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Biny L, Gerasimovich E, Karaulov A, Sukhanova A, Nabiev I. Functionalized Calcium Carbonate-Based Microparticles as a Versatile Tool for Targeted Drug Delivery and Cancer Treatment. Pharmaceutics 2024; 16:653. [PMID: 38794315 PMCID: PMC11124899 DOI: 10.3390/pharmaceutics16050653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
Nano- and microparticles are increasingly widely used in biomedical research and applications, particularly as specific labels and targeted delivery vehicles. Silica has long been considered the best material for such vehicles, but it has some disadvantages limiting its potential, such as the proneness of silica-based carriers to spontaneous drug release. Calcium carbonate (CaCO3) is an emerging alternative, being an easily available, cost-effective, and biocompatible material with high porosity and surface reactivity, which makes it an attractive choice for targeted drug delivery. CaCO3 particles are used in this field in the form of either bare CaCO3 microbeads or core/shell microparticles representing polymer-coated CaCO3 cores. In addition, they serve as removable templates for obtaining hollow polymer microcapsules. Each of these types of particles has its specific advantages in terms of biomedical applications. CaCO3 microbeads are primarily used due to their capacity for carrying pharmaceutics, whereas core/shell systems ensure better protection of the drug-loaded core from the environment. Hollow polymer capsules are particularly attractive because they can encapsulate large amounts of pharmaceutical agents and can be so designed as to release their contents in the target site in response to specific stimuli. This review focuses first on the chemistry of the CaCO3 cores, core/shell microbeads, and polymer microcapsules. Then, systems using these structures for the delivery of therapeutic agents, including drugs, proteins, and DNA, are outlined. The results of the systematic analysis of available data are presented. They show that the encapsulation of various therapeutic agents in CaCO3-based microbeads or polymer microcapsules is a promising technique of drug delivery, especially in cancer therapy, enhancing drug bioavailability and specific targeting of cancer cells while reducing side effects. To date, research in CaCO3-based microparticles and polymer microcapsules assembled on CaCO3 templates has mainly dealt with their properties in vitro, whereas their in vivo behavior still remains poorly studied. However, the enormous potential of these highly biocompatible carriers for in vivo applications is undoubted. This last issue is addressed in depth in the Conclusions and Outlook sections of the review.
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Affiliation(s)
- Lara Biny
- Université de Reims Champagne-Ardenne, BIOSPECT, 51100 Reims, France;
| | - Evgeniia Gerasimovich
- Life Improvement by Future Technologies (LIFT) Center, Laboratory of Optical Quantum Sensors, Skolkovo, 143025 Moscow, Russia;
- Laboratory of Nano-Bioengineering, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - Alexander Karaulov
- Department of Clinical Immunology and Allergology, Institute of Molecular Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119146 Moscow, Russia;
| | - Alyona Sukhanova
- Université de Reims Champagne-Ardenne, BIOSPECT, 51100 Reims, France;
| | - Igor Nabiev
- Université de Reims Champagne-Ardenne, BIOSPECT, 51100 Reims, France;
- Life Improvement by Future Technologies (LIFT) Center, Laboratory of Optical Quantum Sensors, Skolkovo, 143025 Moscow, Russia;
- Laboratory of Nano-Bioengineering, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
- Department of Clinical Immunology and Allergology, Institute of Molecular Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119146 Moscow, Russia;
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Hwang ET, Yoon Y, Kim KR, Lee CH, Jeon KC, Min JH, Lee JW, Kim J. Hybrid protein microspheres and their responsive release behaviors and inhibitory effects on melanin synthesis. Biomater Sci 2024; 12:2434-2443. [PMID: 38517309 DOI: 10.1039/d4bm00106k] [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: 03/23/2024]
Abstract
In this study, the formation of protein microspheres through lysosomal enzyme-assisted biomineralized crystallization was demonstrated. Spherical micro-sized hybrid CaCO3 constructs were synthesized and characterized using field-emission scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, and particle size analysis. Additionally, parameters such as the Brunauer-Emmett-Teller surface area and single-point total pore volume, and adsorption/desorption analysis were used to investigate the mesoporous properties, which are advantageous for lysosomal enzyme (LE) loading. A LE can be used as an organic template, not only as a morphological controller but also for entrapping LE during the crystallization pathway. The hybrid protein microspheres accommodated 2.3 mg of LE with a 57% encapsulation efficiency and 5.1 wt% loading. The peroxidase activity of the microspheres was calculated and found to be approximately 0.0238 mM-1 min-1. pH-responsive release of the LE from CaCO3 was observed, suggesting potential biomedical and cosmetic applications in acidic environments. The hybrid LE microsphere treatment significantly alleviated melanin production in a dose-dependent manner and further downregulated the mRNA expression of MITF, tyrosinase, TYRP-1, and TYRP-2. These results indicate skin-whitening effects by inhibiting melanin without inducing cytotoxicity. The data provide the first evidence of the potential use of a LE for obtaining hybrid minerals and the effectiveness of biomineralization-based sustainable delivery of enzyme-based vehicles based on organelle-extract-assisted biomineralization.
