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Wein S, Schemmer C, Al Enezy-Ulbrich MA, Jung SA, Rütten S, Kühnel M, Jonigk D, Jahnen-Dechent W, Pich A, Neuss S. Fibrin-Based Hydrogels with Reactive Amphiphilic Copolymers for Mechanical Adjustments Allow for Capillary Formation in 2D and 3D Environments. Gels 2024; 10:182. [PMID: 38534600 DOI: 10.3390/gels10030182] [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: 02/15/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024] Open
Abstract
This study focuses on enhancing controllable fibrin-based hydrogels for tissue engineering, addressing existing weaknesses. By integrating a novel copolymer, we improved the foundation for cell-based angiogenesis with adaptable structural features. Tissue engineering often faces challenges like waste disposal and nutrient supply beyond the 200 µm diffusion limit. Angiogenesis breaks through this limitation, allowing the construction of larger constructs. Our innovative scaffold combination significantly boosts angiogenesis, resulting in longer branches and more capillary network junctions. The copolymer attached to fibrin fibers enables precise adjustment of hydrogel mechanical dynamic properties for specific applications. Our material proves effective for angiogenesis, even under suppression factors like suramin. In our study, we prepared fibrin-based hydrogels with and without the copolymer PVP12400-co-GMA10mol%. Using a co-culture system of human umbilical vein endothelial cells (HUVEC) and mesenchymal stem cells (MSC), we analyzed angiogenetic behavior on and within the modified hydrogels. Capillary-like structures were reproducibly formed on different surfaces, demonstrating the general feasibility of three-dimensional endothelial cell networks in fibrin-based hydrogels. This highlights the biomaterial's suitability for in vitro pre-vascularization of biohybrid implants.
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Affiliation(s)
- Svenja Wein
- Helmholtz Institute for Biomedical Engineering, BioInterface Group, RWTH Aachen University, Pauwelsstrasse 20, 52074 Aachen, Germany
- Institute of Pathology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Carina Schemmer
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
| | - Miriam Aischa Al Enezy-Ulbrich
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Shannon Anna Jung
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Stephan Rütten
- Electron Microscopic Facility, University Clinics, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Mark Kühnel
- Institute of Pathology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Danny Jonigk
- Institute of Pathology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Wilhelm Jahnen-Dechent
- Helmholtz Institute for Biomedical Engineering, BioInterface Group, RWTH Aachen University, Pauwelsstrasse 20, 52074 Aachen, Germany
| | - Andrij Pich
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Sabine Neuss
- Helmholtz Institute for Biomedical Engineering, BioInterface Group, RWTH Aachen University, Pauwelsstrasse 20, 52074 Aachen, Germany
- Institute of Pathology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
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2
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Rojek KO, Wrzos A, Żukowski S, Bogdan M, Lisicki M, Szymczak P, Guzowski J. Long-term day-by-day tracking of microvascular networks sprouting in fibrin gels: From detailed morphological analyses to general growth rules. APL Bioeng 2024; 8:016106. [PMID: 38327714 PMCID: PMC10849774 DOI: 10.1063/5.0180703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/04/2024] [Indexed: 02/09/2024] Open
Abstract
Understanding and controlling of the evolution of sprouting vascular networks remains one of the basic challenges in tissue engineering. Previous studies on the vascularization dynamics have typically focused only on the phase of intense growth and often lacked spatial control over the initial cell arrangement. Here, we perform long-term day-by-day analysis of tens of isolated microvasculatures sprouting from endothelial cell-coated spherical beads embedded in an external fibrin gel. We systematically study the topological evolution of the sprouting networks over their whole lifespan, i.e., for at least 14 days. We develop a custom image analysis toolkit and quantify (i) the overall length and area of the sprouts, (ii) the distributions of segment lengths and branching angles, and (iii) the average number of branch generations-a measure of network complexity. We show that higher concentrations of vascular endothelial growth factor (VEGF) lead to earlier sprouting and more branched networks, yet without significantly affecting the speed of growth of individual sprouts. We find that the mean branching angle is weakly dependent on VEGF and typically in the range of 60°-75°, suggesting that, by comparison with the available diffusion-limited growth models, the bifurcating tips tend to follow local VEGF gradients. At high VEGF concentrations, we observe exponential distributions of segment lengths, which signify purely stochastic branching. Our results-due to their high statistical relevance-may serve as a benchmark for predictive models, while our new image analysis toolkit, offering unique features and high speed of operation, could be exploited in future angiogenic drug tests.
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Affiliation(s)
- Katarzyna O. Rojek
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Antoni Wrzos
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | | | - Michał Bogdan
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Maciej Lisicki
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | - Piotr Szymczak
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | - Jan Guzowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
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3
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Longoni A, Major GS, Jiang S, Farrugia BL, Kieser DC, Woodfield TBF, Rnjak-Kovacina J, Lim KS. Pristine gelatin incorporation as a strategy to enhance the biofunctionality of poly(vinyl alcohol)-based hydrogels for tissue engineering applications. Biomater Sci 2023; 12:134-150. [PMID: 37933486 DOI: 10.1039/d3bm01172k] [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: 11/08/2023]
Abstract
Synthetic polymers, such as poly(vinyl alcohol) (PVA), are popular biomaterials for the fabrication of hydrogels for tissue engineering and regenerative medicine (TERM) applications, as they provide excellent control over the physico-chemical properties of the hydrogel. However, their bioinert nature is known to limit cell-biomaterial interactions by hindering cell infiltration, blood vessel recruitment and potentially limiting their integration with the host tissue. Efforts in the field have therefore focused on increasing the biofunctionality of synthetic hydrogels, without limiting the advantages associated with their tailorability and controlled release capacity. The aim of this study was to investigate the suitability of pristine gelatin to enhance the biofunctionality of tyraminated PVA (PVA-Tyr) hydrogels, by promoting cell infiltration and host blood vessel recruitment for TERM applications. Pure PVA-Tyr hydrogels and PVA-Tyr hydrogels incorporated with vascular endothelial growth factor (VEGF), a well-known pro-angiogenic stimulus, were used for comparison. Incorporating increasing concentrations of VEGF (0.01-10 μg mL-1) or gelatin (0.01-5 wt%) did not influence the physical properties of PVA-Tyr hydrogels. However, their presence within the polymer network (>0.1 μg mL-1 VEGF and >0.1 wt% gelatin) promoted endothelial cell interactions with the hydrogels. The covalent binding of unmodified gelatin or VEGF to the PVA-Tyr network did not hamper their inherent bioactivity, as they both promoted angiogenesis in a chick chorioallantoic membrane (CAM) assay, performing comparably with the unbound VEGF control. When the PVA-Tyr hydrogels were implanted subcutaneously in mice, it was observed that cell infiltration into the hydrogels was possible in the absence of gelatin or VEGF at 1- or 3-weeks post-implantation, highlighting a clear difference between in vitro an in vivo cell-biomaterial interaction. Nevertheless, the presence of gelatin or VEGF was necessary to enhance blood vessel recruitment and infiltration, although no significant difference was observed between these two biological molecules. Overall, this study highlights the potential of gelatin as a standalone pro-angiogenic cue to enhance biofunctionality of synthetic hydrogels and provides promise for their use in a variety of TERM applications.
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Affiliation(s)
- Alessia Longoni
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand.
| | - Gretel S Major
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand.
| | - Shaoyuan Jiang
- Graduate School of Biomedical Engineering, UNSW Sydney, Sydney 2052, Australia
| | - Brooke L Farrugia
- School of Biomedical Engineering, University of Melbourne, Australia
| | - David C Kieser
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand.
| | - Tim B F Woodfield
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand.
| | | | - Khoon S Lim
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand.
- Light-Activated Biomaterials Group, School of Medical Sciences, University of Sydney, Australia
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Pérez-Gutiérrez L, Ferrara N. Biology and therapeutic targeting of vascular endothelial growth factor A. Nat Rev Mol Cell Biol 2023; 24:816-834. [PMID: 37491579 DOI: 10.1038/s41580-023-00631-w] [Citation(s) in RCA: 53] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2023] [Indexed: 07/27/2023]
Abstract
The formation of new blood vessels, called angiogenesis, is an essential pathophysiological process in which several families of regulators have been implicated. Among these, vascular endothelial growth factor A (VEGFA; also known as VEGF) and its two tyrosine kinase receptors, VEGFR1 and VEGFR2, represent a key signalling pathway mediating physiological angiogenesis and are also major therapeutic targets. VEGFA is a member of the gene family that includes VEGFB, VEGFC, VEGFD and placental growth factor (PLGF). Three decades after its initial isolation and cloning, VEGFA is arguably the most extensively investigated signalling system in angiogenesis. Although many mediators of angiogenesis have been identified, including members of the FGF family, angiopoietins, TGFβ and sphingosine 1-phosphate, all current FDA-approved anti-angiogenic drugs target the VEGF pathway. Anti-VEGF agents are widely used in oncology and, in combination with chemotherapy or immunotherapy, are now the standard of care in multiple malignancies. Anti-VEGF drugs have also revolutionized the treatment of neovascular eye disorders such as age-related macular degeneration and ischaemic retinal disorders. In this Review, we emphasize the molecular, structural and cellular basis of VEGFA action as well as recent findings illustrating unexpected interactions with other pathways and provocative reports on the role of VEGFA in regenerative medicine. We also discuss clinical and translational aspects of VEGFA. Given the crucial role that VEGFA plays in regulating angiogenesis in health and disease, this molecule is largely the focus of this Review.
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Affiliation(s)
- Lorena Pérez-Gutiérrez
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
- Department of Ophthalmology, University of California San Diego, La Jolla, CA, USA
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Napoleone Ferrara
- Department of Pathology, University of California San Diego, La Jolla, CA, USA.
- Department of Ophthalmology, University of California San Diego, La Jolla, CA, USA.
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA.
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5
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Ding X, Fan L, Wang L, Zhou M, Wang Y, Zhao Y. Designing self-healing hydrogels for biomedical applications. MATERIALS HORIZONS 2023; 10:3929-3947. [PMID: 37577809 DOI: 10.1039/d3mh00891f] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Self-healing hydrogels have emerged as the most promising alternatives to conventional brittle hydrogels used in the biomedical field due to the features of long-term stability and durability. However, the incompatibility between the fast self-healing property and enough mechanical strength of hydrogels remains a challenge. Therefore, hydrogels that possess not only mechanical toughness but also autonomous self-healing capacity are sought after. This review presents a comprehensive summary of the latest self-healing mechanisms. Specifically, we review various systems based on dynamic bonds, ranging from dynamic covalent bonds to non-covalent bonds. Additionally, this review presents different characterization methods for self-healing hydrogels, and also highlights their potential applications in the biomedical field, such as tissue engineering, drug delivery, cell therapy, and wound dressing. Furthermore, this review aims to provide valuable guidance for constructing diverse self-healing hydrogels with tailored functions.
