1
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Suppression of the Antioxidant System and PI3K/Akt/mTOR Signaling Pathway in Cisplatin-Resistant Cancer Cells by Quercetin. Bull Exp Biol Med 2022; 173:760-764. [DOI: 10.1007/s10517-022-05626-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Indexed: 11/07/2022]
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2
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Kalinina EV, Hasan AAS, Tatarskiy VV, Volodina YL, Petrova АS, Novichkova MD, Zhdanov DD, Nurmuradov NK, Chernov NN, Shtil AA. Suppression of PI3K/Akt/mTOR Signaling Pathway and Antioxidant System and Reversal of Cancer Cells Resistance to Cisplatin under the Effect of Curcumin. Bull Exp Biol Med 2022; 173:371-375. [DOI: 10.1007/s10517-022-05551-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Indexed: 10/17/2022]
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3
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Tawfik HO, El-Hamaky AA, El-Bastawissy EA, Shcherbakov KA, Veselovsky AV, Gladilina YA, Zhdanov DD, El-Hamamsy MH. New Genetic Bomb Trigger: Design, Synthesis, Molecular Dynamics Simulation, and Biological Evaluation of Novel BIBR1532-Related Analogs Targeting Telomerase against Non-Small Cell Lung Cancer. Pharmaceuticals (Basel) 2022; 15:ph15040481. [PMID: 35455478 PMCID: PMC9025901 DOI: 10.3390/ph15040481] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 02/06/2023] Open
Abstract
Telomeres serve a critical function in cell replication and proliferation at every stage of the cell cycle. Telomerase is a ribonucleoprotein, responsible for maintaining the telomere length and chromosomal integrity of frequently dividing cells. Although it is silenced in most human somatic cells, telomere restoration occurs in cancer cells because of telomerase activation or alternative telomere lengthening. The telomerase enzyme is a universal anticancer target that is expressed in 85–95% of cancers. BIBR1532 is a selective non-nucleoside potent telomerase inhibitor that acts by direct noncompetitive inhibition. Relying on its structural features, three different series were designed, and 30 novel compounds were synthesized and biologically evaluated as telomerase inhibitors using a telomeric repeat amplification protocol (TRAP) assay. Target compounds 29a, 36b, and 39b reported the greatest inhibitory effect on telomerase enzyme with IC50 values of 1.7, 0.3, and 2.0 μM, respectively, while BIBR1532 displayed IC50 = 0.2 μM. Compounds 29a, 36b, and 39b were subsequently tested using a living-cell TRAP assay and were able to penetrate the cell membrane and inhibit telomerase inside living cancer cells. Compound 36b was tested for cytotoxicity against 60 cancer cell lines using the NCI (USA) procedure, and the % growth was minimally impacted, indicating telomerase enzyme selectivity. To investigate the interaction of compound 36b with the telomerase allosteric binding site, molecular docking and molecular dynamics simulations were used.
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Affiliation(s)
- Haytham O. Tawfik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt; (A.A.E.-H.); (E.A.E.-B.); (M.H.E.-H.)
- Correspondence: (H.O.T.); (D.D.Z.)
| | - Anwar A. El-Hamaky
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt; (A.A.E.-H.); (E.A.E.-B.); (M.H.E.-H.)
| | - Eman A. El-Bastawissy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt; (A.A.E.-H.); (E.A.E.-B.); (M.H.E.-H.)
| | - Kirill A. Shcherbakov
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (K.A.S.); (A.V.V.); (Y.A.G.)
| | - Alexander V. Veselovsky
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (K.A.S.); (A.V.V.); (Y.A.G.)
| | - Yulia A. Gladilina
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (K.A.S.); (A.V.V.); (Y.A.G.)
| | - Dmitry D. Zhdanov
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (K.A.S.); (A.V.V.); (Y.A.G.)
