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Szczygieł D, Szczygieł M, Łaś A, Elas M, Zuziak R, Płonka BK, Płonka PM. Spin Trapping of Nitric Oxide by Hemoglobin and Ferrous Diethyldithiocarbamate in Model Tumors Differing in Vascularization. Int J Mol Sci 2024; 25:4172. [PMID: 38673758 PMCID: PMC11049848 DOI: 10.3390/ijms25084172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
Animal tumors serve as reasonable models for human cancers. Both human and animal tumors often reveal triplet EPR signals of nitrosylhemoglobin (HbNO) as an effect of nitric oxide formation in tumor tissue, where NO is complexed by Hb. In search of factors determining the appearance of nitrosylhemoglobin (HbNO) in solid tumors, we compared the intensities of electron paramagnetic resonance (EPR) signals of various iron-nitrosyl complexes detectable in tumor tissues, in the presence and absence of excess exogenous iron(II) and diethyldithiocarbamate (DETC). Three types of murine tumors, namely, L5178Y lymphoma, amelanotic Cloudman S91 melanoma, and Ehrlich carcinoma (EC) growing in DBA/2 or Swiss mice, were used. The results were analyzed in the context of vascularization determined histochemically using antibodies to CD31. Strong HbNO EPR signals were found in melanoma, i.e., in the tumor with a vast amount of a hemorrhagic necrosis core. Strong Fe(DETC)2NO signals could be induced in poorly vascularized EC. In L5178Y, there was a correlation between both types of signals, and in addition, Fe(RS)2(NO)2 signals of non-heme iron-nitrosyl complexes could be detected. We postulate that HbNO EPR signals appear during active destruction of well-vascularized tumor tissue due to hemorrhagic necrosis. The presence of iron-nitrosyl complexes in tumor tissue is biologically meaningful and defines the evolution of complicated tumor-host interactions.
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Affiliation(s)
- Dariusz Szczygieł
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
| | - Małgorzata Szczygieł
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
| | - Anna Łaś
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
| | - Martyna Elas
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
| | - Roxana Zuziak
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
- Department of Chemistry and Biochemistry, Institute for Basic Sciences, University of Physical Education, 31-571 Krakow, Poland
| | - Beata K Płonka
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
| | - Przemysław M Płonka
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 31-007 Krakow, Poland
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Nomura TK, Endo S, Kuwano T, Fukasawa K, Takashima S, Todo T, Furuta K, Yamamoto T, Hinoi E, Koyama H, Honda R. ARL-17477 is a dual inhibitor of NOS1 and the autophagic-lysosomal system that prevents tumor growth in vitro and in vivo. Sci Rep 2023; 13:10757. [PMID: 37402770 DOI: 10.1038/s41598-023-37797-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 06/28/2023] [Indexed: 07/06/2023] Open
Abstract
ARL-17477 is a selective neuronal nitric oxide synthase (NOS1) inhibitor that has been used in many preclinical studies since its initial discovery in the 1990s. In the present study, we demonstrate that ARL-17477 exhibits a NOS1-independent pharmacological activity that involves inhibition of the autophagy-lysosomal system and prevents cancer growth in vitro and in vivo. Initially, we screened a chemical compound library for potential anticancer agents, and identified ARL-17477 with micromolar anticancer activity against a wide spectrum of cancers, preferentially affecting cancer stem-like cells and KRAS-mutant cancer cells. Interestingly, ARL-17477 also affected NOS1-knockout cells, suggesting the existence of a NOS1-independent anticancer mechanism. Analysis of cell signals and death markers revealed that LC3B-II, p62, and GABARAP-II protein levels were significantly increased by ARL-17477. Furthermore, ARL-17477 had a chemical structure similar to that of chloroquine, suggesting the inhibition of autophagic flux at the level of lysosomal fusion as an underlying anticancer mechanism. Consistently, ARL-17477 induced lysosomal membrane permeabilization, impaired protein aggregate clearance, and activated transcription factor EB and lysosomal biogenesis. Furthermore, in vivo ARL-17477 inhibited the tumor growth of KRAS-mutant cancer. Thus, ARL-17477 is a dual inhibitor of NOS1 and the autophagy-lysosomal system that could potentially be used as a cancer therapeutic.
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Affiliation(s)
- Teiko Komori Nomura
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Satoshi Endo
- Laboratory of Biochemistry, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
| | - Takuma Kuwano
- Laboratory of Pharmaceutical Analytical Chemistry, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuya Fukasawa
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan
| | - Shigeo Takashima
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
- Division of Genomics Research, Life Science Research Center, Gifu University, Gifu, Japan
- Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan
| | - Tomoki Todo
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kyoji Furuta
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Takuhei Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
- Laboratory of Pharmaceutical Analytical Chemistry, Gifu Pharmaceutical University, Gifu, Japan
| | - Eiichi Hinoi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan
| | - Hiroko Koyama
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Ryo Honda
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan.
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan.
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Mauchauffée E, Leroy J, Chamcham J, Ejjoummany A, Maurel M, Nauton L, Ramassamy B, Mezghenna K, Boucher JL, Lajoix AD, Hernandez JF. S-Ethyl-Isothiocitrullin-Based Dipeptides and 1,2,4-Oxadiazole Pseudo-Dipeptides: Solid Phase Synthesis and Evaluation as NO Synthase Inhibitors. Molecules 2023; 28:5085. [PMID: 37446746 DOI: 10.3390/molecules28135085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
We previously reported dipeptidomimetic compounds as inhibitors of neuronal and/or inducible NO synthases (n/iNOS) with significant selectivity against endothelial NOS (eNOS). They were composed of an S-ethylisothiocitrullin-like moiety linked to an extension through a peptide bond or a 1,2,4-oxadiazole link. Here, we developed two further series where the extension size was increased to establish more favorable interactions in the NOS substrate access channel. The extension was introduced on the solid phase by the reductive alkylation of an amino-piperidine moiety or an aminoethyl segment in the case of dipeptide-like and 1,2,4-oxadiazole compounds, respectively, with various benzaldehydes. Compared to the previous series, more potent inhibitors were identified with IC50 in the micromolar to the submicromolar range, with significant selectivity toward nNOS. As expected, most compounds did not inhibit eNOS, and molecular modeling was carried out to characterize the reasons for the selectivity toward nNOS over eNOS. Spectral studies showed that compounds were interacting at the heme active site. Finally, selected inhibitors were found to inhibit intra-cellular iNOS and nNOS expressed in RAW264.7 and INS-1 cells, respectively.
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Affiliation(s)
- Elodie Mauchauffée
- Institut des Biomolécules Max Mousseron, CNRS, Univ. Montpellier, ENSCM, Pôle Chimie Balard, 34293 Montpellier, France
| | - Jérémy Leroy
- Centre Biocommunication en Cardio-Métabolique, Univ. Montpellier, UFR Pharmacie, 34093 Montpellier, France
| | - Jihanne Chamcham
- Institut des Biomolécules Max Mousseron, CNRS, Univ. Montpellier, ENSCM, Pôle Chimie Balard, 34293 Montpellier, France
| | - Abdelaziz Ejjoummany
- Institut des Biomolécules Max Mousseron, CNRS, Univ. Montpellier, ENSCM, Pôle Chimie Balard, 34293 Montpellier, France
| | - Manon Maurel
- Institut des Biomolécules Max Mousseron, CNRS, Univ. Montpellier, ENSCM, Pôle Chimie Balard, 34293 Montpellier, France
| | - Lionel Nauton
- Institut de Chimie de Clermont-Ferrand, Université Clermont-Auvergne, CNRS, 63178 Aubière, France
| | - Booma Ramassamy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Descartes, CEDEX 06, 75270 Paris, France
| | - Karima Mezghenna
- Centre Biocommunication en Cardio-Métabolique, Univ. Montpellier, UFR Pharmacie, 34093 Montpellier, France
| | - Jean-Luc Boucher
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Descartes, CEDEX 06, 75270 Paris, France
| | - Anne-Dominique Lajoix
- Centre Biocommunication en Cardio-Métabolique, Univ. Montpellier, UFR Pharmacie, 34093 Montpellier, France
| | - Jean-François Hernandez
- Institut des Biomolécules Max Mousseron, CNRS, Univ. Montpellier, ENSCM, Pôle Chimie Balard, 34293 Montpellier, France
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Lie KCM, Bonturi CR, Salu BR, de Oliveira JR, Bonini Galo M, Paiva PMG, Correia MTDS, Oliva MLV. Impairment of SK-MEL-28 Development-A Human Melanoma Cell Line-By the Crataeva tapia Bark Lectin and Its Sequence-Derived Peptides. Int J Mol Sci 2023; 24:10617. [PMID: 37445794 DOI: 10.3390/ijms241310617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Melanoma is difficult to treat with chemotherapy, prompting the need for new treatments. Protease inhibitors have emerged as promising candidates as tumor cell proteases promote metastasis. Researchers have developed a chimeric form of the Bauhinia bauhinioides kallikrein inhibitor, rBbKIm, which has shown negative effects on prostate tumor cell lines DU145 and PC3. Crataeva tapia bark lectin, CrataBL, targets sulfated oligosaccharides in glycosylated proteins and has also demonstrated deleterious effects on prostate and glioblastoma tumor cells. However, neither rBbKIm nor its derived peptides affected the viability of SK-MEL-28, a melanoma cell line, while CrataBL decreased viability by over 60%. Two peptides, Pep. 26 (Ac-Q-N-S-S-L-K-V-V-P-L-NH2) and Pep. 27 (Ac-L-P-V-V-K-L-S-S-N-Q-NH2), were also tested. Pep. 27 suppressed cell migration and induced apoptosis when combined with vemurafenib, while Pep. 26 inhibited cell migration and reduced nitric oxide and the number of viable cells. Vemurafenib, a chemotherapy drug used to treat melanoma, was found to decrease the release of interleukin 8 and PDGF-AB/BB cytokines and potentiated the effects of proteins and peptides in reducing these cytokines. These findings suggest that protease inhibitors may be effective in blocking melanoma cells and highlight the potential of CrataBL and its derived peptides.
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Affiliation(s)
| | - Camila Ramalho Bonturi
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo 04044-020, Brazil
| | - Bruno Ramos Salu
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo 04044-020, Brazil
| | | | - Márcia Bonini Galo
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo 04044-020, Brazil
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Vasu D, Reidl CT, Wang E, Yang S, Silverman RB. Improved synthesis and anticancer activity of a potent neuronal nitric oxide synthase inhibitor. Bioorg Med Chem Lett 2023; 90:129329. [PMID: 37196870 PMCID: PMC10330524 DOI: 10.1016/j.bmcl.2023.129329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/23/2023] [Accepted: 05/10/2023] [Indexed: 05/19/2023]
Abstract
An improved synthesis of 4-methyl-7-(3-((methylamino)methyl)phenethyl)quinolin-2-amine (1) is reported. A scalable, rapid, and efficient methodology was developed to access this compound with an overall yield of 35%, which is 5.9-fold higher than the previous report. The key differences in the improved synthesis are a high yielding quinoline synthesis by a Knorr reaction, a copper-mediated Sonogashira coupling to the internal alkyne in excellent yield, and a crucial deprotection of the N-acetyl and N-Boc groups achieved under acidic conditions in a single step rather than a poor yielding quinoline N-oxide strategy, basic deprotection conditions, and low yielding copper-free conditions that were reported in the previous report. Compound 1, which previously was shown to inhibit IFN-γ-induced tumor growth in a human melanoma xenograft mouse model, was found to inhibit the growth of metastatic melanoma, glioblastoma, and hepatocellular carcinoma in vitro.
