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Xu X, Zhu Z, Chen S, Fu Y, Zhang J, Guo Y, Xu Z, Xi Y, Wang X, Ye F, Chen H, Yang X. Synthesis and biological evaluation of novel benzothiazole derivatives as potential anticancer and antiinflammatory agents. Front Chem 2024; 12:1384301. [PMID: 38562527 PMCID: PMC10982501 DOI: 10.3389/fchem.2024.1384301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction: Cancer, a significant global health concern, necessitates innovative treatments. The pivotal role of chronic inflammation in cancer development underscores the urgency for novel therapeutic strategies. Benzothiazole derivatives exhibit promise due to their distinctive structures and broad spectrum of biological effects. This study aims to explore new anti-tumor small molecule drugs that simultaneously anti-inflammatory and anticancer based on the advantages of benzothiazole frameworks. Methods: The compounds were characterized by nuclear magnetic resonance (NMR), liquid chromatograph-mass spectrometer (LC-MS) and high performance liquid chromatography (HPLC) for structure as well as purity and other related physicochemical properties. The effects of the compounds on the proliferation of human epidermoid carcinoma cell line (A431) and human non-small cell lung cancer cell lines (A549, H1299) were evaluated by MTT method. The effect of compounds on the expression levels of inflammatory factors IL-6 and TNF-α in mouse monocyte macrophages (RAW264.7) was assessed using enzyme-linked immunosorbent assay (ELISA). The effect of compounds on apoptosis and cell cycle of A431 and A549 cells was evaluated by flow cytometry. The effect of compounds on A431 and A549 cell migration was evaluated by scratch wound healing assay. The effect of compounds on protein expression levels in A431 and A549 cells was assessed by Western Blot assay. The physicochemical parameters, pharmacokinetic properties, toxicity and drug similarity of the active compound were predicted using Swiss ADME and admetSAR web servers. Results: Twenty-five novel benzothiazole compounds were designed and synthesized, with their structures confirmed through spectrogram verification. The active compound 6-chloro-N-(4-nitrobenzyl) benzo[d] thiazol-2-amine (compound B7) was screened through a series of bioactivity assessments, which significantly inhibited the proliferation of A431, A549 and H1299 cancer cells, decreased the activity of IL-6 and TNF-α, and hindered cell migration. In addition, at concentrations of 1, 2, and 4 μM, B7 exhibited apoptosis-promoting and cell cycle-arresting effects similar to those of the lead compound 7-chloro-N-(2, 6-dichlorophenyl) benzo[d] thiazole-2-amine (compound 4i). Western blot analysis confirmed that B7 inhibited both AKT and ERK signaling pathways in A431 and A549 cells. The prediction results of ADMET indicated that B7 had good drug properties. Discussion: This study has innovatively developed a series of benzothiazole derivatives, with a focus on compound B7 due to its notable dual anticancer and anti-inflammatory activities. B7 stands out for its ability to significantly reduce cancer cell proliferation in A431, A549, and H1299 cell lines and lower the levels of inflammatory cytokines IL-6 and TNF-α. These results position B7B7 as a promising candidate for dual-action cancer therapy. The study's mechanistic exploration, highlighting B7's simultaneous inhibition of the AKT and ERK pathways, offers a novel strategy for addressing both the survival mechanisms of tumor cells and the inflammatory milieu facilitating cancer progression.
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Affiliation(s)
- Xuemei Xu
- Department of Pharmacy, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
| | - Zhaojingtao Zhu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Siyu Chen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yanneng Fu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Jinxia Zhang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yangyang Guo
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Zhouyang Xu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yingying Xi
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Xuebao Wang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Faqing Ye
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Huijun Chen
- Department of Pharmacy, The First People’s Hospital of Taizhou, Taizhou, China
| | - Xiaojiao Yang
- Scientific Research Center, Wenzhou Medical University, Wenzhou, China
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Al-Otaibi JS, Sheena Mary Y, Shyma Mary Y, Kumar Trivedi R, Chakraborty B, Churchill DG. Theoretical SERS study of the strength and suitability of Cu12 nanostar for SERS: Complete theoretical studies, coinage metal SM12 comparisons, benzothiazole (BTH) adsorbent. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Alamri MA, Al‐Jahdali M, Al‐Radadi NS, Hussien MA. Characterization, theoretical investigation, and biological applications of Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes of a triazene ligand containing a benzothiazole ring. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mona A. Alamri
- Department of Chemistry, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Department of Physics, College of Science and Arts in Dariyah Qassim University Dariyah Saudi Arabia
| | - Mutlaq. Al‐Jahdali
- Department of Chemistry, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
| | - Najlaa S. Al‐Radadi
- Chemistry Department, College of Science Taibah University Al‐Madinah Al‐Munawarah Saudi Arabia
| | - Mostafa A. Hussien
- Department of Chemistry, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Department of Chemistry, Faculty of Science Port Said University Port Said Egypt
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Synthesis, antioxidant activity and bioinformatics studies of L-3-hydroxytyrosine templated N-alkyl/aryl substituted urea/thioureas. Bioorg Chem 2021; 111:104837. [PMID: 33812281 DOI: 10.1016/j.bioorg.2021.104837] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/06/2021] [Accepted: 03/16/2021] [Indexed: 11/21/2022]
Abstract
A new series of urea/thiourea derivatives have been efficiently synthesized from the reaction of L-3-hydroxytyrosine with selective isocyanates/isothiocyanates and characterized by Infra-red, proton & carbon-13 nuclear magnetic resonance spectral and mass spectrometry studies. All the synthesized compounds have been screened for their antioxidant activity by 1,1-diphenyl1-2-picrylhydrazyl radical assay, ferric reducing antioxidant power assay and also studied their molecular docking interaction profiles against 1N8Q and 3NRZ enzymatic proteins. The in vitro antioxidant activity has further supported by quantitative structure activity relationship, absorption, distribution, metabolism, and excretion & toxicity studies, bioactivity studies & enzyme inhibition assay and identified that they were potentially bound to ASP490 & ASP361 aminoacid residue in chain A of 1N8Q protein and GLN1194 aminoacid residue in chain L of 3NRZ protein and are responsible for potential antioxidant activity. It is proved that urea derivatives linked with 4-fluoro & 4-nitro and thiourea derivatives linked with 3-chloro & 4-fluoro have exhibited promising antioxidant activity. In eventual synthesized compounds have been identified as potential blood-brain barrier penetrable compounds and proficient central nervous system active neuro-protective antioxidant agents as they have envisaged as easily penetrable to blood-brain barrier thresholds, a neuroprotective property.
