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Ahanin EF, Sager RA, Backe SJ, Dunn DM, Dushukyan N, Blanden AR, Mate NA, Suzuki T, Anderson T, Roy M, Oberoi J, Prodromou C, Nsouli I, Daneshvar M, Bratslavsky G, Woodford MR, Bourboulia D, Chisholm JD, Mollapour M. Catalytic inhibitor of Protein Phosphatase 5 activates the extrinsic apoptotic pathway by disrupting complex II in kidney cancer. Cell Chem Biol 2023; 30:1223-1234.e12. [PMID: 37527661 PMCID: PMC10592443 DOI: 10.1016/j.chembiol.2023.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/11/2023] [Accepted: 06/30/2023] [Indexed: 08/03/2023]
Abstract
Serine/threonine protein phosphatase-5 (PP5) is involved in tumor progression and survival, making it an attractive therapeutic target. Specific inhibition of protein phosphatases has remained challenging because of their conserved catalytic sites. PP5 contains its regulatory domains within a single polypeptide chain, making it a more desirable target. Here we used an in silico approach to screen and develop a selective inhibitor of PP5. Compound P053 is a competitive inhibitor of PP5 that binds to its catalytic domain and causes apoptosis in renal cancer. We further demonstrated that PP5 interacts with FADD, RIPK1, and caspase 8, components of the extrinsic apoptotic pathway complex II. Specifically, PP5 dephosphorylates and inactivates the death effector protein FADD, preserving complex II integrity and regulating extrinsic apoptosis. Our data suggests that PP5 promotes renal cancer survival by suppressing the extrinsic apoptotic pathway. Pharmacologic inhibition of PP5 activates this pathway, presenting a viable therapeutic strategy for renal cancer.
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Affiliation(s)
- Elham F Ahanin
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Rebecca A Sager
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Sarah J Backe
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Diana M Dunn
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Natela Dushukyan
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Adam R Blanden
- Department of Neurology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Nilamber A Mate
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Tamie Suzuki
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA
| | - Tyler Anderson
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; College of Health Professions, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Merin Roy
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Jasmeen Oberoi
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton BN1 9RQ, UK
| | - Chrisostomos Prodromou
- School of Life Sciences, Biochemistry and Biomedicine, University of Sussex, Falmer, Brighton BN1 9QG, UK
| | - Imad Nsouli
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Michael Daneshvar
- Department of Urology, University of California, California, Irvine, CA 92868, USA
| | - Gennady Bratslavsky
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Mark R Woodford
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Dimitra Bourboulia
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA.
| | - John D Chisholm
- Department of Chemistry, Syracuse University, Syracuse, NY 13210, USA.
| | - Mehdi Mollapour
- Department of Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA; Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA.
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Sun H, Wang P, Wei C, Li Y, Zhang Y. The Detoxification Enzymatic Responses of Plutella xylostella (Lepidoptera: Plutellidae) to Cantharidin. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1551-1556. [PMID: 36073195 DOI: 10.1093/jee/toac139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Plutella xylostella (L.) (Lepidoptera: Plutellidae) is one of the most destructive pests of Brassicaceae vegetables. Cantharidin is an insect-derived defensive toxin, which has been reported to have toxicity to a variety of pests and especially lepidopteran pests. Although the toxicity of cantharidin on P. xylostella has been demonstrated, there is little information available on the specific detoxification response of P. xylostella against cantharidin. This study investigates the enzymatic response (including serine/threonine phosphatases [PSPs], carboxylesterases [CarEs], glutathione-S-transferases [GSTs], and cytochrome P450 monooxygenases [P450]) in P. xylostella to the sublethal and low lethal concentrations of cantharidin (LC10 and LC25). Results showed that the inhibitory activity of PSPs was increased and then decreased in vivo, while PSPs activity could be almost completely inhibited in vitro. Interestingly, the activities of detoxification enzymes (GST, CarE, and P450) in P. xylostella displayed a trend of decreasing and then increasing after exposure to the two concentrations of cantharidin. Notably, the increase in P450 enzyme activity was the most significant. The increasing trend of detoxification enzyme activity was congruent with the recovery trend of PSPs activity. This study contributes to our understanding of the detoxification mechanism of cantharidin in P. xylostella and helps in the further development of biogenic agents.
