The nuclear factor interleukin-6 (NF-IL6) and signal transducer and activator of transcription-3 (STAT-3) signalling pathways co-operate to mediate the activation of the hsp90β gene by interleukin-6 but have opposite effects on its inducibility by heat shock

*Department of Molecular Pathology, University College London Medical School, The Windeyer Building, 46 Cleveland Street, London W1P 6DB, U.K., †Department of Medicine, University College London Medical School, The Windeyer Building, 46 Cleveland Street, London W1P 6DB, U.K., ‡Medical School, Department of Biochemistry, Hyogo College of Medicine, 11 Mukogawa-Cho, Nishinomiya, Hyogo 663, Japan, and §Institute for Molecular and Cellular Biology, Osaka University, 1–3 Yamada-oka, Suita, Osaka 565, Japan