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Zhu W, Han L, Wu Y, Tong L, He L, Wang Q, Yan Y, Pan T, Shen J, Song Y, Shen Y, Zhu Q, Zhou J. Keratin 15 protects against cigarette smoke-induced epithelial mesenchymal transformation by MMP-9. Respir Res 2023; 24:297. [PMID: 38007424 PMCID: PMC10675954 DOI: 10.1186/s12931-023-02598-w] [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: 05/04/2023] [Accepted: 11/07/2023] [Indexed: 11/27/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD), a chronic inflammatory lung disease, is a leading cause of morbidity and mortality worldwide. Prolonged cigarette smoking (CS) that causes irreversible airway remodeling and significantly reduces lung function is a major risk factor for COPD. Keratin15+ (Krt15+) cells with the potential of self-renewal and differentiation properties have been implicated in the maintenance, proliferation, and differentiation of airway basal cells; however, the role of Krt15 in COPD is not clear. METHODS Krt15 knockout (Krt15-/-) and wild-type (WT) mice of C57BL/6 background were exposed to CS for six months to establish COPD models. Krt15-CrePGR;Rosa26-LSL-tdTomato mice were used to trace the fate of the Krt15+ cells. Hematoxylin and eosin (H&E) and Masson stainings were performed to assess histopathology and fibrosis, respectively. Furthermore, lentivirus-delivered short hairpin RNA (shRNA) was used to knock down KRT15 in human bronchial epithelial (HBE) cells stimulated with cigarette smoke extract (CSE). The protein expression was assessed using western blot, immunohistochemistry, and enzyme-linked immunosorbent assay. RESULTS Krt15-/- CS mice developed severe inflammatory cell infiltration, airway remodeling, and emphysema. Moreover, Krt15 knockout aggravated CS-induced secretion of matrix metalloproteinase-9 (MMP-9) and epithelial-mesenchymal transformation (EMT), which was reversed by SB-3CT, an MMP-9 inhibitor. Consistent with this finding, KRT15 knockdown promoted MMP-9 expression and EMT progression in vitro. Furthermore, Krt15+ cells gradually increased in the bronchial epithelial cells and were transformed into alveolar type II (AT2) cells. CONCLUSION Krt15 regulates the EMT process by promoting MMP-9 expression and protects the lung tissue from CS-induced injury, inflammatory infiltration, and apoptosis. Furthermore, Krt15+ cells transformed into AT2 cells to protect alveoli. These results suggest Krt15 as a potential therapeutic target for COPD.
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Affiliation(s)
- Wensi Zhu
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Linxiao Han
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Yuanyuan Wu
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Lin Tong
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Ludan He
- Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Qin Wang
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Yu Yan
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Ting Pan
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Jie Shen
- Research Center for Chemical Injury, Emergency and Critical Medicine of Fudan University, Fudan University, Shanghai, 200540, China
- Center of Emergency and Critical Medicine in Jinshan Hospital of Fudan University, Fudan University, Shanghai, 200540, China
- Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai, 200540, China
| | - Yuanlin Song
- Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China
| | - Yao Shen
- Department of Respiratory and Critical Care Medicine, Shanghai Pudong Hospital, 2800 Gongwei Rd, Shanghai, 201399, China.
| | - Qiaoliang Zhu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China.
| | - Jian Zhou
- Department of Pulmonary and Critical Care Medicine, Shanghai Respiratory Research Institute, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032, China.
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, 180 Fenglin Road, Shanghai, 200032, China.
- Shanghai Key Laboratory of Lung Inflammation and Injury, 180 Fenglin Road, Shanghai, 200032, China.
- Research Center for Chemical Injury, Emergency and Critical Medicine of Fudan University, Fudan University, Shanghai, 200540, China.
- Center of Emergency and Critical Medicine in Jinshan Hospital of Fudan University, Fudan University, Shanghai, 200540, China.
- Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai, 200540, China.
