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Srivastava AK, Srivastava S, Kumar V, Ghosh S, Yadav S, Malik R, Roy P, Prasad R. Identification and mechanistic exploration of structural and conformational dynamics of NF-kB inhibitors: rationale insights from in silico and in vitro studies. J Biomol Struct Dyn 2024; 42:1485-1505. [PMID: 37054525 DOI: 10.1080/07391102.2023.2200490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/02/2023] [Indexed: 04/15/2023]
Abstract
Increased expression of target genes that code for proinflammatory chemical mediators results from a series of intracellular cascades triggered by activation of dysregulated NF-κB signaling pathway. Dysfunctional NF-kB signaling amplifies and perpetuates autoimmune responses in inflammatory diseases, including psoriasis. This study aimed to identify therapeutically relevant NF-kB inhibitors and elucidate the mechanistic aspects behind NF-kB inhibition. After virtual screening and molecular docking, five hit NF-kB inhibitors opted, and their therapeutic efficacy was examined using cell-based assays in TNF-α stimulated human keratinocyte cells. To investigate the conformational changes of target protein and inhibitor-protein interaction mechanisms, molecular dynamics (MD) simulations, binding free energy calculations together with principal component (PC) analysis, dynamics cross-correlation matrix analysis (DCCM), free energy landscape (FEL) analysis and quantum mechanical calculations were carried out. Among identified NF-kB inhibitors, myricetin and hesperidin significantly scavenged intracellular ROS and inhibited NF-kB activation. Analysis of the MD simulation trajectories of ligand-protein complexes revealed that myricetin and hesperidin formed energetically stabilized complexes with the target protein and were able to lock NF-kB in a closed conformation. Myricetin and hesperidin binding to the target protein significantly impacted conformational changes and internal dynamics of amino acid residues in protein domains. Tyr57, Glu60, Lys144 and Asp239 residues majorly contributed to locking the NF-kB in a closed conformation. The combinatorial approach employing in silico tools integrated with cell-based approaches substantiated the binding mechanism and NF-kB active site inhibition by the lead molecule myricetin, which can be explored as a viable antipsoriatic drug candidate associated with dysregulated NF-kB.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amit Kumar Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Shubham Srivastava
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Viney Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Souvik Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Siddharth Yadav
- Department of Computer Science and Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Ruchi Malik
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
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Abbasi M, Mahboubi-Rabbani M, Kashfi K, Sadeghi-Aliabadi H. Prediction of dual NF-κB/IκB inhibitors using an integrative in-silico approaches. J Biomol Struct Dyn 2023; 41:14164-14178. [PMID: 36789516 DOI: 10.1080/07391102.2023.2178507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 02/04/2023] [Indexed: 02/16/2023]
Abstract
Multiple lines of evidence indicate that the NF-κB signaling pathway plays a pivotal role in carcinogenesis; activation of NF-κB in cancer increases cell proliferation and suppresses apoptosis, both of which define tumor mass development. Inhibiting NF-κB leads to tumor suppression by blocking the IKK-α/β enzymes, thus inhibiting its translocation. Furthermore, protecting p65 from acetylation and phosphorylation inhibits NF-κB through its active site. Some small molecules are assumed to inhibit NF-κB and IκB function separately. This study took one of the previously reported NF-κB inhibitors (compound D4) as a promising lead and predicted some dual NF-κB and IκB inhibitors. We performed a virtual screening (VS) workflow on a library with 186,146 compounds with 75% similarity to compound D4 on both NF-κB and IκB proteins. A total of 186 compounds were extracted from three steps of VS 36 were common in both proteins. These compounds were subjected to the quantum polarized ligand docking to elect potent compounds with the highest binding affinity for NF-κB and IκB proteins. The MM-GBSA method calculates the lowest binding free energy for eight selected compounds. These analyses found three top-ranked compounds for each protein with suitable pharmacokinetics properties and higher in-silico inhibitory ability. In the last screening, compound CID_4969 was introduced to a molecular dynamics (MDs) simulation study as a common inhibitor for both proteins. The MDs confirmed the main interactions between the final elected compound and NF-κB/IκB proteins. Consequently, the presented computational approaches could be used for designing promising anti-cancer agents.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Maryam Abbasi
- Department of Pharmaceutical Chemistry, School of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mohammad Mahboubi-Rabbani
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular, and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, NY, USA
| | - Hojjat Sadeghi-Aliabadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
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Huang ACS, Ishida Y, Li K, Rintanalert D, Hatano-sato K, Oishi S, Hosomichi J, Usumi-fujita R, Yamaguchi H, Tsujimoto H, Sasai A, Ochi A, Watanabe H, Ono T. NF-κB Decoy ODN-Loaded Poly(Lactic-co-glycolic Acid) Nanospheres Inhibit Alveolar Ridge Resorption. Int J Mol Sci 2023; 24:ijms24043699. [PMID: 36835111 PMCID: PMC9962103 DOI: 10.3390/ijms24043699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Residual ridge resorption combined with dimensional loss resulting from tooth extraction has a prolonged correlation with early excessive inflammation. Nuclear factor-kappa B (NF-κB) decoy oligodeoxynucleotides (ODNs) are double-stranded DNA sequences capable of downregulating the expression of downstream genes of the NF-κB pathway, which is recognized for regulating prototypical proinflammatory signals, physiological bone metabolism, pathologic bone destruction, and bone regeneration. The aim of this study was to investigate the therapeutic effect of NF-κB decoy ODNs on the extraction sockets of Wistar/ST rats when delivered by poly(lactic-co-glycolic acid) (PLGA) nanospheres. Microcomputed tomography and trabecular bone analysis following treatment with NF-κB decoy ODN-loaded PLGA nanospheres (PLGA-NfDs) demonstrated inhibition of vertical alveolar bone loss with increased bone volume, smoother trabecular bone surface, thicker trabecular bone, larger trabecular number and separation, and fewer bone porosities. Histomorphometric and reverse transcription-quantitative polymerase chain reaction analysis revealed reduced tartrate-resistant acid phosphatase-expressing osteoclasts, interleukin-1β, tumor necrosis factor-α, receptor activator of NF-κB ligand, turnover rate, and increased transforming growth factor-β1 immunopositive reactions and relative gene expression. These data demonstrate that local NF-κB decoy ODN transfection via PLGA-NfD can be used to effectively suppress inflammation in a tooth-extraction socket during the healing process, with the potential to accelerate new bone formation.
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Affiliation(s)
- Albert chun-shuo Huang
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Yuji Ishida
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
- Correspondence: ; Tel.: +81-3-5803-5528
| | - Kai Li
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Duantawan Rintanalert
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
- Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kasumi Hatano-sato
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Shuji Oishi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Jun Hosomichi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Risa Usumi-fujita
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
| | - Hiroyuki Yamaguchi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Hiroyuki Tsujimoto
- Pharmaceutical/Beauty Science Research Center, Material Business Division, Hosokawa Micron Corporation, Osaka 573-1132, Japan
| | - Aiko Sasai
- Pharmaceutical/Beauty Science Research Center, Material Business Division, Hosokawa Micron Corporation, Osaka 573-1132, Japan
| | - Ayaka Ochi
- Pharmaceutical/Beauty Science Research Center, Material Business Division, Hosokawa Micron Corporation, Osaka 573-1132, Japan
| | | | - Takashi Ono
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
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Bosso M, Stürzel CM, Kmiec D, Badarinarayan SS, Braun E, Ito J, Sato K, Hahn BH, Sparrer KMJ, Sauter D, Kirchhoff F. An additional NF-κB site allows HIV-1 subtype C to evade restriction by nuclear PYHIN proteins. Cell Rep 2021; 36:109735. [PMID: 34551301 PMCID: PMC8505707 DOI: 10.1016/j.celrep.2021.109735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/23/2021] [Accepted: 08/26/2021] [Indexed: 10/28/2022] Open
Abstract
Subtype C is the most prevalent clade of human immunodeficiency virus type 1 (HIV-1) worldwide. The reasons for this are poorly understood. Here, we demonstrate that a characteristic additional third nuclear factor κB (NF-κB) binding site in the long terminal repeat (LTR) promoter allows subtype C HIV-1 strains to evade restriction by nuclear PYHIN proteins, which sequester the transcription factor Sp1. Further, other LTR alterations are responsible for rare PYHIN resistance of subtype B viruses. Resistance-conferring mutations generally reduce the dependency of HIV-1 on Sp1 for virus production and render LTR transcription highly responsive to stimulation by NF-κB/p65. A third NF-κB binding site increases infectious virus yield in primary CD4+ T cells in an γ-interferon-inducible protein 16 (IFI16)-dependent manner. Comprehensive sequence analyses suggest that the frequency of circulating PYHIN-resistant HIV-1 strains is increasing. Our finding that an additional NF-κB binding site in the LTR confers resistance to nuclear PYHIN proteins helps to explain the dominance of clade C HIV-1 strains.
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Affiliation(s)
- Matteo Bosso
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Christina M Stürzel
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Dorota Kmiec
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; Department of Infectious Diseases, School of Immunology and Microbial Sciences, King's College London, London SE5 9RS, UK
| | - Smitha Srinivasachar Badarinarayan
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Elisabeth Braun
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Jumpei Ito
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Kei Sato
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Beatrice H Hahn
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6076, USA
| | | | - Daniel Sauter
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany.
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Penthala NR, Balasubramaniam M, Dachavaram SS, Morris EJ, Bhat-Nakshatri P, Ponder J, Jordan CT, Nakshatri H, Crooks PA. Antitumor properties of novel sesquiterpene lactone analogs as NFκB inhibitors that bind to the IKKβ ubiquitin-like domain (ULD). Eur J Med Chem 2021; 224:113675. [PMID: 34229108 DOI: 10.1016/j.ejmech.2021.113675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 11/30/2022]
Abstract
Melampomagnolide B (MMB, 3) is a parthenolide (PTL, 1) based sesquiterpene lactone that has been used as a template for the synthesis of a plethora of lead anticancer agents owing to its reactive C-10 primary hydroxyl group. Such compounds have been shown to inhibit the IKKβ subunit, preventing phosphorylation of the cytoplasmic IκB inhibitory complex. The present study focuses on the synthesis and in vitro antitumor properties of novel benzyl and phenethyl carbamates of MMB (7a-7k). Screening of these MMB carbamates identified analogs with potent growth inhibition properties against a panel of 60 human cancer cell lines (71% of the molecules screened had GI50 values < 2 μM). Two analogs, the benzyl carbamate 7b and the phenethyl carbamate7k, were the most active compounds. Lead compound 7b inhibited cell proliferation in M9 ENL AML cells, and in TMD-231, OV-MD-231 and SUM149 breast cancer cell lines. Interestingly, mechanistic studies showed that 7b did not inhibit p65 phosphorylation in M9 ENL AML and OV-MD-231 cells, but did inhibit phophorylation of both p65 and IκBα in SUM149 cells. 7b also reduced NFκB binding to DNA in both OV-MD-231 and SUM149 cells. Molecular docking studies indicated that 7b and 7k are both predicted to interact with the ubiquitin-like domain (ULD) of the IKKβ subunit. These data suggest that in SUM149 cells, 7b is likely acting as an allosteric inhibitor of IKKβ, whereas in M9 ENL AML and OV-MD-231 cells 7b is able to inhibit an event after IκB/p65/p50 phosphorylation by IKKβ that leads to inhibition of NFκB activation and reduction in NFκB-DNA binding. Analog 7b was by far the most potent compound in either carbamate series, and was considered an important lead compound for further optimization and development as an anticancer agent.
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Affiliation(s)
- Narsimha R Penthala
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | - Meenakshisundaram Balasubramaniam
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | - Soma Shekar Dachavaram
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | - Earl J Morris
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | - Poornima Bhat-Nakshatri
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, United States
| | - Jessica Ponder
- Division of Hematology and University of Colorado, Aurora, CO, 80045, United States
| | - Craig T Jordan
- Division of Hematology and University of Colorado, Aurora, CO, 80045, United States
| | - Harikrishna Nakshatri
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, United States
| | - Peter A Crooks
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States.
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Yahaya MAF, Bakar ARA, Stanslas J, Nordin N, Zainol M, Mehat MZ. Insights from molecular docking and molecular dynamics on the potential of vitexin as an antagonist candidate against lipopolysaccharide (LPS) for microglial activation in neuroinflammation. BMC Biotechnol 2021; 21:38. [PMID: 34090414 PMCID: PMC8178909 DOI: 10.1186/s12896-021-00697-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 05/12/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Neuroinflammation has been identified to be the key player in most neurodegenerative diseases. If neuroinflammation is left to be unresolved, chronic neuroinflammation will be establish. Such situation is due to the overly-activated microglia which have the tendency to secrete an abundance amount of pro-inflammatory cytokines into the neuron microenvironment. The abundance of pro-inflammatory cytokines will later cause toxic and death to neurons. Toll-like receptor 4 (TLR4)/MD-2 complex found on the cell surface of microglia is responsible for the attachment of LPS and activation of nuclear factor-κB (NF-κB) downstream signalling pathway. Albeit vitexin has been shown to possess anti-inflammatory property, however, little is known on its ability to bind at the binding site of TLR4/MD-2 complex of microglia as well as to be an antagonist for LPS. RESULTS The present study reveals that both vitexin and donepezil are able to bind at the close proximity of LPS binding site located at the TLR4/MD-2 complex with the binding energy of - 4.35 and - 9.14 kcal/mol, respectively. During molecular dynamic simulations, both vitexin and donepezil formed stable complex with TLR4/MD-2 throughout the 100 ns time length with the root mean square deviation (RMSD) values of 2.5 Å and 4.0 Å, respectively. The root mean square fluctuation (RMSF) reveals that both compounds are stable. Interestingly, the radius of gyration (rGyr) for donepezil shows notable fluctuations when compare with vitexin. The MM-GBSA results showed that vitexin has higher binding energy in comparison with donepezil. CONCLUSIONS Taken together, the findings suggest that vitexin is able to bind at the binding site of TLR4/MD-2 complex with more stability than donepezil throughout the course of 100 ns simulation. Hence, vitexin has the potential to be an antagonist candidate for LPS.
