CN110585055B - AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用 - Google Patents

AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用 Download PDF

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CN110585055B
CN110585055B CN201910791188.9A CN201910791188A CN110585055B CN 110585055 B CN110585055 B CN 110585055B CN 201910791188 A CN201910791188 A CN 201910791188A CN 110585055 B CN110585055 B CN 110585055B
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蔡敏
严飞
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Abstract

本发明公开了AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用,所述AcSDKP作为抑制成纤维细胞繁殖的活性成分、抑制细胞外基质中胶原蛋白沉积的活性成分、维持皮肤中Ⅰ、Ⅲ型胶原蛋白比例的活性成分或者抗衰老活性成分。

Description

AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用
技术领域
本发明属于组织修复技术领域,具体来说,涉及一种AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用。
背景技术
胶原是细胞外基质中的主要成分,在人体皮肤组织中Ⅰ、Ⅲ型胶原纤维是最主要的构成部分。Ⅰ型胶原粗大,是构成皮肤的主体,Ⅲ型胶原细小、是皮肤中网状纤维的主要部分,其含量越高纤维束越细,从形态学上可见胶原纤维直径与Ⅲ型胶原的比例呈负相关,正常皮肤的Ⅰ、Ⅲ型胶原比例在发育过程中呈协调表达,Ⅰ、Ⅲ型胶原的正常比例维持着皮肤的正常组织结构。在对胎儿的无瘢痕愈合研究中证实,胎儿真皮层以Ⅲ型胶原为主,其相对含量明显高于成年皮肤,随着孕龄增大,皮肤外伤后,出现由无瘢痕——过度期瘢痕——瘢痕的过程。病理性瘢痕的形成过程中,Ⅰ型胶原纤维的增加和Ⅲ型胶原的减少都起着至关重要的作用,粗大的Ⅰ型胶原是瘢痕组织的病理基础。在病理性瘢痕的细胞外基质中,Ⅰ型胶原纤维占主要成份,瘢痕疙瘩组织中Ⅰ型胶原的合成比正常皮肤明显增加,Ⅰ:Ⅲ型胶原的比值明显增大。因此,一方面抑制Ⅰ型胶原过度表达,另一方面抑制成纤维细胞过度增殖,已经成为病理性瘢痕防治的两个关键。
1977 年首次从胎牛骨髓中提取的一种四肽 N-乙酰基-丝氨酰-天冬氨酰-赖氨酰-脯氨酸(AcSDKP),最初发现其对造血功能具有调节作用,进一步的研究发现,AcSDK 在调节胶原的合成与代谢方面也发挥着重要作用,也被认为是一种多功能生理调节因子,对抗器官纤维化有着潜在的临床应用价值。
发明内容
针对瘢痕防治的技术问题,本发明公开了一种AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用。
为实现上述目的,本发明采用的技术发方案是:
AcSDKP在增加成纤维细胞分泌Ⅲ型胶原蛋白含量的应用,所述AcSDKP作为抑制成纤维细胞繁殖的活性成分、抑制细胞外基质中胶原蛋白沉积的活性成分、维持皮肤中Ⅰ、Ⅲ型胶原蛋白比例的活性成分或者抗衰老活性成分。
优选地,所述 AcSDKP作为维持Ⅰ型和Ⅲ型胶原蛋白比例的活性成分,促进损伤性皮肤修护。
本发明还提供了增加真皮中Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为0.1-5%,还包括:0.1-5%的其它多肽、0.1-1%的pH调节剂、2-5%的保湿剂、2-5%的脂类物质和0.1-2%的1,2-己二醇。
优选地,所述的其它多肽选自六肽-9、三肽-1、棕榈酰四肽-7、棕榈酰五肽-4、棕榈酰三肽-1、棕榈酰三肽-5和三肽-1铜中的至少一种。
优选地,所述的pH调节剂选自三乙胺。
优选地,所述的保湿剂选自芦荟胶。
优选地,所述的脂类物质选自烟酰胺。
本发明所述组合物剂型为精华液、粉剂、乳剂、霜剂、凝胶、面膜或者敷料。
本发明的有益效果在于:AcSDKP能抑制成纤维细胞的过度增殖,同时还能促进皮肤中Ⅲ型胶原蛋白含量的增加,维持皮肤中Ⅰ、Ⅲ型胶原蛋白比例正常,对促进损伤性皮肤修护效果显著。
附图说明
图1为AcSDKP 对成纤维细胞的增殖影响随浓度变化图。
图2为成纤维细胞Ⅰ型和Ⅲ型胶原蛋白表达的灰度扫描图。
具体实施方式
下面结合附图对本发明的实施例进行详细说明。
实施例1
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为0.1%,还包括:0.1%的其它多肽、0.1%的pH调节剂、2%的保湿剂、2%的脂类物质和0.1%的1,2-己二醇。
所述的其它多肽选自棕榈酰四肽-7。
实施例2
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为5%,还包括: 5%的其它多肽、1%的三乙胺、5%的保湿剂、5%的脂类物质和2%的1,2-己二醇。
所述的其它多肽选自六肽-9、棕榈酰四肽-7、棕榈酰三肽-1、棕榈酰三肽-5和三肽-1铜。
实施例3
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为1%,还包括:0.6%的其它多肽、0.2%的三乙胺、3%的芦荟胶、3%的烟酰胺和0.2%的1,2-己二醇。
所述的其它多肽选自三肽-1、棕榈酰四肽-7和三肽-1铜。
实施例4