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Alamri MA, Al-Jahdali M, Al-Radadi NS, Hussien MA. Biological activity evaluation and computational study of novel triazene derivatives containing benzothiazole rings. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Avvaru SP, Noolvi MN, More UA, Chakraborty S, Dash A, Aminabhavi TM, Narayan KP, Sutariya V. Synthesis and Anticancer Activity of Thiadiazole Containing Thiourea, Benzothiazole and Imidazo[2,1-b][1,3,4]thiadiazole Scaffolds. Med Chem 2020; 17:750-765. [PMID: 32427086 DOI: 10.2174/1573406416666200519085626] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/29/2020] [Accepted: 02/24/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND A great array of nitrogen-containing heterocyclic rings were being extensively explored for their functional versatility in the field of medicine, especially in anticancer research. 1,3,4- thiadiazole is one of such heterocyclic rings with promising anticancer activity against several cancer cell lines, inhibiting diverse biological targets. INTRODUCTION The 1,3,4-thiadiazole, when equipped with other heterocyclic scaffolds, has displayed enhanced anticancer properties. The thiourea, benzothiazole, imidazo[2,1,b][1,3,4]-thiadiazoles are such potential scaffolds with promising anticancer activity. METHODS A new series of 5-substituted-1,3,4-thiadiazoles linked with phenyl thiourea, benzothiazole and 2,6-disubstituted imidazo[2,1-b][1,3,4]thiadiazole derivatives were synthesized and tested for invitro anticancer activity on various cancer cell lines. RESULTS The National Cancer Institute's preliminary anticancer screening results showed compounds 4b and 5b having potent antileukemic activity. Compound 4b selectively showed 32 percent lethality on Human Leukemia-60 cell line. The docking studies of the derivatives on aromatase enzyme (Protein Data Bank: 3S7S) have shown reversible interactions at the active site with good docking scores comparable to Letrozole and Exemestane. Furthermore, the selected derivatives were tested for anticancer activity on HeLa cell line based on the molecular docking studies. CONCLUSION Compounds 4b and 5b showed effective inhibition equivalent to Letrozole. These preliminary biological screening studies have given positive anticancer activity for these new classes of derivatives. An additional research study like the mechanism of action of the anticancer activity of this new class of compounds is necessary. These groundwork studies illuminate a future pathway for research of this class of compounds enabling the discovery of potent antitumor agents.
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Affiliation(s)
- Stephen P Avvaru
- Department of Pharmacy, Gujarat Technological University, Ahmedabad, India
| | - Malleshappa N Noolvi
- Department of Pharmaceutical Chemistry, Shree Dhanvantary Pharmacy College, Surat, India
| | - Uttam A More
- Pharmaceutical Chemistry, Shree Dhanvantary Pharmacy College, Surat, India
| | | | - Ashutosh Dash
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Mumbai, India
| | | | - Kumar P Narayan
- Biological Sciences, Birla Institute of Technology & Science-Pilani, Hyderabad, India
| | - Vishnu Sutariya
- Pharmaceutical Analysis, Shree Dhanvantary Pharmacy College, Surat, India
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Vadabingi N, Avula VKR, Zyryanov GV, Vallela S, Anireddy JS, Pasupuleti VR, Mallepogu V, Chamarthi NR, Ponne VC. Multiple molecular targets mediated antioxidant activity, molecular docking, ADMET, QSAR and bioactivity studies of halo substituted urea derivatives of α-Methyl-l-DOPA. Bioorg Chem 2020; 97:103708. [PMID: 32146177 DOI: 10.1016/j.bioorg.2020.103708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 11/28/2022]
Abstract
A series of novel α-methyl-l-DOPA urea derivatives viz., 3-(3,4-dihydroxyphenyl)-2-methyl-2-(3-halo/trifluoromethyl substituted phenyl ureido)propanoic acids (6a-e) have been synthesized from the reaction of α-methyl-l-DOPA (3) with various aryl isocyanates (4a-e) by using triethylamine (5, TEA) as a base catalyst in THF at reflux conditions. The synthesized compounds are structurally characterized by spectral (IR, 1H &13C NMR and MASS) and elemental analysis studies and screened for their in-vitro antioxidant activity against DPPH, NO and H2O2 free radical scavenging assays and identified compounds 6c &6d as potential antioxidants. The acquired in vitro results were correlated with the results of molecular docking, ADMET, QSAR and bioactivity studies performed for them and predicted that the recorded in silico binding affinities are in good correlation with the in vitro antioxidant activity results. The molecular docking analysis has comprehended the strong hydrogen bonding interactions of 6a-e with 1CB4, 1N8Q, 3MNG, 1OG5, 1DNU, 3NRZ, 2CDU, 1HD2 and 2HCK proteins of their respective SOD, LO, PRXS5, CP450, MP, XO, NO, PRY5 and HCK enzymes. This has sustained the effective binding of 6a-e and resulted in functional inhibition of selective aminoacid residues to be pronounced as multiple molecular targets mediated antioxidant potent compounds. In addition, the evaluated toxicology risks of 6a-e are identified with in the potential limits of drug candidates. The conformational analysis of 6c & 6d prominently infers that urea moiety uniting α-methyl-l-DOPA with halo substituted aryl units into a distinctive orientation to comply good structure-activity to inhibit the proliferation of reactive oxygen species in vivo.
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Affiliation(s)
- Nagalakshmamma Vadabingi
- Department of Chemistry, Tirumala Tirupati Devasthanam's Sri Venkateswara Arts College, Tirupati 517502, Andhra Pradesh, India
| | - Vijaya Kumar Reddy Avula
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation
| | - Grigory V Zyryanov
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation; Ural Division of the Russian Academy of Sciences, I. Ya. Postovskiy Institute of Organic Synthesis, 22 S. Kovalevskoy Street, Yekaterinburg 620219, Russian Federation
| | - Swetha Vallela
- Centre for Chemical Science and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University Hyderabad, Hyderabad 500085, Telangana, India
| | - Jaya Shree Anireddy
- Centre for Chemical Science and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University Hyderabad, Hyderabad 500085, Telangana, India
| | - Visweswara Rao Pasupuleti
- Department of Biomedical Sciences and Therapeutics, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Venkataswamy Mallepogu
- Department of Biochemistry, Sri Venkateswara University College of Sciences, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India
| | - Naga Raju Chamarthi
- Department of Chemistry, Sri Venkateswara University College of Sciences, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India.
| | - Venkata Chalapathi Ponne
- Department of Chemistry, Tirumala Tirupati Devasthanam's Sri Venkateswara Arts College, Tirupati 517502, Andhra Pradesh, India.