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Affiliation(s)
- M A F Yahaya
- Department of Human Anatomy, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - A R Abu Bakar
- Department of Chemical Engineering Technology, Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), 01000, Kangar, Perlis, Malaysia
| | - J Stanslas
- Department of Medicine, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - N Nordin
- Department of Obstetrics & Gynaecology, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - M Zainol
- Bioassay Unit, Herbal Medicine Research Centre (HMRC), Institute for Medical Research (IMR), National Institute of Health (NIH), Jalan Setia Murni U13/52, Seksyen U13, Bandar Setia Alam, 40170, Shah Alam, Selangor, Malaysia
| | - M Z Mehat
- Department of Human Anatomy, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
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Nehal N, Nabi B, Rehman S, Pathak A, Iqubal A, Khan SA, Yar MS, Parvez S, Baboota S, Ali J. Chitosan coated synergistically engineered nanoemulsion of Ropinirole and nigella oil in the management of Parkinson's disease: Formulation perspective and In vitro and In vivo assessment. Int J Biol Macromol 2020; 167:605-619. [PMID: 33278450 DOI: 10.1016/j.ijbiomac.2020.11.207] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 11/22/2020] [Accepted: 11/29/2020] [Indexed: 12/22/2022]
Abstract
The research presented aims at developing Ropinirole hydrochloride (RHCl) nanoemulsion (NE) with nigella oil for Parkinson's disease (PD). In silico study was done to explore interactions of ropinirole and thymoquinone at receptor site (TNF-α and NFK-β). Ropinirole and Thymoquinone forms a hydrogen bond with residue Arginine 201 and residue Arginine 253 with a bond length of 1.89 Å and 2.30 Å at the NF-κβ receptor. NE was optimized using Central Composite Rotatable Design (CCRD). The globule size of chitosan coated NE, Polydispersity index (PDI) and zeta potential were 183.7 ± 5.2 nm, 0.263 ± 0.005, and 24.9 mV respectively. NE exhibited 85.28% transmittance showing the formulation was clear and transparent. TEM showed that NE had spherical globules with no aggregation. The formulation had a stable pH value of 5.8 ± 0.18. In vitro release and permeation studies exhibited 2 folds and 3.4 folds enhancement when compared with the drug suspension. Neurobehavioral activity and biochemical parameters corroborated well with the pharmacokinetic results. Histopathological study and immunohistochemical analysis were performed to get better picture of 6-OHDA induced toxicity and reversal of PD symptoms. Thus, the NE tailored is a promising synergistic approach yielding enticing outcomes for better management of PD related symptoms.
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Affiliation(s)
- Nida Nehal
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Bushra Nabi
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Saleha Rehman
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Ankita Pathak
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Ashif Iqubal
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Saif Ahmad Khan
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - M Shahar Yar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Suhel Parvez
- Department of Toxicology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Sanjula Baboota
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Javed Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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Ali A, Shah SA, Zaman N, Uddin MN, Khan W, Ali A, Riaz M, Kamil A. Vitamin D exerts neuroprotection via SIRT1/nrf-2/ NF-kB signaling pathways against D-galactose-induced memory impairment in adult mice. Neurochem Int 2020; 142:104893. [PMID: 33159979 DOI: 10.1016/j.neuint.2020.104893] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 12/14/2022]
Abstract
Vitamin D (Vt. D) is one of the vital hormone having multiple functions in various tissues, including brain. Several evidences reported that Vt. D plays a significant part in memory and cognition as its inadequate amount may accelerate cognitive impairment. This study shows for the first time the antioxidant potential of Vt. D against D-Galactose (D-gal) induced oxidative stress mediated Alzheimer disease (AD) pathology in male adult albino mice. The result reveals that the mice exposed to D-gal (120 mg/kg) for eight weeks have pre-and post-synaptic dysfunction and impaired memory investigated through Morris water maze and Y-maze tests. This is followed by the suppressed Nuclear factor erythroid 2-related factor 2 (NRF2), Heme Oxygenase-1 (HO-1) and elevated expressions of Nuclear Factor kappa B (NF-kB), Tumor Necrosis Factor alpha (TNF-α) and Interleukin 1 beta (IL-1β) proteins in the brain homogenates evaluated through western blotting technique. On the other hand Vt. D (100 μg/kg) administration (three times a week for 4 weeks) activated Silent mating type information regulation 2 homolog 1 (SIRT1) and significantly improved both the neuronal synapse and memory, reduced oxidative stress by upregulating NRF-2 and HO-1 and downregulating NF-kB, TNF-α and IL-1β proteins expression. Most importantly, Vt. D significantly abrogate the amyloidogenic pathway of amyloid beta (Aβ) production against D-gal in the brains of adult male albino mice. These results reveal that Vt. D being an antioxidant agent plays a vital role in reducing the AD pathophysiology in D-gal induced animal model of aging, therefore act as a potential drug candidate in neurodegenerative diseases.
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Affiliation(s)
- Ammar Ali
- Department of Biotechnology, Abdul Wali Khan University, Mardan, Pakistan
| | - Shahid Ali Shah
- Department of Chemistry, Sarhad University of Information and Technology, Peshawar, Pakistan; Neuro Molecular Medicine Research Center (NMMRC), Ring Road, Peshawar, Pakistan
| | - Nasib Zaman
- Center for Biotechnology and Microbiology, University of Swat, Pakistan
| | | | - Wajid Khan
- Center for Biotechnology and Microbiology, University of Swat, Pakistan
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University, Mardan, Pakistan
| | - Muhammad Riaz
- Department of Biochemistry, Abdul Wali Khan University, Mardan, Pakistan
| | - Atif Kamil
- Department of Biotechnology, Abdul Wali Khan University, Mardan, Pakistan.
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9
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Dao-Huy T, Latkolik S, Bräuer J, Pfeil A, Stuppner H, Schnürch M, Dirsch VM, Mihovilovic MD. Structural Features Defining NF-κB Inhibition by Lignan-Inspired Benzofurans and Benzothiophenes. Biomolecules 2020; 10:biom10081131. [PMID: 32751917 PMCID: PMC7463992 DOI: 10.3390/biom10081131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/24/2020] [Accepted: 07/26/2020] [Indexed: 12/19/2022] Open
Abstract
A series of 2-arylbenzofurans and 2-arylbenzothiophenes was synthesized carrying three different side chains in position five. The synthesized compounds were tested for NF-κB inhibition to establish a structure activity relationship. It was found that both, the side chain in position five and the substitution pattern of the aryl moiety in position two have a significant influence on the inhibitory activity.
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Affiliation(s)
- Toan Dao-Huy
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
- Department of Pharmaceutical and Pesticide Technology, School of Chemical Engineering, Hanoi University of Science and Technology, Dai Co Viet 1, Hai Ba Trung dist., Hanoi 10000, Vietnam
| | - Simone Latkolik
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Julia Bräuer
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Andreas Pfeil
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria;
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
- Correspondence: (M.S.); (V.M.D.)
| | - Verena M. Dirsch
- Department of Pharmacognosy, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (S.L.); (J.B.); (A.P.)
- Correspondence: (M.S.); (V.M.D.)
| | - Marko D. Mihovilovic
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (T.D.-H.); (M.D.M.)
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Yang M, Jinpeng C, Wang Y, Wang Q, Wang S, Wei S, Qin Q. Nuclear factor kappa B/p65 plays a positive role in peroxisome proliferator-activated receptor δ expression in orange-spotted grouper Epinephelus coioides. Fish Shellfish Immunol 2020; 102:101-107. [PMID: 32259581 DOI: 10.1016/j.fsi.2020.03.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/23/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
The transcription factor nuclear factor kappa B (NF-κB) is a critical regulator of immune and inflammatory responses with crucial roles in various pathophysiologic conditions involving cell survival and death. Recent studies in mammals showed that NF-κB was also involved in peroxisome proliferator-activated receptors (PPARs)-mediated immune responses However, the mechanism by which NF-κB regulates PPARδ in teleosts remains unclear. In the present study, we analyzed the potential role of NF-κB/p65 (Ecp65) in the immune response stimulated by various pathogens in the grouper Epinephelus coioides. Ecp65 expression was significantly induced soon after infection with lipopolysaccharide, nervous necrosis virus, poly(I:C), and zymosan A. We also analyzed the promoter to determine the regulatory effect of Ecp65 on PPARδ expression, using progressive EcPPARδ promoter deletion mutations. Among the five truncated mutants, the luciferase reporter activity of the PPARδ-5 promoter region was highest in response to Ecp65, indicating that the core p65-binding region was located in the PPARδ-5 promoter region (+122 bp to +383 bp). Mutation analyses indicated that the luciferase reporter activity of the EcPPARδ promoter was dramatically decreased by mutation of the M3 (+305 bp to +324 bp) and M4 (+346 bp to +365 bp) binding sites, respectively. We further confirmed that Ecp65 bound to the M3 and M4 binding sites in the 5'-untranslated region of EcPPARδ by electrophoretic mobility shift assay. Finally, overexpression of Ecp65 in vitro notably promoted the transcription of EcPPARδ, interferon-related genes, and several inflammatory cytokines. This study demonstrated that Ecp65 plays an important role in modulating the innate immune responses in groupers. These results also further our understanding of the mechanisms involved in the transcriptional regulation of PPARs by p65 in bony fish.
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Affiliation(s)
- Min Yang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Chen Jinpeng
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Yuxin Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Qing Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Shaowen Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Shina Wei
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Qiwei Qin
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266000, China.
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11
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Fattori V, Rasquel-Oliveira FS, Artero NA, Ferraz CR, Borghi SM, Casagrande R, Verri WA. Diosmin Treats Lipopolysaccharide-Induced Inflammatory Pain and Peritonitis by Blocking NF-κB Activation in Mice. J Nat Prod 2020; 83:1018-1026. [PMID: 32083866 DOI: 10.1021/acs.jnatprod.9b00887] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Gram-negative bacterial infections induce inflammation and pain. Lipopolysaccharide (LPS) is a pathogen-associated molecular pattern and the major constituent of Gram-negative bacterial cell walls. Diosmin is a citrus flavonoid with antioxidant and anti-inflammatory activities. Here we investigated the efficacy of diosmin in a nonsterile model of inflammatory pain and peritonitis induced by LPS. Diosmin reduced in a dose-dependent manner LPS-induced inflammatory mechanical hyperalgesia, thermal hyperalgesia, and neutrophil recruitment to the paw (myeloperoxidase activity). Diosmin also normalized changes in paw weight distribution assessed by static weight bearing as a nonreflexive method of pain measurement. Moreover, treatment with diosmin inhibited LPS-induced peritonitis as observed by a reduction of leukocyte recruitment and oxidative stress. Diosmin reduced LPS-induced total ROS production (DCFDA assay) and superoxide anion production (NBT assay and NBT-positive cells). We also observed a reduction of LPS-induced oxidative stress and cytokine production (IL-1β, TNF-α, and IL-6) in the paw. Furthermore, we demonstrated that diosmin inhibited LPS-induced NF-κB activation in peritoneal exudate. Thus, we demonstrated, using a model of nonsterile inflammation induced by LPS, that diosmin is a promising molecule for the treatment of inflammation and pain.
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Affiliation(s)
- Victor Fattori
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Fernanda S Rasquel-Oliveira
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Nayara A Artero
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Camila R Ferraz
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Sergio M Borghi
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
- Center for Research in Health Sciences, University of Northern Paraná, Londrina 86057-970, Paraná, Brazil
| | - Rubia Casagrande
- Departament of Pharmaceutical Sciences, Center of Health Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Waldiceu A Verri
- Departament of Pathology, Center of Biological Sciences, Londrina State University, Londrina 86057-970, Paraná, Brazil
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12
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Soomro S, Mesaik MA, Shaheen F, Khan N, Halim SA, Ul-Haq Z, Ali Siddiqui R, Choudhary MI. Inhibitory Effects of Myrtucommuacetalone 1 (MCA-1) from Myrtus communis on Inflammatory Response in Mouse Macrophages. Molecules 2019; 25:molecules25010013. [PMID: 31861488 PMCID: PMC6983223 DOI: 10.3390/molecules25010013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/26/2019] [Accepted: 12/09/2019] [Indexed: 12/26/2022] Open
Abstract
(1) Introduction: Reactive oxygen species (ROS) and nitric oxide (NO) are key signaling molecules that play important roles in the progression of inflammatory disorders. The objective of this study was to explore the use of myrtucommuacetalone-1 (MCA-1), as a novel compound of natural origin and a potential anti-inflammatory agent. (2) Methodology: The anti-inflammatory potential of MCA-1, which was isolated from Myrthus communis Linn, was determined by assaying superoxide, hydrogen peroxide, and nitric oxide production in macrophages. Furthermore, the effects of the compound were analyzed via phosphorylation and translocation of the transcription factor NF kappa B, which is a key regulator of iNOS activation. The effect of MCA-1 on the inducible nitric oxide synthase (iNOS) enzyme was also examined using in silico docking studies. The anticancer potential for MCA-1 was evaluated with an MTT cytotoxic assay. (3) Results: In stimulated macrophages, MCA-1 inhibited superoxide production by 48%, hydrogen peroxide by 53%, and nitric oxide (NO) with an IC50 of <1 µg/mL. MCA-1 also showed a very strong binding pattern within the active site of the inducible nitric oxide synthase enzyme. Furthermore, 25 µg/mL of MCA-1 inhibited inducible nitric oxide synthase expression and abolished transcription factor (NFκB) phosphorylation and translocation to the nucleus. Cytotoxicity analyses of MCA-1 on 3T3 mouse fibroblasts, CC1 liver cell line, J774.2, macrophages and MDBK bovine kidney epithelial cell, yielded IC50 values of 6.53 ± 1.2, 4.6 ± 0.7, 5 ± 0.8, and 4.6 ± 0.7, µg/mL, respectively. (4) Conclusion: Our results suggest that MCA-1, a major phloroglucinol-type compound, shows strong anti-inflammatory activity and has a potential to be a leading therapeutic agent in the future.
