1
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Arenhoevel J, Schmitt AC, Kerkhoff Y, Ahmadi V, Quaas E, Ludwig K, Achazi K, Nie C, Bej R, Haag R. Mucin-Inspired Polymeric Fibers for Herpes Simplex Virus Type 1 Inhibition. Macromol Biosci 2024:e2400120. [PMID: 38801012 DOI: 10.1002/mabi.202400120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/10/2024] [Indexed: 05/29/2024]
Abstract
Mucus lines the epithelial cells at the biological interface and is the first line of defense against multiple viral infections. Mucins, the gel-forming components of mucus, are high molecular weight glycoproteins and crucial for preventing infections by binding pathogens. Consequently, mimicking mucins is a promising strategy for new synthetic virus inhibitors. In this work, synthetic mucin-inspired polymers (MIPs) as potential inhibitors of herpes simplex virus 1 (HSV-1) are investigated. By using a telechelic reversible addition-fragmentation chain-transfer (RAFT) polymerization technique, a new dendronized polysulfate p(G1AAm-OSO3)PDS with an amide-backbone similar to the native mucin glycoproteins is synthesized. p(G1AAm-OSO3)PDS shows mucin-like elongated fiber structure, as revealed in cryo-electron microscopy (cryo-EM) imaging, and its HSV-1 inhibition activity together with its previously reported methacrylate analogue p(G1MA-OSO3)PDS is tested. Both of the sulfated MIPs show strong HSV-1 inhibition in plaque reduction assays with IC50 values in lower nanomolar range (<3 × 10-9 m) and demonstrate a high cell compatibility (CC50 > 1.0 mg mL-1) with lower anticoagulant activity than heparin. In addition, the prophylactic and therapeutic activity of both MIPs is assessed in pre- and post-infection inhibition assays and clearly visualize their high potential for application using fluorescent microscopy imaging of infected cells.
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Affiliation(s)
- Justin Arenhoevel
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Ann-Cathrin Schmitt
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Yannic Kerkhoff
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Vahid Ahmadi
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Elisa Quaas
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Kai Ludwig
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Katharina Achazi
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Chuanxiong Nie
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Raju Bej
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
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2
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Liu H, Lu HH, Alp Y, Wu R, Thayumanavan S. Structural Determinants of Stimuli-Responsiveness in Amphiphilic Macromolecular Nano-assemblies. Prog Polym Sci 2024; 148:101765. [PMID: 38476148 PMCID: PMC10927256 DOI: 10.1016/j.progpolymsci.2023.101765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Stimuli-responsive nano-assemblies from amphiphilic macromolecules could undergo controlled structural transformations and generate diverse macroscopic phenomenon under stimuli. Due to the controllable responsiveness, they have been applied for broad material and biomedical applications, such as biologics delivery, sensing, imaging, and catalysis. Understanding the mechanisms of the assembly-disassembly processes and structural determinants behind the responsive properties is fundamentally important for designing the next generation of nano-assemblies with programmable responsiveness. In this review, we focus on structural determinants of assemblies from amphiphilic macromolecules and their macromolecular level alterations under stimuli, such as the disruption of hydrophilic-lipophilic balance (HLB), depolymerization, decrosslinking, and changes of molecular packing in assemblies, which eventually lead to a series of macroscopic phenomenon for practical purposes. Applications of stimuli-responsive nano-assemblies in delivery, sensing and imaging were also summarized based on their structural features. We expect this review could provide readers an overview of the structural considerations in the design and applications of nanoassemblies and incentivize more explorations in stimuli-responsive soft matters.
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Affiliation(s)
- Hongxu Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Hung-Hsun Lu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Yasin Alp
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Ruiling Wu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Center for Bioactive Delivery, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, United States
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3
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Chiu PF, Chang CK, Huang PS, Lin YY, Lin CS, Yang HY, Hsu LC, Yu LCH, Liang PH. Design, Synthesis, and Evaluation of Glucose Transporter Inhibitor-SN38 Conjugates for Targeting Colorectal Cancer. J Med Chem 2023. [PMID: 37413981 DOI: 10.1021/acs.jmedchem.3c00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Irinotecan (1), a prodrug of SN38 (2) approved by the US Food and Drug Administration for treating colorectal cancer, lacks specificity and causes many side effects. To increase the selectivity and therapeutic efficacy of this drug, we designed and synthesized conjugates of SN38 and glucose transporter inhibitors (phlorizin (5) or phloretin (6)), which could be hydrolyzed by glutathione or cathepsin to release SN38 in the tumor microenvironment, as a proof of concept. These conjugates (8, 9, and 10) displayed better antitumor efficacy with lower systemic exposure to SN38 in an orthotopic colorectal cancer mouse model compared with irinotecan at the same dosage. Further, no major adverse effects of the conjugates were observed during treatment. Biodistribution studies showed that conjugate 10 could induce higher concentrations of free SN38 in tumor tissues than irinotecan at the same dosage. Thus, the developed conjugates exhibit potential for treating colorectal cancer.
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Affiliation(s)
- Pei-Fang Chiu
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Chun-Kai Chang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Pin-Shuo Huang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - You-Yu Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Chung-Shun Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Hui-Yi Yang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Lih-Ching Hsu
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Linda Chia-Hui Yu
- Graduate Institute of Physiology, National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Pi-Hui Liang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
- The Genomics Research Center, Academia Sinica, Taipei 128, Taiwan
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4
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Florian DC, Bennett NE, Odziomek M, Baljon JJ, Wehbe M, Merkel AR, Fischer MA, Savona MR, Rhoades JA, Guelcher SA, Wilson JT. Nanoparticle STING Agonist Reprograms the Bone Marrow to an Antitumor Phenotype and Protects Against Bone Destruction. CANCER RESEARCH COMMUNICATIONS 2023; 3:223-234. [PMID: 36968140 PMCID: PMC10035525 DOI: 10.1158/2767-9764.crc-22-0180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 11/23/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
When breast cancer metastasizes to bone, treatment options are limited. Failure to treat bone metastases is thought to be due to therapy-resistant features of the bone marrow microenvironment. Using a murine model of bone metastatic mammary carcinoma, we demonstrate that systemic delivery of polymer nanoparticles loaded with cyclic dinucleotide (CDN) agonists of stimulator of interferon genes (STING) inhibited tumor growth and bone destruction after 7 days of treatment. Each dose of STING-activating nanoparticles trafficked to the bone marrow compartment and was retained within the tumor microenvironment for over 24 hours, enhancing antitumor immunity through proinflammatory cytokine production and early T-cell activation. While acquired resistance mechanisms, including increased levels of immunosuppressive cytokines and the infiltration of regulatory T cells, ultimately limited antitumor efficacy after 2 weeks of treatment, bone protective effects remained. Overall, these studies demonstrate that STING pathway activation, here enabled using a nanomedicine approach to enhance CDN delivery to bone metastatic sites, can reprogram the immune contexture of the bone marrow to an antitumor phenotype that inhibits bone colonization of metastatic breast cancer cells and protects from tumor-mediated bone destruction. Significance Bone metastases are difficult to treat due to the inaccessibility of the bone marrow compartment and the immunosuppressive microenvironment that protects resident stem cells. Packaging a STING agonist into a nanoparticle that enables systemic administration and drug accumulation at tumor sites overcomes both barriers to stymie metastatic breast cancer growth.