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Affiliation(s)
- Xiaoya Ding
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China.
| | - Lu Fan
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China.
| | - Li Wang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China.
| | - Min Zhou
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
| | - Yongxiang Wang
- Department of Orthopedics, The Yangzhou Clinical Medical College of Xuzhou Medical University, Yangzhou, 225001, China.
| | - Yuanjin Zhao
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China.
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Beheshtizadeh N, Gharibshahian M, Bayati M, Maleki R, Strachan H, Doughty S, Tayebi L. Vascular endothelial growth factor (VEGF) delivery approaches in regenerative medicine. Biomed Pharmacother 2023; 166:115301. [PMID: 37562236 DOI: 10.1016/j.biopha.2023.115301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/28/2023] [Accepted: 08/05/2023] [Indexed: 08/12/2023] Open
Abstract
The utilization of growth factors in the process of tissue regeneration has garnered significant interest and has been the subject of extensive research. However, despite the fervent efforts invested in recent clinical trials, a considerable number of these studies have produced outcomes that are deemed unsatisfactory. It is noteworthy that the trials that have yielded the most satisfactory outcomes have exhibited a shared characteristic, namely, the existence of a mechanism for the regulated administration of growth factors. Despite the extensive exploration of drug delivery vehicles and their efficacy in delivering certain growth factors, the development of a reliable predictive approach for the delivery of delicate growth factors like Vascular Endothelial Growth Factor (VEGF) remains elusive. VEGF plays a crucial role in promoting angiogenesis; however, the administration of VEGF demands a meticulous approach as it necessitates precise localization and transportation to a specific target tissue. This process requires prolonged and sustained exposure to a low concentration of VEGF. Inaccurate administration of drugs, either through off-target effects or inadequate delivery, may heighten the risk of adverse reactions and potentially result in tumorigenesis. At present, there is a scarcity of technologies available for the accurate encapsulation of VEGF and its subsequent sustained and controlled release. The objective of this review is to present and assess diverse categories of VEGF administration mechanisms. This paper examines various systems, including polymeric, liposomal, hydrogel, inorganic, polyplexes, and microfluidic, and evaluates the appropriate dosage of VEGF for multiple applications.
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Affiliation(s)
- Nima Beheshtizadeh
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Iran; Regenerative Medicine group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Maliheh Gharibshahian
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran; Regenerative Medicine group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mohammad Bayati
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Reza Maleki
- Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 33535111, Tehran, Iran.
| | - Hannah Strachan
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA
| | - Sarah Doughty
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA
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7
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Fuenteslópez CV, Thompson MS, Ye H. Development and Optimisation of Hydrogel Scaffolds for Microvascular Network Formation. Bioengineering (Basel) 2023; 10:964. [PMID: 37627849 PMCID: PMC10451297 DOI: 10.3390/bioengineering10080964] [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: 07/01/2023] [Revised: 08/04/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Traumatic injuries are a major cause of morbidity and mortality worldwide; however, there is limited research on microvascular traumatic injuries. To address this gap, this research aims to develop and optimise an in vitro construct for traumatic injury research at the microvascular level. Tissue engineering constructs were created using a range of polymers (collagen, fibrin, and gelatine), solvents (PBS, serum-free endothelial media, and MES/NaCl buffer), and concentrations (1-5% w/v). Constructs created from these hydrogels and HUVECs were evaluated to identify the optimal composition in terms of cell proliferation, adhesion, migration rate, viability, hydrogel consistency and shape retention, and tube formation. Gelatine hydrogels were associated with a lower cell adhesion, whereas fibrin and collagen ones displayed similar or better results than the control, and collagen hydrogels exhibited poor shape retention; fibrin scaffolds, particularly at high concentrations, displayed good hydrogel consistency. Based on the multipronged evaluation, fibrin hydrogels in serum-free media at 3 and 5% w/v were selected for further experimental work and enabled the formation of interconnected capillary-like networks. The networks formed in both hydrogels displayed a similar architecture in terms of the number of segments (10.3 ± 3.21 vs. 9.6 ± 3.51) and diameter (8.6446 ± 3.0792 μm vs. 7.8599 ± 2.3794 μm).
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Affiliation(s)
| | | | - Hua Ye
- Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK; (C.V.F.); (M.S.T.)
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Zhong JX, Raghavan P, Desai TA. Harnessing Biomaterials for Immunomodulatory-Driven Tissue Engineering. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2022; 9:224-239. [PMID: 37333620 PMCID: PMC10272262 DOI: 10.1007/s40883-022-00279-6] [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: 05/03/2022] [Revised: 08/08/2022] [Accepted: 09/07/2022] [Indexed: 11/29/2022]
Abstract
Abstract The immune system plays a crucial role during tissue repair and wound healing processes. Biomaterials have been leveraged to assist in this in situ tissue regeneration process to dampen the foreign body response by evading or suppressing the immune system. An emerging paradigm within regenerative medicine is to use biomaterials to influence the immune system and create a pro-reparative microenvironment to instigate endogenously driven tissue repair. In this review, we discuss recent studies that focus on immunomodulation of innate and adaptive immune cells for tissue engineering applications through four biomaterial-based mechanisms of action: biophysical cues, chemical modifications, drug delivery, and sequestration. These materials enable augmented regeneration in various contexts, including vascularization, bone repair, wound healing, and autoimmune regulation. While further understanding of immune-material interactions is needed to design the next generation of immunomodulatory biomaterials, these materials have already demonstrated great promise for regenerative medicine. Lay Summary The immune system plays an important role in tissue repair. Many biomaterial strategies have been used to promote tissue repair, and recent work in this area has looked into the possibility of doing repair by tuning. Thus, we examined the literature for recent works showcasing the efficacy of these approaches in animal models of injuries. In these studies, we found that biomaterials successfully tuned the immune response and improved the repair of various tissues. This highlights the promise of immune-modulating material strategies to improve tissue repair.
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Affiliation(s)
- Justin X. Zhong
- UC Berkeley – UCSF Graduate Program in Bioengineering, San Francisco, CA 94143 USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA 94143 USA
| | - Preethi Raghavan
- UC Berkeley – UCSF Graduate Program in Bioengineering, San Francisco, CA 94143 USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA 94143 USA
| | - Tejal A. Desai
- UC Berkeley – UCSF Graduate Program in Bioengineering, San Francisco, CA 94143 USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA 94143 USA
- Department of Bioengineering, University of California, Berkeley, CA 94720 USA
- School of Engineering, Brown University, Providence, RI 02912 USA
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9
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Terrassoux L, Claux H, Bacari S, Meignan S, Furlan A. A Bloody Conspiracy. Blood Vessels and Immune Cells in the Tumor Microenvironment. Cancers (Basel) 2022; 14:cancers14194581. [PMID: 36230504 PMCID: PMC9558972 DOI: 10.3390/cancers14194581] [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: 08/18/2022] [Revised: 09/10/2022] [Accepted: 09/15/2022] [Indexed: 11/29/2022] Open
Abstract
Simple Summary The tumor microenvironment has risen over the last years as a significant contributor to the failure of antitumoral strategies due to its numerous pro-tumorigenic activities. In this review, we focused on two features of this microenvironment, namely angiogenesis and immunity, which have been the targets of therapies to tackle tumors via its microenvironmental part over the last decade. Increasing our knowledge of the complex interactions within this ecosystem is mandatory to optimize these therapeutic approaches. The development of innovative experimental models is of great help in reaching this goal. Abstract Cancer progression occurs in concomitance with a profound remodeling of the cellular microenvironment. Far from being a mere passive event, the re-orchestration of interactions between the various cell types surrounding tumors highly contributes to the progression of the latter. Tumors notably recruit and stimulate the sprouting of new blood vessels through a process called neo-angiogenesis. Beyond helping the tumor cope with an increased metabolic demand associated with rapid growth, this also controls the metastatic dissemination of cancer cells and the infiltration of immune cells in the tumor microenvironment. To decipher this critical interplay for the clinical progression of tumors, the research community has developed several valuable models in the last decades. This review offers an overview of the various instrumental solutions currently available, including microfluidic chips, co-culture models, and the recent rise of organoids. We highlight the advantages of each technique and the specific questions they can address to better understand the tumor immuno-angiogenic ecosystem. Finally, we discuss this development field’s fundamental and applied perspectives.
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Affiliation(s)
- Lisa Terrassoux
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
- Tumorigenesis and Resistance to Treatment Unit, Centre Oscar Lambret, F-59000 Lille, France
| | - Hugo Claux
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
- Tumorigenesis and Resistance to Treatment Unit, Centre Oscar Lambret, F-59000 Lille, France
| | - Salimata Bacari
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
- Tumorigenesis and Resistance to Treatment Unit, Centre Oscar Lambret, F-59000 Lille, France
| | - Samuel Meignan
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
- Tumorigenesis and Resistance to Treatment Unit, Centre Oscar Lambret, F-59000 Lille, France
| | - Alessandro Furlan
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
- Tumorigenesis and Resistance to Treatment Unit, Centre Oscar Lambret, F-59000 Lille, France
- Correspondence:
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10
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Demcisakova Z, Luptakova L, Tirpakova Z, Kvasilova A, Medvecky L, De Spiegelaere W, Petrovova E. Evaluation of Angiogenesis in an Acellular Porous Biomaterial Based on Polyhydroxybutyrate and Chitosan Using the Chicken Ex Ovo Chorioallantoic Membrane Model. Cancers (Basel) 2022; 14:cancers14174194. [PMID: 36077732 PMCID: PMC9454696 DOI: 10.3390/cancers14174194] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary The chorioallantoic membrane (CAM) is an avian extraembryonic membrane widely used as an experimental assay to study angiogenesis and its inhibition in response to tissues, cells, or soluble factors. In recent years, the CAM has become popular in scientific studies focused on the use of its potential for the study of biocompatibility of materials for regenerative strategies and tissue engineering applications. Great research efforts are being made to develop innovative biomaterials able to treat hard tissue defects, including diseases such as a bone cancer. In this article, we describe an approach to detect the formation of blood vessels inside the porous acellular biopolymer polyhydroxybutyrate/chitosan (PHB/CHIT) scaffold using the CAM assay as an in vivo alternative animal model, including macroscopic, histological, immunohistochemical, and molecular evaluation of the biocompatibility. Abstract The chorioallantoic membrane (CAM) is a highly vascularized avian extraembryonic membrane widely used as an in vivo model to study angiogenesis and its inhibition in response to tissues, cells, or soluble factors. In recent years, the use of CAM has become an integral part of the biocompatibility testing process for developing biomaterials intended for regenerative strategies and tissue engineering applications. In this study, we used the chicken ex ovo CAM assay to investigate the angiogenic potential of innovative acellular biopolymer polyhydroxybutyrate/chitosan (PHB/CHIT) scaffold, which is intended for the treatment of hard tissue defects, depending on treatment with pro- and anti-angiogenic substances. On embryonic day (ED) 7, the experimental biomaterials were placed on the CAM alone or soaked in vascular endothelial growth factor (VEGF-A), saline solution (PHY), or tyrosine kinase inhibitor (SU5402). After 72 h, the formation of vessels was analyzed in the surrounding area of the scaffold and inside the pores of the implants, using markers of embryonic endothelium (WGA, SNA), myofibroblasts (α-SMA), and macrophages (KUL-01). The morphological and histochemical analysis showed strong angiogenic potential of untreated scaffolds without additional effect of the angiogenic factor, VEGF-A. The lowest angiogenic potential was observed in scaffolds soaked with SU5402. Gene expression of pro-angiogenic growth factors, i.e., VEGF-A, ANG-2, and VE-CAD, was upregulated in untreated scaffolds after 72 h, indicating a pro-angiogenic environment. We concluded that the PHB/CHIT has a strong endogenous angiogenic potential and could be promising biomaterial for the treatment of hard tissue defects.
