TW202302115A - 具有降低副作用的藥學組成物及其使用方法 - Google Patents
具有降低副作用的藥學組成物及其使用方法 Download PDFInfo
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- TW202302115A TW202302115A TW111107997A TW111107997A TW202302115A TW 202302115 A TW202302115 A TW 202302115A TW 111107997 A TW111107997 A TW 111107997A TW 111107997 A TW111107997 A TW 111107997A TW 202302115 A TW202302115 A TW 202302115A
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Abstract
提供一種將活性劑遞送至眼睛的藥學組成物。該藥學組成物可包含一種脂質混合物、一種活性劑及一種生物相容水凝膠。該藥學組成物可達到延長治療及降低的副作用的效果。同時提供一種方法,將包含於該藥學組成物的活性劑遞送至有需求之個體的眼睛。
Description
本揭露內容涉及將活性劑遞送至眼睛的藥物傳遞系統。本揭露內容同時也涉及能降低眼部副作用型態的藥學組成物及其使用於眼科領域的方法。
眼部疾病的常規藥物治療通常以投予溶液或懸浮液等方式達成,而這些劑型的侷限包含了藥物被快速清除以及不良的局部毒性。
作為藥物遞送載體的含脂質顆粒改變了藥物的藥物動力學分佈型態,是由於微脂體通常能使藥物達到緩釋、延長停留時間,以及提高投藥劑量以達到減少投藥頻率的效果。多篇文獻皆曾指出,微脂體組成物能夠增加藥物在眼睛中的停留時間以及延長藥物的功效(U.S. Patent No. 4,804,539, U.S. Patent No. 8,956,600, and M. Abrishami et al., Retina. 2009 May;29(5):699-703)。
然而,投予含有高藥物包覆率的大顆單層囊泡(large-unilamellar vesicles)之組成物至玻璃體後,特別是透過玻璃體內注射(intravitreal injection),病人常感受到視力模糊,此現象係和脂質奈米顆粒造成的玻璃體白化(vitreous clouding)相關。研究發現,經由玻璃體內注射包覆於微脂體的更昔洛韋(ganciclovir)之病人,在起初有視力減退的情形,係由於玻璃體白化所致,且經注射後的包覆於微脂體的更昔洛韋呈現白色懸浮狀並停留於玻璃體的下方(S K Akula et al., Br J Ophthalmol. 1994 Sep; 78(9): 677–680)。
因此,將活性劑遞送到眼睛的藥學組成物仍存在著未被滿足的需求,即能同時滿足延長治療功效及降低如玻璃體混濁(vitreous haze)的副作用。本揭露內容解決了此需求以及其他需求。
本揭露內容提供了一種用於遞送活性劑至眼睛的藥學組成物,該藥學組成物可包含:一種包含一種或多種脂質(例如磷脂質)的脂質混合物;一種達有效劑量的活性劑或其藥學上可接受之鹽類;及一種生物相容水凝膠;從而相較於未含生物相容水凝膠其餘成份皆相同的藥學組成物(例如藥學組成物對照組),所述藥學組成物能減少遞送活性劑所造成的眼部副作用。
為改善眼科疾病治療及達到理想的投藥及藥物釋放型態,本揭露提供一種用於遞送活性劑至眼睛的藥學組成物。該藥學組成物可包含一種微脂體劑型的活性劑和生物相容水凝膠的混合物,藉此達成期望的藥物動力學及降低的副作用以提高眼部疾病的治療成效。
本揭露內容中的一項生物相容水凝膠範例包含了至少一種多醣(polysaccharides),例如一種無支鏈黏多醣(unbranched mucopolysaccharide),包含但不限於一種陰離子、未硫酸化的醣胺聚醣(glycosaminoglycan),如玻尿酸(hyaluronic acid, HA)。其餘可使用的多醣種類包含藻酸鹽(alginate)、洋菜糖(agarose)、幾丁聚醣(chitosan)、膠原蛋白(collagen)、硫酸軟骨素(chondroitin sulfate)、明膠(gelatin)、纖維素硫酸鈉(sodium cellulose sulfate),或其混合物。在部分具體例中,根據本揭露內容,該生物相容水凝膠於該藥學組成物的濃度介於大約0.01%至大約0.75%的重量-體積百分比(w/v%)。在部分具體例中,根據本揭露內容,該藥學組成物所包含的一種或多種脂質(例如磷脂質),其含量介於每毫升約2至約200微莫耳(μmol)。根據本揭露內容,該藥學組成物具有適當的黏度,使得脂質奈米顆粒不會在玻璃體內快速地散開,因此投予該藥學組成物後初始形成的玻璃體白化或混濁現象得以減緩。該藥學組成物亦保留了可投藥性,例如可注射性。此外,本揭露的藥學組成物甚至在脂質奈米顆粒完全散佈於玻璃體後也展現了降低濁度(turbidity)的效果,進而有效地改善單獨投予微脂體後造成的玻璃體混濁。
同時,根據本揭露內容,該藥學組成物相對於未含生物相容水凝膠其餘成份皆相同的藥學組成物,展現了相當的活性劑緩釋功能。微脂體的包覆會改變活性劑在體內的藥物動力學是眾所周知的,這也是在發展微脂體藥物時安全性上的主要問題。本揭露所提供的藥學組成物相對於未含生物相容水凝膠其餘成份皆相同的藥學組成物,展現了相似的藥物緩釋型態,並維持了理想且延長的藥物功效,同時沒有不確定性的安全疑慮。
鑑於上述的種種優點,本揭露所提供的藥學組成物能改善病人的病症以及用藥順從性。
在部分具體例中,根據本揭露內容,該藥學組成物之製備包含了以下過程:提供一種含有脂質混合物及活性劑的懸浮溶液;將該懸浮液與一種包含生物相容水凝膠的溶液混合,從而形成一種含有多層囊泡(multilamellar vesicles)及生物相容水凝膠的混合物。
本揭露內容也提供了一種將活性劑遞送至有需求個體眼睛的方法,包含投予一種根據本揭露內容的藥學組成物至該個體的眼睛。在一特定的具體例中,將一種根據本揭露內容的藥學組成物投藥至有需求的個體眼睛的步驟,包含將該藥物組成物玻璃體內投予至該個體眼睛的玻璃體。與常規的長效釋放活性劑組成物相比,上述投予根據本揭露內容的藥學組成物之方法,可同時達到延長藥物功效及降低玻璃體內的濁度。
本揭露內容也提供了一種用於治療眼睛疾病的藥學組成物。特別是,本揭露內容提供了該藥學組成物用於製備治療眼睛疾病藥劑的用途,藉由根據本揭露內容的藥學組成物來遞送活性劑能進一步改善,亦即降低眼部的副作用。
本揭露內容的其他目的、優點和新穎特徵,將藉由以下詳細描述及附圖作明顯的呈現。
定義
除非另外有所指明,如同上文及整篇揭露內容中所使用的,下列術語應被理解為具有以下含義。
除非上下文另有明確說明,本文所使用之單數型式「一(a)」、 「一(an)」以及「該(The)」包含複數的指稱(reference)。
除非另有說明,本文中所使用的數字皆可理解為由「約」修飾,當提及諸如數量、持續時間及此類可測量值時,意指包括指定值之±10%、較佳為±5%、更佳為±1%、及甚至更佳為±0.1%之偏差,因該數值偏差適用於所欲表達的微脂體組成物。
本文所用術語「治療(treating、treated或treatment)」包含但不限於預防的(preventative),例如預防性(prophylactic)、舒緩性(palliative)及/或治癒性(curative)的用途或結果。
本文所用之「有效劑量(effective amount)」表示足以減少、預防或消除疾病(disease)、症候群(syndrome)、病症(disorder)或狀態(condition)等的症狀(symptom)或跡象(sign)的藥學組成物劑量。
本揭露內容所提及之活性劑之「藥學上可接受之鹽類(pharmaceutically acceptable salts)」為:一酸性活性劑與鹼所形成的鹽類,亦即鹼加成鹽(base addition salts),如鹼金屬和鹼土金屬鹽(alkali and alkaline earth metal salts),諸如鈉鹽、鋰鹽、鉀鹽、鈣鹽、鎂鹽,以及銨鹽(ammonium salts),諸如銨鹽(ammonium)、三甲基銨鹽(trimethyl-ammonium salts)、二乙基銨鹽(diethylammonium salts)和三-(羥甲基)-甲基銨鹽(tris-((hydroxymethyl))-methyl-ammonium salts)。類似地,酸加成鹽(acid addition salts),可能是將諸如無機酸(mineral acids)、有機羧酸(organic carboxylic acids)和有機磺酸(organic sulfonic acids),例如氫氯酸(hydrochloric acid)、甲磺酸(methanesulfonic acid)、馬來酸(maleic acid),提供予鹼性活性劑。
本文之「個體(subject)」包含了因眼睛疾病影響視力功能的脊椎動物。在一些具體例中,該個體為溫血動物,例如包括人類的哺乳類動物。
