Expression of bone morphogenetic proteins in human osteosarcoma. Immunohistochemical detection with monoclonal antibody. Academic Article uri icon

Overview

abstract

  • BACKGROUND: Bone morphogenetic proteins (BMP) induce ectopic bone formation in vivo and may play a role in normal bone development. In addition, bone morphogenetic activity, as measured in a bone-forming assay in immunodeficient, athymic nu/nu mice, is present in a proportion of osteosarcomas; this activity, which may be mediated by BMP, is correlated with a poor prognosis. METHODS: The development of a monoclonal antibody against recombinant human BMP-2, AbH3b2/17, has allowed immunohistochemical localization of BMP in tumor tissues. Cryostat sections of osteosarcomas (21 tumor samples), chondrosarcomas (5 samples), and Ewing's sarcomas of bone (5 samples) were examined with AbH3b2/17 using the avidin-biotin-immunoperoxidase method. RESULTS: The authors found AbH3b2/17 immunoreactivity in 12 of the 21 osteosarcoma samples (57% sensitivity) obtained from 20 patients. For one patient, samples of the primary lesion and a subsequent metastasis were tested, and only the latter showed AbH3b2/17 immunoreactivity. The chondrosarcomas and Ewing's sarcomas examined showed no immunoreactivity. In antigen-positive osteosarcomas, AbH3b2/17 immunostaining was localized predominantly in the cytoplasm of tumor cells. Moreover, the proportion of AbH3b2/17-reactive cells varied among osteosarcomas with disparate histologic features. CONCLUSIONS: The authors identified a rapid and widely applicable method for detecting BMP expression in intact tissues, which may complement and enhance the bone-forming assay in nu/nu mice as a prognostic procedure in osteosarcomas.

publication date

  • January 1, 1994

Research

keywords

  • Bone Neoplasms
  • Growth Substances
  • Neoplasm Proteins
  • Osteosarcoma
  • Proteins

Identity

Scopus Document Identifier

  • 0028044723

Digital Object Identifier (DOI)

  • 10.1002/1097-0142(19940101)73:1<85::aid-cncr2820730116>3.0.co;2-8

PubMed ID

  • 7506120

Additional Document Info

volume

  • 73

issue

  • 1