CN105939707A - 含有溶血卵磷脂和二氢卟吩e6的缀合物的用于治疗痤疮的脂质体组合物 - Google Patents
含有溶血卵磷脂和二氢卟吩e6的缀合物的用于治疗痤疮的脂质体组合物 Download PDFInfo
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Abstract
本发明涉及一种用于治疗痤疮的脂质体组合物,所述组合物包含0.001至5重量%的溶血卵磷脂和二氢卟吩e6的缀合物、1至10重量%的蔗糖月桂酸酯、0.1至5重量%的硬脂酰谷氨酸钠、1至10重量%的聚乙二醇‑5油菜籽甾醇、1至20重量%的中链甘油三酸酯、1至10重量%的植物油、0.1至5重量%的脱氧胆酸钠、3至10重量%的甘油及余量的水,本发明的脂质体组合物对治疗痤疮非常有效。
Description
技术领域
本发明涉及一种含有溶血卵磷脂和二氢卟吩e6(chlorin e6)的缀合物的用于治疗痤疮的脂质体组合物,更详细地,涉及一种用于治疗痤疮的脂质体组合物及包含其的皮肤护理组合物,所述用于治疗痤疮的脂质体组合物包含0.001至5重量%的溶血卵磷脂(lysophosphatidylcholine,LPC)和二氢卟吩e6的缀合物、1至10重量%的蔗糖月桂酸酯(sucrose laurate)、0.1至5重量%的硬脂酰谷氨酸钠(sodium stearoylglutamate)、1至10重量%的聚乙二醇-5油菜籽甾醇(polyethylene glycol-5rapeseedsterol)、1至20重量%的中链甘油三酸酯(medium-chain triglyceride,MCT)、1至10重量%的植物油、0.1至5重量%的脱氧胆酸钠(sodium deoxycholate)、3至10重量%的甘油及余量的水。
背景技术
光动力疗法(photodynamic therapy,PDT)亦称光化学疗法(photochemotherapy),是一种利用光敏感性物质(photo-sensitizer)而不通过手术治疗癌症等不治之症、或治疗痤疮等的皮肤疾病的技术。从二十世纪初开始对这种光动力疗法(PDT)进行了广泛的研究,目前,在癌症的诊断和治疗、自体骨髓移植、抗生素、艾滋病的治疗、皮肤移植手术或关节炎等的治疗中,为了增加免疫性而使用,从而其应用范围正逐步扩大。尤其,用于治疗癌症的光动力疗法是一种利用以下原理的治疗方法:将对于光显示出敏感反应的物质,即光敏感性物质施用于体内,并从外部照射光时,通过体内的丰富的氧气和外部光的化学反应而产生单线态氧(singlet oxygen)或自由基(free radical),这种单线态氧或自由基诱导各种病变部位或癌细胞的细胞死亡而破坏癌细胞。
光动力疗法中使用的光敏感性物质已知有卟啉(porphyrin)衍生物、二氢卟酚(chlorin)、菌绿素(bacteriochlorin)、酞菁染料(phthalocyanine)及5-氨基乙酰丙酸(5-aminolevulinic acid)衍生物等。环状四吡咯衍生物作为光敏感性物质,不仅选择性地累积在癌细胞中,而且在化合物的特征方面,显示出荧光或磷光,因此,具有能够用作肿瘤的早期诊断试剂的特征。