Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma

Kate Blease, Jane M. Schuh, Claudia Jakubzick, Nicholas W. Lukacs, Steven L. Kunkel, Bharat H. Joshi, Raj K. Puri, Mark Kaplan, Cory M. Hogaboam

Research output: Contribution to journalArticle

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Abstract

Signal transducer and activator of transcription 6 (Stat6) is critical for Th2-mediated responses during allergic airway disease. To investigate the role of Stat6 in fungus-induced airway hyperresponsiveness and remodeling, Stat6-deficient (Stat6-/-) and Stat6 wildtype (Stat6+/+) mice were sensitized to Aspergillus fumigatus and airway disease was subsequently assessed in both groups at days 21, 30, 38, and 44 after an intratracheal challenge with live A. Fumigatus conidia. At all times after conidia, histological analysis revealed an absence of goblet cell hyperplasia and markedly diminished peribronchial inflammation in Stat6-/- mice in contrast to Stat6+/+ mice. Airway hyperresponsiveness and peribronchial fibrosis in Stat6-/- mice were significantly reduced at day 21 after conidia compared with Stat6+/+ mice, but both groups exhibited significant, similar increases in these parameters at all subsequent times after conidia. In separate experiments, IL-13-responsive cells in Stat6-/- mice were targeted via the daily intranasal administration of 200 ng of IL-13-PE38QQR (IL13-PE), comprised of human I -13 and a derivative of Pseudomonas exotoxin, from days 38 to 44 after the conidia challenge. IL13-PE treatment abolished airway hyperresponsiveness, but not peribronchial fibrosis in Stat6-/- mice. Taken together, these data demonstrate that the chronic development of airway hyperresponsiveness during fungal asthma is IL-13 dependent but Stat6-independent.

Original languageEnglish
Pages (from-to)481-490
Number of pages10
JournalAmerican Journal of Pathology
Volume160
Issue number2
StatePublished - 2002

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STAT6 Transcription Factor
Fibrosis
Asthma
Fungal Spores
Interleukin-13
Airway Remodeling
Intranasal Administration
Exotoxins
Aspergillus fumigatus
Goblet Cells
Pseudomonas

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Blease, K., Schuh, J. M., Jakubzick, C., Lukacs, N. W., Kunkel, S. L., Joshi, B. H., ... Hogaboam, C. M. (2002). Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma. American Journal of Pathology, 160(2), 481-490.

Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma. / Blease, Kate; Schuh, Jane M.; Jakubzick, Claudia; Lukacs, Nicholas W.; Kunkel, Steven L.; Joshi, Bharat H.; Puri, Raj K.; Kaplan, Mark; Hogaboam, Cory M.

In: American Journal of Pathology, Vol. 160, No. 2, 2002, p. 481-490.

Research output: Contribution to journalArticle

Blease, K, Schuh, JM, Jakubzick, C, Lukacs, NW, Kunkel, SL, Joshi, BH, Puri, RK, Kaplan, M & Hogaboam, CM 2002, 'Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma', American Journal of Pathology, vol. 160, no. 2, pp. 481-490.
Blease K, Schuh JM, Jakubzick C, Lukacs NW, Kunkel SL, Joshi BH et al. Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma. American Journal of Pathology. 2002;160(2):481-490.
Blease, Kate ; Schuh, Jane M. ; Jakubzick, Claudia ; Lukacs, Nicholas W. ; Kunkel, Steven L. ; Joshi, Bharat H. ; Puri, Raj K. ; Kaplan, Mark ; Hogaboam, Cory M. / Stat6-deficient mice develop airway hyperresponsiveness and peribronchial fibrosis during chronic fungal asthma. In: American Journal of Pathology. 2002 ; Vol. 160, No. 2. pp. 481-490.
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abstract = "Signal transducer and activator of transcription 6 (Stat6) is critical for Th2-mediated responses during allergic airway disease. To investigate the role of Stat6 in fungus-induced airway hyperresponsiveness and remodeling, Stat6-deficient (Stat6-/-) and Stat6 wildtype (Stat6+/+) mice were sensitized to Aspergillus fumigatus and airway disease was subsequently assessed in both groups at days 21, 30, 38, and 44 after an intratracheal challenge with live A. Fumigatus conidia. At all times after conidia, histological analysis revealed an absence of goblet cell hyperplasia and markedly diminished peribronchial inflammation in Stat6-/- mice in contrast to Stat6+/+ mice. Airway hyperresponsiveness and peribronchial fibrosis in Stat6-/- mice were significantly reduced at day 21 after conidia compared with Stat6+/+ mice, but both groups exhibited significant, similar increases in these parameters at all subsequent times after conidia. In separate experiments, IL-13-responsive cells in Stat6-/- mice were targeted via the daily intranasal administration of 200 ng of IL-13-PE38QQR (IL13-PE), comprised of human I -13 and a derivative of Pseudomonas exotoxin, from days 38 to 44 after the conidia challenge. IL13-PE treatment abolished airway hyperresponsiveness, but not peribronchial fibrosis in Stat6-/- mice. Taken together, these data demonstrate that the chronic development of airway hyperresponsiveness during fungal asthma is IL-13 dependent but Stat6-independent.",
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AB - Signal transducer and activator of transcription 6 (Stat6) is critical for Th2-mediated responses during allergic airway disease. To investigate the role of Stat6 in fungus-induced airway hyperresponsiveness and remodeling, Stat6-deficient (Stat6-/-) and Stat6 wildtype (Stat6+/+) mice were sensitized to Aspergillus fumigatus and airway disease was subsequently assessed in both groups at days 21, 30, 38, and 44 after an intratracheal challenge with live A. Fumigatus conidia. At all times after conidia, histological analysis revealed an absence of goblet cell hyperplasia and markedly diminished peribronchial inflammation in Stat6-/- mice in contrast to Stat6+/+ mice. Airway hyperresponsiveness and peribronchial fibrosis in Stat6-/- mice were significantly reduced at day 21 after conidia compared with Stat6+/+ mice, but both groups exhibited significant, similar increases in these parameters at all subsequent times after conidia. In separate experiments, IL-13-responsive cells in Stat6-/- mice were targeted via the daily intranasal administration of 200 ng of IL-13-PE38QQR (IL13-PE), comprised of human I -13 and a derivative of Pseudomonas exotoxin, from days 38 to 44 after the conidia challenge. IL13-PE treatment abolished airway hyperresponsiveness, but not peribronchial fibrosis in Stat6-/- mice. Taken together, these data demonstrate that the chronic development of airway hyperresponsiveness during fungal asthma is IL-13 dependent but Stat6-independent.

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