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He J, Shan S, Jiang T, Zhou S, Qin J, Li Q, Yu Z, Cao D, Fang B. Mechanical stretch preconditioned adipose-derived stem cells elicit polarization of anti-inflammatory M2-like macrophages and improve chronic wound healing. FASEB J 2024; 38:e23626. [PMID: 38739537 DOI: 10.1096/fj.202300586r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 03/27/2024] [Accepted: 04/10/2024] [Indexed: 05/16/2024]
Abstract
Transplantation of adipose-derived stem cells (ASCs) is a promising option in the field of chronic wounds treatment. However, the effectiveness of ASCs therapies has been hampered by highly inflammatory environment in chronic wound areas. These problems could be partially circumvented using efficient approaches that boost the survival and anti-inflammatory capacity of transplanted ASCs. Here, by application of mechanical stretch (MS), we show that ASCs exhibits increased survival and immunoregulatory properties in vitro. MS triggers the secretion of macrophage colony stimulating factor (M-CSF) from ASCs, a chemokine that is linked to anti-inflammatory M2-like macrophages polarization. When the MS-ASCs were transplanted to chronic wounds, the wound area yields significantly faster closure rate and lower inflammatory mediators, largely due to macrophages polarization driven by transplanted MS-ASCs. Thus, our work shows that mechanical stretch can be harnessed to enhance ASCs transplantation efficiency in chronic wounds treatment.
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Affiliation(s)
- Jiahao He
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengzhou Shan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Taoran Jiang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sizheng Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiaqi Qin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheyuan Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dejun Cao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Fang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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Xu L, Wang H, Luo L, Deng J, Chen F, Wang Y, Tang J, Wu Z, Zhou Q, Chen J. Aspartic acid and epidermal growth factor modified decellularized rabbit conjunctiva for conjunctival reconstruction. BIOMATERIALS ADVANCES 2022; 143:213164. [PMID: 36343391 DOI: 10.1016/j.bioadv.2022.213164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 08/31/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Conjunctival reconstruction is an indispensable part of ocular surface regeneration. Decellularized matrix has been considered as an ideal conjunctival substitution for conjunctival reconstruction. In the present study, we report the use of a decellularized rabbit conjunctiva (DRC) for conjunctival reconstruction in the rabbit surgical trauma model. Prepared by the phospholipase A2 decellularized method, the DRC was nearly DNA free while the collagen structure and natural extracellular matrix (ECM) were well preserved. In order to improve the performance of DRC, aspartic acid (Asp) was used as a spacer arm to crosslink epidermal growth factor (EGF) on the DRC to obtain DRC-Asp-EGF. The conjunctival epithelial cells cultured on the DRC-Asp-EGF showed a higher survival rates and a greater potential to differentiate into conjunctival goblet cells (CGCs) than those on the DRC. Finally, three groups were set to evaluate the transplantation effects in the rabbit surgical trauma model for 28 days: DRC-Asp-EGF group, amniotic membrane (AM) group, and ungrafted group. The DRC-Asp-EGF group was completely re-epithelized, and more CGCs were regenerated than the AM group, while no significant improvements were observed in the ungrafted group. Intact collagen structure, angiogenesis, and no scar formation were also observed in the DRC-Asp-EGF group. These results suggest that DRC-Asp-EGF is a feasible and effective transplant for conjunctival reconstruction and ocular surface regeneration.
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Affiliation(s)
- Liling Xu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative Biology, Jinan University, Guangzhou, China
| | - Hua Wang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Lishi Luo
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China; Shenzhen Eye Hospital, Affiliated Hospital of Jinan University, Shenzhen, China
| | - Jingyue Deng
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China; Department of Ophthalmology, The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Fangyuan Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yingwei Wang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Junjie Tang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
| | - Zheng Wu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative Biology, Jinan University, Guangzhou, China.
| | - Qing Zhou
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China.
| | - Jian Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China.