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Affiliation(s)
- Dhananjayan Vasu
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, United States
| | - Cory T Reidl
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, United States
| | - Eric Wang
- Trabuco Hill High School, Class of 2024, Mission Viejo, CA 92691, United States
| | - Sun Yang
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Irvine, CA 92618, United States
| | - Richard B Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, United States; Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States.
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Eller-Borges R, Rodrigues EG, Teodoro ACS, Moraes MS, Arruda DC, Paschoalin T, Curcio MF, da Costa PE, Do Nascimento IR, Calixto LA, Stern A, Monteiro HP, Batista WL. Bradykinin promotes murine melanoma cell migration and invasion through endogenous production of superoxide and nitric oxide. Nitric Oxide 2023; 132:15-26. [PMID: 36736618 DOI: 10.1016/j.niox.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 12/12/2022] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
Spatial confinement and temporal regulation of signaling by nitric oxide (NO) and reactive oxygen species (ROS) occurs in cancer cells. Signaling mediated by NO and ROS was investigated in two sub clones of the murine melanoma B16F10-Nex2 cell line, Nex10C and Nex8H treated or not with bradykinin (BK). The sub clone Nex10C, similar to primary site cells, has a low capacity for colonizing the lungs, whereas the sub clone Nex8H, similar to metastatic cells, corresponds to a highly invasive melanoma. BK-treated Nex10C cells exhibited a transient increase in NO and an inhibition in basal O2- levels. Inhibition of endogenous NO production by l-NAME resulted in detectable levels of O2-. l-NAME promoted Rac1 activation and enhanced Rac1-PI3K association. l-NAME in the absence of BK resulted in Nex10C cell migration and invasion, suggesting that NO is a negative regulator of O2- mediated cell migration and cell invasion. BK-treated Nex8H cells sustained endogenous NO production through the activation of NOS3. NO activated Rac1 and promoted Rac1-PI3K association. NO stimulated cell migration and cell invasion through a signaling axis involving Ras, Rac1 and PI3K. In conclusion, a role for O2- and NO as positive regulators of Rac1-PI3K signaling associated with cell migration and cell invasion is proposed respectively for Nex10C and Nex8H murine melanoma cells.
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Affiliation(s)
- Roberta Eller-Borges
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Elaine G Rodrigues
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Caroline S Teodoro
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Miriam S Moraes
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Denise C Arruda
- Núcleo Integrado de Biotecnologia (NIB), Universidade de Mogi das Cruzes (UMC), Mogi das Cruzes, São Paulo, Brazil
| | - Thaysa Paschoalin
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marli F Curcio
- Department of Medicine/Infectious Diseases, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Paulo E da Costa
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Igor R Do Nascimento
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Leandro A Calixto
- Department of Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - Arnold Stern
- New York University Grossman School of Medicine, New York, NY, USA
| | - Hugo P Monteiro
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Wagner L Batista
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil; Department of Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil.
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Tong S, Darwish S, Ariani HHN, Lozada KA, Salehi D, Cinelli MA, Silverman RB, Kaur K, Yang S. A Small Peptide Increases Drug Delivery in Human Melanoma Cells. Pharmaceutics 2022; 14:1036. [PMID: 35631623 PMCID: PMC9145755 DOI: 10.3390/pharmaceutics14051036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
Melanoma is the most fatal type of skin cancer and is notoriously resistant to chemotherapies. The response of melanoma to current treatments is difficult to predict. To combat these challenges, in this study, we utilize a small peptide to increase drug delivery to melanoma cells. A peptide library array was designed and screened using a peptide array-whole cell binding assay, which identified KK-11 as a novel human melanoma-targeting peptide. The peptide and its D-amino acid substituted analogue (VPWxEPAYQrFL or D-aa KK-11) were synthesized via a solid-phase strategy. Further studies using FITC-labeled KK-11 demonstrated dose-dependent uptake in human melanoma cells. D-aa KK-11 significantly increased the stability of the peptide, with 45.3% remaining detectable after 24 h with human serum incubation. Co-treatment of KK-11 with doxorubicin was found to significantly enhance the cytotoxicity of doxorubicin compared to doxorubicin alone, or sequential KK-11 and doxorubicin treatment. In vivo and ex vivo imaging revealed that D-aa KK-11 distributed to xenografted A375 melanoma tumors as early as 5 min and persisted up to 24 h post tail vein injection. When co-administered, D-aa KK-11 significantly enhanced the anti-tumor activity of a novel nNOS inhibitor (MAC-3-190) in an A375 human melanoma xenograft mouse model compared to MAC-3-190 treatment alone. No apparent systemic toxicities were observed. Taken together, these results suggest that KK-11 may be a promising human melanoma-targeted delivery vector for anti-melanoma cargo.
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Affiliation(s)
- Shirley Tong
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.T.); (K.A.L.)
| | - Shaban Darwish
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.D.); (H.H.N.A.); (D.S.)
| | - Hanieh Hossein Nejad Ariani
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.D.); (H.H.N.A.); (D.S.)
| | - Kate Alison Lozada
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.T.); (K.A.L.)
| | - David Salehi
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.D.); (H.H.N.A.); (D.S.)
| | - Maris A. Cinelli
- Center for Developmental Therapeutics, Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA; (M.A.C.); (R.B.S.)
| | - Richard B. Silverman
- Center for Developmental Therapeutics, Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA; (M.A.C.); (R.B.S.)
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Kamaljit Kaur
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.D.); (H.H.N.A.); (D.S.)
| | - Sun Yang
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (S.T.); (K.A.L.)
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The Double-Edged Sword of Oxidative Stress in Skin Damage and Melanoma: From Physiopathology to Therapeutical Approaches. Antioxidants (Basel) 2022; 11:antiox11040612. [PMID: 35453297 PMCID: PMC9027913 DOI: 10.3390/antiox11040612] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 02/06/2023] Open
Abstract
The skin is constantly exposed to exogenous and endogenous sources of reactive oxygen species (ROS). An adequate balance between ROS levels and antioxidant defenses is necessary for the optimal cell and tissue functions, especially for the skin, since it must face additional ROS sources that do not affect other tissues, including UV radiation. Melanocytes are more exposed to oxidative stress than other cells, also due to the melanin production process, which itself contributes to generating ROS. There is an increasing amount of evidence that oxidative stress may play a role in many skin diseases, including melanoma, being the primary cause or being a cofactor that aggravates the primary condition. Indeed, oxidative stress is emerging as another major force involved in all the phases of melanoma development, not only in the arising of the malignancy but also in the progression toward the metastatic phenotype. Furthermore, oxidative stress seems to play a role also in chemoresistance and thus has become a target for therapy. In this review, we discuss the existing knowledge on oxidative stress in the skin, examining sources and defenses, giving particular consideration to melanocytes. Therefore, we focus on the significance of oxidative stress in melanoma, thus analyzing the possibility to exploit the induction of oxidative stress as a therapeutic strategy to improve the effectiveness of therapeutic management of melanoma.
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Carpenter EL, Becker AL, Indra AK. NRF2 and Key Transcriptional Targets in Melanoma Redox Manipulation. Cancers (Basel) 2022; 14:cancers14061531. [PMID: 35326683 PMCID: PMC8946769 DOI: 10.3390/cancers14061531] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 02/04/2023] Open
Abstract
Melanocytes are dendritic, pigment-producing cells located in the skin and are responsible for its protection against the deleterious effects of solar ultraviolet radiation (UVR), which include DNA damage and elevated reactive oxygen species (ROS). They do so by synthesizing photoprotective melanin pigments and distributing them to adjacent skin cells (e.g., keratinocytes). However, melanocytes encounter a large burden of oxidative stress during this process, due to both exogenous and endogenous sources. Therefore, melanocytes employ numerous antioxidant defenses to protect themselves; these are largely regulated by the master stress response transcription factor, nuclear factor erythroid 2-related factor 2 (NRF2). Key effector transcriptional targets of NRF2 include the components of the glutathione and thioredoxin antioxidant systems. Despite these defenses, melanocyte DNA often is subject to mutations that result in the dysregulation of the proliferative mitogen-activated protein kinase (MAPK) pathway and the cell cycle. Following tumor initiation, endogenous antioxidant systems are co-opted, a consequence of elevated oxidative stress caused by metabolic reprogramming, to establish an altered redox homeostasis. This altered redox homeostasis contributes to tumor progression and metastasis, while also complicating the application of exogenous antioxidant treatments. Further understanding of melanocyte redox homeostasis, in the presence or absence of disease, would contribute to the development of novel therapies to aid in the prevention and treatment of melanomas and other skin diseases.
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Affiliation(s)
- Evan L. Carpenter
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA; (E.L.C.); (A.L.B.)
| | - Alyssa L. Becker
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA; (E.L.C.); (A.L.B.)
- John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA
| | - Arup K. Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA; (E.L.C.); (A.L.B.)
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA
- Linus Pauling Science Center, Oregon State University, Corvallis, OR 97331, USA
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
- Correspondence:
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Fornasiero F, Scapin C, Vitadello M, Pizzo P, Gorza L. Active nNOS Is Required for Grp94-Induced Antioxidant Cytoprotection: A Lesson from Myogenic to Cancer Cells. Int J Mol Sci 2022; 23:ijms23062915. [PMID: 35328344 PMCID: PMC8954037 DOI: 10.3390/ijms23062915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
The endoplasmic reticulum (ER) chaperone Grp94/gp96 appears to be involved in cytoprotection without being required for cell survival. This study compared the effects of Grp94 protein levels on Ca2+ homeostasis, antioxidant cytoprotection and protein–protein interactions between two widely studied cell lines, the myogenic C2C12 and the epithelial HeLa, and two breast cancer cell lines, MDA-MB-231 and HS578T. In myogenic cells, but not in HeLa, Grp94 overexpression exerted cytoprotection by reducing ER Ca2+ storage, due to an inhibitory effect on SERCA2. In C2C12 cells, but not in HeLa, Grp94 co-immunoprecipitated with non-client proteins, such as nNOS, SERCA2 and PMCA, which co-fractionated by sucrose gradient centrifugation in a distinct, medium density, ER vesicular compartment. Active nNOS was also required for Grp94-induced cytoprotection, since its inhibition by L-NNA disrupted the co-immunoprecipitation and co-fractionation of Grp94 with nNOS and SERCA2, and increased apoptosis. Comparably, only the breast cancer cell line MDA-MB-231, which showed Grp94 co-immunoprecipitation with nNOS, SERCA2 and PMCA, increased oxidant-induced apoptosis after nNOS inhibition or Grp94 silencing. These results identify the Grp94-driven multiprotein complex, including active nNOS as mechanistically involved in antioxidant cytoprotection by means of nNOS activity and improved Ca2+ homeostasis.
