1
|
Liu Y, Li C, Li Y, Zhang S, Zhang N, Bian X, Tan S. Ligand-based pharmacophore modelling, structure optimisation, and biological evaluation for the identification of 2-heteroarylthio- N-arylacetamides as novel HSP90 C-terminal inhibitors. J Enzyme Inhib Med Chem 2024; 39:2290912. [PMID: 38083866 DOI: 10.1080/14756366.2023.2290912] [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: 09/12/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Targeting Heat shock protein 90 (HSP90) C-terminus is an important strategy to develop HSP90 inhibitors without inducing heat shock response. The development of C-terminal inhibitors, however, is hampered by a lack of understanding regarding the interaction between the HSP90 C-terminus and the present inhibitors. We collected seven classical and structurally diverse HSP90 C-terminal inhibitors and constructed a ligand-based pharmacophore model. The subsequent virtual screening and structural optimisation led to the identification of 2-heteroarylthio-N-arylacetamides as novel HSP90 C-terminal inhibitors. 9 and 27 exhibited strong antitumour activity in vitro by inhibiting proliferation and inducing apoptosis in multiple cancer cell lines. These compounds disrupted the interaction between HSP90 C-terminus and peptidylprolyl isomerase D, exerting a stronger inhibitory effect than novobiocin. 27 significantly induced the degradation of HSP90 clients without triggering heat shock response. In an in vivo study using 4T1 mice breast cancer models, 9 showed a potent antitumour effect without obvious toxicity.
Collapse
Affiliation(s)
- Yajun Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Chenyao Li
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Yajing Li
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Shuming Zhang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Ning Zhang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Xiaobo Bian
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shutao Tan
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| |
Collapse
|
2
|
Nandhini S, Ranjani M, Thiruppathi G, Jaithanya YM, Kalaiarasi G, Ravi M, Prabusankar G, Malecki JG, Sundararaj P, Prabhakaran R. Organoruthenium metallocycle induced mutation in gld-1 tumor suppression gene in JK1466 strain and appreciable lifespan expansion. J Inorg Biochem 2024; 257:112593. [PMID: 38754275 DOI: 10.1016/j.jinorgbio.2024.112593] [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: 03/01/2024] [Revised: 05/02/2024] [Accepted: 05/04/2024] [Indexed: 05/18/2024]
Abstract
Four Ru(II) complexes (A2-A5) were synthesized from the reaction of coumarin Schiff base ligands (7da2-tsc, 7da3-mtsc, 7da4-etsc and 7da5-ptsc) with [RuHCl(CO)(PPh3)3]. The compounds were characterized by FT-IR, UV-Vis, 1H, 13C and 31P NMR, mass spectrometry and crystallographic analysis. Calf Thymus DNA (CT-DNA) binding studies revealed the intercalative mode of binding of the complexes with DNA. The results of Bovine serum albumin (BSA) binding studies established the interaction between BSA followed static quenching mechanism. The cytotoxic effects of the complexes and the ligands were evaluated against breast (MCF-7 and MDA-MB-231) and lung carcinoma cell lines (A549 and NCI-H460) using MTT assay. Complex A4 demonstrated potent cytotoxic effects on both breast and lung cancer cells. Furthermore, morphological observations and FACS analysis showed the decrease in cell density by complex A4 by induced morphological changes and apoptotic body formation and cell death in both breast and lung cancer cells. Moreover, the invertebrate model Caenorhabditis elegans was employed to assess the in vivo anticancer activity of compound A4. The findings indicated that the treatment with A4 reduced tumor development and significantly extended organismal lifespan by 64 % in the tumoral strain JK1466 without adversely affecting essential physiological functions of the worm. Additionally, A4 demonstrated an upregulation of two crucial antioxidant defense genes. Overall, these results suggested that the compound A4 can be a potential candidate with novel chemotherapeutic applications.
