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Hirotani T, Nagase K. Temperature-modulated separation of vascular cells using thermoresponsive-anionic block copolymer-modified glass. Regen Ther 2024; 27:259-267. [PMID: 38601885 PMCID: PMC11004074 DOI: 10.1016/j.reth.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/26/2024] [Accepted: 03/09/2024] [Indexed: 04/12/2024] Open
Abstract
Introduction Vascular tissue engineering is a key technology in the field of regenerative medicine. In tissue engineering, the separation of vascular cells without cell modification is required, as cell modifications affect the intrinsic properties of the cells. In this study, we have developed an effective method for separating vascular cells without cell modification, using a thermoresponsive anionic block copolymer. Methods A thermoresponsive anionic block copolymer, poly(acrylic acid)-b-poly(N-isopropylacryl-amide) (PAAc-b-PNIPAAm), with various PNIPAAm segment lengths, was prepared in two steps: atom transfer radical polymerization and subsequent deprotection. Normal human umbilical vein endothelial cells (HUVECs), normal human dermal fibroblasts, and human aortic smooth muscle cells (SMCs) were seeded onto the prepared thermoresponsive anionic block copolymer brush-modified glass. The adhesion behavior of cells on the copolymer brush was observed at 37 °C and 20 °C. Results A thermoresponsive anionic block copolymer, poly(acrylic acid)-b-poly(N-isopropylacrylamide) (PAAc-b-PNIPAAm), with various PNIPAAm segment lengths was prepared. The prepared copolymer-modified glass exhibited anionic properties attributed to the bottom PAAc segment of the copolymer brush. On the PAAc-b-PNIPAAm, which had a moderate PNIPAAm length, a high adhesion ratio of HUVECs and low adhesion ratio of SMCs were observed at 37 °C. By reducing temperature from 37 °C to 20 °C, the adhered HUVECs were detached, whereas the SMCs maintained adhesion, leading to the recovery of purified HUVECs by changing the temperature. Conclusions The prepared thermoresponsive anionic copolymer-modified glass could be used to separate HUVECs and SMCs by changing the temperature without modifying the cell surface. Therefore, the developed cell separation method will be useful for vascular tissue engineering.
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Affiliation(s)
- Tadashi Hirotani
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
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Nakao M, Nagase K. Harvesting methods of umbilical cord-derived mesenchymal stem cells from culture modulate cell properties and functions. Regen Ther 2024; 26:80-88. [PMID: 38841206 PMCID: PMC11152751 DOI: 10.1016/j.reth.2024.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/11/2024] [Accepted: 05/19/2024] [Indexed: 06/07/2024] Open
Abstract
Introduction Human umbilical cord-derived mesenchymal stem cells (UC-MSCs) are promising candidates for stem cell therapy. Various methods such as enzymatic treatment, cell scraping, and temperature reduction using temperature-responsive cell culture dishes have been employed to culture and harvest UC-MSCs. However, the effects of different harvesting methods on cell properties and functions in vitro remain unclear. In this study, we investigated the properties and functions of UC-MSC using various cell-harvesting methods. Methods UC-MSC suspensions were prepared using treatments with various enzymes, cell scraping, and temperature reduction in temperature-responsive cell culture dishes. UC-MSC sheets were prepared in a temperature-responsive cell culture dish. The properties and functions of the UC-MSC suspensions and sheets were assessed according to Annexin V staining, lactate dehydrogenase (LDH) assay, re-adhesion behavior, and cytokine secretion analysis via enzyme-linked immunosorbent assay. Results Annexin V staining revealed that accutase induced elevated UC-MSC apoptosis. Physical scraping using a cell scraper induced a relatively high LDH release due to damaged cell membranes. Dispase exhibited relatively low adhesion from initial incubation until 3 h. UC-MSC sheets exhibited rapid re-adhesion at 15 min and cell migration at 6 h. UC-MSC sheets expressed higher levels of cytokines such as HGF, TGF-β1, IL-10, and IL-6 than did UC-MSCs in suspension. Conclusions The choice of enzyme and physical scraping methods for harvesting UC-MSCs significantly influenced their activity and function. Thus, selecting appropriate cell-harvesting methods is important for successful stem cell therapy.