此外,使用环状四吡咯的内部结合有金属的金属卟啉(metalloporphyrin)时,根据结合的金属种类而显示出各种特性,因此,利用将金属卟啉作为磁共振成像(magnetic resonance imaging,MRI)对比剂(contrasting agent)的诊断技术还可以应用于诸如癌细胞的肿瘤细胞的早期诊断中。作为最广为人知的光敏感性物质的5-氨基乙酰丙酸衍生物具有使用方法简单且分子量小而比较容易渗透皮肤,并且副作用少而安全的优点。此外,受到关注的光敏感性物质中的一种是作为二氢卟酚系列光敏感性物质的二氢卟吩e6。作为利用二氢卟吩e6的组合物的例子,在韩国专利申请第10-2006-0136610号中公开一种包含二氢卟吩e6或其药学上可接受的盐作为有效成分的用于口服给药的抗肿瘤组合物。
如上所述,虽然提出了应用于作为光动力疗法的适应症中的一种的痤疮等的皮肤病的治疗中,但是到目前为止,还没有关于这方面的成功使用案例。
[在先技术文献]
[专利文献]
韩国专利申请第10-2006-0136610号
发明内容
要解决的技术问题
因此,本发明要解决的技术问题是提供一种将作为光敏感性物质的二氢卟吩e6有效地传递到细胞内,能够对痤疮治疗显示出优异效果的组合物。
技术方案
为了实现上述目的,本发明提供一种用于治疗痤疮的脂质体组合物,所述组合物包含0.001至5重量%的溶血卵磷脂和二氢卟吩e6的缀合物、1至10重量%的蔗糖月桂酸酯、0.1至5重量%的硬脂酰谷氨酸钠、1至10重量%的聚乙二醇-5油菜籽甾醇、1至20重量%的中链甘油三酸酯、1至10重量%的植物油、0.1至5重量%的脱氧胆酸钠、3至10重量%的甘油及余量的水。
此外,提供一种包含本发明的所述脂质体组合物的皮肤护理组合物。
以下,对本发明进行详细说明。
本发明中,二氢卟吩e6与溶血卵磷脂形成缀合物。通过将二氢卟吩e6与溶血卵磷脂结合,从而能够将二氢卟吩e6有效地传递到细胞内,并且有助于脂质体的形成。溶血卵磷脂和二氢卟吩e6的缀合物的形成,例如可以通过在催化剂二环己基碳二亚胺(DCC)和二甲基氨基吡啶(DMAP)的存在下,将溶血卵磷脂和二氢卟吩e6进行反应而得到,并将结果表示在下述反应式1中。
所述反应式1中,R为C6-C22的饱和或不饱和脂肪酸链。在下文中,将溶血卵磷脂和二氢卟吩e6的缀合物简称为“LPC-Ce6”。
本发明的脂质体组合物包含0.001至5重量%的LPC-Ce6,优选包含0.01至3重量%,更优选包含0.1至2重量%。本发明中,如果包含的LPC-Ce6的量少于0.001重量%,则由二氢卟吩e6带来的治疗痤疮的效果会微弱,如果包含的LPC-Ce6的量超过5重量%,则在形成脂质体方面会存在问题。
本发明的脂质体组合物包含1至10重量%的作为非离子型表面活性剂的蔗糖月桂酸酯,优选包含1.5至8重量%,更优选包含2至6重量%。本发明中,如果包含的蔗糖月桂酸酯的量少于1重量%或超过10重量%,则在形成脂质体方面会存在问题。
本发明的脂质体组合物包含0.1至5重量%的硬脂酰谷氨酸钠,优选包含0.2至4重量%,更优选包含0.5至2重量%。本发明中,硬脂酰谷氨酸钠能够提高脂质体与皮肤的亲和力。本发明中,如果包含的硬脂酰谷氨酸钠的量少于0.1重量%,则在脂质体的皮肤亲和力方面会存在问题,如果包含的硬脂酰谷氨酸钠的量超过5重量%,则在形成脂质体方面会存在问题。
