1
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Kumar N, Gupta P, Bansal S. Progress and Development of Carbazole Scaffold Based as Potential Anti-
Alzheimer Agents Using MTDL Approach. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666220314144219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Alzheimer’s is a neurodegenerative disease (NDs) found in old age people with associated
most common symptom dementia. MTDLs (Multi-Target Direct Ligand strategy) is based on a combination
of two or more bioactive pharmacophores into a single molecule and this phenomenon has received a
great attention in the new era of modern drug discovery and emerging as a choice to treat this complex
Alzheimer’s disease (AD). In last fifteen years, many research groups designed, and synthesized new
carbazole integrated molecules linked with other bioactive pharmacophores like thiazoles, carvedilol, α-
naphthylaminopropan-2-ol, tacrine, ferulic acid, piperazine, coumarin, chalcones, stilbene, benzyl piperidine,
adamantane, quinoline, phthalocyanines, α-amino phosphonate, thiosemicarbazones, hydrazones,
etc. derivatives using MTDLs approach to confront AD. The present review entails the scientific data on
carbazole hybrids as potential Anti-Alzheimer activities from 2007 to 2021 that have shown potential
anti-Alzheimer activities through multiple target pathways thereby promising hope for new drug development
to confront AD.
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Affiliation(s)
- Nitin Kumar
- School of Medical and Allied Sciences (SMAS), K.R. Mangalam University, Sohna road, Gurugram, Haryana, India
- Sanskar College of Pharmacy and Research (SCPR), NH-24, Ahead Masuri Canal, Ghaziabad 201302, India
| | - Pankaj Gupta
- School of Medical and Allied Sciences (SMAS), K.R. Mangalam University, Sohna road, Gurugram, Haryana, India
| | - Sahil Bansal
- School of Medical and Allied Sciences (SMAS), K.R. Mangalam University, Sohna road, Gurugram, Haryana, India
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2
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Krawczyk P, Kula S, Seklecka K, Łączkowski KZ. Synthesis, electrochemical, optical and biological properties of new carbazole derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120497. [PMID: 34695676 DOI: 10.1016/j.saa.2021.120497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 10/04/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
Carbazole skeleton is the key structural motif of many biologically active compounds including synthetic and natural products. Based on the (E)-2-(2-(4-9H-carbazol-9-yl)benzylidene) hydrazinyl)thiazole as skeleton, three novel carbazole dyes were synthesized. The scientific analysis includes the effect of changing the strength of the activating substituents and their exchange for the deactivating substituent on the chemical and biological properties. The presented research showed a significant influence of the CH3, OCH3 and CH2COOC2H5 groups on the spectral properties of the tested derivatives. Their significant influence is also visible in electrochemical, nonlinear-optic and biological properties. The study also included the analysis of the use of the presented derivatives as potential fluorescent probes for in vivo and in vitro tests. Quantum-chemical calculations complement the conducted experiments.
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Affiliation(s)
- Przemysław Krawczyk
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland.
| | - Sławomir Kula
- Institute of Chemistry, Faculty of Science and Technology, University of Silesia, Szkolna 9 St., 40-007 Katowice, Poland
| | - Klaudia Seklecka
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Chemical Technology and Pharmaceuticals, Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Krzysztof Z Łączkowski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Chemical Technology and Pharmaceuticals, Jurasza 2, 85-089 Bydgoszcz, Poland
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3
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Avram S, Udrea AM, Nuta DC, Limban C, Balea AC, Caproiu MT, Dumitrascu F, Buiu C, Bordei AT. Synthesis and Bioinformatic Characterization of New Schiff Bases with Possible Applicability in Brain Disorders. Molecules 2021; 26:molecules26144160. [PMID: 34299440 PMCID: PMC8307098 DOI: 10.3390/molecules26144160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 01/11/2023] Open
Abstract
(1) Background: The research aims to find new treatments for neurodegenerative diseases, in particular, Alzheimer’s disease. (2) Methods: This article presents a bioinformatics and pathology study of new Schiff bases, (EZ)-N′-benzylidene-(2RS)-2-(6-chloro-9H-carbazol-2-yl)propanehydrazide derivatives, and aims to evaluate the drug-like, pharmacokinetic, pharmacodynamic and pharmacogenomic properties, as well as to predict the binding to therapeutic targets by applying bioinformatics, cheminformatics and computational pharmacological methods. (3) Results: We obtained these Schiff bases by condensing (2RS)-2-(6-chloro-9H-carbazol-2-yl)propanehydrazide with aromatic aldehydes, using the advantages of microwave irradiation. The newly synthesized compounds were characterized spectrally, using FT-IR and NMR spectroscopy, which confirmed their structure. Using bioinformatics tools, we noticed that all new compounds are drug-likeness features and may be proposed as potentially neuropsychiatric drugs (4) Conclusions: Using bioinformatics tools, we determined that the new compound 1e had a high potential to be used as a good candidate in neurodegenerative disorders treatment.
