1
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Ghosh P. Boronic Acid-Linked Cell-Penetrating Peptide for Protein Delivery. ACS OMEGA 2024; 9:19051-19056. [PMID: 38708278 PMCID: PMC11064025 DOI: 10.1021/acsomega.3c09689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/13/2024] [Accepted: 04/08/2024] [Indexed: 05/07/2024]
Abstract
Studying functional protein delivery into live cells is important, ranging from fundamental research to therapeutics. Cell-penetrating peptides (CPPs) are known to deliver proteins with applauded efficacy and have gained importance for applications in protein therapeutics and exploration of versatile cellular mechanisms. The primary aim of the work is to design a CPP as a tool and delivery vehicle for macromolecules, including proteins. In this work, boronic acid-linked cyclic deca arginine (cR10) is reported as an efficient CPP that exhibited 3-fold higher delivery of chemically synthesized ubiquitin (Ub) than pristine cR10-linked Ub, examined with live U2OS cells. As a futuristic plan, an artificial intelligence machine learning-based rationale has been designed and proposed.
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2
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Arafiles JV, Franke J, Franz L, Gómez-González J, Kemnitz-Hassanin K, Hackenberger CPR. Cell-Surface-Retained Peptide Additives for the Cytosolic Delivery of Functional Proteins. J Am Chem Soc 2023; 145. [PMID: 37906525 PMCID: PMC10655119 DOI: 10.1021/jacs.3c05365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/02/2023] [Accepted: 10/02/2023] [Indexed: 11/02/2023]
Abstract
The delivery of functional proteins remains a major challenge in advancing biological and pharmaceutical sciences. Herein, we describe a powerful, simple, and highly effective strategy for the intracellular delivery of functional cargoes. Previously, we demonstrated that cell-penetrating peptide (CPP) additives equipped with electrophilic thiol-reactive moieties temporarily attach to the cellular membrane, thereby facilitating the cellular uptake of protein- and antibody-CPP cargoes through direct membrane transduction at low concentrations. Now, we hypothesize that CPP-additives with an increased retention on the cellular membrane will further enhance intracellular uptake. We discovered that adding a small hydrophobic peptide sequence to an arginine-rich electrophilic CPP-additive further improved the uptake of protein-CPP conjugates, whereas larger hydrophobic anchors showed increased cytotoxicity. Cell viability and membrane integrity measurements, structure-activity relationship studies, and quantitative evaluation of protein-CPP uptake revealed important design principles for cell-surface-retained CPP-additives. These investigations allowed us to identify a nontoxic, thiol-reactive CPP-additive containing the hydrophobic ILFF sequence, which can deliver fluorescent model proteins at low micromolar concentrations. This hydrophobic CPP-additive allowed the addition of protein cargoes for intracellular delivery after initial additive incubation. Time-lapse fluorescence microscopy and membrane tension analysis of cells treated with fluorescent ILFF-CPP-additives supported the claim of increased cell surface retention and suggested that the protein-CPP cargoes enter the cell through a mechanism involving lowered cell membrane tension. Finally, we demonstrated that our newly engineered hydrophobic CPP-additive enabled the uptake of a functional macrocyclic peptidic MDM2-inhibitor and a recombinant genome editing protein. This indicates that the developed hydrophobic CPP-additive holds promise as a tool to enhance the intracellular delivery of peptide and protein cargoes.
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Affiliation(s)
- Jan Vincent
V. Arafiles
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
| | - Jonathan Franke
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
- Institut
für Chemie, Humboldt Universität
zu Berlin, Brook-Taylor-Str.
2, Berlin 12489, Germany
| | - Luise Franz
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Berlin 14195, Germany
| | - Jacobo Gómez-González
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
| | - Kristin Kemnitz-Hassanin
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
| | - Christian P. R. Hackenberger
- Leibniz-Forschungsinstitut
für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, Berlin 13125, Germany
- Institut
für Chemie, Humboldt Universität
zu Berlin, Brook-Taylor-Str.
2, Berlin 12489, Germany
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3
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Zhao M, Tan X, Liu ZQ, Dou L, Liu D, Pan YJ, Ma YF, Yu JL. Engineered phage with cell-penetrating peptides for intracellular bacterial infections. mSystems 2023; 8:e0064623. [PMID: 37594262 PMCID: PMC10654057 DOI: 10.1128/msystems.00646-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 07/14/2023] [Indexed: 08/19/2023] Open
Abstract
IMPORTANCE Salmonella infection is a significant threat to global public health, and the increasing prevalence of antibiotic resistance exacerbates the situation. Therefore, finding new and effective ways to combat this pathogen is essential. Phages are natural predators of bacteria and can be used as an alternative to antibiotics to kill specific bacteria, including drug-resistant strains. One significant limitation of using phages as antimicrobial agents is their low cellular uptake, which limits their effectiveness against intracellular bacterial infections. Therefore, finding ways to enhance phage uptake is crucial. Our study provides a straightforward strategy for displaying cell-penetrating peptides on non-model phages, offering a promising novel and effective therapeutic approach for treating intracellular and drug-resistant bacteria. This approach has the potential to address the global challenge of antibiotic resistance and improve public health outcomes.
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Affiliation(s)
- Min Zhao
- Department of Neonatology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Xin Tan
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Zi-qiang Liu
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Lei Dou
- Department of Neonatology, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Dong Liu
- Department of Neonatology, Shenzhen People’s Hospital, Shenzhen, China
| | - Yong-jun Pan
- Department of Critical Care Medicine, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Ying-fei Ma
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Jia-lin Yu
- Department of Neonatology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing Key Laboratory of Pediatrics, Chongqing, China
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4
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Liang LJ, Wang Y, Hua X, Yuan R, Xia Q, Wang R, Li C, Chu GC, Liu L, Li YM. Cell-Permeable Stimuli-Responsive Ubiquitin Probe for Time-Resolved Monitoring of Substrate Ubiquitination in Live Cells. JACS AU 2023; 3:2873-2882. [PMID: 37885572 PMCID: PMC10598832 DOI: 10.1021/jacsau.3c00421] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023]
Abstract
Dynamic monitoring of intracellular ubiquitin (Ub) conjugates is instrumental to understanding the Ub regulatory machinery. Although many biochemical approaches have been developed to characterize protein ubiquitination, chemical tools capable of temporal resolution probing of ubiquitination events remain to be developed. Here, we report the development of the first cell-permeable and stimuli-responsive Ub probe and its application for the temporal resolution profiling of ubiquitinated substrates in live cells. The probe carrying the photolabile group N-(2-nitrobenzyl)-Gly (Nbg) on the amide bond between Ub Gly75 and Gly76 is readily prepared through chemical synthesis and can be delivered to live cells by conjugation via a disulfide bond with the cyclic cell-penetrating peptide cR10D (i.e., 4-((4-(dimethylamino)phenyl)-azo)-benzoic acid-modified cyclic deca-arginine). Both in vitro and in vivo experiments showed that Ub-modifying enzymes (E1, E2s, and E3s) could not install the Ub probe onto substrate proteins prior to removal of the nitrobenzyl group, which was easily accomplished via photoirradiation. The utility and practicality of this probe were exemplified by the time-resolved biochemical and proteomic investigation of ubiquitination events in live cells during a H2O2-mediated oxidative stress response. This work shows a conceptually new family of chemical Ub tools for the time-resolved studies on dynamic protein ubiquitination in different biological processes and highlights the utility of modern chemical protein synthesis in obtaining custom-designed tools for biological studies.
