Thymic Stromal Lymphopoetin-Induced Expression of the Endogenous Inhibitory Enzyme SLPI Mediates Recovery from Colonic Inflammation

Colin Reardon, Matthias Lechmann, Anne Brüstle, Melanie Gareau, Naomi Shuman, Dana Philpott, Steven F. Ziegler, Tak W. Mak

Research output: Contribution to journalArticle

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Abstract

Thymic stromal lymphopoetin (TSLP) influences numerous immune functions, including those in the colonic mucosa. Here we report that TSLP-deficient (Tslp-/-) mice did not exhibit increased inflammation during dextran sodium sulfate (DSS)-induced colitis but failed to recover from disease, resulting in death. Increased localized neutrophil elastase (NE) activity during overt inflammation was observed in Tslp-/- mice and was paralleled by reduced expression of an endogenous inhibitor, secretory leukocyte peptidase inhibitor (SLPI). Pharmacological inhibition of NE or treatment with rSLPI reduced DSS-induced mortality in Tslp-/- mice. Signaling through TSLPR on nonhematopoietic cells was sufficient for recovery from DSS-induced colitis. Expression of the receptor occurred on intestinal epithelial cells (IEC), with stimulation inducing SLPI expression. Therefore, TSLP is critical in mediating mucosal healing after insult and functions in a nonredundant capacity that is independent of restraining T helper 1 (Th1) and Th17 cell cytokine production.

Original languageEnglish (US)
Pages (from-to)223-235
Number of pages13
JournalImmunity
Volume35
Issue number2
DOIs
StatePublished - Aug 26 2011
Externally publishedYes

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Secretory Leukocyte Peptidase Inhibitor
Dextran Sulfate
Leukocyte Elastase
Colitis
Inflammation
Enzymes
Th17 Cells
Th1 Cells
Mucous Membrane
Epithelial Cells
Pharmacology
Cytokines
Mortality

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases
  • Immunology

Cite this

Thymic Stromal Lymphopoetin-Induced Expression of the Endogenous Inhibitory Enzyme SLPI Mediates Recovery from Colonic Inflammation. / Reardon, Colin; Lechmann, Matthias; Brüstle, Anne; Gareau, Melanie; Shuman, Naomi; Philpott, Dana; Ziegler, Steven F.; Mak, Tak W.

In: Immunity, Vol. 35, No. 2, 26.08.2011, p. 223-235.

Research output: Contribution to journalArticle

Reardon, Colin ; Lechmann, Matthias ; Brüstle, Anne ; Gareau, Melanie ; Shuman, Naomi ; Philpott, Dana ; Ziegler, Steven F. ; Mak, Tak W. / Thymic Stromal Lymphopoetin-Induced Expression of the Endogenous Inhibitory Enzyme SLPI Mediates Recovery from Colonic Inflammation. In: Immunity. 2011 ; Vol. 35, No. 2. pp. 223-235.
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