Cloning, sequencing, chromosomal location, and function of cDNAs encoding an opioid growth factor receptor (OGFr) in humans

Brain Res. 2000 Feb 21;856(1-2):75-83. doi: 10.1016/s0006-8993(99)02330-6.


The native opioid growth factor (OGF), [Met(5)]-enkephalin, is a tonic inhibitory peptide that modulates cell proliferation and tissue organization during development, cancer, cellular renewal, wound healing, and angiogenesis. OGF action is mediated by a receptor mechanism. We have cloned and sequenced cDNAs encoding multiple spliced forms of a human OGF receptor. The open reading frame in the longest cDNA was found to encode a protein of 697 amino acids, and 8 imperfect repeats of 20 amino acids each were a prominent feature. Altogether, five alternatively spliced forms were observed. The cDNA hybridized to mRNA from a variety of normal and neoplastic cells and tissues. Functional studies using antisense oligonucleotides to OGFr demonstrated an enhancement in cell growth. Fluorescent in situ hybridization (FISH) experiments showed the chromosomal location to be 20q13.3. This OGF receptor has no homology to classical opioid receptors. These results provide molecular validity for the interaction of OGF and OGF receptor in the regulation of growth processes in humans.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Alternative Splicing
  • Amino Acid Sequence
  • Animals
  • Brain / metabolism*
  • Chromosome Mapping
  • Chromosomes, Human, Pair 20*
  • Cloning, Molecular
  • DNA, Complementary
  • Female
  • Fetus
  • Humans
  • Male
  • Molecular Sequence Data
  • Neuroblastoma
  • Oligodeoxyribonucleotides, Antisense / pharmacology
  • Open Reading Frames
  • Placenta / metabolism
  • Pregnancy
  • Protein Isoforms / chemistry
  • Protein Isoforms / genetics
  • Protein Isoforms / metabolism
  • Rats
  • Receptors, Opioid / chemistry
  • Receptors, Opioid / genetics*
  • Receptors, Opioid / metabolism*
  • Recombinant Proteins / biosynthesis
  • Recombinant Proteins / chemistry
  • Recombinant Proteins / metabolism
  • Repetitive Sequences, Amino Acid
  • Sequence Alignment
  • Tumor Cells, Cultured


  • DNA, Complementary
  • Oligodeoxyribonucleotides, Antisense
  • Protein Isoforms
  • Receptors, Opioid
  • Recombinant Proteins
  • zeta receptor

Associated data

  • GENBANK/AF172449
  • GENBANK/AF172450
  • GENBANK/AF172451
  • GENBANK/AF172452
  • GENBANK/AF172453