1
|
Zhao F, Yang T, Zhou L, Zhao J, Liu J, Ping W, Zhou C, Qin Z, Jia R. Construction of tissue-engineered bladders using an artificial acellular nanocomposite scaffold loaded with stromal vascular fraction secretome. Acta Biomater 2023:S1742-7061(23)00304-5. [PMID: 37390857 DOI: 10.1016/j.actbio.2023.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 07/02/2023]
Abstract
Tissue engineering approaches offer promising alternative strategies for reconstructing bladder tissue; however, the low retention of transplanted cells and the possible risk of rejection limit their therapeutic efficacy. Clinical applicability is further limited by the lack of suitable scaffold materials to support the needs of various cell types. In the present study, we developed an artificial nanoscaffold system consisting of stromal vascular fraction (SVF) secretome (Sec) loaded onto zeolitic imidazolate framework-8 (ZIF-8) nanoparticles, which were then incorporated into bladder acellular matrix. This artificial acellular nanocomposite scaffold (ANS) can achieve gradient degradation and slowly release SVF-Sec to promote tissue regeneration. Furthermore, even after long-term cryopreservation, this completely acellular bladder nanoscaffold material still maintains its efficacy. In a rat bladder replacement model, ANS transplantation demonstrated potent proangiogenic ability and induced M2 macrophage polarization to promote tissue regeneration and restore bladder function. Our study demonstrates the safety and efficacy of the ANS, which can play a stem cell-like role while avoiding the disadvantages of cell therapy. Furthermore, the ANS can replace the bladder regeneration model based on cell-binding scaffold materials and has the potential for clinical application. STATEMENT OF SIGNIFICANCE: This study aimed to develop a gradient-degradable artificial acellular nanocomposite scaffold (ANS) loaded with stromal vascular fraction (SVF) secretome for rehabilitating bladders. Using various in vitro methods as well as rat- and zebrafish-based in vivo models, the developed ANS was assessed for efficacy and safety. Results indicated that the ANS achieved gradient degradation and slowly released the SVF secretome to promote tissue regeneration, even after long-term cryopreservation. Furthermore, ANS transplantation demonstrated a potent pro-angiogenic ability and induced M2 macrophage polarization to promote tissue regeneration and restore bladder function in a bladder replacement model. Our study demonstrates that ANS may replace bladder regeneration models based on cell-binding scaffold materials and have potential clinical application.
Collapse
Affiliation(s)
- Feng Zhao
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Tianli Yang
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Liuhua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Jun Zhao
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Jingyu Liu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Wenwen Ping
- Department of Rheumatology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Changcheng Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Zhiqiang Qin
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China.
| |
Collapse
|
2
|
Yang H, He C, Bi Y, Zhu X, Deng D, Ran T, Ji X. Synergistic effect of VEGF and SDF-1α in endothelial progenitor cells and vascular smooth muscle cells. Front Pharmacol 2022; 13:914347. [PMID: 35910392 PMCID: PMC9335858 DOI: 10.3389/fphar.2022.914347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is a potent agonist of angiogenesis that induces proliferation and differentiation of endothelial progenitor cells (EPCs) after vascular injury. Previous studies have suggested that stromal cell-derived factor 1-alpha (SDF-1α) and VEGF have a synergistic effect on vascular stenosis. The aim of the present study was to investigate whether VEGF and SDF-1α act synergistically in EPCs and vascular smooth muscle cells (VSMCs). In this study, EPCs were isolated from rat bone marrow and their morphology and function were studied. Subsequently, VEGF was delivered into EPCs using an adenoviral vector. Tube formation, migration, proliferation, and apoptosis of VEGF-overexpressing EPCs was analyzed. Then, EPCs were co-cultured with VSMCs in the presence or absence of SDF-1α, the migration, proliferation, apoptosis, and differentiation capacity of EPCs and VSMCs were analyzed respectively. The isolated EPCs showed typical morphological features, phagocytic capacity, and expressed surface proteins. While stable expression of VEGF remarkably enhanced tube formation, migration, and proliferation capacity of EPCs, apoptosis was decreased. Moreover, the proliferation, migration, and differentiation capacity of EPCs in the co-cultured model was enhanced in the presence of SDF-1α, and apoptosis was decreased. However, these effects were reversed in VSMCs. Therefore, our results showed that VEGF and SDF-1α synergistically increased the migration, differentiation, and proliferation capabilities of EPCs, but not VSMCs. This study suggests a promising strategy to prevent vascular stenosis.