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Affiliation(s)
- Filippo Fornasiero
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
| | - Cristina Scapin
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
| | - Maurizio Vitadello
- CNR-Neuroscience Institute, National Research Council, 35131 Padova, Italy;
| | - Paola Pizzo
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
- CNR-Neuroscience Institute, National Research Council, 35131 Padova, Italy;
| | - Luisa Gorza
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
- Correspondence:
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11
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Carvalho LAC, Queijo RG, Baccaro ALB, Siena ÁDD, Silva WA, Rodrigues T, Maria-Engler SS. Redox-Related Proteins in Melanoma Progression. Antioxidants (Basel) 2022; 11:antiox11030438. [PMID: 35326089 PMCID: PMC8944639 DOI: 10.3390/antiox11030438] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/05/2022] [Accepted: 02/14/2022] [Indexed: 02/06/2023] Open
Abstract
Melanoma is the most aggressive type of skin cancer. Despite the available therapies, the minimum residual disease is still refractory. Reactive oxygen and nitrogen species (ROS and RNS) play a dual role in melanoma, where redox imbalance is involved from initiation to metastasis and resistance. Redox proteins modulate the disease by controlling ROS/RNS levels in immune response, proliferation, invasion, and relapse. Chemotherapeutics such as BRAF and MEK inhibitors promote oxidative stress, but high ROS/RNS amounts with a robust antioxidant system allow cells to be adaptive and cooperate to non-toxic levels. These proteins could act as biomarkers and possible targets. By understanding the complex mechanisms involved in adaptation and searching for new targets to make cells more susceptible to treatment, the disease might be overcome. Therefore, exploring the role of redox-sensitive proteins and the modulation of redox homeostasis may provide clues to new therapies. This study analyzes information obtained from a public cohort of melanoma patients about the expression of redox-generating and detoxifying proteins in melanoma during the disease stages, genetic alterations, and overall patient survival status. According to our analysis, 66% of the isoforms presented differential expression on melanoma progression: NOS2, SOD1, NOX4, PRX3, PXDN and GPX1 are increased during melanoma progression, while CAT, GPX3, TXNIP, and PRX2 are decreased. Besides, the stage of the disease could influence the result as well. The levels of PRX1, PRX5 and PRX6 can be increased or decreased depending on the stage. We showed that all analyzed isoforms presented some genetic alteration on the gene, most of them (78%) for increased mRNA expression. Interestingly, 34% of all melanoma patients showed genetic alterations on TRX1, most for decreased mRNA expression. Additionally, 15% of the isoforms showed a significant reduction in overall patient survival status for an altered group (PRX3, PRX5, TR2, and GR) and the unaltered group (NOX4). Although no such specific antioxidant therapy is approved for melanoma yet, inhibitors or mimetics of these redox-sensitive proteins have achieved very promising results. We foresee that forthcoming investigations on the modulation of these proteins will bring significant advances for cancer therapy.
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Affiliation(s)
- Larissa A. C. Carvalho
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 580, São Paulo 05508-00, SP, Brazil; (L.A.C.C.); (R.G.Q.)
| | - Rodrigo G. Queijo
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 580, São Paulo 05508-00, SP, Brazil; (L.A.C.C.); (R.G.Q.)
| | - Alexandre L. B. Baccaro
- Centro de Pós-Graduação e Pesquisa Oswaldo Cruz, Faculdade Oswaldo Cruz, Rua Brigadeiro Galvão, 535, Sao Paulo 01151-000, SP, Brazil;
| | - Ádamo D. D. Siena
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirao Preto 14049-900, SP, Brazil; (Á.D.D.S.); (W.A.S.J.)
| | - Wilson A. Silva
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirao Preto 14049-900, SP, Brazil; (Á.D.D.S.); (W.A.S.J.)
| | - Tiago Rodrigues
- Center for Natural and Human Sciences, Federal University of ABC, Avenida dos Estados, 5001, Santo Andre 09210-580, SP, Brazil;
| | - Silvya Stuchi Maria-Engler
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 580, São Paulo 05508-00, SP, Brazil; (L.A.C.C.); (R.G.Q.)
- Correspondence:
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12
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Tong S, Cinelli MA, El-Sayed NS, Huang H, Patel A, Silverman RB, Yang S. Inhibition of interferon-gamma-stimulated melanoma progression by targeting neuronal nitric oxide synthase (nNOS). Sci Rep 2022; 12:1701. [PMID: 35105915 PMCID: PMC8807785 DOI: 10.1038/s41598-022-05394-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/24/2021] [Indexed: 02/07/2023] Open
Abstract
Interferon-gamma (IFN-γ) is shown to stimulate melanoma development and progression. However, the underlying mechanism has not been completely defined. Our study aimed to determine the role of neuronal nitric oxide synthase (nNOS)-mediated signaling in IFN-γ-stimulated melanoma progression and the anti-melanoma effects of novel nNOS inhibitors. Our study shows that IFN-γ markedly induced the expression levels of nNOS in melanoma cells associated with increased intracellular nitric oxide (NO) levels. Co-treatment with novel nNOS inhibitors effectively alleviated IFN-γ-activated STAT1/3. Further, reverse phase protein array (RPPA) analysis demonstrated that IFN-γ induced the expression of HIF1α, c-Myc, and programmed death-ligand 1 (PD-L1), in contrast to IFN-α. Blocking the nNOS-mediated signaling pathway using nNOS-selective inhibitors was shown to effectively diminish IFN-γ-induced PD-L1 expression in melanoma cells. Using a human melanoma xenograft mouse model, the in vivo studies revealed that IFN-γ increased tumor growth compared to control, which was inhibited by the co-administration of nNOS inhibitor MAC-3-190. Another nNOS inhibitor, HH044, was shown to effectively inhibit in vivo tumor growth and was associated with reduced PD-L1 expression levels in melanoma xenografts. Our study demonstrates the important role of nNOS-mediated NO signaling in IFN-γ-stimulated melanoma progression. Targeting nNOS using highly selective small molecular inhibitors is a unique and effective strategy to improve melanoma treatment.
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Affiliation(s)
- Shirley Tong
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, #297-Y, 9401 Jeronimo Road, Irvine, CA, 92618, USA
| | - Maris A Cinelli
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL, 60208, USA
| | - Naglaa Salem El-Sayed
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, #297-Y, 9401 Jeronimo Road, Irvine, CA, 92618, USA
| | - He Huang
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL, 60208, USA
| | - Anika Patel
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, #297-Y, 9401 Jeronimo Road, Irvine, CA, 92618, USA
| | - Richard B Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL, 60208, USA.,Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Sun Yang
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, #297-Y, 9401 Jeronimo Road, Irvine, CA, 92618, USA.
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Oxidative Stress-Related Mechanisms in Melanoma and in the Acquired Resistance to Targeted Therapies. Antioxidants (Basel) 2021; 10:antiox10121942. [PMID: 34943045 PMCID: PMC8750393 DOI: 10.3390/antiox10121942] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 02/06/2023] Open
Abstract
Melanoma is a highly aggressive cancer with the poorest prognosis, representing the deadliest form of skin cancer. Activating mutations in BRAF are the most frequent genetic alterations, present in approximately 50% of all melanoma cases. The use of specific inhibitors towards mutant BRAF variants and MEK, a downstream signaling target of BRAF in the MAPK pathway, has significantly improved progression-free and overall survival in advanced melanoma patients carrying BRAF mutations. Nevertheless, despite these improvements, resistance still develops within the first year of therapy in around 50% of patients, which is a significant problem in managing BRAF-mutated advanced melanoma. Understanding these mechanisms is one of the mainstreams of the research on BRAFi/MEKi acquired resistance. Both genetic and epigenetic mechanisms have been described. Moreover, in recent years, oxidative stress has emerged as another major force involved in all the phases of melanoma development, from initiation to progression until the onsets of the metastatic phenotype and chemoresistance, and has thus become a target for therapy. In the present review, we discuss the current knowledge on oxidative stress and its signaling in melanoma, as well as the oxidative stress-related mechanisms in the acquired resistance to targeted therapies.
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14
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In silico modeling and molecular docking insights of kaempferitrin for colon cancer-related molecular targets. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Yan L, Wang Y, Zhang S, Li X, Wei J, Wang Z, Liu Y. Inactivation Mechanism of Neuronal Nitric Oxide Synthase by ( S)-2-Amino-5-(2-(methylthio)acetimidamido)pentanoic Acid: Chemical Conversion of the Inactivator in the Active Site. Inorg Chem 2021; 60:9345-9358. [PMID: 34137256 DOI: 10.1021/acs.inorgchem.1c00046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Neuronal nitric oxide synthase (nNOS) is one of the three isoforms of nitric oxide synthase (NOS). The other two isoforms include inducible NOS (iNOS) and endothelial NOS (eNOS). These three isoforms of NOS are widely present in both human and other mammals and are responsible for the biosynthesis of NO. As an essential biological molecule, NO plays an essential role in neurotransmission, immune response, and vasodilation; however, the overproduction of NO can cause a series of diseases. Thus, the selective inhibition of three isoforms of NOS has been considered to be important in treating related diseases. The active sites of the three enzymes are highly conserved, causing the selective inhibition of the three enzymes to be a great challenge. (S)-2-Amino-5-(2-(methylthio)acetimidamido)pentanoic acid (1) has been experimentally proved to be a selective and time-dependent irreversible inhibitor of nNOS, and three pathways, including sulfide oxidation, oxidative dethiolation, and oxidative demethylation, have been suggested. In this work, we performed quantum mechanics/molecular mechanics calculations to verify the chemical conversion of inactivator 1. Although we agree with the previously suggested chemical transformation process, our calculations demonstrated that there are lower energy pathways to accomplish both oxidative dethiolation and oxidative demethylation. These three branching reactions are competitive, but only dethiolation and demethylation reactions can generate inhibitory intermediates. As a powerful time-dependent irreversible inhibitor of nNOS, the key sulfur atom and middle imine are all necessary. Our calculation results not only verified the chemical reaction of inhibitor 1 occurring in the enzymatic active site but also explained the inactivation mechanism of inhibitor 1. This is also the first verified example of the heme-enzyme-catalyzed S-demethylation mechanism.
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Affiliation(s)
- Lijuan Yan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Yijing Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Shiqing Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Xinyi Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Jingjing Wei
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Zhiguo Wang
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Yongjun Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
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16
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Zhu SY, Liu LL, Huang YQ, Li XW, Talukder M, Dai XY, Li YH, Li JL. In silico analysis of selenoprotein N (Gallus gallus): absence of EF-hand motif and the role of CUGS-helix domain in antioxidant protection. Metallomics 2021; 13:6132312. [PMID: 33693771 DOI: 10.1093/mtomcs/mfab004] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/13/2022]
Abstract
Selenoprotein N (SEPN1) is critical to the normal muscular physiology. Mutation of SEPN1 can raise congenital muscular disorder in human. It is also central to maturation and structure of skeletal muscle in chicken. However, human SEPN1 contained an EF-hand motif, which was not found in chicken. And the biochemical and molecular characterization of chicken SEPN1 remains unclear. Hence, protein domains, transcription factors, and interactions of Ca2+ in SEPN1 were analyzed in silico to provide the divergence and homology between chicken and human in this work. The results showed that vertebrates' SEPN1 evolved from a common ancestor. Human and chicken's SEPN1 shared a conserved CUGS-helix domain with function in antioxidant protection. SEPN1 might be a downstream target of JNK pathway, and it could respond to multiple stresses. Human's SEPN1 might not combine with Ca2+ with a single EF-hand motif in calcium homeostasis, and chicken SEPN1 did not have the EF-hand motif in the prediction, indicating the EF-hand motif malfunctioned in chicken SEPN1.
