CN115340592A - 一种活性肽及其相关用途 - Google Patents
一种活性肽及其相关用途 Download PDFInfo
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- CN115340592A CN115340592A CN202111064688.6A CN202111064688A CN115340592A CN 115340592 A CN115340592 A CN 115340592A CN 202111064688 A CN202111064688 A CN 202111064688A CN 115340592 A CN115340592 A CN 115340592A
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Abstract
本申请涉及皮肤修复与改善领域,具体涉及一种活性肽及其相关用途,本发明获得的活性肽具有缓解衰老,抗氧化、抗炎性等优点,并能够有效的缓解由于紫外线照射带来的皮肤损伤。
Description
技术领域
本申请涉及皮肤修复与改善领域,具体涉及一种活性肽及其相 关用途。
背景技术
间充质干细胞(mesenchymal stem cells,MSCs)是一类来源于发 育早期中胚层的多能干细胞,是目前研究最多、最重要的成体干细胞 之一。MSCs广泛存在于全身多种组织中,并可在体外培养扩增,可 在特定条件下分化为包括神经细胞、成骨细胞、软骨细胞、肌肉细胞、 脂肪细胞在内的多种细胞,连续传代培养和冷冻保存后仍具有多向分 化潜能。与其他来源的MSCs相比,来源于脐带的MSCs具有采集方 便、无伦理争议、免疫原性低、自我更新快、倍增速度稳定和增殖能 力强等特点。因此,脐带MSCs适合用于临床研究和应用,是细胞治 疗和再生医学的首选。
根据www.ClinicalTrials.gov网站统计的数据表明,截至2018年 10月,全球已注册705项基于MSCs的临床试验,80%以上的临床试 验处于临床Ⅰ期和Ⅱ期,15%左右处于临床Ⅲ期阶段。目前的实验结 果表明:MSCs用于多种疾病的治疗是安全和有效的,这些疾病类型 包括移植物抗宿主病、脊髓损伤、自身免疫性疾病、心血管疾病、骨 及软骨损伤修复、克罗恩病、糖尿病及其并发症等。目前,全球已有 11种间充质干细胞药物获批用于上述疾病的临床治疗;然而,MSCs 在疾病治疗过程中发挥作用的机制尚不明确,仍需深入的研究和探 索。
大量的证据表明,间充质干细胞(MSC)可以通过旁分泌或自分 泌发挥治疗作用,其疗效与血管生成、免疫调节及细胞凋亡有关。 MSC分泌组即MSC所分泌的生物活性分子的总和,包括细胞因子、 趋化因子和生长因子等多种活性成分,对损伤组织的修复、再生及功能恢复等许多生理过程具有调控作用。在创伤治疗领域,基于MSC 分泌组研制的制剂极有可能成为替代MSC治疗的新疗法,具有广阔 的发展前景(王强等,间充质干细胞分泌组:创伤愈合的替代疗法, 中国生物工程杂志2017,Vol.37Issue(4):104-109),然而目前基于间充质干细胞(MSC)分泌肽的研究仍处于比较初级的阶段,目前的 研发成果难以满足消费者的多样化需求。此外,目前关于MSC分泌 组正式用于临床之前,还需要更多的体内实验和体外实验,获得商业 化前景更好的生物活性肽。
然而,自然界及肌体内发现的活性肽存在某些缺陷,比如肽段比 较长导致其在体内不稳定,并且纯化工艺和合成工艺复杂,规模化生 产成本高,透皮性差,因此,为了进一步提高成药性和提升商业化价 值,需要对相关活性肽进行结构改造。
本发明的发明人基于上述思路,在研发获得一个LQ-17活性肽的 基础上,经过结构改造又获得EQ-9活性肽。其活性与LQ-17相当, 但是由于属于截断体,生产成本可以进一步降低,取得了预料不到的 技术效果。
发明内容
本发明的目的在于提供一种生物活性多肽及其制备方法和应用。
本发明的目的可以通过以下技术方案来实现:
本发明第一方面,提供一种生物活性多肽,其氨基酸序列符合以 下通式:
R1-AA1-AA2-AA3-AA4-AA5-AA6-AA7-AA8-AA9
其中,
AA1选自E、D或是键
AA2选自S、T或是键
AA3选自E、D、K
AA4选自T、A、S、I
AA5选自R、K、E
AA6选自I、L、A