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Affiliation(s)
- Hong Sun
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Pei Wang
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Chunqi Wei
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yifan Li
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
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Liu J, Zhou T, Li C, Li R, Ye X, Tian Z. Reverse chemical ecology guides the screening for Grapholita molesta pheromone synergists. PEST MANAGEMENT SCIENCE 2022; 78:643-652. [PMID: 34658157 DOI: 10.1002/ps.6674] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/28/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Pheromone-based management is a leading nonpesticidal strategy among integrated pest management options. Improving the potency of pheromone products by adding synergists would be a practical way to popularize pheromone-based management as well as to reduce pesticide use. RESULTS Using reverse chemical ecology, synergists for Grapholita molesta sex pheromone were screened. Combined molecular docking and in vitro binding assay led to the determination of four potentially active odorants showing high affinity to G. molesta pheromone binding protein 2 (GmolPBP2). Thereafter, the high affinity between Codlemone and GmolPBP2 was further verified by exploration of GmolPBP2-Codlemone interactions. As the only sex pheromone synergist validated by both laboratory behavioral tests and field trapping, Codlemone was used to optimize commercial sex attractants currently used in G. molesta control. The recommended formulation [(Z)-8-dodecenyl acetate:(E)-8-dodecenyl acetate:Codlemone = 95:4:10] was found to trap about five to six times more G. molesta adults than the commercial sex attractant [(Z)-8-dodecenyl acetate:(E)-8-dodecenyl acetate: (Z)-8-dodecenol = 95:4:1]. CONCLUSION Codlemone is an excellent pheromone synergist that can be potentially sensed by GmolPBP2, which can remarkably improve the potency of G. molesta sex attractants. It is believed that the introduction of reverse chemical ecology would increase the chance of discovering pheromone synergists, promoting the development of more efficacious pheromone products that can be used in controlling G. molesta and beyond. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Tong Zhou
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Chaoxia Li
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Ruichi Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xuan Ye
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Zhen Tian
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, China
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
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Méndez-Álvarez D, Herrera-Mayorga V, Juárez-Saldivar A, Paz-González AD, Ortiz-Pérez E, Bandyopadhyay D, Pérez-Sánchez H, Rivera G. Ligand-based virtual screening, molecular docking, and molecular dynamics of eugenol analogs as potential acetylcholinesterase inhibitors with biological activity against Spodoptera frugiperda. Mol Divers 2021; 26:2025-2037. [PMID: 34529209 DOI: 10.1007/s11030-021-10312-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/02/2021] [Indexed: 11/26/2022]
Abstract
The development of new, more selective, environmental-friendly insecticide alternatives is in high demand for the control of Spodoptera frugiperda (S. frugiperda). The major objective of this work was to search for new potential S. frugiperda acetylcholinesterase (AChE) inhibitors. A ligand-based virtual screening was initially carried out considering six scaffolds derived from eugenol and the ZINC15, PubChem, and MolPort databases. Subsequently, molecular docking analysis of the selected compounds on the active site and a second region (determined by blind molecular docking) of the AChE of S. frugiperda was performed. Molecular dynamics and Molecular Mechanics Poisson-Boltzmann Surface Area analyses were also applied to improve the docking results. Finally, three new eugenol analogs were evaluated in vitro against S. frugiperda larvae. The virtual screening identified 1609 compounds from the chemical libraries. Control compounds were selected from the interaction fingerprint by molecular docking. Only three new eugenol analogs (1, 3, and 4) were stable at 50 ns by molecular dynamics. Compounds 1 and 4 had the best biological activity by diet (LC50 = 0.042 mg/mL) and by topical route (LC50 = 0.027 mg/mL), respectively. At least three new eugenol derivatives possessed good-to-excellent insecticidal activity against S. frugiperda.
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Affiliation(s)
- Domingo Méndez-Álvarez
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, 88710, Reynosa, Tamaulipas, México
| | - Verónica Herrera-Mayorga
- Departamento de Ingeniería Bioquímica, Unidad Académica Multidisciplinaria Mante, Universidad Autónoma de Tamaulipas, 89840, Mante, Tamaulipas, México
| | - Alfredo Juárez-Saldivar
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, 88710, Reynosa, Tamaulipas, México
| | - Alma D Paz-González
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, 88710, Reynosa, Tamaulipas, México
| | - Eyra Ortiz-Pérez
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, 88710, Reynosa, Tamaulipas, México
| | - Debasish Bandyopadhyay
- Department of Chemistry and SEEMS, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Horacio Pérez-Sánchez
- Structural Bioinformatics and High-Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica San Antonio De Murcia (UCAM), 30107, Murcia, Spain
| | - Gildardo Rivera
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, 88710, Reynosa, Tamaulipas, México.
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Neumann J, Boknik P, Kirchhefer U, Gergs U. The role of PP5 and PP2C in cardiac health and disease. Cell Signal 2021; 85:110035. [PMID: 33964402 DOI: 10.1016/j.cellsig.2021.110035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Accepted: 05/03/2021] [Indexed: 02/08/2023]
Abstract
Protein phosphatases are important, for example, as functional antagonists of β-adrenergic stimulation of the mammalian heart. While β-adrenergic stimulations increase the phosphorylation state of regulatory proteins and therefore force of contraction in the heart, these phosphorylations are reversed and thus force is reduced by the activity of protein phosphatases. In this context the role of PP5 and PP2C is starting to unravel. They do not belong to the same family of phosphatases with regard to sequence homology, many similarities with regard to location, activation by lipids and putative substrates have been worked out over the years. We also suggest which pathways for regulation of PP5 and/or PP2C described in other tissues and not yet in the heart might be useful to look for in cardiac tissue. Both phosphatases might play a role in signal transduction of sarcolemmal receptors in the heart. Expression of PP5 and PP2C can be increased by extracellular stimuli in the heart. Because PP5 is overexpressed in failing animal and human hearts, and because overexpression of PP5 or PP2C leads to cardiac hypertrophy and KO of PP5 leads to cardiac hypotrophy, one might argue for a role of PP5 and PP2C in heart failure. Because PP5 and PP2C can reduce, at least in vitro, the phosphorylation state of proteins thought to be relevant for cardiac arrhythmias, a role of these phosphatases for cardiac arrhythmias is also probable. Thus, PP5 and PP2C might be druggable targets to treat important cardiac diseases like heart failure, cardiac hypertrophy and cardiac arrhythmias.
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Affiliation(s)
- Joachim Neumann
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
| | - Peter Boknik
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Ulrich Gergs
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
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Li Y, Sun H, Yasoob H, Tian Z, Li Y, Li R, Zheng S, Liu J, Zhang Y. Biogenetic cantharidin is a promising leading compound to manage insecticide resistance of Mythimna separata (Lepidoptera: Noctuidae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 172:104769. [PMID: 33518040 DOI: 10.1016/j.pestbp.2020.104769] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Cantharidin (CTD) is a natural toxin with effective toxicity to lepidopteran pests. Nevertheless, little information is available on whether pests develop resistance to CTD. After being exposed to CTD (50 mg/L to 90 mg/L) or 10 generations, the resistance ratio of laboratory selected cantharidin-resistant Mythimna separata (Cantharidin-SEL) strain was only elevated 1.95-fold. Meanwhile, the developmental time for M. separata was prolonged (delayed1.65 in males and 1.84 days in females). The reported CTD target, the serine/threonine phosphatases (PSPs), have not been shown significant activity variation during the whole process of CTD-treatment. The activity of detoxification enzymes (cytochrome monooxygenase P450, glutathione-S-transferase (GST) and carboxylesterase) were affected by CTD selection, but this change was not mathematically significant. More importantly, no obvious cross-resistance with other commonly used insecticides was observed in the M. separata population treated with CTD for 10 generations (resistance ratios were all lower 2.5). Overall, M. separata is unlikely to produce target-site insensitivity resistance, metabolic resistance to CTD. Meanwhile, cantharidin-SEL is not prone to develop cross-resistance with other insecticides. These results indicate that CTD is a promising biogenetic lead compound which can be applied in the resistance management on M. separata.
