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Bone resorptive activity of osteoclast-like cells generated in vitro by PEG-induced macrophage fusion Biol. Res.
Murillo,Andrea; Guerrero,Carlos A; Acosta,Orlando; Cardozo,Carmen A.
Normal bone remodeling is maintained by a balance between osteoclast and osteoblast activity, whereas defects in osteoclast activity affecting such balance result in metabolic bone disease. Macrophage-macrophage fusion leading to multinucleated osteoclasts being formed is still not well understood. Here we present PEG-induced fusion of macrophages from both U937/A and J774 cell lines and the induced differentiation and activation of osteoclast-like cells according to the expression of osteoclast markers such as tartrate resistant acid phosphatase (TRAP) and bone resorptive activity. PEG-induced macrophage fusion, during the non-confuent stage, signifcantly increased the osteoclastogenic activity of macrophages from cell lines compared to that of...
Tipo: Journal article Palavras-chave: Bone resorption; Macrophage fusion; Osteoclast activity; Osteoclast differentiation; PEG; RANKL.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000200009
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BMP-2 and titanium particles synergistically activate osteoclast formation BJMBR
Sun,S.X.; Guo,H.H.; Zhang,J.; Yu,B.; Sun,K.N.; Jin,Q.H..
A previous study showed that BMP-2 (bone morphogenetic protein-2) and wear debris can separately support osteoclast formation induced by the receptor activator of NF-κB ligand (RANKL). However, the effect of BMP-2 on wear debris-induced osteoclast formation is unclear. In this study, we show that neither titanium particles nor BMP-2 can induce osteoclast formation in RAW 264.7 mouse leukemic monocyte macrophage cells but that BMP-2 synergizes with titanium particles to enhance osteoclast formation in the presence of RANKL, and that at a low concentration, BMP-2 has an optimal effect to stimulate the size and number of multinuclear osteoclasts, expression of osteoclast genes, and resorption area. Our data also clarify that the effects caused by the increase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone morphogenetic protein; Titanium; Osteoclasts; SMAD; RANKL.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000600461
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Up-regulated expression of CD147 gene in malignant bone tumor and the possible induction mechanism during osteoclast formation BJMBR
Qiao,Suchi; Liu,Chang; Xu,Weijie; AZhaTi,WuBuLi; Li,Cheng; Wang,Zhiwei.
It is increasingly evident that the microenvironment of bone can influence cancer phenotype in many ways that favor growth in bone. CD147, a transmembrane protein of the immunoglobulin (Ig) superfamily, was identified independently in different species and has many designations across different species. However, expression levels of CD147 mRNA in bone cancer have not been described. In this study, we have used real-time fluorescence quantification (RT-PCR) to demonstrate CD147 expression in malignant bone cancer and benign bone tumor tissues. The results suggested that the expression of CD147 gene was significantly up-regulated in malignant bone cancer. Moreover, we found that over-expressed RANKL progressively enhanced osteoclast formation up to 48 h,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone cancer; RT-PCR; Western blot; RANKL; Human.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000900608
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Rankl expression predicts poor prognosis in gastric cancer patients: results from a retrospective and single-center analysis BJMBR
Zhang,X.; Song,Y.; Song,N.; Zhang,L.; Wang,Y.; Li,D.; Wang,Z.; Qu,X.; Liu,Y..
The receptor activator of nuclear factor κB ligand (RANKL)/RANK pathway plays an important role in the prognosis of several solid tumor types, but its role in gastric cancer prognosis has been poorly characterized. A total of 116 gastric cancer patients who underwent surgical resection were enrolled in this study. Expressions of RANKL and RANK in gastric cancer tissues were detected using immunohistochemical staining. Thirty-eight patients (33%) showed a high level of RANKL expression and 61 patients (53%) showed a high level of RANK expression. There was a positive correlation between expressions of RANKL and RANK (P=0.014, r=0.221). A high level of RANKL expression indicated shorter overall survival (OS) (P=0.008), and was associated with a higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: RANKL; RANK; Gastric cancer; IHC; Overall survival.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000300602
Registros recuperados: 4
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