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Lee JY, Bhandare RR, Boddu SHS, Shaik AB, Saktivel LP, Gupta G, Negi P, Barakat M, Singh SK, Dua K, Chellappan DK. Molecular mechanisms underlying the regulation of tumour suppressor genes in lung cancer. Biomed Pharmacother 2024; 173:116275. [PMID: 38394846 DOI: 10.1016/j.biopha.2024.116275] [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: 11/24/2023] [Revised: 01/30/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Tumour suppressor genes play a cardinal role in the development of a large array of human cancers, including lung cancer, which is one of the most frequently diagnosed cancers worldwide. Therefore, extensive studies have been committed to deciphering the underlying mechanisms of alterations of tumour suppressor genes in governing tumourigenesis, as well as resistance to cancer therapies. In spite of the encouraging clinical outcomes demonstrated by lung cancer patients on initial treatment, the subsequent unresponsiveness to first-line treatments manifested by virtually all the patients is inherently a contentious issue. In light of the aforementioned concerns, this review compiles the current knowledge on the molecular mechanisms of some of the tumour suppressor genes implicated in lung cancer that are either frequently mutated and/or are located on the chromosomal arms having high LOH rates (1p, 3p, 9p, 10q, 13q, and 17p). Our study identifies specific genomic loci prone to LOH, revealing a recurrent pattern in lung cancer cases. These loci, including 3p14.2 (FHIT), 9p21.3 (p16INK4a), 10q23 (PTEN), 17p13 (TP53), exhibit a higher susceptibility to LOH due to environmental factors such as exposure to DNA-damaging agents (carcinogens in cigarette smoke) and genetic factors such as chromosomal instability, genetic mutations, DNA replication errors, and genetic predisposition. Furthermore, this review summarizes the current treatment landscape and advancements for lung cancers, including the challenges and endeavours to overcome it. This review envisages inspired researchers to embark on a journey of discovery to add to the list of what was known in hopes of prompting the development of effective therapeutic strategies for lung cancer.
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Affiliation(s)
- Jia Yee Lee
- School of Health Sciences, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia
| | - Richie R Bhandare
- Department of Pharmaceutical Sciences, College of Pharmacy & Health Sciences, Ajman University, Al-Jurf, P.O. Box 346, Ajman, United Arab Emirates; Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jurf, P.O. Box 346, Ajman, United Arab Emirates.
| | - Sai H S Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy & Health Sciences, Ajman University, Al-Jurf, P.O. Box 346, Ajman, United Arab Emirates; Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jurf, P.O. Box 346, Ajman, United Arab Emirates
| | - Afzal B Shaik
- St. Mary's College of Pharmacy, St. Mary's Group of Institutions Guntur, Affiliated to Jawaharlal Nehru Technological University Kakinada, Chebrolu, Guntur, Andhra Pradesh 522212, India; Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, India
| | - Lakshmana Prabu Saktivel
- Department of Pharmaceutical Technology, University College of Engineering (BIT Campus), Anna University, Tiruchirappalli 620024, India
| | - Gaurav Gupta
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Al-Jurf, P.O. Box 346, Ajman, United Arab Emirates; School of Pharmacy, Suresh Gyan Vihar University, Jaipur, Rajasthan 302017, India
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University, PO Box 9, Solan, Himachal Pradesh 173229, India
| | - Muna Barakat
- Department of Clinical Pharmacy & Therapeutics, Applied Science Private University, Amman-11937, Jordan
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara 144411, India; Australian Research Centre in Complementary and Integrative Medicine, Faculty of Health, University of Technology Sydney, Sydney 2007, Australia
| | - Kamal Dua
- Australian Research Centre in Complementary and Integrative Medicine, Faculty of Health, University of Technology Sydney, Sydney 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney 2007, Australia
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia.