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Affiliation(s)
- Yifan Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hong Sun
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hassan Yasoob
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China; Department of Entomology, UCA&ES, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Zhen Tian
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, No.48, Yangzhou, Jiangsu Province 225009, China
| | - Yue Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ruichi Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shengli Zheng
- College of Chemistry & Pharmacy, Northwest A&F University, No.3 Taicheng Road, Yangling, Shaanxi 712100, China
| | - Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Liu J, Li R, Zhou T, Cheng S, Li C, Ye X, Li Y, Tian Z. Structural evidence for pheromone discrimination by the pheromone binding protein 3 from Plutella xylostella. Int J Biol Macromol 2020; 169:396-406. [PMID: 33352161 DOI: 10.1016/j.ijbiomac.2020.12.119] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/20/2020] [Accepted: 12/15/2020] [Indexed: 11/26/2022]
Abstract
Insect pheromone binding proteins (PBPs) are believed to have a high degree of pheromone selectivity, acting as the first filter to discriminate specific pheromones from other volatile compounds. Herein, we provide evidence using homology-based model for the pheromone discrimination of Plutella xylostella pheromone binding protein 3 (PxPBP3). Combining molecular dynamics simulations and in vitro binding assays, two dominant sites are determined to be essential for the PxPBP3 to discriminate (Z)-11-hexadecenyl acetate (Hexadecenyl) from (Z)-11-hexadecenal (Hexadecenal). As the first key site for pheromone discrimination, Arg111 is indispensable to the PxPBP3-Hexadecenyl interaction. However, its importance in the binding of Hexadecenal to PxPBP3 is greatly reduced. A second site where pheromone discrimination occurs is a small loop (residues 34-38) in PxPBP3. It is shown that the hydrophobic strength provided by three hydrophobic residues (Phe34, Tyr37, and Trp38) in the small loop is significantly biased in the two complexes formed by PxPBP3 and the two pheromones. The discrimination capacity of PxPBP3 indicates that the P. xylostella pheromones may not share the same peri-receptor pathway, although they both show high affinity to PxPBP3.
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Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ruichi Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Tong Zhou
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China
| | - Shichang Cheng
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China
| | - Chaoxia Li
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China
| | - Xuan Ye
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yue Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhen Tian
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China.
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8
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The Inhibition of Serine/Threonine Protein Phosphatase Type 5 Mediates Cantharidin Toxicity to Control Periplaneta americana (L.). INSECTS 2020; 11:insects11100682. [PMID: 33050059 PMCID: PMC7600710 DOI: 10.3390/insects11100682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 12/20/2022]
Abstract
The American cockroach, Periplaneta americana (L.), is a notorious urban pest. It has developed insecticidal resistance to commonly used insecticides. Cantharidin (CTD) is a defensive toxin derived from blister beetles. It has been verified to have insecticidal toxicity in a range of pests. In this study, we determined the ingestion toxicity of CTD and norcantharidin (NCTD) to P. americana to test whether they had the potential to be effective against P. americana. Bioassays revealed that CTD produces toxicity against P. americana. The median lethal concentration (LC50) value of CTD was 50.92 μg/mL, while NCTD displayed nearly no toxicity against P. americana. The inhibition assays of serine/threonine protein phosphatases (PSPs) in P. americana indicated that CTD and NCTD could inhibit PSPs. The value of the half maximal inhibitory concentration (IC50) of CTD was 7.21 ± 0.94 μM, whereas that of NCTD was higher, at 31.65 ± 3.87 μM. Furthermore, the inhibition effect of CTD on the serine/threonine protein phosphatase type 5 of P. americana (PaPP5) was superior to that of NCTD. Specifically, the IC50 of CTD reached 0.39 ± 0.04 μM, while the IC50 of NCTD was 1.87 ± 0.23 μM. This study paves the way for insect-derived agents (CTD) to be applied toward controlling P. americana and contributes to the development of novel insecticides based on PP5 as a target.
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de Oliveira MD, Araújo JDO, Galúcio JMP, Santana K, Lima AH. Targeting shikimate pathway: In silico analysis of phosphoenolpyruvate derivatives as inhibitors of EPSP synthase and DAHP synthase. J Mol Graph Model 2020; 101:107735. [PMID: 32947107 DOI: 10.1016/j.jmgm.2020.107735] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/13/2020] [Accepted: 08/31/2020] [Indexed: 02/03/2023]
Abstract
The shikimate pathway consists of seven enzymatic steps involved in the conversion of erythrose-4-phosphate and phosphoenolpyruvate to chorismate and also responsible to the production of aromatic amino acids, such as phenylalanine, tyrosine, and tryptophan which are essential to the bacterial metabolism. The 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase (DAHPS) and 5-enolpyruvylshikimate 3-phosphate synthase (EPSPS) catalyze important steps in the shikimate pathway using as substrate the phosphoenolpyruvate (PEP). Due to the importance of PEP in shikimate pathway, its structure has been investigated to develop new bioinspired competitive inhibitors against DAHPS and EPSPS. In the present study, we perform a literature survey of 28 PEP derivatives, then we analyzed the selectivity and affinity of these compounds against the EPSPS and DAHPS structures using consensual molecular docking, pharmacophore prediction, molecular dynamics (MD) simulations, and binding free energy calculations. Here, we propose consistent binding modes of the selected ligands and indicate that their structures show interesting pharmacophoric properties related to multi-targets inhibitors for both enzymes. Our computational results are supported by previous experimental findings related to the interactions of PEP derivatives with DAHPS and EPSPS structures.
