中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (9): 1422-1427.doi: 10.3969/j.issn.2095-4344.1624

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

脾内两种途径肝细胞移植治疗急性肝衰竭大鼠的效果评价

冯 渊1,李德卫2,杨均均1   

  1. 1川北医学院第二临床学院,南充市中心医院,四川省南充市 637000;2重庆医科大学附属第一医院肝胆外科,重庆市 400016
  • 修回日期:2018-11-26 出版日期:2019-03-28 发布日期:2019-03-28
  • 通讯作者: 李德卫,博士,教授,重庆医科大学附属第一医院肝胆外科,重庆市 400016
  • 作者简介:冯渊,男,1983年生,四川省邻水县人,汉族,2012年重庆医科大学毕业,硕士,主要从事肝细胞移植方面的研究。
  • 基金资助:

    国家自然科学基金项目(81470898),项目负责人:李德卫

Therapeutic effects of hepatocyte transplantation via two different intrasplenic approaches in acute hepatic failure rats

Feng Yuan1, Li Dewei2, Yang Junjun1   

  1. 1Nanchong Central Hospital, the Second Clinical School of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China; 2Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • Revised:2018-11-26 Online:2019-03-28 Published:2019-03-28
  • Contact: Li Dewei, MD, Professor, Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • About author:Feng Yuan, Master, Nanchong Central Hospital, the Second Clinical School of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81470898 (to LDW)

摘要:

文章快速阅读:

文题释义:
肝细胞移植:
目前肝细胞移植作为原位肝移植的替代治疗方法之一,主要应用于终末期肝病以及肝脏代谢性疾病治疗,能有效地提供近期或者远期肝功能支持,取得了一定的成功。更有人认为未来肝细胞移植可能取代肝移植。
急性肝衰竭:指各种原因引起肝细胞大面积坏死或严重肝功能损害。肝脏内的肝细胞呈一次性大面积坏死,伴存活肝细胞严重变性,肝窦网状支架塌陷或非完全性塌陷,坏死组织释放各种酶及细胞内容物导致局部炎症反应,同时正常肝细胞释放过量的细胞因子和炎症递质进一步破坏溶解肝细胞,最终导致肝脏内环境紊乱。该病具有很高死亡率,目前治疗方法有肝移植、人工肝、肝细胞移植等。

 

摘要
背景:
肝细胞移植在治疗代谢性疾病和急性肝衰竭的动物实验中取得了一定成功,然而肝细胞移植的临床疗效却并没有动物实验理想。造成实验模型与临床疗效的差异可能与肝细胞移植途径有一定关系。
目的:探讨经颈动脉途径脾动脉插管注射与脾脏直接注射两种方法行肝细胞移植治疗急性肝衰竭大鼠的疗效,得出更加优化的移植方法。  
方法:在Seglen改良两步法的基础上稍加改进分离培养肝细胞。采用D-氨基半乳糖诱导大鼠(重庆医科大学实验动物中心提供)急性肝衰竭 24 h后,65只大鼠经颈动脉途径脾动脉插管,60只插管成功后随机分为3组:脾脏直接注射组(n=20)大鼠经脾脏直接注射约2×107个肝细胞、脾动脉注射0.4 mL Hank’s液;脾动脉注射组(n=20)大鼠经脾脏直接注射0.4 mL Hank’s液、脾动脉注射2×107个肝细胞;模型对照组(n=20)经脾脏直接注射0.4 mL Hank’s液、脾动脉注射0.4 mL Hank’s液。移植后14 d内观察各组大鼠的生存率及肝功能变化;移植后7 d,荧光显微镜观察经脾动脉移植肝细胞的体内分布情况,苏木精-伊红染色观察移植肝细胞在脾内的分布和增殖情况;移植后14 d,免疫荧光染色观察白蛋白合成情况。
结果与结论:①大鼠肝细胞分离存活率达80%-90%;②3组大鼠生存率的比较差异有显著性意义,脾脏直接注射组14 d存活率显著高于脾动脉注射组, 脾动脉注射组14 d存活率高于模型对照组;③脾脏直接注射组、脾动脉注射组大鼠肝功能均明显改善,尤其以脾脏直接注射组最为显著;④CFDA-SE荧光标记的肝细胞经脾动脉移植7 d后,受体大鼠脾脏和肝脏可以看到散在绿色荧光分布;⑤移植14 d后,脾脏直接注射组、脾动脉注射组脾脏内有肝细胞白蛋白绿色荧光信号;⑥移植7 d后,脾脏直接注射组、脾动脉注射组肝细胞在脾脏红髓中簇集在一起并定植下来;⑦结果表明,经大鼠颈动脉途径脾动脉插管移植肝细胞能提高急性肝衰竭大鼠的存活率和改善其肝功能;脾脏直接注射法优于脾动脉途径注射法。


