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Koszela J, Pham NT, Shave S, St-Cyr D, Ceccarelli DF, Orlicky S, Marinier A, Sicheri F, Tyers M, Auer M. A Novel Confocal Scanning Protein-Protein Interaction Assay (PPI-CONA) Reveals Exceptional Selectivity and Specificity of CC0651, a Small Molecule Binding Enhancer of the Weak Interaction between the E2 Ubiquitin-Conjugating Enzyme CDC34A and Ubiquitin. Bioconjug Chem 2024. [PMID: 39167708 DOI: 10.1021/acs.bioconjchem.4c00345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Protein-protein interactions (PPIs) are some of the most challenging target classes in drug discovery. Highly sensitive detection techniques are required for the identification of chemical modulators of PPIs. Here, we introduce PPI confocal nanoscanning (PPI-CONA), a miniaturized, microbead based high-resolution fluorescence imaging assay. We demonstrate the capabilities of PPI-CONA by detecting low affinity ternary complex formation between the human CDC34A ubiquitin-conjugating (E2) enzyme, ubiquitin, and CC0651, a small molecule enhancer of the CDC34A-ubiquitin interaction. We further exemplify PPI-CONA with an E2 enzyme binding study on CC0651 and a CDC34A binding specificity study of a series of CC0651 analogues. Our results indicate that CC0651 is highly selective toward CDC34A. We further demonstrate how PPI-CONA can be applied to screening very low affinity interactions. PPI-CONA holds potential for high-throughput screening for modulators of PPI targets and characterization of their affinity, specificity, and selectivity.
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Affiliation(s)
- Joanna Koszela
- School of Molecular Biosciences, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Nhan T Pham
- School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland EH9 3BF, U.K
- College of Medicine and Veterinary Medicine, Institute for Regeneration and Repair, University of Edinburgh, 4-5 Little France Drive, Edinburgh EH16 4UU, U.K
| | - Steven Shave
- School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland EH9 3BF, U.K
- Edinburgh Cancer Research, Cancer Research UK Scotland Centre, Institute of Genetics and Cancer, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, U.K
| | - Daniel St-Cyr
- X-Chem Inc., Montréal, Québec H4S 1Z9, Canada
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Québec H3T 1J4, Canada
| | - Derek F Ceccarelli
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
| | - Steven Orlicky
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
| | - Anne Marinier
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Québec H3T 1J4, Canada
| | - Frank Sicheri
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
| | - Mike Tyers
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Québec H3T 1J4, Canada
- Program in Molecular Medicine, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Manfred Auer
- School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland EH9 3BF, U.K
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2
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Ren G, Zhang Y, Liu J, Cheng W, Wu D, Han M, Zeng Y, Zhao X, Hu L, Zeng M, Gurram RK, Hu X, Zhou B, Hou Z, Zhu J, Jin W, Zhong C. Decreased GATA3 levels cause changed mouse cutaneous innate lymphoid cell fate, facilitating hair follicle recycling. Dev Cell 2024; 59:1809-1823.e6. [PMID: 38723629 PMCID: PMC11265981 DOI: 10.1016/j.devcel.2024.04.015] [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: 08/15/2023] [Revised: 02/08/2024] [Accepted: 04/16/2024] [Indexed: 07/25/2024]
Abstract
In mice, skin-resident type 2 innate lymphoid cells (ILC2s) exhibit some ILC3-like characteristics. However, the underlying mechanism remains elusive. Here, we observed lower expression of the ILC2 master regulator GATA3 specifically in cutaneous ILC2s (cILC2s) compared with canonical ILC2s, in line with its functionally divergent role in transcriptional control in cILC2s. Decreased levels of GATA3 enabled the expansion of RORγt fate-mapped (RORγtfm+) cILC2s after postnatal days, displaying certain similarities to ILC3s. Single-cell trajectory analysis showed a sequential promotion of the RORγtfm+ cILC2 divergency by RORγt and GATA3. Notably, during hair follicle recycling, these RORγtfm+ cILC2s accumulated around the hair follicle dermal papilla (DP) region to facilitate the process. Mechanistically, we found that GATA3-mediated integrin α3β1 upregulation on RORγtfm+ cILC2s was required for their positioning around the DP. Overall, our study demonstrates a distinct regulatory role of GATA3 in cILC2s, particularly in promoting the divergence of RORγtfm+ cILC2s to facilitate hair follicle recycling.
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Affiliation(s)
- Guanqun Ren
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Yime Zhang
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Jiamin Liu
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Wenwen Cheng
- Department of Biology, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Di Wu
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China; Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Mengwei Han
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Yanyu Zeng
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Xingyu Zhao
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Luni Hu
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Min Zeng
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China; Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Rama Krishna Gurram
- Molecular and Cellular Immunoregulation Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, MD 20892, USA
| | - Xiaole Hu
- Department of Biology, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Bo Zhou
- Department of Biology, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Zhiyuan Hou
- Institute of Systems Biomedicine, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China
| | - Jinfang Zhu
- Molecular and Cellular Immunoregulation Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, MD 20892, USA
| | - Wenfei Jin
- CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, China.
| | - Chao Zhong
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Medicine Innovation Center for Fundamental Researches on Major Immunology-Related Diseases, Peking University, Beijing 100191, China.
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3
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Kriegesmann J, Schlatzer T, Che K, Altdorf C, Huhmann S, Kählig H, Kurzbach D, Breinbauer R, Becker CFW. Constraining and Modifying Peptides Using Pd-Mediated Cysteine Allylation. Chembiochem 2023; 24:e202300098. [PMID: 36917494 PMCID: PMC10947015 DOI: 10.1002/cbic.202300098] [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: 02/06/2023] [Revised: 03/14/2023] [Accepted: 03/14/2023] [Indexed: 03/16/2023]
Abstract
Over the past decades, several strategies for inducing and stabilizing secondary structure formation in peptides have been developed to increase their proteolytic stability and their binding affinity to specific interaction partners. Here, we report how our recently introduced chemoselective Pd-catalyzed cysteine allylation reaction can be extended to stapling and how the resulting alkene-containing staples themselves can be further modified to introduce additional probes into such stabilized peptides. The latter is demonstrated by introducing a fluorophore as well as a PEG moiety into different stapled peptides using bioorthogonal thiol-ene and Diels-Alder reactions. Furthermore, we investigated structural implications of our allyl staples when used to replace conformationally relevant disulfide bridges. To this end, we chose a selective binder of integrin α3 β1 (LXY3), which is only active in its cyclic disulfide form. We replaced the disulfide bridge by different stapling reagents in order to increase stability and binding affinity towards integrin α3 β1 .
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Affiliation(s)
- Julia Kriegesmann
- Institute of Biological ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
| | - Thomas Schlatzer
- Institute of Organic ChemistryGraz University of Technology8010GrazAustria
| | - Kateryna Che
- Institute of Biological ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
| | - Claudia Altdorf
- Syntab Therapeutics GmbHPauwelstrasse 17post code?AachenGermany
| | - Susanne Huhmann
- Institute of Biological ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
| | - Hanspeter Kählig
- Department of Organic ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
| | - Dennis Kurzbach
- Institute of Biological ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
| | - Rolf Breinbauer
- Institute of Organic ChemistryGraz University of Technology8010GrazAustria
| | - Christian F. W. Becker
- Institute of Biological ChemistryFaculty of ChemistryUniversity of Vienna1090ViennaAustria
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4
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Yu X, Pan B, Zhao C, Shorty D, Solano LN, Sun G, Liu R, Lam KS. Discovery of Peptidic Ligands against the SARS-CoV-2 Spike Protein and Their Use in the Development of a Highly Sensitive Personal Use Colorimetric COVID-19 Biosensor. ACS Sens 2023; 8:2159-2168. [PMID: 37253267 PMCID: PMC10255569 DOI: 10.1021/acssensors.2c02386] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In addition to efficacious vaccines and antiviral therapeutics, reliable and flexible in-home personal use diagnostics for the detection of viral antigens are needed for effective control of the COVID-19 pandemic. Despite the approval of several PCR-based and affinity-based in-home COVID-19 testing kits, many of them suffer from problems such as a high false-negative rate, long waiting time, and short storage period. Using the enabling one-bead-one-compound (OBOC) combinatorial technology, several peptidic ligands with a nanomolar binding affinity toward the SARS-CoV-2 spike protein (S-protein) were successfully discovered. Taking advantage of the high surface area of porous nanofibers, immobilization of these ligands on nanofibrous membranes allows the development of personal use sensors that can achieve low nanomolar sensitivity in the detection of the S-protein in saliva. This simple biosensor employing naked-eye reading exhibits detection sensitivity comparable to some of the current FDA-approved home detection kits. Furthermore, the ligand used in the biosensor was found to detect the S-protein derived from both the original strain and the Delta variant. The workflow reported here may enable us to rapidly respond to the development of home-based biosensors against future viral outbreaks.
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Affiliation(s)
- Xingjian Yu
- Department
of Biochemistry & Molecular Medicine, University of California, Sacramento, Sacramento, California 95817, United States
- Department
of Chemistry, University of California,
Sacramento, Sacramento, California 95616, United States
| | - Bofeng Pan
- Department
of Biological and Agricultural Engineering, University of California, Davis, Davis, California 95616, United States
| | - Cunyi Zhao
- Department
of Biological and Agricultural Engineering, University of California, Davis, Davis, California 95616, United States
| | - Diedra Shorty
- Department
of Biochemistry & Molecular Medicine, University of California, Sacramento, Sacramento, California 95817, United States
- Department
of Chemistry, University of California,
Sacramento, Sacramento, California 95616, United States
| | - Lucas N. Solano
- Department
of Biochemistry & Molecular Medicine, University of California, Sacramento, Sacramento, California 95817, United States
| | - Gang Sun
- Department
of Biological and Agricultural Engineering, University of California, Davis, Davis, California 95616, United States
| | - Ruiwu Liu
- Department
of Biochemistry & Molecular Medicine, University of California, Sacramento, Sacramento, California 95817, United States
| | - Kit S. Lam
- Department
of Biochemistry & Molecular Medicine, University of California, Sacramento, Sacramento, California 95817, United States
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5
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Tang Y, Zheng X, Gao T. Orthogonal Combinatorial Raman Codes Enable Rapid High-Throughput-Out Library Screening of Cell-Targeting Ligands. RESEARCH (WASHINGTON, D.C.) 2023; 6:0136. [PMID: 37214198 PMCID: PMC10198463 DOI: 10.34133/research.0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 04/14/2023] [Indexed: 05/24/2023]
Abstract
High-throughput assays play an important role in the fields of drug discovery, genetic analysis, and clinical diagnostics. Although super-capacity coding strategies may facilitate labeling and detecting large numbers of targets in a single assay, practically, the constructed large-capacity codes have to be decoded with complicated procedures or are lack of survivability under the required reaction conditions. This challenge results in either inaccurate or insufficient decoding outputs. Here, we identified chemical-resistant Raman compounds to build a combinatorial coding system for the high-throughput screening of cell-targeting ligands from a focused 8-mer cyclic peptide library. The accurate in situ decoding results proved the signal, synthetic, and functional orthogonality for this Raman coding strategy. The orthogonal Raman codes allowed for a rapid identification of 63 positive hits at one time, evidencing a high-throughput-out capability in the screening process. We anticipate this orthogonal Raman coding strategy being generalized to enable efficient high-throughput-out screening of more useful ligands for cell targeting and drug discovery.
