1
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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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Stepanova M, Nikiforov A, Tennikova T, Korzhikova-Vlakh E. Polypeptide-Based Systems: From Synthesis to Application in Drug Delivery. Pharmaceutics 2023; 15:2641. [PMID: 38004619 PMCID: PMC10674432 DOI: 10.3390/pharmaceutics15112641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/02/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Synthetic polypeptides are biocompatible and biodegradable macromolecules whose composition and architecture can vary over a wide range. Their unique ability to form secondary structures, as well as different pathways of modification and biofunctionalization due to the diversity of amino acids, provide variation in the physicochemical and biological properties of polypeptide-containing materials. In this review article, we summarize the advances in the synthesis of polypeptides and their copolymers and the application of these systems for drug delivery in the form of (nano)particles or hydrogels. The issues, such as the diversity of polypeptide-containing (nano)particle types, the methods for their preparation and drug loading, as well as the influence of physicochemical characteristics on stability, degradability, cellular uptake, cytotoxicity, hemolysis, and immunogenicity of polypeptide-containing nanoparticles and their drug formulations, are comprehensively discussed. Finally, recent advances in the development of certain drug nanoformulations for peptides, proteins, gene delivery, cancer therapy, and antimicrobial and anti-inflammatory systems are summarized.
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Affiliation(s)
- Mariia Stepanova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
| | - Alexey Nikiforov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
| | - Tatiana Tennikova
- Institute of Chemistry, Saint-Petersburg State University, Universitetskiy pr. 26, Petergof, 198504 St. Petersburg, Russia
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
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3
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Choi W, Nensel AK, Droho S, Fattah MA, Mokashi-Punekar S, Swygart DI, Burton ST, Schwartz GW, Lavine JA, Gianneschi NC. Thrombospondin-1 proteomimetic polymers exhibit anti-angiogenic activity in a neovascular age-related macular degeneration mouse model. SCIENCE ADVANCES 2023; 9:eadi8534. [PMID: 37831763 PMCID: PMC10575579 DOI: 10.1126/sciadv.adi8534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/08/2023] [Indexed: 10/15/2023]
Abstract
Neovascular age-related macular degeneration (nAMD) is the leading cause of blindness in the developed world. Current therapy includes monthly intraocular injections of anti-VEGF antibodies, which are ineffective in up to one third of patients. Thrombospondin-1 (TSP1) inhibits angiogenesis via CD36 binding, and its down-regulated expression is negatively associated with the onset of nAMD. Here, we describe TSP1 mimetic protein-like polymers (TSP1 PLPs). TSP1 PLPs bind CD36 with high affinity, resist degradation, show prolonged intraocular half-lives (13.1 hours), have no toxicity at relevant concentrations in vivo (40 μM), and are more efficacious in ex vivo choroidal sprouting assays compared to the peptide sequence and Eylea (aflibercept), the current standard of care anti-VEGF treatment. Furthermore, PLPs exhibit superior in vivo efficacy in a mouse model for nAMD compared to control PLPs consisting of scrambled peptide sequences, using fluorescein angiography and immunofluorescence. Since TSP-1 inhibits angiogenesis by VEGF-dependent and independent mechanisms, TSP1 PLPs are a potential therapeutic for patients with anti-VEGF treatment-resistant nAMD.
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Affiliation(s)
- Wonmin Choi
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - Ashley K. Nensel
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - Steven Droho
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Mara A. Fattah
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - Soumitra Mokashi-Punekar
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - David I. Swygart
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Neuroscience, Weinberg School of Arts and Sciences, Northwestern University, Chicago, IL, USA
| | - Spencer T. Burton
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
| | - Greg W. Schwartz
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Neuroscience, Weinberg School of Arts and Sciences, Northwestern University, Chicago, IL, USA
| | - Jeremy A. Lavine
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Nathan C. Gianneschi
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, USA
- Department of Materials Science and Engineering, Biomedical Engineering, Pharmacology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, IL, USA
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4
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Wang C, Zhao R, Fan W, Li L, Feng H, Li Z, Yan C, Shao X, Matyjaszewski K, Wang Z. Tribochemically Controlled Atom Transfer Radical Polymerization Enabled by Contact Electrification. Angew Chem Int Ed Engl 2023; 62:e202309440. [PMID: 37507344 DOI: 10.1002/anie.202309440] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 07/30/2023]
Abstract
Traditional mechanochemically controlled reversible-deactivation radical polymerization (RDRP) utilizes ultrasound or ball milling to regenerate activators, which induce side reactions because of the high-energy and high-frequency stimuli. Here, we propose a facile approach for tribochemically controlled atom transfer radical polymerization (tribo-ATRP) that relies on contact-electro-catalysis (CEC) between titanium oxide (TiO2 ) particles and CuBr2 /tris(2-pyridylmethylamine (TPMA), without any high-energy input. Under the friction induced by stirring, the TiO2 particles are electrified, continuously reducing CuBr2 /TPMA into CuBr/TPMA, thereby conversing alkyl halides into active radicals to start ATRP. In addition, the effect of friction on the reaction was elucidated by theoretical simulation. The results indicated that increasing the frequency could reduce the energy barrier for the electron transfer from TiO2 particles to CuBr2 /TPMA. In this study, the design of tribo-ATRP was successfully achieved, enabling CEC (ca. 10 Hz) access to a variety of polymers with predetermined molecular weights, low dispersity, and high chain-end fidelity.
