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Kocaaga B, Inan T, Yasar Nİ, Yalcin CE, Sungur FA, Kurkcuoglu O, Demiroz A, Komurcu H, Kizilkilic O, Aydin SY, Aydin Ulgen O, Güner FS, Arslan H. Innovative Use of an Injectable, Self-Healing Drug-Loaded Pectin-Based Hydrogel for Micro- and Supermicro-Vascular Anastomoses. Biomacromolecules 2024; 25:3959-3975. [PMID: 38934558 PMCID: PMC11238333 DOI: 10.1021/acs.biomac.4c00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Microvascular surgery plays a crucial role in reconnecting micrometer-scale vessel ends. Suturing remains the gold standard technique for small vessels; however, suturing the collapsed lumen of microvessels is challenging and time-consuming, with the risk of misplaced sutures leading to failure. Although multiple solutions have been reported, the emphasis has predominantly been on resolving challenges related to arteries rather than veins, and none has proven superior. In this study, we introduce an innovative solution to address these challenges through the development of an injectable lidocaine-loaded pectin hydrogel by using computational and experimental methods. To understand the extent of interactions between the drug and the pectin chain, molecular dynamics (MD) simulations and quantum mechanics (QM) calculations were conducted in the first step of the research. Then, a series of experimental studies were designed to prepare lidocaine-loaded injectable pectin-based hydrogels, and their characterization was performed by using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and rheological analysis. After all the results were evaluated, the drug-loaded pectin-based hydrogel exhibiting self-healing properties was selected as a potential candidate for in vivo studies to determine its performance during operation. In this context, the hydrogel was injected into the divided vessel ends and perivascular area, allowing for direct suturing through the gel matrix. While our hydrogel effectively prevented vasospasm and facilitated micro- and supermicro-vascular anastomoses, it was noted that it did not cause significant changes in late-stage imaging and histopathological analysis up to 6 months. We strongly believe that pectin-based hydrogel potentially enhanced microlevel arterial, lymphatic, and particularly venous anastomoses.
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Affiliation(s)
- Banu Kocaaga
- Department of Chemical Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Tugce Inan
- Department of Chemical Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Nesrin İsil Yasar
- Informatics Institute, Computational Science and Engineering Division, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Can Ege Yalcin
- Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul University-Cerrahpasa, Istanbul 34089, Turkey
| | - Fethiye Aylin Sungur
- Informatics Institute, Computational Science and Engineering Division, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Ozge Kurkcuoglu
- Department of Chemical Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Anil Demiroz
- Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul University-Cerrahpasa, Istanbul 34089, Turkey
| | - Hasan Komurcu
- Department of Plastic, Reconstructive and Aesthetic Surgery, Balat Or-Ahayim Hastanesi, Istanbul 34087, Turkey
| | - Osman Kizilkilic
- Cerrahpasa Medical Faculty, Department of Interventional Radiology, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Servet Yekta Aydin
- Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul University-Cerrahpasa, Istanbul 34089, Turkey
| | - Ovgu Aydin Ulgen
- Cerrahpasa Medical Faculty, Department of Pathology, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Fatma Seniha Güner
- Department of Chemical Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
- Sabancı University Nanotechnology Research and Application Center, Istanbul 34956, Turkey
| | - Hakan Arslan
- Cerrahpasa Medical Faculty, Department of Plastic, Reconstructive and Aesthetic Surgery, Istanbul University-Cerrahpasa, Istanbul 34089, Turkey
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Lammers A, Hsu HH, Sundaram S, Gagnon KA, Kim S, Lee JH, Tung YC, Eyckmans J, Chen CS. Rapid Tissue Perfusion Using Sacrificial Percolation of Anisotropic Networks. MATTER 2024; 7:2184-2204. [PMID: 39221109 PMCID: PMC11360881 DOI: 10.1016/j.matt.2024.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Tissue engineering has long sought to rapidly generate perfusable vascularized tissues with vessel sizes spanning those seen in humans. Current techniques such as biological 3D printing (top-down) and cellular self-assembly (bottom-up) are resource intensive and have not overcome the inherent tradeoff between vessel resolution and assembly time, limiting their utility and scalability for engineering tissues. We present a flexible and scalable technique termed SPAN - Sacrificial Percolation of Anisotropic Networks, where a network of perfusable channels is created throughout a tissue in minutes, irrespective of its size. Conduits with length scales spanning arterioles to capillaries are generated using pipettable alginate fibers that interconnect above a percolation density threshold and are then degraded within constructs of arbitrary size and shape. SPAN is readily used within common tissue engineering processes, can be used to generate endothelial cell-lined vasculature in a multi-cell type construct, and paves the way for rapid assembly of perfusable tissues.