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6
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Basu A, Sarkar A, Bandyopadhyay S, Maulik U. In silico strategies to identify protein-protein interaction modulator in cell-to-cell transmission of SARS CoV2. Transbound Emerg Dis 2022; 69:3896-3905. [PMID: 36379049 DOI: 10.1111/tbed.14760] [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: 12/15/2021] [Revised: 07/08/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022]
Abstract
RNA sequence data from SARS CoV2 patients helps to construct a gene network related to this disease. A detailed analysis of the human host response to SARS CoV2 with expression profiling by high-throughput sequencing has been accomplished with primary human lung epithelial cell lines. Using this data, the clustered gene annotation and gene network construction are performed with the help of the String database. Among the four clusters identified, only 1 with 44 genes could be annotated. Interestingly, this corresponded to basal cells with p = 1.37e - 05, which is relevant for respiratory tract infection. Functional enrichment analysis of genes present in the gene network has been completed using the String database and the Network Analyst tool. Among three types of cell-cell communication, only the anchoring junction between the basal cell membrane and the basal lamina in the host cell is involved in the virus transmission. In this junction point, a hemidesmosome structure plays a vital role in virus spread from one cell to basal lamina in the respiratory tract. In this protein complex structure, different integrin protein molecules of the host cell are used to promote the spread of virus infection into the extracellular matrix. So, small molecular blockers of different anchoring junction proteins, such as integrin alpha 3, integrin beta 1, can provide efficient protection against this deadly viral disease. ORF8 from SARS CoV2 virus can interact with both integrin proteins of human host. By using molecular docking technique, a ternary complex of these three proteins is modelled. Several oligopeptides are predicted as modulators for this ternary complex. In silico analysis of these modulators is very important to develop novel therapeutics for the treatment of SARS CoV2.
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Affiliation(s)
- Anamika Basu
- Department of Biochemistry, Gurudas College, Kolkata, India
| | - Anasua Sarkar
- Computer Science and Engineering Department, Jadavpur University, Kolkata, India
| | | | - Ujjwal Maulik
- Computer Science and Engineering Department, Jadavpur University, Kolkata, India
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7
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Vondrakova J, Frolikova M, Ded L, Cerny J, Postlerova P, Palenikova V, Simonik O, Nahacka Z, Basus K, Valaskova E, Machan R, Pacey A, Holubcova Z, Koubek P, Ezrova Z, Park S, Liu R, Partha R, Clark N, Neuzil J, Ikawa M, Erickson K, Lam KS, Moore H, Komrskova K. MAIA, Fc receptor-like 3, supersedes JUNO as IZUMO1 receptor during human fertilization. SCIENCE ADVANCES 2022; 8:eabn0047. [PMID: 36070373 PMCID: PMC9451160 DOI: 10.1126/sciadv.abn0047] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 07/23/2022] [Indexed: 05/17/2023]
Abstract
Gamete fusion is a critical event of mammalian fertilization. A random one-bead one-compound combinatorial peptide library represented synthetic human egg mimics and identified a previously unidentified ligand as Fc receptor-like 3, named MAIA after the mythological goddess intertwined with JUNO. This immunoglobulin super family receptor was expressed on human oolemma and played a major role during sperm-egg adhesion and fusion. MAIA forms a highly stable interaction with the known IZUMO1/JUNO sperm-egg complex, permitting specific gamete fusion. The complexity of the MAIA isotype may offer a cryptic sexual selection mechanism to avoid genetic incompatibility and achieve favorable fitness outcomes.
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Affiliation(s)
- Jana Vondrakova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Michaela Frolikova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Lukas Ded
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Jiri Cerny
- Laboratory of Structural Bioinformatics of Proteins, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Pavla Postlerova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- Department of Veterinary Sciences, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 00 Prague, Czech Republic
| | - Veronika Palenikova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Ondrej Simonik
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Zuzana Nahacka
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Krystof Basus
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Eliska Valaskova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Radek Machan
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Allan Pacey
- Department of Oncology and Metabolism, University of Sheffield, Medical School, Sheffield S10 2RX, UK
| | - Zuzana Holubcova
- Reprofit International, Clinic of Reproductive Medicine, Brno, Czech Republic
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Pavel Koubek
- ProCrea Swiss IVF Center, Prague, Czech Republic
| | - Zuzana Ezrova
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Soojin Park
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Raghavendran Partha
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nathan Clark
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Jiri Neuzil
- Laboratory of Molecular Therapy, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- School of Pharmacy and Medical Science, Griffith University, Parklands Avenue, Southport, Qld 4222, Australia
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Kent Erickson
- Department of Cell Biology and Human Anatomy, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Kit S. Lam
- Department of Biochemistry and Molecular Medicine, University of California, Davis, School of Medicine, Davis, CA, USA
| | - Harry Moore
- Centre for Stem Cell Biology, University of Sheffield, Sheffield S10 2TN, UK
| | - Katerina Komrskova
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 128 44 Prague, Czech Republic
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8
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Bose D, Roy L, Chatterjee S. Peptide therapeutics in the management of metastatic cancers. RSC Adv 2022; 12:21353-21373. [PMID: 35975072 PMCID: PMC9345020 DOI: 10.1039/d2ra02062a] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/26/2022] [Indexed: 11/21/2022] Open
Abstract
Cancer remains a leading health concern threatening lives of millions of patients worldwide. Peptide-based drugs provide a valuable alternative to chemotherapeutics as they are highly specific, cheap, less toxic and easier to synthesize compared to other drugs. In this review, we have discussed various modes in which peptides are being used to curb cancer. Our review highlights specially the various anti-metastatic peptide-based agents developed by targeting a plethora of cellular factors. Herein we have given a special focus on integrins as targets for peptide drugs, as these molecules play key roles in metastatic progression. The review also discusses use of peptides as anti-cancer vaccines and their efficiency as drug-delivery tools. We hope this work will give the reader a clear idea of the mechanisms of peptide-based anti-cancer therapeutics and encourage the development of superior drugs in the future.
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Affiliation(s)
- Debopriya Bose
- Department of Biophysics Bose Institute Unified Academic Campus EN 80, Sector V, Bidhan Nagar Kolkata 700091 WB India
| | - Laboni Roy
- Department of Biophysics Bose Institute Unified Academic Campus EN 80, Sector V, Bidhan Nagar Kolkata 700091 WB India
| | - Subhrangsu Chatterjee
- Department of Biophysics Bose Institute Unified Academic Campus EN 80, Sector V, Bidhan Nagar Kolkata 700091 WB India
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9
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Samec T, Boulos J, Gilmore S, Hazelton A, Alexander-Bryant A. Peptide-based delivery of therapeutics in cancer treatment. Mater Today Bio 2022; 14:100248. [PMID: 35434595 PMCID: PMC9010702 DOI: 10.1016/j.mtbio.2022.100248] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/14/2022] [Accepted: 03/27/2022] [Indexed: 11/09/2022] Open
Abstract
Current delivery strategies for cancer therapeutics commonly cause significant systemic side effects due to required high doses of therapeutic, inefficient cellular uptake of drug, and poor cell selectivity. Peptide-based delivery systems have shown the ability to alleviate these issues and can significantly enhance therapeutic loading, delivery, and cancer targetability. Peptide systems can be tailor-made for specific cancer applications. This review describes three peptide classes, targeting, cell penetrating, and fusogenic peptides, as stand-alone nanoparticle systems, conjugations to nanoparticle systems, or as the therapeutic modality. Peptide nanoparticle design, characteristics, and applications are discussed as well as peptide applications in the clinical space.
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Affiliation(s)
- Timothy Samec
- Nanobiotechnology Laboratory, Clemson University, Department of Bioengineering, Clemson, SC, USA
| | - Jessica Boulos
- Nanobiotechnology Laboratory, Clemson University, Department of Bioengineering, Clemson, SC, USA
| | - Serena Gilmore
- Nanobiotechnology Laboratory, Clemson University, Department of Bioengineering, Clemson, SC, USA
| | - Anthony Hazelton
- Nanobiotechnology Laboratory, Clemson University, Department of Bioengineering, Clemson, SC, USA
| | - Angela Alexander-Bryant
- Nanobiotechnology Laboratory, Clemson University, Department of Bioengineering, Clemson, SC, USA
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10
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An in vivo selection-derived d-peptide for engineering erythrocyte-binding antigens that promote immune tolerance. Proc Natl Acad Sci U S A 2021; 118:2101596118. [PMID: 34417313 DOI: 10.1073/pnas.2101596118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
When displayed on erythrocytes, peptides and proteins can drive antigen-specific immune tolerance. Here, we investigated a straightforward approach based on erythrocyte binding to promote antigen-specific tolerance to both peptides and proteins. We first identified a robust erythrocyte-binding ligand. A pool of one million fully d-chiral peptides was injected into mice, blood cells were isolated, and ligands enriched on these cells were identified using nano-liquid chromatography-tandem mass spectrometry. One round of selection yielded a murine erythrocyte-binding ligand with an 80 nM apparent dissociation constant, K d We modified an 83-kDa bacterial protein and a peptide antigen derived from ovalbumin (OVA) with the identified erythrocyte-binding ligand. An administration of the engineered bacterial protein led to decreased protein-specific antibodies in mice. Similarly, mice given the engineered OVA-derived peptide had decreased inflammatory anti-OVA CD8+ T cell responses. These findings suggest that our tolerance-induction strategy is applicable to both peptide and protein antigens and that our in vivo selection strategy can be used for de novo discovery of robust erythrocyte-binding ligands.