AA7选自L、I、V
AA8选自L、I、V
AA9选自Q、E、D或是键
R1选自由H、乙酰基、叔丁酰基、己酰基、2-甲基己酮基、环 己烷羧基、辛酰基、癸酰基、月桂酰、肉豆蔻酰、棕榈酰、硬脂酰、 油酰基和亚油酰基组成的组。
在一些技术方案中,所述符合上述通式的生物活性多肽,其中 AA5为R、AA6为I、AA7为L、AA8为L。
在一些实施例中,所述生物活性多肽氨基酸序列选自 ESETRILLQ、ESETKILLQ、DSDAKILIQ、DSDAKLLIQ、ETDTRILVE 、ESEARIILE、DSESKLVID、ESETEAVLQ、ESKIRILLQ、ETRILL、 SETRIL组成的组。
本发明第二方面,提供了所述生物活性多肽的制备方法,可以通 过基因工程的方法人工合成,可以从细胞中通过分离纯化的方法直接 获得,更直接通过化学合成制备。
本发明第三方面,提供了所述生物活性多肽在制备具有抗炎功能 的食品、保健品、药物或化妆品中的应用。
本发明第四方面,提供了所述生物活性多肽在制备具有抗衰老功 能的食品、保健品或药物中的应用。
本发明第五方面,提供了所述生物活性多肽在制备具有抗氧化功 能的食品、保健品或药物中的应用。
本发明第六方面,提供了一种产品,包括所述生物活性多肽或其 衍生物;所述生物活性多肽的衍生物,是指在生物活性多肽的氨基酸 侧链基团上、氨基端或羧基端进行羟基化、羧基化、羰基化、甲基化、 乙酰化、磷酸化、酯化或糖基化等修饰,得到的多肽衍生物,同时不 影响其生物学活性。
本发明的第七方面,提供了一种包括美容上或药学上有效量的至 少一种根据前述的活性肽以及至少一种赋形剂或美容上或药学上可 接受的佐剂的药物组合物。
在一些实施方案中,所述药物组合物的剂型包括膏霜、乳液、水 剂、凝胶、油剂、粉剂、泥类、蜡基类、贴类、膜类或冻干类。
在一些实施方案中,所述赋形剂包括:羟乙基纤维素、羟丙基纤 维素、羟丙基甲基纤维素、聚乙二醇、聚丙烯酰胺、聚丙烯酸、聚乙 烯醇、葡聚糖、氨、乳酸、柠檬酸、吡咯烷酮羧酸、甘油、尿素、山 梨糖醇、氨基酸、羊毛脂、矿脂。
在一些实施方案中,所述佐剂包括:增溶剂,增稠剂,胶凝剂, 柔软剂,抗氧化剂,悬浮剂,稳定剂,发泡剂,调味剂,表面活性剂, 水,离子或非离子乳化剂,填料,螯合剂,螯合剂,防腐剂,维生素, 阻滞剂,润湿剂,精油,染料,颜料。
此外,本发明的活性肽还可与常用于口服组合物或食品补充物的 赋形剂和佐剂配制,诸如且不限于食品工业中常用的脂肪成分、水性 成分、保湿剂、防腐剂、调质剂、调味剂、香料、抗氧化剂和着色剂。
本发明的第八方面,本申请的生物活性肽可与另外成分联用,所 述另外成分包括但不限于:抗氧化剂、反应性羰基物类清除剂、抗糖 化剂、抗组织胺剂、抗病毒剂、抗寄生剂、乳化剂、润肤剂、防皱剂 和/或抗老化剂等。
发明人对结构为R1-AA1-AA2-AA3-AA4-AA5-AA6-AA7-AA8-AA9的生物活性肽的功能进行了广泛研究,开展了大量实验,并确定对其 生物学活性起重要作用的结构域,最终获得活性好、生产成本低、稳 定性好的具有显著抗衰老、抗氧化以及抗炎症反应多重功效的生物活 性肽。
附图说明:
图1:鸡胚安全性实验
图2:细胞活率测定实验
图3:保护细胞免受UVA损伤能力检测实验(细胞活率指标)
图4:保护细胞免受UVA损伤能力检测实验(I型胶原蛋白含量 指标)
图5:保护细胞免受UVA损伤能力检测实验(胞内ATP含量指 标)
图6:UVA损伤修复能力检测实验(细胞活率指标)
图7:UVA损伤修复能力检测实验(MMP-9蛋白含量指标)
图8:改构后的生物活性肽UVA损伤修复实验
实施例:
定义
尽管本发明的广义范围所示的数字范围和参数近似值,但是 具体实施例中所示的数值尽可能准确的进行记载。然而,任何数 值本来就必然含有一定的误差,其是由它们各自的测量中存在的 标准偏差所致。另外,本文公开的所有范围应理解为涵盖其中包 含的任何和所有子范围。例如记载的“1至10”的范围应认为包 含最小值1和最大值10之间(包含端点)的任何和所有子范围;也 就是说,所有以最小值1或更大起始的子范围,例如1至6.1, 以及以最大值10或更小终止的子范围,例如5.5至10。另外, 任何称为“并入本文”的参考文献应理解为以其整体并入。
本申请涉及的氨基酸在此用标准三字母或单字母缩写表示。
本申请相关多肽的获得采用以下流程:
