中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (1): 40-45.doi: 10.3969/j.issn.2095-4344.0401

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

肝损伤后成熟肝细胞和卵圆细胞在肝再生中的作用

王亚萍1,孔祥平2,卓 丽1,唐小平1,高洪波1,佟明华2   

  1. 1广州市第八人民医院肝病科,广东省广州市 510060;2解放军第四五八医院肝病防治中心,广东省广州市 510600
  • 修回日期:2017-10-13 出版日期:2018-01-08 发布日期:2018-01-08
  • 通讯作者: 佟明华,博士,主任医师,解放军第四五八医院肝病防治中心,广东省广州市 510600
  • 作者简介:王亚萍,女,1985年生,四川省眉山市人,汉族,2013年南方医科大学毕业,硕士,主治医师,主要从事骨科研究。
  • 基金资助:

    国家973重点基础研究发展计划(2010CB945502);广州市科技计划项目(201508020262);广东省科技计划项目(2015B020226004)

Role of mature liver cells and oval cells in liver regeneration after liver injury

Wang Ya-ping1, Kong Xiang-ping2, Zhuo Li1, Tang Xiao-ping1, Gao Hong-bo1, Tong Ming-hua2   

  1. 1Department of Hepatopathy, Guangzhou Eighth People’s Hospital, Guangzhou 510060, Guangdong Province, China; 2Prevention and Treatment Center for Hepatopathy, the 458th Hospital of PLA, Guangzhou 510600, Guangdong Province, China
  • Revised:2017-10-13 Online:2018-01-08 Published:2018-01-08
  • Contact: Tong Ming-hua, M.D., Chief physician, Prevention and Treatment Center for Hepatopathy, the 458th Hospital of PLA, Guangzhou 510600, Guangdong Province, China
  • About author:Wang Ya-ping, Master, Attending physician, Department of Hepatopathy, Guangzhou Eighth People’s Hospital, Guangzhou 510060, Guangdong Province, China
  • Supported by:

    the National Basic Research Program of China (973 Program), No. 2010CB945502; the Key Scientific and Technological Program of Guangzhou City, No. 201508020262; the Scientific and Technological Program of Guangdong Province, No. 2015B020226004

摘要:

文章快速阅读:

文题释义:
肝卵圆细胞:
Farber于1950年发现,乙硫氨基酪酸、2-氨基乙酰芴及3-甲基-4-二甲基胺苯等致癌物质可导致大鼠肝脏门脉周围区的上皮细胞增生,因这些增生的上皮细胞细胞核呈卵圆形,故将其命名为卵圆细胞(oval cells)。1956年,Farber首次将其命名为卵圆细胞。后来研究发现其他组织器官在某些病理条件下也出现细胞核为卵圆形的细胞,为与其他组织器官的卵圆形细胞相区别,常将肝脏的这种卵圆形细胞称为肝脏卵圆细胞 (hepatic oval cells,HOC)。一般认为,肝脏卵圆细胞直径为10-15 μm,表达OV-6、细胞角蛋白19、谷氨酰转肽酶、部分表达白蛋白及甲胎球蛋白,但不表达过氧化物酶。
倒千里光碱:中文名雪叶莲,菊科植物名称。菊科是被子植物中最大的一个科;有900-1 000属,25 000- 30 000种,全世界都有分布,热带较少,中国有230属2 300多种。该科植物中有毒种类较多,主要分布在苍耳属(XanthiumL.)、艾属(ArtemiaL.)、斑鸠菊属(VernoniaSchreber)和千里光属(SenecioL.)。

 

