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Kakraba S, Ayyadevara S, Mainali N, Balasubramaniam M, Bowroju S, Penthala NR, Atluri R, Barger SW, Griffin ST, Crooks PA, Shmookler Reis RJ. Thiadiazolidinone (TDZD) Analogs Inhibit Aggregation-Mediated Pathology in Diverse Neurodegeneration Models, and Extend C. elegans Life- and Healthspan. Pharmaceuticals (Basel) 2023; 16:1498. [PMID: 37895969 PMCID: PMC10610358 DOI: 10.3390/ph16101498] [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: 08/25/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
Chronic, low-grade inflammation has been implicated in aging and age-dependent conditions, including Alzheimer's disease, cardiomyopathy, and cancer. One of the age-associated processes underlying chronic inflammation is protein aggregation, which is implicated in neuroinflammation and a broad spectrum of neurodegenerative diseases such as Alzheimer's, Huntington's, and Parkinson's diseases. We screened a panel of bioactive thiadiazolidinones (TDZDs) from our in-house library for rescue of protein aggregation in human-cell and C. elegans models of neurodegeneration. Among the tested TDZD analogs, PNR886 and PNR962 were most effective, significantly reducing both the number and intensity of Alzheimer-like tau and amyloid aggregates in human cell-culture models of pathogenic aggregation. A C. elegans strain expressing human Aβ1-42 in muscle, leading to AD-like amyloidopathy, developed fewer and smaller aggregates after PNR886 or PNR962 treatment. Moreover, age-progressive paralysis was reduced 90% by PNR886 and 75% by PNR962, and "healthspan" (the median duration of spontaneous motility) was extended 29% and 62%, respectively. These TDZD analogs also extended wild-type C. elegans lifespan by 15-30% (p < 0.001), placing them among the most effective life-extension drugs. Because the lead drug in this family, TDZD-8, inhibits GSK3β, we used molecular-dynamic tools to assess whether these analogs may also target GSK3β. In silico modeling predicted that PNR886 or PNR962 would bind to the same allosteric pocket of inactive GSK3β as TDZD-8, employing the same pharmacophore but attaching with greater avidity. PNR886 and PNR962 are thus compelling candidate drugs for treatment of tau- and amyloid-associated neurodegenerative diseases such as AD, potentially also reducing all-cause mortality.
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Affiliation(s)
- Samuel Kakraba
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
| | - Srinivas Ayyadevara
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
- Central Arkansas Veterans Healthcare Service, Little Rock, AR 72205, USA
| | - Nirjal Mainali
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
| | - Meenakshisundaram Balasubramaniam
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
| | - Suresh Bowroju
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (S.B.); (N.R.P.); (P.A.C.)
| | - Narsimha Reddy Penthala
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (S.B.); (N.R.P.); (P.A.C.)
| | - Ramani Atluri
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
| | - Steven W. Barger
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
- Central Arkansas Veterans Healthcare Service, Little Rock, AR 72205, USA
| | - Sue T. Griffin
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
- Central Arkansas Veterans Healthcare Service, Little Rock, AR 72205, USA
| | - Peter A. Crooks
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (S.B.); (N.R.P.); (P.A.C.)
| | - Robert J. Shmookler Reis
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (N.M.); (M.B.); (R.A.); (S.W.B.); (S.T.G.)
- Central Arkansas Veterans Healthcare Service, Little Rock, AR 72205, USA
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Trends in H 2S-Donors Chemistry and Their Effects in Cardiovascular Diseases. Antioxidants (Basel) 2021; 10:antiox10030429. [PMID: 33799669 PMCID: PMC8002049 DOI: 10.3390/antiox10030429] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 02/26/2021] [Accepted: 03/08/2021] [Indexed: 12/15/2022] Open
Abstract
Hydrogen sulfide (H2S) is an endogenous gasotransmitter recently emerged as an important regulatory mediator of numerous human cell functions in health and in disease. In fact, much evidence has suggested that hydrogen sulfide plays a significant role in many physio-pathological processes, such as inflammation, oxidation, neurophysiology, ion channels regulation, cardiovascular protection, endocrine regulation, and tumor progression. Considering the plethora of physiological effects of this gasotransmitter, the protective role of H2S donors in different disease models has been extensively studied. Based on the growing interest in H2S-releasing compounds and their importance as tools for biological and pharmacological studies, this review is an exploration of currently available H2S donors, classifying them by the H2S-releasing-triggered mechanism and highlighting those potentially useful as promising drugs in the treatment of cardiovascular diseases.
