1
|
Hadi Z, Ahmadi E, Shams-Esfandabadi N, Davoodian N, Shirazi A, Moradian M. Polyvinyl alcohol addition to freezing extender can improve the post-thaw quality, longevity and in vitro fertility of ram epididymal spermatozoa. Cryobiology 2024; 114:104853. [PMID: 38301951 DOI: 10.1016/j.cryobiol.2024.104853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/18/2023] [Accepted: 01/24/2024] [Indexed: 02/03/2024]
Abstract
Recovering and cryopreserving epididymal spermatozoa are suitable methods for preserving the genetic potential of livestock and endangered species. Regarding encouraging reports on the use of polyvinyl alcohol (PVA) in cryopreserving various cell types, we conducted this study to examine the impact of PVA on the post-thaw quality, longevity, and in vitro fertility of ram epididymal sperm. In the first experiment, ram epididymal spermatozoa were frozen in extenders containing 6 % glycerol and 0, 0.5, 1, 2, 5, 10, or 15 mg/ml of PVA. Polyvinyl alcohol at concentrations of 0.5, 1, and 2 mg/ml improved the motility and functional membrane integrity (FMI) of the sperm compared with the control group (P < 0.05). In the second experiment, we investigated whether PVA could partially substitute glycerol in the freezing extender. PVA was added at 0, 0.5, 1, and 2 mg/ml to the extenders containing 1 % or 2 % glycerol. After thawing, the sperm motility parameters of the group containing 1 mg/ml PVA and 2 % glycerol were significantly higher than those of the un-supplemented groups (P < 0.05). In the third experiment, the effect of PVA on the post-thaw sperm longevity were examined. Sperm were frozen in 3 extenders: one containing 6 % glycerol and 1 mg/ml PVA (Gly6P1), another containing 2 % glycerol and 1 mg/ml PVA (Gly2P1), and a control extender with 6 % glycerol. After thawing, the quality of the sperm was evaluated. Sperm were then diluted in human tubal fluid (HTF) and incubated at 37 °C for 3 h. Afterwards, the quality of the sperm was evaluated once more. The presence of PVA in the freezing extender improved motility parameters and FMI. Additionally, PVA-containing groups had lower proportions of capacitated and acrosome reacted sperm compared with the control group (P < 0.05). The Gly6P1 group performed better than the other two groups (P < 0.05). In the fourth experiment, sperm from the Gly6P1 and Control groups were used in the IVF process immediately after thawing (T0) and after a 3-h incubation at 37 °C in HTF (T3). Cleavage, blastocyst and hatching rates in both groups were similar at T0, but they were lower in the Control group at T3 (P < 0.05). In conclusion, PVA as an additive to the freezing extender significantly improves post-thaw motility, viability, acrosome integrity, longevity, and fertile lifespan of ram epididymal spermatozoa.
Collapse
Affiliation(s)
- Zeinab Hadi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran; Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Ebrahim Ahmadi
- Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran.
| | - Naser Shams-Esfandabadi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran; Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Najmeh Davoodian
- Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Abolfazl Shirazi
- Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran; Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Midya Moradian
- Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| |
Collapse
|
2
|
Diao Y, Hao T, Liu X, Yang H. Advances in single ice crystal shaping materials: From nature to synthesis and applications in cryopreservation. Acta Biomater 2024; 174:49-68. [PMID: 38040076 DOI: 10.1016/j.actbio.2023.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/23/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
Antifreeze (glyco) proteins [AF(G)Ps], which are widely present in various extreme microorganisms, can control the formation and growth of ice crystals. Given the significance of cryogenic technology in biomedicine, climate science, electronic energy, and other fields of research, scientists are quite interested in the development and synthesis high-efficiency bionic antifreeze protein materials, particularly to reproduce their dynamic ice shaping (DIS) characteristics. Single ice crystal shaping materials, a promising class of ice-controlling materials, can alter the morphology and growth rate of ice crystals at low temperatures. This review aims to highlight the development of single ice crystal shaping materials and provide a brief comparison between a series of natural and bionic synthetic materials with DIS ability, which include AF(G)Ps, polymers, salts, and nanomaterials. Additionally, we summarize their applications in cryopreservation. Finally, this paper presents the current challenges and prospects encountered in developing high-efficiency and practical single ice crystal shaping materials. STATEMENT OF SIGNIFICANCE: The formation and growth of ice crystals hold a significant importance to an incredibly broad range of fields. Therefore, the design and fabrication of the single ice crystal shaping materials have gained the increasing popularity due to its key role in dynamic ice shaping (DIS) characteristics. Especially, single ice crystal shaping materials are considered one of the most promising candidates as ice inhibitors, presenting tremendous prospects for enhancing cryopreservation. In this work, we focus on the molecular characteristics, structure-function relationships, and DIS mechanisms of typical natural and biomimetic synthetic materials. This review may provide inspiration for the design and preparation of single ice crystal shaping materials and give guidance for the development of effective cryopreservation agent.
Collapse
Affiliation(s)
- Yunhe Diao
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Tongtong Hao
- School of Materials Science and Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Xuying Liu
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Huige Yang
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China..
| |
Collapse
|
3
|
Fu Y, Li Y, Everett DW, Weng S, Zhai Y, Wang M, Li T. Octenyl succinic anhydride-modified amyloid protein fibrils demonstrate enhanced ice recrystallization inhibition activity and dispersibility. Int J Biol Macromol 2023; 252:126439. [PMID: 37611688 DOI: 10.1016/j.ijbiomac.2023.126439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/13/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023]
Abstract
Octenyl succinic anhydride (OSA) modification of amyloid proteins fibrils (APFs) was employed to improve dispersibility and ice recrystallization inhibition activity. OSA mainly reacted with the amino groups of APFs without significantly changing morphology. OSA-modified APFs (OAPFs) had lower pI, carried more negative charges, and were more hydrophobic. OSA-modification showed a pH-dependent effect on the dispersibility of fibrils. At pH 7.0, OSA-modification improved dispersibility and inhibited heat-induced gelation of fibrils at weakened electrostatic repulsion. OAPFs were more prone to aggregation with lower dispersity at acidic pH values and demonstrated stronger IRI activity than unmodified fibrils at pH 7.0. Our findings indicate OSA-modification favors the industrial application of APFs as an ice recrystallization inhibitor with enhanced dispersibility.