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Affiliation(s)
- David C. Florian
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Natalie E. Bennett
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Mateusz Odziomek
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jessalyn J. Baljon
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Mohamed Wehbe
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Tennessee
| | - Alyssa R. Merkel
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Tennessee
| | - Melissa A. Fischer
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Tennessee
| | - Michael R. Savona
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Tennessee
- Vanderbilt Ingram Cancer Center, Nashville, Tennessee
| | - Julie A. Rhoades
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Tennessee
| | - Scott A. Guelcher
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee
| | - John T. Wilson
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
- Vanderbilt Ingram Cancer Center, Nashville, Tennessee
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee
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5
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De Mel J, Hossain M, Shofolawe-Bakare O, Mohammad SA, Rasmussen E, Milloy K, Shields M, Roth EW, Arora K, Cueto R, Tang SC, Wilson JT, Smith AE, Werfel TA. Dual-Responsive Glycopolymers for Intracellular Codelivery of Antigen and Lipophilic Adjuvants. Mol Pharm 2022; 19:4705-4716. [PMID: 36374992 PMCID: PMC10013197 DOI: 10.1021/acs.molpharmaceut.2c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Traditional approaches to vaccines use whole organisms to trigger an immune response, but they do not typically generate robust cellular-mediated immunity and have various safety risks. Subunit vaccines composed of proteins and/or peptides represent an attractive and safe alternative to whole organism vaccines, but they are poorly immunogenic. Though there are biological reasons for the poor immunogenicity of proteins and peptides, one other key to their relative lack of immunogenicity could be attributed to the poor pharmacokinetic properties of exogenously delivered proteins and peptides. For instance, peptides often aggregate at the site of injection and are not stable in biological fluids, proteins and peptides are rapidly cleared from circulation, and both have poor cellular internalization and endosomal escape. Herein, we developed a delivery system to address the lack of protein immunogenicity by overcoming delivery barriers as well as codelivering immune-stimulating adjuvants. The glycopolymeric nanoparticles (glycoNPs) are composed of a dual-stimuli-responsive block glycopolymer, poly[2-(diisopropylamino)ethyl methacrylate]-b-poly[(pyridyl disulfide ethyl methacrylate)-co-(methacrylamidoglucopyranose)] (p[DPA-b-(PDSMA-co-MAG)]). This polymer facilitates protein conjugation and cytosolic release, the pH-responsive release of lipophilic adjuvants, and pH-dependent membrane disruption to ensure cytosolic delivery of antigens. We synthesized p[DPA-b-(PDSMA-co-MAG)] by reversible addition-fragmentation chain transfer (RAFT) polymerization, followed by the formation and physicochemical characterization of glycoNPs using the p[DPA-b-(PDSMA-co-MAG)] building blocks. These glycoNPs conjugated the model antigen ovalbumin (OVA) and released OVA in response to elevated glutathione levels. Moreover, the glycoNPs displayed pH-dependent drug release of the model hydrophobic drug Nile Red while also exhibiting pH-responsive endosomolytic behavior as indicated by a red blood cell hemolysis assay. GlycoNPs coloaded with OVA and the toll-like receptor 7/8 (TLR-7/8) agonist Resiquimod (R848) activated DC 2.4 dendritic cells (DCs) significantly more than free OVA and R848 and led to robust antigen presentation of the OVA epitope SIINFEKL on major histocompatibility complex I (MHC-I). In sum, the dual-stimuli-responsive glycopolymer introduced here overcomes major protein and peptide delivery barriers and could vastly improve the immunogenicity of protein-based vaccines.
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Affiliation(s)
- Judith De Mel
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Mehjabeen Hossain
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
| | - Oluwaseyi Shofolawe-Bakare
- Department of Chemical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Sk Arif Mohammad
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Emily Rasmussen
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
| | - Khadeeja Milloy
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Micaela Shields
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Eric W Roth
- Northwestern University Atomic and Nanoscale Characterization Experimental Center, Evanston, Illinois, 60208, United States
| | - Karan Arora
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Rafael Cueto
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Shou-Ching Tang
- Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, Mississippi 39216, United States
| | - John T Wilson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Adam E Smith
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
- Department of Chemical Engineering, University of Mississippi, University, Mississippi 38677, United States
| | - Thomas A Werfel
- Department of Biomedical Engineering, University of Mississippi, University, Mississippi 38677, United States
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
- Department of Chemical Engineering, University of Mississippi, University, Mississippi 38677, United States
- Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, Mississippi 39216, United States
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6
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Kanjilal P, Dutta K, Thayumanavan S. Thiol-Disulfide Exchange as a Route for Endosomal Escape of Polymeric Nanoparticles. Angew Chem Int Ed Engl 2022; 61:e202209227. [PMID: 35866880 PMCID: PMC9452476 DOI: 10.1002/anie.202209227] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Indexed: 11/08/2022]
Abstract
Endosomal entrapment has remained the major bottleneck for cytosolic delivery of nanoparticle-based delivery systems. Uncovering fundamentally new pathways for endosomal escape is therefore highly sought. Herein, we report that disulfide bonds can enhance endosomal escape through contacts with cellular exofacial thiols, in addition to facilitating cellular uptake. Our results are supported through comparative analysis of polymeric nanogels with variable accessibility to disulfide bonds by placing these functionalities at the core or the shell of the nanogels. The findings here inform future chemical design of delivery vehicles.
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Affiliation(s)
- Pintu Kanjilal
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Kingshuk Dutta
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - S Thayumanavan
- Department of Chemistry, Department of Biomedical Engineering, Molecular and Cellular Biology Program, and Centre for Bioactive Delivery-Institute for Applied Life Sciences, University of Massachusetts Amherst, Amherst, MA 01003, United States
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7
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Kanjilal P, Dutta K, Thayumanavan S. Thiol‐Disulfide Exchange as a Route for Endosomal Escape of Polymeric Nanoparticles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pintu Kanjilal
- University of Massachusetts Amherst chemistry UNITED STATES
| | - Kingshuk Dutta
- University of Massachusetts Amherst Chemistry UNITED STATES
| | - Sankaran Thayumanavan
- University of Massachusetts Amherst Department of Chemistry 710 N. Pleasant Street 01003 Amherst UNITED STATES
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8
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Altinbasak I, Kocak S, Sanyal R, Sanyal A. Fast-Forming Dissolvable Redox-Responsive Hydrogels: Exploiting the Orthogonality of Thiol-Maleimide and Thiol-Disulfide Exchange Chemistry. Biomacromolecules 2022; 23:3525-3534. [PMID: 35696518 PMCID: PMC9472223 DOI: 10.1021/acs.biomac.2c00209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Fast-forming yet
easily dissolvable hydrogels (HGs) have potential
applications in wound healing, burn incidences, and delivery of therapeutic
agents. Herein, a combination of a thiol–maleimide conjugation
and thiol–disulfide exchange reaction is employed to fabricate
fast-forming HGs which rapidly dissolve upon exposure to dithiothreitol
(DTT), a nontoxic thiol-containing hydrophilic molecule. In particular,
maleimide disulfide-terminated telechelic linear poly(ethylene glycol)
(PEG) polymer and PEG-based tetrathiol macromonomers are employed
as gel precursors, which upon mixing yield HGs within a minute. The
selectivity of the thiol–maleimide conjugation in the presence
of a disulfide linkage was established through 1H NMR spectroscopy
and Ellman’s test. Rapid degradation of HGs in the presence
of thiol-containing solution was evident from the reduction in storage
modulus. HGs encapsulated with fluorescent dye-labeled dextran polymers
and bovine serum albumin were fabricated, and their cargo release
was investigated under passive and active conditions upon exposure
to DTT. One can envision that the rapid gelation and fast on-demand
dissolution under relatively benign conditions would make these polymeric
materials attractive for a range of biomedical applications.