Collapse
Affiliation(s)
- Haiyan Yang
- Department of Ultrasound, Chongqing General Hospital, Chongqing, China
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Cancan He
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, Guizhou Children’s Hospital, Zunyi, GZ, China
| | - Yang Bi
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xu Zhu
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Dan Deng
- School of Medical Imaging, Changsha Medical University, Changsha, China
| | - Tingting Ran
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaojuan Ji
- Department of Ultrasound, Chongqing General Hospital, Chongqing, China
- *Correspondence: Xiaojuan Ji,
| |
Collapse
|
3
|
Xiao S, Wang P, Zhao J, Ling Z, An Z, Fu Z, Fu W, Zhang X. Bi-layer silk fibroin skeleton and bladder acellular matrix hydrogel encapsulating adipose-derived stem cells for bladder reconstruction. Biomater Sci 2021; 9:6169-6182. [PMID: 34346416 DOI: 10.1039/d1bm00761k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A scaffold, constructed from a bi-layer silk fibroin skeleton (BSFS) and a bladder acellular matrix hydrogel (BAMH) encapsulated with adipose-derived stem cells (ASCs), was developed for bladder augmentation in a rat model. The BSFS, prepared from silk fibroin (SF), had good mechanical properties that allowed it to maintain the scaffold shape and be used for stitching. The prepared BAM was digested by pepsin and the pH was adjusted to harvest the BAMH that provided an extracellular environment for the ASCs. The constructed BSFS-BAMH-ASCs and BSFS-BAMH scaffolds were wrapped in the omentum to promote neovascularization and then used for bladder augmentation; at the same time, a cystotomy was used as the condition for the control group. Histological staining and immunohistochemical analysis confirmed that the omentum incubation could promote scaffold vascularization. Hematoxylin and eosin and Masson's trichrome staining indicated that the BSFS-BAMH-ASCs scaffold regenerated the bladder wall structure. In addition, immunofluorescence analyses confirmed that the ASCs could promote the regeneration of smooth muscle, neurons and blood vessels and the restoration of physiological function. These results demonstrated that the BSFS-BAMH-ASCs may be a promising scaffold for promoting bladder wall regeneration and the restoration of physiological function of the bladder in a rat bladder augmentation model.
Collapse
Affiliation(s)
- Shuwei Xiao
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China. and Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Pengchao Wang
- Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China and Department of Urology, Hainan Hospital of PLA General Hospital, Hai tang Bay, Sanya City, Hainan Province 572013, China
| | - Jian Zhao
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China. and Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Zhengyun Ling
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China. and Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Ziyan An
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China. and Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Zhouyang Fu
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China. and Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Weijun Fu
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
| | - Xu Zhang
- Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
| |
Collapse
|
4
|
Ai J, Ma J, Chen ZQ, Sun JH, Yao K. An Endostatin-lentivirus (ES-LV)-EPC gene therapy agent for suppression of neovascularization in oxygen-induced retinopathy rat model. BMC Mol Cell Biol 2020; 21:57. [PMID: 32727534 PMCID: PMC7392664 DOI: 10.1186/s12860-020-00301-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 07/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Transplantation of gene transfected endothelial progenitor cells (EPCs) has provided novel methods for tumor neovascularization therapy but not for ocular disease therapy. This study aimed to investigate the efficacy of endostatin transfected EPCs in retinal neovascularization therapy. RESULTS Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) showed the high expression of endostatin in endostatin-lentivirus-EPCs. The neovascularization leakage area and the number of preretinal neovascular cell nuclei were significantly decreased in the endostatin-lentivirus and endostatin-lentivirus-EPC groups, and the effects of these two treatments on inhibiting retinal neovascularization were almost the same. These two groups also showed the greater retinal distribution of endostatin. Intravitreal injections of endostatin-lentivirus-EPCs inhibited retinal neovascularization, vascular endothelial growth factor (VEGF) and CD31 expression, and increased endostatin expression in vivo. Endostatin-lentivirus-EPCs targeted and prevented pathologic retinal neovascularization. CONCLUSIONS Gene-combined EPCs represent a potential new therapeutic agent for the treatment of neovascular eye diseases.
Collapse
Affiliation(s)
- Jing Ai
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Jian Ma
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Zhi-Qing Chen
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Jun-Hui Sun
- Hepatobiliary and Pancreatic Interventional Treatment Center, Division of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang Province, China.
| | - Ke Yao
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
| |
Collapse
|
5
|
Zhao F, Zhou L, Xu Z, Xu L, Xu Z, Ping W, Liu J, Zhou C, Wang M, Jia R. Hypoxia-Preconditioned Adipose-Derived Endothelial Progenitor Cells Promote Bladder Augmentation. Tissue Eng Part A 2020; 26:78-92. [PMID: 31238789 DOI: 10.1089/ten.tea.2019.0045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Feng Zhao
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Liuhua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhongle Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Luwei Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zheng Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Wenwen Ping
- Department of Rheumatology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Jingyu Liu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Changcheng Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Min Wang
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| |
Collapse
|
6
|
Zhao F, Zhou L, Liu J, Xu Z, Ping W, Li H, Xu L, Xu Z, Zhou C, Wang M, Jia R. Construction of a vascularized bladder with autologous adipose-derived stromal vascular fraction cells combined with bladder acellular matrix via tissue engineering. J Tissue Eng 2019; 10:2041731419891256. [PMID: 31827758 PMCID: PMC6886281 DOI: 10.1177/2041731419891256] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/06/2019] [Indexed: 11/17/2022] Open
Abstract
The formation of an effective vascular network can promote peripheral angiogenesis, ensuring an effective supply of blood, oxygen, and nutrients to an engineered bladder, which is important for bladder tissue engineering. Stromal vascular fraction cells (SVFs) promote vascularization and improve the function of injured tissues. In this study, adipose tissue-derived SVFs were introduced as an angiogenic cell source and seeded into the bladder acellular matrix (BAM) to generate a SVF-BAM complex for bladder reconstruction. The morphological regeneration and functional restoration of the engineered bladder were evaluated. In addition, we also explored the role of the Wnt5a/sFlt-1 noncanonical Wnt signaling pathway in regulating the angiogenesis of SVFs, and in maintaining the rational capability of SVFs to differentiate into vasculature in regenerated tissues. Histological assessment indicated that the SVF-BAM complex was more effective in promoting smooth muscle, vascular, and nerve regeneration than BAM alone and subsequently led to the restoration of bladder volume and bladder compliance. Moreover, exogenous Wnt5a was able to enhance angiogenesis by increasing the activity of MMP2, MMP9, and VEGFR2. Simultaneously, the expression of sFlt-1 was also increased, which enhanced the stability of the SVFs angiogenic capability. SVFs may be a potential cell source for tissue-engineered bladders. The Wnt5a/sFlt-1 pathway is involved in the regulation of autologous vascular formation by SVFs. The rational regulation of this pathway can promote neo-microvascularization in tissue-engineered bladders.