- Department of Biochemistry, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St. 6, 117198 Moscow, Russia
- Correspondence: (H.O.T.); (D.D.Z.)
| | - Mervat H. El-Hamamsy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt; (A.A.E.-H.); (E.A.E.-B.); (M.H.E.-H.)
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4
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Cytoprotective Activity of Polyamines Is Associated with the Alternative Splicing of RAD51A Pre-mRNA in Normal Human CD4 + T Lymphocytes. Int J Mol Sci 2022; 23:ijms23031863. [PMID: 35163785 PMCID: PMC8837172 DOI: 10.3390/ijms23031863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 02/04/2023] Open
Abstract
Physiological polyamines are ubiquitous polycations with pleiotropic biochemical activities, including regulation of gene expression and cell proliferation as well as modulation of cell signaling. They can also decrease DNA damage and promote cell survival. In the present study, we demonstrated that polyamines have cytoprotective effects on normal human CD4+ T lymphocytes but not on cancer Jurkat or K562 cells. Pretreatment of lymphocytes with polyamines resulted in a significant reduction in cells with DNA damage induced by doxorubicin, cisplatin, or irinotecan, leading to an increase in cell survival and viability. The induction of RAD51A expression was in response to DNA damage in both cancer and normal cells. However, in normal cells, putrescin pretreatment resulted in alternative splicing of RAD51A and the switch of the predominant expression from the splice variant with the deletion of exon 4 to the full-length variant. Induction of RAD51A alternative splicing by splice-switching oligonucleotides resulted in a decrease in DNA damage and cell protection against cisplatin-induced apoptosis. The results of this study suggest that the cytoprotective activity of polyamines is associated with the alternative splicing of RAD51A pre-mRNA in normal human CD4+ T lymphocytes. The difference in the sensitivity of normal and cancer cells to polyamines may become the basis for the use of these compounds to protect normal lymphocytes during lymphoblastic chemotherapy.
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5
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Torres-Montaner A. The telomere complex and the origin of the cancer stem cell. Biomark Res 2021; 9:81. [PMID: 34736527 PMCID: PMC8567692 DOI: 10.1186/s40364-021-00339-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/21/2021] [Indexed: 11/15/2022] Open
Abstract
Exquisite regulation of telomere length is essential for the preservation of the lifetime function and self-renewal of stem cells. However, multiple oncogenic pathways converge on induction of telomere attrition or telomerase overexpression and these events can by themselves trigger malignant transformation. Activation of NFκB, the outcome of telomere complex damage, is present in leukemia stem cells but absent in normal stem cells and can activate DOT1L which has been linked to MLL-fusion leukemias. Tumors that arise from cells of early and late developmental stages appear to follow two different oncogenic routes in which the role of telomere and telomerase signaling might be differentially involved. In contrast, direct malignant transformation of stem cells appears to be extremely rare. This suggests an inherent resistance of stem cells to cancer transformation which could be linked to a stem cell’specific mechanism of telomere maintenance. However, tumor protection of normal stem cells could also be conferred by cell extrinsic mechanisms.
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Affiliation(s)
- A Torres-Montaner
- Department of Pathology, Queen's Hospital, Rom Valley Way, London, Romford, RM7 OAG, UK. .,Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain.
