51
|
Fercana GR, Yerneni S, Billaud M, Hill JC, VanRyzin P, Richards TD, Sicari BM, Johnson SA, Badylak SF, Campbell PG, Gleason TG, Phillippi JA. Perivascular extracellular matrix hydrogels mimic native matrix microarchitecture and promote angiogenesis via basic fibroblast growth factor. Biomaterials 2017; 123:142-154. [PMID: 28167392 DOI: 10.1016/j.biomaterials.2017.01.037] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 01/27/2017] [Indexed: 01/12/2023]
Abstract
Extracellular matrix (ECM)-derived bioscaffolds have been shown to elicit tissue repair through retention of bioactive signals. Given that the adventitia of large blood vessels is a richly vascularized microenvironment, we hypothesized that perivascular ECM contains bioactive signals that influence cells of blood vessel lineages. ECM bioscaffolds were derived from decellularized human and porcine aortic adventitia (hAdv and pAdv, respectively) and then shown have minimal DNA content and retain elastin and collagen proteins. Hydrogel formulations of hAdv and pAdv ECM bioscaffolds exhibited gelation kinetics similar to ECM hydrogels derived from porcine small intestinal submucosa (pSIS). hAdv and pAdv ECM hydrogels displayed thinner, less undulated, and fibrous microarchitecture reminiscent of native adventitia, with slight differences in ultrastructure visible in comparison to pSIS ECM hydrogels. Pepsin-digested pAdv and pSIS ECM bioscaffolds increased proliferation of human adventitia-derived endothelial cells and this effect was mediated in part by basic fibroblast growth factor (FGF2). Human endothelial cells cultured on Matrigel substrates formed more numerous and longer tube-like structures when supplemented with pAdv ECM bioscaffolds, and FGF2 mediated this matrix signaling. ECM bioscaffolds derived from pAdv promoted FGF2-dependent in vivo angiogenesis in the chick chorioallantoic membrane model. Using an angiogenesis-focused protein array, we detected 55 angiogenesis-related proteins, including FGF2 in hAdv, pAdv and pSIS ECMs. Interestingly, 19 of these factors were less abundant in ECMs bioscaffolds derived from aneurysmal specimens of human aorta when compared with non-aneurysmal (normal) specimens. This study reveals that Adv ECM hydrogels recapitulate matrix fiber microarchitecture of native adventitia, and retain angiogenesis-related actors and bioactive properties such as FGF2 signaling capable of influencing processes important for angiogenesis. This work supports the use of Adv ECM bioscaffolds for both discovery biology and potential translation towards microvascular regeneration in clinical applications.
Collapse
Affiliation(s)
- George R Fercana
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Saigopalakrishna Yerneni
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Marie Billaud
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Jennifer C Hill
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Paul VanRyzin
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Tara D Richards
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Brian M Sicari
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Scott A Johnson
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Stephen F Badylak
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Phil G Campbell
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Thomas G Gleason
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Julie A Phillippi
- Department of Cardiothoracic Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| |
Collapse
|
52
|
Boire TC, Balikov DA, Lee Y, Guth CM, Cheung-Flynn J, Sung HJ. Biomaterial-Based Approaches to Address Vein Graft and Hemodialysis Access Failures. Macromol Rapid Commun 2016; 37:1860-1880. [PMID: 27673474 PMCID: PMC5156561 DOI: 10.1002/marc.201600412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/15/2016] [Indexed: 12/19/2022]
Abstract
Veins used as grafts in heart bypass or as access points in hemodialysis exhibit high failure rates, thereby causing significant morbidity and mortality for patients. Interventional or revisional surgeries required to correct these failures have been met with limited success and exorbitant costs, particularly for the US Centers for Medicare & Medicaid Services. Vein stenosis or occlusion leading to failure is primarily the result of neointimal hyperplasia. Systemic therapies have achieved little long-term success, indicating the need for more localized, sustained, biomaterial-based solutions. Numerous studies have demonstrated the ability of external stents to reduce neointimal hyperplasia. However, successful results from animal models have failed to translate to the clinic thus far, and no external stent is currently approved for use in the US to prevent vein graft or hemodialysis access failures. This review discusses current progress in the field, design considerations, and future perspectives for biomaterial-based external stents. More comparative studies iteratively modulating biomaterial and biomaterial-drug approaches are critical in addressing mechanistic knowledge gaps associated with external stent application to the arteriovenous environment. Addressing these gaps will ultimately lead to more viable solutions that prevent vein graft and hemodialysis access failures.
Collapse
Affiliation(s)
- Timothy C Boire
- Department of Biomedical Engineering, Vanderbilt University, 37235, Nashville, TN, USA
| | - Daniel A Balikov
- Department of Biomedical Engineering, Vanderbilt University, 37235, Nashville, TN, USA
| | - Yunki Lee
- Department of Biomedical Engineering, Vanderbilt University, 37235, Nashville, TN, USA
| | - Christy M Guth
- Division of Vascular Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, 37235, USA
| | - Joyce Cheung-Flynn
- Division of Vascular Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, 37235, USA
| | - Hak-Joon Sung
- Department of Biomedical Engineering, Vanderbilt University, 37235, Nashville, TN, USA
- Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, 120-752, Republic of Korea
| |
Collapse
|
53
|
In Vivo Remodeling of Fibroblast-Derived Vascular Scaffolds Implanted for 6 Months in Rats. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3762484. [PMID: 27999795 PMCID: PMC5143784 DOI: 10.1155/2016/3762484] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 10/10/2016] [Accepted: 10/30/2016] [Indexed: 11/24/2022]
Abstract
There is a clinical need for tissue-engineered small-diameter (<6 mm) vascular grafts since clinical applications are halted by the limited suitability of autologous or synthetic grafts. This study uses the self-assembly approach to produce a fibroblast-derived decellularized vascular scaffold (FDVS) that can be available off-the-shelf. Briefly, extracellular matrix scaffolds were produced using human dermal fibroblasts sheets rolled around a mandrel, maintained in culture to allow for the formation of cohesive and three-dimensional tubular constructs, and decellularized by immersion in deionized water. The FDVSs were implanted as an aortic interpositional graft in six Sprague-Dawley rats for 6 months. Five out of the six implants were still patent 6 months after the surgery. Histological analysis showed the infiltration of cells on both abluminal and luminal sides, and immunofluorescence analysis suggested the formation of neomedia comprised of smooth muscle cells and lined underneath with an endothelium. Furthermore, to verify the feasibility of producing tissue-engineered blood vessels of clinically relevant length and diameter, scaffolds with a 4.6 mm inner diameter and 17 cm in length were fabricated with success and stored for an extended period of time, while maintaining suitable properties following the storage period. This novel demonstration of the potential of the FDVS could accelerate the clinical availability of tissue-engineered blood vessels and warrants further preclinical studies.