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3
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Hong IS. Enhancing Stem Cell-Based Therapeutic Potential by Combining Various Bioengineering Technologies. Front Cell Dev Biol 2022; 10:901661. [PMID: 35865629 PMCID: PMC9294278 DOI: 10.3389/fcell.2022.901661] [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: 03/22/2022] [Accepted: 06/17/2022] [Indexed: 12/05/2022] Open
Abstract
Stem cell-based therapeutics have gained tremendous attention in recent years due to their wide range of applications in various degenerative diseases, injuries, and other health-related conditions. Therapeutically effective bone marrow stem cells, cord blood- or adipose tissue-derived mesenchymal stem cells (MSCs), embryonic stem cells (ESCs), and more recently, induced pluripotent stem cells (iPSCs) have been widely reported in many preclinical and clinical studies with some promising results. However, these stem cell-only transplantation strategies are hindered by the harsh microenvironment, limited cell viability, and poor retention of transplanted cells at the sites of injury. In fact, a number of studies have reported that less than 5% of the transplanted cells are retained at the site of injury on the first day after transplantation, suggesting extremely low (<1%) viability of transplanted cells. In this context, 3D porous or fibrous national polymers (collagen, fibrin, hyaluronic acid, and chitosan)-based scaffold with appropriate mechanical features and biocompatibility can be used to overcome various limitations of stem cell-only transplantation by supporting their adhesion, survival, proliferation, and differentiation as well as providing elegant 3-dimensional (3D) tissue microenvironment. Therefore, stem cell-based tissue engineering using natural or synthetic biomimetics provides novel clinical and therapeutic opportunities for a number of degenerative diseases or tissue injury. Here, we summarized recent studies involving various types of stem cell-based tissue-engineering strategies for different degenerative diseases. We also reviewed recent studies for preclinical and clinical use of stem cell-based scaffolds and various optimization strategies.
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Affiliation(s)
- In-Sun Hong
- Department of Health Sciences and Technology, GAIHST, Gachon University, Seongnam, South Korea
- Department of Molecular Medicine, School of Medicine, Gachon University, Seongnam, South Korea
- *Correspondence: In-Sun Hong,
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4
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Wong KU, Zhang A, Akhavan B, Bilek MM, Yeo GC. Biomimetic Culture Strategies for the Clinical Expansion of Mesenchymal Stromal Cells. ACS Biomater Sci Eng 2021. [PMID: 33599471 DOI: 10.1021/acsbiomaterials.0c01538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mesenchymal stromal/stem cells (MSCs) typically require significant ex vivo expansion to achieve the high cell numbers required for research and clinical applications. However, conventional MSC culture on planar (2D) plastic surfaces has been shown to induce MSC senescence and decrease cell functionality over long-term proliferation, and usually, it has a high labor requirement, a high usage of reagents, and therefore, a high cost. In this Review, we describe current MSC-based therapeutic strategies and outline the important factors that need to be considered when developing next-generation cell expansion platforms. To retain the functional value of expanded MSCs, ex vivo culture systems should ideally recapitulate the components of the native stem cell microenvironment, which include soluble cues, resident cells, and the extracellular matrix substrate. We review the interplay between these stem cell niche components and their biological roles in governing MSC phenotype and functionality. We discuss current biomimetic strategies of incorporating biochemical and biophysical cues in MSC culture platforms to grow clinically relevant cell numbers while preserving cell potency and stemness. This Review summarizes the current state of MSC expansion technologies and the challenges that still need to be overcome for MSC clinical applications to be feasible and sustainable.