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11
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Hao D, Liu R, Gao K, He C, He S, Zhao C, Sun G, Farmer DL, Panitch A, Lam KS, Wang A. Developing an Injectable Nanofibrous Extracellular Matrix Hydrogel With an Integrin αvβ3 Ligand to Improve Endothelial Cell Survival, Engraftment and Vascularization. Front Bioeng Biotechnol 2020; 8:890. [PMID: 32850742 PMCID: PMC7403189 DOI: 10.3389/fbioe.2020.00890] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 07/10/2020] [Indexed: 01/01/2023] Open
Abstract
Endothelial cell (EC) transplantation via injectable collagen hydrogel has received much attention as a potential treatment for various vascular diseases. However, the therapeutic effect of transplanted ECs is limited by their poor viability, which partially occurs as a result of cellular apoptosis triggered by the insufficient cell-extracellular matrix (ECM) engagement. Integrin binding to the ECM is crucial for cell anchorage to the surrounding matrix, cell spreading and migration, and further activation of intracellular signaling pathways. Although collagen contains several different types of integrin binding sites, it still lacks sufficient specific binding sites for ECs. Previously, using one-bead one-compound (OBOC) combinatorial technology, we identified LXW7, an integrin αvβ3 ligand, which possessed a strong binding affinity to and enhanced functionality of ECs. In this study, to improve the EC-matrix interaction, we developed an approach to molecularly conjugate LXW7 to the collagen backbone, via a collagen binding peptide SILY, in order to increase EC specific integrin binding sites on the collagen hydrogel. Results showed that in the in vitro 2-dimensional (2D) culture model, the LXW7-treated collagen surface significantly improved EC attachment and survival and decreased caspase 3 activity in an ischemic-mimicking environment. In the in vitro 3-dimensional (3D) culture model, LXW7-modified collagen hydrogel significantly improved EC spreading, proliferation, and survival. In a mouse subcutaneous implantation model, LXW7-modified collagen hydrogel improved the engraftment of transplanted ECs and supported ECs to form vascular network structures. Therefore, LXW7-functionalized collagen hydrogel has shown promising potential to improve vascularization in tissue regeneration and may be used as a novel tool for EC delivery and the treatment of vascular diseases.
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Affiliation(s)
- Dake Hao
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, United States
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Kewa Gao
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, United States
| | - Chuanchao He
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Siqi He
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, United States
| | - Cunyi Zhao
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, CA, United States
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, CA, United States
| | - Diana L. Farmer
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, United States
| | - Alyssa Panitch
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Kit S. Lam
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Aijun Wang
- Department of Surgery, School of Medicine, University of California, Davis, Sacramento, CA, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, United States
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
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12
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Kurmi BD, Patel P, Paliwal R, Paliwal SR. Molecular approaches for targeted drug delivery towards cancer: A concise review with respect to nanotechnology. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101682] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Sandomenico A, Caporale A, Doti N, Cross S, Cruciani G, Chambery A, De Falco S, Ruvo M. Synthetic Peptide Libraries: From Random Mixtures to In Vivo Testing. Curr Med Chem 2020; 27:997-1016. [PMID: 30009695 DOI: 10.2174/0929867325666180716110833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 06/22/2018] [Accepted: 06/29/2018] [Indexed: 01/13/2023]
Abstract
Combinatorially generated molecular repertoires have been largely used to identify novel bioactive compounds. Ever more sophisticated technological solutions have been proposed to simplify and speed up such process, expanding the chemical diversity space and increasing the prospect to select new molecular entities with specific and potent activities against targets of therapeutic relevance. In this context, random mixtures of oligomeric peptides were originally used and since 25 years they represent a continuous source of bioactive molecules with potencies ranging from the sub-nM to microM concentration. Synthetic peptide libraries are still employed as starting "synthetic broths" of structurally and chemically diversified molecular fragments from which lead compounds can be extracted and further modified. Thousands of studies have been reported describing the application of combinatorial mixtures of synthetic peptides with different complexity and engrafted on diverse structural scaffolds for the identification of new compounds which have been further developed and also tested in in vivo models of relevant diseases. We briefly review some of the most used methodologies for library preparation and screening and the most recent case studies appeared in the literature where compounds have reached at least in vivo testing in animal or similar models. Recent technological advancements in biotechnology, engineering and computer science have suggested new options to facilitate the discovery of new bioactive peptides. In this instance, we anticipate here a new approach for the design of simple but focused tripeptide libraries against druggable cavities of therapeutic targets and its complementation with existing approaches.
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Affiliation(s)
- Annamaria Sandomenico
- Istituto di Biostrutture e Bioimmagini del CNR and CIRPeB, Universita Federico II di Napoli, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Andrea Caporale
- Istituto di Biostrutture e Bioimmagini del CNR and CIRPeB, Universita Federico II di Napoli, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Nunzianna Doti
- Istituto di Biostrutture e Bioimmagini del CNR and CIRPeB, Universita Federico II di Napoli, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Simon Cross
- Molecular Discovery Ltd, Unit 501 Centennial Park, Centennial Avenue Elstree, Borehamwood, Hertfordshire WD6 3FG, United Kingdom
| | - Gabriele Cruciani
- Molecular Discovery Ltd, Unit 501 Centennial Park, Centennial Avenue Elstree, Borehamwood, Hertfordshire WD6 3FG, United Kingdom.,Dipartimento di Chimica, Biologia e Biotecnologia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Angela Chambery
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "Luigi Vanvitelli", via Vivaldi, 43, 81100 Caserta, Italy
| | - Sandro De Falco
- Istituto di Genetica e Biofisica del CNR, via Pietro Castellino, 111, 80131, Napoli, Italy
| | - Menotti Ruvo
- Istituto di Biostrutture e Bioimmagini del CNR and CIRPeB, Universita Federico II di Napoli, via Mezzocannone, 16, 80134 Napoli, Italy
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14
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Murrell E, Luyt LG. Incorporation of Fluorine into an OBOC Peptide Library by Copper-Free Click Chemistry toward the Discovery of PET Imaging Agents. ACS COMBINATORIAL SCIENCE 2020; 22:109-113. [PMID: 32011850 DOI: 10.1021/acscombsci.9b00146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A one-bead one-compound (OBOC) library of peptide-based imaging agents was developed where a 19F-containing moiety was added onto the N-terminus of octamer peptides through copper-free click chemistry prior to screening of the library. This created a library of complete imaging agents that was screened against CXCR4, a receptor of interest for cancer imaging. The screen directly resulted in the discovery of a peptide-based imaging agent with an IC50 of 138 μM. This proof-of-concept study describes a new type of OBOC peptide library design, where hits discovered from screening can be easily translated into their fluorine-18 counterpart for PET imaging without loss of affinity.
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Affiliation(s)
- Emily Murrell
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - Leonard G. Luyt
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
- Departments of Oncology and Medical Imaging, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
- London Regional Cancer Program, Lawson Health Research Institute, 790 Commissioners Road East, London, Ontario N6A 4L6, Canada
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15
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Hao D, Ma B, He C, Liu R, Farmer DL, Lam KS, Wang A. Surface modification of polymeric electrospun scaffolds via a potent and high-affinity integrin α4β1 ligand improved the adhesion, spreading and survival of human chorionic villus-derived mesenchymal stem cells: a new insight for fetal tissue engineering. J Mater Chem B 2020; 8:1649-1659. [PMID: 32011618 PMCID: PMC7353926 DOI: 10.1039/c9tb02309g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cell-biomaterial interactions are primarily governed by cell adhesion, which arises from the binding of cellular integrins to the extracellular matrix (ECM). Integrins drive the assembly of focal contacts that serve as mechanotransducers and signaling nexuses for stem cells, for example integrin α4β1 plays pivotal roles in regulating mesenchymal stem cell (MSC) homing, adhesion, migration and differentiation. The strategy to control the integrin-mediated cell adhesion to bioinspired, ECM-mimicking materials is essential to regulate cell functions and tissue regeneration. Previously, using one-bead one-compound (OBOC) combinatorial technology, we discovered that LLP2A was a high-affinity peptidomimetic ligand (IC50 = 2 pM) against integrin α4β1. In this study, we identified that LLP2A had a strong binding to human early gestation chorionic villi-derived MSCs (CV-MSCs) via integrin α4β1. To improve CV-MSC seeding, expansion and delivery for regenerative applications, we constructed artificial scaffolds simulating the structure of the native ECM by immobilizing LLP2A onto the scaffold surface as cell adhesion sites. LLP2A modification significantly enhanced CV-MSC adhesion, spreading and viability on the polymeric scaffolds via regulating signaling pathways including phosphorylation of focal adhesion kinase (FAK), and AKT, NF-kB and Caspase 9. In addition, we also demonstrated that LLP2A had strong binding to MSCs of other sources, such as bone marrow-derived mesenchymal stem cells (BM-MSCs) and adipose tissue-derived mesenchymal stem cells (AT-MSCs). Therefore, LLP2A and its derivatives not only hold great promise for improving CV-MSC-mediated treatment of fetal diseases, but they can also be widely applied to functionalize various biological and medical materials, which are in need of MSC recruitment, enrichment and survival, for regenerative medicine applications.
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Affiliation(s)
- Dake Hao
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA. and Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA 95817, USA
| | - Bowen Ma
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA.
| | - Chuanchao He
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA.
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Diana L Farmer
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA. and Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA 95817, USA
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Aijun Wang
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA. and Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA 95817, USA and Department of Biomedical Engineering, University of California Davis, Davis, CA 95616, USA
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16
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Sikder S, Gote V, Alshamrani M, Sicotte J, Pal D. Long-term delivery of protein and peptide therapeutics for cancer therapies. Expert Opin Drug Deliv 2019; 16:1113-1131. [DOI: 10.1080/17425247.2019.1662785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Sadia Sikder
- Division of Pharmacological & Pharmaceutical Sciences, University of Missouri Kansas City, Kansas, MO, USA
| | - Vrinda Gote
- Division of Pharmacological & Pharmaceutical Sciences, University of Missouri Kansas City, Kansas, MO, USA
| | - Meshal Alshamrani
- Division of Pharmacological & Pharmaceutical Sciences, University of Missouri Kansas City, Kansas, MO, USA
| | - Jeff Sicotte
- Division of Pharmacological & Pharmaceutical Sciences, University of Missouri Kansas City, Kansas, MO, USA
| | - Dhananjay Pal
- Division of Pharmacological & Pharmaceutical Sciences, University of Missouri Kansas City, Kansas, MO, USA
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17
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Yang F, Xiao W, Liu Y, Liu R, Kramer R, Li X, Ajena Y, Baehr CM, Rojalin T, Zhang H, Lam KS. One-bead one-compound combinatorial library derived targeting ligands for detection and treatment of oral squamous cancer. Oncotarget 2019; 10:5468-5479. [PMID: 31534631 PMCID: PMC6739215 DOI: 10.18632/oncotarget.27189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 08/12/2019] [Indexed: 12/12/2022] Open
Abstract
Oral squamous cancers (OSC) are hallmarked by poor prognosis, delayed clinical detection, and a lack of defined, characteristic biomarkers. By screening combinatorial one-bead one-compound (OBOC) peptide libraries against oral squamous cancer cell lines, two cyclic peptide ligands, LLY12 and LLY13 were previously identified. These ligands are capable of specific binding to the oral cancer cell lines (MOK-101, HSC-3, SCC-4 and SCC-10a) but not non-cancerous keratinocytes, leukocytes, fibroblast, and endothelial cells. These two peptides were synthesized and evaluated for their binding property, cytotoxicity and cell permeability. In vitro studies indicate that both LLY12 and LLY13 were able to bind to oral cancer cells with high specificity but did not show any cytotoxicity against human keratinocytes. Biotinylated LLY13, in complex with streptavidin-alexa488 was taken up by live oral cancer cells, thus rendering it as an excellent candidate vehicle for efficient delivery of drug loaded-nanoparticles. In vivo and ex vivo near infra-red fluorescence imaging studies confirmed the in vivo targeting efficiency and specificity of LLY13 in oral cancer orthotopic murine xenograft model. In vivo studies also showed that LLY13 was able to accumulate in the OSC tumors and demarcate the tumor margins in orthotopic xenograft model. Together, our data supports LLY13 as a promising theranostic agent against OSC.