在部分具體例中,微脂體或微脂體組成物中磷脂質的含量或濃度,可由磷分析法(phosphorus assay)(改編自G. Rouser et al., Lipids 1970, 5, 494-496)檢測微脂體或微脂體藥物樣品中的磷含量來測定。
本文所使用之「%(w/v)」單位,意指重量對體積之百分比,其定義為:每100毫升溶液中所含的溶質質量(以公克表示)。
本文所使用之「眼部副作用(ocular side effect)」,意指活性劑引發的副作用,包括但不限於:眼壓升高、青光眼、白內障形成、傷口癒合延緩、增加感染風險、玻璃體混濁及視力問題。本文所使用之「玻璃體混濁(vitreous haze)」意指玻璃體內出現瀰漫性混濁(diffused turbidity)或乳白狀(milkiness),該情況可能造成視力問題。玻璃體的眼科檢查可利用直接或間接的眼底鏡(ophthalmoscope)通過任意指標(arbitrary index)去測定玻璃體的不透光度(opacification)。檢查時,盡可能查看整個眼底(fundus),包括視網膜(retina)、黃斑(macula)、中央凹(fovea)、血管(vessels)和視神經盤(optic disk)及其邊緣,以查看整個眼底(亦即檢查周邊視網膜是否剝離)。
本文所使用的「濁度(turbidity)」意為懸浮顆粒造成的白化(cloudiness)或混濁(haziness)現象。該濁度可使用,但不限於,分光光度計(spectrophotometer)量測。
脂質混合物
本文提及的藥學組成物中的脂質混合物包含了至少一種脂質,例如,但不限於,一種磷脂質或一種磷脂質混合物。在被添加至該藥學組成物之前,在被添加至該藥學組成物前,該脂質混合物包括但不限於:薄膜、餅塊(cake)、顆粒(granules)、粉末或溶液之型態。
在一具體例中,該磷脂質或磷脂質混合物,不論是否包含膽固醇,在進一步加工成脂質混合物前,已預先製備於微脂體中。
在另一具體例中,該磷脂質或磷脂質混合物,不論是否包含膽固醇,在進一步加工成脂質混合物前,未預先製備於微脂體中。
根據本揭露內容,該脂質混合物可由數種可形成或被併入一種單層或雙層結構的脂質來製備。本揭露內容所使用之脂質包括了一種或多種的磷脂質,該磷脂質包含,但不限於:磷脂醯膽鹼(phosphatidylcholine,PC)、磷脂醯甘油(phosphatidylglycerol,PG)、磷脂醯乙醇胺(phosphatidylethanolamine,PE)、磷脂醯絲胺酸(phosphatidylserine,PS)、磷脂酸(phosphatidic acid, PA)、磷脂醯肌醇(phosphatidylinositol,PI)或其組合。
在部分具體例中,該脂質混合物包含卵磷脂醯膽鹼(egg phosphatidylcholine,EPC)、卵磷脂醯甘油(egg phosphatidylglycerol,EPG)、卵磷脂醯乙醇胺(egg phosphatidylethanolamine,EPE)、卵磷脂醯絲胺酸(egg phosphatidylserine,EPS)、卵磷脂酸(egg phosphatidic acid,EPA)、卵磷脂醯肌醇(egg phosphatidylinositol,EPI)、大豆磷脂醯膽鹼(soy phosphatidylcholine,SPC)、大豆磷脂醯甘油(soy phosphatidylglycerol,SPG)、大豆磷脂醯乙醇胺(soy phosphatidylethanolamine,SPE)、大豆磷脂醯絲胺酸(soy phosphatidylserine,SPS)、大豆磷脂酸(soy phosphatidic acid,SPA)、大豆磷脂醯肌醇(soy phosphatidylinositol,SPI)或其組合。在其他具體例中,該脂質混合物包含二棕櫚醯磷脂醯膽鹼(dipalmitoylphosphatidylcholine,DPPC)、1,2-二油醯基-sn-丙三醇-3-磷脂醯膽鹼(1,2-dioleoyl-sn-glycero-3- phosphatidylcholine,DOPC)、二肉豆蔻醯基磷脂醯膽鹼(dimyristoylphosphatidylcholine,DMPC)、二棕櫚醯基磷脂醯甘油(dipalmitoylphosphatidylglycerol,DPPG)、二油醯基磷脂醯甘油(dioleoylphosphatidylglycerol,DOPG)、二肉豆蔻醯基磷脂醯甘油(dimyristoylphosphatidylglycerol,DMPG)、十六烷基磷酸膽鹼(hexadecylphosphocholine,HEPC)、氫化大豆磷脂醯膽鹼(hydrogenated soy phosphatidylcholine,HSPC)、二硬脂醯基磷脂醯膽鹼(distearoylphosphatidylcholine,DSPC)、二硬脂醯基磷脂醯甘油(distearoylphosphatidylglycerol,DSPG)、二油醯基磷脂醯乙醇胺(dioleoylphosphatidylethanolamine,DOPE)、棕櫚醯基硬脂醯基磷脂醯膽鹼(palmitoylstearoylphosphatidylcholine,PSPC)、棕櫚醯基硬脂醯基磷脂醯甘油(palmitoylstearoylphosphatidylglycerol,PSPG)、單油醯基磷脂醯乙醇胺(monooleoylphosphatidylethanolamine,MOPE)、1-棕櫚醯基-2-油醯基-sn-丙三醇-3-磷脂醯膽鹼(1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylcholine,POPC)、聚乙二醇-二硬脂醯基磷脂醯乙醇胺(polyethyleneglycol distearoylphosphatidylethanolamine,PEG-DSPE)、二棕櫚醯基磷脂醯絲胺酸(dipalmitoylphosphatidylserine,DPPS)、1,2-二油醯基-sn-丙三醇-3-磷脂醯絲胺酸(1,2-dioleoyl-sn-glycero-3-phosphatidylserine,DOPS)、二肉豆蔻醯基磷脂醯絲胺酸(dimyristoylphosphatidylserine,DMPS)、二硬脂醯基磷脂醯絲胺酸(distearoylphosphatidylserine,DSPS)、二棕櫚醯基磷脂酸(dipalmitoylphosphatidic acid,DPPA)、1,2-二油醯基-sn-丙三醇-3-磷脂酸(1,2-dioleoyl-sn-glycero-3-phosphatidic acid,DOPA)、二肉豆蔻醯基磷脂酸(dimyristoylphosphatidic acid,DMPA)、二硬脂醯基磷脂酸(distearoylphosphatidic acid,DSPA)、二棕櫚醯基磷脂醯肌醇(dipalmitoylphosphatidylinositol,DPPI)、1,2-二油醯基-sn-丙三醇-3-磷脂醯肌醇(1,2-dioleoyl-sn-glycero-3- phosphatidylinositol,DOPI)、二肉豆蔻醯基磷脂醯肌醇(dimyristoylphosphatidylinositol,DMPI)、二硬脂醯基磷脂醯肌醇(distearoylphosphatidylinositol,DSPI)或其組合。
在部分具體例中,該脂質混合物包含了一種第一磷脂質以及一種第二磷脂質。在一些具體例中,該第一磷脂質是選自由EPC、EPE、SPC、SPE、DPPC、DOPC、DMPC、HEPC、HSPC、DSPC、DOPE、PSPC、MOPE、POPC所組成的群組;以及該第二磷脂質是選自由PG、PS、PA、PI、EPG、EPS、EPA、EPI、SPG、SPE、SPS、SPA、SPI、DPPG、DOPG、DMPG、DSPG、PSPG、DPPS、DOPS、DMPS、DSPS、DPPA、DOPA、DMPA、DSPA、DPPI、DOPI、DMPI、DSPI、和一帶有連接磷脂質分子的高度水合撓性中性聚合物(flexible neutral polymer)之親水聚合物(hydrophilic polymer)所組成的群組。該親水聚合物的實例包含,但不限於:分子量大約2000到大約5000道耳頓(daltons)的聚乙二醇(polyethylene glycol,PEG)、甲氧基聚乙二醇(methoxy PEG,mPEG)、神經節苷脂GM1(ganglioside GM1)、聚唾液酸(polysialic acid)、聚乳酸(polylactic acid)[亦稱為聚丙交酯(polylactide)]、聚乙醇酸(polyglycolic acid)[亦稱為聚甘胺酸交酯(polyglycolide)]、聚乳酸聚乙醇酸(polylacticpolyglycolic acid)、聚乙烯醇(polyvinyl alcohol)、聚乙烯吡咯烷酮(polyvinylpyrrolidone)、聚甲噁唑啉(polymethoxazoline)、聚乙基噁唑啉(polyethyloxazoline)、聚羥乙基噁唑啉(polyhydroxyethyloxazoline)、聚羥丙基噁唑啉(polyhydroxypropyloxazoline)、聚天冬醯胺(polyaspartamide)、聚羥丙基甲基丙烯醯胺(polyhydroxypropyl methacrylamide)、聚甲基丙烯醯胺(polymethacrylamide)、聚二甲基丙烯醯胺(polydimethylacrylamide)、聚乙烯甲基醚(polyvinylmethylether)、聚丙烯酸羥乙酯(polyhydroxyethyl acrylate)、經衍生的纖維素(derivatized celluloses)[諸如羥甲基纖維素(hydroxymethylcellulose)或羥乙基纖維素(hydroxyethylcellulose)]和合成聚合物等。
