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Aquino LVC, Rodrigues LLV, Olindo SL, Silva YLF, Oliveira LRM, Moura YBF, Pereira AF. L-Proline as a Cryoprotective Agent for the Preservation of Galea Spixii Skin Fibroblasts. Biopreserv Biobank 2024. [PMID: 38985578 DOI: 10.1089/bio.2024.0006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024] Open
Abstract
Somatic cell biobanking is a promising strategy for developing reproductive techniques. Although cryopreservation, a technique used for creating biobanks, has been performed on Galea spixii, structural and physiological damage to its cells highlight the need to optimize the cryoprotective solution being used. Therefore, the osmoprotective activity of 5 mM L-proline was evaluated as an alternative cryoprotectant for G. spixii fibroblast conservation. The concentration was defined based on previous studies conducted on mammalian cells. Cells derived from the skin of six individuals were cultured until the fifth passage were cryopreserved under the following treatments: (i) control (non-cryopreserved); (ii) a solution with 10% dimethyl sulfoxide (Me2SO), 10% fetal bovine serum (FBS), and 0.2 M sucrose; (iii) a solution with 10% Me2SO, 10% FBS, and 5 mM L-proline; and (iv) a solution with 10% Me2SO, 10% FBS, 0.2 M sucrose, and 5 mM L-proline. Tests were conducted to analyze cell morphology, viability, metabolism, proliferation, and apoptosis; reactive oxygen species (ROS) levels; and mitochondrial membrane activity (ΔΨm). A reduction in the number of viable cells (72.3% ± 1.2%) was observed in the sucrose-containing group compared to the control (86.7% ± 2.0%) and L-proline (88.4% ± 1.8% and 87.8% ± 2.1%) groups. After apoptotic analysis, a reduction in the number of viable cells was observed in the group with sucrose alone (74.6% ± 4.1%) compared to the control group (88.2% ± 1.1%). The ROS levels (1.03 ± 0.5 and 1.07 ± 0.5, respectively) and ΔΨm values (0.99 ± 0.42 and 1.22 ± 0.73, respectively) observed in the groups with L-proline were similar to that observed in the control group (1.00 ± 0.5 and 1.00 ± 0.4, respectively). Moreover, no difference was observed between groups for cell morphology, metabolism, or proliferation. Thus, L-proline is a cryoprotectant agent that can be used during G. spixii fibroblast cryopreservation, alone or with sucrose. In addition, we developed an adequate biobank for G. spixii, whereby stored cells could be used for reproductive techniques.
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Affiliation(s)
- Leonardo V C Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Luanna L V Rodrigues
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Samara L Olindo
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Yara L F Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Lhara R M Oliveira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Yasmin B F Moura
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | - Alexsandra F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, Brazil
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2
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Li H, Liu X, Zhang L, Zhang L. Plunge-Freezing Cryopreservation of Tendons. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14007-14015. [PMID: 38916446 DOI: 10.1021/acs.langmuir.4c01215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Allograft transplantation is an important method for tendon reconstruction after injury, and its clinical success highly relies on the storage and transportation of the grafts. Cryopreservation is a promising strategy for tendon storage. In this study, we report a novel cryopreservation agent (CPA) formulation with a high biocompatibility for tendon cryopreservation. Mainly composed of natural zwitterionic betaine and the biocompatible polymer poly(vinylpyrrolidone) (PVP), it exhibited ideal abilities to depress the freezing point and inhibit ice growth and recrystallization. Notably, after cryopreservation via plunge-freezing for 1 month, Young's modulus (144 MPa, 98% of fresh tendons) and ultimate stress (46.7 MPa, 99% of fresh tendons) remained stable, and the cross-linking of collagen microfibers, protein structures, and glycosaminoglycan (GAG) contents changed slightly. These results indicate that the formulation (5 wt % betaine and 5 wt % PVP in phosphate-buffered saline, PBS solution) effectively maintains the biomechanical properties and tissue structure. This work offers a novel cryopreservation method for tendons and may also provide insights into the long-term preservation of various other tissues.
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Affiliation(s)
- Haoyue Li
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Xinmeng Liu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Liming Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Lei Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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3
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Uko MP, Umana SI, Iwatt IJ, Udoekong NS, Mgbechidinma CL, Adie FU, Akan OD. Microbial ice-binding structures: A review of their applications. Int J Biol Macromol 2024; 275:133670. [PMID: 38971293 DOI: 10.1016/j.ijbiomac.2024.133670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 06/02/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
Microorganisms' ice-binding structures (IBS) are macromolecules with potential commercial value in agriculture, food technology, material technology, cryobiology, and medicine. Microbial ice-structuring or microbial ice-binding particles, with their multi-applications, are simple to use, effective in low amounts, non-toxic, and environmentally friendly. Due to their source and composition diversities, microbial ice-binding structures are gaining attention because they are useable in various conditions. Some microorganisms also produce structures with dual ice-nucleating and anti-freezing properties. Structures that promote ice formation (ice nucleating particles- INPs) act as ice nuclei, lowering the energy barrier between supercooled liquid and ice, causing ice crystals to form. In contrast, anti-freeze particles (AFPs) prevent ice formation and recrystallization through several mechanisms, including disturbing the formation of string hydrogen bonds amongst water molecules, melting already formed ice crystals, and preventing crystal formation by binding to specific sites. Knowledge of the type and function of microbial ice-binding structures lends fundamental insight for possible scaling the production of cheap, functional, and advanced microbial structure-inspired mimics and by-products. This review focuses on microbial ice-binding structures and their potential uses in the food, medicinal, environmental, and agricultural sectors.
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Affiliation(s)
- Mfoniso Peter Uko
- Faculty of Biological Science, Akwa-Ibom State University, Akwa-Ibom State, Uyo 1167, Nigeria
| | - Senyene Idorenyin Umana
- Faculty of Biological Science, Akwa-Ibom State University, Akwa-Ibom State, Uyo 1167, Nigeria; Department of Microbiology, Faculty of Michael Okpara of Agriculture, Umudike, Nigeria
| | - Ifiok Joseph Iwatt
- Center for Wetlands and Wastes Management Studies, Faculty of Agriculture, University of Uyo, Uyo, Nigeria
| | | | - Chiamaka Linda Mgbechidinma
- School of Life Sciences, Centre for Cell and Development Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; Department of Microbiology, University of Ibadan, Ibadan 200243, Nigeria
| | - Francisca Upekiema Adie
- Department of Microbiology, Faculty of Biological Sciences, Cross River State University of Technology, Calabar, Nigeria
| | - Otobong Donald Akan
- Faculty of Biological Science, Akwa-Ibom State University, Akwa-Ibom State, Uyo 1167, Nigeria; College of Food Science and Engineering, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China.
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4
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Kawai K, Shirakashi R. Water rotational relaxation time measurement by shortwave infrared micro spectroscopy(SWIR) at sub-zero temperatures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124707. [PMID: 38964024 DOI: 10.1016/j.saa.2024.124707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 05/17/2024] [Accepted: 06/24/2024] [Indexed: 07/06/2024]
Abstract
The shortwave infrared spectroscopy (SWIR) is the noble method which allows to evaluate the rotational relaxation time of water (RRTW) in a sample. Because SWIR requires the reference sample of pure water, the measurement temperature is limited only at above 0 °C. In this study, we expanded this temperature limitation of SWIR by using alternative reference solutions with freezing points below 0 °C, including sugar and glycerol solutions. The results showed that some reference sample solutions are useable for evaluating RRTW in samples below 0 °C. It was found that RRTW in solution measured by newly proposed SWIR agrees with RRTW measured by dielectric spectroscopy in 10% accuracy when it is shorter than 100psec.
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Affiliation(s)
- Kosei Kawai
- Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Japan.
| | - Ryo Shirakashi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Japan.
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McPartlon TJ, Osborne CT, Kramer JR. Glycosylated Polyhydroxyproline Is a Potent Antifreeze Molecule. Biomacromolecules 2024; 25:3325-3334. [PMID: 38775494 DOI: 10.1021/acs.biomac.3c01462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Molecules that inhibit the growth of ice crystals are highly desirable for applications in building materials, foods, and agriculture. Antifreezes are particularly essential in biomedicine for tissue banking, yet molecules currently in use have known toxic effects. Antifreeze glycoproteins have evolved naturally in polar fish species living in subzero climates, but practical issues with collection and purification have limited their commercial use. Here, we present a synthetic strategy using polymerization of amino acid N-carboxyanhydrides to produce polypeptide mimics of these potent natural antifreeze proteins. We investigated a set of mimics with varied structural properties and identified a glycopolypeptide with potent ice recrystallization inhibition properties. We optimized for molecular weight, characterized their conformations, and verified their cytocompatibility in a human cell line. Overall, we present a material that will have broad applications as a biocompatible antifreeze.
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Affiliation(s)
- Thomas J McPartlon
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, Utah 84112, United States
| | - Charles T Osborne
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jessica R Kramer
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, Utah 84112, United States
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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Yu M, Marquez-Curtis LA, Elliott JAW. Cryopreservation-induced delayed injury and cell-type-specific responses during the cryopreservation of endothelial cell monolayers. Cryobiology 2024; 115:104857. [PMID: 38350589 DOI: 10.1016/j.cryobiol.2024.104857] [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: 08/15/2023] [Revised: 01/26/2024] [Accepted: 02/01/2024] [Indexed: 02/15/2024]
Abstract
The cryopreservation of endothelial cell monolayers is an important step that bridges the cryopreservation of cells in suspension to that of tissues. Previous studies have identified clear distinctions in freezing mechanisms between cells in suspension and in monolayers, as well as developed novel protocols for monolayer cryopreservation. Recently, our group has shown that human umbilical vein endothelial cell (HUVEC) and porcine corneal endothelial cell (PCEC) monolayers grown on Rinzl plastic substrate can be cryopreserved in 5% dimethyl sulfoxide, 6% hydroxyethyl starch, and 2% chondroitin sulfate, following a slow-cooling protocol (-1 °C/min) with rapid plunge into liquid nitrogen from -40 °C. However, membrane integrity assessments were done immediately post thaw, which may result in an overestimation of cell viability due to possible delayed injury responses. Here, we show that for the optimal protocol condition of plunge at the -40 °C interrupt temperature, HUVEC and PCEC monolayers exhibited no significant immediate post-thaw injuries nor delayed injury responses during the 24-h post-thaw overnight culture period. HUVEC monolayers experienced no significant impact to their natural growth rate during the post-thaw culture, while PCEC monolayers experienced significantly higher growth than the unfrozen controls. The difference in the low-temperature responses between HUVEC and PCEC monolayers was further shown under high temperature plunge conditions. At these suboptimal plunge temperatures, HUVEC monolayers exhibited moderate immediate membrane injury but a pronounced delayed injury response during the 24-h post-thaw culture, while PCEC monolayers showed significant immediate membrane injury but no additional delayed injury response during the same period. Therefore, we provide further validation of our group's previously designed endothelial monolayer cryopreservation protocol for HUVEC and PCEC monolayers, and we identify several cell-type-specific responses to the freezing process.
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Affiliation(s)
- MingHan Yu
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Leah A Marquez-Curtis
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Janet A W Elliott
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 1C9, Canada.