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Affiliation(s)
- Shi-Yong Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Li-Li Liu
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Yue-Qiang Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Xiao-Wei Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Milton Talukder
- Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal 8210, Bangladesh
| | - Xue-Yan Dai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Yan-Hua Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China.,Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P. R. China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
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17
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Nan A, Suciu M, Ardelean I, Şenilă M, Turcu R. Characterization of the Nuclear Magnetic Resonance Relaxivity of Gadolinium Functionalized Magnetic Nanoparticles. ANAL LETT 2021. [DOI: 10.1080/00032719.2020.1731522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Alexandrina Nan
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Maria Suciu
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ioan Ardelean
- Department of Physics and Chemistry, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - Marin Şenilă
- INCDO-INOE 2000, Research Institute for Analytical Instrumentation, Cluj-Napoca, Romania
| | - Rodica Turcu
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
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18
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Zárate LV, Pontillo CA, Español A, Miret NV, Chiappini F, Cocca C, Álvarez L, de Pisarev DK, Sales ME, Randi AS. Angiogenesis signaling in breast cancer models is induced by hexachlorobenzene and chlorpyrifos, pesticide ligands of the aryl hydrocarbon receptor. Toxicol Appl Pharmacol 2020; 401:115093. [PMID: 32526215 DOI: 10.1016/j.taap.2020.115093] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 12/26/2022]
Abstract
Breast cancer incidence is increasing globally and pesticides exposure may impact risk of developing this disease. Hexachlorobenzene (HCB) and chlorpyrifos (CPF) act as endocrine disruptors, inducing proliferation in breast cancer cells. Vascular endothelial growth factor-A (VEGF-A), cyclooxygenase-2 (COX-2) and nitric oxide (NO) are associated with angiogenesis. Our aim was to evaluate HCB and CPF action, both weak aryl hydrocarbon receptor (AhR) ligands, on angiogenesis in breast cancer models. We used: (1) in vivo xenograft model with MCF-7 cells, (2) in vitro breast cancer model with MCF-7, and (3) in vitro neovasculogenesis model with endothelial cells exposed to conditioned medium from MCF-7. Results show that HCB (3 mg/kg) and CPF (0.1 mg/kg) stimulated vascular density in the in vivo model. HCB and CPF low doses enhanced VEGF-A and COX-2 expression, accompanied by increased levels of nitric oxide synthases (NOS), and NO release in MCF-7. HCB and CPF high doses intensified VEGF-A and COX-2 levels but rendered different effects on NOS, however, both pesticides reduced NO production. Moreover, our data indicate that HCB and CPF-induced VEGF-A expression is mediated by estrogen receptor and NO, while the increase in COX-2 is through AhR and NO pathways in MCF-7. In conclusion, we demonstrate that HCB and CPF environmental concentrations stimulate angiogenic switch in vivo. Besides, pesticides induce VEGF-A and COX-2 expression, as well as NO production in MCF-7, promoting tubulogenesis in endothelial cells. These findings show that pesticide exposure could stimulate angiogenesis, a process that has been demonstrated to contribute to breast cancer progression.
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Affiliation(s)
- Lorena V Zárate
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - Carolina A Pontillo
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - Alejandro Español
- Universidad de Buenos Aires, Facultad de Medicina, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Paraguay 2155, 16 piso, (CP1121), Buenos Aires, Argentina.
| | - Noelia V Miret
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - Florencia Chiappini
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - Claudia Cocca
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Laboratorio de Radioisótopos, Junín 954, subsuelo, (CP1113), Buenos Aires, Argentina.
| | - Laura Álvarez
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - Diana Kleiman de Pisarev
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
| | - María E Sales
- Universidad de Buenos Aires, Facultad de Medicina, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Paraguay 2155, 16 piso, (CP1121), Buenos Aires, Argentina.
| | - Andrea S Randi
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, 5to piso, (CP1121), Buenos Aires, Argentina.
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19
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The Combination of Sulforaphane and Fernblock ® XP Improves Individual Beneficial Effects in Normal and Neoplastic Human Skin Cell Lines. Nutrients 2020; 12:nu12061608. [PMID: 32486135 PMCID: PMC7353001 DOI: 10.3390/nu12061608] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 05/29/2020] [Indexed: 12/22/2022] Open
Abstract
Plenty of evidence supports the health effects exerted by dietary supplements containing phytochemicals, but the actual efficacy and safety of their combinations have been seldom experimentally evaluated. On this basis, we investigated in vitro the antioxidant/antineoplastic efficacy and anti-aging activity of a dietary supplement containing sulforaphane (SFN), a sulfur-isothiocyanate present in broccoli, combined with the patented extract Fernblock® XP (FB), obtained from the tropical fern Polypodium leucotomos. We evaluated the effect of SFN and FB, alone or in combination, on migration ability, matrix metalloproteinases (MMP) production, neoangiogenic potential and inflammasome activation in human WM115 and WM266-4 melanoma cells. Moreover, the effects on MMPs and reactive oxygen species production, and IL-1β secretion were studied in human normal keratinocytes. The SFN/FB combination inhibited melanoma cell migration in vitro, MMP-1, -2, -3, and -9 production, inflammasome activation and IL-1β secretion more efficiently than each individual compound did. In normal keratinocytes, SFN/FB was more efficient than SFN or FB alone in inhibiting MMP-1 and -3 production and IL-1β secretion in the presence of a pro-inflammatory stimulus such as TNF-α. The potential use of SFN/FB based supplements for the prevention of skin aging and as adjuvants in the treatment of advanced melanoma is suggested.
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20
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Obrador E, Salvador R, López-Blanch R, Jihad-Jebbar A, Alcácer J, Benlloch M, Pellicer JA, Estrela JM. Melanoma in the liver: Oxidative stress and the mechanisms of metastatic cell survival. Semin Cancer Biol 2020; 71:109-121. [PMID: 32428715 DOI: 10.1016/j.semcancer.2020.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/03/2020] [Accepted: 05/03/2020] [Indexed: 12/16/2022]
Abstract
Metastatic melanoma is a fatal disease with a rapid systemic dissemination. The most frequent target sites are the liver, bone, and brain. Melanoma metastases represent a heterogeneous cell population, which associates with genomic instability and resistance to therapy. Interaction of melanoma cells with the hepatic sinusoidal endothelium initiates a signaling cascade involving cytokines, growth factors, bioactive lipids, and reactive oxygen and nitrogen species produced by the cancer cell, the endothelium, and also by different immune cells. Endothelial cell-derived NO and H2O2 and the action of immune cells cause the death of most melanoma cells that reach the hepatic microvascularization. Surviving melanoma cells attached to the endothelium of pre-capillary arterioles or sinusoids may follow two mechanisms of extravasation: a) migration through vessel fenestrae or b) intravascular proliferation followed by vessel rupture and microinflammation. Invading melanoma cells first form micrometastases within the normal lobular hepatic architecture via a mechanism regulated by cross-talk with the stroma and multiple microenvironment-related molecular signals. In this review special emphasis is placed on neuroendocrine (systemic) mechanisms as potential promoters of liver metastatic growth. Growing metastatic cells undergo functional and metabolic changes that increase their capacity to withstand oxidative/nitrosative stress, which favors their survival. This adaptive process also involves upregulation of Bcl-2-related antideath mechanisms, which seems to lead to the generation of more resistant cell subclones.
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Affiliation(s)
- Elena Obrador
- Department of Physiology, University of Valencia, 46010, Valencia, Spain
| | - Rosario Salvador
- Department of Physiology, University of Valencia, 46010, Valencia, Spain
| | | | - Ali Jihad-Jebbar
- Department of Physiology, University of Valencia, 46010, Valencia, Spain
| | - Javier Alcácer
- Pathology Laboratory, Quirón Hospital, 46010, Valencia, Spain
| | - María Benlloch
- Department of Health & Functional Valorization, San Vicente Martir Catholic University, 46001, Valencia, Spain
| | - José A Pellicer
- Department of Physiology, University of Valencia, 46010, Valencia, Spain
| | - José M Estrela
- Department of Physiology, University of Valencia, 46010, Valencia, Spain.
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Sadaf S, Awasthi D, Singh AK, Nagarkoti S, Kumar S, Barthwal MK, Dikshit M. Pyroptotic and apoptotic cell death in iNOS and nNOS overexpressing K562 cells: A mechanistic insight. Biochem Pharmacol 2019; 176:113779. [PMID: 31881190 DOI: 10.1016/j.bcp.2019.113779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/23/2019] [Indexed: 12/21/2022]
Abstract
Previous studies from this lab and others have demonstrated that nitric oxide (NO) in a concentration dependent manner, modulated neutrophil and leukemic cell survival. Subsequent studies delineated importance of iNOS in neutrophil differentiation and leukemic cell death. On the contrary, role of nNOS in survival of these cells remains least understood. Present study was therefore undertaken to assess and compare the role of iNOS and nNOS in the survival of NOS overexpressing myelocytic K562 cells. Cells with almost similar iNOS and nNOS activities displayed comparable cell cycle perturbation, Annexin V positivity, mitochondrial dysfunction, augmented DCF fluorescence, and also attenuated expression of antioxidants. Moreover, induction in cell death was also accompanied by the activation of pJNK/p38MAPK/Erk1/2 and reduction in PI3K/Akt/mTOR signaling. Treatment of NOS isoform overexpressing K562 cells with NAC, a potent free radical scavenger prevented cell death and also the modulations in the signaling proteins. In addition, enhanced expression of CASP1 and CASP4 genes, along with increased Caspase-1 cleavage and increased IL-1β release were significantly more in K562iNOS cells, which indicate priming of these cells for pyroptotic cell death. On the other hand, K562nNOS cells, displayed much enhanced CASP3 gene expression, Caspase-3 cleavage and Caspase-3 activity. Results obtained indicate that similar level of iNOS or nNOS activation in K562 cells, preferred pyroptotic and apoptotic cell death respectively.
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Affiliation(s)
- Samreen Sadaf
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Deepika Awasthi
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | | | - Sheela Nagarkoti
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Sachin Kumar
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | | | - Madhu Dikshit
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India.
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22
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Obrador E, Liu-Smith F, Dellinger RW, Salvador R, Meyskens FL, Estrela JM. Oxidative stress and antioxidants in the pathophysiology of malignant melanoma. Biol Chem 2019; 400:589-612. [PMID: 30352021 DOI: 10.1515/hsz-2018-0327] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/09/2018] [Indexed: 02/07/2023]
Abstract
The high number of somatic mutations in the melanoma genome associated with cumulative ultra violet (UV) exposure has rendered it one of the most difficult of cancers to treat. With new treatment approaches based on targeted and immune therapies, drug resistance has appeared as a consistent problem. Redox biology, including reactive oxygen and nitrogen species (ROS and RNS), plays a central role in all aspects of melanoma pathophysiology, from initiation to progression and to metastatic cells. The involvement of melanin production and UV radiation in ROS/RNS generation has rendered the melanocytic lineage a unique system for studying redox biology. Overall, an elevated oxidative status has been associated with melanoma, thus much effort has been expended to prevent or treat melanoma using antioxidants which are expected to counteract oxidative stress. The consequence of this redox-rebalance seems to be two-fold: on the one hand, cells may behave less aggressively or even undergo apoptosis; on the other hand, cells may survive better after being disseminated into the circulating system or after drug treatment, thus resulting in metastasis promotion or further drug resistance. In this review we summarize the current understanding of redox signaling in melanoma at cellular and systemic levels and discuss the experimental and potential clinic use of antioxidants and new epigenetic redox modifiers.
