Индукционная мышиных воспаление кишечника с помощью приемных передачи эффекторных CD4<sup> +</sup> CD45RB<sup> Высокая</sup> Т-клеток в иммунодефицитных мышей
Summary
Here, we present a protocol to induce colonic inflammation in mice by adoptive transfer of syngeneic CD4+CD45RBhigh T cells into T and B cell deficient recipients. Clinical and histopathological features mimic human inflammatory bowel diseases. This method allows the study of the initiation of colonic inflammation and progression of disease.
Abstract
Есть много различных животных моделях, доступных для изучения патогенеза воспалительных заболеваний человека кишечника (ВБК), каждый со своими преимуществами и недостатками. Здесь мы опишем экспериментальную модель колита, который по инициативе приемных передачи сингенных селезенки CD4 + CD45RB высокой Т-клеток в дефицитных мышей-реципиентов Т и В клеток. CD4 + Т CD45RB высокой клеточная популяция, что в основном состоит из наивных эффекторных клеток способна индуцировать хронический кишечного воспаления, напоминающий ключевых аспектов человеческого IBD. Этот метод можно манипулировать, чтобы изучить аспекты начала заболевания и прогрессирования. Кроме того, он может быть использован для изучения функции врожденной, адаптивных и регуляторных популяциях клеток иммунной системы и роль экологических факторов, т.е. микрофлоры, кишечной воспаление. В этой статье мы проиллюстрируем методику для индукции колита с протоколом шаг за шагом. Это Includes видео демонстрация основных технических аспектов, необходимых для успешного развития этого мышиной модели экспериментального колита, для научно-исследовательских целей.
Introduction
The inflammatory bowel diseases (IBD) Crohn’s disease and ulcerative colitis result from an incompletely defined and complex interaction between host immune responses, genetic susceptibility, environmental factors, and the enteric luminal contents1. Recent genome-wide association studies report associations between immune cell regulatory genes and IBD susceptibility2,3. Both innate and adaptive immune cell intrinsic genes are represented in these studies, indicating a central role for these cell populations in IBD pathogenesis.
There currently exist more than 50 animal models of human IBD. While no one model perfectly phenocopies human IBD, many are useful for studying various aspects of human disease, including disease onset and progression and the wound-healing response. In the method described here, intestinal inflammation is initiated with syngeneic splenic CD4+CD45RBhigh T cell adoptive transfer into T and B cell deficient recipient mice4. The CD4+CD45RBhigh T cell population contains mainly naïve T cells primed for activation that are capable of inducing chronic small bowel and colonic inflammation. This method allows the researcher to modify key experimental variables, including both innate and adaptive immune cell populations, to answer biologically relevant questions relating to disease pathogenesis. Additionally, this method provides precise initiation of disease onset and a well-characterized experimental time course. This permits the kinetic study of clinical features of disease progression in mice. Intestinal inflammation induced by this method shares many features with human IBD, including chronic large and small bowel transmural inflammation, pathogenesis driven by cytokines such as TNF and IL-12, and systemic symptoms such as wasting5. Thus, it is an ideal model system for studying the pathogenesis of human IBD.
The method here describes in detail the protocol for inducing experimental colitis by adoptive transfer of CD4+CD45RBhigh T cells into Rag1-/- mice. We discuss key technical steps, expected results, optimization, and trouble-shooting. We address the required elements for the successful development of this murine model of intestinal inflammation for research purposes.
Protocol
Representative Results
Discussion
Здесь мы опишем протокол шаг за шагом, индуцирующий толстой воспаление у мышей приемных передачи CD4 + CD45RB + Т-клеток в иммунодефицитных мышей. Мы использовали C57BL / 6 доноров селезенки и сингенная RAG1 – / – мышей-реципиентов, хотя другие штаммы (например, BALB / с, 129S6 / S…
Declarações
The authors have nothing to disclose.
Acknowledgements
Эта работа была поддержана Американской гастроэнтерологической ассоциации (AGA) ученых-исследователей премии и болезнь Крона и колит фонда Америки (CCFA) Карьера премии в области развития (в СЗС), NIH NIDDK F30 DK089692 (ЭКС), и Университета Северной Каролины Центра желудочно-кишечного тракта биологии и болезни Грант P30 DK34987 (гистология ядро). UNC проточной цитометрии основной комплекс поддерживается частично в результате NCI центральный внутренний грантовой поддержки (P30CA016086) к UNC Lineberger всеобъемлющем онкологического центра. Мы благодарим Люк Б. Borst из Государственного университета Северной Каролины колледжа ветеринарной медицины за помощь в гистопатологического анализа и иммуногистохимии.