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Sharghi H, Razavi SF, Aberi M, Tavakoli F, Shekouhy M. The Co
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Complex of [7‐Hydroxy‐4‐methyl‐8‐coumarinyl]glycine as a Nanocatalyst for the Synthesis and Biological Evaluation of New Mannich Bases of Benzimidazoles and Benzothiazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.201904700] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hashem Sharghi
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
| | | | - Mahdi Aberi
- Department of Chemical and Materials Engineering, Faculty of Shahid Rajaee, Shiraz BranchTechnical and Vocational University (TVU), Shiraz Iran
| | - Fatemeh Tavakoli
- Department of Toxicology, Faculty of PharmacyShahid Sadoughi University of Medical Sciences, Yazd Iran
| | - Mohsen Shekouhy
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
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Elgemeie GH, Azzam RA, Osman RR. Recent advances in synthesis, metal complexes and biological evaluation of 2-aryl, 2-pyridyl and 2-pyrimidylbenzothiazoles as potential chemotherapeutics. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119302] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Lachhi Reddy V, Avula VKR, Zyryanov GV, Vallela S, Anireddy JS, Pasupuleti VR, Chamarthi NR. Hunig's base catalyzed synthesis of new 1-(2,3-dihydro-1H-inden-1-yl)-3-aryl urea/thiourea derivatives as potent antioxidants and 2HCK enzyme growth inhibitors. Bioorg Chem 2019; 95:103558. [PMID: 31911311 DOI: 10.1016/j.bioorg.2019.103558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/28/2019] [Accepted: 12/24/2019] [Indexed: 02/02/2023]
Abstract
A series of 1-(2,3-dihydro-1H-indan-1-yl)-3-aryl urea/thiourea derivatives (4a-j) have been synthesized from the reaction of 2,3-dihydro-1H-inden-1-amine (2) with various aryl isocyanates/isothiocyanates (3a-j) by using N,N-DIPEA base (Hunig's base) catalyst in THF at reflux conditions. All of them are structurally confirmed by spectral (IR, 1H &13C NMR and MASS) and elemental analysis and screened for their in-vitro antioxidant activity against DPPH and NO free radicals and found that compounds 4b, 4i, 4h &4g are potential antioxidants. The obtained in vitro results were compared with the molecular docking, ADMET, QSAR and bioactivity study results performed for them and identified that the recorded in silico binding affinities were observed in good correlation with the in vitro antioxidant results. The Molecular docking analysis had unveiled the strong hydrogen bonding interactions of synthesized ligands with ARG 160 residue of protein tyrosine kinase (2HCK) enzyme and plays an effective role in its inhibition. Toxicology studies have assessed the potential risks of 4a-j and inferred that all of them were in the limits of potential drugs. The conformational analysis of 4a-j inferred that the urea/thiourea spacer linking 2,3-dihydro-1H-inden-1-amino and substituted aryl units has facilitated all these molecules to effectively bind with ARG 160 amino acid residue present on the α-helix of the protein tyrosine kinase (2HCK) enzyme specifically on chain A of hemopoetic cell kinase. Collectively this study has established a relationship between the antioxidant potentiality and ligands binding with ARG 160 amino acid residue of chain A of 2HCK enzyme to inhibit its growth as well as proliferation of reactive oxygen species in vivo.
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Affiliation(s)
- Venkataramana Lachhi Reddy
- Department of Chemistry, Sri Venkateswara University College of Sciences, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India
| | - Vijay Kumar Reddy Avula
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation
| | - Grigoriy V Zyryanov
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg 620002, Russian Federation; Ural Division of the Russian Academy of Sciences, I. Ya. Postovskiy Institute of Organic Synthesis, 22 S. Kovalevskoy Street, Yekaterinburg 620219, Russian Federation
| | - Swetha Vallela
- Centre for Chemical Science and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University Hyderabad, Hyderabad 500085, Telangana, India
| | - Jaya Shree Anireddy
- Centre for Chemical Science and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University Hyderabad, Hyderabad 500085, Telangana, India
| | - Visweswara Rao Pasupuleti
- Department of Biomedical Sciences and Therapeutics, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Naga Raju Chamarthi
- Department of Chemistry, Sri Venkateswara University College of Sciences, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India.
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Han AR, Yang JW, Na JM, Choi SY, Cho SW. Protective effects of N,4,5-trimethylthiazol-2-amine hydrochloride on hypoxia-induced β-amyloid production in SH-SY5Y cells. BMB Rep 2019. [PMID: 30355438 PMCID: PMC6675249 DOI: 10.5483/bmbrep.2019.52.7.231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Although hypoxic/ischemic injury is thought to contribute to the incidence of Alzheimer’s disease (AD), the molecular mechanism that determines the relationship between hypoxia-induced β-amyloid (Aβ) generation and development of AD is not yet known. We have now investigated the protective effects of N,4,5-trimethylthiazol-2-amine hydrochloride (KHG26702), a novel thiazole derivative, on oxygen-glucose deprivation (OGD)-reoxygenation (OGD-R)-induced Aβ production in SH-SY5Y human neuroblastoma cells. Pretreatment of these cells with KHG26702 significantly attenuated OGD-R-induced production of reactive oxygen species and elevation of levels of malondialdehyde, prostaglandin E2, interleukin 6 and glutathione, as well as superoxide dismutase activity. KHG26702 also reduced OGD-R-induced expression of the apoptotic protein caspase-3, the apoptosis regulator Bcl-2, and the autophagy protein becn-1. Finally, KHG26702 reduced OGD-R-induced Aβ production and cleavage of amyloid precursor protein, by inhibiting secretase activity and suppressing the autophagic pathway. Although supporting data from in vivo studies are required, our results indicate that KHG26702 may prevent neuronal cell damage from OGD-R-induced toxicity.
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Affiliation(s)
- A Reum Han
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Ji Woong Yang
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jung-Min Na
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Sung-Woo Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
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Yang SJ, Han AR, Kim EA, Yang JW, Ahn JY, Na JM, Cho SW. KHG21834 attenuates glutamate-induced mitochondrial damage, apoptosis, and NLRP3 inflammasome activation in SH-SY5Y human neuroblastoma cells. Eur J Pharmacol 2019; 856:172412. [PMID: 31129157 DOI: 10.1016/j.ejphar.2019.172412] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/15/2019] [Accepted: 05/22/2019] [Indexed: 12/23/2022]
Abstract
New compounds were screened to develop effective drugs against glutamate-induced toxicity. The present study assessed the effects of the novel thiazole derivative KHG21834 against glutamate-induced toxicity in human neuroblastoma SH-SY5Y cell cultures. Treatment of SH-SY5Y cells with KHG21834 significantly protected cells against glutamate-induced toxicity in a dose-dependent manner, with an optimum concentration of 50 μM. KHG21834 protected SH-SY5Y cells against glutamate toxicity by suppressing glutamate-induced oxidative stress by 50%. KHG21834 also attenuated glutamate-induced mitochondrial membrane potential, ATP level reductions, and intracellular Ca2+ influx. Furthermore, KHG21834 efficiently reduced glutamate-induced ER stress and NLRP3 inflammasome activation (59% and 65% of glutamate group, respectively). In addition, KHG21834 effectively attenuated glutamate-induced levels of Bax, Bcl-2, cleaved caspase-3, p-p38, p-JNK proteins, and TUNEL positive cells. To our knowledge, this is the first study showing that KHG21834 can effectively protect SH-SY5Y cells against glutamate toxicity, suggesting that this compound may be a valuable therapeutic agent for the treatment of glutamate toxicity.
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Affiliation(s)
- Seung-Ju Yang
- Department of Biomedical Laboratory Science, Konyang University, Daejeon, 35365, South Korea
| | - A Reum Han
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Eun-A Kim
- Department of Biomedical Laboratory Science, Konyang University, Daejeon, 35365, South Korea
| | - Ji Woong Yang
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Jee-Yin Ahn
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
| | - Jung-Min Na
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Sung-Woo Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, South Korea.