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Affiliation(s)
- Mitsuyoshi Nakao
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
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Wang D, Shimamura N, Miwa N, Xiao L. Combined use of hydrogen-rich water and enzyme-digested edible bird's nest improves PMA/LPS-impaired wound healing in human inflammatory gingival tissue equivalents. Hum Cell 2024:10.1007/s13577-024-01065-y. [PMID: 38679666 DOI: 10.1007/s13577-024-01065-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/09/2024] [Indexed: 05/01/2024]
Abstract
Gingival wound healing plays a critical role in maintaining oral health. However, this process can be delayed by oxidative stress and excessive inflammatory responses. In this study, we established a human inflammatory gingival tissue equivalent (iGTE) to investigate the inhibitory effects of hydrogen-rich water (HW), enzyme-digested edible bird's nest (EBND) and sialic acid (SA) on PMA (an inducer of oxidative free radicals)- and LPS (an inflammatory stimulus)-impaired wound healing. The iGTE was constructed by human gingival fibroblasts (hGFs), keratinocytes and macrophages under three-dimensional conditions. Wounds in the iGTE and hGF/keratinocyte monolayers were created by mechanical injury. Tissues and cells were pretreated with HW, EBND, and SA, and then exposed to the inflammatory and oxidative environment induced by PMA (10 ng/mL) and LPS (250 ng/mL). The inflammatory cytokines IL-6 and IL-8 were quantitatively analyzed by ELISA. Histopathological image analysis was performed by HE and immunofluorescence staining. In the iGTE, PMA/LPS significantly reduced the epithelial thickness while causing a decrease in K8/18, E-cadherin, laminin and elastin expression and an increase in COX-2 expression along with ulcer-like lesions. In mechanically scratched hGFs and keratinocyte monolayers, PMA/LPS significantly impaired wound healing, and promoted the secretion of IL-6 and IL-8. Pretreatment of HW, EBND, and SA significantly suppressed PMA/LPS-induced wound healing delay and inflammatory responses in cell monolayers, as well as in the iGTE. Remarkably, the combined use of HW and EBND exhibited particularly robust results. Combined use of HW and EBND may be applied for the prevention and treatment of wound healing delay.
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Affiliation(s)
- Dongliang Wang
- Hebei Edible Bird's Nest Fresh Stew Technology Innovation Center, Bazhou Economic Development Zone, Langfang, 065700, China
| | - Naohiro Shimamura
- Department of Dental Anesthesiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | - Nobuhiko Miwa
- Prefectural University of Hiroshima, Faculty of Life Sciences, Hiroshima, 727-0023, Japan
- Incorporated Association Hydrogen Medical Institute, Minatojima Minamicho 1-6-4, ChuOh-Ku, Kobe, 650-0047, Japan
| | - Li Xiao
- Department of Physiology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-Ku, Tokyo, 102-8159, Japan.
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4
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Lemieux ME, Reveles XT, Rebeles J, Bederka LH, Araujo PR, Sanchez JR, Grayson M, Lai SC, DePalo LR, Habib SA, Hill DG, Lopez K, Patriquin L, Sussman R, Joyce RP, Rebel VI. Detection of early-stage lung cancer in sputum using automated flow cytometry and machine learning. Respir Res 2023; 24:23. [PMID: 36681813 PMCID: PMC9862555 DOI: 10.1186/s12931-023-02327-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/12/2023] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Low-dose spiral computed tomography (LDCT) may not lead to a clear treatment path when small to intermediate-sized lung nodules are identified. We have combined flow cytometry and machine learning to develop a sputum-based test (CyPath Lung) that can assist physicians in decision-making in such cases. METHODS Single cell suspensions prepared from induced sputum samples collected over three consecutive days were labeled with a viability dye to exclude dead cells, antibodies to distinguish cell types, and a porphyrin to label cancer-associated cells. The labeled cell suspension was run on a flow cytometer and the data collected. An analysis pipeline combining automated flow cytometry data processing with machine learning was developed to distinguish cancer from non-cancer samples from 150 patients at high risk of whom 28 had lung cancer. Flow data and patient features were evaluated to identify predictors of lung cancer. Random training and test sets were chosen to evaluate predictive variables iteratively until a robust model was identified. The final model was tested on a second, independent group of 32 samples, including six samples from patients diagnosed with lung cancer. RESULTS Automated analysis combined with machine learning resulted in a predictive model that achieved an area under the ROC curve (AUC) of 0.89 (95% CI 0.83-0.89). The sensitivity and specificity were 82% and 88%, respectively, and the negative and positive predictive values 96% and 61%, respectively. Importantly, the test was 92% sensitive and 87% specific in cases when nodules were < 20 mm (AUC of 0.94; 95% CI 0.89-0.99). Testing of the model on an independent second set of samples showed an AUC of 0.85 (95% CI 0.71-0.98) with an 83% sensitivity, 77% specificity, 95% negative predictive value and 45% positive predictive value. The model is robust to differences in sample processing and disease state. CONCLUSION CyPath Lung correctly classifies samples as cancer or non-cancer with high accuracy, including from participants at different disease stages and with nodules < 20 mm in diameter. This test is intended for use after lung cancer screening to improve early-stage lung cancer diagnosis. Trial registration ClinicalTrials.gov ID: NCT03457415; March 7, 2018.