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2
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Ankenbauer KE, Rao TC, Mattheyses AL, Bellis SL. Sialylation of EGFR by ST6GAL1 induces receptor activation and modulates trafficking dynamics. J Biol Chem 2023; 299:105217. [PMID: 37660914 PMCID: PMC10520885 DOI: 10.1016/j.jbc.2023.105217] [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: 06/05/2023] [Revised: 08/06/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023] Open
Abstract
Aberrant glycosylation is a hallmark of a cancer cell. One prevalent alteration is an enrichment in α2,6-linked sialylation of N-glycosylated proteins, a modification directed by the ST6GAL1 sialyltransferase. ST6GAL1 is upregulated in many malignancies including ovarian cancer. Prior studies have shown that the addition of α2,6 sialic acid to the epidermal growth factor receptor (EGFR) activates this receptor, although the mechanism was largely unknown. To investigate the role of ST6GAL1 in EGFR activation, ST6GAL1 was overexpressed in the OV4 ovarian cancer line, which lacks endogenous ST6GAL1, or knocked-down in the OVCAR-3 and OVCAR-5 ovarian cancer lines, which have robust ST6GAL1 expression. Cells with high expression of ST6GAL1 displayed increased activation of EGFR and its downstream signaling targets, AKT and NFκB. Using biochemical and microscopy approaches, including total internal reflection fluorescence microscopy, we determined that the α2,6 sialylation of EGFR promoted its dimerization and higher order oligomerization. Additionally, ST6GAL1 activity was found to modulate EGFR trafficking dynamics following EGF-induced receptor activation. Specifically, EGFR sialylation enhanced receptor recycling to the cell surface following activation while simultaneously inhibiting lysosomal degradation. 3D widefield deconvolution microscopy confirmed that in cells with high ST6GAL1 expression, EGFR exhibited greater colocalization with Rab11 recycling endosomes and reduced colocalization with LAMP1-positive lysosomes. Collectively, our findings highlight a novel mechanism by which α2,6 sialylation promotes EGFR signaling by facilitating receptor oligomerization and recycling.
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Affiliation(s)
- Katherine E Ankenbauer
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Tejeshwar C Rao
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Alexa L Mattheyses
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
| | - Susan L Bellis
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
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3
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Ankenbauer KE, Rao TC, Mattheyses AL, Bellis SL. Sialylation of EGFR by ST6GAL1 induces receptor activation and modulates trafficking dynamics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.03.543566. [PMID: 37398202 PMCID: PMC10312608 DOI: 10.1101/2023.06.03.543566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Aberrant glycosylation is a hallmark of a cancer cell. One prevalent alteration is an enrichment in α2,6-linked sialylation of N-glycosylated proteins, a modification directed by the ST6GAL1 sialyltransferase. ST6GAL1 is upregulated in many malignancies including ovarian cancer. Prior studies have shown that the addition of α2,6 sialic acid to the Epidermal Growth Factor Receptor (EGFR) activates this receptor, although the mechanism was largely unknown. To investigate the role of ST6GAL1 in EGFR activation, ST6GAL1 was overexpressed in the OV4 ovarian cancer line, which lacks endogenous ST6GAL1, or knocked down in the OVCAR-3 and OVCAR-5 ovarian cancer lines, which have robust ST6GAL1 expression. Cells with high expression of ST6GAL1 displayed increased activation of EGFR and its downstream signaling targets, AKT and NFκB. Using biochemical and microscopy approaches, including Total Internal Reflection Fluorescence (TIRF) microscopy, we determined that the α2,6 sialylation of EGFR promoted its dimerization and higher order oligomerization. Additionally, ST6GAL1 activity was found to modulate EGFR trafficking dynamics following EGF-induced receptor activation. Specifically, EGFR sialylation enhanced receptor recycling to the cell surface following activation while simultaneously inhibiting lysosomal degradation. 3D widefield deconvolution microscopy confirmed that in cells with high ST6GAL1 expression, EGFR exhibited greater co-localization with Rab11 recycling endosomes and reduced co-localization with LAMP1-positive lysosomes. Collectively, our findings highlight a novel mechanism by which α2,6 sialylation promotes EGFR signaling by facilitating receptor oligomerization and recycling.