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6
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Plyasova AA, Berrino E, Khan II, Veselovsky AV, Pokrovsky VS, Angeli A, Ferraroni M, Supuran CT, Pokrovskaya MV, Alexandrova SS, Gladilina YA, Sokolov NN, Hilal A, Carta F, Zhdanov DD. Mechanisms of the Antiproliferative and Antitumor Activity of Novel Telomerase-Carbonic Anhydrase Dual-Hybrid Inhibitors. J Med Chem 2021; 64:11432-11444. [PMID: 34283610 DOI: 10.1021/acs.jmedchem.1c00756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Human (h) telomerase (TL; EC 2.7.7.49) plays a key role in sustaining cancer cells by means of elongating telomeric repeats at the 3' ends of chromosomes. Since TL-inhibitor (TI) stand-alone cancer therapy has been proven to be remarkably challenging, a polypharmacological approach represents a valid alternative. Here we consider a series of compounds able to inhibit both hTL and the tumor-associated carbonic anhydrases (CAs; EC 4.2.1.1) IX and XII. Compounds 7 and 9 suppressed hTL activity in both cell lysates and human colon cancer cell lines, and prolonged incubation with either 7 or 9 resulted in telomere shortening, cell cycle arrest, replicative senescence, and apoptosis. Enzyme kinetics showed that 7 and 9 are mixed-type inhibitors of the binding of DNA primers and deoxynucleoside triphosphate (dNTP) to the TL catalytic subunit hTERT, which is in agreement with docking experiments. Compound 9 showed antitumor activity in Colo-205 mouse xenografts and suppressed telomerase activity by telomere reduction.
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Affiliation(s)
- Anna A Plyasova
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
| | - Emanuela Berrino
- Dipartimento di Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Florence, Italy
| | - Irina I Khan
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya Street 6, Moscow 117198, Russia.,N.N. Blokhin Cancer Research Center, Kashirskoe Shosse 24, Moscow 115478, Russia
| | | | - Vadim S Pokrovsky
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya Street 6, Moscow 117198, Russia.,N.N. Blokhin Cancer Research Center, Kashirskoe Shosse 24, Moscow 115478, Russia
| | - Andrea Angeli
- Dipartimento di Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Florence, Italy
| | - Marta Ferraroni
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Florence, Italy
| | - Claudiu T Supuran
- Dipartimento di Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Florence, Italy
| | - Marina V Pokrovskaya
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
| | | | - Yulia A Gladilina
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
| | - Nikolay N Sokolov
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
| | - Abdullah Hilal
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
| | - Fabrizio Carta
- Dipartimento di Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Florence, Italy
| | - Dmitry D Zhdanov
- Institute of Biomedical Chemistry, Pogodinskaya Street 10/8, Moscow 119121, Russia
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7
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Zolotarev KV, Mikhailov AN, Mikhailova MV, Nakhod KV, Nakhod VI, Bodoev NV, Zhdanov DD. Tissue-Specific Expression of Genes Involved in Cellular Transportation in Common Carp (Cyprinus carpio) Exposed to Cadmium. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 106:978-982. [PMID: 34021770 DOI: 10.1007/s00128-021-03270-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 05/15/2021] [Indexed: 06/12/2023]
Abstract
Juvenile common carp were treated with Cd2+ at a sublethal concentration for Cyprinidae (6.4 mg/L). The expression of N-methyl-D-aspartate receptor subunit genes (NR2A, NR2B) and ATP-binding cassette subfamily C member 1 gene (ABCC1) was compared between treated and untreated fish. In addition, cadmium accumulation in the fish tissues was assessed. NR2A was 18.9-fold upregulated by Cd2+ in the eyes (choroid + retina), which accumulated Cd, and was not upregulated in brain, which didn't accumulate Cd. This may have been caused by the blocking of calcium channels by Cd2+, which has a very similar ionic radius to that of Ca2+. ABCC1 was 2.6-fold upregulated in gills and was not upregulated in liver; both tissues accumulated high levels of Cd. This difference may have been caused by the accumulation of predominantly previously inactivated Cd in liver or by some difference in the mechanisms of self-detoxification from Cd2+ in fish gills and liver.