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7
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Cao Y, Gao C, Yang L, Zhou P, Sun D. Molecular simulation on the interaction between trehalose and asymmetric lipid bilayer mimicking the membrane of human red blood cells. Cryobiology 2024; 115:104898. [PMID: 38663665 DOI: 10.1016/j.cryobiol.2024.104898] [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: 01/10/2024] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 05/05/2024]
Abstract
Trehalose is widely acknowledged for its ability to stabilize plasma membranes during dehydration. However, the exact mechanism by which trehalose interacts with lipid bilayers remains presently unclear. In this study, we conducted atomistic molecular dynamic simulations on asymmetric model bilayers that mimic the membrane of human red blood cells at various trehalose and water contents. We considered three different hydration levels mimicking the full hydration to desiccation scenarios. Results indicate that the asymmetric distribution of lipids did not significantly influence the computed structural characteristics at full and low hydration. At dehydration, however, the order parameter obtained from the symmetric bilayer is significantly higher compared to those obtained from asymmetric ones. Analysis of hydrogen bonds revealed that the protective ability of trehalose is well described by the water replacement hypothesis at full and low hydration, while at dehydration other interaction mechanisms associated with trehalose exclusion from the bilayer may involve. In addition, we found that trehalose exclusion is not attributed to sugar saturation but rather to the reduction in hydration levels. It can be concluded that the protective effect of trehalose is not only related to the hydration level of the bilayer, but also closely tied to the asymmetric distribution of lipids within each leaflet.
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Affiliation(s)
- Yu Cao
- Department of Refrigeration & Cryogenics Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Cai Gao
- Department of Refrigeration & Cryogenics Engineering, Hefei University of Technology, Hefei, 230009, China.
| | - Lei Yang
- Department of Refrigeration & Cryogenics Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Pei Zhou
- Department of Refrigeration & Cryogenics Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Dongfang Sun
- Department of Refrigeration & Cryogenics Engineering, Hefei University of Technology, Hefei, 230009, China.
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8
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Spinelli C, Ghionzoli M, Sahli LI, Visintainer S, Guglielmo C, Cordola C, Lapi S, Biagi E, Pucci A, Morganti R, Ferrari SM, Antonelli A. Cryopreserved Thyroid Tissue Autotransplant in Pediatric Age Patients: A Feasibility Study and Literature Review. Cancers (Basel) 2024; 16:2112. [PMID: 38893231 PMCID: PMC11171235 DOI: 10.3390/cancers16112112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/23/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND AND AIMS This paper aims to study an alternative solution to hormonal replacement therapy in specific groups of patients who underwent thyroidectomy during childhood or adulthood. After cryopreservation, thyroid autotransplantation could be an alternative solution which would allow us to use the ability of the thyroid tissue of producing hormones according to the physiological needs of the body. MATERIALS AND METHODS A feasibility study about the effects of the most modern cryopreservation techniques on the structural and functional integrity of the follicular cells of the thyroid tissue has been carried out. Patients who could benefit from the treatment have been found for both autotransplant techniques. Additionally, a literature review has been conducted. RESULTS The histological analysis has shown that cryopreservation does not alter the original architecture, and the culture examination that cell viability is successfully preserved. Moreover, both thyroid autotransplantation studies on animals and those on humans that were found in the literature have shown good results regarding the viability and functionality of the transplant. CONCLUSIONS The viability of cryopreserved thyroid tissue found in this study is encouraging. Further studies to evaluate the levels of FT3, FT4 and thyroglobulin in thyroid tissue after cryopreservation are needed to verify that the secretory properties of the thyrocytes have been maintained intact. Furthermore, autotransplanted cases found in the literature do not have a long-term follow-up.
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Affiliation(s)
- Claudio Spinelli
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Marco Ghionzoli
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Linda Idrissi Sahli
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Silvia Visintainer
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Carla Guglielmo
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Chiara Cordola
- Pediatric Surgery Unit, Maternity and Children Department, University of Pisa, 56124 Pisa, Italy
| | - Simone Lapi
- Biobank Division, University Hospital of Pisa, 56124 Pisa, Italy
| | - Elisa Biagi
- Biobank Division, University Hospital of Pisa, 56124 Pisa, Italy
| | - Angela Pucci
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56124 Pisa, Italy
| | - Riccardo Morganti
- Section of Statistics, University Hospital of Pisa, 56124 Pisa, Italy
| | | | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, 56124 Pisa, Italy
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9
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Choudhery MS, Arif T, Mahmood R, Harris DT. CAR-T-Cell-Based Cancer Immunotherapies: Potentials, Limitations, and Future Prospects. J Clin Med 2024; 13:3202. [PMID: 38892913 PMCID: PMC11172642 DOI: 10.3390/jcm13113202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Cancer encompasses various elements occurring at the cellular and genetic levels, necessitating an immunotherapy capable of efficiently addressing both aspects. T cells can combat cancer cells by specifically recognizing antigens on them. This innate capability of T cells has been used to develop cellular immunotherapies, but most of them can only target antigens through major histocompatibility complexes (MHCs). New gene-editing techniques such as clustered regularly interspaced short palindromic repeat (CRISPR)-associated protein 9 (CRISPR-cas9) can precisely edit the DNA sequences. CRISPR-cas9 has made it possible to generate genetically engineered chimeric antigen receptors (CARs) that can overcome the problems associated with old immunotherapies. In chimeric antigen receptor T (CAR-T) cell therapy, the patient's T cells are isolated and genetically modified to exhibit synthetic CAR(s). CAR-T cell treatment has shown remarkably positive clinical outcomes in cancers of various types. Nevertheless, there are various challenges that reduce CAR-T effectiveness in solid tumors. It is required to address these challenges in order to make CAR-T cell therapy a better and safer option. Combining CAR-T treatment with other immunotherapies that target multiple antigens has shown positive outcomes. Moreover, recently generated Boolean logic-gated advanced CARs along with artificial intelligence has expanded its potential to treat solid tumors in addition to blood cancers. This review aims to describe the structure, types, and various methods used to develop CAR-T cells. The clinical applications of CAR-T cells in hematological malignancies and solid tumours have been described in detail. In addition, this discussion has addressed the limitations associated with CAR-T cells, explored potential strategies to mitigate CAR-T-related toxicities, and delved into future perspectives.
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Affiliation(s)
- Mahmood S. Choudhery
- Department of Human Genetics & Molecular Biology, University of Health Sciences, Lahore 54600, Pakistan;
| | - Taqdees Arif
- Department of Human Genetics & Molecular Biology, University of Health Sciences, Lahore 54600, Pakistan;
| | - Ruhma Mahmood
- Jinnah Hospital, Allama Iqbal Medical College, Lahore 54700, Pakistan;
| | - David T. Harris
- Department of Immunobiology, College of Medicine, University of Arizona Health Sciences Biorepository, The University of Arizona, Tucson, AZ 85724-5221, USA;
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Rusconi G, Cremona M, Gallazzi M, Mariotta L, Gola M, Gandolfi E, Malacco M, Soldati G. Good Manufacturing Practice-Compliant Cryopreserved and Thawed Native Adipose Tissue Ready for Fat Grafting. J Clin Med 2024; 13:3028. [PMID: 38892739 PMCID: PMC11172459 DOI: 10.3390/jcm13113028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Background: As adipose tissue-derived mesenchymal stem cells are becoming the tool of choice for many clinical applications; standardized cryopreservation protocols are necessary to deliver high-quality samples. For this purpose, the cryopreservation and thawing of native adipose tissue under GMP conditions could represent an extremely useful and powerful tool for the direct reinfusion of the tissue, and consequently, of its stromal vascular fraction. Methods: In this study, 19 samples of adipose tissue were cryopreserved and characterized before and after storage in liquid nitrogen vapors. Of these 19 samples, 14 were processed in research and 5 in a GMP-compliant environment. Storage with and without cryopreservation medium was also evaluated. After one week to three months of storage, samples were thawed, washed, enzymatically digested, and characterized with flow cytometry. Results: The results show that there is a loss of nearly 50% of total nucleated cells during the cryopreservation/thawing process. Non-GMP and GMP samples are comparable for all parameters analyzed. This study also allowed us to exclude the cryopreservation of adipose tissue without any cryopreservation medium. Conclusions: The data shown in this work are consistent with the idea that native adipose tissue, if properly processed and controlled, could be a useful source of cells for regenerative medicine, keeping in mind that there is a clear difference in the quality between fresh and thawed samples.
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Affiliation(s)
- Giulio Rusconi
- Swiss Stem Cell Foundation, 6900 Lugano, Switzerland (M.C.)
| | | | | | - Luca Mariotta
- Swiss Stem Cell Foundation, 6900 Lugano, Switzerland (M.C.)
- Swiss Stem Cells Biotech AG, 8008 Zurich, Switzerland
| | - Mauro Gola
- Swiss Stem Cell Foundation, 6900 Lugano, Switzerland (M.C.)
| | - Eugenio Gandolfi
- Clinica Sant’Anna, Swiss Medical Network, 6924 Sorengo, Switzerland
| | - Matteo Malacco
- Clinica Sant’Anna, Swiss Medical Network, 6924 Sorengo, Switzerland
| | - Gianni Soldati
- Swiss Stem Cell Foundation, 6900 Lugano, Switzerland (M.C.)
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11
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Mahanta DD, Brown DR, Webber T, Pezzotti S, Schwaab G, Han S, Shell MS, Havenith M. Bridging the Gap in Cryopreservation Mechanism: Unraveling the Interplay between Structure, Dynamics, and Thermodynamics in Cryoprotectant Aqueous Solutions. J Phys Chem B 2024; 128:3720-3731. [PMID: 38584393 DOI: 10.1021/acs.jpcb.4c00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Cryoprotectants play a crucial role in preserving biological material, ensuring their viability during storage and facilitating crucial applications such as the conservation of medical compounds, tissues, and organs for transplantation. However, the precise mechanism by which cryoprotectants modulate the thermodynamic properties of water to impede the formation and growth of ice crystals, thus preventing long-term damage, remains elusive. This is evident in the use of empirically optimized recipes for mixtures that typically contain DMSO, glycerol, and various sugar constituents. Here, we use terahertz calorimetry, Overhauser nuclear polarization, and molecular dynamics simulations to show that DMSO exhibits a robust structuring effect on water around its methyl groups, reaching a maximum at a DMSO mole fraction of XDMSO = 0.33. In contrast, glycerol exerts a smaller water-structuring effect, even at higher concentrations (Scheme 1). These results potentially suggest that the wrapped water around DMSO's methyl group, which can be evicted upon ligand binding, may render DMSO a more surface-active cryoprotectant than glycerol, while glycerol may participate more as a viscogen that acts on the entire sample. These findings shed light on the molecular intricacies of cryoprotectant solvation behavior and have potentially significant implications for optimizing cryopreservation protocols.
