1
|
Huang Z, Wu D, Liu X, Liu Q, Han X, Wang W, Yang X. Indole alkaloids from endophytic fungus Robillarda sessilis and their antibacterial activity. Nat Prod Res 2024:1-10. [PMID: 38299875 DOI: 10.1080/14786419.2023.2297853] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 12/13/2023] [Indexed: 02/02/2024]
Abstract
Three undescribed indole alkaloids, fusarindoles F and G (1 and 2), and chlamydosporin B (3), together with five known compounds (4-8) were isolated from Robillarda sessilis. Their structures were elucidated based on NMR, UV, HRESIMS, and ECD calculation. Fusarindole F (1) own unusual asymmetric bis-indole structure. Compounds 5, 6, 7 exhibited moderate antibacterial activity against methicillin-resistant Staphylococcus aureus with a MIC value of 12.5 μg/mL. According to molecular docking experiment, the target proteins of compound 7 against methicillin-resistant S. aureus may be ELANE, MAOB and STAT3.
Collapse
Affiliation(s)
- Zediao Huang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| | - Di Wu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| | - Xueqiong Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| | - Qingpei Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| | - Xiaole Han
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan, P. R. China
| | - Wenjing Wang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| | - Xiaolong Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, P.R. China
| |
Collapse
|
2
|
Chang J, Zou S, Xu S, Xiao Y, Zhu D. Screening of Inhibitors against Idiopathic Pulmonary Fibrosis: Few-shot Machine Learning and Molecule Docking based Drug Repurposing. Curr Comput Aided Drug Des 2024; 20:134-144. [PMID: 37066777 DOI: 10.2174/1573409919666230417080832] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/12/2023] [Accepted: 02/16/2023] [Indexed: 04/18/2023]
Abstract
INTRODUCTION Idiopathic pulmonary fibrosis is a chronic progressive disorder and is diagnosed as post-COVID fibrosis. Idiopathic pulmonary fibrosis has no effective treatment because of the low therapeutic effects and side effects of currently available drugs. AIM The aim is to screen new inhibitors against idiopathic pulmonary fibrosis from traditional Chinese medicines. METHODS Few-shot-based machine learning and molecule docking were used to predict the potential activities of candidates and calculate the ligand-receptor interactions. In vitro A549 cell model was taken to verify the effects of the selected leads on idiopathic pulmonary fibrosis. RESULTS A logistic regression classifier model with an accuracy of 0.82 was built and, combined with molecule docking, used to predict the activities of candidates. 6 leads were finally screened out and 5 of them were in vitro experimentally verified as effective inhibitors against idiopathic pulmonary fibrosis. CONCLUSION Herbacetin, morusin, swertiamarin, vicenin-2, and vitexin were active inhibitors against idiopathic pulmonary fibrosis. Swertiamarin exhibited the highest anti-idiopathic pulmonary fibrosis effect and should be further in vivo investigated for its activity.
Collapse
Affiliation(s)
- Jun Chang
- College of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, China
| | - Shaoqing Zou
- College of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, China
| | - Subo Xu
- College of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, China
| | - Yiwen Xiao
- College of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, China
| | - Du Zhu
- College of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, China
| |
Collapse
|
3
|
Pan M, Cheng L, Wang Y, Lyu C, Hou C, Zhang Q. Exploration of 2D and 3D-QSAR analysis and docking studies for novel dihydropteridone derivatives as promising therapeutic agents targeting glioblastoma. Front Pharmacol 2023; 14:1249041. [PMID: 37719847 PMCID: PMC10501407 DOI: 10.3389/fphar.2023.1249041] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/21/2023] [Indexed: 09/19/2023] Open
Abstract
Background: Dihydropteridone derivatives represent a novel class of PLK1 inhibitors, exhibiting promising anticancer activity and potential as chemotherapeutic drugs for glioblastoma. Objective: The aim of this study is to develop 2D and 3D-QSAR models to validate the anticancer activity of dihydropteridone derivatives and identify optimal structural characteristics for the design of new therapeutic agents. Methods: The Heuristic method (HM) was employed to construct a 2D-linear QSAR model, while the gene expression programming (GEP) algorithm was utilized to develop a 2D-nonlinear QSAR model. Additionally, the CoMSIA approach was introduced to investigate the impact of drug structure on activity. A total of 200 novel anti-glioma dihydropteridone compounds were designed, and their activity levels were predicted using chemical descriptors and molecular field maps. The compounds with the highest activity were subjected to molecular docking to confirm their binding affinity. Results: Within the analytical purview, the coefficient of determination (R2) for the HM linear model is elucidated at 0.6682, accompanied by an R2 cv of 0.5669 and a residual sum of squares (S2) of 0.0199. The GEP nonlinear model delineates coefficients of determination for the training and validation sets at 0.79 and 0.76, respectively. Empirical modeling outcomes underscore the preeminence of the 3D-QSAR model, succeeded by the GEP nonlinear model, whilst the HM linear model manifested suboptimal efficacy. The 3D paradigm evinced an exemplary fit, characterized by formidable Q2 (0.628) and R2 (0.928) values, complemented by an impressive F-value (12.194) and a minimized standard error of estimate (SEE) at 0.160. The most significant molecular descriptor in the 2D model, which included six descriptors, was identified as "Min exchange energy for a C-N bond" (MECN). By combining the MECN descriptor with the hydrophobic field, suggestions for the creation of novel medications were generated. This led to the identification of compound 21E.153, a novel dihydropteridone derivative, which exhibited outstanding antitumor properties and docking capabilities. Conclusion: The development of 2D and 3D-QSAR models, along with the innovative integration of contour maps and molecular descriptors, offer novel concepts and techniques for the design of glioblastoma chemotherapeutic agents.
