The enzymes of glutathione synthesis: gamma-glutamylcysteine synthetase.

OW Griffith, RT Mulcahy - … in enzymology and related areas of …, 1999 - europepmc.org
The metabolite glutathione fulfills many important and chemically complex roles in protecting
cellular components from the deleterious effects of toxic species. GSH combines with …

Regulation of γ-glutamylcysteine synthetase subunit gene expression: Insights into transcriptional control of antioxidant defenses

AC Wild, RT Mulcahy - Free radical research, 2000 - Taylor & Francis
… 41"54'82l The failure to direct expression of reporter transgenes harboring up to 5.5kb of
the GCSh promoter (JJ Gipp, AC Wild and RT Mulcahy, unpublished observation) leads us to …

DT-diaphorase in activation and detoxification of quinones: Bioreductive activation of mitomycin C

…, D Siegel, H Beall, AS Prakash, RT Mulcahy… - Cancer and Metastasis …, 1993 - Springer
A role for DTD in the bioreductive activation of mitomycin C was supported by indirect
evidence utilizing enzyme inhibitors in cellular systems. Using a cell-free system, we have …

[HTML][HTML] Regulation of γ-glutamylcysteine synthetase subunit gene expression by the transcription factor Nrf2

AC Wild, HR Moinova, RT Mulcahy - Journal of Biological Chemistry, 1999 - ASBMB
Exposure of HepG2 cells to β-naphthoflavone (β-NF) or pyrrolidine dithiocarbamate (PDTC)
resulted in the up-regulation of the γ-glutamylcysteine synthetase catalytic (GCS h ) and …

[HTML][HTML] Constitutive and β-naphthoflavone-induced expression of the human γ-glutamylcysteine synthetase heavy subunit gene is regulated by a distal antioxidant …

RT Mulcahy, MA Wartman, HH Bailey… - Journal of Biological …, 1997 - ASBMB
Glutathione (GSH) is an abundant cellular non-protein sulfhydryl that functions as an
important protectant against reactive oxygen species and electrophiles, is involved in the …

[HTML][HTML] The Keap1 BTB/POZ dimerization function is required to sequester Nrf2 in cytoplasm

LM Zipper, RT Mulcahy - Journal of Biological Chemistry, 2002 - ASBMB
Transactivation of phase II detoxification enzymes and antioxidant proteins is mediated by the
Cap'N′Collar transcription factor, Nrf2, which is sequestered in the cytoplasm by the actin-…

Up-regulation of the human γ-glutamylcysteine synthetase regulatory subunit gene involves binding of Nrf-2 to an electrophile responsive element

HR Moinova, RT Mulcahy - Biochemical and biophysical research …, 1999 - Elsevier
The rate-limiting step in the de novo synthesis of the cellular protectant glutathione is
catalyzed by γ-glutamylcysteine synthetase (GCS; also known as glutamine-L-cysteine ligase, …

Erk activation is required for Nrf2 nuclear localization during pyrrolidine dithiocarbamate induction of glutamate cysteine ligase modulatory gene expression in HepG2 …

LM Zipper, RT Mulcahy - Toxicological Sciences, 2003 - academic.oup.com
Pyrrolidine dithiocarbamate (PDTC) induction of the human glutamate cysteine ligase
modulatory (GCLM) gene is dependent on activation of the mitogen-activated protein kinases (…

Inhibition of ERK and p38 MAP kinases inhibits binding of Nrf2 and induction of GCS genes

LM Zipper, RT Mulcahy - Biochemical and biophysical research …, 2000 - Elsevier
Genes encoding the catalytic (GCS h ) and regulatory (GCS l ) subunits of human γ-glutamylcysteine
synthetase (γGCS), which catalyzes the rate limiting step in glutathione synthesis, …

[PDF][PDF] Phase I clinical trial of intravenous L-buthionine sulfoximine and melphalan: an attempt at modulation of glutathione.

HH Bailey, RT Mulcahy, KD Tutsch… - Journal of clinical …, 1994 - researchgate.net
Purpose: A phase I dose-escalation trial of intrave-nous (IV) L-buthionine-SR-sulfoximine
(BSO) with melphalan (L-PAM) was performed to determine the toxicity and biologic activity …