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Affiliation(s)
- Chen Wang
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Ruoqing Zhao
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wenru Fan
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Lei Li
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Haoyang Feng
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Zexuan Li
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Ci Yan
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Xiaoyang Shao
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Zhenhua Wang
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an, 710072, China
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5
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Sbordone F, Veskova J, Richardson B, Do PT, Micallef A, Frisch H. Embedding Peptides into Synthetic Polymers: Radical Ring-Opening Copolymerization of Cyclic Peptides. J Am Chem Soc 2023; 145:6221-6229. [PMID: 36898136 DOI: 10.1021/jacs.2c12517] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Biopolymers such as proteins and nucleic acids are the key building blocks of life. Synthetic polymers have nevertheless revolutionized our everyday life through their robust synthetic accessibility. Combining the unmatched functionality of biopolymers with the robustness of tailorable synthetic polymers holds the promise to create materials that can be designed ad hoc for a wide array of applications. Radical polymerization is the most widely applied polymerization technique in both fundamental science and industrial polymer production. While this polymerization technique is robust and well controlled, it generally yields unfunctional all-carbon backbones. Combinations of natural polymers such as peptides, with synthetic polymers, are thus limited to tethering peptides onto the side chains or chain ends of the latter. This synthetic limitation is a critical restraint, considering that the function of biopolymers is programmed into the sequence of their main chain (i.e., primary structure). Here, we report the radical copolymerization of peptides and synthetic comonomers yielding synthetic polymers with defined peptide sequences embedded into their main chain. Key was the development of a solid-phase peptide synthesis (SPPS) approach to generate synthetic access to peptide conjugates containing allylic sulfides. Following cyclization, the obtained peptide monomers can be readily copolymerized with N,N-dimethylacrylamide (DMA)─controlled by reversible addition-fragmentation chain transfer (RAFT). Importantly, the developed synthetic strategy is compatible with all 20 standard amino acids and uses exclusively standard SPPS chemicals or chemicals accessible in one-step synthesis─prerequisite for widespread and universal application.
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Affiliation(s)
- Federica Sbordone
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Juliet Veskova
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Bailey Richardson
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Phuong Thi Do
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Aaron Micallef
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Central Analytical Research Facility, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Hendrik Frisch
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
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6
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Shirinichi F, Ibrahim T, Rodriguez M, Sun H. Assembling the best of two worlds: Biomolecule‐polymer nanoparticles via polymerization‐induced self‐assembly. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Farbod Shirinichi
- Department of Chemistry and Chemical & Biomedical Engineering, Tagliatela College of Engineering University of New Haven West Haven Connecticut USA
| | - Tarek Ibrahim
- Department of Chemistry and Chemical & Biomedical Engineering, Tagliatela College of Engineering University of New Haven West Haven Connecticut USA
| | - Mia Rodriguez
- Department of Chemistry and Chemical & Biomedical Engineering, Tagliatela College of Engineering University of New Haven West Haven Connecticut USA
| | - Hao Sun
- Department of Chemistry and Chemical & Biomedical Engineering, Tagliatela College of Engineering University of New Haven West Haven Connecticut USA
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7
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Weiss AM, Hossainy S, Rowan SJ, Hubbell JA, Esser-Kahn AP. Immunostimulatory Polymers as Adjuvants, Immunotherapies, and Delivery Systems. Macromolecules 2022; 55:6913-6937. [PMID: 36034324 PMCID: PMC9404695 DOI: 10.1021/acs.macromol.2c00854] [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: 04/25/2022] [Revised: 07/16/2022] [Indexed: 12/14/2022]
Abstract
![]()
Activating innate immunity in a controlled manner is
necessary
for the development of next-generation therapeutics. Adjuvants, or
molecules that modulate the immune response, are critical components
of vaccines and immunotherapies. While small molecules and biologics
dominate the adjuvant market, emerging evidence supports the use of
immunostimulatory polymers in therapeutics. Such polymers can stabilize
and deliver cargo while stimulating the immune system by functioning
as pattern recognition receptor (PRR) agonists. At the same time,
in designing polymers that engage the immune system, it is important
to consider any unintended initiation of an immune response that results
in adverse immune-related events. Here, we highlight biologically
derived and synthetic polymer scaffolds, as well as polymer–adjuvant
systems and stimuli-responsive polymers loaded with adjuvants, that
can invoke an immune response. We present synthetic considerations
for the design of such immunostimulatory polymers, outline methods
to target their delivery, and discuss their application in therapeutics.
Finally, we conclude with our opinions on the design of next-generation
immunostimulatory polymers, new applications of immunostimulatory
polymers, and the development of improved preclinical immunocompatibility
tests for new polymers.
