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Jia M, Pei Y, Li N, Zhang Y, Song J, Niu JB, Yang H, Zhang S, Sun M. Synthesis and biological evaluation of 4-phenyl-5-quinolinyl substituted isoxazole analogues as potent cytotoxic and tubulin polymerization inhibitors against ESCC. Eur J Med Chem 2024; 275:116611. [PMID: 38901104 DOI: 10.1016/j.ejmech.2024.116611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/09/2024] [Accepted: 06/16/2024] [Indexed: 06/22/2024]
Abstract
The identification of chemically different inhibitors that target the colchicine site of tubulin is still of great value for cancer treatment. Combretastatin A-4(CA-4), a naturally occurring colchicine-site binder characterized by its structural simplicity and biological activity, has served as a structural blueprint for the development of novel analogues with improved safety and therapeutic efficacy. In this study, a library of forty-eight 4-phenyl-5-quinolinyl substituted triazole, pyrazole or isoxazole analouges of CA-4, were synthesized and evaluated for their cytotoxicity against Esophageal Squamous Cell Carcinoma (ESCC) cell lines. Compound C11, which features a 2-methyl substitution at the quinoline and carries an isoxazole ring, emerged as the most promising, with 48 h IC50s of less than 20 nmol/L against two ESCC cell lines. The findings from EBI competitive assay, CETA, and in vitro tubulin polymerization assay of C11 are consistent with those of the positive control colchicine, demonstrating the clear affinity of compound C11 to the colchicine binding site. The subsequent cellular-based mechanism studies revealed that C11 significantly inhibited ESCC cell proliferation, arrested cell cycle at the M phase, induced apoptosis, and impeded migration. Experiments conducted in vivo further confirmed that C11 effectively suppressed the growth of ESCC without showing any toxicity towards the selected animal species. Overall, our research suggests that the tubulin polymerization inhibitor incorporating quinoline and the isoxazole ring may deserve consideration for cancer therapy.
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Affiliation(s)
- Meiqi Jia
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yuanyuan Pei
- School of Pharmaceutical Sciences, and Institute of Drug Discovery & Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Na Li
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Ying Zhang
- School of Pharmaceutical Sciences, and Institute of Drug Discovery & Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Jian Song
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jin-Bo Niu
- The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450000, China
| | - Hua Yang
- School of Pharmaceutical Sciences, and Institute of Drug Discovery & Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Saiyang Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China.
| | - Moran Sun
- School of Pharmaceutical Sciences, and Institute of Drug Discovery & Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China.
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2
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Shawky AM, Almalki FA, Abdalla AN, Youssif BGM, Abdel-Fattah MM, Hersi F, El-Sherief HAM, Ibrahim NA, Gouda AM. Discovery and optimization of 2,3-diaryl-1,3-thiazolidin-4-one-based derivatives as potent and selective cytotoxic agents with anti-inflammatory activity. Eur J Med Chem 2023; 259:115712. [PMID: 37567059 DOI: 10.1016/j.ejmech.2023.115712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023]
Abstract
Several studies have indicated the potential therapeutic outcomes of combining selective COX-2 inhibitors with tubulin-targeting anticancer agents. In the current study, a novel series of thiazolidin-4-one-based derivatives (7a-q) was designed by merging the pharmacophoric features of some COXs inhibitors and tubulin polymerization inhibitors. Compounds 7a-q were synthesized and evaluated for their cytotoxic activity against MCF7, HT29, and A2780 cancer cell lines (IC50 = 0.02-17.02 μM). The cytotoxicity of 7a-q was also assessed against normal MRC5 cells (IC50 = 0.47-13.46 μM). Compounds 7c, 7i, and 7j, the most active in the MTT assay, significantly reduced the number of HT29 colonies compared to the control. Compounds 7c, 7i, and 7j also induced significant decreases in the tumor volumes and masses in Ehrlich solid carcinoma-bearing mice compared to the control. The three compounds also exhibited significant anti-HT29 migration activity in the wound-healing assay. They have also induced cell cycle arrest in HT29 cells at the S and G2/M phases. In addition, they induced significant increases in both early and late apoptotic events in HT29 cells compared to the control, where 7j showed the highest effect. On the other hand, compound 7j (1 μM) displayed weak inhibitory activity against tubulin polymerization compared to colchicine (3 μM). On the other hand, compounds 7a-q inhibited the activity of COX-2 (IC50 = 0.42-29.11 μM) compared to celecoxib (IC50 = 0.86 μM). In addition, 7c, 7i, and 7j showed moderate inhibition of inflammation in rats compared to indomethacin, with better GIT safety profiles. Molecular docking analysis revealed that 7c, 7i, and 7j have higher binding free energies towards COX-2 than COX-1. These above results suggested that 7j could serve as a potential anticancer drug candidate.