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Affiliation(s)
| | - Anton N Mikhailov
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
| | - Marina V Mikhailova
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
| | - Kirill V Nakhod
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
| | - Valeriya I Nakhod
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
| | - Nikolay V Bodoev
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
| | - Dmitry D Zhdanov
- Institute of Biomedical Chemistry, 10 Pogodinskaya Street, Moscow, 119121, Russia
- Рeoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russia
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8
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Romodin LA, Vladimirov YA, Shangin SV, Vladimirov GK, Lysenko NP, Demikhov EI. Isoquinoline Coumarin Derivatives as Chemiluminescence Activators in Reactions of Lipid Peroxidation. Biophysics (Nagoya-shi) 2020. [DOI: 10.1134/s0006350920040181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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9
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Plyasova AA, Pokrovskaya MV, Lisitsyna OM, Pokrovsky VS, Alexandrova SS, Hilal A, Sokolov NN, Zhdanov DD. Penetration into Cancer Cells via Clathrin-Dependent Mechanism Allows L-Asparaginase from Rhodospirillum rubrum to Inhibit Telomerase. Pharmaceuticals (Basel) 2020; 13:E286. [PMID: 33008089 PMCID: PMC7650658 DOI: 10.3390/ph13100286] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/21/2020] [Accepted: 09/28/2020] [Indexed: 01/19/2023] Open
Abstract
The anticancer effect of L-asparaginases (L-ASNases) is attributable to their ability to hydrolyze L-asparagine in the bloodstream and cancer cell microenvironment. Rhodospirillum rubrum (RrA) has dual mechanism of action and plays a role in the suppression of telomerase activity. The aim of this work was to investigate the possible mechanism of RrA penetration into human cancer cells. Labeling of widely used L-ASNases by fluorescein isothiocyanate followed by flow cytometry and fluorescent microscopy demonstrated that only RrA can interact with cell membranes. The screening of inhibitors of receptor-mediated endocytosis demonstrated the involvement of clathrin receptors in RrA penetration into cells. Confocal microscopy confirmed the cytoplasmic and nuclear localization of RrA in human breast cancer SKBR3 cells. Two predicted nuclear localization motifs allow RrA to penetrate into the cell nucleus and inhibit telomerase. Chromatin relaxation promoted by different agents can increase the ability of RrA to suppress the expression of telomerase main catalytic subunit. Our study demonstrated for the first time the ability of RrA to penetrate into human cancer cells and the involvement of clathrin receptors in this process.
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Affiliation(s)
- Anna A. Plyasova
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
| | - Marina V. Pokrovskaya
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
| | - Olga M. Lisitsyna
- International Biotechnology Center “Generium” LLC, Vladimirskaya st. 14, 601125 Volginsky, Russia;
| | - Vadim S. Pokrovsky
- N.N. Blokhin Cancer Research Center, Kashirskoe Shosse 24, 115478 Moscow, Russia;
- Department of Biochemistry, Рeoples Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russia
| | - Svetlana S. Alexandrova
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
| | - Abdullah Hilal
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
| | - Nikolay N. Sokolov
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
| | - Dmitry D. Zhdanov
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia; (A.A.P.); (M.V.P.); (S.S.A.); (A.H.); (N.N.S.)