Collapse
|
54
|
Wengerter BC, Emre G, Park JY, Geibel J. Three-dimensional Printing in the Intestine. Clin Gastroenterol Hepatol 2016; 14:1081-5. [PMID: 27189913 DOI: 10.1016/j.cgh.2016.05.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 02/07/2023]
Abstract
Intestinal transplantation remains a life-saving option for patients with severe intestinal failure. With the advent of advanced tissue engineering techniques, great strides have been made toward manufacturing replacement tissues and organs, including the intestine, which aim to avoid transplant-related complications. The current paradigm is to seed a biocompatible support material (scaffold) with a desired cell population to generate viable replacement tissue. Although this technique has now been extended by the three-dimensional (3D) printing of geometrically complex scaffolds, the overall approach is hindered by relatively slow turnover and negative effects of residual scaffold material, which affects final clinical outcome. Methods recently developed for scaffold-free 3D bioprinting may overcome such obstacles and should allow for rapid manufacture and deployment of "bioprinted organs." Much work remains before 3D bioprinted tissues can enter clinical use. In this brief review we examine the present state and future perspectives of this nascent technology before full clinical implementation.
Collapse
Affiliation(s)
- Brian C Wengerter
- Department of Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Gulus Emre
- Department of Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Jea Young Park
- Department of Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - John Geibel
- Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.
| |
Collapse
|
55
|
Jiang B, Suen R, Wang JJ, Zhang ZJ, Wertheim JA, Ameer GA. Mechanocompatible Polymer-Extracellular-Matrix Composites for Vascular Tissue Engineering. Adv Healthc Mater 2016; 5:1594-605. [PMID: 27109033 DOI: 10.1002/adhm.201501003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/03/2016] [Indexed: 11/09/2022]
Abstract
Small-diameter vascular grafts developed from vascular extracellular matrix (ECM) can potentially be used for bypass surgeries and other vascular reconstruction and repair procedures. The addition of heparin to the ECM improves graft hemocompatibility but often involves chemical cross-linking, which increases ECM mechanical stiffness compared to native arteries. Herein, the importance of maintaining ECM mechanocompatibility is demonstrated, and a mechanocompatible strategy to immobilize heparin onto the ECM via a biodegradable elastomer is described. Specifically, poly(1,8-octamethylene citrate)-co-cysteine is hybridized to the ECM, forming a polymer-ECM composite that allows for heparin immobilization via maleimide-thiol "click" chemistry. Heparinized composites reduce platelet adhesion by >60% in vitro, without altering the elastic modulus of the ECM. In a rat abdominal aortic interposition model, intimal hyperplasia in heparinized mechanocompatible grafts is 65% lower when compared to ECM-only control grafts at four weeks. In contrast, grafts that are heparinized with carbodiimide chemistry exhibit increased intimal hyperplasia (4.2-fold) and increased macrophage infiltration (3.5-fold) compared to ECM-only control grafts. All grafts show similar, partial endothelial cell coverage and little to no ECM remodeling. Overall, a mechanocompatible strategy to improve ECM thromboresistance is described and the importance of ECM mechanical properties for proper in vivo graft performance is highlighted.
Collapse
Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Rachel Suen
- Weinberg College of Arts and Sciences; Northwestern University; Evanston IL 60208 USA
| | - Jiao-Jing Wang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Zheng J. Zhang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Jason A. Wertheim
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Department of Surgery; Jesse Brown VA Medical Center; Chicago IL 60612 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA. Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
| | - Guillermo A. Ameer
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA
- Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
| |
Collapse
|
56
|
Gui L, Dash BC, Luo J, Qin L, Zhao L, Yamamoto K, Hashimoto T, Wu H, Dardik A, Tellides G, Niklason LE, Qyang Y. Implantable tissue-engineered blood vessels from human induced pluripotent stem cells. Biomaterials 2016; 102:120-9. [PMID: 27336184 DOI: 10.1016/j.biomaterials.2016.06.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/24/2016] [Accepted: 06/02/2016] [Indexed: 12/24/2022]
Abstract
Derivation of functional vascular smooth muscle cells (VSMCs) from human induced pluripotent stem cells (hiPSCs) to generate tissue-engineered blood vessels (TEBVs) holds great potential in treating patients with vascular diseases. Herein, hiPSCs were differentiated into alpha-smooth muscle actin (α-SMA) and calponin-positive VSMCs, which were seeded onto polymer scaffolds in bioreactors for vascular tissue growth. A functional TEBV with abundant collagenous matrix and sound mechanics resulted, which contained cells largely positive for α-SMA and smooth muscle myosin heavy chain (SM-MHC). Moreover, when hiPSC-derived TEBV segments were implanted into nude rats as abdominal aorta interposition grafts, they remained unruptured and patent with active vascular remodeling, and showed no evidence of teratoma formation during a 2-week proof-of-principle study. Our studies represent the development of the first implantable TEBVs based on hiPSCs, and pave the way for developing autologous or allogeneic grafts for clinical use in patients with vascular disease.
Collapse
Affiliation(s)
- Liqiong Gui
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA
| | - Biraja C Dash
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06520, USA; Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Jiesi Luo
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06520, USA
| | - Lingfeng Qin
- Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Liping Zhao
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA
| | - Kota Yamamoto
- Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Takuya Hashimoto
- Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Hongwei Wu
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06520, USA
| | - Alan Dardik
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - George Tellides
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Laura E Niklason
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA; Department of Biomedical Engineering, Yale University, New Haven, CT 06519, USA; Yale Stem Cell Center, New Haven, CT 06520, USA
| | - Yibing Qyang
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06520, USA; Yale Stem Cell Center, New Haven, CT 06520, USA; Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA.
| |
Collapse
|
57
|
Ryan AJ, Brougham CM, Garciarena CD, Kerrigan SW, O'Brien FJ. Towards 3D in vitro models for the study of cardiovascular tissues and disease. Drug Discov Today 2016; 21:1437-1445. [PMID: 27117348 DOI: 10.1016/j.drudis.2016.04.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 04/01/2016] [Accepted: 04/18/2016] [Indexed: 01/15/2023]
Abstract
The field of tissue engineering is developing biomimetic biomaterial scaffolds that are showing increasing therapeutic potential for the repair of cardiovascular tissues. However, a major opportunity exists to use them as 3D in vitro models for the study of cardiovascular tissues and disease in addition to drug development and testing. These in vitro models can span the gap between 2D culture and in vivo testing, thus reducing the cost, time, and ethical burden of current approaches. Here, we outline the progress to date and the requirements for the development of ideal in vitro 3D models for blood vessels, heart valves, and myocardial tissue.