Collapse
Affiliation(s)
- Yuying Fu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuan Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - David W Everett
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China; AgResearch, Palmerston North, New Zealand; Riddet Institute, Palmerston North, New Zealand
| | - Shuni Weng
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yun Zhai
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Mengtin Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Teng Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China.
| |
Collapse
|
4
|
Burkey AA, Ghousifam N, Hillsley AV, Brotherton ZW, Rezaeeyazdi M, Hatridge TA, Harris DT, Sprague WW, Sandoval BE, Rosales AM, Rylander MN, Lynd NA. Synthesis of Poly(allyl glycidyl ether)-Derived Polyampholytes and Their Application to the Cryopreservation of Living Cells. Biomacromolecules 2023; 24:1475-1482. [PMID: 36780271 DOI: 10.1021/acs.biomac.2c01488] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Through the postpolymerization modification of poly(allyl glycidyl ether) (PAGE), a functionalizable polyether with a poly(ethylene oxide) backbone, we engineered a new class of highly tunable polyampholyte materials. These polyampholytes can be synthesized to have several useful properties, including low cytotoxicity and pH-responsive coacervate formation. In this study, we used PAGE-based polyampholytes (PAGE-PAs) for the cryopreservation of mammalian cell suspensions. Typically, dimethyl sulfoxide (DMSO) is the cryoprotectant used for preserving mammalian cells, but DMSO suffers from key drawbacks including toxicity and difficult post-thaw removal that motivates the development of new materials and methods. Toxicity and post-thaw survival were dependent on PAGE-PA composition with the highest immediate post-thaw survival for normal human dermal fibroblasts occurring for the least toxic PAGE-PA at a cation/anion ratio of 35:65. With low toxicity, the PAGE-PA concentration could be increased in order to increase immediate post-thaw survival of the immortalized mouse embryonic fibroblasts (NIH/3T3). While immediate post-thaw viability was achieved using only the PAGE-PAs, long-term cell survival was low, highlighting the challenges involved with the design of cryoprotective polyampholytes. An environment utilizing both PAGE-PAs and DMSO in a cryoprotective solution offered promising post-thaw viabilities exceeding 70%, with long-term metabolic activities comparable to unfrozen cells.
Collapse
Affiliation(s)
- Aaron A Burkey
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Neda Ghousifam
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Alexander V Hillsley
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zachary W Brotherton
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Mahboobeh Rezaeeyazdi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Taylor A Hatridge
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Dale T Harris
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - William W Sprague
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Brittany E Sandoval
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Adrianne M Rosales
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Center for Dynamics and Control of Materials, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Marissa Nichole Rylander
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Nathaniel A Lynd
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Center for Dynamics and Control of Materials, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
5
|
Lin M, Cao H, Li J. Control strategies of ice nucleation, growth, and recrystallization for cryopreservation. Acta Biomater 2023; 155:35-56. [PMID: 36323355 DOI: 10.1016/j.actbio.2022.10.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 02/02/2023]
Abstract
The cryopreservation of biomaterials is fundamental to modern biotechnology and biomedicine, but the biggest challenge is the formation of ice, resulting in fatal cryoinjury to biomaterials. To date, abundant ice control strategies have been utilized to inhibit ice formation and thus improve cryopreservation efficiency. This review focuses on the mechanisms of existing control strategies regulating ice formation and the corresponding applications to biomaterial cryopreservation, which are of guiding significance for the development of ice control strategies. Herein, basics related to biomaterial cryopreservation are introduced first. Then, the theoretical bases of ice nucleation, growth, and recrystallization are presented, from which the key factors affecting each process are analyzed, respectively. Ice nucleation is mainly affected by melting temperature, interfacial tension, shape factor, and kinetic prefactor, and ice growth is mainly affected by solution viscosity and cooling/warming rate, while ice recrystallization is inhibited by adsorption or diffusion mechanisms. Furthermore, the corresponding research methods and specific control strategies for each process are summarized. The review ends with an outlook of the current challenges and future perspectives in cryopreservation. STATEMENT OF SIGNIFICANCE: Ice formation is the major limitation of cryopreservation, which causes fatal cryoinjury to cryopreserved biomaterials. This review focuses on the three processes related to ice formation, called nucleation, growth, and recrystallization. The theoretical models, key influencing factors, research methods and corresponding ice control strategies of each process are summarized and discussed, respectively. The systematic introduction on mechanisms and control strategies of ice formation is instructive for the cryopreservation development.
Collapse
Affiliation(s)
- Min Lin
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China
| | - Haishan Cao
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China.
| | - Junming Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China
| |
Collapse
|
6
|
Wu X, Qiu Y, Chen C, Gao Y, Wang Y, Yao F, Zhang H, Li J. Polysaccharide-Derived Ice Recrystallization Inhibitors with a Modular Design: The Case of Dextran-Based Graft Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14097-14108. [PMID: 36342971 DOI: 10.1021/acs.langmuir.2c02032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Ice recrystallization inhibitors inspired from antifreeze proteins (AFPs) are receiving increasing interest for cryobiology and other extreme environment applications. Here, we present a modular strategy to develop polysaccharide-derived biomimetics, and detailed studies were performed in the case of dextran. Poly(vinyl alcohol) (PVA) which has been termed as one of the most potent biomimetics of AFPs was grafted onto dextran via thiol-ene click chemistry (Dex-g-PVA). This demonstrated that Dex-g-PVA is effective in IRI and its activity increases with the degree of polymerization (DP) (sizes of ice crystals were 18.846 ± 1.759 and 9.700 ± 1.920 μm with DPs of 30 and 80, respectively) and fraction of PVA. By means of the dynamic ice shaping (DIS) assay, Dex-g-PVA is found to engage on the ice crystal surfaces, thus the ice affinity accounts for their IRI activity. In addition, Dex- g-PVA displayed enhanced IRI activity compared to that of equivalent PVA alone. We speculate that the hydrophilic nature of dextran would derive PVA in a stretch conformation that favors ice binding. The modular design can not only offer polysaccharides IRI activity but also favor the ice-binding behavior of PVA.
