Biological activity of bovine placental lactogen in 3T3-F442A preadipocytes is mediated through a somatogenic receptor

Dorit Vashdi, Gerard Elberg, Edna Sakal, Arieh Gertler*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Bovine placental lactogen (bPL) exhibited antimitogenic differentiation-promoting, biological activity in 3T3-F442A preadipocytes, Competitive binding studies and affinity labelling revealed bPL activity to be mediated through a somatogenic type of receptor that recognizes human growth hormone (hGH) and bovine GH, but not ovine prolactin or human PL. The bioactivity of bPL was sixfold lower than that of hGH despite that bPL is binding to the somatogenic receptors with fivefold higher affinity. This discrepancy may result from the relatively low ability of bPL to induce post-receptoral effects such as receptor dimerization.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
JournalFEBS Letters
Volume305
Issue number2
DOIs
StatePublished - 29 Jun 1992

Keywords

  • 3T3-F442A preadipocyte
  • Affinity labelling
  • Placental lactogen
  • Somatogenic receptor

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