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Barba-Bon A, Gumerova NI, Tanuhadi E, Ashjari M, Chen Y, Rompel A, Nau WM. All-Inorganic Polyoxometalates Act as Superchaotropic Membrane Carriers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309219. [PMID: 37943506 DOI: 10.1002/adma.202309219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/30/2023] [Indexed: 11/10/2023]
Abstract
Polyoxometalates (POMs) are known antitumoral, antibacterial, antiviral, and anticancer agents and considered as next-generation metallodrugs. Herein, a new biological functionality in neutral physiological media, where selected mixed-metal POMs are sufficiently stable and able to affect membrane transport of impermeable, hydrophilic, and cationic peptides (heptaarginine, heptalysine, protamine, and polyarginine) is reported. The uptake is observed in both, model membranes as well as cells, and attributed to the superchaotropic properties of the polyoxoanions. In view of the structural diversity of POMs these findings pave the way toward their biomedical application in drug delivery or for cell-biological uptake studies with biological effector molecules or staining agents.
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Affiliation(s)
- Andrea Barba-Bon
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Josef-Holaubek-Platz 2, Wien, 1090, Austria
| | - Elias Tanuhadi
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Josef-Holaubek-Platz 2, Wien, 1090, Austria
| | - Maryam Ashjari
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Yao Chen
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Josef-Holaubek-Platz 2, Wien, 1090, Austria
| | - Werner M Nau
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
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2
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Martins JN, Raimundo B, Rioboo A, Folgar-Cameán Y, Montenegro J, Basílio N. Photoswitchable Calixarene Activators for Controlled Peptide Transport across Lipid Membranes. J Am Chem Soc 2023. [PMID: 37289668 DOI: 10.1021/jacs.3c01829] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Supramolecular synthetic transporters are crucial to understand and activate the passage across lipid membranes of hydrophilic effector molecules. Herein, we introduce photoswitchable calixarenes for the light-controlled transport activation of cationic peptide cargos across model lipid bilayers and inside living cells. Our approach was based on rationally designed p-sulfonatocalix[4]arene receptors equipped with a hydrophobic azobenzene arm, which recognize cationic peptide sequences at the nM range. Activation of membrane peptide transport is confirmed, in synthetic vesicles and living cells, for calixarene activators featuring the azobenzene arm in the E configuration. Therefore, this method allows the modulation of the transmembrane transport of peptide cargos upon Z-E photoisomerization of functionalized calixarenes using 500 nm visible light. These results showcase the potential of photoswitchable counterion activators for the light-triggered delivery of hydrophilic biomolecules and pave the way for potential applications in remotely controlled membrane transport and photopharmacology applications of hydrophilic functional biomolecules.
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Affiliation(s)
- Joana N Martins
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Beatriz Raimundo
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Alicia Rioboo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Yeray Folgar-Cameán
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Nuno Basílio
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
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3
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Abstract
The membrane translocation of hydrophilic substances constitutes a challenge for their application as therapeutic compounds and labelling probes1–4. To remedy this, charged amphiphilic molecules have been classically used as carriers3,5. However, such amphiphilic carriers may cause aggregation and non-specific membrane lysis6,7. Here we show that globular dodecaborate clusters, and prominently B12Br122−, can function as anionic inorganic membrane carriers for a broad range of hydrophilic cargo molecules (with molecular mass of 146–4,500 Da). We show that cationic and neutral peptides, amino acids, neurotransmitters, vitamins, antibiotics and drugs can be carried across liposomal membranes. Mechanistic transport studies reveal that the carrier activity is related to the superchaotropic nature of these cluster anions8–12. We demonstrate that B12Br122− affects cytosolic uptake of different small bioactive molecules, including the antineoplastic monomethyl auristatin F, the proteolysis targeting chimera dBET1 and the phalloidin toxin, which has been successfully delivered in living cells for cytoskeleton labelling. We anticipate the broad and distinct delivery spectrum of our superchaotropic carriers to be the starting point of conceptually distinct cell-biological, neurobiological, physiological and pharmaceutical studies. The superchaotropic nature of globular boron cluster anions enables direct passage of a wide range of molecules across lipid membranes.
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Fernández-Caro H, Méndez-Ardoy A, Montenegro J. Dynamic nanosurface reconfiguration by host-guest supramolecular interactions. NANOSCALE 2022; 14:3599-3608. [PMID: 35188162 DOI: 10.1039/d1nr05315a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The dynamic functionalization of the nanoparticle surface with biocompatible coatings is a critical step towards the development of functional nano-sized systems. While covalent approaches have been broadly exploited in the stabilization of nanoparticle colloidal systems, these strategies hinder the dynamic nanosurface chemical reconfiguration. Supramolecular strategies based on specific host-guest interactions hold promise due to their intrinsic reversibility, self-healing capabilities and modularity. Host/guest couples have recently been implemented in nanoparticle platforms for the exchange and release of effector molecules. However, the direct exchange of biocompatible hydrophilic oligomers (e.g. peptides) for the modulation of the surface charge and chemical properties of nanoparticles still remains a challenge. Here, we show the intracellular reconfiguration of nanoparticles by a host/guest mechanism with biocompatible oligomeric competitors. The surface of gold nanoparticles was functionalized with cyclodextrin hosts and the guest exchange was studied with biocompatible mono and divalent adamantyl competitors. The systematic characterization of the size and surface potential of the host/guest nanoparticles allowed the optimization of the binding and the stabilization properties of these supramolecular systems. The in cellulo host/guest-mediated direct reconfiguration of the peptide layer at the surface of nanoparticles is achieved by controlling the valence of adamantane-equipped peptides. This work demonstrates that host/guest supramolecular systems can be exploited for the direct exchange of pendants at the surface of nanoparticles and the intracellular dynamic chemical reconfiguration of biocompatible colloidal systems.
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Affiliation(s)
- Héctor Fernández-Caro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | | | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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5
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Abstract
We here describe the synthesis and biological evaluation of glycan shields for cell penetrating peptides. A new benzyl alkoxyamine connector was employed for the coupling of two saccharides units in the lateral side chain of individual amino acids in a peptide sequence. The oxyme bond formation with the corresponding glycan aldehydes allowed the preparation of highly glycosylated penetrating peptides with a minimal synthetic effort. Surprisingly, it was found that a four to six saccharide substitution did not decrease uptake efficiency in cells, whereas it significantly improved the toxicity profile of the penetrating peptide. In particular, glucose substitution was confirmed as an optimal glycan shield that showed an excellent in vitro uptake and intracellular localization as well as a superior in vivo biodistribution.
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Affiliation(s)
- Iván Gallego
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Negi S, Hamori M, Kawahara-Nakagawa Y, Imanishi M, Kurehara M, Kitada C, Kawahito Y, Kishi K, Manabe T, Kawamura N, Kitagishi H, Mashimo M, Shibata N, Sugiura Y. Importance of two-dimensional cation clusters induced by protein folding in intrinsic intracellular membrane permeability. RSC Chem Biol 2022; 3:1076-1084. [PMID: 35975000 PMCID: PMC9347356 DOI: 10.1039/d2cb00098a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/11/2022] [Indexed: 11/21/2022] Open
Abstract
Two-dimensional cation clusters formed on the surface of proteins play an important role in their intracellular translocation.
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Affiliation(s)
- Shigeru Negi
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Mami Hamori
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Yuka Kawahara-Nakagawa
- Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo, 678-1297, Japan
| | - Miki Imanishi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Miku Kurehara
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Chieri Kitada
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Yuri Kawahito
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Kanae Kishi
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8553, Japan
| | - Takayuki Manabe
- Clinical Research Support Center, Asahikawa Medical University Hospital, 2-1-1-1 Midorigaokahigashi, Asahikawa 078-8510, Japan
| | - Nobuyuki Kawamura
- Education Center for Pharmacy, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Akiha-ku, Niigata City, Niigata 956-8603, Japan
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - Masato Mashimo
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Nobuhito Shibata
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
| | - Yukio Sugiura
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto 610-0395, Japan
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Wei S, Zhou S, Huang W, Zan X, Geng W. Efficient Delivery of Antibodies Intracellularly by Co-Assembly with Hexahistidine-Metal Assemblies (HmA). Int J Nanomedicine 2021; 16:7449-7461. [PMID: 34785893 PMCID: PMC8579864 DOI: 10.2147/ijn.s332279] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/27/2021] [Indexed: 12/02/2022] Open
Abstract
PURPOSE There has been a substantial global market for antibodies, which are based on extracellular targets. Binding intracellular targets by antibodies will bring new chances in antibody therapeutics and a huge market increase. We aim to evaluate the efficiency of a novel delivery system of His6-metal assembly (HmA) in delivering intracellular antibodies and biofunctions of delivered antibodies. METHODS In this study, the physicochemical properties of HmA@Antibodies generated through co-assembling with antibodies and HmA were well characterized by dynamic light scatter. The cytotoxicity of HmA@Antibodies was investigated by Cell Counting Kit-8 (CCK-8). The endocytic kinetics and lysosome escape process of HmA@Antibodies were studied by flow cytometry and fluorescent staining imaging, respectively. Compared to the commercialized positive control, the intracellular delivery efficiency by HmA@Antibodies and biofunctions of delivered antibodies were evaluated by fluorescent imaging and CCK-8. RESULTS Various antibodies (IgG, anti-β-tubulin and anti-NPC) could co-assemble with HmA under a gentle condition, producing nano-sized (~150 nm) and positively charged (~+30 eV) HmA@Antibodies particles with narrow size distribution (PDI ~ 0.15). HmA displayed very low cytotoxicity to divers cells (DCs, HeLa, HCECs, and HRPE) even after 96 h for the feeding concentration ≤100 μg mL-1, and fast escape from endosomes. In the case of delivery IgG, the delivery efficiency into alive cells of HmA was better than a commercial protein delivery reagent (PULSin). For cases of the anti-β-tubulin and anti-NPC, HmA showed comparable delivery efficiency to their positive controls, but HmA with ability to deliver these antibodies into alive cells was still superior to positive controls delivering antibodies into dead cells through punching holes. CONCLUSION Our results indicate that this strategy is a feasible way to deliver various antibodies intracellularly while preserving their functions, which has great potential in various applications and treating many refractory diseases by intracellular antibody delivery.