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Affiliation(s)
- Speranta Avram
- Department of Anatomy, Animal Physiology, and Biophysics, Faculty of Biology, University of Bucharest, 36-46 M. Kogălniceanu Boulevard, 050107 Bucharest, Romania
| | - Ana Maria Udrea
- National Institute of Laser, Plasma and Radiation Physics, 409 Atomistilor Str., 077125 Magurele, Romania
| | - Diana Camelia Nuta
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania
| | - Adrian Cosmin Balea
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania
| | - Miron Teodor Caproiu
- The Organic Chemistry Center of Romanian Academy "C. D. Neniţescu", Splaiul Independenţei 202B, 060023 Bucharest, Romania
| | - Florea Dumitrascu
- The Organic Chemistry Center of Romanian Academy "C. D. Neniţescu", Splaiul Independenţei 202B, 060023 Bucharest, Romania
| | - Cătălin Buiu
- Department of Automatic Control and Systems Engineering, Politehnica University of Bucharest, Spl. Independenţei 313, 060042 Bucharest, Romania
| | - Alexandra Teodora Bordei
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania
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4
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Effect of the Chloro-Substitution on Electrochemical and Optical Properties of New Carbazole Dyes. MATERIALS 2021; 14:ma14113091. [PMID: 34200060 PMCID: PMC8200205 DOI: 10.3390/ma14113091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/21/2021] [Accepted: 05/31/2021] [Indexed: 11/21/2022]
Abstract
Carbazole derivatives are the structural key of many biologically active substances, including naturally occurring and synthetic ones. Three novel (E)-2-(2-(4-9H-carbazol-9-yl)benzylidene)hydrazinyl)triazole dyes were synthesized with different numbers of chlorine substituents attached at different locations. The presented research has shown the influence of the number and position of attachment of chlorine substituents on electrochemical, optical, nonlinear, and biological properties. The study also included the analysis of the use of the presented derivatives as potential fluorescent probes for in vivo and in vitro tests. Quantum-chemical calculations complement the conducted experiments.
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5
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Alkahtane AA, Alghamdi HA, Almutairi B, Khan MM, Hasnain MS, Abdel-Daim MM, Alghamdi WM, Alkahtani S. Inhibition of human amylin aggregation by Flavonoid Chrysin: An in-silico and in-vitro approach. Int J Med Sci 2021; 18:199-206. [PMID: 33390788 PMCID: PMC7738956 DOI: 10.7150/ijms.51382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 10/16/2020] [Indexed: 12/11/2022] Open
Abstract
Islet amyloid polypeptide (amylin), consecrated by the pancreatic β-cells with insulin, has a significant role to play in maintaining homeostasis of islet cell hormones. Alzheimer's disease is the predominant source of dementia. However, its etiology remains uncertain; it appears that type 2 diabetes mellitus and other prediabetic states of insulin resistance contribute to the intermittent Alzheimer's disease presence. Amylin is abnormally elevated in Type II diabetes patients, accumulated into amylin aggregates, and ultimately causes apoptosis of the β-cells, and till date, its mechanism remains unclear. Several flavonoids have inhibitory effects on amylin amyloidosis, but its inhibition mechanisms are unknown. Screening a collection of traditional compounds revealed the flavone Chrysin, a potential lead compound. Chrysin inhibits amyloid aggregate formation according to Thioflavin T binding, turbidimetry assay. We report results of molecular interaction analysis of Chrysin with amylin which shows potent binding affinity against amylin. Pharmacokinetics and Drug likeness studies of Chrysin also suggest that it is a potential lead compound. Therefore, Chrysin prevented amylin aggregation.