Collapse
Affiliation(s)
- Meichen Pan
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Lingxue Cheng
- Department of Gastroenterology, 960th Hospital of the Chinese People’s Liberation Army, Jinan, China
| | - Yiguo Wang
- Medical Laboratory Center, Chinese Academy of Traditional Chinese Medicine, Beijing, China
| | - Chunyi Lyu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chao Hou
- Department of Gastroenterology, 960th Hospital of the Chinese People’s Liberation Army, Jinan, China
| | - Qiming Zhang
- Medical Laboratory Center, Chinese Academy of Traditional Chinese Medicine, Beijing, China
| |
Collapse
|
4
|
Jiang Z, Zou Q, Chen Q, Zhang J, Tang H, Chen J, Qin Y, Yang L, Chen Z, Cao L. Therapeutic role of Wuda granule in gastrointestinal motility disorder through promoting gastrointestinal motility and decreasing inflammatory level. Front Pharmacol 2023; 14:1237686. [PMID: 37670946 PMCID: PMC10476622 DOI: 10.3389/fphar.2023.1237686] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/18/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction: Previous studies indicated that Wuda Granule (WDG) has been applied in the treatment of gastrointestinal motility disorder (GMD), but the effect and underlying mechanisms is yet to be elucidated. This study aimed to explore the mechanism and pharmacological effect of WDG for GMD via network analysis, verification of animal experiments and clinical experiments. Methods: The chemical components of WDG were identified from the Traditional Chinese Medicine Systems Pharmacology Database (TCMSP, http://lsp.nwu.edu.cn/index.php), and the Encyclopedia of Traditional Chinese Medicine (ETCM, http://www.tcmip.cn/ETCM/index.php/Home/Index/) according to oral bioavailability (OB) ≥ 20% and drug-likeness (DL) ≥ 0.10. The targets of WDG compounds were retrieved from the Swiss Target Prediction database (http://www.swisstargetprediction.ch/) and targets related to GMD were retrieved from GeneCards database (https://www.genecards.org/). Network analysis were performed to screen the key active compounds of WDG and its hub targets. Then the pharmacological effect of WDG were verified via vivo experiments in rats and clinical experiments. Results: The results showed that 117 effective active compounds of WDG were screened and 494 targets of WDG compounds targeting GMD were selected. These targets were involved in the biological process of inflammatory regulation and the regulation of gastrointestinal motility. The mechanism was mainly involved in the regulation of PI3K-Akt signaling pathway and Rap1 signaling pathway. In addition, molecular docking analysis suggested that eight key active compounds of WDG may be mainly responsible for the effect of WDG on GMD by targeting HARS, AKT, and PIK3CA, respectively. Animal experiments and clinical trials both suggested that WDG could exert therapeutical effect on GMD via inhibiting inflammation and promoting gastrointestinal motility, it could also improve digestive function of patients with laparoscopic colorectal cancer after surgery. Conclusion: This study was the first to demonstrate that WDG improved GMD mainly via inhibiting inflammatory level and promoting gastrointestinal motility, providing new insights for the understanding of WDG for GMD, inspiration for future research and reference for clinical strategy in terms of the treatment of GMD.
Collapse
Affiliation(s)
- Zhi Jiang
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qiuping Zou
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Emergency Department, Dongguan People’s Hospital, Dongguan, China
| | - Qicheng Chen
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Junhong Zhang
- Department of Research Public Service Center, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hailin Tang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Jingbao Chen
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - You Qin
- Department of Minimally Invasive Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liming Yang
- Department of Minimally Invasive Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhiqiang Chen
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lixing Cao
- Department of Perioperative Research Centre of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
5
|
Wei Y, Chen T, Wang S, Shen C, Song Z, Li A, Li H, Li Y. Integrated strategy for the screening of cyclooxygenase-2 inhibitors from triterpenoid saponins in Clematis tangutica. Phytochem Anal 2023. [PMID: 37431174 DOI: 10.1002/pca.3260] [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] [Grants] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/12/2023] [Accepted: 06/15/2023] [Indexed: 07/12/2023]
Abstract
INTRODUCTION Screening of novel cyclooxygenase-2 (COX-2) inhibitors from complex natural products is not an easy task. OBJECTIVES To establish an efficient and feasible strategy for screening COX-2 inhibitors from triterpenoid saponins (TPSs) in Clematis tangutica. METHODS Taking TPSs in C. tangutica as example, an optimized macroporous resin (MR) method was established for the enrichment of TPSs. High-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (HPLC-QTOFMS) was performed to establish the phytochemical profiling of TPSs. Molecular docking was performed to predict the ligand-target interactions and discover the active substances. Chemometric techniques were performed to visualize the structure-effect relationships. High-speed countercurrent chromatography and preparative HPLC were performed to prepare the targets. In vitro activity experiment of COX-2 was performed to verify the virtual screening results. RESULTS TPSs in C. tangutica were well enriched with the recovery rate of (80.22 ± 2.37)%. Thirty-four kinds of TPSs of oleanane type were deduced by HPLC-QTOFMS. Five TPSs of clematangoside C, clematangoside D, clematangoticoside J, hederoside H1 , and hederasaponin B showed stronger binding abilities with COX-2. The structure with more sugar groups at C-28 may be more conducive to the combination with COX-2. Targets were prepared with purities all above 98%. The IC50 values of target TPSs were 6.03 ± 0.24, 12.44 ± 0.15, 9.36 ± 0.19, 4.78 ± 0.13, and 2.59 ± 0.11 μmol/L, respectively. CONCLUSION The integrated strategy using MR, HPLC-QTOFMS, molecular docking, chemometrics, target preparation, and in vitro verification was feasible for rapidly screening COX-2 inhibitors from TPSs in C. tangutica.