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Affiliation(s)
- Ee Taek Hwang
- Department of Food Biotechnology, Dong-A University, Busan 49315, Republic of Korea.
| | - Yeahwa Yoon
- Department of Cosmetics Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Ka Ram Kim
- GeneCellPharm Corporation, Seoul, 05836, Republic of Korea
| | - Chan Hee Lee
- Department of Food Biotechnology, Dong-A University, Busan 49315, Republic of Korea.
| | - Kyung Chan Jeon
- Division of Chemical Engineering, Chonbuk National University, Jeonju 54896, Republic of Korea
| | - Ji Ho Min
- Division of Chemical Engineering, Chonbuk National University, Jeonju 54896, Republic of Korea
| | - Jae Won Lee
- Korea Conformity Laboratories, Incheon, 21999, Republic of Korea
| | - Jangyong Kim
- Institute for Integrated Micro and Nano Systems (IMNS), The University of Edinburgh, Edinburgh EH9 3BF, UK
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Tan C, Dima C, Huang M, Assadpour E, Wang J, Sun B, Kharazmi MS, Jafari SM. Advanced CaCO3-derived delivery systems for bioactive compounds. Adv Colloid Interface Sci 2022; 309:102791. [DOI: 10.1016/j.cis.2022.102791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/26/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022]
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Sikkema R, Keohan B, Zhitomirsky I. Hyaluronic-Acid-Based Organic-Inorganic Composites for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4982. [PMID: 34501070 PMCID: PMC8434239 DOI: 10.3390/ma14174982] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 01/22/2023]
Abstract
Applications of natural hyaluronic acid (HYH) for the fabrication of organic-inorganic composites for biomedical applications are described. Such composites combine unique functional properties of HYH with functional properties of hydroxyapatite, various bioceramics, bioglass, biocements, metal nanoparticles, and quantum dots. Functional properties of advanced composite gels, scaffold materials, cements, particles, films, and coatings are described. Benefiting from the synergy of properties of HYH and inorganic components, advanced composites provide a platform for the development of new drug delivery materials. Many advanced properties of composites are attributed to the ability of HYH to promote biomineralization. Properties of HYH are a key factor for the development of colloidal and electrochemical methods for the fabrication of films and protective coatings for surface modification of biomedical implants and the development of advanced biosensors. Overcoming limitations of traditional materials, HYH is used as a biocompatible capping, dispersing, and structure-directing agent for the synthesis of functional inorganic materials and composites. Gel-forming properties of HYH enable a facile and straightforward approach to the fabrication of antimicrobial materials in different forms. Of particular interest are applications of HYH for the fabrication of biosensors. This review summarizes manufacturing strategies and mechanisms and outlines future trends in the development of functional biocomposites.
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Affiliation(s)
| | | | - Igor Zhitomirsky
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada; (R.S.); (B.K.)
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Bizeau J, Mertz D. Design and applications of protein delivery systems in nanomedicine and tissue engineering. Adv Colloid Interface Sci 2021; 287:102334. [PMID: 33341459 DOI: 10.1016/j.cis.2020.102334] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/24/2020] [Accepted: 11/26/2020] [Indexed: 02/06/2023]
Abstract
Proteins are biological macromolecules involved in a wide range of biological functions, which makes them very appealing as therapeutics agents. Indeed, compared to small molecule drugs, their endogenous nature ensures their biocompatibility and biodegradability, they can be used in a large range of applications and present a higher specificity and activity. However, they suffer from unfolding, enzymatic degradation, short half-life and poor membrane permeability. To overcome such drawbacks, the development of protein delivery systems to protect, carry and deliver them in a controlled way have emerged importantly these last years. In this review, the formulation of a wide panel of protein delivery systems either in the form of polymer or inorganic nanoengineered colloids and scaffolds are presented and the protein loading and release mechanisms are addressed. A section is also dedicated to the detection of proteins and the characterization methods of their release. Then, the main protein delivery systems developed these last three years for anticancer, tissue engineering or diabetes applications are presented, as well as the major in vivo models used to test them. The last part of this review aims at presenting the perspectives of the field such as the use of protein-rich material or the sequestration of proteins. This part will also deal with less common applications and gene therapy as an indirect method to deliver protein.