Collapse
Affiliation(s)
- Alan J Ryan
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland; Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
| | - Claire M Brougham
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland; School of Mechanical and Design Engineering, Dublin Institute of Technology, Bolton Street, Dublin 1, Ireland
| | - Carolina D Garciarena
- Cardiovascular Infection Research Group, School of Pharmacy & Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
| | - Steven W Kerrigan
- Cardiovascular Infection Research Group, School of Pharmacy & Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland; Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland.
| |
Collapse
|
58
|
Turner EC, Huang CL, Sawhney N, Govindarajan K, Clover AJP, Martin K, Browne TC, Whelan D, Kumar AHS, Mackrill JJ, Wang S, Schmeckpeper J, Stocca A, Pierce WG, Leblond AL, Cai L, O'Sullivan DM, Buneker CK, Choi J, MacSharry J, Ikeda Y, Russell SJ, Caplice NM. A Novel Selectable Islet 1 Positive Progenitor Cell Reprogrammed to Expandable and Functional Smooth Muscle Cells. Stem Cells 2016; 34:1354-68. [PMID: 26840832 DOI: 10.1002/stem.2319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 12/17/2015] [Indexed: 11/08/2022]
Abstract
Disorders affecting smooth muscle structure/function may require technologies that can generate large scale, differentiated and contractile smooth muscle cells (SMC) suitable for cell therapy. To date no clonal precursor population that provides large numbers of differentiated SMC in culture has been identified in a rodent. Identification of such cells may also enhance insight into progenitor cell fate decisions and the relationship between smooth muscle precursors and disease states that implicate differentiated SMC. In this study, we used classic clonal expansion techniques to identify novel self-renewing Islet 1 (Isl-1) positive primitive progenitor cells (PPC) within rat bone marrow that exhibited canonical stem cell markers and preferential differentiation towards a smooth muscle-like fate. We subsequently used molecular tagging to select Isl-1 positive clonal populations from expanded and de novo marrow cell populations. We refer to these previously undescribed cells as the PPC given its stem cell marker profile, and robust self-renewal capacity. PPC could be directly converted into induced smooth muscle cells (iSMC) using single transcription factor (Kruppel-like factor 4) knockdown or transactivator (myocardin) overexpression in contrast to three control cells (HEK 293, endothelial cells and mesenchymal stem cells) where such induction was not possible. iSMC exhibited immuno- and cytoskeletal-phenotype, calcium signaling profile and contractile responses similar to bona fide SMC. Passaged iSMC could be expanded to a scale sufficient for large scale tissue replacement. PPC and reprogramed iSMC so derived may offer future opportunities to investigate molecular, structure/function and cell-based replacement therapy approaches to diverse cardiovascular, respiratory, gastrointestinal, and genitourinary diseases that have as their basis smooth muscle cell functional aberrancy or numerical loss. Stem Cells 2016;34:1354-1368.
Collapse
Affiliation(s)
- Elizabeth C Turner
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Chien-Ling Huang
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Neha Sawhney
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Kalaimathi Govindarajan
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Anthony J P Clover
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Kenneth Martin
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Tara C Browne
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Derek Whelan
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Arun H S Kumar
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - John J Mackrill
- Department of Physiology, University College Cork, Biosciences Institute, College Road, Cork, Ireland
| | - Shaohua Wang
- Molecular Medicine Program, Mayo Clinic and Foundation, 200 First St, Rochester, Minnesota, 55905
| | - Jeffrey Schmeckpeper
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Alessia Stocca
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - William G Pierce
- Department of Physiology, University College Cork, Biosciences Institute, College Road, Cork, Ireland
| | - Anne-Laure Leblond
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Liquan Cai
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Donnchadh M O'Sullivan
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Chirlei K Buneker
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - Janet Choi
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| | - John MacSharry
- Alimentary Pharmabiotic Centre (APC), Biosciences Institute, University College Cork, Cork, Ireland
| | - Yasuhiro Ikeda
- Molecular Medicine Program, Mayo Clinic and Foundation, 200 First St, Rochester, Minnesota, 55905
| | - Stephen J Russell
- Molecular Medicine Program, Mayo Clinic and Foundation, 200 First St, Rochester, Minnesota, 55905
| | - Noel M Caplice
- Centre for Research in Vascular Biology (CRVB), Biosciences Institute, University College Cork, Cork, Ireland
| |
Collapse
|
59
|
Hinderer S, Brauchle E, Schenke-Layland K. Generation and Assessment of Functional Biomaterial Scaffolds for Applications in Cardiovascular Tissue Engineering and Regenerative Medicine. Adv Healthc Mater 2015; 4:2326-41. [PMID: 25778713 PMCID: PMC4745029 DOI: 10.1002/adhm.201400762] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/11/2015] [Indexed: 12/27/2022]
Abstract
Current clinically applicable tissue and organ replacement therapies are limited in the field of cardiovascular regenerative medicine. The available options do not regenerate damaged tissues and organs, and, in the majority of the cases, show insufficient restoration of tissue function. To date, anticoagulant drug-free heart valve replacements or growing valves for pediatric patients, hemocompatible and thrombus-free vascular substitutes that are smaller than 6 mm, and stem cell-recruiting delivery systems that induce myocardial regeneration are still only visions of researchers and medical professionals worldwide and far from being the standard of clinical treatment. The design of functional off-the-shelf biomaterials as well as automatable and up-scalable biomaterial processing methods are the focus of current research endeavors and of great interest for fields of tissue engineering and regenerative medicine. Here, various approaches that aim to overcome the current limitations are reviewed, focusing on biomaterials design and generation methods for myocardium, heart valves, and blood vessels. Furthermore, novel contact- and marker-free biomaterial and extracellular matrix assessment methods are highlighted.
Collapse
Affiliation(s)
- Svenja Hinderer
- Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB), Nobelstrasse 12, Stuttgart, 70569, Germany
- Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University Tübingen, Silcherstr. 7/1, Tübingen, 72076, Germany
| | - Eva Brauchle
- Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB), Nobelstrasse 12, Stuttgart, 70569, Germany
- Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University Tübingen, Silcherstr. 7/1, Tübingen, 72076, Germany
- Institute of Interfacial Process Engineering and Plasma Technology (IGVP), University of Stuttgart, Nobelstrasse 12, Stuttgart, 70569, Germany
| | - Katja Schenke-Layland
- Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB), Nobelstrasse 12, Stuttgart, 70569, Germany
- Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University Tübingen, Silcherstr. 7/1, Tübingen, 72076, Germany
- Department of Medicine/Cardiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at the, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| |
Collapse
|
60
|
Pellegata AF, Dominioni T, Ballo F, Maestroni S, Asnaghi MA, Zerbini G, Zonta S, Mantero S. Arterial Decellularized Scaffolds Produced Using an Innovative Automatic System. Cells Tissues Organs 2015; 200:363-73. [PMID: 26562773 DOI: 10.1159/000439082] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2015] [Indexed: 11/19/2022] Open
Abstract
There is still an unmet clinical need for small-caliber artery substitution. Decellularized scaffolds in tissue engineering represent a promising solution. We have developed an innovative system for the automatic decellularization of blood vessels, used to process pig arteries. The system is able to automatically drive a decellularization process in a safe and reliable environment, with complex time patterns, using up to three different decellularization solutions, and providing at the same time a physical stress to improve the decellularization. The decellularization of pig arteries was evaluated by means of histology, DNA quantification and mechanical testing. Outcomes showed scaffolds with no cellular or nuclear remnants and a well-preserved tissue structure, corroborated by mechanical properties similar to native tissue. Decellularized scaffolds were seeded on the inner layer with human endothelial cells and implanted as iliac artery replacement in 4 pharmacologically immune-compromised pigs. This chimeric model was performed as a very preliminary evaluation to investigate the performances of these scaffolds in vivo, and to investigate the fate of seeded cells. Recipients were sacrificed on day 14 and day 70 after surgery, and vessels were found to be patent and with no evidence of thrombi formation. The inner layer was covered by endothelial cells, and the migration of cells positive for α-smooth-muscle actin was observed from the outer layer towards the tunica media. Intriguingly, the endothelial cells on explanted vessels were entirely derived from the host while the seeded cells were lost. In conclusion, this work presents a novel tool for a safe and controlled production of arterial scaffolds, with good decellularization outcomes and a good performance in a short-term, large-animal implantation.
