Induction of the c-fos oncogene by thyrotropic hormone in rat thyroid cells in culture

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Science  25 Jul 1986:
Vol. 233, Issue 4762, pp. 458-460
DOI: 10.1126/science.3726540


Rat thyroid cells in culture, rendered quiescent by hormone deprivation, can be stimulated to undergo DNA synthesis in the absence of serum by the addition of purified thyrotropin. The primary effect in response to thyrotropin action in thyroid cells is the induction of the c-fos oncogene, followed by c-myc expression. This suggests that thyrotropin acts as a competence growth factor.