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Affiliation(s)
- Adam M. Weiss
- Pritzker School of Molecular Engineering, University of Chicago 5640 S. Ellis Ave., Chicago, Illinois 60637, United States
- Department of Chemistry, University of Chicago 5735 S Ellis Ave., Chicago, Illinois 60637, United States
| | - Samir Hossainy
- Pritzker School of Molecular Engineering, University of Chicago 5640 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Stuart J. Rowan
- Pritzker School of Molecular Engineering, University of Chicago 5640 S. Ellis Ave., Chicago, Illinois 60637, United States
- Department of Chemistry, University of Chicago 5735 S Ellis Ave., Chicago, Illinois 60637, United States
| | - Jeffrey A. Hubbell
- Pritzker School of Molecular Engineering, University of Chicago 5640 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Aaron P. Esser-Kahn
- Pritzker School of Molecular Engineering, University of Chicago 5640 S. Ellis Ave., Chicago, Illinois 60637, United States
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8
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Müllner M. Molecular polymer bottlebrushes in nanomedicine: therapeutic and diagnostic applications. Chem Commun (Camb) 2022; 58:5683-5716. [PMID: 35445672 DOI: 10.1039/d2cc01601j] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Molecular polymer bottlebrushes are densely grafted, individual macromolecules with nanoscale proportions. The last decade has seen an increased focus on this material class, especially in nanomedicine and for biomedical applications. This Feature Article provides an overview of major developments in this area to highlight the many opportunities that these polymer architectures bring to nano-bio research. The article covers aspects of bottlebrush synthesis and summarises their use in drug and gene delivery, imaging, as theranostics and as prototype materials to correlate nanoparticle structure and composition to biological function and behaviour. Areas for future research in this area are discussed.
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Affiliation(s)
- Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia. .,The University of Sydney Nano Institute (Sydney Nano), Sydney, NSW 2006, Australia
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9
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Research Progress on Triarylmethyl Radical-Based High-Efficiency OLED. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27051632. [PMID: 35268732 PMCID: PMC8911689 DOI: 10.3390/molecules27051632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 11/17/2022]
Abstract
Perchlorotrityl radical (PTM), tris (2,4,6-trichlorophenyl) methyl radical (TTM), (3,5-dichloro-4-pyridyl) bis (2,4,6 trichlorophenyl) methyl radical (PyBTM), (N-carbazolyl) bis (2,4,6-trichlorophenyl) methyl radical (CzBTM), and their derivatives are stable organic radicals that exhibit light emissions at room temperature. Since these triarylmethyl radicals have an unpaired electron, their electron spins at the lowest excited state and ground state are both doublets, and the transition from the lowest excited state to the ground state does not pose the problem of a spin-forbidden reaction. When used as OLED layers, these triarylmethyl radicals exhibit unique light-emitting properties, which can increase the theoretical upper limit of the OLED’s internal quantum efficiency (IQE) to 100%. In recent years, research on the luminescent properties of triarylmethyl radicals has attracted increasing attention. In this review, recent developments in these triarylmethyl radicals and their derivatives in OLED devices are introduced.
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10
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Hao Q, Wang J, Shen J, Gu R, Rao Y, Feng J, Wang H, Brash JL, Chen H. Robust, Anti-biofouling 2D Nanogel Films from Poly(N-vinyl caprolactam-co-vinylimidazole) Polymers. J Mater Chem B 2022; 10:3723-3733. [DOI: 10.1039/d1tb02726c] [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
In analogy with adsorbed protein films, we have fabricated a family of 2D nanofilms composed of poly(N-vinyl caprolactam-co-vinylimidazole) (PNVCL) nanogels. NVCL was copolymerized with 1-vinylimidazole (VIM), then cross-linked with α,ω-dibromoalkanes...
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11
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Kim KH, Nam J, Choi J, Seo M, Bang J. From macromonomers to bottlebrush copolymers with sequence control: synthesis, properties, and applications. Polym Chem 2022. [DOI: 10.1039/d2py00126h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bottlebrush polymers (BBPs) are a type of comb-like macromolecules with densely grafted polymeric sidechains attached to the polymer backbones, and many intriguing properties and applications have been demonstrated due to...
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12
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Lv S, Sylvestre M, Prossnitz AN, Yang LF, Pun SH. Design of Polymeric Carriers for Intracellular Peptide Delivery in Oncology Applications. Chem Rev 2021; 121:11653-11698. [PMID: 33566580 DOI: 10.1021/acs.chemrev.0c00963] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In recent decades, peptides, which can possess high potency, excellent selectivity, and low toxicity, have emerged as promising therapeutics for cancer applications. Combined with an improved understanding of tumor biology and immuno-oncology, peptides have demonstrated robust antitumor efficacy in preclinical tumor models. However, the translation of peptides with intracellular targets into clinical therapies has been severely hindered by limitations in their intrinsic structure, such as low systemic stability, rapid clearance, and poor membrane permeability, that impede intracellular delivery. In this Review, we summarize recent advances in polymer-mediated intracellular delivery of peptides for cancer therapy, including both therapeutic peptides and peptide antigens. We highlight strategies to engineer polymeric materials to increase peptide delivery efficiency, especially cytosolic delivery, which plays a crucial role in potentiating peptide-based therapies. Finally, we discuss future opportunities for peptides in cancer treatment, with an emphasis on the design of polymer nanocarriers for optimized peptide delivery.
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Affiliation(s)
| | | | - Alexander N Prossnitz
- Department of Bioengineering, University of Washington, Seattle, Washington 98195, United States
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13
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Guo M, Rosbottom I, Zhou L, Yong CW, Zhou L, Yin Q, Todorov IT, Errington E, Heng JYY. Triglycine (GGG) Adopts a Polyproline II (pPII) Conformation in Its Hydrated Crystal Form: Revealing the Role of Water in Peptide Crystallization. J Phys Chem Lett 2021; 12:8416-8422. [PMID: 34436909 DOI: 10.1021/acs.jpclett.1c01622] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Polyproline II (pPII) is a left-handed 31-helix conformation, which has been observed to be the most abundant secondary structure in unfolded peptides and proteins compared to α-helix and β-sheet. Although pPII has been reported as the most stable conformation for several unfolded short chain peptides in aqueous solution, it is rarely observed in their solid state. Here, we show for the first time a glycine homopeptide (gly-gly-gly) adopting the pPII conformation in its crystalline dihydrate structure. The single crystal X-ray structure with molecular dynamic simulation suggests that a network of water and the charged carboxylate group is critical in stabilizing the pPII conformation in solid state, offering an insight into the structures of unfolded regions of proteins and the role of water in peptide crystallization.