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A benzothiazole/piperazine derivative with acetylcholinesterase inhibitory activity: Improvement in streptozotocin-induced cognitive deficits in rats. Pharmacol Rep 2017; 69:1349-1356. [DOI: 10.1016/j.pharep.2017.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 05/05/2017] [Accepted: 06/16/2017] [Indexed: 01/12/2023]
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Neuroprotective Role of Atractylenolide-I in an In Vitro and In Vivo Model of Parkinson's Disease. Nutrients 2017; 9:nu9050451. [PMID: 28468332 PMCID: PMC5452181 DOI: 10.3390/nu9050451] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 02/24/2017] [Accepted: 03/20/2017] [Indexed: 12/23/2022] Open
Abstract
Parkinson’s disease (PD) is an age-related neurological disorder characterized by a loss of dopaminergic neurons within the midbrain. Neuroinflammation has been nominated as one of the key pathogenic features of PD. Recently, the inadequate pharmacotherapy and adverse effects of conventional drugs have spurred the development of unconventional medications in the treatment of PD. The purpose of this study is to investigate the anti-neuroinflammatory mechanisms of Atractylenolide-I (ATR-I) in in vivo and in vitro models of PD. Nitrite assay was measured via Griess reaction in lipopolysaccharide (LPS) stimulated BV-2 cells. mRNA and protein levels were determined by a reverse transcription-polymerase chain reaction (RT-PCR) and immunoblot analysis, respectively. Further, flow cytometry, immunocytochemistry, and immunohistochemistry were employed in BV-2 cells and MPTP-intoxicated C57BL6/J mice. Pre-treatment with ATR-I attenuated the inflammatory response in BV-2 cells by abating the nuclear translocation of nuclear factor-κB (NF-κB) and by inducing heme oxygenase-1 (HO-1). The intraperitoneal administration of ATR-I reversed MPTP-induced behavioral deficits, decreased microglial activation, and conferred protection to dopaminergic neurons in the mouse model of PD. Our experimental reports establish the involvement of multiple benevolent molecular events by ATR-I in MPTP-induced toxicity, which may aid in the development of ATR-I as a new therapeutic agent for the treatment of PD.
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Wu WY, Dai YC, Li NG, Dong ZX, Gu T, Shi ZH, Xue X, Tang YP, Duan JA. Novel multitarget-directed tacrine derivatives as potential candidates for the treatment of Alzheimer's disease. J Enzyme Inhib Med Chem 2017; 32:572-587. [PMID: 28133981 PMCID: PMC6009885 DOI: 10.1080/14756366.2016.1210139] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder, which is complex and progressive; it has not only threatened the health of elderly people, but also burdened the whole social medical and health system. The available therapy for AD is limited and the efficacy remains unsatisfactory. In view of the prevalence and expected increase in the incidence of AD, the design and development of efficacious and safe anti-AD agents has become a hotspot in the field of pharmaceutical research. Due to the multifactorial etiology of AD, the multitarget-directed ligands (MTDLs) approach is promising in search for new drugs for AD. Tacrine, which is the first acetylcholinesterase (AChE) inhibitor, has been selected as the ideal active fragment because of its simple structure, clear activity, and its superiority in the structural modification, thus it could be introduced into the overall molecular skeletons of the multi-target-directed anti-AD agents. In this review, we have summarized the recent advances (2012 to the present) in the chemical modification of tacrine, which could provide the reference for the further study of novel multi-target-directed tacrine derivatives to treat AD.
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Affiliation(s)
- Wen-Yu Wu
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Yu-Chen Dai
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Nian-Guang Li
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Ze-Xi Dong
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Ting Gu
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Zhi-Hao Shi
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,c Department of Organic Chemistry , China Pharmaceutical University , Nanjing , Jiangsu , China
| | - Xin Xue
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Yu-Ping Tang
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Jin-Ao Duan
- a Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,b Department of Medicinal Chemistry , Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
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You C, Yu J, Sun Y, Luo Y, Zhang X, Zhu J, Sun B. Enhanced cytotoxicity by a benzothiazole-containing cisplatin derivative in breast cancer cells. NEW J CHEM 2017. [DOI: 10.1039/c6nj02753a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synergic acting cisplatin derivative, made via conjugating CJM126 with cisplatin, was synthesized and delivered using liposomes to inhibit tumor cells.
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Affiliation(s)
- Chaoqun You
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 210089
- P. R. China
| | - Jia Yu
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 210089
- P. R. China
| | - Yu Sun
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 210089
- P. R. China
| | - Yanghui Luo
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 210089
- P. R. China
| | - Xiangyang Zhang
- Laboratory of Organic Chemistry
- ETH Zurich
- 8093 Zurich
- Switzerland
| | - Jin Zhu
- Key Laboratory of Antibody Technique of Ministry of Health
- School of Pathology
- Nanjing Medical University
- Nanjing 210093
- P. R. China
| | - Baiwang Sun
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 210089
- P. R. China
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Demir Özkay Ü, Can ÖD, Sağlık BN, Acar Çevik U, Levent S, Özkay Y, Ilgın S, Atlı Ö. Design, synthesis, and AChE inhibitory activity of new benzothiazole–piperazines. Bioorg Med Chem Lett 2016; 26:5387-5394. [DOI: 10.1016/j.bmcl.2016.10.041] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 01/01/2023]
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Cho CH, Kim EA, Kim J, Choi SY, Yang SJ, Cho SW. N-Adamantyl-4-methylthiazol-2-amine suppresses amyloid β-induced neuronal oxidative damage in cortical neurons. Free Radic Res 2016; 50:678-90. [PMID: 27002191 DOI: 10.3109/10715762.2016.1167277] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recently, we have reported that N-adamantyl-4-methylthiazol-2-amine (KHG26693) successfully reduced the production of oxidative stress in streptozotocin-induced diabetic rats and lipopolysaccharide-induced BV-2 microglial cells by increasing their antioxidant capacity. However, antioxidative effects of KHG26693 against Aβ (Aβ)-induced oxidative stress have not yet been reported. In the present study, we further investigated the antioxidative function of KHG26693 in Aβ-mediated primary cultured cortical neurons. We showed here that KHG26693 attenuated Aβ-induced cytotoxicity, increase of Bax/Bcl-2 ratio, elevation of caspase-3 expression, and impairment of mitochondrial membrane potential in cultured primary cortical neurons. KHG26693 also decreases the Aβ-mediated formation of malondialdehyde, reactive oxygen species, and NO production by decreasing nitric oxide synthase (iNOS) and NADPH oxidase level. Moreover, KHG26693 suppress the Aβ-induced oxidative stress through a possible mechanism involving attenuation of GSH and antioxidant enzyme activities such as glutathione reductase and glutathione peroxidase (GPx). Finally, pretreatment of cortical neurons with KHG26693 significantly reduced the Aβ-induced protein oxidation and nitration. To our knowledge, this is the first report, showing that KHG26693 significantly attenuates Aβ-induced oxidative stress in primary cortical neurons, and may prove attractive strategies to reduce Aβ-induced neural cell death.