Collapse
Affiliation(s)
- Alessandro F Pellegata
- Department of Chemistry, Materials and Chemical Engineering x2018;Giulio Natta', Politecnico di Milano, Milan, Italy
| | | | | | | | | | | | | | | |
Collapse
|
61
|
Kim K, Wagner WR. Non-invasive and Non-destructive Characterization of Tissue Engineered Constructs Using Ultrasound Imaging Technologies: A Review. Ann Biomed Eng 2015; 44:621-35. [PMID: 26518412 DOI: 10.1007/s10439-015-1495-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/23/2015] [Indexed: 12/14/2022]
Abstract
With the rapid expansion of biomaterial development and coupled efforts to translate such advances toward the clinic, non-invasive and non-destructive imaging tools to evaluate implants in situ in a timely manner are critically needed. The required multi-level information is comprehensive, including structural, mechanical, and biological changes such as scaffold degradation, mechanical strength, cell infiltration, extracellular matrix formation and vascularization to name a few. With its inherent advantages of non-invasiveness and non-destructiveness, ultrasound imaging can be an ideal tool for both preclinical and clinical uses. In this review, currently available ultrasound imaging technologies that have been applied in vitro and in vivo for tissue engineering and regenerative medicine are discussed and some new emerging ultrasound technologies and multi-modality approaches utilizing ultrasound are introduced.
Collapse
Affiliation(s)
- Kang Kim
- Center for Ultrasound Molecular Imaging and Therapeutics, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA. .,Heart and Vascular Institute, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, 15213, USA. .,Department of Bioengineering, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15213, USA. .,McGowan Institute for Regenerative Medicine, University of Pittsburgh and UPMC, Pittsburgh, PA, 15219, USA.
| | - William R Wagner
- Department of Bioengineering, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15213, USA.,Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh and UPMC, Pittsburgh, PA, 15219, USA
| |
Collapse
|
62
|
Pashneh-Tala S, MacNeil S, Claeyssens F. The Tissue-Engineered Vascular Graft-Past, Present, and Future. TISSUE ENGINEERING PART B-REVIEWS 2015; 22:68-100. [PMID: 26447530 PMCID: PMC4753638 DOI: 10.1089/ten.teb.2015.0100] [Citation(s) in RCA: 451] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cardiovascular disease is the leading cause of death worldwide, with this trend predicted to continue for the foreseeable future. Common disorders are associated with the stenosis or occlusion of blood vessels. The preferred treatment for the long-term revascularization of occluded vessels is surgery utilizing vascular grafts, such as coronary artery bypass grafting and peripheral artery bypass grafting. Currently, autologous vessels such as the saphenous vein and internal thoracic artery represent the gold standard grafts for small-diameter vessels (<6 mm), outperforming synthetic alternatives. However, these vessels are of limited availability, require invasive harvest, and are often unsuitable for use. To address this, the development of a tissue-engineered vascular graft (TEVG) has been rigorously pursued. This article reviews the current state of the art of TEVGs. The various approaches being explored to generate TEVGs are described, including scaffold-based methods (using synthetic and natural polymers), the use of decellularized natural matrices, and tissue self-assembly processes, with the results of various in vivo studies, including clinical trials, highlighted. A discussion of the key areas for further investigation, including graft cell source, mechanical properties, hemodynamics, integration, and assessment in animal models, is then presented.
Collapse
Affiliation(s)
- Samand Pashneh-Tala
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
| | - Sheila MacNeil
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
| |
Collapse
|
63
|
Hong F, Wei B, Chen L. Preliminary Study on Biosynthesis of Bacterial Nanocellulose Tubes in a Novel Double-Silicone-Tube Bioreactor for Potential Vascular Prosthesis. BIOMED RESEARCH INTERNATIONAL 2015; 2015:560365. [PMID: 26090420 PMCID: PMC4452228 DOI: 10.1155/2015/560365] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 10/03/2014] [Accepted: 10/06/2014] [Indexed: 11/17/2022]
Abstract
Bacterial nanocellulose (BNC) has demonstrated a tempting prospect for applications in substitute of small blood vessels. However, present technology is inefficient in production and BNC tubes have a layered structure that may bring danger after implanting. Double oxygen-permeable silicone tubes in different diameters were therefore used as a tube-shape mold and also as oxygenated supports to construct a novel bioreactor for production of the tubular BNC materials. Double cannula technology was used to produce tubular BNC via cultivations with Acetobacter xylinum, and Kombucha, a symbiosis of acetic acid bacteria and yeasts. The results indicated that Kombucha gave higher yield and productivity of BNC than A. xylinum. Bacterial nanocellulose was simultaneously synthesized both on the inner surface of the outer silicone tube and on the outer surface of the inner silicone tube. Finally, the nano BNC fibrils from two directions formed a BNC tube with good structural integrity. Scanning electron microscopy inspection showed that the tubular BNC had a multilayer structure in the beginning but finally it disappeared and an intact BNC tube formed. The mechanical properties of BNC tubes were comparable with the reported value in literatures, demonstrating a great potential in vascular implants or in functional substitutes in biomedicine.
Collapse
Affiliation(s)
- Feng Hong
- Group of Microbiological Engineering and Industrial Biotechnology, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road, No. 2999, Songjiang, Shanghai 201620, China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
| | - Bin Wei
- Group of Microbiological Engineering and Industrial Biotechnology, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road, No. 2999, Songjiang, Shanghai 201620, China
| | - Lin Chen
- Group of Microbiological Engineering and Industrial Biotechnology, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road, No. 2999, Songjiang, Shanghai 201620, China
| |
Collapse
|
64
|
Induced pluripotent stem cell-derived vascular smooth muscle cells: methods and application. Biochem J 2015; 465:185-94. [PMID: 25559088 DOI: 10.1042/bj20141078] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Vascular smooth muscle cells (VSMCs) play a major role in the pathophysiology of cardiovascular diseases. The advent of induced pluripotent stem cell (iPSC) technology and the capability of differentiating into virtually every cell type in the human body make this field a ray of hope for vascular regenerative therapy and understanding of the disease mechanism. In the present review, we first discuss the recent iPSC technology and vascular smooth muscle development from an embryo and then examine different methodologies to derive VSMCs from iPSCs, and their applications in regenerative therapy and disease modelling.