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Affiliation(s)
- Lu-Jun Liang
- Tsinghua-Peking Center for Life Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Center for BioAnalytical Chemistry, Hefei National Laboratory of Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yu Wang
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Xiao Hua
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Rujing Yuan
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Qiong Xia
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Rongtian Wang
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Chuntong Li
- Tsinghua-Peking Center for Life Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Center for BioAnalytical Chemistry, Hefei National Laboratory of Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Guo-Chao Chu
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
- Tsinghua-Peking Center for Life Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Lei Liu
- Tsinghua-Peking Center for Life Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Center for BioAnalytical Chemistry, Hefei National Laboratory of Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yi-Ming Li
- School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
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5
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Ghosh P, Banerjee P. Drug delivery using biocompatible covalent organic frameworks (COFs) towards a therapeutic approach. Chem Commun (Camb) 2023; 59:12527-12547. [PMID: 37724444 DOI: 10.1039/d3cc01829f] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Covalent organic frameworks (COFs) are constructed exclusively with lightweight organic scaffolds, which can have a 2D or 3D architecture. The ease of synthesis, robust skeleton and tunable properties of COFs make them superior candidates among their counterparts for a wide range of uses including biomedical applications. In the biomedical field, drug delivery or photodynamic-photothermal (PDT-PTT) therapy can be individually considered a potential parameter to be investigated. Therefore, this comprehensive review is focused on drug delivery using COFs, highlighting the encapsulation and decapsulation of drugs by COF scaffolds and their delivery in biological media including live cells. Versatile COF scaffolds together with the delivery of several drug molecules are considered. We attempted to incorporate the status of drug encapsulation and decapsulation considering a wide range of recent publications.
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Affiliation(s)
- Pritam Ghosh
- Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology, Chennai Campus, Chennai 600127, Tamilnadu, India.
| | - Priyabrata Banerjee
- Electric Mobility and Tribology Research Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, India.
- Academy of Scientific and Innovative Research (AcSIR), AcSIR Headquarters CSIR-HRDC Campus, Ghaziabad 201002, Uttarpradesh, India
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6
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Sun Z, Huang J, Fishelson Z, Wang C, Zhang S. Cell-Penetrating Peptide-Based Delivery of Macromolecular Drugs: Development, Strategies, and Progress. Biomedicines 2023; 11:1971. [PMID: 37509610 PMCID: PMC10377493 DOI: 10.3390/biomedicines11071971] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Cell-penetrating peptides (CPPs), developed for more than 30 years, are still being extensively studied due to their excellent delivery performance. Compared with other delivery vehicles, CPPs hold promise for delivering different types of drugs. Here, we review the development process of CPPs and summarize the composition and classification of the CPP-based delivery systems, cellular uptake mechanisms, influencing factors, and biological barriers. We also summarize the optimization routes of CPP-based macromolecular drug delivery from stability and targeting perspectives. Strategies for enhanced endosomal escape, which prolong its half-life in blood, improved targeting efficiency and stimuli-responsive design are comprehensively summarized for CPP-based macromolecule delivery. Finally, after concluding the clinical trials of CPP-based drug delivery systems, we extracted the necessary conditions for a successful CPP-based delivery system. This review provides the latest framework for the CPP-based delivery of macromolecular drugs and summarizes the optimized strategies to improve delivery efficiency.
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Affiliation(s)
- Zhe Sun
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Zvi Fishelson
- Department of Cell and Developmental Biology, Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Chenhui Wang
- Department of Cell Biology, School of Medicine, Nankai University, Tianjin 300071, China
| | - Sihe Zhang
- Department of Cell Biology, School of Medicine, Nankai University, Tianjin 300071, China
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7
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Soltész D, Szabó I, Bánóczi Z. The Balance between Hydrophobicity/Aromaticity and Positively Charged Residues May Influence the Cell Penetration Ability. Pharmaceutics 2023; 15:pharmaceutics15041267. [PMID: 37111751 PMCID: PMC10146604 DOI: 10.3390/pharmaceutics15041267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/05/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Cell-penetrating peptides (CPPs) are commonly modified to increase their cellular uptake, alter the mechanism of penetration or enhance their endosomal release. Earlier, we described the internalization enhancement ability of the 4-((4-(dimethylamino)phenyl)azo)benzoyl (Dabcyl) group. We proved that this modification on the N-terminus of tetra- and hexaarginine enhanced their cellular uptake. The introduction of an aromatic ring 4-(aminomethyl) benzoic acid, AMBA) into the peptide backbone has a synergistic effect with Dabcyl, and the tetraarginine derivatives had outstanding cellular uptake. Based on these results, the effect of Dabcyl or Dabcyl-AMBA modification on the internalization of oligoarginines was studied. Oligoarginines were modified with these groups and their internalization was measured using flow cytometry. The concentration dependence of the cellular uptake of selected constructs was compared too. Their internalization mechanism was also examined by using different endocytosis inhibitors. While the effect of the Dabcyl group was optimal for hexaarginine, the Dabcyl-AMBA group increased the cellular uptake in the case of all oligoarginines. All derivatives, with the exception of only tetraarginine, were more effective than the octaarginine control. The internalization mechanism was dependent on the size of the oligoarginine and was independent of the modification. Our findings suggest that these modifications enhanced the internalization of oligoarginines and resulted in novel, very effective CPPs.