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Affiliation(s)
- Elena Obrador
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
| | - Feng Liu-Smith
- Department of Epdemiology, Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA
| | | | - Rosario Salvador
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
| | - Frank L Meyskens
- Department of Epdemiology, Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, Chao Family Comprehensive Cancer Center, University of California, Irvine, CA 92697, USA
| | - José M Estrela
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
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Xu P, Ye S, Li K, Huang M, Wang Q, Zeng S, Chen X, Gao W, Chen J, Zhang Q, Zhong Z, Lin Y, Rong Z, Xu Y, Hao B, Peng A, Ouyang M, Liu Q. NOS1 inhibits the interferon response of cancer cells by S-nitrosylation of HDAC2. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:483. [PMID: 31805977 PMCID: PMC6896289 DOI: 10.1186/s13046-019-1448-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/15/2019] [Indexed: 12/14/2022]
Abstract
Background The dysfunction of type I interferon (IFN) signaling is an important mechanism of immune escape and metastasis in tumors. Increased NOS1 expression has been detected in melanoma, which correlated with dysfunctional IFN signaling and poor response to immunotherapy, but the specific mechanism has not been determined. In this study, we investigated the regulation of NOS1 on the interferon response and clarified the relevant molecular mechanisms. Methods After stable transfection of A375 cells with NOS1 expression plasmids, the transcription and expression of IFNα-stimulated genes (ISGs) were assessed using pISRE luciferase reporter gene analysis, RT-PCR, and western blotting, respectively. The effect of NOS1 on lung metastasis was assessed in melanoma mouse models. A biotin-switch assay was performed to detect the S-nitrosylation of HDAC2 by NOS1. ChIP-qPCR was conducted to measure the binding of HDAC2, H4K16ac, H4K5ac, H3ac, and RNA polymerase II in the promoters of ISGs after IFNα stimulation. This effect was further evaluated by altering the expression level of HDAC2 or by transfecting the HDAC2-C262A/C274A site mutant plasmids into cells. The coimmunoprecipitation assay was performed to detect the interaction of HDAC2 with STAT1 and STAT2. Loss-of-function and gain-of-function approaches were used to examine the effect of HDAC2-C262A/C274A on lung metastasis. Tumor infiltrating lymphocytes were analyzed by flow cytometry. Results HDAC2 is recruited to the promoter of ISGs and deacetylates H4K16 for the optimal expression of ISGs in response to IFNα treatment. Overexpression of NOS1 in melanoma cells decreases IFNα-responsiveness and induces the S-nitrosylation of HDAC2-C262/C274. This modification decreases the binding of HDAC2 with STAT1, thereby reducing the recruitment of HDAC2 to the ISG promoter and the deacetylation of H4K16. Moreover, expression of a mutant form of HDAC2, which cannot be nitrosylated, reverses the inhibition of ISG expression by NOS1 in vitro and decreases NOS1-induced lung metastasis and inhibition of tumor infiltrating lymphocytes in a melanoma mouse model. Conclusions This study provides evidence that NOS1 induces dysfunctional IFN signaling to promote lung metastasis in melanoma, highlighting NOS1-induced S-nitrosylation of HDAC2 in the regulation of IFN signaling via histone modification.
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Affiliation(s)
- Pengfei Xu
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Shuangyan Ye
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Keyi Li
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Mengqiu Huang
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Qianli Wang
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Sisi Zeng
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Xi Chen
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Wenwen Gao
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Jianping Chen
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Qianbing Zhang
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Zhuo Zhong
- Department of Oncology, Guangzhou Hospital of Integrated Traditional and Western Medicine, Guangzhou, 510800, China
| | - Ying Lin
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Zhili Rong
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Yang Xu
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Bingtao Hao
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Anghui Peng
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Manzhao Ouyang
- Center for medical transformation, Shunde Hospital, Southern Medical University, Foshan, 528308, China
| | - Qiuzhen Liu
- Cancer Research Institute, Guangdong Provincial Key Laboratory of Cancer Immunotherapy, Guangzhou key laboratory of tumor immunology research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China. .,Center for medical transformation, Shunde Hospital, Southern Medical University, Foshan, 528308, China.
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Nitric oxide and interactions with reactive oxygen species in the development of melanoma, breast, and colon cancer: A redox signaling perspective. Nitric Oxide 2019; 89:1-13. [DOI: 10.1016/j.niox.2019.04.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022]
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Ombra MN, Paliogiannis P, Stucci LS, Colombino M, Casula M, Sini MC, Manca A, Palomba G, Stanganelli I, Mandalà M, Gandini S, Lissia A, Doneddu V, Cossu A, Palmieri G. Dietary compounds and cutaneous malignant melanoma: recent advances from a biological perspective. Nutr Metab (Lond) 2019; 16:33. [PMID: 31139235 PMCID: PMC6528337 DOI: 10.1186/s12986-019-0365-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 05/12/2019] [Indexed: 12/31/2022] Open
Abstract
Cutaneous malignant melanoma is a heterogeneous disease, being the consequence of specific genetic alterations along several molecular pathways. Despite the increased knowledge about the biology and pathogenesis of melanoma, the incidence has grown markedly worldwide, making it extremely important to develop preventive measures. The beneficial role of correct nutrition and of some natural dietary compounds in preventing malignant melanoma has been widely demonstrated. This led to numerous studies investigating the role of several dietary attitudes, patterns, and supplements in the prevention of melanoma, and ongoing research investigates their impact in the clinical management and outcomes of patients diagnosed with the disease. This article is an overview of recent scientific advances regarding specific dietary compounds and their impact on melanoma development and treatment.
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Affiliation(s)
- Maria Neve Ombra
- 1Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Panagiotis Paliogiannis
- 2Department of Medical, Surgical and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100 Sassari, Italy
| | - Luigia Stefania Stucci
- 3Department of Biomedical Sciences and Human Oncology, University of Bari 'Aldo Moro', Bari, Italy
| | - Maria Colombino
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Milena Casula
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Maria Cristina Sini
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Antonella Manca
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Grazia Palomba
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Ignazio Stanganelli
- 5Istituto Scientifico Romagnolo per Studio e Cura Tumori (IRST-IRCCS), Meldola, Italy
| | - Mario Mandalà
- 6Medical Oncology, "Papa Giovanni XXIII" Hospital, Bergamo, Italy
| | - Sara Gandini
- 7Division of Epidemiology and Biostatistics, European Institute of Oncology, Milan, Italy
| | - Amelia Lissia
- 2Department of Medical, Surgical and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100 Sassari, Italy
| | - Valentina Doneddu
- 2Department of Medical, Surgical and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100 Sassari, Italy
| | - Antonio Cossu
- 2Department of Medical, Surgical and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100 Sassari, Italy
| | - Giuseppe Palmieri
- 4Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
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Li H, Evenson RJ, Chreifi G, Silverman RB, Poulos TL. Structural Basis for Isoform Selective Nitric Oxide Synthase Inhibition by Thiophene-2-carboximidamides. Biochemistry 2018; 57:6319-6325. [PMID: 30335983 PMCID: PMC6282162 DOI: 10.1021/acs.biochem.8b00895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The overproduction of nitric oxide in the brain by neuronal nitric oxide synthase (nNOS) is associated with a number of neurodegenerative diseases. Although inhibiting nNOS is an important therapeutic goal, it is important not to inhibit endothelial NOS (eNOS) because of the critical role played by eNOS in maintaining vascular tone. While it has been possible to develop nNOS selective aminopyridine inhibitors, many of the most potent and selective inhibitors exhibit poor bioavailability properties. Our group and others have turned to more biocompatible thiophene-2-carboximidamide (T2C) inhibitors as potential nNOS selective inhibitors. We have used crystallography and computational methods to better understand how and why two commercially developed T2C inhibitors exhibit selectivity for human nNOS over human eNOS. As with many of the aminopyridine inhibitors, a critical active site Asp residue in nNOS versus Asn in eNOS is largely responsible for controlling selectivity. We also present thermodynamic integration results to better understand the change in p Ka and thus the charge of inhibitors once bound to the active site. In addition, relative free energy calculations underscore the importance of enhanced electrostatic stabilization of inhibitors bound to the nNOS active site compared to eNOS.
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Affiliation(s)
- Huiying Li
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Ryan J. Evenson
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Georges Chreifi
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
- Current address: Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, United States
| | - Richard B. Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Thomas L. Poulos
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
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Darwish S, Sadeghiani N, Fong S, Mozaffari S, Hamidi P, Withana T, Yang S, Tiwari RK, Parang K. Synthesis and antiproliferative activities of doxorubicin thiol conjugates and doxorubicin-SS-cyclic peptide. Eur J Med Chem 2018; 161:594-606. [PMID: 30396106 DOI: 10.1016/j.ejmech.2018.10.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/14/2018] [Accepted: 10/16/2018] [Indexed: 02/06/2023]
Abstract
Myocardial toxicity and drug resistance caused by drug efflux are major limitations of doxorubicin (Dox)-based chemotherapy. Dox structure modification could be used to develop conjugates with an improved biological profile, such as antiproliferative activity and higher cellular retention. Thus, Dox thiol conjugates, Dox thiol (Dox-SH), thiol-reactive Dox-SS-pyridine (SS = disulfide), and a Dox-SS-cell-penetrating cyclic peptide, Dox-SS-[C(WR)4K], were synthesized. Dox was reacted with Traut's reagent to generate Dox-SH. The thiol group was activated by the reaction with dithiodipyridine to afford the corresponding Dox-SS-Pyridine (Dox-SS-Pyr). A cyclic cell-penetrating peptide containing a cysteine residue [C(WR)4K] was prepared using Fmoc solid-phase strategy. Dox-SS-Py was reacted with the free sulfhydryl of cysteine in [C(WR)4K] to generate Dox-SS-[C(WR)4K] as a Dox-cyclic peptide conjugate. Cytotoxicity of the compounds was examined in human embryonic kidney (HEK-293), human ovarian cancer (SKOV-3), human fibrosarcoma (HT-1080), and human leukemia (CCRF-CEM) cells. Dox-SH and Dox-SS-pyridine were found to have significantly higher or comparable cytotoxicity when compared to Dox in HEK-293, HT-1080, and CCRF-CEM cells after 24 h and 72 incubation, presumably because of higher activity and retention of the compounds in these cells. Furthermore, Dox-SS-[C(WR)4K] showed significantly higher cytotoxic activity in HEK-293, HT-1080, and SKOV-3 cells when compared with Dox after 72 h incubation. Dox-SS-Pyr exhibited higher cellular uptake than Dox-SS-[C(WR)4K] in HT-1080 and HEK-293 cells as shown by flow cytometry. Fluorescence microscopy exhibited that Dox-SS-Pyr, Dox-SH, and Dox-SS-[C(WR)4K] localized in the nucleus as shown in four cell lines, HT-1080, SKOV-3, MDA-MB-468, and MCF-7. Of note, Dox-SS-[C(WR)4K] was significantly less toxic in mouse myoblast cells compared to Dox at the same concentration. Further mechanistic study demonstrated that the level of intracellular reactive oxygen species (ROS) in myoblast cells exposed to Dox-SS-[C(WR)4K] was reduced in comparison of Dox when co-treated with FeCl2. These data indicate that Dox-SH, Dox-SS-Pyr, and Dox-SS-[C(WR)4K] have the potential to be further examined as Dox alternatives and anticancer agents.
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Affiliation(s)
- Shaban Darwish
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States; Organometallic and Organometalloid Chemistry Department, National Research Centre, El Bohouth st, Dokki, Giza, Egypt
| | - Neda Sadeghiani
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Shirley Fong
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Saghar Mozaffari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Parinaz Hamidi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Thimanthi Withana
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Sun Yang
- Department of Pharmacy Practice, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States
| | - Rakesh Kumar Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States.
