1
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Hayashi Y, Uno Y, Kino-Oka M, Sugiyama H. Computer-aided exploration of multiobjective optimal temperature profiles in slow freezing for human induced pluripotent stem cells. Cryobiology 2024; 115:104885. [PMID: 38513997 DOI: 10.1016/j.cryobiol.2024.104885] [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: 11/13/2023] [Revised: 02/05/2024] [Accepted: 03/06/2024] [Indexed: 03/23/2024]
Abstract
Human induced pluripotent stem (hiPS) cells have demonstrated promising potential in regenerative medical therapeutics. After successful clinical trials, the demand for hiPS cells has steadily increased. Therefore, the optimization of hiPS cell freezing processes for storage and transportation is essential. Here, we presented a computer-aided exploration of multiobjective optimal temperature profiles in slow freezing for hiPS cells. This study was based on a model that calculates cell survival rates after thawing, and the model was extended to evaluate cell potentials until 24 h after seeding. To estimate parameter values for this extension, freezing experiments were performed using constant cooling rates. Using quality and productivity indicators, we evaluated 16,206 temperature profiles using our model, and a promising profile was obtained. Finally, an experimental investigation of the profile was undertaken, and the contribution of the temperature profile to both quality and productivity was confirmed.
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Affiliation(s)
- Yusuke Hayashi
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, 113-8656, Tokyo, Japan
| | - Yuki Uno
- Department of Biotechnology, Osaka University, 2-1, Yamadaoka, Suita, 565-0871, Osaka, Japan
| | - Masahiro Kino-Oka
- Department of Biotechnology, Osaka University, 2-1, Yamadaoka, Suita, 565-0871, Osaka, Japan
| | - Hirokazu Sugiyama
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, 113-8656, Tokyo, Japan.
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2
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Wang X, Wang E, Zhao G. Advanced cryopreservation engineering strategies: the critical step to utilize stem cell products. CELL REGENERATION (LONDON, ENGLAND) 2023; 12:28. [PMID: 37528321 PMCID: PMC10393932 DOI: 10.1186/s13619-023-00173-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/12/2023] [Indexed: 08/03/2023]
Abstract
With the rapid development of stem cell-related therapies and regenerative medicine, the clinical application of stem cell products is on the rise. However, ensuring the effectiveness of these products after storage and transportation remains a challenge in the transformation to clinical trials. Cryopreservation technology allows for the long-term storage of cells while ensuring viability, making it a top priority for stem cell preservation. The field of cryopreservation-related engineering technologies is thriving, and this review provides an overview of the background and basic principles of cryopreservation. It then delves into the main bioengineering technologies and strategies used in cryopreservation, including photothermal and electromagnetic rewarming, microencapsulation, and synergetic ice inhibition. Finally, the current challenges and future prospects in the field of efficient cryopreservation of stem cells are summarized and discussed.
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Affiliation(s)
- Xiaohu Wang
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, 230027, China
| | - Enyu Wang
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, 230027, China
| | - Gang Zhao
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, 230027, China.
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3
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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.
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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
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4
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Byeun DG, Moon BS, Lee S, Choi JK. Germ Cell Isolation and Cryopreservation from Reproductive Organs of Brown Mealworm. INSECTS 2022; 13:1108. [PMID: 36555018 PMCID: PMC9783178 DOI: 10.3390/insects13121108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
This study aimed to isolate and freeze germ cells from the superior brown mealworm. Styrofoam diet changes were observed for 20 days to determine whether mealworms were useful insects for decomposing Styrofoam. The average weight of mealworms before the Styrofoam diet was 500 mg, which decreased to 336 mg at D20 after their diet. To preserve mealworms with excellent Styrofoam-degrading ability, we first isolated the reproductive organs of mealworms, testes, ovaries, sperms, and ovarioles. Morphologically, male and female adult brown mealworms were distinguished according to the presence or absence of a protrusion at the tip of the fifth segment of the abdomen. Sperms and ovarioles were observed in anatomically isolated testes and ovaries. We compared mechanical and enzymatic (collagenase I) methods to effectively isolate ovarioles from adult female brown mealworms. For the enzymatic method, most were torn and burst as the membrane of the ovarioles was damaged by collagenase I, unlike the mechanical method. To preserve the superior genetic resources of mealworms, we cryopreserved the ovaries of female brown mealworms using slow-freezing and vitrification. Histological analysis showed that the yolk sac was completely damaged in the ovaries after slow-freezing. However, only partial damage was achieved in the vitrification group compared to the control group (no freezing). The newly developed vitrification method with alginate-encapsulated ovarioles maintained the yolk sac in the ovarioles but was evenly distributed. These results provide basic data for reproductive studies of other useful insects and contribute to the biobanking and fertility preservation of superior mealworm germ cells and endangered insects.