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Affiliation(s)
- Dóra Soltész
- Department of Organic Chemistry, Eötvös L. University, 1117 Budapest, Hungary
| | - Ildikó Szabó
- ELKH-ELTE Research Group of Peptide Chemistry, 1117 Budapest, Hungary
| | - Zoltán Bánóczi
- Department of Organic Chemistry, Eötvös L. University, 1117 Budapest, Hungary
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8
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Zmudzinski M, Malon O, Poręba M, Drąg M. Imaging of proteases using activity-based probes. Curr Opin Chem Biol 2023; 74:102299. [PMID: 37031620 DOI: 10.1016/j.cbpa.2023.102299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/24/2023] [Accepted: 03/08/2023] [Indexed: 04/11/2023]
Abstract
Proteases (proteolytic enzymes) are proteins that catalyze one of the most important biochemical reactions, namely the hydrolysis of the peptide bond in peptide and protein substrates. Therefore these molecular biocatalysts participate in virtually all living processes. The proper balance between intact and processed protease substrates enables to maintenance of homeostasis from a single-cell level to the whole living system. However, when the proteolytic activity is altered, this delicate balance is disturbed, which might lead to the development of a plethora of diseases. Given this, monitoring proteolytic activity is indispensable to understanding how proteases operate in disease lesions and how their altered catalytic activity might be harnessed for a better diagnosis and treatment. In this manuscript, we provide a critical review of the recent development of protease chemical probes which are small molecules that detect proteolytic activity by interacting with protease active site, individual proteases as well as complex proteolytic networks.
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Affiliation(s)
- Mikolaj Zmudzinski
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland
| | - Oliwia Malon
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland
| | - Marcin Poręba
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland.
| | - Marcin Drąg
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland.
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9
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Wyatt J, Chan YK, Hess M, Tavassoli M, Müller MM. Semisynthesis reveals apoptin as a tumour-selective protein prodrug that causes cytoskeletal collapse. Chem Sci 2023; 14:3881-3892. [PMID: 37035694 PMCID: PMC10074440 DOI: 10.1039/d2sc04481a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 03/15/2023] [Indexed: 03/18/2023] Open
Abstract
Apoptin is a small viral protein capable of inducing cell death selectively in cancer cells. Despite its potential as an anticancer agent, relatively little is known about its mechanism of toxicity and cancer-selectivity. Previous experiments suggest that cancer-selective phosphorylation modulates apoptin toxicity, although a lack of chemical tools has hampered the dissection of underlying mechanisms. Here, we describe structure-function studies with site-specifically phosphorylated apoptin (apoptin-T108ph) in living cells which revealed that Thr108 phosphorylation is the selectivity switch for apoptin toxicity. Mechanistic investigations link T108ph to actin binding, cytoskeletal disruption and downstream inhibition of anoikis-resistance as well as cancer cell invasion. These results establish apoptin as a protein pro-drug, selectively activated in cancer cells by phosphorylation, which disrupts the cytoskeleton and promotes cell death. We anticipate that this mechanism provides a framework for the design of next generation anticancer proteins with enhanced selectivity and potency.
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Affiliation(s)
- Jasmine Wyatt
- Department of Molecular Oncology, King's College London Guy's Hospital Campus, Hodgkin Building London SE1 1UL UK
- Department of Chemistry, King's College London Britannia House, 7 Trinity Street London SE1 1DB UK
| | - Yuen Ka Chan
- Department of Molecular Oncology, King's College London Guy's Hospital Campus, Hodgkin Building London SE1 1UL UK
| | - Mateusz Hess
- Department of Chemistry, King's College London Britannia House, 7 Trinity Street London SE1 1DB UK
| | - Mahvash Tavassoli
- Department of Molecular Oncology, King's College London Guy's Hospital Campus, Hodgkin Building London SE1 1UL UK
| | - Manuel M Müller
- Department of Chemistry, King's College London Britannia House, 7 Trinity Street London SE1 1DB UK
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10
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Wang Y, Li C, Zhuo J, Hui H, Zhou B, Tian J. The Detection of Divalent Iron and Reactive Oxygen Species During Ferroptosis with the Use of a Dual-Reaction Turn-On Fluorescent Probe. Mol Imaging Biol 2023; 25:423-434. [PMID: 36195741 DOI: 10.1007/s11307-022-01774-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/19/2022] [Accepted: 09/12/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Ferroptosis, a programmed cell death modality, is an iron-dependent, non-apoptosis pathway that is characterized by the upregulation of divalent iron and reactive oxygen species (ROS) levels. However, the sensitive and rapid detection to track changes in ferroptosis is challenging, partially due to the lack of methods for monitoring the Fe(II) accumulation and ROS generation. PROCEDURES Herein, we reported a dual-reaction fluorescent probe DR-1 with turn-on response, which realized the simultaneous visualizing of Fe(II) and ROS with a single probe. The structure of fluorescence quenching group and turn-on fluorophore constitute a double switch for DR-1, which increases its specificity and stability. RESULTS During ferroptotic cell death, the upregulation of ROS levels led to the cleavage of quenching group of DR-1, and the aggregation of Fe(II) resulting in fluorescence recovery. CONCLUSIONS Overall, this study provides a new dual-reaction probe that shows the great potential to explore the mechanism of ferroptosis in vitro and in vivo by fluorescence imaging.
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Affiliation(s)
- Yueqi Wang
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Changjian Li
- School of Engineering Medicine, Beihang University, Beijing, 100191, China
- Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology, Beijing, 100191, China
| | - Jiaming Zhuo
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hui Hui
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Bing Zhou
- School of Engineering Medicine, Beihang University, Beijing, 100191, China.
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- School of Engineering Medicine, Beihang University, Beijing, 100191, China.
- Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology, Beijing, 100191, China.
- Zhuhai Precision Medical Center, Zhuhai People's Hospital, Affiliated With Jinan University, Zhuhai, 519000, China.