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Affiliation(s)
- Abdullah A Alkahtane
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Hamzah A Alghamdi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Bader Almutairi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohd Muazzam Khan
- Department of Pharmacology, Faculty of Pharmacy, Integral University, Lucknow, India
| | - Md Saquib Hasnain
- Department of Pharmacy, Shri Venkateshwara University, NH-24, Rajabpur, Gajraula, Amroha - 244236, U.P., India
| | - Mohamed M Abdel-Daim
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.,Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Wadha M Alghamdi
- Medical Services at the Ministry of Interior, Riyadh, Saudi Arabia
| | - Saad Alkahtani
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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6
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Patel DV, Patel NR, Kanhed AM, Teli DM, Patel KB, Joshi PD, Patel SP, Gandhi PM, Chaudhary BN, Prajapati NK, Patel KV, Yadav MR. Novel carbazole-stilbene hybrids as multifunctional anti-Alzheimer agents. Bioorg Chem 2020; 101:103977. [PMID: 32485470 DOI: 10.1016/j.bioorg.2020.103977] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 05/20/2020] [Accepted: 05/24/2020] [Indexed: 01/03/2023]
Abstract
Molecules capable of engaging with multiple targets associated with pathological condition of Alzheimer's disease have proved to be potential anti-Alzheimer's agents. In our goal to develop multitarget-directed ligands for the treatment of Alzheimer's disease, a novel series of carbazole-based stilbene derivatives were designed by the fusion of carbazole ring with stilbene scaffold. The designed compounds were synthesized and evaluated for their anti-AD activities including cholinesterase inhibition, Aβ aggregation inhibition, antioxidant and metal chelation properties. Amongst them, (E)-1-(4-(2-(9-ethyl-9H-carbazol-3-yl)vinyl)phenyl)-3-(2-(pyrrolidin-1-yl)ethyl)thiourea (50) appeared to be the best candidate with good inhibitory activities against AChE (IC50 value of 2.64 μM) and BuChE (IC50 value of 1.29 μM), and significant inhibition of self-mediated Aβ1-42 aggregation (51.29% at 25 μM concentration). The metal chelation study showed that compound (50) possessed specific copper ion chelating property. Additionally, compound (50) exhibited moderate antioxidant activity. To understand the binding mode of 50, molecular docking studies were performed, and the results indicated strong non-covalent interactions of 50 with the enzymes in the active sites of AChE, BuChE as well as of the Aβ1-42 peptide. Additionally, it showed promising in silico ADMET properties. Putting together, these findings evidently showed compound (50) as a potential multitarget-directed ligand in the course of developing novel anti-AD drugs.
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Affiliation(s)
- Dushyant V Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Nirav R Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Ashish M Kanhed
- Shobhaben Pratapbhai Patel - School of Pharmacy & Technology Management, SVKM's NMIMS University, Vile Parle, Mumbai 400056, India
| | - Divya M Teli
- Department of Pharmaceutical Chemistry, L. M. College of Pharmacy, Navrangpura, Ahmedabad 380009, Gujarat, India
| | - Kishan B Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Prashant D Joshi
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Sagar P Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Pallav M Gandhi
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Bharat N Chaudhary
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Navnit K Prajapati
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Kirti V Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Mange Ram Yadav
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India.