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Affiliation(s)
- Samreen Soomro
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- Faculty of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia
- Correspondence: or ; Tel.: +92-3222596723
| | - M. Ahmed Mesaik
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- Faculty of Medicine, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Farzana Shaheen
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.S.); (N.K.)
| | - Noureen Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.S.); (N.K.)
| | - Sobia Ahsan Halim
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa, PC 616, Oman
| | - Zaheer Ul-Haq
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.S.); (N.K.)
| | - Rafat Ali Siddiqui
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- Food Chemistry and Nutrition Science, Agriculture Research Station, Virginia State University, Petersburg, VA 23806, USA
| | - Muhammad Iqbal Choudhary
- Dr Panjwani Center For Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan; (M.A.M.); (S.A.H.); (Z.U.-H.); (R.A.S.); (M.I.C.)
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.S.); (N.K.)
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13
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Khan SZ, Gasperino S, Zeichner SL. Nuclear Transit and HIV LTR Binding of NF-κB Subunits Held by IκB Proteins: Implications for HIV-1 Activation. Viruses 2019; 11:v11121162. [PMID: 31888181 PMCID: PMC6949894 DOI: 10.3390/v11121162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 12/11/2019] [Indexed: 02/07/2023] Open
Abstract
No effective therapy to eliminate the HIV latently infected cell reservoir has been developed. One approach, “shock and kill”, employs agents that activate HIV, subsequently killing the activated infected cells and/or virus. Shock and kill requires agents that safely and effectively activate HIV. One class of activation agents works through classical NF-κB pathways, but global NF-κB activators are non-specific and toxic. There exist two major IκBs: IκBα, and IκBε, which hold activating NF-κB subunits in the cytoplasm, releasing them for nuclear transit upon cell stimulation. IκBα was considered the main IκB responsible for gene expression regulation, including HIV activation. IκBε is expressed in cells constituting much of the latent HIV reservoir, and IκBε knockout mice have a minimal phenotype, suggesting that IκBε could be a valuable target for HIV activation and reservoir depletion. We previously showed that targeting IκBε yields substantial increases in HIV expression. Here, we show that IκBε holds c-Rel and p65 activating NF-κB subunits in the cytoplasm, and that targeting IκBε with siRNA produces a strong increase in HIV expression associated with enhanced c-Rel and p65 transit to the nucleus and binding to the HIV LTR of the activating NF-κBs, demonstrating a mechanism through which targeting IκBε increases HIV expression. The findings suggest that it may be helpful to develop HIV activation approaches, acting specifically to target IκBε and its interactions with the NF-κBs.
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Affiliation(s)
- Sohrab Z. Khan
- Department of Pediatrics, Child Health Research Center, and the Pendleton Pediatric Infectious Disease Laboratory, University of Virginia, Charlottesville, VA 22908, USA; (S.Z.K.); (S.G.)
| | - Sofia Gasperino
- Department of Pediatrics, Child Health Research Center, and the Pendleton Pediatric Infectious Disease Laboratory, University of Virginia, Charlottesville, VA 22908, USA; (S.Z.K.); (S.G.)
| | - Steven L. Zeichner
- Department of Pediatrics, Child Health Research Center, and the Pendleton Pediatric Infectious Disease Laboratory, University of Virginia, Charlottesville, VA 22908, USA; (S.Z.K.); (S.G.)
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA 22908, USA
- Correspondence:
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Khalil MNA, Choucry MA, El Senousy AS, Hassan A, El-Marasy SA, El Awdan SA, Omar FA. Ambrosin, a potent NF-κβ inhibitor, ameliorates lipopolysaccharide induced memory impairment, comparison to curcumin. PLoS One 2019; 14:e0219378. [PMID: 31276550 PMCID: PMC6611615 DOI: 10.1371/journal.pone.0219378] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/23/2019] [Indexed: 01/05/2023] Open
Abstract
Despite its poor bioavailability, curcumin is a promising natural polyphenol targeting NF-κβ. NF-κβ is a target for new therapeutics because it plays a pivotal role in the pathophysiology of Alzheimer disease (AD). In contrast, ambrsoin, a sesquiterpene lactone which is a potent NF-κβ inhibitor, is scarcely studied in AD models. The current work aims to assess the efficacy of ambrosin as a possible remedy for AD. In silico studies showed that bioavailability and BBB permeability could be favorable for ambrosin over curcumin. Memory impairment was induced in mice by single intraperitoneal injection of LPS (0.4 mg/kg). Treated groups received curcumin (100 mg/kg) or ambrosin at doses (5 or 10 mg/kg) for 7 days. Mice in treated groups showed a significant improvement in memory functions during Morris water maze and object recognition tests. Curcumin and ambrosin (10 mg/kg) inhibited the upsurge of NF-κβp65 transcript and protein levels. Consequently, downstream pro-inflammatory and nitrosative mediators were inhibited, namely, TNF-α, IL-1β, COX-2 and iNOS. BACE1 was inhibited, thereby reducing amyloid plaques (Aβ) deposition and eventually reducing inflammation and apoptosis of neurons as revealed by immunohistopathological examination. In conclusion, ambrosin can be repurposed as AD remedy after further pharmacokinetic/pharamacodynamic assessments. It could serve as an additional lead drug for AD therapeutics.
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Affiliation(s)
- Mohammed N. A. Khalil
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- * E-mail:
| | - Mouchira A. Choucry
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Amira S. El Senousy
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Azza Hassan
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza Square, Giza, Egypt
| | | | | | - Farghaly A. Omar
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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15
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Feng L, Wang J, Liu S, Zhang XJ, Bi QR, Hu YY, Wang Z, Tan NH. Colletopeptides A-D, Anti-inflammatory Cyclic Tridepsipeptides from the Plant Endophytic Fungus Colletotrichum sp. S8. J Nat Prod 2019; 82:1434-1441. [PMID: 31181925 DOI: 10.1021/acs.jnatprod.8b00829] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new hybrid peptide-polyketide cyclic tridepsipeptides, colletopeptides A-D (1-4), were isolated and characterized from the endophytic fungus Colletotrichum sp. S8 derived from the stems of Rubia podantha with the guidance of LC-UV-MS detection. Their structures were elucidated by extensive spectroscopic analysis and X-ray crystallography. Compounds 1-4 are rare natural 12-membered cyclic tridepsipeptides containing a 3,5,11-trihydroxy-2-methyl dodecanoic acid unit in their structures. 1-4 inhibited lipopolysaccharide-induced nitric oxide production in RAW264.7 macrophages with the IC50 values of 8.3, 38.7, 13.5, and 22.2 μM, respectively. 1 also inhibited the production of inflammatory factors IL-6 and TNF-α, and decreased the phosphorylation of NF-κB-associated proteins IκBα and p65.
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Affiliation(s)
- Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Jia Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Shuai Liu
- Faculty of Life Science and Food Engineering , Huaiyin Institute of Technology , Huaian 223001 , People's Republic of China
| | - Xue-Jia Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Qi-Rui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Yan-Yun Hu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
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16
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González Y, Doens D, Cruz H, Santamaría R, Gutiérrez M, Llanes A, Fernández PL. A Marine Diterpenoid Modulates the Proteasome Activity in Murine Macrophages Stimulated with LPS. Biomolecules 2018; 8:E109. [PMID: 30301161 PMCID: PMC6315684 DOI: 10.3390/biom8040109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/14/2018] [Accepted: 10/01/2018] [Indexed: 11/17/2022] Open
Abstract
The proteasome is an intracellular complex that degrades damaged or unfolded proteins and participates in the regulation of several processes. The immunoproteasome is a specialized form that is expressed in response to proinflammatory signals and is particularly abundant in immune cells. In a previous work, we found an anti-inflammatory effect in a diterpenoid extracted from the octocoral Pseudopterogorgia acerosa, here called compound 1. This compound prevented the degradation of inhibitor κB α (IκBα) and the subsequent activation of nuclear factor κB (NFκB), suggesting that this effect might be due to inhibition of the ubiquitin-proteasome system. Here we show that compound 1 inhibits the proteasomal chymotrypsin-like activity (CTL) of murine macrophages in the presence of lipopolysaccharide (LPS) but not in its absence. This effect might be due to the capacity of this compound to inhibit the activity of purified immunoproteasome. The compound inhibits the cell surface expression of major histocompatibility complex (MHC)-I molecules and the production of proinflammatory cytokines induced by LPS in vitro and in vivo, respectively. Molecular docking simulations predicted that compound 1 selectively binds to the catalytic site of immunoproteasome subunits β1i and β5i, which are responsible for the CTL activity. Taken together these findings suggest that the compound could be a selective inhibitor of the immunoproteasome, and hence could pave the way for its future evaluation as a candidate for the treatment of inflammatory disorders and autoimmune diseases.
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Affiliation(s)
- Yisett González
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP),Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
| | - Deborah Doens
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP),Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
| | - Héctor Cruz
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP),Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
- Facultad de Ciencias de la Salud Dr. William C. Gorgas, Universidad Latina de Panamá, 0801 Panamá, Panamá.
| | - Ricardo Santamaría
- Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
| | - Marcelino Gutiérrez
- Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
| | - Alejandro Llanes
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP),Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
| | - Patricia L Fernández
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP),Edificio 219, Ciudad del Saber, 0801 Panamá, Panamá.
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17
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Jennings E, Esposito D, Rittinger K, Thurston TLM. Structure-function analyses of the bacterial zinc metalloprotease effector protein GtgA uncover key residues required for deactivating NF-κB. J Biol Chem 2018; 293:15316-15329. [PMID: 30049795 PMCID: PMC6166728 DOI: 10.1074/jbc.ra118.004255] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/23/2018] [Indexed: 12/03/2022] Open
Abstract
The closely related type III secretion system zinc metalloprotease effector proteins GtgA, GogA, and PipA are translocated into host cells during Salmonella infection. They then cleave nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) transcription factor subunits, dampening activation of the NF-κB signaling pathway and thereby suppressing host immune responses. We demonstrate here that GtgA, GogA, and PipA cleave a subset of NF-κB subunits, including p65, RelB, and cRel but not NF-κB1 and NF-κB2, whereas the functionally similar type III secretion system effector NleC of enteropathogenic and enterohemorrhagic Escherichia coli cleaved all five NF-κB subunits. Mutational analysis of NF-κB subunits revealed that a single nonconserved residue in NF-κB1 and NF-κB2 that corresponds to the P1' residue Arg-41 in p65 prevents cleavage of these subunits by GtgA, GogA, and PipA, explaining the observed substrate specificity of these enzymes. Crystal structures of GtgA in its apo-form and in complex with the p65 N-terminal domain explained the importance of the P1' residue. Furthermore, the pattern of interactions suggested that GtgA recognizes NF-κB subunits by mimicking the shape and negative charge of the DNA phosphate backbone. Moreover, structure-based mutational analysis of GtgA uncovered amino acids that are required for the interaction of GtgA with p65, as well as those that are required for full activity of GtgA in suppressing NF-κB activation. This study therefore provides detailed and critical insight into the mechanism of substrate recognition by this family of proteins important for bacterial virulence.