Collapse
Affiliation(s)
- Feng Zhao
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Liuhua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jingyu Liu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhongle Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Department of Urology, Hefei Hospital Affiliated to Anhui Medical University (The Second People's Hospital of Hefei), Hefei, China
| | - Wenwen Ping
- Department of Rheumatology, Zhongda Hospital, Medical School of Southeast University, Nanjing, China
| | - Haiyang Li
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Luwei Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zheng Xu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Changcheng Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Min Wang
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| |
Collapse
|
7
|
Shear stress: An essential driver of endothelial progenitor cells. J Mol Cell Cardiol 2018; 118:46-69. [PMID: 29549046 DOI: 10.1016/j.yjmcc.2018.03.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/08/2018] [Accepted: 03/09/2018] [Indexed: 02/06/2023]
Abstract
The blood flow through vessels produces a tangential, or shear, stress sensed by their innermost layer (i.e., endothelium) and representing a major hemodynamic force. In humans, endothelial repair and blood vessel formation are mainly performed by circulating endothelial progenitor cells (EPCs) characterized by a considerable expression of vascular endothelial growth factor receptor 2 (VEGFR2), CD34, and CD133, pronounced tube formation activity in vitro, and strong reendothelialization or neovascularization capacity in vivo. EPCs have been proposed as a promising agent to induce reendothelialization of injured arteries, neovascularization of ischemic tissues, and endothelialization or vascularization of bioartificial constructs. A number of preconditioning approaches have been suggested to improve the regenerative potential of EPCs, including the use of biophysical stimuli such as shear stress. However, in spite of well-defined influence of shear stress on mature endothelial cells (ECs), articles summarizing how it affects EPCs are lacking. Here we discuss the impact of shear stress on homing, paracrine effects, and differentiation of EPCs. Unidirectional laminar shear stress significantly promotes homing of circulating EPCs to endothelial injury sites, induces anti-thrombotic and anti-atherosclerotic phenotype of EPCs, increases their capability to form capillary-like tubes in vitro, and enhances differentiation of EPCs into mature ECs in a dose-dependent manner. These effects are mediated by VEGFR2, Tie2, Notch, and β1/3 integrin signaling and can be abrogated by means of complementary siRNA/shRNA or selective pharmacological inhibitors of the respective proteins. Although the testing of sheared EPCs for vascular tissue engineering or regenerative medicine applications is still an unaccomplished task, favorable effects of unidirectional laminar shear stress on EPCs suggest its usefulness for their preconditioning.
Collapse
|
8
|
Smolar J, Horst M, Sulser T, Eberli D. Bladder regeneration through stem cell therapy. Expert Opin Biol Ther 2018; 18:525-544. [DOI: 10.1080/14712598.2018.1439013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jakub Smolar
- Department of Urology, University Hospital Zurich, Schlieren, Switzerland
| | - Maya Horst
- Department of Urology, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Tulio Sulser
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| | - Daniel Eberli
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| |
Collapse
|
9
|
The utility of stem cells in pediatric urinary bladder regeneration. Pediatr Res 2018; 83:258-266. [PMID: 28915233 DOI: 10.1038/pr.2017.229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/07/2017] [Indexed: 02/06/2023]
Abstract
Pediatric patients with a neurogenic urinary bladder, caused by developmental abnormalities including spina bifida, exhibit chronic urological problems. Surgical management in the form of enterocystoplasty is used to enlarge the bladder, but is associated with significant clinical complications. Thus, alternative methods to enterocystoplasty have been explored through the incorporation of stem cells with tissue engineering strategies. Within the context of this review, we will examine the use of bone marrow stem cells and induced pluripotent stem cells (iPSCs), as they relate to bladder regeneration at the anatomic and molecular levels. The use of bone marrow stem cells has demonstrated significant advances in bladder tissue regeneration as multiple aspects of bladder tissue have been recapitulated including the urothelium, bladder smooth muscle, vasculature, and peripheral nerves. iPSCs, on the other hand, have been well characterized and used in multiple tissue-regenerative settings, yet iPSC research is still in its infancy with regards to bladder tissue regeneration with recent studies describing the differentiation of iPSCs to the bladder urothelium. Finally, we examine the role of the Sonic Hedgehog signaling cascade that mediates the proliferative response during regeneration between bladder smooth muscle and urothelium. Taken together, this review provides a current, comprehensive perspective on bladder regeneration.
