title: Serum proteome profiles identifies parathyroid hormone physiologic response.
abstract: Parathyroid hormone (amino acids 1-34) (PTH) regulates bone and calcium homeostasis. The magnitude of the effects of PTH on bone varies in osteoporosis patients. We employed ProteinChip technology to generate protein profiles from sera of mice treated once daily with PTH or vehicle for 3 or 11 days. Data analyses on selected arrays indicated significant increases in serum proteins or peptides in PTH-treated groups, compared to vehicle-controls. The magnitude of change increased with duration of treatment. Anion-exchange fractionation of sera prior to profiling on array surfaces increased the number of proteins detected that were regulated by PTH. The optimized purification conditions developed "on-chip" for subsets of proteins, reflected corresponding behavior with process-compatible chromatographic resins under elution chromatography. We have identified and evaluated subsets of serum proteins regulated by PTH treatment, using a combination of ProteinChip technology, column chromatography, PAGE and LC-MS/MS. Our data demonstrate the feasibility of using a panel of serum proteins to detect PTH responsiveness in humans.
authors.affiliation: Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, 46202, USA.
authors.forename: Agasanur K
authors.initials: AK
authors.lastname: Prahalad
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Hickey
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Huang
authors.forename: Derek J
authors.initials: DJ
authors.lastname: Hoelz
authors.forename: Lacey
authors.initials: L
authors.lastname: Dobrolecki
authors.forename: Sreemala
authors.initials: S
authors.lastname: Murthy
authors.forename: Therry
authors.initials: T
authors.lastname: Winata
authors.forename: Janet M
authors.initials: JM
authors.lastname: Hock
mesh_terms: D000818:Animals; D001798:Blood Proteins / Q000032:analysis* / Q000502:physiology*; D004334:Drug Administration Schedule; D005240:Feasibility Studies; D006801:Humans; D007279:Injections, Subcutaneous; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D010281:Parathyroid Hormone / Q000008:administration & dosage / Q000235:genetics / Q000494:pharmacology*; D010446:Peptide Fragments / Q000008:administration & dosage / Q000235:genetics / Q000494:pharmacology*; D040081:Protein Array Analysis; D020543:Proteome / Q000032:analysis* / Q000502:physiology*; D040901:Proteomics / Q000379:methods; D011897:Random Allocation; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000494:pharmacology; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D001798:Blood Proteins; D010281:Parathyroid Hormone; D010446:Peptide Fragments; D020543:Proteome; D011994:Recombinant Proteins