在特定一具體例中,該脂質混合物進一步包含了一種固醇(sterol)。本揭露內容所使用的固醇並無特定限制,其實例包含膽固醇(cholesterol)、植物固醇(phytosterol)[諸如穀固醇(sitosterol)、豆固醇(stigmasterol)、海藻固醇(fucosterol)、菠菜固醇(spinasterol)、菜籽固醇(brassicasterol)及其類似物]、麥角固醇(ergosterol)、膽甾烷酮(cholestanone)、膽甾烯酮(cholestenone)、氯前列烯醇(coprostenol)、膽固醇基-2'-羥乙基醚(cholesteryl-2’-hydroxyethyl ether)和膽固醇基-4'-羥丁基醚(cholesteryl-4’-hydroxybutyl ether)。當脂質混合物裡存在固醇成分時,所使用的固醇成分可以是該領域中脂質顆粒製備時所慣用的那些固醇。
在一進一步特定具體例中,該脂質混合物進一步包含了一種膽固醇。在一些具體例中,該脂質混合物包含了約10至約33莫耳百分比的膽固醇、約15至約30莫耳百分比的膽固醇、約18至約28莫耳百分比的膽固醇、或約20至約25莫耳百分比的膽固醇。
在一特定具體例中,該脂質混合物包含了莫耳百分比分別為29.5%至90%:3%至37.5%:10%至33%的第一磷脂質、第二磷脂質及固醇。
在一特定具體例中,該第一磷脂質為DOPC、POPC、SPC或EPC,以及該第二磷脂質為PEG-DSPE或DOPG。
在一進一步特定具體例中,該脂質混合物包含了DOPC及DOPG。
在一具體例中,該脂質混合物實質上不含脂肪酸或陽離子脂質(cationic lipid)(亦即,在生理pH下帶有淨正電荷之脂質)。
在一具體例中,該脂質混合物視情況可包含一帶抗體或胜肽(peptide)的脂質結合物(lipid-conjugate),該脂質結合物作用為標靶部分(targeting moiety),能使微脂體專一性地結合至帶有標靶分子(target molecule)之目標細胞上。標靶分子的實例包含,但不限於:腫瘤壞死因子-α (TNF-α)和B細胞表面抗原(B cell surface antigent),如CD20。其他抗原諸如CD19、HER-3、GD2、Gp75、CS1蛋白、間皮素(mesothelin)、c-Myc、CD22、CD4、CD44、CD45、CD28、CD3、CD123、CD138、CD52、CD56、CD74、CD30、Gp75、CD38、CD33、GD2、血管內皮生長因子(vascular endothelial growth factor,VEGF),或轉型生長因子(transforming growth factor,TGF)也可被使用。
含脂質顆粒
本揭露內容所使用的「含脂質顆粒(lipid-containing particle)」或「脂質奈米顆粒(lipid nanoparticle, LNP)」包含但不限於:一群體顆粒包含了脂質及外加其他生物相容賦形劑以形成用於遞送活性劑的載體,並用於遞送活性劑。各式各樣的含脂質奈米顆粒已被展示出,諸如微脂體、微胞(micelles)或其他含脂質奈米顆粒。製備脂質奈米顆粒劑型的方法可影響及/或主宰部分成分於脂質奈米顆粒內的分佈,而該分佈可影響/或主宰所期望之脂質奈米顆粒的物理(如安定性)及/或生物(如功效、細胞內遞送、免疫原性)的特性。
本文使用之術語「脂質奈米顆粒」,包含但不限於:一包含一種或多種脂質的遞送載體,被調劑成平均大小或直徑為奈米至微米的顆粒型態,用於遞送一種或多種活性劑至有需求的個體。適當的脂質範例包含陽離子脂質(cationic lipids)、非陽離子脂質(non-cationic lipids)及聚乙二醇修飾的脂質(PEG-modified lipids)。
在一組具體例中,根據本揭露內容,該脂質奈米顆粒為微脂體。根據本揭露內容,該微脂體包含但不限於:一雙層脂質圍繞著內部為一水溶液藥劑攜帶成分(agent-carrying component)。微脂體的非限制實例包含了:小單層囊泡(small unilamellar vesicles, SUV)、大單層囊泡(large unilamellar vesicles, LUV)、多囊微脂體(multivesicular liposome, MVL)以及多層囊泡(multi-lamellar vesicles, MLV)。
本揭露內容中微脂體的製備可藉由製備囊泡習知的技術來生成。這些技術包括:醚注射法(ether injection method)(Deamer et al., Acad. Sci. (1978) 308: 250)、介面活性劑法(surfactant method)(Brunner et al., Biochim. Biophys. Acta (1976) 455: 322)、冷凍-解凍法(freeze-thaw method)(Pick et al., Arch. Biochim. Biophys. (1981) 212: 186)、反相蒸發法(reverse-phase evaporation method)(Szoka et al., Biochim. Biophys. Acta. (1980) 601: 559 71)、超音波處理法(ultrasonic treatment method)(Huang et al., Biochemistry (1969) 8: 344)、乙醇注射法(ethanol injection method)(Kremer et al., Biochemistry (1977) 16: 3932)、擠製法(extrusion method)(Hope et al., Biochim. Biophys. Acta (1985) 812:55 65)、法式擠壓法(French press method)(Barenholz et al., FEBS Lett. (1979) 99: 210)以及在 Szoka, F., Jr., et al., Ann. Rev. Biophys. Bioeng. 9:467 (1980)中所詳述的方法。上述所有方法皆為形成囊泡的基本製備技術,這些技術藉由引用併入本文。在滅菌之後,該預成型的微脂體在無菌下被充填於容器中,並接著冷凍乾燥成粉末或是餅塊(cake)。在包含有預先成型微脂體的脂質混合物之一具體例中,所述微脂體是藉由溶劑注射法所製得,並接著冷凍乾燥以形成脂質混合物。該脂質混合物可視需求(optionally)包含一種或多種體積膨脹劑(bulking agent)。在一具體例中,該脂質混合物進一步包含一種或多種緩衝劑(buffering agents)。
該體積膨脹劑包含但不限於:多元醇(polyols)或糖醇類(sugar alcohols),諸如甘露醇(mannitol)、甘油(glycerol)、山梨醇(sorbitol)、右旋糖(dextrose)、蔗糖(sucrose)、及/或海藻糖(trehalose);胺基酸,諸如組織胺(histidine)及甘胺酸(glycine)。一較佳的體積膨脹劑為甘露醇。
該緩衝劑包括但不限於:磷酸二氫鈉二水合物(sodium phosphate monobasic dihydrate)及無水磷酸氫二鈉(sodium phosphate dibasic anhydrous)。
在包含沒有預先成型微脂體的脂質混合物的具體例中,該脂質混合物可藉由溶解於一種合適的有機溶劑[包括但不限於:乙醇、甲醇、第三丁醇(t-butyl alcohol)、乙醚及氯仿]中,並且藉由加熱、真空蒸發(vacuum evaporation)、氮氣蒸發(nitrogen evaporation)、冷凍乾燥(lyophilization)或其他習知的去溶劑法來進行乾燥而製備而成。
活性劑
本文所使用之「活性劑(active agent)」包含了一治療劑或一顯影劑。
本揭露內容的活性劑可被混於水或是合適的緩衝液中,形成一含有該活性劑的水溶液,用於懸浮脂質混合物,以獲得本揭露內容之藥學組成物。在一些具體例中,該活性劑並未和脂質[諸如磷脂質或脂肪酸(如棕櫚酸)]共價結合(covalently bound)。
一方面,該治療劑意指一可誘導所需的藥理或生理作用之物質,該物質能減輕疾病或病症的症狀或預防其惡化。
本文中可被用於藥學組成物的治療劑包含了一種或多種抗血管新生劑(anti-angiogenesis agent)、抗發炎劑(anti-inflammatory agent)、免疫抑制劑(immunosuppressive agent)、抗菌劑(antimicrobial agent)或抗病毒劑(antiviral agent)。