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Affiliation(s)
- Do Gyeung Byeun
- Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Byoung-San Moon
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Republic of Korea
| | - Seungki Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 404-708, Republic of Korea
| | - Jung Kyu Choi
- Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Republic of Korea
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5
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Scholz BX, Hayashi Y, Udugama IA, Kino-oka M, Sugiyama H. A multilayered approach to scale-up forced convection-based freezing of human induced pluripotent stem cells. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.107851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Hayashi Y, Kino-oka M, Sugiyama H. Hybrid-model-based design of fill-freeze-thaw processes for human induced pluripotent stem cells considering productivity and quality. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2021.107566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Direct Evidence of Ice Crystallization Inhibition by Dielectric Relaxation of Hydrated Ions. MATERIALS 2021; 14:ma14226975. [PMID: 34832375 PMCID: PMC8618217 DOI: 10.3390/ma14226975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
In this paper, the inhibition effect of an alternative current (AC) electric field on ice crystallization in 0.9 wt % NaCl aqueous solution was confirmed thermodynamically with characterization. An innovative experimental and analytical method, combining differential scanning calorimeter (DSC) measurement with an externally applied electric field was created by implanting microelectrodes in a sample crucible. It was found that the ice crystallization, including pure ice and salty ice, was obviously inhibited after field cooling with an external AC electric field in a frequency range of 100 k-10 MHz, and the crystallization ratio was related to frequency. Compared with non-field cooling, the crystallization ratio of ice crystals was reduced to less than 20% when E = 57.8 kV/m and f = 1 MHz. The dielectric spectrum results show that this inhibition effect of an alternating electric field on ice crystal growth is closely related to the dielectric relaxation process of hydrated ions.
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8
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Cheepa FF, Zhao G, Panhwar F, Memon K. Controlled Release of Cryoprotectants by Near-Infrared Irradiation for Improved Cell Cryopreservation. ACS Biomater Sci Eng 2021; 7:2520-2529. [PMID: 34028256 DOI: 10.1021/acsbiomaterials.1c00171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cryopreservation is essential to store living cells and tissues for future use while maintaining the proper levels of cell functions. The use of cryoprotective agents (CPAs) to inhibit intracellular ice formation during cryopreservation is vital for cell survival, but the addition and removal of CPAs and ice recrystallization during rewarming will cause fatal injury to cells. The conventional CPA loading and unloading methods generate osmotic shocks and cause mechanical injury to biological samples, and the conventional method of rewarming using a water bath also leads to ice recrystallization and devitrification. A new CPA-loaded microparticle-based method for loading and photothermal rewarming under near-infrared (NIR) laser irradiation was proposed to overcome these difficulties. We have successfully achieved the controlled release of CPAs (2 M EG, 2 M PG, and 0.5 M trehalose) with a graphene oxide (GO, 0.04% w/v) core from a 1.5% (w/v) sodium alginate shell to the human umbilical vein endothelial cells (HUVECs) within 60 s using NIR laser irradiation (808 nm Lasever at 5000 mW/cm2) and successfully recovered the CPA-loaded cells with 0.04% (w/v) GO in 8-10 s using the same NIR irradiation. The results show that this method achieved 25% higher viability of HUVECs compared to the conventional method. In short, this study proposes a new approach for achieving controlled CPA loading to cells with a photothermal-induced strategy for cell cryopreservation.