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Affiliation(s)
| | | | - Lina Zhou
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Chin W Yong
- Scientific Computing Department, UKRI Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, U.K
| | - Ling Zhou
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Qiuxiang Yin
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Ilian T Todorov
- Scientific Computing Department, UKRI Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, U.K
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14
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Abstract
The development of degradable polymers has commanded significant attention over the past half century. Approaches have predominantly relied on ring-opening polymerization of cyclic esters (e.g., lactones, lactides) and N-carboxyanhydrides, as well as radical ring-opening polymerizations of cyclic ketene acetals. In recent years, there has been a significant effort applied to expand the family of degradable polymers accessible via olefin metathesis polymerization. Given the excellent functional group tolerance of olefin metathesis polymerization reactions generally, a broad range of conceivable degradable moieties can be incorporated into appropriate monomers and thus into polymer backbones. This approach has proven particularly versatile in synthesizing a broad spectrum of degradable polymers including poly(ester), poly(amino acid), poly(acetal), poly(carbonate), poly(phosphoester), poly(phosphoramidate), poly(enol ether), poly(azobenzene), poly(disulfide), poly(sulfonate ester), poly(silyl ether), and poly(oxazinone) among others. In this review, we will highlight the main olefin metathesis polymerization strategies that have been used to access degradable polymers, including (i) acyclic diene metathesis polymerization, (ii) entropy-driven and (iii) enthalpy-driven ring-opening metathesis polymerization, as well as (iv) cascade enyne metathesis polymerization. In addition, the livingness or control of polymerization reactions via different strategies are highlighted and compared. Potential applications, challenges and future perspectives of this new library of degradable polyolefins are discussed. It is clear from recent and accelerating developments in this field that olefin metathesis polymerization represents a powerful synthetic tool towards degradable polymers with novel structures and properties inaccessible by other polymerization approaches.
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Affiliation(s)
- Hao Sun
- Department of Chemistry, International Institute for
Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Yifei Liang
- Department of Chemistry, International Institute for
Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Matthew P. Thompson
- Department of Chemistry, International Institute for
Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Nathan C. Gianneschi
- Department of Chemistry, International Institute for
Nanotechnology, Northwestern University, Evanston, IL 60208, USA
- Department of Materials Science & Engineering,
Department of Biomedical Engineering, Department of Pharmacology, Chemistry of Life
Processes Institute, Northwestern University, Evanston, IL 60208, USA
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15
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16
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Upadhya R, Kosuri S, Tamasi M, Meyer TA, Atta S, Webb MA, Gormley AJ. Automation and data-driven design of polymer therapeutics. Adv Drug Deliv Rev 2021; 171:1-28. [PMID: 33242537 PMCID: PMC8127395 DOI: 10.1016/j.addr.2020.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 01/01/2023]
Abstract
Polymers are uniquely suited for drug delivery and biomaterial applications due to tunable structural parameters such as length, composition, architecture, and valency. To facilitate designs, researchers may explore combinatorial libraries in a high throughput fashion to correlate structure to function. However, traditional polymerization reactions including controlled living radical polymerization (CLRP) and ring-opening polymerization (ROP) require inert reaction conditions and extensive expertise to implement. With the advent of air-tolerance and automation, several polymerization techniques are now compatible with well plates and can be carried out at the benchtop, making high throughput synthesis and high throughput screening (HTS) possible. To avoid HTS pitfalls often described as "fishing expeditions," it is crucial to employ intelligent and big data approaches to maximize experimental efficiency. This is where the disruptive technologies of machine learning (ML) and artificial intelligence (AI) will likely play a role. In fact, ML and AI are already impacting small molecule drug discovery and showing signs of emerging in drug delivery. In this review, we present state-of-the-art research in drug delivery, gene delivery, antimicrobial polymers, and bioactive polymers alongside data-driven developments in drug design and organic synthesis. From this insight, important lessons are revealed for the polymer therapeutics community including the value of a closed loop design-build-test-learn workflow. This is an exciting time as researchers will gain the ability to fully explore the polymer structural landscape and establish quantitative structure-property relationships (QSPRs) with biological significance.
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Affiliation(s)
| | | | | | | | - Supriya Atta
- Rutgers, The State University of New Jersey, USA
| | - Michael A Webb
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08540, USA
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17
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Abstract
A critical review on the synthesis, characterization, and modeling of polymer grafting is presented. Although the motivation stemmed from grafting synthetic polymers onto lignocellulosic biopolymers, a comprehensive overview is also provided on the chemical grafting, characterization, and processing of grafted materials of different types, including synthetic backbones. Although polymer grafting has been studied for many decades—and so has the modeling of polymer branching and crosslinking for that matter, thereby reaching a good level of understanding in order to describe existing branching/crosslinking systems—polymer grafting has remained behind in modeling efforts. Areas of opportunity for further study are suggested within this review.
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18
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Zhang L, Liu R, Huang Z, Xu J. How does the single unit monomer insertion technique promote kinetic analysis of activation and initiation in photo-RAFT processes? Polym Chem 2021. [DOI: 10.1039/d0py01413c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The single unit monomer insertion technique provides a simple platform for the kinetic investigation of early stage of photo-RAFT process that comprises photo-activation of initial RAFT agents and addition of RAFT leaving radicals to the monomers.