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Cusumano A, Roshanravan H, Chao-Shern C, Sebastiani J, Levialdi Ghiron JH, DeDionisio L, Moore T. Genetic prescreening of a candidate for laser refractive surgery identifies risk for inadequate tissue response: a case report. J Med Case Rep 2022; 16:207. [PMID: 35578349 PMCID: PMC9109339 DOI: 10.1186/s13256-022-03395-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 03/31/2022] [Indexed: 12/01/2022] Open
Abstract
Background Inadequate response to corneal laser refractive surgery, e.g., ectatic corneal diseases, may not be identified by conventional examinations, hence creating therapeutic uncertainty. Herein we demonstrate the application of genetic prescreening to augment preassessment for corneal laser refractive surgery and highlight the ability to prevent the possibility of enrolling a subject at risk for developing ectatic corneal diseases. Case presentation Preoperative tests were performed alongside deoxyribonucleic acid (DNA) sequencing of 75 genes specific to the structure and health of the eye of a 44-year-old Caucasian male candidate for corneal laser refractive surgery. The patient had no medical, family, or psychosocial history, nor symptoms that could lead to suspect any corneal abnormalities, and conventional preoperative tests confirmed that no corneal abnormalities were present. The sequencing results uncovered rare DNA variants within the ADGRV1, PTK2, ZNF469, and KRT15 genes. These variants were considered potential risk factors for inadequate response in the patient post corneal laser refractive surgery. Subsequent reevaluation with three different last-generation corneal tomographers identified in the left eye a “warning” for a deformity of the posterior profile of the cornea. Conclusions Genetic prescreening identifies potential risk of inadequate response to corneal laser refractive surgery where current technologies in use may lead to a hazardous predictive diagnostic uncertainty.
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Li S, Zenkel M, Kruse FE, Gießl A, Schlötzer-Schrehardt U. Identification, Isolation, and Characterization of Melanocyte Precursor Cells in the Human Limbal Stroma. Int J Mol Sci 2022; 23:ijms23073756. [PMID: 35409129 PMCID: PMC8998324 DOI: 10.3390/ijms23073756] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023] Open
Abstract
Given their vital role in the homeostasis of the limbal stem cell niche, limbal melanocytes have emerged as promising candidates for tissue engineering applications. This study aimed to isolate and characterize a population of melanocyte precursors in the limbal stroma, compared with melanocytes originating from the limbal epithelium, using magnetic-activated cell sorting (MACS) with positive (CD117/c-Kit microbeads) or negative (CD326/EpCAM or anti-fibroblast microbeads) selection approaches. Both approaches enabled fast and easy isolation and cultivation of pure limbal epithelial and stromal melanocyte populations, which differed in phenotype and gene expression, but exhibited similar functional properties regarding proliferative potential, pigmentation, and support of clonal growth of limbal epithelial stem/progenitor cells (LEPCs). In both melanocyte populations, limbus-specific matrix (laminin 511-E8) and soluble factors (LEPC-derived conditioned medium) stimulated melanocyte adhesion, dendrite formation, melanogenesis, and expression of genes involved in UV protection and immune regulation. The findings provided not only a novel protocol for the enrichment of pure melanocyte populations from limbal tissue applying easy-to-use MACS technology, but also identified a population of stromal melanocyte precursors, which may serve as a reservoir for the replacement of damaged epithelial melanocytes and an alternative resource for tissue engineering applications.
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Bolanta S, Malijauskaite S, McGourty K, O’Reilly EJ. Synthesis of Poly(acrylic acid)-Cysteine-Based Hydrogels with Highly Customizable Mechanical Properties for Advanced Cell Culture Applications. ACS OMEGA 2022; 7:9108-9117. [PMID: 35350353 PMCID: PMC8945188 DOI: 10.1021/acsomega.1c03408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/10/2021] [Indexed: 05/15/2023]
Abstract
The fabrication of highly customizable scaffolds is a key enabling technology in the development of predictive in vitro cell models for applications in drug discovery, cancer research, and regenerative medicine. Naturally derived and synthetic hydrogels are good candidates for in vitro cell growth studies, owing to their soft and biocompatible nature; however, they are often hindered by limited ranges of stiffness and the requirement to modify the gel with additional extracellular matrix (ECM) proteins for cell adherence. Here, we report on the synthesis of a printable synthetic hydrogel based on cysteine-modified poly(acrylic acid) (PAA-Cys) with tuneable mechanical and swelling properties by incorporating acrylic acid into the PAA-Cys network and subsequent photoinitiated thiol-acrylate cross-linking. Control of the acrylic acid concentration and UV curing time produces a series of hydrogels with swelling ratios in excess of 100% and Young's modulus values ranging from ∼2 to ∼35 kPa, of which most soft tissues fall within. Biocompatibility studies with RPE1 cells showed excellent cell adhesion and cell viability without the need for further modification with ECM proteins, but still can be modified as needed. The versatility of the hydrogel tuneable properties is demonstrated by culturing with RPE1 cells, which in vivo perform an important function in the visual process and the dysfunction of which may lead to various retinal abnormalities, such as glaucoma.