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Severino B, Corvino A, Fiorino F, Luciano P, Frecentese F, Magli E, Saccone I, Di Vaio P, Citi V, Calderone V, Servillo L, Casale R, Cirino G, Vellecco V, Bucci M, Perissutti E, Santagada V, Caliendo G. 1,2,4-Thiadiazolidin-3,5-diones as novel hydrogen sulfide donors. Eur J Med Chem 2018; 143:1677-1686. [DOI: 10.1016/j.ejmech.2017.10.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/03/2017] [Accepted: 10/24/2017] [Indexed: 11/29/2022]
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Mossine AV, Brooks AF, Jackson IM, Quesada CA, Sherman P, Cole EL, Donnelly DJ, Scott PJH, Shao X. Synthesis of Diverse (11)C-Labeled PET Radiotracers via Direct Incorporation of [(11)C]CO2. Bioconjug Chem 2016; 27:1382-9. [PMID: 27043721 PMCID: PMC5637095 DOI: 10.1021/acs.bioconjchem.6b00163] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three new positron emission tomography (PET) radiotracers of interest to our functional neuroimaging and translational oncology programs have been prepared through new developments in [(11)C]CO2 fixation chemistry. [(11)C]QZ (glutaminyl cyclase) was prepared via a tandem trapping of [(11)C]CO2/intramolecular cyclization; [(11)C]tideglusib (glycogen synthase kinase-3) was synthesized through a tandem trapping of [(11)C]CO2 followed by an intermolecular cycloaddition between a [(11)C]isocyanate and an isothiocyanate to form the 1,2,4-thiadiazolidine-3,5-dione core; [(11)C]ibrutinib (Bruton's tyrosine kinase) was synthesized through a HATU peptide coupling of an amino precursor with [(11)C]acrylic acid (generated from [(11)C]CO2 fixation with vinylmagnesium bromide). All radiochemical syntheses are fully automated on commercial radiochemical synthesis modules and provide radiotracers in 1-5% radiochemical yield (noncorrected, based upon [(11)C]CO2). All three radiotracers have advanced to rodent imaging studies and preliminary PET imaging results are also reported.
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Affiliation(s)
- Andrew V. Mossine
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Allen F. Brooks
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Isaac M. Jackson
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Carole A. Quesada
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Phillip Sherman
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Erin L. Cole
- Discovery Chemistry Platforms, PET Radiochemical Synthesis, Bristol-Myers Squibb Research and Development, Princeton, NJ, USA
| | - David J. Donnelly
- Discovery Chemistry Platforms, PET Radiochemical Synthesis, Bristol-Myers Squibb Research and Development, Princeton, NJ, USA
| | - Peter J. H. Scott
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
- The Interdepartmental Program in Medicinal Chemistry, The University of Michigan, Ann Arbor, MI, USA
| | - Xia Shao
- Division of Nuclear Medicine, Department of Radiology, University of Michigan Medical School, Ann Arbor, MI, USA
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Selective liquid phase oxidation of secondary alcohols into ketones by tert-butyl hydroperoxide on nano-fibrous Ag-OMS-2 catalyst. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.09.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Turner EM, Blazer LL, Neubig RR, Husbands SM. Small Molecule Inhibitors of Regulator of G Protein Signalling (RGS) Proteins. ACS Med Chem Lett 2012; 3:146-150. [PMID: 22368763 DOI: 10.1021/ml200263y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Recently regulators of G protein signalling (RGS) proteins have emerged as potential therapeutic targets since they provide an alternative method of modulating the activity of GPCRs, the target of so many drugs. Inhibitors of RGS proteins must block a protein-protein interaction (RGS-Gα), but also be cell and, depending on the therapeutic target, blood brain barrier permeable. A lead compound (1a) was identified as an inhibitor of RGS4 in a screening assay and this has now been optimised for activity, selectivity and solubility. The newly developed ligands (11b, 13) display substantial selectivity over the closely related RGS8 protein, lack the off-target calcium mobilisation activity of the lead 1a and have excellent aqueous solubility. They are currently being evaluated in vivo in rodent models of depression.
