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CN107156112A - 一种用于cik细胞于‑80℃直接冻存的冻存液 - Google Patents

一种用于cik细胞于‑80℃直接冻存的冻存液 Download PDF

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CN107156112A
CN107156112A CN201710636110.0A CN201710636110A CN107156112A CN 107156112 A CN107156112 A CN 107156112A CN 201710636110 A CN201710636110 A CN 201710636110A CN 107156112 A CN107156112 A CN 107156112A
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cells
matrix
cik cells
cik
cryopreservation
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CN107156112B (zh
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胡攀勇
张钟祥
张世超
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SHANDONG XINRUI BIOTECHNOLOGY Co.,Ltd.
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Nanjing Bai Tektronix Biological Technology Co Ltd
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N1/00Preservation of bodies of humans or animals, or parts thereof
    • A01N1/10Preservation of living parts
    • A01N1/12Chemical aspects of preservation
    • A01N1/122Preservation or perfusion media
    • A01N1/125Freeze protecting agents, e.g. cryoprotectants or osmolarity regulators

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Abstract

本发明公开了一种用于CIK细胞于‑80℃直接冻存的冻存液,该冻存液以RPMI‑1640培养液为基质,在基质中添加DMSO、FBS复配而成,基质中还添加有效量的人β2‑微球蛋白。使用本发明提供的细胞冻存液冻存CIK细胞时,可以直接于‑80℃冻存,且不会导致CIK细胞杀伤力明显降低,可以简化CIK细胞低温冻存工艺。

Description

一种用于CIK细胞于-80℃直接冻存的冻存液
技术领域
本发明属于细胞冻存领域,具体涉及一种用于CIK细胞于-80℃直接冻存的冻存液。
背景技术
冻存CIK细胞时,一般降温程序为:首先于4℃冰箱中放置1h,然后-20℃冰箱中放置2h,最后转至-80℃低温冰箱放置(或用液氮保存),程序繁琐。但是,若直接将CIK细胞转至-80℃低温冰箱保存,会显著降低CIK细胞对肿瘤细胞的杀伤活性【参考文献:-80℃冰箱直接冻存对细胞因子诱导的杀伤细胞杀伤活性的影响,细胞与分子免疫学杂志,2012,28(10)】。
这主要与细胞冻存液有关,现有冻存液不适合用作CIK细胞于-80℃直接冻存的保护剂。
发明内容
本发明旨在克服现有技术的不足,简化CIK细胞低温冻存工艺,提供一种用于CIK细胞于-80℃直接冻存的冻存液。
本发明通过如下技术方案得以实现:
一种细胞冻存液,以RPMI-1640培养液为基质,在基质中添加DMSO、FBS复配而成,基质中还添加有效量的人β2-微球蛋白。
优选地,1L基质添加1-2g人β2-微球蛋白。
优选地,1L基质添加80-120mLDMSO。
优选地,1L基质添加180-220mLFBS。
上述细胞冻存液在CIK细胞冻存方面的应用。
本发明优点:
使用本发明提供的细胞冻存液冻存CIK细胞时,可以直接于-80℃冻存,且不会导致CIK细胞杀伤力明显降低,可以简化CIK细胞低温冻存工艺。
附图说明
图1为不同CIK细胞对K562细胞的杀伤率(%)。
具体实施方式
为了更好地解释本发明的技术方案,下面结合具体实施例进一步介绍。实施例中未特别强调的实验材料均为常规实验材料,属于本领域技术人员易于获得的范畴。
实施例1
一、实验材料和方法
1、细胞冻存液的配制
在RPMI-1640培养液(美国Gibco公司)中添加二甲基亚砜(DMSO)、胎牛血清(FBS,美国Gibco公司)和人β2-微球蛋白(购于武汉戴安生物技术有限公司,货号P0008),其中:1LRPMI-1640培养液中分别添加1.5g人β2-微球蛋白、100mL DMSO、200mLFBS。混合均匀后于4℃低温保存,使用前取出并轻轻摇匀。
另按照常规配方配制对比冻存液,对比冻存液的成分为含10%DMSO及20%FBS的RPMI-1640作为冻存剂。
2、CIK细胞的培养扩增
取肝素抗凝的健康志愿者外周血20ml,用淋巴细胞分离液密度梯度离心(2400×g,20min),轻轻吸取灰白色层的单个核细胞,用生理盐水洗涤3次,以RPMI-1640培养液调整细胞密度为5×106/mL,加到培养瓶内,每瓶15mL,置37℃、5%CO2培养箱中培养2h,轻轻摇匀,吸出悬浮细胞,离心后去上清用RPMI-1640培养液(含100mL/L FBS、rhIL-2500U/mL,小鼠抗人CD3单克隆抗体500ng/mL,IFN-γ1000U/ml,rhIL-1100U/mL)调细胞密度为2.5×106/mL,加到培养瓶内,每瓶20mL。接种当天记为0天,每隔3d半量换液并补足rhIFN-γ及rhIL-2。
3、CIK细胞的冻存和复苏
CIK培养至第12天时,留1瓶CIK用于检测杀伤活性外,收集其余细胞,计数,分别用上述本发明配方冻存液和对比冻存液调整细胞密度为5×107/mL,直接冻存于-80℃冰箱。
冻存6个月后,将冻存管从-80℃冰箱取出后立即投入40℃水浴中快速融化,800r/min离心10min,弃上清,用RPMI-1640培养液(含100mL/L FBS、rhIL-2500U/mL,IFN-γ1000U/mL,rhIL-1100U/mL)重悬细胞,调整细胞密度为2.5×106/mL,37℃、5%CO2培养箱内培养。
3、CIK细胞的杀伤活性
分别将培养至第12天未冻存、用本发明细胞冻存液冻存6月复苏培养5天、用对比冻存液冻存6月复苏培养5天的CIK细胞与对数期的K562细胞按照效靶比20:1混合,同时设单独的靶细胞及效应细胞孔,用LDH释放法,测定490nm的吸光度(A)值,计算各组CIK对K562细胞的杀伤率(%)。
二、实验结果
培养至第12天未冻存、用本发明细胞冻存液冻存6月复苏培养5天、用对比冻存液冻存6月复苏培养5天的CIK细胞对K562细胞的杀伤率如表1和图1所示。与未冻存的CIK细胞相比,用本发明细胞冻存液冻存6月复苏培养5天、用对比冻存液冻存6月复苏培养5天的CIK细胞对K562细胞的杀伤率均降低,但是用本发明细胞冻存液冻存6月复苏培养5天的CIK细胞对K562细胞的杀伤率降低不明显,显著优于对比冻存液的冻存效果。
表1不同CIK细胞对K562细胞的杀伤率(%)
上述结果表明,使用本发明提供的细胞冻存液冻存CIK细胞时,可以直接于-80℃冻存,且不会导致CIK细胞杀伤力明显降低,可以简化CIK细胞低温冻存工艺。
上述实施例仅用于进一步解释本发明的技术方案,本领域技术人员应当明白,任何简单替换或修改均不脱离本发明,本发明的保护范围并不受限于上述具体实施例。