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Affiliation(s)
- Sharon
O. Bolanta
- Department
of Chemical Sciences, Bernal Institute University
of Limerick, Limerick V94 T9PX, Ireland
| | - Sigita Malijauskaite
- Department
of Chemical Sciences, Bernal Institute University
of Limerick, Limerick V94 T9PX, Ireland
| | - Kieran McGourty
- Department
of Chemical Sciences, Bernal Institute University
of Limerick, Limerick V94 T9PX, Ireland
- Health
Research Institute (HRI), University of Limerick, Limerick V94 T9PX, Ireland
| | - Emmet J. O’Reilly
- Department
of Chemical Sciences, Bernal Institute University
of Limerick, Limerick V94 T9PX, Ireland
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5
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Polisetti N, Gießl A, Zenkel M, Heger L, Dudziak D, Naschberger E, Stich L, Steinkasserer A, Kruse FE, Schlötzer-Schrehardt U. Melanocytes as emerging key players in niche regulation of limbal epithelial stem cells. Ocul Surf 2021; 22:172-189. [PMID: 34425298 DOI: 10.1016/j.jtos.2021.08.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/05/2021] [Accepted: 08/14/2021] [Indexed: 02/09/2023]
Abstract
PURPOSE Limbal melanocytes (LMel) represent essential components of the corneal epithelial stem cell niche and are known to protect limbal epithelial stem/progenitor cells (LEPCs) from UV damage by transfer of melanosomes. Here, we explored additional functional roles for LMel in niche homeostasis, immune regulation and angiostasis. METHODS Human corneoscleral tissues were morphologically analyzed in normal, inflammatory and wound healing conditions. The effects of LMel on LEPCs were analyzed in direct and indirect co-culture models using electron microscopy, immunocytochemistry, qRT-PCR, Western blotting and functional assays; limbal mesenchymal stromal cells and murine embryonic 3T3 fibroblasts served as controls. The immunophenotype of LMel was assessed by flow cytometry before and after interferon-γ stimulation, and their immunomodulatory properties were analyzed by mixed lymphocytes reaction, monocyte adhesion assays and cytometric bead arrays. Their angiostatic effects on human umbilical cord endothelial cells (HUVECs) were evaluated by proliferation, migration, and tube formation assays. RESULTS LMel and LEPCs formed structural units in the human limbal stem cell niche in situ, which could be functionally replicated, including melanosome transfer, by co-cultivation in vitro. LMel supported LEPCs during clonal expansion and during epithelial wound healing by stimulating proliferation and migration, and suppressed their differentiation through direct contact and paracrine effects. Under inflammatory conditions, LMel were increased in numbers and upregulated expression of ICAM-1 and MHC II molecules (HLA-DR), but lacked expression of HLA-G, -DP, -DQ and costimulatory molecules CD80 and CD86. They were also found to be potent suppressors of alloreactive T- cell proliferation and cytokine secretion, which largely depended on direct cell-cell interaction. Moreover, the LMel secretome exerted angiostatic activity by inhibiting vascular endothelial cell proliferation and capillary network formation. CONCLUSION These findings suggest that LMel are not only professional melanin-producing cells, but exert various non-canonical functions in limbal niche homeostasis by regulating LEPC maintenance, immune responses, and angiostasis. Their potent regulatory, immunomodulatory and anti-angiogenic properties may have important implications for future regenerative cell therapies.
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Affiliation(s)
- Naresh Polisetti
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany; Eye Center, Medical Center - Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Gießl
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias Zenkel
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Lukas Heger
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Diana Dudziak
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany; Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany; Medical Immunology Campus Erlangen, Erlangen, Germany
| | - Elisabeth Naschberger
- Division of Molecular and Experimental Surgery, Translational Research Center, Department of Surgery, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Lena Stich
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Alexander Steinkasserer
- Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany; Medical Immunology Campus Erlangen, Erlangen, Germany; Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Friedrich E Kruse
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Ursula Schlötzer-Schrehardt
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany.
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Isolation and enrichment of melanocytes from human corneal limbus using CD117 (c-Kit) as selection marker. Sci Rep 2020; 10:17588. [PMID: 33067486 PMCID: PMC7567782 DOI: 10.1038/s41598-020-74869-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022] Open
Abstract
Limbal melanocytes (LM) are located in the basal epithelial layer of the corneoscleral limbus and interact with adjacent limbal epithelial progenitor cells. The exploration of their biological role in the maintenance of the limbal stem cell niche has been limited by the difficulty of LM isolation and cultivation. Here, we report on a facile protocol for the efficient isolation and enrichment of pure populations of human LMs by fluorescence-activated cell sorting (FACS) using antibodies raised against the cell surface marker CD117 (c-Kit). The enriched LMs retain self-renewal capacity and sustained melanin production, and are suitable to study the potential of LMs in stem cell-based corneal tissue engineering.