Collapse
|
7
|
Chen Y, Xiao W, Jia G, Sun A. Initial ice growth control mechanism for CMC-Na in model systems. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
8
|
Cao Y, Chang T, Fang C, Zhang Y, Liu H, Zhao G. Inhibition Effect of Ti 3C 2T x MXene on Ice Crystals Combined with Laser-Mediated Heating Facilitates High-Performance Cryopreservation. ACS NANO 2022; 16:8837-8850. [PMID: 35696325 DOI: 10.1021/acsnano.1c10221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The phenomena of ice formation and growth are of great importance for climate science, regenerative medicine, cryobiology, and food science. Hence, how to control ice formation and growth remains a challenge in these fields and attracts great interest from widespread researchers. Herein, the ice regulation ability of the two-dimensional MXene Ti3C2Tx in both the cooling and thawing processes is explored. Molecularly speaking, the ice growth inhibition mechanism of Ti3C2Tx MXene is ascribed to the formation of hydrogen bonds between functional groups of -O-, -OH, and -F distributed on the surface of Ti3C2Tx and ice/water molecules, which was elucidated by the molecular dynamics simulation method. In the cooling process, Ti3C2Tx can decrease the supercooling degree and inhibit the sharp edge morphology of ice crystals. Moreover, taking advantage of the outstanding photothermal conversion property of Ti3C2Tx, rapid ice melting can be achieved, thus reducing the phenomena of devitrification and ice recrystallization. Based on the ice restriction performance of Ti3C2Tx mentioned above, Ti3C2Tx is applied for cryopreservation of stem-cell-laden hydrogel constructs. The results show that Ti3C2Tx can reduce cryodamage to stem cells induced by ice injury in both the cooling and thawing processes and finally increase the cell viability from 38.4% to 80.9%. In addition, Ti3C2Tx also shows synergetic antibacterial activity under laser irradiation, thus realizing sterile cryopreservation of stem cells. Overall, this work explores the ice inhibition performance of Ti3C2Tx, elucidates the physical mechanism, and further achieves application of Ti3C2Tx in the field of cell cryopreservation.
Collapse
Affiliation(s)
- Yuan Cao
- Department of Blood Transfusion, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Tie Chang
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China
| | - Chao Fang
- Department of Blood Transfusion, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Yuanyuan Zhang
- Department of Blood Transfusion, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Huilan Liu
- Department of Blood Transfusion, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Gang Zhao
- Department of Blood Transfusion, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China
| |
Collapse
|
9
|
Delesky EA, Srubar WV. Ice-binding proteins and bioinspired synthetic mimics in non-physiological environments. iScience 2022; 25:104286. [PMID: 35573196 PMCID: PMC9097698 DOI: 10.1016/j.isci.2022.104286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Elizabeth A. Delesky
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Wil V. Srubar
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA
- Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, ECOT 441 UCB 428, Boulder, CO 80309, USA
- Corresponding author
| |
Collapse
|
10
|
Jia G, Chen Y, Sun A, Orlien V. Control of ice crystal nucleation and growth during the food freezing process. Compr Rev Food Sci Food Saf 2022; 21:2433-2454. [DOI: 10.1111/1541-4337.12950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 03/01/2022] [Accepted: 03/05/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Guoliang Jia
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - Yimeng Chen
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - AiDong Sun
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - Vibeke Orlien
- Department of Food Science Faculty of Science University of Copenhagen Frederiksberg C Denmark
| |
Collapse
|
11
|
Rajan R, Kumar N, Matsumura K. Design of an Ice Recrystallization-Inhibiting Polyampholyte-Containing Graft Polymer for Inhibition of Protein Aggregation. Biomacromolecules 2021; 23:487-496. [PMID: 34784478 DOI: 10.1021/acs.biomac.1c01126] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Freezing-induced damage to proteins, through osmotic stress and ice recrystallization, during protein processing and long-term storage is a serious concern and may lead to loss of protein activity owing to denaturation. In this study, graft copolymers composed of a cryoprotective polymer (capable of preventing osmotic stress) and poly(vinyl alcohol) (PVA; known for its high ice recrystallization inhibition (IRI) property) were developed. The polymers had high IRI activity, albeit slightly lower than that of PVA alone, but substantially higher than that of succinylated ε-poly-l-lysine (PLLSA) alone. The graft polymers showed an efficiency higher than that of PVA or PLLSA alone in protecting proteins from multiple freeze-thaw cycles, as well as during prolonged freezing, indicating a synergy between PVA and PLLSA. The PLLSA-based graft polymer is a promising material for use in protein biopharmaceutics for the long-term storage of proteins under freezing conditions.
Collapse
Affiliation(s)
- Robin Rajan
- Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Nishant Kumar
- Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Kazuaki Matsumura
- Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| |
Collapse
|
12
|
Chang T, Zhao G. Ice Inhibition for Cryopreservation: Materials, Strategies, and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002425. [PMID: 33747720 PMCID: PMC7967093 DOI: 10.1002/advs.202002425] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 10/15/2020] [Indexed: 05/14/2023]
Abstract
Cryopreservation technology has developed into a fundamental and important supporting method for biomedical applications such as cell-based therapeutics, tissue engineering, assisted reproduction, and vaccine storage. The formation, growth, and recrystallization of ice crystals are the major limitations in cell/tissue/organ cryopreservation, and cause fatal cryoinjury to cryopreserved biological samples. Flourishing anti-icing materials and strategies can effectively regulate and suppress ice crystals, thus reducing ice damage and promoting cryopreservation efficiency. This review first describes the basic ice cryodamage mechanisms in the cryopreservation process. The recent development of chemical ice-inhibition molecules, including cryoprotectant, antifreeze protein, synthetic polymer, nanomaterial, and hydrogel, and their applications in cryopreservation are summarized. The advanced engineering strategies, including trehalose delivery, cell encapsulation, and bioinspired structure design for ice inhibition, are further discussed. Furthermore, external physical field technologies used for inhibiting ice crystals in both the cooling and thawing processes are systematically reviewed. Finally, the current challenges and future perspectives in the field of ice inhibition for high-efficiency cryopreservation are proposed.
Collapse
Affiliation(s)
- Tie Chang
- Department of Electronic Science and TechnologyUniversity of Science and Technology of ChinaHefeiAnhui230027China
| | - Gang Zhao
- Department of Electronic Science and TechnologyUniversity of Science and Technology of ChinaHefeiAnhui230027China
| |
Collapse
|
13
|
Kudaibergenov SE. Synthetic and natural polyampholytes: Structural and behavioral similarity. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sarkyt E. Kudaibergenov
- Institute of Polymer Materials and Technology Atyrau Kazakhstan
- Laboratory of Engineering Profile Satbayev University Almaty Kazakhstan
| |
Collapse
|
14
|
Zheng X, Liu J, Liu Z, Wang J. Bio-inspired Ice-controlling Materials for Cryopreservation of Cells and Tissues. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21020043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
15
|
Mertens C, Aksakal R, Badi N, Du Prez FE. Sequence-defined oligoampholytes using hydrolytically stable vinyl sulfonamides: design and UCST behaviour. Polym Chem 2021. [DOI: 10.1039/d1py00662b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Water soluble sequence-defined oligoampholytes with precisely positioned charges were synthesised via an iterative solid-phase synthesis protocol using vinyl sulfonamide and acrylate building blocks.