本发明的脂质体组合物包含1至10重量%的聚乙二醇-5油菜籽甾醇,优选包含1.5至8重量%,更优选包含2至6重量%。本发明中,聚乙二醇-5油菜籽甾醇有助于脂质体囊泡(vesicle)的形成,并且对脂质体双层膜赋予稳定性。本发明中,如果包含的聚乙二醇-5油菜籽甾醇的量少于1重量%,则形成脂质体时,由聚乙二醇-5油菜籽甾醇带来的效果会微弱,如果包含的聚乙二醇-5油菜籽甾醇的量超过10重量%,则脂质体会不稳定。
本发明的脂质体组合物包含1至20重量%的中链甘油三酸酯,优选包含3至15重量%,更优选包含5至12重量%。中链甘油三酸酯作为甘油的6-12个碳原子的脂肪酸酯,在本发明中有助于脂质体渗透皮肤。本发明中,如果包含的中链甘油三酸酯的量少于1重量%,则在脂质体渗透皮肤方面会存在问题,如果包含的中链甘油三酸酯的量超过20重量%,则在形成脂质体方面会存在问题。
本发明的脂质体组合物包含1至10重量%的植物油,优选包含1.5至8重量%,更优选包含2至6重量%。本发明中,植物油起到帮助脂质体渗透皮肤的作用,例如,可以使用葵花籽油、橄榄油、山茶油、澳洲坚果油、蓖麻油、荷荷巴油、扁桃仁油、杏仁油、绿茶油、白芒花籽(meadowfoam seed)油、阿甘油(argan oil)或它们的混合物,但并不限定于此。本发明中,如果包含的植物油的量少于1重量%,则在脂质体渗透皮肤方面会存在问题,如果包含的植物油的量超过10重量%,则在形成脂质体方面会存在问题。
本发明的脂质体组合物包含0.1至5重量%的脱氧胆酸钠,优选包含0.2至3重量%,更优选包含0.3至2重量%。本发明中,脱氧胆酸钠使得脂质体柔韧,从而使脂质在角质细胞间容易通过。本发明中,如果包含的脱氧胆酸钠的量少于0.1重量%,则在脂质体渗透皮肤方面会存在问题,如果包含的脱氧胆酸钠的量超过5重量%,则脂质体会不稳定。
本发明的脂质体组合物包含作为溶剂的甘油及水。本发明的脂质体组合物包含3至10重量%的甘油,优选包含5至9重量%,更优选包含6至8重量%。本发明中,例如包含25至92.999重量%或56至82.1重量%的水。
本发明的脂质体组合物根据需要,可以进一步包含赋形剂、甜味剂及香料等的添加剂。
本发明中,脂质体的颗粒直径优选为100至300nm。
根据本发明的另一方面,提供一种包含本发明的脂质体组合物的皮肤护理组合物。本发明中,皮肤护理组合物可以列举如化妆水、洗剂、润肤露、乳霜及精华等,但并不限定于此。皮肤护理组合物中,优选包含1至30重量%的根据本发明的脂质体组合物。本发明中,如果皮肤护理组合物包含的脂质体组合物的量少于1重量%,则由二氢卟吩e6带来的治疗痤疮的效果会甚微,即使包含的二氢卟吩e6的量超过30重量%,也难以期待治疗痤疮的效果与添加二氢卟吩e6的量成比例而增加,因此对于经济上来说不优选。
有益效果
本发明的脂质体组合物能够将二氢卟吩e6稳定有效率地传递到皮肤内,从而有效地治疗痤疮。
附图说明
图1为使用Photal ELS-Z测定本发明的脂质体的颗粒直径大小的结果。
图2为使用Photal ELS-Z测定本发明的脂质体的ZETA电势的结果。
图3为测定本发明的脂质体的稳定度的结果。
图4为使用冷冻电子显微镜放大拍摄本发明的脂质体组合物的照片。
图5为示出将本发明的脂质体组合物的治疗痤疮的效果与发光二极管光疗(LEDphototherapy)比较的图表。
图6为拍摄本发明的脂质体组合物的治疗痤疮的效果的照片,左侧为治疗前的照片,右侧为治疗后经过两周后的照片。
具体实施方式
以下,将通过实施例具体地说明本发明。然而,实施例仅是为了帮助理解本发明而例示的,本发明的范围并不限定于实施例。