Collapse
|
10
|
Lee JS, Choi YS, Cho SW. Decellularized Tissue Matrix for Stem Cell and Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1064:161-180. [DOI: 10.1007/978-981-13-0445-3_10] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
11
|
Zou Q, Fu Q. Tissue engineering for urinary tract reconstruction and repair: Progress and prospect in China. Asian J Urol 2017; 5:57-68. [PMID: 29736367 PMCID: PMC5934513 DOI: 10.1016/j.ajur.2017.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 03/10/2017] [Accepted: 04/25/2017] [Indexed: 12/11/2022] Open
Abstract
Several urinary tract pathologic conditions, such as strictures, cancer, and obliterations, require reconstructive plastic surgery. Reconstruction of the urinary tract is an intractable task for urologists due to insufficient autologous tissue. Limitations of autologous tissue application prompted urologists to investigate ideal substitutes. Tissue engineering is a new direction in these cases. Advances in tissue engineering over the last 2 decades may offer alternative approaches for the urinary tract reconstruction. The main components of tissue engineering include biomaterials and cells. Biomaterials can be used with or without cultured cells. This paper focuses on cell sources, biomaterials, and existing methods of tissue engineering for urinary tract reconstruction in China. The paper also details challenges and perspectives involved in urinary tract reconstruction.
Collapse
Affiliation(s)
- Qingsong Zou
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qiang Fu
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
12
|
Chan YY, Sandlin SK, Kurzrock EA, Osborn SL. The Current Use of Stem Cells in Bladder Tissue Regeneration and Bioengineering. Biomedicines 2017; 5:biomedicines5010004. [PMID: 28536347 PMCID: PMC5423492 DOI: 10.3390/biomedicines5010004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/23/2016] [Accepted: 12/26/2016] [Indexed: 12/17/2022] Open
Abstract
Many pathological processes including neurogenic bladder and malignancy necessitate bladder reconstruction, which is currently performed using intestinal tissue. The use of intestinal tissue, however, subjects patients to metabolic abnormalities, bladder stones, and other long-term sequelae, raising the need for a source of safe and reliable bladder tissue. Advancements in stem cell biology have catapulted stem cells to the center of many current tissue regeneration and bioengineering strategies. This review presents the recent advancements in the use of stem cells in bladder tissue bioengineering.
Collapse
Affiliation(s)
- Yvonne Y Chan
- Department of Urology, Davis School of Medicine, University of California, Sacramento, CA 95817, USA.
| | - Samantha K Sandlin
- Department of Urology, Davis School of Medicine, University of California, Sacramento, CA 95817, USA.
- Stem Cell Program, Institute for Regenerative Cures, University of California, Davis Medical Center, Sacramento, CA 95817, USA.
| | - Eric A Kurzrock
- Department of Urology, Davis School of Medicine, University of California, Sacramento, CA 95817, USA.
- Stem Cell Program, Institute for Regenerative Cures, University of California, Davis Medical Center, Sacramento, CA 95817, USA.
| | - Stephanie L Osborn
- Department of Urology, Davis School of Medicine, University of California, Sacramento, CA 95817, USA.
- Stem Cell Program, Institute for Regenerative Cures, University of California, Davis Medical Center, Sacramento, CA 95817, USA.
| |
Collapse
|
13
|
Pokrywczynska M, Balcerczyk D, Jundzill A, Gagat M, Czapiewska M, Kloskowski T, Nowacki M, Gastecka AM, Bodnar M, Grzanka A, Marszalek A, Drewa T. Isolation, expansion and characterization of porcine urinary bladder smooth muscle cells for tissue engineering. Biol Proced Online 2016; 18:17. [PMID: 27524942 PMCID: PMC4982216 DOI: 10.1186/s12575-016-0047-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 08/03/2016] [Indexed: 01/20/2023] Open
Abstract
Background A key requirements for therapy utilizing the tissue engineering methodologies is use of techniques which have the capability to yield a high number of cells, from small tissue biopsy in a relatively short time. Up to date there was no optimal methods of isolation and expansion of urinary bladder smooth muscle cells (UB-SMCs). The aim of this study was to compare isolation and expansion techniques of UB-SMCs to select the most repeatable and efficient one. Method Five protocols of porcine UB- SMCs isolation including enzymatic and explant techniques and three expansion techniques were compared. Isolation effectiveness was evaluated using trypan blue assay. Cell phenotype was confirmed by immunofluorescence staining. Proliferation rate was analyzed using MTT and X- Celligence system. Cellular senescence was assessed measuring β-galactosidase activity. Results Enzymatic methods using collagenase with dispase (method I) or collagenase only (method III) allowed to isolate much larger number of cells than the methods using trypsin with collagenase (method II) and collagenase after digestion with trypsin (method IV). The success rate of establishment of primary culture was the highest when the isolated cells were cultured in the Smooth muscle Growth Medium-2 (SmGM-2). Expression of the smooth muscle markers- alpha smooth muscle actin and smoothelin was the highest for cells isolated by enzymatic method I and cultured in SmGM-2. There was no significant signs of cell senescence until the 8th passage. Conclusion The most efficient method of establishment of porcine UB-SMCs culture is enzymatic digestion of urinary bladder tissue with collagenase and dispase and culture of isolated cells in SmGM-2. This method was up to 10 times more efficient than other methods used for isolation and culture of UB-SMCs. This is an easy and consistent method for obtaining high numbers of urinary bladder smooth muscle cells.
