的缓释剂,含雷帕霉素与抗癌药物的组合。
特别注意的是,本发明的缓释剂,特别是缓释注射剂操作简单方便、重复性好。不仅疗效好,毒副作用小。
不同的药物包装于不同的生物降解高分子所制得的缓释剂的特性不同,不同的药物和/或药物制成的缓释制剂不一定能够较满意的释放药物。本发明的进一步研究发现,最适宜于本发明的药物缓释的缓释辅料为外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸、端羧基聚乳酸/乙醇酸共聚物、聚苯丙生、双脂肪酸与癸二酸共聚物、聚(芥酸二聚体-癸二酸)、聚(富马酸-癸二酸)、聚乳酸、聚乙醇酸和羟基乙酸的共聚物、木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆、白蛋白胶之一或其组合;最适宜的助悬剂为甲基纤维素、羟甲基纤维素、羧甲基纤维素钠、(碘)甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、表面活性物质、土温20、土温40、土温80之一或其组合。
总之,实验结果表明本发明中的雷帕霉素对所列抗代谢类抗癌药物或抗生素类抗癌药物的增效作用。因此,本发明所述的抗癌复合物的有效成分为雷帕霉素和任意一种(或多种)抗代谢类抗癌药物和/或抗生素类抗癌药物的联合或单独包装。以上有效成分可制成任意剂型或形状,但以缓慢释放剂型为优选,主要为缓释注射剂或缓释植入剂。
(四)具体实施方式
实施例1.
将80份分子量峰值为10000-25000的聚乳酸(PLGA,50∶50)放入容器中,加适量二氯甲烷溶解混匀后,加入10份雷帕霉素和10份吉西他滨,重新摇匀后真空干燥去除有机溶剂。将干燥后的固体组合物立即成形,分装后射线灭菌,得含10%雷帕霉素和10%吉西他滨的抗癌缓释。均为重量百分比。该抗实体肿瘤药物组合物在体外生理盐水中的释药时间为18-24天,在小鼠皮下的释药时间为21-25天。
实施例2.
如实施例1所述,所不同的是辅料为分子量峰值为25000-45000的聚乳酸(PLGA,75∶25),抗癌有效成分及重量百分比为:0.005%-20%的雷帕霉素与2%-40%培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、法扎拉滨、氟达拉滨、克拉屈滨,戊糖苷、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨、阿西维辛、曲普瑞林、艾多昔芬或诺拉曲塞的组合。
实施例3.
将70份聚苯丙生(对羧苯基丙烷(p-CPP)∶癸二酸(SA)为20∶80)共聚物放入容器中,加适量二氯甲烷溶解混匀后,加入10份雷帕霉素和20份多柔比星,重新摇匀后用喷雾干燥法制备含10%雷帕霉素和20%多柔比星的注射用微球。然后将微球悬浮于含15%甘露醇的生理盐水中,制得相应的混悬型缓释注射剂,黏度为200cp-300cp(20℃-30℃时)。该缓释注射剂在体外生理盐水中的释药时间为20-25天,在小鼠皮下的释药时间为20-30天左右。
实施例4.
加工成缓释注射剂的方法步骤与实施例3相同,但所不同的是所用辅料为聚苯丙生为40∶60,所含抗癌有效成分及其重量百分比为:0.005%-20%的雷帕霉素与2%-40%埃坡霉素D、博来霉素、道诺霉素、诺加霉素、嘌呤霉素、阿柔比星、依达比星、克拉霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合,缓释注射剂的黏度为280cp-650cp(20℃-30℃时)。
实施例5.
将80份分子量峰值为10000-25000的聚乳酸(PLA)放入容器中,加100毫升二氯甲烷,溶解混匀后,加入5份戊柔比星和15份雷帕霉素,重新摇匀后真空干燥去除有机溶剂。将干燥后的含药固体组合物冷冻粉碎制成含5%戊柔比星和15%雷帕霉素的微粉,然后悬浮于含1.5%羧甲基纤维素钠的生理盐水中,制得相应的混悬型缓释注射剂,黏度为220cp-340cp(20℃-30℃时)。该缓释注射剂在体外生理盐水中的释药时间为20-25天,在小鼠皮下的释药时间为20-30天左右。
实施例6
加工成缓释注射剂的方法步骤与实施例5相同,但所不同的是辅料为分子量峰值为35000-50000的聚乳酸(PLA),所含抗癌有效成分及其重量百分比为:0.1-5%的雷帕霉素与10%的博来霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合;注射剂的黏度为400cp-650cp(20℃-30℃时)。
实施例7.