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Affiliation(s)
- Ahmed M Shawky
- Science and Technology Unit (STU), Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Faisal A Almalki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Ashraf N Abdalla
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Umm Al-Qura University, Makkah, 21955, Saudi Arabia; Department of Pharmacology and Toxicology, Medicinal and Aromatic Plants Research Institute, National Center for Research, Khartoum, 2404, Sudan
| | - Bahaa G M Youssif
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Maha M Abdel-Fattah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Fatima Hersi
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Hany A M El-Sherief
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Nashwa A Ibrahim
- Medicinal Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Ahmed M Gouda
- Medicinal Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt.
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3
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Zhang YF, Huang J, Zhang WX, Liu YH, Wang X, Song J, Jin CY, Zhang SY. Tubulin degradation: Principles, agents, and applications. Bioorg Chem 2023; 139:106684. [PMID: 37356337 DOI: 10.1016/j.bioorg.2023.106684] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
The microtubule system plays an important role in the mitosis and growth of eukaryotic cells, and it is considered as an appealing and highly successful molecular target for cancer treatment. In fact, microtubule targeting agents, such as paclitaxel and vinblastine, have been approved by FDA for tumor therapy, which have achieved significant therapeutic effects and sales performance. At present, microtubule targeting agents mainly include microtubule-destabilizing agents, microtubule-stabilizing agents, and a few tubulin degradation agents. Although there are few reports about tubulin degradation agents at present, tubulin degradation agents show great potential in overcoming multidrug resistance and reducing neurotoxicity. In addition, some natural drugs could specifically degrade tubulin in tumor cells, but have no effect in normal cells, thus showing a good biosafety profile. Therefore, tubulin degradation agents might exhibit a better application. Currently, some small molecules have been designed to promote tubulin degradation with potent antiproliferative activities, showing the potential for cancer treatment. In this work, we reviewed the reports on tubulin degradation, and focused on the degradation mechanism and important functional groups of chemically synthesized compounds, hoping to provide help for the degradation design of tubulin.
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Affiliation(s)
- Yi-Fan Zhang
- School of Pharmaceutical Sciences, Institute of Drug Discovery & Development, Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China
| | - Jiao Huang
- School of Pharmaceutical Sciences, Institute of Drug Discovery & Development, Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China
| | - Wei-Xin Zhang
- School of Pharmaceutical Sciences, Institute of Drug Discovery & Development, Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China
| | - Yun-He Liu
- School of Pharmaceutical Sciences, Institute of Drug Discovery & Development, Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China
| | - Xiao Wang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Jian Song
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Cheng-Yun Jin
- School of Pharmaceutical Sciences, Institute of Drug Discovery & Development, Key Laboratory of Advanced Drug Preparation Technologies (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| | - Sai-Yang Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China.
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4
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Zhang Y, Wu C, Zhang N, Fan R, Ye Y, Xu J. Recent Advances in the Development of Pyrazole Derivatives as Anticancer Agents. Int J Mol Sci 2023; 24:12724. [PMID: 37628906 PMCID: PMC10454718 DOI: 10.3390/ijms241612724] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/06/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Pyrazole derivatives, as a class of heterocyclic compounds, possess unique chemical structures that confer them with a broad spectrum of pharmacological activities. They have been extensively explored for designing potent and selective anticancer agents. In recent years, numerous pyrazole derivatives have been synthesized and evaluated for their anticancer potential against various cancer cell lines. Structure-activity relationship studies have shown that appropriate substitution on different positions of the pyrazole ring can significantly enhance anticancer efficacy and tumor selectivity. It is noteworthy that many pyrazole derivatives have demonstrated multiple mechanisms of anticancer action by interacting with various targets including tubulin, EGFR, CDK, BTK, and DNA. Therefore, this review summarizes the current understanding on the structural features of pyrazole derivatives and their structure-activity relationships with different targets, aiming to facilitate the development of potential pyrazole-based anticancer drugs. We focus on the latest research advances in anticancer activities of pyrazole compounds reported from 2018 to present.
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Affiliation(s)
- Yingqian Zhang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (C.W.); (N.Z.); (R.F.); (Y.Y.)
- Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China
| | - Chenyuan Wu
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (C.W.); (N.Z.); (R.F.); (Y.Y.)
- Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China
| | - Nana Zhang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (C.W.); (N.Z.); (R.F.); (Y.Y.)
- Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China
| | - Rui Fan
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (C.W.); (N.Z.); (R.F.); (Y.Y.)
- Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China
| | - Yang Ye
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (C.W.); (N.Z.); (R.F.); (Y.Y.)
- Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China
| | - Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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5
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Hoti Q, Rustem DG, Dalmizrak O. Avermectin B1a Shows Potential Anti-Proliferative and Anticancer Effects in HCT-116 Cells via Enhancing the Stability of Microtubules. Curr Issues Mol Biol 2023; 45:6272-6282. [PMID: 37623214 PMCID: PMC10452980 DOI: 10.3390/cimb45080395] [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: 06/22/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
Avermectins are a group of macrocyclic lactones that are commonly used as pesticides to treat pests and parasitic worms. Some members of the avermectin family, such as ivermectin, have been found to exhibit anti-proliferative activity toward cancer cells. This study aimed to investigate the potential anti-cancer activities of avermectin B1a using the HCT-116 colon cancer cell line. The MTT assay was used to calculate the IC50 by incubating cells with increasing doses of avermectin B1a for 24, 48, and 72 h. Flow cytometry was used to evaluate apoptosis following the 24 h incubation of cells. The migration capacity of the HCT-116 cells in the absence or presence of avermectin B1a was also investigated. Finally, tubulin polymerization in the presence of avermectin B1a was evaluated. Avermectin B1a presented anti-proliferative activity with an IC50 value of 30 μM. Avermectin B1a was found to promote tubulin polymerization at 30 μM. In addition, avermectin B1a induced apoptosis in HCT-116 cells and substantially diminished their ability to migrate. Avermectin B1a exhibits significant anti-cancer activity and enhances tubulin polymerization, suggesting that it can be used as a promising microtubule-targeting agent for the development of future anticancer drugs.
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Affiliation(s)
| | | | - Ozlem Dalmizrak
- Department of Medical Biochemistry, Faculty of Medicine, Near East University, Nicosia, TRNC, 99138, Mersin 10, Turkey; (Q.H.); (D.G.R.)
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6
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Abdelshaheed MM, El Subbagh HI, Tantawy MA, Attia RT, Youssef KM, Fawzy IM. Discovery of new pyridine heterocyclic hybrids; design, synthesis, dynamic simulations, and in vitro and in vivo breast cancer biological assays. RSC Adv 2023; 13:15689-15703. [PMID: 37235111 PMCID: PMC10206482 DOI: 10.1039/d3ra02875e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Pyridine is a nitrogen bearing heterocyclic scaffold that shows a wide range of biological activities. The pyridine nucleus has become an interesting target for medicinal chemistry researchers worldwide. Several pyridine derivatives exhibited good anticancer effects against diverse cell lines. Therefore, to explore new anticancer pyridine entities, novel pyridine derivatives were designed and synthesized and evaluated for their anticancer abilities in vitro and in vivo. All of the target compounds were evaluated against three different human cancer cell lines (Huh-7, A549 and MCF-7) via MTT assay. Most of the compounds exhibited significant cytotoxic activities. Compounds 3a, 3b, 5a and 5b showed superior antiproliferative activities to Taxol. Where, compound 3b showed IC50 values of 6.54, 15.54 and 6.13 μM compared to Taxol (6.68, 38.05, 12.32 μM) against Huh-7, A549 and MCF-7, respectively. Also, tubulin polymerization assay was carried out. The most potent compounds 3a, 3b, 5a and 5b could significantly inhibit tubulin polymerization with IC50 values of 15.6, 4.03, 6.06 and 12.61 μM, respectively. Compound 3b exhibited the highest tubulin polymerization inhibitory effect with an IC50 value of 4.03 μM compared to combretastatin (A-4) (1.64 μM). Molecular modeling studies of the designed compounds confirmed that most of the compounds made the essential binding interactions compared to the reference compound which assisted in the prediction of the structure requirements for the detected anticancer activity. Finally, in vivo studies showed that compound 3b could significantly inhibit breast cancer.
