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Sanz-Horta R, Matesanz A, Gallardo A, Reinecke H, Jorcano JL, Acedo P, Velasco D, Elvira C. Technological advances in fibrin for tissue engineering. J Tissue Eng 2023; 14:20417314231190288. [PMID: 37588339 PMCID: PMC10426312 DOI: 10.1177/20417314231190288] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/11/2023] [Indexed: 08/18/2023] Open
Abstract
Fibrin is a promising natural polymer that is widely used for diverse applications, such as hemostatic glue, carrier for drug and cell delivery, and matrix for tissue engineering. Despite the significant advances in the use of fibrin for bioengineering and biomedical applications, some of its characteristics must be improved for suitability for general use. For example, fibrin hydrogels tend to shrink and degrade quickly after polymerization, particularly when they contain embedded cells. In addition, their poor mechanical properties and batch-to-batch variability affect their handling, long-term stability, standardization, and reliability. One of the most widely used approaches to improve their properties has been modification of the structure and composition of fibrin hydrogels. In this review, recent advances in composite fibrin scaffolds, chemically modified fibrin hydrogels, interpenetrated polymer network (IPN) hydrogels composed of fibrin and other synthetic or natural polymers are critically reviewed, focusing on their use for tissue engineering.
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Affiliation(s)
- Raúl Sanz-Horta
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - Ana Matesanz
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Department of Electronic Technology, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Alberto Gallardo
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - Helmut Reinecke
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
| | - José Luis Jorcano
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Pablo Acedo
- Department of Electronic Technology, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Diego Velasco
- Department of Bioengineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Carlos Elvira
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, Spanish National Research Council (ICTP-CSIC), Madrid, Spain
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Preparation and Characterization of Plasma-Derived Fibrin Hydrogels Modified by Alginate di-Aldehyde. Int J Mol Sci 2022; 23:ijms23084296. [PMID: 35457113 PMCID: PMC9029004 DOI: 10.3390/ijms23084296] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 12/04/2022] Open
Abstract
Fibrin hydrogels are one of the most popular scaffolds used in tissue engineering due to their excellent biological properties. Special attention should be paid to the use of human plasma-derived fibrin hydrogels as a 3D scaffold in the production of autologous skin grafts, skeletal muscle regeneration and bone tissue repair. However, mechanical weakness and rapid degradation, which causes plasma-derived fibrin matrices to shrink significantly, prompted us to improve their stability. In our study, plasma-derived fibrin was chemically bonded to oxidized alginate (alginate di-aldehyde, ADA) at 10%, 20%, 50% and 80% oxidation, by Schiff base formation, to produce natural hydrogels for tissue engineering applications. First, gelling time studies showed that the degree of ADA oxidation inhibits fibrin polymerization, which we associate with fiber increment and decreased fiber density; moreover, the storage modulus increased when increasing the final volume of CaCl2 (1% w/v) from 80 µL to 200 µL per milliliter of hydrogel. The contraction was similar in matrices with and without human primary fibroblasts (hFBs). In addition, proliferation studies with encapsulated hFBs showed an increment in cell viability in hydrogels with ADA at 10% oxidation at days 1 and 3 with 80 µL of CaCl2; by increasing this compound (CaCl2), the proliferation does not significantly increase until day 7. In the presence of 10% alginate oxidation, the proliferation results are similar to the control, in contrast to the sample with 20% oxidation whose proliferation decreases. Finally, the viability studies showed that the hFB morphology was maintained regardless of the degree of oxidation used; however, the quantity of CaCl2 influences the spread of the hFBs.