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Affiliation(s)
- Debasish Das Mahanta
- Lehrstuhl für Physikalische Chemie II, Ruhr-Universität Bochum, Bochum 44780, Germany
- Department of Physics, Technische Universität (TU) Dortmund, Dortmund 44227, Germany
| | - Dennis Robinson Brown
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080, United States
| | - Thomas Webber
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080, United States
| | - Simone Pezzotti
- Lehrstuhl für Physikalische Chemie II, Ruhr-Universität Bochum, Bochum 44780, Germany
| | - Gerhard Schwaab
- Lehrstuhl für Physikalische Chemie II, Ruhr-Universität Bochum, Bochum 44780, Germany
| | - Songi Han
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080, United States
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
| | - M Scott Shell
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106-5080, United States
| | - Martina Havenith
- Lehrstuhl für Physikalische Chemie II, Ruhr-Universität Bochum, Bochum 44780, Germany
- Department of Physics, Technische Universität (TU) Dortmund, Dortmund 44227, Germany
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12
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Deleray AC, Saini SS, Wallberg AC, Kramer JR. Synthetic Antifreeze Glycoproteins with Potent Ice-Binding Activity. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:3424-3434. [PMID: 38699199 PMCID: PMC11064932 DOI: 10.1021/acs.chemmater.4c00266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Antifreeze glycoproteins (AFGPs) are produced by extremophiles to defend against tissue damage in freezing climates. Cumbersome isolation from polar fish has limited probing AFGP molecular mechanisms of action and limited development of bioinspired cryoprotectants for application in agriculture, foods, coatings, and biomedicine. Here, we present a rapid, scalable, and tunable route to synthetic AFGPs (sAFGPs) using N-carboxyanhydride polymerization. Our materials are the first mimics to harness the molecular size, chemical motifs, and long-range conformation of native AFGPs. We found that ice-binding activity increases with chain length, Ala is a key residue, and the native protein sequence is not required. The glycan structure had only minor effects, and all glycans examined displayed antifreeze activity. The sAFGPs are biodegradable, nontoxic, internalized into endocytosing cells, and bystanders in cryopreservation of human red blood cells. Overall, our sAFGPs functioned as surrogates for bona fide AFGPs, solving a long-standing challenge in accessing natural antifreeze materials.
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Affiliation(s)
- Anna C Deleray
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Simranpreet S Saini
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Alexander C Wallberg
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jessica R Kramer
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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13
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Pal VK, Kannan K. Stability of volatile organic compound metabolites in urine at various storage temperatures and freeze-thaw cycles for 8 months. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123493. [PMID: 38316251 PMCID: PMC10939821 DOI: 10.1016/j.envpol.2024.123493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/15/2024] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
The urinary concentrations of mercapturic acid metabolites of volatile organic compounds (VOCs) have been used as biomarkers of human exposure to this class of chemicals. However, long-term stability of these VOC metabolites (VOCMs) in urine at various storage conditions such as temperature, duration, and freeze-thaw cycles is not known. In this study, spot urine samples collected from three volunteers, stored at 22 °C (room temperature: RT), 4 °C (refrigerator) and -20 °C (freezer) for up to 240 days were analyzed at weekly to monthly interval for a total of 19 time points. Samples stored at 4 °C and -20 °C underwent 18 freeze-thaw cycles at RT for 30 min at each of the time points. Among 38 VOCMs analyzed, up to 18 metabolites were detected at concentrations above their respective detection limits on Day 0 (baseline concentration), and the concentrations of several VOCMs declined with the storage duration. Eight to ten VOCMs were lost completely within 240 days of storage at RT, compared to between two and five at 4 °C and between one and seven at -20 °C. The loss rate varied depending on the sample, storage temperature, VOCM, and number of freeze-thaw cycles. Storage of urine at RT led to a rapid loss of VOCMs in comparison to that stored at 4 °C or -20 °C. Among VOCMs measured, CEMA, SBMA, GAMA, DHBMA, AMCC, TCVMA, and HPMMA were lost more rapidly than the other metabolites. CMEMA, a major VOCM found in all three urines at baseline, exhibited a rapid loss in those of two volunteers but not of the other volunteer, suggesting sample to sample variation in lose rates. Freeze-thaw cycles considerably affected VOCM concentrations in urines stored at 4 °C or -20 °C. It is recommended that urine samples are analyzed for VOCMs within a couple of months of collection and stored at temperatures below -20 °C, with minimal or no freeze-thaw cycles. This study highlights the need for appropriate storage conditions to maintain the integrity of samples for biomonitoring studies.
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Affiliation(s)
- Vineet Kumar Pal
- Wadsworth Center, New York State Department of Health, Empire State Plaza, Albany, NY, 12237, United States; Department of Pediatrics and Environmental Medicine, New York University, New York, 10016, United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, Albany, NY, 12237, United States; Department of Environmental Health Sciences, School of Public Health, University at Albany, State University of New York, Albany, NY, 12237, United States; Department of Pediatrics and Environmental Medicine, New York University, New York, 10016, United States.
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14
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Awad MN, Brown SJ, Abraham AN, Sezer D, Han Q, Wang X, Le TC, Elbourne A, Bryant G, Greaves TL, Bryant SJ. Biophysical Characterization and Cryopreservation of Mammalian Cells Using Ionic Liquids. J Phys Chem B 2024; 128:2504-2515. [PMID: 38416751 DOI: 10.1021/acs.jpcb.3c06797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Ionic liquids (ILs) are a diverse class of solvents which can be selected for task-specific properties, making them attractive alternatives to traditional solvents. To tailor ILs for specific biological applications, it is necessary to understand the structure-property relationships of ILs and their interactions with cells. Here, a selection of carboxylate anion-based ILs were investigated as cryoprotectants, which are compounds added to cells before freezing to mitigate lethal freezing damage. The cytotoxicity, cell permeability, thermal behavior, and cryoprotective efficacy of the ILs were assessed with two model mammalian cell lines. We found that the biophysical interactions, including permeability of the ILs, were influenced by considering the IL pair together, rather than as single species acting independently. All of the ILs tested had high cytotoxicity, but ethylammonium acetate demonstrated good cryoprotective efficacy for both cell types tested. These results demonstrate that despite toxicity, ILs may be suitable for certain biological applications. It also demonstrates that more research is required to understand the contribution of ion pairs to structure-property relationships and that knowing the behavior of a single ionic species will not necessarily predict its behavior as part of an IL.
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Affiliation(s)
- Miyah N Awad
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Stuart J Brown
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Amanda N Abraham
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics, RMIT University, Melbourne, Victoria 3001, Australia
| | - Dilek Sezer
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Qi Han
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Xiaoying Wang
- School of Engineering, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
- Digital Services, Deakin University, Melbourne, Victoria 3008, Australia
| | - Tu C Le
- School of Engineering, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Aaron Elbourne
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Gary Bryant
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Tamar L Greaves
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Saffron J Bryant
- School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
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15
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Guerreiro BM, Concórdio-Reis P, Pericão H, Martins F, Moppert X, Guézennec J, Lima JC, Silva JC, Freitas F. Elevated fucose content enhances the cryoprotective performance of anionic polysaccharides. Int J Biol Macromol 2024; 261:129577. [PMID: 38246459 DOI: 10.1016/j.ijbiomac.2024.129577] [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: 08/22/2023] [Revised: 01/04/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024]
Abstract
Biological cryopreservation often involves using a cryoprotective agent (CPA) to mitigate lethal physical stressors cells endure during freezing and thawing, but effective CPA concentrations are cytotoxic. Hence, natural polysaccharides have been studied as biocompatible alternatives. Here, a subset of 26 natural polysaccharides of various chemical composition was probed for their potential in enhancing the metabolic post-thaw viability (PTV) of cryopreserved Vero cells. The best performing cryoprotective polysaccharides contained significant fucose amounts, resulting in average PTV 2.8-fold (up to 3.1-fold) compared to 0.8-fold and 2.2-fold for all non-cryoprotective and cryoprotective polysaccharides, respectively, outperforming the optimized commercial CryoStor™ CS5 formulation (2.6-fold). Stoichiometrically, a balance between fucose (18-35.7 mol%), uronic acids (UA) (13.5-26 mol%) and high molecular weight (MW > 1 MDa) generated optimal PTV. Principal component analysis (PCA) revealed that fucose enhances cell survival by a charge-independent, MW-scaling mechanism (PC1), drastically different from the charge-dominated ice growth disruption of UA (PC2). Its neutral nature and unique properties distinguishable from other neutral monomers suggest fucose may play a passive role in conformational adaptability of polysaccharide to ice growth inhibition, or an active role in cell membrane stabilization through binding. Ultimately, fucose-rich anionic polysaccharides may indulge in polymer-ice and polymer-cell interactions that actively disrupt ice and minimize lethal volumetric fluctuations due to a balanced hydrophobic-hydrophilic character. Our research showed the critical role neutral fucose plays in enhancing cellular cryopreservation outcomes, disputing previous assumptions of polyanionicity being the sole governing predictor of cryoprotection.
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Affiliation(s)
- Bruno M Guerreiro
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Patrícia Concórdio-Reis
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Helena Pericão
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Filipa Martins
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Xavier Moppert
- Pacific Biotech SAS, BP 140 289, 98 701 Arue, Tahiti, French Polynesia.
| | - Jean Guézennec
- AiMB (Advices in Marine Biotechnology), 17 Rue d'Ouessant, 29280 Plouzané, France
| | - João C Lima
- LAQV-REQUIMTE, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Jorge C Silva
- CENIMAT/I3N, Department of Physics, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
| | - Filomena Freitas
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
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16
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Lomba L, García CB, Benito L, Sangüesa E, Santander S, Zuriaga E. Advances in Cryopreservatives: Exploring Safer Alternatives. ACS Biomater Sci Eng 2024; 10:178-190. [PMID: 38141007 DOI: 10.1021/acsbiomaterials.3c00859] [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] [Indexed: 12/24/2023]
Abstract
Cryopreservation of cells, tissues, and organs is widely used in the biomedical and research world. There are different cryopreservatives that are used for this process; however, many of them, such as DMSO, are used despite the problems they present, mainly due to the toxicity it presents to certain types of samples. The aim of this Review is to highlight the different types of substances used in the cryopreservation process. It has been shown that some of these substances are well-known, as in the case of the families of alcohols, sugars, sulfoxides, etc. However, in recent years, other compounds have appeared, such as ionic liquids, deep eutectic solvents, or certain polymers, which open the door to new cryopreservation methods and are also less toxic to frozen samples.
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Affiliation(s)
- Laura Lomba
- Facultad de Ciencias de la Salud, Universidad San Jorge. Campus Universitario, Autov A23 km 299, 50830 Villanueva de Gállego, Zaragoza, Spain
| | - Cristina B García
- Facultad de Ciencias de la Salud, Universidad San Jorge. Campus Universitario, Autov A23 km 299, 50830 Villanueva de Gállego, Zaragoza, Spain
| | - Lucía Benito
- Facultad de Ciencias de la Salud, Universidad San Jorge. Campus Universitario, Autov A23 km 299, 50830 Villanueva de Gállego, Zaragoza, Spain
| | - Estela Sangüesa
- Facultad de Ciencias de la Salud, Universidad San Jorge. Campus Universitario, Autov A23 km 299, 50830 Villanueva de Gállego, Zaragoza, Spain
| | - Sonia Santander
- Faculty of Health and Sports Sciences, University of Zaragoza, Campus of Huesca, 22002 Huesca, Spain
| | - Estefanía Zuriaga
- Facultad de Ciencias de la Salud, Universidad San Jorge. Campus Universitario, Autov A23 km 299, 50830 Villanueva de Gállego, Zaragoza, Spain
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17
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Lee SG, Kim J, Seok J, Kim MW, Rhee J, Song GE, Park S, Lee S, Jeong Y, Chung HM, Kim CY. Development of heart organoid cryopreservation method through Fe 3 O 4 nanoparticles based nanowarming system. Biotechnol J 2024; 19:e2300311. [PMID: 37953523 DOI: 10.1002/biot.202300311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/25/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
Beyond single cell two-dimensional (2D) culture, research on organoids that can mimic human organs is rapidly developing. However, there are still problems in commercialization and joint research using organoids due to the lack of technology to safely store organoids. Since organoids are 3D complex structures with a certain size (0.1-5 mm) beyond the size of cells, the conventional cell-level cryopreservation method using cryoprotectant (CPA) cannot overcome the damage caused by volume change due to osmotic pressure difference and ice nucleation. Herein, we attempted to solve such limitations by applying a nanowarming system using CPA with high cell permeability and Fe3 O4 nanoparticles. By performing beat rate measurement, histological analysis, contractility analysis, and multi-electrode array, it was verified that the developed method could significantly improve functional recovery and survival of heart organoids after freezing and thawing. In this study, we demonstrated a successful organoid cryopreservation method based on a Fe3 O4 nanowarming system. The developed technology will provide clues to the field of tissue cryopreservation and spur the application of organoids.