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Affiliation(s)
| | - Xavier T. Reveles
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Jennifer Rebeles
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Lydia H. Bederka
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Patricia R. Araujo
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Jamila R. Sanchez
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Marcia Grayson
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Shao-Chiang Lai
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
| | - Louis R. DePalo
- grid.59734.3c0000 0001 0670 2351Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Sheila A. Habib
- grid.414059.d0000 0004 0617 9080South Texas Veterans Health Care System (STVHCS), Audie L. Murphy Memorial Veterans Hospital, San Antonio, TX USA
| | - David G. Hill
- Waterbury Pulmonary Associates LLC, Waterbury, CT USA
| | - Kathleen Lopez
- grid.477754.2Radiology Associates of Albuquerque, Albuquerque, NM USA
| | - Lara Patriquin
- grid.477754.2Radiology Associates of Albuquerque, Albuquerque, NM USA ,Present Address: Zia Diagnostic Imaging, Albuquerque, NM USA
| | | | | | - Vivienne I. Rebel
- bioAffinity Technologies, 22211 W I-10, Suite 1206, San Antonio, TX 78257 USA
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Sputum analysis by flow cytometry; an effective platform to analyze the lung environment. PLoS One 2022; 17:e0272069. [PMID: 35976857 PMCID: PMC9385012 DOI: 10.1371/journal.pone.0272069] [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: 04/08/2022] [Accepted: 07/12/2022] [Indexed: 11/19/2022] Open
Abstract
Low dose computed tomography (LDCT) is the standard of care for lung cancer screening in the United States (US). LDCT has a sensitivity of 93.8% but its specificity of 73.4% leads to potentially harmful follow-up procedures in patients without lung cancer. Thus, there is a need for additional assays with high accuracy that can be used as an adjunct to LDCT to diagnose lung cancer. Sputum is a biological fluid that can be obtained non-invasively and can be dissociated to release its cellular contents, providing a snapshot of the lung environment. We obtained sputum from current and former smokers with a 30+ pack-year smoking history and who were either confirmed to have lung cancer or at high risk of developing the disease. Dissociated sputum cells were counted, viability determined, and labeled with a panel of markers to separate leukocytes from non-leukocytes. After excluding debris and dead cells, including squamous epithelial cells, we identified reproducible population signatures and confirmed the samples’ lung origin. In addition to leukocyte and epithelial-specific fluorescent antibodies, we used the highly fluorescent meso-tetra(4-carboxyphenyl) porphyrin (TCPP), known to preferentially stain cancer (associated) cells. We looked for differences in cell characteristics, population size and fluorescence intensity that could be useful in distinguishing cancer samples from high-risk samples. We present our data demonstrating the feasibility of a flow cytometry platform to analyze sputum in a high-throughput and standardized matter for the diagnosis of lung cancer.