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Affiliation(s)
- Maycon D de Oliveira
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, 66075-110, Belém, Pará, Brazil
| | - Jéssica de O Araújo
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, 66075-110, Belém, Pará, Brazil
| | - João M P Galúcio
- Instituto de Biodiversidade. Universidade Federal do Oeste do Pará, 68035-110, Santarém, Pará, Brazil
| | - Kauê Santana
- Instituto de Biodiversidade. Universidade Federal do Oeste do Pará, 68035-110, Santarém, Pará, Brazil
| | - Anderson H Lima
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, 66075-110, Belém, Pará, Brazil.
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10
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Dynamic Protein Allosteric Regulation and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1163:25-43. [DOI: 10.1007/978-981-13-8719-7_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Tian Z, Li Y, Xing Y, Li R, Liu J. Structural Insights into Two Representative Conformations of the Complex Formed by Grapholita molesta (Busck) Pheromone Binding Protein 2 and Z-8-Dodecenyl Acetate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:4425-4434. [PMID: 30945860 DOI: 10.1021/acs.jafc.9b00052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Grapholita molesta is a notorious fruit borer globally, causing severe damage to fruit production. To control the pest, one commonly used mean is pheromone-mediated management. As an important sex pheromone, Z-8-dodecenyl acetate (Z8-12: Ac), is often coformulated with other active ingredients to regulate the behavior of G. molesta. To uncover its interactions with G. molesta pheromone binding protein 2 (GmolPBP2) is used to help develop insect attractants. During 200 ns molecular dynamics simulations, two representative conformations of the GmolPBP2-Z8-12: Ac complex are selected. Conformation II at the time of 14-106 ns is dominantly maintained by the hydrophobic interactions and hydrogen bond. In Conformation I, which lasts from 106 to 200 ns, the hydrophobic interactions are enhanced while the hydrogen bond is quite weakened, due to the formation of a more sophisticated hydrophobic binding pocket and the enlargement of hydrogen bond distance. Taking the two conformations as a whole, the affinity between GmolPBP2 and Z8-12: Ac is crucially determined by three hot-spots including Phe11, Trp36, and Ile51. These results would provide a basis for the discovery, optimization, and design of leading compounds potentially active to attract G. molesta.
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Affiliation(s)
- Zhen Tian
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
- College of Horticulture and Plant Protection , Yangzhou University , Wenhui East Road, No. 48 , Yangzhou , Jiangsu Province 225009 , China
| | - Yue Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
| | - Yijia Xing
- College of Horticulture and Plant Protection , Yangzhou University , Wenhui East Road, No. 48 , Yangzhou , Jiangsu Province 225009 , China
| | - Ruichi Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
| | - Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
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12
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Review: Precision medicine and driver mutations: Computational methods, functional assays and conformational principles for interpreting cancer drivers. PLoS Comput Biol 2019; 15:e1006658. [PMID: 30921324 PMCID: PMC6438456 DOI: 10.1371/journal.pcbi.1006658] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
At the root of the so-called precision medicine or precision oncology, which is our focus here, is the hypothesis that cancer treatment would be considerably better if therapies were guided by a tumor’s genomic alterations. This hypothesis has sparked major initiatives focusing on whole-genome and/or exome sequencing, creation of large databases, and developing tools for their statistical analyses—all aspiring to identify actionable alterations, and thus molecular targets, in a patient. At the center of the massive amount of collected sequence data is their interpretations that largely rest on statistical analysis and phenotypic observations. Statistics is vital, because it guides identification of cancer-driving alterations. However, statistics of mutations do not identify a change in protein conformation; therefore, it may not define sufficiently accurate actionable mutations, neglecting those that are rare. Among the many thematic overviews of precision oncology, this review innovates by further comprehensively including precision pharmacology, and within this framework, articulating its protein structural landscape and consequences to cellular signaling pathways. It provides the underlying physicochemical basis, thereby also opening the door to a broader community.
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13
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Hu MH, Huang TT, Chao TI, Chen LJ, Chen YL, Tsai MH, Liu CY, Kao JH, Chen KF. Serine/threonine protein phosphatase 5 is a potential therapeutic target in cholangiocarcinoma. Liver Int 2018; 38:2248-2259. [PMID: 29797403 DOI: 10.1111/liv.13887] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 05/20/2018] [Indexed: 02/13/2023]
Abstract
BACKGROUND & AIMS Few molecules are currently verified to be actionable drug targets in cholangiocarcinoma (CCA). Serine/threonine protein phosphatase 5 (PP5) dysregulation is related to several malignancies. However, the role of PP5 in CCA is poorly defined. METHODS Colony and tumorsphere formation assays were conducted to establish the role of PP5 in CCA tumorigenesis. Cantharidin (CTD) and norcantharidin (NCTD), both potent PP5 inhibitors, were used in in vitro and in vivo experiments to validate the potential therapeutic role of PP5. RESULTS Increased cell growth, colony formation and tumorsphere formation were observed in PP5-overexpressing CCA cells, whereas PP5 knockdown by shRNA decreased cell growth and colony formation. Tumours from HuCCT1 xenograft-bearing mice treated with PP5-shRNA showed decreased growth and increased AMP-activated protein kinase (AMPK) phosphorylation. Furthermore, CTD treatment decreased cell viability, reduced PP5 activity and enhanced AMPK phosphorylation in CCA cell lines. Overexpressing PP5 or enhancing PP5 activity suppressed AMPK phosphorylation and decreased CTD-induced cell death. Suppressing p-AMPK with siRNA or inhibitors also decreased CTD-induced cell death, suggesting a pivotal role for PP5-AMPK cascades in CCA. Immunoprecipitation revealed that PP5 interacted with AMPK. Importantly, treatment of HuCCT1 xenograft-bearing mice with NCTD, a CTD analogue with a lower systemic toxicity in vivo, suppressed PP5 activity, increased p-AMPK and reduced tumour volume. CONCLUSIONS Protein phosphatase 5 negatively regulates AMPK phosphorylation and contributes to CCA aggressiveness; thus, PP5 may be a potential therapeutic target in CCA.
