Evidence against either a premature stop codon or the absence of obese gene mRNA in human obesity

Robert Considine, E. L. Considine, C. J. Williams, M. R. Nyce, S. A. Magosin, T. L. Bauer, E. L. Rosato, J. Colberg, J. F. Caro

Research output: Contribution to journalArticle

415 Citations (Scopus)

Abstract

Obese (ob) gene expression in abdominal subcutaneous adipocytes from lean and obese humans was examined. The full coding region of the ob gene was isolated from a human adipocyte cDNA library. Translation of the insert confirmed the reported amino acid sequence. There was no difference in the sequence of an reverse transcription PCR product of the coding region from five lean and five obese subjects. The nonsense mutation in the ob mouse which results in the conversion of arginine 105 to a stop codon was not present in human obesity. In all 10 human cDNAs, arginine 105 was encoded by CGG, consequently two nucleotide substitutions would be required to result in a stop codon. To compare the amount of ob gene expression in lean and obese individuals, radiolabed primer was used in the PCR reaction with β-actin as a control. There was 72% more ob gene expression (P <0.01) in eight obese subjects (body mass index, BMI = 42.8±2.7) compared to eight lean controls (BMI = 22.4±0.8). Regression analysis indicated a positive correlation between BMI and the amount of ob message (P <0.005). There was no difference in the amount of β-actin expression in the two groups. These results provide evidence that ob gene expression is increased in human obesity; furthermore, the mutations present in the mouse ob gene were not detected in the human mRNA population.

Original languageEnglish (US)
Pages (from-to)2986-2988
Number of pages3
JournalJournal of Clinical Investigation
Volume95
Issue number6
StatePublished - 1995
Externally publishedYes

Fingerprint

Nonsense Codon
Obesity
Messenger RNA
Genes
Gene Expression
Obese Mice
Terminator Codon
Adipocytes
Arginine
Actins
Polymerase Chain Reaction
Gene Library
Reverse Transcription
Amino Acid Sequence
Body Mass Index
Nucleotides
Complementary DNA
Regression Analysis
Mutation
Population

Keywords

  • human adipocyte
  • obese gene
  • reverse transcription PCR

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Considine, R., Considine, E. L., Williams, C. J., Nyce, M. R., Magosin, S. A., Bauer, T. L., ... Caro, J. F. (1995). Evidence against either a premature stop codon or the absence of obese gene mRNA in human obesity. Journal of Clinical Investigation, 95(6), 2986-2988.

Evidence against either a premature stop codon or the absence of obese gene mRNA in human obesity. / Considine, Robert; Considine, E. L.; Williams, C. J.; Nyce, M. R.; Magosin, S. A.; Bauer, T. L.; Rosato, E. L.; Colberg, J.; Caro, J. F.

In: Journal of Clinical Investigation, Vol. 95, No. 6, 1995, p. 2986-2988.

Research output: Contribution to journalArticle

Considine, R, Considine, EL, Williams, CJ, Nyce, MR, Magosin, SA, Bauer, TL, Rosato, EL, Colberg, J & Caro, JF 1995, 'Evidence against either a premature stop codon or the absence of obese gene mRNA in human obesity', Journal of Clinical Investigation, vol. 95, no. 6, pp. 2986-2988.
Considine, Robert ; Considine, E. L. ; Williams, C. J. ; Nyce, M. R. ; Magosin, S. A. ; Bauer, T. L. ; Rosato, E. L. ; Colberg, J. ; Caro, J. F. / Evidence against either a premature stop codon or the absence of obese gene mRNA in human obesity. In: Journal of Clinical Investigation. 1995 ; Vol. 95, No. 6. pp. 2986-2988.
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