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Affiliation(s)
- Kuan Un Wong
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Anyu Zhang
- School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Behnam Akhavan
- School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Marcela M Bilek
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Giselle C Yeo
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
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5
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Nanotechnology shaping stem cell therapy: Recent advances, application, challenges, and future outlook. Biomed Pharmacother 2021; 137:111236. [PMID: 33486201 DOI: 10.1016/j.biopha.2021.111236] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 01/10/2023] Open
Abstract
Currently, stem cell nanotechnology is one of the novel and exciting fields. Certain experimental studies conducted on the interaction of stem cells with nanostructures or nanomaterials have made significant progress. The significance of nanostructures, nanotechnology, and nanomaterials in the development of stem cell-based therapies for degenerative diseases and injuries has been well established. Specifically, the structure and properties of nanomaterials affecting the propagation and differentiation of stem cells have become a new interdisciplinary frontier in material science and regeneration medicines. In the current review, we highlight the recent major progress in this field, explore the application prospects, and discuss the issues, approaches, and challenges, to improve the applications of nanotechnology in the research and development of stem cells.
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6
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Ma B, Wells A, Wei L, Zheng J. Prostate cancer liver metastasis: Dormancy and resistance to therapy. Semin Cancer Biol 2020; 71:2-9. [PMID: 32663571 DOI: 10.1016/j.semcancer.2020.07.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/06/2020] [Indexed: 12/24/2022]
Abstract
Liver metastasis causes nearly half of death from solid tumors. Metastatic lesions, to the liver in particular, can become detectable years or decades after primary tumor removal, leaving an uncertain long-term prognosis in patients. Prostate cancer (PCa), a prominent metastatic dormant cancer, has the worst prognosis when found in the liver compared to other metastatic sites. These metastatic nodules display a therapy resistance in the liver pro-metastatic microenvironment; the resistance appears to be conferred by both dormancy and independent of dormancy when the nodules emerge. Within the review, the molecular underpinnings of how the liver aids and protects PCa cells seeding, colonization and resistance will be discussed.
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Affiliation(s)
- Bo Ma
- Cancer Institute, Xuzhou Medical University, 84 Huaihai Xi Road, Quanshan, Xuzhou, Jiangsu 221002, China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Alan Wells
- Department of Pathology, University of Pittsburgh, S713 Scaife Hall, 3550 Terrace St, Pittsburgh, PA 15261, USA; Pittsburgh VA Medical Center, VA Pittsburgh Healthcare System, Pittsburgh, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, USA; Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Liang Wei
- Cancer Institute, Xuzhou Medical University, 84 Huaihai Xi Road, Quanshan, Xuzhou, Jiangsu 221002, China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Junnian Zheng
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
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7
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c-Jun Overexpression Accelerates Wound Healing in Diabetic Rats by Human Umbilical Cord-Derived Mesenchymal Stem Cells. Stem Cells Int 2020; 2020:7430968. [PMID: 32399050 PMCID: PMC7201444 DOI: 10.1155/2020/7430968] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/19/2022] Open
Abstract
Objective Mesenchymal stem cells (MSCs) are considered a promising therapy for wound healing. Here, we explored the role of c-Jun in diabetic wound healing using human umbilical cord-derived MSCs (hUC-MSCs). Methods Freshly isolated hUC-MSCs were subjected to extensive in vitro subcultivation. The cell proliferative and migratory capacities were assessed by the Cell Counting Kit-8 and scratch assays, respectively. c-Jun expression was evaluated by RT-PCR and western blot analysis. The function of c-Jun was investigated with lentivirus transduction-based gene silencing and overexpression. Diabetes mellitus was induced in SD rats on a high-glucose/fat diet by streptozocin administration. Wounds were created on the dorsal skin. The effects of c-Jun silencing and overexpression on wound closure by hUC-MSCs were examined. Reepithelialization and angiogenesis were assessed by histological and immunohistochemical analysis, respectively. Platelet-derived growth factor A (PDGFA), hepatocyte growth factor (HGF), and vascular endothelial growth factor (VEGF) levels were determined by western blot analysis. Results hUC-MSCs showed gradually decreased cell proliferation, migration, and c-Jun expression during subcultivation. c-Jun silencing inhibited cell proliferation and migration, while c-Jun overexpression enhanced proliferation but not migration. Compared with untransduced hUC-MSCs, local subcutaneous injection of c-Jun-overexpressing hUC-MSCs accelerated wound closure, enhanced angiogenesis and reepithelialization at the wound bed, and increased PDGFA and HGF levels in wound tissues. Conclusion c-Jun overexpression promoted hUC-MSC proliferation and migration in vitro and accelerated diabetic wound closure, reepithelization, and angiogenesis by hUC-MSCs in vivo. These beneficial effects of c-Jun overexpression in diabetic wound healing by hUC-MSCs were at least partially mediated by increased PDGFA and HGF levels in wound tissues.