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Affiliation(s)
- Fan Yang
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Yanlei Liu
- Department of Pathology, University of California Davis Medical Center, Sacramento, CA, USA
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Randall Kramer
- Department of Cell and Tissue Biology, University of California, San Francisco, CA, USA
| | - Xiaocen Li
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Yousif Ajena
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Christopher M Baehr
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Tatu Rojalin
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Hongyong Zhang
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA, USA
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18
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Conibear AC, Thewes K, Groysbeck N, Becker CFW. Multifunctional Scaffolds for Assembling Cancer-Targeting Immune Stimulators Using Chemoselective Ligations. Front Chem 2019; 7:113. [PMID: 30895175 PMCID: PMC6414710 DOI: 10.3389/fchem.2019.00113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/12/2019] [Indexed: 01/09/2023] Open
Abstract
Chemoselective ligations allow chemical biologists to functionalise proteins and peptides for biomedical applications and to probe biological processes. Coupled with solid phase peptide synthesis, chemoselective ligations enable not only the design of homogeneous proteins and peptides with desired natural and unnatural modifications in site-specific locations but also the design of new peptide and protein topologies. Although several well-established ligations are available, each method has its own advantages and disadvantages and they are seldom used in combination. Here we have applied copper-catalyzed azide-alkyne “click,” oxime, maleimide, and native chemical ligations to develop a modular synthesis of branched peptide and polymer constructs that act as cancer-targeting immune system engagers (ISErs) and functionalised them for detection in biological systems. We also note some potential advantages and pitfalls of these chemoselective ligations to consider when designing orthogonal ligation strategies. The modular synthesis and functionalization of ISErs facilitates optimisation of their activity and mechanism of action as potential cancer immunotherapies.
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Affiliation(s)
- Anne C Conibear
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
| | - Karine Thewes
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
| | - Nadja Groysbeck
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
| | - Christian F W Becker
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
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19
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de Sousa Cunha F, Dos Santos Pereira LN, de Costa E Silva TP, de Sousa Luz RA, Nogueira Mendes A. Development of nanoparticulate systems with action in breast and ovarian cancer: nanotheragnostics. J Drug Target 2018; 27:732-741. [PMID: 30207742 DOI: 10.1080/1061186x.2018.1523418] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The use of nanoparticulate systems with action in breast and ovarian cancer has been highlighted in recent years as an alternative to increasing the therapeutic index of conventional anticancer drugs. Thus, nanoparticles have advantageous characteristics in the treatment of cancer. Several nanocarriers of drugs and nanoparticles are described in the literature. The pharmacokinetics of the drugs can be modified by the use of nanocarriers, which in turn facilitate the specific delivery of the drug to the tumour cell. Therefore, the present work is a review that examines some nanosystems with nanoparticles for action in the treatment of breast cancer and ovarian cancer.
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Affiliation(s)
- Fabiana de Sousa Cunha
- a Departamento de Química, Campus Poeta Torquato Neto , Universidade Estadual do Piauí , Teresina , Brazil
| | - Laise Nayra Dos Santos Pereira
- b Departamento de Química, Centro de Ciências da Natureza , Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga , Teresina , Brazil
| | - Thâmara Pryscilla de Costa E Silva
- b Departamento de Química, Centro de Ciências da Natureza , Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga , Teresina , Brazil
| | - Roberto Alves de Sousa Luz
- b Departamento de Química, Centro de Ciências da Natureza , Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga , Teresina , Brazil
| | - Anderson Nogueira Mendes
- b Departamento de Química, Centro de Ciências da Natureza , Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga , Teresina , Brazil.,c Departamento de Biofísica e Fisiologia, Centro de Ciências em Saúde , Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga , Teresina , Brazil
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20
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Magnetic Nanoparticles Applications for Amyloidosis Study and Detection: A Review. NANOMATERIALS 2018; 8:nano8090740. [PMID: 30231587 PMCID: PMC6164038 DOI: 10.3390/nano8090740] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/14/2018] [Accepted: 09/16/2018] [Indexed: 12/27/2022]
Abstract
Magnetic nanoparticles (MNPs) have great potential in biomedical and clinical applications because of their many unique properties. This contribution provides an overview of the MNPs mainly used in the field of amyloid diseases. The first part discusses their use in understanding the amyloid mechanisms of fibrillation, with emphasis on their ability to control aggregation of amyloidogenic proteins. The second part deals with the functionalization by various moieties of numerous MNPs’ surfaces (molecules, peptides, antibody fragments, or whole antibodies of MNPs) for the detection and the quantification of amyloid aggregates. The last part of this review focuses on the use of MNPs for magnetic-resonance-based amyloid imaging in biomedical fields, with particular attention to the application of gadolinium-based paramagnetic nanoparticles (AGuIX), which have been recently developed. Biocompatible AGuIX nanoparticles show favorable characteristics for in vivo use, such as nanometric and straightforward functionalization. Their properties have enabled their application in MRI. Here, we report that AGuIX nanoparticles grafted with the Pittsburgh compound B can actively target amyloid aggregates in the brain, beyond the blood–brain barrier, and remain the first step in observing amyloid plaques in a mouse model of Alzheimer’s disease.
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21
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Shaheen F, Nadeem-Ul-Haque M, Ahmed A, Simjee SU, Ganesan A, Jabeen A, Shah ZA, Choudhary MI. Synthesis of breast cancer targeting conjugate of temporin-SHa analog and its effect on pro- and anti-apoptotic protein expression in MCF-7 cells. Peptides 2018; 106:68-82. [PMID: 30026168 DOI: 10.1016/j.peptides.2018.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/05/2018] [Accepted: 07/05/2018] [Indexed: 12/27/2022]
Abstract
The frog natural product temporin-SHa (FLSGIVGMLGKLFamide) is a potent antimicrobial peptide, as is the analog [S3K]SHa. By solid-phase synthesis, we prepared temporin-SHa and several temporin-SHa analogs with one or more D-alanine residues incorporated. The natural product and the analog [G10a]SHa were found to be cytotoxic in mammalian cell lines and induce cell death. To achieve selectivity, we conjugated the analog [G10a]SHa with a breast cancer targeting peptide (BCTP). The resulting peptide temporin [G10a]SHa-BCTP conjugate was selectively active against the MCF-7 breast cancer cell line with no cytotoxicity in NIH-3T3 fibroblasts. Unlike the natural product or [G10a]SHa, the conjugated peptide induced apoptosis, downregulating the expression of Bcl-2 and survivin and upregulating Bax and caspase-3.
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Affiliation(s)
- Farzana Shaheen
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
| | - Muhammad Nadeem-Ul-Haque
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Aqeel Ahmed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Shabana U Simjee
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan; Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - A Ganesan
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
| | - Almas Jabeen
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Zafar Ali Shah
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - M Iqbal Choudhary
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan; Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
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22
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Li J, Carney RP, Liu R, Fan J, Zhao S, Chen Y, Lam KS, Pan T. Microfluidic Print-to-Synthesis Platform for Efficient Preparation and Screening of Combinatorial Peptide Microarrays. Anal Chem 2018; 90:5833-5840. [PMID: 29633611 DOI: 10.1021/acs.analchem.8b00371] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, we introduce a novel microfluidic combinatorial synthesis platform, referred to as Microfluidic Print-to-Synthesis (MPS), for custom high-throughput and automated synthesis of a large number of unique peptides in a microarray format. The MPS method utilizes standard Fmoc chemistry to link amino acids on a polyethylene glycol (PEG)-functionalized microdisc array. The resulting peptide microarrays permit rapid screening for interactions with molecular targets or live cells, with low nonspecific binding. Such combinatorial peptide microarrays can be reliably prepared at a spot size of 200 μm with 1 mm center-to-center distance, dimensions that require only minimal reagent consumption (less than 30 nL per spot per coupling reaction). The MPS platform has a scalable design for extended multiplexibility, allowing for 12 different building blocks and coupling reagents to be dispensed in one microfluidic cartridge in the current format, and could be further scaled up. As proof of concept for the MPS platform, we designed and constructed a focused tetrapeptide library featuring 2560 synthetic peptide sequences, capped at the N-terminus with 4-[( N'-2-methylphenyl)ureido]phenylacetic acid. We then used live human T lymphocyte Jurkat cells as a probe to screen the peptide microarrays for their interaction with α4β1 integrin overexpressed and activated on these cells. Unlike the one-bead-one-compound approach that requires subsequent decoding of positive beads, each spot in the MPS array is spatially addressable. Therefore, this platform is an ideal tool for rapid optimization of lead compounds found in nature or discovered from diverse combinatorial libraries, using either biochemical or cell-based assays.
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Affiliation(s)
- Jiannan Li
- Department of Biomedical Engineering , University of California , Davis , California 95765 , United States
| | - Randy P Carney
- Department of Biochemistry and Molecular Medicine , University of California , Davis , California 95765 , United States
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine , University of California , Davis , California 95765 , United States
| | - Jinzhen Fan
- Department of Biomedical Engineering , University of California , Davis , California 95765 , United States
| | - Siwei Zhao
- Department of Biomedical Engineering , University of California , Davis , California 95765 , United States
| | - Yan Chen
- Shenzhen Institutes of Advanced Technology , Chinese Academy of Sciences , Shenzhen 518055 , People's Republic of China
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine , University of California , Davis , California 95765 , United States
| | - Tingrui Pan
- Department of Biomedical Engineering , University of California , Davis , California 95765 , United States
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23
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Chen L, Long C, Tran KAM, Lee J. A Synthetic Binder of Breast Cancer Stem Cells. Chemistry 2018; 24:3694-3698. [PMID: 29323439 DOI: 10.1002/chem.201705663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Indexed: 12/19/2022]
Abstract
Cancer stem cells (CSCs) are associated with drug resistance, metastasis and recurrence of cancer. A synthetic binder of CSCs can provide a valuable tool to study the biology of CSCs and a lead to develop imaging, diagnostic and therapeutic agents targeting CSCs. Herein, a synthetic ligand (1) that specifically binds to CSCs over non-CSCs of breast cancer cells was identified for the first time via a cell-binding screening of a chemical library. The ligand 1 showed specific binding to CD24- /CD44+ /ALDH+ CSC population of MCF-7 and MDA-MB-231. We have demonstrated that 1-immobilized beads can be used as matrices for affinity isolation of 1-binding CSC population from breast cancer cells. The 1-binding population showed significantly increased expressions of stemness-associated transcription factors. Importantly, the 1-binding population demonstrated accelerated tumor growth in vivo, and the resulting tumor displayed an increased migratory activity and high expressions of CSC markers.