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11
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Harel O, Jbara M. Chemical Synthesis of Bioactive Proteins. Angew Chem Int Ed Engl 2023; 62:e202217716. [PMID: 36661212 DOI: 10.1002/anie.202217716] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/21/2023]
Abstract
Nature has developed a plethora of protein machinery to operate and maintain nearly every task of cellular life. These processes are tightly regulated via post-expression modifications-transformations that modulate intracellular protein synthesis, folding, and activation. Methods to prepare homogeneously and precisely modified proteins are essential to probe their function and design new bioactive modalities. Synthetic chemistry has contributed remarkably to protein science by allowing the preparation of novel biomacromolecules that are often challenging or impractical to prepare via common biological means. The ability to chemically build and precisely modify proteins has enabled the production of new molecules with novel physicochemical properties and programmed activity for biomedical research, diagnostic, and therapeutic applications. This minireview summarizes recent developments in chemical protein synthesis to produce bioactive proteins, with emphasis on novel analogs with promising in vitro and in vivo activity.
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Affiliation(s)
- Omer Harel
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Muhammad Jbara
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
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12
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Discovery of endosomalytic cell-penetrating peptides based on bacterial membrane-targeting sequences. Bioorg Chem 2023; 134:106424. [PMID: 36868126 DOI: 10.1016/j.bioorg.2023.106424] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/05/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023]
Abstract
Cell-penetrating peptides (CPPs) are prominent scaffolds for drug developments and related research, particularly the endocytic delivery of biomacromolecules. Effective cargo release from endosomes prior to lysosomal degradation is a crucial step, where the rational design and selection of CPPs remains a challenge and calls for deeper mechanistic understandings. Here, we have investigated a strategy of designing CPPs that selectively disrupt endosomal membranes based on bacterial membrane targeting sequences (MTSs). Six synthesized MTS peptides all exhibit cell-penetrating abilities, among which two d-peptides (d-EcMTS and d-TpMTS) are able to escape from endosomes and localize at ER after entering the cell. The utility of this strategy has been demonstrated by the intracellular delivery of green fluorescent protein (GFP). Together, these results suggest that the large pool of bacterial MTSs may be a rich source for the development of novel CPPs.
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13
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Gorka M, Magnussen HM, Kulathu Y. Chemical biology tools to study Deubiquitinases and Ubl proteases. Semin Cell Dev Biol 2022; 132:86-96. [PMID: 35216867 DOI: 10.1016/j.semcdb.2022.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 12/15/2022]
Abstract
The reversible attachment of ubiquitin (Ub) and ubiquitin like modifiers (Ubls) to proteins are crucial post-translational modifications (PTMs) for many cellular processes. Not only do cells possess hundreds of ligases to mediate substrate specific modification with Ub and Ubls, but they also have a repertoire of more than 100 dedicated enzymes for the specific removal of ubiquitin (Deubiquitinases or DUBs) and Ubl modifications (Ubl-specific proteases or ULPs). Over the past two decades, there has been significant progress in our understanding of how DUBs and ULPs function at a molecular level and many novel DUBs and ULPs, including several new DUB classes, have been identified. Here, the development of chemical tools that can bind and trap active DUBs has played a key role. Since the introduction of the first activity-based probe for DUBs in 1986, several innovations have led to the development of more sophisticated tools to study DUBs and ULPs. In this review we discuss how chemical biology has led to the development of activity-based probes and substrates that have been invaluable to the study of DUBs and ULPs. We summarise our currently available toolbox, highlight the main achievements and give an outlook of how these tools may be applied to gain a better understanding of the regulatory mechanisms of DUBs and ULPs.
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Affiliation(s)
- Magdalena Gorka
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Helge Magnus Magnussen
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Yogesh Kulathu
- Medical Research Council Protein Phosphorylation & Ubiquitylation Unit (MRC-PPU), School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK.
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14
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Huppelschoten Y, van der Heden van Noort GJ. State of the art in (semi-)synthesis of Ubiquitin- and Ubiquitin-like tools. Semin Cell Dev Biol 2022; 132:74-85. [PMID: 34961664 DOI: 10.1016/j.semcdb.2021.11.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 12/14/2022]
Abstract
Protein ubiquitination is a key post-translational modification in regulating many fundamental cellular processes and dysregulation of these processes can give rise to a vast array of diseases. Unravelling the molecular mechanisms of ubiquitination hence is an important area in current ubiquitin research with as aim to understand this enigmatic process. The complexity of ubiquitin (Ub) signaling arises from the large variety of Ub conjugates, where Ub is attached to other Ub proteins, Ub-like proteins, and protein substrates. The chemical preparation of such Ub conjugates in high homogeneity and in adequate amounts contributes greatly to the deciphering of Ub signaling. The strength of these chemically synthesized conjugates lies in the chemo-selectivity in which they can be created that are sometimes difficult to obtain using biochemical methodology. In this review, we will discuss the progress in the chemical protein synthesis of state-of-the-art Ub and Ub-like chemical probes, their unique concepts and related discoveries in the ubiquitin field.
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Affiliation(s)
- Yara Huppelschoten
- Oncode Institute and Dept. Cell and Chemical Biology, Leiden University Medical Centre, Leiden, The Netherlands; Global Research Technologies, Novo Nordisk Research Park, Måløv, Denmark
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15
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Saha A, Mandal S, Arafiles JVV, Gómez‐González J, Hackenberger CPR, Brik A. Structure-Uptake Relationship Study of DABCYL Derivatives Linked to Cyclic Cell-Penetrating Peptides for Live-Cell Delivery of Synthetic Proteins. Angew Chem Int Ed Engl 2022; 61:e202207551. [PMID: 36004945 PMCID: PMC9828537 DOI: 10.1002/anie.202207551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 01/12/2023]
Abstract
Modifying cyclic cell-penetrating deca-arginine (cR10) peptides with 4-(4-dimethylaminophenylazo)benzoic acid (DABCYL) improves the uptake efficiency of synthetic ubiquitin (Ub) cargoes into living cells. To probe the role of the DABCYL moiety, we performed time-lapse microscopy and fluorescence lifetime imaging microscopy (FLIM) of fluorescent DABCYL-R10 to evaluate the impact on cell entry by the formation of nucleation zones. Furthermore, we performed a structure-uptake relationship study with 13 DABCYL derivatives coupled to CPP to examine their effect on the cell-uptake efficiency when conjugated to mono-Ub through disulfide linkages. Our results show that through structure variations of the DABCYL moiety alone we could reach, at nanomolar concentration, an additional threefold increase in the cytosolic delivery of Ub, which will enable studies on various intracellular processes related to Ub signaling.