Collapse
Affiliation(s)
- S Nandhini
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India
| | - M Ranjani
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India
| | - G Thiruppathi
- Department of Zoology, Bharathiar University, Coimbatore 641 046, India
| | - Y M Jaithanya
- Department of Biochemistry, University of Madras, Guindy Campus, Chennai 600025, India
| | - G Kalaiarasi
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India
| | - M Ravi
- Department of Biochemistry, University of Madras, Guindy Campus, Chennai 600025, India.
| | - G Prabusankar
- Department of Chemistry, Indian Institute of Technology, Hyderabad 502285, India
| | - J G Malecki
- Department of Crystallography, Silesia University, Szkolna 9, 40-006 Katowice, Poland
| | - P Sundararaj
- Department of Zoology, Bharathiar University, Coimbatore 641 046, India
| | - R Prabhakaran
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India.
| |
Collapse
|
3
|
Liu J, Shu H, Xia Q, You Q, Wang L. Recent developments of HSP90 inhibitors: an updated patent review (2020-present). Expert Opin Ther Pat 2024; 34:1-15. [PMID: 38441084 DOI: 10.1080/13543776.2024.2327295] [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: 11/10/2023] [Accepted: 03/01/2024] [Indexed: 03/09/2024]
Abstract
INTRODUCTION The 90-kDa heat shock protein (HSP90) functions as a molecular chaperone, it assumes a significant role in diseases such as cancer, inflammation, neurodegeneration, and infection. Therefore, the research and development of HSP90 inhibitors have garnered considerable attention. AREAS COVERED The primary references source for this review is patents obtained from SciFinder, encompassing patents on HSP90 inhibitors from the period of 2020 to 2023.This review includes a thorough analysis of their structural attributes, pharmacological properties, and potential clinical utilities. EXPERT OPINION In the past few years, HSP90 inhibitors targeting ATP binding pocket are still predominate and one of them has been launched, besides, novel drug design strategies like C-terminal targeting, isoform selective inhibiting and bifunctional molecules are booming, aiming to improve the efficacy and safety. With expanded drug types and applications, HSP90 inhibitors may gradually becoming a sagacious option for treating various diseases.
Collapse
Affiliation(s)
- Jianfeng Liu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Huangliang Shu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Qinxin Xia
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Qidong You
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Lei Wang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, China
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| |
Collapse
|
4
|
Peng S, Matts R, Deng J. Structural basis of the key residue W320 responsible for Hsp90 conformational change. J Biomol Struct Dyn 2023; 41:9745-9755. [PMID: 36373326 PMCID: PMC10183053 DOI: 10.1080/07391102.2022.2146197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 11/06/2022] [Indexed: 11/16/2022]
Abstract
The 90-kDa heat shock protein (Hsp90) is a homodimeric molecular chaperone with ATPase activity, which has become an intensely studied target for the development of drugs for the treatment of cancer, neurodegenerative and infectious diseases. The equilibrium between Hsp90 dimers and oligomers is important for modulating its function. In the absence of ATP, the passive chaperone activity of Hsp90 dimers and oligomers has been shown to stabilize client proteins as a holdase, which enhances substrate binding and prevents irreversible aggregation and precipitation of the substrate proteins. In the presence of ATP and its associated cochaperones, Hsp90 homodimers act as foldases with the binding and hydrolysis of ATP driving conformational changes that mediate client folding. Crystal structures of both wild type and W320A mutant Hsp90αMC (middle/C-terminal domain) have been determined, which displayed a preference for hexameric and dimeric states, respectively. Structural analysis showed that W320 is a key residue for Hsp90 oligomerization by forming intermolecular interactions at the Hsp90 hexameric interface through cation-π interactions with R367. W320A substitution results in the formation of a more open conformation of Hsp90, which has not previously been reported, and the induction of a conformational change in the catalytic loop. The structures provide new insights into the mechanism by which W320 functions as a key switch for conformational changes in Hsp90 self-oligomerization, and binding cochaperones and client proteins.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Shuxia Peng
- Department of Biochemistry and Molecular biology, Oklahoma State University, 246 Noble Research Center, Stillwater, OK 74078, USA