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Affiliation(s)
- Menna M Abdelshaheed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University in Egypt New Damietta Egypt
| | - Hussein I El Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University P.O. Box 35516 Mansoura Egypt
| | - Mohamed A Tantawy
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre Dokki Giza Egypt
- Stem Cells Lab, Center of Excellence for Advanced Sciences, National Research Centre Dokki Cairo Egypt
- Department of Orthopaedics and Rehabilitation, CORTS, Penn State University, College of Medicine 500 University Drive Hershey PA 17033-0850 USA
| | - Reem T Attia
- Department of Pharmacology and Toxicology and Biochemistry, Faculty of Pharmacy, Future University in Egypt 11835 Cairo Egypt
| | - Khairia M Youssef
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Future University in Egypt 11835 Cairo Egypt +201006064161
| | - Iten M Fawzy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Future University in Egypt 11835 Cairo Egypt +201006064161
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7
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Man RJ, Lu T, Zheng CC, Li T, Wu MK, Li DD, He XM. Discovery of pyrazole-carbohydrazide with indole moiety as tubulin polymerization inhibitors and anti-tumor candidates. Drug Dev Res 2023; 84:110-120. [PMID: 36433708 DOI: 10.1002/ddr.22016] [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: 10/17/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 11/27/2022]
Abstract
In this work, a series of indole-containing pyrazole-carbohydrazide derivatives A1-A25 were synthesized, and their biological activity on tubulin polymerization inhibition and mitotic catastrophe was evaluated. For introducing indole group to CA-4 pattern, the carbohydrazide linker was used for the first time. As the top hit, A18 suggested notable antiproliferation efficacy and tubulin polymerization inhibitory activity. Inferring comparable antitubulin effect with the positive control Colchicine, A18 indicated obviously lower cyto-toxicity. The cell scratch test showed that A18 could block the cell migration, while the confocal imaging depicted that A18 could induce the mitotic catastrophe via a Colchicine-like approach. The docking simulation visualized the probable binding pattern of A18. With the information in this work, some new hints on modification might be involved in further tubulin-related investigations.
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Affiliation(s)
- Ruo-Jun Man
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning, China
| | - Tian Lu
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning, China.,Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Chi-Chong Zheng
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning, China.,Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Tong Li
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning, China.,Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Meng-Ke Wu
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning, China.,Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Dong-Dong Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Xue-Mei He
- Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Fruits and Vegetables Storage-processing Technology, Nanning, China
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8
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Khachatryan H, Olszowy B, Barrero CA, Gordon J, Perez-Leal O. Identification of Inhibitors of Tubulin Polymerization Using a CRISPR-Edited Cell Line with Endogenous Fluorescent Tagging of β-Tubulin and Histone H1. Biomolecules 2023; 13:249. [PMID: 36830618 PMCID: PMC9953358 DOI: 10.3390/biom13020249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
Tubulin is a protein that plays a critical role in maintaining cellular structure and facilitating cell division. Inhibiting tubulin polymerization has been shown to be an effective strategy for inhibiting the proliferation of cancer cells. In the past, identifying compounds that could inhibit tubulin polymerization has required the use of in vitro assays utilizing purified tubulin or immunofluorescence of fixed cells. This study presents a novel approach for identifying tubulin polymerization inhibitors using a CRISPR-edited cell line that expresses fluorescently tagged β-tubulin and a nuclear protein, enabling the visualization of tubulin polymerization dynamics via high-content imaging analysis (HCI). The cells were treated with known tubulin polymerization inhibitors, colchicine, and vincristine, and the resulting phenotypic changes indicative of tubulin polymerization inhibition were confirmed using HCI. Furthermore, a library of 429 kinase inhibitors was screened, resulting in the identification of three compounds (ON-01910, HMN-214, and KX2-391) that inhibit tubulin polymerization. Live cell tracking analysis confirmed that compound treatment leads to rapid tubulin depolymerization. These findings suggest that CRISPR-edited cells with fluorescently tagged endogenous β-tubulin can be utilized to screen large compound libraries containing diverse chemical families for the identification of novel tubulin polymerization inhibitors.
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Affiliation(s)
| | | | | | | | - Oscar Perez-Leal
- Department of Pharmaceutical Sciences, Moulder Center for Drug Discovery, School of Pharmacy, Temple University, Philadelphia, PA 19140, USA
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9
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Dimitrova YN, Gutierrez JA, Huard K. It's ok to be outnumbered - sub-stoichiometric modulation of homomeric protein complexes. RSC Med Chem 2023; 14:22-46. [PMID: 36760737 PMCID: PMC9890894 DOI: 10.1039/d2md00212d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
An arsenal of molecular tools with increasingly diversified mechanisms of action is being developed by the scientific community to enable biological interrogation and pharmaceutical modulation of targets and pathways of ever increasing complexity. While most small molecules interact with the target of interest in a 1 : 1 relationship, a noteworthy number of recent examples were reported to bind in a sub-stoichiometric manner to a homomeric protein complex. This approach requires molecular understanding of the physiologically relevant protein assemblies and in-depth characterization of the compound's mechanism of action. The recent literature examples summarized here were selected to illustrate methods used to identify and characterize molecules with such mechanisms. The concept of one small molecule targeting a homomeric protein assembly is not new but the subject deserves renewed inspection in light of emerging technologies and increasingly diverse target biology, to ensure relevant in vitro systems are used and valuable compounds with potentially novel sub-stoichiometric mechanisms of action aren't overlooked.