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Affiliation(s)
- Ismail Altinbasak
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Salli Kocak
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Bebek, Istanbul 34342, Turkey
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9
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Cengiz B, Ejderyan N, Sanyal A. Functional polymeric coatings: thiol-maleimide ‘click’ chemistry as a powerful surface functionalization tool. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2071725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Busra Cengiz
- Department of Chemistry, Bogazici University, Istanbul, Turkey
| | - Nora Ejderyan
- Department of Chemistry, Bogazici University, Istanbul, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Istanbul, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, Turkey
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10
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Kilic Boz R, Aydin D, Kocak S, Golba B, Sanyal R, Sanyal A. Redox-Responsive Hydrogels for Tunable and "On-Demand" Release of Biomacromolecules. Bioconjug Chem 2022; 33:839-847. [PMID: 35446015 PMCID: PMC9121344 DOI: 10.1021/acs.bioconjchem.2c00094] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
In
recent years, stimuli-responsive degradation has emerged as
a desirable design criterion for functional hydrogels to tune the
release of encapsulated payload as well as ensure degradation of the
gel upon completion of its function. Herein, redox-responsive hydrogels
with a well-defined network structure were obtained using a highly
efficient thiol-disulfide exchange reaction. In particular, gelation
occurred upon combining thiol-terminated tetra-arm polyethylene glycol
(PEG) polymers with linear telechelic PEG-based polymers containing
pyridyl disulfide units at their chain ends. Rapid gelation proceeds
with good conversions (>85%) to yield macroporous hydrogels possessing
high water uptake. Furthermore, due to the presence of the disulfide
linkages, the thus-obtained hydrogels can self-heal. The obtained
hydrogels undergo complete degradation when exposed to environments
rich in thiol-containing agents such as dithiothreitol (DTT) and L-glutathione
(GSH). Also, the release profile of encapsulated protein, namely,
bovine serum albumin, can be tuned by varying the molecular weight
of the polymeric precursors. Additionally, it was demonstrated that
complete dissolution of the hydrogel to rapidly release the encapsulated
protein occurs upon treating these hydrogels with DTT. Cytotoxicity
evaluation of the hydrogels and their degradation products indicated
the benign nature of these hydrogels. Additionally, the cytocompatible
nature of these materials was also evident from a live/dead cell viability
assay. One can envision that the facile fabrication and their ability
to degrade on-demand and release their payload will make these benign
polymeric scaffolds attractive for various biomedical applications.
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Affiliation(s)
- Ruveyda Kilic Boz
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Duygu Aydin
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Salli Kocak
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Bianka Golba
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
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11
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Wang J, Zhou Q, Li X, Dutta D, Ge Z. Glutathione-Triggered Mitochondria-Targeting Reassembly from Polymeric Micelles to Nanofibers for a Synergistic Anticancer Effect. ACS Macro Lett 2022; 11:543-548. [PMID: 35575322 DOI: 10.1021/acsmacrolett.2c00059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nanofibers self-assembled from peptides have attracted much attention to inhibit cancer cells. However, there are still some disadvantages, including high concentration for self-assembly and incapability to load drugs, which limit their applications. In this report, we rationally integrate self-assembled peptides, glutathione-sensitive disulfide bonds, and mitochondrial targeting moieties into the amphiphilic block copolymer to construct the nanocarriers, which can be used to load anticancer drug doxorubicin (DOX). After cellular internalization, the nanocarriers can reassemble from micelles to nanofibers under the trigger by glutathione and locate in mitochondria. The released DOX and nanofibers induce mitochondrial dysfunction and activate the apoptosis pathway to synergistically inhibit tumor cells. This organelle-specific drug delivery system with reassembly capability from micelles to nanofibers shows great potential for effectively killing cancer cells.
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Affiliation(s)
- Jingbo Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qinghao Zhou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiang Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Debabrata Dutta
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
- School of Chemistry, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
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12
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Morgan TE, Floyd TG, Marzullo BP, Wootton CA, Barrow MP, Bristow AWT, Perrier S, O'Connor PB. Stochasticity of poly(2-oxazoline) oligomer hydrolysis determined by tandem mass spectrometry. Polym Chem 2022; 13:4162-4169. [PMID: 35923808 PMCID: PMC9294869 DOI: 10.1039/d2py00437b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/01/2022] [Indexed: 11/30/2022]
Abstract
Understanding modification of synthetic polymer structures is necessary for their accurate synthesis and potential applications. In this contribution, a series of partially hydrolyzed poly(2-oxazoline) species were produced forming poly[(2-polyoxazoline)-co-(ethylenimine)] (P(EtOx-co-EI)) copolymers; EI being the hydrolyzed product of Ox. Bulk mass spectrometry (MS) measurements accurately measured the EI content. Tandem mass spectrometry analysis of the EI content in the copolymer samples determined the distribution of each monomer within the copolymer and corresponded to a theoretically modelled random distribution. The EI distribution across the polymers was shown to be effected by the choice of terminus, with a permanent hydrolysis event observed at an OH terminus. A neighbouring group effect wasn't observed at the polymer length analysed (approximately 25-mer species), suggesting that previously observed neighbouring group effects require a larger polymer chain. Although clearly useful for random polymer distribution this approach may be applied to many systems containing non-specific modifications to determine if they are directed or random locations across peptides, proteins, polymers, and nucleic acids. Tandem mass spectrometry can be used to better understand modification sites of synthetic polymer structures providing more complete chemical knowledge which is necessary for their accurate synthesis and potential applications.![]()
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Affiliation(s)
- Tomos E Morgan
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | - Thomas G Floyd
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | - Bryan P Marzullo
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | | | - Mark P Barrow
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | - Anthony W T Bristow
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca Charter Way Macclesfield SK102NA UK
| | - Sébastien Perrier
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
- Warwick Medical School, University of Warwick Coventry CV4 7AL UK
- Faculty of Pharmaceutical Sciences, Monash University 381 Royal Parade Parkville VIC 3052 Australia
| | - Peter B O'Connor
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
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13
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Lang X, Xu Z, Li Q, Yuan L, Thumu U, Zhao H. Modulating the reactivity of polymer with pendant ester groups by methylation reaction for preparing functional polymers. Polym Chem 2022. [DOI: 10.1039/d2py00978a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Chemical reaction triggered the reactivity of polymeric esters.
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Affiliation(s)
- Xianhua Lang
- Institute of Fundamental and Frontier Sciences (IFFS), University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
- School of Chemical Engineering, Polymer research institute, Sichuan University (SCU), Chengdu 610065, China
| | - Zhao Xu
- School of Chemical Engineering, Polymer research institute, Sichuan University (SCU), Chengdu 610065, China
| | - Qincong Li
- School of Chemical Engineering, Polymer research institute, Sichuan University (SCU), Chengdu 610065, China
| | - Ling Yuan
- School of Chemical Engineering, Polymer research institute, Sichuan University (SCU), Chengdu 610065, China
| | - Udayabhaskararao Thumu
- Institute of Fundamental and Frontier Sciences (IFFS), University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
| | - Hui Zhao
- Institute of Fundamental and Frontier Sciences (IFFS), University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
- School of Chemical Engineering, Polymer research institute, Sichuan University (SCU), Chengdu 610065, China
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14
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Leer K, Cinar G, Solomun JI, Martin L, Nischang I, Traeger A. Core-crosslinked, temperature- and pH-responsive micelles: design, physicochemical characterization, and gene delivery application. NANOSCALE 2021; 13:19412-19429. [PMID: 34591061 DOI: 10.1039/d1nr04223h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Stimuli-responsive block copolymer micelles can provide tailored properties for the efficient delivery of genetic material. In particular, temperature- and pH-responsive materials are of interest, since their physicochemical properties can be easily tailored to meet the requirements for successful gene delivery. Within this study, a stimuli-responsive micelle system for gene delivery was designed based on a diblock copolymer consisting of poly(N,N-diethylacrylamide) (PDEAm) as a temperature-responsive segment combined with poly(aminoethyl acrylamide) (PAEAm) as a pH-responsive, cationic segment. Upon temperature increase, the PDEAm block becomes hydrophobic due to its lower critical solution temperature (LCST), leading to micelle formation. Furthermore, the monomer 2-(pyridin-2-yldisulfanyl)ethyl acrylate (PDSAc) was incorporated into the temperature-responsive PDEAm building block enabling disulfide crosslinking of the formed micelle core to stabilize its structure regardless of temperature and dilution. The cloud points of the PDEAm block and the diblock copolymer were investigated by turbidimetry and fluorescence spectroscopy. The temperature-dependent formation of micelles was analyzed by dynamic light scattering (DLS) and elucidated in detail by an analytical ultracentrifuge (AUC), which provided detailed insights into the solution dynamics between polymers and assembled micelles as a function of temperature. Finally, the micelles were investigated for their applicability as gene delivery vectors by evaluation of cytotoxicity, pDNA binding, and transfection efficiency using HEK293T cells. The investigations showed that core-crosslinking resulted in a 13-fold increase in observed transfection efficiency. Our study presents a comprehensive investigation from polymer synthesis to an in-depth physicochemical characterization and biological application of a crosslinked micelle system including stimuli-responsive behavior.