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Woodroof AE, Naughton GK, Wood FM, Christy RJ, Natesan S, Hickerson WL. Path to 'One and Done'. J Wound Care 2021; 30:794-802. [PMID: 34644136 DOI: 10.12968/jowc.2021.30.10.794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Gail K Naughton
- Founder and Scientific Advisor, Histogen, Inc., San Diego, CA, US
| | | | - Robert J Christy
- Supervisory Research Physiologist, Cross Functional Research Team, Burn and Soft Tissue Research, US Army Institute of Surgical Research, Ft. Sam Houston, TX, US
| | - Shanmugasundaram Natesan
- Research Scientist, Cross Functional Research Team, Burn and Soft Tissue Research, US Army Institute of Surgical Research, Ft. Sam Houston, TX, US
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Montero A, Atienza C, Elvira C, Jorcano JL, Velasco D. Hyaluronic acid-fibrin hydrogels show improved mechanical stability in dermo-epidermal skin substitutes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112352. [PMID: 34474900 DOI: 10.1016/j.msec.2021.112352] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 07/15/2021] [Accepted: 07/29/2021] [Indexed: 12/16/2022]
Abstract
Human plasma-derived bilayered skin substitutes have been successfully used by our group in different skin tissue engineering applications. However, several issues associated with their poor mechanical properties were observed, and they often resulted in rapid contraction and degradation. In this sense, hydrogels composed of plasma-derived fibrin and thiolated-hyaluronic acid (HA-SH, 0.05-0.2% w/v) crosslinked with poly(ethylene glycol) diacrylate (PEGDA, 2:1, 6:1, 10:1 and 14:1 mol of thiol to moles of acrylate) were developed to reduce the shrinking rates and enhance the mechanical properties of the plasma-derived matrices. Plasma/HA-SH-PEGDA hydrogels showed a decrease in the contraction behaviour ranging from 5% to 25% and an increase in Young's modulus. Furthermore, the results showed that a minimal amount of the added HA-SH was able to escape the plasma/HA-SH-PEGDA hydrogels after incubation in PBS. The results showed that the increase in rigidity of the matrices as well as the absence of adhesion cellular moieties in the second network of HA-SH/PEGDA, resulted in a decrease in contraction in the presence of the encapsulated primary human fibroblasts (hFBs), which may have been related to an overall decrease in proliferation of hFBs found for all hydrogels after 7 days with respect to the plasma control. The metabolic activity of hFB returned to the control levels at 14 days except for the 2:1 PEGDA crosslinking ratio. The metabolic activity of primary human keratinocytes (hKCs) seeded on the hydrogels showed a decrease when high amounts of HA-SH and PEGDA crosslinker were incorporated. Organotypic skins formed in vitro after 21 days with plasma/HA-SH-PEGDA hydrogels with an HA content of 0.05% w/v and a 2:1 crosslinking ratio were up to three times thicker than the plasma controls, evidencing a reduction in contraction, while they also showed better and more homogeneous keratin 10 (K10) expression in the supra-basal layer of the epidermis. Furthermore, filaggrin expression showed the formation of an enhanced stratum corneum for the constructs containing HA. These promising results indicate the potential of using these biomimetic hydrogels as in vitro skin models for pharmaceutical products and cosmetics and future work will elucidate their potential functionality for clinical treatment.
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Affiliation(s)
- Andrés Montero
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Spain
| | - Clara Atienza
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Spain
| | - Carlos Elvira
- Institute of Polymer Science and Technology, CSIC, Juan de la Cierva 3, Madrid 28006, Spain
| | - José Luis Jorcano
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
| | - Diego Velasco
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
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Elastin-Plasma Hybrid Hydrogels for Skin Tissue Engineering. Polymers (Basel) 2021; 13:polym13132114. [PMID: 34203144 PMCID: PMC8271496 DOI: 10.3390/polym13132114] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 11/23/2022] Open
Abstract
Dermo-epidermal equivalents based on plasma-derived fibrin hydrogels have been extensively studied for skin engineering. However, they showed rapid degradation and contraction over time and low mechanical properties which limit their reproducibility and lifespan. In order to achieve better mechanical properties, elasticity and biological properties, we incorporated a elastin-like recombinamer (ELR) network, based on two types of ELR, one modified with azide (SKS-N3) and other with cyclooctyne (SKS-Cyclo) chemical groups at molar ratio 1:1 at three different SKS (serine-lysine-serine sequence) concentrations (1, 3, and 5 wt.%), into plasma-derived fibrin hydrogels. Our results showed a decrease in gelation time and contraction, both in the absence and presence of the encapsulated human primary fibroblasts (hFBs), higher mechanical properties and increase in elasticity when SKSs content is equal or higher than 3%. However, hFBs proliferation showed an improvement when the lowest SKS content (1 wt.%) was used but started decreasing when increasing SKS concentration at day 14 with respect to the plasma control. Proliferation of human primary keratinocytes (hKCs) seeded on top of the hybrid-plasma hydrogels containing 1 and 3% of SKS showed no differences to plasma control and an increase in hKCs proliferation was observed for hybrid-plasma hydrogels containing 5 wt.% of SKS. These promising results showed the need to achieve a balance between the reduced contraction, the better mechanical properties and biological properties and indicate the potential of using this type of hydrogel as a testing platform for pharmaceutical products and cosmetics, and future work will elucidate their potential.
