CN112353816A - 一种用于干细胞及其相关制品的可直接回输的冻存液 - Google Patents
一种用于干细胞及其相关制品的可直接回输的冻存液 Download PDFInfo
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Abstract
本发明提供了一种用于干细胞及其相关制品的可直接回输的冻存液,属于冻存保护剂领域。它解决了现有冻干保护剂添加动物源性原料,对培养细胞的自我更新及分化过程带来不确定因素等问题,一种用于干细胞及其相关制品的可直接回输的冻存液,按体积份数计,包括以下组分:5份‑10份二甲基亚砜,30份‑35份的复方电解质注射液,30份‑35份葡萄糖注射液,15份‑20份人血白蛋白注射液,10份‑15份右旋糖酐注射液。本专利具有干细胞复苏后可直接回输,不需要清洗,节省时间和成本,有助于提高细胞产量和细胞活力等优点。
Description
技术领域
本发明涉及冻存保护剂领域,尤其涉及一种用于干细胞及其相关制品的可直接回输的冻存液。
背景技术
干细胞指的是能够自我更新、分裂以及分化成其它细胞类群的一种细胞。
目前干细胞研究已完成了一系列安全性实验,包括毒性试验、遗传学试验、局部刺激试验、发热试验和免疫毒性试验等,结果表明,干细胞是安全、无毒的。此外,成体干细胞经过多次传代后,没有出现变异现象,也就是说,不会有致瘤的可能。大量的临床资料也表明,干细胞治疗过程中除了极少数病人有短时、轻微的发热头痛外,没有发现其它显著的副作用或不良反应。
干细胞的研究和应用过程中都绕不开细胞冻存这一步骤,所以冻存保护剂的选择尤为重要。若冻存保护剂选择不良,比如使用动物源性的冻存剂可能会对培养干细胞的自我更新及分化过程带来不确定因素。并且干细胞或其相关制品用现有的冻存保护剂冻存后,在其复苏后,均需要进行清洗等操作,洗去冻存保护剂,因为现有的冻存保护剂不能直接注入人体内,故一定要将冻存保护剂清洗干净。
发明内容
本发明针对现有技术中存在的上述问题,提供了一种用于干细胞及其相关制品的可直接回输的冻存液。
为了实现上述目的,本发明采用以下技术方案:一种用于干细胞及其相关制品的可直接回输的冻存液,其特征在于,按体积份数计,包括以下组分:5份-10份二甲基亚砜,30份-35份的复方电解质注射液,30份-35份葡萄糖注射液,15份-20份人血白蛋白注射液,10份-15份右旋糖酐注射液。
优选地,所述的复方注射液为每1000mL含氯化钠5.26g,葡萄糖酸钠5.02g,醋酸钠3.68g,氯化钾0.37g和氯化镁0.30g。
优选地,所述的葡萄糖注射液中,葡萄糖的质量分数为5%。
优选地,所述的人血白蛋白注射液中,人血白蛋白的质量分数为20%。
与现有技术相比,本发明具有以下优点:
1.本发明的冻存保护剂组分为二甲基亚砜(DMSO)、复方电解质注射液、葡萄糖注射液、人血白蛋白注射液、低分子右旋糖酐注射液,安全,对人体无害,可以用来直接冻存干细胞,干细胞在冻存一定的周期后复苏,存活率显著提高,细胞状态优良,省略干细胞复苏后清洗步骤,可以直接注射使用,即可直接静脉注射回输到人体内。由于省略了清洗步骤,从而减少了细胞生产步骤,有利于大大提高细胞的产量。
2.本发明的冻存保护剂的保质期为2年,两年内使用本发明的冻存保护剂都能够用来直接冻存干细胞,且干细胞在冻存一定的周期后复苏,可以直接注射使用,即可直接静脉注射回输到人体内。
3.本发明的冻存保护剂组分为DMSO、复方电解质注射液、葡萄糖注射液、人血白蛋白注射液、低分子右旋糖酐注射液均非动物源性,进而有效地规避了由于动物源性物质对干细胞的自我更新及分化过程带来了不确定因素以及对培养细胞造成污染的情况的发生,并且能够在细胞治疗的过程中完全避免诱发免疫反应的发生。