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Affiliation(s)
- Abhishek Saha
- Schulich Faculty of ChemistryTechnion-Israel Institute of TechnologyHaifa3200008Israel
| | - Shaswati Mandal
- Schulich Faculty of ChemistryTechnion-Israel Institute of TechnologyHaifa3200008Israel
| | - Jan Vincent V. Arafiles
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Strasse 10Berlin13125Germany
| | - Jacobo Gómez‐González
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Strasse 10Berlin13125Germany
| | - Christian P. R. Hackenberger
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Strasse 10Berlin13125Germany
- Department of ChemistryHumboldt Universität zu BerlinBrook-Taylor-Str.2Berlin12489Germany
| | - Ashraf Brik
- Schulich Faculty of ChemistryTechnion-Israel Institute of TechnologyHaifa3200008Israel
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16
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First direct evidence for direct cell-membrane penetrations of polycationic homopoly(amino acid)s produced by bacteria. Commun Biol 2022; 5:1132. [PMID: 36289442 PMCID: PMC9606270 DOI: 10.1038/s42003-022-04110-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/13/2022] [Indexed: 11/08/2022] Open
Abstract
Bacteria produce polycationic homopoly(amino acid)s, which are characterized by isopeptide backbones. Although the biological significance of polycationic homopoly(amino acid)s remains unclear, increasing attention has recently been focused on their potential use to achieve cellular internalization. Here, for the first time, we provide direct evidence that two representative bacterial polycationic isopeptides, ε-poly-L-α-lysine (ε-PαL) and ε-oligo-L-β-lysine (ε-OβL), were internalized into mammalian cells by direct cell-membrane penetration and then diffused throughout the cytosol. In this study, we used clickable ε-PαL and ε-OβL derivatives carrying a C-terminal azide group, which were enzymatically produced and then conjugated with a fluorescent dye to analyze subcellular localization. Interestingly, fluorescent proteins conjugated with the clickable ε-PαL or ε-OβL were also internalized into cells and diffused throughout the cytosol. Notably, a Cre recombinase conjugate with ε-PαL entered cells and mediated the Cre/loxP recombination, and ε-PαL was found to deliver a full-length IgG antibody to the cytosol and nucleus.
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17
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Proteins through the eyes of an organic chemist. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Hao M, Zhang L, Chen P. Membrane Internalization Mechanisms and Design Strategies of Arginine-Rich Cell-Penetrating Peptides. Int J Mol Sci 2022; 23:ijms23169038. [PMID: 36012300 PMCID: PMC9409441 DOI: 10.3390/ijms23169038] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 11/29/2022] Open
Abstract
Cell-penetrating peptides (CPPs) have been discovered to deliver chemical drugs, nucleic acids, and macromolecules to permeate cell membranes, creating a novel route for exogenous substances to enter cells. Up until now, various sequence structures and fundamental action mechanisms of CPPs have been established. Among them, arginine-rich peptides with unique cell penetration properties have attracted substantial scientific attention. Due to the positively charged essential amino acids of the arginine-rich peptides, they can interact with negatively charged drug molecules and cell membranes through non-covalent interaction, including electrostatic interactions. Significantly, the sequence design and the penetrating mechanisms are critical. In this brief synopsis, we summarize the transmembrane processes and mechanisms of arginine-rich peptides; and outline the relationship between the function of arginine-rich peptides and the number of arginine residues, arginine optical isomers, primary sequence, secondary and ternary structures, etc. Taking advantage of the penetration ability, biomedical applications of arginine-rich peptides have been refreshed, including drug/RNA delivery systems, biosensors, and blood-brain barrier (BBB) penetration. Understanding the membrane internalization mechanisms and design strategies of CPPs will expand their potential applications in clinical trials.
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Affiliation(s)
- Minglu Hao
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Lei Zhang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L3G1, Canada
- Correspondence: (L.Z.); (P.C.)
| | - Pu Chen
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L3G1, Canada
- Correspondence: (L.Z.); (P.C.)
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19
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Mann G, Sulkshane P, Sadhu P, Ziv T, Glickman MH, Brik A. Antibody for Serine 65 Phosphorylated Ubiquitin Identifies PLK1-Mediated Phosphorylation of Mitotic Proteins and APC1. Molecules 2022; 27:molecules27154867. [PMID: 35956818 PMCID: PMC9369648 DOI: 10.3390/molecules27154867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 11/25/2022] Open
Abstract
Deciphering the protein posttranslational modification (PTM) code is one of the greatest biochemical challenges of our time. Phosphorylation and ubiquitylation are key PTMs that dictate protein function, recognition, sub-cellular localization, stability, turnover and fate. Hence, failures in their regulation leads to various disease. Chemical protein synthesis allows preparation of ubiquitinated and phosphorylated proteins to study their biochemical properties in great detail. However, monitoring these modifications in intact cells or in cell extracts mostly depends on antibodies, which often have off-target binding. Here, we report that the most widely used antibody for ubiquitin (Ub) phosphorylated at serine 65 (pUb) has significant off-targets that appear during mitosis. These off-targets are connected to polo-like kinase 1 (PLK1) mediated phosphorylation of cell cycle-related proteins and the anaphase promoting complex subunit 1 (APC1).
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Affiliation(s)
- Guy Mann
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Haifa 32000, Israel; (G.M.); (P.S.)
| | - Prasad Sulkshane
- Faculty of Biology, Technion–Israel Institute of Technology, Haifa 32000, Israel;
| | - Pradeep Sadhu
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Haifa 32000, Israel; (G.M.); (P.S.)
| | - Tamar Ziv
- The Smoler Protein Research Center, Lorry I. Lokey Interdisciplinary Center for Life Sciences and Engineering, Technion Israel Institute of Technology, Haifa 32000, Israel;
| | - Michael H. Glickman
- Faculty of Biology, Technion–Israel Institute of Technology, Haifa 32000, Israel;
- Correspondence: (M.H.G.); (A.B.)
| | - Ashraf Brik
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Haifa 32000, Israel; (G.M.); (P.S.)
- Correspondence: (M.H.G.); (A.B.)
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20
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Mandal S, Brik A. Probing the cell delivery of synthetic diubiquitin chains. Chem Commun (Camb) 2022; 58:8782-8785. [PMID: 35837864 PMCID: PMC9350984 DOI: 10.1039/d2cc02476d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the live-cell delivery of structurally different synthetic diubiquitin chains was examined. We found that the combination of structural variations of the Ub chains (intrinsic factors); nature of CPP and CPP-protein linkage (extrinsic factors) influence their delivery. In this study, the live-cell delivery of structurally different synthetic diubiquitin chains was examined.![]()
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Affiliation(s)
- Shaswati Mandal
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200008, Israel.
| | - Ashraf Brik
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200008, Israel.