将30份分子量峰值为25000-40000的PLA和40份聚苯丙生(20∶80)放入容器中,加适量二氯甲烷溶解混匀后,加入20份雷帕霉素和10mg卡培他滨,重新摇匀后用喷雾干燥法制备含20%雷帕霉素与10%卡培他滨的注射用微球。然后将微球悬浮于含1.5%羧甲基纤维素钠和0.5%吐温80的生理盐水中,制得相应的混悬型缓释注射剂,黏度为180cp-260cp(25℃-30℃时)。该缓释注射剂在体外生理盐水中的释药时间为26-35天,在小鼠皮下的释药时间为28-34天左右。
实施例8.
加工成缓释注射剂的方法步骤与实施例7相同,但所不同的是所用辅料为分子量峰值为15000-20000的PLA和份聚苯丙生(30∶70),含抗癌有效成分为:1-10%的雷帕霉素与5-30%的培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、氟达拉滨、雷替曲占、雷替曲塞、右雷佐生或克拉屈滨的组合;黏度为400cp-560cp(25℃-30℃时)。
实施例9
将30份分子量峰值为25000-40000的PLGA(50∶50)和40份聚苯丙生(30∶70)放入容器中,加100毫升二氯甲烷,溶解混匀后,加入20份吡柔比星和10份雷帕霉素,重新摇匀后用喷雾干燥法制备含20%吡柔比星和10%雷帕霉素的注射用微球。然后将微球悬浮于含1.5%羧甲基纤维素钠和15%山梨醇和0.2%吐温80的生理盐水中,制得相应的混悬型缓释注射剂,黏度为100cp-160cp(25℃-30℃时)。该缓释注射剂在体外生理盐水中的释药时间为20-25天,在小鼠皮下的释药时间为20-30天左右。
实施例10
加工成缓释注射剂的方法步骤与实施例9相同,但所不同的是所用辅料为分子量峰值为15000-20000的PLGA(75∶25)和聚苯丙生(40∶60)聚苯丙生为20∶80),所含抗癌有效成分为:0.5-5%的雷帕霉素与5-25%的阿柔比星、依达比星、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合;黏度为560cp-640cp(25℃-30℃时)。
实施例11
将70mg PFAD-SA放入容器中,加100毫升二氯甲烷,溶解混匀后,加入29mg米托蒽醌和1mg雷帕霉素,重新摇匀后用喷雾干燥法制备含29%米托蒽醌和1%雷帕霉素的注射用微球。然后将微球经压片法制得相应的缓释植入剂。该缓释植入剂在体外生理盐水中的释药时间为20-25天,在小鼠皮下的释药时间为30-35天左右。
实施例12
加工成缓释植入剂的方法步骤与实施例11相同,但所不同的是所用缓释辅料为:80%聚(芥酸二聚体-癸二酸)[P(EAD-SA)]或聚(富马酸-癸二酸)[P(FA-SA)];所含抗癌有效成分为:2%雷帕霉素与18%培美曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、氟达拉滨、雷替曲占、雷替曲塞、右雷佐生或克拉屈滨。
实施例13
将70mg分子量峰值为35000的聚乳酸(PLGA,50∶50)放入容器中,加100毫升二氯甲烷,溶解混匀后,加入25mg戊柔比星和5mg雷帕霉素,重新摇匀后用喷雾干燥法制备含25%戊柔比星和5%雷帕霉素的注射用微球。然后将微球经压片法制得相应的缓释植入剂。该缓释植入剂在体外生理盐水中的释药时间为30-35天,在小鼠皮下的释药时间为35-50天左右。
实施例14
加工成缓释植入剂的方法步骤与实施例11-13相同,但所不同的是所用辅料为分子量峰值为25000-45000的聚乳酸(PLGA,75∶25),所含抗癌有效成分及重量百分比为:1-5%雷帕霉素与5-20%培美曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、氟达拉滨、雷替曲占、雷替曲塞、右雷佐生或克拉屈滨。
实施例15
加工成缓释剂的方法步骤与实施例1-14相同,但所不同的是所用的缓释辅料为下列之一或其组合:
a)聚乳酸(PLA),分子量峰值为10000-30000、300000-60000、60000-100000或100000-150000;
