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Cardle II, Jensen MC, Pun SH, Sellers DL. Optimized serum stability and specificity of an αvβ6 integrin-binding peptide for tumor targeting. J Biol Chem 2021; 296:100657. [PMID: 33857478 PMCID: PMC8138772 DOI: 10.1016/j.jbc.2021.100657] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/03/2022] Open
Abstract
The integrin αvβ6 is an antigen expressed at low levels in healthy tissue but upregulated during tumorigenesis, which makes it a promising target for cancer imaging and therapy. A20FMDV2 is a 20-mer peptide derived from the foot-and-mouth disease virus that exhibits nanomolar and selective affinity for αvβ6 versus other integrins. Despite this selectivity, A20FMDV2 has had limited success in imaging and treating αvβ6+ tumors in vivo because of its poor serum stability. Here, we explore the cyclization and modification of the A20FMDV2 peptide to improve its serum stability without sacrificing its affinity and specificity for αvβ6. Using cysteine amino acid substitutions and cyclization by perfluoroarylation with decafluorobiphenyl, we synthesized six cyclized A20FMDV2 variants and discovered that two retained binding to αvβ6 with modestly improved serum stability. Further d-amino acid substitutions and C-terminal sequence optimization outside the cyclized region greatly prolonged peptide serum stability without reducing binding affinity. While the cyclized A20FMDV2 variants exhibited increased nonspecific integrin binding compared with the original peptide, additional modifications with the non-natural amino acids citrulline, hydroxyproline, and d-alanine were found to restore binding specificity, with some modifications leading to greater αvβ6 integrin selectivity than the original A20FMDV2 peptide. The peptide modifications detailed herein greatly improve the potential of utilizing A20FMDV2 to target αvβ6 in vivo, expanding opportunities for cancer targeting and therapy.
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Affiliation(s)
- Ian I Cardle
- Department of Bioengineering, University of Washington, Seattle, Washington, USA; Seattle Children's Therapeutics, Seattle, Washington, USA
| | - Michael C Jensen
- Department of Bioengineering, University of Washington, Seattle, Washington, USA; Seattle Children's Therapeutics, Seattle, Washington, USA; Department of Pediatrics, University of Washington, Seattle, Washington, USA; Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Suzie H Pun
- Department of Bioengineering, University of Washington, Seattle, Washington, USA
| | - Drew L Sellers
- Department of Bioengineering, University of Washington, Seattle, Washington, USA.
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2
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Urquiza M, Guevara V, Diaz-Sana E, Mora F. The Role of αvβ6 Integrin Binding Molecules in the Diagnosis and Treatment of Cancer. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200528124936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Peptidic and non-peptidic αvβ6 integrin-binding molecules have been used in
the clinic for detection and treatment of tumors expressing αvβ6 integrin, because this protein
is expressed in malignant epithelial cells of the oral cavity, pancreas, breast, ovary,
colon and stomach carcinomas but it is not expressed in healthy adult tissue except during
wound healing and inflammation. This review focuses on the landscape of αvβ6 integrinbinding
molecules and their use in cancer treatment and detection, and discusses recent
designs for tumor detection, treatment, and immunotherapy. In the last ten years, several
reviews abamp;#945;vβ6 integrin-binding molecules and their role in cancer detection and treatment.
Firstly, this review describes the role of the αvβ6 integrin in normal tissues, how the expression
of this protein is correlated with cancer severity and its role in cancer development. Taking into account
the potential of αvβ6 integrin-binding molecules in detection and treatment of specific tumors, special
attention is given to several high-affinity αvβ6 integrin-binding peptides used for tumor imaging; particularly,
the αvβ6-binding peptide NAVPNLRGDLQVLAQKVART [A20FMDV2], derived from the foot and mouth
disease virus. This peptide labeled with either 18F, 111In or with 68Ga has been used for PET imaging of αvβ6
integrin-positive tumors. Moreover, αvβ6 integrin-binding peptides have been used for photoacoustic and fluorescence
imaging and could potentially be used in clinical application in cancer diagnosis and intraoperative
imaging of αvβ6-integrin positive tumors. Additionally, non-peptidic αvβ6-binding molecules have been designed
and used in the clinic for the detection and treatment of αvβ6-expressing tumors. Anti-αvβ6 integrin antibodies
are another useful tool for selective identification and treatment of αvβ6 (+) tumors. The utility of
these αvβ6 integrin-binding molecules as a tool for tumor detection and treatment is discussed, considering
specificity, sensitivity and serum stability. Another use of the αvβ6 integrin-binding peptides is to modify the
Ad5 cell tropism for inducing oncolytic activity of αvβ6-integrin positive tumor cells by expressing
A20FMDV2 peptide within the fiber knob protein (Ad5NULL-A20). The newly designed oncolytic
Ad5NULL-A20 virotherapy is promising for local and systemic targeting of αvβ6-overexpressing cancers. Finally,
new evidence has emerged, indicating that chimeric antigen receptor (CAR) containing the αvβ6 integrin-
binding peptide on top of CD28+CD3 endodomain displays a potent therapeutic activity in a diverse
repertoire of solid tumor models.