抗血管新生劑的實例包含但不限於:貝伐單抗(bevacizumab)[商品名:癌思停(Avastin®, Genentech)]、蘭尼單抗(ranibizumab)[商品名:樂舒睛(Lucentis®, Genentech)]、 阿柏西普(aflibercept)[商品名:采視明(Eylea®, Regeneron)]、溴珠單抗(brolucizumab)[商品名:倍優視(Beovu®, Novartis)]及培加他尼(pegaptanib)[商品名:目可健(Macugen®, Valeant)]。
在一具體例中,該抗發炎劑包含但不限於:類固醇(特別是眼部類固醇),其衍生物、其藥學上可接受之鹽類或其前驅藥物。本揭露內容有用的類固醇包含任何天然存在之類固醇激素、合成類固醇及其衍生物。在一特定具體例中,該抗發炎劑為皮質類固醇(corticosteroid)。該類固醇實例包含,但不限於:皮質酮(cortisone)、氫化皮質酮(hydrocortisone)、醋酸氫化皮質酮(hydrocortisone acetate)、二甲丙酸替柔皮質醇(tixocortol pivalate)、氟洛皮質醇(fluocinolone)、去氫皮質醇(prednisolone)、甲基培尼皮質醇(methylprednisolone)、強體松(prednisolone)、丙酮特安皮質醇(triamcinolone acetonide)、特安皮質醇(triamcinolone)、莫米松(mometasone)、安西奈德(amcinonide)、布地奈德(budesonide)、地索奈德(desonide)、氟洛奈皮質醇(fluocinonide)、丙酮氟洛皮質醇(fluocinolone acetonide)、哈西奈德(halcinonide)、倍他米松(betamethasone)、倍他米松磷酸鈉(betamethasone sodium phosphate)、地塞米松(dexamethasone)、地塞米松磷酸鈉(dexamethasone sodium phosphate,DSP)、氟可龍(fluocortolone)、17-氫化可體松丁酸酯(hydrocortisone-17-butyrate)、17-氫化可體松戊酸酯(hydrocortisone-17-valerate)、二丙酸安氯皮質醇(aclometasone dipropionate)、戊酸倍他米松(betamethasone valerate)、二丙酸倍他米松(betamethasone dipropionate)、潑尼卡酯(prednicarbate)、17-可洛貝他松丁酸酯(clobetasone-17-butyrate)、17-可洛貝他索丙酸酯(clobetasol-17-propionate)、己酸氟可龍(fluocortolone caproate)、新戊酸氟可龍(fluocortolone pivalate)、醋酸氟潑尼汀(fluprednidene acetate)、二氟潑尼酯(difluprednate)、氯替波諾(loteprednol)、 氟美皮質醇(fluorometholone)、甲羥松利美索龍(medrysone rimexolone)、貝可皮質醇(beclomethasone)、氯波諾醇(cloprednol)、可的伐唑(cortivazol)、去氧皮質醇(deoxycortone)、二氟可的龍(difluorocortolone)、氟克諾龍(fluclorolone)、氟氫可的松(fludrocortisone)、氟米松(flumethasone)、氟尼縮松(flunisolide)、氟氫縮松(flurandrenolone)、甲潑尼松(meprednisone)、甲基培尼皮質醇(methylprednisolone)及帕拉米松(paramethasone)。於部分具體例中,該眼部類固醇為一水溶性類固醇。於部分具體例中,該水溶性類固醇為地塞米松磷酸鈉(DSP)。
免疫抑制劑的實例包含,但不限於:胺甲喋呤(methotrexate)、硫唑嘌呤(azathioprine)、黴酚酸酯(mycophenolate mofetil)、環孢素(cyclosporine)、塔克洛莫司(tacrolimus)、沃羅孢素(voclosporin)、環磷醯胺(cyclophosphamide)、氮芥苯丁酸(chlorambucil)、依西普(etanercept)、英夫利昔單抗(infliximab)、阿達木單抗(adalimumab)、利妥昔單抗(rituximab)、阿巴西普(abatacept)、阿那白滯素(anakinra)和達克立單抗(daclizumab)。
抗菌劑的實例包含,但不限於:萬古黴素(vancomycin)、頭孢他汀(ceftazidime)、阿米卡星(amikacin)、兩性黴素(amphotericin)和弗里康那唑(voriconazole)。
抗病毒劑的實例包含,但不限於:更昔洛韋(ganciclovir)、膦甲酸(foscarnet)、西多福韋(cidofovir)、和福米韋森(fomivirsen)。
在一些具體例中,該治療劑選自由貝伐單抗(bevacizumab)、蘭尼單抗(ranibizumab)、阿柏西普(aflibercept)、溴珠單抗(brolucizumab)、培加他尼(pegaptanib) 、皮質酮(cortisone)、氫化皮質酮(hydrocortisone)、醋酸氫化皮質酮(hydrocortisone acetate)、二甲丙酸替柔皮質醇(tixocortol pivalate)、氟洛皮質醇(fluocinolone)、去氫皮質醇(prednisolone)、甲基培尼皮質醇(methylprednisolone)、強體松(prednisolone)、丙酮特安皮質醇(triamcinolone acetonide)、特安皮質醇(triamcinolone)、莫米松(mometasone)、安西奈德(amcinonide)、布地奈德(budesonide)、地索奈德(desonide)、氟洛奈皮質醇(fluocinonide)、丙酮氟洛皮質醇(fluocinolone acetonide)、哈西奈德(halcinonide)、倍他米松(betamethasone)、倍他米松磷酸鈉(betamethasone sodium phosphate)、地塞米松(dexamethasone)、地塞米松磷酸鈉(dexamethasone sodium phosphate,DSP)、氟可龍(fluocortolone)、17-氫化可體松丁酸酯(hydrocortisone-17-butyrate)、17-氫化可體松戊酸酯(hydrocortisone-17-valerate)、二丙酸安氯皮質醇(aclometasone dipropionate)、戊酸倍他米松(betamethasone valerate)、二丙酸倍他米松(betamethasone dipropionate)、潑尼卡酯(prednicarbate)、17-可洛貝他松丁酸酯(clobetasone-17-butyrate)、17-可洛貝他索丙酸酯(clobetasol-17-propionate)、己酸氟可龍(fluocortolone caproate)、新戊酸氟可龍(fluocortolone pivalate)、醋酸氟潑尼汀(fluprednidene acetate)、二氟潑尼酯(difluprednate)、氯替波諾(loteprednol)、 氟美皮質醇(fluorometholone)、甲羥松利美索龍(medrysone rimexolone)、貝可皮質醇(beclomethasone)、氯波諾醇(cloprednol)、可的伐唑 (cortivazol)、 去氧皮質醇(deoxycortone)、二氟可的龍(difluorocortolone)、氟克諾龍(fluclorolone)、氟氫可的松(fludrocortisone)、氟米松(flumethasone)、氟尼縮松(flunisolide)、氟氫縮松(flurandrenolone)、甲潑尼松(meprednisone)、甲基培尼皮質醇(methylprednisolone)、帕拉米松 (paramethasone)、胺甲喋呤(methotrexate)、硫唑嘌呤(azathioprine)、黴酚酸酯(mycophenolate mofetil)、環孢素(cyclosporine)、塔克洛莫司(tacrolimus)、沃羅孢素(voclosporin)、環磷醯胺(cyclophosphamide)、氮芥苯丁酸(chlorambucil)、依西普(etanercept)、英夫利昔單抗(infliximab)、阿達木單抗(adalimumab)、利妥昔單抗(rituximab)、阿巴西普(abatacept)、阿那白滯素(anakinra)、達克立單抗(daclizumab)、萬古黴素(vancomycin)、頭孢他汀(ceftazidime)、阿米卡星(amikacin)、兩性黴素(amphotericin)、弗里康那唑(voriconazole)、更昔洛韋(ganciclovir)、膦甲酸(foscarnet)、西多福韋(cidofovir)、和福米韋森(fomivirsen)所組成的群組。