Collapse
Affiliation(s)
- Marta Pokrywczynska
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Daria Balcerczyk
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Arkadiusz Jundzill
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Maciej Gagat
- Chair of Histology and Embryology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College, Bydgoszcz, Poland
| | - Monika Czapiewska
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Tomasz Kloskowski
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Maciej Nowacki
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland ; Chair of Surgical Oncology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College, Bydgoszcz, Poland
| | - Agata M Gastecka
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland
| | - Magdalena Bodnar
- Department of Clinical Pathomorphology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College, Bydgoszcz, Poland
| | - Alina Grzanka
- Chair of Histology and Embryology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College, Bydgoszcz, Poland
| | - Andrzej Marszalek
- Department of Clinical Pathomorphology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College, Bydgoszcz, Poland ; Department of Pathology, Poznan University of Medical Sciences, Poznan, Poland
| | - Tomasz Drewa
- Department of Regenerative Medicine, Nicolaus Copernicus University in Torun, Ludwik Rydygier Medical College in Bydgoszcz, Chair of Urology, Karlowicza 24 Street, 85-092 Bydgoszcz, Poland ; Department of Urology, Nicolaus Copernicus Hospital, Torun, Poland
| |
Collapse
|
14
|
Mauney JR, Adam RM. Dynamic reciprocity in cell-scaffold interactions. Adv Drug Deliv Rev 2015; 82-83:77-85. [PMID: 25453262 DOI: 10.1016/j.addr.2014.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/07/2014] [Accepted: 10/15/2014] [Indexed: 12/14/2022]
Abstract
Tissue engineering in urology has shown considerable promise. However, there is still much to understand, particularly regarding the interactions between scaffolds and their host environment, how these interactions regulate regeneration and how they may be enhanced for optimal tissue repair. In this review, we discuss the concept of dynamic reciprocity as applied to tissue engineering, i.e. how bi-directional signaling between implanted scaffolds and host tissues such as the bladder drives the process of constructive remodeling to ensure successful graft integration and tissue repair. The impact of scaffold content and configuration, the contribution of endogenous and exogenous bioactive factors, the influence of the host immune response and the functional interaction with mechanical stimulation are all considered. In addition, the temporal relationships of host tissue ingrowth, bioactive factor mobilization, scaffold degradation and immune cell infiltration, as well as the reciprocal signaling between discrete cell types and scaffolds are discussed. Improved understanding of these aspects of tissue repair will identify opportunities for optimization of repair that could be exploited to enhance regenerative medicine strategies for urology in future studies.
Collapse
|
15
|
Li L, Zhang D, Li P, Damaser M, Zhang Y. Virus integration and genome influence in approaches to stem cell based therapy for andro-urology. Adv Drug Deliv Rev 2015; 82-83:12-21. [PMID: 25453258 DOI: 10.1016/j.addr.2014.10.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/22/2014] [Accepted: 10/07/2014] [Indexed: 12/21/2022]
Abstract
Despite the potential of stem cells in cell-based therapy, major limitations such as cell retention, ingrowth, and trans-differentiation after implantation remain. One technique for genetic modification of cells for tissue repair is the introduction of specific genes using molecular biology techniques, such as virus integration, to provide a gene that adds new functions to enhance cellular function, and to secrete trophic factors for recruiting resident cells to participate in tissue repair. Stem cells can be labeled to track cell survival, migration, and lineage. Increasing evidence demonstrates that cell therapy and gene therapy in combination remarkably improve differentiation of implanted mesenchymal stromal cells (MSCs), revascularization, and innervation in genitourinary tissues, especially to treat urinary incontinence, erectile dysfunction, lower urinary tract reconstruction, and renal failure. This review discusses the benefits, safety, side effects, and alternatives for using genetically modified MSCs in tissue regeneration in andro-urology.
Collapse
|
16
|
Lam Van Ba O, Aharony S, Loutochin O, Corcos J. Bladder tissue engineering: a literature review. Adv Drug Deliv Rev 2015; 82-83:31-7. [PMID: 25446136 DOI: 10.1016/j.addr.2014.11.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 10/12/2014] [Accepted: 11/08/2014] [Indexed: 12/30/2022]
Abstract
PURPOSE OF REVIEW In bladder cancer and neuro-bladder, reconstruction of the bladder requires bowel segment grafting for augmentation cystoplasty or neo-bladder creation. However, even if currently considered as the gold standard, it is associated with potentially severe short- and long-term adverse effects. Thus, bladder tissue engineering is a promising approach to bladder reconstruction. RECENT FINDINGS In the last few years, progress has been made with the development of new biomaterials for bladder tissue replacement and in deciphering the role of stem cells as well as their contribution to bladder scaffold integration and tissue regeneration. SUMMARY This review of recently published articles allows us to forecast the characteristics of efficient and safe bladder biomaterials. However, several factors, such as native bladder traits, the specific involvement of urine, and bladder tissue replacement indications, have to be assessed with caution before including bladder tissue engineering in clinical trials. Many authors agree that these challenging techniques could deliver significant benefits with clinical application, reducing morbidity and global long-term costs.