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Affiliation(s)
- Elliott Jennings
- From the Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London SW7 2AZ and
| | - Diego Esposito
- the Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, United Kingdom
| | - Katrin Rittinger
- the Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, United Kingdom
| | - Teresa L M Thurston
- From the Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London SW7 2AZ and
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18
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Yoshino Y, Yuan B, Okusumi S, Aoyama R, Murota R, Kikuchi H, Takagi N, Toyoda H. Enhanced cytotoxic effects of arsenite in combination with anthocyanidin compound, delphinidin, against a human leukemia cell line, HL-60. Chem Biol Interact 2018; 294:9-17. [PMID: 30125548 DOI: 10.1016/j.cbi.2018.08.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 08/06/2018] [Accepted: 08/15/2018] [Indexed: 01/23/2023]
Abstract
Among five major anthocyanin compounds, delphinidin exhibited the most potent and selective cytocidal effect against HL-60, a trivalent arsenic (As(III))-resistant cell line. Co-treatment with delphinidin and As(III) resulted in the reduction of IC50 value for As(III) from 11.2 to 1.5 μM, which was considered as clinically achieved concentrations of As(III). The combination treatment strongly preferred to selectively enhance the cytotoxicity of As(III) against HL-60 cells rather than human peripheral blood mononuclear cells. The induction of apoptosis as evidenced by the increase of sub-G1 cells, DNA fragmentation, annexin V-positive cells and the activation of caspase-8, -9 and -3 was observed in HL-60 cells co-treated with As(III) and delphinidin. Similar to the activation pattern of caspases, a substantial decrease in the expression level of Bid along with the loss of mitochondrial membrane potential was also observed. These results suggested that the combination treatment triggered a convergence of the intrinsic and extrinsic pathways of apoptosis via the activation of caspase-8 and cleaved Bid. Delphinidin itself significantly decreased the intracellular GSH ([i]GSH) and nuclear factor-κB (NF-κB) binding activity, and further returned As(III)-triggered increment of [i]GSH and enhancement of NF-κB binding activity to control level. Additionally, buthionine sulfoximine, a GSH depletor; JSH-23, a NF-κB inhibitor, also mimicked the capacity of delphinidin to significantly induce the reduction of [i]GSH along with the potentiation of As(III) cytotoxicity in HL-60 cells. These observations suggested that delphinidin-induced sensitization of HL-60 cells to As(III) was caused by the reduction of [i]GSH, which was probably associated with the inhibitory effect of delphinidin on NF-κB binding activity. These findings further suggest that delphinidin-induced sensitization of HL-60 cells to As(III) may lead to dose reduction of As(III) in clinical application, and ultimately contribute to minimizing its side effects.
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Affiliation(s)
- Yuta Yoshino
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Bo Yuan
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan; Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.
| | - Saki Okusumi
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Reiji Aoyama
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Ryo Murota
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hidetomo Kikuchi
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Norio Takagi
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hiroo Toyoda
- Department of Clinical Molecular Genetics, School of Pharmacy, Tokyo University of Pharmacy & Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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Jones MR, Yue J, Wilson AK. Impact of intracellular ionic strength on dimer binding in the NF-kB Inducing kinase. J Struct Biol 2018; 202:183-190. [PMID: 29326084 DOI: 10.1016/j.jsb.2018.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/03/2018] [Accepted: 01/06/2018] [Indexed: 10/18/2022]
Abstract
Improper signaling of the nuclear factor-κB (NF-κB) pathway plays a critical role in many inflammatory disease states including cancer, stroke, and viral infections. Although the signaling pathways are known, how these molecular mechanisms respond to changes in the intracellular microenvironment such as pH, ionic strength, and temperature, remains elusive. Molecular dynamics simulations were employed to differentiate the structural dynamics of the NF-κB Inducing Kinase (NIK), a protein kinase responsible for invoking the non-canonical NF-κB pathway, in its native and mutant form, and in the absence and presence of salt concentration in efforts to probe whether changes in the ionic environment stabilize or destabilize the NIK dimer. Analyses of structure-activity and conformational-activity relationships indicate that the protein-protein interactions are sensitive to changes in the ionic strength. Ligand binding pockets as well as regions between the oligomer interface either compress or expand, affecting both local and distal intermolecular interactions that result in stabilization or destabilization in the protein assembly.
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Affiliation(s)
- Michael R Jones
- Department of Chemistry, Michigan State University, 578 S. Shaw Ln., East Lansing, MI 48824, United States
| | - Joshua Yue
- Department of Chemistry and Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle #305070, Denton, TX 76203-5017, United States
| | - Angela K Wilson
- Department of Chemistry, Michigan State University, 578 S. Shaw Ln., East Lansing, MI 48824, United States; Department of Chemistry and Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle #305070, Denton, TX 76203-5017, United States.
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20
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Gourronc FA, Robertson LW, Klingelhutz AJ. A delayed proinflammatory response of human preadipocytes to PCB126 is dependent on the aryl hydrocarbon receptor. Environ Sci Pollut Res Int 2018; 25:16481-16492. [PMID: 28699004 PMCID: PMC5764822 DOI: 10.1007/s11356-017-9676-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 06/27/2017] [Indexed: 05/10/2023]
Abstract
Inflammation in adipose tissue is recognized as a causative factor in the development of type II diabetes. Adipocyte hypertrophy as well as bacterial and environmental factors have been implicated in causing inflammation in mature adipocytes. Exposure to persistent organic pollutants such as polychlorinated biphenyls (PCBs) has been associated with the development of type II diabetes. We show here that PCB126, a dioxin-like PCB, activates a robust proinflammatory state in fat cell precursors (preadipocytes). The response was found to be dependent on aryl hydrocarbon receptor (AhR) activation, although induction of the response was delayed compared to upregulation of CYP1A1, a classic AhR-responsive gene. Treatment of preadipocytes with a nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) inhibitor partially attenuated the PCB126-induced inflammatory response and partly, but not completely, ameliorated disruption of adipogenesis caused by PCB126. Our results indicate a role for PCB126 in mediating an inflammatory response through AhR in preadipocytes that interferes with adipogenesis.
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Affiliation(s)
- Francoise A Gourronc
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Larry W Robertson
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, 52242, USA
| | - Aloysius J Klingelhutz
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
- Department of Microbiology and Immunology, Carver College of Medicine, The University of Iowa, 2202 MERF, 375 Newton Road, Iowa City, IA, 52242, USA.
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21
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Hudson WH, Vera IMSD, Nwachukwu JC, Weikum ER, Herbst AG, Yang Q, Bain DL, Nettles KW, Kojetin DJ, Ortlund EA. Cryptic glucocorticoid receptor-binding sites pervade genomic NF-κB response elements. Nat Commun 2018; 9:1337. [PMID: 29626214 PMCID: PMC5889392 DOI: 10.1038/s41467-018-03780-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/13/2018] [Indexed: 12/19/2022] Open
Abstract
Glucocorticoids (GCs) are potent repressors of NF-κB activity, making them a preferred choice for treatment of inflammation-driven conditions. Despite the widespread use of GCs in the clinic, current models are inadequate to explain the role of the glucocorticoid receptor (GR) within this critical signaling pathway. GR binding directly to NF-κB itself-tethering in a DNA binding-independent manner-represents the standing model of how GCs inhibit NF-κB-driven transcription. We demonstrate that direct binding of GR to genomic NF-κB response elements (κBREs) mediates GR-driven repression of inflammatory gene expression. We report five crystal structures and solution NMR data of GR DBD-κBRE complexes, which reveal that GR recognizes a cryptic response element between the binding footprints of NF-κB subunits within κBREs. These cryptic sequences exhibit high sequence and functional conservation, suggesting that GR binding to κBREs is an evolutionarily conserved mechanism of controlling the inflammatory response.
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Affiliation(s)
- William H Hudson
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, 30322, USA
- Discovery and Developmental Therapeutics, Winship Cancer Institute, Atlanta, Georgia, 30322, USA
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, 30322, USA
| | - Ian Mitchelle S de Vera
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida, 33458, USA
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, MO, 63104, USA
| | - Jerome C Nwachukwu
- Department of Integrated Structural and Computational Biology, The Scripps Research Institute, Jupiter, Florida, 33458, USA
| | - Emily R Weikum
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, 30322, USA
- Discovery and Developmental Therapeutics, Winship Cancer Institute, Atlanta, Georgia, 30322, USA
| | - Austin G Herbst
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, 30322, USA
| | - Qin Yang
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - David L Bain
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - Kendall W Nettles
- Department of Integrated Structural and Computational Biology, The Scripps Research Institute, Jupiter, Florida, 33458, USA
| | - Douglas J Kojetin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida, 33458, USA
| | - Eric A Ortlund
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, 30322, USA.
- Discovery and Developmental Therapeutics, Winship Cancer Institute, Atlanta, Georgia, 30322, USA.
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22
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Yu M, Chen J, Bao Y, Li J. Genomic analysis of NF-κB signaling pathway reveals its complexity in Crassostrea gigas. Fish Shellfish Immunol 2018; 72:510-518. [PMID: 29162540 DOI: 10.1016/j.fsi.2017.11.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/09/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
NF-κB signaling pathway is an evolutionarily conserved pathway that plays highly important roles in several developmental, cellular and immune response processes. With the recent release of the draft Pacific oyster (Crassostra gigas) genome sequence, we have sought to identify the various components of the NF-κB signaling pathway in these mollusks and investigate their gene structure. We further constructed phylogenetic trees to establish the evolutionary relationship of the oyster proteins with their homologues in vertebrates and invertebrates using BLASTX and neighbor-joining method. We report the presence of two classic NF-κB/Rel homologues in the pacific oyster namely Cgp100 and CgRel, which possess characteristic RHD domain and a consensus nuclear localization signal, similar to mammalian homologues and an additional CgRel-like protein, unique to C. gigas. Further, in addition to two classical IκB homologues, CgIκB1 and CgIκB2, we have identified three atypical IκB family members namely CgIκB3, CgIκB4 and CgBCL3 which lack the IκB degradation motif and consist of only one exon that might have arisen by retrotransposition from CgIκB1. Finally, we report the presence of three IKKs and one NEMO genes in oyster genome, named CgIKK1, CgIKK2, CgIKK3 and CgNEMO, respectively. While CgIKK1 and CgIKK3 domain structure is similar to their mammalian homologues, CgIKK2 was found to lack the HLH and NBD domains. Overall, the high conservation of the NF-κB/Rel, IκB and IKK family components in the pacific oyster and their structural similarity to the vertebrate and invertebrate homologues underline the functional importance of this pathway in regulation of critical cellular processes across species.
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Affiliation(s)
- Mingjia Yu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
| | - Jianming Chen
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
| | - Yongbo Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, China.
| | - Jun Li
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
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23
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Monfoulet LE, Mercier S, Bayle D, Tamaian R, Barber-Chamoux N, Morand C, Milenkovic D. Curcumin modulates endothelial permeability and monocyte transendothelial migration by affecting endothelial cell dynamics. Free Radic Biol Med 2017; 112:109-120. [PMID: 28739530 DOI: 10.1016/j.freeradbiomed.2017.07.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 07/10/2017] [Accepted: 07/21/2017] [Indexed: 01/16/2023]
Abstract
Curcumin is a phenolic compound that exhibits beneficial properties for cardiometabolic health. We previously showed that curcumin reduced the infiltration of immune cells into the vascular wall and prevented atherosclerosis development in mice. This study aimed to investigate the effect of curcumin on monocyte adhesion and transendothelial migration (TEM) and to decipher the underlying mechanisms of these actions. Human umbilical vein endothelial cells (HUVECs) were exposed to curcumin (0.5-1μM) for 3h prior to their activation by Tumor Necrosis Factor alpha (TNF-α). Endothelial permeability, monocyte adhesion and transendothelial migration assays were conducted under static condition and shear stress that mimics blood flow. We further investigated the impact of curcumin on signaling pathways and on the expression of genes using macroarrays. Pre-exposure of endothelial cells to curcumin reduced monocyte adhesion and their transendothelial migration in both static and shear stress conditions. Curcumin also prevented changes in both endothelial permeability and the area of HUVECs when induced by TNF-α. We showed that curcumin modulated the expression of 15 genes involved in the control of cytoskeleton and endothelial junction dynamic. Finally, we showed that curcumin inhibited NF-κB signaling likely through an antagonist interplay with several kinases as suggested by molecular docking analysis. Our findings demonstrate the ability of curcumin to reduce monocyte TEM through a multimodal regulation of the endothelial cell dynamics with a potential benefit on the vascular endothelial function barrier.
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Affiliation(s)
| | - Sylvie Mercier
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, France
| | - Dominique Bayle
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, France
| | - Radu Tamaian
- Research and Development Department, National Institute for Research and Development for Cryogenic and Isotopic Technologies, RO-240050 Râmnicu Vâlcea, Romania; SC Biotech Corp SRL, RO-240050 Râmnicu Vâlcea, Romania
| | - Nicolas Barber-Chamoux
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, France; CHU Clermont-Ferrand, Service de Cardiologie, F-63000 Clermont-Ferrand, France
| | - Christine Morand
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, France
| | - Dragan Milenkovic
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, France
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24
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Del Prete D, Taglialatela-Scafati O, Minassi A, Sirignano C, Cruz C, Bellido ML, Muñoz E, Appendino G. Electrophilic Triterpenoid Enones: A Comparative Thiol-Trapping and Bioactivity Study. J Nat Prod 2017; 80:2276-2283. [PMID: 28753294 DOI: 10.1021/acs.jnatprod.7b00271] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bardoxolone methyl (1) is the quintessential member of triterpenoid cyanoacrylates, an emerging class of bioactive compounds capable of transient covalent binding to thiols. The mechanistic basis for this unusual "pulsed reactivity" profile and the mode of its biological translation are unknown. To provide clues on these issues, a series of Δ1-dehydrooleanolates bearing an electron-withdrawing group at C-2 (7a-m) were prepared from oleanolic acid (3a) and comparatively investigated in terms of reactivity with thiols and bioactivity against a series of electrophile-sensitive transcription factors (Nrf2, NF-κB, STAT3). The emerging picture suggests that the triterpenoid scaffold sharply decreases the reactivity of the enone system by steric encumbrance and that only strongly electrophilic and sterically undemanding substituents such as a cyanide or a carboxylate group can re-establish Michael reactivity, albeit in a transient way for the cyanide group. In general, a substantial dissection between the thiol-trapping ability and the modulation of biological end-points sensitive to thiol alkylation was observed, highlighting the role of shape complementarity for the activity of triterpenoid thia-Michael acceptors.
