Domain-specific monoclonal antibodies produced against human PGRN

Hybridoma (Larchmt). 2011 Jun;30(3):271-8. doi: 10.1089/hyb.2010.0112.

Abstract

Progranulin (PGRN) encodes a 68.5-kDa secreted growth factor that is composed of seven and a half tandem repeats of a 12-cysteine granulin motif. PGRN is expressed in many tissues and has a role in mediating development, wound repair, inflammation, and tumorigenesis. Mutations leading to a loss of function in PGRN are the most common cause of familial frontotemporal lobar degeneration with TDP-43-positive inclusions (FTLD-TDP). In this study, we established hybridoma cell lines producing antibodies against human PGRN. Murine monoclonal antibodies (MAbs) against human PGRN were generated by using purified eukaryotic recombinant PGRN-6His fusion protein as immunogen. A panel of seven monoclonal antibodies was obtained after the preliminary screening by indirect enzyme-linked immunosorbent assay (ELISA), the data of which was confirmed by Western blot analysis and immunocytochemistry. By using constructs expressing a series of C- and N-terminal truncations, and single domains of PGRN, the particular domains recognized by MAbs were also identified. Domain-specific anti-PGRN MAbs will be an essential tool for investigating the role of PGRN in normal physiological or pathological conditions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Monoclonal / biosynthesis*
  • Antibodies, Monoclonal / genetics
  • Antibody Specificity
  • Blotting, Western
  • Cell Line, Tumor
  • DNA Primers / genetics
  • Enzyme-Linked Immunosorbent Assay
  • Humans
  • Hybridomas / immunology*
  • Immunohistochemistry
  • Intercellular Signaling Peptides and Proteins / genetics
  • Intercellular Signaling Peptides and Proteins / immunology*
  • Plasmids / genetics
  • Progranulins
  • Recombinant Fusion Proteins / immunology

Substances

  • Antibodies, Monoclonal
  • DNA Primers
  • GRN protein, human
  • Intercellular Signaling Peptides and Proteins
  • Progranulins
  • Recombinant Fusion Proteins