Collapse
Affiliation(s)
- Chiel Mertens
- Polymer Chemistry Research group
- Centre of Macromolecular Chemistry (CMaC)
- Department of organic and Macromolecular Chemistry
- Faculty of Sciences
- Ghent University
| | - Resat Aksakal
- Polymer Chemistry Research group
- Centre of Macromolecular Chemistry (CMaC)
- Department of organic and Macromolecular Chemistry
- Faculty of Sciences
- Ghent University
| | - Nezha Badi
- Polymer Chemistry Research group
- Centre of Macromolecular Chemistry (CMaC)
- Department of organic and Macromolecular Chemistry
- Faculty of Sciences
- Ghent University
| | - Filip E. Du Prez
- Polymer Chemistry Research group
- Centre of Macromolecular Chemistry (CMaC)
- Department of organic and Macromolecular Chemistry
- Faculty of Sciences
- Ghent University
| |
Collapse
|
16
|
Ampaw AA, Sibthorpe A, Ben RN. Use of Ice Recrystallization Inhibition Assays to Screen for Compounds That Inhibit Ice Recrystallization. Methods Mol Biol 2021; 2180:271-283. [PMID: 32797415 DOI: 10.1007/978-1-0716-0783-1_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ice recrystallization inhibition assays are used to screen for compounds that possess the ability to inhibit ice recrystallization. The most common of these assays are the splat cooling assay (SCA) and sucrose sandwich assay (SSA). These two assays possess similarities; however, they vary in their sample size, cooling rate, and the solution used to dissolve the analyte. In this chapter, both assay methods are described in detail, and we perform a direct comparison of the assays by evaluating the IRI activity of an antifreeze protein (AFP I). IRI activity is quantified by using ImageJ software to analyze ice crystals, and a quantitative value describing the efficiency of the inhibitor is generated. This analysis emphasizes the importance of choosing the right assay to measure IRI activity.
Collapse
Affiliation(s)
- Anna A Ampaw
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada
| | - August Sibthorpe
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Robert N Ben
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada.
| |
Collapse
|
17
|
Effect of pH on the activity of ice-binding protein from Marinomonas primoryensis. Extremophiles 2020; 25:1-13. [PMID: 33090301 DOI: 10.1007/s00792-020-01206-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/29/2020] [Indexed: 10/23/2022]
Abstract
The ability of an ice-binding protein (IBP) from Marinomonas primoryensis (MpIBP) to influence ice crystal growth and structure in nonphysiological pH environments was investigated in this work. The ability for MpIBP to retain ice interactivity under stressed environmental conditions was determined via (1) a modified splat assay to determine ice recrystallization inhibition (IRI) of polycrystalline ice and (2) nanoliter osmometry to evaluate the ability of MpIBP to dynamically shape the morphology of a single ice crystal. Circular dichroism (CD) was used to relate the IRI and DIS activity of MpIBP to secondary structure. The results illustrate that MpIBP secondary structure was stable between pH 6 and pH 10. It was found that MpIBP did not interact with ice at pH ≤ 4 or pH ≥ 13. At 6 ≤ pH ≥ 12 MpIBP exhibited a reduction in grain size of ice crystals as compared to control solutions and demonstrated dynamic ice shaping at 6 ≤ pH ≥ 10. The results substantiate that MpIBP retains some secondary structure and function in non-neutral pH environments; thereby, enabling its potential utility in nonphysiological materials science and engineering applications.
Collapse
|
18
|
Murray KA, Tomás RMF, Gibson MI. Low DMSO Cryopreservation of Stem Cells Enabled by Macromolecular Cryoprotectants. ACS APPLIED BIO MATERIALS 2020; 3:5627-5632. [PMID: 32984779 PMCID: PMC7509910 DOI: 10.1021/acsabm.0c00638] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/18/2020] [Indexed: 12/31/2022]
Abstract
Mesenchymal stromal (stem) cells have potential in regenerative medicine and modulating the immune system. To deliver any cell-based therapy to the patient, it must be cryopreserved, most commonly in DMSO, which impacts cell function and causes clinical side effects. Here we report the use of a synthetically scalable polyampholyte to rescue the cryopreservation of mesenchymal stromal cells in low [DMSO] cryopreservation. Flow cytometry showed retention of key markers of multipotency comparable to 10% (v/v) DMSO, and the cells could be differentiated, showing this polymer material can be used to improve, or replace, current cryopreservation strategies.
Collapse
Affiliation(s)
- Kathryn A. Murray
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Ruben M. F. Tomás
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom,Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom,
| |
Collapse
|
19
|
Stubbs C, Bailey TL, Murray K, Gibson MI. Polyampholytes as Emerging Macromolecular Cryoprotectants. Biomacromolecules 2020; 21:7-17. [PMID: 31418266 PMCID: PMC6960013 DOI: 10.1021/acs.biomac.9b01053] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/15/2019] [Indexed: 11/29/2022]
Abstract
Cellular cryopreservation is a platform technology which underpins cell biology, biochemistry, biomaterials, diagnostics, and the cold chain for emerging cell-based therapies. This technique relies on effective methods for banking and shipping to avoid the need for continuous cell culture. The most common method to achieve cryopreservation is to use large volumes of organic solvent cryoprotective agents which can promote either a vitreous (ice free) phase or dehydrate and protect the cells. These methods are very successful but are not perfect: not all cell types can be cryopreserved and recovered, and the cells do not always retain their phenotype and function post-thaw. This Perspective will introduce polyampholytes as emerging macromolecular cryoprotective agents and demonstrate they have the potential to impact a range of fields from cell-based therapies to basic cell biology and may be able to improve, or replace, current solvent-based cryoprotective agents. Polyampholytes have been shown to be remarkable (mammalian cell) cryopreservation enhancers, but their mechanism of action is unclear, which may include membrane protection, solvent replacement, or a yet unknown protective mechanism, but it seems the modulation of ice growth (recrystallization) may only play a minor role in their function, unlike other macromolecular cryoprotectants. This Perspective will discuss their synthesis and summarize the state-of-the-art, including hypotheses of how they function, to introduce this exciting area of biomacromolecular science.
