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Yang X, Lv S, Li T, Hao S, Zhu H, Cheng Y, Li S, Song H. Dual Thermo-Responsive and Strain-Responsive Ionogels for Smart Windows and Temperature/Motion Monitoring. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20083-20092. [PMID: 35468277 DOI: 10.1021/acsami.2c03142] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work, a stretchable, dual thermo-responsive and strain-responsive ionogel has been synthesized by one-step photopolymerization. The obtained ionogel shows an ultrahigh stretchability (∼3000%), a high ionic conductivity (up to 3.1 mS/cm), and a good temperature tolerance (-40 to 300 °C). Importantly, these ionogels show an upper critical solution temperature-type phase transition with a wide tunable phase-transition temperature (17.5-42.5 °C) and reversible color/transparency switching. In particular, the as-prepared ionogel-based flexible/wearable temperature monitors and smart windows show an excellent designability and programmability, temperature modulation ability, and thermal responsiveness. Moreover, the ionogels-based strain sensors have temperature- and strain-dual responsibility and a broad strain-sensing range (1-700%), which can effectively monitor various motions. This strategy of fabricating dual thermo- and strain-responsive ionogels by using a one-step method and only one polymer holds great promise for the next generation of multifunctional stimuli-responsive materials.
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Affiliation(s)
- Xuemeng Yang
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shufang Lv
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Tianci Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuai Hao
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongnan Zhu
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Yan Cheng
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuaijie Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongzan Song
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
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Liu H, Prachyathipsakul T, Koyasseril-Yehiya TM, Le SP, Thayumanavan S. Molecular bases for temperature sensitivity in supramolecular assemblies and their applications as thermoresponsive soft materials. MATERIALS HORIZONS 2022; 9:164-193. [PMID: 34549764 PMCID: PMC8757657 DOI: 10.1039/d1mh01091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Thermoresponsive supramolecular assemblies have been extensively explored in diverse formats, from injectable hydrogels to nanoscale carriers, for a variety of applications including drug delivery, tissue engineering and thermo-controlled catalysis. Understanding the molecular bases behind thermal sensitivity of materials is fundamentally important for the rational design of assemblies with optimal combination of properties and predictable tunability for specific applications. In this review, we summarize the recent advances in this area with a specific focus on the parameters and factors that influence thermoresponsive properties of soft materials. We summarize and analyze the effects of structures and architectures of molecules, hydrophilic and lipophilic balance, concentration, components and external additives upon the thermoresponsiveness of the corresponding molecular assemblies.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | | | | | - Stephanie P Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Centre for Bioactive Delivery, Institute for Applied Life Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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Chong JR, Le DL, Sato H, Sou K. Nanocapsule pH Regulator: Sustained Continuous Alkali Release from Thermosensitive Liposomes Reduces Acid Erosion. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21463-21469. [PMID: 32295336 DOI: 10.1021/acsami.0c03814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thermosensitive liposomes are major drug delivery carriers, which enable targeting of drugs and burst release of the drugs from the liposomes at the site of action by applying a local heat stimulation above body temperature. Although the burst release is significant for a one-shot high-rate release of drugs at the target site, this type of release has a limited sustained action of the drugs. In this study, we report the alkali-encapsulating thermosensitive liposomes enabling environment pH regulation by sustained continuous cargo release at human body temperature. The liposomes encapsulating alkalis successfully neutralized the environmental acids for hours by releasing the alkalis and prevented acid erosion of hydroxyapatite matrix. Taken together, the present liposomes are effective for the sustained release of cargo at body temperature, specifically the alkali-encapsulating liposomes can be a preventing agent for dental caries in the oral cavity. The sustained release under endogenous body heat characteristics of thermosensitive liposomes showcased in this study can also be extended for prolonged intravenous drug exposure from targeted liposomal drug nanotherapeutics in the near future.