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Liquid–Solid Core-Shell Microcapsules of Calcium Carbonate Coated Emulsions and Liposomes. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238551] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Micron-sized core-shell particles consisting of a calcium carbonate (CaCO3) mineral shell and a fluidic core were generated using a biomimetic approach, for the purpose of use as biodegradable microcapsules for release of active agents. Dinoflagellate cysts, unicellular organisms which deposit a protective hard mineral shell around their soft and fluidic cellular interior, served as our inspiration. Using the biomimetic polymer-induced liquid-precursor (PILP) mineralization process, calcium carbonate coatings were deposited on charged emulsion droplets and liposomes. Light microscopy, scanning electron microscopy, polarized light microscopy, X-ray diffraction, and confocal fluorescence microscopy were used to demonstrate that smooth CaCO3 mineral coatings can be deposited onto the high curvature surfaces of emulsions and liposomes to yield micron-sized microcapsules for the effective entrapment of both hydrophobic and hydrophilic active agents. These biodegradable and biocompatible CaCO3 microcapsules are novel systems for producing a powdered form of fluid-containing capsules for storage and transport of pharma/chemical agents. They may be used in lieu of, or in conjunction with, existing microcapsule delivery approaches, as well as providing a convenient foundation for which polymeric coatings could be further applied, allowing for more complex targeting and/or chemical-release control.
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Myszka B, Schüßler M, Hurle K, Demmert B, Detsch R, Boccaccini AR, Wolf SE. Phase-specific bioactivity and altered Ostwald ripening pathways of calcium carbonate polymorphs in simulated body fluid. RSC Adv 2019; 9:18232-18244. [PMID: 35515223 PMCID: PMC9064690 DOI: 10.1039/c9ra01473j] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/31/2019] [Indexed: 12/19/2022] Open
Abstract
Calcium carbonate is an abundant biomineral, and already archeological records demonstrate its bioactivity and applicability for osseo-integrative implants. Its solubility, which is generally higher than those of calcium phosphates, depends on its polymorph turning calcium carbonate into a promising biomaterial with tunable bioresorption rate. However, the phase-dependent bioactivity of calcium carbonate, i.e., its osteoconductivity, is still insufficiently characterized. In this study, we address this issue by monitoring the behavior of the four most important calcium carbonate phases, i.e., calcite, aragonite, vaterite, and amorphous calcium carbonate, in simulated body fluid solution at 37 °C. Our results demonstrate that the thermodynamically stable calcite phase is essentially inert. In contrast, the metastable phases aragonite and vaterite are bioactive, thus promoting the formation of calcium phosphate. Amorphous calcium carbonate (ACC) shows prominent bioactivity accompanied by pronounced redissolution processes. Mg-stabilized ACC was additionally tested since its increased stability eases formulation and handling in future applications. It is highly bioactive and, moreover, the additional release of Mg promotes cell viability. Overall, our results demonstrate that bioactivity of calcium carbonate is phase-dependent, allowing tailored response and bioactivity of future calcareous biomaterials. Our results also reveal that phosphate ions strongly interfere with Ostwald-Lussac step ripening of calcium carbonate, kinetically stabilizing metastable polymorphs such as vaterite and aragonite; this is a distinctive feature of the calcium carbonate mineral system which clearly has to be considered in future applications of calcium carbonate as a bioceramic.