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7
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Kıpçak F, Tok TT, Duyar H, Seferoğlu Z, Gökoğlu E. Synthesis of new morpholine containing 3-amido-9-ethylcarbazole derivative and studies on its biophysical interactions with calf thymus DNA/HSA. J Biomol Struct Dyn 2020; 39:1561-1571. [PMID: 32093548 DOI: 10.1080/07391102.2020.1734093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In this work, we presented the synthesis and investigation of binding properties of the new morpholine containing 3-amido-9-ethylcarbazole derivative (CMR) to calf thymus DNA (ctDNA) and human serum albumin (HSA) by fluorescence spectroscopy, UV absorption spectroscopy and molecular docking method. A decrease in Stern-Volmer constants was obtained with increase in temperature; it shows that static quenching mechanism leads to formation of new CMR-DNA/HSA complexes, which have hydrophobic interaction as the predominant role in the binding modes. Also, binding properties of DNA were investigated with competition assays on two probes (EB and H33258) by absorption, ionic strength and iodide ion quenching methods. The results suggested that CMR entered into the minor groove binding on the A-T region of DNA. The spectral data further confirmed by molecular docking which elicited that CMR complexes have similar interaction and conformation trends to each target, DNA and HSA. The experimental and computational results show that CMR has been classified as a promising molecule in drug designing of other carbazole derivatives.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fulya Kıpçak
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Tugba Taskın Tok
- Department of Chemistry, Gaziantep University, Gaziantep, Turkey.,Department of Bioinformatics and Computational Biology, Gaziantep University, Gaziantep, Turkey
| | - Halil Duyar
- Department of Chemistry, Gebze Technical University, Kocaeli, Turkey.,Department of Chemistry, Gazi University, Ankara, Turkey
| | | | - Elmas Gökoğlu
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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8
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Pandey V, Rather H, Yadav S, Vasita R, Gupta I. Synthesis and biological studies of amphiphilic carbazole pyridinium conjugates. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619501384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Amphiphilic carbazole pyridinium conjugates are synthesized and characterized by IR, 1H and [Formula: see text]C NMR and ESI-MS spectrometry. The pyridinium group is attached on the 3-position of the carbazole ring and long alkyl chains are linked to the central [Formula: see text] atom. The introduction of a pyridinium group afforded water-soluble carbazole derivatives with significant bathochromic shifts in their absorption and emission spectra. As compared to the parent [Formula: see text]-butylcarbazole compound, carbazole pyridinium conjugates exhibited 50 nm red-shifted absorption maxima. Similarly, the carbazole pyridinium conjugates displayed 143–147 nm red-shifted emission maxima in solution. In addition, large Stokes shifts (5747–7558 cm[Formula: see text] were observed for the conjugates in solution. The cell penetrable amphiphilic carbazole pyridinium conjugates exhibited cytoplasmic distribution in A549 cells.
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Affiliation(s)
- Vijayalakshmi Pandey
- Indian Institute of Technology Gandhinagar, Palaj Campus, Gandhinagar, Gujarat-382355, India
| | - Hilal Rather
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382 030, India
| | - Sarla Yadav
- Indian Institute of Technology Gandhinagar, Palaj Campus, Gandhinagar, Gujarat-382355, India
| | - Rajesh Vasita
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382 030, India
| | - Iti Gupta
- Indian Institute of Technology Gandhinagar, Palaj Campus, Gandhinagar, Gujarat-382355, India
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9
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Rafique H, Saeed A, Perveen F, Kausar N, Ashraf Z, Akram S, Zafar MN, Tayyab M, Flörke U. Design, Synthesis, Crystal Structure, Fluorescence, Molecular Docking and DFT Studies of 3,6-Dinitro-N-octylcarbazole. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190819094100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Carbazole derivatives have extensive π–conjugation due to which they are excellent
organic electronics and show semiconducting properties. Carbazole-based various
materials are important candidates due to their excellent redox and luminescent properties
and good thermal and environmental stability, therefore, carbzole nucleus was chosen for
exploring these properties. The title compound was recrystallized from a methanol solution
in orthorhombic space group P 212121 with unit cell dimensions a = 9.663(2), b =
10.764(3), c =18.139(4), V= 1886.7(7) Å3, Z=4. Density functional theory (DFT) calculations
have been carried out for the title compound using the 6-31G(d) basis set. The calculated
results showed that the theoretically predicted geometry can well reproduce the experimentally
calculated structural parameters.