- Department of Biochemistry, Рeoples Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russia
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10
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Cai L, Sun Y, Wang K, Guan W, Yue J, Li J, Wang R, Wang L. The Better Survival of MSI Subtype Is Associated With the Oxidative Stress Related Pathways in Gastric Cancer. Front Oncol 2020; 10:1269. [PMID: 32850385 PMCID: PMC7399340 DOI: 10.3389/fonc.2020.01269] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/18/2020] [Indexed: 12/29/2022] Open
Abstract
Background: Gastric cancer (GC) is the third leading fatal cancer in the world and its incidence ranked second among all malignant tumors in China. The molecular classification of GC, proposed by the The Cancer Genome Atlas (TCGA), was added to the updated edition (2019) of WHO classification for digestive system tumor. Although MSI and EBV subtypes appeared as ever-increasingly significant roles in immune checkpoint inhibitor therapy, the underlying mechanisms are still unclear. Methods: We systematically summarized the relationship between EBV, d-MMR/MSI-H subtypes and clinicopathological parameters in 271 GC cases. Furthermore, GSE62254/ACRG and TCGA-STAD datasets, originated from Gene Expression Omnibus (GEO) and TCGA respectively, were analyzed to figure out the prognosis related molecular characteristics by bioinformatics methods. Results: Patients with MSI subtype had better prognosis than the MSS subtype (P = 0.013) and considered as an independent biomarker by the univariate analysis (P = 0.017) and multivariate analysis (P = 0.050). While there was no significant difference between EBV positive and negative tissues (P = 0.533). The positive prognostic value conferred by MSI in different cohorts was revalidated via the clinical analysis of GSE62254/ACRG and TCGA-STAD datasets regardless of race. Then key gene module that tightly associated with better status and longer OS time for MSI cases was obtained from weighted gene co-expression network analysis(WGCNA). NUBP2 and ENDOG were screened from the gene cluster and oxidative phosphorylation, reactive oxygen species(ROS) and glutathione metabolism were analyzed to be the differential pathways in their highly expressed groups. Conclusions: Our results manifested the significant prognostic value of MSI in Chinese GC cohort and comparisons with other populations. More opportunities to induce apoptosis of cancer cells, led by the unbalance between antioxidant system and ROS accumulation, lay foundations for unveiling the better prognosis in MSI phenotype through the bioinformatics analysis.
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Affiliation(s)
- Lei Cai
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yeqi Sun
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kezhou Wang
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wenbin Guan
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Juanqing Yue
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Junlei Li
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ruifen Wang
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lifeng Wang
- Department of Pathology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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11
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Berrino E, Angeli A, Zhdanov DD, Kiryukhina AP, Milaneschi A, De Luca A, Bozdag M, Carradori S, Selleri S, Bartolucci G, Peat TS, Ferraroni M, Supuran CT, Carta F. Azidothymidine "Clicked" into 1,2,3-Triazoles: First Report on Carbonic Anhydrase-Telomerase Dual-Hybrid Inhibitors. J Med Chem 2020; 63:7392-7409. [PMID: 32463228 PMCID: PMC8154556 DOI: 10.1021/acs.jmedchem.0c00636] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Cancer cells rely on the enzyme telomerase
(EC 2.7.7.49) to promote
cellular immortality. Telomerase inhibitors (i.e., azidothymidine)
can represent promising antitumor agents, although showing high toxicity
when administered alone. Better outcomes were observed within a multipharmacological
approach instead. In this context, we exploited the validated antitumor
targets carbonic anhydrases (CAs; EC 4.2.1.1) IX and XII to attain
the first proof of concept on CA–telomerase dual-hybrid inhibitors.
Compounds 1b, 7b, 8b, and 11b showed good in vitro
inhibition potency against the CAs IX and XII, with KI values in the low nanomolar range, and strong antitelomerase
activity in PC-3 and HT-29 cells (IC50 values ranging from
5.2 to 9.1 μM). High-resolution X-ray crystallography on selected
derivatives in the adduct with hCA II as a model study allowed to
determine their binding modes and thus to set the structural determinants
necessary for further development of compounds selectively targeting
the tumoral cells.