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Affiliation(s)
- Ming-Hung Hu
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.,Division of Hematology and Oncology, Department of Medicine, Cardinal Tien Hospital, New Taipei City, Taiwan.,School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Tzu-Ting Huang
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei City, Taiwan
| | - Tzu-I Chao
- Transplant Medicine & Surgery Research Centre, Changhua Christian Hospital, Changhua, Taiwan
| | - Li-Ju Chen
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Lin Chen
- Department of Pathology, Cardinal Tien Hospital, New Taipei City, Taiwan
| | - Ming-Hsien Tsai
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Yu Liu
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei City, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Transfusion Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jia-Horng Kao
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kuen-Feng Chen
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan.,National Center of Excellence for Clinical Trial and Research, National Taiwan University Hospital, Taipei, Taiwan
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14
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Liu J, Liu L, Tian Z, Li Y, Shi C, Shi J, Wei S, Zhao Y, Zhang C, Bai B, Chen Z, Zhang H. In Silico Discovery of a Small Molecule Suppressing Lung Carcinoma A549 Cells Proliferation and Inducing Autophagy via mTOR Pathway Inhibition. Mol Pharm 2018; 15:5427-5436. [PMID: 30346178 DOI: 10.1021/acs.molpharmaceut.8b00996] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Li Liu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province 710072, China
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Zhen Tian
- College of Horticulture and Plant Protection, Yangzhou University, Wenhui East Road, NO. 48, Yangzhou, Jiangsu Province 225009, China
| | - Yifan Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Changhong Shi
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province 710072, China
| | - Sanhua Wei
- Department of Clinical Laboratory and Research Center, Tangdu Hospital, Air Force Medical University, No. 569 Xinsi Road, Xi’an, Shaanxi 710038, China
| | - Yong Zhao
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Caiqing Zhang
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Bing Bai
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
| | - Zhinan Chen
- National Translational Science Center for Molecular Medicine, Department of Cell Biology, School of Basic Medicine, Air Force Medical University, Xi’an, Shaanxi Province 710032, China
| | - Hai Zhang
- Laboratory Animal Center, Air Force Medical University, No. 169 Changle West Road, Xi’an, Shaanxi Province 710032, China
- National Translational Science Center for Molecular Medicine, Department of Cell Biology, School of Basic Medicine, Air Force Medical University, Xi’an, Shaanxi Province 710032, China
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15
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Liu J, Li Y, Tian Z, Sun H, Chen X, Zheng S, Zhang Y. Identification of Key Residues Associated with the Interaction between Plutella xylostella Sigma-Class Glutathione S-Transferase and the Inhibitor S-Hexyl Glutathione. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:10169-10178. [PMID: 30207467 DOI: 10.1021/acs.jafc.8b03967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Glutathione S-transferases (GSTs) are important detoxification enzymes involved in the development of metabolic resistance in Plutella xylostella. Uncovering the interactions between representative PxGSTs and the inhibitor S-hexyl glutathione (GTX), helps in the development of effective PxGST inhibitors for resistance management. As the PxGST most severely inhibited by GTX, PxGSTσ (sigma-class PxGST) adopts the canonical fold of insect GSTs. The formation of the PxGSTσ-GTX complex is mainly driven by H-bond and hydrophobic interactions derived from the side chains of favorable residues. Of the residues composing the active site of PxGSTσ, Lys43 and Arg99 are two hot spots, first reported in the binding of GSH derivatives to GSTs. Such differences indicate the metabolism discrimination of different insect GSTs. Unfavorable interactions between the PxGSTσ active site and GTX are depicted as well. The research guides the discovery and optimization of PxGSTσ inhibitors.
