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Hwang SY, Park S, Jo H, Hee Seo S, Jeon KH, Kim S, Jung AR, Song C, Ahn M, Yeon Kwak S, Lee HJ, Uesugi M, Na Y, Kwon Y. Interrupting specific hydrogen bonds between ELF3 and MED23 as an alternative drug resistance-free strategy for HER2-overexpressing cancers. J Adv Res 2022; 47:173-187. [PMID: 35963541 PMCID: PMC10173165 DOI: 10.1016/j.jare.2022.08.003] [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: 12/11/2021] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION HER2 overexpression induces cancer aggression and frequent recurrences in many solid tumors. Because HER2 overproduction is generally followed by gene amplification, inhibition of protein-protein interaction (PPI) between transcriptional factor ELF3 and its coactivator MED23 has been considered an effective but challenging strategy. OBJECTIVES This study aimed to determine the hotspot of ELF3-MED23 PPI and further specify the essential residues and their key interactions in the hotspot which are controllable by small molecules with significant anticancer activity. METHODS Intensive biological evaluation methods including SEAP, fluorescence polarization, LC-MS/MS-based quantitative, biosensor, GST-pull down assays, and in silico structural analysis were performed to determine hotspot of ELF3-MED23 PPI and to elicit YK1, a novel small molecule PPI inhibitor. The effects of YK1 on possible PPIs of MED23 and the efficacy of trastuzumab were assessed using cell culture and tumor xenograft mouse models. RESULTS ELF3-MED23 PPI was found to be specifically dependent on H-bondings between D400, H449 of MED23 and W138, I140 of ELF3 for upregulating HER2 gene transcription. Employing YK1, we confirmed that interruption on these H-bondings significantly attenuated the HER2-mediated oncogenic signaling cascades and exhibited significant in vitro and in vivo anticancer activity against HER2-overexpressing breast and gastric cancers even in their trastuzumab refractory clones. CONCLUSION Our approach to develop specific ELF3-MED23 PPI inhibitor without interfering other PPIs of MED23 can finally lead to successful development of a drug resistance-free compound to interrogate HER2 biology in diverse conditions of cancers overexpressing HER2.
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Affiliation(s)
- Soo-Yeon Hwang
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Seojeong Park
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Hyunji Jo
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Seung Hee Seo
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Kyung-Hwa Jeon
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Seojeong Kim
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Ah-Reum Jung
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Chanju Song
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Misun Ahn
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Soo Yeon Kwak
- College of Pharmacy, CHA University, Pocheon 11160, Korea
| | - Hwa-Jong Lee
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Motonari Uesugi
- Institute for Chemical Research and Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Younghwa Na
- College of Pharmacy, CHA University, Pocheon 11160, Korea.
| | - Youngjoo Kwon
- College of Pharmacy & Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea.
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Dhiwar PS, Matada GSP, Raghavendra NM, Ghara A, Singh E, Abbas N, Andhale GS, Shenoy GP, Sasmal P. Current updates on EGFR and HER2 tyrosine kinase inhibitors for the breast cancer. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02934-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Westerlund K, Myrhammar A, Tano H, Gestin M, Karlström AE. Stability Enhancement of a Dimeric HER2-Specific Affibody Molecule through Sortase A-Catalyzed Head-to-Tail Cyclization. Molecules 2021; 26:2874. [PMID: 34066245 PMCID: PMC8150554 DOI: 10.3390/molecules26102874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 11/16/2022] Open
Abstract
Natural backbone-cyclized proteins have an increased thermostability and resistance towards proteases, characteristics that have sparked interest in head-to-tail cyclization as a method to stability-enhance proteins used in diagnostics and therapeutic applications, for example. In this proof-of principle study, we have produced and investigated a head-to-tail cyclized and HER2-specific ZHER2:342 Affibody dimer. The sortase A-mediated cyclization reaction is highly efficient (>95%) under optimized conditions, and renders a cyclic ZHER3:342-dimer with an apparent melting temperature, Tm, of 68 °C, which is 3 °C higher than that of its linear counterpart. Circular dichroism spectra of the linear and cyclic dimers looked very similar in the far-UV range, both before and after thermal unfolding to 90 °C, which suggests that cyclization does not negatively impact the helicity or folding of the cyclic protein. The cyclic dimer had an apparent sub-nanomolar affinity (Kd ~750 pM) to the HER2-receptor, which is a ~150-fold reduction in affinity relative to the linear dimer (Kd ~5 pM), but the anti-HER2 Affibody dimer remained a high-affinity binder even after cyclization. No apparent difference in proteolytic stability was detected in an endopeptidase degradation assay for the cyclic and linear dimers. In contrast, in an exopeptidase degradation assay, the linear dimer was shown to be completely degraded after 5 min, while the cyclic dimer showed no detectable degradation even after 60 min. We further demonstrate that a site-specifically DyLight 594-labeled cyclic dimer shows specific binding to HER2-overexpressing cells. Taken together, the results presented here demonstrate that head-to-tail cyclization can be an effective strategy to increase the stability of an Affibody dimer.