Collapse
Affiliation(s)
- Yangfei Wei
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Hexi University, Zhangye, China
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
| | - Tao Chen
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Shuo Wang
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
| | - Cheng Shen
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
| | - Zhibo Song
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Aijing Li
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Hongmei Li
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Yulin Li
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
| |
Collapse
|
6
|
Wang Y, Liu W, Dong B, Wang D, Nian Y, Zhou H. Isolation and Identification of Herbicidal Active Compounds from Brassica oleracea L. and Exploration of the Binding Sites of Brassicanate A Sulfoxide. Plants (Basel) 2023; 12:2576. [PMID: 37447136 DOI: 10.3390/plants12132576] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023]
Abstract
Brassica oleracea L. has strong allelopathic effects on weeds. However, the allelochemicals with herbicidal activity in B. oleracea L. are still unknown. In this study, we evaluated the activity of allelochemicals isolated from Brassica oleracea L. based on the germination and growth of model plant Lactuca sativa Linn., grass weed Panicum miliaceum, and broadleaf weed Chenopodium album. Additionally, we employed molecular docking to predict the binding of brassicanate A sulfoxide to herbicide targets. The results of this study showed that eight compounds with herbicidal activity were isolated from B. oleracea L., and the predicted results indicated that brassicanate A sulfoxide was stably bound to dihydroxyacid dehydratase, hydroxymethylpyruvate dioxygenase, acetolactate synthase, PYL family proteins and transport inhibitor response 1. This research provides compound sources and a theoretical foundation for the development of natural herbicides.
Collapse
Affiliation(s)
- Yu Wang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China
| | - Wanyou Liu
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China
| | - Baozhu Dong
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China
| | - Dong Wang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China
| | - Yin Nian
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Hongyou Zhou
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China
| |
Collapse
|
7
|
Zhu Z, Guo H, Xu Y, Pius Bassey A, Ali A, Huang M, Huang J. ACE Inhibitory Peptides Derived from Muscovy Duck ( Cairina moschata) Plasma. Foods 2022; 12:foods12010050. [PMID: 36613266 PMCID: PMC9818667 DOI: 10.3390/foods12010050] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/17/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022] Open
Abstract
In this study, angiotensin-converting enzyme inhibitory peptides (ACE-IPs) derived from Muscovy duck (Cairina moschata) plasma hydrolysate (MDPH) were investigated. According to the general research protocol for bioactive peptides, the crude ACE-IPs of Muscovy duck plasma were separated and purified by ultrafiltration, gel chromatography and reversed-phase high-performance liquid chromatography (RP-HPLC). Then the components with the highest ACE inhibition potential were selected for identification. Finally, the inhibition mechanism was explored by molecular docking and in silico simulated digestion. A total of 121 peptides was detected, and five were screened for synthesis verification and molecular docking. The peptide VALSSLRP revealed high ACE inhibitory activity (91.67 ± 0.73%) because this peptide bound tightly to the S1' pocket and formed 3 hydrogen bonds. Meaningfully, this work provides some new information about the generation of ACE-IPs derived from duck blood plasma.
Collapse
Affiliation(s)
- Zongshuai Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Haoyu Guo
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yan Xu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Anthony Pius Bassey
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ahtisham Ali
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ming Huang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jichao Huang
- College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
- Correspondence:
| |
Collapse
|
8
|
Li H, Zhang G, Wang W, Chen C, Jiao L, Wu W. Preparation, Characterization, and Bioavailability of Host-Guest Inclusion Complex of Ginsenoside Re with Gamma-Cyclodextrin. Molecules 2021; 26:7227. [PMID: 34885811 DOI: 10.3390/molecules26237227] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
This work aimed at improving the water solubility of Ginsenoside (G)-Re by forming an inclusion complex. The solubility parameters of G-Re in alpha (α), beta (β), and gamma (γ) cyclodextrin (CD) were investigated. The phase solubility profiles were all classified as AL-type that indicated the 1:1 stoichiometric relationship with the stability constants Ks which were 22 M−1 (α-CD), 612 M−1 (β-CD), and 14,410 M−1 (γ-CD), respectively. Molecular docking studies confirmed the results of phase solubility with the binding energy of −4.7 (α-CD), −5.10 (β-CD), and −6.70 (γ-CD) kcal/mol, respectively. The inclusion complex (IC) of G-Re was prepared with γ-CD via the water-stirring method followed by freeze-drying. The successful preparation of IC was confirmed by powder X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). In-vivo absorption studies were carried out by LC-MS/MS. Dissolution rate of G-Re was increased 9.27 times after inclusion, and the peak blood concentration was 2.7-fold higher than that of pure G-Re powder. The relative bioavailability calculated from the ratio of Area under the curve AUC0–∞ of the inclusion to pure G-Re powder was 171%. This study offers the first report that describes G-Re’s inclusion into γ-CD, and explored the inclusion complex’s mechanism at the molecular level. The results indicated that the solubility could be significantly improved as well as the bioavailability, implying γ-CD was a very suitable inclusion host for complex preparation of G-Re.
Collapse
|
9
|
Li H, Ibrahim MM, Chen H, Li W, Jablonski MM. In Silico Screening and In Vivo Evaluation of Potential CACNA2D1 Antagonists as Intraocular Pressure-Reducing Agents in Glaucoma Therapy. Pharmaceuticals (Basel) 2021; 14:887. [PMID: 34577587 DOI: 10.3390/ph14090887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/19/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Glaucoma is a leading cause of permanent vision loss and current drugs do not halt disease progression. Thus, new therapies targeting different drug targets with novel mechanisms of action are urgently needed. Previously, we identified CACNA2D1 as a novel modulator of intraocular pressure (IOP) and demonstrated that a topically applied CACNA2D1 antagonist—pregabalin (PRG)—lowered IOP in a dose-dependent manner. To further validate this novel IOP modulator as a drug target for IOP-lowering pharmaceutics, a homology model of CACNA2D1 was built and docked against the NCI library, which is one of the world’s largest and most diverse compound libraries of natural products. Acivicin and zoledronic acid were identified using this method and together with PRG were tested for their plausible IOP-lowering effect on Dutch belted rabbits. Although they have inferior potency to PRG, both of the other compounds lower IOP, which in turn validates CACNA2D1 as a valuable drug target in treating glaucoma.