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21
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Abstract
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There is a continuous demand to improve our
understanding of fundamental
processes that underlie human health and disease. Therefore, novel
strategies that can assist in these efforts are required. For example,
molecular biology and genetic approaches have revolutionized our understanding
of protein-mediated processes by facilitating their direct visualization
and analyses in living cells. Despite these developments, genetic
manipulation has limitations in controlling events that occur after
translation such as posttranslational modifications (PTMs), which
are imperative regulatory elements. As a result, developing new methods
to study PTMs in live cells is a major bottleneck in deciphering their
exact roles in the myriad cellular processes. Synthetic and
semisynthetic proteins are prepared by combining
solid phase peptide synthesis (SPPS) and chemoselective ligation approaches
with synthetic or recombinant peptides. Employing protein synthesis
allows chemists to incorporate natural and unnatural modifications
with virtually unlimited number of functional groups into the protein’s
sequence, such as PTMs and their mimics. In addition, synthetic proteins
can include additional elements such as fluorescent tags, reactive
groups, caged units, and enrichment handles. Therefore, harnessing
the power of chemical protein synthesis offers great opportunities
to study fundamental biological processes. Unfortunately, the
low cell permeability of proteins limits their
applications mainly to in vitro settings, excluding
live cell studies. As a result, chemical biologists have been attempting
to overcome these limitations by developing protein delivery methods
that would enable the study of custom-made proteins in a biological
context. Success with these strategies should enable accurate determination
of protein localization, degradation, folding, interactions, and involvement
in the assembly of membrane-less organelles formed by liquid–liquid
phase separation inside cells. Importantly, protein delivery approaches
are complementary to genetic manipulations, and combining these approaches
should pave the way to new discoveries. In this Account, we
describe recent developments in protein delivery
methods, with emphasis on those most compatible with synthetic proteins.
We highlight experimental approaches and conceptual adaptations required
to design and study synthetic proteins in live cells, with or without
genetic manipulation. In addition, we highlight the strength and weakness
of these approaches for both the delivery and the subsequent studies.
We also describe our endeavors to deliver synthetic proteins to cells
via cell penetrating peptides (CPPs) and multiplexed bead loading
(MBL), as showcases of the applications of these methods to shed light
on biological processes. Lastly, we contemplate other future applications
of synthetic proteins to answer questions that are currently unapproachable.
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Affiliation(s)
- Guy Mann
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Pradeep Sadhu
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Ashraf Brik
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
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22
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Liu Y, Zhao Z, Li M. Overcoming the cellular barriers and beyond: Recent progress on cell penetrating peptide modified nanomedicine in combating physiological and pathological barriers. Asian J Pharm Sci 2022; 17:523-543. [PMID: 36105313 PMCID: PMC9458999 DOI: 10.1016/j.ajps.2022.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/28/2022] [Accepted: 05/23/2022] [Indexed: 11/29/2022] Open
Abstract
The complex physiological and pathological conditions form barriers against efficient drug delivery. Cell penetrating peptides (CPPs), a class of short peptides which translocate drugs across cell membranes with various mechanisms, provide feasible solutions for efficient delivery of biologically active agents to circumvent biological barriers. After years of development, the function of CPPs is beyond cell penetrating. Multifunctional CPPs with bioactivity or active targeting capacity have been designed and successfully utilized in delivery of various cargoes against tumor, myocardial ischemia, ocular posterior segment disorders, etc. In this review, we summarize recent progress in CPP-functionalized nano-drug delivery systems to overcome the physiological and pathological barriers for the applications in cardiology, ophtalmology, mucus, neurology and cancer, etc. We also highlight the prospect of clinical translation of CPP-functionalized drug delivery systems in these areas.
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Affiliation(s)
- Yingke Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Corresponding authors.
| | - Man Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- Corresponding authors.
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23
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Szabó I, Yousef M, Soltész D, Bató C, Mező G, Bánóczi Z. Redesigning of Cell-Penetrating Peptides to Improve Their Efficacy as a Drug Delivery System. Pharmaceutics 2022; 14:pharmaceutics14050907. [PMID: 35631493 PMCID: PMC9146218 DOI: 10.3390/pharmaceutics14050907] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/29/2022] Open
Abstract
Cell-penetrating peptides (CPP) are promising tools for the transport of a broad range of compounds into cells. Since the discovery of the first members of this peptide family, many other peptides have been identified; nowadays, dozens of these peptides are known. These peptides sometimes have very different chemical–physical properties, but they have similar drawbacks; e.g., non-specific internalization, fast elimination from the body, intracellular/vesicular entrapment. Although our knowledge regarding the mechanism and structure–activity relationship of internalization is growing, the prediction and design of the cell-penetrating properties are challenging. In this review, we focus on the different modifications of well-known CPPs to avoid their drawbacks, as well as how these modifications may increase their internalization and/or change the mechanism of penetration.
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Affiliation(s)
- Ildikó Szabó
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Correspondence: (I.S.); (Z.B.)
| | - Mo’ath Yousef
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Dóra Soltész
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Csaba Bató
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Gábor Mező
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Zoltán Bánóczi
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
- Correspondence: (I.S.); (Z.B.)
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24
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Mann G, Sadhu P, Brik A. Multiplexed Delivery of Synthetic (Un)Conjugatable Ubiquitin and SUMO2 Enables Simultaneous Monitoring of their Localization and Function in Live Cells. Chembiochem 2022; 23:e202200122. [PMID: 35235714 PMCID: PMC9401080 DOI: 10.1002/cbic.202200122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Indexed: 11/17/2022]
Abstract
Ubiquitin (Ub) and its related small Ub like modifier (SUMO) are among the most influential protein post‐translational modifications in eukaryotes. Unfortunately, visualizing these modifications in live cells is a challenging task. Chemical protein synthesis offers great opportunities in studying and further understanding Ub and SUMO biology. Nevertheless, the low cell permeability of proteins limits these studies mainly for in vitro applications. Here, we introduce a multiplexed protein cell delivery approach, termed MBL (multiplexed bead loading), for simultaneous loading of up to four differentially labeled proteins with organic fluorophores. We applied MBL to visualize ubiquitination and SUMOylation events in live and untransfected cells without fluorescent protein tags or perturbation to their endogenous levels. Our study reveals unprecedented involvements of Ub and SUMO2 in lysosomes depending on conjugation states. We envision that this approach will improve our understanding of dynamic cellular processes such as formation and disassembly of membraneless organelles.