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Affiliation(s)
- Shaoyin Wei
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, People’s Republic of China
| | - Sijie Zhou
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, People’s Republic of China
| | - Wenjuan Huang
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, People’s Republic of China
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang Province, People’s Republic of China
| | - Xingjie Zan
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, People’s Republic of China
- Oujiang Laboratory, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, Zhejiang Province, People’s Republic of China
| | - Wujun Geng
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, People’s Republic of China
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8
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Pazo M, Salluce G, Lostalé-Seijo I, Juanes M, Gonzalez F, Garcia-Fandiño R, Montenegro J. Short oligoalanine helical peptides for supramolecular nanopore assembly and protein cytosolic delivery. RSC Chem Biol 2021; 2:503-512. [PMID: 34458796 PMCID: PMC8341679 DOI: 10.1039/d0cb00103a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 11/07/2020] [Indexed: 01/09/2023] Open
Abstract
In this work we report a rational design strategy for the identification of new peptide prototypes for the non-disruptive supramolecular permeation of membranes and the transport of different macromolecular giant cargos. The approach targets a maximal enhancement of helicity in the presence of membranes with sequences bearing the minimal number of cationic and hydrophobic moieties. The here reported folding enhancement in membranes allowed the selective non-lytic translocation of different macromolecular cargos including giant proteins. The transport of different high molecular weight polymers and functional proteins was demonstrated in vesicles and in cells with excellent efficiency and optimal viability. As a proof of concept, functional monoclonal antibodies were transported for the first time into different cell lines and cornea tissues by exploiting the helical control of a short peptide sequence. This work introduces a rational design strategy that can be employed to minimize the number of charges and hydrophobic residues of short peptide carriers to achieve non-destructive transient membrane permeation and transport of different macromolecules. The helical enhancement of a short oligoalanine peptide scaffold in anionic membranes triggered the supramolecular assembly of a nanopore, which allowed the transport and release of proteins in the cytosol of cells and tissues.![]()
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Affiliation(s)
- Marta Pazo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Giulia Salluce
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Irene Lostalé-Seijo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Marisa Juanes
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Francisco Gonzalez
- Centro Singular de Investigación en Medicina Molecular y Enfermedades Crónicas (CIMUS), Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain.,Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS) and Service of Ophthalmology, Complejo Hospitalario Universitario de Santiago 15706 Santiago de Compostela Spain
| | - Rebeca Garcia-Fandiño
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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9
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Song H, Allison SJ, Brabec V, Bridgewater HE, Kasparkova J, Kostrhunova H, Novohradsky V, Phillips RM, Pracharova J, Rogers NJ, Shepherd SL, Scott P. Glycoconjugated Metallohelices have Improved Nuclear Delivery and Suppress Tumour Growth In Vivo. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hualong Song
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Simon J. Allison
- School of Applied Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Viktor Brabec
- The Czech Academy of Sciences Institute of Biophysics Kralovopolska 135 61265 Brno Czech Republic
| | | | - Jana Kasparkova
- The Czech Academy of Sciences Institute of Biophysics Kralovopolska 135 61265 Brno Czech Republic
| | - Hana Kostrhunova
- The Czech Academy of Sciences Institute of Biophysics Kralovopolska 135 61265 Brno Czech Republic
| | - Vojtech Novohradsky
- The Czech Academy of Sciences Institute of Biophysics Kralovopolska 135 61265 Brno Czech Republic
| | - Roger M. Phillips
- School of Applied Sciences University of Huddersfield Huddersfield HD1 3DH UK
| | - Jitka Pracharova
- The Czech Academy of Sciences Institute of Biophysics Kralovopolska 135 61265 Brno Czech Republic
- Department of Biophysics Centre of the Region Hana for Biotechnological and Agricultural Research Faculty of Science Palacký University Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Nicola J. Rogers
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | | | - Peter Scott
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
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10
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Song H, Allison SJ, Brabec V, Bridgewater HE, Kasparkova J, Kostrhunova H, Novohradsky V, Phillips RM, Pracharova J, Rogers NJ, Shepherd SL, Scott P. Glycoconjugated Metallohelices have Improved Nuclear Delivery and Suppress Tumour Growth In Vivo. Angew Chem Int Ed Engl 2020; 59:14677-14685. [PMID: 32489012 PMCID: PMC7497174 DOI: 10.1002/anie.202006814] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Indexed: 12/19/2022]
Abstract
Monosaccharides are added to the hydrophilic face of a self-assembled asymmetric FeII metallohelix, using CuAAC chemistry. The sixteen resulting architectures are water-stable and optically pure, and exhibit improved antiproliferative selectivity against colon cancer cells (HCT116 p53+/+ ) with respect to the non-cancerous ARPE-19 cell line. While the most selective compound is a glucose-appended enantiomer, its cellular entry is not mainly glucose transporter-mediated. Glucose conjugation nevertheless increases nuclear delivery ca 2.5-fold, and a non-destructive interaction with DNA is indicated. Addition of the glucose units affects the binding orientation of the metallohelix to naked DNA, but does not substantially alter the overall affinity. In a mouse model, the glucose conjugated compound was far better tolerated, and tumour growth delays for the parent compound (2.6 d) were improved to 4.3 d; performance as good as cisplatin but with the advantage of no weight loss in the subjects.
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Affiliation(s)
- Hualong Song
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Simon J. Allison
- School of Applied SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Viktor Brabec
- The Czech Academy of SciencesInstitute of BiophysicsKralovopolska 13561265BrnoCzech Republic
| | | | - Jana Kasparkova
- The Czech Academy of SciencesInstitute of BiophysicsKralovopolska 13561265BrnoCzech Republic
| | - Hana Kostrhunova
- The Czech Academy of SciencesInstitute of BiophysicsKralovopolska 13561265BrnoCzech Republic
| | - Vojtech Novohradsky
- The Czech Academy of SciencesInstitute of BiophysicsKralovopolska 13561265BrnoCzech Republic
| | - Roger M. Phillips
- School of Applied SciencesUniversity of HuddersfieldHuddersfieldHD1 3DHUK
| | - Jitka Pracharova
- The Czech Academy of SciencesInstitute of BiophysicsKralovopolska 13561265BrnoCzech Republic
- Department of BiophysicsCentre of the Region Hana for Biotechnological and Agricultural ResearchFaculty of SciencePalacký UniversityŠlechtitelů 2778371OlomoucCzech Republic
| | | | | | - Peter Scott
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
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11
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Fenton D, Phillips D, Maddison A, H George C, Ryves J, D Jones H. Cupid, a cell permeable peptide derived from amoeba, capable of delivering GFP into a diverse range of species. Sci Rep 2020; 10:13725. [PMID: 32792509 PMCID: PMC7426420 DOI: 10.1038/s41598-020-70532-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 07/29/2020] [Indexed: 12/14/2022] Open
Abstract
Cell permeating peptides (CPPs) are attracting great interest for use as molecular delivery vehicles for the transport of biologically active cargo across the cell membrane. The sequence of a novel CPP sequence, termed ‘Cupid’, was identified from the genome of Dictyostelium discoideum. A Cupid-Green Fluorescent Protein (Cupid-GFP) fusion protein was tested on mammalian, whole plant cells, plant leaf protoplast and fungal cell cultures and observed using confocal microscopy. GFP fluorescence builds up within the cell cytosol in 60 min, demonstrating Cupid-GFP has permeated them and folded correctly into its fluorescent form. Our combined data suggest Cupid can act as a molecular vehicle capable of delivering proteins, such as GFP, into the cytosol of a variety of cells.