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Affiliation(s)
- Danilo Del Prete
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
| | | | - Alberto Minassi
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
| | - Carmina Sirignano
- Dipartimento di Farmacia, Università di Napoli Federico II , Via Montesano 49, 80131 Napoli, Italy
| | - Cristina Cruz
- VivaCell Biotechnology España, Parque Científico Tecnológico de Córdoba , 14014 Córdoba, Spain
| | - Maria L Bellido
- VivaCell Biotechnology España, Parque Científico Tecnológico de Córdoba , 14014 Córdoba, Spain
| | - Eduardo Muñoz
- Maimonides Biomedical Research Institute of Córdoba, Reina Sofía University Hospital, Department of Cell Biology, Physiology and Immunology, University of Córdoba , Avenida Menéndez Pidal s/n, 14004 Córdoba, Spain
| | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Largo Donegani 2, 28100 Novara, Italy
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25
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Abstract
Frutescones H-R (1-11), new sesqui- or monoterpene-based meroterpenoids, were isolated from the aerial parts of Baeckea frutescens. Their structures and absolute configurations were established by means of spectroscopic analyses (HRESIMS, 1D and 2D NMR, and ECD), as well as single-crystal X-ray crystallography of 1, (-)-7, and 9. The anti-inflammatory activities of all isolates were evaluated by measuring their inhibitory effects on NO production in LPS-stimulated RAW 264.7 macrophages, and the structure-activity relationships of 1-11 are also discussed. Compound 8 exhibited anti-inflammatory activity with an IC50 value of 0.36 μM, which might be related to the regulation of the NF-κB signaling pathway via the suppression of p65 nuclear translocation and the consequent decrease of IL-6 and TNF-α.
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Affiliation(s)
- Ji-Qin Hou
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Cui Guo
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Jian-Juan Zhao
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Yang-Yang Dong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Xiao-Long Hu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Qi-Wei He
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Bao-Bao Zhang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Ming Yan
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
| | - Hao Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, and ‡Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University , Nanjing 210009, People's Republic of China
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26
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Popović V, Goeman JL, Bougarne N, Eyckerman S, Heyerick A, De Bosscher K, Van der Eycken J. Involvement of the Glucocorticoid Receptor in Pro-inflammatory Transcription Factor Inhibition by Daucane Esters from Laserpitium zernyi. J Nat Prod 2017; 80:1505-1513. [PMID: 28489375 DOI: 10.1021/acs.jnatprod.7b00012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Species of the genus Laserpitium have been used traditionally to treat inflammation and infection. From the herb of Laserpitium zernyi, six new compounds were isolated and their structures elucidated (using IR, NMR, HRMS data) as derivatives of 8-daucene-2,4,10-triol (1, 2, and 4), 7-daucene-2,4,10-triol (3), a lapiferin derivative featuring a C-2 ester moiety (5), and a daucane featuring an exomethylene group at C-8 (6). Also isolated were the rare daucanes vaginatin (7) and laserpitin (8). In a search for selective glucocorticoid receptor (GR) modulators, the compounds were tested for their capacity to inhibit NF-κB and AP-1 pro-inflammatory factors and for a potential competitive effect on a dexamethasone (Dex)-induced GR-driven glucocorticoid response element (GRE) reporter gene. The new 2β-angeloyloxy-10α-acetoxy-8-daucene-2,4,10-triol (2) significantly inhibited transactivation of both NF-κB and AP-1, while vaginatin (7) was the most active of the compounds tested in blocking AP-1. Both compounds competitively repressed Dex-induced GRE-driven promoter activities, indicative of a potential role for GR. In addition, a decreased potential to inhibit NF-κB was apparent in GR knockout A549 cells. In line with the transcriptional assays, compounds 2 and 7 also significantly lowered CCL-2 chemokine production, albeit to a lesser extent than Dex. The results suggest that daucanes may be interesting candidates in the search for compounds with GR-modulating activities.
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Affiliation(s)
- Višnja Popović
- Laboratory for Organic and Bio-Organic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 (S.4), B-9000 Ghent, Belgium
- Receptor Research Laboratories, Nuclear Receptor Lab, VIB-UGent Center for Medical Biotechnology , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
| | - Jan L Goeman
- Laboratory for Organic and Bio-Organic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 (S.4), B-9000 Ghent, Belgium
| | - Nadia Bougarne
- Receptor Research Laboratories, Nuclear Receptor Lab, VIB-UGent Center for Medical Biotechnology , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
| | - Sven Eyckerman
- Department of Biochemistry, Ghent University , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
- VIB-UGent Center for Medical Biotechnology , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
| | - Arne Heyerick
- Reliable Cancer Therapies , Boechoutlaan 221, B-1853 Strombeek-Bever, Belgium
| | - Karolien De Bosscher
- Receptor Research Laboratories, Nuclear Receptor Lab, VIB-UGent Center for Medical Biotechnology , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
- Department of Biochemistry, Ghent University , Albert Baertsoenkaai 3, B-9000 Ghent, Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bio-Organic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 (S.4), B-9000 Ghent, Belgium
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27
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Kwon IS, Kwak JH, Pyo S, Lee HW, Kim A, Schmitz FJ. Oscarellin, an Anthranilic Acid Derivative from a Philippine Sponge, Oscarella stillans, as an Inhibitor of Inflammatory Cytokines in Macrophages. J Nat Prod 2017; 80:149-155. [PMID: 28093915 DOI: 10.1021/acs.jnatprod.6b00787] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new anthranilic acid derivative (1) was isolated from a Philippine sponge, Oscarella stillans (Bergquist and Kelly). The structure of compound 1, named oscarellin, was determined as 2-amino-3-(3'-aminopropoxy)benzoic acid from spectroscopic data and confirmed by synthesis. We examined the immunomodulating effect of compound 1 and its mechanism in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Our data indicated that the expression of tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 were significantly reduced by the pretreatment of 1 (0.1-10 μM) for 2 h. In addition, compound 1 suppressed activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and c-Jun NH2-termimal kinase (JNK), but not p38 mitogen-activated protein kinase (MAPK) in LPS-stimulated RAW 264.7 cells. Compound 1 abrogated LPS-induced nuclear factor-κB (NF-κB) and activator protein-1 (AP-1) activities, whereas the induction of activating transcription factor-3 (ATF-3) was increased. Taken together, our results suggest that compound 1 attenuates pro-inflammatory cytokines via the suppression of JNK, ERK, AP-1, and NF-κB and the activation of the ATF-3 signaling pathway.
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Affiliation(s)
- Ii-Seul Kwon
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Jong Hwan Kwak
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Suhkneung Pyo
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Hee-Weon Lee
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - AeRyon Kim
- Department of Chemistry and Biochemistry, University of Oklahoma , Norman, Oklahoma 73019, United States
| | - Francis J Schmitz
- Department of Chemistry and Biochemistry, University of Oklahoma , Norman, Oklahoma 73019, United States
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Abstract
Systemic inflammation and localized macrophage infiltration have been implicated in cardiovascular pathologies, including coronary artery disease, carotid atherosclerosis, heart failure, obesity-associated heart dysfunction, and cardiac fibrosis. Inflammation induces macrophage infiltration and activation and release of cytokines and chemokines, causing tissue dysfunction by instigating a positive feedback loop that further propagates inflammation. Cytosolic adaptor caspase recruitment domain family, member 9 (CARD9) is a protein expressed primarily by dendritic cells, neutrophils, and macrophages, in which it mediates cytokine secretion. The purpose of this review is to highlight the role of CARD9 as a potential target in inflammation-related cardiovascular pathologies.
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Affiliation(s)
- Matthew R Peterson
- School of Pharmacy, University of Wyoming, College of Health Sciences, Laramie, WY, USA
| | - Samantha E Haller
- School of Pharmacy, University of Wyoming, College of Health Sciences, Laramie, WY, USA
| | - Jun Ren
- School of Pharmacy, University of Wyoming, College of Health Sciences, Laramie, WY, USA
| | - Sreejayan Nair
- School of Pharmacy, University of Wyoming, College of Health Sciences, Laramie, WY, USA
| | - Guanglong He
- School of Pharmacy, University of Wyoming, College of Health Sciences, Laramie, WY, USA
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Wang H, Zhu Y, Xu X, Wang X, Hou Q, Xu Q, Sun Z, Mi Y, Hu C. Ctenopharyngodon idella NF-κB subunit p65 modulates the transcription of IκBα in CIK cells. Fish & Shellfish Immunology 2016; 54:564-572. [PMID: 27142933 DOI: 10.1016/j.fsi.2016.04.132] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/20/2016] [Accepted: 04/29/2016] [Indexed: 06/05/2023]
Abstract
NF-κB is an important transcription factor for regulating the multiple inflammatory and immune related gene transcription. It can bind with the nuclear factor κB site within the promoter of target genes to regulate their transcriptions. p65, the all-important subunit of NF-κB, is ubiquitously expressed in cells. In the present study, we cloned and identified the p65 subunit from grass carp (Ctenopharyngodon idella) (named Cip65) by homologous cloning and RACE technique. The full length of Cip65 cDNA is 2481 bp along with 9 bp 5' UTR, 639 bp 3' UTR and the largest open reading frame (1833 bp) encoding a polypeptide of 610 amino acids with a well conserved Rel-homology domain (RHD) in N-terminal and a putative transcription activation domain (TAD) in C-terminal. Cip65 gathers with other teleost p65 proteins to form a fish-specific clade clearly distinct from those of mammalian and amphibian counterparts on the phylogenetic tree. In CIK (C. idellus kidney) cells, the expression of Cip65 was significantly up-regulated under the stimulation with Poly I:C. As one member of the NF-κB inhibitor protein (IκB) family, IκBα can dominate the activity of NF-κB by interacting with it. To study the molecular mechanisms of negative feedback loop of NF-κB signaling in fish, we cloned grass carp IκBα (CiIκBα) promoter sequence. CiIκBα promoter is 414 bp in length containing two RelA binding sites and a putative atypical TATA-box. Meanwhile, Cip65 and its mutant proteins including C-terminus deletion mutant of Cip65 (Cip65-ΔC) and N-terminus deletion mutant of Cip65 (Cip65-ΔN) were expressed in Escherichia coli BL21 and purified by affinity chromatography with the Ni-NTA His-Bind resin. In vitro, Cip65 rather than Cip65-ΔC and Cip65-ΔN showed high affinity with CiIκBα promoter sequence by gel mobility shift assays. In vivo, the cotransfection of pcDNA3.1-Cip65 (or pcDNA3.1-Cip65-ΔC, pcDNA3.1-Cip65-ΔN respectively) with pGL3-CiIκBα and pRL-TK renilla luciferase plasmid into CIK cells showed that pcDNA3.1-Cip65 rather than pcDNA3.1-Cip65-ΔC and pcDNA3.1-Cip65-ΔN, can increase the luciferase activity. Taken together, these results suggested that Cip65 can regulate the expression of CiIκBα and works as a negative feedback loop in NF-κB pathway.
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Affiliation(s)
- Haizhou Wang
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China; College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
| | - Youlin Zhu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Xiaowen Xu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Xiangqin Wang
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Qunhao Hou
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Qun Xu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Zhicheng Sun
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Yichuan Mi
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China
| | - Chengyu Hu
- Department of Bioscience, College of Life Science, Nanchang University, Nanchang 330031, China.
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Zheng J, Son DJ, Gu SM, Woo JR, Ham YW, Lee HP, Kim WJ, Jung JK, Hong JT. Piperlongumine inhibits lung tumor growth via inhibition of nuclear factor kappa B signaling pathway. Sci Rep 2016; 6:26357. [PMID: 27198178 PMCID: PMC4873819 DOI: 10.1038/srep26357] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/29/2016] [Indexed: 12/11/2022] Open
Abstract
Piperlongumine has anti-cancer activity in numerous cancer cell lines via various signaling pathways. But there has been no study regarding the mechanisms of PL on the lung cancer yet. Thus, we evaluated the anti-cancer effects and possible mechanisms of PL on non-small cell lung cancer (NSCLC) cells in vivo and in vitro. Our findings showed that PL induced apoptotic cell death and suppressed the DNA binding activity of NF-κB in a concentration dependent manner (0-15 μM) in NSCLC cells. Docking model and pull down assay showed that PL directly binds to the DNA binding site of nuclear factor-κB (NF-κB) p50 subunit, and surface plasmon resonance (SPR) analysis showed that PL binds to p50 concentration-dependently. Moreover, co-treatment of PL with NF-κB inhibitor phenylarsine oxide (0.1 μM) or p50 siRNA (100 nM) augmented PL-induced inhibitory effect on cell growth and activation of Fas and DR4. Notably, co-treatment of PL with p50 mutant plasmid (C62S) partially abolished PL-induced cell growth inhibition and decreased the enhanced expression of Fas and DR4. In xenograft mice model, PL (2.5-5 mg/kg) suppressed tumor growth of NSCLC dose-dependently. Therefore, these results indicated that PL could inhibit lung cancer cell growth via inhibition of NF-κB signaling pathway in vitro and in vivo.