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Affiliation(s)
- Guy Mann
- Technion Israel Institute of Technology, Schulich faculty of chemistry, ISRAEL
| | - Pradeep Sadhu
- Technion Israel Institute of Technology, Schulich faculty of chemistry, ISRAEL
| | - Ashraf Brik
- Technion-Israel Institue of Technology, Schulich Faculty of chemistry, Technion City, 32000, Haifa, ISRAEL
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25
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Burslem GM. The chemical biology of ubiquitin. Biochim Biophys Acta Gen Subj 2022; 1866:130079. [PMID: 34971772 PMCID: PMC10038182 DOI: 10.1016/j.bbagen.2021.130079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
This mini-review will cover the various chemical biology approaches employed to prepare and modulate ubiquitin chains and the ubiquitin-proteasome system. Emphasis will be given to the biochemistry and chemical biology of poly-ubiquitin chain preparation as a tool to elucidate its roles in biological systems as well as the hijacking of the ubiquitin proteasome system using heterobifunctional compounds to induce intracellular ubiquitination.
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Affiliation(s)
- George M Burslem
- Department of Biochemistry and Biophysics, Department of Cancer Biology and Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, PA 19104, USA.
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26
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Hewitt CS, Das C, Flaherty DP. Rational Development and Characterization of a Ubiquitin Variant with Selectivity for Ubiquitin C-Terminal Hydrolase L3. Biomolecules 2022; 12:biom12010062. [PMID: 35053210 PMCID: PMC8773573 DOI: 10.3390/biom12010062] [Citation(s) in RCA: 2] [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: 11/17/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 01/12/2023] Open
Abstract
There is currently a lack of reliable methods and strategies to probe the deubiquitinating enzyme UCHL3. Current small molecules reported for this purpose display reduced potency and selectivity in cellular assays. To bridge this gap and provide an alternative approach to probe UCHL3, our group has carried out the rational design of ubiquitin-variant activity-based probes with selectivity for UCHL3 over the closely related UCHL1 and other DUBs. The approach successfully produced a triple-mutant ubiquitin variant activity-based probe, UbVQ40V/T66K/V70F-PRG, that was ultimately 20,000-fold more selective for UCHL3 over UCHL1 when assessed by rate of inactivation assays. This same variant was shown to selectively form covalent adducts with UCHL3 in MDA-MB-231 breast cancer cells and no reactivity toward other DUBs expressed. Overall, this study demonstrates the feasibility of the approach and also provides insight into how this approach may be applied to other DUB targets.
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Affiliation(s)
- Chad S. Hewitt
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA;
| | - Chittaranjan Das
- Department of Chemistry, College of Science, Purdue University, West Lafayette, IN 47907, USA;
| | - Daniel P. Flaherty
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA;
- Purdue Center for Cancer Research, Hanson Life Sciences Research Building, Purdue University, West Lafayette, IN 47907, USA
- Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA
- Correspondence:
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27
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Zhou W, Yang F, Li S, Yuan R, Xiang Y. Stimulus-responsive hexahedron DNA framework facilitates targeted and direct delivery of native anticancer protein into cancer cells. Chem Sci 2022; 13:11132-11139. [PMID: 36320481 PMCID: PMC9516948 DOI: 10.1039/d2sc02858a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/08/2022] [Indexed: 11/30/2022] Open
Abstract
The targeted and direct intracellular delivery of proteins plays critical roles in biological research and disease treatments, yet remains highly challenging. Current solutions to such a challenge are limited by the modification of proteins that may potentially alter protein functions inside cells or the lack of targeting capability. Herein, we develop a stimulus-responsive and bivalent aptamer hexahedron DNA framework (HDF) for the targeted and direct delivery of native therapeutic proteins into cancer cells. The unmodified proteins are caged inside the HDF nanostructures assembled from six programmable single stranded DNAs to protect the proteins from degradation by cathepsins and enhance their targeting capability and delivery efficiency with the nanostructure-integrated aptamers. In addition, the protein drugs can be selectively released from the HDF nanostructures by the intracellular ATP molecules to induce tumor cell apoptosis, highlighting their promising application potential for cell biology and precise protein medicines. A bivalent aptamer hexahedron DNA framework can facilitate the targeted intracellular delivery of native RNase A to result in effective cancer cell apoptosis.![]()
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Affiliation(s)
- Wenjiao Zhou
- School of Chemistry and Chemical Engineering, Chongqing University of Technology Chongqing 400054 P. R. China
| | - Fang Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 P. R. China
| | - Shunmei Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 P. R. China
| | - Yun Xiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 P. R. China
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Yousef M, Szabó I, Biri‐Kovács B, Szeder B, Illien F, Sagan S, Bánóczi Z. Modification of Short Non‐Permeable Peptides to Increase Cellular Uptake and Cytostatic Activity of Their Conjugates. ChemistrySelect 2021. [DOI: 10.1002/slct.202103150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mo'ath Yousef
- Department of Organic Chemistry Eötvös L. University Budapest Hungary
| | - Ildikó Szabó
- MTA-ELTE Research Group of Peptide Chemistry Eötvös Loránd Research Network (ELKH) Budapest Hungary
| | - Beáta Biri‐Kovács
- MTA-ELTE Research Group of Peptide Chemistry Eötvös Loránd Research Network (ELKH) Budapest Hungary
| | - Bálint Szeder
- Research Centre for Natural Sciences Institute of Enzymology Budapest Hungary
| | - Françoise Illien
- Sorbonne Université École normale supérieure PSL University CNRS Laboratoire des biomolécules, LBM 75005 Paris France
| | - Sandrine Sagan
- Sorbonne Université École normale supérieure PSL University CNRS Laboratoire des biomolécules, LBM 75005 Paris France
| | - Zoltán Bánóczi
- Department of Organic Chemistry Eötvös L. University Budapest Hungary
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Mann G, Satish G, Sulkshane P, Mandal S, Glickman MH, Brik A. Synthesis and delivery of a stable phosphorylated ubiquitin probe to study ubiquitin conjugation in mitophagy. Chem Commun (Camb) 2021; 57:9438-9441. [PMID: 34528945 PMCID: PMC8445162 DOI: 10.1039/d1cc04045f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 08/10/2021] [Indexed: 12/13/2022]
Abstract
Protein post-translational modifications are involved in essentially all aspects of cellular signaling. Their dynamic nature and the difficulties in installing them using enzymatic approaches limits their direct study in human cells. Reported herein is the first synthesis, delivery and cellular study of a stable phosphoubiquitin probe. Our results compare Parkin's substrate preference during mitophagy via direct visualization of a phosphorylated ubiquitin probe in the cellular environment.