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Affiliation(s)
- Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Gwangjin-Gu, Seoul, Republic of Korea
| | - Jin Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jin Seok
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Min Woo Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jooeon Rhee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Gyeong-Eun Song
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Shinhye Park
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Suemin Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Youngin Jeong
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hyung Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Gwangjin-Gu, Seoul, Republic of Korea
- Miraecell Bio Co. Ltd., Seoul, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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18
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Grosha J, Cho JH, Pasley S, Kilbride P, Zylberberg C, Rolle MW. Engineered Test Tissues: A Model for Quantifying the Effects of Cryopreservation Parameters. ACS Biomater Sci Eng 2023; 9:6198-6207. [PMID: 37802599 DOI: 10.1021/acsbiomaterials.3c00752] [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] [Indexed: 10/10/2023]
Abstract
Engineered tissues are showing promise as implants to repair or replace damaged tissues in vivo or as in vitro tools to discover new therapies. A major challenge of the tissue engineering field is the sample preservation and storage until their transport and desired use. To successfully cryopreserve tissue, its viability, structure, and function must be retained post-thaw. The outcome of cryopreservation is impacted by several parameters, including the cryopreserving agent (CPA) utilized, the cooling rate, and the storage temperature. Although a number of CPAs are commercially available for cell cryopreservation, there are few CPAs designed specifically for tissue cryostorage and recovery. In this study, we present a flexible, relatively high-throughput method that utilizes engineered tissue rings as test tissues for screening the commercially available CPAs and cryopreservation parameters. Engineered test tissues can be fabricated with low batch-to-batch variability and characteristic morphology due to their endogenous extracellular matrix, and they have mechanical properties and a ring format suitable for testing with standard methods. The tissues were grown for 7 days in standard 48-well plates and cryopreserved in standard cryovials. The method allowed for the quantification of metabolic recovery, tissue apoptosis/necrosis, morphology, and mechanical properties. In addition to establishing the method, we tested different CPA formulations, freezing rates, and freezing points. Our proposed method enables timely preliminary screening of CPA formulations and cryopreservation parameters that may improve the storage of engineered tissues.
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Affiliation(s)
- Jonian Grosha
- Worcester Polytechnic Institute, Worcester, Massachusetts 01609, United States
| | - Jun-Hung Cho
- Akron Biotech, Boca Raton, Florida 33487, United States
| | | | | | | | - Marsha W Rolle
- Worcester Polytechnic Institute, Worcester, Massachusetts 01609, United States
- The Roux Institute, Northeastern University, Portland, Maine 04101, United States
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19
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Xiang J, Mlambo R, Shaw I, Seid Y, Shah H, He Y, Kpegah JKSK, Tan S, Zhou W, He B. Cryopreservation of bioflavonoid-rich plant sources and bioflavonoid-microcapsules: emerging technologies for preserving bioactivity and enhancing nutraceutical applications. Front Nutr 2023; 10:1232129. [PMID: 37781117 PMCID: PMC10538722 DOI: 10.3389/fnut.2023.1232129] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/25/2023] [Indexed: 10/03/2023] Open
Abstract
Bioflavonoids are natural polyphenolic secondary metabolites that are medicinal. These compounds possess antitumor, cardioprotective, anti-inflammatory, antimicrobial, antiviral, and anti-psoriasis properties to mention a few. Plant species that contain bioflavonoids should be preserved as such. Also, the bioactivity of the bioflavonoids as neutraceutical compounds is compromised following extraction due to their sensitivity to environmental factors like light, pH, and temperature. In other words, the bioflavonoids' shelf-life is affected. Scientists noticed that bioflavonoids have low solubility properties, poor absorption, and low bioavailability following consumption. Researchers came up with methods to encapsulate bioflavonoids in order to circumvent the challenges above and also to mask the unpleasant order these chemicals may have. Besides, scientists cryopreserve plant species that contain bioflavonoids. In this review, we discuss cryopreservation and bioflavonoid microencapsulation focusing mainly on vitrification, slow freezing, and freeze-drying microencapsulation techniques. In addition, we highlight bioflavonoid extraction techniques, medicinal properties, challenges, and future perspectives of cryopreservation and microencapsulation of bioflavonoids. Regardless of the uniqueness of cryopreservation and microencapsulation as methods to preserve bioflavonoid sources and bioflavonoids' bioactivity, there are challenges reported. Freeze-drying technology is costly. Cryoprotectants damage the integrity of plant cells, to say the least. Researchers are working very hard to overcome these challenges. Encapsulating bioflavonoids via coaxial electrospray and then cryopreserving the micro/nanocapsules produced can be very interesting.
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Affiliation(s)
- Jia Xiang
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Ronald Mlambo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Ibrahim Shaw
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Yimer Seid
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Hamid Shah
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Yongju He
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, China
| | - Julius K S K Kpegah
- Department of Plastic Surgery, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Songwen Tan
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Wenhu Zhou
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Binsheng He
- Academician Workstation, Changsha Medical University, Changsha, China
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20
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Heumüller-Klug S, Maurer K, Tapia-Laliena MÁ, Sticht C, Christmann A, Mörz H, Khasanov R, Wink E, Schulte S, Greffrath W, Treede RD, Wessel LM, Schäfer KH. Impact of cryopreservation on viability, gene expression and function of enteric nervous system derived neurospheres. Front Cell Dev Biol 2023; 11:1196472. [PMID: 37377739 PMCID: PMC10291272 DOI: 10.3389/fcell.2023.1196472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction: Impairment of both the central and peripheral nervous system is a major cause of mortality and disability. It varies from an affection of the brain to various types of enteric dysganglionosis. Congenital enteric dysganglionosis is characterized by the local absence of intrinsic innervation due to deficits in either migration, proliferation or differentiation of neural stem cells. Despite surgery, children's quality of life is reduced. Neural stem cell transplantation seems a promising therapeutic approach, requiring huge amounts of cells and multiple approaches to fully colonize the diseased areas completely. A combination of successful expansion and storage of neural stem cells is needed until a sufficient amount of cells is generated. This must be combined with suitable cell transplantation strategies, that cover all the area affected. Cryopreservation provides the possibility to store cells for long time, unfortunately with side effects, i.e., upon vitality. Methods: In this study we investigate the impact of different freezing and thawing protocols (M1-M4) upon enteric neural stem cell survival, protein and gene expression, and cell function. Results: Freezing enteric nervous system derived neurospheres (ENSdN) following slow-freezing protocols (M1-3) resulted in higher survival rates than flash-freezing (M4). RNA expression profiles were least affected by freezing protocols M1/2, whereas the protein expression of ENSdN remained unchanged after treatment with protocol M1 only. Cells treated with the most promising freezing protocol (M1, slow freezing in fetal calf serum plus 10% DMSO) were subsequently investigated using single-cell calcium imaging. Freezing of ENSdN did not alter the increase in intracellular calcium in response to a specific set of stimuli. Single cells could be assigned to functional subgroups according to response patterns and a significant shift towards cells responding to nicotine was observed after freezing. Discussion: The results demonstrate that cryopreservation of ENSdN is possible with reduced viability, only slight changes in protein/gene expression patterns and without an impact on the neuronal function of different enteric nervous system cell subtypes, with the exception of a subtle upregulation of cells expressing nicotinergic acetylcholine receptors. In summary, cryopreservation presents a good method to store sufficient amounts of enteric neural stem cells without neuronal impairment, in order to enable subsequent transplantation of cells into compromised tissues.
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Affiliation(s)
- Sabine Heumüller-Klug
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Kristina Maurer
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - María Á. Tapia-Laliena
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Carsten Sticht
- Medical Research Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Anne Christmann
- AGENS, University of Applied Sciences Kaiserslautern Campus Zweibrücken, Kaiserslautern, Germany
| | - Handan Mörz
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Rasul Khasanov
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Elvira Wink
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Steven Schulte
- AGENS, University of Applied Sciences Kaiserslautern Campus Zweibrücken, Kaiserslautern, Germany
| | - Wolfgang Greffrath
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Lucas M. Wessel
- Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Karl-Herbert Schäfer
- AGENS, University of Applied Sciences Kaiserslautern Campus Zweibrücken, Kaiserslautern, Germany
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21
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Parihar A, Kumar A, Panda U, Khan R, Parihar DS, Khan R. Cryopreservation: A Comprehensive Overview, Challenges, and Future Perspectives. Adv Biol (Weinh) 2023; 7:e2200285. [PMID: 36755194 DOI: 10.1002/adbi.202200285] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/05/2023] [Indexed: 02/10/2023]
Abstract
Cryopreservation is the most prevalent method of long-term cell preservation. Effective cell cryopreservation depends on freezing, adequate storage, and correct thawing techniques. Recent advances in cryopreservation techniques minimize the cellular damage which occurs while processing samples. This article focuses on the fundamentals of cryopreservation techniques and how they can be implemented in a variety of clinical settings. The article presents a brief description of each of the standard cryopreservation procedures, such as slow freezing and vitrification. Alongside that, the membrane permeating and nonpermeating cryoprotectants are briefly discussed, along with current advancements in the field of cryopreservation and variables influencing the cryopreservation process. The diminution of cryoinjury incurred by the cell via the resuscitation process will also be highlighted. In the end application of cryopreservation techniques in many fields, with a special emphasis on stem cell preservation techniques and current advancements presented. Furthermore, the challenges while implementing cryopreservation and the futuristic scope of the fields are illustrated herein. The content of this review sheds light on various ways to enhance the output of the cell preservation process and minimize cryoinjury while improving cell revival.