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Affiliation(s)
- Hummera Rafique
- Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Fouzia Perveen
- Research Centre for Modelling and Simulations (RCMS), NUST, H-12 Campus, Islamabad, Pakistan
| | - Naghmana Kausar
- Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
| | - Zaman Ashraf
- Department of Chemistry, Allama Iqbal Open University, Islamabad, Pakistan
| | - Sadia Akram
- Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
| | | | - Muhammad Tayyab
- Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
| | - Ulrich Flörke
- Anorganische und Analytische Chemie, Universitat Paderborn, Warburgerstr. 100, D-33098, Paderborn, Germany
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10
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Kumar S, Kumar S, Ram H. Anti-Aggregation Property of Allicin by In Vitro and Molecular Docking Studies. J Exp Neurosci 2019; 13:1179069519866185. [PMID: 31384132 PMCID: PMC6664621 DOI: 10.1177/1179069519866185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/05/2019] [Indexed: 11/16/2022] Open
Abstract
Amyloidogenesis is the process in which amyloid beta (Aβ) peptide aggregation
results in plaque formation in central nervous system (CNS) are associated with
many neurological diseases such as Alzheimer’s disease. The peptide aggregation
initiated from peptide monomers results in formation of dimers, tetramers,
fibrils, and protofibrils. The ability of allicin, a lipid-soluble volatile
organosulfur biological compound, present in freshly crushed garlic
(Allium sativum L.) to inhibit fibril formation by the Aβ
peptide in vitro was investigated in the present study. Inhibition of
fibrillogenesis was measured by a Thioflavin T (ThT) fluorescence assay and
visualized by transmission electron microscopy (TEM). The molecular interaction
between allicin and Aβ peptide was also demonstrated by in silico studies. The
results show that allicin strongly inhibited Aβ fibrils by 97% at 300 µM,
compared with control (Aβ only) (P < .001). These results
were further validated by visual of fibril formation by transmission microscopy
and molecular interaction of amyloid peptide with allicin by molecular docking.
Aβ forms favourable hydrophobic interaction with Ile32, Met35, Val36, and Val39,
and oxygen of allicin forms hydrogen bond with the amino acid residue Lys28.
Allicin anti-amyloidogenic property suggests that this naturally occurring
compound may have potential to ameliorate and prevent Alzheimer’s disease.
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Affiliation(s)
- Suresh Kumar
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Dwarka, India
| | - Shivani Kumar
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Dwarka, India
| | - Heera Ram
- Department of Zoology, Jai Narain Vyas University, Jodhpur, India
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11
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Practical Microwave Synthesis of Carbazole Aldehydes for the Development of DNA-Binding Ligands. Molecules 2019; 24:molecules24050965. [PMID: 30857275 PMCID: PMC6429063 DOI: 10.3390/molecules24050965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/25/2019] [Accepted: 03/06/2019] [Indexed: 01/28/2023] Open
Abstract
Microwave formylation of carbazole derivatives was investigated and 3-monoaldehydes were obtained in high yield. A potential DNA-binding ligand, 3-[(3-ethyl)-2-vinylbenzothiazolium]-9-N-ethyl carbazole iodide, was synthesized and characterized including spectral properties (UV-Vis absorption and fluorescence spectra). The binding selectivity and affinity of three carbazole ligands for double-stranded and G-quadruplex DNA structures were studied using a competitive dialysis method in sodium- and potassium-containing buffer solutions.