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Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
| | - Yifan Li
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
| | - Zhen Tian
- College of Horticulture and Plant Protection , Yangzhou University , Wenhui East Road, Number 48 , Yangzhou , Jiangsu 225009 , China
| | - Hong Sun
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
| | - Xi'en Chen
- Department of Entomology, College of Agriculture, Food and Environment , University of Kentucky , Lexington , Kentucky 40546 , United States
| | - Shengli Zheng
- College of Chemistry & Pharmacy , Northwest A&F University , Number 3 Taicheng Road , Yangling , Shaanxi 712100 , China
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection , Northwest A&F University , Yangling , Shaanxi 712100 , China
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16
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Sitthiyotha T, Pichyangkura R, Chunsrivirot S. Molecular dynamics provides insight into how N251A and N251Y mutations in the active site of Bacillus licheniformis RN-01 levansucrase disrupt production of long-chain levan. PLoS One 2018; 13:e0204915. [PMID: 30278092 PMCID: PMC6168164 DOI: 10.1371/journal.pone.0204915] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 09/17/2018] [Indexed: 12/11/2022] Open
Abstract
Produced by levansucrase, levan and levan oligosaccharides (GFn) have potential applications in food and pharmaceutical industries such as prebiotics, anti-tumor and anti-inflammatory agents. Previous study reported that Bacillus licheniformis RN-01 levansucrase could produce levan oligosaccharides and long-chain levan. However, its N251A and N251Y mutants could effectively produce short-chain oligosaccharides upto GF3, but they could not produce long-chain levan. We hypothesized that these mutations probably reduced GF3 binding affinity in levansucrase active site that contains fructosyl-Asp93 intermediate and caused GF3 to be in an unfavorable orientation for transfructosylation; therefore, levansucrase could not effectively extend GF3 by one fructosyl residue to produce GF4 and subsequently long-chain levan. However, these mutations probably did not significantly reduce binding affinity or drastically change orientation of GF2; therefore, levansucrase could still extend GF2 to produce GF3. Using this hypothesis, we employed molecular dynamics to investigate effects of these mutations on GF2/GF3 binding in levansucrase active site. Our results reasonably support this hypothesis as N251A and N251Y mutations did not significantly reduce GF2 binding affinity, as calculated by MM-GBSA technique and hydrogen bond occupations, or drastically change orientation of GF2 in levansucrase active site, as measured by distance between atoms necessary for transfructosylation. However, these mutations drastically decreased GF3 binding affinity and caused GF3 to be in an unfavorable orientation for transfructosylation. Furthermore, the free energy decomposition and hydrogen bond occupation results suggest the importance of Arg255 in GF2/GF3 binding in levansucrase active site. This study provides important and novel insight into the effects of N251A and N251Y mutations on GF2/GF3 binding in levansucrase active site and how they may disrupt production of long-chain levan. This knowledge could be beneficial in designing levansucrase to efficiently produce levan oligosaccharides with desired length.
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Affiliation(s)
- Thassanai Sitthiyotha
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- Structural and Computational Biology Research Group, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Rath Pichyangkura
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Surasak Chunsrivirot
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- Structural and Computational Biology Research Group, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- * E-mail:
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17
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Assis LC, de Castro AA, Prandi IG, Mancini DT, de Giacoppo JOS, Savedra RML, de Assis TM, Carregal JB, da Cunha EFF, Ramalho TC. Interactions of cantharidin-like inhibitors with human protein phosphatase-5 in a Mg 2+ system: molecular dynamics and quantum calculations. J Mol Model 2018; 24:303. [PMID: 30280322 DOI: 10.1007/s00894-018-3837-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 09/18/2018] [Indexed: 11/29/2022]
Abstract
The serine/threonine protein phosphatase type 5 (PP5) is a promising target for designing new antitumor drugs. This enzyme is a member of the PPP phosphatases gene family, which catalyzes a dephosphorylation reaction: a regulatory process in the signal transduction pathway that controls various biological processes. The aim of this work is to study and compare the inhibition of PP5 by ten cantharidin-like inhibitors in order to bring about contributions relevant to the better comprehension of their inhibitory activity. In this theoretical investigation, we used molecular dynamics techniques to understand the role of key interactions that occur in the protein active site; QM calculations were employed to study the interaction mode of these inhibitors in the enzyme. In addition, atoms in molecules (AIM) calculations were carried out to characterize the chemical bonds among the atoms involved and investigate the orbital interactions with their respective energy values. The obtained results suggest that the Arg275, Asn303, His304, His352, Arg400, His427, Glu428, Val429, Tyr451, and Phe446 residues favorably contribute to the interactions between inhibitors and PP5. However, the Asp271 and Asp244 amino acid residues do not favor such interactions for some inhibitors. Through the QM calculations, we can suggest that the reactional energy of the coordination mechanism of these inhibitors in the PP5 active site is quite important and is responsible for the inhibitory activity. The AIM technique employed in this work was essential to get a better comprehension of the transition states acquired from the mechanism simulation. This work offers insights of how cantharidin-like inhibitors interact with human PP5, potentially allowing the design of more specific and even less cytotoxic drugs for cancer treatments. Graphical Abstract Interactions of cantharidin-like inhibitors with human protein phosphatase-5 in a Mg2+ system.
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Affiliation(s)
- Letícia C Assis
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Alexandre A de Castro
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Ingrid G Prandi
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Daiana T Mancini
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Juliana O S de Giacoppo
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Ranylson M L Savedra
- Laboratory of Molecular Simulation of Material, Department of Physics, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Ouro Preto, MG, CEP 35400-000, Brazil
| | - Tamiris M de Assis
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Juliano B Carregal
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of São João del Rei (UFSJ), Rua Sebastião Gonçalves Coelho 400, Divinópolis, MG, 35501-296, Brazil
| | - Elaine F F da Cunha
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil
| | - Teodorico Castro Ramalho
- Laboratory of Computational Chemistry, Department of Chemistry, Federal University of Lavras (UFLA), 3027, Campus Universitario, Lavras, 37200000, Minas Gerais, Brazil. .,Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Kralove, Hradec Kralove, Czech Republic.
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18
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Abdullahi M, Olotu FA, Soliman ME. Solving the riddle: Unraveling the mechanisms of blocking the binding of leukotoxin by therapeutic antagonists in periodontal diseases. J Cell Biochem 2018; 119:9364-9379. [PMID: 30129224 DOI: 10.1002/jcb.27254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/21/2018] [Indexed: 12/12/2022]
Abstract
Aggregatibacter actinomycetemcomitans is a Gram-negative bacteria that has gained wide recognition for its causative role in the development of various immune diseases, which includes localized aggressive periodontitis. Its ability to evade host defense mechanisms is mediated by the secretion of leukotoxin (LtxA), which induces death of white blood cells (leukocytes) by specific binding to their surface-expressed leukocyte function-associated receptor (LFA-1) in its active state. Therapeutic compounds that interfere with this pathogenic process and abrogate A. actinomycetemcomitans virulence have been reported in literature. These include doxycycline, and more recently phytochemical compounds such as hamamelitanin, resveratrol, naringin, and quercetin. However, the question remains how do they work? Therefore, with the aid of computational tools, we explore the molecular mechanisms by which they possibly elicit their therapeutic functions. Molecular mechanics Poisson/Boltzmann surface area analyses revealed that these compounds bind favorably to active LFA-1 with high affinity and considerable stability, indicative of their ability to occupy the LtxA binding site (LBS) and prevent LtxA binding. The conformational transition of open LFA-1 to its closed state further describe the mechanistic activity of these compounds. In addition to notable reductions in structural mobility and flexibility, the burial of surface-exposed interactive side chains at the LBS was observed, an occurrence that could alter the complementary binding of LtxA. It is also important to mention that these occurrences were induced more prominently by the phytochemicals. We believe that these findings will enhance the scope of drug design and discovery for potent LtxA antagonists with improved activities and therapeutic efficacies in the treatment of virulent A. actinomycetemcomitans diseases.