Collapse
Affiliation(s)
- Ornella Lam Van Ba
- Department of Urology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Shachar Aharony
- Department of Urology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Oleg Loutochin
- Department of Urology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Jacques Corcos
- Department of Urology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada.
| |
Collapse
|
17
|
Lin HK, Madihally SV, Palmer B, Frimberger D, Fung KM, Kropp BP. Biomatrices for bladder reconstruction. Adv Drug Deliv Rev 2015; 82-83:47-63. [PMID: 25477305 DOI: 10.1016/j.addr.2014.11.020] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 11/17/2014] [Accepted: 11/24/2014] [Indexed: 12/22/2022]
Abstract
There is a demand for tissue engineering of the bladder needed by patients who experience a neurogenic bladder or idiopathic detrusor overactivity. To avoid complications from augmentation cystoplasty, the field of tissue engineering seeks optimal scaffolds for bladder reconstruction. Naturally derived biomaterials as well as synthetic and natural polymers have been explored as bladder substitutes. To improve regenerative properties, these biomaterials have been conjugated with functional molecules, combined with nanotechology, or seeded with exogenous cells. Although most studies reported complete and functional bladder regeneration in small-animal models, results from large-animal models and human clinical trials varied. For functional bladder regeneration, procedures for biomaterial fabrication, incorporation of biologically active agents, introduction of nanotechnology, and application of stem-cell technology need to be standardized. Advanced molecular and medical technologies such as next generation sequencing and magnetic resonance imaging can be introduced for mechanistic understanding and non-invasive monitoring of regeneration processes, respectively.
Collapse
Affiliation(s)
- Hsueh-Kung Lin
- Department of Urology, The Children's Hospital of Oklahoma, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Sundar V Madihally
- Department of Chemical Engineering, 423 Engineering North, Oklahoma State University, Stillwater, OK 74078, USA
| | - Blake Palmer
- Department of Urology, The Children's Hospital of Oklahoma, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Dominic Frimberger
- Department of Urology, The Children's Hospital of Oklahoma, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Kar-Ming Fung
- Department of Urology, The Children's Hospital of Oklahoma, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Bradley P Kropp
- Department of Urology, The Children's Hospital of Oklahoma, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| |
Collapse
|
18
|
Zhou L, Xia J, Qiu X, Wang P, Jia R, Chen Y, Yang B, Dai Y. In vitro evaluation of endothelial progenitor cells from adipose tissue as potential angiogenic cell sources for bladder angiogenesis. PLoS One 2015; 10:e0117644. [PMID: 25706311 PMCID: PMC4338275 DOI: 10.1371/journal.pone.0117644] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 12/29/2014] [Indexed: 01/22/2023] Open
Abstract
Autologous endothelial progenitor cells (EPCs) might be alternative angiogenic cell sources for vascularization of tissue-engineered bladder, while isolation and culture of EPCs from peripheral blood in adult are usually time-consuming and highly inefficient. Recent evidence has shown that EPCs also exist in the adipose tissue. As adipose tissue is plentiful in the human body and can be easily harvested through a minimally invasive method, the aim of this study was to culture and characterize EPCs from adipose tissue (ADEPCs) and investigate their potential for the neovascularization of tissue-engineered bladder. Adipose stromal vascular fraction (SVF) was isolated and used for the culture of ADEPCs and adipose derived stem cells (ADSCs). After SVF was cultured for one week, ADEPCs with typical cobblestone morphology emerged and could be isolated from ADSCs according to their different responses to trypsinization. Rat bladder smooth muscle cells (RBSMCs) were isolated and cultured from rat bladder. RBSMCs exhibited typical spindle-shaped morphology. ADEPCs had higher proliferative potential than ADSCs and RBSMCs. ADEPCs stained positive for CD34, Stro-1, VEGFR-2, eNOS and CD31 but negative for α-SMA, CD14 and CD45. ADSCs stained positive for CD34, Stro-1 and α-SMA but negative for VEGFR-2, eNOS, CD31, CD14 and CD45. RBSMCs stained only positive for α-SMA. ADEPCs could be expanded from a single cell at an early passage to a cell cluster containing more than 10,000 cells. ADEPCs were able to uptake DiI-Ac-LDL, bind UEA-1 and form capillary-like structures in three-dimensional scaffolds (Matrigel and bladder acellular matrix). ADEPCs were also able to enhance the human umbilical vein endothelial cells’ capability of capillary-like tube formation on Matrigel. Additionally, significantly higher levels of mRNA and protein of vascular endothelial growth factor were found in ADEPCs than in RBSMCs. These results suggest the potential use of ADEPCs as angiogenic cell sources for engineering bladder tissue.