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Affiliation(s)
- Katherine E. Ankenbauer
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
| | - Tejeshwar C. Rao
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
| | - Alexa L. Mattheyses
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
| | - Susan L. Bellis
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
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4
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Grabe T, Jeyakumar K, Niggenaber J, Schulz T, Koska S, Kleinbölting S, Beck ME, Müller MP, Rauh D. Addressing the Osimertinib Resistance Mutation EGFR-L858R/C797S with Reversible Aminopyrimidines. ACS Med Chem Lett 2023; 14:591-598. [PMID: 37197473 PMCID: PMC10184309 DOI: 10.1021/acsmedchemlett.2c00514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 04/13/2023] [Indexed: 05/19/2023] Open
Abstract
Drug resistance mutations emerging during the treatment of non-small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) inhibitors represent a major challenge in personalized cancer treatment and require constant development of new inhibitors. For the covalent irreversible EGFR inhibitor osimertinib, the predominant resistance mechanism is the acquired C797S mutation, which abolishes the covalent anchor point and thus results in a dramatic loss in potency. In this study, we present next-generation reversible EGFR inhibitors with the potential to overcome this EGFR-C797S resistance mutation. For this, we combined the reversible methylindole-aminopyrimidine scaffold known from osimertinib with the affinity driving isopropyl ester of mobocertinib. By occupying the hydrophobic back pocket, we were able to generate reversible inhibitors with subnanomolar activity against EGFR-L858R/C797S and EGFR-L858R/T790M/C797S with cellular activity on EGFR-L858R/C797S dependent Ba/F3 cells. Additionally, we were able to resolve cocrystal structures of these reversible aminopyrimidines, which will guide further inhibitor design toward C797S-mutated EGFR.
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Affiliation(s)
- Tobias Grabe
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | | | | | - Tom Schulz
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Sandra Koska
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Silke Kleinbölting
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | | | - Matthias P. Müller
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Daniel Rauh
- Department of Chemistry and
Chemical Biology, TU Dortmund University
and Drug Discovery Hub Dortmund (DDHD) am Zentrum für Integrierte
Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
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Oguchi K, Araki H, Tsuji S, Nakamura M, Miura A, Funabashi K, Osada A, Tanaka S, Suzuki T, Kobayashi SS, Mizuarai S. TAS2940, a novel brain-penetrable pan-ERBB inhibitor, for tumors with HER2 and EGFR aberrations. Cancer Sci 2023; 114:654-664. [PMID: 36282234 PMCID: PMC9899605 DOI: 10.1111/cas.15617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/01/2022] [Accepted: 10/13/2022] [Indexed: 11/29/2022] Open
Abstract
Genetic alterations in human epidermal growth factor receptor type 2 (HER2)/epidermal growth factor receptor (EGFR) are commonly associated with breast and lung cancers and glioblastomas. Cancers with avian erythroblastosis oncogene B (ERBB) deregulation are highly metastatic and can cause primary brain tumors. Currently, no pan-ERBB inhibitor with remarkable brain penetration is available. Here, TAS2940, a novel irreversible pan-ERBB inhibitor with improved brain penetrability, was evaluated for its efficacy against several ERBB aberrant cancer models. The selectivity of TAS2940 was evaluated by enzymatic kinase assays. The inhibitory effects of TAS2940 against ERBB genetic alterations were examined using MCF10A cells expressing various HER2 or EGFR mutations and other generic cell lines harboring deregulated ERBB expression. In vivo efficacy of TAS2940 was examined following oral treatment in subcutaneous or intracranial xenograft cancer models. TAS2940 was highly potent against cells harboring HER2/EGFR alterations. TAS2940 could selectively inhibit phosphorylation of targets and the growth of cancer cells with ERBB aberrations in vitro. TAS2940 also inhibited tumor growth in xenograft mouse models with ERBB aberrations: HER2 amplification, HER2/EGFR exon 20 insertions, and EGFR vIII mutation. TAS2940 was effective in the intracranial xenograft models of HER2/EGFR cancers and improved the survival of these mice. TAS2940 has promising therapeutic effects in preclinical study against cancers harboring HER2/EGFR mutations, especially metastatic and primary brain tumors. Our results highlight potential novel strategies against lung cancers with brain metastases harboring HER2/EGFR exon 20 insertions and glioblastomas with EGFR aberrations.
