CN118005728B - 一种抗光老化多肽及其应用 - Google Patents
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Abstract
本发明属于生物医药技术领域,具体公开了一种抗光老化多肽,所述抗光老化多肽具有‑Tyr‑Trp‑Leu‑Ser‑Thr‑特征片段;该特征片段位于多肽序列的氨基端、羧基端或多肽肽序中间任一位置;其中,‑Tyr‑Trp‑Leu‑Ser‑Thr‑特征片段的氨基酸组成各自独立地选自其对应的D型氨基酸,或相应的N‑甲基化氨基酸。本发明通过细胞实验发现,所述多肽能显著抑制光诱导的HaCaT人永生化表皮细胞的活性氧释放,表明本发明的化学合成多肽具有潜在的抗光老化功效;同时所述多肽具有细胞毒性弱,抗氧化的作用,在护肤品、化妆品和细胞培养基质中具有广阔的应用前景。
Description
技术领域
本发明属于生物医药技术领域,尤其涉及一种抗光老化多肽及其应用。
背景技术
根据中国香精香料化妆品工业协会发布数据表明,目前女性最关心、最热门的项目服务依次是:抗衰老保养、祛斑与增白。其中,抗衰老提及率达72.2%,从抗衰老消费人群的基本属性上可以看到,目前以女性消费群体为主,占比高达72%。随着抗衰理念逐步年轻化,抗衰消费者年龄结构向两端延伸,对抗不同等级衰老症状的需求将持续增长。皮肤衰老是指皮肤组织在内外环境的不断作用下细胞结构和功能发生退化,出现皮肤质地改变(如弹性、张力等)、色素改变、血管萎缩或增生的生理现象,通常分为内源性老化(自然老化)和外源性老化(光老化等)。
阳光对皮肤的影响是深远的,被认为占外源性皮肤老化的90%。周期性和持续暴露于紫外线(UV)辐射是导致皮肤老化的经典和关键因素,称为光老化。光老化的特征是皱纹、炎症、色素沉着、下垂和干燥。虽然UVB仅占总紫外线辐射的一小部分,但它在损伤皮肤表皮和真皮方面最活跃。一些研究报告了UVB照射会增加细胞内活性氧(ROS),例如超氧阴离子,羟基自由基和过氧化氢。ROS刺激各种信号通路并启动生物过程,包括细胞死亡、细胞衰老和炎症。目前有不少肽分子已被发现具有很好的抗氧化活性,但具有抗光老化多肽仍很少。
发明内容
有鉴于此,本发明要解决的技术问题在于提供一种抗光老化多肽,能显著抑制光诱导的HaCaT人永生化表皮细胞的活性氧释放,具有潜在的抗氧化和促进胶原蛋白再生的功效。
本发明解决其技术问题所采用的技术方案是:提供了一种抗光老化多肽,其特征在于:所述抗光老化多肽具有-Tyr-Trp-Leu-Ser-Thr-特征片段,该特征片段位于多肽序列的氨基端、羧基端或多肽肽序中间任一位置;其中,-Tyr-Trp-Leu-Ser-Thr-特征片段的氨基酸组成各自独立地选自其对应的D型氨基酸,或相应的N-甲基化氨基酸。
进一步地,所述抗光老化多肽氨基端的氨基修饰有乙酰化、甲酰化或甲磺酰化形成的酰胺键。
进一步地,所述抗光老化多肽羧基端的修饰方式为氨基酸的羧基端酰胺化或酯化。
进一步地,所述抗光老化多肽包括Tyr-Ser-Tyr-Trp-Leu-Ser-Thr-Pro-Glu-Met氨基酸序列。
进一步地,所述抗光老化多肽包括Ser-Tyr-Trp-Leu-Ser-Thr-Pro-Glu氨基酸序列。
进一步地,所述抗光老化多肽包括Asn-Asp-Tyr-Ser-Tyr-Trp-Leu-Ser-Thr-Pro氨基酸序列。
进一步地,一种抗光老化多肽在制备具有抗光老化作用的药物和/或化妆品中的应用;
和/或一种抗光老化多肽在制备用于防氧化损伤疾病的药物和/或化妆品中的应用;
和/或一种抗光老化多肽在制备抗紫外辐射、抗氧化和/或抗衰老的药物和/或化妆品中的应用。
在本发明提供的一些具体的实施方案中,将市售的多肽与Tyr-Trp-Leu-Ser-Tyr-Pro-Glu-Met-Ala-Met-NH2在抗光老化试验中均进行了HaCaT细胞UVB辐射处理,结果发现市售多肽的ROS释放显著高于未处理组别,而应用H-Tyr-Trp-Leu-Ser-Tyr-Pro-Glu-Met-Ala-Met-NH2处理后发现其具有显著抑制ROS释放活性。
