Macrophage migration inhibitory factor deficiency in chronic obstructive pulmonary disease.
The pathogenesis of chronic obstructive pulmonary disease (COPD) remains poorly understood. Cellular senescence and apoptosis contribute to the development of COPD; however, crucial regulators of these underlying mechanisms remain unknown. Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine that antagonizes both apoptosis and premature senescence and may be important in the pathogenesis of COPD. This study examines the role of MIF in the pathogenesis of COPD. Mice deficient in MIF (Mif(-/-)) or the MIF receptor CD74 (Cd74(-/-)) and wild-type (WT) controls were aged for 6 mo. Both Mif(-/-) and Cd74(-/-) mice developed spontaneous emphysema by 6 mo of age compared with WT mice as measured by lung volume and chord length. This was associated with activation of the senescent pathway markers p53/21 and p16. Following exposure to cigarette smoke, Mif(-/-) mice were more susceptible to the development of COPD and apoptosis compared with WT mice. MIF plasma concentrations were measured in a cohort of 224 human participants. Within a subgroup of older current and former smokers (n = 72), MIF concentrations were significantly lower in those with COPD [8.8, 95%CI (6.7-11.0)] compared with those who did not exhibit COPD [12.7 ng/ml, 95%CI (10.6-14.8)]. Our results suggest that both MIF and the MIF receptor CD74 are required for maintenance of normal alveolar structure in mice and that decreases in MIF are associated with COPD in human subjects.
Section of Pulmonary, Critical Care, and Sleep Medicine, Yale Univ. School of Medicine, PO Box 208057, 300 Cedar St., New Haven, CT 06520-8057. patty.lee@yale.edu.
Maor
M
Sauler
Lin
L
Leng
Mark
M
Trentalange
Maria
M
Haslip
Peiying
P
Shan
Marta
M
Piecychna
Yi
Y
Zhang
Nathaniel
N
Andrews
Praveen
P
Mannam
Heather
H
Allore
Terri
T
Fried
Richard
R
Bucala
Patty J
PJ
Lee
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D016922:Cellular Senescence; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000378:metabolism; D050759:Cyclin-Dependent Kinase Inhibitor p21 / Q000378:metabolism; D004646:Emphysema / Q000235:genetics; D005260:Female; D006801:Humans; D019746:Intramolecular Oxidoreductases / Q000172:deficiency / Q000235:genetics*; D008168:Lung / Q000378:metabolism; D008263:Macrophage Migration-Inhibitory Factors / Q000172:deficiency / Q000235:genetics*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000235:genetics*; D011971:Receptors, Immunologic / Q000097:blood* / Q000172:deficiency / Q000235:genetics; D012906:Smoke / Q000009:adverse effects; D012907:Smoking / Q000009:adverse effects; D014026:Nicotiana / Q000009:adverse effects; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism; D055815:Young Adult
D019941:Cyclin-Dependent Kinase Inhibitor p16; D050759:Cyclin-Dependent Kinase Inhibitor p21; D008263:Macrophage Migration-Inhibitory Factors; D011971:Receptors, Immunologic; D012906:Smoke; D016159:Tumor Suppressor Protein p53; C033184:macrophage migration inhibitory factor receptor; D019746:Intramolecular Oxidoreductases; C515598:MIF protein, human
CD74; COPD; MIF; apoptosis; emphysema; senescence