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Montero A, Quílez C, Valencia L, Girón P, Jorcano JL, Velasco D. Effect of Fibrin Concentration on the In Vitro Production of Dermo-Epidermal Equivalents. Int J Mol Sci 2021; 22:ijms22136746. [PMID: 34201667 PMCID: PMC8269027 DOI: 10.3390/ijms22136746] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/10/2021] [Accepted: 06/17/2021] [Indexed: 01/18/2023] Open
Abstract
Human plasma-derived bilayered skin substitutes were successfully used by our group to produce human-based in vitro skin models for toxicity, cosmetic, and pharmaceutical testing. However, mechanical weakness, which causes the plasma-derived fibrin matrices to contract significantly, led us to attempt to improve their stability. In this work, we studied whether an increase in fibrin concentration from 1.2 to 2.4 mg/mL (which is the useful fibrinogen concentration range that can be obtained from plasma) improves the matrix and, hence, the performance of the in vitro skin cultures. The results show that this increase in fibrin concentration indeed affected the mechanical properties by doubling the elastic moduli and the maximum load. A structural analysis indicated a decreased porosity for the 2.4 mg/mL hydrogels, which can help explain this mechanical behavior. The contraction was clearly reduced for the 2.4 mg/mL matrices, which also allowed for the growth and proliferation of primary fibroblasts and keratinocytes, although at a somewhat reduced rate compared to the 1.2 mg/mL gels. Finally, both concentrations of fibrin gave rise to organotypic skin cultures with a fully differentiated epidermis, although their lifespans were longer (25–35%) in cultures with more concentrated matrices, which improves their usefulness. These systems will allow the generation of much better in vitro skin models for the testing of drugs, cosmetics and chemicals, or even to “personalized” skin for the diagnosis or determination of the most effective treatment possible.
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Affiliation(s)
- Andrés Montero
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
| | - Cristina Quílez
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
| | - Leticia Valencia
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
| | - Paula Girón
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
| | - José Luis Jorcano
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
- Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain
- Correspondence: (J.L.J.); (D.V.)
| | - Diego Velasco
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28903 Madrid, Spain; (A.M.); (C.Q.); (L.V.); (P.G.)
- Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain
- Correspondence: (J.L.J.); (D.V.)
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Li X, Chen J, Xu Z, Zou Q, Yang L, Ma M, Shu L, He Z, Ye C. Osteoblastic differentiation of stem cells induced by graphene oxide-hydroxyapatite-alginate hydrogel composites and construction of tissue-engineered bone. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:125. [PMID: 33247818 DOI: 10.1007/s10856-020-06467-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
This study aimed to investigate the effect of graphene oxide (GO)-hydroxyapatite (HA)-sodium alginate (SA) composite application in the field of bone tissue engineering. Four scaffold groups were established (SA-HA, SA-HA-0.8%GO, SA-HA-1.0%GO and SA-HA-1.2%GO) and mixed with bone marrow mesenchymal stem cells (BMSCs). Hydrogel viscosity was measured at room temperature, and after freeze-drying and Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) to detect substance crystallinity, the printability of each hydrogel type was measured with a printing grid. Scanning electron microscopy (SEM) was used to observe the internal microstructure of the scaffolds and to evaluate the growth and proliferation of cells on the scaffold. A hollow cylinder was printed to compare the forming effect of the hydrogel bioinks, and cell-hydrogel composites were implanted under the skin of nude mice to observe the effect of the hydrogels on osteogenesis in vivo. Increased GO concentrations led to reduced scaffold degradation rates, increased viscosity, increased printability, increased mechanical properties, increased scaffold porosity and increased cell proliferation rates. In vivo experiments showed that hematoxylin and eosin (HE) staining, Alizarin red staining, alkaline phosphatase staining and collagen type I immunohistochemical staining increased as the implantation time increased. These results demonstrate that GO composites have high printability as bioinks and can be used for bioprinting of bone by altering the ratio of the different components.