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Affiliation(s)
| | | | | | | | - Amelie Eriksson Karlström
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Center, SE-10691 Stockholm, Sweden; (K.W.); (A.M.); (H.T.); (M.G.)
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Longatti A, Schindler C, Collinson A, Jenkinson L, Matthews C, Fitzpatrick L, Blundy M, Minter R, Vaughan T, Shaw M, Tigue N. High affinity single-chain variable fragments are specific and versatile targeting motifs for extracellular vesicles. NANOSCALE 2018; 10:14230-14244. [PMID: 30010165 DOI: 10.1039/c8nr03970d] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Exosomes are extracellular vesicles that mediate cell-to-cell communication by transferring biological cargo, such as DNA, RNA and proteins. Through genetic engineering of exosome-producing cells or manipulation of purified exosomes, it is possible to load exosomes with therapeutic molecules and target them to specific cells via the display of targeting moieties on their surface. This provides an opportunity to exploit a naturally-occurring biological process for therapeutic purposes. In this study, we explored the potential of single chain variable fragments (scFv) as targeting domains to achieve delivery of exosomes to cells expressing a cognate antigen. We generated exosomes targeting the Her2 receptor and, by varying the affinity of the scFvs and the Her2 expression level on recipient cells, we determined that both a high-affinity anti-Her2-scFv (KD≤ 1 nM) and cells expressing a high level (≥106 copies per cell) of Her2 were optimally required to enable selective uptake. We also demonstrate that targeting exosomes to cells via a specific cell surface receptor can alter their intracellular trafficking route, providing opportunities to influence the efficiency of delivery and fate of intracellular cargo. These experiments provide solid data to support the wider application of exosomes displaying antibody fragments as vehicles for the targeted delivery of therapeutic molecules.
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Affiliation(s)
- Andrea Longatti
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Christina Schindler
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Andie Collinson
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Lesley Jenkinson
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Carl Matthews
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Laura Fitzpatrick
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Margaret Blundy
- Core Tissue Culture, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK
| | - Ralph Minter
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Tristan Vaughan
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
| | - Michael Shaw
- National Physical Laboratory, Teddington, TW11 0LW, UK and Department of Computer Science, University College London, London, WC1 6BT, UK
| | - Natalie Tigue
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd., Granta Park, Cambridge, CB21 6GH, UK.
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Ponduri R, Kumar P, Vadali LRAO, Modugu NR. Water‐PEG‐400 Mediated an Efficient One‐Pot Eco‐Friendly Synthesis of Functionalized Isoxazole Substituted Chromeno[2, 3‐
b
]pyridine‐3‐carboxylate Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201801089] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rajasekhar Ponduri
- Mylan Laboratories Limited, Bollaram, Jinnaram (Mandal), Medak, (Dist), Hyderabad, Telangana State India
- JNTU−H College of Engineering, CCST, IST, Kukatpally Hyderabad-500085, Telangana State India
| | - Pramod Kumar
- JNTU−H College of Engineering, CCST, IST, Kukatpally Hyderabad-500085, Telangana State India
| | - Lakshmana RAO Vadali
- Mylan Laboratories Limited, Bollaram, Jinnaram (Mandal), Medak, (Dist), Hyderabad, Telangana State India
| | - Nagi Reddy Modugu
- Department of Organic Synthesis and Process Chemistry (CSIR)Indian Institute of Chemical Technology Uppal Road, Tarnaka, Hyderabad 500007, Telangana India
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Kar A, Gutierrez-Hartmann A. ESE-1/ELF3 mRNA expression associates with poor survival outcomes in HER2 + breast cancer patients and is critical for tumorigenesis in HER2 + breast cancer cells. Oncotarget 2017; 8:69622-69640. [PMID: 29050229 PMCID: PMC5642504 DOI: 10.18632/oncotarget.18710] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 05/23/2017] [Indexed: 12/25/2022] Open
Abstract
ESE-1/Elf3 and HER2 appear to establish a positive feedback regulatory loop, but the precise role of ESE-1 in HER2+ breast tumorigenesis remains unknown. Analyzing public repositories, we found that luminal B and HER2 subtype patients with high ESE-1 mRNA levels displayed worse relapse free survival. We stably knocked down ESE-1 in HER2+ luminal B BT474 cells and HER2 subtype SKBR3 cells, which resulted in decreased cell proliferation, colony formation, and anchorage-independent growth in vitro. Stable ESE-1 knockdown inhibited HER2-dependent signaling in BT474 cells and inhibited mTOR activation in SKBR3 cells, but reduced Akt signaling in both cell types. Expression of a constitutively-active Myr-Akt partially rescued the anti-proliferative effect of ESE-1 knockdown in both cell lines. Furthermore, ESE-1 knockdown inhibited cyclin D1, resulting in a G1 delay in both cell lines. Finally, ESE-1 knockdown completely inhibited BT474 cell xenograft tumors in NOD/SCID female mice, which correlated with reduced in vitro tumorsphere formation. Taken together, these results reveal the ESE-1 controls transformation via distinct upstream signaling mechanisms in SKBR3 and BT474 cells, which ultimately impinge on Akt and cyclin D1 in both cell types to regulate cell proliferation. Particularly significant is that ESE-1 controls tumorigenesis and is associated with worse clinical outcomes in HER2 breast cancer.