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Affiliation(s)
- Arpana Parihar
- Industrial Waste Utilization, Nano and Biomaterials, CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
| | - Avinash Kumar
- Department of Mechanical Engineering, Indian Institute of Information Technology, Design & Manufacturing (IIITD&M), Kancheepuram, 600127, India
| | - Udwesh Panda
- Department of Mechanical Engineering, Indian Institute of Information Technology, Design & Manufacturing (IIITD&M), Kancheepuram, 600127, India
| | - Rukhsar Khan
- Department of Biosciences, Barkatullah University, Bhopal, Madhya Pradesh, 462026, India
| | | | - Raju Khan
- Industrial Waste Utilization, Nano and Biomaterials, CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
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22
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Mutsenko V, Anastassopoulos E, Zaragotas D, Simaioforidou A, Tarusin D, Lauterboeck L, Sydykov B, Brunotte R, Brunotte K, Rozanski C, Petrenko AY, Braslavsky I, Glasmacher B, Gryshkov O. Monitoring of freezing patterns within 3D collagen-hydroxyapatite scaffolds using infrared thermography. Cryobiology 2023:S0011-2240(23)00007-X. [PMID: 37062517 DOI: 10.1016/j.cryobiol.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/02/2023] [Accepted: 02/05/2023] [Indexed: 04/18/2023]
Abstract
The importance of cryopreservation in tissue engineering is unceasingly increasing. Preparation, cryopreservation, and storage of tissue-engineered constructs (TECs) at an on-site location offer a convenient way for their clinical application and commercialization. Partial freezing initiated at high sub-zero temperatures using ice-nucleating agents (INAs) has recently been applied in organ cryopreservation. It is anticipated that this freezing technique may be efficient for the preservation of both scaffold mechanical properties and cell viability of TECs. Infrared thermography is an instrumental method to monitor INAs-mediated freezing of various biological entities. In this paper, porous collagen-hydroxyapatite (HAP) scaffolds were fabricated and characterized as model TECs, whereas infrared thermography was proposed as a method for monitoring the crystallization-related events on their partial freezing down to -25 °C. Intra- and interscaffold latent heat transmission were descriptively evaluated. Nucleation, freezing points as well as the degree of supercooling and duration of crystallization were calculated based on inspection of respective thermographic curves. Special consideration was given to the cryoprotective agent (CPA) composition (Snomax®, crude leaf extract from Hippophae rhamnoides, dimethyl sulfoxide (Me2SO) and recombinant type-III antifreeze protein (AFP)) and freezing conditions ('in air' or 'in bulk CPA'). For CPAs without ice nucleation activity, thermographic measurements demonstrated that the supercooling was significantly milder in the case of scaffolds present in a CPA solution compared to that without them. This parameter (ΔT, °C) altered with the following tendency: 10 Me2SO (2.90 ± 0.54 ('in air') vs. 7.71 ± 0.43 ('in bulk CPA', P < 0.0001)) and recombinant type-III AFP, 0.5 mg/ml (2.65 ± 0.59 ('in air') vs. 7.68 ± 0.34 ('in bulk CPA', P < 0.0001)). At the same time, in CPA solutions with ice nucleation activity the least degree of supercooling and the longest crystallization duration (Δt, min) for scaffolds frozen 'in air' were documented for crude leaf homogenate (CLH) from Hippophae rhamnoides (1.57 ± 0.37 °C and 21.86 ± 2.93 min compared to Snomax, 5 μg/ml (2.14 ± 0.33 °C and 23.09 ± 0.05), respectively). The paper offers evidence that infrared thermography provides insightful information for monitoring partial freezing events in TECs when using different freezing containers, CPAs and conditions. This may further TEC-specific cryopreservation and optimization of CPA compositions with slow-nucleating properties.
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Affiliation(s)
- Vitalii Mutsenko
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany; Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.
| | | | - Dimitris Zaragotas
- Department of Agricultural Engineering Technologists, TEI Thessaly, Larissa, Greece
| | | | - Dmytro Tarusin
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
| | - Lothar Lauterboeck
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany; Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Bulat Sydykov
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany
| | - Ricarda Brunotte
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany
| | - Kai Brunotte
- Institute of Forming Technology and Forming Machines, Leibniz University Hannover, Garbsen, Germany
| | - Corinna Rozanski
- Institute of Building Materials Science, Leibniz University Hannover, Hannover, Germany
| | - Alexander Y Petrenko
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
| | - Ido Braslavsky
- The Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Birgit Glasmacher
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany; Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Oleksandr Gryshkov
- Institute for Multiphase Processes, Leibniz University Hannover, Garbsen, Germany; Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
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23
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Safrina A, Anita N, Jusuf AA, Syaidah R, Saoemi HA. Bax/Bcl-2 Expression Ratio Analysis of Rat Ovary Vitrified with Date Juice Concentrate as a Natural Extracellular Cryoprotectant. J Hum Reprod Sci 2023; 16:106-113. [PMID: 37547095 PMCID: PMC10404014 DOI: 10.4103/jhrs.jhrs_29_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 08/08/2023] Open
Abstract
Background The use of extremely low temperatures in vitrification is known to cause cryoinjury so that it can trigger the activation of the intrinsic apoptotic pathway, which can damage the structural integrity of the pre-antral follicle. Based on that, it is necessary to use an appropriate cryoprotectant to protect the preserved cell. Aims This study aimed to identify the potential use of date juice concentrate (DJC) as a natural extracellular cryoprotectant to suppress the rate of apoptosis after vitrification. Settings and Design This experimental research uses 24 samples of ovarian rats. Rats were fed and drank an ad libitum. Materials and Methods Ovaries were isolated in the proestrus phase, then processed into slides for immunohistochemistry (IHC) staining using anti-Bax and anti-Bcl-2 antibodies. IHC results were evaluated for the brown colour using ImageJ IHC Profiler. The results were analysed as an optical density and displayed in the Bax/Bcl-2 ratio. Statistical Analysis Used All data were statistically analysed with either parametric (analysis of various) or non-parametric (Kruskal-Wallis) tests. Results The combination of EG 7.5% + DJC 15% (KP2) showed the lowest Bax/Bcl-2 ratio in primordial and primary follicles. Meanwhile, the lowest Bax/Bcl-2 ratio in secondary follicles is found in KP4 (EG 15% + DJC 15%). The DJC is known to contain a dominant amount of glucose. The DJC shows antioxidant activity and contains antioxidant compounds, phenols and flavonoids. Conclusion The sugar content and antioxidant compounds of DJC can protect against follicle membrane damage, so the rate of intrinsic apoptosis pathway is also suppressed initially with Bax protein suppression in the mitochondrial membrane.
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Affiliation(s)
- Aisyah Safrina
- Department of Histology, Faculty of Medicine, University of Medicine, Universitas Indonesia, Depok, West Java, Indonesia
| | - Nova Anita
- Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, West Java, Indonesia
| | - Ahmad Aulia Jusuf
- Faculty of Medicine, Universitas Indonesia, Depok, West Java, Indonesia
| | - Rahimi Syaidah
- Faculty of Medicine, Universitas Indonesia, Depok, West Java, Indonesia
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24
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Rogulska O, Havelkova J, Petrenko Y. Cryopreservation of Organoids. CRYOLETTERS 2023. [DOI: 10.54680/fr23210110112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Organoids represent indispensable opportunities for biomedicine, including drug discovery, cancer biology, regenerative and personalised medicine or tissue and organ transplantation. However, the lack of optimised preservation strategies limits the wide use of organoids in research
or clinical fields. In this review, we present a short outline of the recent developments in organoid research and current cryopreservation strategies for organoid systems. While both vitrification and slow controlled freezing have been utilized for the cryopreservation of organoid structures
or their precursor components, the controlled-rate slow freezing under protection of Me2 SO remains the most common approach. The application of appropriate pre- or post-treatment strategies, like the addition of Rho-kinase or myosin inhibitors into cell culture or cryopreservation
medium, can increase the recovery of complex organoid constructs post-thaw. However, the high complexity of the organoid structure and heterogeneity of cellular composition bring challenges associated with cryoprotectant distribution, distinct response of cells to the solution and freezing-induced
injuries. The deficit of adequate quality control methods, which may ensure the assessment of organoid recovery in due term without prolonged re-cultivation process, represents another challenge limiting the reproducibility of current cryobanking technology. In this review, we attempt to assess
the current demands and achievements in organoid cryopreservation and highlight the key questions to focus on during the development of organoid preservation technologies.
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Affiliation(s)
- Olena Rogulska
- Department of Biochemistry, Institute for Problems of Cryobiology and Cryomedicine of the NAS Ukraine, Kharkiv, Ukraine
| | - Jarmila Havelkova
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the CAS, Prague, Czech Republic
| | - Yuriy Petrenko
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the CAS, Prague, Czech Republic
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25
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Ishizaki T, Takeuchi Y, Ishibashi K, Gotoh N, Hirata E, Kuroda K. Cryopreservation of tissues by slow-freezing using an emerging zwitterionic cryoprotectant. Sci Rep 2023; 13:37. [PMID: 36593263 PMCID: PMC9807565 DOI: 10.1038/s41598-022-23913-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 11/07/2022] [Indexed: 01/04/2023] Open
Abstract
Cryopreservation of tissues is a tough challenge. Cryopreservation is categorized into slow-freezing and vitrification, and vitrification has recently been recognized as a suitable method for tissue cryopreservation. On the contrary, some researchers have reported that slow-freezing also has potential for tissue cryopreservation. Although conventional cryoprotectants have been studied well, some novel ones may efficiently cryopreserve tissues via slow-freezing. In this study, we used aqueous solutions of an emerging cryoprotectant, an artificial zwitterion supplemented with a conventional cryoprotectant, dimethyl sulfoxide (DMSO), for cell spheroids. The zwitterion/DMSO aqueous solutions produced a better cryoprotective effect on cell spheroids, which are the smallest units of tissues, compared to that of a commercial cryoprotectant. Cryopreservation with the zwitterion/DMSO solutions not only exhibited better cell recovery but also maintained the functions of the spheroids effectively. The optimized composition of the solution was 10 wt% zwitterion, 15 wt% DMSO, and 75 wt% water. The zwitterion/DMSO solution gave a higher number of living cells for the cryopreservation of mouse tumor tissues than a commercial cryoprotectant. The zwitterion/DMSO solution was also able to cryopreserve human tumor tissue, a patient-derived xenograft.
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Affiliation(s)
- Takeru Ishizaki
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan
| | - Yasuto Takeuchi
- Cancer Research Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan
| | - Kojiro Ishibashi
- Cancer Research Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan
| | - Noriko Gotoh
- Cancer Research Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan
| | - Eishu Hirata
- Cancer Research Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan. .,WPI-Nano Life Science Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan.
| | - Kosuke Kuroda
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan. .,NanoMaterials Research Institute, Kanazawa University, Kakuma-Machi, Kanazawa, 920-1192, Japan.
