Growth hormone induces a DNA binding factor related to the interferon-stimulated 91-kDa transcription factor.

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Growth hormone induces a DNA binding factor related to the interferon-stimulated 91-kDa transcription factor.

Signaling mechanisms leading to regulation of gene transcription by growth hormone (GH) and other molecules that signal via the cytokine receptor family have been elusive. Based upon recent findings that GH and interferons activate JAK family tyrosine kinases, we have identified a novel signaling pathway leading from the GH receptor to the nucleus. We report that in 3T3-F442A fibroblasts, GH st...

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Epidermal growth factor-stimulated parathyroid hormone-related protein expression involves increased gene transcription and mRNA stability.

Epidermal growth factor (EGF) produced rapid and striking effects on parathyroid hormone-related protein (PTHrP) gene expression in the immortalized human keratinocyte cell line, HaCaT. Steady-state levels of PTHrP mRNA and secreted PTHrP were increased 10-fold by maximally effective concentrations of EGF. EGF increased both PTHrP gene transcription and PTHrP mRNA stability. Nuclear run-on assa...

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Vesicular stomatitis virus infection induces a nuclear DNA-binding factor specific for the interferon-stimulated response element.

Vesicular stomatitis virus (VSV) has a broad host range. It replicates in the cytoplasm and causes rapid cytopathic effects. We show that following VSV infection, a nuclear factor that binds to a select set of interferon-stimulated responsive elements (ISRE) is induced in many cell types. This factor, tentatively called VSV-induced binding protein (VIBP), was estimated to have an approximate mo...

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Primary Leukemia Cells Resistant to a-Interferon In Vitro Are Defective in the Activation of the DNA-Binding Factor Interferon-Stimulated Gene Factor

Cells from one-third of chronic lymphocytic leukemia (CLL) patients are resistant to a-interferon (a-IFN) as measured by induction of blast transformation. We have previously shown that all CLL clones express a/a-IFN receptors, but that the resistant cells are defective in the induction of the enzyme 2',5'-oligoadenylate synthetase (2',5-A synthetase). Thus, the deficiency in IFN sensitivity is...

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Transcription factor TFIID induces DNA bending upon binding to the TATA element.

The TATA box-binding factor TFIID plays a primary role in the process of transcription initiation by RNA polymerase II and its regulation by various gene-specific factors. Here we employ a permuted binding site/gel retardation assay with recombinant yeast and human TFIID to show that this factor induces DNA bending around the TATA element. These results are consistent with the presence of G + C...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 1994

ISSN: 0021-9258

DOI: 10.1016/s0021-9258(17)37599-3