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Affiliation(s)
- Jie Zheng
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Dong Ju Son
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Sun Mi Gu
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Ju Rang Woo
- New Drug Development Center, KBio, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Young Wan Ham
- Department of Chemistry, Utah Valley University, 800 West University Parkway, Orem, UT 84508, USA
| | - Hee Pom Lee
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Wun Jae Kim
- College of Medicine, Chungbuk National University, Chungdae-ro 1, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea
| | - Jae Kyung Jung
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk 28160, Republic of Korea
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Chen L, Li S, Guo X, Xie P, Chen J. The role of GSH in microcystin-induced apoptosis in rat liver: Involvement of oxidative stress and NF-κB. Environ Toxicol 2016; 31:552-560. [PMID: 25410294 DOI: 10.1002/tox.22068] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 10/20/2014] [Accepted: 10/31/2014] [Indexed: 06/04/2023]
Abstract
Microcystins (MCs) are potent and specific hepatotoxins produced by cyanobacteria in eutrophic waters, representing a health hazard to animals and humans. The objectives of this study are to determine the relationship between oxidative stress and NF-κB activity in MC-induced apoptosis in rat liver and the role of glutathione (GSH). Sprague-Dawley rats were intraperitoneally (i.p.) injected with microcystin-LR (MC-LR) at 0.25 and 0.5 LD50 with or without pretreatment of buthionine-(S,R)-sulfoximine (BSO), a specific GSH synthesis inhibitor. MC-LR induced time-dependent alterations of GSH levels in rat liver. Increased malondialdehyde (MDA) and significant changes of antioxidant enzymes including GSH peroxidase (GPX) and GSH reductase (GR) were also observed, particularly at 24 h post-exposure. The results indicated that acute exposure to MC-LR induced oxidative stress, and GSH depletion (BSO pretreatment) enhanced the level of oxidative stress. Furthermore, the modulation of pro-apoptotic gene p53 and Bax and anti-apoptotic gene Bcl-2 was observed in 0.5 LD50 group at 24 h, and the alteration was more pronounced by BSO injection before MC-LR treatment, suggesting that GSH played a protective role against MC-induced toxicity. Additionally, electrophoretic mobility shift assay (EMSA) showed that NF-κB was induced at 0.25 LD50 but inhibited at 0.5 LD50 . The above results indicated that the possible crosstalk of oxidative stress and NF-κB activity was associated with MC-LR-induced hepatocytes apoptosis in vivo. Our data will provide a new perspective for understanding the mechanisms of MC-induced liver injury.
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Affiliation(s)
- Liang Chen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shangchun Li
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaochun Guo
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ping Xie
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Jun Chen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
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Calegari-Silva TC, Vivarini ÁC, Miqueline M, Dos Santos GRRM, Teixeira KL, Saliba AM, Nunes de Carvalho S, de Carvalho L, Lopes UG. The human parasite Leishmania amazonensis downregulates iNOS expression via NF-κB p50/p50 homodimer: role of the PI3K/Akt pathway. Open Biol 2015; 5:150118. [PMID: 26400473 PMCID: PMC4593669 DOI: 10.1098/rsob.150118] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 08/28/2015] [Indexed: 12/12/2022] Open
Abstract
Leishmania amazonensis activates the NF-κB transcriptional repressor homodimer (p50/p50) and promotes nitric oxide synthase (iNOS) downregulation. We investigated the role of PI3K/Akt in p50/p50 NF-κB activation and the effect on iNOS expression in L. amazonensis infection. The increased occupancy of p50/p50 on the iNOS promoter of infected macrophages was observed and we demonstrated that both p50/p50 NF-κB induction and iNOS downregulation in infected macrophages depended on PI3K/Akt activation. Importantly, the intracellular growth of the parasite was also impaired during PI3K/Akt signalling inhibition and in macrophages knocked-down for Akt 1 expression. It was also observed that the increased nuclear levels of p50/p50 in L. amazonensis-infected macrophages were associated with reduced phosphorylation of 907 Ser p105, the precursor of p50. Corroborating these data, we demonstrated the increased levels of phospho-9 Ser GSK3β in infected macrophages, which is associated with GSK3β inhibition and, consequently, its inability to phosphorylate p105. Remarkably, we found that the levels of pPTEN 370 Ser, a negative regulator of PI3K, increased due to L. amazonensis infection. Our data support the notion that PI3K/Akt activity is sustained during the parasite infection, leading to NF-κB 105 phosphorylation and further processing to originate p50/p50 homodimers and the consequent downregulation of iNOS expression.
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Affiliation(s)
- Teresa C Calegari-Silva
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
| | - Áislan C Vivarini
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
| | - Marina Miqueline
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
| | - Guilherme R R M Dos Santos
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
| | - Karina Luiza Teixeira
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
| | - Alessandra Mattos Saliba
- Departamento de Microbiologia e Parasitologia, Da Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Simone Nunes de Carvalho
- Laboratório Cultura de Células, Departamento de Histologia e Embriologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laís de Carvalho
- Laboratório Cultura de Células, Departamento de Histologia e Embriologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ulisses G Lopes
- Laboratório de Parasitologia Molecular, Instituto de Biofísica Carlos Chagas Filho, CCS, UFRJ, Rio de Janeiro, Brazil
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33
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Hsiang CY, Cheng HM, Lo HY, Li CC, Chou PC, Lee YC, Ho TY. Ginger and Zingerone Ameliorate Lipopolysaccharide-Induced Acute Systemic Inflammation in Mice, Assessed by Nuclear Factor-κB Bioluminescent Imaging. J Agric Food Chem 2015; 63:6051-8. [PMID: 26073629 DOI: 10.1021/acs.jafc.5b01801] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ginger is a commonly used spice in cooking. In this study, we comprehensively evaluated the anti-inflammatory activities of ginger and its component zingerone in lipopolysaccharide (LPS)-induced acute systemic inflammation in mice via nuclear factor-κB (NF-κB) bioluminescent imaging. Ginger and zingerone significantly suppressed LPS-induced NF-κB activities in cells in a dose-dependent manner, and the maximal inhibition (84.5% ± 3.5% and 96.2% ± 0.6%) was observed at 100 μg/mL ginger and zingerone, respectively. Moreover, dietary ginger and zingerone significantly reduced LPS-induced proinflammatory cytokine production in sera by 62.9% ± 18.2% and 81.3% ± 6.2%, respectively, and NF-κB bioluminescent signals in whole body by 26.9% ± 14.3% and 38.5% ± 6.2%, respectively. In addition, ginger and zingerone suppressed LPS-induced NF-κB-driven luminescent intensities in most organs, and the maximal inhibition by ginger and zingerone was observed in small intestine. Immunohistochemical staining further showed that ginger and zingerone decreased interleukin-1β (IL-1β)-, CD11b-, and p65-positive areas in jejunum. In conclusion, our findings suggested that ginger and zingerone were likely to be broad-spectrum anti-inflammatory agents in most organs that suppressed the activation of NF-κB, the production of IL-1β, and the infiltration of inflammatory cells in mice.
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Affiliation(s)
- Chien-Yun Hsiang
- †Department of Microbiology, China Medical University, Taichung 40402, Taiwan
| | - Hui-Man Cheng
- ‡School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Hsin-Yi Lo
- §Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Chia-Cheng Li
- ∥Graduate Institute of Cancer Biology, China Medical University, Taichung 40402, Taiwan
| | - Pei-Chi Chou
- ‡School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Yu-Chen Lee
- ⊥Graduate Institute of Acupuncture Science, China Medical University, Taichung 40402, Taiwan
| | - Tin-Yun Ho
- §Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
- ∇Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
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Arayachukiat S, Seemork J, Pan-In P, Amornwachirabodee K, Sangphech N, Sansureerungsikul T, Sathornsantikun K, Vilaivan C, Shigyou K, Pienpinijtham P, Vilaivan T, Palaga T, Banlunara W, Hamada T, Wanichwecharungruang S. Bringing macromolecules into cells and evading endosomes by oxidized carbon nanoparticles. Nano Lett 2015; 15:3370-6. [PMID: 25849219 DOI: 10.1021/acs.nanolett.5b00696] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A great challenge exists in finding safe, simple, and effective delivery strategies to bring matters across cell membrane. Popular methods such as viral vectors, positively charged particles and cell penetrating peptides possess some of the following drawbacks: safety issues, lysosome trapping, limited loading capacity, and toxicity, whereas electroporation produces severe damages on both cargoes and cells. Here, we show that a serendipitously discovered, relatively nontoxic, water dispersible, stable, negatively charged, oxidized carbon nanoparticle, prepared from graphite, could deliver macromolecules into cells, without getting trapped in a lysosome. The ability of the particles to induce transient pores on lipid bilayer membranes of cell-sized liposomes was demonstrated. Delivering 12-base-long pyrrolidinyl peptide nucleic acids with d-prolyl-(1S,2S)-2-aminocyclopentanecarboxylic acid backbone (acpcPNA) complementary to the antisense strand of the NF-κB binding site in the promoter region of the Il6 gene into the macrophage cell line, RAW 264.7, by our particles resulted in an obvious accumulation of the acpcPNAs in the nucleus and decreased Il6 mRNA and IL-6 protein levels upon stimulation. We anticipate this work to be a starting point in a new drug delivery strategy, which involves the nanoparticle that can induce a transient pore on the lipid bilayer membrane.
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Affiliation(s)
- Sunatda Arayachukiat
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jiraporn Seemork
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Porntip Pan-In
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kittima Amornwachirabodee
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Naunpun Sangphech
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Titiporn Sansureerungsikul
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kamonluck Sathornsantikun
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chotima Vilaivan
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kazuki Shigyou
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Prompong Pienpinijtham
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tirayut Vilaivan
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tanapat Palaga
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Wijit Banlunara
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tsutomu Hamada
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Supason Wanichwecharungruang
- †Macromolecular Science Program, Faculty of Science, Chulalongkorn University (CU), ‡Program in Petrochemistry, Faculty of Science, CU, §Department of Chemistry, Faculty of Science, CU, ∥Department of Microbiology, Faculty of Science, and Interdisciplinary Program in Medical Microbiology, CU, ⊥School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), ¶Department of Pathology, Faculty of Veterinary Science, CU, ∇Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
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Patil KR, Mohapatra P, Patel HM, Goyal SN, Ojha S, Kundu CN, Patil CR. Pentacyclic Triterpenoids Inhibit IKKβ Mediated Activation of NF-κB Pathway: In Silico and In Vitro Evidences. PLoS One 2015; 10:e0125709. [PMID: 25938234 PMCID: PMC4418667 DOI: 10.1371/journal.pone.0125709] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 03/17/2015] [Indexed: 01/02/2023] Open
Abstract
Pentacyclic Triterpenoids (PTs) and their analogues as well as derivatives are emerging as important drug leads for various diseases. They act through a variety of mechanisms and a majority of them inhibit the nuclear factor kappa-beta (NF-κB) signaling pathway. In this study, we examined the effects of the naturally occurring PTs on IκB kinase-β (IKKβ), which has great scientific relevance in the NF-κB signaling pathway. On virtual screening, 109 PTs were screened through the PASS (prediction of activity spectra of substances) software for prediction of NF-κB inhibitory activity followed by docking on the NEMO/IKKβ association complex (PDB: 3BRV) and testing for compliance with the softened Lipinski’s Rule of Five using Schrodinger (LLC, New York, USA). Out of the projected 45 druggable PTs, Corosolic Acid (CA), Asiatic Acid (AA) and Ursolic Acid (UA) were assayed for IKKβ kinase activity in the cell free medium. The UA exhibited a potent IKKβ inhibitory effect on the hotspot kinase assay with IC50 of 69 μM. Whereas, CA at 50 μM concentration markedly reduced the NF-κB luciferase activity and phospho-IKKβ protein expressions. The PTs tested, attenuated the expression of the NF-κB cascade proteins in the LPS-stimulated RAW 264.7 cells, prevented the phosphorylation of the IKKα/β and blocked the activation of the Interferon-gamma (IFN-γ). The results suggest that the IKKβ inhibition is the major mechanism of the PTs-induced NF-κB inhibition. PASS predictions along with in-silico docking against the NEMO/IKKβ can be successfully applied in the selection of the prospective NF-κB inhibitory downregulators of IKKβ phosphorylation.
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Affiliation(s)
- Kalpesh R. Patil
- Department of Pharmacology, H. R. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dist- Dhule, Maharashtra, India
| | - Purusottam Mohapatra
- Cancer Biology Laboratory, KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Harun M. Patel
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dist- Dhule, Maharashtra, India
| | - Sameer N. Goyal
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dist- Dhule, Maharashtra, India
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates, UAE
| | - Chanakya N. Kundu
- Cancer Biology Laboratory, KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
- * E-mail: (CRP); (CNK); (KRP)
| | - Chandragouda R. Patil
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Dist- Dhule, Maharashtra, India
- * E-mail: (CRP); (CNK); (KRP)
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Kadioglu O, Nass J, Saeed MEM, Schuler B, Efferth T. Kaempferol Is an Anti-Inflammatory Compound with Activity towards NF-κB Pathway Proteins. Anticancer Res 2015; 35:2645-2650. [PMID: 25964540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND The nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway is critical in inflammation, proliferation and carcinogenesis. There exist three main players in this pathway. The inhibitor of NF-κB (IκB), IκB kinase (IκK)- NF-κB essential modulator (NEMO) complex and NF-κB. The IkK-NEMO complex activates NF-κB via phosphorylation of Iκβ and, eventually, leads to its proteasomal degradation. This leads to nuclear translocation of NF-κB and activation of target genes, such as cyclooxygenases and interleukins. The identification of anti-inflammatory compounds might be an effective strategy to target inflammatory disorders and cancer. MATERIALS AND METHODS In the present investigation, kaempferol was investigated in terms of its effect on NF-κB activity with a SEAP-driven reporter cell line, NF-κB DNA binding with electromobility shift assay (EMSA) and translocation of NF-κB-p65 from cytosol to the nucleus with western blot in Jurkat cells. RESULTS Kaempferol revealed anti-inflammatory activity, as shown in vitro and in silico. Molecular docking studies of kaempferol revealed comparable binding energies and similar docking poses on target proteins such as MG-132, a known NF-κB inhibitor. CONCLUSION We conclude that kaempferol possesses anti-inflammatory activity.