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Affiliation(s)
- Mauricio Urquiza
- Grupo de Investigacion en Hormonas (GIH), Department of Chemistry, National University of Columbia, Cra 30 # 45-03, Bogota, zip code 111321, Colombia
| | - Valentina Guevara
- Grupo de Investigacion en Hormonas (GIH), Department of Chemistry, National University of Columbia, Cra 30 # 45-03, Bogota, zip code 111321, Colombia
| | - Erika Diaz-Sana
- Grupo de Investigacion en Hormonas (GIH), Department of Chemistry, National University of Columbia, Cra 30 # 45-03, Bogota, zip code 111321, Colombia
| | - Felipe Mora
- Grupo de Investigacion en Hormonas (GIH), Department of Chemistry, National University of Columbia, Cra 30 # 45-03, Bogota, zip code 111321, Colombia
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3
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Bai M, Dong Y, Huang H, Fu H, Duan Y, Wang Q, Du L. Tumour targeted contrast enhanced ultrasound imaging dual-modal microbubbles for diagnosis and treatment of triple negative breast cancer. RSC Adv 2019; 9:5682-5691. [PMID: 35515929 PMCID: PMC9060891 DOI: 10.1039/c8ra09737b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/02/2019] [Indexed: 01/17/2023] Open
Abstract
At present, the treatment of triple negative breast cancer (TNBC) is a worldwide problem, urgently requiring early precise diagnosis and effective treatment methods. In our study, we designed a type of tumour targeted dual-modal microbubbles, paclitaxel (PTX)-loaded RGD-lipid microbubbles (PTX@RGD-MBs), combined with ultrasonic targeted microbubble destruction (UTMD) to precisely diagnose TNBC and to improve the curative effect. As the first-line drug, PTX, lacking specific tumour targeting and the ability to be effectively internalized by TNBC cells, is still not effective in killing TNBC cells. For this reason, we used the tumour active targeting peptide RGD to precisely guide MBs around TNBC cells through the high affinity to the integrin αvβ3 receptor, and use UTMD to generate shear stress on cells to open transient pores in the cellular membrane, so as to improve MB penetration into the cellular membrane. Sulfur hexafluoride (SF6) as the internal gas of MBs can greatly improve the resolution and sensitivity of conventional US images through nonlinear harmonics to enhance the comparison between lesions and surrounding normal tissues. The results in our study demonstrated that RGD-MBs with UTMD were internalized by TNBC cells more effectively, leading to significant increase in intercellular drug concentrations of TNBC cells, thus achieving the best inhibitory effect on TNBC cells in vitro. Ultrasonic experiment showed that PTX@RGD-MBs produced high quality contrast enhanced ultrasound (CEUS) images in vitro and in vivo, providing a better method for diagnosis and evaluation of the TNBC. Therefore, we conclude the advantages of excellent anti-tumour effect and CEUS imaging of PTX@RGD-MBs provided a better application for diagnosis and treatment of TNBC. Tumour targeted contrast-enhanced ultrasound imaging dual-modal microbubbles (PTX@RGD-MBs) combined with UTMD for diagnosing and treating triple negative breast cancer.![]()
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Affiliation(s)
- Min Bai
- Department of Ultrasound
- Shanghai General Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200080
- China
| | - Yang Dong
- State Key Laboratory of Oncogenes and Related Genes
- Shanghai Cancer Institute
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
| | - Hui Huang
- State Key Laboratory of Oncogenes and Related Genes
- Shanghai Cancer Institute
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
| | - Hao Fu
- State Key Laboratory of Oncogenes and Related Genes
- Shanghai Cancer Institute
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
| | - Yourong Duan
- State Key Laboratory of Oncogenes and Related Genes
- Shanghai Cancer Institute
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
| | - Qi Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Lianfang Du
- Department of Ultrasound
- Shanghai General Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200080
- China
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4
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Maltsev OV, Marelli UK, Kapp TG, Di Leva FS, Di Maro S, Nieberler M, Reuning U, Schwaiger M, Novellino E, Marinelli L, Kessler H. Stable Peptides Instead of Stapled Peptides: Highly Potent αvβ6-Selective Integrin Ligands. Angew Chem Int Ed Engl 2015; 55:1535-9. [PMID: 26663660 DOI: 10.1002/anie.201508709] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/26/2015] [Indexed: 12/15/2022]
Abstract
The αvβ6 integrin binds the RGD-containing peptide of the foot and mouth disease virus with high selectivity. In this study, the long binding helix of this ligand was downsized to an enzymatically stable cyclic peptide endowed with sub-nanomolar binding affinity toward the αvβ6 receptor and remarkable selectivity against other integrins. Computational studies were performed to disclose the molecular bases underlying the high binding affinity and receptor subtype selectivity of this peptide. Finally, the utility of the ligand for use in biomedical studies was also demonstrated here.