制备例:LPC-Ce6的制备
将10mg的溶血卵磷脂(L-α-lysophosphatidylcholine)溶解于10ml的无水二氯甲烷(anhydrous dichloromethane)中,并且将10mg的二氢卟吩e6(Ce6)、作为催化剂的5.35mg的N,N′-二环己基碳二亚胺(N,N′-dicyclohexylcarbodiimide,DCC)及5.35mg的4-二甲基氨基吡啶(4-dimethylaminopyridine:DMAP)加入到10ml的无水二氯甲烷中,并搅拌4小时。然后,将溶解于无水二氯甲烷中的二氢卟吩e6溶液与溶解于无水二氯甲烷中的溶血卵磷脂溶液混合,并且在常温下反应48小时。反应后,在40℃的蒸发(evapration)下,蒸发无水二氯甲烷30分钟后,在4℃下冷藏制备的缀合物直到使用。
[反应式2]
实施例1:含有LPC-Ce6的脂质体组合物的制备
在80℃下,溶解蔗糖月桂酸酯、聚乙二醇-5油菜籽甾醇、葵花籽油及中链甘油三酸酯。然后将甘油、精制水、脱氧胆酸钠及硬脂酰谷氨酸钠加热至80℃以上,并且投入到油相中后,在100℃下湿润1小时。将所述混合物冷却至40℃后,投入LPC-Ce6,并进行乳化后,在1,000巴下连续通过高压微乳化器3次,然后进行冷却和脱气,从而获得脂质体组合物。
表1
比较例:含有LPC-Ce6的乳剂的制备
按照下述表2中的组成成分,将各成分加入到容器中后,在80℃的温度下使其溶解。然后,利用高速搅拌机(homo-mixer)混合5分钟后,进行冷却、脱气,从而获得乳剂。
表2
实施例2:含有脂质体的化妆水的制备
根据下述表3中的组成成分,制备含有本分明的脂质体的化妆水。
表3
实施例3:含有脂质体的洗剂的制备
根据下述表4中的组成成分,制备含有本分明的脂质体的洗剂。
表4
实施例4:含有脂质体的润肤露的制备
根据下述表5中的组成成分,制备含有本分明的脂质体的润肤露。
表5
实施例5:含有脂质体的乳霜的制备
根据下述表6中的组成成分,制备含有本分明的脂质体的乳霜。
表6
实施例6:含有脂质体的精华的制备
根据下述表7中的组成成分,制备含有本分明的脂质体的精华。
表7
实验例1:脂质体的粒子分布测定
利用Photal ELS-Z测定实施例1中制备的脂质体的颗粒分布,并在图1中示出。进行测定的结果,可以知道,平均颗粒大小为153.9nm。
实验例2:脂质体的稳定性测定
为了测定实施例1中制备的脂质体的稳定度,利用Photal ELS-Z测定ZETA电势,并将其结果表示在图2中。进行测定的结果,可以知道,颗粒的电位为-57.53mV,是稳定的。
实验例3:脂质体的稳定度测定
为了测定实施例1中制备的脂质体的稳定度,使用稳定性分析仪(Turbiscan)进行测定的结果,可以知道脂质体是稳定的(图3)。
实验例4:脂质体颗粒拍摄
拍摄实施例1中制备的脂质体。由于脂质体颗粒大小过于微细,因此不能通过通常的光学显微镜进行测定。因此利用冷冻电子显微镜(JEM 1010,日本电子株式会社(JEOL),日本)进行拍摄(图4)。从图4中可知,脂质体以均匀的大小很好地形成。
实验例5:促进经皮吸收的效果实验
