Induction of metallothionein gene expression by epidermal growth factor and its inhibition by transforming growth factor‐β and dexamethasone in rat hepatocytes
Pierre Moffatt, Gabriel L. Plaa, Francine Denizeau – 1 April 1995 – Metallothionein (MT) is a small cysteine‐rich protein thought to be mainly involved in metal regulation and detoxification. The implication of MT in cell growth and differentiation has also been suggested. This latter hypothesis was further investigated in adult rat hepatocytes induced to proliferate by epidermal growth factor (EGF). Exposure of hepatocytes to EGF resulted in significant increases (≈twofold) in MT protein and MT‐1 messenger RNA (mRNA) levels, which were maximal after 48 hours.