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Affiliation(s)
- Katharina Leer
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Gizem Cinar
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Jana I Solomun
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Liam Martin
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Anja Traeger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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15
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Chen X, Michinobu T. Postpolymerization Modification: A Powerful Tool for the Synthesis and Function Tuning of Stimuli‐Responsive Polymers. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xu Chen
- Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan
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16
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Sheima Y, Yuts Y, Frauenrath H, Opris DM. Polysiloxanes Modified with Different Types and Contents of Polar Groups: Synthesis, Structure, and Thermal and Dielectric Properties. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00362] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yauhen Sheima
- Functional Polymers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux, Station 12, CH 1015 Lausanne, Switzerland
| | - Yulia Yuts
- Functional Polymers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Holger Frauenrath
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux, Station 12, CH 1015 Lausanne, Switzerland
| | - Dorina M. Opris
- Functional Polymers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
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17
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Du Y, Zeng Q, Yuan L, He L. Post-polymerization modification based on reactive fluorinated polymers reaction. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1903328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yiying Du
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiugui Zeng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Ling Yuan
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu, China
| | - Lirong He
- Polymer Research Insititute, Sichuan University, Chengdu, China
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18
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Bej R, Ghosh A, Sarkar J, Das BB, Ghosh S. Thiol-Disulfide Exchange Reaction Promoted Highly Efficient Cellular Uptake of Pyridyl Disulfide Appended Nonionic Polymers. Chembiochem 2020; 21:2921-2926. [PMID: 32424847 DOI: 10.1002/cbic.202000303] [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: 05/13/2020] [Indexed: 01/04/2023]
Abstract
The intracellular transport of molecules, macromolecules or materials is a key step in probing cellular structure and function, as well as regulating a plethora of physical and chemical events for treating disease. This communication reveals direct cellular uptake of pyridyl-disulfide (Py-Ds)-conjugated nonionic and biocompatible macromolecules with the aid of rapid exchange of the highly reactive Py-Ds groups with exofacial cell-surface thiols. Confocal microscopy and flow cytometry analysis confirmed highly efficient cellular uptake of Py-Ds-appended polymers (>50 % in 15 min) by avoiding lysosome as a consequence of thiol-disulfide exchange in the cell surface. In contrast, a control polymer lacking the Py-Ds group followed caveolae-mediated endocytosis. Other control polymers containing either the pyridine group (but not disulfide) or the disulfide group (but not pyridine) revealed significantly low cellular uptake, and thus essential role of the highly reactive Py-Ds group was established beyond doubt.
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Affiliation(s)
- Raju Bej
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Arijit Ghosh
- School of Biological Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Jayita Sarkar
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Benu Brata Das
- School of Biological Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India
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19
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Lin YN, Khan S, Song Y, Dong M, Shen Y, Tran DK, Pang C, Zhang F, Wooley KL. A Tale of Drug-Carrier Optimization: Controlling Stimuli Sensitivity via Nanoparticle Hydrophobicity through Drug Loading. NANO LETTERS 2020; 20:6563-6571. [PMID: 32787153 DOI: 10.1021/acs.nanolett.0c02319] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Interactions between drug molecules, nanocarrier components, and surrounding media influence the properties and therapeutic efficacies of nanomedicines. In this study, we investigate the role that reversible covalent loading of a hydrophobic drug exerts on intra-nanoparticle physical properties and explore the utility of this payload control strategy for tuning the access of active agents and, thereby, the stimuli sensitivity of smart nanomaterials. Glutathione sensitivity was controlled via altering the degree of hydrophobic payload loading of disulfide-linked camptothecin-conjugated sugar-based nanomaterials. Increases in degrees of camptothecin conjugation (fCPT) decreased aqueous accessibility and reduced glutathione-triggered release. Although the lowest fCPT gave the fastest camptothecin release, it resulted in the lowest camptothecin concentration. Remarkably, the highest fCPT resulted in a 5.5-fold improved selectivity against cancer vs noncancerous cells. This work represents an advancement in drug carrier design by demonstrating the importance of controlling the amount of drug loading on the overall payload and its availability.
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Affiliation(s)
- Yen-Nan Lin
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
- College of Medicine, Texas A&M University, Bryan, Texas 77807, United States
| | - Sarosh Khan
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Yue Song
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Mei Dong
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Yidan Shen
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - David K Tran
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Ching Pang
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Fuwu Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Karen L Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
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20
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Morgan TE, Kerr A, Wootton CA, Barrow MP, Bristow AW, Perrier S, O’Connor PB. Electron Capture Dissociation of Trithiocarbonate-Terminated Acrylamide Homo- and Copolymers: A Terminus-Directed Mechanism? Anal Chem 2020; 92:12852-12859. [DOI: 10.1021/acs.analchem.0c01224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tomos E. Morgan
- Department of Chemistry, University of Warwick, Coventry, Midlands CV4 7AL, U.K
| | - Andrew Kerr
- Department of Chemistry, University of Warwick, Coventry, Midlands CV4 7AL, U.K
| | | | - Mark P. Barrow
- Department of Chemistry, University of Warwick, Coventry, Midlands CV4 7AL, U.K
| | - Anthony W.T. Bristow
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield, Cheshire SK10 2NA, U.K
| | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry, Midlands CV4 7AL, U.K
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, U.K
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Peter B. O’Connor
- Department of Chemistry, University of Warwick, Coventry, Midlands CV4 7AL, U.K
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21
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Yuan L, He L, Wang Y, Lang X, Yang F, Zhao Y, Zhao H. Two- and Three-Component Post-Polymerization Modifications Based on Meldrum’s Acid. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00482] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ling Yuan
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, China
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Lirong He
- Institut für Technische und Makromolekulare Chemie, Universität Hamburg, Bundesstraße 45, Hamburg 20146, Germany
| | - Yixi Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xianhua Lang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Feng Yang
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, China
| | - Yong Zhao
- Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, China
| | - Hui Zhao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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22
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Jiang Z, Liu H, He H, Ribbe AE, Thayumanavan S. Blended Assemblies of Amphiphilic Random and Block Copolymers for Tunable Encapsulation and Release of Hydrophobic Guest Molecules. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02595] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ziwen Jiang
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Huan He
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Alexander E. Ribbe
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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23
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Altinbasak I, Arslan M, Sanyal R, Sanyal A. Pyridyl disulfide-based thiol–disulfide exchange reaction: shaping the design of redox-responsive polymeric materials. Polym Chem 2020. [DOI: 10.1039/d0py01215g] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review provides an overview of synthetic approaches utilized to incorporate the thiol-reactive pyridyl-disulfide motif into various polymeric materials, and briefly highlights its utilization to obtain functional materials.