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Affiliation(s)
- Barbara Myszka
- Institute of Biomaterials, Friedrich-Alexander-University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany
| | - Martina Schüßler
- Institute for Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nuremberg Martensstraße 5 91058 Erlangen Germany
| | - Katrin Hurle
- GeoZentrum Nordbayern - Mineralogy, Friedrich-Alexander-University Erlangen-Nuremberg Schlossgarten 5a 91054 Erlangen Germany
| | - Benedikt Demmert
- Institute for Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nuremberg Martensstraße 5 91058 Erlangen Germany
| | - Rainer Detsch
- Institute of Biomaterials, Friedrich-Alexander-University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Friedrich-Alexander-University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-University Erlangen-Nuremberg 91058 Erlangen Germany
| | - Stephan E Wolf
- Institute for Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nuremberg Martensstraße 5 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-University Erlangen-Nuremberg 91058 Erlangen Germany
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Demmert B, Schinzel F, Schüßler M, Mondeshki M, Kaschta J, Schubert DW, Jacob DE, Wolf SE. Polymer-Functionalised Nanograins of Mg-Doped Amorphous Calcium Carbonate via a Flow-Chemistry Approach. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1818. [PMID: 31167501 PMCID: PMC6601056 DOI: 10.3390/ma12111818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/29/2019] [Accepted: 06/03/2019] [Indexed: 11/16/2022]
Abstract
Calcareous biominerals typically feature a hybrid nanogranular structure consisting of calcium carbonate nanograins coated with organic matrices. This nanogranular organisation has a beneficial effect on the functionality of these bioceramics. In this feasibility study, we successfully employed a flow-chemistry approach to precipitate Mg-doped amorphous calcium carbonate particles functionalized by negatively charged polyelectrolytes-either polyacrylates (PAA) or polystyrene sulfonate (PSS). We demonstrate that the rate of Mg incorporation and, thus, the ratio of the Mg dopant to calcium in the precipitated amorphous calcium carbonate (ACC), is flow rate dependent. In the case of the PAA-functionalized Mg-doped ACC, we further observed a weak flow rate dependence concerning the hydration state of the precipitate, which we attribute to incorporated PAA acting as a water sorbent; a behaviour which is not present in experiments with PSS and without a polymer. Thus, polymer-dependent phenomena can affect flow-chemistry approaches, that is, in syntheses of functionally graded materials by layer-deposition processes.
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Affiliation(s)
- Benedikt Demmert
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
- Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109 NSW, Australia.
| | - Frank Schinzel
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Martina Schüßler
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Mihail Mondeshki
- Institute for Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Joachim Kaschta
- Department of Materials Science and Engineering (WW), Institute of Polymer Materials (WW5), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Dirk W Schubert
- Department of Materials Science and Engineering (WW), Institute of Polymer Materials (WW5), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Dorrit E Jacob
- Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109 NSW, Australia.
| | - Stephan E Wolf
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Insight into the mechanism and factors on encapsulating basic model protein, lysozyme, into heparin doped CaCO3. Colloids Surf B Biointerfaces 2019; 175:184-194. [DOI: 10.1016/j.colsurfb.2018.11.079] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/25/2018] [Accepted: 11/28/2018] [Indexed: 11/17/2022]
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Chen X, Xu X, Li W, Sun B, Yan J, Chen C, Liu J, Qian J, Sun D. Effective Drug Carrier Based on Polyethylenimine-Functionalized Bacterial Cellulose with Controllable Release Properties. ACS APPLIED BIO MATERIALS 2018. [DOI: 10.1021/acsabm.8b00004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Jun Yan
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China
| | | | - Jian Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China
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Xiong Y, Georgieva R, Steffen A, Smuda K, Bäumler H. Structure and properties of hybrid biopolymer particles fabricated by co-precipitation cross-linking dissolution procedure. J Colloid Interface Sci 2017; 514:156-164. [PMID: 29248817 DOI: 10.1016/j.jcis.2017.12.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/06/2017] [Accepted: 12/11/2017] [Indexed: 02/06/2023]
Abstract
The Co-precipitation Crosslinking Dissolution technique (CCD-technique) allows a few-steps fabrication of particles composed of different biopolymers and bioactive agents under mild conditions. Morphology and properties of the fabricated biopolymer particles depend on the fabrication conditions, the nature of the biopolymers and additives, but also on the choice of the inorganic templates for co-precipitation. Here, we investigate the influence of an acidic biopolymer, hyaluronic acid (HA), on the formation of particles from bovine hemoglobin and bovine serum albumin applying co-precipitation with CaCO3 and MnCO3. CaCO3 templated biopolymer particles are almost spherical with particle size from 2 to 20 µm and protein entrapment efficiency from 13 to 77%. Presence of HA causes significant structural changes of the particles and decreasing protein entrapment efficiency. In contrast, MnCO3 templated particles exhibit uniform peanut shape and submicron size with remarkably high protein entrapment efficiency of nearly 100%. Addition of HA has no influence on the protein entrapment efficiency or on morphology and size of the particles. These effects can be attributed to the strong interaction of Mn2+ with proteins and much weaker interaction with HA. Therefore, entrapment efficiency, size and structure of biopolymer particles can be optimized by varying the mineral templates and additives.
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Affiliation(s)
- Yu Xiong
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Transfusion Medicine, Charitéplatz 1, 10117 Berlin, Germany.
| | - Radostina Georgieva
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Transfusion Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Axel Steffen
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Transfusion Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Kathrin Smuda
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Transfusion Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Hans Bäumler
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Transfusion Medicine, Charitéplatz 1, 10117 Berlin, Germany.
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