V. Lama and S. Phan, The Extrapulmonary Origin of Fibroblasts: Stem/Progenitor Cells and Beyond, Proceedings of the American Thoracic Society, vol.3, issue.4, pp.373-376, 2006.
DOI : 10.1513/pats.200512-133TK

A. Moeller, S. Gilpin, K. Ask, G. Cox, and D. Cook, Circulating Fibrocytes Are an Indicator of Poor Prognosis in Idiopathic Pulmonary Fibrosis, American Journal of Respiratory and Critical Care Medicine, vol.179, issue.7, pp.588-594, 2009.
DOI : 10.1164/rccm.200810-1534OC

N. Hashimoto, J. H. Liu, T. Chensue, S. Phan, and S. , Bone marrow???derived progenitor cells in pulmonary fibrosis, Journal of Clinical Investigation, vol.113, issue.2, pp.243-252, 2004.
DOI : 10.1172/JCI200418847

R. Bucala, L. Spiegel, J. Chesney, M. Hogan, and A. Cerami, Circulating fibrocytes define a new leukocyte subpopulation that mediates tissue repair, Mol Med, vol.1, pp.71-81, 1994.

C. Metz, Fibrocytes: a unique cell population implicated in wound healing, Cellular and Molecular Life Sciences (CMLS), vol.60, issue.7, pp.1342-1350, 2003.
DOI : 10.1007/s00018-003-2328-0

S. Mattoli, A. Bellini, and M. Schmidt, The Role of a Human Hematopoietic Mesenchymal Progenitor in Wound Healing and Fibrotic Diseases and Implications for Therapy, Current Stem Cell Research & Therapy, vol.4, issue.4, pp.266-80, 2009.
DOI : 10.2174/157488809789649232

B. Moore, J. Kolodsick, V. Thannickal, K. Cooke, and T. Moore, CCR2-Mediated Recruitment of Fibrocytes to the Alveolar Space after Fibrotic Injury, The American Journal of Pathology, vol.166, issue.3, pp.675-684, 2005.
DOI : 10.1016/S0002-9440(10)62289-4

D. Pilling, D. Roife, M. Wang, S. Ronkainen, and J. Crawford, Reduction of Bleomycin-Induced Pulmonary Fibrosis by Serum Amyloid P, The Journal of Immunology, vol.179, issue.6, pp.4035-4044, 2007.
DOI : 10.4049/jimmunol.179.6.4035

E. Tourkina, M. Bonner, J. Oates, A. Hofbauer, and M. Richard, Altered monocyte and fibrocyte phenotype and function in scleroderma interstitial lung disease: reversal by caveolin-1 scaffolding domain peptide, Fibrogenesis & Tissue Repair, vol.4, issue.1, p.15, 2011.
DOI : 10.1002/art.1780230510

C. Quesnel, P. Piednoir, J. Gelly, L. Nardelli, and M. Garnier, Alveolar fibrocyte percentage is an independent predictor of poor outcome in patients with acute lung injury*, Critical Care Medicine, vol.40, issue.1, pp.21-29, 2012.
DOI : 10.1097/CCM.0b013e31822d718b

C. Quesnel, S. Marchand-adam, A. Fabre, J. Marchal-somme, and I. Philip, Regulation of hepatocyte growth factor secretion by fibroblasts in patients with acute lung injury, AJP: Lung Cellular and Molecular Physiology, vol.294, issue.2, pp.334-343, 2008.
DOI : 10.1152/ajplung.00096.2007

G. Raghu, H. Collard, J. Egan, F. Martinez, and J. Behr, An Official ATS/ERS/JRS/ALAT Statement: Idiopathic Pulmonary Fibrosis: Evidence-based Guidelines for Diagnosis and Management, American Journal of Respiratory and Critical Care Medicine, vol.183, issue.6, pp.788-824, 2011.
DOI : 10.1164/rccm.2009-040GL

E. Kazerooni, F. Martinez, A. Flint, D. Jamadar, and B. Gross, Thin-section CT obtained at 10-mm increments versus limited three-level thin-section CT for idiopathic pulmonary fibrosis: correlation with pathologic scoring., American Journal of Roentgenology, vol.169, issue.4, pp.977-983, 1997.
DOI : 10.2214/ajr.169.4.9308447

H. Collard, B. Moore, K. Flaherty, K. Brown, and R. Kaner, Acute Exacerbations of Idiopathic Pulmonary Fibrosis, American Journal of Respiratory and Critical Care Medicine, vol.176, issue.7, pp.636-643, 2007.
DOI : 10.1164/rccm.200703-463PP