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为2%,还包括:1%的其它多肽、0.6%的三乙胺、2.5%的芦荟胶。2.5%的烟酰胺和1%的1,2-己二醇。
所述的其它多肽选自棕榈酰五肽-4和三肽-1铜。
实施例5
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为4%,还包括:2%的其它多肽、0.3%的三乙胺、3%的芦荟胶、3%的烟酰胺和0.5%的1,2-己二醇。
所述的其它多肽选自六肽-9和棕榈酰四肽-7。
实施例6
增加成纤维细胞分泌Ⅲ型胶原蛋白含量的AcSDKP组合物,AcSDKP在组合物中的质量浓度为2%,还包括:1%的其它多肽、0.2%的三乙胺、2%的芦荟胶、2%的烟酰胺和1%的1,2-己二醇。
本发明所述组合物剂型为精华液、粉剂、乳剂、霜剂、凝胶、面膜或者敷料。
细胞实验
标本:正常皮肤组织
培养基的配制:将-20℃贮存胎牛血清放在 4℃冰箱过夜,完全溶解后,取 DMEM无血清高糖培养基,加入胎牛血清使终浓度达到 10%,4℃保存备用。
原代细胞培养:
(1) 手术切取皮肤组织,立即放入4℃有DMEM培养液的离心试管中,密封后即带入超净台内操作。
(2) 将标本置于含有100 U·ml-1氨苄青霉素和100 u·ml- 1硫酸链霉素的灭菌溶液中,反复漂洗30min。
(3) 用眼科剪或手术刀仔细刮除表皮,剪弃脂肪和结缔组织。
(4) 把处理好的皮肤组织切成 0.5mm3左右大小的组织块,用含有 100 U·ml-1氨苄青霉素和 100 u·ml - 1硫酸链霉素的 PBS 再漂洗一次。
(5) 将皮肤小块浸入少量含 10%胎牛血清的 DMEM 培养液中,,置于 37℃,5%CO2培养箱中,每隔 48h 更换一次培养基,待细胞长满则用 0.25%的胰蛋白酶-EDTA 消化细胞,传代。实验选用第 2-3 代对数生长期的细胞。
检测 AcSDKP 对皮肤成纤维细胞增殖影响
选取第 2 代皮肤成纤维细胞,胰酶消化后行活细胞计数调整细胞浓度为1.5X104/m L,接种于 96 孔板,每孔 100u L。用含 10%小牛血清的 DMEM 预培养一天,改用无血清培养基培养 24h 后,换用含 AcSDKP 浓度分别为 10-7,10-8,10-9,10-10,10-11mol/l的培养基,另设空白对照,每组 6 复孔,作用 48h。用 CCK-8 试剂盒检测 AcSDKP 对细胞增殖影响。检测方法如下:
(1)吸去培养基。
(2)每孔加入 200ul 新鲜培养基及 10ul WST-8 试剂,混匀,置入培养箱内继续培养。
(3)30min 后,吸上清,450nm 处测吸光值。
结果测得不同浓度的 AcSDKP 作用 48h 后,各浓度组 D 值与对照组相比差异有统计学意义(P﹤0.05),AcSDKP 对成纤维细胞的增殖抑制作用呈剂量依赖性,从 10-7mol/l至 10-10mol/l 其抑制作用逐渐增强,其中以 10-10mol/l 浓度组抑制作用最强(见图 1)。
Ⅰ型和Ⅲ型胶原蛋白的表达
Western blot法检测, 选取第 2 代皮肤成纤维细胞,接种于 96 孔板,每孔100u L。用含 10%小牛血清的 DMEM 预培养一天,改用无血清培养基培养 24h 后,换用含AcSDKP 浓度分别为 10-7(A),10-8(B),10-9(C),10-10(D),10-11(E)mol/l的培养基,另设空白对照,每组 6 复孔,于37℃、5%CO2培养箱内孵育培养48h,弃培养液,预冷 PBS 洗后每组加入250μl新鲜配制的细胞裂解液,冰上震荡裂解30min,收集裂解细胞,4℃ 12000r/min离心15min,收集上清液,-70℃保存备用。以考马斯亮蓝R-250染色测定蛋白浓度后,以15μg/孔上样,电泳并转膜。5%牛血清白蛋白37℃封闭1h,Ⅰ型、Ⅲ型胶原单克隆抗体(1:1000 稀释)4℃孵育过夜,二抗(1:3000稀释)37℃孵育1h,BCIP/NBT(1:50稀释)显色3min。以ImageJ软件对蛋白表达条带进行灰度扫描。
以上所述实施例仅表达了本发明的具体实结果可见,与空白组相比,各浓度组成纤维细胞Ⅰ型胶原表达均明显下降(P<0.05),而Ⅲ型胶原表达均明显增强(P﹤0.05),见图2。
以上所述实施例仅表达了本发明的实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。

Claims (6)

1.AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于, AcSDKP以组合物形式应用于增加真皮分泌Ⅲ型胶原蛋白含量,AcSDKP在组合物中的质量浓度为0.1-5%,还包括:0.1-5%的其它多肽、0.1-1%的pH调节剂、2-5%的保湿剂、2-5%的脂类物质和0.1-2%的1,2-己二醇。
2.根据权利要求1所述AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于,所述的其它多肽选自六肽-9、三肽-1、棕榈酰四肽-7、棕榈酰五肽-4、棕榈酰三肽-1、棕榈酰三肽-5和三肽-1铜中的至少一种。
3.根据权利要求1所述AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于,所述的pH调节剂选自三乙胺。
4.根据权利要求1所述AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于,所述的保湿剂选自芦荟胶。
5.根据权利要求1所述AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于,所述的脂类物质选自烟酰胺。
6.根据权利要求1所述AcSDKP在制备增加成纤维细胞分泌Ⅲ型胶原蛋白含量的药物中的应用,其特征在于,所述组合物剂型为精华液、粉剂、乳剂、霜剂、凝胶、面膜或者敷料。
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