在一些具體例中,該治療劑是一種對VEGF具專一性的拮抗劑(antagonist),可為一種對VEGF具專一性的抗體、一種VEGF受器(receptor)、一種結合VEGF的核酸、或是一種可干擾VEGF及其同源(cognate)受器並阻斷VEGF信號通路的小分子。本文所使用的術語「抗體」,意指天然存在的免疫球蛋白(immunoglobulin)及其功能片段,或為一種經基因修飾的免疫球蛋白,諸如人源化抗體(humanized antibody)、嵌合抗體(chimeric antibody)或全人源抗體(full human antibody)。
在一些具體例中,該治療劑是一種對VEGF具專一性的抗體。該對VEGF具專一性的抗體可以是一擁有全長重鏈及輕鏈的完整抗體分子,或一具有功能性的片段,諸如Fab、Fab’、F(ab)2、F(ab’)2、scFv、di-scFv、scFv-Fc、單域抗體(single domain antibody)、雙體(diabody)和三體(triabody)。
另一方面,該顯影劑意指一用於影像應用之物質。顯影劑的實例包含,但不限於:放射性共軛物(radioconjugate)、螢光劑(fluorescent agents)、釓-DTPA (gadolinium-DTPA,Gd-DTPA)、氧化鐵(iron oxide)、氧化錳(manganese oxide)和量子點(quantum dots)。
生物相容水凝膠
本文所使用之術語「生物相容水凝膠(biocompatible hydrogel)」,係指一對活細胞無毒性的物質,且該物質中的聚合物形成網狀結構(例如藉由化學鍵結),並能保留大量水分在該網狀結構內。
在一具體例中,該生物相容水凝膠包含一種選自由下列聚合物所組成的群組:多醣(polysaccharide)、聚磷腈(polyphosphazene)、聚(丙烯酸)[poly(acrylic acids)]、聚(甲基丙烯酸)[poly(methacrylic acids)]、聚(環氧烷)[poly(alkylene oxides)]、聚(乙酸乙烯酯)[poly(vinyl acetate)]、聚乙烯吡咯烷酮(polyvinylpyrrolidone,PVP)、及其共聚物和共混物。
在一具體例中,該生物相容水凝膠包含一選自由下列多醣所組成的群組:玻尿酸(hyaluronic acid,HA)、藻酸鹽(alginate)、洋菜糖(agarose)、幾丁聚醣(chitosan)、膠原蛋白(collagen)、硫酸軟骨素(chondroitin sulfate)、明膠(gelatin)、纖維素硫酸鈉(sodium cellulose sulfate),及其組合。
根據本揭露內容,生物相容水凝膠的範例包含,但不限於:多醣,特別是無支鏈黏多醣。在部分具體例中,根據本揭露的生物相容水凝膠包含,但不限於:O連結或N連結的醣胺聚醣(O-linked or N-linked glycosaminoglycan),特別是非硫化醣胺聚醣。在部分具體例中,根據本揭露的生物相容水凝膠包含,但不限於:一種陰離子、非硫化的醣胺聚醣。
在一具體例中,該生物相容水凝膠包含玻尿酸。
在一些具體例中,該生物相容水凝膠的分子量為:大約4 kDa至大約8000 kDa、視需求大約4 kDa至大約7000 kDa、視需求大約50 kDa至大約8000 kDa、視需求大約50 kDa至大約7000 kDa、視需求大約50 kDa至大約6000 kDa、視需求大約50 kDa至大約5000 kDa、視需求大約50 kDa至大約4000 kDa、視需求大約50 kDa至大約3000 kDa、視需求大約50 kDa至大約2500 kDa、視需求大約50 kDa至大約2000 kDa、視需求大約100 kDa至大約2500 kDa、視需求大約100 kDa至大約2000 kDa、視需求大約1500 kDa至大約1800 kDa。
藥學組成物
本揭露內容的藥學組成物適合用於遞送活性劑至眼睛,並且包含:包含一種或多種脂質(如磷脂質)的脂質混合物;一種有效劑量的活性劑或其藥學上可接受之鹽類;一種生物相容水凝膠;其中,與未含該生物相容水凝膠的藥學組成物對照組的眼部副作用相比,所述藥學組成物的眼部副作用是降低的。該藥學組成物對照組包含,但不限於:本揭露的一種或多種脂質、活性劑或其藥學上可接受之鹽類,但不含生物相容水凝膠(因而該藥學組成物對照組造成眼部副作用)。與未含生物相容水凝膠的藥學組成物對照組相比,於玻璃體內注射本文的藥學組成物後,眼部副作用可降低大約10%至大約100%、大約10%至40%,或大約20%至40%,尤其是至少10%、至少15%、至少20%、至少25%、至少30%、至少35%、至少40%、至少45%以及至少50%。
在一具體例中,該一種或多種脂質(如磷脂質)的量介於:自大約2 μmol至大約200 μmol每毫升藥學組成物、視需求自大約10 μmol至大約200 μmol每毫升藥學組成物、視需求自大約10 μmol至大約150 μmol每毫升藥學組成物、視需求自大約20 μmol至大約150 μmol每毫升藥學組成物、視需求自大約20 μmol至大約125 μmol每毫升藥學組成物、視需求自大約30 μmol至大約125 μmol每毫升藥學組成物、視需求自大約30 μmol至大約100 μmol每毫升藥學組成物、視需求自大約40 μmol至大約100 μmol每毫升藥學組成物、視需求自大約50 μmol至大約100 μmol每毫升藥學組成物、視需求自大約60 μmol至大約100 μmol 每毫升藥學組成物。
在一具體例中,生物相容水凝膠於該藥學組成物內的濃度介於:自大約0.01% (w/v) 至大約0.75% (w/v)、視需求大約0.05% (w/v) 至大約0.75% (w/v)、視需求大約0.01% (w/v) 至大約0.6% (w/v)、視需求大約0.05% (w/v)至大約0.6% (w/v)、視需求大約0.01% (w/v) 至大約0.5% (w/v)、視需求大約0.05% (w/v) 至大約0.5% (w/v)、視需求大約0.06% (w/v) 至大約0.5% (w/v)、視需求大約0.07% (w/v) 至大約0.5% (w/v)、視需求大約0.08% (w/v) 至大約0.5% (w/v)、視需求大約0.09% (w/v) 至大約0.5% (w/v)、視需求大約0.0912% (w/v) 至大約0.456% (w/v)。
在一具體例中,該藥學組成物製備的過程包含:提供該脂質混合物與該活性劑於一懸浮液中,將該懸浮液與一含有生物相容水凝膠的溶液混合,藉此形成含脂質顆粒及生物相容水凝膠的混合物。
在一特定具體例中,所述之懸浮液是由含活性劑的水溶液重組(reconstituting)一包含脂質混合物的凍乾脂質餅塊(lyophilized lipid cake)製備而成。在另一特定具體例中,所述之懸浮液是由水溶液重組一包含脂質混合物和活性劑的凍乾組合物製備而成。
在一具體例中,提供脂質混合物與活性劑於懸浮液中的步驟包含:以水溶液重組脂質混合物及活性藥物以形成脂質奈米顆粒於懸浮液中。於混合的步驟中,脂質奈米顆粒與生物相容水凝膠的混合物形成於該藥學組成物中。在投予該藥學組成物至有需求的個體後,該藥學組成物中活性劑持續在該個體的玻璃體中釋放且不會造成玻璃體混濁。在一些具體例中,該脂質奈米顆粒包含多層囊泡,且部分的活性劑附著於(associated)該多層囊泡。
在一具體例中,該藥學組成物是藉由:玻璃體內注射(intravitreal injection)、結膜下注射(subconjunctival injection)、視網膜下注射(subretinal injection)、前房內注射(intracameral injection)、或局部投藥,將活性劑遞送至眼睛。在一特定具體例中,該藥學組成物遞送活性藥物至眼睛是藉由注射,特別是玻璃體內注射。
在一具體例中,該眼部副作用包括了玻璃體混濁。玻璃體混濁在被投予微脂體組成物至眼睛的玻璃體後可被察覺,該組成物包含一包含一種或多種磷脂質的脂質混合物,及一有效劑量的活性劑或其藥學上可接受之鹽類。
本揭露內容的藥學組成物比未含生物相容水凝膠的藥學組成物對照組有更高的黏度。脂質奈米顆粒和生物相容水凝膠混合後形成本揭露之藥學組成物,和未含生物相容水凝膠其餘成分皆相同的眼科用藥學組成物對照組相比,可被保留在玻璃體中,使得注射後初期造成的玻璃體混濁現象得以降低。特別是,該眼科用藥學組成物對照組可能是一種脂質奈米顆粒懸浮液。另一方面,於玻璃體注射後,本揭露之藥學組成物可在脂質奈米顆粒(例如多層囊泡)於玻璃體內完全分散後,仍在有需求之個體的玻璃體內停留一段時間。相對於眼科用藥學組成物對照組,注射本揭露的藥學組成物之玻璃體有著較低的濁度。
治療眼科疾病或病症(disorder)之方法
本揭露內容的一個面向係一種遞送活性劑至有需求的個體玻璃體中之方法,其包含投予上述藥學組成物。
本揭露內容之藥學組成物係用於治療眼科疾病或病症。