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Affiliation(s)
| | | | - Kim Huard
- Genentech 1 DNA Way South San Francisco CA 94080 USA
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10
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Xanthatin and 8-epi-xanthatin as new potential colchicine binding site inhibitors: a computational study. J Mol Model 2023; 29:36. [PMID: 36627468 DOI: 10.1007/s00894-022-05428-w] [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: 08/17/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023]
Abstract
CONTEXT Phytocompounds xanthatin and 8-epi-xanthatin, obtained from Xanthium chinese Mill, showed antitumoral activity in vitro related to the microtubules destabilizing properties of these phytocompounds. Five binding sites for microtubule destabilizing agents have been characterized on tubulin by high-resolution X-ray crystallography: vinca domain, colchicine, pironetin, maytansine site, and more recently, the seventh site. This work aims to develop a comprehensive computational strategy to understand and eventually predict the interaction between xanthatin and 8-epi-xanthatin with the destabilizing-antimitotic binding domain of the tubulin heterodimer. In addition, we propose a putative binding site for these phytocompounds into the microtubule destabilizing binding sites on the tubulin heterodimer. Xanthanolides showed higher stability in the colchicine and pironetin binding sites, whit a greater affinity for the former. In addition, we found that xanthanolides and non-classical colchicine binding site inhibitors share a high structural similarity. METHODS The 3D structures for xanthatin and 8-epi-xanthatin were obtained using DFT with the hybrid functional B3LYP and the base 6-31G (d,p), implemented in Gaussian 09. The 3D coordinates for tubulin proteins were downloaded from PDB. The complexes tubulin-xanthanolides were predicted using a Monte-Carlo iterated search combined with the BFGS gradient-based optimizer implemented in the AutoDock Vina. The xanthanolides-tubulin complexes were energy minimized by molecular dynamics simulations at vacuum, and their stabilities were evaluated by solvated molecular dynamics simulations during 100 ns. All molecular dynamics simulations were performed using the conjugate gradient method implemented in NAMD2 and CHARMM36 forcefield.
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11
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Song J, Guan YF, Liu WB, Song CH, Tian XY, Zhu T, Fu XJ, Qi YQ, Zhang SY. Discovery of novel coumarin-indole derivatives as tubulin polymerization inhibitors with potent anti-gastric cancer activities. Eur J Med Chem 2022; 238:114467. [DOI: 10.1016/j.ejmech.2022.114467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/01/2022] [Accepted: 05/13/2022] [Indexed: 12/26/2022]
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12
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Tian C, Wang M, Shi X, Chen X, Wang X, Zhang Z, Liu J. Discovery of (2-(pyrrolidin-1-yl)thieno[3,2-d]pyrimidin-4-yl)(3,4,5-trimethoxyphenyl)methanone as a novel potent tubulin depolymerizing and vascular disrupting agent. Eur J Med Chem 2022; 238:114466. [DOI: 10.1016/j.ejmech.2022.114466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/03/2022] [Accepted: 05/12/2022] [Indexed: 11/15/2022]
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13
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Discovery of N-benzylarylamide derivatives as novel tubulin polymerization inhibitors capable of activating the Hippo pathway. Eur J Med Chem 2022; 240:114583. [PMID: 35834904 DOI: 10.1016/j.ejmech.2022.114583] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 01/12/2023]
Abstract
Novel N-benzylarylamide saderivatives were designed and synthesized, and their antiproliferative activities were explored. Some of 51 target compounds exhibited potent inhibitory activities against MGC-803, HCT-116 and KYSE450 cells with IC50 values in two-digit nanomolar. Compound I-33 (MY-875) displayed the most potent antiproliferative activities against MGC-803, HCT-116 and KYSE450 cells (IC50 = 0.027, 0.055 and 0.067 μM, respectively) and possessed IC50 values ranging from 0.025 to 0.094 μM against other 11 cancer cell lines. Further mechanism studies indicated that compound I-33 (MY-875) inhibited tubulin polymerization (IC50 = 0.92 μM) by targeting the colchicine bingding site of tubulin. Compound I-33 (MY-875) disrupted the construction of the microtubule networks and affected the mitosis in MGC-803 and SGC-7901 cells. In addition, although it acted as a colchicine binding site inhibitor, compound I-33 (MY-875) also activated the Hippo pathway to promote the phosphorylation status of MST and LATS, resulting in the YAP degradation in MGC-803 and SGC-7901 cells. Due to the degradation of YAP, the expression levels of TAZ and Axl decreased. Because of the dual actions on colchicine binding site and Hippo pathway, compound I-33 (MY-875) dose-dependently inhibited cell colony formatting ability, arrested cells at the G2/M phase and induced cells apoptosis in MGC-803 and SGC-7901 cells. Moreover, compound I-33 (MY-875) could regulate the levels of cell cycle and apoptosis regulatory proteins in MGC-803 and SGC-7901 cells. Furthermore, molecular docking analysis suggested that the hydrogen bond and hydrophobic interactions made compound I-33 (MY-875) well bind into the colchicine binding site of tubulin. Collectively, compound I-33 (MY-875) is a novel anti-gastric cancer agent and deserves to be further investigated for cancer therapy by targeting the colchicine binding site of tubulin and activating the Hippo pathway.