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Affiliation(s)
- Faryal Farooq Cheepa
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Fazil Panhwar
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Kashan Memon
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
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9
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Model-based assessment of temperature profiles in slow freezing for human induced pluripotent stem cells. Comput Chem Eng 2021. [DOI: 10.1016/j.compchemeng.2020.107150] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Measurement of grouped intracellular solute osmotic virial coefficients. Cryobiology 2020; 97:198-216. [DOI: 10.1016/j.cryobiol.2019.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/30/2019] [Accepted: 09/30/2019] [Indexed: 02/04/2023]
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11
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Xiang X, Liu Z, Zhao G. Sodium Alginate as a Novel Cryoprotective Agent for Cryopreservation of Endothelial Cells in a Closed Polytetrafluoroethylene Loop. Biopreserv Biobank 2020; 18:321-328. [PMID: 32552032 DOI: 10.1089/bio.2020.0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Human umbilical vein endothelial cells (HUVECs) have wide applications in tissue engineering, drug delivery, and other fields due to their low antigenicity. Therefore, it is of great significance to effectively cryopreserve HUVECs for subsequent use (i.e., transport, long-term storage of cell banks). However, many commonly used cryoprotective agents (CPAs) are cytotoxic, so finding ideal CPAs to reduce the damage will pave the way for the application of HUVEC's cryopreservation. In this study, sodium alginate (SA) was employed as one of the main CPAs in a closed polytetrafluoroethylene (PTFE) loop used for cryopreservation with fast freezing of HUVECs. The ice crystal growth process was observed and the thermal enthalpy changes and osmolality of different solutions were tested. Moreover, the effects on cell viability and recovery were examined. The results showed that the addition of SA delayed the growth of ice crystals and decreased the number of ice crystals. Specifically, when 0.5% (w/v) SA was added to the CPAs, the cell survival increased by 10%. It is proved in this study that SA can be used as a novel CPA in combination with PTFE for the fast freezing of HUVECs, which is expected to improve the survival rate of cells and promote the exploration of protectants and cryopreservation in the future.
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Affiliation(s)
- Xingxue Xiang
- Department of Thermal Science and Energy Engineering and University of Science and Technology of China, Hefei, People's Republic of China
| | - Zhifeng Liu
- Department of Thermal Science and Energy Engineering and University of Science and Technology of China, Hefei, People's Republic of China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, People's Republic of China
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12
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Slow freezing process design for human induced pluripotent stem cells by modeling intracontainer variation. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2019.106597] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Li Y, Memon K, Zheng Y, Cheng Y, Mbogba MK, Wang P, Ouyang X, Zhao G. Microencapsulation Facilitates Low-Cryoprotectant Vitrification of Human Umbilical Vein Endothelial Cells. ACS Biomater Sci Eng 2019; 5:5273-5283. [DOI: 10.1021/acsbiomaterials.9b00726] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yufang Li
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Kashan Memon
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Yuanyuan Zheng
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Yue Cheng
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Momoh Karmah Mbogba
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Peitao Wang
- Department of Cryomedicine and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266000, Shandong, China
| | - Xilin Ouyang
- The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
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14
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Silva AM, Praxedes EC, Campos LB, Bezerra LG, Moreira SS, Maia KM, Souza AL, Silva AR. Epididymal sperm from Spix ’s yellow-toothed cavies sperm successfully cryopreserved in Tris extender with 6% glycerol and 20% egg yolk. Anim Reprod Sci 2018; 191:64-69. [DOI: 10.1016/j.anireprosci.2018.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/04/2018] [Accepted: 02/13/2018] [Indexed: 10/18/2022]
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15
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Zhao G, Liu X, Zhu K, He X. Hydrogel Encapsulation Facilitates Rapid-Cooling Cryopreservation of Stem Cell-Laden Core-Shell Microcapsules as Cell-Biomaterial Constructs. Adv Healthc Mater 2017; 6:10.1002/adhm.201700988. [PMID: 29178480 PMCID: PMC5729581 DOI: 10.1002/adhm.201700988] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 09/30/2017] [Indexed: 01/08/2023]
Abstract
Core-shell structured stem cell microencapsulation in hydrogel has wide applications in tissue engineering, regenerative medicine, and cell-based therapies because it offers an ideal immunoisolative microenvironment for cell delivery and 3D culture. Long-term storage of such microcapsules as cell-biomaterial constructs by cryopreservation is an enabling technology for their wide distribution and ready availability for clinical transplantation. However, most of the existing studies focus on cryopreservation of single cells or cells in microcapsules without a core-shell structure (i.e., hydrogel beads). The goal of this study is to achieve cryopreservation of stem cells encapsulated in core-shell microcapsules as cell-biomaterial constructs or biocomposites. To this end, a capillary microfluidics-based core-shell alginate hydrogel encapsulation technology is developed to produce porcine adipose-derived stem cell-laden microcapsules for vitreous cryopreservation with very low concentration (2 mol L-1 ) of cell membrane penetrating cryoprotective agents (CPAs) by suppressing ice formation. This may provide a low-CPA and cost-effective approach for vitreous cryopreservation of "ready-to-use" stem cell-biomaterial constructs, facilitating their off-the-shelf availability and widespread applications.
