中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (13): 2067-2074.doi: 10.3969/j.issn.2095-4344.1659

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

永生化人肝细胞HepZJ的临床前急性毒性评价

卢扬洲1,黎 少1,姜 华2,李 伟2,高 毅1   

  1. 1南方医科大学珠江医院肝胆二科,广东省广州市 510280;2中国食品药品检定研究院国家药物安全评价监测中心/药物非临床安全评价研究北京市重点实验室,北京市 100176
  • 修回日期:2018-12-24 出版日期:2019-05-08 发布日期:2019-05-08
  • 通讯作者: 高毅,博士,主任医师,教授,博士生导师,南方医科大学珠江医院肝胆二科,广东省广州市 510280; 并列通讯作者:李伟,主任药师,中国食品药品检定研究院国家药物安全评价监测中心/药物非临床安全评价研究北京市重点实验室,北京市 100176
  • 作者简介:卢扬洲,男,1991年生,广东省陆丰市人,汉族,硕士,主要从事肝脏组织工程和生物人工肝研究。
  • 基金资助:

    国家高技术研究发展计划资助(2012AA020505),项目负责人:高毅;国家自然科学基金资助项目(81470875),项目负责人:高毅;广东省自然科学基金资助项目(2014A030312013),项目负责人:高毅;广东省级科技计划项目(2015B020229002),项目负责人:高毅

Pre-clinical acute toxicity of an immortalized human hepatocyte cell line HepZJ

Lu Yangzhou1, Li Shao1, Jiang Hua2, Li Wei2, Gao Yi1   

  1. 1Department of Hepatobiliary Surgery II, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China; 2National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control/The Beijing Key Lab for Pre-clinical Safety Evaluation of Drugs, Beijing 100176, China
  • Revised:2018-12-24 Online:2019-05-08 Published:2019-05-08
  • Contact: Gao Yi, MD, Chief physician, Professor, Doctoral supervisor, Department of Hepatobiliary Surgery II, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China; Li Wei, Chief pharmacist, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control/The Beijing Key Lab for Pre-clinical Safety Evaluation of Drugs, Beijing 100176, China
  • About author:Lu Yangzhou, Master, Department of Hepatobiliary Surgery II, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
  • Supported by:

    the National High Technology Research and Development Plan of China, No. 2012AA020505 (to GY); the National Natural Science Foundation of China, No. 81470875 (to GY); the Natural Science Foundation of Guangdong Province, No. 2014A030312013 (to GY); Guangdong Provincial Science and Technology Plan Project, No. 2015B020229002 (to GY)

摘要:

文章快速阅读:

文题释义:
急性毒性实验:
安全性实验的重要组成部分,它是指机体(人或实验动物)1次或24 h内多次接触外来药物后,观察在短期内(一般不超过14 d)引起中毒效应(包括死亡)的实验,这对于了解药物的毒性强度、性质和可能的靶器官,以及阐明药物的安全剂量是必不可少的。该实验以细胞系HepZJ作为药物进行临床前急性毒性研究。
细胞治疗:是近年来兴起的疾病治疗新技术,即利用某些具有特定功能细胞的特性,采用生物工程方法获取并通过体外扩增、特殊培养等处理后,使这些细胞具有替代损伤组织行使功能、增强免疫、杀死病原体和肿瘤细胞、促进组织器官再生和机体康复等治疗功效,从而达到治疗疾病的目的。

 

摘要
背景:
肝细胞移植、肝脏组织工程与生物人工肝的研究为肝衰竭患者带来福音,然而截至目前仍未发现十分合适的种子细胞。课题组前期自行构建人永生化肝细胞系HepZJ作为新的种子细胞,并进行了临床前安全性评价研究。
目的:对新型永生化人肝细胞系HepZJ进行急性毒性研究,为HepZJ应用于临床可能发生的毒副反应以及设计安全剂量提供参考依据。  
方法:在HepZJ细胞急性毒性研究中,将低、中、高(5×106,5×107,8.25×107)3个剂量组的HepZJ细胞悬液和空白对照溶液经尾静脉单次注射进入SD大鼠体内,观察大鼠的临床症状和体质量变化,注射结束后第1天以及第14天剖检进行血液学相关检验、大体病理和免疫组化检查,综合分析该细胞系的毒副反应和安全剂量。
结果与结论:在HepZJ细胞急性毒性研究中,高剂量组大鼠注射结束时出现1只死亡,与对照组比较,血常规、凝血功能和血清生化部分指标差异有显著性意义(P < 0.05);14 d后各项检查差异无显著性意义(P > 0.05)。低剂量组和中剂量组大鼠与对照组在临床症状、体质量变化、血液指标和大体病理形态上差异均无显著性意义。结果表明,永生化人肝细胞系HepZJ单次注射安全剂量为5×107/只,无明显毒副反应,剂量过大时可出现明显毒副反应,包括炎症应激、凝血障碍和肝功能损伤等,甚至死亡。因此,只有准确控制HepZJ的使用剂量,才能保证该细胞的临床应用安全性。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0003-3525-0133(高毅)

关键词: 永生化人肝细胞系, 安全性, 急性毒性, 单次注射, 毒副反应, 安全剂量, 细胞治疗产品, 肺栓塞, 国家自然科学基金

Abstract:

BACKGROUND: Hepatocyte transplantation, liver tissue engineering and biological artificial liver have brought good news to liver failure patients, but there are still no very appropriate seed cells so far. Our laboratory has built a human immortalized liver cell line named HepZJ as new seed cells, and a preclinical safety evaluation has been implemented.
OBJECTIVE: To complete the toxicity study of the new immortalized hepatocyte cell line HepZJ so as to provide reference for predicting possible toxic and adverse effects and designing safe dose of HepZJ in clinical practice.
METHODS: In the acute toxicity test, the HepZJ cell suspension of low, medium, high dose groups (5×106, 5×107, 8.25×107) and normal saline of control group were injected into the Sprague-Dawley rats through the caudal vein, respectively. The clinical symptoms of rats and its weight change were then observed. Anatomical examination was performed at 1 and 14 days after injection for hematological, gross pathological and immunohistochemical analyses. The adverse reactions and safety dosage of the cell line were analyzed comprehensively. 
RESULTS AND CONCLUSION: In the acute toxicity test of HepZJ cells, one rat in the high dose group died just after injection. Compared with the control group, parts of indexes in blood routine, clotting function and serum biochemical examination showed significant difference (P < 0.05) in the high dose group, while there was no significant difference at 14 days after injection. The experimental rats in the low dose group and medium dose group showed no obvious difference in clinical symptoms, body mass, blood indexes and gross pathological examination as compared with the control group (P > 0.05). To conclude, the safe dose of HepZJ is 5×107 cells for each injection, having no obvious adverse reactions. A larger dose may lead to obvious adverse reactions, such as inflammatory stress, clotting disorders, liver dysfunction and even death. Therefore, to accurately control the dose of HepZJ is the guarantee for the clinical safety of HepZJ.

Key words: Hepatocytes, Cell Transplantation, Acute Toxicity Tests, Tissue Engineering

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