title: Adrm1 interacts with Atp6v0d2 and regulates osteoclast differentiation.
abstract: Bone homeostasis is tightly regulated by matrix-producing osteoblasts and bone-resorbing osteoclasts. During osteoclast development, mononuclear preosteoclasts derived from myeloid cells fuse together to form multinucleated, giant cells. Previously, we reported that the d2 isoform of the vacuolar (H(+)) ATPase V0 domain (Atp6v0d2) plays an important role in osteoclast maturation and bone formation. To understand how Atp6v0d2 controls osteoclast maturation, we have performed a yeast two-hybrid screen using full-length Atp6v0d2 as the bait, and identified adhesion-regulating molecule 1 protein (Adrm1) as a potential functional partner of Atp6v0d2. The interaction between Atp6v0d2 and Adrm1 was confirmed in yeast and invivo using immunoprecipitation assays. We also show that Adrm1 is required for cell migration and osteoclast maturation.
authors.affiliation: Departments of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
authors.forename: Taesoo
authors.initials: T
authors.lastname: Kim
authors.forename: Hyun-Il
authors.initials: HI
authors.lastname: Ha
authors.forename: Nacksung
authors.initials: N
authors.lastname: Kim
authors.forename: Okju
authors.initials: O
authors.lastname: Yi
authors.forename: Seoung Hoon
authors.initials: SH
authors.lastname: Lee
authors.forename: Yongwon
authors.initials: Y
authors.lastname: Choi
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002465:Cell Movement; D002478:Cells, Cultured; D006801:Humans; D047468:Immunoprecipitation; D047908:Intracellular Signaling Peptides and Proteins; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D010010:Osteoclasts / Q000166:cytology / Q000378:metabolism / Q000502:physiology*; D020798:Two-Hybrid System Techniques; D025262:Vacuolar Proton-Translocating ATPases / Q000235:genetics / Q000378:metabolism*
chemical_list: C500781:ADRM1 protein, human; D047908:Intracellular Signaling Peptides and Proteins; D008562:Membrane Glycoproteins; C545897:ATP6V0D2 protein, human; D025262:Vacuolar Proton-Translocating ATPases