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Affiliation(s)
- Lei Zhang
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Ruizhe Liu
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Zixuan Huang
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW Sydney
- Australia
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19
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Ma X, Song H, Yan J. Electrochemically mediated gradient metallic film generation. NEW J CHEM 2021. [DOI: 10.1039/d1nj00030f] [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
Metallic films with a controlled gradient can be fabricated on substrates via electrochemically induced metallic ion deposition.
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Affiliation(s)
- Xiaoqian Ma
- Key Laboratory of Energy Materials Chemistry
- Ministry of Education
- Key Laboratory of Advanced Functional Materials
- Autonomous Region
- Institute of Applied Chemistry
| | - Huan Song
- Key Laboratory of Energy Materials Chemistry
- Ministry of Education
- Key Laboratory of Advanced Functional Materials
- Autonomous Region
- Institute of Applied Chemistry
| | - Junfeng Yan
- Key Laboratory of Energy Materials Chemistry
- Ministry of Education
- Key Laboratory of Advanced Functional Materials
- Autonomous Region
- Institute of Applied Chemistry
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20
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Tao Y, Chan HF, Shi B, Li M, Leong KW. Light: A Magical Tool for Controlled Drug Delivery. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2005029. [PMID: 34483808 PMCID: PMC8415493 DOI: 10.1002/adfm.202005029] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Indexed: 05/04/2023]
Abstract
Light is a particularly appealing tool for on-demand drug delivery due to its noninvasive nature, ease of application and exquisite temporal and spatial control. Great progress has been achieved in the development of novel light-driven drug delivery strategies with both breadth and depth. Light-controlled drug delivery platforms can be generally categorized into three groups: photochemical, photothermal, and photoisomerization-mediated therapies. Various advanced materials, such as metal nanoparticles, metal sulfides and oxides, metal-organic frameworks, carbon nanomaterials, upconversion nanoparticles, semiconductor nanoparticles, stimuli-responsive micelles, polymer- and liposome-based nanoparticles have been applied for light-stimulated drug delivery. In view of the increasing interest in on-demand targeted drug delivery, we review the development of light-responsive systems with a focus on recent advances, key limitations, and future directions.
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Affiliation(s)
- Yu Tao
- Laboratory of Biomaterials and Translational Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Hon Fai Chan
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Bingyang Shi
- International Joint Center for Biomedical Innovation, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Mingqiang Li
- Laboratory of Biomaterials and Translational Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Kam W Leong
- Department of Biomedical Engineering, Department of Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
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21
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Xie X, Zheng T, Li W. Recent Progress in Ionic Coassembly of Cationic Peptides and Anionic Species. Macromol Rapid Commun 2020; 41:e2000534. [PMID: 33225490 DOI: 10.1002/marc.202000534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/10/2020] [Indexed: 12/25/2022]
Abstract
Peptide assembly has been extensively exploited as a promising platform for the creation of hierarchical nanostructures and tailor-made bioactive materials. Ionic coassembly of cationic peptides and anionic species is paving the way to provide particularly important contribution to this topic. In this review, the recent progress of ionic coassembly soft materials derived from the electrostatic coupling between cationic peptides and anionic species in aqueous solution is systematically summarized. The presentation of this review starts from a brief background on the general importance and advantages of peptide-based ionic coassembly. After that, diverse combinations of cationic peptides with small anions, macro- and/or oligo-anions, anionic polymers, and inorganic polyoxometalates are described. Emphasis is placed on the hierarchical structures, value-added properties, and applications. The molecular design of cationic peptides and the general principles behind the ionic coassembled structures are discussed. It is summarized that the combination of interesting and unique characteristics that arise both from the chemical diversity of peptides and the wide range of anionic species may contribute in a variety of output, including drug delivery, tissue engineering, gene transfection, and antibacterial activity. The emergent new phenomena and findings are illustrated. Finally, the outlook for the peptide-based ionic coassembly systems is also presented.
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Affiliation(s)
- Xiaoming Xie
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjing Avenue 2699, Changchun, 130012, China.,Department of Chemistry, Xinzhou Teachers' University, Xinzhou, Shanxi, 034000, China
| | - Tingting Zheng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjing Avenue 2699, Changchun, 130012, China
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjing Avenue 2699, Changchun, 130012, China
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22
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Choi W, Sun H, Battistella C, Berger O, Vratsanos MA, Wang MM, Gianneschi NC. Biomolecular Densely Grafted Brush Polymers: Oligonucleotides, Oligosaccharides and Oligopeptides. Angew Chem Int Ed Engl 2020; 59:19762-19772. [PMID: 32436259 PMCID: PMC11042487 DOI: 10.1002/anie.202005379] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Indexed: 01/19/2023]
Abstract
In this Minireview, we describe synthetic polymers densely functionalized with sequence-defined biomolecular sidechains. We focus on synthetic brush polymers of oligonucleotides, oligosaccharides, and oligopeptides, prepared via graft-through polymerization from biomolecule functionalized monomers. The resulting structures are brush polymers wherein a biomolecular graft is positioned at each monomer backbone unit. We describe key synthetic milestones, identify synthetic opportunities, and highlight recent advances in the field, including biological applications.