| | - Robert Matts
- Department of Biochemistry and Molecular biology, Oklahoma State University, 246 Noble Research Center, Stillwater, OK 74078, USA
| | - Junpeng Deng
- Department of Biochemistry and Molecular biology, Oklahoma State University, 246 Noble Research Center, Stillwater, OK 74078, USA
| |
Collapse
|
5
|
Chiosis G, Digwal CS, Trepel JB, Neckers L. Structural and functional complexity of HSP90 in cellular homeostasis and disease. Nat Rev Mol Cell Biol 2023; 24:797-815. [PMID: 37524848 PMCID: PMC10592246 DOI: 10.1038/s41580-023-00640-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2023] [Indexed: 08/02/2023]
Abstract
Heat shock protein 90 (HSP90) is a chaperone with vital roles in regulating proteostasis, long recognized for its function in protein folding and maturation. A view is emerging that identifies HSP90 not as one protein that is structurally and functionally homogeneous but, rather, as a protein that is shaped by its environment. In this Review, we discuss evidence of multiple structural forms of HSP90 in health and disease, including homo-oligomers and hetero-oligomers, also termed epichaperomes, and examine the impact of stress, post-translational modifications and co-chaperones on their formation. We describe how these variations influence context-dependent functions of HSP90 as well as its interaction with other chaperones, co-chaperones and proteins, and how this structural complexity of HSP90 impacts and is impacted by its interaction with small molecule modulators. We close by discussing recent developments regarding the use of HSP90 inhibitors in cancer and how our new appreciation of the structural and functional heterogeneity of HSP90 invites a re-evaluation of how we discover and implement HSP90 therapeutics for disease treatment.
Collapse
Affiliation(s)
- Gabriela Chiosis
- Chemical Biology Program, Memorial Sloan Kettering Institute, New York, NY, USA.
- Department of Medicine, Memorial Sloan Kettering Institute, New York, NY, USA.
| | - Chander S Digwal
- Chemical Biology Program, Memorial Sloan Kettering Institute, New York, NY, USA
| | - Jane B Trepel
- Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Len Neckers
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.
| |
Collapse
|
6
|
Sukumaran S, Tan M, Ben-Uliel SF, Zhang H, De Zotti M, Chua MS, So SK, Qvit N. Rational design, synthesis and structural characterization of peptides and peptidomimetics to target Hsp90/Cdc37 interaction for treating hepatocellular carcinoma. Comput Struct Biotechnol J 2023; 21:3159-3172. [PMID: 37304004 PMCID: PMC10250827 DOI: 10.1016/j.csbj.2023.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/13/2023] Open
Abstract
Heat shock protein 90 (Hsp90) and cell division cycle 37 (Cdc37) work together as a molecular chaperone complex to regulate the activity of a multitude of client protein kinases. These kinases belong to a wide array of intracellular signaling networks that mediate multiple cellular processes including proliferation. As a result, Hsp90 and Cdc37 represent innovative therapeutic targets in various cancers (such as leukemia, multiple myeloma, and hepatocellular carcinoma (HCC)) in which their expression levels are elevated. Conventional small molecule Hsp90 inhibitors act by blocking the conserved adenosine triphosphate (ATP) binding site. However, by targeting less conserved sites in a more specific manner, peptides and peptidomimetics (modified peptides) hold potential as more efficacious and less toxic alternatives to the conventional small molecule inhibitors. Using a rational approach, we herein developed bioactive peptides targeting Hsp90/Cdc37 interaction. A six amino acid linear peptide derived from Cdc37, KTGDEK, was designed to target Hsp90. We used in silico computational docking to first define its mode of interaction, and binding orientation, and then conjugated the peptide with a cell penetrating peptide, TAT, and a fluorescent dye to confirm its ability to colocalize with Hsp90 in HCC cells. Based on the parent linear sequence, we developed a peptidomimetics library of pre-cyclic and cyclic derivatives. These peptidomimetics were evaluated for their binding affinity to Hsp90, and bioactivity in HCC cell lines. Among them, a pre-cyclic peptidomimetic demonstrates high binding affinity and bioactivity in HCC cells, causing reduced cell proliferation that is associated with induction of cell apoptosis, and down-regulation of phosphorylated MEK1/2. Overall, this generalized approach of rational design, structural optimization, and cellular validation of 'drug-like' peptidomimetics against Hsp90/Cdc37 offers a feasible and promising way to design novel therapeutic agents for malignancies and other diseases that are dependent on this molecular chaperone complex.