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Affiliation(s)
- Jian Rong Chong
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Duc Long Le
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Hirotaka Sato
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Keitaro Sou
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
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Highly cooperative fluorescence switching of self-assembled squaraine dye at tunable threshold temperatures using thermosensitive nanovesicles for optical sensing and imaging. Sci Rep 2019; 9:17991. [PMID: 31784685 PMCID: PMC6884458 DOI: 10.1038/s41598-019-54418-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 11/15/2019] [Indexed: 12/11/2022] Open
Abstract
Thermosensitive fluorescent dyes can convert thermal signals into optical signals as a molecular nanoprobe. These nanoprobes are playing an increasingly important part in optical temperature sensing and imaging at the nano- and microscale. However, the ability of a fluorescent dye itself has sensitivity and accuracy limitations. Here we present a molecular strategy based on self-assembly to overcome such limitations. We found that thermosensitive nanovesicles composed of lipids and a unique fluorescent dye exhibit fluorescence switching characteristics at a threshold temperature. The switch is rapid and reversible and has a high signal to background ratio (>60), and is also highly sensitive to temperature (10–22%/°C) around the threshold value. Furthermore, the threshold temperature at which fluorescence switching is induced, can be tuned according to the phase transition temperature of the lipid bilayer membrane forming the nanovesicles. Spectroscopic analysis indicated that the fluorescence switching is induced by the aggregation-caused quenching and disaggregation-induced emission of the fluorescent dye in a cooperative response to the thermotropic phase transition of the membrane. This mechanism presents a useful approach for chemical and material design to develop fluorescent nanomaterials with superior fluorescence sensitivity to thermal signals for optical temperature sensing and imaging at the nano- and microscales.
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Wijetunge SS, Wen J, Yeh CK, Sun Y. Wheat germ agglutinin liposomes with surface grafted cyclodextrins as bioadhesive dual-drug delivery nanocarriers to treat oral cells. Colloids Surf B Biointerfaces 2019; 185:110572. [PMID: 31654890 DOI: 10.1016/j.colsurfb.2019.110572] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/12/2019] [Accepted: 10/08/2019] [Indexed: 10/25/2022]
Abstract
Topical management of oral infection requires combined use of multiple classes of drugs and frequent dosing due to low drug retention rates. The sustained, co-delivery of drugs with different solubilities to cells using nanoparticle drug delivery systems remains a challenge. Here, we developed wheat germ agglutinin (WGA) conjugated liposomes with surface grafted cyclodextrin (WGA-liposome-CD) as bioadhesive dual-drug nanocarriers. We effectively encapsulated two physiochemically different drugs (ciprofloxacin and betamethasone) and demonstrated sustained co-drug release in saliva over a 24 h period in vitro. As proof of therapeutic utility in oral cells, we infected oral keratinocytes with Aggregatibacter actinomycetemcomitans, a bacterial pathogen responsible for chronic periodontal disease. Drug release, resulting from nanocarrier cell binding, produced a significant increase in oral cell survival and synergistically reduced inflammation. These results suggest that WGA-liposome-CD nanocarriers are novel cyto-adhesive candidates for delivering multiple drugs with sustained therapeutic activity for localized drug delivery to oral cells.
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Affiliation(s)
- Sashini S Wijetunge
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, United States
| | - Jianchuan Wen
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, United States
| | - Chih-Ko Yeh
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio and Geriatric Research Education and Clinical Center, Audie L. Murphy Division, South Texas Veterans Health Care System, 7400 Merton Minter Boulevard, San Antonio, TX 78229, United States
| | - Yuyu Sun
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, United States.