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Allen BN, Wang Q, Filali Y, Worthington KS, Kacmarynski DSF. Full-Thickness Oral Mucoperiosteal Defects: Challenges and Opportunities. TISSUE ENGINEERING. PART B, REVIEWS 2022; 28:813-829. [PMID: 34409870 PMCID: PMC9469748 DOI: 10.1089/ten.teb.2021.0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 08/10/2021] [Indexed: 11/12/2022]
Abstract
Regenerative engineering strategies for the oral mucoperiosteum, as may be needed following surgeries, such as cleft palate repair and tumor resection, are underdeveloped compared with those for maxillofacial bone. However, critical-size tissue defects left to heal by secondary intention can lead to complications, such as infection, fistula formation, scarring, and midface hypoplasia. This review describes current clinical practice for replacing mucoperiosteal tissue, including autografts and allografts. Potentially paradigm-shifting experimental regenerative engineering strategies for mucoperiosteal wound healing, such as hybrid grafts and engineered matrices, are also discussed. Throughout the review, the advantages and disadvantages of each replacement or regeneration strategy are outlined in the context of clinical outcomes, quality of life for the patient, availability of materials, and cost of care. Finally, future directions for research and development in the area of mucoperiosteum repair are proposed, with an emphasis on identifying globally available and affordable solutions for promoting mucoperiosteal regeneration. Impact statement Unassisted oral mucoperiosteal wound healing can lead to severe complications such as infection, fistulae, scarring, and developmental abnormalities. Thus, strategies for promoting wound healing must be considered when mucoperiosteal defects are incident to oral surgery, as in palatoplasty or tumor resection. Emerging mucoperiosteal tissue engineering strategies, described in this study, have the potential to overcome the limitations of current standard-of-care donor tissue grafts. For example, the use of engineered mucoperiosteal biomaterials could circumvent concerns about tissue availability and immunogenicity. Moreover, employment of tissue engineering strategies may improve the equity of oral wound care by increasing global affordability and accessibility of materials.
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Affiliation(s)
- Brittany N Allen
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, The University of Iowa, Iowa City, Iowa, USA
| | - Qi Wang
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, The University of Iowa, Iowa City, Iowa, USA
| | - Yassine Filali
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, The University of Iowa, Iowa City, Iowa, USA
| | - Kristan S Worthington
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, The University of Iowa, Iowa City, Iowa, USA
| | - Deborah S F Kacmarynski
- Department of Otolaryngology - Head and Neck Surgery, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
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Aguiar A, Galinato M, Bradley Silva M, Toth B, McVoy MA, Hertel L. Human Cytomegalovirus Replication and Infection-Induced Syncytia Formation in Labial, Foreskin, and Fetal Lung Fibroblasts. Viruses 2021; 13:2355. [PMID: 34960624 PMCID: PMC8708767 DOI: 10.3390/v13122355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/18/2021] [Accepted: 11/22/2021] [Indexed: 12/04/2022] Open
Abstract
Only a handful of cell types, including fibroblasts, epithelial, and endothelial cells, can support human cytomegalovirus (CMV) replication in vitro, in striking contrast to the situation in vivo. While the susceptibility of epithelial and endothelial cells to CMV infection is strongly modulated by their anatomical site of origin, multiple CMV strains have been successfully isolated and propagated on fibroblasts derived from different organs. As oral mucosal cells are likely involved in CMV acquisition, we sought to evaluate the ability of infant labial fibroblasts to support CMV replication, compared to that of commonly used foreskin and fetal lung fibroblasts. No differences were found in the proportion of cells initiating infection, or in the amounts of viral progeny produced after exposure to the fibroblast-adapted CMV strain AD169 or to the endothelial cell-adapted strain TB40/E. Syncytia formation was, however, significantly enhanced in infected labial and lung fibroblasts compared to foreskin-derived cells, and did not occur after infection with AD169. Together, these data indicate that fibroblast populations derived from different tissues are uniformly permissive to CMV infection but retain phenotypic differences of potential importance for infection-induced cell-cell fusion, and ensuing viral spread and pathogenesis in different organs.