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Affiliation(s)
- Onat Kadioglu
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Janine Nass
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Mohamed E M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Barbara Schuler
- Department of Pharmaceutical Biology and Biotechnology, Institute of Pharmaceutical Sciences, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
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Liu B, Sun L, Liu Q, Gong C, Yao Y, Lv X, Lin L, Yao H, Su F, Li D, Zeng M, Song E. A cytoplasmic NF-κB interacting long noncoding RNA blocks IκB phosphorylation and suppresses breast cancer metastasis. Cancer Cell 2015; 27:370-81. [PMID: 25759022 DOI: 10.1016/j.ccell.2015.02.004] [Citation(s) in RCA: 684] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 12/19/2014] [Accepted: 02/10/2015] [Indexed: 02/05/2023]
Abstract
NF-κB is a critical link between inflammation and cancer, but whether long non-coding RNAs (lncRNAs) regulate its activation remains unknown. Here, we identify an NF-KappaB Interacting LncRNA (NKILA), which is upregulated by NF-κB, binds to NF-κB/IκB, and directly masks phosphorylation motifs of IκB, thereby inhibiting IKK-induced IκB phosphorylation and NF-κB activation. Unlike DNA that is dissociated from NF-κB by IκB, NKILA interacts with NF-κB/IκB to form a stable complex. Importantly, NKILA is essential to prevent over-activation of NF-κB pathway in inflammation-stimulated breast epithelial cells. Furthermore, low NKILA expression is associated with breast cancer metastasis and poor patient prognosis. Therefore, lncRNAs can directly interact with functional domains of signaling proteins, serving as a class of NF-κB modulators to suppress cancer metastasis.
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Affiliation(s)
- Bodu Liu
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Gene Engineering of Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Lijuan Sun
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Gene Engineering of Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiang Liu
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Chang Gong
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Yandan Yao
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Xiaobin Lv
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Ling Lin
- Department of Internal Medicine, The First Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Herui Yao
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Fengxi Su
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Dangsheng Li
- Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Musheng Zeng
- State Key Laboratory of Oncology in Southern China, Cancer Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Erwei Song
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Key Laboratory of Gene Engineering of Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
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Fatima A, Abdul ABH, Abdullah R, Karjiban RA, Lee VS. Binding mode analysis of zerumbone to key signal proteins in the tumor necrosis factor pathway. Int J Mol Sci 2015; 16:2747-66. [PMID: 25629232 PMCID: PMC4346863 DOI: 10.3390/ijms16022747] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 01/07/2015] [Indexed: 12/24/2022] Open
Abstract
Breast cancer is the second most common cancer among women worldwide. Several signaling pathways have been implicated as causative and progression agents. The tumor necrosis factor (TNF) α protein plays a dual role in promoting and inhibiting cancer depending largely on the pathway initiated by the binding of the protein to its receptor. Zerumbone, an active constituent of Zingiber zerumbet, Smith, is known to act on the tumor necrosis factor pathway upregulating tumour necrosis factor related apoptosis inducing ligand (TRAIL) death receptors and inducing apoptosis in cancer cells. Zerumbone is a sesquiterpene that is able to penetrate into the hydrophobic pockets of proteins to exert its inhibiting activity with several proteins. We found a good binding with the tumor necrosis factor, kinase κB (IKKβ) and the Nuclear factor κB (NF-κB) component proteins along the TNF pathway. Our results suggest that zerumbone can exert its apoptotic activities by inhibiting the cytoplasmic proteins. It inhibits the IKKβ kinase that activates the NF-κB and also binds to the NF-κB complex in the TNF pathway. Blocking both proteins can lead to inhibition of cell proliferating proteins to be downregulated and possibly ultimate induction of apoptosis.
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Affiliation(s)
- Ayesha Fatima
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Ahmad Bustamam Hj Abdul
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Rasedee Abdullah
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Roghayeh Abedi Karjiban
- Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Vannajan Sanghiran Lee
- Department of Chemistry, Faculty of Science, University Malaya, Petaling Jaya, 50603 Selangor, Malaysia.
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Jamal MS, Parveen S, Beg MA, Suhail M, Chaudhary AGA, Damanhouri GA, Abuzenadah AM, Rehan M. Anticancer compound plumbagin and its molecular targets: a structural insight into the inhibitory mechanisms using computational approaches. PLoS One 2014; 9:e87309. [PMID: 24586269 PMCID: PMC3937309 DOI: 10.1371/journal.pone.0087309] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 12/19/2013] [Indexed: 12/31/2022] Open
Abstract
Plumbagin (5-hydroxy-2-methyl-1,4-naphthoquinone) is a naphthoquinone derivative from the roots of plant Plumbago zeylanica and belongs to one of the largest and diverse groups of plant metabolites. The anticancer and antiproliferative activities of plumbagin have been observed in animal models as well as in cell cultures. Plumbagin exerts inhibitory effects on multiple cancer-signaling proteins, however, the binding mode and the molecular interactions have not yet been elucidated for most of these protein targets. The present study is the first attempt to provide structural insights into the binding mode of plumbagin to five cancer signaling proteins viz. PI3Kγ, AKT1/PKBα, Bcl-2, NF-κB, and Stat3 using molecular docking and (un)binding simulation analysis. We validated plumbagin docking to these targets with previously known important residues. The study also identified and characterized various novel interacting residues of these targets which mediate the binding of plumbagin. Moreover, the exact modes of inhibition when multiple mode of inhibition existed was also shown. Results indicated that the engaging of these important interacting residues in plumbagin binding leads to inhibition of these cancer-signaling proteins which are key players in the pathogenesis of cancer and thereby ceases the progression of the disease.
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Affiliation(s)
- Mohammad S. Jamal
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Shadma Parveen
- Bareilly College, M.J.P. Rohilkhand University, Bareilly, U.P., India
| | - Mohd A. Beg
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Mohd Suhail
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Adeel G. A. Chaudhary
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Ghazi A. Damanhouri
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Adel M. Abuzenadah
- KACST Technology Innovation Center in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Mohd Rehan
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- * E-mail:
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40
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Fedosyuk S, Grishkovskaya I, de Almeida Ribeiro E, Skern T. Characterization and structure of the vaccinia virus NF-κB antagonist A46. J Biol Chem 2014; 289:3749-62. [PMID: 24356965 PMCID: PMC3916572 DOI: 10.1074/jbc.m113.512756] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 12/14/2013] [Indexed: 01/07/2023] Open
Abstract
Successful vaccinia virus (VACV) replication in the host requires expression of viral proteins that interfere with host immunity, such as antagonists of the activation of the proinflammatory transcription factor NF-κB. Two such VACV proteins are A46 and A52. A46 interacts with the Toll-like receptor/interleukin-1R (TIR) domain of Toll-like receptors and intracellular adaptors such as MAL (MyD88 adapter-like), TRAM (TIR domain-containing adapter-inducing interferon-β (TRIF)-related adaptor molecule), TRIF, and MyD88, whereas A52 binds to the downstream signaling components TRAF6 and IRAK2. Here, we characterize A46 biochemically, determine by microscale thermophoresis binding constants for the interaction of A46 with the TIR domains of MyD88 and MAL, and present the 2.0 Å resolution crystal structure of A46 residues 87-229. Full-length A46 behaves as a tetramer; variants lacking the N-terminal 80 residues are dimeric. Nevertheless, both bind to the Toll-like receptor domains of MAL and MyD88 with KD values in the low μm range. Like A52, A46 also shows a Bcl-2-like fold but with biologically relevant differences from that of A52. Thus, A46 uses helices α4 and α6 to dimerize, compared with the α1-α6 face used by A52 and other Bcl-2 like VACV proteins. Furthermore, the loop between A46 helices α4-α5 is flexible and shorter than in A52; there is also evidence for an intramolecular disulfide bridge between consecutive cysteine residues. We used molecular docking to propose how A46 interacts with the BB loop of the TRAM TIR domain. Comparisons of A46 and A52 exemplify how subtle changes in viral proteins with the same fold lead to crucial differences in biological activity.
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Affiliation(s)
- Sofiya Fedosyuk
- From the Max F. Perutz Laboratories, Medical University of Vienna, Dr. Bohr-Gasse 9/3, A-1030 Vienna, Austria and
| | - Irina Grishkovskaya
- Max F. Perutz Laboratories, University of Vienna, Department of Structural and Computational Biology, Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Euripedes de Almeida Ribeiro
- Max F. Perutz Laboratories, University of Vienna, Department of Structural and Computational Biology, Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Tim Skern
- From the Max F. Perutz Laboratories, Medical University of Vienna, Dr. Bohr-Gasse 9/3, A-1030 Vienna, Austria and
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41
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Caperna TJ, Shannon AE, Garrett WM, Ramsay TG, Blomberg LA, Elsasser TH. Identification and characterization of a nuclear factor-κ B-p65 proteolytic fragment in nuclei of porcine hepatocytes in monolayer culture. Domest Anim Endocrinol 2013; 45:154-62. [PMID: 24011531 DOI: 10.1016/j.domaniend.2013.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 08/12/2013] [Accepted: 08/12/2013] [Indexed: 01/12/2023]
Abstract
Hepatic responses to proinflammatory signals are controlled by the activation of several transcription factors, including, nuclear factor-κ B (NF-κB). In this study, hepatocytes prepared from suckling pigs and maintained in serum-free monolayer culture were used to define a novel proinflammatory cytokine-specific NF-κB subunit modification. The immunoreactive p65 protein was detected by Western blot analysis at the appropriate molecular weight in the cytosol of control cultures and those incubated with tumor necrosis factor-α (TNF). However, in nuclei, the p65 antisera cross-reacted with a protein of approximately 38 kDa (termed p38) after TNF addition, which was not observed in the cytosol of control or cytokine-treated cells. Specifically, incubation with TNF also resulted in phosphorylation (P < 0.05) of the inhibitor complex protein (IκB), whereas incubation with other cytokines, IL-6, IL-17a, or oncostatin M was not associated with either phosphorylation of IκB or nuclear translocation of p65. Intracellular endothelial nitric oxide synthase was deceased (P < 0.05) and plasminogen activator inhibitor-1 secretion was increased (P < 0.05) after TNF incubation. The TNF-induced p38 protein was purified from hepatocyte nuclei by immunoprecipitation, concentrated by electrophoresis, and subsequently analyzed by mass spectrometry. Ten unique NF-κB p65 peptides were identified after digestion with trypsin and chymotrypsin; however, all were mapped to the N-terminus and within the first 310 amino acid residues of the intact p65 protein. Although low molecular weight immunoreactive p65 molecules were previously observed in various human and rodent systems, this is the first report to positively identify the p38 fragment within hepatocyte nuclei or after specific cytokine (TNF) induction.
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Affiliation(s)
- T J Caperna
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, USDA, Agricultural Research Service, Bldg 200, Rm 202, BARC-East, Beltsville, MD 20705, USA.
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Abstract
Syntheses of two 6,12-guaianolide analogs are reported within. The scope of the tandem allylboration/lactonization chemistry is expanded to provide a functionalized allene-yne-containing α-methylene butyrolactone that undergoes a Rh(I)-catalyzed cyclocarbonylation reaction to afford a 5-7-5 ring system. The resulting cycloadducts bear a structural resemblance to other NF-κB inhibitors such as cumambrin A and indeed were shown to inhibit NF-κB signaling and cancer cell growth.
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Affiliation(s)
- Bo Wen
- Department of Chemistry, Univ. of Pittsburgh, Pittsburgh, PA 15260
| | - Joseph K. Hexum
- Department of Medicinal Chemistry, Univ. of Minnesota, Minneapolis, MN 55414
| | - John C. Widen
- Department of Medicinal Chemistry, Univ. of Minnesota, Minneapolis, MN 55414
| | - Daniel A. Harki
- Department of Medicinal Chemistry, Univ. of Minnesota, Minneapolis, MN 55414
| | - Kay M. Brummond
- Department of Chemistry, Univ. of Pittsburgh, Pittsburgh, PA 15260
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Zhou Z, Wang M, Zhao J, Wang L, Gao Y, Zhang H, Liu R, Song L. The increased transcriptional response and translocation of a Rel/NF-κB homologue in scallop Chlamys farreri during the immune stimulation. Fish Shellfish Immunol 2013; 34:1209-1215. [PMID: 23403154 DOI: 10.1016/j.fsi.2013.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 01/28/2013] [Accepted: 01/29/2013] [Indexed: 06/01/2023]
Abstract
The Rel/NF-κB transcription factors can function as key regulators to modulate the expression of immune-related genes in response to immune challenge or environmental stress. In the present study, a gene coding Rel/NF-κB homologue was identified from scallop Chlamys farreri (designated CfRel). Its deduced protein comprised 359 amino acids, and contained a conserved N-terminal Rel homology domain (RHD) and an IPT domain. There was an NF-κB/Rel/dorsal domain signature sequence in the RHD domain. The mRNA transcripts of CfRel could be detected in all the tested tissues including adductor muscle, mantle, gill, gonad, haemocytes, kidney and hepatopancreas, with the highest expression level in hepatopancreas. After LPS stimulation, there were two peaks of CfRel mRNA expression level in haemocytes at 6 h (25.25-fold, P < 0.05) and 24 h (59.66-fold, P < 0.05) respectively, while the mRNA expression of CfRel was only up-regulated at 3 h after PGN stimulation (2.35-fold, P < 0.05). By Western blotting technique, CfRel protein was observed in the cytoplasm and nucleus of scallop haemocytes, and its concentration in the haemocyte nucleus increased significantly at 3 h and 12 h after LPS stimulation. The noticeable NF-κB transcription activity of CfRel protein was determined by NF-κB luciferase reporter assays (122.43%, P < 0.05), and it decreased significantly (17.61%, P < 0.05) after the coexpression of scallop IκB protein. These results collectively suggested that CfRel mRNA transcripts and protein were induced by immune stimulation, and CfRel protein could extricate itself from IκB protein and transfer into the haemocyte nucleus to modulate the immune response in scallop.
