Macrophage-inflammatory protein-1alpha regulates preosteoclast differentiation in vitro

B A Scheven; J S Milne; I Hunter; S P Robins

doi:10.1006/bbrc.1998.9909

Macrophage-inflammatory protein-1alpha regulates preosteoclast differentiation in vitro

B A Scheven, J S Milne, I Hunter, S P Robins

Dentistry

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Abstract

A validated in vitro system was used to investigate the nature of osteoclast-inducing growth factors (OGF) present in fetal rat calvarial conditioned medium (RCCM). Evidence is presented here that macrophage inflammatory protein-1alpha (MIP-1alpha), a member of the C-C chemokine family, is an essential factor for the induction of osteoclast differentiation in this system. Specific polyclonal antibodies against MIP-1alpha significantly inhibited development of TRAP-positive osteoclast precursors and multinucleated osteoclasts induced by RCCM. Anti-MIP-1alpha antibody treatment was accompanied by an increase in the number of macrophage-like cells, suggesting that bone-derived MIP-1alpha is involved in the direction of preosteoclast formation with an inhibitory action on progenitor cell proliferation. Reverse-phase HPLC of RCCM resolved multiple fractions with OGF activity. OGF fractions separated at low acetonitrile (AcN) concentrations (

Original language	English
Pages (from-to)	773-8
Number of pages	6
Journal	Biochemical and Biophysical Research Communications
Volume	254
Issue number	3
DOIs	https://doi.org/10.1006/bbrc.1998.9909
Publication status	Published - 1999

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title = "Macrophage-inflammatory protein-1alpha regulates preosteoclast differentiation in vitro",

abstract = "A validated in vitro system was used to investigate the nature of osteoclast-inducing growth factors (OGF) present in fetal rat calvarial conditioned medium (RCCM). Evidence is presented here that macrophage inflammatory protein-1alpha (MIP-1alpha), a member of the C-C chemokine family, is an essential factor for the induction of osteoclast differentiation in this system. Specific polyclonal antibodies against MIP-1alpha significantly inhibited development of TRAP-positive osteoclast precursors and multinucleated osteoclasts induced by RCCM. Anti-MIP-1alpha antibody treatment was accompanied by an increase in the number of macrophage-like cells, suggesting that bone-derived MIP-1alpha is involved in the direction of preosteoclast formation with an inhibitory action on progenitor cell proliferation. Reverse-phase HPLC of RCCM resolved multiple fractions with OGF activity. OGF fractions separated at low acetonitrile (AcN) concentrations (",

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AU - Milne, J S

AU - Hunter, I

AU - Robins, S P

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AB - A validated in vitro system was used to investigate the nature of osteoclast-inducing growth factors (OGF) present in fetal rat calvarial conditioned medium (RCCM). Evidence is presented here that macrophage inflammatory protein-1alpha (MIP-1alpha), a member of the C-C chemokine family, is an essential factor for the induction of osteoclast differentiation in this system. Specific polyclonal antibodies against MIP-1alpha significantly inhibited development of TRAP-positive osteoclast precursors and multinucleated osteoclasts induced by RCCM. Anti-MIP-1alpha antibody treatment was accompanied by an increase in the number of macrophage-like cells, suggesting that bone-derived MIP-1alpha is involved in the direction of preosteoclast formation with an inhibitory action on progenitor cell proliferation. Reverse-phase HPLC of RCCM resolved multiple fractions with OGF activity. OGF fractions separated at low acetonitrile (AcN) concentrations (

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JF - Biochemical and Biophysical Research Communications

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Macrophage-inflammatory protein-1alpha regulates preosteoclast differentiation in vitro

Abstract

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