JoVE Logo
Faculty Resource Center

Sign In

Summary

Abstract

Protocol

Discussion

Acknowledgements

Materials

References

Immunology and Infection

鞭虫感染muris:在肠道内的2型免疫和炎症模型

Published: May 24th, 2011

DOI:

10.3791/2774

1The Biomedical Research Centre, University of British Columbia, 2Department of Pathology and Laboratory Medicine, University of British Columbia
* These authors contributed equally

鞭muris感染肠道模型是一种Th2型免疫抗小鼠Th2反应产生保护和易感小鼠产生一种病态的Th1反应。

鞭muris是一个自然的小鼠的病原体和鞭虫物种感染人类和牲畜 1的生物学和抗原性相似。感染性虫卵经口灌胃,在远端小肠孵化,侵入肠上皮细胞(IECS),该行盲肠和近端结肠隐窝和成熟后的蠕虫释放到环境中鸡蛋1。这个模型是一个功能强大的工具来检查因素控制的CD4 +辅助性T细胞(TH)的激活,以及在肠上皮细胞的变化。免疫反应的抗近交系C57BL / 6和BALB / C,如发生的特点,是由Th2细胞极化的细胞因子(IL - 4,IL - 5和IL - 13)和驱逐的蠕虫病毒,而Th1相关的细胞因子(IL -12,IL - 18,IFN -γ)促进在遗传易感性的AKR / J 小鼠 2-6的慢性感染。 Th2细胞因子,促进生理肠道微环境的变化,包括IECS的快速周转,杯状细胞的分化,招聘和上皮通透性和平滑肌收缩,所有这一切都已经在蠕虫驱逐7-15牵连的变化。在这里,我们详细为传播鞭muris可以在随后的实验中使用的鸡蛋的的协议。我们还提供了为感染后的分析建议的样品实验收获。总体而言,该协议将提供的基本工具的研究人员,执行鞭muris小鼠感染模型,它可以用来解决有关的问题在胃肠道以及免疫效应功能的IECS钍倾向。

1。传播鞭muris

  1. 要生成新的批次的鞭muris蛋,感染20-30免疫缺陷小鼠(如NOD.Cg Prkdc SCID IL2RG tm1Wjl / SZJ(NSG)或129S6/SvEvTac-Rag2 tm1Fwa(RAG2 - / - ))或遗传易感性小鼠(如AKR / J)6-8周约300鞭灌胃muris鸡蛋。
  2. CO 2窒息牺牲后32-35天的小鼠。
  3. 揭露鼠标的腹侧方和湿用70%乙醇的腹部。
  4. 使用镊子把握腹部皮肤,使一个小切口,?.......

Log in or to access full content. Learn more about your institution’s access to JoVE content here

该协议的细节了一个标准的高剂量急性鞭muris感染研究者的要求,可以修改。例如,老鼠可以牺牲和组织在不同的日子里收获。要确定小鼠已成功建立了完整的蠕虫负担,他们可以被牺牲的第14天,在这一点所有小鼠,应随身携带了约200蠕虫的负担。也可被感染小鼠的32天检测到任何蠕虫将达到成熟阶段,并会维持其生命期限的主机。此外,该协议可以适应慢性鞭虫muris感染模型。要?.......

Log in or to access full content. Learn more about your institution’s access to JoVE content here

这项工作是支持的加拿大卫生研究院(MSH - 95368,澳门币89773和MOP - 106623,以锆石)和加拿大创新基金会。 SCM是一个胃肠病学博士后CIHR /加拿大协会的收件人。锆石是一种新CIHR调查。

....