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Affiliation(s)
- Daniel Fenton
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Penglais, Aberystwyth, Ceredigion, SY23 3DA, Wales, UK
| | - Dylan Phillips
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Penglais, Aberystwyth, Ceredigion, SY23 3DA, Wales, UK
| | - Anne Maddison
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Penglais, Aberystwyth, Ceredigion, SY23 3DA, Wales, UK
| | - Christopher H George
- Institute of Life Sciences, Swansea University Medical School, Singleton Park Campus, Swansea, SA2 8PP, Wales, UK
| | - Jonathan Ryves
- Cupid Peptides, Cardiff Medicentre, Heath Park, Cardiff, CF14 4UJ, Wales, UK.
| | - Huw D Jones
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Penglais, Aberystwyth, Ceredigion, SY23 3DA, Wales, UK.
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12
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Komin A, Bogorad MI, Lin R, Cui H, Searson PC, Hristova K. A peptide for transcellular cargo delivery: Structure-function relationship and mechanism of action. J Control Release 2020; 324:633-643. [PMID: 32474121 DOI: 10.1016/j.jconrel.2020.05.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/20/2020] [Indexed: 12/23/2022]
Abstract
The rate of transport of small molecule drugs across biological barriers, such as the blood-brain barrier, is often a limiting factor in achieving a therapeutic dose. One proposed strategy to enhance delivery across endothelial or epithelial monolayers is conjugation to cell-penetrating peptides (CPPs); however, very little is known about the design of CPPs for efficient transcellular transport. Here, we report on transcellular transport of a CPP, designated the CL peptide, that increases the delivery of small-molecule cargoes across model epithelium approximately 10-fold. The CL peptide contains a helix-like motif and a polyarginine tail. We investigated the effect of cargo, helix-like motif sequence, polyarginine tail length, and peptide stereochemistry on cargo delivery. We showed that there is an optimal helix-like motif sequence (RLLRLLR) and polyarginine tail length (R7) for cargo delivery. Furthermore, we demonstrated that the peptide-cargo conjugate is cleaved by cells in the epithelium at the site of a two-amino acid linker. The cleavage releases the cargo with the N-terminal linker amino acid from the peptide prior to transport out of the epithelium. These studies provide new insight into the sequence requirements for developing novel CPPs for transcellular delivery of cargo.
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Affiliation(s)
- Alexander Komin
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Maxim I Bogorad
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Ran Lin
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Honggang Cui
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Peter C Searson
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA.
| | - Kalina Hristova
- Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA.
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13
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Kumar M, Pandey S, Swami A, Wangoo N, Saima, Jain R, Sharma RK. Peptide- and Drug-Functionalized Fluorescent Quantum Dots for Enhanced Cell Internalization and Bacterial Debilitation. ACS APPLIED BIO MATERIALS 2020; 3:1913-1923. [PMID: 35025314 DOI: 10.1021/acsabm.9b01074] [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] [Indexed: 11/29/2022]
Abstract
This report illustrates a strategy for designing a nanoconjugate derived vector that efficiently delivers antimicrobial drug directly into bacterial cells. The nanoconjugate comprises of negatively charged CDTe@CdS quantum dots (QDs) with its surface functionalized using cationic BP-100 (KKLFKKILKYL-amide), a known cell-penetrating peptide (CPP), via electrostatic approach. The interactions between QD and CPP in QD-functionalized CPPs (QD-CPP) have been well analyzed using fluorescence spectroscopy, gel electrophoresis, and ζ-potential analysis. The QD-CPP conjugate was internalized into Gram negative (Escherichia coli) as well as Gram positive (Staphylococcus aureus) bacterial strains with confocal studies exhibiting a strong signal in tested microorganisms. Further, to check the applicability of QD-CPP conjugate as a delivery vector for generating an effective therapeutics, ampicillin molecules were conjugated on QD-CPP surface to generate QD-CPP-Amp conjugate. The CPP and drug molecules on the surface of QDs were well quantified using high-performance liquid chromatography (HPLC) data. It was observed that the internalization and bacterial debilitation of the QD-CPP-Amp conjugate is 2- to 4-fold effective as compared to that of bare ampicillin. The morphological changes to the bacterial cells upon the treatment with QD-CPP-Amp conjugates were noted with no cytotoxic effect on tested mammalian cell lines. The results inferred that the proposed QD-CPP vector provides a targeted and proficient approach for cellular internalization of cargo (drug) in bacterial cells with effective tracking through florescent QDs.
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Affiliation(s)
- Munish Kumar
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
| | - Satish Pandey
- Central Scientific Instruments Organisation, Chandigarh 160017, India
| | - Anuradha Swami
- Department of Applied Sciences, University Institute of Engineering & Technology (U.I.E.T.), Panjab University, Sector-25, Chandigarh 160014, India.,Centre for Nanoscience & Nanotechnology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Nishima Wangoo
- Department of Applied Sciences, University Institute of Engineering & Technology (U.I.E.T.), Panjab University, Sector-25, Chandigarh 160014, India
| | - Saima
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, Punjab 160062, India
| | - Rohit K Sharma
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160014, India
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14
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Kang Z, Ding G, Meng Z, Meng Q. The rational design of cell-penetrating peptides for application in delivery systems. Peptides 2019; 121:170149. [PMID: 31491454 DOI: 10.1016/j.peptides.2019.170149] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 12/20/2022]
Abstract
Cell penetrating peptides (CPPs) play a crucial role in the transportation of bioactive molecules. Although CPPs have been used widely in various delivery systems, further applications of CPPs are hampered by several drawbacks, such as high toxicity, low delivery efficiency, proteolytic instability and poor specificity. To design CPPs with great cell-penetrating ability, physicochemical properties and safety, researchers have tried to develop new methods to overcome the defects of CPPs. Briefly, (1) the side chain of arginine containing the guanidinium group is essential for the facilitation of cellular uptake; (2) the hydrophobic counterion complex around the guanidinium-rich backbone can "coat" the highly cationic structure with lipophilic moieties and act as an activator; (3) the conformation-constrained strategy was pursued to shield the peptide, thereby impeding access of the proteolytic enzyme; (4) targeting strategies can increase cell-type specificity of CPPs. In this review, the above four aspects were discussed in detail.
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Affiliation(s)
- Ziyao Kang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Guihua Ding
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China; Key Laboratory of Natural Resources and Functional Molecules of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin, 133002, China.
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15
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Deprey K, Becker L, Kritzer J, Plückthun A. Trapped! A Critical Evaluation of Methods for Measuring Total Cellular Uptake versus Cytosolic Localization. Bioconjug Chem 2019; 30:1006-1027. [PMID: 30882208 PMCID: PMC6527423 DOI: 10.1021/acs.bioconjchem.9b00112] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Biomolecules have many properties that make them promising for intracellular therapeutic applications, but delivery remains a key challenge because large biomolecules cannot easily enter the cytosol. Furthermore, quantification of total intracellular versus cytosolic concentrations remains demanding, and the determination of delivery efficiency is thus not straightforward. In this review, we discuss strategies for delivering biomolecules into the cytosol and briefly summarize the mechanisms of uptake for these systems. We then describe commonly used methods to measure total cellular uptake and, more selectively, cytosolic localization, and discuss the major advantages and drawbacks of each method. We critically evaluate methods of measuring "cell penetration" that do not adequately distinguish total cellular uptake and cytosolic localization, which often lead to inaccurate interpretations of a molecule's cytosolic localization. Finally, we summarize the properties and components of each method, including the main caveats of each, to allow for informed decisions about method selection for specific applications. When applied correctly and interpreted carefully, methods for quantifying cytosolic localization offer valuable insight into the bioactivity of biomolecules and potentially the prospects for their eventual development into therapeutics.
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Affiliation(s)
- Kirsten Deprey
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Lukas Becker
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Joshua Kritzer
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Andreas Plückthun
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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16
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Gallego I, Rioboo A, Reina JJ, Díaz B, Canales Á, Cañada FJ, Guerra‐Varela J, Sánchez L, Montenegro J. Glycosylated Cell‐Penetrating Peptides (GCPPs). Chembiochem 2019; 20:1400-1409. [DOI: 10.1002/cbic.201800720] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/22/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Iván Gallego
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
| | - Alicia Rioboo
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
| | - José J. Reina
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
| | - Bernardo Díaz
- Centro de Investigaciones Biológicas (CIB) del CSIC C/Ramiro de Maetzu 9, CP 28040 Madrid Spain
- Departamento de Biología Estructural y QuímicaFac. Ciencias Químicas Univ. Complutense de Madrid Avd/ Complutense s/n, CP Madrid Spain
| | - Ángeles Canales
- Departamento de Biología Estructural y QuímicaFac. Ciencias Químicas Univ. Complutense de Madrid Avd/ Complutense s/n, CP Madrid Spain
| | - F. Javier Cañada
- Centro de Investigaciones Biológicas (CIB) del CSIC C/Ramiro de Maetzu 9, CP 28040 Madrid Spain
| | - Jorge Guerra‐Varela
- Departamento de Zooloxía, Xenética e Antropoloxía FísicaFacultade de Veterinaria Universidade de Santiago de Compostela 27002 Lugo Spain
| | - Laura Sánchez
- Departamento de Zooloxía, Xenética e Antropoloxía FísicaFacultade de Veterinaria Universidade de Santiago de Compostela 27002 Lugo Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
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17
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Li S, Omi M, Cartieri F, Konkolewicz D, Mao G, Gao H, Averick SE, Mishina Y, Matyjaszewski K. Cationic Hyperbranched Polymers with Biocompatible Shells for siRNA Delivery. Biomacromolecules 2018; 19:3754-3765. [PMID: 30148627 DOI: 10.1021/acs.biomac.8b00902] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cationic hyperbranched polymers (HBP) were prepared by self-condensing vinyl polymerization of an atom transfer radical polymerization (ATRP) inimer containing a quaternary ammonium group. Two types of biocompatible shells, poly(oligoethylene glycol) methacrylate (polyOEGMA) and poly(2-(methylsulfinyl) ethyl methacrylate) (polyDMSO), were grafted respectively from HBP core to form core-shell structures with low molecular weight dispersity and high biocompatibility, polyOEGMA-HBP and polyDMSO-HBP. Both of the structures showed low cytotoxicity and good siRNA complexing ability. The efficacy of gene silencing against Runt-related transcription factor 2 ( Runx2) expression and the long-term assessment of mineralized nodule formation in osteoblast cultures were evaluated. The biocompatible core-shell structures were crucial to minimizing undesired cytotoxicity and nonspecific gene suppression. polyDMSO-HBP showed higher efficacy of forming polyplexes than polyOEGMA-HBP due to shell with lower steric hindrance. Overall, the gene silencing efficiency of both core-shell structures was comparable to commercial agent Lipofectamine, indicating long-term potential for gene silencing to treat heterotopic ossification (HO).
