Modelling asthma in macaques: longitudinal changes in cellular and molecular markers

• Published in: The European respiratory journal Vol. 37; no. 3; pp. 541 - 552
• Main Authors: AYANOGLU, G, DESAI, B, WARDLE, R. L, FICK, R. B, GREIN, J, DE WAAL MALEFYT, R, MATTSON, J, MCCLANAHAN, T, OLMSTEAD, S, REECE, S. P, VAN SCOTT, M. R
• Format: Journal Article
• Language: English
• Published: Leeds Maney 01-03-2011
• Subjects: Adrenal Cortex Hormones - pharmacology; Allergens; Animals; Asthma - pathology; Biological and medical sciences; Biomarkers - metabolism; Bones, joints and connective tissue. Antiinflammatory agents; Bronchoalveolar Lavage; Chronic obstructive pulmonary disease, asthma; Disease Models, Animal; Flow Cytometry - methods; Gene Expression Regulation; Humans; Immunoglobulin E - metabolism; Killer Cells, Natural - cytology; Lung - physiology; Lymphocytes - cytology; Macaca; Medical sciences; Mites; Pharmacology. Drug treatments; Pneumology; Steroids; Lung disease; Corticosteroid; Respiratory disease; Molecular marker; corticosteroid treatment; primate model; Asthma; Natural killer cell; Vertebrata; Mammalia; Treatment; Primates; Bronchus disease; Models; Obstructive pulmonary disease; natural killer T-cell; Pneumology
• ISSN: 0903-1936; 1399-3003
• DOI: 10.1183/09031936.00047410

The aim of the present study was to determine whether systemic sensitisation and chronic aeroallergen challenge in macaques replicate the classical and emerging immunology and molecular pathology of human asthma. Macaques were immunised and periodically challenged over 2 yrs with house dust mite allergen. At key time-points, serum, bronchoalveolar lavage (BAL) and bronchial biopsies were assayed for genes, proteins and lymphocyte subpopulations relevant to clinical asthma. Immunisation and periodic airway challenge induced changes in immunoglobulin E, airway physiology and eosinophilia consistent with chronic, dual-phase asthma. Sensitisation increased interleukin (IL)-1β and -6 concentrations in serum, and IL-13 expression in BAL cells. Airway challenge increased: early expression of IL-5, -6, -13 and -19, and eotaxin; and variable late-phase expression of IL-4, -5 and -13, and thymus- and activation-regulated chemokine in BAL cells. CD4+ lymphocytes comprised 30% of the CD3+ cells in BAL, increasing to 50% in the late phase. Natural killer T-cells represented <3% of the CD3+ cells. Corticosteroid treatment reduced serum histamine levels, percentage of CD4+ cells and monocyte-derived chemokine expression, while increasing CD3+ and CD8+ cells in BAL. Sensitisation and periodic aeroallergen challenge of cynomolgus macaques results in physiological, cellular, molecular and protein phenotypes, and therapeutic responses observed in human asthma, providing a model system useful in target and biomarker discovery, and translational asthma research.