SUMMARY
Circulating fibrocytes (CFs) exhibit an extraordinary degree of plasticity and growth factor repertoire, and because of this they have been investigated for their role in the repair and regeneration of damaged tissues, but yet not adequately for their role in wound healing. In the present study, CFs were co-cultured with keratinocytes (KCs) or fibroblasts (Fbs) and the influences of CFs on the growth, proliferation and migration of KCs and Fbs were investigated. Our results showed that the CFs in the co-culture system could inhibit the growth, proliferation and migration of KCs, while CFs promoted the growth and proliferation of Fbs. Our study demonstrates that CFs can regulate the functions of Fbs, which may be a possible cause of fibrosis.
KEY WORDS
circulating fibrocytes; cell interaction; keratinocytes; fibroblasts; wound healing
REFERENCES
Bellini A, Mattoli S. The role of the fibrocyte, a bone marrow-derived mesenchymal progenitor, in reactive and reparative fibroses. Lab Invest. 87: 858-870, 2007. [CrossRef]
Bucala R, Spiegel LA, Chesney J, Hogan M, Cerami A. Circulating fibrocytes define a new leukocyte subpopulation that mediates tissue repair. Mol Med. 1: 71-81, 1994.
Chesney J, Bucala R. Peripheral blood fibrocytes: mesenchymal precursor cells and the pathogenesis of fibrosis. Curr Rheumatol Rep. 2: 501-505, 2000.
Chesney J, Bacher M, Bender A, Bucala R. The peripheral blood fibrocyte is a potent antigen-presenting cell capable of priming naive T cells in situ. Proc Natl Acad Sci USA. 94: 6307-6312, 1997.
Chesney J, Metz C, Stavitsky AB, Bacher M, Bucala R. Regulated production of type I collagen and inflammatory cytokines by peripheral blood fibrocytes. J Immunol. 160: 419-425, 1998.
Cowper SE. Nephrogenic fibrosing dermopathy: the first 6 years. Curr Opin Rheumatol. 15: 785-790, 2003.
Direkze NC, Forbes SJ, Brittan M, Hunt T, Jeffery R, Preston SL, Poulsom R, Hodivala-Dilke K, Alison MR, Wright NA. Multiple organ engraftment by bone-marrow-derived myofibroblasts and fibroblasts in bone-marrow-transplanted mice. Stem Cells. 21: 514-520, 2003. [CrossRef]
Epperly MW, Guo H, Gretton JE, Greenberger JS. Bone marrow origin of myofibroblasts in irradiation pulmonary fibrosis. Am J Respir Cell Mol Biol. 29: 213-224, 2003. [CrossRef]
Hartlapp I, Abe R, Saeed RW, Peng T, Voelter W, Bucala R, Metz CN. Fibrocytes induce an angiogenic phenotype in cultured endothelial cells and promote angiogenesis in vivo. FASEB J. 15: 2215-2224, 2001. [CrossRef]
Hashimoto N, Jin H, Liu T, Chensue SW, Phan SH. Bone marrow-derived progenitor cells in pulmonary fibrosis. J Clin Invest. 113: 243-252, 2004. [CrossRef]
Kisseleva T, Brenner DA. Fibrogenesis of parenchymal organs. Proc Am Thorac Soc. 5: 338-342, 2008. [CrossRef]
Kisseleva T, Uchinami H, Feirt N, Quintana-Bustamante O, Segovia JC, Schwabe RF, Brenner DA. Bone marrow-derived fibrocytes participate in pathogenesis of liver fibrosis. J Hepatol. 45: 429-438, 2006. [CrossRef]
Mehrad B, Burdick MD, Zisman DA, Keane MP, Belperio JA, Strieter RM. Circulating peripheral blood fibrocytes in human fibrotic interstitial lung disease. Biochem Biophys Res Commun. 353: 104-108, 2007. [CrossRef]
Moore BB, Kolodsick JE, Thannickal VJ, Cooke K, Moore TA, Hogaboam C, Wilke CA, Toews GB. CCR2-mediated recruitment of fibrocytes to the alveolar space after fibrotic injury. Am J Pathol. 166: 675-684, 2005. [CrossRef]
Moore BB, Murray L, Das A, Wilke CA, Herrygers AB, Toews GB. The role of CCL12 in the recruitment of fibrocytes and lung fibrosis. Am J Respir Cell Mol Biol. 35: 175-181, 2006. [CrossRef]
Mori L, Bellini A, Stacey MA, Schmidt M, Mattoli S. Fibrocytes contribute to the myofibroblast population in wounded skin and originate from the bone marrow. Exp Cell Res. 304: 81-90, 2005. [CrossRef]
Phillips RJ, Burdick MD, Hong K, Lutz MA, Murray LA, Xue YY, Belperio JA, Keane MP, Strieter RM. Circulating fibrocytes traffic to the lungs in response to CXCL12 and mediate fibrosis. J Clin Invest. 114: 438-446, 2004. [CrossRef]
Quan TE, Cowper S, Wu SP, Bockenstedt LK, Bucala R. Circulating fibrocytes: collagen-secreting cells of the peripheral blood. Int J Biochem Cell Biol. 36: 598-606, 2004. [CrossRef]
Sakai N, Wada T, Yokoyama H, Lipp M, Ueha S, Matsushima K, Kaneko S. Secondary lymphoid tissue chemokine, SLC/CCL21/CCR7 signaling regulates fibrocytes in renal fibrosis. Proc Natl Acad Sci USA. 103: 14098-14103, 2006. [CrossRef]
Schmidt M, Sun G, Stacey MA, Mori L, Mattoli S. Identification of circulating fibrocytes as precursors of bronchial myofibroblasts in asthma. J Immunol. 171: 380-389, 2003.
Varcoe RL, Mikhail M, Guiffre AK, Pennings G, Vicaretti M, Hawthorne WJ, Fletcher JP, Medbury HJ. The role of the fibrocyte in intimal hyperplasia. J Thromb Haemost. 4: 1125-1133, 2006. [CrossRef]
Wang JF, Jiao H, Stewart TL, Shankowsky HA, Scott PG, Tredget EE. Fibrocytes from burn patients regulate the activities of fibroblasts. Wound Repair Regen. 15: 113-121, 2007. [CrossRef]
Yang L, Scott PG, Giuffre J, Shankowsky HA, Ghahary A, Tredget EE. Peripheral blood fibrocytes from burn patients: identification and quantification of fibrocytes in adherent cells cultured from peripheral blood mononuclear cells. Lab Invest. 82: 1183-1192, 2002.
Yang L, Scott PG, Dodd C, Medina A, Jiao H, Shankowsky HA, Ghahary A, Tredget EE. Identification of fibrocytes in postburn hypertrophic scar. Wound Repair Regen. 13: 398-404, 2005. [CrossRef]
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