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Affiliation(s)
- Wonmin Choi
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Hao Sun
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Claudia Battistella
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Or Berger
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Maria A. Vratsanos
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Max M. Wang
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
| | - Nathan C. Gianneschi
- Department Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA)
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23
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Choi W, Sun H, Battistella C, Berger O, Vratsanos MA, Wang MM, Gianneschi NC. Biomolecular Densely Grafted Brush Polymers: Oligonucleotides, Oligosaccharides and Oligopeptides. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wonmin Choi
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Hao Sun
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Claudia Battistella
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Or Berger
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Maria A. Vratsanos
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Max M. Wang
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
| | - Nathan C. Gianneschi
- Department Department of Chemistry Materials Science & Engineering Biomedical Engineering, Pharmacology International Institute for Nanotechnology Simpson Querrey Institute Chemistry of Life Processes Institute Lurie Cancer Center Northwestern University 2145 Sheridan Road Evanston Illinois 60208 USA
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24
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Farnaz Fazlalizadeh, Massoumi B, Banaei A, Jaymand M. A Thermal-Responsive Y-Shaped Miktoarm Amphiphilic Block Copolymer Composed of Poly(ε-caprolactone) and Poly(N-isopropylacrylamide) as a Nano-micellar Carrier for Anti-cancer Drugs. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420050061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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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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26
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Nothling MD, Fu Q, Reyhani A, Allison‐Logan S, Jung K, Zhu J, Kamigaito M, Boyer C, Qiao GG. Progress and Perspectives Beyond Traditional RAFT Polymerization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001656. [PMID: 33101866 PMCID: PMC7578854 DOI: 10.1002/advs.202001656] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/17/2020] [Indexed: 05/09/2023]
Abstract
The development of advanced materials based on well-defined polymeric architectures is proving to be a highly prosperous research direction across both industry and academia. Controlled radical polymerization techniques are receiving unprecedented attention, with reversible-deactivation chain growth procedures now routinely leveraged to prepare exquisitely precise polymer products. Reversible addition-fragmentation chain transfer (RAFT) polymerization is a powerful protocol within this domain, where the unique chemistry of thiocarbonylthio (TCT) compounds can be harnessed to control radical chain growth of vinyl polymers. With the intense recent focus on RAFT, new strategies for initiation and external control have emerged that are paving the way for preparing well-defined polymers for demanding applications. In this work, the cutting-edge innovations in RAFT that are opening up this technique to a broader suite of materials researchers are explored. Emerging strategies for activating TCTs are surveyed, which are providing access into traditionally challenging environments for reversible-deactivation radical polymerization. The latest advances and future perspectives in applying RAFT-derived polymers are also shared, with the goal to convey the rich potential of RAFT for an ever-expanding range of high-performance applications.
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Affiliation(s)
- Mitchell D. Nothling
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Qiang Fu
- Centre for Technology in Water and Wastewater Treatment (CTWW)School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW2007Australia
| | - Amin Reyhani
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Stephanie Allison‐Logan
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
| | - Kenward Jung
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN)School of Chemical EngineeringUNWSSydneyNSW2052Australia
| | - Jian Zhu
- College of ChemistryChemical Engineering and Material ScienceDepartment of Polymer Science and EngineeringSoochow UniversitySuzhou215123China
| | - Masami Kamigaito
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya UniversityFuro‐cho, Chikusa‐kuNagoya464‐8603Japan
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN)School of Chemical EngineeringUNWSSydneyNSW2052Australia
| | - Greg G. Qiao
- Polymer Science GroupDepartment of Chemical EngineeringThe University of MelbourneParkvilleVIC3010Australia
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27
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Nitrile N-oxide-terminated poly(γ-benzyl l-glutamate) (PBLG): synthesis and catalyst-free grafting onto polybutadiene (PBD) and natural rubber (NR). Polym J 2020. [DOI: 10.1038/s41428-020-0370-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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28
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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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29
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Zhu J, Sun H, Callmann CE, Thompson MP, Battistella C, Proetto MT, Carlini AS, Gianneschi NC. Paclitaxel-terminated peptide brush polymers. Chem Commun (Camb) 2020; 56:6778-6781. [PMID: 32441281 DOI: 10.1039/c9cc10023g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we report the preparation of paclitaxel-terminated peptide brush polymers wherein cell uptake and toxicity are tunable based on peptide sequence. Synthesis was enabled using a new paclitaxel-containing chain termination agent for ring-opening metathesis polymerization (ROMP). Critically, reverse phase HPLC could be used to efficiently separate peptide brush polymers consisting of one fluorophore and one terminal paclitaxel from crude polymer mixtures. These purified terminally-modified polymers showed greater potency than the original mixtures. Drug-terminated peptide brush polymers carrying positive charges exhibited enhanced cell uptake and cytotoxicity as compared to their neutral and negatively charged analogues.