Collapse
|
10
|
Lin TY, Tsai TH, Chen CT, Yang TW, Chang FL, Lo YN, Chung TS, Cheng MH, Chen WC, Tsai KC, Lee YC. Generation of avian-derived anti-B7-H4 antibodies exerts a blockade effect on the immunosuppressive response. Exp Anim 2021; 70:333-343. [PMID: 33716253 PMCID: PMC8390317 DOI: 10.1538/expanim.20-0178] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
For highly conserved mammalian protein, chicken is a suitable immune host to generate antibodies. Monoclonal antibodies have been successfully targeted with
immunity checkpoint proteins as a means of cancer treatment; this treatment enhances tumor-specific immunity responses through immunoregulation. Studies have
identified the importance of B7-H4 in immunoregulation and its use as a potential target for cancer treatment. High levels of B7-H4 expression are found in
tumor tissues and are associated with adverse clinical and pathological characteristics. Using the phage display technique, this study isolated specific
single-chain antibody fragments (scFvs) against B7-H4 from chickens. Our experiment proved that B7-H4 clearly induced the inhibition of T-cell activation.
Therefore, use of anti-B7-H4 scFvs can effectively block the exhaustion of immunity cells and also stimulate and activate T-cells in peripheral blood
mononuclear cells. Sequence analysis revealed that two isolated scFv S2 and S4 have the same VH complementarity-determining regions (CDRs) sequence. Molecule
docking was employed to simulate the complex structures of scFv with B7-H4 to analyze the interaction. Our findings revealed that both scFvs employed CDR-H1 and
CDR-H3 as main driving forces and had strong binding effects with the B7-H4. The affinity of scFv S2 was better because the CDR-L2 loop of the scFv S2 had three
more hydrogen bond interactions with B7-H4. The results of this experiment suggest the usefulness of B7-H4 as a target for immunity checkpoints; the isolated
B7-H4-specific chicken antibodies have the potential for use in future cancer immunotherapy applications.
Collapse
Affiliation(s)
- Tsai-Yu Lin
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan
| | - Tsung-Hsun Tsai
- Department of Psychiatry, Kaohsiung Armed Forces General Hospital, No.2, Zhongzheng 1st Rd., Lingya Dist., Kaohsiung 80284, Taiwan
| | - Chih-Tien Chen
- Institute of Medicine, Chung Shan Medical University, No.110, Sec.1, Jianguo N. Rd., Taichung 40201, Taiwan.,Department of Surgery, Taichung Veterans General Hospital, No.1650, Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan
| | - Tz-Wen Yang
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan
| | - Fu-Ling Chang
- Ph.D. Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, No. 250, Wuxing Street, Taipei 11031, Taiwan
| | - Yan-Ni Lo
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan
| | - Ting-Sheng Chung
- Department of Psychiatry, Kaohsiung Armed Forces General Hospital, No.2, Zhongzheng 1st Rd., Lingya Dist., Kaohsiung 80284, Taiwan
| | - Ming-Hui Cheng
- Department of Laboratory Medicine, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, No. 83, Nanchang St., Luodong Township, Yilan 26546, Taiwan
| | - Wang-Chuan Chen
- The School of Chinese Medicine for Post Baccalaureate, I-Shou University, No.1, Sec. 1, Syuecheng Rd., Dashu District, Kaohsiung 84001, Taiwan.,Department of Chinese Medicine, E-Da Hospital, No.8, Yida Rd., Jiaosu Village Yanchao District, Kaohsiung 82445, Taiwan
| | - Keng-Chang Tsai
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, No. 155-1, Sec. 2, Linong St., Beitou District, Taipei 11221, Taiwan.,Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan
| | - Yu-Ching Lee
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan.,Ph.D. Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan.,Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan.,Ph.D. Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan.,Biomedical Commercialization Center, Taipei Medical University, No. 250, Wuxing Street, Taipei 11031, Taiwan
| |
Collapse
|
11
|
Zhang L, Wei X, Zhang R, Mozdziak PE, Si D, Ahmad B, Cheng Q, Tong Y. Design and Immunological Evaluation of a Hybrid Peptide as a Potent TLR2 Agonist by Structure-Based Virtual Screening. Front Cell Dev Biol 2021; 9:620370. [PMID: 33644058 PMCID: PMC7905067 DOI: 10.3389/fcell.2021.620370] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/15/2021] [Indexed: 12/23/2022] Open
Abstract
Immunity is a versatile defensive response that is involved in protecting against disease by identifying and destroying self and non-self harmful substances. As a state of temporary or permanent immune dysfunction, immunosuppression can make an organism more susceptible to infection, organ injury, and cancer due to damage to the immune system. It has taken a long time to develop new immunomodulatory agents to prevent and treat immunosuppressive diseases. In recent years, Toll-like receptor 2 (TLR2) agonists have been reported to have profound effects on the immune system, and they are regarded as potent immunomodulatory candidates. TP5 and LL-37, the potent immunomodulatory agents, have been reported to produce a robust innate immune response by binding to TLR2. However, their development has been weakened by several concerns, such as potential cytotoxicity, weak physiological stability and poor immunomodulatory activity. To overcome these challenges, hybridization has been proposed. Therefore, six hybrid peptides (LTPa, LTPb, LTPc, TPLa, TPLb, and TPLc) were designed by combining the full-length TP5 with a characteristic fragment of LL-37 that included LL-37 (13-36), LL-37 (17-29), and LL-37 (13-31). LTPa, the most potent TLR2 agonist, was simply and effectively screened by molecular docking and in vitro experiments. Furthermore, the immunomodulatory effects of LTPa were confirmed by a CTX-immunosuppressed murine model, which demonstrated that LTPa successfully inhibit immunosuppression, increased immune organ indices, enhanced DC maturation, regulated T lymphocyte subsets, and increased cytokine and Ig contents. Our study also revealed that the immunomodulatory effects of LTPa are associated with binding to TLR2, forming TLR2 clusters, and activating the NF-κB signaling pathway.