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12
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Głuszyńska A, Juskowiak B, Kuta-Siejkowska M, Hoffmann M, Haider S. Carbazole ligands as c-myc G-quadruplex binders. Int J Biol Macromol 2018; 114:479-490. [DOI: 10.1016/j.ijbiomac.2018.03.135] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/16/2018] [Accepted: 03/21/2018] [Indexed: 10/24/2022]
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13
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Głuszyńska A, Juskowiak B, Kuta-Siejkowska M, Hoffmann M, Haider S. Carbazole Derivatives' Binding to c-KIT G-Quadruplex DNA. Molecules 2018; 23:E1134. [PMID: 29747481 PMCID: PMC6099540 DOI: 10.3390/molecules23051134] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 04/25/2018] [Accepted: 05/07/2018] [Indexed: 11/17/2022] Open
Abstract
The binding affinities of three carbazole derivatives to the intramolecular G-quadruplex (GQ) DNA formed by the sequence 5′-AGGGAGGGCGCTGGGAGGAGGG-3′, derived from the c-KIT 1 oncogene region, were investigated. All carbazole cationic ligands that differed in the substituents on the nitrogen atom were able to stabilize G-quadruplex, as demonstrated using UV-Vis, fluorescence and CD spectroscopic techniques as well as molecular modeling. The spectrophotometric titration results showed spectral features characteristic of these ligands-bathochromic shifts and initial hypochromicity followed by hyperchromicity at higher GQ concentrations. All free carbazole ligands exhibited modest fluorescent properties, but after binding to the DNA the fluorescence intensity increased significantly. The binding affinities of carbazole ligands to the c-KIT 1 DNA were comparable showing values in the order of 10⁵ M−1. Molecular modeling highlights the differences in interactions between each particular ligand and studied G-quadruplex, which potentially influenced binding strength. Obtained results relevant that all three investigated ligands have stabilization properties on studied G-quadruplex.
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Affiliation(s)
- Agata Głuszyńska
- Laboratory of Bioanalytical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska Street 89b, 61-614 Poznań, Poland.
| | - Bernard Juskowiak
- Laboratory of Bioanalytical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska Street 89b, 61-614 Poznań, Poland.
| | - Martyna Kuta-Siejkowska
- Laboratory of Quantum Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska Street 89b, 61-614 Poznań, Poland.
| | - Marcin Hoffmann
- Laboratory of Quantum Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska Street 89b, 61-614 Poznań, Poland.
| | - Shozeb Haider
- School of Pharmacy, University College London, London WC1N 1AX, UK.
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Bello I, Salerno M. Evidence against a role of P-glycoprotein in the clearance of the Alzheimer's disease Aβ1-42 peptides. Cell Stress Chaperones 2015; 20:421-30. [PMID: 25591827 PMCID: PMC4406933 DOI: 10.1007/s12192-014-0566-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/27/2014] [Accepted: 12/22/2014] [Indexed: 10/24/2022] Open
Abstract
It has been proposed that the amyloid-β peptides (Aβ) cause the neuronal degeneration in the Alzheimer's disease brain. An imbalance between peptide production at the neuronal level and their elimination across the blood-brain-barrier (BBB) results in peptide accumulation inside the brain. The identification and functional characterization of the transport systems in the BBB with the capacity to transport Aβ is crucial for the understanding of Aβ peptide traffic from the brain to the blood. In this context, it has been suggested that the P-glycoprotein (P-gp), expressed in endothelial cells of the BBB, plays a role in the elimination of Aβ. However, there is little, if any, experimental evidence to support this; therefore, the aim of this investigation was to determine whether P-gp is capable of transporting Aβ peptides. Our results show that ATPase activity measured in plasma membrane vesicles of K562 cells overexpressing P-gp is not increased by the presence of Aβ42, suggesting that Aβ42 is not a P-gp substrate. Similarly, P-gp of pirarubicin was unaffected by Aβ42. Moreover, the overexpression of P-gp does not protect cells against Aβ42 toxicity. Taken together, our results support the conclusion that Aβ42 is not transported by P-gp.