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Affiliation(s)
- Maryam Abdullahi
- Molecular Bio-Computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Fisayo A Olotu
- Molecular Bio-Computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Mahmoud E Soliman
- Molecular Bio-Computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
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19
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Chen M, Liu J, Tian Z, Liu X, Zhang S. Synthesis, cytotoxic activity and binding model analysis of novel isoxazole-docetaxel analogues with C3′-N modification. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2151-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Feng IC, Hsieh MJ, Chen PN, Hsieh YH, Ho HY, Yang SF, Yeh CB. Cantharidic acid induces apoptosis through the p38 MAPK signaling pathway in human hepatocellular carcinoma. ENVIRONMENTAL TOXICOLOGY 2018; 33:261-268. [PMID: 29159945 DOI: 10.1002/tox.22513] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/03/2017] [Accepted: 11/07/2017] [Indexed: 06/07/2023]
Abstract
Cantharidin analogs exhibit anticancer activities, including apoptosis. However, the molecular mechanisms underlying the effects of cantharidic acid (CA), a cantharidin analog, on apoptosis in hepatocellular carcinoma (HCC) cells are unclear. Thus, in this study, we evaluated the anticancer activities of CA by investigating its ability to trigger apoptosis in SK-Hep-1 cells. Our data demonstrated that CA effectively inhibited the proliferation of SK-Hep-1 cells in a dose-dependent manner. Furthermore, CA effectively triggered cell cycle arrest and induced apoptosis, as determined by flow cytometric analysis. Western blotting revealed that CA significantly activated proapoptotic signaling including caspase-3, -8, and -9 in SK-Hep-1 cells. Moreover, treatment of SK-Hep-1 cells with CA induced the activation of ERK, p38, and c-Jun N-terminal kinase. Moreover, the inhibition of p38 by specific inhibitors abolished CA-induced cell apoptosis. In conclusion, our results indicated that CA induces apoptosis in SK-Hep-1 cells through a p38-mediated apoptotic pathway and could be a new HCC therapeutic agent.
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Affiliation(s)
- I-Che Feng
- Division of Gastroenterology and Hepatology, Chi Mei Medical Center, Yongkang District, Tainan, Taiwan
- Department of Internal Medicine, Chi Mei Medical Center, Yongkang District, Tainan, Taiwan
| | - Ming-Ju Hsieh
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Pei-Ni Chen
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yi-Hsien Hsieh
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Hsin-Yu Ho
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chao-Bin Yeh
- Department of Emergency Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Emergency Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
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Molecular Dynamics Simulations and Dynamic Network Analysis Reveal the Allosteric Unbinding of Monobody to H-Ras Triggered by R135K Mutation. Int J Mol Sci 2017; 18:ijms18112249. [PMID: 29072601 PMCID: PMC5713219 DOI: 10.3390/ijms18112249] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 10/13/2017] [Accepted: 10/24/2017] [Indexed: 12/12/2022] Open
Abstract
Ras proteins, as small GTPases, mediate cell proliferation, survival and differentiation. Ras mutations have been associated with a broad spectrum of human cancers and thus targeting Ras represents a potential way forward for cancer therapy. A recently reported monobody NS1 allosterically disrupts the Ras-mediated signaling pathway, but its efficacy is reduced by R135K mutation in H-Ras. However, the detailed mechanism is unresolved. Here, using molecular dynamics (MD) simulations and dynamic network analysis, we explored the molecular mechanism for the unbinding of NS1 to H-Ras and shed light on the underlying allosteric network in H-Ras. MD simulations revealed that the overall structures of the two complexes did not change significantly, but the H-Ras–NS1 interface underwent significant conformational alteration in the mutant Binding free energy analysis showed that NS1 binding was unfavored after R135K mutation, which resulted in the unfavorable binding of NS1. Furthermore, the critical residues on H-Ras responsible for the loss of binding of NS1 were identified. Importantly, the allosteric networks for these important residues were revealed, which yielded a novel insight into the allosteric regulatory mechanism of H-Ras.
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Hong TJ, Park K, Choi EW, Hahn JS. Ro 90-7501 inhibits PP5 through a novel, TPR-dependent mechanism. Biochem Biophys Res Commun 2017; 482:215-220. [DOI: 10.1016/j.bbrc.2016.11.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 11/08/2016] [Indexed: 01/03/2023]
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Tian Z, Liu J, Zhang Y. Key Residues Involved in the Interaction between Cydia pomonella Pheromone Binding Protein 1 (CpomPBP1) and Codlemone. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7994-8001. [PMID: 27709920 DOI: 10.1021/acs.jafc.6b02843] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Codlemone exhibited high affinity to CpomPBP1; studying their binding mode can provide insights into the rational design of active semiochemicals. Our findings suggested that residues including Phe12, Phe36, Trp37, Ile52, Ile 94, Ala115, and Phe118 were favorable to the binding of codlemone to CpomPBP1, whereas residues providing unfavorable contributions such as Ser56 were negative to the binding. van der Waals energy and electrostatic energy, mainly derived from the side chains of favorable residues, contributed most to the formation and stability of the CpomPBP1-codlemone complex. Of the residues involved in the interaction between CpomPBP1 and codlemone, Phe12 and Trp37, the mutation of which into Ala caused a significant decrease of CpomPBP1 binding ability, were two key residues in determining the binding affinity of codlemone to CpomPBP1. This study shed light on discovering novel active semiochemicals as well as facilitating chemical modification of lead semiochemicals.