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, United States.
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Slominski AT, Zmijewski MA, Plonka PM, Szaflarski JP, Paus R. How UV Light Touches the Brain and Endocrine System Through Skin, and Why. Endocrinology 2018; 159:1992-2007. [PMID: 29546369 PMCID: PMC5905393 DOI: 10.1210/en.2017-03230] [Citation(s) in RCA: 284] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/16/2018] [Indexed: 12/15/2022]
Abstract
The skin, a self-regulating protective barrier organ, is empowered with sensory and computing capabilities to counteract the environmental stressors to maintain and restore disrupted cutaneous homeostasis. These complex functions are coordinated by a cutaneous neuro-endocrine system that also communicates in a bidirectional fashion with the central nervous, endocrine, and immune systems, all acting in concert to control body homeostasis. Although UV energy has played an important role in the origin and evolution of life, UV absorption by the skin not only triggers mechanisms that defend skin integrity and regulate global homeostasis but also induces skin pathology (e.g., cancer, aging, autoimmune responses). These effects are secondary to the transduction of UV electromagnetic energy into chemical, hormonal, and neural signals, defined by the nature of the chromophores and tissue compartments receiving specific UV wavelength. UV radiation can upregulate local neuroendocrine axes, with UVB being markedly more efficient than UVA. The locally induced cytokines, corticotropin-releasing hormone, urocortins, proopiomelanocortin-peptides, enkephalins, or others can be released into circulation to exert systemic effects, including activation of the central hypothalamic-pituitary-adrenal axis, opioidogenic effects, and immunosuppression, independent of vitamin D synthesis. Similar effects are seen after exposure of the eyes and skin to UV, through which UVB activates hypothalamic paraventricular and arcuate nuclei and exerts very rapid stimulatory effects on the brain. Thus, UV touches the brain and central neuroendocrine system to reset body homeostasis. This invites multiple therapeutic applications of UV radiation, for example, in the management of autoimmune and mood disorders, addiction, and obesity.
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Affiliation(s)
- Andrzej T Slominski
- Department of Dermatology, Comprehensive Cancer Center Cancer Chemoprevention Program, University of Alabama at Birmingham, Birmingham, Alabama
- VA Medical Center, Birmingham, Alabama
- Correspondence: Andrzej T. Slominski, MD, PhD, Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama 35294. E-mail:
| | | | - Przemyslaw M Plonka
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Jerzy P Szaflarski
- Departments of Neurology and Neurobiology and the UAB Epilepsy Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ralf Paus
- Centre for Dermatology Research, University of Manchester, Manchester, United Kingdom
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida
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Ji X, Shen Z, Zhao B, Yuan X, Zhu X. CXCL14 and NOS1 expression in specimens from patients with stage I-IIIA nonsmall cell lung cancer after curative resection. Medicine (Baltimore) 2018; 97:e0101. [PMID: 29517684 PMCID: PMC5882435 DOI: 10.1097/md.0000000000010101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Many studies show that CXC chemokine ligand 14 (CXCL14) is highly expressed in tumor-associated stromal cells, promoting tumor cell growth, and invasion. Because of its unclear receptors, CXCL14-initiated intracellular signal cascades remain largely unknown. However, CXCL14 can regulate nitric oxide synthase 1 (NOS1) as its intracellular molecular target. In this paper, we investigated the expression of CXCL14 and NOS1 in specimens from patients with stage I-IIIA nonsmall cell lung cancer (NSCLC) after curative resection, and evaluated the prognostic significance of this gene expression in stromal fibroblasts and cancer cells.Immunohistochemistry was used to detect the expression of CXCL14 and NOS1 in 106 formalin fixed, paraffin-embedded specimens from patients with stage I-IIIA NSCLC. The chi-square test was performed to examine the correlation of CXCL14 and NOS1 expression level with clinicopathological features. The effects of the expression of CXCL14 or NOS1 on progression-free survival (PFS) and overall survival (OS) were determined by Kaplan-Meier and Cox hazard proportional model.The percentages of high CXCL14 expression in stromal fibroblasts and that in cancer cells were 46.2% (49/106) and 23.6% (25/106), respectively. The positive expression rates of NOS1 in cancer cells were 42.5% (45/106). The result indicated that there was a significant positive correlation between CXCL14 expression level in stromal fibroblasts and that in cancer cells (χ = 4.158, P = .041). In addition, the expression of CXCL14 in stromal fibroblasts was significantly correlated with NOS1 expression in cancer cells (χ = 16.156, P < .001). The 5-year PFS rates with low and high CXCL14 expression in stromal fibroblasts were 66.7% and 14.3% (χ = 44.008, P < .001), respectively, and the 5-year OS rates with those were 87.1% and 43.5% (χ = 21.531, P < .001), respectively. The 5-year PFS rates with negative and positive expression of NOS1 in cancer cells were 62.3% and 15.6% (χ = 33.756, P < .001), respectively, and the 5-year OS rates with those were 86.4% and 40.1% (χ = 24.430, P < 0.01), respectively.Both the high expression of CXCL14 in stromal fibroblasts and the positive expression of NOS1 in cancer cells are independent negative predictors of PFS and OS in patients with stage I-IIIA NSCLC after curative resection.
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30
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Altinoz MA, Elmaci İ. Targeting nitric oxide and NMDA receptor-associated pathways in treatment of high grade glial tumors. Hypotheses for nitro-memantine and nitrones. Nitric Oxide 2017; 79:68-83. [PMID: 29030124 DOI: 10.1016/j.niox.2017.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 09/26/2017] [Accepted: 10/07/2017] [Indexed: 12/31/2022]
Abstract
Glioblastoma multiforme (GBM) is a devastating brain cancer with no curative treatment. Targeting Nitric Oxide (NO) and glutamatergic pathways may help as adjunctive treatments in GBM. NO at low doses promotes tumorigenesis, while at higher levels (above 300 nM) triggers apoptosis. Gliomas actively secrete high amounts of glutamate which activates EGR signaling and mediates degradation of peritumoral tissues via excitotoxic injury. Memantine inhibits NMDA-subtype of glutamate receptors (NMDARs) and induces autophagic death of glioma cells in vitro and blocks glioma growth in vivo. Nitro-memantines may exert further benefits by limiting NMDAR signaling and by delivery of NO to the areas of excessive NMDAR activity leading NO-accumulation at tumoricidal levels within gliomas. Due to the duality of NO in tumorigenesis, agents which attenuate NO levels may also act beneficial in treatment of GBM. Nitrone compounds including N-tert-Butyl-α-phenylnitrone (PBN) and its disulfonyl-phenyl derivative, OKN-007 suppress free radical formation in experimental cerebral ischemia. OKN-007 failed to show clinical efficacy in stroke, but trials demonstrated its high biosafety in humans including elderly subjects. PBN inhibits the signaling pathways of NF-κB, inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX). In animal models of liver cancer and glioblastoma, OKN-007 seemed more efficient than PBN in suppression of cell proliferation, microvascular density and in induction of apoptosis. OKN-007 also inhibits SULF2 enzyme, which promotes tumor growth via versatile pathways. We assume that nitromemantines may be more beneficial concomitant with chemo-radiotherapy while nitrones alone may act useful in suppressing basal tumor growth and angiogenesis.
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Affiliation(s)
- Meric A Altinoz
- Neuroacademy Group, Department of Neurosurgery, Memorial Hospital, Istanbul, Turkey.
| | - İlhan Elmaci
- Neuroacademy Group, Department of Neurosurgery, Memorial Hospital, Istanbul, Turkey
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31
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Yarlagadda K, Hassani J, Foote IP, Markowitz J. The role of nitric oxide in melanoma. Biochim Biophys Acta Rev Cancer 2017; 1868:500-509. [PMID: 28963068 DOI: 10.1016/j.bbcan.2017.09.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 09/24/2017] [Accepted: 09/25/2017] [Indexed: 12/16/2022]
Abstract
Nitric oxide (NO) is a small gaseous signaling molecule that mediates its effects in melanoma through free radical formation and enzymatic processes. Investigations have demonstrated multiple roles for NO in melanoma pathology via immune surveillance, apoptosis, angiogenesis, melanogenesis, and on the melanoma cell itself. In general, elevated levels of NO prognosticate a poor outcome for melanoma patients. However, there are processes where the relative concentration of NO in different environments may also serve to limit melanoma proliferation. This review serves to outline the roles of NO in melanoma development and proliferation. As demonstrated by multiple in vivo murine models and observations from human tissue, NO may promote melanoma formation and proliferation through its interaction via inhibitory immune cells, inhibition of apoptosis, stimulation of pro-tumorigenic cytokines, activation of tumor associated macrophages, alteration of angiogenic processes, and stimulation of melanoma formation itself.
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Affiliation(s)
- Keerthi Yarlagadda
- Department of Cutaneous Oncology, Moffitt Cancer Center Tampa, FL 33612, United States
| | - John Hassani
- Department of Cutaneous Oncology, Moffitt Cancer Center Tampa, FL 33612, United States
| | - Isaac P Foote
- Department of Cutaneous Oncology, Moffitt Cancer Center Tampa, FL 33612, United States
| | - Joseph Markowitz
- Department of Cutaneous Oncology, Moffitt Cancer Center Tampa, FL 33612, United States.
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32
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The "Sticky Patch" Model of Crystallization and Modification of Proteins for Enhanced Crystallizability. Methods Mol Biol 2017; 1607:77-115. [PMID: 28573570 DOI: 10.1007/978-1-4939-7000-1_4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Crystallization of macromolecules has long been perceived as a stochastic process, which cannot be predicted or controlled. This is consistent with another popular notion that the interactions of molecules within the crystal, i.e., crystal contacts, are essentially random and devoid of specific physicochemical features. In contrast, functionally relevant surfaces, such as oligomerization interfaces and specific protein-protein interaction sites, are under evolutionary pressures so their amino acid composition, structure, and topology are distinct. However, current theoretical and experimental studies are significantly changing our understanding of the nature of crystallization. The increasingly popular "sticky patch" model, derived from soft matter physics, describes crystallization as a process driven by interactions between select, specific surface patches, with properties thermodynamically favorable for cohesive interactions. Independent support for this model comes from various sources including structural studies and bioinformatics. Proteins that are recalcitrant to crystallization can be modified for enhanced crystallizability through chemical or mutational modification of their surface to effectively engineer "sticky patches" which would drive crystallization. Here, we discuss the current state of knowledge of the relationship between the microscopic properties of the target macromolecule and its crystallizability, focusing on the "sticky patch" model. We discuss state-of-the-art in silico methods that evaluate the propensity of a given target protein to form crystals based on these relationships, with the objective to design variants with modified molecular surface properties and enhanced crystallization propensity. We illustrate this discussion with specific cases where these approaches allowed to generate crystals suitable for structural analysis.