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Affiliation(s)
| | - Mehmet Arslan
- Yalova University
- Faculty of Engineering
- Department of Polymer Materials Engineering
- 77100 Yalova
- Turkey
| | - Rana Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
| | - Amitav Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
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24
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Jiang Z, Thayumanavan S. Disulfide-containing Macromolecules for Therapeutic Delivery. Isr J Chem 2020; 60:132-139. [PMID: 34168383 PMCID: PMC8221575 DOI: 10.1002/ijch.201900160] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Indexed: 01/10/2023]
Abstract
Development of macromolecules provides applicable platforms for the delivery of therapeutics. In this general overview, we focus on the design principles of synthetic polymers, with disulfide bonds located in either the polymer backbone or side chains. We also discuss the role of disulfide bonds, as well as the remaining questions to better understand their applications in therapeutic delivery systems.
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Affiliation(s)
- Ziwen Jiang
- Department of Chemistry, University of Massachusetts Amherst, Massachusetts 01003, United States
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Massachusetts 01003, United States
- Center for Bioactive Delivery at the Institute for Applied Life Sciences, University of Massachusetts Amherst, Massachusetts 01003, United States
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25
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Arslan M, Sanyal R, Sanyal A. Thiol-reactive thiosulfonate group containing copolymers: facile entry to disulfide-mediated polymer conjugation and redox-responsive functionalizable networks. Polym Chem 2020. [DOI: 10.1039/c9py01851d] [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
Herein, we report a synthetic approach to thiol-reactive polymers containing methanethiosulfonate groups as side chains, and demonstrate their application in post-polymerization functionalization through reversible disulfide linkages.
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Affiliation(s)
- Mehmet Arslan
- Department of Polymer Engineering
- Faculty of Engineering
- Yalova University
- Yalova
- Turkey
| | - Rana Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
| | - Amitav Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
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26
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Abstract
Synthesis, aqueous aggregation, hydrophobic guest encapsulation, non-covalent encapsulation stability and glutathione responsive degradation of amphiphilic hyperbranched polydisulfides have been reported.
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Affiliation(s)
- Raju Bej
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Priya Rajdev
- Technical Research Center
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Ranajit Barman
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
- Technical Research Center
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27
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Eom T, Khan A. Disulfides as mercapto-precursors in nucleophilic ring opening reaction of polymeric epoxides: establishing equimolar stoichiometric conditions in a thiol–epoxy ‘click’ reaction. Chem Commun (Camb) 2020; 56:7419-7422. [DOI: 10.1039/d0cc02601h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work establishes equimolar stoichiometric conditions in a thiol–epoxy ‘click’ reaction.
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Affiliation(s)
- Taejun Eom
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 02841
- Korea
| | - Anzar Khan
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 02841
- Korea
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28
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Leichner C, Jelkmann M, Bernkop-Schnürch A. Thiolated polymers: Bioinspired polymers utilizing one of the most important bridging structures in nature. Adv Drug Deliv Rev 2019; 151-152:191-221. [PMID: 31028759 DOI: 10.1016/j.addr.2019.04.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 12/13/2022]
Abstract
Thiolated polymers designated "thiomers" are obtained by covalent attachment of thiol functionalities on the polymeric backbone of polymers. In 1998 these polymers were first described as mucoadhesive and in situ gelling compounds forming disulfide bonds with cysteine-rich substructures of mucus glycoproteins and crosslinking through inter- and intrachain disulfide bond formation. In the following, it was shown that thiomers are able to form disulfides with keratins and membrane-associated proteins exhibiting also cysteine-rich substructures. Furthermore, permeation enhancing, enzyme inhibiting and efflux pump inhibiting properties were demonstrated. Because of these capabilities thiomers are promising tools for drug delivery guaranteeing a strongly prolonged residence time as well as sustained release on mucosal membranes. Apart from that, thiomers are used as drugs per se. In particular, for treatment of dry eye syndrome various thiolated polymers are in development and a first product has already reached the market. Within this review an overview about the thiomer-technology and its potential for different applications is provided discussing especially the outcome of studies in non-rodent animal models and that of numerous clinical trials. Moreover, an overview on product developments is given.
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29
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Dutta K, Bochicchio D, Ribbe AE, Alfandari D, Mager J, Pavan GM, Thayumanavan S. Symbiotic Self-Assembly Strategy toward Lipid-Encased Cross-Linked Polymer Nanoparticles for Efficient Gene Silencing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24971-24983. [PMID: 31264399 DOI: 10.1021/acsami.9b04731] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A novel "symbiotic self-assembly" strategy that integrates the advantages of biocompatible lipids with a structurally robust polymer to efficiently encapsulate and deliver siRNAs is reported. The assembly process is considered to be symbiotic because none of the assembling components are capable of self-assembly but can form well-defined nanostructures in the presence of others. The conditions of the self-assembly process are simple but have been chosen such that it offers the ability to arrive at a system that is noncationic for mitigating carrier-based cytotoxicity, efficiently encapsulate siRNA to minimize cargo loss, be effectively camouflaged to protect the siRNA from nuclease degradation, and efficiently escape the endosome to cause gene knockdown. The lipid-siRNA-polymer (L-siP) nanoassembly formation and its disassembly in the presence of an intracellular trigger have been extensively characterized experimentally and through computational modeling. The complexes have been evaluated for the delivery of four different siRNA molecules in six different cell lines, where an efficient gene knockdown is demonstrated. The reported generalized strategy has the potential to make an impact on the development of a safe and effective delivery agent for RNAi-mediated gene therapy that holds the promise of targeting several hard-to-cure diseases.
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Affiliation(s)
| | - Davide Bochicchio
- Department of Innovative Technologies , University of Applied Sciences and Arts of Southern Switzerland , CH-6928 Manno , Switzerland
| | | | | | | | - Giovanni M Pavan
- Department of Innovative Technologies , University of Applied Sciences and Arts of Southern Switzerland , CH-6928 Manno , Switzerland
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Torino , Italy
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30
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Sui B, Cheng C, Xu P. Pyridyl Disulfide Functionalized Polymers as Nanotherapeutic Platforms. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900062] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Binglin Sui
- Department of Discovery and Biomedical Sciences College of Pharmacy University of South Carolina 715 Sumter Columbia SC 29208 USA
| | - Chen Cheng
- Department of Discovery and Biomedical Sciences College of Pharmacy University of South Carolina 715 Sumter Columbia SC 29208 USA
| | - Peisheng Xu
- Department of Discovery and Biomedical Sciences College of Pharmacy University of South Carolina 715 Sumter Columbia SC 29208 USA
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31
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Jiang Z, Cui W, Mager J, Thayumanavan S. Postfunctionalization of Noncationic RNA–Polymer Complexes for RNA Delivery. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00666] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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32
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Shae D, Becker KW, Christov P, Yun DS, Lytton-Jean AKR, Sevimli S, Ascano M, Kelley M, Johnson DB, Balko JM, Wilson JT. Endosomolytic polymersomes increase the activity of cyclic dinucleotide STING agonists to enhance cancer immunotherapy. NATURE NANOTECHNOLOGY 2019; 14:269-278. [PMID: 30664751 PMCID: PMC6402974 DOI: 10.1038/s41565-018-0342-5] [Citation(s) in RCA: 373] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/26/2018] [Indexed: 05/17/2023]
Abstract
Cyclic dinucleotide (CDN) agonists of stimulator of interferon genes (STING) are a promising class of immunotherapeutics that activate innate immunity to increase tumour immunogenicity. However, the efficacy of CDNs is limited by drug delivery barriers, including poor cellular targeting, rapid clearance and inefficient transport to the cytosol where STING is localized. Here, we describe STING-activating nanoparticles (STING-NPs)-rationally designed polymersomes for enhanced cytosolic delivery of the endogenous CDN ligand for STING, 2'3' cyclic guanosine monophosphate-adenosine monophosphate (cGAMP). STING-NPs increase the biological potency of cGAMP, enhance STING signalling in the tumour microenvironment and sentinel lymph node, and convert immunosuppressive tumours to immunogenic, tumoricidal microenvironments. This leads to enhanced therapeutic efficacy of cGAMP, inhibition of tumour growth, increased rates of long-term survival, improved response to immune checkpoint blockade and induction of immunological memory that protects against tumour rechallenge. We validate STING-NPs in freshly isolated human melanoma tissue, highlighting their potential to improve clinical outcomes of immunotherapy.