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Affiliation(s)
- Chang Hun Cho
- a Department of Biochemistry and Molecular Biology , University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Eun-A Kim
- b Department of Biomedical Laboratory Science , Konyang University , Daejeon , Republic of Korea
| | - Jiae Kim
- a Department of Biochemistry and Molecular Biology , University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Soo Young Choi
- c Department of Biomedical Science and Research Institute for Bioscience and Biotechnology , Hallym University , Chunchon , Republic of Korea
| | - Seung-Ju Yang
- b Department of Biomedical Laboratory Science , Konyang University , Daejeon , Republic of Korea
| | - Sung-Woo Cho
- a Department of Biochemistry and Molecular Biology , University of Ulsan College of Medicine , Seoul , Republic of Korea
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2-Cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride alters lipopolysaccharide-induced proinflammatory cytokines and neuronal morphology in mouse fetal brain. Neuropharmacology 2016; 102:32-41. [DOI: 10.1016/j.neuropharm.2015.10.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 10/01/2015] [Accepted: 10/26/2015] [Indexed: 11/17/2022]
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Bhaskara Reddy MV, Srinivasulu D, Peddanna K, Apparao C, Ramesh P. Synthesis and Antioxidant Activity of New Thiazole Analogues Possessing Urea, Thiourea, and Selenourea Functionality. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1095929] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Kim EA, Cho CH, Kim DW, Choi SY, Huh JW, Cho SW. Antioxidative effects of ethyl 2-(3-(benzo[d]thiazol-2-yl)ureido)acetate against amyloid β-induced oxidative cell death via NF-κB, GSK-3β and β-catenin signaling pathways in cultured cortical neurons. Free Radic Res 2015; 49:411-21. [PMID: 25747393 DOI: 10.3109/10715762.2015.1007048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We have previously shown that 2-(3-(benzo[d]thiazol-2-yl)ureido)acetate (KHG21834) attenuates amyloid beta(Aβ)25-35-induced apoptotic death and shows anti-inflammatory activity against Aβ25-35-induced microglial activation. However, antioxidative effects of KHG21834 against Aβ-induced oxidative stress have not yet been reported. In the present study, we investigated the antioxidative function of KHG21834 in primary cultured cortical neurons, to expand the potential therapeutic efficacy of KHG21834. Pretreatment with KHG21834 protected against Aβ-induced neuronal cell death and mitochondrial damage, and significantly restored GSH levels and the activities of catalase, superoxide dismutase, and glutathione peroxidase, and also suppressed the production of reactive oxygen species and protein oxidation. These results imply that KHG21834 may play a role in cellular defense mechanisms against Aβ-induced oxidative stress in cultured cortical neurons. Furthermore, KHG21834 significantly attenuated the effects of Aβ treatment on levels of NF-κB, β-catenin, and GSK-3β proteins in cortical neurons. Taken together, our results suggest that the antioxidant effects of KHG21834 may result at least in part from its ability to regulate the NF-κB, β-catenin, and GSK-3β signaling pathways. To our knowledge, this is the first report showing that KHG21834 significantly attenuates Aβ25-35-induced oxidative stress in primary cortical neurons, and provides novel insights into KHG21834 as a possible therapeutic agent for the treatment of Aβ-mediated neurotoxicity involving oxidative stress.
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Affiliation(s)
- E-A Kim
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine , Seoul , Korea
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Gill RK, Rawal RK, Bariwal J. Recent advances in the chemistry and biology of benzothiazoles. Arch Pharm (Weinheim) 2015; 348:155-78. [PMID: 25682746 DOI: 10.1002/ardp.201400340] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/28/2014] [Accepted: 12/01/2014] [Indexed: 11/09/2022]
Abstract
Benzothiazole is a privileged heterocyclic scaffold having a benzene ring fused with a five-membered thiazole ring. This moiety has attracted considerable attention because of its wide range of pharmacological activities such as antitubercular, antimicrobial, antimalarial, anticonvulsant, anthelmintic, analgesic, anti-inflammatory, antidiabetic, antitumor activity, etc. In the last few years, some novel benzothiazoles have been developed with varied biological activities. To access this scaffold in high yield and to introduce diversity, a variety of new synthetic methods have been invented. In this review, we highlight the development of novel benzothiazoles for various biological activities along with the best synthetic protocols for their synthesis.
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Affiliation(s)
- Rupinder K Gill
- Department of Pharmaceutical Sciences, ISF College of Pharmacy, Moga, Punjab, India; Research Scholar, Punjab Technical University, Jalandhar, Punjab, India
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Kamal A, Syed MAH, Mohammed SM. Therapeutic potential of benzothiazoles: a patent review (2010 - 2014). Expert Opin Ther Pat 2015; 25:335-49. [PMID: 25579497 DOI: 10.1517/13543776.2014.999764] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Benzothiazole is a versatile fused heterocyclic scaffold with extensive pharmaceutical applications. Several benzothiazole derivatives possess broad spectrum of antimicrobial, analgesic, anti-inflammatory, antidiabetic activities and so on, and the structurally simple 2-arylbenzothiazoles are potential antitumor agents. Some of the compounds containing benzothiazole ring system are in clinical usage for the treatment of various diseases/disorders. AREAS COVERED In the present review, the authors summarize inventions carried out towards the development of benzothiazole-based chemotherapeutic agents. It provides an overview of the patents filed during 2010 - 2014 pertaining to the anticancer, antimicrobial, anti-inflammatory and other biological activities of benzothiazole derivatives. EXPERT OPINION Several molecules containing benzothiazole skeleton are agents of choice for the treatment of various human diseases/disorders. Its versatile character of being capable of serving as ligand to various biomolecules attracted the interest of medicinal chemists for the development of therapies for respective ailments, especially, the 2-arylbenzothiazole moiety which is under development for the treatment of cancer. This signifies the increasing importance of benzothiazole nucleus in the area of drug discovery. Its structural simplicity and ease of synthesis provides scope for the development of chemical libraries that could serve in the discovery of new chemical entities progressing towards the market.
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Affiliation(s)
- Ahmed Kamal
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology , Hyderabad- 500007 , India +91 40 27193157 ; +91 40 27193189 ;
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Guzior N, Wieckowska A, Panek D, Malawska B. Recent development of multifunctional agents as potential drug candidates for the treatment of Alzheimer's disease. Curr Med Chem 2015; 22:373-404. [PMID: 25386820 PMCID: PMC4435057 DOI: 10.2174/0929867321666141106122628] [Citation(s) in RCA: 235] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 09/29/2014] [Accepted: 10/30/2014] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is a complex and progressive neurodegenerative disorder. The available therapy is limited to the symptomatic treatment and its efficacy remains unsatisfactory. In view of the prevalence and expected increase in the incidence of AD, the development of an effective therapy is crucial for public health. Due to the multifactorial aetiology of this disease, the multi-target-directed ligand (MTDL) approach is a promising method in search for new drugs for AD. This review updates information on the development of multifunctional potential anti-AD agents published within the last three years. The majority of the recently reported structures are acetylcholinesterase inhibitors, often endowed with some additional properties. These properties enrich the pharmacological profile of the compounds giving hope for not only symptomatic but also causal treatment of the disease. Among these advantageous properties, the most often reported are an amyloid-β antiaggregation activity, inhibition of β-secretase and monoamine oxidase, an antioxidant and metal chelating activity, NOreleasing ability and interaction with cannabinoid, NMDA or histamine H3 receptors. The majority of novel molecules possess heterodimeric structures, able to interact with multiple targets by combining different pharmacophores, original or derived from natural products or existing therapeutics (tacrine, donepezil, galantamine, memantine). Among the described compounds, several seem to be promising drug candidates, while others may serve as a valuable inspiration in the search for new effective therapies for AD.
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Affiliation(s)
| | | | | | - Barbara Malawska
- Jagiellonian University, Medical College, Chair of Pharmaceutical Chemistry, Department of Physicochemical Drug Analysis, 30-688 Krakow, Medyczna 9, Poland.