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Affiliation(s)
- Emanuela Berrino
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Andrea Angeli
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Dmitry D Zhdanov
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia.,Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russia
| | - Anna P Kiryukhina
- Institute of Biomedical Chemistry, Pogodinskaya st. 10/8, 119121 Moscow, Russia
| | - Andrea Milaneschi
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Alessandro De Luca
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Murat Bozdag
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Simone Carradori
- Department of Pharmacy, "G. d'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Silvia Selleri
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Gianluca Bartolucci
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Thomas S Peat
- CSIRO, 343 Royal Parade, Parkville, Victoria 3052, Australia
| | - Marta Ferraroni
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Florence), Italy
| | - Claudiu T Supuran
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
| | - Fabrizio Carta
- NEUROFARBA Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy
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12
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Inhibition of nuclease activity by a splice-switching oligonucleotide targeting deoxyribonuclease 1 mRNA prevents apoptosis progression and prolong viability of normal human CD4 + T-lymphocytes. Biochimie 2020; 174:34-43. [PMID: 32315661 DOI: 10.1016/j.biochi.2020.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/27/2020] [Accepted: 04/10/2020] [Indexed: 11/21/2022]
Abstract
The nuclease activity of deoxyribonuclease 1 (DNase I) is regulated by alternative splicing (AS) of its mRNA. The aim of this study was to define the ability of a splice-switching oligonucleotide (SSO) that base-paired with DNase I pre-mRNA to induce AS and inhibit nuclease activity in human T, B and NK lymphocytes. The SSO for DNase I could significantly downregulate the expression of full-length active DNase I and upregulate a truncated splice variant with a deleted exon 4. Such an induction of AS resulted in inhibition of nuclease activity and slowed apoptosis progression in anti-CD95/FAS stimulated lymphocytes. These results should facilitate further investigations of apoptosis regulation in lymphocytes and demonstrate that SSOs for DNase I are promising cytoprotective agents.
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Zhdanov DD, Gladilina YA, Pokrovsky VS, Grishin DV, Grachev VA, Orlova VS, Pokrovskaya MV, Alexandrova SS, Plyasova AA, Sokolov NN. Endonuclease G modulates the alternative splicing of deoxyribonuclease 1 mRNA in human CD4 + T lymphocytes and prevents the progression of apoptosis. Biochimie 2018; 157:158-176. [PMID: 30521874 DOI: 10.1016/j.biochi.2018.11.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/30/2018] [Indexed: 02/08/2023]
Abstract
Apoptotic endonucleases act cooperatively to fragment DNA and ensure the irreversibility of apoptosis. However, very little is known regarding the potential regulatory links between endonucleases. Deoxyribonuclease 1 (DNase I) inactivation is caused by alternative splicing (AS) of DNase I pre-mRNA skipping exon 4, which occurs in response to EndoG overexpression in cells. The current study aimed to determine the role of EndoG in the regulation of DNase I mRNA AS and the modulation of its enzymatic activity. A strong correlation was identified between the EndoG expression levels and DNase I splice variants in human lymphocytes. EndoG overexpression in CD4+ T cells down-regulated the mRNA levels of the active full-length DNase I variant and up-regulated the levels of the non-active spliced variant, which acts in a dominant-negative fashion. DNase I AS was induced by the translocation of EndoG from mitochondria into nuclei during the development of apoptosis. The DNase I spliced variant was induced by recombinant EndoG or by incubation with EndoG-digested cellular RNA in an in vitro system with isolated cell nuclei. Using antisense DNA oligonucleotides, we identified a 72-base segment that spans the adjacent segments of exon 4 and intron 4 and appears to be responsible for the AS. DNase I-positive CD4+ T cells overexpressing EndoG demonstrated decreased progression towards bleomycin-induced apoptosis. Therefore, EndoG is an endonuclease with the unique ability to inactivate another endonuclease, DNase I, and to modulate the development of apoptosis.
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Affiliation(s)
- Dmitry D Zhdanov
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia; Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198, Moscow, Russia.