Collapse
Affiliation(s)
- Christopher Stubbs
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Trisha L. Bailey
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Kathryn Murray
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
- Warwick
Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| |
Collapse
|
20
|
Bailey T, Stubbs C, Murray K, Tomás RMF, Otten L, Gibson MI. Synthetically Scalable Poly(ampholyte) Which Dramatically Enhances Cellular Cryopreservation. Biomacromolecules 2019; 20:3104-3114. [PMID: 31268698 PMCID: PMC6692820 DOI: 10.1021/acs.biomac.9b00681] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/17/2019] [Indexed: 11/28/2022]
Abstract
The storage and transport of frozen cells underpin the emerging/existing cell-based therapies and are used in every biomedical research lab globally. The current gold-standard cryoprotectant dimethyl sulfoxide (DMSO) does not give quantitative cell recovery in suspension or in two-dimensional (2D) or three-dimensional (3D) cell models, and the solvent and cell debris must be removed prior to application/transfusion. There is a real need to improve this 50-year-old method to underpin emerging regenerative and cell-based therapies. Here, we introduce a potent and synthetically scalable polymeric cryopreservation enhancer which is easily obtained in a single step from a low cost and biocompatible precursor, poly(methyl vinyl ether-alt-maleic anhydride). This poly(ampholyte) enables post-thaw recoveries of up to 88% for a 2D cell monolayer model compared to just 24% using conventional DMSO cryopreservation. The poly(ampholyte) also enables reduction of [DMSO] from 10 wt % to just 2.5 wt % in suspension cryopreservation, which can reduce the negative side effects and speed up post-thaw processing. After thawing, the cells have reduced membrane damage and faster growth rates compared to those without the polymer. The polymer appears to function by a unique extracellular mechanism by stabilization of the cell membrane, rather than by modulation of ice formation and growth. This new macromolecular cryoprotectant will find applications across basic and translational biomedical science and may improve the cold chain for cell-based therapies.
Collapse
Affiliation(s)
- Trisha
L. Bailey
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Christopher Stubbs
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Kathryn Murray
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Ruben M. F. Tomás
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Lucienne Otten
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department
of Chemistry and Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
| |
Collapse
|
21
|
Biggs CI, Stubbs C, Graham B, Fayter AER, Hasan M, Gibson MI. Mimicking the Ice Recrystallization Activity of Biological Antifreezes. When is a New Polymer "Active"? Macromol Biosci 2019; 19:e1900082. [PMID: 31087781 PMCID: PMC6828557 DOI: 10.1002/mabi.201900082] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/26/2019] [Indexed: 01/16/2023]
Abstract
Antifreeze proteins and ice-binding proteins have been discovered in a diverse range of extremophiles and have the ability to modulate the growth and formation of ice crystals. Considering the importance of cryoscience across transport, biomedicine, and climate science, there is significant interest in developing synthetic macromolecular mimics of antifreeze proteins, in particular to reproduce their property of ice recrystallization inhibition (IRI). This activity is a continuum rather than an "on/off" property and there may be multiple molecular mechanisms which give rise to differences in this observable property; the limiting concentrations for ice growth vary by more than a thousand between an antifreeze glycoprotein and poly(vinyl alcohol), for example. The aim of this article is to provide a concise comparison of a range of natural and synthetic materials that are known to have IRI, thus providing a guide to see if a new synthetic mimic is active or not, including emerging materials which are comparatively weak compared to antifreeze proteins, but may have technological importance. The link between activity and the mechanisms involving either ice binding or amphiphilicity is discussed and known materials assigned into classes based on this.
Collapse
Affiliation(s)
- Caroline I Biggs
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Ben Graham
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Alice E R Fayter
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Muhammad Hasan
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Warwick Medical School, , University of Warwick, Coventry, CV4 7AL, UK
| |
Collapse
|
22
|
Li T, Zhao Y, Zhong Q, Wu T. Inhibiting Ice Recrystallization by Nanocelluloses. Biomacromolecules 2019; 20:1667-1674. [DOI: 10.1021/acs.biomac.9b00027] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Teng Li
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, Tennessee 37996, United States
| | - Ying Zhao
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, Tennessee 37996, United States
- Glycomics and
Glycan Bioengineering Research Center (GGBRC), College of Food Science and Technology, Nanjing Agricultural University, Weigang 1, Nanjing 210095, People’s Republic of China
| | - Qixin Zhong
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, Tennessee 37996, United States
| | - Tao Wu
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, Tennessee 37996, United States
| |
Collapse
|
23
|
Delesky EA, Frazier SD, Wallat JD, Bannister KL, Heveran CM, Srubar WV. Ice-Binding Protein from Shewanella frigidimarinas Inhibits Ice Crystal Growth in Highly Alkaline Solutions. Polymers (Basel) 2019; 11:E299. [PMID: 30960283 PMCID: PMC6419212 DOI: 10.3390/polym11020299] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/03/2019] [Accepted: 02/05/2019] [Indexed: 01/03/2023] Open
Abstract
The ability of a natural ice-binding protein from Shewanella frigidimarina (SfIBP) to inhibit ice crystal growth in highly alkaline solutions with increasing pH and ionic strength was investigated in this work. The purity of isolated SfIBP was first confirmed via sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and size-exclusion chromatography with an ultraviolet detector (SEC-UV). Protein stability was evaluated in the alkaline solutions using circular dichroism spectroscopy, SEC-UV, and SDS-PAGE. SfIBP ice recrystallization inhibition (IRI) activity, a measure of ice crystal growth inhibition, was assessed using a modified splat assay. Statistical analysis of results substantiated that, despite partial denaturation and misfolding, SfIBP limited ice crystal growth in alkaline solutions (pH ≤ 12.7) with ionic strength I ≤ 0.05 mol/L, but did not exhibit IRI activity in alkaline solutions where pH ≥ 13.2 and I ≥ 0.16 mol/L. IRI activity of SfIBP in solutions with pH ≤ 12.7 and I ≤ 0.05 mol/L demonstrated up to ≈ 66% reduction in ice crystal size compared to neat solutions.