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Affiliation(s)
- Xuanze Li
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Jiao Chen
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Zhe Xu
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Qiang Zou
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Long Yang
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Minxian Ma
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Liping Shu
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
- National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, 550004, Guiyang, China
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China
| | - Zhixu He
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China
| | - Chuan Ye
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China.
- Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, 550004, Guiyang, China.
- National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, 550004, Guiyang, China.
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, 550004, Guiyang, China.
- China Orthopaedic Regenerative Medicine Group (CORMed), 310000, Hangzhou, China.
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Clinical Translational Potential in Skin Wound Regeneration for Adipose-Derived, Blood-Derived, and Cellulose Materials: Cells, Exosomes, and Hydrogels. Biomolecules 2020; 10:biom10101373. [PMID: 32992554 PMCID: PMC7650547 DOI: 10.3390/biom10101373] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 12/13/2022] Open
Abstract
Acute and chronic skin wounds due to burns, pressure injuries, and trauma represent a substantial challenge to healthcare delivery with particular impacts on geriatric, paraplegic, and quadriplegic demographics worldwide. Nevertheless, the current standard of care relies extensively on preventive measures to mitigate pressure injury, surgical debridement, skin flap procedures, and negative pressure wound vacuum measures. This article highlights the potential of adipose-, blood-, and cellulose-derived products (cells, decellularized matrices and scaffolds, and exosome and secretome factors) as a means to address this unmet medical need. The current status of this research area is evaluated and discussed in the context of promising avenues for future discovery.
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Montero A, Acosta S, Hernández R, Elvira C, Jorcano JL, Velasco D. Contraction of fibrin-derived matrices and its implications for in vitro human skin bioengineering. J Biomed Mater Res A 2020; 109:500-514. [PMID: 32506782 DOI: 10.1002/jbm.a.37033] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 05/09/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022]
Abstract
It is well-known that fibroblasts play a fundamental role in the contraction of collagen and fibrin hydrogels when used in the production of in vitro bilayered skin substitutes. However, little is known about the contribution of other factors, such as the hydrogel matrix itself, on this contraction. In this work, we studied the contraction of plasma-derived fibrin hydrogels at different temperatures (4, 23, and 37°C) in an isotonic buffer (phosphate-buffered saline). These types of hydrogels presented a contraction of approximately 30% during the first 24 hr, following a similar kinetics irrespectively of the temperature. This kinetics continued in a slowed down manner to reach a plateau value of 40% contraction after 10-15 days. Contraction of commercial fibrinogen hydrogels was studied under similar conditions and the kinetics was completed after 8 hr, reaching values between 20 and 70% depending on the temperature. We attribute these substantial differences to a modulatory effect on the contraction due to plasma proteins which are initially embedded in, and progressively released from, the plasma-based hydrogels. The elastic modulus of hydrogels measured at a constant frequency decreased with increasing temperature in 7-day gels. Rheological measurements showed the absence of a strain-hardening behavior in the plasma-derived fibrin hydrogels. Finally, plasma-derived fibrin hydrogels with and without human primary fibroblast and keratinocytes were prepared in transwell inserts and their height measured over time. Both cellular and acellular gels showed a height reduction of 30% during the first 24 hr likely due to the above-mentioned intrinsic fibrin matrix contraction.
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Affiliation(s)
- Andrés Montero
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Sonia Acosta
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
| | - Rebeca Hernández
- Institute of Polymer Science and Technology, CSIC, Madrid, Spain
| | - Carlos Elvira
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, CSIC, Madrid, Spain
| | - José Luis Jorcano
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain.,Division of Epithelial Biomedicine, CIEMAT, Madrid, Spain
| | - Diego Velasco
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), Madrid, Spain
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