b)聚乙醇酸和羟基乙酸的共聚物(PLGA),其中,聚乙醇酸和羟基乙酸的比例为50-95∶50-50,分子量峰值为10000-30000、300000-60000、60000-100000或100000-150000;
c)聚苯丙生和PLA或PLGA;
d)聚苯丙生,对羧苯基丙烷(p-CPP)∶癸二酸(SA)为10∶90、20∶80、30∶70、40∶60、50∶50或60∶40;
e)双脂肪酸与癸二酸共聚物(PFAD-SA);
f)聚(芥酸二聚体-癸二酸)[P(EAD-SA)];
g)聚(富马酸-癸二酸)[P(FA-SA)];
h)木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆或白蛋胶;
i)外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸或端羧基聚乳酸/乙醇酸共聚物。
实施例16
加工成缓释注射剂的方法步骤与实施例1-10相同,但所不同的是所用助悬剂分别为下列之一或其组合:
a)0.5-3.0%羧甲基纤维素(钠);
b)5-15%甘露醇;
c)5-15%山梨醇;
d)0.1-1.5%表面活性物质;
e)0.1-0.5%吐温20。
上述实施例对本发明的技术方法作了进一步的描述。是为了举例说明而不是要限定本发明的范围。实际上,除本文所示和所述之外的本发明的各种改变,对于本领域熟练技术人员来说都可从说明书和图表中显而易见。当然这些改变应在所附的权利要求的范围内。因此,应该认识到前面的说明书着重公开了本发明的某些特定实施方式及对其所做的等同改变或替换都是在所附权利要求书所述的构思和范围内。
本发明所公开和保护的内容见权利要求。
Claims (10)
1.一种含雷帕霉素的抗癌组合物,其特征在于该组合物中的抗癌有效成分为雷帕霉素与抗肿瘤抗生素和/或抗代谢类药物的组合。
2.根据权利要求1所述之抗癌组合物,其特征在于抗癌组合物的抗癌有效成分用于制备抗癌缓释剂,选自缓释注射剂或缓释植入剂。
3.根据权利要求2所述之缓释注射剂,由以下成分组成:
(A)缓释微球,包括:
抗癌有效成分 0.05-60%
缓释辅料 41-99.9%
助悬剂 0.0-30%
以上为重量百分比
和
(B)溶媒,为普通溶媒或含助悬剂的特殊溶媒。
其中,
抗癌有效成分为雷帕霉素与选自抗肿瘤抗生素和/或抗代谢类药物的抗癌药物的组合,雷帕霉素与抗癌药物的重量比为1-99∶1到1∶1-99;
助悬剂选自羧甲基纤维素钠、碘甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、表面活性物质、土温20、土温40和土温80之一或其组合,助悬剂的黏度为100cp-3000cp(20℃-30℃时)。
4.根据权利要求2所述之缓释注射剂,其特征在于所用的助悬剂选自下列之一或其组合:
a)0.5-3.0%羧甲基纤维素(钠);
b)5-15%甘露醇;
c)5-15%山梨醇;
d)0.1-1.5%表面活性物质;
e)0.1-0.5%吐温20;
f)(碘)甘油、二甲硅油、丙二醇或卡波姆;
g)0.5-5%羧甲基纤维素钠+0.1-0.5%土温80;
h)5-20%甘露醇+0.1-0.5%土温80;或
i)0.5-5%羧甲基纤维素钠+5-20%山梨醇+0.1-0.5%土温80。
5.根据权利要求3所述之抗癌缓释植入剂,其特征在于抗癌缓释植入剂由抗癌有效成分和缓释辅料组成。
6.根据权利要求1所述之抗癌组合物,其特征在于:
所述抗肿瘤抗生素类药物选自博来霉素、道诺霉素、二乙氧醋酰阿霉素、诺卡菌素、诺卡菌红素、诺卡型霉素、诺加霉素、丝裂红素、多粘菌素E、吡利霉素、地红霉素、安曲霉素、培洛霉素、嘌罗霉素、司帕霉素、埃坡霉素D、蒽霉素、卡米诺霉素、嘌呤霉素、阿柔比星、阿克拉霉素-B、依达比星、蛇形菌素、克拉霉素、盐酸阿可达佐、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星;
所述抗代谢类抗癌药物选自培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、氟达拉滨、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨或诺拉曲塞。