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Affiliation(s)
- Alex Lammers
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Heng-Hua Hsu
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Subramanian Sundaram
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Keith A. Gagnon
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Sudong Kim
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Joshua H. Lee
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Yi-Chung Tung
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Jeroen Eyckmans
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Christopher S. Chen
- The Biological Design Center and Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
- Lead contact
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Qian E, Kang Y. Branched Channels in Porous β-Tricalcium Phosphate Scaffold Promote Vascularization. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19081-19093. [PMID: 38442339 DOI: 10.1021/acsami.3c17328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Rapid and efficient vascularization is still considerably challenging for a porous β-tricalcium phosphate (β-TCP) scaffold to achieve. To overcome this challenge, branched channels were created in the porous β-TCP scaffold by using 3D printing and a template-casting method to facilitate the instant flow of blood supply. Human bone mesenchymal stem cells (hBMSCs) and human umbilical vein endothelial cells (HUVECs) were seeded in the channeled porous scaffolds and characterized through a double-stranded DNA (dsDNA) assay, alkaline phosphatase (ALP) assay, and cell migration. Channeled porous β-TCP scaffolds were then implanted in the subcutaneous pockets of mice. Histological staining and immunohistochemical staining on vascularization and bone-related markers were carried out on the embedded paraffin sections. Results from in vitro experiments showed that branched channels significantly promoted HUVECs' infiltration, migration, proliferation, and angiogenesis, and also promoted the proliferation and osteogenesis differentiation of hBMSCs. In vivo implantation results showed that, in the early stage after implantation, cells significantly migrated into branched channeled scaffolds. More matured blood vessels formed in the branched channeled scaffolds compared to that in nonchanneled and straight channeled scaffolds. Beside promoting vascularization, the branched channels also stimulated the infiltration of bone-related cells into the scaffolds. These results suggested that the geometric design of branched channels in the porous β-TCP scaffold promoted rapid vascularization and potentially stimulated bone cells recruitment.
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Affiliation(s)
- Enze Qian
- Department of Ocean & Mechanical Engineering, Florida Atlantic University, Boca Raton, Florida 33431, United States
| | - Yunqing Kang
- Department of Ocean & Mechanical Engineering, Florida Atlantic University, Boca Raton, Florida 33431, United States
- Department of Biomedical Science, Florida Atlantic University, Boca Raton, Florida 33431, United States
- Faculty of Integrative Biology Ph.D. Program, Department of Biological Science, Florida Atlantic University, Boca Raton, Florida 33431, United States
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
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Ataie Z, Horchler S, Jaberi A, Koduru SV, El-Mallah JC, Sun M, Kheirabadi S, Kedzierski A, Risbud A, Silva ARAE, Ravnic DJ, Sheikhi A. Accelerating Patterned Vascularization Using Granular Hydrogel Scaffolds and Surgical Micropuncture. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307928. [PMID: 37824280 DOI: 10.1002/smll.202307928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Indexed: 10/14/2023]
Abstract
Bulk hydrogel scaffolds are common in reconstructive surgery. They allow for the staged repair of soft tissue loss by providing a base for revascularization. Unfortunately, they are limited by both slow and random vascularization, which may manifest as treatment failure or suboptimal repair. Rapidly inducing patterned vascularization within biomaterials has profound translational implications for current clinical treatment paradigms and the scaleup of regenerative engineering platforms. To address this long-standing challenge, a novel microsurgical approach and granular hydrogel scaffold (GHS) technology are co-developed to hasten and pattern microvascular network formation. In surgical micropuncture (MP), targeted recipient blood vessels are perforated using a microneedle to accelerate cell extravasation and angiogenic outgrowth. By combining MP with an adjacent GHS with precisely tailored void space architecture, microvascular pattern formation as assessed by density, diameter, length, and intercapillary distance is rapidly guided. This work opens new translational opportunities for microvascular engineering, advancing reconstructive surgery, and regenerative medicine.