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A novel aromatic amide derivative SY-65 co-targeted tubulin and histone deacetylase 1 with potent anticancer activity in vitro and in vivo. Biochem Pharmacol 2022; 201:115070. [DOI: 10.1016/j.bcp.2022.115070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 12/27/2022]
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15
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Bukhari SNA. Synthesis and evaluation of new chalcones and oximes as anticancer agents. RSC Adv 2022; 12:10307-10320. [PMID: 35424971 PMCID: PMC8973297 DOI: 10.1039/d2ra01198k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/28/2022] [Indexed: 12/28/2022] Open
Abstract
Complex illnesses, such as cancer, are often caused by many disorders, gene mutations, or pathways. Biological pathways play a significant part in the development of these diseases. Multi-target directed ligands (MTDLs) have been used by medicinal chemists recently in an effort to find single molecules that can affect many targets concurrently. In this work, several chalcones containing the ligustrazine moiety were synthesized and tested for their in vitro anticancer activity and several cancer markers, including EGFR, BRAFV600E, c-Met, and tubulin polymerization, in order to uncover multitarget bioactive compounds. In assays using multiple cancer cell lines, the majority of the compounds examined showed strong anticancer activity against them. To synthesize oximes, all of the chalcones were used as precursors. The IC50 values of two compounds (11g and 11e) were found to be 0.87, 0.28, 2.43, 1.04 μM and 11d, 1.47, 0.79, 3.8, 1.63 μM respectively, against A-375, MCF-7, HT-29 and H-460 cell lines. These IC50 values revealed an excellent antiproliferative activity compared to those of the positive control foretinib, (IC50 = 1.9, 1.15, 3.97, and 2.86 μM). Careful examination of their structure and configuration revealed that both compounds had an oxime functional group with z configuration, in place of carbonyl functional group, along with a 2-phenyl thiophenyl moiety with or without a bromo group at position-5. The possible binding pattern was implied by docking simulation, inferring the possibility of introducing interactions with the nearby tubulin chain. Since the novel structural trial has been conducted with a detailed structure activity relationship discussion, this work might stimulate new ideas in further modification of multitarget anti-cancer agents and therapeutic approaches. Discovery of multitarget anticancer agents by modifications of natural compound.![]()
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Affiliation(s)
- Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University Sakaka Aljouf 72388 Saudi Arabia +96 6565738896
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Kober L, Schleser SW, Bär SI, Schobert R. Revisiting the anticancer properties of phosphane(9-ribosylpurine-6-thiolato)gold(I) complexes and their 9H-purine precursors. J Biol Inorg Chem 2022; 27:731-745. [PMID: 36244017 PMCID: PMC9653339 DOI: 10.1007/s00775-022-01968-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/27/2022] [Indexed: 01/05/2023]
Abstract
New mono- and di-nuclear thio-purine and thio-purine nucleoside gold(I) complexes were synthesized, characterized, and evaluated in vitro for biological activities in comparison to related known purine complexes. By combining known anti-tumoral thio-purines with R3PAu moieties as present in auranofin, complexes with enhanced effects and selectivities were obtained, which not only act as cytostatics, but also disrupt tumor-specific processes. Their IC50 values in cytotoxicity test with tumor cell lines ranged from three-digit nanomolar to single-digit micromolar, revealing a tentative structure-activity relationship (SAR). Both the residues R2 of the phosphane ligand and R1 at C2 of the pyrimidine ring had a significant impact on the cytotoxicity. In most cases, the introduction of a ribo-furanosyl group at N9 of the purine led to a distinctly more cytotoxic complex. Most complexes were more active against multi-drug-resistant tumor cells or such lacking functional p53 when compared to the respective untreated wild type cell lines. Some nucleoside complexes displayed an interesting dose-dependent dual mode of action regarding cell cycle arrest and DNA repair mechanism. Some phosphane(purine-6-thiolato)gold (I) complexes had a stronger inhibitory effect on the thioredoxin reductase (TrxR) and on the reactive oxygen species (ROS) generation in cancer cells than is typical of other gold complexes. They also led to DNA fragmentation and showed anti-angiogenic effects. Their stability under test conditions was demonstrated by 77Se NMR monitoring of an exemplary selenopurine complex.