在一具體例中,根據本揭露內容,有需求的個體承受著至少一種的眼科疾病或病症。眼科疾病或病症的實例包含但不限於:黃斑部病變(macular degeneration)、黃斑囊樣水腫(cystoid macular edema,CME)、糖尿病性黃斑病變(diabetic maculopathy)、增殖性糖尿病視網膜病變(proliferative diabetic retinopathy,PDR)、糖尿病性黃斑水腫(diabetic macular edema)、視網膜靜脈阻塞(retinal vein occlusions,RVO)、新生血管性青光眼(neovascular glaucoma,NVG)、視網膜血管瘤(retinal vascular tumors)、脈絡膜血管瘤(choroidal hemangiomas)、脈絡膜黑色素瘤(choroidal melanoma)、血管增生性眼部腫瘤(vasoproliferative ocular tumor)、虹膜黑色素瘤(Iris melanoma)、放射性視網膜病變(radiation retinopathy)、中心性漿液性脈絡膜視網膜病變(central serous chorioretinopathy,CSR)、早產兒視網膜病變(retinopathy of prematurity,ROP)、眼內炎(endophthalmitis)、葡萄膜炎(uveitis)及視網膜炎(retinitis)。
在一具體例中,投予該藥學組成物包含玻璃體內投予該藥學組成物至玻璃體。
本揭露內容的一個面向係一種遞送活性劑至有需求的個體玻璃體之方法,及降低微脂體組成物的眼部副作用,包含投予上述藥學組成物。
在一具體例中,投予該藥學組成物包含玻璃體內投予該藥學組成物至玻璃體。
在一具體例中,該眼部副作用包含玻璃體混濁。玻璃體濁度上升在投予未含生物相容水凝膠之微脂體組成物至玻璃體後可被察覺。然而,與未含生物相容水凝膠其餘成份皆相同的藥學組成物相比,投予本揭露的藥學組成物至玻璃體可降低玻璃體濁度。
在部分具體例中,依據本揭露內容,該藥學組成物的磷脂質濃度介於自大約50 mM至大約150mM,而該生物相容水凝膠的量大約為0.05%至1% (w/v)、大約0.1%至0.9% (w/v)或大約0.2%至0.5% (w/v)。該藥學組成物於玻璃體內投予後,與未含生物相容水凝膠的藥學組成物對照組相比,玻璃體濁度降低了大約10%至大約100%、大約10%至40%,或大約20%至40%,尤其是至少10%、至少15%、至少20%、至少25%、至少30%、至少35%、至少40%、至少45%以及至少50%。依據本揭露內容,該藥學組成物的黏度可為:在20°C下15至220 mPa·S或/及在37 °C下5至100 mPa·S;在20°C下10至45 mPa·S或/及在37 °C下5至30 mPa·S;在20°C下45至220 mPa·S或/及在37 °C下25至100 mPa·S。
以下的實施例進一步說明了本揭露內容。這些實施例僅旨在說明本揭露內容而不應被解釋為限制。
實施例
以下實施例說明了本揭露內容部分具體實例的製備及性質。
實施例1:製備用於藥物遞送的微脂體組成物
A. 製備餅塊脂質(lipid cake)
一種含有一或多種脂質的脂質混合物,包括DOPC、DOPG及膽固醇,以67.5:7.5:25的莫耳比例形成(DOPC:DOPG:膽固醇),並且在大約40 °C下溶於無水乙醇中。以一桌上型超音波水浴槽(tabletop ultrasonic bath)將脂質溶解。將溶解的脂質溶液加入1 mM的磷酸鈉(sodium phosphate)溶液中形成前驅微脂體(pro-liposome)懸浮液,接著藉由擠壓該前驅微脂體懸浮液通過一孔徑為0.2 μm的聚碳酸酯膜(polycarbonate membrane),並重複6至10個循環以形成微脂體懸浮液。該微脂體懸浮液藉由Spectrum® 中空纖維膜(Hollow Fiber Filter Modules)的切向流過濾系統(tangential flow filtration system),使用100 kDa截留分子量、膜表面積為115 cm
2的改良式聚醚碸(modified polyethersulfone, mPES)膜,以1 mM磷酸鈉溶液進行透析並且濃縮,接著以0.2 μm孔徑的無菌過濾器過濾,而得到無菌微脂體懸浮液。該磷脂質於無菌微脂體懸浮液中的濃度以磷分析法進行定量。該無菌微脂體懸浮液接著以2 w/w%濃度的滅菌甘露醇(mannitol)[作為冷凍保護劑(cryoprotectant)]調劑,並於無菌下填充至瓶(vials)中,接著被冷凍乾燥成脂質餅塊(lipid cake)。
B. 重組脂質餅塊以形成微脂體-藥物組成物(liposome-drug composition)
該微脂體劑型的活性劑組成物(亦即微脂體-藥物組成物),包含可藉由重組脂質餅塊(於實施例1A中製備)和活性劑(如治療劑或顯影劑)而製得的脂質混合物。於本實施例中,活性劑的範例為地塞米松磷酸鈉(dexamethasone sodium phosphate,DSP)和貝伐單抗(bevacizumab)。
I. 微脂體-地塞米松磷酸鈉組成物(liposome-DSP composition)
該微脂體劑型的地塞米松磷酸鈉組成物(也表示為微脂體-地塞米松磷酸鈉組成物)是藉由重組脂質餅塊(於實施例1A中製備)和一地塞米松磷酸鈉水溶液(含有13.2 mg/mL的地塞米松磷酸鈉及4.6 mg/mL的檸檬酸鈉)所製備而成。視添加的地塞米松磷酸鈉溶液體積而定,該微脂體-地塞米松磷酸鈉組成物中磷脂質的濃度為100 mM或167 mM。
II. 微脂體-貝伐單抗組成物
該微脂體劑型的貝伐單抗(一種對VEGF具有專一性的抗體)是藉由重組脂質餅塊(於實施例1A中製備)和含有適量貝伐單抗的水溶液所製備而成。該貝伐單抗於該重組的微脂體-貝伐單抗組成物中的濃度可以是,舉例來說,25 mg/mL。
實施例2:製備水凝膠溶液
本實例中的水凝膠溶液為一種包含生物相容水凝膠的水溶液,其製備方法詳述如下,其中該生物相容水凝膠包含玻尿酸:將玻尿酸粉末[來自馬鏈球菌(
Streptococcus equi)的玻尿酸鈉鹽,Sigma]以指定的濃度(如表1所示)溶於去離子水(使用Milli-Q純化系統,Millipore)或緩衝液[10 mM羥乙基哌嗪乙硫磺酸/145 mM氯化鈉(10 mM HEPES/145 mM NaCl)、10 mM L-組胺酸/145 mM氯化鈉(10 mM L-histidine/145 mM NaCl)或磷酸鹽緩衝生理食鹽水(Phosphate buffered saline,PBS,Gibco®/Thermo Fisher Scientific)]中,於4 °C下攪拌過夜使玻尿酸能充分溶解並且交聯。
用於溶解玻尿酸的緩衝液製備如下:
(1) 10 mM HEPES/145 mM NaCl:將119.15 mg的HEPES和423.69 mg的NaCl溶於50 mL的去離子水中,以氫氧化鈉(NaOH)及/或氫氯酸(HCl)調整溶液的pH值至7.4。
(2). 10 mM L-histidine/145 mM NaCl:將77.75 mg的L-histidine和423.69 mg的NaCl溶於50 mL的去離子水中,其pH值約為7.56。
表1 玻尿酸溶液
實施例3:製備水凝膠/微脂體-藥物組成物(hydrogel/liposome-drug compositions)
玻 尿酸濃度 (w/v %) | 溶解玻尿酸之緩衝液 |
0.228 | ddH 2O |
0.57 | |
0.228 | HEPES/NaCl |
0.57 | |
1.14 | |
1.14 | L-histidine/NaCl |
2.28 | |
5.7 | |
11.4 | |
0.57 | PBS |
1.14 |
將該水凝膠溶液和重組的微脂體-藥物組成物混合,得到一藥學組成物,其包含水凝膠及微脂體劑型的活性劑(也表示為水凝膠/微脂體-藥物組成物)。
I. 水凝膠/微脂體-地塞米松磷酸鈉組成物(HA/liposome-DSP composition)
該玻尿酸溶液和前例所述之方法重組的微脂體-地塞米松磷酸鈉組成物,以體積比例2:3混合,形成玻尿酸/微脂體-地塞米松磷酸鈉組成物。玻尿酸和磷脂質於玻尿酸/微脂體-地塞米松磷酸鈉組成物的最終含量列於表4。
II. 水凝膠/微脂體-貝伐單抗組成物(HA/liposome-bevacizumab composition)
該玻尿酸溶液和重組的微脂體-貝伐單抗組成物互相混合,形成玻尿酸/微脂體-貝伐單抗組成物。
實施例4:水凝膠/微脂體-藥物組成物的黏度測定和可注射性評估
該樣本的黏度由一帶有HVROC-T/溫度控制器的黏度計 (μVISC
TM/HVROC-S,RheoSense) 所測量。於測量前,將黏度計的溫度設於20 °C或37 °C並且平衡至溫度穩定狀態。將400 μL的樣品裝載至拋棄式黏度計吸管中,安裝至黏度計上以進行測量。每個樣品皆進行三重複測量。樣品的可注射性評估採用以24G針頭抽取、30G針頭注射樣品的方式進行。樣品的黏度與可注射性結果於表2至表4列出。
如表4所示,隨著玻尿酸濃度上升,該玻尿酸/微脂體-地塞米松磷酸鈉組成物的黏度也隨之上升。該玻尿酸/微脂體-地塞米松磷酸鈉組成物的黏度影響了其可注射性。因此,適用於本揭露內容的可注射水凝膠/微脂體-藥物組成物,其水凝膠濃度在一特定指示範圍內。
表2 玻尿酸溶液之黏度
表3 微脂體-地塞米松磷酸鈉組成物的黏度
表4 玻尿酸/微脂體-地塞米松磷酸鈉組成物之黏度與可注射性