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Affiliation(s)
- Luxi Chen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Chao Long
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Kha Andy Minh Tran
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
| | - Jiyong Lee
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX, 75080, USA
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24
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Conibear AC, Pötgens AJG, Thewes K, Altdorf C, Hilzendeger C, Becker CFW. Synthetic Cancer-Targeting Innate Immune Stimulators Give Insights into Avidity Effects. Chembiochem 2018; 19:459-469. [PMID: 29230922 DOI: 10.1002/cbic.201700522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 11/08/2022]
Abstract
Multispecific and multivalent antibodies are seen as promising cancer therapeutics, and numerous antibody fragments and derivatives have been developed to exploit avidity effects that result in increased selectivity. Most of these multispecific and multivalent antibody strategies make use of recombinant expression of antigen-binding modules. In contrast, chemical synthesis and chemoselective ligations can be used to generate a variety of molecules with different numbers and combinations of binding moieties in a modular and homogeneous fashion. In this study we synthesized a series of targeted immune system engagers (ISErs) by using solid-phase peptide synthesis and chemoselective ligations. To explore avidity effects, we constructed molecules bearing different numbers and combinations of two "binder" peptides that target ephrin A2 and integrin α3 receptors and an "effector" peptide that binds to formyl peptide receptors and stimulates an immune response. We investigated various strategies for generating multivalent and multispecific targeted innate immune stimulators and studied their activities in terms of binding to cancer cells and stimulation of immune cells. This study gives insights into the influence that multivalency and receptor density have on avidity effects and is useful for the design of potential anticancer therapeutics.
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Affiliation(s)
- Anne C Conibear
- University of Vienna, Faculty of Chemistry, Institute of Biological Chemistry, Währinger Strasse 38, 1090, Vienna, Austria
| | - André J G Pötgens
- Syntab Therapeutics GmbH, ZBMT, Pauwelstrasse 17, 52074, Aachen, Germany
| | - Karine Thewes
- University of Vienna, Faculty of Chemistry, Institute of Biological Chemistry, Währinger Strasse 38, 1090, Vienna, Austria
| | - Claudia Altdorf
- Syntab Therapeutics GmbH, ZBMT, Pauwelstrasse 17, 52074, Aachen, Germany
| | | | - Christian F W Becker
- University of Vienna, Faculty of Chemistry, Institute of Biological Chemistry, Währinger Strasse 38, 1090, Vienna, Austria
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25
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Synthetic integrin-binding immune stimulators target cancer cells and prevent tumor formation. Sci Rep 2017; 7:17592. [PMID: 29242512 PMCID: PMC5730604 DOI: 10.1038/s41598-017-17627-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 11/28/2017] [Indexed: 01/03/2023] Open
Abstract
Immuno-oncology approaches mainly utilize monoclonal antibodies or protein-based scaffolds that bind with high affinity to cancer cells and can generate an immune response. Peptides can also bind with high affinity to cancer cells and are intermediate in size between antibodies and small molecules. They are also synthetically accessible and therefore easily modified to optimize their stability, binding affinity and selectivity. Here we describe the design of immune system engagers (ISErs), a novel class of synthetic peptide-based compounds that bind specifically to cancer cells and stimulate the immune system. A prototype, Y9, targets integrin α3, which is overexpressed on several cancer cells, and activates the immune system via a formyl methionine-containing effector peptide. Injection of Y9 leads to immune cell infiltration into tissue and prevents tumor formation in a guinea pig model. The anti-tumor activity and synthetic accessibility of Y9 illustrate that ISErs could be applied to a wide variety of targets and diseases.
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26
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Duro-Castano A, Gallon E, Decker C, Vicent MJ. Modulating angiogenesis with integrin-targeted nanomedicines. Adv Drug Deliv Rev 2017; 119:101-119. [PMID: 28502767 DOI: 10.1016/j.addr.2017.05.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/12/2017] [Accepted: 05/09/2017] [Indexed: 12/20/2022]
Abstract
Targeting angiogenesis-related pathologies, which include tumorigenesis and metastatic processes, has become an attractive strategy for the development of efficient guided nanomedicines. In this respect, integrins are cell-adhesion molecules involved in angiogenesis signaling pathways and are overexpressed in many angiogenic processes. Therefore, they represent specific biomarkers not only to monitor disease progression but also to rationally design targeted nanomedicines. Arginine-glycine-aspartic (RGD) containing peptides that bind to specific integrins have been widely utilized to provide ligand-mediated targeting capabilities to small molecules, peptides, proteins, and antibodies, as well as to drug/imaging agent-containing nanomedicines, with the final aim of maximizing their therapeutic index. Within this review, we aim to cover recent and relevant examples of different integrin-assisted nanosystems including polymeric nanoconstructs, liposomes, and inorganic nanoparticles applied in drug/gene therapy as well as imaging and theranostics. We will also critically address the overall benefits of integrin-targeting.
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Affiliation(s)
- Aroa Duro-Castano
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Elena Gallon
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - Caitlin Decker
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
| | - María J Vicent
- Centro de Investigación Príncipe Felipe, Polymer Therapeutics Lab., Av. Eduardo Primo Yúfera 3, E-46012 Valencia, Spain.
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27
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Portal C, Hintersteiner M, Barbeau O, Dodd P, Huggett M, Pérez‐Pi I, Evans D, Auer M. Facile Synthesis of a Next Generation Safety-Catch Acid-Labile Linker, SCAL-2, Suitable for Solid-Phase Synthesis, On-Support Display and for Post-Synthesis Tagging. ChemistrySelect 2017; 2:6658-6662. [PMID: 29104911 PMCID: PMC5661701 DOI: 10.1002/slct.201701519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 11/27/2022]
Abstract
The SCAL linker, a safety catch linker, is amongst the most versatile linkers for solid phase synthesis. It was originally described in 1991 by Pátek and Lebl. Yet, its application has been hindered by the low yields of published synthetic routes. Over time, the exceptional versatility of this linker has been demonstrated in several applications of advanced solid phase synthesis of peptides and peptidomimetics. Recently, an updated synthesis of the original linker has also been presented at the 22nd American Peptide Symposium, comprising 10 steps. Herein, the design and synthesis of a next generation SCAL linker, SCAL-2, is reported. SCAL-2 features a simplified molecular architecture, which allows for a more efficient synthesis in 8 steps with superior yields. Both linkers, SCAL and SCAL-2 are compared in terms of their cleavage properties adding valuable information on how to best utilize the versatility of these linkers for solid phase synthesis.
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Affiliation(s)
- Christophe Portal
- Edinburgh BioQuarter9 Little France Road, EdinburghScotland EH16 4UXU.K.
| | - Martin Hintersteiner
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - Olivier Barbeau
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - Peter Dodd
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - Margaret Huggett
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - Irene Pérez‐Pi
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - David Evans
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
| | - Manfred Auer
- School of Biological Sciences and Edinburgh Medical School: Biomedical SciencesUniversity of Edinburgh, The King's Buildings, EdinburghScotland EH9 3BFU.K.
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28
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Hao D, Xiao W, Liu R, Kumar P, Li Y, Zhou P, Guo F, Farmer DL, Lam KS, Wang F, Wang A. Discovery and Characterization of a Potent and Specific Peptide Ligand Targeting Endothelial Progenitor Cells and Endothelial Cells for Tissue Regeneration. ACS Chem Biol 2017; 12:1075-1086. [PMID: 28195700 DOI: 10.1021/acschembio.7b00118] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Endothelial progenitor cells (EPCs) and endothelial cells (ECs) play a vital role in endothelialization and vascularization for tissue regeneration. Various EPC/EC targeting biomolecules have been investigated to improve tissue regeneration with limited success often due to their limited functional specificity and structural stability. One-bead one-compound (OBOC) combinatorial technology is an ultrahigh throughput chemical library synthesis and screening method suitable for ligand discovery against a wide range of biological targets, such as integrins. In this study, using primary human EPCs/ECs as living probes, we identified an αvβ3 integrin ligand LXW7 discovered by OBOC combinatorial technology as a potent and specific EPC/EC targeting ligand. LXW7 overcomes the major barriers of other functional biomolecules that have previously been used to improve vascularization for tissue regeneration and possesses optimal stability, EPC/EC specificity, and functionality. LXW7 is a disulfide cyclic octa-peptide (cGRGDdvc) containing unnatural amino acids flanking both sides of the main functional motif; therefore it will be more resistant to proteolysis and more stable in vivo compared to linear peptides and peptides consisting of only natural amino acids. Compared with the conventional αvβ3 integrin ligand GRGD peptide, LXW7 showed stronger binding affinity to primary EPCs/ECs but weaker binding to platelets and no binding to THP-1 monocytes. In addition, ECs bound to the LXW7 treated culture surface exhibited enhanced biological functions such as proliferation, likely due to increased phosphorylation of VEGF receptor 2 (VEGF-R2) and activation of mitogen-activated protein kinase (MAPK) ERK1/2. Surface modification of electrospun microfibrous PLLA/PCL biomaterial scaffolds with LXW7 via Click chemistry resulted in significantly improved endothelial coverage. LXW7 and its derivatives hold great promise for EPC/EC recruitment and delivery and can be widely applied to functionalize various biological and medical materials to improve endothelialization and vascularization for tissue regeneration applications.
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Affiliation(s)
- Dake Hao
- Institute
of Biochemical and Biotechnological Drug, School of Pharmaceutical
Science, Shandong University, Jinan, Shandong 250012, China
- Surgical
Bioengineering Laboratory, Department of Surgery, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Wenwu Xiao
- Department
of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Ruiwu Liu
- Department
of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Priyadarsini Kumar
- Surgical
Bioengineering Laboratory, Department of Surgery, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Yuanpei Li
- Department
of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Ping Zhou
- Institute
for Regenerative Cures, University of California Davis Medical Center, Sacramento, California 95817, United States
| | - Fuzheng Guo
- Institute
for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California 95817, United States
| | - Diana L. Farmer
- Surgical
Bioengineering Laboratory, Department of Surgery, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Kit S. Lam
- Department
of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, California 95817, United States
| | - Fengshan Wang
- Institute
of Biochemical and Biotechnological Drug, School of Pharmaceutical
Science, Shandong University, Jinan, Shandong 250012, China
| | - Aijun Wang
- Surgical
Bioengineering Laboratory, Department of Surgery, School of Medicine, University of California Davis, Sacramento, California 95817, United States
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29
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Abstract
Molecular imaging allows for the visualization of changes at the cellular level in diseases such as cancer. A successful molecular imaging agent must rely on disease-selective targets and ligands that specifically interact with those targets. Unfortunately, the translation of novel target-specific ligands into the clinic has been frustratingly slow with limitations including the complex design and screening approaches for ligand identification, as well as their subsequent optimization into useful imaging agents. This review focuses on combinatorial library approaches towards addressing these two challenges, with particular focus on phage display and one-bead one-compound (OBOC) libraries. Both of these peptide-based techniques have proven successful in identifying new ligands for cancer-specific targets and some of the success stories will be highlighted. New developments in screening methodology and sequencing technology have pushed the bounds of phage display and OBOC even further, allowing for even faster and more robust discovery of novel ligands. The combination of multiple high-throughput technologies will not only allow for more accurate identification, but also faster affinity maturation, while overall streamlining the process of translating novel ligands into clinical imaging agents.