附图说明
图1是本发明脐带间充质干细胞的形态特征图;
图2是本发明脐带间充质干细胞的细胞生长图;
图3是本发明脐带间充质干细胞冻存一周后复苏的RTCA增殖图;
图4是本发明脐带间充质干细胞冻存一月后复苏的RTCA增殖图;
图5是本发明对照组的脐带间充质干细胞冻存一周后复苏的流式细胞凋亡结果;
图6是采用本发明的冻存保护剂,脐带间充质干细胞冻存一周后复苏的流式细胞凋亡结果;
图7是本发明对照组的脐带间充质干细胞冻存一月后复苏的流式细胞凋亡结果;
图8是采用本发明的冻存保护剂,脐带间充质干细胞冻存一月后复苏的流式细胞凋亡结果;
图9是本发明脐带间充质干细胞的P3代CD14流式检测结果;
图10是本发明脐带间充质干细胞的P3代CD19流式检测结果;
图11是本发明脐带间充质干细胞的P3代CD34流式检测结果;
图12是本发明脐带间充质干细胞的P3代CD45流式检测结果;
图13是本发明脐带间充质干细胞的P3代HLA-DR流式检测结果;
图14是本发明脐带间充质干细胞的P3代CD73流式检测结果;
图15是本发明脐带间充质干细胞的P3代CD90流式检测结果;
图16是本发明脐带间充质干细胞的P3代CD105流式检测结果;
图17是本发明脐带间充质干细胞的P10代CD14流式检测结果;
图18是本发明脐带间充质干细胞的P10代CD19流式检测结果;
图19是本发明脐带间充质干细胞的P10代CD34流式检测结果;
图20是本发明脐带间充质干细胞的P10代CD45流式检测结果;
图21是本发明脐带间充质干细胞的P10代CDHLA-DR流式检测结果;
图22是本发明脐带间充质干细胞的P10代CD73流式检测结果;
图23是本发明脐带间充质干细胞的P10代CD90流式检测结果;
图24是本发明脐带间充质干细胞的P10代CD105流式检测结果。
具体实施方式
以下是本发明的具体实施例并结合附图,对本发明的技术方案作进一步的描述,但本发明并不限于实施例。
实施例1脐带间充质干细胞冻存、复苏及特性检测
1、实验材料
脐带间充质干细胞、DMSO、复方电解质注射液、5%葡萄糖注射液、20%人血白蛋白注射液、低分子右旋糖酐注射液,Thermo CO2培养箱,Thermo(赛默飞)离心机,生物安全柜,Accuri C6plus流式细胞仪,液氮罐。
2、试验方法
实施例1
冻存液配制:按体积份数计,量取6份DMSO,32份的复方电解质注射液,32份质量分数为5%葡萄糖注射液,18份质量分数为20%人血白蛋白注射液,12份的低分子右旋糖酐注射液,将所述各组分混合摇匀即。
复方电解质注射液为每1000mL含氯化钠5.26g,葡萄糖酸钠5.02g,醋酸钠3.68g,氯化钾0.37g和氯化镁0.30g。
脐带间充质干细胞冻存:取对数生长期的脐带间充质干细胞,使用冻存保护剂稀释至对应的冻存密度,分装至冻存管中,每管1mL,贴上标签,投入液氮罐中冻存至相应时间。液氮温度为-196℃,因此本发明的冻存剂使得脐带间充质干细胞可以在超低温中保存。
脐带间充质干细胞复苏、原代培养:取出冻存细胞管迅速放入37℃水浴锅中,充分振荡使其融化,再于37℃、5%CO2饱和湿度条件培养。原代培养11-23d后细胞整体如图2所示,放大后形态如图1所示,图1是脐带间充质干细胞的形态特征图,形态良好,图2是脐带间充质干细胞的增殖倍数图。由此可见,使用本冻存保护剂间充质干细胞具有存活率显著提高,细胞状态好的优点。
脐带间充质干细胞复苏后细胞活力检测:利用RTCA(实时无标记细胞分析系统)检测干细胞冻存不同时间后复苏时细胞的增殖能力。RTCA结果如图所示,图3是脐带间充质干细胞冻存一周后的结果,图4是脐带间充质干细胞冻存一月后的结果。