7.根据权利要求2所述之抗癌缓释剂,其特征在于所述所用的缓释辅料选自下列之一或其组合:
a)聚乳酸;
b)聚乙醇酸和羟基乙酸的共聚物;
c)聚苯丙生;
d)聚苯丙生和PLA或PLGA;
e)双脂肪酸与癸二酸共聚物;
f)聚(芥酸二聚体-癸二酸)共聚物;
g)聚(富马酸-癸二酸)共聚物;
h)木糖醇、低聚糖、软骨素、甲壳素、透明质酸、胶原蛋白、明胶、壳聚糖、泊洛沙姆或白蛋胶;
i)外消旋聚乳酸、外消旋聚乳酸/乙醇酸共聚物、单甲基聚乙二醇/聚乳酸、单甲基聚乙二醇/聚乳酸共聚物、聚乙二醇/聚乳酸、聚乙二醇/聚乳酸共聚物、端羧基聚乳酸或端羧基聚乳酸/乙醇酸共聚物。
8.根据权利要求7所述之抗癌缓释剂,其特征在于:
a)聚乳酸的分子量峰值为10000-30000、300000-60000、60000-100000或100000-150000;
b)聚乙醇酸和羟基乙酸的共聚物中,聚乙醇酸和羟基乙酸的比例为50-95∶50-50,分子量峰值为10000-30000、300000-60000、60000-100000或100000-150000;
c)聚苯丙生中,对羧苯基丙烷:癸二酸为10∶90、20∶80、30∶70、40∶60、50∶50或60∶40。
9.根据权利要求1所述之抗癌组合物,其特征在于所述抗癌有效成分及其重量百分比为:
(a)0.005%-20%的雷帕霉素与2%-40%埃坡霉素D、博来霉素、道诺霉素、诺加霉素、嘌呤霉素、阿柔比星、依达比星、克拉霉素、阿可达佐、多柔比星、表柔比星、戊柔比星、吡柔比星、洛撒蒽醌、洛索蒽醌、米托蒽醌、吡罗蒽醌、替洛蒽醌或氯佐星的组合;或
(b)0.005%-20%的雷帕霉素与2%-40%培美曲塞、培美曲塞二钠、鲁米曲塞、卡莫氟、替加氟、替莫唑胺、扎西他滨、恩曲他滨、加洛他滨、伊巴他滨、安西他滨、地西他滨、氟西他滨、依诺他滨、咪唑他滨、卡培他滨、吉西他滨、法扎拉滨、氟达拉滨、克拉屈滨,戊糖苷、雷替曲占、雷替曲塞、右雷佐生、克拉屈滨、阿西维辛、曲普瑞林、艾多昔芬或诺拉曲塞的组合。
10.根据权利要求1所述之抗癌组合,其特征在于抗癌有效成分用于制备治疗起源于人及动物大脑、中枢神经系统、肾脏、肝、胆囊、头颈部、口腔、甲状腺、皮肤、粘膜、腺体、血管、骨组织、淋巴结、肺脏、食管、胃、乳腺、胰腺、眼睛、鼻咽部、子宫、卵巢、子宫内膜、子宫颈、前列腺、膀胱、结肠或直肠的原发或继发的癌、肉瘤或癌肉瘤的药物制剂。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910868A (zh) * | 2012-12-31 | 2014-07-09 | 张雅珍 | 含有多柔比星结构的非线性聚合物以及制备方法和用途 |
| CN106138045A (zh) * | 2015-04-16 | 2016-11-23 | 中国科学院上海生命科学研究院 | 通过靶向mTOR操纵肿瘤微环境以消除肿瘤耐药性的方法及制剂 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910868A (zh) * | 2012-12-31 | 2014-07-09 | 张雅珍 | 含有多柔比星结构的非线性聚合物以及制备方法和用途 |
| CN103910868B (zh) * | 2012-12-31 | 2018-03-02 | 张雅珍 | 含有多柔比星结构的非线性聚合物以及制备方法和用途 |
| CN106138045A (zh) * | 2015-04-16 | 2016-11-23 | 中国科学院上海生命科学研究院 | 通过靶向mTOR操纵肿瘤微环境以消除肿瘤耐药性的方法及制剂 |
| CN106138045B (zh) * | 2015-04-16 | 2019-06-21 | 中国科学院上海生命科学研究院 | 通过靶向mTOR操纵肿瘤微环境以消除肿瘤耐药性的方法及制剂 |
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