Gene expression profiling of osteoclast differentiation by combined suppression subtractive hybridization (SSH) and cDNA microarray analysis.
Bone homeostasis is maintained by the balanced action of bone-forming osteoblasts and bone-resorbing osteoclasts. Multinucleated, mature osteoclasts develop from hematopoietic stem cells via the monocyte-macrophage lineage, which also give rise to macrophages and dendritic cells. Despite their distinct physiologic roles in bone and the immune system, these cell types share many molecular and biochemical features. To provide insights into how osteoclasts differentiate and function to control bone metabolism, we employed a systematic approach to profile patterns of osteoclast-specific gene expression by combining suppression subtractive hybridization (SSH) and cDNA microarray analysis. Here we examined how gene expression profiles of mature osteoclast differ from macrophage or dendritic cells, how gene expression profiles change during osteoclast differentiation, and how Mitf, a transcription factor critical for osteoclast maturation, affects the gene expression profile. This approach revealed a set of genes coordinately regulated for osteoclast function, some of which have previously been implicated in several bone diseases in humans.
Rho
Jaerang
J
Abramson Family Center Research Institute, Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia 19104-6160, USA.
Altmann
Curtis R
CR
Socci
Nicholas D
ND
Merkov
Lubomir
L
Kim
Nacksung
N
So
Hongseob
H
Lee
Okbok
O
Takami
Masamichi
M
Brivanlou
Ali H
AH
Choi
Yongwon
Y
D000818:Animals; D002454:Cell Differentiation; D002460:Cell Line; D002467:Cell Nucleus / Q000648:ultrastructure; D002478:Cells, Cultured; D004268:DNA-Binding Proteins / Q000235:genetics / Q000502:physiology; D020869:Gene Expression Profiling / Q000379:methods*; D007700:Kinetics; D051379:Mice; D051739:Microphthalmia-Associated Transcription Factor; D009154:Mutation; D009693:Nucleic Acid Hybridization / Q000379:methods*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D010010:Osteoclasts / Q000166:cytology / Q000378:metabolism* / Q000648:ultrastructure; D012333:RNA, Messenger / Q000096:biosynthesis; D014157:Transcription Factors
D004268:DNA-Binding Proteins; D051739:Microphthalmia-Associated Transcription Factor; C497235:Mitf protein, mouse; D012333:RNA, Messenger; D014157:Transcription Factors