Heat shock induces interferon-TAU gene expression by in vitro-produced bovine blastocysts

CF Hickman, M Clinton, A Ainslie, CJ Ashworth, JA Rooke

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Problem The type I interferon (IFN), IFN-tau (τ), is the primary embryonic signal for pregnancy maintenance in ruminants. This study determined the effects of heat shock upon IFN-τ (IFNT) gene expression by bovine blastocysts in vitro. Method of study In vitro-produced blastocyst-stage embryos were exposed to 42°C for 4 hr, and mRNA for heat-shock protein 70 (HSP70) and IFNT quantified. Results Heat shock increased both HSP70 and IFNT expression. There was a significant correlation between HSP70 and IFNT transcript levels irrespective of whether a blastocyst had been exposed to heat shock or not. Conclusion The increase in IFNT as a result of heat shock suggests that a proportion of the variation in IFNT expression observed in blastocyst-stage embryos is a response to stress.
Original languageEnglish
Pages (from-to)177 - 181
Number of pages5
JournalAmerican Journal of Reproductive Immunology
Issue number3
Publication statusPrint publication - Sept 2013

Bibliographical note



  • Embryo
  • Heat shock protein 70
  • In-vitro production


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