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8
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Madsen SD, Jones SH, Tucker HA, Giler MK, Muller DC, Discher CT, Russell KC, Dobek GL, Sammarco MC, Bunnell BA, O'Connor KC. Survival of aging CD264 + and CD264 - populations of human bone marrow mesenchymal stem cells is independent of colony-forming efficiency. Biotechnol Bioeng 2019; 117:223-237. [PMID: 31612990 DOI: 10.1002/bit.27195] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 09/20/2019] [Accepted: 10/07/2019] [Indexed: 12/17/2022]
Abstract
In vivo mesenchymal stem cell (MSC) survival is relevant to therapeutic applications requiring engraftment and potentially to nonengraftment applications as well. MSCs are a mixture of progenitors at different stages of cellular aging, but the contribution of this heterogeneity to the survival of MSC implants is unknown. Here, we employ a biomarker of cellular aging, the decoy TRAIL receptor CD264, to compare the survival kinetics of two cell populations in human bone marrow MSC (hBM-MSC) cultures. Sorted CD264+ hBM-MSCs from two age-matched donors have elevated β-galactosidase activity, decreased differentiation potential and form in vitro colonies inefficiently relative to CD264- hBM-MSCs. Counterintuitive to their aging phenotype, CD264+ hBM-MSCs exhibited comparable survival to matched CD264- hBM-MSCs from the same culture during in vitro colony formation and in vivo when implanted ectopically in immunodeficient NIH III mice. In vitro and in vivo survival of these two cell populations were independent of colony-forming efficiency. These findings have ramifications for the preparation of hBM-MSC therapies given the prevalence of aging CD264+ cells in hBM-MSC cultures and the popularity of colony-forming efficiency as a quality control metric in preclinical and clinical studies with MSCs.
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Affiliation(s)
- Sean D Madsen
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana.,Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Sean H Jones
- Department of Comparative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - H Alan Tucker
- Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Margaret K Giler
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana.,Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Dyllan C Muller
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana
| | - Carson T Discher
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana
| | - Katie C Russell
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana
| | - Georgina L Dobek
- Department of Comparative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Mimi C Sammarco
- Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana.,Department of Surgery, School of Medicine, Tulane University, New Orleans, Louisiana.,Center for Aging, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Bruce A Bunnell
- Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana.,Center for Aging, School of Medicine, Tulane University, New Orleans, Louisiana.,Department of Pharmacology, School of Medicine, Tulane University, New Orleans, Louisiana
| | - Kim C O'Connor
- Department of Chemical and Biomolecular Engineering, School of Science and Engineering, Tulane University, New Orleans, Louisiana.,Center for Stem Cell Research and Regenerative Medicine, School of Medicine, Tulane University, New Orleans, Louisiana.,Department of Surgery, School of Medicine, Tulane University, New Orleans, Louisiana.,Center for Aging, School of Medicine, Tulane University, New Orleans, Louisiana
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9
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Ma B, Wells A, Clark AM. The pan-therapeutic resistance of disseminated tumor cells: Role of phenotypic plasticity and the metastatic microenvironment. Semin Cancer Biol 2019; 60:138-147. [PMID: 31376430 DOI: 10.1016/j.semcancer.2019.07.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 02/07/2023]
Abstract
Cancer metastasis is the leading cause of mortality in patients with solid tumors. The majority of these deaths are associated with metastatic disease that occurs after a period of clinical remission, anywhere from months to decades following removal of the primary mass. This dormancy is prominent in cancers of the breast and prostate among others, leaving the survivors uncertain about their longer-term prognosis. The most daunting aspect of this dormancy and re-emergence is that the micrometastases in particular, and even large lethal outgrowths are often show resistance to agents to which they have not been exposed. This suggests that in addition to specific mutations that target single agents, there also exist adaptive mechanisms that provide this pan-resistance. Potential molecular underpinnings of which are the topic of this review.