實施例5:該藥學組成物的分散特性 (dispersion behavior)
玻 尿酸濃度 (w/v %) | 溶解玻尿酸之緩衝液 | 20 °C 下樣品的黏度 (mPa·S) |
0.228 | HEPES/NaCl | 17.52 |
0.57 | 85.32 | |
1.14 | 2785.33 |
樣品 | 磷脂質濃度 (mM) | 20 °C 下樣品的黏度 (mPa·S) |
L1 | 100 | 21 |
L2 | 167 | 35 |
樣品 | 玻 尿酸濃度 (w/v %) | 磷脂質濃度 (mM) | 可注射性 | 20 °C 下樣品的黏度 (mPa·S) | 37 °C 下樣品的黏度 (mPa·S) |
H1 | 0.0912 | 60 | O | 19.35 | 8.6 |
H2 | 0.228 | O | 44.28 | 29.5 | |
H3 | 0.456 | O | 205.4 | 77.85 | |
H4 | 0.912 | X | NA | NA | |
H5 | 0.228 | 100 | O | 98.12 | 58.5 |
H6 | 0.456 | O | NA | NA |
該微脂體-地塞米松磷酸鈉組成物和玻尿酸/微脂體-地塞米松磷酸鈉組成物於介質中的分散特性是由目視查看。將30 μL的微脂體-地塞米松磷酸鈉組成物或50 μL的玻尿酸/微脂體-地塞米松磷酸鈉組成物緩慢加入至透明玻璃瓶的2 mL生理食鹽水中,其中微脂體-地塞米松磷酸鈉組成物和玻尿酸/微脂體-地塞米松磷酸鈉組成物各別的磷脂質總含量相同。該玻璃瓶被存放於37 °C中,而樣品之分散特性於存放後特定的時間點進行紀錄:(A)0小時、(B)1小時、(C)2小時、(D)3小時和(E)24小時。圖1A到1E中樣品的標示(從左到右)分別為:(1) 微脂體-地塞米松磷酸鈉組成物;(2)0.228%玻尿酸(PBS)/微脂體-地塞米松磷酸鈉組成物;(3) 0.228%玻尿酸(HEPES/NaCl)/微脂體-地塞米松磷酸鈉組成物;(4)0.456%玻尿酸(PBS)/微脂體-地塞米松磷酸鈉組成物;(5) 0.456%玻尿酸(HEPES/NaCl)/微脂體-地塞米松磷酸鈉組成物。該批樣品被存放於37 °C中,其分散特性於存放後特定的時間點: 0小時、1小時、2小時、3小時和24小時以照片記錄之。
如圖1E顯示,樣品於存放後24小時在未被攪拌/晃動的情形下,微脂體-地塞米松磷酸鈉組成物已完全分散至生理食鹽水中(樣品1),而所有玻尿酸/微脂體-地塞米松磷酸鈉組成物皆維持未分散的小團塊於玻璃瓶底部。此外,玻尿酸/微脂體-地塞米松磷酸鈉組成物中玻尿酸的濃度越高,該組成物越少自發性的分散情形也被觀察到,此現象可歸因於該組成物的黏度。
實施例6:濁度(turbidity)分析
濁度是一種測量溶液因分散顆粒的存在而失去其透明度的程度。本文中我們測量樣品在波長400到700奈米(可見光範圍)區間的吸光值(absorbance)。根據吸光值的定義(公式2),樣品有越高的吸光值,其透光率(transmittance)越低,亦即表示該溶液的濁度越高(更多的光被散射,公式1)。分析樣品製備:將50 μL的微脂體-地塞米松磷酸鈉組成物(樣品L1)或50 μL的玻尿酸/微脂體-地塞米松磷酸鈉組成物(樣品H5和H6)加入2 mL的生理食鹽水中,其中微脂體-地塞米松磷酸鈉組成物和玻尿酸/微脂體-地塞米松磷酸鈉組成物各別的磷脂質總含量相同。持續震動該批樣品直到微脂體-地塞米松磷酸鈉組成物或玻尿酸/微脂體-地塞米松磷酸鈉組成物完全分散於生理食鹽水中。將均勻混合後的樣品轉移到96孔盤中,每孔裝入200 μL樣品,並於微量盤檢測儀[microplate reader (Synergy H1,BioTek)]中進行波長400到700奈米吸光值的測量。
公式 1
公式 2
I:透射光(輸出)[Transmitted light (output)]
I
0:入射光(輸入)[Incident light (input)]
圖2A顯示,在400到700奈米這波長範圍中,微脂體-地塞米松磷酸鈉組成物有著比玻尿酸/微脂體-地塞米松磷酸鈉組成物更高的吸收光譜。該結果指明了一種非預期的效果,在組成物完全分散於生理食鹽水後,玻尿酸/微脂體-地塞米松磷酸鈉組成物比微脂體-地塞米松磷酸鈉組成物減少了濁度。此外,組成物中玻尿酸的含量越高,濁度降低的效果越好。值得注意的是,玻尿酸/微脂體-地塞米松磷酸鈉組成物的濁度降低效應涵蓋了整個可見光測試範圍(波長400到700奈米)。在日光條件下,人眼最敏感的光波長為555奈米。在555奈米光波長下,含有0.228%玻尿酸的微脂體-地塞米松磷酸鈉組成物之濁度比微脂體-地塞米松磷酸鈉組成物低了21%。含有0.456%玻尿酸的微脂體-地塞米松磷酸鈉組成物之濁度比單純的微脂體-地塞米松磷酸鈉組成物低了37%。
實施例7:活性劑的體外釋放(in vitro release,IVR)
活性劑從微脂體-藥物組成物和玻尿酸/微脂體-藥物組成物中於體外釋放的評估,是藉由使用一種溶離裝置,其包含了Float-A-Lyzer
®G2的透析管(Spectra/Por®,截留分子量20 kDa,體積1 mL)作為儲樣槽,周圍環繞釋放介質(release medium)於玻璃瓶中。將下列實驗內容分別裝載至儲樣槽中:(1) 760 μL的生理食鹽水和240 μL的微脂體-地塞米松磷酸鈉組成物(樣品L1,該樣品緩緩加入生理食鹽水中);(2) 600 μL的生理食鹽水和400 μL含0.456%玻尿酸/微脂體-地塞米松磷酸鈉組成物(樣品H3,該樣品緩緩加入生理食鹽水中),其中於儲樣槽內樣品中磷脂質和地塞米松磷酸鈉各別的總含量在此兩組實驗中皆相同。本體外釋放實驗以生理食鹽水作為釋放介質。將該儲樣槽放置於裝著200 mL釋放介質的玻璃瓶中,該實驗系統於37 °C下緩慢攪拌以加速地塞米松磷酸鈉從儲樣槽中溶離至釋放介質中。於指定的時間點收集1 mL的釋放介質,測量(於241奈米波長的UV吸收光)並計算地塞米松磷酸鈉的釋放含量。
該IVR結果於圖3可看出,玻尿酸/微脂體-地塞米松磷酸鈉組成物和微脂體-地塞米松磷酸鈉組成物的釋放型態在24小時內是相似的。如同微脂體-地塞米松磷酸鈉組成物為眾所周知的緩釋藥學組成物,我們斷定玻尿酸/微脂體-地塞米松磷酸鈉組成物提供一個可和單純的微脂體-地塞米松磷酸鈉組成物相當的(comparable)活性劑緩釋形態(從藥學組成物中)。
圖1A至1E的照片呈現了微脂體-地塞米松磷酸鈉(liposome-DSP)組成物與玻尿酸/微脂體-地塞米松磷酸鈉(HA/liposome-DSP)組成物於37 °C的生理食鹽水中分散的情形。
圖2A及2B之圖表為在生理食鹽水中分散的微脂體-地塞米松磷酸鈉(liposome-DSP)組成物和玻尿酸/微脂體-地塞米松磷酸鈉(HA/liposome-DSP)組成物所測量出之濁度。圖2A顯示微脂體-地塞米松磷酸鈉組成物和玻尿酸/微脂體-地塞米松磷酸鈉組成物在食鹽水中皆分散良好。將該分散均勻的溶液加入96孔盤中,於波長400至700奈米量測所得的吸光值,並以吸光值來推算樣品的濁度(光波被吸收越多表示濁度越高)。空白溶液[生理食鹽水、水、地塞米松磷酸鈉(DSP)溶液、及羥乙基哌嗪乙硫磺酸/氯化鈉(HEPES/NaCl)緩衝液]也同時被測量作為對照組。圖2B顯示了各樣品於555奈米波長的吸光值。
圖3之折線圖顯示了於食鹽水中,地塞米松磷酸鈉(DSP)從微脂體-地塞米松磷酸鈉(liposome-DSP)組成物(樣本L1)和玻尿酸/微脂體-地塞米松磷酸鈉(HA/liposome-DSP)組成物(樣本H3)體外釋放的情形。兩組樣本中的磷脂質與地塞米松磷酸鈉的各別總含量皆相同。
Claims (27)
- 一種用於遞送活性劑至眼睛的藥學組成物,該藥學組成物包含: 包含一種或多種脂質的脂質混合物; 一種達有效劑量的活性劑或其藥學上可接受的鹽類;及 一種生物相容水凝膠; 其中,和未含生物相容水凝膠的藥學組成物對照組引起的眼部副作用相比,使用所述的藥學組成物將該活性劑遞送至該眼睛引起的眼部副作用是降低的。
- 如請求項1的藥學組成物,其中該生物相容水凝膠包含一種選自由下列聚合物所組成的群組:多醣(polysaccharide)、聚磷腈(polyphosphazene)、聚(丙烯酸)[poly(acrylic acids)]、聚(甲基丙烯酸)[poly(methacrylic acids)]、聚(環氧烷)[poly(alkylene oxides)]、聚(乙酸乙烯酯)[poly(vinyl acetate)]、聚乙烯吡咯烷酮(polyvinylpyrrolidone,PVP)和它們的共聚物,及其組合。
- 如請求項1的藥學組成物,其中該生物相容水凝膠包含一種選自由下列多醣所組成的群組:玻尿酸(hyaluronic acid,HA)、藻酸鹽(alginate)、洋菜糖(agarose)、幾丁聚醣(chitosan)、膠原蛋白(collagen)、硫酸軟骨素(chondroitin sulfate)、明膠(gelatin)、纖維素硫酸鈉(sodium cellulose sulfate),及其組合。
- 如請求項1的藥學組成物,其中該生物相容水凝膠包含玻尿酸。
- 如請求項1的藥學組成物,其中該生物相容水凝膠的分子量介於約4 kDa至約8000 kDa。