以MSC分泌组为实验材料,通过LC-MS液相色谱质谱联用 仪筛选分子量小于30kDa的多肽,结合核糖体图谱技术筛选获得 近千种生物活性肽,再根据基于机器学习和生物物理的蛋白质- 肽相互作用预测方法(HSM PPI prediction)进一步筛选获得 LQ-17,并在其基础上进行截断获得截短体VQ-13、EQ-9、LT-12, 具体序列如下:
表1:LQ-17截短体
No. | name | sequence |
1 | LQ-17 | LSDQVPDTESETRILLQ |
2 | VQ-13 | VPDTESETRILLQ |
3 | EQ-9 | ESETRILLQ |
4 | LT-12 | LSDQVPDTESET |
实施例1:安全性研究-鸡胚试验
该实验参照化妆品眼刺激性腐蚀性的鸡胚绒毛尿囊膜试验 (SN/T 2329-2009)相关标准和步骤进行,实验结果采用刺激评 分法(IS),结果为:IS=0.35,无刺激性。具体评价标准如下:
表2:
刺激评分 | 刺激性分类 |
IS<1 | 无刺激性 |
1≤IS<5 | 轻刺激性 |
5≤IS<9 | 中度刺激性 |
IS≥10 | 强刺激性/腐蚀性 |
实验结果表明:使用剂量高达500ppm的EQ-9没有安全问 题,具体参见图1。
实施例2:细胞活力检测实验
HaCaT细胞复苏传代,镜检细胞状态良好后,收集细胞,调 整细胞浓度为0.5-1.0*105个/mL,按照100μL/孔进行96孔铺板。 培养箱培养(37℃,5%CO2)至细胞融合度约80%后添加一定 浓度的受试物,孵育24h。移去上清液,使用CCK8检测试剂盒 测定细胞活率。具体结果参见图2。EQ-9促进细胞存活的能力明 显强于LQ-17。
实施例3:保护细胞免受UVA损伤能力检测实验
人包皮成纤维细胞HFF细胞及永生化人角质形成细胞 HaCaT细胞复苏传代,镜检细胞状态良好后,收集细胞,按照 2.0-2.5*104个/孔细胞密度加入96孔板。培养箱培养24h(37℃, 5%CO2),弃去培养基,加入含有一定浓度受试物的培养基,用 一定计量的UVA诱导,控制照射总量相同且介于5-15J/cm2。弃 去上清,加入含有一定受试物的培养基,培养24h后使用相应 试剂盒测定细胞活率、胶原蛋白含量和ATP含量(具体参见图 3-图5)。结果表明:
1.LQ-17和EQ-9可显著地提高细胞在紫外刺激条件下的存 活率。
2.LQ-17和EQ-9显著地提高了紫外刺激条件下受试细胞外I 型胶原蛋白的含量。
3.紫外刺激条件下,仅EQ-9能够显著增加细胞内ATP含量。
实施例4:UVA损伤修复能力测试实验
人包皮成纤维细胞HFF细胞复苏传代,镜检细胞状态良好 后,收集细胞,按照2.0-2.5*104个/孔细胞密度加入96孔板。培 养箱培养24h(37℃,5%CO2),弃去培养基,加入新鲜培养基, 用一定计量的UVA诱导,控制照射总量为5J/cm2。弃去上清, 加入含有一定受试物的培养基,培养24h后使用相应试剂盒测 定细胞活率。
实验结果表明(参见图6):EQ-9和LQ-17可以修复UVA引 起的损伤,增加细胞活力。
实施例5:MMP-9表达的定量检测实验
人包皮成纤维细胞HFF细胞复苏传代,镜检细胞状态良好 后,收集细胞,按照2.0-2.5*104个/孔细胞密度加入96孔板。培 养箱培养24h(37℃,5%CO2),弃去培养基,加入新鲜培养基, 用一定计量的UVA诱导,控制照射总量为5J/cm2。弃去上清, 加入含有一定受试物的培养基,培养24h后收集细胞培养基, 在4℃下1000g离心10min,使用相应试剂盒测定MMP-9蛋白 含量。
实验结果表明(参见图7):EQ-9和LQ-17可显着降低紫 外损伤后细胞的MMP-9表达量(MMP-9属于基质金属蛋白酶 家族,可降解细胞外胶原蛋白)。
综合以上实验结果表明:EQ-9生物活性肽是一种很有前途 的抗衰老成分,安全性好,在促进细胞生长、保护细胞免受UVA 损伤以及增加胶原蛋白I的产生方面的作用与LQ-17效果相 当,在UVA刺激后增加细胞内ATP含量方面,EQ-9显著优于 LQ-17;EQ-9生物活性肽长度比LQ-17短,却与其具有相同或 更优的活性,生产成本更低,具有巨大的商业潜力。相比之下, 其他截短体诸如:VQ-13、LT-12综合效果较差。
实施例6:EQ-9肽改造与生物活性研究
发明人针对EQ-9进行了详尽的结构和功能研究,通过改构 获得以下活性肽。