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Affiliation(s)
- Ivan Bello
- Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), UFR-SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny, France
| | - Milena Salerno
- Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), UFR-SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny, France
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15
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Biological potential of carbazole derivatives. Eur J Med Chem 2015; 94:405-26. [DOI: 10.1016/j.ejmech.2015.02.059] [Citation(s) in RCA: 167] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 02/19/2015] [Accepted: 02/28/2015] [Indexed: 11/21/2022]
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16
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N-alkyl carbazole derivatives as new tools for Alzheimer's disease: preliminary studies. Molecules 2014; 19:9307-17. [PMID: 24991761 PMCID: PMC6271900 DOI: 10.3390/molecules19079307] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 06/12/2014] [Accepted: 06/24/2014] [Indexed: 11/16/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive and age-related neurodegenerative disorder affecting brain cells and is the most common form of "dementia", because of the cognitive detriment which takes place. Neuronal disruption represents its major feature, due to the cytosolic accumulation of amyloid β-peptide (Aβ) which leads to senile plaques formation and intracellular neurofibrillary tangles. Many studies have focused on the design and therapeutic use of new molecules able to inhibit Aβ aggregation. In this context, we evaluated the ability of two recently synthesized series of N-alkyl carbazole derivatives to increase the Aβ soluble forms, through molecular docking simulations and in vitro experiments. Our data evidenced that two carbazole derivatives, the most active, adopt distinct binding modes involving key residues for Aβ fibrillization. They exhibit a good interfering activity on Aβ aggregation in mouse (N2a) cells, stably expressing wild-type human amyloid precursor protein (APP) 695. These preliminary results are promising and we are confident that the N-alkyl carbazole derivatives may encourage next future studies needed for enlarging the knowledge about the AD disease approach.
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17
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Whiteley CG. Arginine metabolising enzymes as targets against Alzheimers’ disease. Neurochem Int 2014; 67:23-31. [DOI: 10.1016/j.neuint.2014.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 01/26/2014] [Accepted: 01/28/2014] [Indexed: 01/26/2023]
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18
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Baran A, Plotniece A, Sobolev A, Vigante B, Gosteva M, Olkhovik V. Synthesis and photoluminescent properties of new cationic carbazole-containing luminophores. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-0988-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Kumar S, Okello EJ, Harris JR. Experimental inhibition of fibrillogenesis and neurotoxicity by amyloid-beta (Aβ) and other disease-related peptides/proteins by plant extracts and herbal compounds. Subcell Biochem 2012; 65:295-326. [PMID: 23225009 DOI: 10.1007/978-94-007-5416-4_13] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Amyloid-β (Aβ) fibrillogenesis and associated cyto/neurotoxicity are major pathological events and hallmarks in diseases such as Alzheimer's disease (AD). The understanding of Aβ molecular pathogenesis is currently a pharmacological target for rational drug design and discovery based on reduction of Aβ generation, inhibition of Aβ fibrillogenesis and aggregation, enhancement of Aβ clearance and amelioration of associated cytotoxicity. Molecular mechanisms for other amyloidoses, such as transthyretin amyloidosis, AL-amyloidosis, as well as α-synuclein and prion protein are also pharmacological targets for current drug therapy, design and discovery. We report on natural herbal compounds and extracts that are capable binding to and inhibiting different targets associated with AD and other amyloid-associated diseases, providing a basis for future therapeutic strategies. Many herbal compounds, including curcumin, galantamine, quercetin and other polyphenols, are under active investigation and hold considerable potential for future prophylactic and therapeutic treatment against AD and other neurodegenerative diseases, as well as systemic amyloid diseases. A common emerging theme throughout many studies is the anti-oxidant and anti-inflammatory properties of the compounds or herbal extracts under investigation, within the context of the inhibition of cyto/neurotoxicity and anti-amyloid activity.