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Affiliation(s)
- Oleg V Maltsev
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Udaya Kiran Marelli
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Tobias G Kapp
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Francesco Saverio Di Leva
- Dipartimento di Farmacia, Università di Napoli Federico II, Via D. Montesano 49, 80131, Napoli, Italy
| | - Salvatore Di Maro
- DiSTABiF, Secondo Università di Napoli, Via Vivaldi 43, 81100, Caserta, Italy
| | - Markus Nieberler
- Department of Oral and Maxillofacial Surgery, University Hospital rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, München, Germany
| | - Ute Reuning
- Klinische Forschergruppe der Frauenklinik, University Hospital rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, München, Germany
| | - Markus Schwaiger
- Department of Nuclear Medicine, University Hospital rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, München, Germany
| | - Ettore Novellino
- Dipartimento di Farmacia, Università di Napoli Federico II, Via D. Montesano 49, 80131, Napoli, Italy
| | - Luciana Marinelli
- Dipartimento di Farmacia, Università di Napoli Federico II, Via D. Montesano 49, 80131, Napoli, Italy
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.
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5
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Maltsev OV, Marelli UK, Kapp TG, Di Leva FS, Di Maro S, Nieberler M, Reuning U, Schwaiger M, Novellino E, Marinelli L, Kessler H. Stabile Peptide statt “gestapelte Peptide”: hochaffine αvβ6-selektive Integrinliganden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508709] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Oleg V. Maltsev
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Udaya Kiran Marelli
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Tobias G. Kapp
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Francesco Saverio Di Leva
- Dipartimento di Farmacia; Università di Napoli Federico II; Via D. Montesano 49 80131 Napoli Italien
| | - Salvatore Di Maro
- DiSTABiF; Secondo Università di Napoli; Via Vivaldi 43 81100 Caserta Italien
| | - Markus Nieberler
- Department of Oral and Maxillofacial Surgery; University Hospital rechts der Isar, Technische Universität München; Ismaninger Straße 22 81675 München Deutschland
| | - Ute Reuning
- Klinische Forschergruppe der Frauenklinik; University Hospital rechts der Isar, Technische Universität München; Ismaninger Straße 22 81675 München Deutschland
| | - Markus Schwaiger
- Department of Nuclear Medicine; University Hospital rechts der Isar, Technische Universität München; Ismaninger Straße 22 81675 München Deutschland
| | - Ettore Novellino
- Dipartimento di Farmacia; Università di Napoli Federico II; Via D. Montesano 49 80131 Napoli Italien
| | - Luciana Marinelli
- Dipartimento di Farmacia; Università di Napoli Federico II; Via D. Montesano 49 80131 Napoli Italien
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
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6
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Sorge JL, Wagstaff JL, Rowe ML, Williamson RA, Howard MJ. Q2DSTD NMR deciphers epitope-mapping variability for peptide recognition of integrin αvβ6. Org Biomol Chem 2015; 13:8001-7. [PMID: 26119198 PMCID: PMC4541471 DOI: 10.1039/c5ob01237f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Integrin αvβ6 is a cell surface arginine-glycine-aspartic acid (RGD)-specific heterodimeric glycoprotein that is only expressed on epithelia during processes of tissue remodelling, including cancer. The specificity and molecular nature of interactions toward this integrin are poorly understood and new insights into such processes are important to cell biologists and pharmaceutical drug discovery. This study demonstrates the application of quantitative two-dimensional saturation transfer (Q2DSTD) NMR to obtain precise details of peptide interactions with integrin αvβ6 and their correlation to specificity for the integrin. This approach highlights subtle but significant differences in ligand contact by three related 21-mer peptides: FMDV2, an αvβ6 specific peptide and DBD1 and LAP2T1 peptides that bind many αv integrins in addition to αvβ6. FMDV2 and DBD1 differ only by the cyclisation of DBD1; a process that removes αvβ6 specificity. Q2DSTD NMR demonstrates these peptides experience significantly different interactions with the integrin; FMDV contacts primarily through four residues: 6Leu, 10Leu, 12Val and 13Leu, whereas DBD1 and LAP2T1 have more widespread contacts across their sequences. Q2DSTD NMR combined two-dimensional STD with quantitation by considering the relaxation of the ligand (CRL) to provide precise ligand contact information. This study also examines the role of CRL in the Q2DSTD process and how quantitation modifies STD data and unravels epitope-mapping variability to provide precise results that differentiate interactions at the atomic level for each peptide.