Collapse
Affiliation(s)
- Liuhua Zhou
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiadong Xia
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xuefeng Qiu
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
| | - Pengji Wang
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yun Chen
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
| | - Bin Yang
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
- Department of Urology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
- * E-mail: (BY); (YTD)
| | - Yutian Dai
- Department of Urology and Andrology, Affiliated Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
- * E-mail: (BY); (YTD)
| |
Collapse
|
19
|
Application of bladder acellular matrix in urinary bladder regeneration: the state of the art and future directions. BIOMED RESEARCH INTERNATIONAL 2015; 2015:613439. [PMID: 25793199 PMCID: PMC4352424 DOI: 10.1155/2015/613439] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 11/15/2014] [Accepted: 11/18/2014] [Indexed: 12/14/2022]
Abstract
Construction of the urinary bladder de novo using tissue engineering technologies is the “holy grail” of reconstructive urology. The search for the ideal biomaterial for urinary bladder reconstruction has been ongoing for decades. One of the most promising biomaterials for this purpose seems to be bladder acellular matrix (BAM). In this review we determine the most important factors, which may affect biological and physical properties of BAM and its regeneration potential in tissue engineered urinary bladder. We also point out the directions in modification of BAM, which include incorporation of exogenous growth factors into the BAM structure. Finally, we discuss the results of the urinary bladder regeneration with cell seeded BAM.
Collapse
|
20
|
Allen AB, Priddy LB, Li MTA, Guldberg RE. Functional augmentation of naturally-derived materials for tissue regeneration. Ann Biomed Eng 2014; 43:555-67. [PMID: 25422160 DOI: 10.1007/s10439-014-1192-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 11/13/2014] [Indexed: 12/12/2022]
Abstract
Tissue engineering strategies have utilized a wide spectrum of synthetic and naturally-derived scaffold materials. Synthetic scaffolds are better defined and offer the ability to precisely and reproducibly control their properties, while naturally-derived scaffolds typically have inherent biological and structural properties that may facilitate tissue growth and remodeling. More recently, efforts to design optimized biomaterial scaffolds have blurred the line between these two approaches. Naturally-derived scaffolds can be engineered through the manipulation of intrinsic properties of the pre-existing backbone (e.g., structural properties), as well as the addition of controllable functional components (e.g., biological properties). Chemical and physical processing techniques used to modify structural properties of synthetic scaffolds have been tailored and applied to naturally-derived materials. Such strategies include manipulation of mechanical properties, degradation, and porosity. Furthermore, biofunctional augmentation of natural scaffolds via incorporation of exogenous cells, proteins, peptides, or genes has been shown to enhance functional regeneration over endogenous response to the material itself. Moving forward, the regenerative mode of action of naturally-derived materials requires additional investigation. Elucidating such mechanisms will allow for the determination of critical design parameters to further enhance efficacy and capitalize on the full potential of naturally-derived scaffolds.
Collapse
Affiliation(s)
- Ashley B Allen
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive NW, Atlanta, GA, 30332, USA,
| | | | | | | |
Collapse
|
21
|
Piatkowski A, Grieb G, Simons D, Bernhagen J, van der Hulst RR. Endothelial progenitor cells--potential new avenues to improve neoangiogenesis and reendothelialization. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 306:43-81. [PMID: 24016523 DOI: 10.1016/b978-0-12-407694-5.00002-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The term endothelial progenitor cell (EPC) was established more than 10 years ago and is used to refer to a group of circulating cells that display endothelial lineage qualities and are able to home to areas of ischemia or vascular injury and to facilitate the repair of damaged blood vessels or develop new vessels as needed. This chapter reviews the current lineage relationships among all the cells called EPC and will clear the terminology used in EPC research. Furthermore, an overview of the clinical and in vitro research, as well as cytokine and drug interactions and potential EPC applications, is given.
Collapse
Affiliation(s)
- Andrzej Piatkowski
- Department of Plastic Surgery, academisch ziekenhuis Maastricht, MUMC+, Maastricht, The Netherlands.
| | | | | | | | | |
Collapse
|
22
|
Tissue engineered scaffolds for an effective healing and regeneration: reviewing orthotopic studies. BIOMED RESEARCH INTERNATIONAL 2014; 2014:398069. [PMID: 25250319 PMCID: PMC4163448 DOI: 10.1155/2014/398069] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 07/22/2014] [Indexed: 12/20/2022]
Abstract
It is commonly stated that tissue engineering is the most promising approach to treat or replace failing tissues/organs. For this aim, a specific strategy should be planned including proper selection of biomaterials, fabrication techniques, cell lines, and signaling cues. A great effort has been pursued to develop suitable scaffolds for the restoration of a variety of tissues and a huge number of protocols ranging from in vitro to in vivo studies, the latter further differentiating into several procedures depending on the type of implantation (i.e., subcutaneous or orthotopic) and the model adopted (i.e., animal or human), have been developed. All together, the published reports demonstrate that the proposed tissue engineering approaches spread toward multiple directions. The critical review of this scenario might suggest, at the same time, that a limited number of studies gave a real improvement to the field, especially referring to in vivo investigations. In this regard, the present paper aims to review the results of in vivo tissue engineering experimentations, focusing on the role of the scaffold and its specificity with respect to the tissue to be regenerated, in order to verify whether an extracellular matrix-like device, as usually stated, could promote an expected positive outcome.