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Affiliation(s)
- Sipei Li
- Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue , Pittsburgh , Pennsylvania 15213 , United States
| | - Maiko Omi
- Department of Biological and Materials Sciences , University of Michigan , 1011 N. University , Ann Arbor , Michigan 48109 , United States
| | - Francis Cartieri
- Allegheny Health Network - Neuroscience Disruptive Research Lab , 320 E. North Avenue , Pittsburgh , Pennsylvania 15212 , United States
| | - Dominik Konkolewicz
- Department of Chemistry and Biochemistry , Miami University , 651 E. High Street , Oxford , Ohio 45056 , United States
| | - Gordon Mao
- Allegheny Health Network - Neuroscience Disruptive Research Lab , 320 E. North Avenue , Pittsburgh , Pennsylvania 15212 , United States
| | - Haifeng Gao
- Department of Chemistry and Biochemistry , University of Notre Dame , 305C McCourtney Hall , Notre Dame , Indiana 46556 , United States
| | - Saadyah E Averick
- Allegheny Health Network - Neuroscience Disruptive Research Lab , 320 E. North Avenue , Pittsburgh , Pennsylvania 15212 , United States
| | - Yuji Mishina
- Department of Biological and Materials Sciences , University of Michigan , 1011 N. University , Ann Arbor , Michigan 48109 , United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue , Pittsburgh , Pennsylvania 15213 , United States
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18
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Pazo M, Juanes M, Lostalé-Seijo I, Montenegro J. Oligoalanine helical callipers for cell penetration. Chem Commun (Camb) 2018; 54:6919-6922. [PMID: 29863199 DOI: 10.1039/c8cc02304b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Even for short peptides that are enriched in basic amino acids, the large chemical space that can be spanned by combinations of natural amino acids hinders the rational design of cell penetrating peptides. We here report on short oligoalanine scaffolds for the fine-tuning of peptide helicity in different media and the study of cell penetrating properties. This strategy allowed the extraction of the structure/activity features required for maximal membrane interaction and cellular penetration at minimal toxicity. These results confirmed oligoalanine helical callipers as optimal scaffolds for the rational design and the identification of cell penetrating peptides.
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Affiliation(s)
- Marta Pazo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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19
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Juanes M, Lostalé-Seijo I, Granja JR, Montenegro J. Supramolecular Recognition and Selective Protein Uptake by Peptide Hybrids. Chemistry 2018; 24:10689-10698. [DOI: 10.1002/chem.201800706] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/19/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Marisa Juanes
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Irene Lostalé-Seijo
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Juan R. Granja
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
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20
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Kang Q, Sun Z, Zou Z, Wang M, Li Q, Hu X, Li N. Cell-penetrating peptide-driven Cre recombination in porcine primary cells and generation of marker-free pigs. PLoS One 2018; 13:e0190690. [PMID: 29315333 PMCID: PMC5760039 DOI: 10.1371/journal.pone.0190690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 12/19/2017] [Indexed: 12/20/2022] Open
Abstract
Cell-penetrating peptides (CPPs) have been increasingly used to deliver various molecules, both in vitro and in vivo. However, there are no reports of CPPs being used in porcine fetal fibroblasts (PFFs). The increased use of transgenic pigs for basic research and biomedical applications depends on the availability of technologies for efficient genetic-modification of PFFs. Here, we report that three CPPs (CPP5, TAT, and R9) can efficiently deliver active Cre recombinase protein into PFFs via an energy-dependent endocytosis pathway. The three CPP–Cre proteins can enter PFFs and subsequently perform recombination with different efficiencies. The recombination efficacy of CPP5–Cre was found to be nearly 90%. The rate-limiting step for CPP–Cre-mediated recombination was the step of endosome escape. HA2 and chloroquine were found to improve the recombination efficiency of TAT–Cre. Furthermore, we successfully obtained marker-free transgenic pigs using TAT–Cre and CPP5–Cre. We provide a framework for the development of CPP-based farm animal transgenic technologies that would be beneficial to agriculture and biomedicine.
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Affiliation(s)
- Qianqian Kang
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhaolin Sun
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhiyuan Zou
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ming Wang
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Qiuyan Li
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xiaoxiang Hu
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ning Li
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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21
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Yang S, Meng Z, Kang Z, Sun C, Wang T, Feng S, Meng Q, Liu K. The structure and configuration changes of multifunctional peptide vectors enhance gene delivery efficiency. RSC Adv 2018; 8:28356-28366. [PMID: 35542475 PMCID: PMC9084241 DOI: 10.1039/c8ra04101f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/23/2018] [Indexed: 11/25/2022] Open
Abstract
We designed a series of peptide vectors that contain functional fragments with the goal of enhancing cellular internalization and gene transfection efficiency. The functional fragments included a cell-penetrating peptide (R9), a cationic amphiphilic α-helical peptide [(LLKK)3-H6 or (LLHH)3], a stearyl moiety, and cysteine residues. Vectors were also synthesized with D-type amino acids to improve their proteolytic stability. The conformations, particle sizes, and zeta potentials for complexes of these peptides with pGL3 plasmid DNA were characterized by circular dichroism and dynamic light scattering. In addition, cellular uptake of the peptide/DNA complexes and gene transfection efficiency were investigated with fluorescence-activated cell sorting and confocal laser-scanning microscopy. Greater transfection efficiency was achieved with the vectors containing the R9 segment, and the efficiency was greater than Lipo2000. In addition, the D-type C18-c(llkk)3ch6-r9 had about 7 times and 5.5 times the transfection efficiency of Lipo2000 in 293T cells and NIH-3T3 cells at the N/P ratio of 6, respectively. Overall, the multifunctional peptide gene vectors containing the R9 segment exhibited enhanced cellular internalization, a high gene transfection efficiency, and low cytotoxicity. The R9 containing peptide vectors can improve the gene transfection efficiency.![]()
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Affiliation(s)
- Sen Yang
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Ziyao Kang
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Chao Sun
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Taoran Wang
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Siliang Feng
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Keliang Liu
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
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22
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Peptide-based strategies for enhanced cell uptake, transcellular transport, and circulation: Mechanisms and challenges. Adv Drug Deliv Rev 2017; 110-111:52-64. [PMID: 27313077 DOI: 10.1016/j.addr.2016.06.002] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/27/2016] [Accepted: 06/06/2016] [Indexed: 12/12/2022]
Abstract
Peptides are emerging as a new tool in drug and gene delivery. Peptide-drug conjugates and peptide-modified drug delivery systems provide new opportunities to avoid macrophage recognition and subsequent phagocytosis, cross endothelial and epithelial barriers, and enter the cytoplasm of target cells. Peptides are relatively small, low-cost, and are stable in a wide range of biological conditions. In this review, we summarize recent work in designing peptides to enhance penetration of biological barriers, increase cell uptake, and avoid the immune system. We highlight recent successes and contradictory results, and outline common emerging concepts and design rules. The development of sequence-structure-function relationships and standard protocols for benchmarking will be a key to progress in the field.
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23
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Gasparini G, Bang EK, Montenegro J, Matile S. Cellular uptake: lessons from supramolecular organic chemistry. Chem Commun (Camb) 2016; 51:10389-402. [PMID: 26030211 DOI: 10.1039/c5cc03472h] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The objective of this Feature Article is to reflect on the importance of established and emerging principles of supramolecular organic chemistry to address one of the most persistent problems in life sciences. The main topic is dynamic covalent chemistry on cell surfaces, particularly disulfide exchange for thiol-mediated uptake. Examples of boronate and hydrazone exchange are added for contrast, comparison and completion. Of equal importance are the discussions of proximity effects in polyions and counterion hopping, and more recent highlights on ring tension and ion pair-π interactions. These lessons from supramolecular organic chemistry apply to cell-penetrating peptides, particularly the origin of "arginine magic" and the "pyrenebutyrate trick," and the currently emerging complementary "disulfide magic" with cell-penetrating poly(disulfide)s. They further extend to the voltage gating of neuronal potassium channels, gene transfection, and the delivery of siRNA. The collected examples illustrate that the input from conceptually innovative chemistry is essential to address the true challenges in biology beyond incremental progress and random screening.