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Affiliation(s)
- Luisa Kober
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany
| | - Sebastian W Schleser
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany
| | - Sofia I Bär
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany.
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Malebari AM, Wang S, Greene TF, O’Boyle NM, Fayne D, Khan MF, Nathwani SM, Twamley B, McCabe T, Zisterer DM, Meegan MJ. Synthesis and Antiproliferative Evaluation of 3-Chloroazetidin-2-ones with Antimitotic Activity: Heterocyclic Bridged Analogues of Combretastatin A-4. Pharmaceuticals (Basel) 2021; 14:1119. [PMID: 34832901 PMCID: PMC8624998 DOI: 10.3390/ph14111119] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/29/2022] Open
Abstract
Antimitotic drugs that target tubulin are among the most widely used chemotherapeutic agents; however, the development of multidrug resistance has limited their clinical activity. We report the synthesis and biological properties of a series of novel 3-chloro-β-lactams and 3,3-dichloro-β-lactams (2-azetidinones) that are structurally related to the tubulin polymerisation inhibitor and vascular targeting agent, Combretastatin A-4. These compounds were evaluated as potential tubulin polymerisation inhibitors and for their antiproliferative effects in breast cancer cells. A number of the compounds showed potent activity in MCF-7 breast cancer cells, e.g., compound 10n (3-chloro-4-(3-hydroxy-4-methoxy-phenyl)-1-(3,4,5-trimethoxyphenyl)azetidin-2-one) and compound 11n (3,3-dichloro-4-(3-hydroxy-4-methoxyphenyl)-1-(3,4,5-trimethoxyphenyl)-azetidin-2-one), with IC50 values of 17 and 31 nM, respectively, and displayed comparable cellular effects to those of Combretastatin A-4. Compound 10n demonstrated minimal cytotoxicity against non-tumorigenic HEK-293T cells and inhibited the in vitro polymerisation of tubulin with significant G2/M phase cell cycle arrest. Immunofluorescence staining of MCF-7 cells confirmed that β-lactam 10n caused a mitotic catastrophe by targeting tubulin. In addition, compound 10n promoted apoptosis by regulating the expression of pro-apoptotic protein BAX and anti-apoptotic proteins Bcl-2 and Mcl-1. Molecular docking was used to explore the potential molecular interactions between novel 3-chloro-β-lactams and the amino acid residues of the colchicine binding active site cavity of β-tubulin. Collectively, these results suggest that 3-chloro-2-azetidinones, such as compound 10n, could be promising lead compounds for further clinical anti-cancer drug development.
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Affiliation(s)
- Azizah M. Malebari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Shu Wang
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.W.); (T.F.G.); (N.M.O.)
| | - Thomas F. Greene
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.W.); (T.F.G.); (N.M.O.)
| | - Niamh M. O’Boyle
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.W.); (T.F.G.); (N.M.O.)
| | - Darren Fayne
- Molecular Design Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (D.F.); (M.F.K.)
| | - Mohemmed Faraz Khan
- Molecular Design Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (D.F.); (M.F.K.)
| | - Seema M. Nathwani
- School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.M.N.); (D.M.Z.)
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin, 2 DO2R590 Dublin, Ireland; (B.T.); (T.M.)
| | - Thomas McCabe
- School of Chemistry, Trinity College Dublin, 2 DO2R590 Dublin, Ireland; (B.T.); (T.M.)
| | - Daniela M. Zisterer
- School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.M.N.); (D.M.Z.)
| | - Mary J. Meegan
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, DO2R590 Dublin, Ireland; (S.W.); (T.F.G.); (N.M.O.)
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Lindberg A, Mossine AV, Aliaga A, Hopewell R, Massarweh G, Rosa-Neto P, Shao X, Bernard-Gauthier V, Scott PJH, Vasdev N. Preliminary Evaluations of [ 11C]Verubulin: Implications for Microtubule Imaging With PET. Front Neurosci 2021; 15:725873. [PMID: 34566568 PMCID: PMC8456034 DOI: 10.3389/fnins.2021.725873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/16/2021] [Indexed: 01/08/2023] Open
Abstract
[11C]Verubulin (a.k.a.[11C]MCP-6827), [11C]HD-800 and [11C]colchicine have been developed for imaging microtubules (MTs) with positron emission tomography (PET). The objective of this work was to conduct an in vivo comparison of [11C]verubulin for MT imaging in mouse and rat brain, as well as an in vitro study with this radiotracer in rodent and human Alzheimer’s Disease tissue. Our preliminary PET imaging studies of [11C]verubulin in rodents revealed contradictory results between mouse and rat brain uptake under pretreatment conditions. In vitro autoradiography with [11C]verubulin showed an unexpected higher uptake in AD patient tissue compared with healthy controls. We also conducted the first comparative in vivo PET imaging study with [11C]verubulin, [11C]HD-800 and [11C]colchicine in a non-human primate. [11C]Verubulin and [11C]HD-800 require pharmacokinetic modeling and quantification studies to understand the role of how these radiotracers bind to MTs before translation to human use.