摘要
背景:
倒千里光碱是能长期抑制成熟肝细胞分裂增生的肝化学毒剂。
目的:联合应用倒千里光碱和肝脏1/3切除建立肝损伤大鼠模型,肝损伤观察大鼠肝细胞和卵圆细胞增殖情况,以及成熟肝细胞和卵圆细胞与肝脏再生的关系。
方法:SD雄性大鼠30只,随机分为2组,每组15只。①倒千里光碱/肝脏1/3切除组:腹腔注射倒千里光碱,30 mg/ kg,共注射2次,每次间隔2周;②1/3肝切除组:用生理盐水代替倒千里光碱。两组大鼠在末次注射4周后行肝脏1/3切除术。观察两组大鼠术后不同时间点肝脏病理形态变化、细胞增殖情况和CK19、C-kit免疫组织化学检测情况。
结果与结论:①倒千里光碱/肝脏1/3切除组大鼠术后20 d体质量仍低于术前,肝脏增大明显小于肝脏1/3切除组,苏木精-伊红染色示胞体肿大、胞浆疏松、肝细胞广泛空泡变性,汇管区小胆管周围和肝小叶内可见成簇或散在分布的卵圆细胞增生;②肝脏1/3切除组术后20 d体质量恢复接近术前,肝脏损害较倒千里光碱/肝脏1/3切除组轻,Brdu免疫荧光示成熟肝细胞大量增生,术后14 d见肝卵圆细胞增生,多出现在肝细胞索中,形态和免疫组织化学标记与倒千里光碱/肝脏1/3切除组卵圆细胞一致;③结果提示,成功构建了倒千里光碱联合肝脏1/3切除的急性肝损伤大鼠模型,实验可见肝脏中毒及中毒后肝干细胞和成熟肝细胞增殖的现象,证实肝细胞更新与损伤后再生是肝流域中肝内外源肝干细胞及成熟肝细胞共同作用的结果。

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:
0000-0002-0609-9115(王亚萍)

关键词: 组织构建, 组织工程, 倒千里光碱, 肝脏1/3切除术, 肝细胞, 卵圆细胞, 肝脏再生

Abstract:

BACKGROUND: Retrorsine (RS) is a chemical agent for the long-term inhibition of mature liver cell division and proliferation.
OBJECTIVE: To establish a rat model of liver injury by combined use of RS and 1/3 partial hepatectomy, to observe the proliferation of liver cells and oval cells in rats after liver injury, and to discuss the relationship between liver regeneration and mature liver cells and oval cells after liver injury. 
METHODS: Thirty male Sprague-Dawely rats were randomized into two groups (n=15 per group): RS group and control group. Rats in the RS group were subjected to intraperitoneal injection of RS, 30 mg/kg, twice in total, with 2 weeks in between; and rats in the control group were injected physiological saline instead of RS. Four weeks after the last injection, the 1/3 partial hepatectomy was performed in two groups of rats. Liver pathological and morphological changes as well as cell proliferation were observed, and CK19 and C-kit immunohistochemical detections of the rat liver in the two groups were conducted at different time points after operation.
RESULTS AND CONCLUSION: At 20 days after operation, the body mass of the RS group rats was still lower than the baseline, and the liver increase was obviously less than that in the control group; there was cell body swelling shown by hematoxylin-eosin staining, loose cytoplasm, extensive vacuoles degeneration of liver cells, and clustered or scattered oval cells around the portal area of small bile duct and in the hepatic lobule. However, in the control group, the body mass was close to the baseline, liver damage was lighter than that in the RS group, a large number of mature liver cells proliferated under BrdU Immunofluorescence at 20 days after operation; liver oval cells proliferated and distributed in the liver cell line at 14 days after operation, with morphology and immunohistochemical markers consistent with oval cells in the RS group. These findings indicate that the rat model of acute liver injury is successfully established by combining retrorsine with 1/3 partial hepatectomy, liver poisoning and the proliferation of liver stem cells and mature liver cells after poisoning can be seen in the experiment, which firmly confirm that liver cell renewal and regeneration after injury is accredited to the combined action of liver stem cells in liver basin and mature liver cells.

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: Hepatectomy, Hepatocytes, Tissue Engineering

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