Antisense DNA downregulates protein kinase C isozymes (beta and alpha) and insulin-stimulated 2-deoxyglucose uptake in rat adipocytes

Antisense Res Dev. 1991 Spring;1(1):35-42. doi: 10.1089/ard.1991.1.35.

Abstract

Rat adipocytes were treated with antisense dimethoxytrityl pentadecadeoxynucleotides, complementary to mRNA initiation codon regions for alpha and beta isozymes of protein kinase C (PKC). This antisense treatment provoked 50-70% decreases in PKC and insulin-stimulated 2-deoxyglucose uptake, but did not inhibit insulin-stimulated diacylglycerol synthesis. Sense or nonsense oligodeoxynucleotides were without effect on PKC and 2-deoxyglucose uptake. These results suggest that: (i) PKC-alpha and PKC-beta isozymes can be specifically downregulated in rat adipocytes by antisense oligodeoxynucleotides, and (ii) insulin-stimulated glucose transport requires PKC.

Publication types

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

MeSH terms

  • Adipose Tissue / cytology
  • Adipose Tissue / drug effects*
  • Adipose Tissue / metabolism
  • Animals
  • Base Sequence
  • Biological Transport / drug effects
  • Cells, Cultured
  • DNA, Antisense / genetics
  • DNA, Antisense / pharmacology*
  • Deoxyglucose / metabolism*
  • Down-Regulation / drug effects
  • Down-Regulation / genetics
  • Glucose / metabolism
  • Insulin Antagonists / pharmacology
  • Isoenzymes / metabolism*
  • Male
  • Molecular Sequence Data
  • Protein Kinase C / metabolism*
  • Rats
  • Rats, Inbred Strains

Substances

  • DNA, Antisense
  • Insulin Antagonists
  • Isoenzymes
  • Deoxyglucose
  • Protein Kinase C
  • Glucose