CN106119411A - 一种car‑t细胞病毒感染效率的检测方法 - Google Patents

一种car‑t细胞病毒感染效率的检测方法 Download PDF

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CN106119411A
CN106119411A CN201610482950.1A CN201610482950A CN106119411A CN 106119411 A CN106119411 A CN 106119411A CN 201610482950 A CN201610482950 A CN 201610482950A CN 106119411 A CN106119411 A CN 106119411A
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凌发忠
徐华栋
许国贞
刘振云
熊伍平
王维
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Sinobioway Cell Therapy Co Ltd
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Abstract

本发明公开了一种CAR‑T细胞病毒感染效率的检测方法,包括如下步骤:将病毒侵染CAR‑T细胞;待细胞稳定表达,抽提CAR‑T细胞的全基因组DNA;运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;数据处理:按Poisson分布规律,计算该病毒的感染效率;其中感染效率公式:P(K)=1‑P(0);其中,P(0)=e‑m;e为自然常数;m为MOI值,即感染复数。本发明可计算病毒的感染效率,计算方法简便,且精确度高,便于实际操作。

Description

一种CAR-T细胞病毒感染效率的检测方法
技术领域
本发明涉及CAR-T细胞病毒感染效率技术领域,尤其涉及一种CAR-T细胞病毒感染效率的检测方法。
背景技术
肿瘤的细胞治疗始于上世纪80年代。第一代细胞治疗技术属于采用非特异性的细胞治疗,主要方法包括LAK、NK、CIK等。第二代细胞治疗技术兴起于上世纪90年代,主要代表为DC-CIK,这种治疗技术属于诱导肿瘤特异性细胞治疗。第一代和第二代细胞治疗技术由于疗效有限等原因,在美欧等主要国家已几乎不再开展。第三代细胞治疗技术始于本世纪初,属于基因重组细胞治疗,主要有CAR-T、CAR-NK等。其中,最新的CAR-T技术不仅解决了T细胞的靶向性、杀伤性的问题,还解决了其体内有效增殖的难题。
在CAR-T细胞的培养流程中,病毒的侵染能力对细胞的治疗效果有着举足轻重的作用,目前如何有效对CAR-T细胞病毒感染效率进行检测,成为目前亟待解决的技术问题。
发明内容
本发明提出了一种CAR-T细胞病毒感染效率的检测方法,可计算病毒的感染效率,计算方法简便,且精确度高,便于实际操作。
本发明提出的一种CAR-T细胞病毒感染效率的检测方法,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;
S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e:自然常数;
m为MOI值,即感染复数。
优选地,m的计算公式为m=病毒拷贝数:细胞数;
其中病毒拷贝数单位为copies/μg,细胞数单位为个/μg,2.5~3.5×105个细胞含有1ugDNA,1μg DNA中病毒的拷贝数通过荧光定量PCR技术检测获知。
优选地,3×105个细胞含有1ugDNA。
在S2中,通过普通PCR鉴定细胞是否稳定表达。
本发明中,通过荧光定量PCR技术检测整合到细胞基因组DNA中的病毒拷贝数,根据病毒拷贝数与细胞数的比值计算出该病毒的感染复数,由于病毒感染细胞是一种随机事件,遵循Poisson分布规律,由此可计算病毒的感染效率。计算方法简便,且精确度高,便于实际操作。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种CAR-T细胞病毒感染效率的检测方法,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e为自然常数;
m为MOI值,即感染复数。
实施例2
一种CAR-T细胞病毒感染效率的检测方法,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e为自然常数;
m为MOI值,即感染复数。
m的计算公式为m=病毒拷贝数:细胞数;
其中病毒拷贝数单位为copies/μg,细胞数单位为个/μg,3.5×105个细胞含有1ugDNA,1μg DNA中病毒的拷贝数通过荧光定量PCR技术检测获知。
实施例3
一种CAR-T细胞病毒感染效率的检测方法,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;
S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e为自然常数;
m为MOI值,即感染复数。
m的计算公式为m=病毒拷贝数:细胞数;
其中病毒拷贝数单位为copies/μg,细胞数单位为个/μg,2.5×105个细胞含有1ugDNA,1μg DNA中病毒的拷贝数通过荧光定量PCR技术检测获知。
实施例4
一种CAR-T细胞病毒感染效率的检测方法,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;
S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e为自然常数;
m为MOI值,即感染复数。
m的计算公式为m=病毒拷贝数:细胞数;
其中病毒拷贝数单位为copies/μg,细胞数单位为个/μg,3×105个细胞含有1ugDNA,1μg DNA中病毒的拷贝数通过荧光定量PCR技术检测获知。
以上所述,仅为本发明较佳的具体实施方式,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,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (3)

1.一种CAR-T细胞病毒感染效率的检测方法,其特征在于,包括如下步骤:
S1、将病毒侵染CAR-T细胞;
S2、待细胞稳定表达,抽提CAR-T细胞的全基因组DNA;
S3、运用荧光定量PCR技术检测整合到全基因组DNA中的病毒拷贝数;
S4、数据处理:
按Poisson分布规律,计算该病毒的感染效率;
其中感染效率公式:P(K)=1-P(0);
其中,P(0)=e-m
P(0):未被感染细胞的百分率;
P(K):被感染细胞的百分率;
e为自然常数;
m为MOI值,即感染复数。
2.根据权利要求1所述的CAR-T细胞病毒感染效率的检测方法,其特征在于,m的计算公式为m=病毒拷贝数:细胞数;
其中病毒拷贝数单位为copies/μg,细胞数的单位为个/μg,2.5~3.5×105个细胞含有1ugDNA,1μg DNA中病毒的拷贝数通过荧光定量PCR技术检测获知。
3.根据权利要求2所述的CAR-T细胞病毒感染效率的检测方法,其特征在于,3×105个细胞含有1ugDNA。
CN201610482950.1A 2016-06-24 2016-06-24 一种car‑t细胞病毒感染效率的检测方法 Pending CN106119411A (zh)

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WO2019129048A1 (zh) * 2017-12-28 2019-07-04 上海细胞治疗研究院 双重荧光定量pcr测定car拷贝数的方法和试剂盒
CN111394316A (zh) * 2020-04-09 2020-07-10 济南宜明医疗科技有限公司 一种检测car-t基因拷贝数的标准物质的制备
CN113151593A (zh) * 2020-12-31 2021-07-23 肇庆大华农生物药品有限公司 一种测定难以观察组织细胞感染与否的病毒的含量的方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019129048A1 (zh) * 2017-12-28 2019-07-04 上海细胞治疗研究院 双重荧光定量pcr测定car拷贝数的方法和试剂盒
CN111394316A (zh) * 2020-04-09 2020-07-10 济南宜明医疗科技有限公司 一种检测car-t基因拷贝数的标准物质的制备
CN113151593A (zh) * 2020-12-31 2021-07-23 肇庆大华农生物药品有限公司 一种测定难以观察组织细胞感染与否的病毒的含量的方法

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Application publication date: 20161116