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Affiliation(s)
- Giulio Gasparini
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland.
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24
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Lalitha K, Nagarajan S. Strongly fluorescent organogels and self-assembled nanostructures from pyrene coupled coumarin derivatives: application in cell imaging. J Mater Chem B 2015; 3:5690-5701. [DOI: 10.1039/c5tb00694e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present work reports facile synthesis of pyrene coupled coumarin derivatives which could form self-assembled molecular gel and nano-flakes. The nanomaterials obtained via a self-assembly process could be potentially used in fluorescence imaging applications.
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Affiliation(s)
- Krishnamoorthy Lalitha
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
| | - Subbiah Nagarajan
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
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25
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Kumar M, Singh G, Sharma S, Gupta D, Bansal V, Arora V, Bhat M, Srivastava SK, Sapra S, Kharbanda S, Dinda AK, Singh H. Intracellular delivery of peptide cargos using iron oxide based nanoparticles: studies on antitumor efficacy of a BCL-2 converting peptide, NuBCP-9. NANOSCALE 2014; 6:14473-14483. [PMID: 25340469 DOI: 10.1039/c4nr04504a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Delivering peptides into cells targeting the undruggable oncoproteins is an emerging area in cancer therapeutics. Here we report a novel nanoparticle-based delivery system that can transport therapeutic cargos to the intracellular sites without the need for a cell transduction or penetration domain (CPP). In the present study, we have used iron oxide nanoparticles to deliver an oncopeptide, NuBCP-9, targeting the BCL-2 BH3 domain. Citric acid/2-bromo 2-methylpropanoic acid (CA/BMPA)-capped SPIONs were used to immobilize and deliver the NuBCP-9 peptide to the cancer cells without any noticeable off-target effects. Our results have demonstrated that NuBCP-9-SPIONs efficiently penetrate into cancer cells and bind to its intracellular target protein BCL-2. Moreover, significant inhibition of proliferation and substantial induction of cell death were observed when cancer cells were treated with NuBCP-9-SPIONs at different time intervals. Importantly, the IC50 values for killing of breast cancer cells with NuBCP-9-SPIONs were much lower compared to cells treated with the NuBCP-9 peptide linked with a CPP (Arg-8; NuBCP-9-R8). Molecular and biochemical analyses further supported that NuBCP-9-SPIONs killed breast cancer cells by apoptosis-mediated mechanisms. Furthermore, our data demonstrated that administration of NuBCP-9-SPIONs to mice bearing Ehrlich ascites tumors (EAT) was associated with loss of tumorigenicity and extensive apoptosis in tumor tissues. Taken together, these findings show that a non-CPP-tagged peptide can be successfully delivered to undruggable intracellular oncotargets using SPIONs.
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Affiliation(s)
- Manoj Kumar
- Center for Biomedical Engineering, Indian Institute of Technology, Delhi,, Hauz Khas, New Delhi-110016, India.
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Duong T, Kim J, Ruley HE, Jo D. Cell-permeable parkin proteins suppress Parkinson disease-associated phenotypes in cultured cells and animals. PLoS One 2014; 9:e102517. [PMID: 25019626 PMCID: PMC4097392 DOI: 10.1371/journal.pone.0102517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/19/2014] [Indexed: 12/19/2022] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative disorder of complex etiology characterized by the selective loss of dopaminergic neurons, particularly in the substantia nigra. Parkin, a tightly regulated E3 ubiquitin ligase, promotes the survival of dopaminergic neurons in both PD and Parkinsonian syndromes induced by acute exposures to neurotoxic agents. The present study assessed the potential of cell-permeable parkin (CP-Parkin) as a neuroprotective agent. Cellular uptake and tissue penetration of recombinant, enzymatically active parkin was markedly enhanced by the addition of a hydrophobic macromolecule transduction domain (MTD). The resulting CP-Parkin proteins (HPM13 and PM10) suppressed dopaminergic neuronal toxicity in cells and mice exposed to 6-hydroxydopamine (6-OHDH) and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). These included enhanced survival and dopamine expression in cultured CATH.a and SH-SY5Y neuronal cells; and protection against MPTP-induced damage in mice, notably preservation of tyrosine hydroxylase-positive cells with enhanced dopamine expression in the striatum and midbrain, and preservation of gross motor function. These results demonstrate that CP-Parkin proteins can compensate for intrinsic limitations in the parkin response and provide a therapeutic strategy to augment parkin activity in vivo.
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Affiliation(s)
- Tam Duong
- Department of Biomedical Sciences, Chonnam National University Medical School, Kwangju, Korea
| | - Jaetaek Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - H. Earl Ruley
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Daewoong Jo
- Department of Biomedical Sciences, Chonnam National University Medical School, Kwangju, Korea
- ProCell R&D Institute, ProCell Therapeutics, Inc., Seoul, Korea
- * E-mail:
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27
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Marschall ALJ, Zhang C, Frenzel A, Schirrmann T, Hust M, Perez F, Dübel S. Delivery of antibodies to the cytosol: debunking the myths. MAbs 2014; 6:943-56. [PMID: 24848507 DOI: 10.4161/mabs.29268] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The use of antibodies to target their antigens in living cells is a powerful analytical tool for cell biology research. Not only can molecules be localized and visualized in living cells, but interference with cellular processes by antibodies may allow functional analysis down to the level of individual post-translational modifications and splice variants, which is not possible with genetic or RNA-based methods. To utilize the vast resource of available antibodies, an efficient system to deliver them into the cytosol from the outside is needed. Numerous strategies have been proposed, but the most robust and widely applicable procedure still remains to be identified, since a quantitative ranking of the efficiencies has not yet been done. To achieve this, we developed a novel efficiency evaluation method for antibody delivery based on a fusion protein consisting of a human IgG 1 Fc and the recombination enzyme Cre (Fc-Cre). Applied to suitable GFP reporter cells, it allows the important distinction between proteins trapped in endosomes and those delivered to the cytosol. Further, it ensures viability of positive cells and is unsusceptible to fixation artifacts and misinterpretation of cellular localization in microscopy and flow cytometry. Very low cytoplasmic delivery efficiencies were found for various profection reagents and membrane penetrating peptides, leaving electroporation as the only practically useful delivery method for antibodies. This was further verified by the successful application of this method to bind antibodies to cytosolic components in living cells.
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Affiliation(s)
- Andrea L J Marschall
- Technische Universität Braunschweig; Institute of Biochemistry, Biotechnology and Bioinformatics; Braunschweig, Germany
| | - Congcong Zhang
- Georg-Speyer-Haus; Institute for Tumor Biology und experimental Therapy; Frankfurt, Germany
| | - André Frenzel
- Technische Universität Braunschweig; Institute of Biochemistry, Biotechnology and Bioinformatics; Braunschweig, Germany
| | | | - Michael Hust
- Technische Universität Braunschweig; Institute of Biochemistry, Biotechnology and Bioinformatics; Braunschweig, Germany
| | - Franck Perez
- Institut Curie; Centre de Recherche; Paris, France; CNRS UMR144; Paris, France
| | - Stefan Dübel
- Technische Universität Braunschweig; Institute of Biochemistry, Biotechnology and Bioinformatics; Braunschweig, Germany
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28
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Bone tissue engineering: state of the union. Drug Discov Today 2014; 19:781-6. [PMID: 24768619 DOI: 10.1016/j.drudis.2014.04.010] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 04/07/2014] [Accepted: 04/15/2014] [Indexed: 02/03/2023]
Abstract
The quest to surpass the clinical efficacy of the allogeneic bone graft has had limited success, an outcome that is symbolic of tissue engineering as a whole. In this 'State of the Union'-type review, we highlight recent advances in the design of bone regenerative therapeutics using the primary elements of stem cells, growth factors and scaffolds, and identify major obstacles in their paths to the clinic. We underscore the need for rigorous performance criteria in the design of holistic tissue regenerative therapeutics, and an increased emphasis on the product production, storage and handling issues that will ultimately influence clinical success.