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Affiliation(s)
- Zuzana Demcisakova
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 04181 Kosice, Slovakia
- Correspondence: (Z.D.); (E.P.)
| | - Lenka Luptakova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 04181 Kosice, Slovakia
| | - Zuzana Tirpakova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 04181 Kosice, Slovakia
| | - Alena Kvasilova
- Institute of Anatomy, Charles University, U Nemocnice 3, 12800 Prague, Czech Republic
| | - Lubomir Medvecky
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 04181 Kosice, Slovakia
- Institute of Materials Research, The Slovak Academy of Sciences, Watsonova 1935/47, 04001 Kosice, Slovakia
| | - Ward De Spiegelaere
- Laboratory of Veterinary Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Eva Petrovova
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 04181 Kosice, Slovakia
- Correspondence: (Z.D.); (E.P.)
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11
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Shokrani H, Shokrani A, Sajadi SM, Seidi F, Mashhadzadeh AH, Rabiee N, Saeb MR, Aminabhavi T, Webster TJ. Cell-Seeded Biomaterial Scaffolds: The Urgent Need for Unanswered Accelerated Angiogenesis. Int J Nanomedicine 2022; 17:1035-1068. [PMID: 35309965 PMCID: PMC8927652 DOI: 10.2147/ijn.s353062] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/22/2022] [Indexed: 12/12/2022] Open
Abstract
One of the most arduous challenges in tissue engineering is neovascularization, without which there is a lack of nutrients delivered to a target tissue. Angiogenesis should be completed at an optimal density and within an appropriate period of time to prevent cell necrosis. Failure to meet this challenge brings about poor functionality for the tissue in comparison with the native tissue, extensively reducing cell viability. Prior studies devoted to angiogenesis have provided researchers with some biomaterial scaffolds and cell choices for angiogenesis. For example, while most current angiogenesis approaches require a variety of stimulatory factors ranging from biomechanical to biomolecular to cellular, some other promising stimulatory factors have been underdeveloped (such as electrical, topographical, and magnetic). When it comes to choosing biomaterial scaffolds in tissue engineering for angiogenesis, key traits rush to mind including biocompatibility, appropriate physical and mechanical properties (adhesion strength, shear stress, and malleability), as well as identifying the appropriate biomaterial in terms of stability and degradation profile, all of which may leave essential trace materials behind adversely influencing angiogenesis. Nevertheless, the selection of the best biomaterial and cells still remains an area of hot dispute as such previous studies have not sufficiently classified, integrated, or compared approaches. To address the aforementioned need, this review article summarizes a variety of natural and synthetic scaffolds including hydrogels that support angiogenesis. Furthermore, we review a variety of cell sources utilized for cell seeding and influential factors used for angiogenesis with a concentrated focus on biomechanical factors, with unique stimulatory factors. Lastly, we provide a bottom-to-up overview of angiogenic biomaterials and cell selection, highlighting parameters that need to be addressed in future studies.
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Affiliation(s)
- Hanieh Shokrani
- Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Amirhossein Shokrani
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - S Mohammad Sajadi
- Department of Nutrition, Cihan University-Erbil, Erbil, 625, Iraq
- Department of Phytochemistry, SRC, Soran University, Soran, KRG, 624, Iraq
- Correspondence: S Mohammad Sajadi; Navid Rabiee, Email ; ;
| | - Farzad Seidi
- Jiangsu Co–Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Amin Hamed Mashhadzadeh
- Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Navid Rabiee
- Department of Physics, Sharif University of Technology, Tehran, Iran
- School of Engineering, Macquarie University, Sydney, New South Wales, 2109, Australia
| | - Mohammad Reza Saeb
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Tejraj Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India
- Department of Chemistry, Karnatak University, Dharwad, 580 003, India
| | - Thomas J Webster
- School of Health Sciences and Biomedical Engineering, Hebei University, Tianjin, People’s Republic of China
- Center for Biomaterials, Vellore Institute of Technology, Vellore, India
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12
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Nair RV, Farrukh A, del Campo A. Light-Regulated Angiogenesis via a Phototriggerable VEGF Peptidomimetic. Adv Healthc Mater 2021; 10:e2100488. [PMID: 34110713 DOI: 10.1002/adhm.202100488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/06/2021] [Indexed: 12/31/2022]
Abstract
The application of growth factor based therapies in regenerative medicine is limited by the high cost, fast degradation kinetics, and the multiple functions of these molecules in the cell, which requires regulated delivery to minimize side effects. Here a photoactivatable peptidomimetic of the vascular endothelial growth factor (VEGF) that allows the light-controlled presentation of angiogenic signals to endothelial cells embedded in hydrogel matrices is presented. A photoresponsive analog of the 15-mer peptidomimetic Ac-KLTWQELYQLKYKGI-NH2 (abbreviated P QK) is prepared by introducing a 3-(4,5-dimethoxy-2-nitrophenyl)-2-butyl (DMNPB) photoremovable protecting group at the Trp4 residue. This modification inhibits the angiogenic potential of the peptide temporally. Light exposure of P QK modified hydrogels provide instructive cues to embedded endothelial cells and promote angiogenesis at the illuminated sites of the 3D culture, with the possibility of spatial control. P QK modified photoresponsive biomaterials offer an attractive approach for the dosed delivery and spatial control of pro-angiogenic factors to support regulated vascular growth by just using light as an external trigger.
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Affiliation(s)
- Roshna V. Nair
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
| | - Aleeza Farrukh
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
| | - Aránzazu del Campo
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
- Chemistry Department Saarland University Saarbrücken 66123 Germany
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13
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Translational Studies on the Potential of a VEGF Nanoparticle-Loaded Hyaluronic Acid Hydrogel. Pharmaceutics 2021; 13:pharmaceutics13060779. [PMID: 34067451 PMCID: PMC8224549 DOI: 10.3390/pharmaceutics13060779] [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: 04/19/2021] [Revised: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022] Open
Abstract
Heart failure has a five-year mortality rate approaching 50%. Inducing angiogenesis following a myocardial infarction is hypothesized to reduce cardiomyocyte death and tissue damage, thereby preventing heart failure. Herein, a novel nano-in-gel delivery system for vascular endothelial growth factor (VEGF), composed of star-shaped polyglutamic acid-VEGF nanoparticles in a tyramine-modified hyaluronic acid hydrogel (nano-VEGF-HA-TA), is investigated. The ability of the nano-VEGF-HA-TA system to induce angiogenesis is assessed in vivo using a chick chorioallantoic membrane model (CAM). The formulation is then integrated with a custom-made, clinically relevant catheter suitable for minimally invasive endocardial delivery and the effect of injection on hydrogel properties is examined. Nano-VEGF-HA-TA is biocompatible on a CAM assay and significantly improves blood vessel branching (p < 0.05) and number (p < 0.05) compared to a HA-TA hydrogel without VEGF. Nano-VEGF-HA-TA is successfully injected through a 1.2 m catheter, without blocking or breaking the catheter and releases VEGF for 42 days following injection in vitro. The released VEGF retains its bioactivity, significantly improving total tubule length on a Matrigel® assay and human umbilical vein endothelial cell migration on a Transwell® migration assay. This VEGF-nano in a HA-TA hydrogel delivery system is successfully integrated with an appropriate device for clinical use, demonstrates promising angiogenic properties in vivo and is suitable for further clinical translation.
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14
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Zhao J, Feng Y. Surface Engineering of Cardiovascular Devices for Improved Hemocompatibility and Rapid Endothelialization. Adv Healthc Mater 2020; 9:e2000920. [PMID: 32833323 DOI: 10.1002/adhm.202000920] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/18/2020] [Indexed: 12/13/2022]
Abstract
Cardiovascular devices have been widely applied in the clinical treatment of cardiovascular diseases. However, poor hemocompatibility and slow endothelialization on their surface still exist. Numerous surface engineering strategies have mainly sought to modify the device surface through physical, chemical, and biological approaches to improve surface hemocompatibility and endothelialization. The alteration of physical characteristics and pattern topographies brings some hopeful outcomes and plays a notable role in this respect. The chemical and biological approaches can provide potential signs of success in the endothelialization of vascular device surfaces. They usually involve therapeutic drugs, specific peptides, adhesive proteins, antibodies, growth factors and nitric oxide (NO) donors. The gene engineering can enhance the proliferation, growth, and migration of vascular cells, thus boosting the endothelialization. In this review, the surface engineering strategies are highlighted and summarized to improve hemocompatibility and rapid endothelialization on the cardiovascular devices. The potential outlook is also briefly discussed to help guide endothelialization strategies and inspire further innovations. It is hoped that this review can assist with the surface engineering of cardiovascular devices and promote future advancements in this emerging research field.
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Affiliation(s)
- Jing Zhao
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
| | - Yakai Feng
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Yaguan Road 135 Tianjin 300350 P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education) Tianjin University Tianjin 300072 P. R. China
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15
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The use of the chick embryo CAM assay in the study of angiogenic activiy of biomaterials. Microvasc Res 2020; 131:104026. [PMID: 32505611 DOI: 10.1016/j.mvr.2020.104026] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/30/2020] [Accepted: 06/03/2020] [Indexed: 02/08/2023]
Abstract
The chick embryo chorioallantoic membrane (CAM) is a highly vascularized extraembryonic membrane, which carries out several functions during embryonic development, including exchange of respiratory gases, calcium transport from the eggshell, acid-base homeostasis in the embryo, and ion and water reabsorption from the allantoic fluid. Due to its easy accessibility, affordability and given that it constitutes an immunodeficient environment, CAM has been used as an experimental model for >50 years and in particular it has been broadly used to study angiogenesis and anti-angiogenesis. This review article describes the use of the CAM assay as a valuable assay to test angiogenic activity of biomaterials in vivo before they are further investigated in animal models. In this context, the use of CAM has become an integral part of the biocompatibility testing process for developing potential biomaterials.
