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Xing Y, Peng A, Yang J, Cheng Z, Yue Y, Liu F, Li F, Liu Y, Liu Q. Precisely Activating cGAS-STING Pathway with a Novel Peptide-Based Nanoagonist to Potentiate Immune Checkpoint Blockade Cancer Immunotherapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309583. [PMID: 38233164 PMCID: PMC11022698 DOI: 10.1002/advs.202309583] [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: 12/11/2023] [Revised: 01/05/2024] [Indexed: 01/19/2024]
Abstract
As an essential intracellular immune activation pathway, the cGAS-STING pathway has attracted broad attention in cancer treatment. However, low bioavailability, nonspecificity, and adverse effects of small molecule STING agonists severely limit their therapeutic efficacy and in vivo application. In this study, a peptide-based STING agonist is first proposed, and KLA is screened out to activate the cGAS-STING pathway by promoting mitochondrial DNA (mtDNA) leakage. To precisely activate the cGAS-STING pathway and block the PD-1/PD-L1 pathway, a multi-stimuli activatable peptide nanodrug (MAPN) is developed for the effective delivery of KLA and PD-L1 antagonist peptide (CVR). With rational design, MAPN achieved the site-specific release of KLA and CVR in response to multiple endogenous stimuli, simultaneously activating the cGAS-STING pathway and blocking PD-1/PD-L1 pathway, ultimately initiating robust and durable T cell anti-tumor immunity with a tumor growth inhibition rate of 78% and extending the median survival time of B16F10 tumor-bearing mice to 40 days. Overall, antimicrobial peptides, which can promote mtDNA leakage through damaging mitochondrial membranes, may be potential alternatives for small molecule STING agonists and giving a new insight for the design of novel STING agonists. Furthermore, MAPN presents a universal delivery platform for the effective synergy of multiple peptides.
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Affiliation(s)
- Yumeng Xing
- School of PharmacyAnhui Medical UniversityHefei230032China
- College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China
| | - Ao Peng
- School of PharmacyAnhui Medical UniversityHefei230032China
| | - Jianhui Yang
- School of PharmacyAnhui Medical UniversityHefei230032China
| | - Zhifei Cheng
- School of PharmacyAnhui University of Chinese MedicineHefei230012China
| | - Yi Yue
- School of PharmacyAnhui Medical UniversityHefei230032China
| | - Feilong Liu
- School of PharmacyAnhui Medical UniversityHefei230032China
| | - Fenghe Li
- School of PharmacyAnhui Medical UniversityHefei230032China
| | - Yang Liu
- College of ChemistryNankai UniversityTianjin300071China
| | - Qi Liu
- School of PharmacyAnhui Medical UniversityHefei230032China
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2
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Liu Y, Li S, Lin S, Shi S, Tian T, Zhang B, Zhang T, Lin Y. A tetrahedral framework nucleic acid based multifunctional nanocapsule for tumor prophylactic mRNA vaccination. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Strategies for Improving Peptide Stability and Delivery. Pharmaceuticals (Basel) 2022; 15:ph15101283. [PMID: 36297395 PMCID: PMC9610364 DOI: 10.3390/ph15101283] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
Peptides play an important role in many fields, including immunology, medical diagnostics, and drug discovery, due to their high specificity and positive safety profile. However, for their delivery as active pharmaceutical ingredients, delivery vectors, or diagnostic imaging molecules, they suffer from two serious shortcomings: their poor metabolic stability and short half-life. Major research efforts are being invested to tackle those drawbacks, where structural modifications and novel delivery tactics have been developed to boost their ability to reach their targets as fully functional species. The benefit of selected technologies for enhancing the resistance of peptides against enzymatic degradation pathways and maximizing their therapeutic impact are also reviewed. Special note of cell-penetrating peptides as delivery vectors, as well as stapled modified peptides, which have demonstrated superior stability from their parent peptides, are reported.
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4
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Lee J, Oh ET, Lee HJ, Lee E, Kim HG, Park HJ, Kim C. Tuning of Peptide Cytotoxicity with Cell Penetrating Motif Activatable by Matrix Metalloproteinase-2. ACS OMEGA 2022; 7:29684-29691. [PMID: 36061651 PMCID: PMC9434767 DOI: 10.1021/acsomega.2c02127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/04/2022] [Indexed: 05/30/2023]
Abstract
Although diverse cell penetrating motifs not only from naturally occurring proteins but also from synthetic peptides have been discovered and developed, the selectivity of cargo delivery connected to these motifs into the desired target cells is generally low. Here, we demonstrate the selective cytotoxicity tuning of an anticancer KLA peptide with a cell penetrating motif activatable by matrix metalloproteinase-2 (MMP2). The anionic masking sequence introduced at the end of the KLA peptide through an MMP2-cleavable linker is selectively cleaved by MMP2 and the cationic cell penetrating motif is activated. Upon treatment of the peptide to H1299 cells (high MMP2 level), it is selectively internalized into the cells by MMP2, which consequently induces membrane disruption and cell death. In contrast, the peptide shows negligible cytotoxicity toward A549 cancer cells with low MMP2 levels. Furthermore, the selective therapeutic efficacy of the peptide induced by MMP2 is also corroborated using in vivo study.