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29
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Kumar M, Gupta D, Singh G, Sharma S, Bhat M, Prashant CK, Dinda AK, Kharbanda S, Kufe D, Singh H. Novel polymeric nanoparticles for intracellular delivery of peptide Cargos: antitumor efficacy of the BCL-2 conversion peptide NuBCP-9. Cancer Res 2014; 74:3271-81. [PMID: 24741005 DOI: 10.1158/0008-5472.can-13-2015] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The preclinical development of peptidyl drugs for cancer treatment is hampered by their poor pharmacologic properties and cell penetrative capabilities in vivo. In this study, we report a nanoparticle-based formulation that overcomes these limitations, illustrating their utility in studies of the anticancer peptide NuBCP-9, which converts BCL-2 from a cell protector to a cell killer. NuBCP-9 was encapsulated in polymeric nanoparticles composed of a polyethylene glycol (PEG)-modified polylactic acid (PLA) diblock copolymer (NuBCP-9/PLA-PEG) or PEG-polypropylene glycol-PEG-modified PLA-tetrablock copolymer (NuBCP-9/PLA-PEG-PPG-PEG). We found that peptide encapsulation was enhanced by increasing the PEG chain length in the block copolymers. NuBCP-9 release from the nanoparticles was controlled by both PEG chain length and the PLA molecular weight, permitting time-release over sustained periods. Treatment of human cancer cells with these nanoparticles in vitro triggered apoptosis by NuBCP-9-mediated mechanism, with a potency similar to NuBCP-9 linked to a cell-penetrating poly-Arg peptide. Strikingly, in vivo administration of NuBCP-9/nanoparticles triggered complete regressions in the Ehrlich syngeneic mouse model of solid tumor. Our results illustrate an effective method for sustained delivery of anticancer peptides, highlighting the superior qualities of the novel PLA-PEG-PPG-PEG tetrablock copolymer formulation as a tool to target intracellular proteins.
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Affiliation(s)
- Manoj Kumar
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Dikshi Gupta
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Gurpal Singh
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Sapna Sharma
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Madhusudan Bhat
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - C K Prashant
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - A K Dinda
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Surender Kharbanda
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Donald Kufe
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Harpal Singh
- Authors' Affiliations: Center for Biomedical Engineering, Indian Institute of Technology, Hauz Khas; Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi; and Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
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30
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Partial somatic to stem cell transformations induced by cell-permeable reprogramming factors. Sci Rep 2014; 4:4361. [PMID: 24618595 PMCID: PMC3950638 DOI: 10.1038/srep04361] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/25/2014] [Indexed: 12/14/2022] Open
Abstract
The production of pluripotent stem cells (iPSCs) for therapeutic applications will require practical methods to achieve tight temporal and quantitative control of reprogramming factor (RF) expression, while avoiding the mutagenic potential of gene transfer. Toward this end, we have developed cell-permeable RF proteins (CP-RFs) incorporating newly developed macromolecule transduction domains (MTDs). Treatment of human dermal fibroblasts (HDFs) with combinations of cell-permeable OCT4, SOX2, KLF4, CMYC and either NANOG or LIN28 proteins induced the outgrowth of stem cell-like colonies (iSCs). iSC colonies generated with CP-RFs resembled embryonic stem cells with regard to morphology, biomarker expression, and extended capacity for self-renewal, but failed to expand as iPSC or ES cell lines. Partial reprogramming appears to be a common response to protein-based delivery of programming factors into somatic cells.
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31
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Lim J, Duong T, Lee G, Seong BL, El-Rifai W, Ruley HE, Jo D. The effect of intracellular protein delivery on the anti-tumor activity of recombinant human endostatin. Biomaterials 2013; 34:6261-71. [PMID: 23714245 DOI: 10.1016/j.biomaterials.2013.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 05/06/2013] [Indexed: 12/16/2022]
Abstract
Endostatin (ES), a 20 kDa protein derived from the carboxy-terminus of collagen XVIII is a potent angiogenesis inhibitor, but clinical development has been hindered by poor clinical efficacy and insufficient functional information from which to design agents with improved activity. The present study investigated protein uptake by cells as a determinant of ES activity. We developed a cell-permeable ES protein (HM73ES) with enhanced capacity to enter cells by adding a macromolecule transduction domain (MTD). HM73ES inhibited angiogenesis-associated phenotypes in cultured endothelial cells [as assessed by tube formation, wound-healing, cell proliferation and survival assays]. These effects were accompanied by reductions in MAPK signaling (ERK phosphorylation), and in β-Catenin, c-Myc, STAT3, and VEGF protein expression. The cell-permeable ES displayed greater tissue penetration in mice and suppressed the growth of human tumor xenografts to a significantly greater extent than ES protein without the MTD sequence. Our results suggest that anti-angiogenic activities of native ES are limited at the level of protein uptake and/or subcellular localization, and that much of the activity of ES against tumors depends on one or more intracellular functions. This study will inform future efforts to understand ES function(s) and suggest strategies for improving ES-based cancer therapeutics.
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Affiliation(s)
- Junghee Lim
- ProCell R&D Institute, ProCell Therapeutics, Inc., Seoul 151-050, Republic of Korea
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32
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Lim J, Duong T, Do N, Do P, Kim J, Kim H, El-Rifai W, Ruley HE, Jo D. Antitumor activity of cell-permeable RUNX3 protein in gastric cancer cells. Clin Cancer Res 2012; 19:680-90. [PMID: 23230322 DOI: 10.1158/1078-0432.ccr-12-2692] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
PURPOSE Gastric cancer is a leading cause of cancer death worldwide. Limited therapeutic options highlight the need to understand the molecular changes responsible for the disease and to develop therapies based on this understanding. The goal of this study was to develop cell-permeable (CP-) forms of the RUNT-related transcription factor 3, RUNX3-a candidate tumor suppressor implicated in gastric and other epithelial cancers-to study the therapeutic potential of RUNX3 in the treatment of gastric cancer. EXPERIMENTAL DESIGN We developed novel macromolecule transduction domains (MTD) which were tested for the ability to promote protein uptake by mammalian cells and tissues and used to deliver of biologically active RUNX3 into human gastric cancer cells. The therapeutic potential CP-RUNX3 was tested in the NCI-N87 human tumor xenograft animal model. RESULTS RUNX3 fusion proteins, HM(57)R and HM(85)R, containing hydrophobic MTDs enter gastric cancer cells and suppress cell phenotypes (e.g., cell-cycle progression, wounded monolayer healing, and survival) and induce changes in biomarker expression (e.g., p21(Waf1) and VEGF) consistent with previously described effects of RUNX3 on TGF-β signaling. CP-RUNX3 also suppressed the growth of subcutaneous human gastric tumor xenografts. The therapeutic response was comparable with studies augmenting RUNX3 gene expression in tumor cell lines; however, the protein was most active when administered locally, rather than systemically (i.e., intravenously). CONCLUSIONS These results provide further evidence that RUNX3 can function as a tumor suppressor and suggest that practical methods to augment RUNX3 function could be useful in treating of some types of gastric cancer.
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Affiliation(s)
- Junghee Lim
- ProCell R&D Institute, ProCell Therapeutics, Inc., Seoul, Korea
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33
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Mohammed AF, Abdul-Wahid A, Huang EHB, Bolewska-Pedyczak E, Cydzik M, Broad AE, Gariépy J. The Pseudomonas aeruginosa exotoxin A translocation domain facilitates the routing of CPP-protein cargos to the cytosol of eukaryotic cells. J Control Release 2012; 164:58-64. [PMID: 23075769 DOI: 10.1016/j.jconrel.2012.10.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 10/05/2012] [Accepted: 10/08/2012] [Indexed: 01/09/2023]
Abstract
The use of cell-penetrating peptides (CPPs), such as polyarginine, has been shown to facilitate the import of drugs and other cargos into cells. However, a major obstacle limiting their use as delivery agents is their entrapment following internalization into endocytic vesicles, leading to either their recycling out of cells or their degradation in lysosomes. To address this challenge, we fused a CPP sequence to the translocation domain of Pseudomonas aeruginosa exotoxin A (ETA) to facilitate the endosomal escape of imported CPP-containing protein constructs. Specifically, a fusion protein incorporating ten arginines linked to residues 253 to 412 of ETA (ETA(253-412)) was tested for its ability to effectively route a protein cargo (enhanced green fluorescent protein, eGFP) to the cytosol of cells. Using flow cytometry and fluorescence live-cell imaging, we observed a 5-fold improvement of cellular uptake as well as a 40-fold increase in cytosolic delivery of the CPP-ETA(253-412)-eGFP construct in relation to CPP-eGFP. Furthermore, analysis of intracellular routing events indicated that the incorporation of ETA(253-412) within the CPP-containing protein fusion construct avoided lysosomal degradation by re-directing the construct from early endosomes to the ER lumen and finally to the cytosol. Studies using inhibitors of vesicular transport confirmed that the ER lumen is a key compartment reached by the CPP-ETA(253-412)-eGFP construct before accessing the cytosol. Together, these findings suggest that incorporating a CPP motif and the ETA translocation domain into protein constructs can facilitate their cytosolic delivery.