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16
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Shahabipour F, Ashammakhi N, Oskuee RK, Bonakdar S, Hoffman T, Shokrgozar MA, Khademhosseini A. Key components of engineering vascularized 3-dimensional bioprinted bone constructs. Transl Res 2020; 216:57-76. [PMID: 31526771 DOI: 10.1016/j.trsl.2019.08.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 12/16/2022]
Abstract
Vascularization has a pivotal role in engineering successful tissue constructs. However, it remains a major hurdle of bone tissue engineering, especially in clinical applications for the treatment of large bone defects. Development of vascularized and clinically-relevant engineered bone substitutes with sufficient blood supply capable of maintaining implant viability and supporting subsequent host tissue integration remains a major challenge. Since only cells that are 100-200 µm from blood vessels can receive oxygen through diffusion, engineered constructs that are thicker than 400 µm face a challenging oxygenation problem. Following implantation in vivo, spontaneous ingrowth of capillaries in thick engineered constructs is too slow. Thus, it is critical to provide optimal conditions to support vascularization in engineered bone constructs. To achieve this, an in-depth understanding of the mechanisms of angiogenesis and bone development is required. In addition, it is also important to mimic the physiological milieu of native bone to fabricate more successful vascularized bone constructs. Numerous applications of engineered vascularization with cell-and/or microfabrication-based approaches seek to meet these aims. Three-dimensional (3D) printing promises to create patient-specific bone constructs in the future. In this review, we discuss the major components of fabricating vascularized 3D bioprinted bone constructs, analyze their related challenges, and highlight promising future trends.
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Affiliation(s)
- Fahimeh Shahabipour
- National cell bank of Iran, Pasteur Institute of Iran, Tehran, Iran; Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, California; California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, California; Department of Bioengineering, University of California, Los Angeles, Los Angeles, California
| | - Nureddin Ashammakhi
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, California; California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, California; Department of Bioengineering, University of California, Los Angeles, Los Angeles, California; Department of Radiological Sciences, University of California, Los Angeles, Los Angeles, California
| | - Reza K Oskuee
- Targeted Drug Delivery Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shahin Bonakdar
- National cell bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Tyler Hoffman
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, California; California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, California; Department of Bioengineering, University of California, Los Angeles, Los Angeles, California
| | | | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, California; California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, California; Department of Bioengineering, University of California, Los Angeles, Los Angeles, California; Department of Radiological Sciences, University of California, Los Angeles, Los Angeles, California; Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California.
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17
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Abstract
The current chapter highlights the use of chorioallantoic membrane (CAM) of fertilized chicken egg for the characterization of nanoparticles applied in cancer nanomedicine. The CAM assay represents a promising alternative to mouse models in term of costs, ease of use, rapidity and ethical issues in particular for the screening of nanoformulations. Hence, the features of nanoparticles including blood retention, biocompatibility, active targeting or tumor accumulation, angiogenic activity, drug delivery and tumor elimination might be simply evaluated via the CAM model. In particular, in this model, embryo organs and morphology, CAM vasculature and blood cells, transplanted tumors on CAM were typically monitored and used for the evaluation of the nanomaterials. With the above advantages, the CAM assay, as highly valuable in vivo model, could be used regularly in pharmaceutical industries.
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Affiliation(s)
- Soontaree Grace Intasa-Ard
- School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, Thailand; Institute for Integrated Cell-Material Sciences-Vidyasirimedhi Institute of Science and Technology Research Center, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Albane Birault
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan.
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18
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O’Dwyer J, Murphy R, Dolan EB, Kovarova L, Pravda M, Velebny V, Heise A, Duffy GP, Cryan SA. Development of a nanomedicine-loaded hydrogel for sustained delivery of an angiogenic growth factor to the ischaemic myocardium. Drug Deliv Transl Res 2019; 10:440-454. [DOI: 10.1007/s13346-019-00684-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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19
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Ren X, Akimoto J, Miyatake H, Tada S, Zhu L, Mao H, Isoshima T, Müller S, Kim SM, Zhou Y, Ito Y. Cell migration and growth induced by photo-immobilised vascular endothelial growth factor (VEGF) isoforms. J Mater Chem B 2019. [DOI: 10.1039/c9tb00407f] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
VEGF isoforms immobilised by photo-reactive gelatin (AzPhe-gelatin) enhance cell migration and proliferation.
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20
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Natividad-Diaz SL, Browne S, Jha AK, Ma Z, Hossainy S, Kurokawa YK, George SC, Healy KE. A combined hiPSC-derived endothelial cell and in vitro microfluidic platform for assessing biomaterial-based angiogenesis. Biomaterials 2018; 194:73-83. [PMID: 30583150 DOI: 10.1016/j.biomaterials.2018.11.032] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
Abstract
Human induced pluripotent stem cell (hiPSC) derived angiogenesis models present a unique opportunity for patient-specific platforms to study the complex process of angiogenesis and the endothelial cell response to biomaterial and biophysical changes in a defined microenvironment. We present a refined method for differentiating hiPSCs into a CD31 + endothelial cell population (hiPSC-ECs) using a single basal medium from pluripotency to the final stage of differentiation. This protocol produces endothelial cells that are functionally competent in assays following purification. Subsequently, an in vitro angiogenesis model was developed by encapsulating the hiPSC-ECs into a tunable, growth factor sequestering hyaluronic acid (HyA) matrix where they formed stable, capillary-like networks that responded to environmental stimuli. Perfusion of the networks was demonstrated using fluorescent beads in a microfluidic device designed to study angiogenesis. The combination of hiPSC-ECs, bioinspired hydrogel, and the microfluidic platform creates a unique testbed for rapidly assessing the performance of angiogenic biomaterials.
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Affiliation(s)
- Sylvia L Natividad-Diaz
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States
| | - Shane Browne
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States
| | - Amit K Jha
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States; Department of Materials Science and Engineering, University of California-Berkeley, Berkeley, CA, United States
| | - Zhen Ma
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States
| | - Samir Hossainy
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States; Department of Materials Science and Engineering, University of California-Berkeley, Berkeley, CA, United States
| | - Yosuke K Kurokawa
- Department of Biomedical Engineering, Washington University in St Louis, MO, United States
| | - Steven C George
- Department of Biomedical Engineering, University of California-Davis, Davis, CA, United States
| | - Kevin E Healy
- Department of Bioengineering, University of California-Berkeley, Berkeley, CA, United States; Department of Materials Science and Engineering, University of California-Berkeley, Berkeley, CA, United States.
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21
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Mediating the invasion of smooth muscle cells into a cell-responsive hydrogel under the existence of immune cells. Biomaterials 2018; 180:193-205. [DOI: 10.1016/j.biomaterials.2018.07.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 05/27/2018] [Accepted: 07/11/2018] [Indexed: 01/12/2023]
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22
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Nih LR, Gojgini S, Carmichael ST, Segura T. Dual-function injectable angiogenic biomaterial for the repair of brain tissue following stroke. NATURE MATERIALS 2018; 17:642-651. [PMID: 29784996 PMCID: PMC6019573 DOI: 10.1038/s41563-018-0083-8] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 04/16/2018] [Indexed: 04/14/2023]
Abstract
Stroke is the primary cause of disability due to the brain's limited ability to regenerate damaged tissue. After stroke, an increased inflammatory and immune response coupled with severely limited angiogenesis and neuronal growth results in a stroke cavity devoid of normal brain tissue. In the adult, therapeutic angiogenic materials have been used to repair ischaemic tissues through the formation of vascular networks. However, whether a therapeutic angiogenic material can regenerate brain tissue and promote neural repair is poorly understood. Here we show that the delivery of an engineered immune-modulating angiogenic biomaterial directly to the stroke cavity promotes tissue formation de novo, and results in axonal networks along thee generated blood vessels. This regenerated tissue produces functional recovery through the established axonal networks. Thus, this biomaterials approach generates a vascularized network of regenerated functional neuronal connections within previously dead tissue and lays the groundwork for the use of angiogenic materials to repair other neurologically diseased tissues.
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Affiliation(s)
- Lina R Nih
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA
- Department of Neurology David Geffen School of Medicine, University of California, Los Angeles, USA, CA
| | - Shiva Gojgini
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA
| | - S Thomas Carmichael
- Department of Neurology David Geffen School of Medicine, University of California, Los Angeles, USA, CA.
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA.
- Department of Biomedical Engineering, Neurology, Dermatology, Duke University, Durham, NC, USA.
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23
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Rocha LA, Sousa RA, Learmonth DA, Salgado AJ. The Role of Biomaterials as Angiogenic Modulators of Spinal Cord Injury: Mimetics of the Spinal Cord, Cell and Angiogenic Factor Delivery Agents. Front Pharmacol 2018; 9:164. [PMID: 29535633 PMCID: PMC5835322 DOI: 10.3389/fphar.2018.00164] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 02/14/2018] [Indexed: 12/12/2022] Open
Abstract
Spinal cord injury (SCI) represents an extremely debilitating condition for which no efficacious treatment is available. One of the main contributors to the inhospitable environment found in SCI is the vascular disruption that happens at the moment of injury that compromises the blood-spinal cord barrier (BSCB) and triggers a cascade of events that includes infiltration of inflammatory cells, ischemia and intraparenchymal hemorrhage. Due to the unsatisfactory nature of revascularization following SCI, restoring vascular perfusion and the BSCB seems an interesting way of modulating the lesion environment into a regenerative phenotype, with a potential increase in functional recovery. Certain biomaterials possess interesting features to enhance SCI therapies, and in fact have been applied as angiogenic promoters in other pathologies. The present mini-review intends to highlight the contribution that biomaterials could make in the development of novel therapeutic solutions able to restore proper vascularization and the BSCB.