Collapse
Affiliation(s)
- Elizabeth A Delesky
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Shane D Frazier
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Jaqueline D Wallat
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder; Boulder, CO 80309, USA.
| | - Kendra L Bannister
- Department of Chemical and Biological Engineering, University of Colorado Boulder; Boulder, CO 80309, USA.
| | - Chelsea M Heveran
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder; Boulder, CO 80309, USA.
| | - Wil V Srubar
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder; Boulder, CO 80309, USA.
| |
Collapse
|
24
|
Zhao J, Johnson MA, Fisher R, Burke NAD, Stöver HDH. Synthetic Polyampholytes as Macromolecular Cryoprotective Agents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1807-1817. [PMID: 30134094 DOI: 10.1021/acs.langmuir.8b01602] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of polyampholytes based on different molar ratios on N, N-dimethylaminopropyl methacrylamide (DMAPMA), acrylic acid (AA), and optionally, N- tert-butylacrylamide ( t-BuAAm), were prepared by free radical copolymerization, and tested as DMSO-free cryoprotective agents for 3T3 fibroblast cells by using a standard freeze-rethaw protocol. Polybetaines prepared by reaction of DMAPMA homo and copolymers with 1,3-propane sultone were used as additional controls. Results showed strong effects of copolymer composition, molecular weight, polymer and NaCl concentrations, on post-thaw cell viability. Binary (DMAPMA/AA) copolymers showed best post-thaw cell viability of 70% at a 30/70 mol % ratio of DMAPMA/AA, which increased to 90% upon introduction of 9 mol % t-BuAAm while maintaining the 30/70 mol % cation/anion ratio. The use of acrylamide linkages in DMAPMA ensures absence of hydrolytic loss of cationic side chains. These polyampholytes were found to decrease ice crystal size and to form a polymer-rich, ice-free layer around cells, reducing damage from intercellular ice crystals during both freezing and thawing steps. These polyampholytes also dehydrate cells during freezing, which helps protect cells from intracellular ice damage. While cell viability immediately after thawing was high, subsequent culturing revealed poor attachment and long-term viability, which is attributed to residual cell damage from intracellular ice formation. Addition of 2 wt % DMSO or 1% BSA to the polymer-based freeze medium was found to mitigate this damage and result in post-thaw viabilities matching those achieved with 10 wt % DMSO.
Collapse
Affiliation(s)
- J Zhao
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - M A Johnson
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - R Fisher
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - N A D Burke
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - H D H Stöver
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| |
Collapse
|
25
|
Designing the next generation of cryoprotectants - From proteins to small molecules. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24086] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
26
|
Nagao M, Sengupta J, Diaz-Dussan D, Adam M, Wu M, Acker J, Ben R, Ishihara K, Zeng H, Miura Y, Narain R. Synthesis of Highly Biocompatible and Temperature-Responsive Physical Gels for Cryopreservation and 3D Cell Culture. ACS APPLIED BIO MATERIALS 2018; 1:356-366. [DOI: 10.1021/acsabm.8b00096] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Masanori Nagao
- Department of Chemical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | | | | | - Madeleine Adam
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | | | - Jason Acker
- Centre for Innovation, Canadian Blood Services, Edmonton, Alberta T6G 2R8, Canada
| | - Robert Ben
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Kazuhiko Ishihara
- Department of Materials Engineering, The University of Tokyo, Tokyo 113-8654, Japan
| | | | - Yoshiko Miura
- Department of Chemical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | | |
Collapse
|
27
|
Graham B, Bailey TL, Healey JRJ, Marcellini M, Deville S, Gibson MI. Polyproline as a Minimal Antifreeze Protein Mimic That Enhances the Cryopreservation of Cell Monolayers. Angew Chem Int Ed Engl 2017; 56:15941-15944. [PMID: 29044869 PMCID: PMC5722203 DOI: 10.1002/anie.201706703] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/27/2017] [Indexed: 01/01/2023]
Abstract
Tissue engineering, gene therapy, drug screening, and emerging regenerative medicine therapies are fundamentally reliant on high-quality adherent cell culture, but current methods to cryopreserve cells in this format can give low cell yields and require large volumes of solvent "antifreezes". Herein, we report polyproline as a minimum (bio)synthetic mimic of antifreeze proteins that is accessible by solution, solid-phase, and recombinant methods. We demonstrate that polyproline has ice recrystallisation inhibition activity linked to its amphipathic helix and that it enhances the DMSO cryopreservation of adherent cell lines. Polyproline may be a versatile additive in the emerging field of macromolecular cryoprotectants.
Collapse
Affiliation(s)
- Ben Graham
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV47ALUK
| | - Trisha L. Bailey
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV47ALUK
| | | | - Moreno Marcellini
- Ceramics Synthesis and Functionalization LabUMR3080 CNRS/Saint-Gobain550 Avenue Alphonse Jauffret84306CavaillonFrance
| | - Sylvain Deville
- Ceramics Synthesis and Functionalization LabUMR3080 CNRS/Saint-Gobain550 Avenue Alphonse Jauffret84306CavaillonFrance
| | - Matthew I. Gibson
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV47ALUK
- Warwick Medical SchoolUniversity of WarwickCoventryCV4 7ALUK
| |
Collapse
|
28
|
Graham B, Bailey TL, Healey JRJ, Marcellini M, Deville S, Gibson MI. Polyproline as a Minimal Antifreeze Protein Mimic That Enhances the Cryopreservation of Cell Monolayers. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706703] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ben Graham
- Department of Chemistry; University of Warwick; Gibbet Hill Road Coventry CV47 AL UK
| | - Trisha L. Bailey
- Department of Chemistry; University of Warwick; Gibbet Hill Road Coventry CV47 AL UK
| | | | - Moreno Marcellini
- Ceramics Synthesis and Functionalization Lab; UMR3080 CNRS/Saint-Gobain; 550 Avenue Alphonse Jauffret 84306 Cavaillon France
| | - Sylvain Deville
- Ceramics Synthesis and Functionalization Lab; UMR3080 CNRS/Saint-Gobain; 550 Avenue Alphonse Jauffret 84306 Cavaillon France
| | - Matthew I. Gibson
- Department of Chemistry; University of Warwick; Gibbet Hill Road Coventry CV47 AL UK
- Warwick Medical School; University of Warwick; Coventry CV4 7AL UK
| |
Collapse
|
29
|
Biggs CI, Bailey TL, Ben Graham, Stubbs C, Fayter A, Gibson MI. Polymer mimics of biomacromolecular antifreezes. Nat Commun 2017; 8:1546. [PMID: 29142216 PMCID: PMC5688100 DOI: 10.1038/s41467-017-01421-7] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 09/15/2017] [Indexed: 11/08/2022] Open
Abstract
Antifreeze proteins from polar fish species are remarkable biomacromolecules which prevent the growth of ice crystals. Ice crystal growth is a major problem in cell/tissue cryopreservation for transplantation, transfusion and basic biomedical research, as well as technological applications such as icing of aircraft wings. This review will introduce the rapidly emerging field of synthetic macromolecular (polymer) mimics of antifreeze proteins. Particular focus is placed on designing polymers which have no structural similarities to antifreeze proteins but reproduce the same macroscopic properties, potentially by different molecular-level mechanisms. The application of these polymers to the cryopreservation of donor cells is also introduced.
