Tessa Bergsbaken

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We report that oral infection with Yersinia pseudotuberculosis results in the development of two distinct populations of pathogen-specific CD8(+) tissue-resident memory T cells (TRM cells) in the lamina propria. CD103(-) T cells did not require transforming growth factor-β (TGF-β) signaling but were true resident memory cells. Unlike CD103(+)CD8(+) T cells,(More)
Infection of macrophages by Yersinia species results in YopJ-dependent apoptosis, and naïve macrophages are highly susceptible to this form of cell death. Previous studies have demonstrated that macrophages activated with lipopolysaccharide (LPS) prior to infection are resistant to YopJ-dependent cell death; we found this simultaneously renders macrophages(More)
The complement system is an essential component of host defense against pathogens. Previous research in our laboratory identified StcE, a metalloprotease secreted by Escherichia coli O157:H7 that cleaves the serpin C1 esterase inhibitor (C1-INH), a major regulator of the classical complement cascade. Analyses of StcE-treated C1-INH activity revealed that(More)
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