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Affiliation(s)
- Zhen Tian
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University , Yangling 712100, Shaanxi, China
| | - Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University , Yangling 712100, Shaanxi, China
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University , Yangling 712100, Shaanxi, China
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Liu J, Tian Z, Zhang Y. Structure-based discovery of potentially active semiochemicals for Cydia pomonella (L.). Sci Rep 2016; 6:34600. [PMID: 27708370 PMCID: PMC5052595 DOI: 10.1038/srep34600] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/15/2016] [Indexed: 12/03/2022] Open
Abstract
The development of physiologically active semiochemicals is largely limited by the labor-consuming searching process. How to screen active semiochemicals efficiently is of significance to the extension of behavior regulation in pest control. Here pharmacophore modeling and shape-based virtual screening were combined to predict candidate ligands for Cydia pomonella pheromone binding protein 1 (CpomPBP1). Out of the predicted compounds, ETrME displayed the highest affinity to CpomPBP1. Further studies on the interaction between CpomPBP1 and ETrME, not only depicted the binding mode, but also revealed residues providing negative and positive contributions to the ETrME binding. Moreover, key residues involved in interacting with ETrME of CpomPBP1 were determined as well. These findings were significant to providing insights for the future searching and optimization of active semiochemicals.
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Affiliation(s)
- Jiyuan Liu
- Key Laboratory of Plant Protection Resources &Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.,Department of Medicinal Chemistry, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Zhen Tian
- Key Laboratory of Plant Protection Resources &Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources &Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
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Tian Z, Liu J, Zhang Y. Structural insights into Cydia pomonella pheromone binding protein 2 mediated prediction of potentially active semiochemicals. Sci Rep 2016; 6:22336. [PMID: 26928635 PMCID: PMC4772377 DOI: 10.1038/srep22336] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 02/08/2016] [Indexed: 01/24/2023] Open
Abstract
Given the advantages of behavioral disruption application in pest control and the damage of Cydia pomonella, due progresses have not been made in searching active semiochemicals for codling moth. In this research, 31 candidate semiochemicals were ranked for their binding potential to Cydia pomonella pheromone binding protein 2 (CpomPBP2) by simulated docking, and this sorted result was confirmed by competitive binding assay. This high predicting accuracy of virtual screening led to the construction of a rapid and viable method for semiochemicals searching. By reference to binding mode analyses, hydrogen bond and hydrophobic interaction were suggested to be two key factors in determining ligand affinity, so is the length of molecule chain. So it is concluded that semiochemicals of appropriate chain length with hydroxyl group or carbonyl group at one head tended to be favored by CpomPBP2. Residues involved in binding with each ligand were pointed out as well, which were verified by computational alanine scanning mutagenesis. Progress made in the present study helps establish an efficient method for predicting potentially active compounds and prepares for the application of high-throughput virtual screening in searching semiochemicals by taking insights into binding mode analyses.
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Affiliation(s)
- Zhen Tian
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jiyuan Liu
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yalin Zhang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
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Lu S, Jang H, Nussinov R, Zhang J. The Structural Basis of Oncogenic Mutations G12, G13 and Q61 in Small GTPase K-Ras4B. Sci Rep 2016; 6:21949. [PMID: 26902995 PMCID: PMC4763299 DOI: 10.1038/srep21949] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 02/04/2016] [Indexed: 02/08/2023] Open
Abstract
Ras mediates cell proliferation, survival and differentiation. Mutations in K-Ras4B are predominant at residues G12, G13 and Q61. Even though all impair GAP-assisted GTP → GDP hydrolysis, the mutation frequencies of K-Ras4B in human cancers vary. Here we aim to figure out their mechanisms and differential oncogenicity. In total, we performed 6.4 μs molecular dynamics simulations on the wild-type K-Ras4B (K-Ras4B(WT)-GTP/GDP) catalytic domain, the K-Ras4B(WT)-GTP-GAP complex, and the mutants (K-Ras4B(G12C/G12D/G12V)-GTP/GDP, K-Ras4B(G13D)-GTP/GDP, K-Ras4B(Q61H)-GTP/GDP) and their complexes with GAP. In addition, we simulated 'exchanged' nucleotide states. These comprehensive simulations reveal that in solution K-Ras4B(WT)-GTP exists in two, active and inactive, conformations. Oncogenic mutations differentially elicit an inactive-to-active conformational transition in K-Ras4B-GTP; in K-Ras4B(G12C/G12D)-GDP they expose the bound nucleotide which facilitates the GDP-to-GTP exchange. These mechanisms may help elucidate the differential mutational statistics in K-Ras4B-driven cancers. Exchanged nucleotide simulations reveal that the conformational transition is more accessible in the GTP-to-GDP than in the GDP-to-GTP exchange. Importantly, GAP not only donates its R789 arginine finger, but stabilizes the catalytically-competent conformation and pre-organizes catalytic residue Q61; mutations disturb the R789/Q61 organization, impairing GAP-mediated GTP hydrolysis. Together, our simulations help provide a mechanistic explanation of key mutational events in one of the most oncogenic proteins in cancer.
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Affiliation(s)
- Shaoyong Lu
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Hyunbum Jang
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Ruth Nussinov
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory, National Cancer Institute, Frederick, MD 21702, USA
- Department of Human Genetics and Molecular Medicine, Sackler School of Medicine, Sackler Institute of Molecular Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Jian Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou 213001, China
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