Collapse
Affiliation(s)
- Lulu Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xubiao Wei
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China.,School of Pharmaceutical Sciences, Tsinghua University, Beijing, China.,Prestage Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, United States
| | - Rijun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Paul E Mozdziak
- Prestage Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, United States
| | - Dayong Si
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Baseer Ahmad
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qiang Cheng
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yucui Tong
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| |
Collapse
|
12
|
Wang H, Yu W, Zhang D, Zhao Y, Chen C, Zhu H, Cai E, Yan Z. Cytotoxic and anti-tumor effects of 3,4- seco-lupane triterpenoids from the leaves of Eleutherococcus sessiliflorus against hepatocellular carcinoma. Nat Prod Res 2020; 36:1062-1066. [PMID: 33183092 DOI: 10.1080/14786419.2020.1844698] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A rich of 3,4-seco-lupane triterpenoids (3,4-SLT), including chiisanoside (CSS), divaroside (DVS), sessiloside-A1 (SSA), chiisanogenin (CSG), sessiligenin (SSG), were isolated from the ethanol extract of the leaves of Eleutherococcus sessiliflorus (LES). The present study was performed to explore the cytotoxic and anti-tumor effects of the isolated five ones, as well as potential molecular mechanisms. The results of a CCK-8 assay demonstrated that these 3,4-SLT can inhibit the growth of HepG2 cells, and SSG showed the most significant cytotoxicity. Hoechst 33258 fluorescence staining and Annexin V-FITC/PI staining indicated that 3,4-SLT in LES can induce HepG2 cell apoptosis effectively. The AutoDock Vina program was used to simulate molecular docking of drugs and targets to discuss possible pharmacological mechanisms. Besides, western blot and qRT-PCR results indicated that SSG can inhibit PI3K/AKT signaling pathway through controlling multi-targets. This study suggested that 3,4-SLT might become a new research hotspot for antineoplastic drugs.
Collapse
Affiliation(s)
- Haohao Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Wenliu Yu
- Department of Pharmacy, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Danfeng Zhang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Chen Chen
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Hongyan Zhu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Enbo Cai
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Zhaowei Yan
- Department of Pharmacy, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
13
|
Fu Y, Ye T, Liu YX, Wang J, Ye F. Based on the Virtual Screening of Multiple Pharmacophores, Docking and Molecular Dynamics Simulation Approaches toward the Discovery of Novel HPPD Inhibitors. Int J Mol Sci 2020; 21:E5546. [PMID: 32756361 DOI: 10.3390/ijms21155546] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 07/31/2020] [Indexed: 12/31/2022] Open
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is an iron-dependent non-heme oxygenase involved in the catabolic pathway of tyrosine, which is an important enzyme in the transformation of 4-hydroxyphenylpyruvic acid to homogentisic acid, and thus being considered as herbicide target. Within this study, a set of multiple structure-based pharmacophore models for HPPD inhibitors were developed. The ZINC and natural product database were virtually screened, and 29 compounds were obtained. The binding mode of HPPD and its inhibitors obtained through molecular docking study showed that the residues of Phe424, Phe381, His308, His226, Gln307 and Glu394 were crucial for activity. Molecular-mechanics-generalized born surface area (MM/GBSA) results showed that the coulomb force, lipophilic and van der Waals (vdW) interactions made major contributions to the binding affinity. These efforts will greatly contribute to design novel and effective HPPD inhibitory herbicides.
Collapse
|
14
|
Cai W, Wu J, Sun Y, Liu A, Wang R, Ma Y, Shuqing Wang, Dong W. Synthesis, evaluation, molecular dynamics simulation and targets identification of novel pyrazole-containing imide derivatives. J Biomol Struct Dyn 2020; 39:2176-2188. [PMID: 32189577 DOI: 10.1080/07391102.2020.1745284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A new series of novel pyrazole-containing imide derivatives were synthesized and evaluated for their anticancer activities against A-549, Bel7402, and HCT-8 cell lines. Among these compounds A2, A4, A11 and A14 possessed high inhibition activity against A-549 cell lines with IC50 values at 4.91, 3.22, 27.43 and 18.14 μM, respectively, better than that of 5-fluorouracil (IC50=59.27 μM). A2, A4, and A11 also exhibited significant inhibitory activity towards HCT-8 and Bel7402 cell lines. Interestingly, the Heat Shock Protein 90α (Hsp90α, PDB ID: 1UYK) was found to be the potential drug target of these synthesized compounds with the aid of PharmMapper server (http://lilab.ecust.edu.cn/pharmmapper/) and docking module of Schrödinger (Maestro 10.2). Additionally, molecular dynamics simulation was performed out to explore the most likely binding mode of compound A2 with Hsp90α.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Wenxi Cai
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China.,Department of Pharmacy, Characteristic Medical Center of PAP, Tianjin, China
| | - Jingwei Wu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yingzhan Sun
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Ailin Liu
- National Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Runling Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Ying Ma
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Shuqing Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Weili Dong
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| |
Collapse
|
15
|
Abstract
Thrombin can be used as a target for its inhibitors to prevent blood coagulation. A novel peptide (TKLTEEEKNR, PfCN) identified from αS2-casein (fragments 211-220) with high anticoagulant activity was screened and prepared. The activated partial thromboplastin time, prothrombin time, and thrombin time, at the concentration of 4 mM, prolonged about 19, 2.5 and 5.5 s, respectively. At the same concentration, the fibrinogen clotting time prolonged from 25.5 ± 0.7 to 38.3 ± 1.3 s. The thrombin inhibitory efficiency in vitro (IC50 value of 29.27 mM) and antithrombosis effect in vivo were determined. The secondary structure of thrombin, which was influenced by PfCN, indicates that PfCN can bind to thrombin. Isothermal titration calorimetry and the chromogenic substrate test showed that PfCN belongs to the bivalent thrombin inhibitor like bivalirudin. Although the effect was not as good as bivalirudin, in the animal experiment, bleeding occurred in the bivalirudin group but not in the PfCN group. Moreover, molecular docking illustrates the mechanism for the antithrombin activity of PfCN. These results indicated that PfCN could be used as an effective thrombin inhibitor with broad potential for the prevention of thrombotic acute pulmonary embolism and other thrombotic events.