Materials
| Name of Reagent/ Equipment | Company | Catalog Number | Comments/Description |
| 10x PBS | Gibco | 14200075 | |
| 12x75mm round-bottom tube | Falcon | 352052 | |
| 15 ml conical | Corning | 430790 | |
| 26g x 3/8 Needle | BD Biosciences | 305110 | |
| 50 ml conical | Corning | 430828 | |
| 70 um Cell Strainer | Fisherbrand | 22363548 | |
| BD IMagnet | BD Biosciences | 552311 | |
| β-mercaptoethanol | Thermo Scientific | 35602 | |
| CD4-FITC IgG2b | eBioscience | 11-0041 | |
| CD45RB-PE IgG2a | BD Pharminogen | 553101 | |
| Complete Media | RPMI-1640, 1% Pen/Strep, 10% FBS, 0.0004% β-ME | ||
| FACS tube + strainer | BD Falcon | 352235 | |
| Glass Microscope Slides | Fisherbrand | 12550A3 | |
| Heat-inactivated FBS | Gemini | 100-106 | |
| Labeling Buffer | 1x PBS, 0.5% BSA, 2 mM EDTA | ||
| Lysis Buffer | 0.08% NH4Cl, 0.1% KHCO3, 1 mM EDTA | ||
| MoFlo XDP | Beckman Coulter | ||
| Mouse CD4 T lymphocyte Enrichment Set – DM | BD Biosciences | 558131 | |
| Mouse IgG2a-PE | BD Pharminogen | 553457 | |
| Mouse IgG2b-FITC | eBioscience | 11-4732 | |
| Pasteur pipet | Fisherbrand | 13-678-20D | |
| Penicillin-Streptomycin Solution, 100X | Corning Cellgro | 30-002-CI | |
| Petri Dish | Fisherbrand | 875713 | |
| Pure Ethanol 200 Proof | Decon Labs | 2705-HC | |
| RPMI-1640 | Gibco | 11-875-093 | |
| Syringe | BD Biosciences | 309597 | |
| Trypan blue | Corning Cellgro | 25-900-CI | |
| Wash Media | RPMI-1640, 1% Pen/Strep, 0.0004% β-ME |
Referências
- Xavier, R. J., Podolsky, D. K. Unravelling the pathogenesis of inflammatory bowel disease. Nature. 448 (7152), 427-434 (2007).
- Cho, J. H., Brant, S. R. Recent insights into the genetics of inflammatory bowel disease. Gastroenterology. 140 (6), 1704-1712 (2011).
- Jostins, L., et al. Host-microbe interactions have shaped the genetic architecture of inflammatory bowel disease. Nature. 491 (7422), 119-124 (2012).
- Powrie, F., Leach, M. W., Mauze, S., Caddle, L. B., Coffman, R. L. Phenotypically distinct subsets of CD4+ T cells induce or protect from chronic intestinal inflammation in C. B-17 scid mice. Int Immunol. 5 (11), 1461-1471 (1993).
- Ostanin, D. V., et al. T cell transfer model of chronic colitis: concepts, considerations, and tricks of the trade. Am J Physiol Gastrointest Liver Physiol. 296 (2), 135-146 (2009).
- Ma, B. W., et al. Routine habitat change: a source of unrecognized transient alteration of intestinal microbiota in laboratory mice. PLoS One. 7 (10), e47416 (2012).
- Read, S., Powrie, F. Induction of inflammatory bowel disease in immunodeficient mice by depletion of regulatory T cells. Curr Protoc Immunol. Chapter 15 (Unit 15 13), (1999).
- Maillard, M. H., et al. The Wiskott-Aldrich syndrome protein is required for the function of CD4(+)CD25(+)Foxp3(+) regulatory T cells. J Exp Med. 204 (2), 381-391 (2007).
- Hegazi, R. A., et al. Carbon monoxide ameliorates chronic murine colitis through a heme oxygenase 1-dependent pathway. J Exp Med. 202 (12), 1703-1713 (2005).
- Kole, A., et al. Type I IFNs regulate effector and regulatory T cell accumulation and anti-inflammatory cytokine production during T cell-mediated colitis. J Immunol. 191 (5), 2771-2779 (2013).
- Kobayashi, T., et al. NFIL3-deficient mice develop microbiota-dependent, IL-12/23-driven spontaneous colitis. J Immunol. 192 (4), 1918-1927 (2014).
- Steinbach, E. C., et al. Innate PI3K p110delta Regulates Th1/Th17 Development and Microbiota-Dependent Colitis. J Immunol. 192 (8), 3958-3968 (2014).
- Kobayashi, T., et al. NFIL3 is a regulator of IL-12 p40 in macrophages and mucosal immunity. J Immunol. 186 (8), 4649-4655 (2011).
- Leach, M. W., Bean, A. G., Mauze, S., Coffman, R. L., Powrie, F. Inflammatory bowel disease in C.B-17 scid mice reconstituted with the CD45RBhigh subset of CD4+ T cells. Am J Pathol. 148 (5), 1503-1515 (1996).
- Powrie, F., et al. Inhibition of Th1 responses prevents inflammatory bowel disease in scid mice reconstituted with CD45RBhi CD4. T cells. Immunity. 1 (7), 553-562 (1994).
- Read, S., Malmstrom, V., Powrie, F. Cytotoxic T lymphocyte-associated antigen 4 plays an essential role in the function of CD25(+)CD4(+) regulatory cells that control intestinal inflammation. J Exp Med. 192 (2), 295-302 (2000).
- Rogers, G. B., et al. Functional divergence in gastrointestinal microbiota in physically-separated genetically identical mice. Sci Rep. 4, 5437 (2014).
- Fukata, M., et al. The myeloid differentiation factor 88 (MyD88) is required for CD4+ T cell effector function in a murine model of inflammatory bowel disease. J Immunol. 180 (3), 1886-1894 (2008).
- Kurtz, C. C., et al. Extracellular adenosine regulates colitis through effects on lymphoid and nonlymphoid cells. Am J Physiol Gastrointest Liver Physiol. 307 (3), 338-346 (2014).
- Naganuma, M., et al. Cutting edge: Critical role for A2A adenosine receptors in the T cell-mediated regulation of colitis. J Immunol. 177 (5), 2765-2769 (2006).
- Ranatunga, D. C., et al. A protective role for human IL-10-expressing CD4+ T cells in colitis. J Immunol. 189 (3), 1243-1252 (2012).
- Srikrishna, G., et al. Carboxylated glycans mediate colitis through activation of NF-kappa. B. J Immunol. 175 (8), 5412-5422 (2005).
- Wang, F., et al. IFN-gamma-induced TNFR2 expression is required for TNF-dependent intestinal epithelial barrier dysfunction. Gastroenterology. 131 (4), 1153-1163 (2006).