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Affiliation(s)
- Alexis Aguiar
- Department of Pediatrics, University of California San Francisco, Oakland, CA 94609, USA; (A.A.); (M.B.S.)
| | - Melissa Galinato
- Center for Immunobiology & Vaccine Development, Children’s Hospital Oakland Research Institute, Oakland, CA 94609, USA;
| | - Maite’ Bradley Silva
- Department of Pediatrics, University of California San Francisco, Oakland, CA 94609, USA; (A.A.); (M.B.S.)
| | - Bryant Toth
- Craniofacial Center, UCSF Benioff Children’s Hospital Oakland, Oakland, CA 94609, USA;
| | - Michael A. McVoy
- Department of Pediatrics, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Laura Hertel
- Department of Pediatrics, University of California San Francisco, Oakland, CA 94609, USA; (A.A.); (M.B.S.)
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Attico E, Galaverni G, Pellegrini G. Clinical Studies of COMET for Total LSCD: a Review of the Methods and Molecular Markers for Follow-Up Characterizations. CURRENT OPHTHALMOLOGY REPORTS 2021. [DOI: 10.1007/s40135-020-00263-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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ROCK inhibitor combined with Ca 2+ controls the myosin II activation and optimizes human nasal epithelial cell sheets. Sci Rep 2020; 10:16853. [PMID: 33033339 PMCID: PMC7544873 DOI: 10.1038/s41598-020-73817-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 09/23/2020] [Indexed: 12/22/2022] Open
Abstract
The proliferation and differentiation of cultured epithelial cells may be modified by Rho-associated kinase (ROCK) inhibition and extracellular Ca2+ concentration. However, it was not known whether a combination would influence the behavior of cultured epithelial cells through changes in the phosphorylation of non-muscle myosin light chain II (MLC). Here we show that the combination of ROCK inhibition with Ca2+ elevation regulated the phosphorylation of MLC and improved both cell expansion and cell–cell adhesion during the culture of human nasal mucosal epithelial cell sheets. During explant culture, Ca2+ enhanced the adhesion of nasal mucosal tissue, while ROCK inhibition downregulated MLC phosphorylation and promoted cell proliferation. During cell sheet culture, an elevation of extracellular Ca2+ promoted MLC phosphorylation and formation of cell–cell junctions, allowing the harvesting of cell sheets without collapse. Moreover, an in vitro grafting assay revealed that ROCK inhibition increased the expansion of cell sheets three-fold (an effect maintained when Ca2+ was also elevated), implying better wound healing potential. We suggest that combining ROCK inhibition with elevation of Ca2+ could facilitate the fabrication of many types of cell graft.
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10
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Transcriptional analysis of cleft palate in TGFβ3 mutant mice. Sci Rep 2020; 10:14940. [PMID: 32913205 PMCID: PMC7483747 DOI: 10.1038/s41598-020-71636-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/17/2020] [Indexed: 12/30/2022] Open
Abstract
Cleft palate (CP) is one of the most common craniofacial birth defects, impacting about 1 in 800 births in the USA. Tgf-β3 plays a critical role in regulating murine palate development, and Tgf-β3 null mutants develop cleft palate with 100% penetrance. In this study, we compared global palatal transcriptomes of wild type (WT) and Tgf-β3 −/− homozygous (HM) mouse embryos at the crucial palatogenesis stages of E14.5, and E16.5, using RNA-seq data. We found 1,809 and 2,127 differentially expressed genes at E16.5 vs. E14.5 in the WT and HM groups, respectively (adjusted p < 0.05; |fold change|> 2.0). We focused on the genes that were uniquely up/downregulated in WT or HM at E16.5 vs. E14.5 to identify genes associated with CP. Systems biology analysis relating to cell behaviors and function of WT and HM specific genes identified functional non-Smad pathways and preference of apoptosis to epithelial-mesenchymal transition. We identified 24 HM specific and 11 WT specific genes that are CP-related and/or involved in Tgf-β3 signaling. We validated the expression of 29 of the 35 genes using qRT-PCR and the trend of mRNA expression is similar to that of RNA-seq data . Our results enrich our understanding of genes associated with CP that are directly or indirectly regulated via TGF-β.