Collapse
Affiliation(s)
- Hanxiong Liu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
| | - Maolin Tu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
| | - ShuZhen Cheng
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Zhe Xu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
| | - Xianbing Xu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
| | - Ming Du
- School of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing , Dalian Polytechnic University , Dalian 116034 , China
| |
Collapse
|
16
|
Liu Y, Liu X, Li L, Dai R, Shi M, Xue H, Liu Y, Wang H. Identification and Structure-Activity Studies of 1,3-Dibenzyl-2-aryl imidazolidines as Novel Hsp90 Inhibitors. Molecules 2019; 24:E2105. [PMID: 31163701 PMCID: PMC6600241 DOI: 10.3390/molecules24112105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 02/28/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 12/12/2022] Open
Abstract
Hsp90 (Heat shock protein 90) is involved in various processes in cancer occurrence and development, and therefore represents a promising drug target for cancer therapy. In this work, a virtual screening strategy was employed, leading to the identification of a series of compounds bearing a scaffold of 1,3-dibenzyl-2-aryl imidazolidine as novel Hsp90 inhibitors. Compound 4a showed the highest binding affinity to Hsp90α (IC50 = 12 nM) in fluorescence polarization (FP) competition assay and the strongest anti-proliferative activity against human breast adenocarcinoma cell line (MCF-7) and human lung epithelial cell line (A549) with IC50 values of 21.58 μM and 31.22 μM, respectively. Western blotting assays revealed that these novel Hsp90 inhibitors significantly down-regulated the expression level of Her2, a client protein of Hsp90, resulting in the cytotoxicity of these novel Hsp90 inhibitors. The molecular docking study showed that these novel Hsp90 inhibitors bound to the adenosine triphosphate (ATP) binding site at the N-terminus of Hsp90. Furthermore, structure-activity relationship studies indicated that the N-benzyl group is important for the anti-cancer activity of 1,3-dibenzyl-2-aryl imidazolidines.
Collapse
Affiliation(s)
- Yajun Liu
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Xiaoxia Liu
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Lihong Li
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Rui Dai
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Meiyun Shi
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Hongyu Xue
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Yong Liu
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| | - Hecheng Wang
- School of Life Science and Medicine, Dalian University of Technology, Dagong Road No. 2, Panjin 124221, China.
| |
Collapse
|
17
|
Li R, Du Y, Shen J. Molecular modelling studies on cinnoline-based BTK inhibitors using docking and structure-based 3D-QSAR. SAR QSAR Environ Res 2018; 29:847-873. [PMID: 30280589 DOI: 10.1080/1062936x.2018.1518927] [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] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
BTK inhibitors have been proved as an effective target for B-cell malignancies. Ibrutinib is the most advanced irreversible BTK inhibitor for treating mantle cell lymphoma/chronic lymphocytic leukaemia but with existing drug resistance and adverse effects. To design novel effective and safety reversible BTK inhibitors, 115 newly cinnoline analogues were selected to perform molecular docking and 3D-QSAR study because of the main scaffold similarity to Ibrutinib. Both established CoMFA and CoMSIA models obtained high predictive and satisfactory value. CoMFA/CoMSIA contour maps demonstrated that bulky substitutions are preferred at R1 and R3 positions, and introducing hydrophilic and negative electrostatic substitutions at R1 positions is important for improving BTK inhibitory activities. These results will be useful to provide clues for rationally designing novel and high potency BTK inhibitors.
Collapse
Affiliation(s)
- R Li
- a School of Chemistry and Pharmaceutical Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , China
| | - Y Du
- a School of Chemistry and Pharmaceutical Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , China
| | - J Shen
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica , Chinese Academy of Sciences , Shanghai , China
| |
Collapse
|
18
|
Lv XH, Ren ZL, Liu H, Li HD, Li QS, Wang L, Zhang LS, Yao XK, Cao HQ. Design, Synthesis and Biological Evaluation of Novel Pyrazole Sulfonamide Derivatives as Potential AHAS Inhibitors. Chem Pharm Bull (Tokyo) 2018; 66:358-362. [PMID: 29607900 DOI: 10.1248/cpb.c17-00761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Acetohydroxy acid synthase (AHAS; EC 2.2.1.6, also referred to as acetolactate synthase, ALS) has been considered as an attractive target for the design of herbicides. In this work, an optimized pyrazole sulfonamide base scaffold was designed and introduced to derive novel potential AHAS inhibitors by introducing a pyrazole ring in flucarbazone. The results of in vivo herbicidal activity evaluation indicates compound 3b has the most potent activity with rape root length inhibition values of 81% at 100 mg/L, and exhibited the best inhibitory ability against Arabidopsis thaliana AHAS. With molecular docking, compound 3b insert into Arabidopsis thaliana AHAS stably by an H-bond with Arg377 and cation-π interactions with Arg377, Trp574, Tyr579. This study suggests that compound 3b may serve as a potential AHAS inhibitor which can be used as a novel herbicides and provides valuable clues for the further design and optimization of AHAS inhibitors.
