| Structural highlights
Disease
[CSF1_HUMAN] Note=Aberrant expression of CSF1 or CSF1R can promote cancer cell proliferation, invasion and formation of metastases. Overexpression of CSF1 or CSF1R is observed in a significant percentage of breast, ovarian, prostate, and endometrial cancers.[1] [2] Note=Aberrant expression of CSF1 or CSF1R may play a role in inflammatory diseases, such as rheumatoid arthritis, glomerulonephritis, atherosclerosis, and allograft rejection.[3] [4]
Function
[CSF1_HUMAN] Cytokine that plays an essential role in the regulation of survival, proliferation and differentiation of hematopoietic precursor cells, especially mononuclear phagocytes, such as macrophages and monocytes. Promotes the release of proinflammatory chemokines, and thereby plays an important role in innate immunity and in inflammatory processes. Plays an important role in the regulation of osteoclast proliferation and differentiation, the regulation of bone resorption, and is required for normal bone development. Required for normal male and female fertility. Promotes reorganization of the actin cytoskeleton, regulates formation of membrane ruffles, cell adhesion and cell migration. Plays a role in lipoprotein clearance.[5] [6] [7] [8]
Publication Abstract from PubMed
Enhanced activation of the signaling pathways that mediate the differentiation of mononuclear monocytes into osteoclasts is an underlying cause of several bone diseases and bone metastasis. In particular, dysregulation and overexpression of macrophage colony-stimulating factor (M-CSF) and its c-FMS tyrosine kinase receptor, proteins that are essential for osteoclast differentiation, are known to promote bone metastasis and osteoporosis, making both the ligand and its receptor attractive targets for therapeutic intervention. With this aim in mind, our starting point was the previously held concept that the potential of the M-CSFC31S mutant as a therapeutic is derived from its inability to dimerize and hence to act as an agonist. The current study showed, however, that dimerization is not abolished in M-CSFC31S and that the protein retains agonistic activity toward osteoclasts. To design an M-CSF mutant with diminished dimerization capabilities, we solved the crystal structure of the M-CSFC31S dimer complex and used structure-based energy calculations to identify the residues responsible for its dimeric form. We then used that analysis to develop M-CSFC31S,M27R, a ligand-based, high-affinity antagonist for c-FMS that retained its binding ability but prevented the ligand dimerization that leads to receptor dimerization and activation. The monomeric properties of M-CSFC31S,M27R were validated using dynamic light scattering and small-angle X-ray scattering analyses. It was shown that this mutant is a functional inhibitor of M-CSF-dependent c-FMS activation and osteoclast differentiation in vitro Our study, therefore, provided insights into the sequence-structure-function relationships of the M-CSF/c-FMS interaction and of ligand/receptor tyrosine kinase interactions in general.
Engineering a monomeric variant of macrophage colony-stimulating factor (M-CSF) that antagonizes the c-FMS receptor.,Zur Y, Rosenfeld L, Bakhman A, Ilic S, Hayun H, Shahar A, Akabayov B, Kosloff M, Levaot N, Papo N Biochem J. 2017 Jul 20;474(15):2601-2617. doi: 10.1042/BCJ20170276. PMID:28655719[9]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chitu V, Stanley ER. Colony-stimulating factor-1 in immunity and inflammation. Curr Opin Immunol. 2006 Feb;18(1):39-48. Epub 2005 Dec 6. PMID:16337366 doi:10.1016/j.coi.2005.11.006
- ↑ Patsialou A, Wyckoff J, Wang Y, Goswami S, Stanley ER, Condeelis JS. Invasion of human breast cancer cells in vivo requires both paracrine and autocrine loops involving the colony-stimulating factor-1 receptor. Cancer Res. 2009 Dec 15;69(24):9498-506. doi: 10.1158/0008-5472.CAN-09-1868. Epub, . PMID:19934330 doi:10.1158/0008-5472.CAN-09-1868
- ↑ Chitu V, Stanley ER. Colony-stimulating factor-1 in immunity and inflammation. Curr Opin Immunol. 2006 Feb;18(1):39-48. Epub 2005 Dec 6. PMID:16337366 doi:10.1016/j.coi.2005.11.006
- ↑ Patsialou A, Wyckoff J, Wang Y, Goswami S, Stanley ER, Condeelis JS. Invasion of human breast cancer cells in vivo requires both paracrine and autocrine loops involving the colony-stimulating factor-1 receptor. Cancer Res. 2009 Dec 15;69(24):9498-506. doi: 10.1158/0008-5472.CAN-09-1868. Epub, . PMID:19934330 doi:10.1158/0008-5472.CAN-09-1868
- ↑ Chitu V, Stanley ER. Colony-stimulating factor-1 in immunity and inflammation. Curr Opin Immunol. 2006 Feb;18(1):39-48. Epub 2005 Dec 6. PMID:16337366 doi:10.1016/j.coi.2005.11.006
- ↑ Patsialou A, Wyckoff J, Wang Y, Goswami S, Stanley ER, Condeelis JS. Invasion of human breast cancer cells in vivo requires both paracrine and autocrine loops involving the colony-stimulating factor-1 receptor. Cancer Res. 2009 Dec 15;69(24):9498-506. doi: 10.1158/0008-5472.CAN-09-1868. Epub, . PMID:19934330 doi:10.1158/0008-5472.CAN-09-1868
- ↑ Eda H, Zhang J, Keith RH, Michener M, Beidler DR, Monahan JB. Macrophage-colony stimulating factor and interleukin-34 induce chemokines in human whole blood. Cytokine. 2010 Dec;52(3):215-20. doi: 10.1016/j.cyto.2010.08.005. Epub 2010 Sep, 9. PMID:20829061 doi:10.1016/j.cyto.2010.08.005
- ↑ Wei S, Nandi S, Chitu V, Yeung YG, Yu W, Huang M, Williams LT, Lin H, Stanley ER. Functional overlap but differential expression of CSF-1 and IL-34 in their CSF-1 receptor-mediated regulation of myeloid cells. J Leukoc Biol. 2010 Sep;88(3):495-505. doi: 10.1189/jlb.1209822. Epub 2010 May, 26. PMID:20504948 doi:10.1189/jlb.1209822
- ↑ Zur Y, Rosenfeld L, Bakhman A, Ilic S, Hayun H, Shahar A, Akabayov B, Kosloff M, Levaot N, Papo N. Engineering a monomeric variant of macrophage colony-stimulating factor (M-CSF) that antagonizes the c-FMS receptor. Biochem J. 2017 Jul 20;474(15):2601-2617. doi: 10.1042/BCJ20170276. PMID:28655719 doi:http://dx.doi.org/10.1042/BCJ20170276
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