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Ohki T, Yamamoto M. Esophageal regenerative therapy using cell sheet technology. Regen Ther 2020; 13:8-17. [PMID: 33490318 PMCID: PMC7794050 DOI: 10.1016/j.reth.2020.04.009] [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: 11/03/2019] [Revised: 03/20/2020] [Accepted: 04/19/2020] [Indexed: 12/13/2022] Open
Abstract
We have been conducting research on esophageal regenerative therapy using cell sheet technology. In particular, in the endoscopic field, we have pushed forward clinical research on endoscopic transplantation of cultured autologous oral mucosal epithelial cell sheets to esophageal ulcer after endoscopic submucosal dissection (ESD). We started research in this direction using animal models in 2004 and performed clinical research in 2012 in collaboration with Nagasaki University and Karolinska Institute. Although in full-circumferential cases it was difficult to prevent esophageal stricture after ESD, there were no complications and stricture could be suppressed. The cell sheet technology is still in its infancy. However, we are convinced that it has a high potential for application in various areas of gastrointestinal science. In this review, we focus on the pre-clinical and clinical trial results obtained and on the theoretical aspects of (1) stricture prevention, (2) esophageal tissue engineering research, and (3) endoscopic transplantation, and review the esophageal regenerative therapy by cell sheet technology.
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Key Words
- CMC, carboxymethyl cellulose
- CPC, cell-processing center
- Cell sheet technology
- EBD, endoscopic balloon dilation
- ECM, extracellular matrix
- EMR, endoscopic mucosal dissection
- ESD, endoscopic submucosal dissection
- Endoscopic submucosal dissection (ESD)
- Endoscopic transplantation
- Esophageal stricture
- GMP, good manufacturing practice
- OMECS, oral mucosal epithelial cell sheet
- PGA, polyglycolic acid
- PIPAAm, poly(N-isopropylacrylamide)
- PVDF, polyvinylidene difluoride
- Regenerative medicine
- SEMS, self-expandable metallic stent
- TAC, triamcinolone
- Tissue-engineered oral mucosal
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Affiliation(s)
- Takeshi Ohki
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.,Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns), 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Masakazu Yamamoto
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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12
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Kasai Y, Morino T, Kikuchi S, Mitsuyoshi R, Takahashi M, Yamamoto K, Yaguchi Y, Yamato M, Kojima H. Analysis of human nasal mucosal cell sheets fabricated using transported tissue and blood specimens. Regen Ther 2019; 11:88-94. [PMID: 31304201 PMCID: PMC6603308 DOI: 10.1016/j.reth.2019.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/15/2019] [Accepted: 05/02/2019] [Indexed: 12/13/2022] Open
Abstract
Previously, we succeeded in transplanting autologous nasal mucosal cell sheets in the middle ears of 5 patients, who underwent cholesteatoma resection, which prevents recurrence of cholesteatoma in clinical settings. Current good manufacturing practice (GMP) standards for human cell cultivation requires the establishment of cell processing centers (CPC) which act as germ-free facilities. However, due to practical difficulties involved in establishing and maintaining such facilities at each individual hospital, a functional transport system is felt to be needed for the continuation of effective regenerative therapy. In the current study, nasal mucosal tissue and autologous blood obtained from 3 human volunteers were transported for over 3 h. Disinfected nasal tissues were cultured using keratinocyte culture medium, which included autologous serum prepared from blood. After 24 d, cultured nasal mucosal cells were transported for over 3 h and subsequently assessed for cell number, viability and purity. Moreover, CK4, CK8, and CK18 were analyzed the suitability of these nasal mucosal cell sheets for middle ear regenerative therapy. Overall, we confirmed that nasal mucosal cell sheets can be fabricated using transported nasal mucosal tissue and blood. This study would be contribute to establish a new regenerative therapy for clinical application, accompanied with transportation between companies and hospitals. Transportation of nasal mucosal tissue and blood. Characterizing of nasal mucosal cell sheet by immunohistology. Transportation of nasal mucosal cell sheet as pre-clinical study.
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Affiliation(s)
- Yoshiyuki Kasai
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Tsunetaro Morino
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.,Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-Cho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Shun Kikuchi
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Ryoto Mitsuyoshi
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Masahiro Takahashi
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Kazuhisa Yamamoto
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Yuichiro Yaguchi
- Department of Otorhinolaryngology, St. Marianna University School of Medicine, 2-16-1 Sugao Miyamae-ku Kawasaki-shi, Kanagawa, 216-8511, Japan
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-Cho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Hiromi Kojima
- Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan
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