B. Ley, H. Collard, T. King, and J. , Clinical Course and Prediction of Survival in Idiopathic Pulmonary Fibrosis, American Journal of Respiratory and Critical Care Medicine, vol.183, issue.4, pp.431-440, 2011.
DOI : 10.1164/rccm.201006-0894CI

C. Quesnel, L. Nardelli, P. Piednoir, V. Lecon, and J. Marchal-somme, Alveolar fibroblasts in acute lung injury: biological behaviour and clinical relevance, European Respiratory Journal, vol.35, issue.6, pp.1312-1321, 2010.
DOI : 10.1183/09031936.00074709

R. Reilkoff, R. Bucala, and E. Herzog, Fibrocytes: emerging effector cells in chronic inflammation, Nature Reviews Immunology, vol.23, issue.6, pp.427-435, 2011.
DOI : 10.1038/nri2990

A. Fujiwara, H. Kobayashi, M. Masuya, M. Maruyama, and S. Nakamura, Correlation between circulating fibrocytes, and activity and progression of interstitial lung diseases, Respirology, vol.164, issue.4, pp.693-701, 2012.
DOI : 10.1111/j.1440-1843.2012.02167.x

Y. Gan, R. Reilkoff, X. Peng, T. Russell, and Q. Chen, Role of semaphorin 7a signaling in transforming growth factor ?1-induced lung fibrosis and scleroderma-related interstitial lung disease, Arthritis & Rheumatism, vol.106, issue.8, pp.2484-2494, 2011.
DOI : 10.1002/art.30386

A. Andersson-sjoland, C. De-alba, K. Nihlberg, C. Becerril, and R. Ramirez, Fibrocytes are a potential source of lung fibroblasts in idiopathic pulmonary fibrosis, The International Journal of Biochemistry & Cell Biology, vol.40, issue.10, pp.2129-2140, 2008.
DOI : 10.1016/j.biocel.2008.02.012

S. Mattoli, A. Bellini, and M. Schmidt, The Role of a Human Hematopoietic Mesenchymal Progenitor in Wound Healing and Fibrotic Diseases and Implications for Therapy, Current Stem Cell Research & Therapy, vol.4, issue.4, pp.266-280, 2009.
DOI : 10.2174/157488809789649232

S. Maharaj, E. Baroke, J. Gauldie, and M. Kolb, Fibrocytes in chronic lung disease ? Facts and controversies, Pulmonary Pharmacology & Therapeutics, vol.25, issue.4, pp.263-267, 2012.
DOI : 10.1016/j.pupt.2011.09.002

J. Marchal-somme, Y. Uzunhan, S. Marchand-adam, M. Kambouchner, and D. Valeyre, Dendritic Cells Accumulate in Human Fibrotic Interstitial Lung Disease, American Journal of Respiratory and Critical Care Medicine, vol.176, issue.10, pp.1007-1014, 2007.
DOI : 10.1164/rccm.200609-1347OC

A. Medina and A. Ghahary, Fibrocytes can be reprogrammed to promote tissue remodeling capacity of dermal fibroblasts, Molecular and Cellular Biochemistry, vol.15, issue.1, pp.11-21, 2010.
DOI : 10.1007/s11010-010-0524-4

A. Valenzuela-fernandez, T. Planchenault, F. Baleux, I. Staropoli, and K. Le-barillec, Leukocyte Elastase Negatively Regulates Stromal Cell-derived Factor-1 (SDF-1)/CXCR4 Binding and Functions by Amino-terminal Processing of SDF-1 and CXCR4, Journal of Biological Chemistry, vol.277, issue.18, pp.15677-15689, 2002.
DOI : 10.1074/jbc.M111388200

URL : https://hal.archives-ouvertes.fr/pasteur-00166872

R. Rao, T. Betz, D. Lamont, M. Kim, and S. Shaw, Elastase Release by Transmigrating Neutrophils Deactivates Endothelial-bound SDF-1?? and Attenuates Subsequent T Lymphocyte Transendothelial Migration, The Journal of Experimental Medicine, vol.63, issue.6, pp.713-724, 2004.
DOI : 10.1172/JCI200315994

URL : https://hal.archives-ouvertes.fr/pasteur-00166857

V. Lama, L. Smith, L. Badri, A. Flint, and A. Andrei, Evidence for tissue-resident mesenchymal stem cells in human adult lung from studies of transplanted allografts, Journal of Clinical Investigation, vol.117, issue.4, pp.989-996, 2007.
DOI : 10.1172/JCI29713

E. Fireman, I. Shahar, S. Shoval, G. Messer, and S. Dvash, Morphological and Biochemical Properties of Alveolar Fibroblasts in Interstitial Lung Diseases, Lung, vol.179, issue.2, pp.105-117, 2001.
DOI : 10.1007/s004080000051