表3:改构衍生肽汇总
No. | Name | Sequence |
1 | LQ-17 | LSDQVPDTESETRILLQ |
2 | EQ-9 | ESETRILLQ |
3 | EQ-9-1 | ESETKILLQ |
4 | DQ-9 | DSDAKILIQ |
5 | DQ-9-2 | DSDAKLLIQ |
6 | EE-9-1 | ETDTRILVE |
7 | EE-9-2 | ESEARIILE |
8 | DD-9 | DSESKLVID |
9 | EQ-9-2 | ESETEAVLQ |
10 | EQ-9-3 | ESKIRILLQ |
11 | EL-6 | ETRILL |
12 | SL-6 | SETRIL |
将上述改构后的生物活性肽进行UVA损伤修复实验(实验 步骤同实施例3),结果如图8。
LQ-17截短实验结果显示,相较于VQ-13和EQ-9,LT-12 几乎完全失去了活性,表明被截去的RILLQ对于活性有重要影 响。对EQ-9进一步截短后发现,EL-6保留了较好的生物活性, 而SL-6则表现出活性的丧失,进一步证明RILL区域的重要性。 对EQ-9进行不同的点突变后,其生物活性都受到了一定程度的 影响。比较EQ-9和EQ-9-1,将R突变为K后,多肽活性出现 下降。比较EQ-9和EQ-9-2,将RIL突变为EAV后,多肽活性 完全丢失,甚至表现出抑制效果。由此可见,发明人通过功能性 实验验证了EQ-9生物活性肽的核心功能域,结合其他的具有生 物学功能的LQ-17截短体,综合判断以EQ-9效果最佳。
序列表
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<120> 一种活性肽及其相关用途
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Claims (10)
1.一种生物活性多肽,其氨基酸序列符合以下通式:
R1-AA1-AA2-AA3-AA4-AA5-AA6-AA7-AA8-AA9
其中,
AA1选自E、D或是键
AA2选自S、T或是键
AA3选自E、D、K
AA4选自T、A、S、I
AA5选自R、K、E
AA6选自I、L、A
AA7选自L、I、V
AA8选自L、I、V
AA9选自Q、E、D或是键
R1选自由H、乙酰基、叔丁酰基、己酰基、2-甲基己酮基、环己烷羧基、辛酰基、癸酰基、月桂酰、肉豆蔻酰、棕榈酰、硬脂酰、油酰基和亚油酰基组成的组。
2.权利要求1所述的生物活性肽,其中AA5为R、AA6为I、AA7为L、AA8为L。
3.权利要求1所述的生物活性肽,其氨基酸序列选自ESETRILLQ、ESETKILLQ、DSDAKILIQ、DSDAKLLIQ、ETDTRILVE、ESEARIILE、DSESKLVID、ESETEAVLQ、ESKIRILLQ、ETRILL、SETRIL组成的组。
4.权利要求1-3任一项所述的分泌肽在制备抗衰老功能的食品、化妆品、保健品或药物中的应用。
5.权利要求1-3任一项所述的分泌肽在制备抗紫外损伤功能的食品、化妆品、保健品或药物中的应用。
6.权利要求1-3任一项所述的分泌肽在制备抗炎功能的食品、化妆品、保健品或药物中的应用。
7.一种合成权利要求1-3任一项所述多肽的衍生物,其所述衍生物为在权利要求1-3所述多肽的氨基酸侧链基团上、氨基端或羧基端进行羟基化、羧基化、羰基化、甲基化、乙酰化、磷酸化、酯化或糖基化等修饰,得到的多肽衍生物,同时不影响其生物学活性。
8.一种药物组合物,其含有权利要求1-3所述的生物活性肽、权利要求6所述的生物活性肽衍生物,以及至少一种赋形剂或美容上或药学上可接受的佐剂。
9.权利要求8所述的药物组合物,所述赋形剂包括:羟乙基纤维素、羟丙基纤维素、羟丙基甲基纤维素、聚乙二醇、聚丙烯酰胺、聚丙烯酸、聚乙烯醇、葡聚糖、氨、乳酸、柠檬酸、吡咯烷酮羧酸、甘油、尿素、山梨糖醇、氨基酸、羊毛脂、矿脂。
10.权利要求8所述的药物组合物,所述佐剂包括:增溶剂,增稠剂,胶凝剂,柔软剂,抗氧化剂,悬浮剂,稳定剂,发泡剂,调味剂,表面活性剂,水,离子或非离子乳化剂,填料,螯合剂,螯合剂,防腐剂,维生素,阻滞剂,润湿剂,精油,染料,颜料。
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