Collapse
Affiliation(s)
- Caroline I Biggs
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Trisha L Bailey
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Ben Graham
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Alice Fayter
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK.
| |
Collapse
|
30
|
He Z, Zheng L, Liu Z, Jin S, Li C, Wang J. Inhibition of Heterogeneous Ice Nucleation by Bioinspired Coatings of Polyampholytes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30092-30099. [PMID: 28812348 DOI: 10.1021/acsami.7b10014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Control of heterogeneous ice nucleation (HIN) on foreign surfaces is of great importance for anti-ice-nucleation material design. In this work, we studied the HIN behaviors on various ion-modified poly(butylene succinate) (PBS) surfaces via chain-extension reaction. Inspired by antifreeze proteins (AFPs), the PBS-based polyampholytes, containing both negative and positive charge groups on a single chain, show excellent performance of ice nucleation inhibition and freezing delay. Unlike the extremely high price and low availability of AFPs, these PBS-based polyampholytes can be commercially synthesized under mild reaction conditions. Through water freezing tests on a wide range of substrates at different temperatures, these PBS-based polyampholytes have shown application value of tuning ice nucleation via a simple spin-coating method.
Collapse
Affiliation(s)
- Zhiyuan He
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Liuchun Zheng
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Zhenqi Liu
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Shenglin Jin
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Chuncheng Li
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Jianjun Wang
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| |
Collapse
|
31
|
Phillips D, Harrison J, Richards SJ, Mitchell DE, Tichauer E, Hubbard ATM, Guy C, Hands-Portman I, Fullam E, Gibson MI. Evaluation of the Antimicrobial Activity of Cationic Polymers against Mycobacteria: Toward Antitubercular Macromolecules. Biomacromolecules 2017; 18:1592-1599. [PMID: 28365981 PMCID: PMC5435458 DOI: 10.1021/acs.biomac.7b00210] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/28/2017] [Indexed: 11/29/2022]
Abstract
Antimicrobial resistance is a global healthcare problem with a dwindling arsenal of usable drugs. Tuberculosis, caused by Mycobacterium tuberculosis, requires long-term combination therapy and multi- and totally drug resistant strains have emerged. This study reports the antibacterial activity of cationic polymers against mycobacteria, which are distinguished from other Gram-positive bacteria by their unique cell wall comprising a covalently linked mycolic acid-arabinogalactan-peptidoglycan complex (mAGP), interspersed with additional complex lipids which helps them persist in their host. The present study finds that poly(dimethylaminoethyl methacrylate) has particularly potent antimycobacterial activity and high selectivity over two Gram-negative strains. Removal of the backbone methyl group (poly(dimethylaminoethyl acrylate)) decreased antimycobacterial activity, and poly(aminoethyl methacrylate) also had no activity against mycobacteria. Hemolysis assays revealed poly(dimethylaminoethyl methacrylate) did not disrupt red blood cell membranes. Interestingly, poly(dimethylaminoethyl methacrylate) was not found to permeabilize mycobacterial membranes, as judged by dye exclusion assays, suggesting the mode of action is not simple membrane disruption, supported by electron microscopy analysis. These results demonstrate that synthetic polycations, with the correctly tuned structure are useful tools against mycobacterial infections, for which new drugs are urgently required.
Collapse
Affiliation(s)
- Daniel
J. Phillips
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - James Harrison
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Sarah-Jane Richards
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Daniel E. Mitchell
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Esther Tichauer
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Alasdair T. M. Hubbard
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Collette Guy
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Ian Hands-Portman
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Elizabeth Fullam
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department of Chemistry, School of Life Sciences, and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| |
Collapse
|
32
|
|
33
|
Stubbs C, Lipecki J, Gibson MI. Regioregular Alternating Polyampholytes Have Enhanced Biomimetic Ice Recrystallization Activity Compared to Random Copolymers and the Role of Side Chain versus Main Chain Hydrophobicity. Biomacromolecules 2017; 18:295-302. [PMID: 27936601 PMCID: PMC5271573 DOI: 10.1021/acs.biomac.6b01691] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/06/2016] [Indexed: 12/14/2022]
Abstract
Antifreeze proteins from polar fish species are potent ice recrystallization inhibitors (IRIs) effectively stopping all ice growth. Additives that have IRI activity have been shown to enhance cellular cryopreservation with potential to improve the distribution of donor cells and tissue. Polyampholytes, polymers with both anionic and cationic side chains, are a rapidly emerging class of polymer cryoprotectants, but their mode of action and the structural features essential for activity are not clear. Here regioregular polyampholytes are synthesized from maleic anhydride copolymers to enable stoichiometric installation of the charged groups, ensuring regioregularity, which is not possible using conventional random copolymerization. A modular synthetic strategy is employed to enable the backbone and side chain hydrophobicity to be varied, with side chain hydrophobicity found to have a profound effect on the IRI activity. The activity of the regioregular polymers was found to be superior to those derived from a standard random copolymerization with statistical incorporation of monomers, demonstrating that sequence composition is crucial to the activity of IRI active polyampholytes.
Collapse
Affiliation(s)
- Christopher Stubbs
- Department of Chemistry and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Julia Lipecki
- Department of Chemistry and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department of Chemistry and Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| |
Collapse
|
34
|
Matsumura K, Kawamoto K, Takeuchi M, Yoshimura S, Tanaka D, Hyon SH. Cryopreservation of a Two-Dimensional Monolayer Using a Slow Vitrification Method with Polyampholyte to Inhibit Ice Crystal Formation. ACS Biomater Sci Eng 2016; 2:1023-1029. [DOI: 10.1021/acsbiomaterials.6b00150] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuaki Matsumura
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Keiko Kawamoto
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Masahiro Takeuchi
- Taiyo Nippon Sanso Corp., Toyo
Building, 1-3-26 Koyama, Shinagawa-ku, Tokyo 142-8558, Japan
| | - Shigehiro Yoshimura
- Taiyo Nippon Sanso Corp., Toyo
Building, 1-3-26 Koyama, Shinagawa-ku, Tokyo 142-8558, Japan
| | - Daisuke Tanaka
- Genetic
Resources Center, National Agriculture and Food Research Ogranization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Suong-Hyu Hyon
- Center
for Fiber and Textile Science, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
| |
Collapse
|
35
|
Rajan R, Hayashi F, Nagashima T, Matsumura K. Toward a Molecular Understanding of the Mechanism of Cryopreservation by Polyampholytes: Cell Membrane Interactions and Hydrophobicity. Biomacromolecules 2016; 17:1882-93. [DOI: 10.1021/acs.biomac.6b00343] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Robin Rajan
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Fumiaki Hayashi
- NMR
Facility Support Unit, NMR Facility, Division of Structural and Synthetic
Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Toshio Nagashima
- NMR
Facility, Division of Structural and Synthetic Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Kazuaki Matsumura
- School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| |
Collapse
|
36
|
Phillips DJ, Congdon TR, Gibson MI. Activation of Ice Recrystallization Inhibition Activity of Poly(vinyl alcohol) using a Supramolecular Trigger. Polym Chem 2016; 7:1701-1704. [PMID: 28003855 PMCID: PMC5166974 DOI: 10.1039/c5py01948f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antifreeze (glyco)proteins (AF(G)Ps) have potent ice recrystallisation inhibition (IRI) activity - a desirable phenomenon in applications such as cryopreservation, frozen food and more. In Nature AF(G)P activity is regulated by protein expression levels in response to an environmental stimulus; temperature. However, this level of regulation is not possible in synthetic systems. Here, a synthetic macromolecular mimic is introduced, using supramolecular assembly to regulate activity. Catechol-terminated poly(vinyl alcohol) was synthesised by RAFT polymerization. Upon addition of Fe3+, larger supramolecular star polymers form by assembly with two or three catechols. This increase in molecular weight effectively 'switches on' the IRI activity and is the first example of external control over the function of AFP mimetics. This provides a simple but elegant solution to the challenge of external control of AFP-mimetic function.