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Affiliation(s)
- Bo Ma
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261, USA; VA Pittsburgh Healthcare System, Pittsburgh, PA 15213, USA
| | - Alan Wells
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261, USA; VA Pittsburgh Healthcare System, Pittsburgh, PA 15213, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, PA 15260, USA; UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Amanda M Clark
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261, USA; VA Pittsburgh Healthcare System, Pittsburgh, PA 15213, USA.
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10
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Bradshaw A, Sylakowski K, Wells A. The Pro-reparative Engine: Stem Cells Aid Healing by Dampening Inflammation. CURRENT PATHOBIOLOGY REPORTS 2018; 6:109-115. [PMID: 30271682 DOI: 10.1007/s40139-018-0167-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Purpose of Review Stem cells have been proposed as sources for tissue replacement when healing does not occur. These cells could contribute directly to skin structures via differentiation, or via producing trophic factors that would 'educate' the micro-environment to encourage tissue repair. Studies in animals have supported both mechanisms, but translation to humans has been challenged by poor cell survival after transplantation. However, the improvement noted with even transient existence suggests another new possibility, that of suppressing the inflammatory response that limits regenerative healing. Herein, we will propose that this immunomodulatory aspect holds promise for promoting skin healing. Recent Findings We have found that stem cell transplantation into wounds can dampen both acute and chronic inflammation, leading to more regenerative-like healing and diminished scarring. Summary Wound healing could be improved by dampening inflammation both initially to allow for tissue replacement to proceed and late to reduce scarring.
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Affiliation(s)
- Andrew Bradshaw
- Departments of Pathology and Bioengineering, and the McGowan, Institute for Regenerative Medicine, University of Pittsburgh, and VA Pittsburgh Health System, Pittsburgh PA 15213 USA
| | - Kyle Sylakowski
- Departments of Pathology and Bioengineering, and the McGowan, Institute for Regenerative Medicine, University of Pittsburgh, and VA Pittsburgh Health System, Pittsburgh PA 15213 USA
| | - Alan Wells
- Departments of Pathology and Bioengineering, and the McGowan, Institute for Regenerative Medicine, University of Pittsburgh, and VA Pittsburgh Health System, Pittsburgh PA 15213 USA
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11
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Abstract
In their native environment, cells are immersed in a complex milieu of biochemical and biophysical cues. These cues may include growth factors, the extracellular matrix, cell-cell contacts, stiffness, and topography, and they are responsible for regulating cellular behaviors such as adhesion, proliferation, migration, apoptosis, and differentiation. The decision-making process used to convert these extracellular inputs into actions is highly complex and sensitive to changes both in the type of individual cue (e.g., growth factor dose/level, timing) and in how these individual cues are combined (e.g., homotypic/heterotypic combinations). In this review, we highlight recent advances in the development of engineering-based approaches to study the cellular decision-making process. Specifically, we discuss the use of biomaterial platforms that enable controlled and tailored delivery of individual and combined cues, as well as the application of computational modeling to analyses of the complex cellular decision-making networks.
