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Thomas BJ, Guldenpfennig C, Guan Y, Winkler C, Beecher M, Beedy M, Berendzen AF, Ma L, Daniels MA, Burke DH, Porciani D. Targeting lung cancer with clinically relevant EGFR mutations using anti-EGFR RNA aptamer. Mol Ther Nucleic Acids 2023; 34:102046. [PMID: 37869258 PMCID: PMC10589377 DOI: 10.1016/j.omtn.2023.102046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/29/2023] [Indexed: 10/24/2023]
Abstract
A significant fraction of non-small cell lung cancer (NSCLC) cases are due to oncogenic mutations in the tyrosine kinase domain of the epidermal growth factor receptor (EGFR). Anti-EGFR antibodies have shown limited clinical benefit for NSCLC, whereas tyrosine kinase inhibitors (TKIs) are effective, but resistance ultimately occurs. The current landscape suggests that alternative ligands that target wild-type and mutant EGFRs are desirable for targeted therapy or drug delivery development. Here we evaluate NSCLC targeting using an anti-EGFR aptamer (MinE07). We demonstrate that interaction sites of MinE07 overlap with clinically relevant antibodies targeting extracellular domain III and that MinE07 retains binding to EGFR harboring the most common oncogenic and resistance mutations. When MinE07 was linked to an anti-c-Met aptamer, the EGFR/c-Met bispecific aptamer (bsApt) showed superior labeling of NSCLC cells in vitro relative to monospecific aptamers. However, dual targeting in vivo did not improve the recognition of NSCLC xenografts compared to MinE07. Interestingly, biodistribution of Cy7-labeled bsApt differed significantly from Alexa Fluor 750-labeled bsApt. Overall, our findings demonstrate that aptamer formulations containing MinE07 can target ectopic lung cancer without additional stabilization or PEGylation and highlights the potential of MinE07 as a targeting reagent for the recognition of NSCLC harboring clinically relevant EGFRs.
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Affiliation(s)
- Brian J. Thomas
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
| | - Caitlyn Guldenpfennig
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
| | - Yue Guan
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
| | - Calvin Winkler
- Department of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Margaret Beecher
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - Michaela Beedy
- Department of Biochemistry, Westminster College, Fulton, MO 65251, USA
| | - Ashley F. Berendzen
- Research Division/Biomolecular Imaging Center, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 65201, USA
| | - Lixin Ma
- Research Division/Biomolecular Imaging Center, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 65201, USA
- Department of Radiology, University of Missouri School of Medicine, Columbia, MO 65212, USA
| | - Mark A. Daniels
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
| | - Donald H. Burke
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - David Porciani
- Department of Molecular Microbiology and Immunology, Bond Life Sciences Center, University of Missouri School of Medicine, Columbia, MO 65211, USA
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Abstract
NF-κB signaling is essential to an effective innate and adaptive immune response. Many immune-specific functional and developmental outcomes depend in large on NF-κB. The formidable task of sorting out the mechanisms behind the regulation and outcome of NF-κB signaling remains an important area of immunology research. Here we briefly discuss the role of NF-κB in regulating cell fate decisions at various times in the path of B cell development, activation, and the generation of long-term humoral immunity.
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Affiliation(s)
- Caitlyn Guldenpfennig
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
| | - Emma Teixeiro
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
| | - Mark Daniels
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
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3
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Smyth DS, Trujillo M, Gregory DA, Cheung K, Gao A, Graham M, Guan Y, Guldenpfennig C, Hoxie I, Kannoly S, Kubota N, Lyddon TD, Markman M, Rushford C, San KM, Sompanya G, Spagnolo F, Suarez R, Teixeiro E, Daniels M, Johnson MC, Dennehy JJ. Tracking cryptic SARS-CoV-2 lineages detected in NYC wastewater. Nat Commun 2022; 13:635. [PMID: 35115523 PMCID: PMC8813986 DOI: 10.1038/s41467-022-28246-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
Tracking SARS-CoV-2 genetic diversity is strongly indicated because diversifying selection may lead to the emergence of novel variants resistant to naturally acquired or vaccine-induced immunity. To monitor New York City (NYC) for the presence of novel variants, we deep sequence most of the receptor binding domain coding sequence of the S protein of SARS-CoV-2 isolated from the New York City wastewater. Here we report detecting increasing frequencies of novel cryptic SARS-CoV-2 lineages not recognized in GISAID's EpiCoV database. These lineages contain mutations that had been rarely observed in clinical samples, including Q493K, Q498Y, E484A, and T572N and share many mutations with the Omicron variant of concern. Some of these mutations expand the tropism of SARS-CoV-2 pseudoviruses by allowing infection of cells expressing the human, mouse, or rat ACE2 receptor. Finally, pseudoviruses containing the spike amino acid sequence of these lineages were resistant to different classes of receptor binding domain neutralizing monoclonal antibodies. We offer several hypotheses for the anomalous presence of these lineages, including the possibility that these lineages are derived from unsampled human COVID-19 infections or that they indicate the presence of a non-human animal reservoir.
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Affiliation(s)
- Davida S Smyth
- Department of Life Sciences, Texas A&M University-San Antonio, San Antonio, TX, 78224, USA
| | - Monica Trujillo
- Department of Biological Sciences and Geology, Queensborough Community College of The City University of New York, Queens, NY, 11364, USA
| | - Devon A Gregory
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Kristen Cheung
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Anna Gao
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Maddie Graham
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Yue Guan
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Caitlyn Guldenpfennig
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Irene Hoxie
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Sherin Kannoly
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Nanami Kubota
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Terri D Lyddon
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Michelle Markman
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Clayton Rushford
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Kaung Myat San
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA
| | - Geena Sompanya
- Department of Life Sciences, Texas A&M University-San Antonio, San Antonio, TX, 78224, USA
| | - Fabrizio Spagnolo
- Department of Biological & Environmental Sciences, Long Island University-Post, Greenvale, New York, 11548, USA
| | - Reinier Suarez
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Emma Teixeiro
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Mark Daniels
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA
| | - Marc C Johnson
- Department of Molecular Microbiology and Immunology, University of Missouri-School of Medicine, Columbia, MO, 65212, USA.
| | - John J Dennehy
- Biology Department, Queens College and The Graduate Center of The City University of New York, Queens, NY, 11367, USA.
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