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Affiliation(s)
- Daniel Shae
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Kyle W Becker
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Plamen Christov
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - Dong Soo Yun
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Abigail K R Lytton-Jean
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sema Sevimli
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Manuel Ascano
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mark Kelley
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Douglas B Johnson
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Justin M Balko
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Breast Cancer Research Program, Vanderbilt University Medical Center, Nashville, TN, USA
| | - John T Wilson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA.
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA.
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA.
- Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN, USA.
- Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, TN, USA.
- Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, TN, USA.
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33
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Song C, Lin T, Zhang Q, Thayumanavan S, Ren L. pH-Sensitive morphological transitions in polymeric tadpole assemblies for programmed tumor therapy. J Control Release 2019; 293:1-9. [PMID: 30391316 PMCID: PMC6338209 DOI: 10.1016/j.jconrel.2018.10.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/16/2018] [Accepted: 10/30/2018] [Indexed: 12/13/2022]
Abstract
Ultrafine single-chain tadpole polymers (SCTPs), containing an intrachain crosslinked globule and a pH-sensitive linear polymer chain, have been synthesized. Self-assembly of these polymers depends on the linear block length and the pH, at which the polymer is assembled. Although the SCTPs themselves exhibit a size that is consistent with a single-chain species, the self-assembled SCTPs were found to be substantially larger. Since the transition between these two structures is reversibly dependent on pH, we explored the possibility of utilizing these assemblies to achieve deep tissue penetration in tumors. Our results indicate that there is indeed a pH-dependent deep tissue penetration in ex vivo tumor multicellular spheroids. Moreover, the multi-tadpole assemblies (MTAs) can stably encapsulate hydrophobic molecules, which have been used to encapsulate paclitaxel (PTX). These PTX/MTAs show excellent therapeutic efficacy and biosafety in 4 T1 xenograft mouse models. The innovative multi-compartment aggregates are able to fulfill structure-related function transitions with the variation of microenvironment, which has potential to extremely enrich the design of sophisticated biological agents.
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Affiliation(s)
- Cunfeng Song
- State Key Lab of Physical Chemistry of Solid Surface, Key Laboratory of Biomedical Engineering of Fujian Province, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China
| | - Tongtong Lin
- State Key Lab of Physical Chemistry of Solid Surface, Key Laboratory of Biomedical Engineering of Fujian Province, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China
| | - Qiang Zhang
- State Key Lab of Physical Chemistry of Solid Surface, Key Laboratory of Biomedical Engineering of Fujian Province, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA.
| | - Lei Ren
- State Key Lab of Physical Chemistry of Solid Surface, Key Laboratory of Biomedical Engineering of Fujian Province, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China.
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Jiang Z, Cui W, Prasad P, Touve MA, Gianneschi NC, Mager J, Thayumanavan S. Bait-and-Switch Supramolecular Strategy To Generate Noncationic RNA-Polymer Complexes for RNA Delivery. Biomacromolecules 2018; 20:435-442. [PMID: 30525500 DOI: 10.1021/acs.biomac.8b01321] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
RNA interference (RNAi) requires the intracellular delivery of RNA molecules to initiate the neutralization of targeted mRNA molecules, inhibiting the expression or translation of the targeted gene. Current polymers and lipids that are used to deliver RNA molecules are generally required to be positively charged, to achieve complexation with RNA and the cellular internalization. However, positive surface charge has been implicated as the reason for toxicity in many of these systems. Herein, we report a novel strategy to generate noncationic RNA-polymer complexes for RNA delivery with low cytotoxicity. We use an in situ electrostatic complexation using a methylated pyridinium group, which is simultaneously removed during the RNA binding step. The resultant complexes demonstrate successful knockdown in preimplantation mammalian embryos, thus providing a new approach for nucleic acid delivery.
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Affiliation(s)
| | | | | | - Mollie A Touve
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.,Department of Chemistry and Biochemistry , University of California San Diego , La Jolla , California 92093 , United States
| | - Nathan C Gianneschi
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.,Department of Chemistry and Biochemistry , University of California San Diego , La Jolla , California 92093 , United States
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35
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Wagner AM, Spencer DS, Peppas NA. Advanced architectures in the design of responsive polymers for cancer nanomedicine. J Appl Polym Sci 2018; 135:46154. [PMID: 30174339 PMCID: PMC6114141 DOI: 10.1002/app.46154] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In recent decades, nanoparticles have shown significant promise as an oncology treatment modality. Responsive polymers represent a promising class of nanoparticles that can trigger delivery through the exploitation of a specific stimuli. Response to a stimulus is one of the most basic processes found in living systems. As such, the desire to engineer dynamic and functional materials is becoming more prevalent in an effort to achieve precise control over our environment. The combination of controlled radical polymerization and high yielding chemistry strategies provide an excellent basis for the development of the next generation of drug delivery systems. The versatility of polymer chemistries available enables the synthesis of increasingly complex architectures with enhanced delivery specificity and control over the desired properties to interface with biological systems. This tutorial review highlights recent developments in polymer-based approaches to internally responsive nanoparticles for oncology. Presented are concise overviews of the current challenges and opportunities in cancer nanomedicine, common polymer-based architectures, and the basis for internally triggered stimuli-response relationships commonly employed in oncology applications. Examples of the chemistry used in the design of environmentally labile nanomaterials are discussed, and we outline recent advances in creating advanced bioresponsive drug delivery architectures.
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Affiliation(s)
- Angela M Wagner
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712
| | - David S Spencer
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712
| | - Nicholas A Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, Texas 78712
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712
- Division of Pharmaceutics, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712
- Department of Surgery and Perioperative Surgery, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712
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36
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Iamsaard S, Seidi F, Dararatana N, Crespy D. Redox-Responsive Polymer with Self-Immolative Linkers for the Release of Payloads. Macromol Rapid Commun 2018; 39:e1800071. [PMID: 29748982 DOI: 10.1002/marc.201800071] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/02/2018] [Indexed: 01/30/2023]
Abstract
Previous couplings of corrosion inhibitors to redox-responsive polymers via covalent bonding suffer from several drawbacks. It is presented here novel redox-responsive polymer-corrosion inhibitor conjugates that contain self-immolative linkers in their side chains. Very fast redox-induced release of tryptamine, a drug and a corrosion inhibitor, is observed after applying a reductive trigger.