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30
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Liu R, Li X, Xiao W, Lam KS. Tumor-targeting peptides from combinatorial libraries. Adv Drug Deliv Rev 2017; 110-111:13-37. [PMID: 27210583 DOI: 10.1016/j.addr.2016.05.009] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 05/10/2016] [Accepted: 05/11/2016] [Indexed: 02/07/2023]
Abstract
Cancer is one of the major and leading causes of death worldwide. Two of the greatest challenges in fighting cancer are early detection and effective treatments with no or minimum side effects. Widespread use of targeted therapies and molecular imaging in clinics requires high affinity, tumor-specific agents as effective targeting vehicles to deliver therapeutics and imaging probes to the primary or metastatic tumor sites. Combinatorial libraries such as phage-display and one-bead one-compound (OBOC) peptide libraries are powerful approaches in discovering tumor-targeting peptides. This review gives an overview of different combinatorial library technologies that have been used for the discovery of tumor-targeting peptides. Examples of tumor-targeting peptides identified from each combinatorial library method will be discussed. Published tumor-targeting peptide ligands and their applications will also be summarized by the combinatorial library methods and their corresponding binding receptors.
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Affiliation(s)
- Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA; University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817, USA
| | - Xiaocen Li
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA; University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817, USA
| | - Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA; University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817, USA
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA; University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817, USA; Division of Hematology & Oncology, Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA
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31
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Johnson CM, O'Brien XM, Byrd AS, Parisi VE, Loosely AJ, Li W, Witt H, Faridi MH, LeFort CT, Gupta V, Kim M, Reichner JS. Integrin Cross-Talk Regulates the Human Neutrophil Response to Fungal β-Glucan in the Context of the Extracellular Matrix: A Prominent Role for VLA3 in the Antifungal Response. THE JOURNAL OF IMMUNOLOGY 2016; 198:318-334. [PMID: 27852744 DOI: 10.4049/jimmunol.1502381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 10/20/2016] [Indexed: 11/19/2022]
Abstract
Candida albicans infection produces elongated hyphae resistant to phagocytic clearance compelling alternative neutrophil effector mechanisms to destroy these physically large microbial structures. Additionally, all tissue-based neutrophilic responses to fungal infections necessitate contact with the extracellular matrix (ECM). Neutrophils undergo a rapid, ECM-dependent mechanism of homotypic aggregation and NETosis in response to C. albicans mediated by the β2 integrin, complement receptor 3 (CR3, CD11b/CD18, αMβ2). Neither homotypic aggregation nor NETosis occurs when human neutrophils are exposed either to immobilized fungal β-glucan or to C. albicans hyphae without ECM. The current study provides a mechanistic basis to explain how matrix controls the antifungal effector functions of neutrophils under conditions that preclude phagocytosis. We show that CR3 ligation initiates a complex mechanism of integrin cross-talk resulting in differential regulation of the β1 integrins VLA3 (α3β1) and VLA5 (α5β1). These β1 integrins control distinct antifungal effector functions in response to either fungal β-glucan or C. albicans hyphae and fibronectin, with VLA3 inducing homotypic aggregation and VLA5 regulating NETosis. These integrin-dependent effector functions are controlled temporally whereby VLA5 and CR3 induce rapid, focal NETosis early after binding fibronectin and β-glucan. Within minutes, CR3 undergoes inside-out auto-activation that drives the downregulation of VLA5 and the upregulation of VLA3 to support neutrophil swarming and aggregation. Forcing VLA5 to remain in the activated state permits NETosis but prevents homotypic aggregation. Therefore, CR3 serves as a master regulator during the antifungal neutrophil response, controlling the affinity states of two different β1 integrins, which in turn elicit distinct effector functions.
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Affiliation(s)
- Courtney M Johnson
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912.,Graduate Program in Pathobiology, Brown University, Providence, RI 02912
| | - Xian M O'Brien
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912
| | - Angel S Byrd
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912.,Graduate Program in Pathobiology, Brown University, Providence, RI 02912
| | - Valentina E Parisi
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Graduate Program in Pathobiology, Brown University, Providence, RI 02912
| | - Alex J Loosely
- Department of Physics, Brown University, Providence, RI 02912
| | - Wei Li
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903
| | - Hadley Witt
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912.,Graduate Program in Pathobiology, Brown University, Providence, RI 02912
| | - Mohd H Faridi
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL 60612
| | - Craig T LeFort
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912
| | - Vineet Gupta
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL 60612
| | - Minsoo Kim
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, NY 14642
| | - Jonathan S Reichner
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI 02903.,Warren Alpert Medical School, Brown University, Providence, RI 02912.,Graduate Program in Pathobiology, Brown University, Providence, RI 02912
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32
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Singh J, Lopes D, Gomika Udugamasooriya D. Development of a large peptoid-DOTA combinatorial library. Biopolymers 2016; 106:673-84. [PMID: 27257968 PMCID: PMC5035194 DOI: 10.1002/bip.22883] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 04/15/2016] [Accepted: 05/31/2016] [Indexed: 01/03/2023]
Abstract
Conventional one-bead one-compound (OBOC) library synthesis is typically used to identify molecules with therapeutic value. The design and synthesis of OBOC libraries that contain molecules with imaging or even potentially therapeutic and diagnostic capacities (e.g. theranostic agents) has been overlooked. The development of a therapeutically active molecule with a built-in imaging component for a certain target is a daunting task, and structure-based rational design might not be the best approach. We hypothesize to develop a combinatorial library with potentially therapeutic and imaging components fused together in each molecule. Such molecules in the library can be used to screen, identify, and validate as direct theranostic candidates against targets of interest. As the first step in achieving that aim, we developed an on-bead library of 153,600 Peptoid-DOTA compounds in which the peptoids are the target-recognizing and potentially therapeutic components and the DOTA is the imaging component. We attached the DOTA scaffold to TentaGel beads using one of the four arms of DOTA, and we built a diversified 6-mer peptoid library on the remaining three arms. We evaluated both the synthesis and the mass spectrometric sequencing capacities of the test compounds and of the final library. The compounds displayed unique ionization patterns including direct breakages of the DOTA scaffold into two units, allowing clear decoding of the sequences. Our approach provides a facile synthesis method for the complete on-bead development of large peptidomimetic-DOTA libraries for screening against biological targets for the identification of potential theranostic agents in the future. © 2016 The Authors. Biopolymers Published by Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 673-684, 2016.
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Affiliation(s)
- Jaspal Singh
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, 77204
| | - Daniel Lopes
- Advanced Imaging Research Center, UT-Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390
| | - D Gomika Udugamasooriya
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, 77204.
- Department of Cancer Systems Imaging, MD Anderson Cancer Center, 1881 East Road, Houston, TX, 77030-4009.
- Advanced Imaging Research Center, UT-Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390.
- Department of Biochemistry, UT-Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390.
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33
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Martelli C, Dico AL, Diceglie C, Lucignani G, Ottobrini L. Optical imaging probes in oncology. Oncotarget 2016; 7:48753-48787. [PMID: 27145373 PMCID: PMC5217050 DOI: 10.18632/oncotarget.9066] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 04/10/2016] [Indexed: 01/19/2023] Open
Abstract
Cancer is a complex disease, characterized by alteration of different physiological molecular processes and cellular features. Keeping this in mind, the possibility of early identification and detection of specific tumor biomarkers by non-invasive approaches could improve early diagnosis and patient management.Different molecular imaging procedures provide powerful tools for detection and non-invasive characterization of oncological lesions. Clinical studies are mainly based on the use of computed tomography, nuclear-based imaging techniques and magnetic resonance imaging. Preclinical imaging in small animal models entails the use of dedicated instruments, and beyond the already cited imaging techniques, it includes also optical imaging studies. Optical imaging strategies are based on the use of luminescent or fluorescent reporter genes or injectable fluorescent or luminescent probes that provide the possibility to study tumor features even by means of fluorescence and luminescence imaging. Currently, most of these probes are used only in animal models, but the possibility of applying some of them also in the clinics is under evaluation.The importance of tumor imaging, the ease of use of optical imaging instruments, the commercial availability of a wide range of probes as well as the continuous description of newly developed probes, demonstrate the significance of these applications. The aim of this review is providing a complete description of the possible optical imaging procedures available for the non-invasive assessment of tumor features in oncological murine models. In particular, the characteristics of both commercially available and newly developed probes will be outlined and discussed.
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Affiliation(s)
- Cristina Martelli
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Centre of Molecular and Cellular Imaging-IMAGO, Milan, Italy
| | - Alessia Lo Dico
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Umberto Veronesi Foundation, Milan, Italy
| | - Cecilia Diceglie
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Centre of Molecular and Cellular Imaging-IMAGO, Milan, Italy
- Tecnomed Foundation, University of Milan-Bicocca, Monza, Italy
| | - Giovanni Lucignani
- Centre of Molecular and Cellular Imaging-IMAGO, Milan, Italy
- Department of Health Sciences, University of Milan, Milan, Italy
| | - Luisa Ottobrini
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Centre of Molecular and Cellular Imaging-IMAGO, Milan, Italy
- Institute for Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Milan, Italy
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34
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Discovery and characterization of a high-affinity and high-specificity peptide ligand LXY30 for in vivo targeting of α3 integrin-expressing human tumors. EJNMMI Res 2016; 6:18. [PMID: 26922417 PMCID: PMC4769701 DOI: 10.1186/s13550-016-0165-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/19/2016] [Indexed: 12/20/2022] Open
Abstract
Background α3β1 integrin is overexpressed in several types of human cancer and is associated with poor prognosis, metastasis, and resistance to cancer treatment. We previously identified a cyclic peptide ligand LXY1 that specifically binds to the α3β1 integrin on human glioblastoma U-87MG cells. Here, we optimized LXY1 through one-bead one-compound combinatorial library screening and site-specific modifications to improve its in vivo binding property. Methods Three bead libraries were synthesized and whole-cell binding assays were performed. The binding capacity of individual peptide ligands against different tumor cells was determined by flow cytometry and confirmed by optical imaging. A complex joining biotinylated ligand with streptavidin-Cy5.5 was used for in vivo target imaging in both subcutaneous and orthotopic U-87MG xenograft mouse models. Results LXY30, a cyclic peptide with the sequence cdG-Phe(3,5-diF)-G-Hyp-NcR, emerged as the most potent and selective ligand for the α3 subunit of α3β1 integrin with improved in vitro and in vivo tumor-targeting effects compared to LXY1 in U-87MG cells. LXY30 is considerably stable in plasma as demonstrated in an in vitro stability study in 90 % human plasma. LXY30 also binds to several other known α3β1 integrin-expressing glioblastoma, lung, and breast cancer cell lines with various affinities. Conclusions Our data support further investigating the role of LXY30 as a human tumor-targeting peptide ligand for systemic and intracranial delivery of imaging agents and cancer therapeutics. Electronic supplementary material The online version of this article (doi:10.1186/s13550-016-0165-z) contains supplementary material, which is available to authorized users.