Collapse
|
65
|
Smith RJ, Koobatian MT, Shahini A, Swartz DD, Andreadis ST. Capture of endothelial cells under flow using immobilized vascular endothelial growth factor. Biomaterials 2015; 51:303-312. [PMID: 25771020 PMCID: PMC4361797 DOI: 10.1016/j.biomaterials.2015.02.025] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/27/2015] [Accepted: 02/01/2015] [Indexed: 02/09/2023]
Abstract
We demonstrate the ability of immobilized vascular endothelial growth factor (VEGF) to capture endothelial cells (EC) with high specificity under fluid flow. To this end, we engineered a surface consisting of heparin bound to poly-L-lysine to permit immobilization of VEGF through the C-terminal heparin-binding domain. The immobilized growth factor retained its biological activity as shown by proliferation of EC and prolonged activation of KDR signaling. Using a microfluidic device we assessed the ability to capture EC under a range of shear stresses from low (0.5 dyne/cm2) to physiological (15 dyne/cm2). Capture was significant for all shear stresses tested. Immobilized VEGF was highly selective for EC as evidenced by significant capture of human umbilical vein and ovine pulmonary artery EC but no capture of human dermal fibroblasts, human hair follicle derived mesenchymal stem cells, or mouse fibroblasts. Further, VEGF could capture EC from mixtures with non-EC under low and high shear conditions as well as from complex fluids like whole human blood under high shear. Our findings may have far reaching implications, as they suggest that VEGF could be used to promote endothelialization of vascular grafts or neovascularization of implanted tissues by rare but continuously circulating EC.
Collapse
Affiliation(s)
- Randall J Smith
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA
| | - Maxwell T Koobatian
- Department of Physiology and Biophysics, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA
| | - Aref Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA
| | - Daniel D Swartz
- Department of Physiology and Biophysics, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA; Department of Pediatrics, Women and Children's Hospital of Buffalo, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA; Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA
| | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA; Department of Biomedical Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA; Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA.
| |
Collapse
|
66
|
Fitzpatrick LE, McDevitt TC. Cell-derived matrices for tissue engineering and regenerative medicine applications. Biomater Sci 2015; 3:12-24. [PMID: 25530850 PMCID: PMC4270054 DOI: 10.1039/c4bm00246f] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The development and application of decellularized extracellular matrices (ECM) has grown rapidly in the fields of cell biology, tissue engineering and regenerative medicine in recent years. Similar to decellularized tissues and whole organs, cell-derived matrices (CDMs) represent bioactive, biocompatible materials consisting of a complex assembly of fibrillar proteins, matrix macromolecules and associated growth factors that often recapitulate, at least to some extent, the composition and organization of native ECM microenvironments. The unique ability to engineer CDMs de novo based on cell source and culture methods makes them an attractive alternative to conventional allogeneic and xenogeneic tissue-derived matrices that are currently harvested from cadaveric sources, suffer from inherent heterogeneity, and have limited ability for customization. Although CDMs have been investigated for a number of biomedical applications, including adhesive cell culture substrates, synthetic scaffold coatings, and tissue engineered products, such as heart valves and vascular grafts, the state of the field is still at a relatively nascent stage of development. In this review, we provide an overview of the various applications of CDM and discuss successes to date, current limitations and future directions.
Collapse
Affiliation(s)
| | - Todd C. McDevitt
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, Georgia, USA
- The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| |
Collapse
|
67
|
Tang J, Bao L, Li X, Chen L, Hong FF. Potential of PVA-doped bacterial nano-cellulose tubular composites for artificial blood vessels. J Mater Chem B 2015; 3:8537-8547. [DOI: 10.1039/c5tb01144b] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Introduction of PVA can improve the compliance of bacterial nano-cellulose hydrogel, which has been suggested as a promising biomaterial for artificial blood vessels especially for small-caliber vessels.
Collapse
Affiliation(s)
- Jingyu Tang
- Group of Microbiological Engineering and Industrial Biotechnology
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Luhan Bao
- Group of Microbiological Engineering and Industrial Biotechnology
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Xue Li
- Group of Microbiological Engineering and Industrial Biotechnology
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Lin Chen
- Group of Microbiological Engineering and Industrial Biotechnology
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Feng F. Hong
- Group of Microbiological Engineering and Industrial Biotechnology
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| |
Collapse
|
68
|
Bergmeister H, Seyidova N, Schreiber C, Strobl M, Grasl C, Walter I, Messner B, Baudis S, Fröhlich S, Marchetti-Deschmann M, Griesser M, di Franco M, Krssak M, Liska R, Schima H. Biodegradable, thermoplastic polyurethane grafts for small diameter vascular replacements. Acta Biomater 2015; 11:104-13. [PMID: 25218664 DOI: 10.1016/j.actbio.2014.09.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/01/2014] [Accepted: 09/03/2014] [Indexed: 11/19/2022]
Abstract
Biodegradable vascular grafts with sufficient in vivo performance would be more advantageous than permanent non-degradable prostheses. These constructs would be continuously replaced by host tissue, leading to an endogenous functional implant which would adapt to the need of the patient and exhibit only limited risk of microbiological graft contamination. Adequate biomechanical strength and a wall structure which promotes rapid host remodeling are prerequisites for biodegradable approaches. Current approaches often reveal limited tensile strength and therefore require thicker or reinforced graft walls. In this study we investigated the in vitro and in vivo biocompatibility of thin host-vessel-matched grafts (n=34) formed from hard-block biodegradable thermoplastic polyurethane (TPU). Expanded polytetrafluoroethylene (ePTFE) conduits (n=34) served as control grafts. Grafts were analyzed by various techniques after retrieval at different time points (1 week; 1, 6, 12 months). TPU grafts showed significantly increased endothelial cell proliferation in vitro (P<0.001). Population by host cells increased significantly in the TPU conduits within 1 month of implantation (P=0.01). After long-term implantation, TPU implants showed 100% patency (ePTFE: 93%) with no signs of aneurysmal dilatation. Substantial remodeling of the degradable grafts was observed but varied between subjects. Intimal hyperplasia was limited to ePTFE conduits (29%). Thin-walled TPU grafts offer a new and desirable form of biodegradable vascular implant. Degradable grafts showed equivalent long-term performance characteristics compared to the clinically used, non-degradable material with improvements in intimal hyperplasia and ingrowth of host cells.
