This work was supported by the NIDDK KO1 DK075386 grant and the American Cancer Society RSG-09-075-01-MBC to Jun Sun.

This protocol includes three portions: bacterial culture, mouse gavage, and Salmonella detection.
1. Salmonella growth condition.
<ol>
	<li>Prepare the Salmonella Luria-Bertani broth (LB) plate, incubate at 37&deg; C overnight.</li>
	<li>Pick a clone from the LB plate and put into 7 ml LB in a 12 ml tube, and shake at 37&deg;C for about 5 hours.</li>
	<li>Inoculate 50 ml LB with 0.05 ml of a stationary phase culture and incubate at 37&deg;C without shaking for...

<ol>
	<li>Duan, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=beta-Catenin+activity+negatively+regulates+bacteria-induced+inflammation.">beta-Catenin activity negatively regulates bacteria-induced inflammation.</a> Lab Invest. 87 (6), 613-624 (2007).</li><li>Barthel, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pretreatment+of+mice+with+streptomycin+provides+a+Salmonella+enterica+serovar+Typhimurium+colitis+model+that+allows+analysis+of+both+pathogen+and+host.">Pretreatment of mice with streptomycin provides a Salmonella enterica serovar Typhimurium colitis model that allows analysis of both pathogen and host.</a> Infection and immunity. 71 (5), 2839-2858 (2003).</li><li>Miller, S. I., Mekalanos, J. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Constitutive+expression+of+the+phoP+regulon+attenuates+Salmonella+virulence+and+survival+within+macrophages.">Constitutive expression of the phoP regulon attenuates Salmonella virulence and survival within macrophages.</a> Journal of bacteriology. 172 (5), 2485-2490 (1990).</li><li>Valdez, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nramp1+expression+by+dendritic+cells+modulates+inflammatory+responses+during+Salmonella+Typhimurium+infection.">Nramp1 expression by dendritic cells modulates inflammatory responses during Salmonella Typhimurium infection.</a> Cell Microbiol. 10 (8), 1646-1661 (2008).</li><li>Woo, H., Okamoto, S., Guiney, D., Gunn, J. S., Fierer, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+model+of+Salmonella+colitis+with+features+of+diarrhea+in+SLC11A1+wild-type+mice.">A model of Salmonella colitis with features of diarrhea in SLC11A1 wild-type mice.</a> PLoS ONE. 3 (2), e1603-e1603 (2008).</li><li>Dangl, J. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+call-and-response:+how+Salmonella+learns+the+gospel+from+its+host.">Molecular call-and-response: how Salmonella learns the gospel from its host.</a> Trends Microbiol. 11 (6), 245-246 (2003).</li><li>Zaharik, M. L., Vallance, B. A., Puente, J. L., Gros, P., Finlay, B. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Host-pathogen+interactions:+Host+resistance+factor+Nramp1+up-regulates+the+expression+of+Salmonella+pathogenicity+island-2+virulence+genes.">Host-pathogen interactions: Host resistance factor Nramp1 up-regulates the expression of Salmonella pathogenicity island-2 virulence genes.</a> Proceedings of the National Academy of Sciences of the United States of America. 99, 15705-15710 (2002).</li><li>Townsend, P., Morton, D. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laboratory+Animal+Care+Policies+and+Regulations:+United+Kingdom.">Laboratory Animal Care Policies and Regulations: United Kingdom.</a> ILAR J. 37 (2), 68-74 (1995).</li><li>Olfert, E. D., Godson, D. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Humane+endpoints+for+infectious+disease+animal+models.">Humane endpoints for infectious disease animal models.</a> ILAR J. 41 (2), 99-104 (2000).</li><li>Ye, Z., Petrof, E. O., Boone, D., Claud, E. C., Sun, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Salmonella+effector+AvrA+regulation+of+colonic+epithelial+cell+inflammation+by+deubiquitination.">Salmonella effector AvrA regulation of colonic epithelial cell inflammation by deubiquitination.</a> Am J Pathol. 171 (3), 882-892 (2007).</li><li>Grassl, G. A., Valdez, Y., Bergstrom, K. S., Vallance, B. A., Finlay, B. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chronic+enteric+salmonella+infection+in+mice+leads+to+severe+and+persiste+nt+intestinal+fibrosis.">Chronic enteric salmonella infection in mice leads to severe and persiste nt intestinal fibrosis.</a> Gastroenterology. 134 (3), 768-780 (2008).</li><li>Sukupolvi, S., Edelstein, A., Rhen, M., Normark, S. J., Pfeifer, J. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+a+murine+model+of+chronic+Salmonella+infection.">Development of a murine model of chronic Salmonella infection.</a> Infection and immunity. 65 (2), 838-842 (1997).</li><li>. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Biosafety in Microbiological and Biomedical Laboratories (BMBL). , (2007).</li><li>Wu, S., Lu, R., Zhang, Y., Sun, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chronic+effects+of+a+Salmonella+type+III+secretion+effector+protein+AvrA+in+vivo.">Chronic effects of a Salmonella type III secretion effector protein AvrA in vivo.</a> PLoS ONE. , (2010).</li></ol>