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Higa K, Higuchi J, Kimoto R, Miyashita H, Shimazaki J, Tsubota K, Shimmura S. Human corneal limbal organoids maintaining limbal stem cell niche function. Stem Cell Res 2020; 49:102012. [PMID: 33039805 DOI: 10.1016/j.scr.2020.102012] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 09/08/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Corneal epithelial stem cells reside in the limbal area between the cornea and conjunctiva. We examined the potential use of limbal organoids as a source of transplantable limbal stem cells. After treating tissue with collagenase, limbal cells were seeded onto Matrigel and cultivated using limbal phenotype maintenance medium. After 1-month, approximately 500 organoids were formed from one donor cornea. Organoids derived from vertical sites (superior and inferior limbus) showed large colony forming efficiency, a higher ratio of slow cycling cells and N-cadherin-expressing epithelial cells compared to horizontal sites. The progenitor markers Keratin (K) 15 and p63 were expressed in epithelial sheets engineered form a single organoid. Organoids transplanted in the limbus of a rabbit limbal deficiency model confirmed the presence of organoid-derived cells extending on to host corneas by immunohistochemistry. Our data show that limbal organoids with a limbal phenotype can be maintained for up to 1 month in vitro which can each give rise to a fully stratified corneal epithelium complete with basal progenitor cells. Limbal organoids were successfully engrafted in vivo to provide epithelial cells in a rabbit limbal deficiency model, suggesting that organoids may be an efficient cell source for clinical use.
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Affiliation(s)
- Kazunari Higa
- Cornea Center Eye Bank, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan.
| | - Junko Higuchi
- Cornea Center Eye Bank, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan.
| | - Reona Kimoto
- Cornea Center Eye Bank, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan
| | - Hideyuki Miyashita
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Jun Shimazaki
- Cornea Center Eye Bank, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan; Department of Ophthalmology, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan.
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - Shigeto Shimmura
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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Zhang F, Qiao S, Li C, Wu B, Reischl S, Neumann PA. The immunologic changes during different phases of intestinal anastomotic healing. J Clin Lab Anal 2020; 34:e23493. [PMID: 32692419 PMCID: PMC7676198 DOI: 10.1002/jcla.23493] [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: 02/01/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 01/06/2023] Open
Abstract
Intestinal anatomosis is a complex and multicellular process that involving three overlapped phases: exudative phase, proliferative phase, and reparative phase. Undisturbed anastomotic healings are crucial for the recovery of patients after operations but unsuccessful healings are linked with a considerable mortality. This time, we concentrate on the immunologic changes during different phases of intestinal anastomotic healing and select several major immune cells and cytokines of each phase to get a better understanding of these immunologic changes in different phases, which will be significant for more precise therapy strategies in anastomoses.
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Affiliation(s)
- Feng Zhang
- Department of General Surgery, Tongren Municipal People's Hospital of Guizhou Medical University(GMU), Guizhou, 554300, China.,Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich(TUM), Munich, 81675, Germany
| | - Song Qiao
- Department of General Surgery, Tongren Municipal People's Hospital of Guizhou Medical University(GMU), Guizhou, 554300, China
| | - Chunqiao Li
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich(TUM), Munich, 81675, Germany
| | - Bo Wu
- Department of General Surgery, Tongren Municipal People's Hospital of Guizhou Medical University(GMU), Guizhou, 554300, China
| | - Stefan Reischl
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich(TUM), Munich, 81675, Germany
| | - Philipp-Alexander Neumann
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich(TUM), Munich, 81675, Germany
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Laminin-511-E8 promotes efficient in vitro expansion of human limbal melanocytes. Sci Rep 2020; 10:11074. [PMID: 32632213 PMCID: PMC7338389 DOI: 10.1038/s41598-020-68120-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/18/2020] [Indexed: 01/08/2023] Open
Abstract
Limbal melanocytes, located in the basal epithelial layer of the corneoscleral limbus, represent essential components of the corneal epithelial stem cell niche, but, due to difficulties in their isolation and cultivation, their biological roles and potential for stem cell-based tissue engineering approaches have not been comprehensively studied. Here, we established a protocol for the efficient isolation and cultivation of pure populations of human limbal melanocytes, which could be expanded at high yield by using recombinant laminin (LN)-511-E8 as culture substrate. Co-cultivation of limbal melanocytes with limbal epithelial stem/progenitor cells on fibrin hydrogels pre-incubated with LN-511-E8 resulted in multilayered stratified epithelial constructs within ten days. By reproducing physiological cell–cell and cell–matrix interactions of the native niche environment, these biomimetic co-culture systems provide a promising experimental model for investigating the functional roles of melanocytes in the limbal stem cell niche and their suitability for developing advanced epithelial grafts for ocular surface surface reconstruction.