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Affiliation(s)
- Zhi Zhou
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
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44
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Golden MS, Cote SM, Sayeg M, Zerbe BS, Villar EA, Beglov D, Sazinsky SL, Georgiadis RM, Vajda S, Kozakov D, Whitty A. Comprehensive experimental and computational analysis of binding energy hot spots at the NF-κB essential modulator/IKKβ protein-protein interface. J Am Chem Soc 2013; 135:6242-56. [PMID: 23506214 PMCID: PMC3680600 DOI: 10.1021/ja400914z] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report a comprehensive analysis of binding energy hot spots at the protein-protein interaction (PPI) interface between nuclear factor kappa B (NF-κB) essential modulator (NEMO) and IκB kinase subunit β (IKKβ), an interaction that is critical for NF-κB pathway signaling, using experimental alanine scanning mutagenesis and also the FTMap method for computational fragment screening. The experimental results confirm that the previously identified NEMO binding domain (NBD) region of IKKβ contains the highest concentration of hot-spot residues, the strongest of which are W739, W741, and L742 (ΔΔG = 4.3, 3.5, and 3.2 kcal/mol, respectively). The region occupied by these residues defines a potentially druggable binding site on NEMO that extends for ~16 Å to additionally include the regions that bind IKKβ L737 and F734. NBD residues D738 and S740 are also important for binding but do not make direct contact with NEMO, instead likely acting to stabilize the active conformation of surrounding residues. We additionally found two previously unknown hot-spot regions centered on IKKβ residues L708/V709 and L719/I723. The computational approach successfully identified all three hot-spot regions on IKKβ. Moreover, the method was able to accurately quantify the energetic importance of all hot-spot residues involving direct contact with NEMO. Our results provide new information to guide the discovery of small-molecule inhibitors that target the NEMO/IKKβ interaction. They additionally clarify the structural and energetic complementarity between "pocket-forming" and "pocket-occupying" hot-spot residues, and further validate computational fragment mapping as a method for identifying hot spots at PPI interfaces.
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Affiliation(s)
- Mary S. Golden
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Shaun M. Cote
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Marianna Sayeg
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Brandon S. Zerbe
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Elizabeth A. Villar
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Dmitri Beglov
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Stephen L. Sazinsky
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Rosina M. Georgiadis
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Sandor Vajda
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Dima Kozakov
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Adrian Whitty
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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Wang T, Sun Y, Jin L, Thacker P, Li S, Xu Y. Aj-rel and Aj-p105, two evolutionary conserved NF-κB homologues in sea cucumber (Apostichopus japonicus) and their involvement in LPS induced immunity. Fish Shellfish Immunol 2013; 34:17-22. [PMID: 23022054 DOI: 10.1016/j.fsi.2012.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 08/30/2012] [Accepted: 09/04/2012] [Indexed: 06/01/2023]
Abstract
The nuclear factor κB (NF-κB) has been evolutionary conserved from insects to mammals and plays a major regulatory role in the initiation of physiological responses. In this study, we identified and characterized a primitive and functional NF-κB pathway active in the immune defence of the sea cucumber (Apostichopus japonicus). The ancient NF-κB homologues, Aj-rel and Aj-p105, share numerous signature motifs with their vertebrate orthologues, notably the Rel Homology Domain, Rel Protein Signature DNA Binding Motif, Nuclear Localization Signal and the Ankyrin Repeats for Aj-p105. Phylogenetic analyses indicate that these homologues belong to class I and II of NF-κB respectively. We examined the dimerization of Aj-rel and Aj-p105 and our results demonstrated that Aj-rel forms heterdimers with Aj-p105 and the degradation product of Aj-p105, namely Aj-p50. We further observed that LPS stimulation led to the degradation of Aj-p105 and the nuclear translocation of Aj-rel and Aj-p50. Taken together, our data indicate that the NF-κB signaling cascade is active in sea cucumber and plays a crucial role in regulating their immune defence. Our results increase the available information on sea cucumber immunity and provide new information for use in the study of the comparative and evolutionary aspects of immunity.
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Affiliation(s)
- Tingting Wang
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian 116024, People's Republic of China
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Huang XD, Liu WG, Guan YY, Shi Y, Wang Q, Zhao M, Wu SZ, He MX. Molecular cloning and characterization of class I NF-κB transcription factor from pearl oyster (Pinctada fucata). Fish Shellfish Immunol 2012; 33:659-666. [PMID: 22796487 DOI: 10.1016/j.fsi.2012.06.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/20/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
NF-κB transcription factors play central roles in many important physiological and pathological processes including innate immune responses. Here we report the cloning of an NF-κB transcription factor, PfRelish from pearl oyster Pinctada fucata, one of the most important bivalve mollusks for seawater pearl production. PfRelish full-length cDNA is 3916 bp with an open reading frame of 3558 bp encoding a putative protein of 1186 amino acids. The deduced PfRelish contains a N-terminal RHD, a nucleus localization signal, an IκB-like domain with six ankyrin repeats and a death domain at the C-terminus, which is similar to class I NF-κB transcription factors. Comparison and phylogenetic analysis revealed that class I NF-κBs in mollusks including PfRelish might have most distant relationship to the arthropod Relish. Further expression analysis showed that PfRelish was apparently upregulated after Vibrio alginolyticus injection, which suggested that PfRelish was involved in the immune response to V. alginolyticus.
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Affiliation(s)
- Xian-De Huang
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
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Jayaprakasha GK, Murthy KNC, Demarais R, Patil BS. Inhibition of prostate cancer (LNCaP) cell proliferation by volatile components from Nagami kumquats. Planta Med 2012; 78:974-980. [PMID: 22673830 DOI: 10.1055/s-0031-1298619] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Fresh Nagami kumquats (Fortunella margarita) were subjected to hydrodistillation using a Clevenger-type apparatus to obtain volatile oil. The chemical composition of the volatile oil was analyzed by GC-MS using Rtx-5 Sil MS and DB Wax columns. A total of 25 volatile compounds were identified by mass spectra, retention index, and comparison with known standards. The major identified compounds are d-limonene (41.64 %), β-myrecene (16.54 %), linalyl propionate (9.55 %), and germacrene-D (5.93 %) from the Rtx-5 Sil MS column; d-limonene and β-myrecene were also separated as major compounds on the DB wax column. The oil is rich in hydrocarbons (77.41 %) consisting of 60.05 % monoterpenes and 17.36 % sesquiterpenes. Interestingly, oxygenated hydrocarbons (17.6 %) were also found in kumquat volatile oil. Certain volatile compounds were also confirmed by positive chemical ionization and NMR spectra. Further, the volatile oil demonstrated good DPPH radical scavenging activity and antioxidant capacity. Kumquat volatile oil at 200 ppm concentration exhibited 55 %, 61 %, and 63.4 % inhibition of human prostate cancer (LNCaP) cell proliferation at 24, 48, and 72 h, respectively, by cell count assays. Significant increases in expression of bax/bcl2 and p53 proteins confirmed that volatile oil induces apoptosis. In addition, inhibition of inflammatory markers such as NF-κB and Cox-2 was observed. The cleavage of caspase-8 in the LNCaP cells treated with volatile oil demonstrated that apoptosis occurred through an extrinsic pathway. This is the first report of the identification and possible mechanisms of in vitro antiproliferative effects of kumquat volatile components on human prostate cancer (LNCaP) cells.
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Abstract
It is only recently that the full importance of nuclear factor-κB (NF-κB) signalling to cancer development has been understood. Although much attention has focused on the upstream pathways leading to NF-κB activation, it is now becoming clear that the inhibitor of NF-κB kinases (IKKs), which regulate NF-κB activation, have many independent functions in tissue homeostasis and normal immune function that could compromise the clinical utility of IKK inhibitors. Therefore, if the NF-κB pathway is to be properly exploited as a target for both anticancer and anti-inflammatory drugs, it is appropriate to reconsider the complex roles of the individual NF-κB subunits.
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Affiliation(s)
- Neil D Perkins
- Institute for Cell and Molecular Biosciences, Newcastle University, Medical School, Catherine Cookson Building, Framlington Place, Newcastle Upon Tyne NE2 4HH, UK.
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Gao N, Zhang Q, Mu Q, Bai Y, Li L, Zhou H, Butch ER, Powell TB, Snyder SE, Jiang G, Yan B. Steering carbon nanotubes to scavenger receptor recognition by nanotube surface chemistry modification partially alleviates NFκB activation and reduces its immunotoxicity. ACS Nano 2011; 5:4581-91. [PMID: 21595480 PMCID: PMC3138538 DOI: 10.1021/nn200283g] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Carbon nanotubes (CNTs) cause perturbations in immune systems and limit the application of CNTs in biomedicine. Here we demonstrate that a surface chemistry modification on multiwalled CNTs (MWCNTs) reduces their immune perturbations in mice and in macrophages. The modified MWCNTs change their preferred binding pattern from mannose receptor to scavenger receptor. This switch significantly alleviates NFκB activation and reduces immunotoxicity of MWCNTs.
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Affiliation(s)
- Ningning Gao
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, China
| | - Qiu Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Qingxin Mu
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, 38105 U.S.A
| | - Yuhong Bai
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, China
| | - Liwen Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Hongyu Zhou
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, 38105 U.S.A
| | - Elizabeth R. Butch
- Department of Radiological Sciences, St. Jude Children’s Research Hospital, Memphis, Tennessee, 38105 U.S.A
| | - Tremaine B. Powell
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085,China
| | - Scott E. Snyder
- Department of Radiological Sciences, St. Jude Children’s Research Hospital, Memphis, Tennessee, 38105 U.S.A
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085,China
| | - Bing Yan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, 38105 U.S.A
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Zhao Y, Widen SG, Jamaluddin M, Tian B, Wood TG, Edeh CB, Brasier AR. Quantification of activated NF-kappaB/RelA complexes using ssDNA aptamer affinity-stable isotope dilution-selected reaction monitoring-mass spectrometry. Mol Cell Proteomics 2011; 10:M111.008771. [PMID: 21502374 PMCID: PMC3108844 DOI: 10.1074/mcp.m111.008771] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 04/08/2011] [Indexed: 12/12/2022] Open
Abstract
Nuclear Factor-κB (NF-κB) is a family of inducible transcription factors regulated by stimulus-induced protein interactions. In the cytoplasm, the NF-κB member RelA transactivator is inactivated by binding inhibitory IκBs, whereas in its activated state, the serine-phosphorylated protein binds the p300 histone acetyltransferase. Here we describe the isolation of a ssDNA aptamer (termed P028F4) that binds to the activated (IκBα-dissociated) form of RelA with a K(D) of 6.4 × 10(-10), and its application in an enrichment-mass spectrometric quantification assay. ssDNA P028F4 competes with cognate duplex high affinity NF-κB binding sites for RelA binding in vitro, binds activated RelA in eukaryotic nuclei and reduces TNFα-stimulated endogenous NF-κB dependent gene expression. Incorporation of P028F4 as an affinity isolation step enriches for serine 536 phosphorylated and p300 coactivator complexed RelA, simultaneously depleting IκBα·RelA complexes. A stable isotope dilution (SID)-selected reaction monitoring (SRM)- mass spectrometry (MS) assay for RelA was developed that produced a linear response over 1,000 fold dilution range of input protein and had a 200 amol lower limit of quantification. This multiplex SID-SRM-MS RelA assay was used to quantify activated endogenous RelA in cytokine-stimulated eukaryotic cells isolated by single-step P028F4 enrichment. The aptamer-SID-SRM-MS assay quantified the fraction of activated RelA in subcellular extracts, detecting the presence of a cytoplasmic RelA reservoir unresponsive to TNFα stimulation. We conclude that aptamer-SID-SRM-MS is a versatile tool for quantification of activated NF-κB/RelA and its associated complexes in response to pathway activation.
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Affiliation(s)
- Yingxin Zhao
- From the ‡Sealy Center for Molecular Medicine
- §Department of Internal Medicine
| | | | | | | | - Thomas G. Wood
- From the ‡Sealy Center for Molecular Medicine
- the ¶¶Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555
| | | | - Allan R. Brasier
- From the ‡Sealy Center for Molecular Medicine
- §Department of Internal Medicine
- ¶Institute for Translational Sciences, and
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