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Affiliation(s)
- Guy Mann
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
| | - Gandhesiri Satish
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
| | - Prasad Sulkshane
- Faculty of Biology, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
| | - Shaswati Mandal
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
| | - Michael H Glickman
- Faculty of Biology, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
| | - Ashraf Brik
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa, 3200008, Israel.
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30
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Tan P, Cai H, Wei Q, Tang X, Zhang Q, Kopytynski M, Yang J, Yi Y, Zhang H, Gong Q, Gu Z, Chen R, Luo K. Enhanced chemo-photodynamic therapy of an enzyme-responsive prodrug in bladder cancer patient-derived xenograft models. Biomaterials 2021; 277:121061. [PMID: 34508957 DOI: 10.1016/j.biomaterials.2021.121061] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 02/08/2023]
Abstract
Patient-derived xenograft (PDX) models are powerful tools for understanding cancer biology and drug discovery. In this study, a polymeric nano-sized drug delivery system poly (OEGMA)-PTX@Ce6 (NPs@Ce6) composed of a photosensitizer chlorin e6 (Ce6) and a cathepsin B-sensitive polymer-paclitaxel (PTX) prodrug was constructed. The photochemical internalization (PCI) effect and enhanced chemo-photodynamic therapy (PDT) were achieved via a two-stage light irradiation strategy. The results showed that the NPs@Ce6 had great tumor targeting and rapid cellular uptake induced by PCI, thereby producing excellent anti-tumor effects on human bladder cancer PDX models with tumor growth inhibition greater than 98%. Bioinformatics analysis revealed that the combination of PTX chemotherapy and PDT up-regulated oxidative phosphorylation and reactive oxygen species (ROS) generation, blocked cell cycle and proliferation, and down-regulated the pathways related to tumor progression, invasion and metastasis, including hypoxia, TGF-β signaling and TNF-α signaling pathways. Western blots analysis confirmed that proteins promoting apoptosis (Bax, Cleaved caspase-3, Cleaved PARP) and DNA damage (γH2A.X) were up-regulated, while those inhibiting apoptosis (Bcl-2) and mitosis (pan-actin and α/β-tubulin) were down-regulated after chemo-PDT treatment. Therefore, this stimuli-responsive polymer-PTX prodrug-based nanomedicine with combinational chemotherapy and PDT evaluated in the PDX models could be a potential candidate for bladder cancer therapy.
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Affiliation(s)
- Ping Tan
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hao Cai
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiang Wei
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiaodi Tang
- State Key Laboratory for Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Qianfeng Zhang
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Michal Kopytynski
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Junxiao Yang
- State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yong Yi
- State Key Laboratory for Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA, 91711, USA
| | - Qiyong Gong
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Zhongwei Gu
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Kui Luo
- Department of Urology, Institute of Urology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China.
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31
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Affiliation(s)
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan.
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32
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Luther DC, Jeon T, Goswami R, Nagaraj H, Kim D, Lee YW, Rotello VM. Protein Delivery: If Your GFP (or Other Small Protein) Is in the Cytosol, It Will Also Be in the Nucleus. Bioconjug Chem 2021; 32:891-896. [PMID: 33872490 PMCID: PMC8508718 DOI: 10.1021/acs.bioconjchem.1c00103] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Intracellular protein delivery is a transformative tool for biologics research and medicine. Delivery into the cytosol allows proteins to diffuse throughout the cell and access subcellular organelles. Inefficient delivery caused by endosomal entrapment is often misidentified as cytosolic delivery. This inaccuracy muddles what should be a key checkpoint in assessing delivery efficiency. Green fluorescent protein (GFP) is a robust cargo small enough to passively diffuse from the cytosol into the nucleus. Fluorescence of GFP in the nucleus is a direct readout for cytosolic access and effective delivery. Here, we highlight recent examples from the literature for the accurate assessment of cytosolic protein delivery using GFP fluorescence in the cytosol and nucleus.
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Affiliation(s)
- David C. Luther
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
- These authors contributed equally
| | - Taewon Jeon
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, 230 Stockbridge Road, Amherst, MA 01003, USA
- These authors contributed equally
| | - Ritabrita Goswami
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Harini Nagaraj
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Dongkap Kim
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
| | - Yi-Wei Lee
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
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Mandal S, Mann G, Satish G, Brik A. Enhanced Live-Cell Delivery of Synthetic Proteins Assisted by Cell-Penetrating Peptides Fused to DABCYL. Angew Chem Int Ed Engl 2021; 60:7333-7343. [PMID: 33615660 PMCID: PMC8048964 DOI: 10.1002/anie.202016208] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Indexed: 12/13/2022]
Abstract
Live-cell delivery of a fully synthetic protein having selectivity towards a particular target is a promising approach with potential applications for basic research and therapeutics. Cell-penetrating peptides (CPPs) allow the cellular delivery of proteins but mostly result in endosomal entrapment, leading to lack of bioavailability. Herein, we report the design and synthesis of a CPP fused to 4-((4-(dimethylamino)phenyl)azo)benzoic acid (DABCYL) to enhance cellular uptake of fluorescently labelled synthetic protein analogues in low micromolar concentration. The attachment of cyclic deca-arginine (cR10) modified with a single lysine linked to DABCYL to synthetic ubiquitin (Ub) and small ubiquitin-like modifier-2 (SUMO-2) scaffolds resulted in a threefold higher uptake efficacy in live cells compared to the unmodified cR10. We could also achieve cR10DABCYL-assisted delivery of Ub and a Ub variant (Ubv) based activity-based probes for functional studies of deubiquitinases in live cells.
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Affiliation(s)
- Shaswati Mandal
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology3200008HaifaIsrael
| | - Guy Mann
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology3200008HaifaIsrael
| | - Gandhesiri Satish
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology3200008HaifaIsrael
| | - Ashraf Brik
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology3200008HaifaIsrael
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