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Affiliation(s)
- Anton Lindberg
- Azrieli Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Andrew V Mossine
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, MI, United States
| | - Arturo Aliaga
- Translational Neuroimaging Laboratory, McGill Centre for Studies in Aging, Douglas Mental Health University Institute, Montreal, QC, Canada
| | - Robert Hopewell
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Gassan Massarweh
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Pedro Rosa-Neto
- Translational Neuroimaging Laboratory, McGill Centre for Studies in Aging, Douglas Mental Health University Institute, Montreal, QC, Canada
| | - Xia Shao
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, MI, United States
| | - Vadim Bernard-Gauthier
- Azrieli Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Peter J H Scott
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, MI, United States
| | - Neil Vasdev
- Azrieli Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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Discovery of Novel Diarylamide N-Containing Heterocyclic Derivatives as New Tubulin Polymerization Inhibitors with Anti-Cancer Activity. Molecules 2021; 26:molecules26134047. [PMID: 34279387 PMCID: PMC8272053 DOI: 10.3390/molecules26134047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 01/11/2023] Open
Abstract
Tubulin has been regarded as an attractive and successful molecular target in cancer therapy and drug discovery. Vicinal diaryl is a simple scaffold found in many colchicine site tubulin inhibitors, which is also an important pharmacophoric point of tubulin binding and anti-cancer activity. As the continuation of our research work on colchicine binding site tubulin inhibitors, we designed and synthesized a series of diarylamide N-containing heterocyclic derivatives by the combination of vicinal diaryl core and N-containing heterocyclic skeletons into one hybrid though proper linkers. Among of these compounds, compound 15b containing a 5-methoxyindole group exhibited the most potent inhibitory activity against the tested three human cancer cell lines (MGC-803, PC-3 and EC-109) with IC50 values of 1.56 μM, 3.56 μM and 14.5 μM, respectively. Besides, the SARs of these compounds were preliminarily studied and summarized. The most active compound 15b produced the inhibition of tubulin polymerization in a dose-dependent manner and caused microtubule network disruption in MGC-803 cells. Therefore, compound 15b was identified as a novel tubulin polymerization inhibitor targeting the colchicine binding site. In addition, the results of molecular docking also suggested compound 15b could tightly bind into the colchicine binding site of β-tubulin.
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Yang B, Zhou J, Wang F, Hu XW, Shi Y. Pyrazoline derivatives as tubulin polymerization inhibitors with one hit for Vascular Endothelial Growth Factor Receptor 2 inhibition. Bioorg Chem 2021; 114:105134. [PMID: 34246970 DOI: 10.1016/j.bioorg.2021.105134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/06/2021] [Accepted: 06/26/2021] [Indexed: 02/07/2023]
Abstract
In this work, to check the effect of the transposition of the rings in typical patterns, a series of pyrazoline derivatives 3a-3t bearing the characteristic 3,4,5-trimethoxy phenyl and thiophene moieties were synthesized and evaluated as tubulin polymerization inhibitors. Basically, as the concise output of our design, a majority of the synthesized compounds showed potency in inhibiting the tubulin polymerization. The top hit, 3q, exhibited potent anti-proliferation activity on cancer cell lines. It was comparable on tubulin-polymerization inhibition with the positive control Colchicine but lower toxic. The VEGFR2 inhibitory potency was introduced occasionally. The flow cytometry assay confirmed the apoptotic procedure and the confocal imaging revealed the tubulin-microtubule dynamics pattern. The anti-cancer mechanism of 3q was similar to Colchicine but not exactly the same on forming multi-polar spindles. The docking simulation visualized the possible binding patterns of 3q into tubulin and VEGFR2, respectively. The results inferred that further investigations on the transposition of the rings might lead to the improvement of tubulin polymerization inhibitory activity and the steadily introduction of the VEGFR2 inhibition.
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Affiliation(s)
- Bing Yang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China.
| | - Jiahua Zhou
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Fa Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Xiao-Wei Hu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, Shandong 276005, China
| | - Yujun Shi
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China.
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