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The Influence of Melatonin on the Daily 24-h Rhythm of Putative Reference Gene Expression in White Adipose Tissues. | LitMetric

AI Article Synopsis

  • In adipose tissue, many genes show daily expression patterns influenced by melatonin, which can vary across different types of fat storage in the body.
  • A study using control and pinealectomized rats revealed that some genes oscillated daily in all fat types, while others showed varied expression patterns depending on the fat location.
  • The absence of melatonin disrupted the normal rhythms of specific genes, suggesting that it's crucial to standardize reference genes carefully in experiments using RT-qPCR to account for these daily variations.

Article Abstract

In adipose tissue, the expression of hundreds of genes exhibits circadian oscillation, which may or may not be affected by circulating melatonin levels. Using control and pinealectomized rats, we investigated the daily expression profile of , , , and , genes that are commonly used as reference genes for reverse transcription quantitative polymerase chain reaction (RT-qPCR), in epididymal (EP), retroperitoneal (RP), and subcutaneous (SC) adipose tissues. In control rats, expression presented a daily oscillation in all adipose tissues investigated, showed 24-h fluctuations in only RP and SC depots, was stable over 24 h for EP and RP but oscillated over 24 h in SC adipose tissue, and presented a daily oscillation in only RP fat. In the absence of melatonin, the rhythmicity of in all adipose depots was abolished, the daily rhythmicity of and was disrupted in SC fat, the peak expression of and was delayed, and the amplitude of was reduced in RP adipose tissue. Collectively, our results demonstrate that the expression of putative reference genes displays a daily rhythm influenced by melatonin levels in a manner specific to the adipose depot. Thus, the proper standardization and daily profile expression of reference genes should be performed carefully in temporal studies using RT-qPCR analysis.

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Source
http://dx.doi.org/10.1177/0748730420949337DOI Listing

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