No conflicts of interest declared.

To use this system, it is necessary for the researcher to learn how to gavage the animals. We detail a methodology for prepare bacterial culture and gavage the mice. We also show how to monitor the Salmonella persistence in the gastrointestinal (GI) tract. The critical steps in this protocol including: <ol> <li>Streptomycin-pretreatment: Streptomycin-pretreatment could get rid of some commensal gut flora and make the mice susceptible to the Salmonella infection2.</li> <li>Salmonell...

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">	
		
		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>HBSS</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>ABCD1234</td>
<td>&nbsp;</td>
<tr>
<td>Luria-Bertani broth</td>
<td>&nbsp;</td>
<td>BD</td>
<td>244610</td>
<td>&nbsp;</td>
<tr>
<td>Feeding needle</td>
<td>&nbsp;</td>
<td>Popper &amp; Sons, Inc</td>
<td>7920</td>
<td>&nbsp;</td>
<tr>
<td>Streptomycin </td>
<td>&nbsp;</td>
<td>MP biomedicals, LLC</td>
<td>100556</td>
<td>&nbsp;</td>
<tr>
<td>BBL CHROMagar Salmonella</td>
<td>&nbsp;</td>
<td>BD</td>
<td>214983</td>
<td>&nbsp;</td>
<tr>
<td>Disposable cell spreaders</td>
<td>&nbsp;</td>
<td>Biologix research company</td>
<td>65-1010</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

chronic salmonella infected mouse model

The bacterial infected mouse model is a powerful model system for studying areas such as infection, inflammation, immunology, signal transduction, and tumorigenesis. Many researchers have taken advantage of the colitis induced by Salmonella typhimurium for the studies on the early phase of inflammation and infection. However, only few reports are on the chronic infection in vivo. Mice with Salmonella persistent existence in the gastrointestinal tract allow us to explore the long-term host-bacterial interaction, signal transduction, and tumorigenesis. We have established a chronic bacterial infected mouse model with Salmonella typhimurium colonization in the mouse intestine over 6 months. To use this system, it is necessary for the researcher to learn how to prepare the bacterial culture and gavage the animals. We detail a methodology for prepare bacterial culture and gavage mice. We also show how to detect the Salmonella persistence in the gastrointestinal tract. Overall, this protocol will aid researchers using the bacterial infected mouse model to address fundamentally important biological and microbiological questions.

Watch this Scientific Journal Video about Chronic Salmonella Infected Mouse Model at JoVE.com

Chronic Salmonella Infected Mouse Model

Establish a chronic bacterial infected mouse model with persistent Salmonella typhimurium colonization in intestine for 27 weeks.

Chronic Salmonella Infected Mouse Model

The bacterial infected mouse model is a powerful model system for studying areas such as infection, inflammation, immunology, signal transduction, and ...

Research

JoVE Journal

Biology

17.1K visualizações.  University of Rochester. Estabelecer um modelo de camundongo bacteriana crônica infectados com persistente Salmonella Typhimurium colonização no intestino durante 27 semanas.