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SCM-198 inhibits microglial overactivation and attenuates Aβ(1-40)-induced cognitive impairments in rats via JNK and NF-кB pathways. J Neuroinflammation 2014; 11:147. [PMID: 25134526 PMCID: PMC4156960 DOI: 10.1186/s12974-014-0147-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 08/06/2014] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Neuroinflammation mediated by overactivated microglia plays a key role in many neurodegenerative diseases, including Alzheimer's disease (AD). In this study, we investigated for the first time the anti-neuroinflammatory effects and possible mechanisms of SCM-198 (an alkaloid extracted from Herbaleonuri), which was previously found highly cardioprotective, both in vitro and in vivo. METHODS For in vitro experiments, lipopolysaccharide (LPS) or β-amyloid(1-40) (Aβ(1-40)) was applied to induce microglial overactivation. Proinflammatory mediators were measured and activations of NF-κB and mitogen-activated protein kinases' (MAPKs) pathways were investigated. Further protective effect of SCM-198 was evaluated in microglia-neuron co-culture assay and Sprague-Dawley (SD) rats intrahippocampally-injected with Aβ(1-40). RESULTS SCM-198 reduced expressions of nitric oxide (NO), TNF-α, IL-1β and IL-6 possibly via, at least partially, inhibiting c-Jun N-terminal kinase (JNK) and NF-κB signaling pathways in microglia. Co-culture assay showed that activated microglia pretreated with SCM-198 led to less neuron loss and decreased phosphorylation of tau and extracellular signal-regulated kinase (ERK) in neurons. Besides, SCM-198 also directly protected against Aβ(1-40)-induced neuronal death and lactate dehydrogenase (LDH) release in primary cortical neurons. For in vivo studies, SCM-198 significantly enhanced cognitive performances of rats 12 days after intrahippocampal injections of aged Aβ(1-40) peptides in the Morris water maze (MWM), accompanied by less hippocampal microglial activation, decreased synaptophysin loss and phosphorylation of ERK and tau. Co-administration of donepezil and SCM-198 resulted in a slight cognitive improvement in SD rats 50 days after intrahippocampal injections of aged Aβ(1-40) peptides as compared to only donepezil or SCM-198 treated group. CONCLUSIONS Our findings are the first to report that SCM-198 has considerable anti-neuroinflammatory effects on inhibiting microglial overactivation and might become a new potential drug candidate for AD therapy in the future.
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Manju, Joshi P, Kumar D. Metal complexes of biological active 2-aminothiazole derived ligands. RUSS J COORD CHEM+ 2014. [DOI: 10.1134/s1070328414070069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kim EA, Han AR, Choi J, Ahn JY, Choi SY, Cho SW. Anti-inflammatory mechanisms of N-adamantyl-4-methylthiazol-2-amine in lipopolysaccharide-stimulated BV-2 microglial cells. Int Immunopharmacol 2014; 22:73-83. [PMID: 24975832 DOI: 10.1016/j.intimp.2014.06.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 06/03/2014] [Accepted: 06/10/2014] [Indexed: 01/03/2023]
Abstract
The activation of microglia is crucially associated with the neurodegeneration observed in many neuroinflammatory pathologies, such as multiple sclerosis, Parkinson's disease, and Alzheimer's disease. We have examined various thiazole derivatives with the goal of developing new anti-neuroinflammatory drugs. Thiazole derivatives are attractive candidates for drug development, because they are efficiently synthesized and active against a number of disease organisms and conditions, including neurodegenerative disorders. The present study investigated the effects of a new compound, N-adamantyl-4-methylthiazol-2-amine (KHG26693), against lipopolysaccharide (LPS)-induced inflammation in cultured BV-2 microglial cells. KHG26693 suppressed several inflammatory responses in LPS-activated cells, as evidenced by decreased levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), hydrogen peroxide (H(2)O(2)), reactive oxygen species (ROS), nitric oxide (NO), and lipid peroxidation. These anti-inflammatory/antioxidative actions occurred as a result of the downregulation of NADPH oxidase (NOX), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) content, but not as a result of the upregulation of superoxide dismutase (SOD) or catalase activity. The pharmacological properties of KHG26693 were also facilitated via inhibition of both the cluster of differentiation 14 (CD14)/toll-like receptor 4 (TLR4)-dependent nuclear factor kappa B (NF-κB) signaling pathway and extracellular signal-regulated kinase (ERK) phosphorylation. Furthermore, KHG26693 successfully blocked the migration of LPS-activated microglia, most likely by modulating the ERK pathway. Taken together, these results demonstrate that the anti-inflammatory and antioxidative actions of KHG26693 are mediated, at least in part, through the control of microglial activation.
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Affiliation(s)
- Eun-A Kim
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
| | - A Reum Han
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
| | - Jiyoung Choi
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
| | - Jee-Yin Ahn
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology, Hallym University, Chunchon 200-702, Republic of Korea
| | - Sung-Woo Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea.
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Ha SC, Han AR, Kim DW, Kim EA, Kim DS, Choi SY, Cho SW. Neuroprotective effects of the antioxidant action of 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride against ischemic neuronal damage in the brain. BMB Rep 2014; 46:370-5. [PMID: 23884104 PMCID: PMC4133914 DOI: 10.5483/bmbrep.2013.46.7.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Ischemia is characterized by oxidative stress and changes in the antioxidant defense system. Our recent in vitro study showed that 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride protects cortical astrocytes against oxidative stress. In the current study, we examined the effects of 2-cyclopropylimino-3-methyl- 1,3-thiazoline hydrochloride on ischemia-induced neuronal damage in a gerbil ischemia/reperfusion models. Extensive neuronal death in the hippocampal CA1 area was observed 4 days after ischemia/reperfusion. Intraperitoneal injection of 2-cyclopropylimino- 3-methyl-1,3-thiazoline hydrochloride (0.3 mg/kg body weight) significantly prevented neuronal death in the CA1 region of the hippocampus in response to transient forebrain ischemia. 2-Cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride administration reduced ischemia-induced increases in reactive oxygen species levels and malondialdehyde content. It also attenuated the associated reductions in glutathione level and superoxide dismutase, catalase, and glutathione peroxidase activities. Taken together, our results suggest that 2-cyclopropylimino- 3-methyl-1,3-thiazoline hydrochloride protects against ischemia-induced neuronal damage by reducing oxidative stress through its antioxidant actions.
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Affiliation(s)
- Seung Cheol Ha
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Korea
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Kim EA, Choi J, Han AR, Choi SY, Hahn HG, Cho SW. Anti-oxidative and anti-inflammatory effects of 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride on glutamate-induced neurotoxicity in rat brain. Neurotoxicology 2013; 38:106-14. [DOI: 10.1016/j.neuro.2013.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/04/2013] [Accepted: 07/05/2013] [Indexed: 01/13/2023]
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Keri RS, Quintanova C, Marques SM, Esteves AR, Cardoso SM, Santos MA. Design, synthesis and neuroprotective evaluation of novel tacrine–benzothiazole hybrids as multi-targeted compounds against Alzheimer’s disease. Bioorg Med Chem 2013; 21:4559-69. [DOI: 10.1016/j.bmc.2013.05.028] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 05/09/2013] [Accepted: 05/17/2013] [Indexed: 12/30/2022]
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Sharma PC, Sinhmar A, Sharma A, Rajak H, Pathak DP. Medicinal significance of benzothiazole scaffold: an insight view. J Enzyme Inhib Med Chem 2012; 28:240-66. [PMID: 23030043 DOI: 10.3109/14756366.2012.720572] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Heterocycles bearing nitrogen, sulphur and thiazole moieties constitute the core structure of a number of biologically interesting compounds. Benzothiazole, a group of xenobiotic compounds containing a benzene ring fused with a thiazole ring, are used worldwide for a variety of therapeutic applications. Benzothiazole and their heterocyclic derivatives represent an important class of compounds possessing a wide spectrum of biological activities. The myriad spectrum of medicinal properties associated with benzothiazole related drugs has encouraged the medicinal chemists to synthesize a large number of novel therapeutic agents. Several analogues containing benzothiazole ring system exhibit significant antitumour, antimicrobial, antidiabetic, anti-inflammatory, anticonvulsant, antiviral, antioxidant, antitubercular, antimalarial, antiasthmatic, anthelmintic, photosensitizing, diuretic, analgesic and other activities. This article is an attempt to present the research work reported in recent scientific literature on different pharmacological activities of benzothiazole compounds.
