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Kostenkova K, Arhouma Z, Postal K, Rajan A, Kortz U, Nunes GG, Crick DC, Crans DC. Pt IV- or Mo VI-substituted decavanadates inhibit the growth of Mycobacterium smegmatis. J Inorg Biochem 2021; 217:111356. [PMID: 33582396 DOI: 10.1016/j.jinorgbio.2021.111356] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
Inhibitory effects of two monosubstituted decavanadates by PtIV in monoplatino(IV)nonavanadate(V) ([H2PtIVV9O28]5-, V9Pt), and by MoIV in monomolybdo(VI)nonavanadate(V) ([MoVIV9O28]5-,V9Mo) were investigated against the growth of Mycobacterium smegmatis with the EC50 values of 0.0048 mM and 0.015 mM, respectively. These compare to the reported inhibitory value for decavanadate ([V10O28]6-/[HV10O28]5-, V10) on Mycobacterium smegmatis (EC50 = 0.0037 mM). Time-dependent 51V NMR spectroscopic studies were carried out for all three polyanions in aqueous solution, biological medium (7H9), heated and non-heated supernatant to evaluate their stability in their respective media, monitor their hydrolysis to form various oxovanadates over time and calculate the EC50 values. These studies allow us to calculate adjusted and maximum EC50 for the polyoxovanadate (POV) present in solution at the beginning of the study when there is most intact anion in the media and thus the EC50 values represent the initial effects of the POVs. The results have shown that V10 is 1.3 times more potent than V9Pt and 4 times more potent than V9Mo, indicating that the inhibitory effects of monosubstituted polyanions are related to the V10 structure. We attributed the minor differences in the growth inhibitory effects to the differences in charges (5- vs 6-) of V9Pt and V9Mo compared to V10 and/or the differences in the chemical composition. We concluded that the potency of the growth inhibition by V10 is mainly due to the chemical properties of the vanadium and the decametalate's unique structure even though the presence of the Mycobacterium smegmatis facilitate hydrolysis of the anions. SYNOPSIS: Two decavanadate derivatives, monoplatino(IV)nonavanadate(V) ([H2PtIVV9O28]5-), monomolybdo(VI)nonavanadate(V) ([MoVIV9O28]5-) and decavanadate are more potent growth inhibitors of Mycobacterium smegmatis than monomeric vanadate. The spectroscopic characterization carried out in the growth medium led to the conclusion that both the decavanadate structure and its properties are important for its growth effects.
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Affiliation(s)
- Kateryna Kostenkova
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Zeyad Arhouma
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States
| | - Kahoana Postal
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Ananthu Rajan
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Giovana G Nunes
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Dean C Crick
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States; Microbiology, Immunology, and Pathology Department, Colorado State University, Fort Collins, CO 80523, United States
| | - Debbie C Crans
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States.
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Alshiraihi IM, Jarrell DK, Arhouma Z, Hassell KN, Montgomery J, Padilla A, Ibrahim HM, Crans DC, Kato TA, Brown MA. In Silico/In Vitro Hit-to-Lead Methodology Yields SMYD3 Inhibitor That Eliminates Unrestrained Proliferation of Breast Carcinoma Cells. Int J Mol Sci 2020; 21:ijms21249549. [PMID: 33333978 PMCID: PMC7765450 DOI: 10.3390/ijms21249549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 12/29/2022] Open
Abstract
SMYD3 is a lysine methyltransferase that regulates the expression of over 80 genes and is required for the uncontrolled proliferation of most breast, colorectal, and hepatocellular carcinomas. The elimination of SMYD3 restores normal expression patterns of these genes and halts aberrant cell proliferation, making it a promising target for small molecule inhibition. In this study, we sought to establish a proof of concept for our in silico/in vitro hit-to-lead enzyme inhibitor development platform and to identify a lead small molecule candidate for SMYD3 inhibition. We used Schrodinger® software to screen libraries of small molecules in silico and the five compounds with the greatest predicted binding affinity within the SMYD3 binding pocket were purchased and assessed in vitro in direct binding assays and in breast cancer cell lines. We have confirmed the ability of one of these inhibitors, Inhibitor-4, to restore normal rates of cell proliferation, arrest the cell cycle, and induce apoptosis in breast cancer cells without affecting wildtype cell behavior. Our results provide a proof of concept for this fast and affordable small molecule hit-to-lead methodology as well as a promising candidate small molecule SMYD3 inhibitor for the treatment of human cancer.