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Chen CC, Xing L, Stark M, Ou T, Holla P, Xiao K, Kamita SG, Hammock BD, Lam K, Cheng RH. Chemically activatable viral capsid functionalized for cancer targeting. Nanomedicine (Lond) 2016; 11:377-90. [PMID: 26786134 DOI: 10.2217/nnm.15.207] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
AIM To design a theranostic capsule using the virus-like nanoparticle of the hepatitis E virus modified to display breast cancer cell targeting functional group (LXY30). METHODS Five surface-exposed residues were mutated to cysteine to allow conjugation to maleimide-linked chemical groups via thiol-selective linkages. Engineered virus-like nanoparticles were then covalently conjugated to a breast cancer recognized ligand, LXY30 and an amine-coupled near-infrared fluorescence dye. RESULTS LXY30-HEV VLP was checked for its binding and entry to a breast cancer cell line and for tumor targeting in vivo to breast cancer tissue in mice. The engineered virus-like nanoparticle not only targeted cancer cells, but also appeared immune silent to native hepatitis E virus antibodies due to epitope disruption at the antibody-binding site. CONCLUSION These results demonstrate the production of a theranostic capsule suitable for cancer diagnostics and therapeutics based on surface modification of a highly stable virus-like nanoparticle.
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Affiliation(s)
- Chun-Chieh Chen
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Li Xing
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Marie Stark
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Tingwei Ou
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Prasida Holla
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Kai Xiao
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Shizuo G Kamita
- Department of Entomology & Nematology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Bruce D Hammock
- Department of Entomology & Nematology, University of California, 1 Shields Ave, Davis, CA 95616, USA
| | - Kit Lam
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - R Holland Cheng
- Department of Molecular & Cellular Biology, University of California, 1 Shields Ave, Davis, CA 95616, USA
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Wang Y, Xiao W, Zhang Y, Meza L, Tseng H, Takada Y, Ames JB, Lam KS. Optimization of RGD-Containing Cyclic Peptides against αvβ3 Integrin. Mol Cancer Ther 2015; 15:232-40. [PMID: 26719578 DOI: 10.1158/1535-7163.mct-15-0544] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/16/2015] [Indexed: 12/17/2022]
Abstract
We have previously reported the use of one-bead-one-compound (OBOC) combinatorial technology to develop a disulfide cyclic, Arg-Gly-Asp-containing octapeptide LXW7 (cGRGDdvc), that targets αvβ3 integrin with high affinity and specificity. αvβ3 integrin is known to be overexpressed in many cancers and in tumor vasculature, and it has been established as a cancer therapeutic target. To further optimize LXW7, we have performed systematic structure-activity relationship studies. On the basis of the results, two highly focused OBOC peptide libraries were designed, synthesized, and screened against αvβ3 integrin-transfected K562 cells. One of the best ligands, LXW64, was found to have 6.6-fold higher binding affinity than LXW7, and showed preferential binding to cells expressing αvβ3 integrin. In addition to binding strongly to U-87MG glioblastoma cells in vitro, LXW64 also targets U-87MG xenografts implanted in nude mice, indicating that it is an excellent vehicle for the delivery of cytotoxic payload to tumors and tumor blood vessels that overexpress αvβ3 integrin. Mol Cancer Ther; 15(2); 232-40. ©2015 AACR.
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Affiliation(s)
- Yan Wang
- Department of Biochemistry and Molecular Medicine, University of California Davis Cancer Center, Sacramento, California
| | - Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, University of California Davis Cancer Center, Sacramento, California
| | - Yonghong Zhang
- Department of Chemistry, University of Texas-Pan American, Edinburg, Texas
| | - Leah Meza
- Department of Biochemistry and Molecular Medicine, University of California Davis Cancer Center, Sacramento, California
| | - Harry Tseng
- Department of Biochemistry and Molecular Medicine, University of California Davis Cancer Center, Sacramento, California
| | - Yoshikazu Takada
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California
| | - James B Ames
- Department of Chemistry, University of California Davis, Davis, California
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, University of California Davis Cancer Center, Sacramento, California.
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Bononi FC, Luyt LG. Synthesis and cell-based screening of one-bead-one-compound peptide libraries. Methods Mol Biol 2015; 1248:223-37. [PMID: 25616336 DOI: 10.1007/978-1-4939-2020-4_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Combinatorial one-bead-one-compound (OBOC) peptide library screening has proven to be a powerful tool for identification of small molecules, peptides, or peptidomimetics against a variety of specific targets such as cell surface receptors, protein kinases, proteases, and phosphatases. With each bead displaying many copies of a single chemical entity, millions of compounds can be rapidly synthesized and screened with whole-cell binding on-bead functional assays. Here we describe the methodology for the synthesis, screening, and sequence deconvolution of an OBOC peptide library analyzed for affinity to a cancer cell line.
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Affiliation(s)
- Fernanda C Bononi
- Department of Chemistry, The University of Western Ontario, London, ON, Canada
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Cruickshank DR, Luyt LG. The development of organometallic OBOC peptide libraries and sequencing of N-terminal rhenium(I) tricarbonyl-containing peptides utilizing MALDI tandem mass spectrometry. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The development of peptide-based imaging agents through screening of large peptide libraries is hindered by the additional requirement of a radionuclide−chelator complex that can negatively affect the binding properties of the peptide. Herein, we report N-terminal rhenium(I)tricarbonyl OBOC (one-bead, one-compound) peptide libraries for use in the direct screening of potential imaging agents. The rhenium(I) tricarbonyl is incorporated directly in the library as an imaging entity surrogate to account for the presence of a technetium-99m radionuclide chelate. The identification of unknown organometallic peptides on single beads is successfully accomplished through MALDI tandem mass spectrometry, preceded by a systematic investigation of the effects of a variety of N-terminal rhenium(I) tricarbonyl chelates on peptide fragmentation patterns.
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Affiliation(s)
- Dana R. Cruickshank
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A 3K7, Canada
| | - Leonard G. Luyt
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A 3K7, Canada
- London Regional Cancer Program, 790 Commissioners Rd. E., London, ON N6A 4L6, Canada
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Chemoselective tarantula toxins report voltage activation of wild-type ion channels in live cells. Proc Natl Acad Sci U S A 2014; 111:E4789-96. [PMID: 25331865 DOI: 10.1073/pnas.1406876111] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Electrically excitable cells, such as neurons, exhibit tremendous diversity in their firing patterns, a consequence of the complex collection of ion channels present in any specific cell. Although numerous methods are capable of measuring cellular electrical signals, understanding which types of ion channels give rise to these signals remains a significant challenge. Here, we describe exogenous probes which use a novel mechanism to report activity of voltage-gated channels. We have synthesized chemoselective derivatives of the tarantula toxin guangxitoxin-1E (GxTX), an inhibitory cystine knot peptide that binds selectively to Kv2-type voltage gated potassium channels. We find that voltage activation of Kv2.1 channels triggers GxTX dissociation, and thus GxTX binding dynamically marks Kv2 activation. We identify GxTX residues that can be replaced by thiol- or alkyne-bearing amino acids, without disrupting toxin folding or activity, and chemoselectively ligate fluorophores or affinity probes to these sites. We find that GxTX-fluorophore conjugates colocalize with Kv2.1 clusters in live cells and are released from channels activated by voltage stimuli. Kv2.1 activation can be detected with concentrations of probe that have a trivial impact on cellular currents. Chemoselective GxTX mutants conjugated to dendrimeric beads likewise bind live cells expressing Kv2.1, and the beads are released by channel activation. These optical sensors of conformational change are prototype probes that can indicate when ion channels contribute to electrical signaling.
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Sepsis lethality via exacerbated tissue infiltration and TLR-induced cytokine production by neutrophils is integrin α3β1-dependent. Blood 2014; 124:3515-23. [PMID: 25278585 DOI: 10.1182/blood-2014-01-552943] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Integrin-mediated migration of neutrophils to infected tissue sites is vital for pathogen clearance and therefore host survival. Although β2 integrins have been shown to mediate neutrophil transendothelial migration during systemic and local inflammation, relatively little information is available regarding neutrophil migration in sepsis beyond the endothelial cell layer. In this study, we report that integrin α3β1 (VLA-3; CD49c/CD29) is dramatically upregulated on neutrophils isolated from both human septic patients and in mouse models of sepsis. Compared with the α3β1 (low) granulocytes, α3β1 (high) cells from septic animals displayed hyperinflammatory phenotypes. Administration of a α3β1 blocking peptide and conditional deletion of α3 in granulocytes significantly reduced the number of extravasating neutrophils and improved survival in septic mice. In addition, expression of α3β1 on neutrophils was associated with Toll-like receptor-induced inflammatory responses and cytokine productions. Thus, our results show that α3β1 is a novel marker of tissue homing and hyperresponsive neutrophil subtypes in sepsis, and blocking of α3β1 may represent a new therapeutic approach in sepsis treatment.
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Xiao W, Bononi FC, Townsend J, Li Y, Liu R, Lam KS. Immobilized OBOC combinatorial bead array to facilitate multiplicative screening. Comb Chem High Throughput Screen 2014; 16:441-448. [PMID: 23488896 DOI: 10.2174/1386207311316060004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 03/07/2013] [Accepted: 03/12/2013] [Indexed: 11/22/2022]
Abstract
One-bead-one-compound (OBOC) combinatorial library screening has been broadly utilized for the last two decades to identify small molecules, peptides or peptidomimetics targeting variable screening probes such as cell surface receptors, bacteria, protein kinases, phosphatases, proteases etc. In previous screening methods, library beads were suspended in solution and screened against one single probe. Only the positive beads were tracked and isolated for additional screens and finally selected for chemical decoding. During this process, the remaining negative beads were not tracked and discarded. Here we report a novel bead immobilization method such that a bead library array can be conveniently prepared and screened in its entirety, sequentially many times with a series of distinct probes. This method not only allows us to increase the screening efficiency but also permits us to determine the binding profile of each and every library bead against a large number of target receptors. As proof of concept, we serially screened a random OBOC disulfide containing cyclic heptapeptide library with three water soluble dyes as model probes: malachite green, bromocresol purple and indigo carmine. This multiplicative screening approach resulted in a rapid determination of the binding profile of each and every bead respective to each of the three dyes. Beads that interacted with malachite green only, bromocresol purple only, or both indigo carmine and bromocresol purple were isolated, and their peptide sequences were determined with microsequencer. Ultimately, the novel OBOC multiplicative screening approach could play a key role in the enhancement of existing on-bead assays such as whole cell binding, bacteria binding, protein binding, posttranslational modifications etc. with increased efficiency, capacity, and specificity.
