CN117065074B - 一种含pdrn的复合静电纺丝纳米纤维敷料及其制备方法 - Google Patents
一种含pdrn的复合静电纺丝纳米纤维敷料及其制备方法 Download PDFInfo
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Abstract
本发明属于生物敷料技术领域,涉及一种含PDRN的复合静电纺丝纳米纤维敷料及其制备方法。所述方法,包括S1、将海藻酸钠和羧甲基纤维素混合制备静电纺丝纳米纤维溶液;S2、将静电纺丝纳米纤维溶液在底布上形成第一层纤维膜;S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶进行混合,获得混合液;S4、将混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料。本发明方法中,PDRN和干细胞外泌体相结合,能够起到积极的抗炎修复作用,海藻酸钠和羧甲基纤维素能够起到保湿作用,为皮肤创面的修复提供湿润的环境,再利用电纺法进行纺丝,将上述原料固定在底布上,能够大大提升皮肤修复效果。
Description
技术领域
本发明属于生物敷料技术领域,具体涉及一种含PDRN的复合静电纺丝纳米纤维敷料及其制备方法。
背景技术
医用敷料,是包伤的用品,用以覆盖疮、伤口或其他损害的医用材料。医用敷料包括天然纱布、合成纤维类敷料、多聚膜类敷料、发泡多聚类敷料、水胶体类敷料、藻酸盐敷料。随着对创面愈合过程的病理生理的深入研究,人们对创面愈合过程的理解也越来越深刻,从而导致了医用创面敷料的不断改进与发展。
PDRN,又称多聚脱氧核糖核苷酸,是从三文鱼生殖细胞中提取的特定规格的DNA片段,PDRN与人体构成最相似,可以促进人体细胞再生,迅速恢复伤口,并减少疤痕生成,也可减轻痛症。
因此,将PDRN应用于敷料中,提升皮肤修复效果,成为人们亟待解决的问题。
发明内容
本发明的主要目的在于提供一种含PDRN的复合静电纺丝纳米纤维敷料及其制备方法,以克服现有技术中的不足。
为实现前述发明目的,本发明采用的技术方案包括:
根据本发明实施例的第一方面,提供了一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素混合制备静电纺丝纳米纤维溶液,备用;
S2、将静电纺丝纳米纤维溶液在底布上形成第一层纤维膜;
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶进行混合,搅拌均匀后获得混合液;
S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料。
进一步的,步骤S1中,所述海藻酸钠和羧甲基纤维素的质量比为1:1。
进一步的,所述底布为无纺布。
进一步的,所述步骤S2中,采用电纺法将静电纺丝纳米纤维溶液在底布上形成第一层纤维膜。
进一步的,所述电纺法的纺丝条件为:室温下纺丝,纺丝电压为1-2kV。
进一步的,所述步骤S3中,PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照0.1-2:0.01-0.1:0.1-1:0.05-2:0.01-1的质量比进行混合。
进一步的,所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为30-35℃,同时施加频率为10-20kHz的超声波进行处理。
进一步的,步骤S4中,所述电纺的条件为:30-40℃下纺丝,纺丝电压为2-2.5kV。
根据本发明实施例的第二方面,提供了一种由任一项上述方法制备的复合静电纺丝纳米纤维敷料,包括底布、设置在底布上的保湿层、以及设置在保湿层上的功能层,制备所述保湿层的原料包括海藻酸钠和羧甲基纤维素,制备功能层的原料包括PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶。
根据本发明实施例的第三方面,提供了一种由任一项上述方法制备的复合静电纺丝纳米纤维敷料,或上述的复合静电纺丝纳米纤维敷料在伤口修复中的应用。
与现有技术相比,本发明的优点包括:
本发明提供一种含PDRN的复合静电纺丝纳米纤维敷料及其制备方法,所述方法中的原料包含PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶、海藻酸钠和羧甲基纤维素,其中,PDRN和干细胞外泌体相结合,能够起到积极的抗炎修复作用,海藻酸钠和羧甲基纤维素能够起到保湿作用,为皮肤创面的修复提供湿润的环境,再利用电纺法进行纺丝,将上述原料固定在底布上,能够大大提升皮肤修复效果。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将对本发明的技术方案进行详细的描述。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做出创造性劳动的前提下所得到的所有其它实施方式,都属于本发明所保护的范围。
本发明实施例提供了一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素按照1:1的质量比混合制备静电纺丝纳米纤维溶液,备用;
S2、采用电纺法将静电纺丝纳米纤维溶液在无纺布上形成第一层纤维膜;所述电纺法的条件为室温下纺丝,纺丝电压为1-2kV。
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照0.1-2:0.01-0.1:0.1-1:0.05-2:0.01-1的质量比进行混合,搅拌均匀后获得混合液;
S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料;所述电纺的条件为:30-40℃下纺丝,纺丝电压为2-2.5kV。
优选的,所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为30-35℃,同时施加频率为10-20kHz的超声波进行处理。
根据本发明实施例的第二方面,提供了一种由任一项上述方法制备的复合静电纺丝纳米纤维敷料,包括底布、设置在底布上的保湿层、以及设置在保湿层上的功能层,制备所述保湿层的原料包括海藻酸钠和羧甲基纤维素,制备功能层的原料包括PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶。