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Affiliation(s)
- Supitchaya Iamsaard
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Farzad Seidi
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Naruphorn Dararatana
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
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37
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Gevrek TN, Cosar M, Aydin D, Kaga E, Arslan M, Sanyal R, Sanyal A. Facile Fabrication of a Modular "Catch and Release" Hydrogel Interface: Harnessing Thiol-Disulfide Exchange for Reversible Protein Capture and Cell Attachment. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14399-14409. [PMID: 29637775 DOI: 10.1021/acsami.8b00802] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surfaces engineered to "specifically capture" and "release on demand" analytes ranging from biomolecules to cells find niche applications in areas such as diagnostics and detection. Utilization of a disulfide-based linker as a building block allows fabrication of a novel hydrogel-based platform that incorporates a "catch and release" attribute. Hydrogels incorporating pyridyl disulfide groups as thiol-reactive handles were prepared by photopolymerization in the presence of a poly(ethylene glycol) (PEG)-based cross-linker. A range of bulk and micropatterned hydrogels with varying amounts of the reactive group were prepared using PEG-based monomers with different chain lengths. Thiol-containing molecules were conjugated to these hydrogels through the thiol-disulfide exchange reaction under ambient conditions with high efficiencies, as determined by UV-vis spectroscopy. Facile conjugation of a thiol-containing fluorescent dye, namely 4,4-difluoro-1,3,5,7-tetramethyl-8-[(10-mercapto)]-4-bora-3 a,4 a-diaza- s-indacene, was demonstrated, followed by its effective cleavage in the presence of dithiothreitol (DTT), a thiol-containing disulfide-reducing agent. Conjugation of a biotin-containing ligand onto the hydrogels allowed specific binding of protein extravidin when exposed to a mixture of extravidin and bovine serum albumin. The bound protein could be released from the hydrogel by simple exposure to a DTT solution. Likewise, hydrogels modified with a cell-adhesive peptide unit containing the RGD sequence acted as favorable substrates for cellular attachment. Incubation of these cell-attached hydrogel surfaces in a DTT-containing solution leads to facile detachment of cells from the surfaces, while retaining a high level of cell viability. It can be envisioned that the benign nature of these hydrogels, their facile fabrication, and modular functionalization will make them attractive platforms for many applications.
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38
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Gordon MR, Zhao B, Anson F, Fernandez A, Singh K, Homyak C, Canakci M, Vachet RW, Thayumanavan S. Matrix Metalloproteinase-9-Responsive Nanogels for Proximal Surface Conversion and Activated Cellular Uptake. Biomacromolecules 2018; 19:860-871. [PMID: 29360342 PMCID: PMC6298948 DOI: 10.1021/acs.biomac.7b01659] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Here, we have exploited the heightened extracellular concentration of matrix metalloproteinase-9 (MMP-9) to induce surface-conversional properties of nanogels with the aim of tumor-specific enhanced cellular uptake. A modular polymeric nanogel platform was designed and synthesized for facile formulation and validation of MMP-9-mediated dePEGylation and generation of polyamine-type surface characteristics through peptide N-termini. Nanogels containing MMP-9-cleavable motifs and different poly(ethylene glycol) corona lengths (350 and 750 g/mol) were prepared, and enzymatic surface conversional properties were validated by MALDI characterization of cleaved byproducts, fluorescamine assay amine quantification, and zeta potential. The nanogel with a shorter PEG length, mPEG350-NG, exhibited superior surface conversion in response to extracellular concentrations of MMP-9 compared to that of the longer PEG length, mPEG750-NG. Confocal microscopy images of HeLa cells incubated with both fluorescein-labeled nanogels and DiI-encapsulated nanogels demonstrated greater uptake following MMP-9 "activation" for mPEG350-NG compared to its nontreated "passive" mPEG350-NG parent, demonstrating the versatility of such systems to achieve stimuli-responsive uptake in response to cancer-relevant proteases.
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Affiliation(s)
- Mallory R. Gordon
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Bo Zhao
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Francesca Anson
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Ann Fernandez
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Khushboo Singh
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Celia Homyak
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Mine Canakci
- Molecular and Cellular Biology Program, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Richard W. Vachet
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
- Molecular and Cellular Biology Program, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
- Center for Bioactive Delivery at the Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - S. Thayumanavan
- Department of Chemistry, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
- Molecular and Cellular Biology Program, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
- Center for Bioactive Delivery at the Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003
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39
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Gordon MR, Zhuang J, Ventura J, Li L, Raghupathi K, Thayumanavan S. Biodistribution Analysis of NIR-Labeled Nanogels Using in Vivo FMT Imaging in Triple Negative Human Mammary Carcinoma Models. Mol Pharm 2018; 15:1180-1191. [PMID: 29378144 DOI: 10.1021/acs.molpharmaceut.7b01011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The purpose of this study is to evaluate the biodistribution properties of random-copolymer-based core-cross-linked nanogels of various sizes and surface poly(ethylene glycol) composition. Systematic variations of near-IR labeled nanogels, comprising varying particle sizes (28-135 nm), PEG corona quantity (0-50 mol %), and PEG length (PEG Mn 1000, 2000, and 5000), were prepared and injected in mice that had been subcutaneously implanted with MDA-MB-231-luc-D3H2LN human mammary carcinoma. In vivo biodistribution was obtained using fluorescence molecular tomography imaging at 0, 6, 24, 48, and 72 h postinjection. Retention of total body probe and percentages of total injected dose in the tumor, liver, spleen, lungs, heart, intestines, and kidneys were obtained. Smaller nanogels (∼30-40 nm) with a high PEG conjugation (∼43-46 mol %) of Mn 2000 on their coronas achieved the highest tumor specificity with peak maximum 27% ID/g, a statistically significant propensity toward accumulation with 16.5% ID/g increase from 0 to 72 h of imaging, which constitutes a 1.5-fold increase. Nanogels with greater tumor localization also had greater retention of total body probe over 72 h. Nanogels without extensive PEGylation were rapidly excreted, even at similar sizes to PEGylated nanogels exhibiting whole body retention. Of all tissues, the liver had the highest % ID, however, like other tissues, it displayed a monotonic decrease over time, suggesting nanogel clearance by hepatic metabolism. Ex vivo quantification of individual tissues from gross necropsy at 72 h postinjection generally correlated with the FMT analysis, providing confidence in tissue signal segmentation in vivo. The parameters determined to most significantly direct a nanogel to the desired tumor target can lead to improve effectiveness for nanogels as therapeutic delivery vehicles.
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40
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Ke W, Yin W, Zha Z, Mukerabigwi JF, Chen W, Wang Y, He C, Ge Z. A robust strategy for preparation of sequential stimuli-responsive block copolymer prodrugs via thiolactone chemistry to overcome multiple anticancer drug delivery barriers. Biomaterials 2018; 154:261-274. [DOI: 10.1016/j.biomaterials.2017.11.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/18/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022]
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41
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Liu B, Thayumanavan S. Importance of Evaluating Dynamic Encapsulation Stability of Amphiphilic Assemblies in Serum. Biomacromolecules 2017; 18:4163-4170. [PMID: 29086559 PMCID: PMC5725245 DOI: 10.1021/acs.biomac.7b01220] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In targeted drug delivery systems, it is desirable that the delivery of hydrophobic drugs to a cell or tissue is achieved with little to no side effects. To ensure that the drugs do not leak during circulation, encapsulation stability of the drug carrier in serum is critical. In this paper, we report on a modified FRET-based method to evaluate encapsulation stability of amphiphilic assemblies and cross-linked polymer assemblies in serum. Our results show that serum components can act as reservoirs for hydrophobic molecules. We also show that serum albumin is likely to be the primary determinant of this property. This work highlights the importance of assessing encapsulation stability in terms of dynamics of guest molecules, as it provides the critical distinction between hydrophobic molecules bound inside amphiphilic assemblies and the molecules that are bound to the hydrophobic pockets of serum albumin.