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Affiliation(s)
- Arshiya F Mohammed
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
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34
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Appelbaum JS, LaRochelle JR, Smith BA, Balkin DM, Holub JM, Schepartz A. Arginine topology controls escape of minimally cationic proteins from early endosomes to the cytoplasm. CHEMISTRY & BIOLOGY 2012; 19:819-30. [PMID: 22840770 PMCID: PMC3488872 DOI: 10.1016/j.chembiol.2012.05.022] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Revised: 05/23/2012] [Accepted: 05/25/2012] [Indexed: 12/16/2022]
Abstract
Proteins represent an expanding class of therapeutics, but their actions are limited primarily to extracellular targets because most peptidic molecules fail to enter cells. Here we identified two small proteins, miniature protein 5.3 and zinc finger module ZF5.3, that enter cells to reach the cytosol through rapid internalization and escape from Rab5+ endosomes. The trafficking pathway mapped for these molecules differs from that of Tat and Arg(8), which require transport beyond Rab5+ endosomes to gain cytosolic access. Our results suggest that the ability of 5.3 and ZF5.3 to escape from early endosomes is a unique feature and imply the existence of distinct signals, encodable within short sequences, that favor early versus late endosomal release. Identifying these signals and understanding their mechanistic basis will illustrate how cells control the movement of endocytic cargo and may allow researchers to engineer molecules to follow a desired delivery pathway for rapid cytosolic access.
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Affiliation(s)
- Jacob S. Appelbaum
- Department of Cell Biology, Yale University, 333 Cedar Street, PO Box 208002, New Haven CT 06520-8002
| | - Jonathan R. LaRochelle
- Department of Molecular, Cellular, and Developmental Biology, Yale University, PO Box 208107, New Haven CT 06520-8107
| | - Betsy A. Smith
- Department of Molecular, Cellular, and Developmental Biology, Yale University, PO Box 208107, New Haven CT 06520-8107
| | - Daniel M. Balkin
- Department of Cell Biology, Yale University, 333 Cedar Street, PO Box 208002, New Haven CT 06520-8002
| | - Justin M. Holub
- Department of Molecular, Cellular, and Developmental Biology, Yale University, PO Box 208107, New Haven CT 06520-8107
| | - Alanna Schepartz
- Department of Molecular, Cellular, and Developmental Biology, Yale University, PO Box 208107, New Haven CT 06520-8107
- Department of Chemistry, Yale University, PO Box 208107, New Haven, CT 06520-8107
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35
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Antitumor activity of cell-permeable p18(INK4c) with enhanced membrane and tissue penetration. Mol Ther 2012; 20:1540-9. [PMID: 22617107 DOI: 10.1038/mt.2012.102] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Practical methods to deliver proteins systemically in animals have been hampered by poor tissue penetration and inefficient cytoplasmic localization of internalized proteins. We therefore pursued the development of improved macromolecule transduction domains (MTDs) and tested their ability to deliver therapeutically active p18(INK4c). MTD103 was identified from a screen of 1,500 signal peptides; tested for the ability to promote protein uptake by cells and tissues; and analyzed with regard to the mechanism of protein uptake and the delivery of biologically active p18(INK4c) into cancer cells. The therapeutic potential of cell-permeable MTD103p18(INK4c) (CP-p18(INK4c)) was tested in the HCT116 tumor xenograft model. MTD103p18(INK4c) appeared to traverse plasma membranes directly, was transferred from cell-to-cell and was therapeutically effective against cancer xenografts, inhibiting tumor growth by 86-98% after 5 weeks (P < 0.05). The therapeutic responses to CP-p18(INK4c) were accompanied by high levels of apoptosis in tumor cells. In addition to enhancing systemic delivery of CP-p18(INK4c) to normal tissues and cancer xenografts, the MTD103 sequence delayed protein clearance from the blood, liver and spleen. These results demonstrate that macromolecule intracellular transduction technology (MITT), enabled by MTDs, may provide novel protein therapies against cancer and other diseases.
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36
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Petkau-Milroy K, Sonntag MH, van Onzen AHAM, Brunsveld L. Supramolecular Polymers as Dynamic Multicomponent Cellular Uptake Carriers. J Am Chem Soc 2012; 134:8086-9. [DOI: 10.1021/ja3029075] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katja Petkau-Milroy
- Laboratory
of Chemical Biology, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Michael H. Sonntag
- Laboratory
of Chemical Biology, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Arthur H. A. M. van Onzen
- Laboratory
of Chemical Biology, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Luc Brunsveld
- Laboratory
of Chemical Biology, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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37
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Ahmad R, Alam M, Rajabi H, Kufe D. The MUC1-C oncoprotein binds to the BH3 domain of the pro-apoptotic BAX protein and blocks BAX function. J Biol Chem 2012; 287:20866-75. [PMID: 22544745 DOI: 10.1074/jbc.m112.357293] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The pro-apoptotic BAX protein contains a BH3 domain that is necessary for its dimerization and for activation of the intrinsic apoptotic pathway. The MUC1 (mucin 1) heterodimeric protein is overexpressed in diverse human carcinomas and blocks apoptosis in the response to stress. In this study, we demonstrate that the oncogenic MUC1-C subunit associates with BAX in human cancer cells. MUC1-C·BAX complexes are detectable in the cytoplasm and mitochondria and are induced by genotoxic and oxidative stress. The association between MUC1-C and BAX is supported by the demonstration that the MUC1-C cytoplasmic domain is sufficient for the interaction with BAX. The results further show that the MUC1-C cytoplasmic domain CQC motif binds directly to the BAX BH3 domain at Cys-62. Consistent with binding to the BAX BH3 domain, MUC1-C blocked BAX dimerization in response to (i) truncated BID in vitro and (ii) treatment of cancer cells with DNA-damaging agents. In concert with these results, MUC1-C attenuated localization of BAX to mitochondria and the release of cytochrome c. These findings indicate that the MUC1-C oncoprotein binds directly to the BAX BH3 domain and thereby blocks BAX function in activating the mitochondrial death pathway.
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Affiliation(s)
- Rehan Ahmad
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
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38
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Ma Y, Yang D, Ma Y, Zhang YH. Novel Cell-Penetrating Peptides Based on α-Aminoxy Acids. Chembiochem 2011; 13:73-9. [DOI: 10.1002/cbic.201100682] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Indexed: 11/06/2022]
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39
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Cho HY, Srinivasan A, Hong J, Hsu E, Liu S, Shrivats A, Kwak D, Bohaty AK, Paik HJ, Hollinger JO, Matyjaszewski K. Synthesis of Biocompatible PEG-Based Star Polymers with Cationic and Degradable Core for siRNA Delivery. Biomacromolecules 2011; 12:3478-86. [DOI: 10.1021/bm2006455] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hong Y. Cho
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Abiraman Srinivasan
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Joanna Hong
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Eric Hsu
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Shiguang Liu
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Arun Shrivats
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Dan Kwak
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew K. Bohaty
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Hyun-jong Paik
- Department of Polymer Science and Engineering, Pusan National University, Busan, South Korea
| | - Jeffrey O. Hollinger
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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40
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Aly AA, Behalo MS. Synthesis of New Peptidyl- and Glycosylpyrimidine Derivatives. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13083314900282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new series of 2- N-(phthalyl- or tosylamino acid)pyrimidines have been synthesised from the coupling of pyrimidine derivatives with phthalyl- or tosylamino acids. Hydrazinolysis of 2- N-phthalyl derivatives afforded unprotected amino acid derivatives. New derivatives of peptidylpyrimidines have been synthesised from the reaction of pyrimidine derivatives with α-amino acids methyl ester hydrochloride viz different routes. Also, new glycosides have been prepared from the reaction of pyrimidine derivatives with α-D-glucopyranosyl bromide. Most of the synthesised compounds showed a significant antimicrobial activity.
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Affiliation(s)
- Aly A. Aly
- Chemistry Department, Faculty of Science, Benha University, Benha, Egypt
| | - Mohamed S. Behalo
- Chemistry Department, Faculty of Science, Benha University, Benha, Egypt
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41
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Marschall ALJ, Frenzel A, Schirrmann T, Schüngel M, Dübel S. Targeting antibodies to the cytoplasm. MAbs 2011; 3:3-16. [PMID: 21099369 DOI: 10.4161/mabs.3.1.14110] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A growing number of research consortia are now focused on generating antibodies and recombinant antibody fragments that target the human proteome. A particularly valuable application for these binding molecules would be their use inside a living cell, e.g., for imaging or functional intervention. Animal-derived antibodies must be brought into the cell through the membrane, whereas the availability of the antibody genes from phage display systems allows intracellular expression. Here, the various technologies to target intracellular proteins with antibodies are reviewed.