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Affiliation(s)
- Adwitiya Kar
- Cancer Biology Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Arthur Gutierrez-Hartmann
- Cancer Biology Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.,Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.,Department of Biochemistry & Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.,Program in Molecular Biology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Archer LK, Frame FM, Maitland NJ. Stem cells and the role of ETS transcription factors in the differentiation hierarchy of normal and malignant prostate epithelium. J Steroid Biochem Mol Biol 2017; 166:68-83. [PMID: 27185499 DOI: 10.1016/j.jsbmb.2016.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/25/2016] [Accepted: 05/07/2016] [Indexed: 12/18/2022]
Abstract
Prostate cancer is the most common cancer of men in the UK and accounts for a quarter of all new cases. Although treatment of localised cancer can be successful, there is no cure for patients presenting with invasive prostate cancer and there are less treatment options. They are generally treated with androgen-ablation therapies but eventually the tumours become hormone resistant and patients develop castration-resistant prostate cancer (CRPC) for which there are no further successful or curative treatments. This highlights the need for new treatment strategies. In order to prevent prostate cancer recurrence and treatment resistance, all the cell populations in a heterogeneous prostate tumour must be targeted, including the rare cancer stem cell (CSC) population. The ETS transcription factor family members are now recognised as a common feature in multiple cancers including prostate cancer; with aberrant expression, loss of tumour suppressor function, inactivating mutations and the formation of fusion genes observed. Most notably, the TMPRSS2-ERG gene fusion is present in approximately 50% of prostate cancers and in prostate CSCs. However, the role of other ETS transcription factors in prostate cancer is less well understood. This review will describe the prostate epithelial cell hierarchy and discuss the evidence behind prostate CSCs and their inherent resistance to conventional cancer therapies. The known and proposed roles of the ETS family of transcription factors in prostate epithelial cell differentiation and regulation of the CSC phenotype will be discussed, as well as how they might be targeted for therapy.
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Affiliation(s)
- Leanne K Archer
- Cancer Research Unit, Department of Biology, University of York, York, YO10 5DD, United Kingdom
| | - Fiona M Frame
- Cancer Research Unit, Department of Biology, University of York, York, YO10 5DD, United Kingdom
| | - Norman J Maitland
- Cancer Research Unit, Department of Biology, University of York, York, YO10 5DD, United Kingdom.
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Savych I, Ejaz SA, Shah SJA, Iaroshenko VO, Villinger A, Sosnovskikh VY, Iqbal J, Abbasi A, Langer P. Reactions of 3-Acylchromones with Heterocyclic Ketene Aminals: One-Pot Synthesis and Phosphatase Inhibitory Activity of Fused Pyridine Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Iryna Savych
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Syeda Abida Ejaz
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Syed Jawad Ali Shah
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Viktor O. Iaroshenko
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
- National Taras Shevchenko University; 62 Volodymyrska Str. 01033 Kyiv Ukraine
| | - Alexander Villinger
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | | | - Jamshed Iqbal
- Centre for Advanced Drug Research; COMSATS Institute of Information Technology; Abbottabad Pakistan
| | - Afshin Abbasi
- Department of Chemistry; Faculty of Science; University of Qom; Qom Iran
| | - Peter Langer
- Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
- Leibniz Institut für Katalyse; Albert-Einstein-Str. 18059 Rostock Germany
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Lepitre T, Pintiala C, Muru K, Comesse S, Rebbaa A, Lawson AM, Daïch A. Competitive intramolecular C–C vs. C–O bond coupling reactions toward C6 ring-fused 2-pyridone synthesis. Org Biomol Chem 2016; 14:3564-73. [DOI: 10.1039/c6ob00303f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work described a competitive C–C vs. C–O bond forming reaction at the challenging C6-position of 2-pyridones through Pd catalysis and silver radical cyclization.
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Affiliation(s)
- T. Lepitre
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
| | - C. Pintiala
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
| | - K. Muru
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
| | - S. Comesse
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
| | - A. Rebbaa
- Department of Pathology
- University of Pittsburgh
- Children's Hospital of Pittsburgh of UPMC
- Pittsburgh
- USA
| | - A. M. Lawson
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
| | - A. Daïch
- Laboratoire de Chimie
- URCOM
- EA 3221
- INC3M CNRS FR-3038
- Normandie Université (Université du Havre)
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