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Affiliation(s)
- Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, UC Davis Cancer Center, University of California Davis, 2700 Stockton Boulevard, Sacramento, California 95817, United States
| | - Fernanda C Bononi
- Department of Biochemistry and Molecular Medicine, UC Davis Cancer Center, University of California Davis, 2700 Stockton Boulevard, Sacramento, California 95817, United States
| | - Jared Townsend
- Physiology & Cell Biology, University of Nevada School of Medicine, Anderson Rm 104E, UNR, 1664 N. Virginia St. Reno, NV 89557
| | - Yuanpei Li
- Department of Biochemistry and Molecular Medicine, UC Davis Cancer Center, University of California Davis, 2700 Stockton Boulevard, Sacramento, California 95817, United States
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, UC Davis Cancer Center, University of California Davis, 2700 Stockton Boulevard, Sacramento, California 95817, United States
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, UC Davis Cancer Center, University of California Davis, 2700 Stockton Boulevard, Sacramento, California 95817, United States
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Dai W, Yang F, Ma L, Fan Y, He B, He Q, Wang X, Zhang H, Zhang Q. Combined mTOR inhibitor rapamycin and doxorubicin-loaded cyclic octapeptide modified liposomes for targeting integrin α3 in triple-negative breast cancer. Biomaterials 2014; 35:5347-5358. [DOI: 10.1016/j.biomaterials.2014.03.036] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/14/2014] [Indexed: 11/25/2022]
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Zaman M, Ahmad E, Qadeer A, Rabbani G, Khan RH. Nanoparticles in relation to peptide and protein aggregation. Int J Nanomedicine 2014; 9:899-912. [PMID: 24611007 PMCID: PMC3928455 DOI: 10.2147/ijn.s54171] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Over the past two decades, there has been considerable research interest in the use of nanoparticles in the study of protein and peptide aggregation, and of amyloid-related diseases. The influence of nanoparticles on amyloid formation yields great interest due to its small size and high surface area-to-volume ratio. Targeting nucleation kinetics by nanoparticles is one of the most searched for ways to control or induce this phenomenon. The observed effect of nanoparticles on the nucleation phase is determined by particle composition, as well as the amount and nature of the particle's surface. Various thermodynamic parameters influence the interaction of proteins and nanoparticles in the solution, and regulate the protein assembly into fibrils, as well as the disaggregation of preformed fibrils. Metals, organic particles, inorganic particles, amino acids, peptides, proteins, and so on are more suitable candidates for nanoparticle formulation. In the present review, we attempt to explore the effects of nanoparticles on protein and peptide fibrillation processes from both perspectives (ie, as inducers and inhibitors on nucleation kinetics and in the disaggregation of preformed fibrils). Their formulation and characterization by different techniques have been also addressed, along with their toxicological effects, both in vivo and in vitro.
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Affiliation(s)
- Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Ejaz Ahmad
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Atiyatul Qadeer
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Gulam Rabbani
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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Affiliation(s)
- Bethany Powell Gray
- Department of Internal Medicine and The Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8807, United States
| | - Kathlynn C. Brown
- Department of Internal Medicine and The Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8807, United States
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Abstract
PEG-dendritic block copolymer (telodendrimer) is a unique class of polymers with well-defined structures and tunable aggregation properties, which have been recently developed as novel micelle-based nanocarriers. This new class of nanocarrier is highly versatile, robust, multifunctional and has many unique properties for drug delivery that are superior to most other nanocarriers reported in the literature. Reversible crosslinking of micelles is able to minimize the premature drug release during circulation. These crosslinks can be reversed with endogenous and/or exogenous stimuli. To further facilitate the precise delivery of nanoparticle drugs to cancer cells, the nanoparticles surface can be decorated with ovarian cancer targeting ligands. This review is focused on the various strategies used for the design, preparation, pharmacokinetic, biodistribution and preclinical therapeutic applications of telodendrimer-based nanocarriers for drug delivery in the treatment of ovarian cancer. Lastly, future perspectives for the development of ovarian cancer-targeting telodendrimer nanotherapeutics are also explored.
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Cho CF, Behnam Azad B, Luyt LG, Lewis JD. High-throughput screening of one-bead-one-compound peptide libraries using intact cells. ACS COMBINATORIAL SCIENCE 2013; 15:393-400. [PMID: 23819541 DOI: 10.1021/co4000584] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Screening approaches based on one-bead-one-compound (OBOC) combinatorial libraries have facilitated the discovery of novel peptide ligands for cellular targeting in cancer and other diseases. Recognition of cell surface proteins is optimally achieved using live cells, yet screening intact cell populations is time-consuming and inefficient. Here, we evaluate the Complex Object Parametric Analyzer and Sorter (COPAS) large particle biosorter for high-throughput sorting of bead-bound human cell populations. When a library of RGD-containing peptides was screened against human cancer cells that express αvβ3 integrin, it was found that bead-associated cells are rapidly dissociated when sorted through the COPAS instrument. When the bound cells were reversibly cross-linked onto the beads, however, we demonstrated that cell/bead mixtures can be sorted quickly and accurately. This reversible cross-linking approach is compatible with matrix-assisted laser desorption ionization time-of-flight mass spectrometry-based peptide sequence deconvolution. This approach should allow one to rapidly screen an OBOC library and identify novel peptide ligands against cell surface targets in their native conformation.
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Affiliation(s)
- Choi-Fong Cho
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
| | - Babak Behnam Azad
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - Leonard G. Luyt
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - John D. Lewis
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
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White AD, Keefe AJ, Nowinski AK, Shao Q, Caldwell K, Jiang S. Standardizing and simplifying analysis of peptide library data. J Chem Inf Model 2013; 53:493-9. [PMID: 23327110 DOI: 10.1021/ci300484q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Peptide libraries allow researchers to quickly find hundreds of peptide sequences with a desired property. Currently, the large amount of data generated from peptide libraries is analyzed by hand, where researchers search for repeating patterns in the peptide sequences. Such patterns are called motifs. In this work, we describe a set of algorithms which allow quick, efficient, and standard analysis of peptide libraries. Four main techniques are described: (1) choice of the number of motifs present in a peptide library; (2) separation of the peptides into groups of similar sequences; (3) fitting of a model to the peptides to extract motifs; (4) analysis of the library using quantitative structure-property relationships if no clear motifs are present. The application of five previously published data sets shows these techniques can automatically repeat the work of experts quickly and allow much more flexibility in analysis. A new way of visually presenting peptide libraries is also described, which allows visual inspection of the grouping and spread of sequences. The algorithms have been implemented in an open-source plug-in called "peplib" and an online web application.
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Affiliation(s)
- Andrew D White
- Department of Chemical Engineering, University of Washington, Seattle, Washington, USA
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Insonation of targeted microbubbles produces regions of reduced blood flow within tumor vasculature. Invest Radiol 2012; 47:398-405. [PMID: 22659591 DOI: 10.1097/rli.0b013e31824bd237] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES In ultrasound molecular imaging, a sequence of high-pressure ultrasound pulses is frequently applied to destroy bound targeted microbubbles, to quantify accumulated microbubbles or to prepare for successive microbubble injections; however, the potential for biological effects from such a strategy has not been fully investigated. Here, we investigate the effect of high-pressure insonation of bound microbubbles and the potential for thrombogenic effects. MATERIALS AND METHODS A total of 114 mice carrying either Met-1 or neu deletion mutant (NDL) tumors was insonified (Siemens Sequoia system, 15L8 transducer, 5-MHz color-Doppler pulses, 4 or 2 MPa peak-negative pressure, 8.1-millisecond pulse repetition period, 6-cycle pulse length, and 900-millisecond insonation). Microbubbles conjugated with cyclic-arginine-glycine-aspartic acid (cRGD) or cyclic-aspartic-acid-glycine-tyrosine (3-NO)-glycine-hydroxyproline-asparagine (LXY-3) peptides or control (no peptide) microbubbles were injected, and contrast pulse sequencing was used to visualize the flowing and bound microbubbles. An anti-CD41 antibody was injected in a subset of animals to block potential thrombogenic effects. RESULTS After the accumulation of targeted microbubbles and high-pressure (4 MPa) insonation, reduced blood flow, as demonstrated by a reduction in echoes from flowing microbubbles, was observed in 20 Met-1 mice (71%) and 4 NDL mice (40%). The area of low image intensity increased from 22 ± 13% to 63 ± 17% of the observed plane in the Met-1 model (P < 0.01) and from 16 ± 3% to 45 ± 24% in the NDL model (P < 0.05). Repeated microbubble destruction at 4 MPa increased the area of low image intensity to 76.7 ± 13.4% (P < 0.05). The fragmentation of bound microbubbles with a lower peak-negative pressure (2 MPa) reduced the occurrence of the blood flow alteration to 28% (5/18 Met-1 tumor mice). The persistence of the observed blood flow change was approximately 30 minutes after the microbubble destruction event. Dilated vessels and enhanced extravasation of 150 kDa fluorescein-isothiocyanate (FITC)-dextran were observed by histology and confocal microscopy. Preinjection of an anti-CD41 antibody blocked the reduction of tumor blood flow, where a reduction in blood flow was observed in only 1 of 26 animals. CONCLUSION High-pressure fragmentation of microbubbles bound to tumor endothelial receptors reduced blood flow within 2 syngeneic mouse tumor models for ∼30 minutes. Platelet activation, likely resulting from the injury of small numbers of endothelial cells, was the apparent mechanism for the flow reduction.
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Hyun YM, Sumagin R, Sarangi PP, Lomakina E, Overstreet MG, Baker CM, Fowell DJ, Waugh RE, Sarelius IH, Kim M. Uropod elongation is a common final step in leukocyte extravasation through inflamed vessels. ACTA ACUST UNITED AC 2012; 209:1349-62. [PMID: 22711877 PMCID: PMC3405502 DOI: 10.1084/jem.20111426] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Uropod elongation occurs during leukocyte extravasation. The efficient trafficking of immune cells into peripheral nonlymphoid tissues is key to enact their protective functions. Despite considerable advances in our understanding of cell migration in secondary lymphoid organs, real-time leukocyte recruitment into inflamed tissues is not well characterized. The conventional multistep paradigm of leukocyte extravasation depends on CD18 integrin–mediated events such as rapid arrest and crawling on the surface of the endothelium and transmigration through the endothelial layer. Using enhanced three-dimensional detection of fluorescent CD18 fusion proteins in a newly developed knockin mouse, we report that extravasating leukocytes (neutrophils, monocytes, and T cells) show delayed uropod detachment and become extremely elongated before complete transmigration across the endothelium. Additionally, these cells deposit CD18+ microparticles at the subendothelial layer before retracting the stretched uropod. Experiments with knockout mice and blocking antibodies reveal that the uropod elongation and microparticle formation are the result of LFA-1–mediated adhesion and VLA-3–mediated cell migration through the vascular basement membrane. These findings suggest that uropod elongation is a final step in the leukocyte extravasation cascade, which may be important for precise regulation of leukocyte recruitment into inflamed tissues.
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Affiliation(s)
- Young-Min Hyun
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY 14642, USA
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