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Affiliation(s)
- Kei Oguchi
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
- Department of Integrated Biosciences, Graduate School of Frontier SciencesThe University of TokyoKashiwaJapan
| | - Hikari Araki
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Shingo Tsuji
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Masayuki Nakamura
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Akihiro Miura
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Kaoru Funabashi
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Akiko Osada
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Sakiho Tanaka
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Takamasa Suzuki
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
| | - Susumu S. Kobayashi
- Department of Integrated Biosciences, Graduate School of Frontier SciencesThe University of TokyoKashiwaJapan
- Division of Translational Genomics, Exploratory Oncology Research and Clinical Trial CenterNational Cancer CenterKashiwaJapan
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMassachusettsUSA
| | - Shinji Mizuarai
- Discovery and Preclinical Research DivisionTaiho Pharmaceutical Co., LtdTsukubaJapan
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Dzul Keflee R, Hoong Leong K, Ogawa S, Bignon J, Chiang Chan M, Weng Kong K. Overview of the multifaceted resistances toward EGFR-TKIs and new chemotherapeutic strategies in non-small cell lung cancer. Biochem Pharmacol 2022; 205:115262. [PMID: 36191627 DOI: 10.1016/j.bcp.2022.115262] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/02/2022]
Abstract
The role of epidermal growth factor receptor (EGFR) in non-small cell lung cancer (NSCLC) has been vastly studied over the last decade. This has led to the rapid development of many generations of EGFR tyrosine kinase inhibitors (EGFR-TKIs). However, patients treated with third-generation TKIs (osimertinib, avitinib and rociletinib) targeting the EGFR T790M mutation have shown emerging resistances and relapses. Therefore, further molecular understanding of NSCLC mutations, bypass signalling, tumour microenvironment and the existence of cancer stem cells to overcome such resistances is warranted. This will pave the way for designing novel and effective chemotherapies to improve patients' overall survival. In this review, we provide an overview of the multifaceted mechanism of resistances towards EGFR-TKIs, as well as the challenges and perspectives that should be addressed in strategising chemotherapeutic treatments to overcome the ever evolving and adaptive nature of NSCLC.
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Affiliation(s)
- Rashidi Dzul Keflee
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kok Hoong Leong
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Satoshi Ogawa
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia
| | - Jerome Bignon
- Institut de Chimie des Substances Naturelles CNRS UPR 2301, Université Paris Saclay, Gif-sur-Yvette, France
| | - Mun Chiang Chan
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kin Weng Kong
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
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Beyond Osimertinib: The Development of Third-Generation EGFR Tyrosine Kinase Inhibitors For Advanced EGFR+ NSCLC. J Thorac Oncol 2021; 16:740-763. [DOI: 10.1016/j.jtho.2020.11.028] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/01/2020] [Accepted: 11/27/2020] [Indexed: 12/11/2022]
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8
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Watanabe S, Goto Y, Yasuda H, Kohno T, Motoi N, Ohe Y, Nishikawa H, Kobayashi SS, Kuwano K, Togashi Y. HSP90 inhibition overcomes EGFR amplification-induced resistance to third-generation EGFR-TKIs. Thorac Cancer 2021; 12:631-642. [PMID: 33471376 PMCID: PMC7919131 DOI: 10.1111/1759-7714.13839] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Patients with non-small cell lung cancer (NSCLC) harboring activating EGFR mutations are sensitive to epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) but inevitably develop resistance to the inhibitors mostly through acquisition of the secondary T790M mutation. Although third-generation EGFR-TKIs overcome this resistance by selectively inhibiting EGFR with EGFR-TKI-sensitizing and T790M mutations, acquired resistance to third-generation EGFR-TKIs invariably develops. METHODS Next-generation sequencing (NGS) and fluorescence in situ hybridization (FISH) analysis were performed in an EGFR T790M-mutated NSCLC patient who had progressed after a third-generation EGFR-TKI, TAS-121. EGFR-mutated cell lines were subjected to a cell proliferation assay and western blotting analysis with EGFR-TKIs and a heat shock protein 90 (HSP90) inhibitor. RESULTS NGS and FISH analysis revealed EGFR amplification in the resistant cancer cells. While EGFR L858R/T90M-mutated cell line was sensitive to osimertinib or TAS-121 in vitro, EGFR-overexpressing cell lines displayed resistance to these EGFR-TKIs. Western blot analysis showed that EGFR phosphorylation and overexpression of EGFR in cell lines was not suppressed by third-generation EGFR-TKIs. In contrast, an HSP90 inhibitor reduced total and phosphorylated EGFR and inhibited the proliferation of resistant cell lines. CONCLUSIONS EGFR amplification confers resistance to third-generation EGFR-TKIs which can be overcome by HSP90 inhibition. The results provide a preclinical rationale for the use of HSP90 inhibitors to overcome EGFR amplification-mediated resistance.