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33
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Ghimire K, Altmann HM, Straub AC, Isenberg JS. Nitric oxide: what's new to NO? Am J Physiol Cell Physiol 2016; 312:C254-C262. [PMID: 27974299 PMCID: PMC5401944 DOI: 10.1152/ajpcell.00315.2016] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/12/2016] [Accepted: 12/12/2016] [Indexed: 01/22/2023]
Abstract
Nitric oxide (NO) is one of the critical components of the vasculature, regulating key signaling pathways in health. In macrovessels, NO functions to suppress cell inflammation as well as adhesion. In this way, it inhibits thrombosis and promotes blood flow. It also functions to limit vessel constriction and vessel wall remodeling. In microvessels and particularly capillaries, NO, along with growth factors, is important in promoting new vessel formation, a process termed angiogenesis. With age and cardiovascular disease, animal and human studies confirm that NO is dysregulated at multiple levels including decreased production, decreased tissue half-life, and decreased potency. NO has also been implicated in diseases that are related to neurotransmission and cancer although it is likely that these processes involve NO at higher concentrations and from nonvascular cell sources. Conversely, NO and drugs that directly or indirectly increase NO signaling have found clinical applications in both age-related diseases and in younger individuals. This focused review considers recently reported advances being made in the field of NO signaling regulation at several levels including enzymatic production, receptor function, interacting partners, localization of signaling, matrix-cellular and cell-to-cell cross talk, as well as the possible impact these newly described mechanisms have on health and disease.
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Affiliation(s)
- Kedar Ghimire
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Helene M Altmann
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Adam C Straub
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania.,Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; and
| | - Jeffrey S Isenberg
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania; .,Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; and.,Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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34
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Poulos TL, Li H. Nitric oxide synthase and structure-based inhibitor design. Nitric Oxide 2016; 63:68-77. [PMID: 27890696 DOI: 10.1016/j.niox.2016.11.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 11/09/2016] [Accepted: 11/21/2016] [Indexed: 11/24/2022]
Abstract
Once it was discovered that the enzyme nitric oxide synthase (NOS) is responsible for the biosynthesis of NO, NOS became a drug target. Particularly important is the over production of NO by neuronal NOS (nNOS) in various neurodegenerative disorders. After the various NOS isoforms were identified, inhibitor development proceeded rapidly. It soon became evident, however, that isoform selectivity presents a major challenge. All 3 human NOS isoforms, nNOS, eNOS (endothelial NOS), and iNOS (inducible NOS) have nearly identical active site structures thus making selective inhibitor design especially difficult. Of particular importance is the avoidance of inhibiting eNOS owing to its vital role in the cardiovascular system. This review summarizes some of the history of NOS inhibitor development and more recent advances in developing isoform selective inhibitors using primarily structure-based approaches.
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Affiliation(s)
- Thomas L Poulos
- Departments of Molecular Biology & Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, Irvine, CA 92697-3900, USA.
| | - Huiying Li
- Departments of Molecular Biology & Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, Irvine, CA 92697-3900, USA
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35
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Montalvo-Javé EE, Olguín-Martínez M, Hernández-Espinosa DR, Sánchez-Sevilla L, Mendieta-Condado E, Contreras-Zentella ML, Oñate-Ocaña LF, Escalante-Tatersfield T, Echegaray-Donde A, Ruiz-Molina JM, Herrera MF, Morán J, Hernández-Muñoz R. Role of NADPH oxidases in inducing a selective increase of oxidant stress and cyclin D1 and checkpoint 1 over-expression during progression to human gastric adenocarcinoma. Eur J Cancer 2016; 57:50-7. [DOI: 10.1016/j.ejca.2015.11.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/12/2015] [Accepted: 11/17/2015] [Indexed: 12/14/2022]
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36
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Liu-Smith F, Meyskens FL. Molecular mechanisms of flavonoids in melanin synthesis and the potential for the prevention and treatment of melanoma. Mol Nutr Food Res 2016; 60:1264-74. [PMID: 26865001 DOI: 10.1002/mnfr.201500822] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 01/05/2023]
Abstract
Flavonoids are becoming popular nutraceuticals. Different flavonoids show similar or distinct biological effects on different tissues or cell types, which may limit or define their usefulness in cancer prevention and/or treatment application. This review focuses on a few selected flavonoids and discusses their functions in normal and transformed pigment cells, including cyanidin, apigenin, genistein, fisetin, EGCG, luteolin, baicalein, quercetin and kaempferol. Flavonoids exhibit melanogenic or anti-melanogenic effects mainly via transcriptional factor MiTF and/or the melanogenesis enzymes tyrosinase, DCT or TYRP-1. To identify a direct target has been a challenge as most studies were not able to discriminate whether the effect(s) of the flavonoid were from direct targeting or represented indirect effects. Flavonoids exhibit an anti-melanoma effect via inhibiting cell proliferation and invasion and inducing apoptosis. The mechanisms are also multi-fold, via ROS-scavenging, immune-modulation, cell cycle regulation and epigenetic modification including DNA methylation and histone deacetylation. In summary, although many flavonoid compounds are extremely promising nutraceuticals, their detailed molecular mechanism and their multi-target (simultaneously targeting multiple molecules) nature warrant further investigation before advancement to translational studies or clinical trials.
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Affiliation(s)
- Feng Liu-Smith
- Department of Epidemiology, UC Irvine, Irvine, CA, USA.,Department of Medicine, UC Irvine, Irvine, CA, USA.,Department of Public Health, UC Irvine, Irvine, CA, USA
| | - Frank L Meyskens
- Department of Epidemiology, UC Irvine, Irvine, CA, USA.,Department of Medicine, UC Irvine, Irvine, CA, USA.,Department of Public Health, UC Irvine, Irvine, CA, USA.,Department of Biological Chemistry, UC Irvine, Irvine, CA, USA.,Chao Family Comprehensive Cancer Center, UC Irvine, Irvine, CA, USA
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37
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Abstract
The three endogenous gaseous transmitters - nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) - regulate a number of key biological functions. Emerging data have revealed several new mechanisms for each of these three gasotransmitters in tumour biology. It is now appreciated that they show bimodal pharmacological character in cancer, in that not only the inhibition of their biosynthesis but also elevation of their concentration beyond a certain threshold can exert anticancer effects. This Review discusses the role of each gasotransmitter in cancer and the effects of pharmacological agents - some of which are in early-stage clinical studies - that modulate the levels of each gasotransmitter. A clearer understanding of the pharmacological character of these three gases and the mechanisms underlying their biological effects is expected to guide further clinical translation.
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38
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Holden JK, Dejam D, Lewis MC, Huang H, Kang S, Jing Q, Xue F, Silverman RB, Poulos TL. Inhibitor Bound Crystal Structures of Bacterial Nitric Oxide Synthase. Biochemistry 2015; 54:4075-82. [PMID: 26062720 DOI: 10.1021/acs.biochem.5b00431] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitric oxide generated by bacterial nitric oxide synthase (NOS) increases the susceptibility of Gram-positive pathogens Staphylococcus aureus and Bacillus anthracis to oxidative stress, including antibiotic-induced oxidative stress. Not surprisingly, NOS inhibitors also improve the effectiveness of antimicrobials. Development of potent and selective bacterial NOS inhibitors is complicated by the high active site sequence and structural conservation shared with the mammalian NOS isoforms. To exploit bacterial NOS for the development of new therapeutics, recognition of alternative NOS surfaces and pharmacophores suitable for drug binding is required. Here, we report on a wide number of inhibitor-bound bacterial NOS crystal structures to identify several compounds that interact with surfaces unique to the bacterial NOS. Although binding studies indicate that these inhibitors weakly interact with the NOS active site, many of the inhibitors reported here provide a revised structural framework for the development of new antimicrobials that target bacterial NOS. In addition, mutagenesis studies reveal several key residues that unlock access to bacterial NOS surfaces that could provide the selectivity required to develop potent bacterial NOS inhibitors.
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Affiliation(s)
- Jeffrey K Holden
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Dillon Dejam
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Matthew C Lewis
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - He Huang
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Soosung Kang
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Qing Jing
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Fengtian Xue
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Richard B Silverman
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Thomas L Poulos
- Departments of †Molecular Biology and Biochemistry, ‡Pharmaceutical Sciences, and §Chemistry, University of California, Irvine, California 92697-3900, United States.,∥Departments of Chemistry and Molecular Biosciences, ⊥Chemistry of Life Processes Institute, #Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
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39
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Cellular Mechanisms of Oxidative Stress and Action in Melanoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:481782. [PMID: 26064422 PMCID: PMC4438193 DOI: 10.1155/2015/481782] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/21/2015] [Indexed: 12/14/2022]
Abstract
Most melanomas occur on the skin, but a small percentage of these life-threatening cancers affect other parts of the body, such as the eye and mucous membranes, including the mouth. Given that most melanomas are caused by ultraviolet radiation (UV) exposure, close attention has been paid to the impact of oxidative stress on these tumors. The possibility that key epigenetic enzymes cannot act on a DNA altered by oxidative stress has opened new perspectives. Therefore, much attention has been paid to the alteration of DNA methylation by oxidative stress. We review the current evidence about (i) the role of oxidative stress in melanoma initiation and progression; (ii) the mechanisms by which ROS influence the DNA methylation pattern of transformed melanocytes; (iii) the transformative potential of oxidative stress-induced changes in global and/or local gene methylation and expression; (iv) the employment of this epimutation as a biomarker for melanoma diagnosis, prognosis, and drug resistance evaluation; (v) the impact of this new knowledge in clinical practice for melanoma treatment.
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40
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Liu-Smith F, Poe C, Farmer PJ, Meyskens FL. Amyloids, melanins and oxidative stress in melanomagenesis. Exp Dermatol 2014; 24:171-4. [PMID: 25271672 DOI: 10.1111/exd.12559] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2014] [Indexed: 12/26/2022]
Abstract
Melanoma has traditionally been viewed as an ultraviolet (UV) radiation-induced malignancy. While UV is a common inducing factor, other endogenous stresses such as metal ion accumulation or the melanin pigment itself may provide alternative pathways to melanoma progression. Eumelanosomes within melanoma often exhibit disrupted membranes and fragmented pigment which may be due to alterations in their amyloid-based striated matrix. The melanosomal amyloid can itself be toxic, especially in combination with reactive oxygen species (ROS) and reactive nitrogen species (RNS) generated by endogenous NADPH oxidase (NOX) and nitric oxide synthase (NOS) enzymes, a toxic mix that may initiate melanomagenesis. Further understanding of the loss of the melanosomal organization, the behaviour of the exposed melanin and the induction of ROS/RNS in melanomas may provide critical insights into this deadly disease.
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Affiliation(s)
- Feng Liu-Smith
- Department of Epidemiology, University of California School of Medicine, Irvine, CA, USA; Department of Medicine, University of California School of Medicine, Irvine, CA, USA; Chao Family Comprehensive Cancer Center, University of California School of Medicine, Irvine, CA, USA
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41
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Kang S, Tang W, Li H, Chreifi G, Martásek P, Roman LJ, Poulos TL, Silverman RB. Nitric oxide synthase inhibitors that interact with both heme propionate and tetrahydrobiopterin show high isoform selectivity. J Med Chem 2014; 57:4382-96. [PMID: 24758147 PMCID: PMC4032192 DOI: 10.1021/jm5004182] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Indexed: 01/05/2023]
Abstract
Overproduction of NO by nNOS is implicated in the pathogenesis of diverse neuronal disorders. Since NO signaling is involved in diverse physiological functions, selective inhibition of nNOS over other isoforms is essential to minimize side effects. A series of α-amino functionalized aminopyridine derivatives (3-8) were designed to probe the structure-activity relationship between ligand, heme propionate, and H4B. Compound 8R was identified as the most potent and selective molecule of this study, exhibiting a Ki of 24 nM for nNOS, with 273-fold and 2822-fold selectivity against iNOS and eNOS, respectively. Although crystal structures of 8R complexed with nNOS and eNOS revealed a similar binding mode, the selectivity stems from the distinct electrostatic environments in two isoforms that result in much lower inhibitor binding free energy in nNOS than in eNOS. These findings provide a basis for further development of simple, but even more selective and potent, nNOS inhibitors.