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Affiliation(s)
- Bin Liu
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Center for Bioactive Delivery, Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
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42
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Wang P, Dong Y, Lu X, Wu Z, Chen H. Combining Click Sulfur(VI)-Fluoride Exchange with Photoiniferters: A Facile, Fast, and Efficient Strategy for Postpolymerization Modification. Macromol Rapid Commun 2017; 39. [DOI: 10.1002/marc.201700523] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/25/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Peixi Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Yishi Dong
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Xiaowen Lu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Zhaoqiang Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
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43
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Affiliation(s)
- Raju Bej
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road; Kolkata 700032 India
| | - Jayita Sarkar
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road; Kolkata 700032 India
| | - Suhrit Ghosh
- Polymer Science Unit, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road; Kolkata 700032 India
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44
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Fuoco T, Pappalardo D, Finne-Wistrand A. Redox-Responsive Disulfide Cross-Linked PLA–PEG Nanoparticles. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01318] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Tiziana Fuoco
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Daniela Pappalardo
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
- Department
of Science and Technology, University of Sannio, via dei Mulini
59/A, 82100 Benevento, Italy
| | - Anna Finne-Wistrand
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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45
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Ardana A, Whittaker AK, Thurecht KJ. Synthesis and post-polymerisation ligations of PEG-based hyperbranched polymers for RNA conjugation via reversible disulfide linkage. Macromol Res 2017. [DOI: 10.1007/s13233-017-5111-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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46
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Gok O, Erturk P, Sumer Bolu B, Gevrek TN, Sanyal R, Sanyal A. Dendrons and Multiarm Polymers with Thiol-Exchangeable Cores: A Reversible Conjugation Platform for Delivery. Biomacromolecules 2017. [PMID: 28648044 DOI: 10.1021/acs.biomac.7b00619] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Disulfide exchange reaction has emerged as a powerful tool for reversible conjugation of proteins, peptides and thiol containing molecules to polymeric supports. In particular, the pyridyl disulfide group provides an efficient handle for the site-specific conjugation of therapeutic peptides and proteins bearing cysteine moieties. In this study, novel biodegradable dendritic platforms containing a pyridyl disulfide unit at their focal point were designed. Presence of hydroxyl groups at the periphery of these dendrons allows their elaboration to multivalent initiators that yield poly(ethylene glycol) based multiarm star polymers via controlled radical polymerization. The pyridyl disulfide unit at the core of these star polymers undergoes efficient reaction with thiol functional group containing molecules such as a hydrophobic dye, namely, Bodipy-SH, glutathione, and KLAK sequence containing peptide. While conjugation of the hydrophobic fluorescent dye to the PEG-based multiarm polymer renders it water-soluble, it can be cleaved off the construct through thiol-disulfide exchange in the presence of an external thiol such as dithiothreitol. The multiarm polymer was conjugated with a thiol group containing apoptotic peptide to increase its solubility and cellular transport. In vitro cytotoxicity and apoptosis assays demonstrated that the resultant peptide-polymer conjugate had almost five times more apoptotic potential primarily through triggering apoptosis by disrupting mitochondrial membranes of human breast cancer cell line (MDA-MB-231) compared to naked peptide. The novel dendritic platform disclosed here offers an attractive template that can be modified to multiarm polymeric constructs bearing a "tag and release" characteristic.
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Affiliation(s)
- Ozgul Gok
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey
| | - Pelin Erturk
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey
| | - Burcu Sumer Bolu
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey
| | - Tugce Nihal Gevrek
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey.,Center for Life Sciences and Technologies, Bogazici University , Istanbul, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University , Bebek 34342, Istanbul, Turkey.,Center for Life Sciences and Technologies, Bogazici University , Istanbul, Turkey
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47
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Blasco E, Sims MB, Goldmann AS, Sumerlin BS, Barner-Kowollik C. 50th Anniversary Perspective: Polymer Functionalization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00465] [Citation(s) in RCA: 248] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Eva Blasco
- Macromolecular Architectures, Institut für Technische Chemie
und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr.
18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Michael B. Sims
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Anja S. Goldmann
- School of Chemistry,
Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George St., Brisbane, QLD 4000, Australia
- Macromolecular Architectures, Institut für Technische Chemie
und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr.
18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Brent S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Christopher Barner-Kowollik
- School of Chemistry,
Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George St., Brisbane, QLD 4000, Australia
- Macromolecular Architectures, Institut für Technische Chemie
und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr.
18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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48
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Mane SR, Sathyan A, Shunmugam R. Synthesis of Norbornene Derived Helical Copolymer by Simple Molecular Marriage Approach to Produce Smart Nanocarrier. Sci Rep 2017; 7:44857. [PMID: 28327656 PMCID: PMC5361182 DOI: 10.1038/srep44857] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 02/14/2017] [Indexed: 12/28/2022] Open
Abstract
A novel library of norbornene derived helical copolymer has been synthesized through the coupling of two homopolymers via Molecular Marriage Approach. The helicity is governed by the non-covalent interactions like hydrogen bonding, π-π stacking and the influence of hydrophobic and hydrophilic motifs. The detailed characterization of the copolymer (Copoly 1) has been provided and the super structures are confirmed through dynamic light scattering (DLS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The observed size of the aggregates was about 200 nm. The density functional theory (DFT) is favorably supported for the formation of proposed structure of Copoly 1. Circular dichroism (CD) measurement has confirmed the one handed helical structure of the copolymer. Reservoir capability of this pH responsive polymer (Copoly 1) to encapsulate anti-cancer drug doxorubicin (DOX) warrants its potential applications in the field of bio-medical sciences.
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Affiliation(s)
- Shivshankar R. Mane
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur 741246, Kolkata, India
| | - Ashlin Sathyan
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur 741246, Kolkata, India
| | - Raja Shunmugam
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur 741246, Kolkata, India
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49
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Abstract
The formulation in which therapeutic proteins are administered plays a key role in retaining their biological activity. Enzyme wrapping, using synthetic polymers, is a strategy employed to provide enzymes with lower immunogenicity, longer circulation times, and better targeting capabilities. Protein-polymer complexation methods, involving covalent, noncovalent, and electrostatic interactions, that can provide means to develop formulations for retaining enzyme stability are discussed in this chapter. Amphiphilic self-cross-linkable polymer was used to encapsulate capsase-3 enzyme in the nanogel, while inverse emulsion polymerization method was used to entrap α-glucosidase enzyme in the nanogel. These nanogels were characterized by dynamic light scattering, transmission electron microscopy, and gel electrophoresis. Upon release of caspase-3 enzyme from polymeric nanogel, it retained nearly 86% of its original activity. Similarly, α-glucosidase that was encased in the acid cleavable polymeric nanogel exhibited substantial activity after release under acidic conditions (pH 5, 48h). Nano-armoring of the enzymes were nearly complete and provided high yields of the encased enzyme.
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50
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Palacio H, Otálvaro F, Giraldo LF, Ponchel G, Segura-Sánchez F. Chitosan-Acrylic Polymeric Nanoparticles with Dynamic Covalent Bonds. Synthesis and Stimuli Behavior. Chem Pharm Bull (Tokyo) 2017; 65:1132-1143. [DOI: 10.1248/cpb.c17-00624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Herman Palacio
- Grupo de Investigación BIOPOLIMER, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia
| | - Felipe Otálvaro
- Grupo de Investigación Síntesis y Biosíntesis de Metabolitos Naturales, Instituto de Química, Universidad de Antioquia
| | - Luis Fernando Giraldo
- Laboratorio de Investigación en Polímeros, Instituto de Química, Universidad de Antioquia
| | | | - Freimar Segura-Sánchez
- Grupo de Investigación BIOPOLIMER, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia
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