Collapse
Affiliation(s)
- Helga Bergmeister
- Division of Biomedical Research, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria.
| | - Nargiz Seyidova
- Division of Biomedical Research, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Catharina Schreiber
- Division of Biomedical Research, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Magdalena Strobl
- Division of Biomedical Research, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Christian Grasl
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Ingrid Walter
- Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Barbara Messner
- Surgical Research Laboratories - Cardiac Surgery, Department of Surgery, Medical University of Vienna, Austria
| | - Stefan Baudis
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Vienna, Austria
| | - Sophie Fröhlich
- Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna, Austria
| | | | - Markus Griesser
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Vienna, Austria
| | - Matt di Franco
- Computational Image Analysis and Radiology Lab, Department of Radiology, Medical University of Vienna, Austria
| | - Martin Krssak
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Vienna, Austria; Centre of Excellence, High Field MR, Department of Radiology, Medical University of Vienna, Austria
| | - Robert Liska
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Vienna, Austria
| | - Heinrich Schima
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| |
Collapse
|
69
|
Sundaram S, One J, Siewert J, Teodosescu S, Zhao L, Dimitrievska S, Qian H, Huang AH, Niklason L. Tissue-engineered vascular grafts created from human induced pluripotent stem cells. Stem Cells Transl Med 2014; 3:1535-43. [PMID: 25378654 PMCID: PMC4250208 DOI: 10.5966/sctm.2014-0065] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 09/12/2014] [Indexed: 12/21/2022] Open
Abstract
The utility of human induced pluripotent stem cells (hiPSCs) to create tissue-engineered vascular grafts was evaluated in this study. hiPSC lines were first induced into a mesenchymal lineage via a neural crest intermediate using a serum-free, chemically defined differentiation scheme. Derived cells exhibited commonly known mesenchymal markers (CD90, CD105, and CD73 and negative marker CD45) and were shown to differentiate into several mesenchymal lineages (osteogenic, chondrogenic, and adipogenic). Functional vascular grafts were then engineered by culturing hiPSC-derived mesenchymal progenitor cells in a pulsatile bioreactor system over 8 weeks to induce smooth muscle cell differentiation and collagenous matrix generation. Histological analyses confirmed layers of calponin-positive smooth muscle cells in a collagen-rich matrix. Mechanical tests revealed that grafts had an average burst pressure of 700 mmHg, which is approximately half that of native veins. Additionally, studies revealed that karyotypically normal mesenchymal stem cell clones led to generation of grafts with predicted features of engineered vascular grafts, whereas derived clones having chromosomal abnormalities generated calcified vessel constructs, possibly because of cell apoptosis during culture. Overall, these results provide significant insight into the utility of hiPS cells for vascular graft generation. They pave the way for creating personalized, patient-specific vascular grafts for surgical applications, as well as for creating experimental models of vascular development and disease.
Collapse
Affiliation(s)
- Sumati Sundaram
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Jennifer One
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Joshua Siewert
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Stephan Teodosescu
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Liping Zhao
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Sashka Dimitrievska
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Hong Qian
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Angela H Huang
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| | - Laura Niklason
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA; Department of Anesthesiology, Yale School of Medicine, New Haven, Connecticut, USA; Yale School of Medicine, New Haven, Connecticut, USA; Department of Biomedical Engineering, California Polytechnic State University, California, USA
| |
Collapse
|
70
|
G N, Tan A, Gundogan B, Farhatnia Y, Nayyer L, Mahdibeiraghdar S, Rajadas J, De Coppi P, Davies AH, Seifalian AM. Tissue engineering vascular grafts a fortiori: looking back and going forward. Expert Opin Biol Ther 2014; 15:231-44. [PMID: 25427995 DOI: 10.1517/14712598.2015.980234] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Cardiovascular diseases such as coronary heart disease often necessitate the surgical repair using conduits. Although autografts still remain the gold standard, the inconvenience of harvesting and/or insufficient availability in patients with atherosclerotic disease has given impetus to look into alternative sources for vascular grafts. AREAS COVERED There are four main techniques to produce tissue-engineered vascular grafts (TEVGs): i) biodegradable synthetic scaffolds; ii) gel-based scaffolds; iii) decellularised scaffolds and iv) self-assembled cell-sheet-based techniques. The first three techniques can be grouped together as scaffold-guided approach as it involves the use of a construct to function as a supportive framework for the vascular graft. The most significant advantages of TEVGs are that it possesses the ability to grow, remodel and respond to environmental factors. Cell sources for TEVGs include mature somatic cells, stem cells, adult progenitor cells and pluripotent stem cells. EXPERT OPINION TEVG holds great promise with advances in nanotechnology, coupled with important refinements in tissue engineering and decellularisation techniques. This will undoubtedly be an important milestone for cardiovascular medicine when it is eventually translated to clinical use.
Collapse
Affiliation(s)
- Natasha G
- University College London (UCL), Centre for Nanotechnology and Regenerative Medicine, UCL Division of Surgery and Interventional Science, Research Department of Nanotechnology , London NW3 2QG , UK +44 207 830 2901 ;
| | | | | | | | | | | | | | | | | | | |
Collapse
|
71
|
Abstract
Ultimately much work remains to be done in the companion fields of biomaterials and stem cells. Nonetheless, the monumental progress in TE that has been reported in the studies summarized here demonstrates that regenerative approaches to problems in general surgery need to be explored in more depth. Furthermore, the surgical disciplines of reconstruction and transplantation need to recognize their research counterparts in TE, given its potential to actualize freedom from immunosuppression, one of the most elusive goals in modern surgery. The engineering and proliferation of autologous cells, tissues, and organs ex vivo before surgical operation can significantly reduce the obstacles current practitioners are intimately familiar with: donor site morbidity and immunologic rejection. Therefore, in addition to the truly exciting research and development prospects and implications for the commercial sector, patients with end-stage diseases and debilitating injury stand to gain the most from clinically adapted TE therapies.
Collapse
|
72
|
Krawiec JT, Weinbaum JS, St Croix CM, Phillippi JA, Watkins SC, Rubin JP, Vorp DA. A cautionary tale for autologous vascular tissue engineering: impact of human demographics on the ability of adipose-derived mesenchymal stem cells to recruit and differentiate into smooth muscle cells. Tissue Eng Part A 2014; 21:426-37. [PMID: 25119584 DOI: 10.1089/ten.tea.2014.0208] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Autologous tissue-engineered blood vessels (TEBVs) generated using adult stem cells have shown promising results, but many preclinical evaluations do not test the efficacy of stem cells from patient populations likely to need therapy (i.e., elderly and diabetic humans). Two critical functions of these cells will be (i) secreting factors that induce the migration of host cells into the graft and (ii) differentiating into functional vascular cells themselves. The purpose of this study was to analyze whether adipose-derived mesenchymal stem cells (AD-MSCs) sourced from diabetic and elderly patients have a reduced ability to promote human smooth muscle cell (SMC) migration and differentiation potential toward SMCs, two important processes in stem cell-based tissue engineering of vascular grafts. SMC monolayers were disrupted in vitro by a scratch wound and were induced to close the wound by exposure to media conditioned by AD-MSCs from healthy, elderly, and diabetic patients. Media conditioned by AD-MSCs from healthy patients promoted the migration of SMCs and did so in a dose-dependent manner; heating the media to 56°C eliminated the media's potency. AD-MSCs from diabetic and elderly patients had a decreased ability to differentiate into SMCs under angiotensin II stimulation; however, only AD-MSCs from elderly donors were unable to promote SMC migration. Gender and body-mass index of the patients showed no effect on either critical function of AD-MSCs. In conclusion, AD-MSCs from elderly patients may not be suitable for autologous TEBVs due to inadequate promotion of SMC migration and differentiation.