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Affiliation(s)
- Luís A. Rocha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B’s – PT Government Associate Laboratory, Braga, Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA, Barco, Portugal
| | - Rui A. Sousa
- Stemmatters, Biotecnologia e Medicina Regenerativa SA, Barco, Portugal
| | | | - António J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B’s – PT Government Associate Laboratory, Braga, Portugal
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24
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Clegg LE, Mac Gabhann F. A computational analysis of pro-angiogenic therapies for peripheral artery disease. Integr Biol (Camb) 2018; 10:18-33. [PMID: 29327758 PMCID: PMC7017937 DOI: 10.1039/c7ib00218a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Inducing therapeutic angiogenesis to effectively form hierarchical, non-leaky networks of perfused vessels in tissue engineering applications and ischemic disease remains an unmet challenge, despite extensive research and multiple clinical trials. Here, we use a previously-developed, multi-scale, computational systems pharmacology model of human peripheral artery disease to screen a diverse array of promising pro-angiogenic strategies, including gene therapy, biomaterials, and antibodies. Our previously-validated model explicitly accounts for VEGF immobilization, Neuropilin-1 binding, and weak activation of VEGF receptor 2 (VEGFR2) by the "VEGFxxxb" isoforms. First, we examine biomaterial-based delivery of VEGF engineered for increased affinity to the extracellular matrix. We show that these constructs maintain VEGF close to physiological levels and extend the duration of VEGFR2 activation. We demonstrate the importance of sub-saturating VEGF dosing to prevent angioma formation. Second, we examine the potential of ligand- or receptor-based gene therapy to normalize VEGF receptor signaling. Third, we explore the potential for antibody-based pro-angiogenic therapy. Our model supports recent observations that improvement in perfusion following treatment with anti-VEGF165b in mice is mediated by VEGF-receptor 1, not VEGFR2. Surprisingly, the model predicts that the approved anti-VEGF cancer drug, bevacizumab, may actually improve signaling of both VEGFR1 and VEGFR2 via a novel 'antibody swapping' effect that we demonstrate here. Altogether, this model provides insight into the mechanisms of action of several classes of pro-angiogenic strategies within the context of the complex molecular and physiological processes occurring in vivo. We identify molecular signaling similarities between promising approaches and key differences between promising and ineffective strategies.
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Affiliation(s)
- Lindsay E Clegg
- Institute for Computational Medicine, Institute for NanoBioTechnology, and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA.
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25
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Moreno-Jiménez I, Kanczler JM, Hulsart-Billstrom G, Inglis S, Oreffo RO. The Chorioallantoic Membrane Assay for Biomaterial Testing in Tissue Engineering: A Short-TermIn VivoPreclinical Model. Tissue Eng Part C Methods 2017; 23:938-952. [DOI: 10.1089/ten.tec.2017.0186] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Inés Moreno-Jiménez
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Janos M. Kanczler
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Gry Hulsart-Billstrom
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Stefanie Inglis
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Richard O.C. Oreffo
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
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26
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Van De Walle E, Van Nieuwenhove I, De Vos W, Declercq H, Dubruel P, Van Vlierberghe S. Cell response of flexible PMMA-derivatives: supremacy of surface chemistry over substrate stiffness. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:183. [PMID: 29027051 DOI: 10.1007/s10856-017-5994-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 09/21/2017] [Indexed: 06/07/2023]
Abstract
The present work reports on the development of a range of poly(methyl methacrylate)/poly(ethylene glycol) (PMMAPEG)-based materials, characterized by different elasticity moduli in order to study the influence of the substrate's mechanical properties on the response of human umbilical vein endothelial cells (HUVECs). To render the selected materials cell-interactive, a polydopamine (PDA)/gelatin type B (Gel B) coating was applied. Prior to the in vitro assay, the success of the PDA and Gel B immobilization onto the materials was confirmed using X-ray photoelectron spectroscopy (XPS) as reflected by the nitrogen percentages measured for the materials after PDA and Gel B deposition. Tensile tests showed that materials with E-moduli ranging from 37 to 1542 MPa could be obtained by varying the ratio between PMMA and PEG as well as the PEG molecular weight and its functionality (i.e. mono-methacrylate vs. di-methacrylate). The results after 1 day of cell contact suggested a preferred HUVECs cell growth onto more rigid materials. After 1 week, the material with the lowest E-modulus of 37 MPa showed lower cell densities compared to the other materials. No clear correlation could be observed between the number of focal adhesion points and the substrate stiffness. Although minor differences were found, these were not statistically significant. This last conclusion again highlights the universal character of the PDA/Gel B modification. The present work could thus be valuable for the development of a range of cell substrates requiring different mechanical properties in line with the envisaged application while the cell response should ideally remain unaffected.
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Affiliation(s)
- Elke Van De Walle
- Polymer Chemistry & Biomaterials Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-Bis, 9000, Ghent, Belgium
| | - Ine Van Nieuwenhove
- Polymer Chemistry & Biomaterials Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-Bis, 9000, Ghent, Belgium
| | - Winnok De Vos
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, BE-2610, Wilrijk-Antwerp, Belgium
- Department of Molecular Biotechnology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Heidi Declercq
- Tissue Engineering Group, Department of Basic Medical Sciences, Ghent University, De Pintelaan 185 6B3, Ghent, B-9000, Belgium
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-Bis, 9000, Ghent, Belgium.
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-Bis, 9000, Ghent, Belgium.
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Wang Z, Wen F, Lim PN, Zhang Q, Konishi T, Wang D, Teoh SH, Thian ES. Nanomaterial scaffolds to regenerate musculoskeletal tissue: signals from within for neovessel formation. Drug Discov Today 2017; 22:1385-1391. [DOI: 10.1016/j.drudis.2017.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/20/2017] [Accepted: 03/20/2017] [Indexed: 01/13/2023]
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Pence JC, Clancy KBH, Harley BAC. Proangiogenic Activity of Endometrial Epithelial and Stromal Cells in Response to Estradiol in Gelatin Hydrogels. ACTA ACUST UNITED AC 2017; 1. [PMID: 29230433 DOI: 10.1002/adbi.201700056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Biomaterial vascularization remains a major focus in the field of tissue engineering. Biomaterial culture of endometrial cells is described as a platform to inform the design of proangiogenic biomaterials. The endometrium undergoes rapid growth and shedding of dense vascular networks during each menstrual cycle mediated via estradiol and progesterone in vivo. Cocultures of endometrial epithelial and stromal cells encapsulated within a methacrylamide-functionalized gelatin hydrogel are employed. It is reported that proangiogenic gene expression profiles and vascular endothelial growth factor production are hormone dependent in endometrial epithelial cells, but that hormone signals have no effect on human telomerase reverse transcriptase (hTERT)-immortalized endometrial stromal cells. This study subsequently examines whether the magnitude of epithelial cell response is sufficient to induce changes in human umbilical vein endothelial cell network formation. Incorporation of endometrial stromal cells improves vessel formation, but co-culture with endometrial epithelial cells leads to a decrease in vascular formation, suggesting the need for stratified cocultures of endometrial epithelial and stromal cells with endothelial cells. Given the transience of hormonal signals within 3D biomaterials, the inclusion of sex hormone binding globulin (SHBG) to alter the bioavailability of estradiol within the hydrogel is reported, demonstrating a strategy to reduce diffusive losses via SHBG-mediated estradiol sequestration.
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Affiliation(s)
- Jacquelyn C Pence
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews St, Urbana, IL 61801, USA
| | - Kathryn B H Clancy
- Department of Anthropology, University of Illinois at Urbana-Champaign, 607 S. Mathews St, Urbana IL 61801, USA
| | - Brendan A C Harley
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews St, Urbana, IL 61801, USA
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Cipitria A, Salmeron-Sanchez M. Mechanotransduction and Growth Factor Signalling to Engineer Cellular Microenvironments. Adv Healthc Mater 2017; 6. [PMID: 28792683 DOI: 10.1002/adhm.201700052] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/20/2017] [Indexed: 12/20/2022]
Abstract
Engineering cellular microenvironments involves biochemical factors, the extracellular matrix (ECM) and the interaction with neighbouring cells. This progress report provides a critical overview of key studies that incorporate growth factor (GF) signalling and mechanotransduction into the design of advanced microenvironments. Materials systems have been developed for surface-bound presentation of GFs, either covalently tethered or sequestered through physico-chemical affinity to the matrix, as an alternative to soluble GFs. Furthermore, some materials contain both GF and integrin binding regions and thereby enable synergistic signalling between the two. Mechanotransduction refers to the ability of the cells to sense physical properties of the ECM and to transduce them into biochemical signals. Various aspects of the physics of the ECM, i.e. stiffness, geometry and ligand spacing, as well as time-dependent properties, such as matrix stiffening, degradability, viscoelasticity, surface mobility as well as spatial patterns and gradients of physical cues are discussed. To conclude, various examples illustrate the potential for cooperative signalling of growth factors and the physical properties of the microenvironment for potential applications in regenerative medicine, cancer research and drug testing.
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Affiliation(s)
- Amaia Cipitria
- Julius Wolff Institute & Center for Musculoskeletal Surgery; Charité - Universitätsmedizin Berlin; 13353 Berlin Germany
- Berlin-Brandenburg Center for Regenerative Therapies; Charité - Universitätsmedizin Berlin; 13353 Berlin Germany
| | - Manuel Salmeron-Sanchez
- Division of Biomedical Engineering; School of Engineering; University of Glasgow; Glasgow G128LT UK
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Magno V, Friedrichs J, Weber HM, Prewitz MC, Tsurkan MV, Werner C. Macromolecular crowding for tailoring tissue-derived fibrillated matrices. Acta Biomater 2017; 55:109-119. [PMID: 28433789 DOI: 10.1016/j.actbio.2017.04.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/21/2017] [Accepted: 04/18/2017] [Indexed: 10/19/2022]
Abstract
Tissue-derived fibrillated matrices can be instrumental for the in vitro reconstitution of multiphasic extracellular microenvironments. However, despite of several advantages, the obtained scaffolds so far offer a rather narrow range of materials characteristics only. In this work, we demonstrate how macromolecular crowding (MMC) - the supplementation of matrix reconstitution media with synthetic or natural macromolecules in ways to create excluded volume effects (EVE) - can be employed for tailoring important structural and biophysical characteristics of kidney-derived fibrillated matrices. Porcine kidneys were decellularized, ground and the obtained extracellular matrix (ECM) preparations were reconstituted under varied MMC conditions. We show that MMC strongly influences the fibrillogenesis kinetics and impacts the architecture and the elastic modulus of the reconstituted matrices, with diameters and relative alignment of fibrils increasing at elevated concentrations of the crowding agent Ficoll400, a nonionic synthetic polymer of sucrose. Furthermore, we demonstrate how MMC modulates the distribution of key ECM molecules within the reconstituted matrix scaffolds. As a proof of concept, we compared different variants of kidney-derived fibrillated matrices in cell culture experiments referring to specific requirements of kidney tissue engineering approaches. The results revealed that MMC-tailored matrices support the morphogenesis of human umbilical vein endothelial cells (HUVECs) into capillary networks and of murine kidney stem cells (KSCs) into highly branched aggregates. The established methodology is concluded to provide generally applicable new options for tailoring tissue-specific multiphasic matrices in vitro. STATEMENT OF SIGNIFICANCE Tissue-derived fibrillated matrices can be instrumental for the in vitro reconstitution of multiphasic extracellular microenvironments. However, despite of several advantages, the obtained scaffolds so far offer a rather narrow range of materials characteristics only. Using the kidney matrix as a model, we herein report a new approach for tailoring tissue-derived fibrillated matrices by means of macromolecular crowding (MMC), the supplementation of reconstitution media with synthetic or natural macromolecules. MMC-modulation of matrix reconstitution is demonstrated to allow for the adjustment of fibrillation kinetics and nano-architecture, fiber diameter, alignment, and matrix elasticity. Primary human umbilical vein endothelial cells (HUVEC) and murine kidney stem cells (KSC) were cultured within different variants of fibrillated kidney matrix scaffolds. The results showed that MMC-tailored matrices were superior in supporting desired morphogenesis phenomena of both cell types.