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Affiliation(s)
- Jessica L Sorge
- School of Biosciences, University of Kent, Canterbury, Kent, UK.
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7
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Lawrence AD, Frank S, Newnham S, Lee MJ, Brown IR, Xue WF, Rowe ML, Mulvihill DP, Prentice MB, Howard MJ, Warren MJ. Solution structure of a bacterial microcompartment targeting peptide and its application in the construction of an ethanol bioreactor. ACS Synth Biol 2014; 3:454-465. [PMID: 24933391 DOI: 10.1021/sb4001118] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Targeting of proteins to bacterial microcompartments (BMCs) is mediated by an 18-amino-acid peptide sequence. Herein, we report the solution structure of the N-terminal targeting peptide (P18) of PduP, the aldehyde dehydrogenase associated with the 1,2-propanediol utilization metabolosome from Citrobacter freundii. The solution structure reveals the peptide to have a well-defined helical conformation along its whole length. Saturation transfer difference and transferred NOE NMR has highlighted the observed interaction surface on the peptide with its main interacting shell protein, PduK. By tagging both a pyruvate decarboxylase and an alcohol dehydrogenase with targeting peptides, it has been possible to direct these enzymes to empty BMCs in vivo and to generate an ethanol bioreactor. Not only are the purified, redesigned BMCs able to transform pyruvate into ethanol efficiently, but the strains containing the modified BMCs produce elevated levels of alcohol.
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Affiliation(s)
- Andrew D. Lawrence
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Stefanie Frank
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Sarah Newnham
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Matthew J. Lee
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Ian R. Brown
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Wei-Feng Xue
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Michelle L. Rowe
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Daniel P. Mulvihill
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | | | - Mark J. Howard
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
| | - Martin J. Warren
- School
of Biosciences, University of Kent, Giles Lane, Canterbury, Kent CT2 7NJ, U.K
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8
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Kövér KE, Batta G. NMR investigation of disulfide containing peptides and proteins. AMINO ACIDS, PEPTIDES AND PROTEINS 2013:37-59. [DOI: 10.1039/9781849737081-00037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Peptides and proteins with disulfide bonds are abundant in all kingdoms and play essential role in many biological events. Because small disulfide-rich peptides (proteins) are usually difficult to crystallize, nuclear magnetic resonance (NMR) is by far one of the most powerful techniques for the determination of their solution structure. Besides the “static” three-dimensional structure, NMR has unique opportunities to acquire additional information about molecular dynamics and folding at atomic resolution. Nowadays it is becoming increasingly evident, that “excited”, “disordered” or “fuzzy” protein states may exhibit biological function and disulfide proteins are also promising targets for such studies. In this short two-three years overview those disulfide peptides and proteins were cited from the literature that were studied by NMR. Though we may have missed some, their structural diversity and complexity as well as their wide repertoire of biological functions is impressive. We emphasised especially antimicrobial peptides and peptide based toxins in addition to some biologically important other structures. Besides the general NMR methods we reviewed some contemporary techniques suitable for disclosing the peculiar properties of disulfide bonds. Interesting dynamics and folding studies of disulfide proteins were also mentioned. It is important to disclose the essential structure, dynamics, function aspects of disulfide proteins since this aids the design of new compounds with improved activity and reduced toxicity. Undoubtedly, NMR has the potential to accelerate the development of new disulfide peptides/proteins with pharmacological activity.
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