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Özkay ÜD, Can ÖD, Özkay Y, Öztürk Y. Effect of benzothiazole/piperazine derivatives on intracerebroventricular streptozotocin-induced cognitive deficits. Pharmacol Rep 2012; 64:834-47. [DOI: 10.1016/s1734-1140(12)70878-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 03/26/2012] [Indexed: 11/16/2022]
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Han MS, Park CH, Nam KD, Cho SW, Hahn HG. Exploration of Novel Ureidobenzothiazole Library Against Neuroinflammation. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.10.3805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Azam F, Prasad MVV, Thangavel N. Structure-based design, synthesis, and molecular modeling studies of 1-(benzo[d]thiazol-2-yl)-3-(substituted aryl)urea derivatives as novel anti-Parkinsonian agents. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9786-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Kim H, Son HJ, Ha SC, Kim EA, Kim TU, Choi SY, Ahn JY, Cho SW. Neuroprotective effects of 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride against oxidative stress. Cell Mol Neurobiol 2011; 31:979-84. [PMID: 21618048 DOI: 10.1007/s10571-011-9713-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
Abstract
Oxidative stress, glutamate excitotoxicity, and inflammation are the important pathological mechanisms in neurodegenerative diseases. Recently, we reported that 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride protects rat glial cells against glutamate-induced excitotoxicity. In this study, we report the effects of 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride on primary cultured cortical astrocytes after exposure to hydrogen peroxide (H₂O₂). Pretreatment of cells with 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride prior to H₂O₂ exposure attenuated the H₂O₂-induced reductions in cell survival and superoxide dismutase, catalase, glutathione, and glutathione peroxidase activities. It also reduced H₂O₂-induced increases in reactive oxygen species levels, malondialdehyde content, and production of nitric oxide. These effects were all concentration-dependent. Our results suggest that 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride protects against oxidative stress.
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Affiliation(s)
- Hanwook Kim
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Korea
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37
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Multitargeted drugs discovery: Balancing anti-amyloid and anticholinesterase capacity in a single chemical entity. Bioorg Med Chem Lett 2011; 21:2655-8. [DOI: 10.1016/j.bmcl.2010.12.093] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 12/17/2010] [Accepted: 12/20/2010] [Indexed: 01/06/2023]
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Zhang L, Yu H, Zhao X, Lin X, Tan C, Cao G, Wang Z. Neuroprotective effects of salidroside against beta-amyloid-induced oxidative stress in SH-SY5Y human neuroblastoma cells. Neurochem Int 2010; 57:547-55. [PMID: 20615444 DOI: 10.1016/j.neuint.2010.06.021] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Accepted: 06/24/2010] [Indexed: 01/26/2023]
Abstract
Beta-amyloid (Abeta) peptide, the hallmark of Alzheimer's disease (AD), invokes a cascade of oxidative damages to neurons and eventually leads to neuronal death. In this study, salidroside (Sald), an active compound isolated from a traditional Chinese medicinal plant, Rhodiola rosea L., was investigated to assess its protective effects and the underlying mechanisms against Abeta-induced oxidative stress in SH-SY5Y human neuroblastoma cells. Abeta(25-35)-induced neuronal toxicity was characterized by the decrease of cell viability, the release of lactate dehydrogenase (LDH), morphological alterations, neuronal DNA condensation, and the cleavage of poly(ADP-ribose) polymerase (PARP) by activated caspase-3. Pretreatment with salidroside markedly attenuated Abeta(25-35)-induced loss of cell viability and apoptosis in a dose-dependent manner. The mechanisms of salidroside protected neurons from oxidative stress included the induction of antioxidant enzymes, thioredoxin (Trx), heme oxygenase-1 (HO-1), and peroxiredoxin-I (PrxI); the downregulation of pro-apoptotic protein Bax and the upregulation of anti-apoptotic protein Bcl-X(L). Furthermore, salidroside dose-dependently restored Abeta(25-35)-induced loss of mitochondrial membrane potential (MMP) as well as suppressed the elevation of intracellular reactive oxygen species (ROS) level. It was also observed that Abeta(25-35) stimulated the phosphorylation of mitogen-activated protein (MAP) kinases, including c-Jun NH(2)-terminal kinase (JNK) and p38 MAP kinase, but not extracellular signal-regulated kinase1/2 (ERK1/2). Salidroside inhibited Abeta(25-35)-induced phosphorylation of JNK and p38 MAP kinase, but not ERK1/2. These results suggest that salidroside has protective effects against Abeta(25-35)-induced oxidative stress, which might be a potential therapeutic agent for treating or preventing neurodegenerative diseases.
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Affiliation(s)
- Li Zhang
- Jiangsu Institute of Nuclear Medicine, Key Laboratory of Nuclear Medicine, Ministry of Health, Wuxi, Jiangsu, China
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Kim EA, Kim H, Ahn JY, Hahn HG, Kim KS, Kim TU, Cho SW. Suppression of lipopolysaccharide-induced microglial activation by a benzothiazole derivative. Mol Cells 2010; 30:51-7. [PMID: 20652495 DOI: 10.1007/s10059-010-0087-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/11/2010] [Accepted: 03/25/2010] [Indexed: 12/28/2022] Open
Abstract
We previously reported that KHG21834, a benzothiazole derivative, attenuates the beta-amyloid (Abeta)-induced degeneration of both cortical and mesencephalic neurons in vitro. Central nervous system inflammation mediated by activated microglia is a key event in the development of neurodegenerative disease. In this study, we show that KHG21834 suppresses inflammation-mediated cytokine upregulation. Specifically, KHG21834 induces significant reductions in the lipopolysaccharide-induced activation of microglia and production of proinflammatory mediators such as tumor necrosis factor-alpha, interlukin-1beta, nitric oxide, and inducible nitric oxide synthase. In addition, KHG21834 blocks the expression of mitogen-activated protein kinases, including ERK, p38 MAPK, JNK, and Akt. In vivo intracerebroventricular infusion of KHG21834 also leads to decreases the level of interleukin-1beta and tumor necrosis factor-alpha in brain. These results, in combination with our previous findings on Abeta-induced degeneration, support the potential therapeutic efficacy of KHG21834 for the treatment of neurodegenerative disorders via the targeting of key glial activation pathways.