Claims (5)

1.一种细胞冻存液,以RPMI-1640培养液为基质,在基质中添加DMSO、FBS复配而成,其特征在于:基质中还添加有效量的人β2-微球蛋白。
2.根据权利要求1所述的细胞冻存液,其特征在于:1L基质添加1-2g人β2-微球蛋白。
3.根据权利要求1所述的细胞冻存液,其特征在于:1L基质添加80-120mLDMSO。
4.根据权利要求1所述的细胞冻存液,其特征在于:1L基质添加180-220mLFBS。
5.权利要求1-4任一所述细胞冻存液在CIK细胞冻存方面的应用。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011156763A1 (en) * 2010-06-11 2011-12-15 Hitachi Chemical Co., Ltd. Methods for characterizing kidney function
CN103210903A (zh) * 2013-05-03 2013-07-24 新乡医学院 一种用于保存cik细胞的冻存液及其应用
CN104938477A (zh) * 2015-04-10 2015-09-30 杭州阿德莱诺泰制药技术有限公司 一种cik细胞冻存液及冻存方法
CN105248413A (zh) * 2015-11-10 2016-01-20 广州赛莱拉干细胞科技股份有限公司 一种cik细胞冻存液
CN106472486A (zh) * 2016-12-26 2017-03-08 南京佰泰克生物技术有限公司 一种维持dc‑cik细胞高杀伤力的冻存保护剂
CN106577635A (zh) * 2016-12-26 2017-04-26 南京佰泰克生物技术有限公司 一种维持cik细胞高杀伤力的冻存保护剂

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011156763A1 (en) * 2010-06-11 2011-12-15 Hitachi Chemical Co., Ltd. Methods for characterizing kidney function
CN103210903A (zh) * 2013-05-03 2013-07-24 新乡医学院 一种用于保存cik细胞的冻存液及其应用
CN104938477A (zh) * 2015-04-10 2015-09-30 杭州阿德莱诺泰制药技术有限公司 一种cik细胞冻存液及冻存方法
CN105248413A (zh) * 2015-11-10 2016-01-20 广州赛莱拉干细胞科技股份有限公司 一种cik细胞冻存液
CN106472486A (zh) * 2016-12-26 2017-03-08 南京佰泰克生物技术有限公司 一种维持dc‑cik细胞高杀伤力的冻存保护剂
CN106577635A (zh) * 2016-12-26 2017-04-26 南京佰泰克生物技术有限公司 一种维持cik细胞高杀伤力的冻存保护剂

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