根据本发明实施例的第三方面,提供了一种由任一项上述方法制备的复合静电纺丝纳米纤维敷料,或上述的复合静电纺丝纳米纤维敷料在伤口修复中的应用。
实施例1
本实施例提供了一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素按照1:1的质量比混合制备静电纺丝纳米纤维溶液,备用;
S2、采用电纺法将静电纺丝纳米纤维溶液在无纺布上形成第一层纤维膜;所述电纺法的条件为室温下纺丝,纺丝电压为1-2kV。
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照0.1:0.01:0.1:0.05:0.01的质量比进行混合,搅拌均匀后获得混合液;
S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料;所述电纺的条件为:30℃下纺丝,纺丝电压为2kV。
优选的,所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为30℃,同时施加频率为10kHz的超声波进行处理。
实施例2
本实施例提供了一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素按照1:1的质量比混合制备静电纺丝纳米纤维溶液,备用;
S2、采用电纺法将静电纺丝纳米纤维溶液在无纺布上形成第一层纤维膜;所述电纺法的条件为室温下纺丝,纺丝电压为2kV。
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照2:0.1:1:2:1的质量比进行混合,搅拌均匀后获得混合液;
S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料;所述电纺的条件为:40℃下纺丝,纺丝电压为2.5kV。
优选的,所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为35℃,同时施加频率为20kHz的超声波进行处理。
实施例3
本实施例提供了一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素按照1:1的质量比混合制备静电纺丝纳米纤维溶液,备用;
S2、采用电纺法将静电纺丝纳米纤维溶液在无纺布上形成第一层纤维膜;所述电纺法的条件为室温下纺丝,纺丝电压为1.5kV。
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照1.05:0.055:0.55:1.025:0.5的质量比进行混合,搅拌均匀后获得混合液;
S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料;所述电纺的条件为:35℃下纺丝,纺丝电压为2.25kV。
优选的,所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为32.5℃,同时施加频率为15kHz的超声波进行处理。
实验1
以实施例1、实施例2、实施例3为实验组,设置对照组,其中对照组1-3为实施例1-3不添加PDRN;对照组4-6为实施例1-3不添加干细胞外泌体;对照组7-9为实施例1-3不添加PDRN和干细胞外泌体。
具体方法:
1.取SD大鼠60只,随机分为12组,三组为实验组,其余为对照组,在大鼠背部制备2×2cm2全层皮肤缺损模型;
2.对皮肤缺损模型按实施例1-3、对照组1-9的方法对皮肤进行修复,分别记录3天、7天后的疤痕,记录结果如表1所示:
表1、不同处理方式下疤痕修复结果。
上述实验结果说明,分别添加PDRN、干细胞外泌体能够促进皮肤的修复,而同时添加PDRN和干细胞外泌体,能够发挥协同作用,有效促进修复效果。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。
Claims (7)
1.一种含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于,包括以下步骤:
S1、将海藻酸钠和羧甲基纤维素混合制备静电纺丝纳米纤维溶液,所述海藻酸钠和羧甲基纤维素的质量比为1:1,备用;
S2、将静电纺丝纳米纤维溶液在底布上形成第一层纤维膜;
S3、将PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶按照0.1-2:0.01-0.1:0.1-1:0.05-2:0.01-1的质量比进行混合,搅拌均匀后获得混合液;S4、将步骤S3获得的混合液静电纺于第一层纤维膜上,形成所述含PDRN的复合静电纺丝纳米纤维敷料。
2.根据权利要求1所述含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于:所述底布为无纺布。
3.根据权利要求1所述含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于:所述步骤S2中,采用电纺法将静电纺丝纳米纤维溶液在底布上形成第一层纤维膜。
4.根据权利要求3所述含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于,所述电纺法的纺丝条件为:室温下纺丝,纺丝电压为1-2kV。
5.根据权利要求1所述含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于:所述步骤S3包括先将PDRN和干细胞外泌体混合,制得第一混合物;将透明质酸钠、聚己内酯微球和明胶混合,制得第二混合物;将第一混合物加入到第二混合物中,期间,对第二混合物进行加热,加热温度为30-35℃,同时施加频率为10-20kHz的超声波进行处理。
6.根据权利要求1所述含PDRN的复合静电纺丝纳米纤维敷料的制备方法,其特征在于,步骤S4中,所述电纺的条件为:30-40℃下纺丝,纺丝电压为2-2.5kV。
7.一种如权利要求1-6中任一项所述方法制备的复合静电纺丝纳米纤维敷料,其特征在于:包括底布、设置在底布上的保湿层、以及设置在保湿层上的功能层,制备所述保湿层的原料包括海藻酸钠和羧甲基纤维素,制备功能层的原料包括PDRN、干细胞外泌体、透明质酸钠、聚己内酯微球、明胶。
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