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Affiliation(s)
- Soosung Kang
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Wei Tang
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Huiying Li
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Georges Chreifi
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Pavel Martásek
- Department
of Biochemistry, University of Texas Health
Science Center, San Antonio, Texas 78384-7760, United States
| | - Linda J. Roman
- Department
of Biochemistry, University of Texas Health
Science Center, San Antonio, Texas 78384-7760, United States
| | - Thomas L. Poulos
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Richard B. Silverman
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
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42
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Liu-Smith F, Dellinger R, Meyskens FL. Updates of reactive oxygen species in melanoma etiology and progression. Arch Biochem Biophys 2014; 563:51-5. [PMID: 24780245 DOI: 10.1016/j.abb.2014.04.007] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/14/2014] [Accepted: 04/17/2014] [Indexed: 01/01/2023]
Abstract
Reactive oxygen species (ROS) play crucial roles in all aspects of melanoma development, however, the source of ROS is not well defined. In this review we summarize recent advancement in this rapidly developing field. The cellular ROS pool in melanocytes can be derived from mitochondria, melanosomes, NADPH oxidase (NOX) family enzymes, and uncoupling of nitric oxide synthase (NOS). Current evidence suggests that Nox1, Nox4 and Nox5 are expressed in melanocytic lineage. While there is no difference in Nox1 expression levels in primary and metastatic melanoma tissues, Nox4 expression is significantly higher in a subset of metastatic melanoma tumors as compared to the primary tumors; suggesting distinct and specific signals and effects for NOX family enzymes in melanoma. Targeting these NOX enzymes using specific NOX inhibitors may be effective for a subset of certain tumors. ROS also play important roles in BRAF inhibitor induced drug resistance; hence identification and blockade of the source of this ROS may be an effective way to enhance efficacy and overcome resistance. Furthermore, ROS from different sources may interact with each other and interact with reactive nitrogen species (RNS) and drive the melanomagenesis process at all stages of disease. Further understanding ROS and RNS in melanoma etiology and progression is necessary for developing new prevention and therapeutic approaches.
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Affiliation(s)
- Feng Liu-Smith
- Department of Epidemiology, University of California School of Medicine, Irvine, CA 92697, United States; Department of Medicine, University of California School of Medicine, Irvine, CA 92697, United States; Chao Family Comprehensive Cancer Center, University of California School of Medicine, Irvine, CA 92697, United States.
| | - Ryan Dellinger
- Department of Medicine, University of California School of Medicine, Irvine, CA 92697, United States; Chao Family Comprehensive Cancer Center, University of California School of Medicine, Irvine, CA 92697, United States
| | - Frank L Meyskens
- Department of Epidemiology, University of California School of Medicine, Irvine, CA 92697, United States; Department of Medicine, University of California School of Medicine, Irvine, CA 92697, United States; Department of Biological Chemistry, University of California School of Medicine, Irvine, CA 92697, United States; Department of Public Health, University of California School of Medicine, Irvine, CA 92697, United States; Chao Family Comprehensive Cancer Center, University of California School of Medicine, Irvine, CA 92697, United States
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43
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Wang Y, Hu S, Gabisi AM, Er JAV, Pope A, Burstein G, Schardon CL, Cardounel AJ, Ekmekcioglu S, Fast W. Developing an irreversible inhibitor of human DDAH-1, an enzyme upregulated in melanoma. ChemMedChem 2014; 9:792-7. [PMID: 24574257 PMCID: PMC4311893 DOI: 10.1002/cmdc.201300557] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Indexed: 01/14/2023]
Abstract
Inhibitors of the human enzyme dimethylarginine dimethylaminohydrolase-1 (DDAH-1) can raise endogenous levels of asymmetric dimethylarginine (ADMA) and lead to a subsequent inhibition of nitric oxide synthesis. In this study, N(5) -(1-imino-2-chloroethyl)-L-ornithine (Cl-NIO) is shown to be a potent time- and concentration-dependent inhibitor of purified human DDAH-1 (KI =1.3±0.6 μM; kinact =0.34±0.07 min(-1) ), with >500-fold selectivity against two arginine-handling enzymes in the same pathway. An activity probe is used to measure the "in cell" IC50 value (6.6±0.2 μM) for Cl-NIO inhibition of DDAH-1 artificially expressed within cultured HEK293T cells. A screen of diverse melanoma cell lines reveals that a striking 50/64 (78 %) of melanoma lines tested showed increased levels of DDAH-1 relative to normal melanocyte control lines. Treatment of the melanoma A375 cell line with Cl-NIO shows a subsequent decrease in cellular nitric oxide production. Cl-NIO is a promising tool for the study of methylarginine-mediated nitric oxide control and a potential therapeutic lead compound for other indications with elevated nitric oxide production, such as septic shock and idiopathic pulmonary fibrosis.
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Affiliation(s)
- Yun Wang
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Shougang Hu
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Abdul M. Gabisi
- Department of Melanoma Medical Oncology, M.D. Anderson Cancer Center, Houston, TX, 77030
| | - Joyce A. V. Er
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Arthur Pope
- Departments of Internal Medicine and Pharmacology, Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Gayle Burstein
- Department of Biochemistry, College of Natural Sciences, University of Texas at Austin, 1 University Station, Austin TX, 78712, USA
| | - Christopher L. Schardon
- Department of Biochemistry, College of Natural Sciences, University of Texas at Austin, 1 University Station, Austin TX, 78712, USA
| | - Arturo J. Cardounel
- Departments of Internal Medicine and Pharmacology, Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Suhendan Ekmekcioglu
- Department of Melanoma Medical Oncology, M.D. Anderson Cancer Center, Houston, TX, 77030
| | - Walter Fast
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
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β3-adrenergic receptor activity modulates melanoma cell proliferation and survival through nitric oxide signaling. Naunyn Schmiedebergs Arch Pharmacol 2014; 387:533-43. [PMID: 24599317 DOI: 10.1007/s00210-014-0969-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 02/21/2014] [Indexed: 01/07/2023]
Abstract
We have recently shown in B16F10 melanoma cells that blockade of β3-adrenergic receptors (β3-ARs) reduces cell proliferation and induces apoptosis, likely through the involvement of nitric oxide (NO) signaling. Here, we tested the hypothesis that the effects of β3-AR blockade on melanoma cells are mainly mediated by a decrease in the activity of the NO pathway, possibly due to reduced expression of inducible NO synthase (iNOS). B16F10 cells were used. Nitrite production, iNOS expression, cell proliferation, and apoptosis were evaluated. β3-AR blockade with L-748,337 reduced basal nitrite production, while β3-AR stimulation with BRL37344 increased it. The effects of β3-AR blockade were prevented by NOS activation, while the effects of β3-AR activation were prevented by NOS inhibition. Treatments increasing nitrite production also increased iNOS expression, while treatments decreasing nitrite production reduced iNOS expression. Among the different NOS isoforms, experiments using L-748,337 or BRL37344 with activators or inhibitors targeting specific NOS isoforms demonstrated a prominent role of iNOS in nitrite production. β3-AR blockade decreased cell proliferation and induced apoptosis, while β3-AR activation had the opposite effects. The effects of β3-AR blockade/activation were prevented by iNOS activation/inhibition, respectively. Taken together, these results demonstrate that iNOS-produced NO is a downstream effector of β3-ARs and that the beneficial effects of β3-AR blockade on melanoma B16F10 cell proliferation and apoptosis are functionally linked to reduced iNOS expression and NO production. Although it is difficult to extrapolate these data to the clinical setting, the targeted inhibition of the β3-AR-NO axis may offer a new therapeutic perspective to treat melanomas.
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Denat L, Kadekaro AL, Marrot L, Leachman SA, Abdel-Malek ZA. Melanocytes as instigators and victims of oxidative stress. J Invest Dermatol 2014; 134:1512-1518. [PMID: 24573173 PMCID: PMC4418514 DOI: 10.1038/jid.2014.65] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/08/2014] [Accepted: 01/15/2014] [Indexed: 12/30/2022]
Abstract
Epidermal melanocytes are particularly vulnerable to oxidative stress owing to the pro-oxidant state generated during melanin synthesis, and to the intrinsic antioxidant defenses that are compromised in pathologic conditions. Melanoma is thought to be oxidative stress driven, and melanocyte death in vitiligo is thought to be instigated by a highly pro-oxidant state in the epidermis. We review the current knowledge about melanin and the redox state of melanocytes, how paracrine factors help counteract oxidative stress, the role of oxidative stress in melanoma initiation and progression and in melanocyte death in vitiligo, and how this knowledge can be harnessed for melanoma and vitiligo treatment.
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Affiliation(s)
- Laurence Denat
- L'OREAL Research and Innovation, Aulnay-sous-Bois, France
| | - Ana L Kadekaro
- Department of Dermatology, University of Cincinnati, Cincinnati, Ohio, USA
| | - Laurent Marrot
- L'OREAL Research and Innovation, Aulnay-sous-Bois, France
| | - Sancy A Leachman
- Department of Dermatology, Oregon Health Sciences University, Portland, Oregon, USA
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46
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Huang H, Li H, Yang S, Chreifi G, Martásek P, Roman L, Meyskens FL, Poulos TL, Silverman RB. Potent and selective double-headed thiophene-2-carboximidamide inhibitors of neuronal nitric oxide synthase for the treatment of melanoma. J Med Chem 2014; 57:686-700. [PMID: 24447275 PMCID: PMC3983353 DOI: 10.1021/jm401252e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Indexed: 01/10/2023]
Abstract
Selective inhibitors of neuronal nitric oxide synthase (nNOS) are regarded as valuable and powerful agents with therapeutic potential for the treatment of chronic neurodegenerative pathologies and human melanoma. Here, we describe a novel hybrid strategy that combines the pharmacokinetically promising thiophene-2-carboximidamide fragment and structural features of our previously reported potent and selective aminopyridine inhibitors. Two inhibitors, 13 and 14, show low nanomolar inhibitory potency (Ki = 5 nM for nNOS) and good isoform selectivities (nNOS over eNOS [440- and 540-fold, respectively] and over iNOS [260- and 340-fold, respectively]). The crystal structures of these nNOS-inhibitor complexes reveal a new hot spot that explains the selectivity of 14 and why converting the secondary to tertiary amine leads to enhanced selectivity. More importantly, these compounds are the first highly potent and selective nNOS inhibitory agents that exhibit excellent in vitro efficacy in melanoma cell lines.
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Affiliation(s)
- He Huang
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Huiying Li
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Sun Yang
- Chao
Family Comprehensive Cancer Center, University
of California, Irvine, California 92697-3900, United States
| | - Georges Chreifi
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Pavel Martásek
- Department
of Biochemistry, University of Texas Health
Science Center, San Antonio, Texas 78384-7760, United States
- Department
of Pediatrics and Center for Applied Genomics, First School of Medicine, Charles University, Prague, Czech Republic
| | - Linda
J. Roman
- Department
of Biochemistry, University of Texas Health
Science Center, San Antonio, Texas 78384-7760, United States
| | - Frank L. Meyskens
- Chao
Family Comprehensive Cancer Center, University
of California, Irvine, California 92697-3900, United States
| | - Thomas L. Poulos
- Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Richard B. Silverman
- Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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