Collapse
Affiliation(s)
- Surya Sukumaran
- The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Henrietta Szold St. 8, Safed 1311502, Israel
| | - Mingdian Tan
- Asian Liver Center, Department of Surgery, Stanford University School of Medicine, 1201 Welch Road, Palo Alto, CA 94305, USA
| | - Shulamit Fluss Ben-Uliel
- The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Henrietta Szold St. 8, Safed 1311502, Israel
| | - Hui Zhang
- Asian Liver Center, Department of Surgery, Stanford University School of Medicine, 1201 Welch Road, Palo Alto, CA 94305, USA
| | - Marta De Zotti
- Department of Chemistry, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Mei-Sze Chua
- Asian Liver Center, Department of Surgery, Stanford University School of Medicine, 1201 Welch Road, Palo Alto, CA 94305, USA
| | - Samuel K. So
- Asian Liver Center, Department of Surgery, Stanford University School of Medicine, 1201 Welch Road, Palo Alto, CA 94305, USA
| | - Nir Qvit
- The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Henrietta Szold St. 8, Safed 1311502, Israel
| |
Collapse
|
7
|
Dernovšek J, Tomašič T. Following the design path of isoform-selective Hsp90 inhibitors: Small differences, great opportunities. Pharmacol Ther 2023; 245:108396. [PMID: 37001734 DOI: 10.1016/j.pharmthera.2023.108396] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/03/2023] [Accepted: 03/27/2023] [Indexed: 03/30/2023]
Abstract
The heat shock protein 90 (Hsp90) family consists of four highly conserved isoforms: the mitochondrial TRAP-1, the endoplasmic reticulum-localised Grp94, and the cytoplasmic Hsp90α and Hsp90β. Since the late 1990s, this family has been extensively studied as a potential target for the treatment of cancer, neurological disorders, and infectious diseases. The initial approach was to develop non-selective, so-called pan-Hsp90 ATP-competitive inhibitors of the N-terminal domain. Many of these agents were tested in clinical trials, mainly for the treatment of cancer, but none of them succeeded in the clinic. This was mainly due to the lack of efficacy and various toxicities associated with the induction of heat shock response (HSR). This lack of success has prompted a turn to new approaches of Hsp90 inhibition. Thus, inhibitors selective for a particular isoform of Hsp90 have been developed. These isoform-selective inhibitors do not induce HSR and have a more targeted effect because not all client proteins are equally dependent on all four paralogues of Hsp90. However, it is extremely difficult to develop such selective compounds because the family is highly conserved. Hsp90α and Hsp90β have an amazing 95% identity of the N-terminal ATP binding site, differing only in two amino acid residues. Therefore, the focus of this review is to fully elucidate the key structural features of the selective inhibitor classes in terms of binding site dissimilarities. In addition to a methodological characterisation of the structure-activity relationships, the main advantages of selective inhibition of the TRAP-1, Grp94, Hsp90α and Hsp90β isoforms are discussed.
Collapse
Affiliation(s)
- Jaka Dernovšek
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia
| | - Tihomir Tomašič
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia.