对照组:常规的高效细胞冻存液(90%FBS+10%DMSO)。结果显示冻存不同时间后,本发明的冻存剂保护剂的效果都跟标准对照组差不多,甚至更好,表明本发明的冻存保护剂适用于脐带间充质干细胞保存,不会影响其增殖能力。
利用流式细胞仪检测干细胞冻存不同时间后复苏时细胞凋亡情况(图5-8)。图5-6是脐带间充质干细胞冻存一周后的细胞凋亡结果,图5为对照组结果图,图6采用本发明的冻存保护剂后的结果图。
图7-8是脐带间充质干细胞冻存一月后的细胞凋亡结果。图7为对照组结果图,图8采用本发明的冻存保护剂后的结果图。
结果表明本冻存保护剂适用于脐带间充质干细胞冻存,不会影响其细胞活性(H3门控百分比越高,代表细胞存活率越高,细胞凋亡数越少)。
脐带间充质干细胞传代培养后检测:测定P5代、P15代CD14、CD19、CD34、CD45、CD73、CD90、HLA-DR、CD105流式检测结果,P5代细胞流式检测如图9-22检测结果所示:CD14、CD19、CD34、CD45、HLA-DR阳性率均小于2%。CD73、CD90、CD105阳性率均大于95%,纯度合乎要求。对培养的脐带来源的MSC细胞(P3代以及P10代)进行流式检测,结果表明两个代次的细胞的纯度均合乎要求。由此可见使用本冻存保护剂间充质干细胞具有培养的细胞代次多、增殖能力强、状态好的优点。
CD:免疫细胞表面抗原分子,本发明的免疫细胞表面抗原分子用来鉴定是否是间充质干细胞的判断标准。
实施例2
冻存液配制:按体积份数计,量取5份DMSO,30份的复方电解质注射液,30份质量分数为5%葡萄糖注射液,25份质量分数为20%人血白蛋白注射液,10份的低分子右旋糖酐注射液,将所述各组分混合摇匀即。
复方电解质注射液为每1000mL含氯化钠5.26g,葡萄糖酸钠5.02g,醋酸钠3.68g,氯化钾0.37g和氯化镁0.30g。
实施例3
冻存液配制:按体积份数计,量取10份DMSO,35份的复方电解质注射液,35份质量分数为5%葡萄糖注射液,10份质量分数为20%人血白蛋白注射液,10份的低分子右旋糖酐注射液,将所述各组分混合摇匀即。
实施例2和实施例3其他操作步骤和实施例1相同,也可以得到本发明的结论。
利用加速破坏实验测量本发明冻存保护剂的保质期,测得本发明的冻存保护剂的保质期为2年,两年内使用本发明的冻存保护剂都能够用来直接冻存间充质干细胞,且间充质干细胞在冻存一定的周期后复苏,可以直接注射使用,即可直接静脉注射回输到人体内。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。
Claims (4)
1.一种用于干细胞及其相关制品的可直接回输的冻存液,其特征在于,按体积份数计,包括以下组分:5份-10份二甲基亚砜(DMSO),30份-35份的复方电解质注射液,30份-35份葡萄糖注射液,15份-20份人血白蛋白注射液,10份-15份右旋糖酐注射液。
2.根据权利要求1所述的一种用于干细胞及其相关制品的可直接回输的冻存液,其特征在于,所述的复方注射液为每1000mL含氯化钠5.26g,葡萄糖酸钠5.02g,醋酸钠3.68g,氯化钾0.37g和氯化镁0.30g。
3.根据权利要求1所述的一种用于干细胞及其相关制品的可直接回输的冻存液,其特征在于,所述的葡萄糖注射液中,葡萄糖的质量分数为5%。
4.根据权利要求1所述的一种用于干细胞及其相关制品的可直接回输的冻存液,其特征在于,所述的人血白蛋白注射液中,人血白蛋白的质量分数为20%。
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