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Affiliation(s)
- Emma M. Turner
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Levi L. Blazer
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109,
United States
| | - Richard R. Neubig
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109,
United States
| | - Stephen M. Husbands
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, United Kingdom
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Nasim S, Guzman ML, Jordan CT, Crooks PA. Discovery of 1,2,4-thiadiazolidine-3,5-dione analogs that exhibit unusual and selective rapid cell death kinetics against acute myelogenous leukemia cells in culture. Bioorg Med Chem Lett 2011; 21:4879-83. [PMID: 21757349 PMCID: PMC3725994 DOI: 10.1016/j.bmcl.2011.06.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 06/08/2011] [Indexed: 11/29/2022]
Abstract
4-Benzyl-2-methyl-1,2,4-thiadiazolidine-3,5-dione (TDZD-8) was previously identified as an antileukemic agent exhibiting no evident toxicity toward normal hematopoietic cells. An SAR study has been carried out to examine the effect of varying the C-2 and C-4- substituents on the thiadiazolidinone ring of TDZD-8 on antileukemic activity. These studies resulted in the identification of more druglike analogs that exhibited comparable potency to TDZD-8 in killing acute myelogenous leukemia (AML) cells in culture. Surprisingly, the cell death kinetics induced by several of these novel analogs on MV-411 cells were extremely fast, with commitment to death occurring within 30 min. At a concentration of 10 μM, 3f (LD(50)=3.5 μM) completely eradicated cell viability of MV-411 cells within 2h, while analog 3e (LD(50)=2.0 μM) decimated cell viability within 30 min at a concentration of 10 μM and effectively abolished cell viability at 5 μM within 1-2h.
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Affiliation(s)
- Shama Nasim
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 501A 725 Rose Street, Lexington, KY 40536, USA
| | - Monica L. Guzman
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - Craig T. Jordan
- James P. Wilmot Cancer Center, University of Rochester, Rochester, NY 14642, USA
| | - Peter A. Crooks
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 501A 725 Rose Street, Lexington, KY 40536, USA
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Blazer LL, Zhang H, Casey EM, Husbands SM, Neubig RR. A nanomolar-potency small molecule inhibitor of regulator of G-protein signaling proteins. Biochemistry 2011; 50:3181-92. [PMID: 21329361 DOI: 10.1021/bi1019622] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regulators of G-protein signaling (RGS) proteins are potent negative modulators of signal transduction through G-protein-coupled receptors. They function by binding to activated (GTP-bound) Gα subunits and accelerating the rate of GTP hydrolysis. Modulation of RGS activity by small molecules is an attractive mechanism for fine-tuning GPCR signaling for therapeutic and research purposes. Here we describe the pharmacologic properties and mechanism of action of CCG-50014, the most potent small molecule RGS inhibitor to date. It has an IC(50) for RGS4 of 30 nM and is >20-fold selective for RGS4 over other RGS proteins. CCG-50014 binds covalently to the RGS, forming an adduct on two cysteine residues located in an allosteric regulatory site. It is not a general cysteine alkylator as it does not inhibit activity of the cysteine protease papain at concentrations >3000-fold higher than those required to inhibit RGS4 function. It is also >1000-fold more potent as an RGS4 inhibitor than are the cysteine alkylators N-ethylmaleimide and iodoacetamide. Analysis of the cysteine reactivity of the compound shows that compound binding to Cys(107) in RGS8 inhibits Gα binding in a manner that can be reversed by cleavage of the compound-RGS disulfide bond. If the compound reacts with Cys(160) in RGS8, the adduct induces RGS denaturation, and activity cannot be restored by removal of the compound. The high potency and good selectivity of CCG-50014 make it a useful tool for studying the functional roles of RGS4.
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Affiliation(s)
- Levi L Blazer
- Department of Pharmacology, The University of Michigan, Ann Arbor, Michigan 48109, United States
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Veisi H, Ghorbani-Vaghei R. Recent progress in the application of N-halo reagents in the synthesis of heterocyclic compounds. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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