Potential role of the 3-mercaptopyruvate sulfurtransferase (3-MST)—hydrogen sulfide (H2S) pathway in cancer cells

Publication date: Available online 27 November 2018Source: Pharmacological ResearchAuthor(s): Fiona Augsburger, Csaba SzaboAbstractHydrogen sulfide (H2S), produced by various endogenous enzyme systems, serves various biological regulatory roles in mammalian cells in health and disease. Over recent years, a new concept emerged in the field of H2S biology, showing that various cancer cells upregulate their endogenous H2S production, and utilize this mediator in autocrine and paracrine manner to stimulate proliferation, bioenergetics and tumor angiogenesis. Initial work identified cystathionine-beta-synthase (CBS) in many tumor cells as the key source of H2S. In other cells, cystathionine-gamma-lyase (CSE) has been shown to play a pathogenetic role. However, until recently, less attention has been paid to the third enzymatic source of H2S, 3-mercaptopyruvate sulfurtransferase (3-MST), even though several of its biological and biochemical features - e.g. its partial mitochondrial localization, its ability to produce polysulfides, which, in turn, can induce functionally relevant posttranslational protein modifications - makes it a potential candidate. Indeed, several lines of recent data indicate the potential role of the 3-MST system in cancer biology. In many cancers (e.g. colon adenocarcinoma, lung adenocarcinoma, urothelial cell carcinoma, various forms of oral carcinomas), 3-MST is upregulated compared to the surrounding normal tissue. According to in vitro studies, 3-MST upr...
Source: Pharmacological Research - Category: Drugs & Pharmacology Source Type: research

Related Links:

Publication date: Available online 24 August 2019Source: Seminars in Cancer BiologyAuthor(s): Sébastien Marx, Thomas Dal Maso, Jia-Wei Chen, Marina Bury, Johan Wouters, Carine Michiels, Benjamin Le CalvéAbstractThe majority of cancer-associated deaths are related to secondary tumor formation. This multistep process involves the migration of cancer cells to anatomically distant organs. Metastasis formation relies on cancer cell dissemination and survival in the circulatory system, as well as adaptation to the new tissue notably through genetic and/or epigenetic alterations. A large number of proteins are clear...
Source: Seminars in Cancer Biology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 24 August 2019Source: Seminars in Cancer BiologyAuthor(s): Ahmad Khurshid, Ju Lee Eun, Shaikh Sibhghatulla, Kumar Anuj, Madhusudana Rao Kummara, Park So-Yong, O Jin Jun, Soo Han Sung, Choi InhoAbstractIntegrins are the main cell surface receptors and execute multifaceted functions such as the bidirectional transmission of signals (i.e., inside-out and outside-in) and provide communication between cells and their microenvironments. Integrins are the key regulators of critical biological functions and contribute significantly to the promotion of cancer at almost every stage of disease progr...
Source: Seminars in Cancer Biology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 24 August 2019Source: Seminars in Cancer BiologyAuthor(s): Crescenzo D’Alterio, Stefania Scala, Gabriella Sozzi, Luca Roz, Giulia BertoliniAbstractSeveral lines of compelling pre-clinical evidence identify chemotherapy as a potentially double-edged sword: therapeutic efficacy on the primary tumor may in fact be counterbalanced by the induction of tumor/host reactive responses supportive for survival and dissemination of cancer cell subpopulations. This paradoxical effect of chemotherapy can affect different districts such as the primary tumor, the circulation and distant organs by s...
Source: Seminars in Cancer Biology - Category: Cancer & Oncology Source Type: research
In conclusion, although human studies are needed, NPs obtained from food-derived flavonoids have promising anticancer effects in vivo.
Source: Seminars in Cancer Biology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 24 August 2019Source: Nanomedicine: Nanotechnology, Biology and MedicineAuthor(s): Maha Hafsi, Sandra Preveral, Christopher Hoog, Joel Hérault, Géraldine Adryanczyk Perrier, Christopher T Lefèvre, Hervé Michel, David Pignol, Jérôme Doyen, Thierry Pourcher, Olivier Humbert, Juliette Thariat, Béatrice CambienAbstractAlthough chemically synthesized ferro/ferrimagnetic nanoparticles have attracted great attention in cancer theranostics, they lack radio-enhancement efficacy due to low targeting and internalization ability. Herein, we investigated...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - Category: Nanotechnology Source Type: research
In this study, human serum albumin (HSA) complexed with 5BMF (5BMF@HSA) has been developed to further improve its solubility (from 1.61 to 5.41 mg/mL), and the fluorescent intensity of 5BMF@HSA was improved over 2 times. Nearly 10-fold 5BMF was released from 5BMF@HSA complex in acidic condition when compared with neutral/basic environment. Intracellular distribution of 5BMF was altered by HSA as its signals were observed in lysosomes where free 5BMF barely localized. Both 5BMF@HSA and 5BMF showed selective toxicity toward tumor cells in μM and nM range and effectively inhibited tumor growth in mice model. In summar...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - Category: Nanotechnology Source Type: research
Publication date: December 2019Source: Materials Science and Engineering: C, Volume 105Author(s): Mohamed Gaber, Mark Hany, Sarah Mokhtar, Maged W. Helmy, Kadria A. Elkodairy, Ahmed O. ElzoghbyAbstractMulti-modality strategies of albumin-mediated drug accumulation in tumor, boronate-based active tumor targeting and synergistic cancer therapy were combined together for effective treatment of breast cancer. Herein we report the development of albumin-shell oily-core nanocapsules (NCs), loaded with novel combination of hydrophobic drugs, exemestane (EXE) and hesperetin (HES), for targeted breast cancer therapy. This protein-l...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
Publication date: December 2019Source: Materials Science and Engineering: C, Volume 105Author(s): Sushma Havanur, Inayat Batish, Sri Pragnya Cheruku, Karthik Gourishetti, JagadeeshBabu P.E., Nitesh KumarAbstractCancer has emanated as a daunting menace to human-kind even though medicine, science, and technology has reached its zenith. Subsequent scarcity in the revelation of new drugs, the exigency of salvaging formerly discovered toxic drugs such as doxorubicin has emerged. The invention of drug carrier has made drug delivery imminent which is ascribable to its characteristic traits of specific targeting, effective respons...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
Publication date: Available online 24 August 2019Source: NeuroscienceAuthor(s): Roger D. Madison, Grant A. RobinsonAbstractExtracellular vesicles are lipid bilayer-enclosed extracellular structures. Although the term extracellular vesicles is quite inclusive, it generally refers to exosomes (
Source: Neuroscience - Category: Neuroscience Source Type: research
In this study, a library of P450BM3 mutants was produced using site-directed mutagenesis and the enzymes screened for metabolism of the opium poppy alkaloid noscapine, a drug with anticancer activity. Of the 18 enzyme mutants screened, 12 showed an ability to metabolise noscapine that was not present in the wild-type enzyme. Five noscapine metabolites were detected by LC-MS/MS, with the major metabolite for all mutants being N-demethylated noscapine. The highest observed regioselectivity for N-demethylation was 88%. Two hydroxylated metabolites, a catechol and two C-C cleavage products were also detected. P450-mediated pro...
Source: Biotechnology Reports - Category: Biotechnology Source Type: research
More News: Adenocarcinoma | Biology | Cancer | Cancer & Oncology | Carcinoma | Colon Cancer | Colorectal Cancer | Drugs & Pharmacology | Mitochondrial Disease | Multidrug Resistance | Oral Cancer | Study | Transitional Cell Carcinoma