Linked Life Data

14500379

Source:http://linkedlifedata.com/resource/pubmed/id/14500379

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
17
pubmed:dateCreated
2003-9-22
pubmed:abstractText
Multiple myeloma (MM) is an incurable B-cell malignancy able to mediate massive destruction of the axial skeleton. The aim of this study was to examine the involvement of the tumor necrosis factor-ligand family member, receptor activator of nuclear factor-kappaB ligand (RANKL), and its naturally occurring antagonist, osteoprotegerin (OPG), in MM biology. Using flow cytometry and two independent anti-RANKL antibodies, we demonstrate RANKL expression in CD38(+++)CD45(+) and CD38(+++)CD45(-) myeloma plasma cell (MPC) subpopulations derived from patients with osteolytic MM. In addition, highly purified subpopulations of MPC express mRNA for both transmembrane and soluble RANKL isoforms but lack expression of OPG mRNA and protein. We also show that RANKL expressed by MPC is functional as in vitro coculture of CD38(+++)CD45(+) and CD38(+++)CD45(-) MPC subpopulations with peripheral blood mononuclear cells resulted in the formation of multinucleate, tartrate-resistant acid phosphatase-positive osteoclasts-like cells capable of forming typical resorption pits. Furthermore, high expression of membrane-associated RANKL by CD38(+++) MPC correlated with the presence of multiple radiological bone lesions in individuals with MM. Together, our data strongly suggest that RANKL expression by MPC confers on them the ability to participate directly in the formation of osteoclast in vivo and extends our knowledge of the involvement of RANKL and OPG in the osteolysis characteristic of this disease.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
63
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5438-45
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Receptor activator of nuclear factor-kappaB ligand expression by human myeloma cells mediates osteoclast formation in vitro and correlates with bone destruction in vivo.
pubmed:affiliation
Myeloma and Mesenchymal Research Group, Matthew Roberts Foundation Laboratory, Division of Haematology, Institute of Medical and Veterinary Science, Adelaide, South Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't