Collapse
Affiliation(s)
- Xian-Hai Lv
- School of Science, Anhui Agricultural University
| | - Zi-Li Ren
- School of Plant Protection, Anhui Agricultural University
| | - Hao Liu
- School of Science, Anhui Agricultural University
| | - Hai-Dong Li
- School of Materials, The University of Manchester
| | - Qing-Shan Li
- School of Medical Engineering, Hefei University of Technology.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University
| | - Li Wang
- School of Science, Anhui Agricultural University
| | | | | | - Hai-Qun Cao
- School of Plant Protection, Anhui Agricultural University
| |
Collapse
|
19
|
Fu Y, Sun YN, Yi KH, Li MQ, Cao HF, Li JZ, Ye F. Combination of Virtual Screening Protocol by in Silico toward the Discovery of Novel 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. Front Chem 2018; 6:14. [PMID: 29468151 PMCID: PMC5807903 DOI: 10.3389/fchem.2018.00014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 01/18/2018] [Indexed: 11/13/2022] Open
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) is a potent new bleaching herbicide target. Therefore, in silico structure-based virtual screening was performed in order to speed up the identification of promising HPPD inhibitors. In this study, an integrated virtual screening protocol by combining 3D-pharmacophore model, molecular docking and molecular dynamics (MD) simulation was established to find novel HPPD inhibitors from four commercial databases. 3D-pharmacophore Hypo1 model was applied to efficiently narrow potential hits. The hit compounds were subsequently submitted to molecular docking studies, showing four compounds as potent inhibitor with the mechanism of the Fe(II) coordination and interaction with Phe360, Phe403, and Phe398. MD result demonstrated that nonpolar term of compound 3881 made great contributions to binding affinities. It showed an IC50 being 2.49 μM against AtHPPD in vitro. The results provided useful information for developing novel HPPD inhibitors, leading to further understanding of the interaction mechanism of HPPD inhibitors.
Collapse
Affiliation(s)
- Ying Fu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| | - Yi-Na Sun
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| | - Ke-Han Yi
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| | - Ming-Qiang Li
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| | - Hai-Feng Cao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| | - Jia-Zhong Li
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Fei Ye
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, China
| |
Collapse
|
20
|
Wei J, Li D, Xi X, Liu L, Zhao X, Wu W, Zhang J. Molecular Insights into the Potential Insecticidal Interaction of β-Dihydroagarofuran Derivatives with the H Subunit of V-ATPase. Molecules 2017; 22:molecules22101701. [PMID: 29019960 PMCID: PMC6151423 DOI: 10.3390/molecules22101701] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 12/05/2022] Open
Abstract
Celangulin V (CV), one of dihydroagarofuran sesquiterpene polyesters isolated from Chinese bittersweet (Celastrus angulatus Maxim), is famous natural botanical insecticide. Decades of research suggests that is displays excellent insecticidal activity against some insects, such as Mythimna separata Walker. Recently, it has been validated that the H subunit of V-ATPase is one of the target proteins of the insecticidal dihydroagarofuran sesquiterpene polyesters. As a continuation of the development of new pesticides from these natural products, a series of β-dihydroagarofuran derivatives have been designed and synthesized. The compound JW-3, an insecticidal derivative of CV with a p-fluorobenzyl group, exhibits higher insecticidal activity than CV. In this study, the potential inhibitory effect aused by the interaction of JW-3 with the H subunit of V-ATPase c was verified by confirmatory experiments at the molecular level. Both spectroscopic techniques and isothermal titration calorimetry measurements showed the binding of JW-3 to the subunit H of V-ATPase was specific and spontaneous. In addition, the possible mechanism of action of the compound was discussed. Docking results indicated compound JW-3 could bind well in ‘the interdomain cleft’ of the V-ATPase subunit H by the hydrogen bonding and make conformation of the ligand–protein complex become more stable. All results are the further validations of the hypothesis, that the target protein of insecticidal dihydroagarofuran sesquiterpene polyesters and their β-dihydroagarofuran derivatives is the subunit H of V-ATPase. The results also provide new ideas for developing pesticides acting on V-ATPase of insects.
Collapse
Affiliation(s)
- Jielu Wei
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Ding Li
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Xin Xi
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Lulu Liu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Ximei Zhao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Wenjun Wu
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling 712100, Shaanxi, China.
| | - Jiwen Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling 712100, Shaanxi, China.
| |
Collapse
|
21
|
Lv XH, Ren ZL, Liu P, Li BX, Li QS, Chu MJ, Cao HQ. Design, synthesis and biological evaluation of novel nicotinamide derivatives bearing a substituted pyrazole moiety as potential SDH inhibitors. Pest Manag Sci 2017; 73:1585-1592. [PMID: 27860139 DOI: 10.1002/ps.4488] [Citation(s) in RCA: 14] [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: 07/20/2016] [Revised: 09/08/2016] [Accepted: 11/15/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Succinate dehydrogenase (SDH) plays an important role in the Krebs cycle, which is considered as an attractive target for development of succinate dehydrogenase inhibitors (SDHIs) based on antifungal agents. Thus, in order to discover novel molecules with high antifungal activities, SDH as the target for a series of novel nicotinamide derivatives bearing substituted pyrazole moieties were designed and synthesised via a one-pot reaction. RESULTS The biological assay data showed that compound 3 l displayed the most potent antifungal activity with EC50 values of 33.5 and 21.4 µm against Helminthosporium maydis and Rhizoctonia cerealis, respectively. Moreover, 3 l exhibited the best inhibitory ability against SDH enzymes. The results of docking simulation showed that 3 l was deeply embedded into the SDH binding pocket, and the binding model was stabilised by a cation-π interaction with Arg 43, Tyr 58 and an H-bond with Trp 173. CONCLUSION The study suggests that the pyrazole nicotinamide derivative 3 l may serve as a potential SDHI that can be used as a novel antifungal agent, and provides valuable clues for the further design and optimisation of SDH inhibitors. © 2016 Society of Chemical Industry.