| | - Yulia A Gladilina
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia
| | - Vadim S Pokrovsky
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia; Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198, Moscow, Russia; N.N. Blokhin Cancer Research Center, Kashirskoe Shosse 24, 115478, Moscow, Russia
| | - Dmitry V Grishin
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia
| | - Vladimir A Grachev
- Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198, Moscow, Russia
| | - Valentina S Orlova
- Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198, Moscow, Russia
| | | | | | - Anna A Plyasova
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia
| | - Nikolay N Sokolov
- Institute of Biomedical Chemistry, Pogodinskaya St 10/8, 119121, Moscow, Russia
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Contact-independent suppressive activity of regulatory T cells is associated with telomerase inhibition, telomere shortening and target lymphocyte apoptosis. Mol Immunol 2018; 101:229-244. [PMID: 30025223 DOI: 10.1016/j.molimm.2018.07.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/02/2018] [Accepted: 07/11/2018] [Indexed: 02/08/2023]
Abstract
Regulatory T cells (Tregs) play a fundamental role in the maintenance of immunological tolerance by suppressing effector target T, B and NK lymphocytes. Contact-dependent suppression mechanisms have been well-studied, though contact-independent Treg activity is not fully understood. In the present study, we showed that human native Tregs, as well as induced ex vivo Tregs, can cause in vitro telomere-dependent senescence in target T, B and NK cells in a contact-independent manner. The co-cultivation of target cells with Tregs separated through porous membranes induced alternative splicing of the telomerase catalytic subunit hTERT (human Telomerase Reverse Transcriptase), which suppressed telomerase activity. Induction of the hTERT splicing variant was associated with increased expression of the apoptotic endonuclease EndoG, a splicing regulator. Inhibited telomerase in target cells co-cultivated with Tregs for a long period of time led to a decrease in their telomere lengths, cell cycle arrest, conversion of the target cells to replicative senescence and apoptotic death. Induced Tregs showed the ability to up-regulate EndoG expression, TERT alternative splicing and telomerase inhibition in mouse T, B and NK cells after in vivo administration. The results of the present study describe a novel mechanism of contact-independent Treg cell suppression that induces telomerase inhibition through the EndoG-provoked alternative splicing of hTERT and converts cells to senescence and apoptosis phenotypes.
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Zhdanov DD, Gladilina YA, Pokrovsky VS, Grishin DV, Grachev VA, Orlova VS, Pokrovskaya MV, Alexandrova SS, Sokolov NN. Murine regulatory T cells induce death of effector T, B, and NK lymphocytes through a contact-independent mechanism involving telomerase suppression and telomere-associated senescence. Cell Immunol 2018; 331:146-160. [PMID: 29935763 DOI: 10.1016/j.cellimm.2018.06.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/22/2018] [Accepted: 06/18/2018] [Indexed: 12/30/2022]
Abstract
Regulatory T cells (Tregs) suppress the activity of effector T, B and NK lymphocytes and sustain immunological tolerance, but the proliferative activity of suppressed cells remains unexplored. In the present study, we report that mouse Tregs can induce replicative senescence and the death of responder mouse CD4+CD25- T cells, CD8+ T cells, B cells and NK cells in vitro and in vivo. Contact-independent in vitro co-cultivation with Tregs up-regulated endonuclease G (EndoG) expression and its translocation to the nucleus in responder cells. EndoG localization in the nucleus induced alternative mRNA splicing of the telomerase catalytic subunit Tert and telomerase inhibition. The lack of telomerase activity in proliferating cells led to telomere loss followed by the development of senescence and cell death. Injection of Tregs into mice resulted in EndoG-associated alternative splicing of Tert, telomerase inhibition, telomere loss, senescence development and increased cell death in vivo. The present study describes a novel contact-independent mechanism by which Tregs specify effector cell fate and provides new insights into cellular crosstalk related to immune suppression.
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Affiliation(s)
- Dmitry D Zhdanov
- Institute of Biomedical Chemistry, Pogodinskaya st 10/8, 119121 Moscow, Russia; Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia.