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Affiliation(s)
- Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Xiaoli Liu
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Kaixuan Zhu
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Xiaoming He
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA
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16
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Zielinski MW, McGann LE, Nychka JA, Elliott JAW. Nonideal Solute Chemical Potential Equation and the Validity of the Grouped Solute Approach for Intracellular Solution Thermodynamics. J Phys Chem B 2017; 121:10443-10456. [DOI: 10.1021/acs.jpcb.7b07992] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Michal W. Zielinski
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada T6G 2B7
| | - Locksley E. McGann
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada T6G 2B7
| | - John A. Nychka
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9
| | - Janet A. W. Elliott
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada T6G 2B7
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17
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Zhang Y, Zhao G, Chapal Hossain SM, He X. Modeling and experimental studies of enhanced cooling by medical gauze for cell cryopreservation by vitrification. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 2017; 114:1-7. [PMID: 29398719 PMCID: PMC5794028 DOI: 10.1016/j.ijheatmasstransfer.2017.06.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Vitrification is considered as an important alternative approach to traditional slow freezing method for cryopreservation of cells. A typical cell vitrification procedure involves a non-equilibrium cooling process commonly accomplished in liquid nitrogen, while in which film boiling is believed to greatly hinder heat transfer surrounding the sample, resulting in incomplete vitrification or a much higher critical concentration. In this study, we developed a simple while effective approach, wrapping traditional French-type straw with medical gauze, to greatly enhance convective heat transfer during cooling by suppress film boiling. We further established a coupled heat transfer model for cooling and warming of cell suspensions to investigate the inherent thermodynamic mechanism in this approach. The model describes both the macroscale thermal distributions in extracellular solution and the microscale ice crystallization inside the cells. The simulation indicated that straws wrapped with medical gauze would increase cell survival subject to vitrification cryopreservation by significantly increasing the cooling rate to inhibit intracellular ice formation (IIF). Our experiments on human umbilical vein endothelial cells (HUVECs) further confirmed the predictions in that the cell survival rate was significantly increased by wrapping straws with medical gauze.
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Affiliation(s)
- Yuntian Zhang
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, China
| | - S. M. Chapal Hossain
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaoming He
- Department of Biomedical Engineering, The Ohio State University, Columbus, USA
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18
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Zhao G, Fu J. Microfluidics for cryopreservation. Biotechnol Adv 2017; 35:323-336. [PMID: 28153517 PMCID: PMC6236673 DOI: 10.1016/j.biotechadv.2017.01.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 11/19/2022]
Abstract
Cryopreservation has utility in clinical and scientific research but implementation is highly complex and includes labor-intensive cell-specific protocols for the addition/removal of cryoprotective agents and freeze-thaw cycles. Microfluidic platforms can revolutionize cryopreservation by providing new tools to manipulate and screen cells at micro/nano scales, which are presently difficult or impossible with conventional bulk approaches. This review describes applications of microfluidic tools in cell manipulation, cryoprotective agent exposure, programmed freezing/thawing, vitrification, and in situ assessment in cryopreservation, and discusses achievements and challenges, providing perspectives for future development.