Log in or to access full content. Learn more about your institution’s access to JoVE content here

NameCompanyCatalog NumberComments
试剂名称公司目录编号评论
动物饲养针(18 × 1 ½“) 波普尔 7912
光滑的弯钳 Roboz RS - 5047
DMEM培养液 Gibco公司 11965
NOD.Cg Prkdc SCID IL2R gtm1Wjl / SZJ(NSG) 杰克逊实验室 005557 这些都是我们所用的老鼠,但是,任何免疫缺陷小鼠或敏感品系的工作。
RNAlater Qiagen公司 76104
2毫升管爱思进 MCT - 200 - C
15毫升管 352096
6孔板 353046
多聚甲醛电子显微学 15710
α-RELMβ抗体 PeproTech公司 0694270Rb

  1. Cliffe, L. J., Grencis, R. K. The Trichuris muris system: a paradigm of resistance and susceptibility to intestinal nematode infection. Adv. Parasitol. 57, 255-307 (2004).
  2. Else, K. J., Finkelman, F. D., Maliszewski, C. R., Grencis, R. K. Cytokine-mediated regulation of chronic intestinal helminth infection. J. Exp. Med. 179, 347-351 (1994).
  3. Bancroft, A. J., Grencis, R. K. Th1 and Th2 cells and immunity to intestinal helminths. Chem. Immunol. 71, 192-208 (1998).
  4. Bancroft, A. J., McKenzie, A. N., Grencis, R. K. A critical role for IL-13 in resistance to intestinal nematode infection. J. Immunol. 160, 3453-3461 (1998).
  5. Helmby, H., Takeda, K., Akira, S., Grencis, R. K. Interleukin (IL)-18 promotes the development of chronic gastrointestinal helminth infection by downregulating IL-13. J. Exp. Med. 194, 355-364 (2001).
  6. Owyang, A. M. Interleukin 25 regulates type 2 cytokine-dependent immunity and limits chronic inflammation in the gastrointestinal tract. J. Exp. Med. 203, 843-849 (2006).
  7. Artis, D. RELMβ/FIZZ2 is a goblet cell-specific immune-effector molecule in the gastrointestinal tract. Proc. Natl. Acad. Sci. U. S. A. 101, 13596-13600 (2004).
  8. Datta, R. Identification of novel genes in intestinal tissue that are regulated after infection with an intestinal nematode parasite. Infect. Immun. 73, 4025-4033 (2005).
  9. Cliffe, L. J. Accelerated intestinal epithelial cell turnover: a new mechanism of parasite expulsion. Science. 308, 1463-1465 (2005).
  10. Artis, D. New weapons in the war on worms: identification of putative mechanisms of immune-mediated expulsion of gastrointestinal nematodes. Int. J. Parasitol. 36, 723-733 (2006).
  11. Finkelman, F. D. Cytokine regulation of host defense against parasitic gastrointestinal nematodes: lessons from studies with rodent models. Annu. Rev. Immunol. 15, 505-533 (1997).
  12. Grencis, R. K. Enteric helminth infection: immunopathology and resistance during intestinal nematode infection. Chem. Immunol. 66, 41-61 (1997).
  13. Khan, W. I. Modulation of intestinal muscle contraction by interleukin-9 (IL-9) or IL-9 neutralization: correlation with worm expulsion in murine nematode infections. Infect. Immun. 71, 2430-2438 (2003).
  14. Khan, W. I., Blennerhasset, P., Ma, C., Matthaei, K. I., Collins, S. M. Stat6 dependent goblet cell hyperplasia during intestinal nematode infection. Parasite Immunol. 23, 39-42 (2001).
  15. Akiho, H., Blennerhassett, P., Deng, Y., Collins, S. M. Role of IL-4, IL-13, and STAT6 in inflammation-induced hypercontractility of murine smooth muscle cells. Am. J. Physiol. Gastrointest. Liver Physiol. 282, 226-2232 (2002).
  16. Kopper, J. J., Mansfield, L. S. Development of improved methods for delivery of Trichuris muris to the laboratory mouse. Parasitol. Res. 107, 1103-1113 (2010).
  17. Bancroft, A. J., Else, K. J., Grencis, R. K. Low-level infection with Trichuris muris significantly affects the polarization of the CD4 response. Eur. J. Immunol. 24, 3113-3118 (1994).

Tags

51 muris TH2

This article has been published

Video Coming Soon

JoVE Logo

Privacy

Terms of Use

Policies

Research

Education

ABOUT JoVE

Copyright © 2024 MyJoVE Corporation. All rights reserved