Collapse
|
23
|
Song L, Murphy SV, Yang B, Xu Y, Zhang Y, Atala A. Bladder Acellular Matrix and Its Application in Bladder Augmentation. TISSUE ENGINEERING PART B-REVIEWS 2014; 20:163-72. [DOI: 10.1089/ten.teb.2013.0103] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Lujie Song
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina
- Department of Urology, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China
- Shanghai Oriental Institute for Urologic Reconstruction, Shanghai, China
| | - Sean V. Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina
| | - Bin Yang
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuemin Xu
- Department of Urology, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China
- Shanghai Oriental Institute for Urologic Reconstruction, Shanghai, China
| | - Yuanyuan Zhang
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina
| |
Collapse
|
24
|
Zhang W, Yan H. Dysfunction of circulating endothelial progenitor cells in type 1 diabetic rats with diabetic retinopathy. Graefes Arch Clin Exp Ophthalmol 2013; 251:1123-31. [PMID: 23385543 DOI: 10.1007/s00417-013-2267-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/27/2012] [Accepted: 01/15/2013] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To investigate the role of endothelial progenitor cell (EPC) in the pathogenesis of diabetic retinopathy (DR) in streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM) rats. METHODS A total of 160 male Wistar rats (12 weeks old; 250-350 g) were randomly assigned into four groups (n = 40 for each), including control (group 1, no treatment), T1DM1 (group 2, 1 month after 50 mg/kg of STZ, single i.p.), T1DM3 (group 3, 3 months after 50 mg/kg of STZ, single i.p.), T1DM6 (group 4, 6 months after 50 mg/kg of STZ, single i.p.). Enumeration of circulating EPC from peripheral blood was measured by flow cytometry. EPC from bone marrow of rats was cultured in vitro to evaluate its function of proliferation, adhesion, and migration activities. Plasma levels of vascular endothelial growth factor (VEGF) and nitric oxide (NO) were measured by enzyme-linked immunosorbent assay (ELISA). Retinal sections were imaged by light microscopy and a transmission electron microscope (TEM). RESULTS The numbers of circulating EPC were significantly decreased in diabetic groups compared with the control group. Impaired proliferation, adhesion, and migratory activities of cultured EPC were observed in diabetic groups. There were significantly higher levels of plasma VEGF but lower levels of plasma NO in diabetic groups than those in non-diabetic controls. The significantly reduced thickness and obvious disorganized retinal cell layers were seen in T1DM DR rats. In the diabetic groups, we also found that T1DM rats developed telangiectatic vessels, vacuolar degeneration of ganglion cells, and thickened capillary basement membrane with capillary lumen stenosis in the retina. Significantly raised EPC numbers during DR formation and progression were also found. CONCLUSIONS The reduced numbers and impaired function of circulating EPC may contribute to the pathogenesis of DR in T1DM rats.
Collapse
Affiliation(s)
- Wei Zhang
- Department of Ophthalmology, Tianjin Medical University General Hospital, No. 154, Anshan Road, Tianjin 300052, China
| | | |
Collapse
|
25
|
Current world literature. Curr Opin Pediatr 2012; 24:770-9. [PMID: 23146873 DOI: 10.1097/mop.0b013e32835af8de] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
26
|
Omega-3 polyunsaturated fatty acids reduce vascular endothelial growth factor production and suppress endothelial wound repair. J Cardiovasc Transl Res 2012; 6:287-93. [PMID: 22993129 DOI: 10.1007/s12265-012-9409-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 08/30/2012] [Indexed: 01/06/2023]
Abstract
Long-chain polyunsaturated omega-3 fatty acids (n-3 PUFAs) such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have diverse beneficial effects on cardiovascular diseases and have been used widely as supplements in reducing the risk of cardiovascular diseases. The beneficial effects are believed to be related to the anti-inflammatory and antioxidant action of n-3 PUFA. EPA and DHA can inhibit inflammatory cytokine-induced endothelial activation and reduce endothelial migration and proliferation. Revascularisation is the major therapeutic approach for end-stage cardiovascular diseases, and endothelial migration and proliferation are essential for the success of revascularisation. The aim of this study was to investigate the role of n-3 PUFAs on vascular endothelial wound repair. A scratch-wound repair assay was carried out in cultured human microvascular endothelial cells (HMEC-1) with and without different concentrations of DHA or EPA. The effect of DHA and EPA on HMEC-1 proliferation was examined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The effect of DHA and EPA on vegf mRNA expression was detected by real-time RT-PCR and vascular endothelial growth factor (VEGF) protein secretion by enzyme-linked immunosorbent assay. DHA and EPA dose-dependently suppressed HMEC-1 cell proliferation and wound repair. DHA and EPA treatment did not induce significant HMEC-1 cell death. The treatment, however, significantly suppressed vegf mRNA expression and protein secretion in both normoxia and hypoxia culture conditions. The addition of exogenous VEGF prevented DHA- and EPA-mediated suppression of HMEC-1 cell proliferation. DHA and EPA have anti-angiogenic effect partially through vegf suppression. The use of DHA and EPA may benefit angiogenic diseases, but may have potential side effects to patients undergoing revascularisation therapy. Further studies will be required to confirm the effect of n-3 PUFAs on vascular repair.
Collapse
|
27
|
Jeon SY, Park JS, Yang HN, Woo DG, Park KH. Co-delivery of SOX9 genes and anti-Cbfa-1 siRNA coated onto PLGA nanoparticles for chondrogenesis of human MSCs. Biomaterials 2012; 33:4413-23. [DOI: 10.1016/j.biomaterials.2012.02.051] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 02/27/2012] [Indexed: 01/09/2023]
|