进一步地,一种抗光老化多肽在制备用于细胞修复和/或促进细胞胶原生成的药物、化妆品或细胞培养基质中的应用。
在本发明提供的一些具体的实施方案中,将所述多肽添加到细胞培养基中,测定多肽处理后被UVB辐射细胞的ROS释放量,结果表明所述多肽均表现出显著抑制ROS释放的能力,表明所述多肽具有潜在抗光老化的作用。
进一步地,一种抗光老化多肽在制备用于皮肤光老化损伤的组织再生和修复的产品中的应用。
在本发明提供的一些具体的实施方案中,通过对多肽分子库的实体筛选测试,获取具有高抗光老化活性的多肽,通过光老化细胞模型的复测,筛选出具有高活性的抗光老化多肽如序列:H-Tyr-Trp-Leu-Ser-Tyr-Pro-Glu-Met-Ala-Met-NH2。
具体的,本发明中所述氧化包括并不限于活性氧(ROS),包括超氧化物(O2·-)、羟基(HO·)、过氧(ROO·)、烷氧基(RO·)和一氧化氮(NO·)。
进一步地,本发明中所述的多肽是指由氨基酸通过肽键相连构成的一类化合物,是不限制氨基酸数目的产物。
本发明中所述的抗光老化多肽为合成多肽,可按照本领域技术人员通用的化学合成方法进行合成即可。
进一步地,本发明采用固相合成的方法制备上述的抗光老化多肽。
进一步地,在本发明提供的一些具体的实施例中,根据抗光老化多肽的氨基酸序列,使用多肽合成仪合成。
本发明公开提供的一种抗光老化多肽及其应用,具有如下有益效果:
(1)本发明通过细胞实验发现,所述抗光老化多肽均能显著抑制光诱导的HaCaT人永生化表皮细胞的活性氧释放,表明本发明的化学合成多肽具有潜在的抗氧化和促进胶原蛋白再生的功效;同时所述多肽具有细胞毒性弱,抗光老化的作用,在护肤品、化妆品和细胞培养基质中具有广阔的应用前景。
(2)本发明提供的多肽可以抑制受到UVB辐射的细胞中ROS的释放,从而减少细胞损伤,并且该多肽为合成多肽,具有稳定性好,细胞毒性弱,易制备等优点,在制备具有抗光老化功效的护肤品中具有广阔的应用前景。
附图说明
图1为本发明实施例2中得到的分子5的质谱和高效液相色谱图;
图2为本发明实施例3中得到的分子6的质谱和高效液相色谱图;
图3为本发明实施例4中抗光老化实验结果图;
图4为本发明实施例5中细胞毒性实验结果图;
图5为本发明实施例6中抗光老化凋亡实验结果图。
具体实施方式
本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。下面通过具体实施例,对本发明的技术方案作进一步的具体说明。
本发明中,若非特指,所采用的原料和设备等均可从市场购得或是本领域常用的。下述实施例中的方法,如无特别说明,均为本领域的常规方法。
实施例1:
在本发明提供的一些具体的实施方案中,所述抗光老化多肽具有如分子1~分子22中任一项所示的氨基酸序列:
实施例2:合成分子5(Tyr-Trp-Leu-Ser-Thr-Pro-Glu-Met-Ala-Met-NH2)
步骤一:合成H-Tyr(tBu)-Trp(Boc)-Leu-Ser(tBu)-Thr(tBu)-Pro-Glu(OtBu)-Met-Ala-Met-MBHA树脂5
脱Fmoc保护基团:将Rink Amide MBHA Resin(0.68mmol/g,1.47g)用DCM(20mL)在多肽合成管中25℃±5℃条件下溶胀15分钟,排干溶剂,加入哌啶/DMF(体积比1/4,20mL),25℃±5℃下反应5分钟,抽干,再次加入哌啶/DMF(体积比1/4,20mL)25℃±5℃下反应10分钟。反应完成排干反应液,并用DMF(20mL)洗涤6次,排干等待下一步反应。
偶联氨基酸:将HOBT(271mg,2mmol)、HBTU(762mg,2mmol)和DIEA(516mg,4mmol)分别加入Fmoc-Met-OH(740mg,2mmol)的DMF(20mL)溶液中,冰浴下活化反应10分钟;活化完成后将活化液加入上述制备的树脂中,室温条件下反应1小时;排干反应液,用DMF(20mL)洗涤树脂6次,得到Fmoc-Met-树脂5。