Collapse
Affiliation(s)
- Jeffrey T Krawiec
- 1 Department of Bioengineering, University of Pittsburgh , Pittsburgh, Pennsylvania
| | | | | | | | | | | | | |
Collapse
|
73
|
Mancuso L, Gualerzi A, Boschetti F, Loy F, Cao G. Decellularized ovine arteries as small-diameter vascular grafts. Biomed Mater 2014; 9:045011. [DOI: 10.1088/1748-6041/9/4/045011] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
74
|
Bioengineered vascular scaffolds: the state of the art. Int J Artif Organs 2014; 37:503-12. [PMID: 25044387 DOI: 10.5301/ijao.5000343] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2014] [Indexed: 11/20/2022]
Abstract
To date, there is increasing clinical need for vascular substitutes due to accidents, malformations, and ischemic diseases. Over the years, many approaches have been developed to solve this problem, starting from autologous native vessels to artificial vascular grafts; unfortunately, none of these have provided the perfect vascular substitute. All have been burdened by various complications, including infection, thrombogenicity, calcification, foreign body reaction, lack of growth potential, late stenosis and occlusion from intimal hyperplasia, and pseudoaneurysm formation. In the last few years, vascular tissue engineering has emerged as one of the most promising approaches for producing mechanically competent vascular substitutes. Nanotechnologies have contributed their part, allowing extraordinarily biostable and biocompatible materials to be developed. Specifically, the use of electrospinning to manufacture conduits able to guarantee a stable flow of biological fluids and guide the formation of a new vessel has revolutionized the concept of the vascular substitute. The electrospinning technique allows extracellular matrix (ECM) to be mimicked with high fidelity, reproducing its porosity and complexity, and providing an environment suitable for cell growth. In the future, a better knowledge of ECM and the manufacture of new materials will allow us to "create" functional biological vessels - the base required to develop organ substitutes and eventually solve the problem of organ failure.
Collapse
|
75
|
Calle EA, Vesuna S, Dimitrievska S, Zhou K, Huang A, Zhao L, Niklason LE, Levene MJ. The use of optical clearing and multiphoton microscopy for investigation of three-dimensional tissue-engineered constructs. Tissue Eng Part C Methods 2014; 20:570-7. [PMID: 24251630 PMCID: PMC4074743 DOI: 10.1089/ten.tec.2013.0538] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/05/2013] [Indexed: 01/14/2023] Open
Abstract
Recent advances in three-dimensional (3D) tissue engineering have concomitantly generated a need for new methods to visualize and assess the tissue. In particular, methods for imaging intact volumes of whole tissue, rather than a single plane, are required. Herein, we describe the use of multiphoton microscopy, combined with optical clearing, to noninvasively probe decellularized lung extracellular matrix scaffolds and decellularized, tissue-engineered blood vessels. We also evaluate recellularized lung tissue scaffolds. In addition to nondestructive imaging of tissue volumes greater than 4 mm(3), the lung tissue can be visualized using three distinct signals, combined or singly, that allow for simple separation of cells and different components of the extracellular matrix. Because the 3D volumes are not reconstructions, they do not require registration algorithms to generate digital volumes, and maintenance of isotropic resolution is not required when acquiring stacks of images. Once a virtual volume of tissue is generated, structures that have innate 3D features, such as the lumens of vessels and airways, are easily animated and explored in all dimensions. In blood vessels, individual collagen fibers can be visualized at the micron scale and their alignment assessed at various depths through the tissue, potentially providing some nondestructive measure of vessel integrity and mechanics. Finally, both the lungs and vessels assayed here were optically cleared, imaged, and visualized in a matter of hours, such that the added benefits of these techniques can be achieved with little more hassle or processing time than that associated with traditional histological methods.
Collapse
Affiliation(s)
- Elizabeth A. Calle
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Sam Vesuna
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Sashka Dimitrievska
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Kevin Zhou
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Angela Huang
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Liping Zhao
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| | - Laura E. Niklason
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
- Department of Anesthesiology, Yale University, New Haven, Connecticut
| | - Michael J. Levene
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut
| |
Collapse
|
76
|
Woods I, Flanagan TC. Electrospinning of biomimetic scaffolds for tissue-engineered vascular grafts: threading the path. Expert Rev Cardiovasc Ther 2014; 12:815-32. [PMID: 24903895 DOI: 10.1586/14779072.2014.925397] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tissue-engineered vascular grafts (TEVGs) offer an alternative to synthetic grafts for the surgical treatment of atherosclerosis and congenital heart defects, and may improve graft patency and patient outcomes after implantation. Electrospinning is a versatile manufacturing process for the production of fibrous scaffolds. This review aims to investigate novel approaches undertaken to improve the design of electrospun scaffolds for TEVG development. The review describes how electrospinning can be adapted to produce aligned nanofibrous scaffolds used in vascular tissue engineering, while novel processes for improved performance of such scaffolds are examined and compared to evaluate their effectiveness and potential. By highlighting new drug delivery techniques and porogenic technologies, in addition to analyzing in vitro and in vivo testing of electrospun TEVGs, it is hoped that this review will provide guidance on how the next generation of electrospun vascular graft scaffolds will be designed and tested for the potential improvement of cardiovascular therapies.
Collapse
Affiliation(s)
- Ian Woods
- School of Medicine & Medical Science, Health Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland
| | | |
Collapse
|
77
|
Scherner M, Reutter S, Klemm D, Sterner-Kock A, Guschlbauer M, Richter T, Langebartels G, Madershahian N, Wahlers T, Wippermann J. In vivo application of tissue-engineered blood vessels of bacterial cellulose as small arterial substitutes: proof of concept? J Surg Res 2014; 189:340-7. [DOI: 10.1016/j.jss.2014.02.011] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 02/07/2014] [Accepted: 02/11/2014] [Indexed: 12/27/2022]
|
78
|
Suki B. Assessing the Functional Mechanical Properties of Bioengineered Organs With Emphasis on the Lung. J Cell Physiol 2014; 229:1134-40. [DOI: 10.1002/jcp.24600] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 03/03/2014] [Indexed: 01/16/2023]
Affiliation(s)
- Béla Suki
- Department of Biomedical Engineering; Boston University; Boston Massachusetts
| |
Collapse
|
79
|
Liu S, Dong C, Lu G, Lu Q, Li Z, Kaplan DL, Zhu H. Bilayered vascular grafts based on silk proteins. Acta Biomater 2013; 9:8991-9003. [PMID: 23851155 DOI: 10.1016/j.actbio.2013.06.045] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 06/13/2013] [Accepted: 06/26/2013] [Indexed: 11/16/2022]
Abstract
A major block in the development of small diameter vascular grafts is achieving suitable blood vessel regeneration while minimizing the risk of thrombosis, intimal hyperplasia, suture retention, and mechanical failure. Silk-based tubular vessels for tissue engineering have been prepared by molding, dipping, electrospinning, or gel spinning, however, further studies are needed to improve the mechanical and blood compatibility properties. In the present study a bilayered vascular graft based on silk fibroin (SF) was developed. The graft was composed of an inner silk fiber-reinforced SF tube containing heparin and a highly porous SF external layer. Compared with previously fabricated SF tubes the fiber-reinforcement provided a comparable or higher mechanical strength, burst pressure, and suture retention strength, as well as mechanical compliance, to saphenous veins for vascular grafts. Heparin release was sustained for at least 1 month, affording blood compatibility to the grafts. The outer layer of the grafts prepared through lyophilization had a highly porous structure in which the macropore walls were composed of nanofibers similar to extracellular matrix, which offered an excellent environment for cell growth. In vitro studies showed good cytocompatibility and hemocompatibility.