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Affiliation(s)
- Gang Zhao
- Center for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, PR China.
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Michigan Center for Integrative Research in Critical Care, University of Michigan, Ann Arbor, MI 48109, USA
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19
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Huang H, Choi JK, Rao W, Zhao S, Agarwal P, Zhao G, He X. Alginate Hydrogel Microencapsulation Inhibits Devitrification and Enables Large-Volume Low-CPA Cell Vitrification. ADVANCED FUNCTIONAL MATERIALS 2015; 25:6939-6850. [PMID: 26640426 PMCID: PMC4667367 DOI: 10.1002/adfm.201503047] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Cryopreservation of stem cells is important to meet their ever-increasing demand by the burgeoning cell-based medicine. The conventional slow freezing for stem cell cryopreservation suffers from inevitable cell injury associated with ice formation and the vitrification (i.e., no visible ice formation) approach is emerging as a new strategy for cell cryopreservation. A major challenge to cell vitrification is intracellular ice formation (IIF, a lethal event to cells) induced by devitrification (i.e., formation of visible ice in previously vitrified solution) during warming the vitrified cells at cryogenic temperature back to super-zero temperatures. Consequently, high and toxic concentrations of penetrating cryoprotectants (i.e., high CPAs, up to ~8 M) and/or limited sample volumes (up to ~2.5 μl) have been used to minimize IIF during vitrification. We reveal that alginate hydrogel microencapsulation can effectively inhibit devitrification during warming. Our data show that if ice formation were minimized during cooling, IIF is negligible in alginate hydrogel-microencapsulated cells during the entire cooling and warming procedure of vitrification. This enables vitrification of pluripotent and multipotent stem cells with up to ~4 times lower concentration of penetrating CPAs (up to 2 M, low CPA) in up to ~100 times larger sample volume (up to ~250 μl, large volume).
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Affiliation(s)
- Haishui Huang
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Jung Kyu Choi
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Wei Rao
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Shuting Zhao
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Pranay Agarwal
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Gang Zhao
- Center for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Xiaoming He
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA. Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
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Improved low-CPA vitrification of mouse oocytes using quartz microcapillary. Cryobiology 2015; 70:269-72. [PMID: 25869750 DOI: 10.1016/j.cryobiol.2015.04.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/04/2015] [Accepted: 04/05/2015] [Indexed: 01/24/2023]
Abstract
Cryopreservation by low-cryoprotectant (CPA) vitrification has the potential to combine all the advantages of the conventional high-CPA vitrification and slow-freezing approaches while avoiding their drawbacks. However, current low-CPA vitrification protocol for cryopreservation of oocytes requires a lengthy and multi-step procedure for unloading CPAs. In this study, we report a much-simplified procedure of using quartz microcapillary (QMC) for low-CPA vitrification of mouse oocytes with only one step for unloading CPAs. The immediate viability of oocytes after the improved low-CPA vitrification was determined to be more than 90%. Moreover, no significant difference was observed in terms of embryonic development from the two-cell to blastocyst stages between the fresh and vitrified oocytes after in vitro fertilization (IVF). This improved low-CPA vitrification technology has the potential for efficient cryopreservation of oocytes to preserve the fertility of mammals including humans for assisted reproductive medicine, maintenance of animal resource and endangered species, and livestock management.
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21
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Prickett RC, Marquez-Curtis LA, Elliott JA, McGann LE. Effect of supercooling and cell volume on intracellular ice formation. Cryobiology 2015; 70:156-63. [DOI: 10.1016/j.cryobiol.2015.02.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 02/04/2015] [Accepted: 02/12/2015] [Indexed: 10/24/2022]
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22
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Tian T, Zhao G, Han D, Zhu K, Chen D, Zhang Z, Wei Z, Cao Y, Zhou P. Effects of vitrification cryopreservation on follicular morphology and stress relaxation behaviors of human ovarian tissues: sucrose versus trehalose as the non-permeable protective agent. Hum Reprod 2015; 30:877-83. [DOI: 10.1093/humrep/dev012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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