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Affiliation(s)
- Jeonghun Lee
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
| | - Eun-Taex Oh
- Department
of Biomedical Sciences, School of Medicine, Inha University, Incheon 22212, Korea
| | - Hae-June Lee
- Division
of Radiation Biomedical Research, Korea
Institute of Radiological & Medical Sciences, Seoul 01812, Korea
| | - Eunkyoung Lee
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
| | - Ha Gyeong Kim
- Department
of Microbiology, Research Center for Controlling Intracellular Communication,
Program in Biomedical Science & Engineering, Inha University, Incheon 22212, Korea
| | - Heon Joo Park
- Department
of Microbiology, Research Center for Controlling Intracellular Communication,
Program in Biomedical Science & Engineering, Inha University, Incheon 22212, Korea
| | - Chulhee Kim
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
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5
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Kang Z, Wang C, Zhang Z, Liu Q, Zheng Y, Zhao Y, Pan Z, Li Q, Shi L, Liu Y. Spatial Distribution Control of Antimicrobial Peptides through a Novel Polymeric Carrier for Safe and Efficient Cancer Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2201945. [PMID: 35385590 DOI: 10.1002/adma.202201945] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Antimicrobial peptides (AMPs) hold great potential for use in tumor treatment. However, developing AMP-based antitumor therapies is challenging due to circulatory instability, hemolytic toxicity, low selectivity, and poor cell permeability of AMPs. In this study, a polymeric carrier for AMPs (denoted as PAMPm -co-PPBEn /PCA) is presented that effectively enhances their anticancer efficacy while minimizing their potential side effects. By integrating multiple responsive structures at the molecular level, the carrier finely controls the spatial distribution of AMPs in different biological microenvironments, thereby effectively modulating their membranolytic ability. Upon employing KLA as the model AMP, the polymeric carrier's hemolytic toxicity during blood circulation is suppressed, its cellular internalization when reaching tumor tissues facilitated, and its membranolytic toxicity toward the mitochondria upon entering cancer cells restored and further enhanced. Animal studies indicate that this approach significantly improves the antitumor efficacy of KLA and reduces its toxicity. Considering that the loading method for most AMPs is identical to that of KLA, the polymeric carrier reported in this study may provide a feasible approach for the development of AMP-based cancer treatments.
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Affiliation(s)
- Ziyao Kang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Chun Wang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Zhanzhan Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Qi Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yadan Zheng
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yu Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Zheng Pan
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Qiushi Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yang Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
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6
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Lee J, Oh ET, Lee E, Park HJ, Kim C. Induced cytotoxicity of peptides by intracellular native chemical ligation. NEW J CHEM 2022. [DOI: 10.1039/d2nj02053j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The intracellular NCL reaction of peptide with both N-terminal cysteine and C-terminal crypto-thioester with protecting groups occurs naturally in cancer cells, which endows peptide with induced cytotoxicity.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
| | - Eun-Taex Oh
- Department of Biomedical Sciences, School of Medicine, Inha University, Incheon, 22212, Korea
| | - Eunkyung Lee
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
| | - Heon Joo Park
- Department of Microbiology, Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Korea
| | - Chulhee Kim
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
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7
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Cui Z, Luo Q, Bannon MS, Gray VP, Bloom TG, Clore MF, Hughes MA, Crawford MA, Letteri RA. Molecular engineering of antimicrobial peptide (AMP)-polymer conjugates. Biomater Sci 2021; 9:5069-5091. [PMID: 34096936 PMCID: PMC8493962 DOI: 10.1039/d1bm00423a] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
As antimicrobial resistance becomes an increasing threat, bringing significant economic and health burdens, innovative antimicrobial treatments are urgently needed. While antimicrobial peptides (AMPs) are promising therapeutics, exhibiting high activity against resistant bacterial strains, limited stability and toxicity to mammalian cells has hindered clinical development. Attaching AMPs to polymers provides opportunities to present AMPs in a way that maximizes bacterial killing while enhancing compatibility with mammalian cells, stability, and solubility. Conjugation of an AMP to a linear hydrophilic polymer yields the desired improvements in stability, mammalian cell compatibility, and solubility, yet often markedly reduces bactericidal effects. Non-linear polymer architectures and supramolecular assemblies that accommodate multiple AMPs per polymer chain afford AMP-polymer conjugates that strike a superior balance of antimicrobial activity, mammalian cell compatibility, stability, and solubility. Therefore, we review the design criteria, building blocks, and synthetic strategies for engineering AMP-polymer conjugates, emphasizing the connection between molecular architecture and antimicrobial performance to inspire and enable further innovation to advance this emerging class of biomaterials.
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Affiliation(s)
- Zixian Cui
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA, 22903, USA.
