Oncostatin M stimulates proliferation, induces collagen production and inhibits apoptosis of human lung fibroblasts
作者:Amelia K Scaffidi、Steven E Mutsaers、Yuben P Moodley、Robin J McAnulty、Geoffrey J Laurent、Philip J Thompson、Darryl A Knight
DOI:10.1038/sj.bjp.0704769
日期:2002.7
Oncostatin M (OSM), a member of the interleukin‐6 (IL‐6) cytokine family, acts on a variety of cells and elicits diversified biological responses, suggesting potential roles in the regulation of cell survival, differentiation and proliferation.We have examined the effect of OSM on the regulation of human lung fibroblast proliferation, collagen production and spontaneous apoptosis. The proliferative effects of OSM (0.5 – 100 ng ml−1) were assessed using a MTS assay as well as [3H]‐thymidine incorporation and cell counts at 24 and 48 h. Hydroxyproline was measured as an index of procollagen production by high pressure liquid chromotography (HPLC). Apoptosis was determined by annexin staining.OSM enhanced the mitotic activity of lung fibroblasts in a time and dose dependent manner. Maximum proliferation of 57% above control was observed after incubation for 48 h with 2 ng ml−1 OSM (P<0.05).Incubation with the mitogen activated protein kinase (MAPK) kinase inhibitor, PD98059 or the tyrosine kinase inhibitor, genestein both significantly reduced the mitogenic effect of OSM (P<0.05).In contrast, proliferation in response to OSM was not regulated by induction of cyclo‐oxygenase and subsequent prostaglandin E2 (PGE2) release or by IL‐6.OSM also stimulated fibroblasts to synthesize pro‐collagen by a maximum of 35% above control levels after 48 h (P<0.05).OSM significantly inhibited the spontaneous apoptosis of fibroblasts at 24 and 48 h.These results provide evidence that OSM has pro‐fibrotic properties and suggest that it may play a role in normal lung wound repair and fibrosis.British Journal of Pharmacology (2002) 136, 793–801; doi:10.1038/sj.bjp.0704769
Neumann, W. P.; Lind, H., Chemische Berichte, 1968, vol. 101, p. 2837 - 2844
作者:Neumann, W. P.、Lind, H.
DOI:——
日期:——
Hantzsch; Kaufmann, Justus Liebigs Annalen der Chemie, 1896, vol. 292, p. 330
作者:Hantzsch、Kaufmann
DOI:——
日期:——
Aminopyridine-Borane Complexes as Hydrogen Atom Donor Reagents: Reaction Mechanism and Substrate Selectivity
作者:Florian Barth、Florian Achrainer、Alexander M. Pütz、Hendrik Zipse
DOI:10.1002/chem.201702469
日期:2017.9.27
Alternative for tinhydrides: The crucial choice of initiators and reaction conditions for Lewis base borane mediated radical chain reduction reactions has been investigated in detail. An inverted selectivity was found for the reduction of iodides versus xanthates as compared to tinhydride reagents.