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Affiliation(s)
- Zaman Ataie
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Summer Horchler
- Division of Plastic Surgery, Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, 17033, USA
| | - Arian Jaberi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Srinivas V Koduru
- Division of Plastic Surgery, Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, 17033, USA
| | - Jessica C El-Mallah
- Division of Plastic Surgery, Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, 17033, USA
| | - Mingjie Sun
- Division of Plastic Surgery, Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, 17033, USA
| | - Sina Kheirabadi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Alexander Kedzierski
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Aneesh Risbud
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | | | - Dino J Ravnic
- Division of Plastic Surgery, Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, 17033, USA
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Amir Sheikhi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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Zhou Y, Wu Y, Paul R, Qin X, Liu Y. Hierarchical Vessel Network-Supported Tumor Model-on-a-Chip Constructed by Induced Spontaneous Anastomosis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6431-6441. [PMID: 36693007 PMCID: PMC10249001 DOI: 10.1021/acsami.2c19453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 01/10/2023] [Indexed: 05/14/2023]
Abstract
The vascular system in living tissues is a highly organized system that consists of vessels with various diameters for nutrient delivery and waste transport. In recent years, many vessel construction methods have been developed for building vascularized on-chip tissue models. These methods usually focused on constructing vessels at a single scale. In this work, a method that can build a hierarchical and perfusable vessel networks was developed. By providing flow stimuli and proper HUVEC concentration, spontaneous anastomosis between endothelialized lumens and the self-assembled capillary network was induced; thus, a perfusable network containing vessels at different scales was achieved. With this simple method, an in vivo-like hierarchical vessel-supported tumor model was prepared and its application in anticancer drug testing was demonstrated. The tumor growth rate was predicted by combining computational fluid dynamics simulation and a tumor growth mathematical model to understand the vessel perfusability effect on tumor growth rate in the hierarchical vessel network. Compared to the tumor model without capillary vessels, the hierarchical vessel-supported tumor shows a significantly higher growth rate and drug delivery efficiency.
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Affiliation(s)
- Yuyuan Zhou
- Department
of Bioengineering, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Yue Wu
- Department
of Bioengineering, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Ratul Paul
- Department
of Mechanical Engineering & Mechanics, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Xiaochen Qin
- Department
of Bioengineering, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Yaling Liu
- Department
of Bioengineering, Lehigh University, Bethlehem, Pennsylvania18015, United States
- Department
of Mechanical Engineering & Mechanics, Lehigh University, Bethlehem, Pennsylvania18015, United States
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Tissue Engineering Approaches to Uncover Therapeutic Targets for Endothelial Dysfunction in Pathological Microenvironments. Int J Mol Sci 2022; 23:ijms23137416. [PMID: 35806421 PMCID: PMC9266895 DOI: 10.3390/ijms23137416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 02/07/2023] Open
Abstract
Endothelial cell dysfunction plays a central role in many pathologies, rendering it crucial to understand the underlying mechanism for potential therapeutics. Tissue engineering offers opportunities for in vitro studies of endothelial dysfunction in pathological mimicry environments. Here, we begin by analyzing hydrogel biomaterials as a platform for understanding the roles of the extracellular matrix and hypoxia in vascular formation. We next examine how three-dimensional bioprinting has been applied to recapitulate healthy and diseased tissue constructs in a highly controllable and patient-specific manner. Similarly, studies have utilized organs-on-a-chip technology to understand endothelial dysfunction's contribution to pathologies in tissue-specific cellular components under well-controlled physicochemical cues. Finally, we consider studies using the in vitro construction of multicellular blood vessels, termed tissue-engineered blood vessels, and the spontaneous assembly of microvascular networks in organoids to delineate pathological endothelial dysfunction.
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