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Affiliation(s)
- Pamela K Kreeger
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , .,Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin 53705, USA.,Department of Obstetrics and Gynecology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53705, USA.,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
| | - Laura E Strong
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; ,
| | - Kristyn S Masters
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , .,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA.,Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
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12
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Li M, Zhao Y, Hao H, Han W, Fu X. Theoretical and practical aspects of using fetal fibroblasts for skin regeneration. Ageing Res Rev 2017; 36:32-41. [PMID: 28238941 DOI: 10.1016/j.arr.2017.02.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 02/21/2017] [Accepted: 02/21/2017] [Indexed: 12/17/2022]
Abstract
Cutaneous wounding in late-gestational fetal or postnatal humans results in scar formation without any skin appendages. Early or mid- gestational skin healing in humans is characterized by the absence of scaring in a process resembling regeneration. Tremendous cellular and molecular mechanisms contribute to this distinction, and fibroblasts play critical roles in scar or scarless wound healing. This review discussed the different repair mechanisms involved in wound healing of fibroblasts at different developmental stages and further confirmed that fetal fibroblast transplantation resulted in reduced scar healing in vivo. We also discussed the possible problem in fetal fibroblast transplantation for wound repair. We proposed the use of small molecules to improve the regenerative potential of repairing cells in the wound given that remodeling of the wound microenvironment into a regenerative microenvironment in adults might improve skin regeneration.
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13
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Maisani M, Pezzoli D, Chassande O, Mantovani D. Cellularizing hydrogel-based scaffolds to repair bone tissue: How to create a physiologically relevant micro-environment? J Tissue Eng 2017; 8:2041731417712073. [PMID: 28634532 PMCID: PMC5467968 DOI: 10.1177/2041731417712073] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/26/2017] [Indexed: 12/16/2022] Open
Abstract
Tissue engineering is a promising alternative to autografts or allografts for the regeneration of large bone defects. Cell-free biomaterials with different degrees of sophistication can be used for several therapeutic indications, to stimulate bone repair by the host tissue. However, when osteoprogenitors are not available in the damaged tissue, exogenous cells with an osteoblast differentiation potential must be provided. These cells should have the capacity to colonize the defect and to participate in the building of new bone tissue. To achieve this goal, cells must survive, remain in the defect site, eventually proliferate, and differentiate into mature osteoblasts. A critical issue for these engrafted cells is to be fed by oxygen and nutrients: the transient absence of a vascular network upon implantation is a major challenge for cells to survive in the site of implantation, and different strategies can be followed to promote cell survival under poor oxygen and nutrient supply and to promote rapid vascularization of the defect area. These strategies involve the use of scaffolds designed to create the appropriate micro-environment for cells to survive, proliferate, and differentiate in vitro and in vivo. Hydrogels are an eclectic class of materials that can be easily cellularized and provide effective, minimally invasive approaches to fill bone defects and favor bone tissue regeneration. Furthermore, by playing on their composition and processing, it is possible to obtain biocompatible systems with adequate chemical, biological, and mechanical properties. However, only a good combination of scaffold and cells, possibly with the aid of incorporated growth factors, can lead to successful results in bone regeneration. This review presents the strategies used to design cellularized hydrogel-based systems for bone regeneration, identifying the key parameters of the many different micro-environments created within hydrogels.
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Affiliation(s)
- Mathieu Maisani
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
- Laboratoire BioTis, Inserm U1026, Université de Bordeaux, Bordeaux, France
| | - Daniele Pezzoli
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
| | - Olivier Chassande
- Laboratoire BioTis, Inserm U1026, Université de Bordeaux, Bordeaux, France
| | - Diego Mantovani
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
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Yi DK, Nanda SS, Kim K, Tamil Selvan S. Recent progress in nanotechnology for stem cell differentiation, labeling, tracking and therapy. J Mater Chem B 2017; 5:9429-9451. [DOI: 10.1039/c7tb02532g] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nanotechnology advancements for stem cell differentiation, labeling, tracking and therapeutic applications in cardiac repair, bone, and liver regeneration are delineated.
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Affiliation(s)
- Dong Kee Yi
- Department of Chemistry
- Myongji University
- Yongin 449-728
- South Korea
| | | | - Kwangmeyung Kim
- Center for Theragnosis
- Biomedical Research Institute
- Korea Institute of Science and Technology (KIST)
- Seoul
- South Korea
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