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Affiliation(s)
- Sho Watanabe
- Division of Cancer ImmunologyExploratory Oncology Research & Clinical Trial Center (EPOC), National Cancer CenterChibaJapan
- Department of Thoracic OncologyNational Cancer Center HospitalTokyoJapan
- Department of Respiratory MedicineJikei University of MedicineTokyoJapan
| | - Yasushi Goto
- Department of Thoracic OncologyNational Cancer Center HospitalTokyoJapan
| | - Hiroyuki Yasuda
- Division of Pulmonary Medicine, Department of MedicineKeio University, School of MedicineTokyoJapan
| | - Takashi Kohno
- Genome BiologyExploratory Oncology Research & Clinical Trial Center (EPOC), National Cancer CenterChibaJapan
| | - Noriko Motoi
- Pathology and Clinical LaboratoriesNational Cancer Center HospitalTokyoJapan
| | - Yuichiro Ohe
- Department of Thoracic OncologyNational Cancer Center HospitalTokyoJapan
| | - Hiroyoshi Nishikawa
- Division of Cancer ImmunologyExploratory Oncology Research & Clinical Trial Center (EPOC), National Cancer CenterChibaJapan
| | - Susumu S. Kobayashi
- Translational Genomics, Research InstituteExploratory Oncology Research & Clinical Trial Center (EPOC), National Cancer CenterChibaJapan
- Department of MedicineBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
| | - Kazuyoshi Kuwano
- Department of Respiratory MedicineJikei University of MedicineTokyoJapan
| | - Yosuke Togashi
- Division of Cancer ImmunologyExploratory Oncology Research & Clinical Trial Center (EPOC), National Cancer CenterChibaJapan
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Du L, Yee SS, Ramachandran K, Risinger AL. Elucidating target specificity of the taccalonolide covalent microtubule stabilizers employing a combinatorial chemical approach. Nat Commun 2020; 11:654. [PMID: 32005831 PMCID: PMC6994698 DOI: 10.1038/s41467-019-14277-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/19/2019] [Indexed: 11/09/2022] Open
Abstract
The taccalonolide microtubule stabilizers covalently bind β-tubulin and overcome clinically relevant taxane resistance mechanisms. Evaluations of the target specificity and detailed drug-target interactions of taccalonolides, however, have been limited in part by their irreversible target engagement. In this study, we report the synthesis of fluorogenic taccalonolide probes that maintain the native biological properties of the potent taccalonolide, AJ. These carefully optimized, cell-permeable probes outperform commercial taxane-based probes and enable direct visualization of taccalonolides in both live and fixed cells with dramatic microtubule colocalization. The specificity of taccalonolide binding to β-tubulin is demonstrated by immunoblotting, which allows for determination of the relative contribution of key tubulin residues and taccalonolide moieties for drug-target interactions by activity-based protein profiling utilizing site-directed mutagenesis and computational modeling. This combinatorial approach provides a generally applicable strategy for investigating the binding specificity and molecular interactions of covalent binding drugs in a cellular environment.
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Affiliation(s)
- Lin Du
- Department of Chemistry and Biochemistry, The University of Oklahoma, Norman, OK, USA.
- Institute for Natural Products Applications and Research Technologies, The University of Oklahoma, Norman, OK, USA.
| | - Samantha S Yee
- Department of Pharmacology, The University of Texas Health Science Center, San Antonio, TX, USA
| | - Karthik Ramachandran
- Department of Medicine, Division of Nephrology, The University of Texas Health Science Center, San Antonio, TX, USA
| | - April L Risinger
- Department of Pharmacology, The University of Texas Health Science Center, San Antonio, TX, USA.
- Mays Cancer Center, The University of Texas Health Science Center, San Antonio, TX, USA.
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10
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Si Z, Hu P, Zhou J, Lin Q, Xiu Y, Cheng D. Evaluation of EGFR-TK Expression with a 99mTc-Labeled Complex Bearing Quinazoline Pharmacophore. Cancer Biother Radiopharm 2019; 34:551-558. [PMID: 31436470 DOI: 10.1089/cbr.2019.2846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Zhan Si
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
| | - Pengcheng Hu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
| | - Jun Zhou
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
| | - Qingyu Lin
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
| | - Yan Xiu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
| | - Dengfeng Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Zhongshan Hospital, Shanghai Institute of Medical Imaging, Shanghai, China
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