Collapse
Affiliation(s)
- Xian-Hai Lv
- School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China
- School of Science, Anhui Agricultural University, Hefei, P.R. China
| | - Zi-Li Ren
- School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China
| | - Peng Liu
- School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China
| | - Bing-Xin Li
- School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China
| | - Qing-Shan Li
- School of Medical Engineering, Hefei University of Technology, Hefei, P.R. China
| | - Ming-Jie Chu
- School of Science, Anhui Agricultural University, Hefei, P.R. China
| | - Hai-Qun Cao
- School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China
| |
Collapse
|
22
|
Fu Y, Sun YN, Yi KH, Li MQ, Cao HF, Li JZ, Ye F. 3D Pharmacophore-Based Virtual Screening and Docking Approaches toward the Discovery of Novel HPPD Inhibitors. Molecules 2017; 22:molecules22060959. [PMID: 28598377 PMCID: PMC6152767 DOI: 10.3390/molecules22060959] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [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: 04/29/2017] [Accepted: 06/05/2017] [Indexed: 11/16/2022] Open
Abstract
p-Hydroxyphenylpyruvate dioxygenase (HPPD) is not only the useful molecular target in treating life-threatening tyrosinemia type I, but also an important target for chemical herbicides. A combined in silico structure-based pharmacophore and molecular docking-based virtual screening were performed to identify novel potential HPPD inhibitors. The complex-based pharmacophore model (CBP) with 0.721 of ROC used for screening compounds showed remarkable ability to retrieve known active ligands from among decoy molecules. The ChemDiv database was screened using CBP-Hypo2 as a 3D query, and the best-fit hits subjected to molecular docking with two methods of LibDock and CDOCKER in Accelrys Discovery Studio 2.5 (DS 2.5) to discern interactions with key residues at the active site of HPPD. Four compounds with top rankings in the HipHop model and well-known binding model were finally chosen as lead compounds with potential inhibitory effects on the active site of target. The results provided powerful insight into the development of novel HPPD inhibitors herbicides using computational techniques.
Collapse
Affiliation(s)
- Ying Fu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Yi-Na Sun
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Ke-Han Yi
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Ming-Qiang Li
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Hai-Feng Cao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Jia-Zhong Li
- School of Pharmacy, Lanzhou University, 199 West Donggang Rd., Lanzhou 730000, China.
| | - Fei Ye
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| |
Collapse
|
23
|
Dai L, Li Z, Yu J, Ma M, Zhang R, Chen H, Pham T. The CYP51F1 Gene of Leptographium qinlingensis: Sequence Characteristic, Phylogeny and Transcript Levels. Int J Mol Sci 2015; 16:12014-34. [PMID: 26016505 PMCID: PMC4490426 DOI: 10.3390/ijms160612014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 03/06/2015] [Accepted: 05/04/2015] [Indexed: 11/16/2022] Open
Abstract
Leptographium qinlingensis is a fungal associate of the Chinese white pine beetle (Dendroctonus armandi) and a pathogen of the Chinese white pine (Pinus armandi) that must overcome the terpenoid oleoresin defenses of host trees. L. qinlingensis responds to monoterpene flow with abundant mechanisms that include export and the use of these compounds as a carbon source. As one of the fungal cytochrome P450 proteins (CYPs), which play important roles in general metabolism, CYP51 (lanosterol 14-α demethylase) can catalyze the biosynthesis of ergosterol and is a target for antifungal drug. We have identified an L. qinlingensis CYP51F1 gene, and the phylogenetic analysis shows the highest homology with the 14-α-demethylase sequence from Grosmannia clavigera (a fungal associate of Dendroctonus ponderosae). The transcription level of CYP51F1 following treatment with terpenes and pine phloem extracts was upregulated, while using monoterpenes as the only carbon source led to the downregulation of CYP5F1 expression. The homology modeling structure of CYP51F1 is similar to the structure of the lanosterol 14-α demethylase protein of Saccharomyces cerevisiae YJM789, which has an N-terminal membrane helix 1 (MH1) and transmembrane helix 1 (TMH1). The minimal inhibitory concentrations (MIC) of terpenoid and azole fungicides (itraconazole (ITC)) and the docking of terpenoid molecules, lanosterol and ITC in the protein structure suggested that CYP51F1 may be inhibited by terpenoid molecules by competitive binding with azole fungicides.
Collapse
Affiliation(s)
- Lulu Dai
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Zhumei Li
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Jiamin Yu
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Mingyuan Ma
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Ranran Zhang
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Hui Chen
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Thanh Pham
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
24
|
Xiao JJ, Liao M, Chu MJ, Ren ZL, Zhang X, Lv XH, Cao HQ. Design, synthesis and anti-tobacco mosaic virus (TMV) activity of 5-chloro-N-(4-cyano-1-aryl-1H-pyrazol-5-yl)-1-aryl-3-methyl-1H-pyrazole-4-carboxamide derivatives. Molecules 2015; 20:807-21. [PMID: 25574822 PMCID: PMC6272160 DOI: 10.3390/molecules20010807] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/29/2014] [Indexed: 11/16/2022] Open
Abstract
A series of novel pyrazole amide derivatives 3a-3p which take TMV PC protein as the target has been designed and synthesized by the reactions of 5-chloro-1-aryl-3-methyl-1H-pyrazole-4-carboxylic acids with 5-amino-1-aryl-1H-pyrazole-4-carbonitriles. All the compounds were characterized by 1H-NMR, mass spectroscopy and elemental analysis. Preliminary bioassays indicated that all the compounds acted against the tobacco mosaic virus (TMV) with different in vivo and in vitro modes at 500 μg/mL and were found to possess promising activity. Especially, compound 3p showed the most potent biological activity against tobacco mosaic virus (TMV) compared to ningnanmycin, and a molecular docking study was performed and the binding model revealed that the pyrazole amide moiety was tightly embedded in the binding sites of TMV PC (PDB code: 2OM3).
Collapse
Affiliation(s)
- Jin-Jing Xiao
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Min Liao
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Ming-Jie Chu
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Zi-Li Ren
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Xin Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China.
| | - Xian-Hai Lv
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Hai-Qun Cao
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| |
Collapse
|