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Hertig G, Zehnder M, Woloszyk A, Mitsiadis TA, Ivica A, Weber FE. Iodixanol as a Contrast Agent in a Fibrin Hydrogel for Endodontic Applications. Front Physiol 2017; 8:152. [PMID: 28360862 PMCID: PMC5350124 DOI: 10.3389/fphys.2017.00152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 02/27/2017] [Indexed: 01/20/2023] Open
Abstract
The application of biomaterials used in regenerative endodontics should be traceable. In this study, we checked some basic effects of rendering a fibrin hydrogel radiopaque using an iodine-based contrast agent (iodixanol) approved for systemic application. Fibrin hydrogels were prepared from a fibrin sealant (Tisseel) using either an isotonic iodixanol solution (Visipaque 320, test) or Tris buffer (control) as a diluent. Gelation kinetics, radiopacity, and swelling of lyophilized hydrogels were tested using standard methods. Hydrogel structure was evaluated using scanning electron microscopy (SEM). Furthermore, iodixanol release from the test gels was assessed using spectrophotometry, and tissue compatibility was compared between test and control hydrogels using the chick chorioallantoic membrane (CAM) assay. Results were compared using pairwise t-test, p < 0.05. Iodixanol caused a 70-fold delay in gelation to 26 min in the test compared to the control hydrogels (22 ± 1 s). Radiopacity of the test gels was 1.9 ± 0.2 mm Al/mm, compared to zero in the control hydrogels. Lyophilized hydrogel swelling was strongly reduced when iodixanol was added to the hydrogel (p < 0.05). Test hydrogels had an altered SEM appearance compared to controls, and exhibited a reduced porosity. Iodixanol release from the test hydrogels reached 14.5 ± 0.5% after 120 h and then ceased. This release did not have any apparent toxic effect and neither affected the viability, nor the physiology or vascularization of the CAM of fertilized chicken eggs. Iodixanol can render a fibrin hydrogel radiopaque and maintains its tissue compatibility, yet impacts gelation kinetics and hydrogel porosity.
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Affiliation(s)
- Gabriel Hertig
- Oral Biotechnology and Bioengineering, University of ZurichZurich, Switzerland
| | - Matthias Zehnder
- Preventive Dentistry, Periodontology, and Cariology, University of ZurichZurich, Switzerland
| | - Anna Woloszyk
- Orofacial Development and Regeneration, Institute of Oral Biology, University of ZurichZurich, Switzerland
| | - Thimios A. Mitsiadis
- Orofacial Development and Regeneration, Institute of Oral Biology, University of ZurichZurich, Switzerland
| | - Anja Ivica
- Oral Biotechnology and Bioengineering, University of ZurichZurich, Switzerland
| | - Franz E. Weber
- Oral Biotechnology and Bioengineering, University of ZurichZurich, Switzerland
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Row S, Santandreu A, Swartz DD, Andreadis ST. Cell-free vascular grafts: Recent developments and clinical potential. TECHNOLOGY 2017; 5:13-20. [PMID: 28674697 PMCID: PMC5492388 DOI: 10.1142/s2339547817400015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Recent advances in vascular tissue engineering have led to the development of cell-free grafts that are available off-the-shelf for on demand surgery. Challenges associated with cell-based technologies including cell sourcing, cell expansion and long-term bioreactor culture motivated the development of completely cell-free vascular grafts. These are based on decellularized arteries, decellularized cultured cell-based tissue engineered grafts or biomaterials functionalized with biological signals that promote in situ tissue regeneration. Clinical trials undertaken to demonstrate the applicability of these grafts are also discussed. This comprehensive review summarizes recent developments in vascular graft technologies, with potential applications in coronary artery bypass procedures, lower extremity bypass, vascular injury and trauma, congenital heart diseases and dialysis access shunts, to name a few.
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Affiliation(s)
- Sindhu Row
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Amherst, NY 14260-4200, USA
- Angiograft LLC, Amherst NY
| | - Ana Santandreu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Amherst, NY 14260-4200, USA
| | | | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Amherst, NY 14260-4200, USA
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Amherst, NY 14260-4200, USA
- New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY
- Angiograft LLC, Amherst NY
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Bedair TM, ElNaggar MA, Joung YK, Han DK. Recent advances to accelerate re-endothelialization for vascular stents. J Tissue Eng 2017; 8:2041731417731546. [PMID: 28989698 PMCID: PMC5624345 DOI: 10.1177/2041731417731546] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 08/19/2017] [Indexed: 12/25/2022] Open
Abstract
Cardiovascular diseases are considered as one of the serious diseases that leads to the death of millions of people all over the world. Stent implantation has been approved as an easy and promising way to treat cardiovascular diseases. However, in-stent restenosis and thrombosis remain serious problems after stent implantation. It was demonstrated in a large body of previously published literature that endothelium impairment represents a major factor for restenosis. This discovery became the driving force for many studies trying to achieve an optimized methodology for accelerated re-endothelialization to prevent restenosis. Thus, in this review, we summarize the different methodologies opted to achieve re-endothelialization, such as, but not limited to, manipulation of surface chemistry and surface topography.
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Affiliation(s)
- Tarek M Bedair
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, Korea
- Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
| | - Mahmoud A ElNaggar
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Korea
| | - Yoon Ki Joung
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Korea
| | - Dong Keun Han
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Korea
- Department of Biomedical Science, CHA University, Gyeonggi, Korea
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Promoting angiogenesis with mesoporous microcarriers through a synergistic action of delivered silicon ion and VEGF. Biomaterials 2016; 116:145-157. [PMID: 27918936 DOI: 10.1016/j.biomaterials.2016.11.053] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 11/26/2016] [Accepted: 11/27/2016] [Indexed: 01/07/2023]
Abstract
Angiogenic capacity of biomaterials is a key asset to drive vascular ingrowth during tissue repair and regeneration. Here we design a unique angiogenic microcarrier based on sol-gel derived mesoporous silica. The microspheres offer a potential angiogenic stimulator, Si ion, 'intrinsically' within the chemical structure. Furthermore, the highly mesoporous nature allows the loading and release of angiogenic growth factor 'extrinsically'. The Si ion is released from the microcarriers at therapeutic ranges (over a few ppm per day), which indeed up-regulates the expression of hypoxia inducing factor 1α (HIF1α) and stabilizes it by blocking HIF-prolyl hydroxylase 2 (PHD2) in HUVECs. This in turn activates the expression of a series of proangiogenic molecules, including bFGF, VEGF, and eNOS. VEGF is incorporated effectively within the mesopores of microcarriers and is then released continuously over a couple of weeks. The Si ion and VEGF released from the microcarriers synergistically stimulate endothelial cell functions, such as cell migration, chemotactic homing, and tubular networking. Furthermore, in vivo neo-blood vessel sprouting in chicken chorioallantoic membrane model is significantly promoted by the Si/VEGF releasing microcarriers. The current study demonstrates the synergized effects of Si ion and angiogenic growth factor through a biocompatible mesoporous microsphere delivery platform, and the concept provided here may open the door to a new co-delivery system of utilizing ions with growth factors for tissue repair and regeneration.
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Howell DW, Duran CL, Tsai SP, Bondos SE, Bayless KJ. Functionalization of Ultrabithorax Materials with Vascular Endothelial Growth Factor Enhances Angiogenic Activity. Biomacromolecules 2016; 17:3558-3569. [DOI: 10.1021/acs.biomac.6b01068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- David W. Howell
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas 77843, United States
| | - Camille L. Duran
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas 77843, United States
| | - Shang-Pu Tsai
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas 77843, United States
| | - Sarah E. Bondos
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas 77843, United States
- Department
of Biochemistry and Cell Biology, Rice University, Houston, Texas 77005, United States
| | - Kayla J. Bayless
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas 77843, United States
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Zhu X, Gojgini S, Chen TH, Teng F, Fei P, Dong S, Segura T, Ho CM. Three dimensional tubular structure self-assembled by vascular mesenchymal cells at stiffness interfaces of hydrogels. Biomed Pharmacother 2016; 83:1203-1211. [DOI: 10.1016/j.biopha.2016.08.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/26/2016] [Accepted: 08/08/2016] [Indexed: 10/21/2022] Open
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Chen J, Zhang D, Li Q, Yang D, Fan Z, Ma D, Ren L. Effect of different cell sheet ECM microenvironment on the formation of vascular network. Tissue Cell 2016; 48:442-51. [PMID: 27561623 DOI: 10.1016/j.tice.2016.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/08/2016] [Accepted: 08/08/2016] [Indexed: 11/29/2022]
Abstract
The repair and reconstruction of large bone defects remains as a significant clinical challenge mainly due to the insufficient vascularization. The prefabrication of vascular network based on cell sheet technique brings a promising potential for sufficient vascularization due to rich extracellular matrix (ECM) of cell sheets. However, the effect of different cell sheet ECM micro-environment on the formation of a vascular network has not been well understood. Here our goal is to study the effect of different cell sheets on the formation of a vascular network. First we cultured human bone marrow mesenchymal stem cells (hBMSCs) under two culture conditions to obtain osteogenic differentiated cell sheet (ODCS) and undifferentiated cell sheet (UDCS), respectively. Then the human umbilical vein endothelial cells (HUVECs) were seeded onto the surface of the two sheets at different seeding densities to fabricate pre-vascularized cell sheets. Our results indicated that the two sheets facilitated the alignment of HUVECs and promoted the formation of vascular networks. Quantitative analysis showed that the number of networks in ODCS was higher than that in the UDCS. The ECM of the two sheets was remodeled and rearranged during the tubulogenesis process. Furthermore, results showed that the optimal seeding density of HUVECs was 5×10(4)cell/cm(2). In summary, these results suggest that the vascularized ODCS has a promising potential to construct pre-vascularized tissue for bone repair.
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Affiliation(s)
- Jia Chen
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China; Hospital of Stomatology, General Hospital of Ningxia Medical University, Yingchuan, Ningxia, 750004, China
| | - Dan Zhang
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Qin Li
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Dan Yang
- Department of Stomatology, The First people's Hospital of Jiayuguan, Jiayuguan, Gansu, 735100, China
| | - Zengjie Fan
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Dongyang Ma
- Department of Oral and Maxillofacial Surgery, Lanzhou General Hospital, Lanzhou Command of PLA, Gansu 730050, China
| | - Liling Ren
- School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China.