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26
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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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27
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Shajib MS, Futrega K, Franco RAG, McKenna E, Guillesser B, Klein TJ, Crawford RW, Doran MR. Method for manufacture and cryopreservation of cartilage microtissues. J Tissue Eng 2023; 14:20417314231176901. [PMID: 37529249 PMCID: PMC10387698 DOI: 10.1177/20417314231176901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/04/2023] [Indexed: 08/03/2023] Open
Abstract
The financial viability of a cell and tissue-engineered therapy may depend on the compatibility of the therapy with mass production and cryopreservation. Herein, we developed a method for the mass production and cryopreservation of 3D cartilage microtissues. Cartilage microtissues were assembled from either 5000 human bone marrow-derived stromal cells (BMSC) or 5000 human articular chondrocytes (ACh) each using a customized microwell platform (the Microwell-mesh). Microtissues rapidly accumulate homogenous cartilage-like extracellular matrix (ECM), making them potentially useful building blocks for cartilage defect repair. Cartilage microtissues were cultured for 5 or 10 days and then cryopreserved in 90% serum plus 10% dimethylsulfoxide (DMSO) or commercial serum-free cryopreservation media. Cell viability was maximized during thawing by incremental dilution of serum to reduce oncotic shock, followed by washing and further culture in serum-free medium. When assessed with live/dead viability dyes, thawed microtissues demonstrated high viability but reduced immediate metabolic activity relative to unfrozen control microtissues. To further assess the functionality of the freeze-thawed microtissues, their capacity to amalgamate into a continuous tissue was assess over a 14 day culture. The amalgamation of microtissues cultured for 5 days was superior to those that had been cultured for 10 days. Critically, the capacity of cryopreserved microtissues to amalgamate into a continuous tissue in a subsequent 14-day culture was not compromised, suggesting that cryopreserved microtissues could amalgamate within a cartilage defect site. The quality ECM was superior when amalgamation was performed in a 2% O2 atmosphere than a 20% O2 atmosphere, suggesting that this process may benefit from the limited oxygen microenvironment within a joint. In summary, cryopreservation of cartilage microtissues is a viable option, and this manipulation can be performed without compromising tissue function.
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Affiliation(s)
- Md. Shafiullah Shajib
- School of Biomedical Science, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
| | - Kathryn Futrega
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
| | - Rose Ann G Franco
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
| | - Eamonn McKenna
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
| | - Bianca Guillesser
- School of Biomedical Science, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
| | - Travis J Klein
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
| | - Ross W Crawford
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
| | - Michael R Doran
- School of Biomedical Science, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, Australia
- Translational Research Institute, Brisbane, QLD, Australia
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
- Mater Research Institute – University of Queensland, Brisbane, QLD, Australia
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28
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Omelchenko AN, Igonina TN, Brusentsev EY, Okotrub KA, Amstislavsky SY, Surovtsev NV. Cryopreservation increases accumulation of exogenous stearic acid in mouse embryos. Cryobiology 2022; 109:44-52. [PMID: 36179820 DOI: 10.1016/j.cryobiol.2022.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 01/16/2023]
Abstract
Cryopreservation of preimplantation embryos is a widely used technique, but this procedure might impact the subsequent embryo development. The effect of slow freezing and vitrification on the lipid metabolism in preimplantation mammalian embryos is not well studied. In this work, we applied Raman spectroscopy of isotopically labeled molecules to address the effects of cryopreservation on fatty acid accumulation in mouse embryos. Embryos after slow freezing or vitrification were cultured for 20 h in a medium supplemented with bovine serum albumin saturated with deuterated stearic acid (dSA). After this period the concentration of dSA estimated from Raman spectra of frozen-thawed and vitrified-warmed embryos at the morula stage was almost twice higher compared to non-cryopreserved morulas. At the same time, frozen-thawed and vitrified-warmed 4-cell embryos did not demonstrate any difference in the level of stearic acid uptake from non-cryopreserved embryos of the same stage. After an additional 24 h culture, cryopreserved and non-cryopreserved embryos demonstrated similar dSA uptake.
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Affiliation(s)
- A N Omelchenko
- Novosibirsk State University, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - T N Igonina
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - E Y Brusentsev
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - K A Okotrub
- Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia.
| | - S Y Amstislavsky
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - N V Surovtsev
- Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
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29
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Hughes G, Martins da Silva S. Sperm cryopreservation for impaired spermatogenesis. REPRODUCTION AND FERTILITY 2022; 4:RAF-22-0106. [PMID: 36547401 PMCID: PMC9874962 DOI: 10.1530/raf-22-0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022] Open
Abstract
Sperm cryopreservation for men with severely impaired spermatogenesis is one of the commonest reasons for short-term sperm storage, usually in advance of fertility treatment. Cryopreservation is generally very effective, although not all spermatozoa survive the process of freezing and thawing. This review considers various aspects of freezing sperm, including an overview of methods, appropriate use of cryoprotectants and practical considerations, as well as oxidative stress and mechanisms of cell cryodamage.
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Affiliation(s)
- G Hughes
- Assisted Conception Unit, Ninewells Hospital, Dundee, UK
| | - S Martins da Silva
- Assisted Conception Unit, Ninewells Hospital, Dundee, UK
- Reproductive Medicine Research Group, School of Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
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30
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Biomolecular Pathways of Cryoinjuries in Low-Temperature Storage for Mammalian Specimens. Bioengineering (Basel) 2022; 9:bioengineering9100545. [PMID: 36290513 PMCID: PMC9598205 DOI: 10.3390/bioengineering9100545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/22/2022] Open
Abstract
Low-temperature preservation could effectively extend in vitro storage of biological materials due to delayed or suspended cellular metabolism and decaying as illustrated by the Arrhenius model. It is widely used as an enabling technology for a variety of biomedical applications such as cell therapeutics, assisted reproductive technologies, organ transplantation, and mRNA medicine. Although the technology to minimize cryoinjuries of mammalian specimens during preservation has been advanced substantially over past decades, mammalian specimens still suffer cryoinjuries under low-temperature conditions. Particularly, the molecular mechanisms underlying cryoinjuries are still evasive, hindering further improvement and development of preservation technologies. In this paper, we systematically recapitulate the molecular cascades of cellular injuries induced by cryopreservation, including apoptosis, necroptosis, ischemia-reperfusion injury (IRI). Therefore, this study not only summarizes the impact of low-temperature preservations on preserved cells and organs on the molecular level, but also provides a molecular basis to reduce cryoinjuries for future exploration of biopreservation methods, materials, and devices.
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31
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Sun Y, Li Y, Zong Y, Mehaisen GMK, Chen J. Poultry genetic heritage cryopreservation and reconstruction: advancement and future challenges. J Anim Sci Biotechnol 2022; 13:115. [PMID: 36210477 PMCID: PMC9549680 DOI: 10.1186/s40104-022-00768-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/10/2022] [Indexed: 11/10/2022] Open
Abstract
Poultry genetics resources, including commercial selected lines, indigenous breeds, and experimental lines, are now being irreversibly lost at an alarming rate due to multiple reasons, which further threats the future livelihood and academic purpose. Collections of germplasm may reduce the risk of catastrophic loss of genetic diversity by guaranteeing that a pool of genetic variability is available to ensure the reintroduction and replenishment of the genetic stocks. The setting up of biobanks for poultry is challenging because the high sensitiveness of spermatozoa to freezing–thawing process, inability to cryopreserve the egg or embryo, coupled with the females being heterogametic sex. The progress in cryobiology and biotechnologies have made possible the extension of the range of germplasm for poultry species available in cryobanks, including semen, primordial germ cells, somatic cells and gonads. In this review, we introduce the state-of-the-art technologies for avian genetic resource conservation and breed reconstruction, and discuss the potential challenges for future study and further extending of these technologies to ongoing and future conservation efforts.
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32
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He J, Khan UZ, Qing L, Wu P, Tang J. Improving the ischemia-reperfusion injury in vascularized composite allotransplantation: Clinical experience and experimental implications. Front Immunol 2022; 13:998952. [PMID: 36189311 PMCID: PMC9523406 DOI: 10.3389/fimmu.2022.998952] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/29/2022] [Indexed: 11/21/2022] Open
Abstract
Long-time ischemia worsening transplant outcomes in vascularized composite allotransplantation (VCA) is often neglected. Ischemia-reperfusion injury (IRI) is an inevitable event that follows reperfusion after a period of cold static storage. The pathophysiological mechanism activates local inflammation, which is a barrier to allograft long-term immune tolerance. The previous publications have not clearly described the relationship between the tissue damage and ischemia time, nor the rejection grade. In this review, we found that the rejection episodes and rejection grade are usually related to the ischemia time, both in clinical and experimental aspects. Moreover, we summarized the potential therapeutic measures to mitigate the ischemia-reperfusion injury. Compare to static preservation, machine perfusion is a promising method that can keep VCA tissue viability and extend preservation time, which is especially beneficial for the expansion of the donor pool and better MHC-matching.
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Affiliation(s)
- Jiqiang He
- Department of Hand and Microsurgery, Xiangya Hospital of Central South University, Changsha, China
| | - Umar Zeb Khan
- Department of Hand and Microsurgery, Xiangya Hospital of Central South University, Changsha, China
| | - Liming Qing
- Department of Hand and Microsurgery, Xiangya Hospital of Central South University, Changsha, China
| | - Panfeng Wu
- Department of Hand and Microsurgery, Xiangya Hospital of Central South University, Changsha, China
| | - Juyu Tang
- Department of Hand and Microsurgery, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
- *Correspondence: Juyu Tang,
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Wang Z, Valenzuela C, Wu J, Chen Y, Wang L, Feng W. Bioinspired Freeze-Tolerant Soft Materials: Design, Properties, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201597. [PMID: 35971186 DOI: 10.1002/smll.202201597] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/12/2022] [Indexed: 06/15/2023]
Abstract
In nature, many biological organisms have developed the exceptional antifreezing ability to survive in extremely cold environments. Inspired by the freeze resistance of these organisms, researchers have devoted extensive efforts to develop advanced freeze-tolerant soft materials and explore their potential applications in diverse areas such as electronic skin, soft robotics, flexible energy, and biological science. Herein, a comprehensive overview on the recent advancement of freeze-tolerant soft materials and their emerging applications from the perspective of bioinspiration and advanced material engineering is provided. First, the mechanisms underlying the freeze tolerance of cold-enduring biological organisms are introduced. Then, engineering strategies for developing antifreezing soft materials are summarized. Thereafter, recent advances in freeze-tolerant soft materials for different technological applications such as smart sensors and actuators, energy harvesting and storage, and cryogenic medical applications are presented. Finally, future challenges and opportunities for the rapid development of bioinspired freeze-tolerant soft materials are discussed.
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Affiliation(s)
- Zhiyong Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Cristian Valenzuela
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Jianhua Wu
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Yuanhao Chen
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Ling Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China
| | - Wei Feng
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China
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Ordóñez-León EA, Martínez-Rodero I, García-Martínez T, López-Béjar M, Yeste M, Mercade E, Mogas T. Exopolysaccharide ID1 Improves Post-Warming Outcomes after Vitrification of In Vitro-Produced Bovine Embryos. Int J Mol Sci 2022; 23:ijms23137069. [PMID: 35806071 PMCID: PMC9266775 DOI: 10.3390/ijms23137069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 12/04/2022] Open
Abstract
This study aimed to assess the cryoprotectant role of exopolysaccharide (EPS) ID1, produced by Antarctic Pseudomonas sp., in the vitrification of in vitro-produced (IVP) bovine embryos. IVP day 7 (D7) and day 8 (D8) expanded blastocysts derived from cow or calf oocytes were vitrified without supplementation (EPS0) or supplemented with 10 µg/mL (EPS10) or 100 µg/mL (EPS100) EPS ID1. The effect of EPS ID1 was assessed in post-warming re-expansion and hatching rates, differential cell count, apoptosis rate, and gene expression. EPS100 re-expansion rates were significantly higher than those observed for the EPS0 and EPS10 treatments, regardless of culture length or oocyte source. EPS100 hatching rate was similar to the one of the fresh blastocysts except for those D7 blastocysts derived from calf oocytes. No differences were observed among EPS ID1 treatments when the inner cell mass, trophectoderm, and total cell number were assessed. Although apoptosis rates were higher (p ≤ 0.05) in vitrified groups compared to fresh embryos, EPS100 blastocysts had a lower number (p ≤ 0.05) of apoptotic nuclei than the EPS0 or EPS10 groups. No differences in the expression of BCL2, AQP3, CX43, and SOD1 genes between treatments were observed. Vitrification without EPS ID1 supplementation produced blastocysts with significantly higher BAX gene expression, whereas treatment with 100 µg/mL EPS ID1 returned BAX levels to those observed in non-vitrified blastocysts. Our results suggest that 100 µg/mL EPS ID1 added to the vitrification media is beneficial for embryo cryopreservation because it results in higher re-expansion and hatching ability and it positively modulates apoptosis.