重复以上操作逐个依次偶联氨基酸Fmoc-Ala-OH、Fmoc-Met-OH、Fmoc-Glu(OtBu)
-OH、Fmoc-Pro-OH、Fmoc-Thr(tBu)-OH、Fmoc-Ser(tBu)-OH、Fmoc-Leu-OH、Fmoc-Trp(Boc)-OH、Fmoc-Tyr(tBu)-OH得到Fmoc-Tyr(tBu)-Trp(Boc)-Leu-Ser(tBu)-Thr(tBu)-Pro-Glu(OtBu)-Met-Ala-Met-MBHA树脂5。
脱Fmoc保护基:向上述制备的树脂中加入哌啶/DMF(体积比1/4,20mL),25℃±5℃下反应5分钟,抽干,再次加入哌啶/DMF(体积比1/4,20mL)25℃±5℃下反应5分钟。反应完成排干反应液,并用DMF(20mL)洗涤6次,再用DCM(20mL)和MeOH(20mL)交替洗涤2次,最后用MeOH(5mL)洗涤两次;将得到的树脂在真空干燥箱中30℃下干燥3h,得到H-Tyr(tBu)-Trp(Boc)-Leu-Ser(tBu)-Thr(tBu)-Pro-Glu(OtBu)-Met-Ala-Met-MBHA树脂5(2.8g)。
步骤二:合成H-Tyr-Trp-Leu-Ser-Thr-Pro-Glu-Met-Ala-Met-NH2(分子5)
将上述制备的H-Tyr(tBu)-Trp(Boc)-Leu-Ser(tBu)-Thr(tBu)-Pro-Glu(OtBu)-Met-Ala-Met-MBHA树脂5(2.8g)和TFA:TIS:H2O(体积比95:2.5:2.5,28mL)混合溶液分别加入100mL反应瓶中,25℃±5℃条件下反应3h;反应结束后过滤,并用10mL的TFA洗涤三次,合并溶液并浓缩到5mL左右;将浓缩液滴加入50mL的甲基叔丁基醚中,在冰浴下沉降30分钟,离心,并用甲基叔丁基醚(30mL)洗涤3次,将固体放入真空干燥箱中干燥过夜,得到白色固体1.1g,直接通过Pre-HPLC纯化得到纯化液,浓缩并冻干,得到白色固体104.7mg,纯度98.6%。
利用高效液相色谱对实施例1中得到的分子5进行分析,得到其HPLC谱图如图1所示,色谱条件如下:
仪器型号为Agilent 1200,色谱桂为Sepax HP-C18,4.6*50mm*3um
flow:1ml/min,buffer A:0.1%TFA-H2O,buffer B:ACN,B%:5%(4min)→90%→(5min)90%→(5.01)5%→7min→5%。
利用质谱对实施例1中得到的分子5进行分析,得到MS(ESI):m/z(M+2H+)/2=614.5、M+H+=1227.6、M+Na+=1249.8、(M+Na++H+)/2=625.5;
实施例3:合成分子6(Tyr-Trp-Leu-Ser-Thr-Pro-Glu-met-Pro-Ala-NH2)
通过实施例2方法合成分子6,得到白色固体104.7mg,纯度98.7%。
利用质谱对分子6进行分析,得到(M+2H+)/2=597.3,M+H+=1193.8,(M+Na++H+)/2=608.4,(M+2Na+)/2=619.3。
碳端末端为酰胺的化合物(如分子1~分子22)的制备方法均与实施例2制备方法一致。
实施例4:抗光老化功效测试
取对数生长HaCaT细胞接种到黑边透明底的96孔板中,达到每孔3×104个细胞,在完全培养基(4.5ml FBS(Sigma-F8318)+45ml MEM基础培养基(gibco-C11095500BT)+0.5ml青霉素-链霉素溶液(Biosharp-BL505A))环境下置于37℃、5%CO2浓度的二氧化碳培养箱中培养24h。弃去旧培养基,每孔加入100μL的PBS,将板移至UVB设备下方辐照105mJ后,Control组(即空白未处理),模型组(UVB辐射组)弃去液体更换空白基础培养基,待辐射完成后其他孔加入含梯度浓度分子5、6的基础培养基(MEM基础培养基(gibco-C11095500BT))培养24h,分子5的浓度从3.12μM到200μM稀释6个浓度,分子6的浓度从0.78μM到100μM稀释8个浓度,阳性参照药为棕榈酰五肽-4。预先配置1:1000稀释DCFH-DA,弃去液体,装载探针后,将96孔板放入培养箱中,孵育40min;PBS清洗4次,每次3min(振荡仪中低速振荡);换上新PBS后用酶标仪检测495nm处信号值,。结果如图所示,在测试浓度下,多肽分子5、6显著抑制UVB诱导的ROS释放(P<0.01),表明所述多肽具有与棕榈酰五肽-4相当的抗光老化功效。