- 如請求項1至5中任一項的藥學組成物,其中該生物相容水凝膠所呈現的濃度在自約0.01% (w/v)至約0.75% (w/v)的範圍內。
- 如請求項1至5中任一項的藥學組成物,其中該生物相容水凝膠所呈現的濃度在自約0.09% (w/v)至約0.5% (w/v)的範圍內。
- 如請求項1至5中任一項的藥學組成物,其中該脂質混合物包含一種或多種選自由下列磷脂質所組成的群組:1,2-二油醯基-sn-丙三醇-3-磷脂醯膽鹼(DOPC)及二油醯基磷脂醯甘油(DOPG)。
- 如請求項6的藥學組成物,其中該脂質混合物包含一種或多種選自由下列磷脂質所組成的群組:1,2-二油醯基-sn-丙三醇-3-磷脂醯膽鹼(DOPC)及二油醯基磷脂醯甘油(DOPG)。
- 如請求項7的藥學組成物,其中該脂質混合物包含一種或多種選自由下列磷脂質所組成的群組:1,2-二油醯基-sn-丙三醇-3-磷脂醯膽鹼(DOPC)及二油醯基磷脂醯甘油(DOPG)。
- 如請求項8的藥學組成物,其中該脂質混合物進一步包含膽固醇。
- 如請求項1至5中任一項的藥學組成物,該藥學組成物的製備方法包含: 提供該脂質混合物和該活性劑於一懸浮液中;及 混合該懸浮液和一包含該生物相容水凝膠的溶液, 藉此形成一脂質奈米顆粒與該生物相容水凝膠的混合物。
- 如請求項1至5中任一項的藥學組成物,其中該活性劑是一種治療劑或一種顯影劑。
- 如請求項13的藥學組成物,其中該治療劑是一種抗血管新生劑、抗發炎分子、免疫抑制劑、抗菌劑或抗病毒劑。
- 如請求項13的藥學組成物,其中該治療劑是選自由貝伐單抗(bevacizumab)、蘭尼單抗(ranibizumab)、阿柏西普(aflibercept)、溴珠單抗(brolucizumab)、培加他尼(pegaptanib)、皮質酮(cortisone)、氫化皮質酮(hydrocortisone)、醋酸氫化皮質酮(hydrocortisone acetate)、二甲丙酸替柔皮質醇(tixocortol pivalate)、氟洛皮質醇(fluocinolone)、去氫皮質醇(prednisolone)、甲基培尼皮質醇(methylprednisolone)、強體松(prednisolone)、丙酮特安皮質醇(triamcinolone acetonide)、特安皮質醇(triamcinolone)、莫米松(mometasone)、安西奈德(amcinonide)、布地奈德(budesonide)、地索奈德(desonide)、氟洛奈皮質醇(fluocinonide)、丙酮氟洛皮質醇(fluocinolone acetonide)、哈西奈德(halcinonide)、倍他米松(betamethasone)、倍他米松磷酸鈉(betamethasone sodium phosphate)、地塞米松(dexamethasone)、地塞米松磷酸鈉(dexamethasone sodium phosphate,DSP)、氟可龍(fluocortolone)、17-氫化可體松丁酸酯(hydrocortisone-17-butyrate)、17-氫化可體松戊酸酯(hydrocortisone-17-valerate)、二丙酸安氯皮質醇(aclometasone dipropionate)、戊酸倍他米松(betamethasone valerate)、二丙酸倍他米松(betamethasone dipropionate)、潑尼卡酯(prednicarbate)、17-可洛貝他松丁酸酯(clobetasone-17-butyrate)、17-可洛貝他索丙酸酯(clobetasol-17-propionate)、己酸氟可龍(fluocortolone caproate)、新戊酸氟可龍(fluocortolone pivalate)、醋酸氟潑尼汀(fluprednidene acetate)、二氟潑尼酯(difluprednate)、氯替波諾(loteprednol)、氟美皮質醇(fluorometholone)、甲羥松利美索龍(medrysone rimexolone)、貝可皮質醇(beclomethasone)、氯波諾醇(cloprednol)、可的伐唑(cortivazol)、 去氧皮質醇(deoxycortone)、二氟可的龍(difluorocortolone)、氟克諾龍(fluclorolone)、氟氫可的松(fludrocortisone)、氟米松(flumethasone)、氟尼縮松(flunisolide)、氟氫縮松(flurandrenolone)、甲潑尼松(meprednisone)、甲基培尼皮質醇(methylprednisolone)、帕拉米松(paramethasone)、胺甲喋呤(methotrexate)、硫唑嘌呤(azathioprine)、黴酚酸酯(mycophenolate mofetil)、環孢素(cyclosporine)、塔克洛莫司(tacrolimus)、沃羅孢素(voclosporin)、環磷醯胺(cyclophosphamide)、氮芥苯丁酸(chlorambucil)、依西普(etanercept)、英夫利昔單抗(infliximab)、阿達木單抗(adalimumab)、利妥昔單抗(rituximab)、阿巴西普(abatacept)、阿那白滯素(anakinra)、達克立單抗(daclizumab)、萬古黴素(vancomycin)、頭孢他汀(ceftazidime)、阿米卡星(amikacin)、兩性黴素(amphotericin)、弗里康那唑(voriconazole)、更昔洛韋(ganciclovir)、膦甲酸(foscarnet)、西多福韋(cidofovir)、和福米韋森(fomivirsen)所組成的群組。
- 如請求項13的藥學組成物,其中該治療劑是一種抗血管新生劑,視需求是一種對VEGF具專一性的拮抗劑(antagonist),其選自由對VEGF具專一性的抗體、VEGF受器(receptor)、核酸、及小分子所組成的群組。
- 如請求項16的藥學組成物,其中該對VEGF具專一性的抗體選自由完整抗體分子、Fab、Fab’、F(ab)2、F(ab’)2、scFv、di-scFv、scFv-Fc、單域抗體(single domain antibody)、雙體(diabody)及三體(triabody)所組成的群組。
- 如請求項13的藥學組成物,其中該治療劑是皮質類固醇(corticosteroid)。
- 如請求項1至5中任一項的藥學組成物,其中該一種或多種脂質的含量於每毫升藥學組成物中是介於大約2 μmol至大約200 μmol。
- 如請求項1至5中任一項的藥學組成物,其中該一種或多種脂質的含量於每毫升藥學組成物中是介於大約60 μmol至大約100 μmol。
- 如請求項1至5中任一項的藥學組成物,其中該藥學組成物是用於將活性劑遞送至該眼睛的玻璃體。
- 如請求項1至5中任一項的藥學組成物,該藥學組成物包含的一種或多種脂質的濃度是50 mM至150 mM;該生物相容水凝膠的含量是0.05%至1% (w/v);其中該藥學組成物的黏度是於20°C下大約15至 220 mPa·S或/及於37°C下5至100 mPa·S。
- 一種用於遞送活性劑至有需求之個體的玻璃體的方法,該方法包含投予如請求項1至22中任一項的藥學組成物。
- 如請求項23的方法,其中該有需求之個體是承受了至少一種選自由下列病症所組成的群組:視網膜疾病(retinal diseases)、黃斑部病變(macular degeneration)、老年性黃斑部病變(age-related macular degeneration)、黃斑囊樣水腫(cystoid macular edema,CME)、糖尿病性黃斑病變(diabetic maculopathy)、增殖性糖尿病視網膜病變(proliferative diabetic retinopathy,PDR)、糖尿病性黃斑水腫(diabetic macular edema)、視網膜靜脈阻塞(retinal vein occlusions,RVO)、新生血管性青光眼(neovascular glaucoma,NVG)、視網膜血管瘤(retinal vascular tumors)、脈絡膜血管瘤(choroidal hemangiomas)、脈絡膜黑色素瘤(choroidal melanoma)、血管增生性眼部腫瘤(vasoproliferative ocular tumor)、虹膜黑色素瘤(Iris melanoma)、放射性視網膜病變(radiation retinopathy)、中心性漿液性脈絡膜視網膜病變(central serous chorioretinopathy,CSR)、早產兒視網膜病變(retinopathy of prematurity,ROP)、眼內炎(endophthalmitis)、葡萄膜炎(uveitis)及視網膜炎(retinitis)。
- 如請求項23的方法,其中該藥學組成物的投予包含玻璃體內投予該藥學組成物至該有需求之個體的玻璃體。
- 一種用於減少對有需求之個體的玻璃體因活性劑引起的眼部副作用的方法,其包含投予如請求項1至22中任一項的藥學組成物。
- 如請求項26的方法,其中該眼部副作用包含玻璃體混濁。
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