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Affiliation(s)
- Andrea L J Marschall
- Technische Universität Braunschweig; Institute of Biochemistry and Biotechnology; Braunschweig, Germany
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42
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Fei L, Ren L, Zaro JL, Shen WC. The influence of net charge and charge distribution on cellular uptake and cytosolic localization of arginine-rich peptides. J Drug Target 2010; 19:675-80. [DOI: 10.3109/1061186x.2010.531729] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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43
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Iriondo-Alberdi J, Laxmi-Reddy K, Bouguerne B, Staedel C, Huc I. Cellular Internalization of Water-Soluble Helical Aromatic Amide Foldamers. Chembiochem 2010; 11:1679-85. [DOI: 10.1002/cbic.201000256] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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44
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Chen FM, Jin Y. Periodontal tissue engineering and regeneration: current approaches and expanding opportunities. TISSUE ENGINEERING PART B-REVIEWS 2010; 16:219-55. [PMID: 19860551 DOI: 10.1089/ten.teb.2009.0562] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The management of periodontal tissue defects that result from periodontitis represents a medical and socioeconomic challenge. Concerted efforts have been and still are being made to accelerate and augment periodontal tissue and bone regeneration, including a range of regenerative surgical procedures, the development of a variety of grafting materials, and the use of recombinant growth factors. More recently, tissue-engineering strategies, including new cell- and/or matrix-based dimensions, are also being developed, analyzed, and employed for periodontal regenerative therapies. Tissue engineering in periodontology applies the principles of engineering and life sciences toward the development of biological techniques that can restore lost alveolar bone, periodontal ligament, and root cementum. It is based on an understanding of the role of periodontal formation and aims to grow new functional tissues rather than to build new replacements of periodontium. Although tissue engineering has merged to create more opportunities for predictable and optimal periodontal tissue regeneration, the technique and design for preclinical and clinical studies remain in their early stages. To date, the reconstruction of small- to moderate-sized periodontal bone defects using engineered cell-scaffold constructs is technically feasible, and some of the currently developed concepts may represent alternatives for certain ideal clinical scenarios. However, the predictable reconstruction of the normal structure and functionality of a tooth-supporting apparatus remains challenging. This review summarizes current regenerative procedures for periodontal healing and regeneration and explores their progress and difficulties in clinical practice, with particular emphasis placed upon current challenges and future possibilities associated with tissue-engineering strategies in periodontal regenerative medicine.
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Affiliation(s)
- Fa-Ming Chen
- Department of Periodontology and Oral Medicine, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
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45
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Qvit N, Mochly-Rosen D. Highly Specific Modulators of Protein Kinase C Localization: Applications to Heart Failure. ACTA ACUST UNITED AC 2010; 7:e87-e93. [PMID: 21151743 DOI: 10.1016/j.ddmec.2010.07.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Heart failure (HF) in which the blood supply does not match the body's needs, affects 10% of the population over 65 years old. The protein kinase C (PKC) family of kinases has a key role in normal and disease states. Here we discuss the role of PKC in HF and focus on the use of specific PKC regulators to identify the mechanism leading to this Pathology and potential leads for therapeutics.
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Affiliation(s)
- Nir Qvit
- Department of Chemical and Systems Biology, Stanford University, School of Medicine, Stanford CA 94305-5174
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46
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Antoniou X, Borsello T. Cell Permeable Peptides: A Promising Tool to Deliver Neuroprotective Agents in the Brain. Pharmaceuticals (Basel) 2010; 3:379-392. [PMID: 27713257 PMCID: PMC4033915 DOI: 10.3390/ph3020379] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Revised: 01/20/2010] [Accepted: 01/28/2010] [Indexed: 12/03/2022] Open
Abstract
The inability of most drugs to cross the blood-brain barrier and/or plasma membrane limits their use for biomedical applications in the brain. Cell Permeable Peptides (CPPs) overcome this problem and are effective in vivo, crossing the plasma membrane and the blood-brain barrier. CPPs deliver a wide variety of compounds intracellularly in an active form. In fact, many bioactive cargoes have neuroprotective properties, and due to their ability to block protein-protein interactions, offer exciting perspectives in the clinical setting. In this review we give an overview of the Cell Permeable Peptides strategy to deliver neuroprotectants against neurodegeneration in the CNS.
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Affiliation(s)
- Xanthi Antoniou
- Istituto di Ricerche Farmacologiche "Mario Negri", Via La Masa 19, 20157 Milano, Italy.
| | - Tiziana Borsello
- Istituto di Ricerche Farmacologiche "Mario Negri", Via La Masa 19, 20157 Milano, Italy.
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47
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Antimicrobial compounds produced by Lactobacillus sakei subsp. sakei 2a, a bacteriocinogenic strain isolated from a Brazilian meat product. J Ind Microbiol Biotechnol 2009; 37:381-90. [DOI: 10.1007/s10295-009-0684-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Accepted: 12/10/2009] [Indexed: 10/20/2022]
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48
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Joshi MD, Ahmad R, Yin L, Raina D, Rajabi H, Bubley G, Kharbanda S, Kufe D. MUC1 oncoprotein is a druggable target in human prostate cancer cells. Mol Cancer Ther 2009; 8:3056-65. [PMID: 19887552 DOI: 10.1158/1535-7163.mct-09-0646] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Human prostate cancers are dependent on the androgen receptor for their progression. The MUC1 heterodimeric oncoprotein is aberrantly overexpressed in prostate cancers; however, it is not known if MUC1 is of functional importance to these tumors. To assess dependence on MUC1, we synthesized an inhibitor, designated GO-201, which interacts directly with the MUC1-C subunit at its oligomerization domain. Treatment of MUC1-positive DU145 and PC3 prostate cancer cells with GO-201, and not an altered version, resulted in inhibition of proliferation. GO-201 also induced necrotic cell death that was associated with increases in reactive oxygen species, loss of mitochondrial transmembrane potential, and depletion of ATP. By contrast, GO-201 had no effect against MUC1-negative LNCaP, CWR22Rv1, and MDA-PCa-2b prostate cancer cells. Significantly, GO-201 treatment of DU145 and PC3 xenografts growing in nude mice resulted in complete tumor regression and prolonged lack of recurrence. These findings indicate that certain prostate cancer cells are dependent on MUC1-C for growth and survival and that directly targeting MUC1-C results in their death in vitro and in tumor models.
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Affiliation(s)
- Maya Datt Joshi
- Dana-Farber Cancer Institute, Dana 830, Boston, MA 02115, USA
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49
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Kontopidis G, Andrews MJ, McInnes C, Plater A, Innes L, Renachowski S, Cowan A, Fischer PM. Truncation and optimisation of peptide inhibitors of cyclin-dependent kinase 2-cyclin a through structure-guided design. ChemMedChem 2009; 4:1120-8. [PMID: 19472269 DOI: 10.1002/cmdc.200900093] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Peptides that inhibit cyclin-dependent kinase 2 by blocking the macromolecular substrate recruitment site of cyclin A were simplified, for example, by replacement of dipeptide units with beta-amino acids. The smallest inhibitor retaining activity was a tripeptide, whose binding mode was confirmed by X-ray crystallography. This result suggests that nonpeptidic cyclin groove inhibitors may be feasible therapeutic agents.The cyclin-dependent kinase 2-cyclin A complex is an important regulator of the DNA-synthesis phase of the mammalian cell cycle, which is frequently deregulated in cancer. Rather than blocking the ATP-binding site of the apparently redundant kinase subunit, targeting the binding site for macromolecular substrates and regulatory proteins of cyclin A represents a promising strategy to enforce tumour-selective apoptosis. The cyclin-binding groove can be blocked with comparatively small synthetic peptides, which indirectly leads to inhibition of kinase function, but these peptides are metabolically labile and membrane impermeable. As part of our ongoing effort to develop more druglike peptidomimetics derived from cyclin-groove-binding peptides, we report the results of our studies aimed at a detailed understanding of the structural determinants required for effective binding. Using a combination of peptide synthesis, biochemical assays and X-ray crystallography, we show that it is possible to simplify peptide structures through the replacement of dipeptide units in which one of the residues is not directly involved in binding, through the introduction of beta-amino acid residues that retain only the dipeptide residue side chain that is important for binding. This approach also allowed us to probe spatial constraints in general, as well as the importance of peptide backbone hydrogen-bonding functions. Our identification of potent beta-homoleucine-containing tetrapeptide inhibitors, as well as the finding that an optimised N-terminally acetylated tripeptide retains some cyclin A-binding affinity, suggest that the pharmacological targeting of the cyclin A binding groove may be feasible.
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50
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Bertrand JR, Malvy C, Auguste T, Tóth GK, Kiss-Ivánkovits O, Illyés E, Hollósi M, Bottka S, Laczkó I. Synthesis and studies on cell-penetrating peptides. Bioconjug Chem 2009; 20:1307-14. [PMID: 19552459 DOI: 10.1021/bc900005j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The ability of different synthetic cell penetrating peptides, as Antennapedia (wild and Phe(6) mutated penetratins), flock house virus, and integrin peptides to form complexes with a 25mer antisense oligonucleotide was compared and their conformation was determined by circular dichroism spectroscopy. The efficiency for oligonucleotide delivery into cells was measured using peptides labeled with a coumarin derivative showing blue fluorescence and the fluorescein-labeled antisense oligonucleotide showing green fluorescence. Fluorescence due to the excitation energy transfer confirmed the interaction of the antisense oligonucleotide and cell-penetrating peptides. The most efficient oligonucleotide delivery was found for penetratins. Comparison of the two types of penetratins shows that the wild-type penetratin proved to be more efficient than mutated penetratin. The paper also emphasizes that the attachment of a fluorescent label may have an effect on the conformation and flexibility of cell-penetrating peptides that must be taken into consideration when evaluating biological experiments.
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Affiliation(s)
- Jean-Remi Bertrand
- Institute Gustave Roussy, CNRS UMR 8121, University Paris 11, Villejuif, France
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