实施例5:细胞毒性测试
取对数生长HaCaT细胞接种到黑边透明底的96孔板中,达到每孔3×104个细胞,在完全培养基(4.5ml FBS(Sigma-F8318)+45ml MEM基础培养基(gibco-C11095500BT)+0.5ml青霉素-链霉素溶液(Biosharp-BL505A))环境下置于37℃、5%CO2浓度的二氧化碳培养箱中培养24h。弃去旧培养基,每孔加入100μL的PBS,Control组(即空白未处理),其他孔加入含化学合成多肽分子5、6的基础培养基(MEM基础培养基(gibco-C11095500BT)),多肽分子5剂量从0.32μM到200μM稀释5个浓度,分子6的剂量从0.012μM到1mM稀释8个浓度,培养24h。取出待检测的96孔板,室温平衡10min;每孔加入100μL的celltiter溶液,振荡器振荡2min,振荡完成后静置10min;用酶标仪检测,得到细胞活性测试结果如图所示,多肽分子5、6在200μM下对细胞活力无影响,证明其在实施例3中的抑制ROS结果并非由细胞毒性导致,表明多肽分子5、6的安全性较高。
实施例6:光老化凋亡实验
取对数生长HaCaT细胞接种到黑边透明底的孔板中,达到每孔3×104个细胞,在完全培养基(4.5ml FBS(Sigma-F8318)+45ml MEM基础培养基(gibco-C11095500BT)+0.5ml青霉素-链霉素溶液(Biosharp-BL505A))环境下置于37℃、5%CO2浓度的二氧化碳培养箱中培养24h。弃去旧培养基,每孔加入100μL的PBS,将板移至UVB设备下方辐照105mJ后,Control组(即空白未处理),模型组(UVB辐射组)弃去液体更换空白基础培养基,待辐射后其他孔加入含多肽分子5、6的基础培养基(MEM基础培养基(gibco-C11095500BT)),分子5的剂量0.064μM到200μM稀释6个浓度,分子6的剂量从3μM到200μM稀释7个浓度,培养24h。取出待检测的96孔板,室温平衡10min;每孔加入100μL的celltiter溶液,振荡器振荡2min,振荡完成后静置10min;用酶标仪检测,得到细胞活性测试结果。如图所示,UVB诱导会产生细胞凋亡,但多肽分子5、6在测试浓度下无加剧凋亡作用,证明其在实施例3中的抑制ROS结果并非由细胞凋亡导致,同时佐证实施例4中多肽分子5、6安全性较高的结论。
通过以上实施例数据得出,多肽分子5、6具有可比拟棕榈酰五肽的抗氧化作用、还兼具低毒、对损伤细胞无诱导凋亡的效果。此类分子可用于细胞抗光老化的药品或化妆品、细胞修复的药品或化妆品(护肤品)或细胞培养基质、药品或化妆品(护肤品)或细胞培养基质和皮肤光老化损伤的组织再生和修复方面的产品中的应用。
本领域技术人员应该理解,尽管参照上述实施例对本发明进行了具体的描述,但是本发明并不限于这些具体的实施例。基于本发明所教导的方法和技术方案,在不背离本发明的精神的前提下,本领域技术人员能够进行适当的修改或改进,由此所得的等价实施方案都在本发明的保护范围内。
Claims (2)
1.一种抗光老化多肽,其特征在于:所述抗光老化多肽的氨基酸序列为H-Tyr-Trp-Leu-Ser-Thr-Pro-Glu-Met-Ala-Met-NH2;
H-Tyr-Trp-Leu-Ser-Thr-Pro-Glu-D-Met-Pro-Ala-NH2中的任意一个。
2.一种如权利要求1所述的抗光老化多肽在制备具有抗光老化作用的药物和/或化妆品中的应用。
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