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Price CF, Burgess DJ, Kastellorizios M. l -DOPA as a small molecule surrogate to promote angiogenesis and prevent dexamethasone-induced ischemia. J Control Release 2016; 235:176-181. [DOI: 10.1016/j.jconrel.2016.05.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 05/11/2016] [Accepted: 05/31/2016] [Indexed: 12/19/2022]
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Li X, Wu TT, Chen J, Qiu W. Elevated expression levels of serum insulin-like growth factor-1, tumor necrosis factor-α and vascular endothelial growth factor 165 might exacerbate type 2 diabetic nephropathy. J Diabetes Investig 2016; 8:108-114. [PMID: 27218216 PMCID: PMC5217934 DOI: 10.1111/jdi.12542] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/11/2016] [Accepted: 05/22/2016] [Indexed: 12/25/2022] Open
Abstract
AIMS/INTRODUCTION The present study aimed to determine the associations between expressions of insulin-like growth factor-1 (IGF-1), tumor necrosis factor-α (TNF-α) and vascular endothelial growth factor 165 (VEGF165 ) in serum, and occurrence and development of type 2 diabetic nephropathy (DN). MATERIALS AND METHODS A total of 108 patients diagnosed as DN were randomly selected, including 50 patients in the microalbuminuria group, 44 patients in the macroalbuminuria group and 14 patients in the renal insufficiency group. Meanwhile, 97 healthy people were collected as a normal control group. Urinary albumin (UALB) and urine creatinine (Cr) of all participants were measured for 24 h, with their ratio (UALB/Cr) being calculated. Enzyme-linked immunosorbent assay was used to detect the serum concentrations of IGF-1, TNF-α and VEGF165 . RESULTS The expressions of serum IGF-1, TNF-α and VEGF165 in the type 2 DN patients were significantly higher than those in the control group (all P < 0.05). The expressions of serum IGF-1, TNF-α and VEGF165 in the type 2 DN patients were positively correlated with UALB/Cr (all P < 0.05). As type 2 DN worsened, the expressions of serum IGF-1, TNF-α and VEGF165 increased, and type 2 DN severity had positive correlations with serum IGF-1, TNF-α and VEGF165 concentrations (all P < 0.05). There was a positive association between IGF-1 and TNF-α, IGF-1 and VEGF165 , and TNF-α and VEGF165 (all P < 0.05). Logistic regression analysis showed that IGF-1 and VEGF165 were associated with the progression of DN (both P < 0.05). CONCLUSIONS Elevated expression levels of serum IGF-1, TNF-α and VEGF165 might exacerbate type 2 DN.
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Affiliation(s)
- Xiang Li
- Department of Clinical Laboratory, Huai'an Hospital Affiliated of Xuzhou Medical University, Huai'an, China
| | - Ting-Ting Wu
- Department of Clinical Laboratory, The Fourth People's Hospital of Huai'an, Huai'an, China
| | - Juan Chen
- Department of Endocrinology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
| | - Wen Qiu
- Department of Clinical Laboratory, Huai'an Hospital Affiliated of Xuzhou Medical University, Huai'an, China
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Belair DG, Schwartz MP, Knudsen T, Murphy WL. Human iPSC-derived endothelial cell sprouting assay in synthetic hydrogel arrays. Acta Biomater 2016; 39:12-24. [PMID: 27181878 PMCID: PMC5228278 DOI: 10.1016/j.actbio.2016.05.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/10/2016] [Accepted: 05/11/2016] [Indexed: 01/09/2023]
Abstract
UNLABELLED Activation of vascular endothelial cells (ECs) by growth factors initiates a cascade of events during angiogenesis in vivo consisting of EC tip cell selection, sprout formation, EC stalk cell proliferation, and ultimately vascular stabilization by support cells. Although EC functional assays can recapitulate one or more aspects of angiogenesis in vitro, they are often limited by undefined substrates and lack of dependence on key angiogenic signaling axes. Here, we designed and characterized a chemically-defined model of endothelial sprouting behavior in vitro using human induced pluripotent stem cell-derived endothelial cells (iPSC-ECs). We rapidly encapsulated iPSC-ECs at high density in poly(ethylene glycol) (PEG) hydrogel spheres using thiol-ene chemistry and subsequently encapsulated cell-dense hydrogel spheres in a cell-free hydrogel layer. The hydrogel sprouting array supported pro-angiogenic phenotype of iPSC-ECs and supported growth factor-dependent proliferation and sprouting behavior. iPSC-ECs in the sprouting model responded appropriately to several reference pharmacological angiogenesis inhibitors of vascular endothelial growth factor, NF-κB, matrix metalloproteinase-2/9, protein kinase activity, and β-tubulin, which confirms their functional role in endothelial sprouting. A blinded screen of 38 putative vascular disrupting compounds from the US Environmental Protection Agency's ToxCast library identified six compounds that inhibited iPSC-EC sprouting and five compounds that were overtly cytotoxic to iPSC-ECs at a single concentration. The chemically-defined iPSC-EC sprouting model (iSM) is thus amenable to enhanced-throughput screening of small molecular libraries for effects on angiogenic sprouting and iPSC-EC toxicity assessment. STATEMENT OF SIGNIFICANCE Angiogenesis assays that are commonly used for drug screening and toxicity assessment applications typically utilize natural substrates like Matrigel(TM) that are difficult to spatially pattern, costly, ill-defined, and may exhibit lot-to-lot variability. Herein, we describe a novel angiogenic sprouting assay using chemically-defined, bioinert poly(ethylene glycol) hydrogels functionalized with biomimetic peptides to promote cell attachment and degradation in a reproducible format that may mitigate the need for natural substrates. The quantitative assay of angiogenic sprouting here enables precise control over the initial conditions and can be formulated into arrays for screening. The sprouting assay here was dependent on key angiogenic signaling axes in a screen of angiogenesis inhibitors and a blinded screen of putative vascular disrupting compounds from the US-EPA.
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Affiliation(s)
- David G Belair
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael P Schwartz
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Thomas Knudsen
- National Center for Computational Toxicology, Office of Research and Development, US Environmental Protection Agency, Research Triangle Park, NC, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA; Material Science Program, University of Wisconsin-Madison, Madison, WI, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA.
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Liu R, Dai H, Zhou Q, Zhang Q, Zhang P. Synthesis and characterization of shape-memory poly carbonate urethane microspheres for future vascular embolization. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:1248-61. [PMID: 27193120 DOI: 10.1080/09205063.2016.1189379] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Two types of shape memory poly carbonate urethanes (PCUs) microspheres were synthesized by pre-polymerization and suspension polymerization, based on Polycarbonate diol (PCDL) as the soft segment, Isophorone diisocyanate (IPDI) and 1,6-hexamethylene diisocyanate (HDI) as the hard segments and 1,4-butanediol (BDO) as the chain expanding agent. The structure, crystallinity, and thermal property of the two synthesized PCUs were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Differential scanning calorimetery (DSC), respectively. The results showed that the two types of PCUs exhibited high thermal stability with phase separation and semi-crystallinity. Also, the results of the compression test displayed that the shape fixity and the shape recovery of two PCUs were more than 90% compared to the originals, indicating their similar bio-applicability and shape-memory properties. The tensile strength, elongation at break was enhanced by introducing and increasing content of HDI. The water contact angles of PCUs decreased and their surface tension increased by surface modified with Bovine serum albumin (BSA). Furthermore, the biological study results of two types of PCUs from the platelet adhesion test and the cell proliferation inhibition test indicated they had some biocompatibilites. Hence, the PCU microspheres might represent a smart and shape-memory embolic agent for vascular embolization.
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Affiliation(s)
- Rongrong Liu
- a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan , China
| | - Honglian Dai
- a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan , China.,b Biomedical Materials and Engineering Research Center of Hubei Province , Wuhan , China
| | - Qian Zhou
- a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan , China
| | - Qian Zhang
- a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan , China
| | - Ping Zhang
- a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan , China
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Kim CS, Mitchell IP, Desotell AW, Kreeger PK, Masters KS. Immobilized epidermal growth factor stimulates persistent, directed keratinocyte migration via activation of PLCγ1. FASEB J 2016; 30:2580-90. [PMID: 27025961 DOI: 10.1096/fj.201600252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/21/2016] [Indexed: 01/19/2023]
Abstract
Epidermal growth factor (EGF) is a critical element in dermal repair, but EGF-containing wound dressings have not been successful clinically. However, these dressings have delivered only soluble EGF, and the native environment provides both soluble and matrix-bound EGF. To address our hypothesis that tethered EGF can stimulate cell behaviors not achievable with soluble EGF, we examined single-cell movement and signaling in human immortalized HaCaT keratinocytes treated with soluble or immobilized EGF. Although both EGF treatments increased collective sheet displacement and individual cell speed, only cells treated with immobilized EGF exhibited directed migration, as well as 2-fold greater persistence compared with soluble EGF. Immunofluorescence showed altered EGF receptor (EGFR) trafficking, where EGFR remained membrane-localized in the immobilized EGF condition. Cells treated with soluble EGF demonstrated higher phosphorylated ERK1/2, and cells on immobilized EGF exhibited higher pPLCγ1, which was localized at the leading edge. Treatment with U0126 inhibited migration in both conditions, demonstrating that ERK1/2 activity was necessary but not responsible for the observed differences. In contrast, PLCγ1 inhibition with U73122 significantly decreased persistence on immobilized EGF. Combined, these results suggest that immobilized EGF increases collective keratinocyte displacement via an increase in single-cell migration persistence resulting from altered EGFR trafficking and PLCγ1 activation.-Kim, C. S., Mitchell, I. P., Desotell, A. W., Kreeger, P. K., Masters, K. S. Immobilized epidermal growth factor stimulates persistent, directed keratinocyte migration via activation of PLCγ1.