Collapse
Affiliation(s)
- Shanshan Liu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
80
|
Appel AA, Anastasio MA, Larson JC, Brey EM. Imaging challenges in biomaterials and tissue engineering. Biomaterials 2013; 34:6615-30. [PMID: 23768903 PMCID: PMC3799904 DOI: 10.1016/j.biomaterials.2013.05.033] [Citation(s) in RCA: 167] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 05/18/2013] [Indexed: 12/11/2022]
Abstract
Biomaterials are employed in the fields of tissue engineering and regenerative medicine (TERM) in order to enhance the regeneration or replacement of tissue function and/or structure. The unique environments resulting from the presence of biomaterials, cells, and tissues result in distinct challenges in regards to monitoring and assessing the results of these interventions. Imaging technologies for three-dimensional (3D) analysis have been identified as a strategic priority in TERM research. Traditionally, histological and immunohistochemical techniques have been used to evaluate engineered tissues. However, these methods do not allow for an accurate volume assessment, are invasive, and do not provide information on functional status. Imaging techniques are needed that enable non-destructive, longitudinal, quantitative, and three-dimensional analysis of TERM strategies. This review focuses on evaluating the application of available imaging modalities for assessment of biomaterials and tissue in TERM applications. Included is a discussion of limitations of these techniques and identification of areas for further development.
Collapse
Affiliation(s)
- Alyssa A. Appel
- Department of Biomedical Engineering, Illinois Institute of Technology, 3255 South Dearborn St, Chicago, IL 60616, USA
- Research Service, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Mark A. Anastasio
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Jeffery C. Larson
- Department of Biomedical Engineering, Illinois Institute of Technology, 3255 South Dearborn St, Chicago, IL 60616, USA
- Research Service, Hines Veterans Administration Hospital, Hines, IL, USA
| | - Eric M. Brey
- Department of Biomedical Engineering, Illinois Institute of Technology, 3255 South Dearborn St, Chicago, IL 60616, USA
- Research Service, Hines Veterans Administration Hospital, Hines, IL, USA
| |
Collapse
|
81
|
|
82
|
Lundberg MS. Cardiovascular tissue engineering research support at the National Heart, Lung, and Blood Institute. Circ Res 2013; 112:1097-103. [PMID: 23580772 DOI: 10.1161/circresaha.112.300638] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Tissue engineering aims at building 3-dimensional living substitutes that are equal to or better than the damaged tissue to be replaced. The development of such a tissue replacement requires a multidisciplinary approach and careful attention to the optimal cell source, the interactions of growth factors and extracellular milieu, and the scaffolding design. This article is a review of the tissue engineering programs of the National Heart, Lung, and Blood Institute, which support research efforts to translate novel approaches for the treatment of cardiovascular disease. Recent progress is discussed, which highlights some major questions relevant to cardiovascular tissue engineering. The National Heart, Lung, and Blood Institute has a strong interest in tissue engineering and will continue to foster the practical, clinical, and commercial development of research discoveries in this emerging field.
Collapse
Affiliation(s)
- Martha S Lundberg
- Division of Cardiovascular Sciences, National Heart, Lung and Blood Institute, Bethesda, MD 20982, USA.
| |
Collapse
|
83
|
Abstract
Vascular occlusion remains the leading cause of death in Western countries, despite advances made in balloon angioplasty and conventional surgical intervention. Vascular surgery, such as CABG surgery, arteriovenous shunts, and the treatment of congenital anomalies of the coronary artery and pulmonary tracts, requires biologically responsive vascular substitutes. Autografts, particularly saphenous vein and internal mammary artery, are the gold-standard grafts used to treat vascular occlusions. Prosthetic grafts have been developed as alternatives to autografts, but their low patency owing to short-term and intermediate-term thrombosis still limits their clinical application. Advances in vascular tissue engineering technology-such as self-assembling cell sheets, as well as scaffold-guided and decellularized-matrix approaches-promise to produce responsive, living conduits with properties similar to those of native tissue. Over the past decade, vascular tissue engineering has become one of the fastest-growing areas of research, and is now showing some success in the clinic.
Collapse
Affiliation(s)
- Dawit G Seifu
- Laboratory for Biomaterials and Bioengineering, Department of Min-Met-Materials Engineering and Quebec University Hospital Center, Laval University, Quebec City, QC G1V 0A6, Canada
| | | | | | | |
Collapse
|
84
|
Kang J, Lee BW, Kim JH, Yoo DG, Cho WC, Kim SW, Choo SJ. Granulocyte colony-stimulating factor minimizes negative remodeling of decellularized small diameter vascular graft conduits but not medial degeneration. Ann Vasc Surg 2013; 27:487-96. [PMID: 23540676 DOI: 10.1016/j.avsg.2012.07.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 06/26/2012] [Accepted: 07/09/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Poor endothelialization and intimal hyperplasia are major causes of small diameter vascular conduit (SDVC) failure. The present study was aimed to investigate the influence of granulocyte colony-stimulating factor (G-CSF) on inhibiting adverse remodeling of decellularized SDVCs. METHODS Sprague-Dawley rats implanted with allograft infra renal abdominal aortic conduits were divided into 2 groups according to whether they were treated with G-CSF (+G-CSF group; n=6) or without (Decell group; n=6). The conduits were harvested at 8 weeks after surgery and examined for intimal hyperplasia, collagen deposition, and -actin-staining cells. The medial layer was also examined for signs of cellular repopulation and changes in the elastic fiber morphology. RESULTS Intergroup comparison of the intimal composition showed relatively sparse collagen content and predominance of -actin-staining cells in the +G-CSF group. The medial layer in the 2 groups showed similar degrees of elastic fiber degeneration and wall thinning relative to the normal aortic wall. However, the enhanced staining for von Willebrand factor and CD31, along with transmission electron microscopy findings of superior cellular and ultrastructural preservation, suggested that the remodeling and endothelialization in the +G-CSF conduits were superior to those in the Decell conduits. CONCLUSIONS This study suggests that G-CSF exerts a positive influence on inhibiting adverse vascular remodeling of decellularized vascular conduit implants. However, whether G-CSF administration may also effectuate an improved ability to preserve the medial structural integrity is unclear.
Collapse
Affiliation(s)
- Joonkyu Kang
- Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine, Asan Medical Center, and Department of Thoracic and Cardiovascular Surgery, Seoul St. Mary's Hospital, Seoul, Korea
| | | | | | | | | | | | | |
Collapse
|
85
|
Applications of Biomaterials in Functional Tissue Engineering. Biomater Sci 2013. [DOI: 10.1016/b978-0-08-087780-8.00108-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|