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9
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Sun H, Cao W, Zang N, Clemons TD, Scheutz GM, Hu Z, Thompson MP, Liang Y, Vratsanos M, Zhou X, Choi W, Sumerlin BS, Stupp SI, Gianneschi NC. Proapoptotic Peptide Brush Polymer Nanoparticles via Photoinitiated Polymerization-Induced Self-Assembly. Angew Chem Int Ed Engl 2020; 59:19136-19142. [PMID: 32659039 PMCID: PMC7722202 DOI: 10.1002/anie.202006385] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/29/2020] [Indexed: 02/06/2023]
Abstract
Herein, we report the photoinitiated polymerization-induced self-assembly (photo-PISA) of spherical micelles consisting of proapoptotic peptide-polymer amphiphiles. The one-pot synthetic approach yielded micellar nanoparticles at high concentrations and at scale (150 mg mL-1 ) with tunable peptide loadings up to 48 wt. %. The size of the micellar nanoparticles was tuned by varying the lengths of hydrophobic and hydrophilic building blocks. Critically, the peptide-functionalized nanoparticles imbued the proapoptotic "KLA" peptides (amino acid sequence: KLAKLAKKLAKLAK) with two key properties otherwise not inherent to the sequence: 1) proteolytic resistance compared to the oligopeptide alone; 2) significantly enhanced cell uptake by multivalent display of KLA peptide brushes. The result was demonstrated improved apoptosis efficiency in HeLa cells. These results highlight the potential of photo-PISA in the large-scale synthesis of functional, proteolytically resistant peptide-polymer conjugates for intracellular delivery.
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Affiliation(s)
- Hao Sun
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Wei Cao
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Nanzhi Zang
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Tristan D Clemons
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, IL, 60611, USA
| | - Georg M Scheutz
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Ziying Hu
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Matthew P Thompson
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Yifei Liang
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Maria Vratsanos
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Xuhao Zhou
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Wonmin Choi
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Brent S Sumerlin
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Samuel I Stupp
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, IL, 60611, USA
- Department of Medicine, Northwestern University, Evanston, IL, 60208, USA
| | - Nathan C Gianneschi
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Pharmacology, International Institute for Nanotechnology, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, IL, 60611, USA
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10
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Sun H, Cao W, Zang N, Clemons TD, Scheutz GM, Hu Z, Thompson MP, Liang Y, Vratsanos M, Zhou X, Choi W, Sumerlin BS, Stupp SI, Gianneschi NC. Proapoptotic Peptide Brush Polymer Nanoparticles via Photoinitiated Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006385] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hao Sun
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Wei Cao
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Nanzhi Zang
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Tristan D. Clemons
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
- Simpson Querrey Institute Northwestern University 303 East Superior Street Chicago IL 60611 USA
| | - Georg M. Scheutz
- George & Josephine Butler Polymer Research Laboratory Center for Macromolecular Science & Engineering Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Ziying Hu
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Matthew P. Thompson
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Yifei Liang
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Maria Vratsanos
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Xuhao Zhou
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Wonmin Choi
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Brent S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory Center for Macromolecular Science & Engineering Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Samuel I. Stupp
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
- Simpson Querrey Institute Northwestern University 303 East Superior Street Chicago IL 60611 USA
- Department of Medicine Northwestern University Evanston IL 60208 USA
| | - Nathan C. Gianneschi
- Department of Chemistry Department of Materials Science & Engineering Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
- Department of Pharmacology International Institute for Nanotechnology Chemistry of Life Processes Institute Northwestern University Evanston IL 60208 USA
- Simpson Querrey Institute Northwestern University 303 East Superior Street Chicago IL 60611 USA
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11
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Lee J, Oh ET, Joo YE, Kim HG, Park HJ, Kim C. Stimulus-responsive conformational transformation of peptide with cell penetrating motif for triggered cytotoxicity. NEW J CHEM 2020. [DOI: 10.1039/d0nj04608f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modified KLA peptide with an intramolecular disulfide bond and a cell penetrating sequence is developed for enhanced intracellular uptake and triggered selective cytotoxicity towards cancer cells by stimulus-responsive conformational transformation.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Eun-Taex Oh
- Department of Biomedical Sciences
- School of Medicine
- Inha University
- Incheon 22212
- Korea
| | - Ye-eun Joo
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Ha Gyeong Kim
- Department of Microbiology
- Hypoxia-Related Disease Research Center
- College of Medicine
- Inha University
- Incheon 22212
| | - Heon Joo Park
- Department of Microbiology
- Hypoxia-Related Disease Research Center
- College of Medicine
- Inha University
- Incheon 22212
| | - Chulhee Kim
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
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12
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Lee J, Lee H, Kim C. Stimuli-responsive conformational transformation of antimicrobial peptides stapled with an azobenzene unit. NEW J CHEM 2020. [DOI: 10.1039/d0nj03409f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The effect of the azobenzene-stapling position on the triggered transformation of the helical conformation of KLA peptides in response to UV irradiation and reductive cleavage is investigated.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Hanwool Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Chulhee Kim
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
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