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Sou K, Le DL, Sato H. Nanocapsules for Programmed Neurotransmitter Release: Toward Artificial Extracellular Synaptic Vesicles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900132. [PMID: 30887709 DOI: 10.1002/smll.201900132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/20/2019] [Indexed: 06/09/2023]
Abstract
Nanocapsules present a promising platform for delivering chemicals and biomolecules to a site of action in a living organism. Because the biological action of the encapsulated molecules is blocked until they are released from the nanocapsules, the encapsulation structure enables triggering of the topical and timely action of the molecules at the target site. A similar mechanism seems promising for the spatiotemporal control of signal transduction triggered by the release of signal molecules in neuronal, metabolic, and immune systems. From this perspective, nanocapsules can be regarded as practical tools to apply signal molecules such as neurotransmitters to intervene in signal transduction. However, spatiotemporal control of the payload release from nanocapsules persists as a key technical issue. Stimulus-responsive nanocapsules that release payloads in response to external input of physical stimuli are promising platforms to enable programmed payload release. These programmable nanocapsules encapsulating neurotransmitters are expected to lead to new insights and perspectives related to artificial extracellular synaptic vesicles that might provide an experimental and therapeutic strategy for neuromodulation and nervous system disorders.
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Affiliation(s)
- Keitaro Sou
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo, 169-8555, Japan
| | - Duc Long Le
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Hirotaka Sato
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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Le DL, Tnee CK, Vo Doan TT, Arai S, Suzuki M, Sou K, Sato H. Neurotransmitter-Loaded Nanocapsule Triggers On-Demand Muscle Relaxation in Living Organism. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37812-37819. [PMID: 30372017 DOI: 10.1021/acsami.8b11079] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This paper reports the on-demand artificial muscle relaxation using a thermosensitive liposome encapsulating γ-aminobutyric acid (GABA) inhibitory neurotransmitter. Muscle relaxation is not feasible in principle, although muscle contraction can be easily induced by electrical stimulation. Herein, thermosensitive liposomes (phase transition temperature = 40 °C) were synthesized to encapsulate GABA and were injected into a leg of a living beetle. The leg was wrapped around by a Ni-Cr wire heater integrated with a thermocouple to enable the feedback control and to manipulate the leg temperature. The injected leg was temporarily immobilized by heating it up to 45 °C. The leg did not swing even by electrically stimulating the leg muscle. Subsequently, the leg recovered to swing. The result indicates that GABA was released from liposomes and fed to the leg muscle, enabling temporal muscle relaxation.
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Affiliation(s)
- Duc Long Le
- School of Mechanical & Aerospace Engineering , Nanyang Technological University 50 Nanyang Avenue , 639798 , Singapore
| | - Chin Kiat Tnee
- School of Mechanical & Aerospace Engineering , Nanyang Technological University 50 Nanyang Avenue , 639798 , Singapore
| | - T Thang Vo Doan
- School of Mechanical & Aerospace Engineering , Nanyang Technological University 50 Nanyang Avenue , 639798 , Singapore
| | - Satoshi Arai
- Research Institute for Science and Engineering , Waseda University , 3-4-1 Ohkubo , Shinjuku, Tokyo 169-8555 , Japan
- PRIME, Japan Agency for Medical Research and Development , Tokyo 100-0004 , Japan
| | - Madoka Suzuki
- Research Institute for Science and Engineering , Waseda University , 3-4-1 Ohkubo , Shinjuku, Tokyo 169-8555 , Japan
- PRESTO, Japan Science and Technology Agency , 4-1-8 Honcho , Kawaguchi, Saitama 332-0012 , Japan
- Institute for Protein Research , Osaka University , 3-2 Yamadaoka , Suita, Osaka 565-0871 , Japan
| | - Keitaro Sou
- Waseda Bioscience Research Institute in Singapore (WABIOS) , 11 Biopolis Way , 138667 , Singapore
- Organization for University Research Initiatives , Waseda University , 513 Waseda Tsurumaki-cho , Shinjuku, Tokyo 162-0041 , Japan
| | - Hirotaka Sato
- School of Mechanical & Aerospace Engineering , Nanyang Technological University 50 Nanyang Avenue , 639798 , Singapore
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