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Affiliation(s)
- Jialei Zhu
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Hao Sun
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
| | - Cassandra E Callmann
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. and Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-343, USA
| | - Matthew P Thompson
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. and Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-343, USA
| | - Claudia Battistella
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
| | - Maria T Proetto
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. and Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-343, USA
| | - Andrea S Carlini
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. and Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-343, USA
| | - Nathan C Gianneschi
- Departments of Chemistry, Materials Science & Engineering, Pharmacology, and Biomedical Engineering, International Institute for Nanotechnology, Chemistry of Life Processes Institute, and Simpson Querrey Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. and Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-343, USA
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30
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Wang JJ, Qian Y, Qian C, Yao JY, Bi XL. Paclitaxel-loaded cyclodextrin-cored unimolecular micelles and their in vivo behavior. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Study of the Potential of the Capsule Shell Based on Natural Polysaccharides in Targeted Delivery of the L-Phenylalanine Ammonia-Lyase Enzyme Preparation. Pharmaceuticals (Basel) 2020; 13:ph13040063. [PMID: 32283743 PMCID: PMC7243110 DOI: 10.3390/ph13040063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/03/2020] [Accepted: 04/07/2020] [Indexed: 12/14/2022] Open
Abstract
The treatment of classical phenylketonuria is currently represented by many new methods of disease management. A promising method is the use of the enzyme L-phenylalanine ammonia-lyase (PAL) in various forms. The widespread use of enzyme preparations in therapy is limited by a lack of understanding of the mechanisms and systems of the targeted transport of PAL into certain organs and tissues as a result of the incorporation of a drug into the carrier. To ensure the stability of enzymes during the delivery process, encapsulation is preferable, which, as a rule, ensures the preservation of the qualitative characteristics of the enzymes orally applied to the environmental effects of the gastrointestinal tract (acidity, temperature, oxidation, etc.). Capsule preparations showed sufficient stability in the model gastric fluids and sustained release of the drug in the simulated intestinal fluid. Currently, there is a wide range of polymers used for encapsulation. The use of natural sources in the production technology of capsule systems improves bioavailability, controls the release, and prolongs the half-life of active substances. The advantage of this method is that the used enzyme is completely protected by the cell membranes of the capsules, which preserve its stability in the aggressive environment of the gastrointestinal tract. Capsules were obtained on the basis of compositions of hydrocolloids of plant origin. The potential of the developed capsules for targeted delivery of the enzyme preparation was studied. The degradation of the encapsulated form of the PAL enzyme preparation was studied in vitro in model bio-relevant media simulating the gastric and intestinal environment. The dynamics of the breakdown of the capsule shell allow us to expect that the release of L-phenylalanine ammonia-lyase from capsules based on plant hydrocolloids will occur no earlier than reaching the upper intestines, where the interaction with the protein components of the consumed food products to neutralize phenylalanine should occur.
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Shen L, Li Y, Lu Q, Qi X, Wu X, Zhou Z, Shen J. Directed arrangement of siRNA via polymerization-induced electrostatic self-assembly. Chem Commun (Camb) 2020; 56:2411-2414. [PMID: 31994560 DOI: 10.1039/c9cc08858j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, polymerization-induced electrostatic self-assembly (PIESA) is conducted to mediate the self-assembly behavior of short interfering RNA (siRNA) for the first time. In PIESA, siRNA not only formed a simple electrostatic polyplex with positively charged polycations, but also facilitated directed self-assembly due to the molecular rigidity of siRNA, leading to appealing nanotubes.
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Affiliation(s)
- Liangliang Shen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325027, P. R. China
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Mao W, Lee S, Shin JU, Yoo HS. Surface-Initiated Atom Transfer Polymerized Anionic Corona on Gold Nanoparticles for Anti-Cancer Therapy. Pharmaceutics 2020; 12:pharmaceutics12030261. [PMID: 32183045 PMCID: PMC7150926 DOI: 10.3390/pharmaceutics12030261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 01/25/2023] Open
Abstract
Surface initiated atom transfer radical polymerization (SI-ATRP) documented a simple but efficient technique to grow a dense polymer layer on any surface. Gold nanoparticles (AuNPs) give a broad surface to immobilize sulfhyryl group-containing initiators for SI-ATRP; in addition, AuNPs are the major nanoparticulate carriers for delivery of anti-cancer therapeutics, since they are biocompatible and bioinert. In this work, AuNPs with a disulfide initiator were polymerized with sulfoethyl methacrylate by SI-ATRP to decorate the particles with anionic corona, and branched polyethyeleneimine (PEI) and siRNA were sequentially layered onto the anionic corona of AuNP by electrostatic interaction. The in vitro anti-cancer effect confirmed that AuNP with anionic corona showed higher degrees of apoptosis as well as suppression of the oncogene expression in a siRNA dose-dependent manner. The in vivo study of tumor-bearing nude mice revealed that mice treated with c-Myc siRNA-incorporated AuNPs showed dramatically decreased tumor size in comparison to those with free siRNA for 4 weeks. Furthermore, histological examination and gene expression study revealed that the decorated AuNP significantly suppressed c-Myc expression. Thus, we envision that the layer-by-layer assembly on the anionic brushes can be potentially used to incorporate nucleic acids onto metallic particles with high transfection efficiency.
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Affiliation(s)
- Wei Mao
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Korea; (W.M.); (S.L.); (J.U.S.)
| | - Sol Lee
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Korea; (W.M.); (S.L.); (J.U.S.)
| | - Ji Un Shin
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Korea; (W.M.); (S.L.); (J.U.S.)
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Korea; (W.M.); (S.L.); (J.U.S.)
- Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
- Correspondence: ; Tel.: +82-33-250-6563
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Callmann CE, Thompson MP, Gianneschi NC. Poly(peptide): Synthesis, Structure, and Function of Peptide-Polymer Amphiphiles and Protein-like Polymers. Acc Chem Res 2020; 53:400-413. [PMID: 31967781 PMCID: PMC11042489 DOI: 10.1021/acs.accounts.9b00518] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this Account, we describe the organization of functional peptides as densely arrayed side chains on polymer scaffolds which we introduce as a new class of material called poly(peptide). We describe two general classes of poly(peptide): (1) Peptide-Polymer Amphiphiles (PPAs), which consist of block copolymers with a dense grouping of peptides arrayed as the side chains of the hydrophilic block and connected to a hydrophobic block that drives micelle assembly, and (2) Protein-like Polymers (PLPs), wherein peptide-brush polymers are composed from monomers, each containing a peptide side chain. Peptides organized in this manner imbue polymers or polymeric nanoparticles with a range of functional qualities inherent to their specific sequence. Therefore, polymers or nanoparticles otherwise lacking bioactivity or responsiveness to stimuli, once linked to a peptide of choice, can now bind proteins, enter cells and tissues, have controlled and switchable biodistribution patterns, and be enzyme substrates (e.g., for kinases, phosphatases, proteases). Indeed, where peptide substrates are incorporated, kinetically or thermodynamically driven morphological transitions can be enzymatically induced in the polymeric material. Synergistically, the polymer enforces changes in peptide activity and function by virtue of packing and constraining the peptide. The scaffold can protect peptides from proteolysis, change the pharmacokinetic profile of an intravenously injected peptide, increase the cellular uptake of an otherwise cell impermeable therapeutic peptide, or change peptide substrate activity entirely. Moreover, in addition to the sequence-controlled peptides (generated by solid phase synthesis), the polymer can carry its own sequence-dependent information, especially through living polymerization strategies allowing well-defined blocks and terminal labels (e.g., dyes, contrast agents, charged moieties). Hence, the two elements, peptide and polymer, cooperate to yield materials with unique function and properties quite apart from each alone. Herein, we describe the development of synthetic strategies for accessing these classes of biomolecule polymer conjugates. We discuss the utility of poly(peptide)-based materials in a range of biomedical applications, including imaging of diseased tissues (myocardial infarction and cancer), delivering small molecule drugs to tumors with high specificity, imparting cell permeability to otherwise impermeable peptides, protecting bioactive peptides from proteolysis in harsh conditions (e.g., stomach acid and whole blood), and transporting proteins into traditionally difficult-to-transfect cell types, including stem cells. Poly(peptide) materials offer new properties to both the constituent peptides and to the polymers, which can be tuned by the design of the oligopeptide sequence, degree of polymerization, peptide arrangement on the polymer backbone, and polymer backbone chemistry. These properties establish this approach as valuable for the development of peptides as medicines and materials in a range of settings.
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Affiliation(s)
- Cassandra E. Callmann
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew P. Thompson
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Nathan C. Gianneschi
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Departments of Chemistry, Materials Science & Engineering, Biomedical Engineering, and Pharmacology, International Institute of Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
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Song P, Guo R, Ma W, Wang L, Ma F, Wang R. Synthesis of CO2-based polycarbonate-g-polystyrene copolymers via NMRP. Chem Commun (Camb) 2020; 56:9493-9496. [DOI: 10.1039/d0cc03665j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis of CO2-based APC-graft-polystyrene copolymers via NMRP.
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Affiliation(s)
- Pengfei Song
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
| | - Rong Guo
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
| | - Wei Ma
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
| | - Liyan Wang
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
| | - Fangfang Ma
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
| | - Rongmin Wang
- College of Chemistry and Chemical Engineering
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials
- Northwest Normal University
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The Influence of Initiator Concentration on Selected Properties on Poly- N-Vinylcaprolactam Nanoparticles. NANOMATERIALS 2019; 9:nano9111577. [PMID: 31703338 PMCID: PMC6915650 DOI: 10.3390/nano9111577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 01/12/2023]
Abstract
The thermosensitive polymers of N-vinylcaprolactam P1, P2, P3, P4, and P5 were synthesized via the surfactant free precipitation polymerization (SFPP) at 70 °C in the presence of cationic initiator 2,2’-azobis[2-methylpropionamidine] dihydrochloride (AMPA). The influence of various concentrations of initiator AMPA on particle size, aggregation and lower critical temperature solution (LCST) was investigated by dynamic light scattering (DLS) measurement. The conductivity was measured in the course of the synthesis and during temperature decrease of the reaction mixtures. The polymers were characterized by Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy (ATR-FTIR), 1H NMR, and thermogravimetric analysis. Thermal parameters of the degradations process were investigated using thermogravimetric analysis (TGA/DTA) under non-isothermal conditions in N2 atmosphere. The samples were characterized by powder X-ray diffraction analysis (PXRD).The hydrodynamic diameter (HD), polydispersity index (PDI) and zeta potential (ZP) were measured in aqueous dispersions of the synthesized polymers in temperature 18–45 °C. HD and PDI values at 18 °C were 137.23 ± 67.65 nm (PDI = 0.53 ± 0.18), 83.40 ± 74.46 nm (PDI = 0.35 ± 0.08), 22.11 ± 0.29 nm (PDI = 0.45 ± 0.05), 29.27 ± 0.50 nm (PDI = 0.41 ± 0.04), 39.18 ± 0.57 nm (PDI = 0.38 ± 0.01) for P1, P2, P3, P4, and P5, respectively. The aqueous solutions of the obtained polymers at 18–45 °C had a positive charge. ZP’s for P1, P2, P3, P4, and P5 polymers at 18 °C were 11.64 ± 4.27 mV, 12.71 ± 3.56 mV, 3.24 ± 0.10 mV, 0.77 ± 0.28 mV, 1.78 ± 0.56 mV respectively. The LCST range was between 32 and 38 °C. We conclude that the concentration of initiator affects the size of obtained polymeric spheres and theirs LCST.
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