| |
Collapse
|
8
|
Shen C, Zhu X, Xu X, Chang H, Ni Y, Li C, He K, Chen L, Chen L, Hou M, Ji M, Xu Z. Identification and Characterization of Antigenic Properties of Schistosoma japonicum Heat Shock Protein 90α Derived Peptides. Pathogens 2022; 11:pathogens11111238. [PMID: 36364989 PMCID: PMC9696693 DOI: 10.3390/pathogens11111238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 11/29/2022] Open
Abstract
It is known that schistosome-derived antigens induce innate and adaptive immune responses that are essential for the formation of hepatic immunopathology. Here, we screened and synthesized four peptides derived from Schistosoma japonicum (S. japonicum) heat shock protein 90α (Sjp90α-1, -2, -3, and -4), which is widely expressed in adults and eggs of the genus S. japonicum and induces remarkable immune reactions. To define the antigenicity of these peptides, we stimulated splenocytes with peptides, and the results showed that only the Sjp90α-1 peptide could predominately induce the activation of dendritic cells (DCs) and macrophages as well as alter the proportion of follicular helper T (Tfh) cells. Next, CD4+ T cells were purified and cocultured with mouse bone-marrow-derived DCs (BMDCs) with or without Sjp90α-1 peptide stimulation in vitro, and the results showed that Sjp90α-1-stimulated BMDCs can significantly induce CD4+ T-cell differentiation into Tfh cells, while the direct stimulation of CD4+ T cells with Sjp90α-1 did not induce Tfh cells, indicating that the Sjp90α-1 peptide promotes Tfh cell differentiation depending on the presence of DCs. Furthermore, we selected and prepared an Sjp90α-1-peptide-based antibody and illustrated that it has excellent reactivity with the immunizing peptide and detects a single band of 29 kDa corresponding to the Sjp90α protein. The immunolocalization results showed that the protein recognized by this Sjp90α-1-peptide-based antibody is present in the mature eggs and the tegument of adults, implying that the parasite-derived peptide has a potential interaction with the host immune system. Finally, we evaluated antipeptide IgG antibodies and revealed a significantly higher level of anti-Sjp90α-1 peptide IgG antibodies in mice 3 weeks after S. japonicum infection. In conclusion, we illustrate that these synthetic peptides warrant further investigation by evaluating their antigen-specific immune response and their ability to efficiently induce Tfh cells. Moreover, they may constitute a potentially helpful method for the laboratory diagnosis of schistosomiasis japonica.
Collapse
Affiliation(s)
- Chunxiang Shen
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Xinyi Zhu
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Xuejun Xu
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Hao Chang
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Yangyue Ni
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Chen Li
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Kaiyue He
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Lin Chen
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Lu Chen
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Min Hou
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
- State Key Laboratory of Reproductive Medicine, Nanjing 211166, China
| | - Minjun Ji
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
- State Key Laboratory of Reproductive Medicine, Nanjing 211166, China
- NHC Key Laboratory of Antibody Technique, Nanjing Medical University, Nanjing 211166, China
- Correspondence: (Z.X.); (M.J.)
| | - Zhipeng Xu
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
- State Key Laboratory of Reproductive Medicine, Nanjing 211166, China
- NHC Key Laboratory of Antibody Technique, Nanjing Medical University, Nanjing 211166, China
- Correspondence: (Z.X.); (M.J.)
| |
Collapse
|
9
|
Topkan F, Özdemir M, Özkan BN, Bozali K, Güler EM, Zorlu Y, Bulut M, Görgülü AO, Yalçın B. Hydrogen-bond-driven supramolecular helical assembly of a coumarin-substituted phthalonitrile derivative: synthesis and in vitro anticancer activity against colorectal adenocarcinoma. Acta Crystallogr D Struct Biol 2022; 78:1143-1155. [DOI: 10.1107/s2059798322007823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
Phthalonitrile derivatives are generally reported to crystallize in space groups P21/c and P
1 in the literature. In this study, 7-hydroxy-4,8-dimethyl-3-pentylcoumarin (2) and its phthalonitrile derivative (2d) were crystallized; 2d crystallized in the rare trigonal space group R
3. In the phthalonitrile derivative (2d), weak C—H...O hydrogen-bonding interactions promoted the formation of supramolecular double helices, and these supramolecular P and M double helices came together to form a honeycomb-like architectural motif involving one-dimensional tubular channels. In silico molecular-docking studies were performed to support the experimental processes and the results agree with each other. In vitro studies of compounds 2 and 2d were performed in LoVo colorectal adenocarcinoma and CCD18Co healthy human cell lines using flow cytometry. For compounds 2 and 2d, there was a statistically significant increase (p < 0.001) in both early and late apoptosis with respect to the control in a dose-dependent manner.
Collapse
|
10
|
Pan- and isoform-specific inhibition of Hsp90: Design strategy and recent advances. Eur J Med Chem 2022; 238:114516. [DOI: 10.1016/j.ejmech.2022.114516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 12/11/2022]
|