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Affiliation(s)
- Ilham M. Alshiraihi
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
- Department of Biology, University of Tabuk, Tabuk 47713, Saudi Arabia
| | - Dillon K. Jarrell
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO 80045-7109, USA;
| | - Zeyad Arhouma
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Kelly N. Hassell
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
| | - Jaelyn Montgomery
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1617, USA; (J.M.); (A.P.)
| | - Alyssa Padilla
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1617, USA; (J.M.); (A.P.)
| | - Hend M. Ibrahim
- Department of Medical Biochemistry, Zagazig University, Zagazig 44511, Egypt;
- Department of Environmental & Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523-1618, USA
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523-1678, USA
| | - Debbie C. Crans
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Takamitsu A. Kato
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
- Department of Environmental & Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523-1618, USA
| | - Mark A. Brown
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523-1005, USA; (I.M.A.); (Z.A.); (K.N.H.); (D.C.C.); (T.A.K.)
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523-1678, USA
- Epidemiology Section, Colorado School of Public Health, Fort Collins, CO 80523-1612, USA
- Institute for Learning and Teaching, Colorado State University, Fort Collins, CO 80523-1052, USA
- Department of Ethnic Studies, Colorado State University, Fort Collins, CO 80523-1790, USA
- Correspondence:
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Samart N, Arhouma Z, Kumar S, Murakami HA, Crick DC, Crans DC. Decavanadate Inhibits Mycobacterial Growth More Potently Than Other Oxovanadates. Front Chem 2018; 6:519. [PMID: 30515375 PMCID: PMC6255961 DOI: 10.3389/fchem.2018.00519] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 10/09/2018] [Indexed: 01/06/2023] Open
Abstract
51V NMR spectroscopy is used to document, using speciation analysis, that one oxometalate is a more potent growth inhibitor of two Mycobacterial strains than other oxovanadates, thus demonstrating selectivity in its interaction with cells. Historically, oxometalates have had many applications in biological and medical studies, including study of the phase-problem in X-ray crystallography of the ribosome. The effect of different vanadate salts on the growth of Mycobacterium smegmatis (M. smeg) and Mycobacterium tuberculosis (M. tb) was investigated, and speciation was found to be critical for the observed growth inhibition. Specifically, the large orange-colored sodium decavanadate (V10O 28 6 - ) anion was found to be a stronger inhibitor of growth of two mycobacterial species than the colorless oxovanadate prepared from sodium metavanadate. The vanadium(V) speciation in the growth media and conversion among species under growth conditions was monitored using 51V NMR spectroscopy and speciation calculations. The findings presented in this work is particularly important in considering the many applications of polyoxometalates in biological and medical studies, such as the investigation of the phase-problem in X-ray crystallography for the ribosome. The findings presented in this work investigate the interactions of oxometalates with other biological systems.
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Affiliation(s)
- Nuttaporn Samart
- Department of Chemistry, Colorado State University, Fort Collins, CO, United States
- Department of Chemistry, Rajabhat Rajanagarindra University, Chachoengsao, Thailand
| | - Zeyad Arhouma
- Department of Chemistry, Colorado State University, Fort Collins, CO, United States
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, United States
| | - Santosh Kumar
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Heide A. Murakami
- Department of Chemistry, Colorado State University, Fort Collins, CO, United States
| | - Dean C. Crick
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, United States
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Debbie C. Crans
- Department of Chemistry, Colorado State University, Fort Collins, CO, United States
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, United States
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