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Affiliation(s)
- Erika Alina Ordóñez-León
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, ES-08193 Barcelona, Spain; (E.A.O.-L.); (I.M.-R.); (T.G.-M.)
- Brasuca In Vitro, Villahermosa MX-86040, Mexico
| | - Iris Martínez-Rodero
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, ES-08193 Barcelona, Spain; (E.A.O.-L.); (I.M.-R.); (T.G.-M.)
| | - Tania García-Martínez
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, ES-08193 Barcelona, Spain; (E.A.O.-L.); (I.M.-R.); (T.G.-M.)
| | - Manel López-Béjar
- Department of Animal Health and Anatomy, Autonomous University of Barcelona, Cerdanyola del Vallès, ES-08193 Barcelona, Spain;
| | - Marc Yeste
- Department of Biology, Institute of Food and Agricultural Technology, University of Girona, ES-17004 Girona, Spain;
| | - Elena Mercade
- Department of Biology, Health and Environment, University of Barcelona, ES-08007 Barcelona, Spain;
| | - Teresa Mogas
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, ES-08193 Barcelona, Spain; (E.A.O.-L.); (I.M.-R.); (T.G.-M.)
- Correspondence: ; Tel.: +34-696-64-51-27
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Marcantonini G, Bartolini D, Zatini L, Costa S, Passerini M, Rende M, Luca G, Basta G, Murdolo G, Calafiore R, Galli F. Natural Cryoprotective and Cytoprotective Agents in Cryopreservation: A Focus on Melatonin. Molecules 2022; 27:3254. [PMID: 35630729 PMCID: PMC9145333 DOI: 10.3390/molecules27103254] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/13/2022] [Accepted: 05/15/2022] [Indexed: 01/31/2023] Open
Abstract
Cryoprotective and cytoprotective agents (Cytoprotective Agents) are fundamental components of the cryopreservation process. This review presents the essentials of the cryopreservation process by examining its drawbacks and the role of cytoprotective agents in protecting cell physiology. Natural cryoprotective and cytoprotective agents, such as antifreeze proteins, sugars and natural deep eutectic systems, have been compared with synthetic ones, addressing their mechanisms of action and efficacy of protection. The final part of this article focuses melatonin, a hormonal substance with antioxidant properties, and its emerging role as a cytoprotective agent for somatic cells and gametes, including ovarian tissue, spermatozoa and spermatogonial stem cells.
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Affiliation(s)
- Giada Marcantonini
- Department of Pharmaceutical Sciences, Lipidomics and Micronutrient Vitamins Laboratory and Human Anatomy Laboratory, University of Perugia, 06126 Perugia, Italy; (G.M.); (D.B.); (L.Z.)
| | - Desirée Bartolini
- Department of Pharmaceutical Sciences, Lipidomics and Micronutrient Vitamins Laboratory and Human Anatomy Laboratory, University of Perugia, 06126 Perugia, Italy; (G.M.); (D.B.); (L.Z.)
| | - Linda Zatini
- Department of Pharmaceutical Sciences, Lipidomics and Micronutrient Vitamins Laboratory and Human Anatomy Laboratory, University of Perugia, 06126 Perugia, Italy; (G.M.); (D.B.); (L.Z.)
| | - Stefania Costa
- Angelantoni Life Science S.r.l., 06056 Massa Martana, Italy; (S.C.); (M.P.)
| | | | - Mario Rende
- Department of Medicine and Surgery, Section of Human, Clinic and Forensic Anatomy, University of Perugia, 06132 Perugia, Italy;
| | - Giovanni Luca
- Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (G.L.); (G.B.); (G.M.); (R.C.)
- Centro Biotecnologico Internazionale di Ricerca Traslazionale ad Indirizzo Endocrino, Metabolico ed Embrio-Riproduttivo (CIRTEMER), 06132 Perugia, Italy
| | - Giuseppe Basta
- Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (G.L.); (G.B.); (G.M.); (R.C.)
- Centro Biotecnologico Internazionale di Ricerca Traslazionale ad Indirizzo Endocrino, Metabolico ed Embrio-Riproduttivo (CIRTEMER), 06132 Perugia, Italy
| | - Giuseppe Murdolo
- Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (G.L.); (G.B.); (G.M.); (R.C.)
| | - Riccardo Calafiore
- Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (G.L.); (G.B.); (G.M.); (R.C.)
- Centro Biotecnologico Internazionale di Ricerca Traslazionale ad Indirizzo Endocrino, Metabolico ed Embrio-Riproduttivo (CIRTEMER), 06132 Perugia, Italy
| | - Francesco Galli
- Department of Pharmaceutical Sciences, Lipidomics and Micronutrient Vitamins Laboratory and Human Anatomy Laboratory, University of Perugia, 06126 Perugia, Italy; (G.M.); (D.B.); (L.Z.)
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Du X, Li J, Zhuan Q, Zhang L, Meng L, Ren P, Huang X, Bai J, Wan P, Sun W, Hou Y, Zhu S, Fu X. Artificially Increasing Cortical Tension Improves Mouse Oocytes Development by Attenuating Meiotic Defects During Vitrification. Front Cell Dev Biol 2022; 10:876259. [PMID: 35399525 PMCID: PMC8987233 DOI: 10.3389/fcell.2022.876259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/09/2022] [Indexed: 01/22/2023] Open
Abstract
Oocyte cryopreservation demonstrates great benefits in the conservation of animal germplasm resources and assisted reproductive technology. However, vitrification causes damages in oocytes, which would lead to the decrease of oocyte quality, and embryonic development post fertilization. Cytoskeleton plays an important role in regulating cell shape, organelle migration, cell division and mechanical signal transduction. Cortical tension is a reflection of the physiological state and contractile ability of cortical cytoskeleton. Appropriate cortical tension is prerequesite for normal oocyte meiosis. In the present study, oocyte cortical tension was examined by evaluating the levels of cortical tension-related protein pERM (Phospho-Ezrin/Radixin/Moesin) and pMRLC (Phospho-Myosin Light Chain 2). We found that the cortical tension of vitrified oocytes was decreased. Increasing cortical tension of vitrified oocytes by adding 10 μg/ml ConA during in vitro culture could significantly improve the polar body extrusion rate and embryo development. Furthermore, increasing the cortical tension could improve spindle positioning, maintain kinetochore-microtubule (KT-MT) attachment, strengthen spindle assembly checkpoint (SAC) activity, and reduce the aneuploidy rate in vitrified oocytes. In conclusion, vitrification induced a remarkable decrease in cortical tension, and increasing the cortical tension could rescue the meiosis defect and improve oocyte quality.
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Affiliation(s)
- Xingzhu Du
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jun Li
- Department of Reproductive Medicine, Reproductive Medical Center, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Qingrui Zhuan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Luyao Zhang
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Lin Meng
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Panyu Ren
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xiaohan Huang
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Jiachen Bai
- Institute of Biothermal Science and Technology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Pengcheng Wan
- State Key Laboratory of Sheep Genetic Improvement and Healthy Breeding, Institute of Animal Husbandry and Veterinary Sciences, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
| | - Wenquan Sun
- Institute of Biothermal Science and Technology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yunpeng Hou
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Shien Zhu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xiangwei Fu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
- State Key Laboratory of Sheep Genetic Improvement and Healthy Breeding, Institute of Animal Husbandry and Veterinary Sciences, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
- *Correspondence: Xiangwei Fu,
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Valente RS, Marsico TV, Sudano MJ. Basic and applied features in the cryopreservation progress of bovine embryos. Anim Reprod Sci 2022; 239:106970. [DOI: 10.1016/j.anireprosci.2022.106970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/10/2022] [Accepted: 03/19/2022] [Indexed: 11/30/2022]
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Chan JA, Vercauteren SM. Processing and Cryopreservation of Blood, Cancer Tissues, and Cancer Cells for Viable Biobanking. Methods Mol Biol 2022; 2508:45-58. [PMID: 35737232 DOI: 10.1007/978-1-0716-2376-3_5] [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] [Indexed: 06/15/2023]
Abstract
Biorepositories of fresh frozen and formalin-fixed paraffin-embedded tissues have been foundational to many molecular cancer research studies. Collections of these materials, however, do not enable the establishment of short-term cultures, cell lines, or patient-derived xenograft models for functional studies. Also, intact dissociated cells that are required for some single-cell analyses cannot be obtained from these material types. Adding viable tumor banking to the repertoire of routine cancer biobanking would increase the value of samples collected. This chapter outlines procedures for processing and storing blood and tissue specimens viably in order to expand the future utility of the samples collected. We provide practical tips that can be used by banks and other researchers seeking to incorporate the cryopreservation of viable materials as part of their overall biobanking strategies.
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Affiliation(s)
- Jennifer A Chan
- Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, AB, Canada.
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada.
| | - Suzanne M Vercauteren
- BC Children's Hospital Research Institute, Vancouver, BC, Canada
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, BC Children's Hospital, Vancouver, BC, Canada
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Criswell T, Swart C, Stoudemire J, Brockbank K, Floren M, Eaker S, Hunsberger J. OUP accepted manuscript. Stem Cells Transl Med 2022; 11:107-113. [PMID: 36239619 PMCID: PMC9562819 DOI: 10.1093/stcltm/szab025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/07/2021] [Indexed: 11/20/2022] Open
Abstract
Advances in regenerative medicine manufacturing continue to be a priority for achieving the full commercial potential of important breakthrough therapies. Equally important will be the establishment of distribution chains that support the transport of live cells and engineered tissues and organs resulting from these advanced biomanufacturing processes. The importance of a well-managed distribution chain for products requiring specialized handling procedures was highlighted during the COVID-19 pandemic and serves as a reminder of the critical role of logistics and distribution in the success of breakthrough therapies. This perspective article will provide insight into current practices and future considerations for creating global distribution chains that facilitate the successful deployment of regenerative medicine therapies to the vast number of patients that would benefit from them worldwide.