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Affiliation(s)
- Eun-A Kim
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 138-736, Korea
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Kim EA, Hahn HG, Kim TU, Choi SY, Cho SW. Attenuation of β-amyloid-induced neuroinflammation by KHG21834 in vivo. BMB Rep 2010; 43:413-8. [DOI: 10.5483/bmbrep.2010.43.6.413] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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41
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Designed Short Peptides that Form Amyloid-Like Fibrils in Coassembly with Amyloid β-Peptide (Aβ) Decrease the Toxicity of Aβ to Neuronal PC12 Cells. Chembiochem 2010; 11:1525-30. [DOI: 10.1002/cbic.201000181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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42
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Suppression of glutamate-induced excitotoxicity by 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride in rat glial cultures. Cell Mol Neurobiol 2010; 30:807-15. [PMID: 20198420 DOI: 10.1007/s10571-010-9508-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Accepted: 02/15/2010] [Indexed: 01/22/2023]
Abstract
We have screened new drugs with a view to developing effective drugs against glutamate-induced excitotoxicity. In the present work, we show effects of a new drug, 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride against glutamate-induced excitotoxicity in primary rat glial cultures. Pretreatment of glial cells with 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride for 2 h significantly protected glial cells against glutamate-induced excitotoxicity in a time- and dose-dependent manner with an optimum concentration of 100 microM. The drug significantly reduced production of proinflammatory cytokines, tumor necrosis factor-alpha, and interlukin-1beta in glutamate-induced excitotoxicity. The drug also prevented glutamate-induced intracellular Ca2+ influx and reduced the subsequent overproduction of nitric oxide and reactive oxygen species. Furthermore, the drug preserved the mitochondrial potential and inhibited the overproduction of cytochrome c. In addition, the drug effectively attenuated the protein level changes of beta-catenin and glycogen synthase kinase-3beta. These results suggest that 2-cyclopropylimino-3-methyl-1,3-thiazoline hydrochloride effectively protected primary cultures of rat glial cells against glutamate-induced excitotoxicity.
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Guo F, Jing W, Ma CG, Wu MN, Zhang JF, Li XY, Qi JS. [Gly(14)]-humanin rescues long-term potentiation from amyloid beta protein-induced impairment in the rat hippocampal CA1 region in vivo. Synapse 2010; 64:83-91. [PMID: 19768812 DOI: 10.1002/syn.20707] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The novel neuroprotective action of Humanin (HN), especially its derivative [Gly(14)]-humanin (HNG), against Alzheimer's disease (AD)-related insults has been reported. However, it is still short of electrophysiological evidence for the protection of HN on synaptic plasticity, and the molecular mechanisms that underlie the neuroprotective function of HN remain largely unknown. The present study examined the effects of intracerebroventricular (i.c.v.) injection of HNG on amyloid beta (Abeta), a main constituent of senile plaques in the AD brain, induced suppression of long-term potentiation (LTP) in the rat hippocampal CA1 region in vivo and investigated the possible mechanism of HNG in LTP protection. We found that application of Abeta fragments 25-35 (Abeta25-35) and 31-35 (Abeta31-35) significantly inhibited high frequency stimulation-induced LTP, while HNG effectively prevented the suppression of LTP induced by Abeta fragments in a dose-dependent manner. After pretreatment with Genistein, a tyrosine kinase inhibitor, the protective action of HNG on LTP was nearly completely abolished. Therefore, the present study demonstrated for the first time that HNG could protect against the neurotoxic Abeta-induced hippocampal LTP impairment and the tyrosine kinase pathway was involved in the neuroprotective action of HNG, suggesting that HNG might be one of the promising candidates for the treatment of AD in the future.
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Affiliation(s)
- Fen Guo
- Department of Neurobiology, Key Laboratory for Cellular Physiology of Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
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Synthesis and identification of a new class of (S)-2,6-diamino-4,5,6,7-tetrahydrobenzo[d]thiazole derivatives as potent antileukemic agents. Invest New Drugs 2009; 28:454-65. [DOI: 10.1007/s10637-009-9276-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Accepted: 05/22/2009] [Indexed: 11/26/2022]
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Apoptosis induced by 2-acetyl-3-(6-methoxybenzothiazo)-2-yl-amino-acrylonitrile in human leukemia cells involves ROS-mitochondrial mediated death signaling and activation of p38 MAPK. Cancer Lett 2008; 277:55-63. [PMID: 19108948 DOI: 10.1016/j.canlet.2008.11.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 11/04/2008] [Accepted: 11/17/2008] [Indexed: 11/22/2022]
Abstract
Benzothiazoles are multitarget agents with broad spectrum of biological activity. 2-Acetyl-3-(6-methoxybenzothiazo)-2-yl-amino-acrylonitrile (AMBAN) is a new synthetically prepared derivative, which in our previous study showed cytotoxic effects towards tumor cells. The aim of the present study was to examine the antiproliferative and apoptosis inducing activities of AMBAN towards human leukemia HL60 and U937 cells. Further, the molecular mechanism involved in AMBAN-induced apoptosis was investigated. Benzothiazole inhibited the growth and induced programmed cell death of HL60 and U937 cells. In addition, AMBAN elevated the level of reactive oxygen species, decreased the mitochondrial membrane potential, activated caspases 9 and 3, induced the cytochrome c release and PARP cleavage and led to intranucleosomal DNA fragmentation. Further, p38 MAPK was associated with the apoptotic activity of AMBAN. It can be concluded that AMBAN-induced apoptosis in HL60 and U937 cells through mitochondrial/caspase 9/caspase 3-dependent pathway.
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Azam F. Synthesis of some urea and thiourea derivatives of naphtha[1,2-d]thiazol-2-amine as anti-Parkinsonian agents that cause neuroprotection against haloperidol-induced oxidative stress in mice. Med Chem Res 2008. [DOI: 10.1007/s00044-008-9127-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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47
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Sun KH, de Pablo Y, Vincent F, Shah K. Deregulated Cdk5 promotes oxidative stress and mitochondrial dysfunction. J Neurochem 2008; 107:265-78. [PMID: 18691386 DOI: 10.1111/j.1471-4159.2008.05616.x] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxidative stress is one of the earliest events in Alzheimer's disease (AD). A chemical genetic screen revealed that deregulated cyclin-dependent kinase 5 (Cdk5) may cause oxidative stress by compromising the cellular anti-oxidant defense system. Using novel Cdk5 modulators, we show the mechanism by which Cdk5 can induce oxidative stress in the disease's early stage and cell death in the late stage. Cdk5 dysregulation upon neurotoxic insults results in reactive oxygen species (ROS) accumulation in neuronal cells because of the inactivation of peroxiredoxin I and II. Sole temporal activation of Cdk5 also increases ROS, suggesting its major role in this process. Cdk5 inhibition rescues mitochondrial damage upon neurotoxic insults, thereby revealing Cdk5 as an upstream regulator of mitochondrial dysfunction. As mitochondrial damage results in elevated ROS and Ca(2+) levels, both of which activate Cdk5, we propose that a feedback loop occurs in late stage of AD and leads to cell death (active Cdk5 --> ROS --> excess ROS --> mitochondrial damage --> ROS --> hyperactive Cdk5 --> severe oxidative stress and cell injury --> cell death). Cdk5 inhibition upon neurotoxic insult prevents cell death significantly, supporting this hypothesis. As oxidative stress and mitochondrial dysfunction play pivotal roles in promoting neurodegeneration, Cdk5 could be a viable therapeutic target for AD.
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Affiliation(s)
- Kai-Hui Sun
- Department of Chemistry and Purdue Cancer Center, Purdue University, West Lafayette, IN 47907, USA
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