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Affiliation(s)
- Suresh Kumar
- University School of Biotechnology, GGS Indraprastha University, Sector 16C, 10075, Dwarka, Delhi, India,
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20
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Neddenriep B, Calciano A, Conti D, Sauve E, Paterson M, Bruno E, Moffet DA. Short Peptides as Inhibitors of Amyloid Aggregation. ACTA ACUST UNITED AC 2011; 5:39-46. [PMID: 24653784 PMCID: PMC3956661 DOI: 10.2174/1874070701105010039] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The misfolding and aggregation of proteins into amyloid has been linked to a variety of age-related diseases. Aggregation of proteins, such as Aβ in Alzheimer’s disease and Islet Amyloid Polypeptide (IAPP, amylin) in type 2 diabetes, appears to lead to the formation of toxic assemblies. These assemblies range in size from small oligomers (2–8 proteins) to large fibrils (thousands of proteins). It remains unclear how these amyloidogenic proteins misfold and form toxic species, but growing evidence suggests that inhibiting the aggregation of these proteins could slow, if not prevent altogether, the progression of these diseases. We describe the use of small peptides (<43 amino acids) as inhibitors of amyloid-based aggregation. These peptides, often short complementary segments of the amyloid proteins, can be useful (i) for identifying the aggregation-prone regions of the amyloid proteins (ii) as models for drug discovery and (iii) as potential therapeutic agents themselves.
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Affiliation(s)
- Bradley Neddenriep
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - Anastasia Calciano
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - Daniel Conti
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - Erin Sauve
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - Marissa Paterson
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - Edward Bruno
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
| | - David A Moffet
- Department of Chemistry and Biochemistry Loyola Marymount University 1 LMU Drive Los Angeles, CA 90045, USA
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21
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N-phenyl-carbazole-based two-photon fluorescent probes: strong sequence dependence of the duplex vs quadruplex selectivity. Biochimie 2011; 93:1209-18. [PMID: 21672604 DOI: 10.1016/j.biochi.2011.05.035] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 05/31/2011] [Indexed: 11/23/2022]
Abstract
Herein we report on the synthesis and DNA recognition properties of a series of three N-phenyl carbazole-based light-up probes initially designed for two-photon absorption. The vinylic derivatives (Cbz-2Py, Cbz-3Py) display strong fluorescence enhancement when bound to various duplex- and quadruplex-forming oligonucleotides whereas the oxazole derivative is not fluorescent in DNA. Determination of affinity constants by fluorimetric titrations evidenced that Cbz-2Py has a clear preference for AT-rich duplex structures. Circular Dichroism (CD) measurements confirmed the sequence-dependent binding of this compound and suggest insertion in the minor groove as shown by a strong induced CD (ICD) signal and further supported by molecular modeling. Altogether the data indicate that duplex vs quadruplex selectivity of the dyes is strongly dependent on the sequence of the duplex. Finally, the dyes exhibit high two-photon absorption cross-sections (up to 540GM in glycerol) and allow a fine and bright staining of nuclear DNA with low background fluorescence as shown by one and two-photon confocal microscopy imaging of fixed cells.
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22
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Baine M, Georgie DS, Shiferraw EZ, Nguyen TPT, Nogaj LA, Moffet DA. Inhibition of Abeta42 aggregation using peptides selected from combinatorial libraries. J Pept Sci 2009; 15:499-503. [PMID: 19562726 DOI: 10.1002/psc.1150] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Increasing evidence suggests that the aggregation of the small peptide Abeta42 plays an important role in the development of Alzheimer's disease. Inhibiting the initial aggregation of Abeta42 may be an effective treatment for preventing, or slowing, the onset of the disease. Using an in vivo screen based on the enzyme EGFP, we have searched through two combinatorially diverse peptide libraries to identify peptides capable of inhibiting Abeta42 aggregation. From this initial screen, three candidate peptides were selected and characterized. ThT studies indicated that the selected peptides were capable of inhibiting amyloid aggregation. Additional ThT studies showed that one of the selected peptides was capable of disaggregating preformed Abeta42 fibers.
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Affiliation(s)
- Michael Baine
- Department of Chemistry and Biochemistry, Loyola Marymount University, One LMU Drive, Los Angeles, CA 90045, USA
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Endothelin-1 Reduces P-Glycoprotein Transport Activity in an In Vitro Model of Human Adult Blood–brain Barrier. Cell Mol Neurobiol 2008; 28:915-21. [DOI: 10.1007/s10571-008-9277-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Accepted: 03/13/2008] [Indexed: 02/06/2023]
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