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: 0000-0002-2353-7893(冯渊)

关键词: 急性肝衰竭, 肝细胞移植, 脾动脉插管, 脾动脉注射, 脾内直接注射

Abstract:

BACKGROUND: Hepatocyte transplantation has achieved some success in animal experiments for the treatment of metabolic diseases and acute liver failure. However, the clinical efficacy of hepatocyte transplantation is unsatisfactory. The difference between the experimental results and the clinical efficacy may be related to the hepatocyte transplantation approach.
OBJECTIVE: To evaluate the therapeutic effects of hepatocyte transplantation by the intubation via the intubation of the splenic artery and intrasplenic injection in rats with acute hepatic failure, providing more optimal transplantation approaches and methods.
METHODS: Hepatocytes were isolated and cultured by the modified Seglen’s method (two-step). Acute hepatic failure was induced by D-gal in Sprague-Dawley rats (provided by the Experimental Animal Center of Chongqing Medical University in China). After 24 hours, an intubation tube was inserted into the splenic artery in 65 rats with acute hepatic failure, which was successful in 60 rats. Then these 60 rat models were randomly divided into three groups (n=20 per group). Intrasplenic injection group received about 2×107 hepatocytes through intrasplenic injection and 0.4 mL of Hank’s solution through the splenic artery. Splenic artery group received 0.4 mL of Hank’s solution through intrasplenic injection and 2×107 hepatocytes through the splenic artery. Model group received 0.4 mL of Hank’s solution through intrasplenic injection and 0.4 mL of Hank’s solution through the splenic artery. Survival rate and liver function of the rats was observed within 14 days after transplantation. The distribution of CFDA-SE-labeled hepatocytes transplanted via the splenic artery was observed under fluorescence microscope at 7 days after transplantation, and meanwhile, the distribution and proliferation of transplanted hepatocytes in the spleen were observed using hematoxylin-eosin staining. Synthesis of albumin in the spleen was observed by immunofluorescence staining.
RESULTS AND CONCLUSION: (1) 80%-90% hepatocytes survived after isolation. (2) At 14 days after transplantation, the survival rates of rats in the three groups were significantly different: intrasplenic injection group > splenic artery group > model group. (3) The liver function of rats was significantly improved in the intrasplenic injection group and the splenic artery group, especially in the former group. (4) CFDA-SE-labeled hepatocytes (green fluorescence) were scattered in the rat spleen and liver at 7 days after transplantation via the splenic artery. (5) At 14 days after transplantation, immunofluorescent staining of albumin demonstrated some positive cells in the rat spleen in the intrasplenic injection group and splenic artery group. (6) At 7 days after transplantation, transplanted hepatocytes were concentrated and colonized in the red pulp of the spleen. In conclusion, hepatocyte transplantation through catheterization of the splenic artery via carotid route can improve the survival of rats with acute hepatic failure and ameliorate the hepatic function, but intrasplenic injection is significantly superior to the injection via the splenic artery.


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

Key words: Liver Failure, Acute, Hepatocytes, Spleen, Splenic Artery, Tissue Engineering

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