Collapse
Affiliation(s)
| | | | - Matthew I. Gibson
- Department of Chemistry and Warwick Medical School, University of
Warwick, Coventry, UK, CV4 7AL
| |
Collapse
|
37
|
Mitchell DE, Congdon T, Rodger A, Gibson MI. Gold Nanoparticle Aggregation as a Probe of Antifreeze (Glyco) Protein-Inspired Ice Recrystallization Inhibition and Identification of New IRI Active Macromolecules. Sci Rep 2015; 5:15716. [PMID: 26499135 PMCID: PMC4620503 DOI: 10.1038/srep15716] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 10/02/2015] [Indexed: 11/09/2022] Open
Abstract
Antifreeze (glyco)proteins are found in polar fish species and act to slow the rate of growth of ice crystals; a property known as ice recrystallization inhibition. The ability to slow ice growth is of huge technological importance especially in the cryopreservation of donor cells and tissue, but native antifreeze proteins are often not suitable, nor easily available. Therefore, the search for new materials that mimic this function is important, but currently limited by the low-throughout assays associated with the antifreeze properties. Here 30 nm gold nanoparticles are demonstrated to be useful colorimetric probes for ice recrystallization inhibition, giving a visible optical response and is compatible with 96 well plates for high-throughout studies. This method is faster, requires less infrastructure, and has easier interpretation than the currently used 'splat' methods. Using this method, a series of serum proteins were identified to have weak, but specific ice recrystallization inhibition activity, which was removed upon denaturation. It is hoped that high-throughput tools such as this will accelerate the discovery of new antifreeze mimics.
Collapse
Affiliation(s)
- Daniel E. Mitchell
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
- MOAC DTC, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Thomas Congdon
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Alison Rodger
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| |
Collapse
|
38
|
Mitchell D, Gibson MI. Latent Ice Recrystallization Inhibition Activity in Nonantifreeze Proteins: Ca2+-Activated Plant Lectins and Cation-Activated Antimicrobial Peptides. Biomacromolecules 2015; 16:3411-6. [PMID: 26407233 PMCID: PMC4646349 DOI: 10.1021/acs.biomac.5b01118] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/22/2015] [Indexed: 01/20/2023]
Abstract
Organisms living in polar regions have evolved a series of antifreeze (glyco) proteins (AFGPs) to enable them to survive by modulating the structure of ice. These proteins have huge potential for use in cellular cryopreservation, ice-resistant surfaces, frozen food, and cryosurgery, but they are limited by their relatively low availability and questions regarding their mode of action. This has triggered the search for biomimetic materials capable of reproducing this function. The identification of new structures and sequences capable of inhibiting ice growth is crucial to aid our understanding of these proteins. Here, we show that plant c-type lectins, which have similar biological function to human c-type lectins (glycan recognition) but no sequence homology to AFPs, display calcium-dependent ice recrystallization inhibition (IRI) activity. This IRI activity can be switched on/off by changing the Ca2+ concentration. To show that more (nonantifreeze) proteins may exist with the potential to display IRI, a second motif was considered, amphipathicity. All known AFPs have defined hydrophobic/hydrophilic domains, rationalizing this choice. The cheap, and widely used, antimicrobial Nisin was found to have cation-dependent IRI activity, controlled by either acid or addition of histidine-binding ions such as zinc or nickel, which promote its amphipathic structure. These results demonstrate a new approach in the identification of antifreeze protein mimetic macromolecules and may help in the development of synthetic mimics of AFPs.
Collapse
Affiliation(s)
- Daniel
E. Mitchell
- Department of Chemistry, MOAC DTC, University of
Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department of Chemistry, MOAC DTC, University of
Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
| |
Collapse
|
39
|
Mitchell DE, Cameron NR, Gibson MI. Rational, yet simple, design and synthesis of an antifreeze-protein inspired polymer for cellular cryopreservation. Chem Commun (Camb) 2015; 51:12977-80. [PMID: 26176027 PMCID: PMC4672748 DOI: 10.1039/c5cc04647e] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/07/2015] [Indexed: 11/21/2022]
Abstract
Antifreeze (glyco) proteins AF(G)Ps are potent ice recrystallization inhibitors, which is a desirable property to enhance cryopreservation of donor tissue/cells. Here we present the rational synthesis of a new, biomimetic, ice-recrystallization inhibiting polymer derived from a cheap commodity polymer, based on an ampholyte structure. The polymer is used to enhance the cryopreservation of red blood cells, demonstrating a macromolecular solution to tissue storage.
Collapse
Affiliation(s)
- Daniel E. Mitchell
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK .
- MOAC Doctoral Training Centre , University of Warwick , Coventry , CV4 7AL , UK
| | - Neil R. Cameron
- Department of Materials Science and Engineering , Monash University , Australia
- School of Engineering , University of Warwick , UK
| | - Matthew I. Gibson
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK .
| |
Collapse
|
40
|
Deller RC, Vatish M, Mitchell DA, Gibson MI. Glycerol-Free Cryopreservation of Red Blood Cells Enabled by Ice-Recrystallization-Inhibiting Polymers. ACS Biomater Sci Eng 2015; 1:789-794. [DOI: 10.1021/acsbiomaterials.5b00162] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Manu Vatish
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Oxford, United Kingdom
| | | | | |
Collapse
|