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10
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Azmi SM, Salih M, Abdelrazeg S, Roslan FF, Mohamed R, Tan JJ, Shaharuddin B. Human umbilical cord-mesenchymal stem cells: a promising strategy for corneal epithelial regeneration. Regen Med 2020; 15:1381-1397. [PMID: 32253974 DOI: 10.2217/rme-2019-0103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aim: As a strategy to improve the outcome of ex vivo cultivated corneal epithelial transplantation, the role of human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) is investigated in promoting corneal epithelial growth and functions. Materials & methods: Human telomerase-immortalized corneal epithelial cells were characterized and its functions evaluated by scratch migration assay, cellular senescence, HLA expression and spheres formation with hUC-MSC. Results: Expression of corneal epithelial markers was influenced by the duration and method of co-culture. Indirect co-culture improved cellular migration and delayed senescence when treated after 3 and 5 days. hUC-MSC downregulated expression of HLA Class I and II in IFN-γ-stimulated human telomerase-immortalized corneal epithelial cells. Conclusion: hUC-MSC promote corneal epithelial growth and functions after treatment with hUC-MSC.
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Affiliation(s)
- Siti Maisura Azmi
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia
| | - Mohamed Salih
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia.,Faculty of Medical Laboratory Sciences, National University Sudan, Khartoum, Sudan
| | - Samar Abdelrazeg
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia.,Faculty of Medical Laboratory Sciences, National University Sudan, Khartoum, Sudan
| | - Fatin Fazrina Roslan
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia
| | - Rafeezul Mohamed
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia
| | - Jun Jie Tan
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia
| | - Bakiah Shaharuddin
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Penang 13200, Malaysia
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11
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Koivusalo L, Kauppila M, Samanta S, Parihar VS, Ilmarinen T, Miettinen S, Oommen OP, Skottman H. Tissue adhesive hyaluronic acid hydrogels for sutureless stem cell delivery and regeneration of corneal epithelium and stroma. Biomaterials 2019; 225:119516. [PMID: 31574405 DOI: 10.1016/j.biomaterials.2019.119516] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 09/21/2019] [Indexed: 01/05/2023]
Abstract
Regeneration of a severely damaged cornea necessitates the delivery of both epithelium-renewing limbal epithelial stem cells (LESCs) and stroma-repairing cells, such as human adipose-derived stem cells (hASCs). Currently, limited strategies exist for the delivery of these therapeutic cells with tissue-like cellular organization. With the added risks related to suturing of corneal implants, there is a pressing need to develop new tissue adhesive biomaterials for corneal regeneration. To address these issues, we grafted dopamine moieties into hydrazone-crosslinked hyaluronic acid (HA-DOPA) hydrogels to impart tissue adhesive properties and facilitate covalent surface modification of the gels with basement membrane proteins or peptides. We achieved tissue-like cellular compartmentalization in the implants by encapsulating hASCs inside the hydrogels, with subsequent conjugation of thiolated collagen IV or laminin peptides and LESC seeding on the hydrogel surface. The encapsulated hASCs in HA-DOPA gels exhibited good proliferation and cell elongation, while the LESCs expressed typical limbal epithelial progenitor markers. Importantly, the compartmentalized HA-DOPA implants displayed excellent tissue adhesion upon implantation in a porcine corneal organ culture model. These results encourage sutureless implantation of functional stem cells as the next generation of corneal regeneration.
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Affiliation(s)
- Laura Koivusalo
- Eye Regeneration Group, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33520, Finland
| | - Maija Kauppila
- Eye Regeneration Group, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33520, Finland
| | - Sumanta Samanta
- Bioengineering and Nanomedicine Lab, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33720, Finland
| | - Vijay Singh Parihar
- Bioengineering and Nanomedicine Lab, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33720, Finland
| | - Tanja Ilmarinen
- Eye Regeneration Group, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33520, Finland
| | - Susanna Miettinen
- Adult Stem Cell Group, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Finland & Research, Development and Innovation Centre, Tampere University Hospital, Tampere, 33520, Finland
| | - Oommen P Oommen
- Bioengineering and Nanomedicine Lab, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33720, Finland.
| | - Heli Skottman
- Eye Regeneration Group, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, 33520, Finland.
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