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Affiliation(s)
- Tracy Criswell
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, USA
- Corresponding author: Tracy Criswell, PhD, Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine, 391 Technology Way, Winston-Salem, NC 27101, USA. Tel: 336-713-1615;
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Malajczuk CJ, Armstrong BI, Stachura SS, Mancera RL. Mechanisms of Interaction of Small Hydroxylated Cryosolvents with Dehydrated Model Cell Membranes: Stabilization vs Destruction. J Phys Chem B 2021; 126:197-216. [PMID: 34967634 DOI: 10.1021/acs.jpcb.1c07769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The mechanism by which cryosolvents such as alcohols modify and penetrate cell membranes as a function of their concentration and hydration state remains poorly understood. We conducted molecular dynamics simulations of 1,2-dioleoyl-sn-glycero-3-phosphocholine bilayers in the presence of aqueous solutions of four common penetrating hydroxylated cryosolvents (methanol, ethylene glycol, propylene glycol, and glycerol) at varying concentration ranges and across three different hydration states. All cryosolvents were found to preferentially replace water at the bilayer interface, and a reduction in hydration state correlates with a higher proportion of cryosolvent at the interface for relative concentrations. Minor differences in chemical structure had a profound effect on cryosolvent-membrane interactions, as the lone methyl groups of methanol and propylene glycol enhanced their membrane localization and penetration, but with increasing concentrations acted to destabilize the membrane structure in a process heightened at higher hydration states. By contrast, ethylene glycol and glycerol promoted and retained membrane structural integrity by forming hydrogen-bonded lipid bridges via distally located hydroxyl groups. Glycerol exhibited the highest capacity to cross-link lipids at relative concentrations, as well as promoted a bilayer structure consistent with a fully hydrated bilayer in the absence of cryosolvent for all hydration states investigated.
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Affiliation(s)
- Chris J Malajczuk
- Curtin Medical School, Curtin Health Innovation Research Institute and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth WA 6845, Australia
| | - Blake I Armstrong
- Curtin Medical School, Curtin Health Innovation Research Institute and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth WA 6845, Australia
| | - Sławomir S Stachura
- Curtin Medical School, Curtin Health Innovation Research Institute and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth WA 6845, Australia
| | - Ricardo L Mancera
- Curtin Medical School, Curtin Health Innovation Research Institute and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth WA 6845, Australia
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Live Imaging of Primary Neurons in Long-Term Cryopreserved Human Nerve Tissue. eNeuro 2021; 8:ENEURO.0388-21.2021. [PMID: 34759050 PMCID: PMC8638677 DOI: 10.1523/eneuro.0388-21.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/26/2021] [Accepted: 11/03/2021] [Indexed: 02/03/2023] Open
Abstract
Tissue cryopreservation provides a convenient solution for tackling one of the major problems in neuroscience research, namely, the scarce availability of human nerve tissues, especially if needed alive. While brain tissue can be used only postmortem, live nerve tissue can reasonably well be harvested from the periphery. A valuable source of primary neurons is the intestine, which compared with brain has the advantage to be safely accessible via endoscopy. The nerve tissue innervating the intestine (the enteric nervous system; ENS) can be sampled with regular endoscopic biopsy forceps and remains viable for multiple physiological and immunohistochemical tests, as previously demonstrated. Here, we present a method to preserve, over longer periods of time, human primary neurons contained in these biopsies. The use of a cryoprotective agent and the application of controlled cooling revealed to be crucial to properly store the nerve tissue and to enable functional measurements after thawing. These primary neurons were evaluated for functionality (live imaging) and morphology (histology) up to one year after cryopreservation. Calcium (Ca2+) imaging indicated that human primary neurons remained viable and responded to selective stimulations (serotonergic and nicotinic agonists) after cryopreservation. Additionally, immunohistochemistry performed with specific neuronal markers showed that nerve structure and neuronal morphology were retained, with no signs of cellular damage. In this study, we demonstrate that the human ENS is a realistic source of primary neurons, which can be successfully preserved over long times and as such can be exploited both for gastrointestinal-specific as well as for general neuroscience research.
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López A, Betancourt M, Ducolomb Y, Rodríguez JJ, Casas E, Bonilla E, Bahena I, Retana-Márquez S, Juárez-Rojas L, Casillas F. DNA damage in cumulus cells generated after the vitrification of in vitro matured porcine oocytes and its impact on fertilization and embryo development. Porcine Health Manag 2021; 7:56. [PMID: 34663451 PMCID: PMC8522150 DOI: 10.1186/s40813-021-00235-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 10/08/2021] [Indexed: 12/31/2022] Open
Abstract
Background The evaluation of the DNA damage generated in cumulus cells after mature cumulus-oocyte complexes vitrification can be considered as an indicator of oocyte quality since these cells play important roles in oocyte developmental competence. Therefore, the aim of this study was to determine if matured cumulus-oocyte complexes exposure to cryoprotectants (CPAs) or vitrification affects oocytes and cumulus cells viability, but also if DNA damage is generated in cumulus cells, affecting fertilization and embryo development. Results The DNA damage in cumulus cells was measured using the alkaline comet assay and expressed as Comet Tail Length (CTL) and Olive Tail Moment (OTM). Results demonstrate that oocyte exposure to CPAs or vitrification reduced oocyte (75.5 ± 3.69%, Toxicity; 66.7 ± 4.57%, Vitrification) and cumulus cells viability (32.7 ± 5.85%, Toxicity; 7.7 ± 2.21%, Vitrification) compared to control (95.5 ± 4.04%, oocytes; 89 ± 4.24%, cumulus cells). Also, significantly higher DNA damage expressed as OTM was generated in the cumulus cells after exposure to CPAs and vitrification (39 ± 17.41, 33.6 ± 16.69, respectively) compared to control (7.4 ± 4.22). In addition, fertilization and embryo development rates also decreased after exposure to CPAs (35.3 ± 16.65%, 22.6 ± 3.05%, respectively) and vitrification (32.3 ± 9.29%, 20 ± 1%, respectively). It was also found that fertilization and embryo development rates in granulose-intact oocytes were significantly higher compared to denuded oocytes in the control groups. However, a decline in embryo development to the blastocyst stage was observed after CPAs exposure (1.66 ± 0.57%) or vitrification (2 ± 1%) compared to control (22.3 ± 2.51%). This could be attributed to the reduction in both cell types viability, and the generation of DNA damage in the cumulus cells. Conclusion This study demonstrates that oocyte exposure to CPAs or vitrification reduced viability in oocytes and cumulus cells, and generated DNA damage in the cumulus cells, affecting fertilization and embryo development rates. These findings will allow to understand some of the mechanisms of oocyte damage after vitrification that compromise their developmental capacity, as well as the search for new vitrification strategies to increase fertilization and embryo development rates by preserving the integrity of the cumulus cells.
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Affiliation(s)
- Alma López
- Biological and Health Sciences Program, Metropolitan Autonomous University, Mexico City, Mexico.,Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Miguel Betancourt
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Yvonne Ducolomb
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Juan José Rodríguez
- Genetic and Environmental Toxicology Research Unit, FES-Zaragoza-UMIEZ Campus II, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Eduardo Casas
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Edmundo Bonilla
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Iván Bahena
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, 09340, Mexico City, Mexico
| | - Socorro Retana-Márquez
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico
| | - Lizbeth Juárez-Rojas
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico
| | - Fahiel Casillas
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Av. San Rafael Atlixco 186, Leyes de Reforma, 09340, Mexico City, Mexico.
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Embryology outcomes after oocyte vitrification with super-cooled slush nitrogen are similar to outcomes with conventional liquid nitrogen: a randomized controlled trial. Fertil Steril 2021; 117:106-114. [PMID: 34654569 DOI: 10.1016/j.fertnstert.2021.08.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether the use of slush nitrogen (SN), a super-cooled form of nitrogen with a temperature from -207 to -210 °C, can improve oocyte survival after vitrification and warming compared with conventional liquid nitrogen (LN). DESIGN Randomized controlled trial. SETTING Academic-affiliated private practice. PATIENT(S) A total of 556 metaphase II oocytes from 32 oocyte donor cycles were included. INTERVENTION(S) Donor oocytes were block randomized to undergo vitrification with either SN or LN. Vitrification was followed by warming, fertilization with donor sperm, embryo culture to the blastocyst stage, and preimplantation genetic testing for aneuploidy via trophectoderm biopsy with targeted next-generation sequencing. MAIN OUTCOME MEASURE(S) The primary outcome was oocyte survival after vitrification and warming. Secondary outcomes included rates of fertilization, usable blastocyst formation, and whole chromosome aneuploidy. RESULT(S) Half of the metaphase II oocytes (n = 278) were randomized to undergo vitrification with SN, whereas the other half (n = 278) were randomized to undergo vitrification with LN. There were no statistically significant differences noted in oocyte survival rate (85.3% vs. 86.3%), fertilization rate (84.0% vs. 80.0%), rate of usable blastocyst formation (54.3% vs. 55.7%), or rate of whole chromosome aneuploidy (9.4% vs. 11.7%) between the SN and LN arms, respectively. CONCLUSION(S) The implementation of an SN oocyte vitrification protocol resulted in similar embryology outcomes compared with LN. The use of SN did not lead to any demonstrable improvement in oocyte survival after vitrification and warming. CLINICAL TRIAL REGISTRATION NUMBER NCT04342364.
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Bajerski F, Nagel M, Overmann J. Microbial occurrence in liquid nitrogen storage tanks: a challenge for cryobanking? Appl Microbiol Biotechnol 2021; 105:7635-7650. [PMID: 34559283 PMCID: PMC8460408 DOI: 10.1007/s00253-021-11531-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 11/30/2022]
Abstract
Abstract Modern biobanks maintain valuable living materials for medical diagnostics, reproduction medicine, and conservation purposes. To guarantee high quality during long-term storage and to avoid metabolic activities, cryostorage is often conducted in the N2 vapour phase or in liquid nitrogen (LN) at temperatures below − 150 °C. One potential risk of cryostorage is microbial cross contamination in the LN storage tanks. The current review summarises data on the occurrence of microorganisms that may compromise the safety and quality of biological materials during long-term storage. We assess the potential for the microbial contamination of LN in storage tanks holding different biological materials based on the detection by culture-based and molecular approaches. The samples themselves, the LN, the human microbiome, and the surrounding environment are possible routes of contamination and can cause cross contaminations via the LN phase. In general, the results showed that LN is typically not the source of major contaminations and only a few studies provided evidence for a risk of microbial cross contamination. So far, culture-based and culture-independent techniques detected only low amounts of microbial cells, indicating that cross contamination may occur at a very low frequency. To further minimise the potential risk of microbial cross contaminations, we recommend reducing the formation of ice crystals in cryotanks that can entrap environmental microorganisms and using sealed or second sample packing. A short survey demonstrated the awareness for microbial contaminations of storage containers among different culture collections. Although most participants consider the risk of cross contaminations in LN storage tanks as low, they prevent potential contaminations by using sealed devices and − 150 °C freezers. It is concluded that the overall risk for cross contaminations in biobanks is relatively low when following standard operating procedures (SOPs). We evaluated the potential sources in detail and summarised our results in a risk assessment spreadsheet which can be used for the quality management of biobanks. Key points • Identification of potential contaminants and their sources in LN storage tanks. • Recommendations to reduce this risk of LN storage tank contamination. • Development of a risk assessment spreadsheet to support quality management. Supplementary Information The online version contains supplementary material available at 10.1007/s00253-021-11531-4.
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Affiliation(s)
- Felizitas Bajerski
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Brunswick, Germany.
| | - Manuela Nagel
- Genebank Department, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 06466, Seeland OT Gatersleben, Germany
| | - Joerg Overmann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Brunswick, Germany.,Institute of Microbiology, Braunschweig University of Technology, 38106, Brunswick, Germany
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