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Affiliation(s)
- Chloe S Kim
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Isaiah P Mitchell
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Anthony W Desotell
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Pamela K Kreeger
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kristyn S Masters
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Cell-Demanded VEGF Release via Nanocapsules Elicits Different Receptor Activation Dynamics and Enhanced Angiogenesis. Ann Biomed Eng 2016; 44:1983-92. [PMID: 26940611 DOI: 10.1007/s10439-016-1581-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 02/26/2016] [Indexed: 12/15/2022]
Abstract
Although the delivery of vascular endothelial growth factor (VEGF) with extended release profiles has consistently shown beneficial therapeutic effects compared with bolus delivery, [Martino, M. M., F. Tortelli, M. Mochizuki, S. Traub, D. Ben-David, G. A. Kuhn, R. Muller, E. Livne, S. A. Eming, and J. A. Hubbell. Sci. Transl. Med. 3(100):100ra189, 2011; Martino, M. M., P. S. Briquez, A. Ranga, M. P. Lutolf, and J. A. Hubbell. Proc. Natl. Acad. Sci. USA. 110(12):4563-4568, 2013; Amiram, M., K. M. Luginbuhl, X. Li, M. N. Feinglos, and A. Chilkoti. Proc. Natl. Acad. Sci. USA. 110(8):2792-2797, 2013] it remains unclear if the reason is solely due to the physical availability and the reduced degradation of the protein. Here we studied the activation of VEGF receptor 2 (VR-2) by sustained released VEGF compared with bolus delivered VEGF to unveil that sustained delivery system alters the dynamics of receptor activation and affects the actions of cells between sprouting and proliferation. We utilized a protein nanocapsule delivery strategy that releases VEGF as mediated by extracellular proteases. These protein nanocapsules were synthesized through an aqueous assembly of a nanogel-peptide shell around the protein, leading to one to two proteins encapsulated per nanocapsule. Receptor activation studies revealed differential dynamics of receptor activation for slowly released VEGF compared with bolus delivered VEGF. As expected sustained released VEGF via nanocapsules resulted in enhanced vascular sprouting in vitro and in vivo. These studies demonstrate the physical presentation of VEGF, in this case of a slow release with time, can affect its molecular mechanism of actions and cause alterations in cellular responses and therapeutic outcomes.
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Salmerón-Sánchez M, Dalby MJ. Synergistic growth factor microenvironments. Chem Commun (Camb) 2016; 52:13327-13336. [DOI: 10.1039/c6cc06888j] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper focuses on developments in materials to stimulate growth factors effects by engineering presentation in synergy with integrins.
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Affiliation(s)
- Manuel Salmerón-Sánchez
- Division of Biomedical Engineering
- School of Engineering
- University of Glasgow
- Rankine Building
- Glasgow G12 8LT
| | - Matthew J. Dalby
- Center for Cell Engineering
- Institute of Molecular Cell and Systems Biology
- University of Glasgow
- Glasgow G12 8QQ
- UK
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Bioengineering vascularized tissue constructs using an injectable cell-laden enzymatically crosslinked collagen hydrogel derived from dermal extracellular matrix. Acta Biomater 2015; 27:151-166. [PMID: 26348142 DOI: 10.1016/j.actbio.2015.09.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/10/2015] [Accepted: 09/01/2015] [Indexed: 12/16/2022]
Abstract
Tissue engineering promises to restore or replace diseased or damaged tissue by creating functional and transplantable artificial tissues. The development of artificial tissues with large dimensions that exceed the diffusion limitation will require nutrients and oxygen to be delivered via perfusion instead of diffusion alone over a short time period. One approach to perfusion is to vascularize engineered tissues, creating a de novo three-dimensional (3D) microvascular network within the tissue construct. This significantly shortens the time of in vivo anastomosis, perfusion and graft integration with the host. In this study, we aimed to develop injectable allogeneic collagen-phenolic hydroxyl (collagen-Ph) hydrogels that are capable of controlling a wide range of physicochemical properties, including stiffness, water absorption and degradability. We tested whether collagen-Ph hydrogels could support the formation of vascularized engineered tissue graft by human blood-derived endothelial colony-forming cells (ECFCs) and bone marrow-derived mesenchymal stem cells (MSC) in vivo. First, we studied the growth of adherent ECFCs and MSCs on or in the hydrogels. To examine the potential formation of functional vascular networks in vivo, a liquid pre-polymer solution of collagen-Ph containing human ECFCs and MSCs, horseradish peroxidase and hydrogen peroxide was injected into the subcutaneous space or abdominal muscle defect of an immunodeficient mouse before gelation, to form a 3D cell-laden polymerized construct. These results showed that extensive human ECFC-lined vascular networks can be generated within 7 days, the engineered vascular density inside collagen-Ph hydrogel constructs can be manipulated through refinable mechanical properties and proteolytic degradability, and these networks can form functional anastomoses with the existing vasculature to further support the survival of host muscle tissues. Finally, optimized conditions of the cell-laden collagen-Ph hydrogel resulted in not only improving the long-term differentiation of transplanted MSCs into mineralized osteoblasts, but the collagen-Ph hydrogel also improved an increased of adipocytes within the vascularized bioengineered tissue in a mouse after 1 month of implantation. STATEMENT OF SIGNIFICANCE We reported a method for preparing autologous extracellular matrix scaffolds, murine collagen-Ph hydrogels, and demonstrated its suitability for use in supporting human progenitor cell-based formation of 3D vascular networks in vitro and in vivo. Results showed extensive human vascular networks can be generated within 7 days, engineered vascular density inside collagen-Ph constructs can be manipulated through refinable mechanical properties and proteolytic degradability, and these networks can form functional anastomoses with existing vasculature to further support the survival of host muscle tissues. Moreover, optimized conditions of cell-laden collagen-Ph hydrogel resulted in not only improving the long-term differentiation of transplanted MSCs into mineralized osteoblasts, but the collagen-Ph hydrogel also improved an increased of adipocytes within the vascularized bioengineered tissue in a mouse.
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Liu P, Zhao Y, Yan Y, Hu Y, Yang W, Cai K. Construction of extracellular microenvironment to improve surface endothelialization of NiTi alloy substrate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:1-7. [DOI: 10.1016/j.msec.2015.05.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 03/22/2015] [Accepted: 05/15/2015] [Indexed: 12/13/2022]
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Bostancıoğlu RB, Peksen C, Genc H, Gürbüz M, Karel FB, Koparal AS, Dogan A, Kose N, Koparal AT. Analyses of the modulatory effects of antibacterial silver doped calcium phosphate-based ceramic nano-powder on proliferation, survival, and angiogenic capacity of different mammalian cells in vitro. ACTA ACUST UNITED AC 2015; 10:045024. [PMID: 26306474 DOI: 10.1088/1748-6041/10/4/045024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this study, the antibacterial, cytotoxic, and angiogenic activities of silver doped calcium phosphate-based inorganic powder (ABT or PAG) were systematically investigated. ABT powders containing varying silver content were fabricated using a wet chemical manufacturing method. Antibacterial efficiencies of the ABT powders were investigated using a standard test with indicator bacteria and yeast. The cytotoxic effects of ABT on three different fibroblast cells and human umbilical vein endothelial cells (HUVECs) were assessed using MTT assay. ABT powder exhibits concentration-related cytotoxicity characteristics. Apoptotic activity, attachment capability, and wound healing effects were examined on fibroblasts. The angiogenic activity of ABT was investigated by tube formation assay in HUVECs; 10 μg ml(-1) and 100 μg ml(-1) concentrations of the highest metal ion content of ABT did not disrupt the tube formation of HUVECs. All these tests showed that ABT does not compromise the survival of the cells and might impose regeneration ability to various cell types. These results indicate that silver doped calcium phosphate-based inorganic powder with an optimal silver content has good potential for developing new biomaterials for implant applications.
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Díaz-Rodríguez P, Gómez-Amoza JL, Landin M. The synergistic effect of VEGF and biomorphic silicon carbides topography on
in vivo
angiogenesis and human bone marrow derived mesenchymal stem cell differentiation. Biomed Mater 2015; 10:045017. [DOI: 10.1088/1748-6041/10/4/045017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Najdanović JG, Cvetković VJ, Stojanović S, Vukelić-Nikolić MĐ, Stanisavljević MN, Živković JM, Najman SJ. The Influence of Adipose-Derived Stem Cells Induced into Endothelial Cells on Ectopic Vasculogenesis and Osteogenesis. Cell Mol Bioeng 2015. [DOI: 10.1007/s12195-015-0403-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Clegg LW, Mac Gabhann F. Site-Specific Phosphorylation of VEGFR2 Is Mediated by Receptor Trafficking: Insights from a Computational Model. PLoS Comput Biol 2015; 11:e1004158. [PMID: 26067165 PMCID: PMC4466579 DOI: 10.1371/journal.pcbi.1004158] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 01/25/2015] [Indexed: 02/05/2023] Open
Abstract
Matrix-binding isoforms and non-matrix-binding isoforms of vascular endothelial growth factor (VEGF) are both capable of stimulating vascular remodeling, but the resulting blood vessel networks are structurally and functionally different. Here, we develop and validate a computational model of the binding of soluble and immobilized ligands to VEGF receptor 2 (VEGFR2), the endosomal trafficking of VEGFR2, and site-specific VEGFR2 tyrosine phosphorylation to study differences in induced signaling between these VEGF isoforms. In capturing essential features of VEGFR2 signaling and trafficking, our model suggests that VEGFR2 trafficking parameters are largely consistent across multiple endothelial cell lines. Simulations demonstrate distinct localization of VEGFR2 phosphorylated on Y1175 and Y1214. This is the first model to clearly show that differences in site-specific VEGFR2 activation when stimulated with immobilized VEGF compared to soluble VEGF can be accounted for by altered trafficking of VEGFR2 without an intrinsic difference in receptor activation. The model predicts that Neuropilin-1 can induce differences in the surface-to-internal distribution of VEGFR2. Simulations also show that ligated VEGFR2 and phosphorylated VEGFR2 levels diverge over time following stimulation. Using this model, we identify multiple key levers that alter how VEGF binding to VEGFR2 results in different coordinated patterns of multiple downstream signaling pathways. Specifically, simulations predict that VEGF immobilization, interactions with Neuropilin-1, perturbations of VEGFR2 trafficking, and changes in expression or activity of phosphatases acting on VEGFR2 all affect the magnitude, duration, and relative strength of VEGFR2 phosphorylation on tyrosines 1175 and 1214, and they do so predictably within our single consistent model framework. Vascular endothelial growth factor (VEGF) is an important regulator of blood vessel growth. To date, therapies attempting to harness the VEGF system to promote blood vessel growth (e.g. for wound healing or ischemic disease) have achieved only limited success. To improve VEGF-based therapies, we need to better understand how VEGF promotes development of functional blood vessels. We have developed a computational model of VEGF binding to the receptor VEGFR2, trafficking of VEGFR2 through endosomal compartments in the cell, and activation of VEGFR2 on several tyrosine residues. The pattern of tyrosines activated on VEGFR2 influences cell behavior, promoting cell survival, proliferation, or migration. The combination of these cues influences the diameter of vessels, degree of branching, and leakiness of the resultant vessel network. Our model shows that changes in VEGFR2 trafficking as a result of VEGF immobilization to the extracellular matrix are sufficient to describe observed changes in the pattern of VEGFR2 activation compared to stimulation with purely soluble VEGF. This model can be used to predict how VEGF immobilization, interactions with co-receptors or proteins that deactivate VEGFR2, and changes to VEGFR2 trafficking can be tuned to promote development of functional blood vessel networks for tissue engineering applications.
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Affiliation(s)
- Lindsay Wendel Clegg
- Institute for Computational Medicine and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
- * E-mail:
| | - Feilim Mac Gabhann
- Institute for Computational Medicine and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
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