| | - Yulia A Gladilina
- Institute of Biomedical Chemistry, Pogodinskaya st 10/8, 119121 Moscow, Russia
| | - Vadim S Pokrovsky
- Institute of Biomedical Chemistry, Pogodinskaya st 10/8, 119121 Moscow, Russia; Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia; N.N. Blokhin Cancer Research Center, Kashirskoe Shosse 24, 115478 Moscow, Russia
| | - Dmitry V Grishin
- Institute of Biomedical Chemistry, Pogodinskaya st 10/8, 119121 Moscow, Russia
| | - Vladimir A Grachev
- Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | - Valentina S Orlova
- Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | | | | | - Nikolay N Sokolov
- Institute of Biomedical Chemistry, Pogodinskaya st 10/8, 119121 Moscow, Russia
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16
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Zhdanov DD, Gladilina YA, Orlova VS, Grishin DV, Pokrovskaya MV, Aleksandrova SS, Podobed OV, Sokolov NN. Induction of Telomerase Catalytic Subunit Alternative Splicing by Apoptotic Endonuclease G in Mouse and Rat Lymphocytes. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s1990519x18030124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Zhdanov DD, Gladilina YA, Grishin DV, Pokrovsky VS, Pokrovskaya MV, Aleksandrova SS, Sokolov NN. Apoptotic Endonuclease EndoG Induces Alternative Splicing of Telomerase TERT Catalytic Subunit, Caspase-2, DNase I, and BCL-x in Human, Murine, and Rat CD4+ T Lymphocytes. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1068162018010181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Induction of Alternative Splicing and Inhibition of Activity of Telomerase Catalytic Subunit by Apoptotic Endonuclease EndoG in Human T, B, and NK Cells. Bull Exp Biol Med 2018; 164:478-482. [PMID: 29504103 DOI: 10.1007/s10517-018-4016-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 10/17/2022]
Abstract
The effect of apoptotic endonuclease EndoG on alternative splicing of mRNA of human telomerase catalytic subunit hTERT (human telomerase reverse transcriptase) and telomerase activity in normal human lymphocytes were studied. Human CD4+, CD8+, B, and NK cells were transfected with a plasmid pEndoG-GFP containing EndoG gene or control plasmid pGFP. The levels of mRNA of EndoG or hTERT splicing variants were analyzed by real-time PCR. Protein content was assessed by Western blotting. Telomerase activity was measured by the telomere repeats amplification protocol. EndoG overexpression reduced the expression of active full-length hTERT and increased the expression of inactive splice variant. Shifted balance of hTERT splice variants in cells led to a significant decrease in telomerase activity within 72 h after transfection.
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Zhdanov DD, Pokrovsky VS, Orlova EV, Orlova VS, Pokrovskaya MV, Aleksandrova SS, Sokolov NN. Intracellular Localization of Apoptotic Endonuclease EndoG and Splice-Variants of Telomerase Catalytic Subunit hTERT. BIOCHEMISTRY (MOSCOW) 2017; 82:894-905. [PMID: 28941457 DOI: 10.1134/s0006297917080041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The activity of telomerase catalytic subunit hTERT (human telomerase reverse transcriptase) can be regulated by alternative splicing of its mRNA. The mechanism of hTERT splicing is not understood in detail. Apoptotic endonuclease EndoG is known to participate in this process. In the present work, the intracellular colocalization and mRNA levels of EndoG and hTERT splice-variants in normal and apoptotic cancer cells were studied. We found that the development of apoptosis increased the expression of EndoG and changed the ratio of hTERT splice-variants, which decreased the telomerase activity in the cells. The development of apoptosis was accompanied by changes in the amount of mRNA and in the localization of EndoG and hTERT splice-variants in the cytoplasm, nuclei, and mitochondria of the cells. The suppression of EndoG expression using RNA interference prevented induction of the α+β- splice-variant of hTERT and inhibition of the telomerase activity. A high degree of the intracellular colocalization of EndoG and hTERT was shown. The changes in the expression and localization of EndoG corresponded with changes in the amount and localization of hTERT splice-variants. These data confirm the participation of EndoG in the alternative splicing of mRNA of the telomerase catalytic subunit and in regulation of the telomerase activity.
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Affiliation(s)
- D D Zhdanov
- Orekhovich Institute of Biomedical Chemistry, Moscow, 119121, Russia.
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