利用8周龄左右的雌性无毛豚鼠(strain IAF/HA-hrBR)。切取豚鼠的腹部皮肤,并安装到弗朗兹型扩散池(Franz-type diffusion cell)(精密仪器实验室(Lab FineInstruments),韩国)中而进行实验。在弗朗兹型扩散池的接收容器(5ml)中加入50mM的磷酸盐缓冲液(pH7.4,0.1M氯化钠)后,在32℃,600rpm下,进行混合并分散,并且将50μl的实施例1的脂质体及比较例的乳剂加入到供体(donor)容器中。根据预定的时间进行吸收及扩散,并且使得发生吸收及扩散的皮肤达到0.64cm2。完成有效成分的吸收扩散后,用干燥的拭净纸(kimwipes)或10ml的乙醇清洗因没有被吸收而留在皮肤上的乳化物,并且使用尖式均质器(tip-type homogenizer)均化吸收扩散有有效成分的皮肤,然后使用4ml的二氯甲烷提取吸收到皮肤内部的二氢卟吩e6的量。之后,用0.45μm的尼龙膜(nylon membrane)过滤膜过滤提取液,并且在以下条件下,用高效液相色谱法测定含量之后,将其结果表示在表8中。
表8
从所述表8中可以看出,本发明的脂质体经皮吸收与一般的乳剂相比优异。
实验例6:痤疮治疗效果测定
将20名具有严重痤疮的10岁年龄段及20岁年龄段的男女作为对象,以每组10名分为两个组,然后,对一组中涂布实施例3的洗剂,所述涂布每日进行三次。对另一组进行发光二极管光疗(LED phototherpy)。治疗开始后的2周、4周及6周时,用肉眼评价治疗效果,并且将痤疮程度最严重的情况设为5,没有痤疮的情况设为0,从而分成等级进行评价后,将其结果表示在图5中。图6为使用含有本发明的二氢卟吩e6的脂质体来进行治疗的组的实验对象中的一名患者的治疗前和治疗2周后的拍摄照片。
从图5及6中可以看出,含有本发明的二氢卟吩e6的脂质体对治疗痤疮非常有效。
Claims (7)
1.一种用于治疗痤疮的脂质体组合物,其特征在于,所述组合物包含:0.001至5重量%的溶血卵磷脂和二氢卟吩e6的缀合物、1至10重量%的蔗糖月桂酸酯、0.1至5重量%的硬脂酰谷氨酸钠、1至10重量%的聚乙二醇-5油菜籽甾醇、1至20重量%的中链甘油三酸酯、1至10重量%的植物油、0.1至5重量%的脱氧胆酸钠、3至10重量%的甘油及余量的水。
2.根据权利要求1所述的用于治疗痤疮的脂质体组合物,其特征在于,所述溶血卵磷脂和二氢卟吩e6的缀合物为下述化学式1:
所述化学式1中,R为C6-C22的脂肪酸链。
3.根据权利要求1所述的用于治疗痤疮的脂质体组合物,其特征在于,所述植物油选自葵花籽油、橄榄油、山茶油、澳洲坚果油、蓖麻油、荷荷巴油、扁桃仁油、杏仁油、绿茶油、白芒花籽油、阿甘油,以及它们的混合物。
4.根据权利要求1所述的用于治疗痤疮的脂质体组合物,其特征在于,所述组合物包含0.1至2重量%的溶血卵磷脂和二氢卟吩e6的缀合物、2至6重量%的蔗糖月桂酸酯、0.5至2重量%的硬脂酰谷氨酸钠、2至6重量%的聚乙二醇-5油菜籽甾醇、5至12重量%的中链甘油三酸酯、2至6重量%的植物油、0.3至2重量%的脱氧胆酸钠、6至8重量%的甘油及56至82.1重量%的水。
5.根据权利要求1所述的用于治疗痤疮的脂质体组合物,其特征在于,脂质体直径的大小为100至300nm。
6.一种皮肤护理组合物,其特征在于,所述组合物包含权利要求1至5中任一项所述的用于治疗痤疮的脂质体组合物。
7.根据权利要求6所述的皮肤护理组合物,其特征在于,所述组合物包含1至30重量%的用于治疗痤疮的脂质体组合物。
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