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Daniele E, Ferrari B, Rassu N, Ben-Nun J, Bosio L, Barbaro V, Ferrari S, Ponzin D. Comparison of human amniotic membrane decellularisation approaches for hESC-derived RPE cells culture. BMJ Open Ophthalmol 2022; 7:bmjophth-2022-000981. [PMID: 36161850 PMCID: PMC9454075 DOI: 10.1136/bmjophth-2022-000981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 08/24/2022] [Indexed: 11/12/2022] Open
Abstract
Objective Recent clinical studies have shown that the transplantation of functional retinal pigment epithelium (RPE) cells can prevent the onset of RPE degeneration in age-related macular degeneration. This study aimed to investigate the potential of human amniotic membrane (hAM) as a viable scaffold for the growth and proliferation of pluripotent-derived RPE cells. Methods and analysis Three enzymatic hAM de-epithelialisation methods (thermolysin, trypsin-EDTA and dispase II) were assessed by histological analysis and optical coherence tomography (OCT). We generated RPE cells from a human embryonic stem cell (hESC) line subjected to spontaneous differentiation in feeder-free conditions. The hESC-derived RPE cells were seeded over denuded hAM at a density of 2.0×105 cells/cm2 and maintained in culture for up to 4 weeks. Immnofluorescence was carried out to evaluate the development of a confluent monolayer of RPE cells on the top of the hAM. Conditioned medium was collected to measure pigment epithelium-derived factor (PEDF) concentration by ELISA. Results Laminin α5 and collagen IV staining confirmed the efficiency of the de-epithelialisation process. In particular, thermolysin showed good retention of tissue integrity on OCT images and greater preservation of the hAM basement membrane. The hESC-derived RPE cells formed patches of pigmented cells interspersed along the denuded hAM, but failed to form a regular sheet of RPE cells. These cells expressed typical RPE markers, such as PMEL17 and RPE65, but they secreted low levels of PEDF. Conclusion The biological variability of the hAM could influence the adhesion and the expansion of hESC-derived RPE cells. Further studies are required to verify whether a non-confluent monolayer might represent a limit to transplantation.
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Affiliation(s)
- Elena Daniele
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy .,Venice Eye Bank, Venice, Italy
| | | | - Nicolò Rassu
- Ophthalmic Unit, Ospedale dell'Angelo, Venice, Italy
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Avilla-Royo E, Ochsenbein-Kölble N, Vonzun L, Ehrbar M. Biomaterial-based treatments for the prevention of preterm birth after iatrogenic rupture of the fetal membranes. Biomater Sci 2022; 10:3695-3715. [DOI: 10.1039/d2bm00401a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Minimally invasive interventions to ameliorate or correct fetal abnormalities are becoming a clinical reality. However, the iatrogenic premature preterm rupture of the fetal membranes (FMs) (iPPROM), which may result in...
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Riedel RN, Pérez-Pérez A, Sánchez-Margalet V, Varone CL, Maymó JL. Stem cells and COVID-19: are the human amniotic cells a new hope for therapies against the SARS-CoV-2 virus? Stem Cell Res Ther 2021; 12:155. [PMID: 33648582 PMCID: PMC7919997 DOI: 10.1186/s13287-021-02216-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 02/09/2021] [Indexed: 02/06/2023] Open
Abstract
A new coronavirus respiratory disease (COVID-19) caused by the SARS-CoV-2 virus, surprised the entire world, producing social, economic, and health problems. The COVID-19 triggers a lung infection with a multiple proinflammatory cytokine storm in severe patients. Without effective and safe treatments, COVID-19 has killed thousands of people, becoming a pandemic. Stem cells have been suggested as a therapy for lung-related diseases. In particular, mesenchymal stem cells (MSCs) have been successfully tested in some clinical trials in patients with COVID-19. The encouraging results positioned MSCs as a possible cell therapy for COVID-19. The amniotic membrane from the human placenta at term is a valuable stem cell source, including human amniotic epithelial cells (hAECs) and human mesenchymal stromal cells (hAMSCs). Interestingly, amnion cells have immunoregulatory, regenerative, and anti-inflammatory properties. Moreover, hAECs and hAMSCs have been used both in preclinical studies and in clinical trials against respiratory diseases. They have reduced the inflammatory response and restored the pulmonary tissue architecture in lung injury in vivo models. Here, we review the existing data about the stem cells use for COVID-19 treatment, including the ongoing clinical trials. We also consider the non-cellular therapies that are being applied. Finally, we discuss the human amniotic membrane cells use in patients who suffer from immune/inflammatory lung diseases and hypothesize their possible use as a successful treatment against COVID-19.
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Affiliation(s)
- Rodrigo N Riedel
- Instituto de Química Biológica (IQUIBICEN), CONICET- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4° piso, 1428, Buenos Aires, Argentina
| | - Antonio Pérez-Pérez
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Avenida Sánchez Pizjuán 4, 41009, Sevilla, España
| | - Víctor Sánchez-Margalet
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Avenida Sánchez Pizjuán 4, 41009, Sevilla, España
| | - Cecilia L Varone
- Instituto de Química Biológica (IQUIBICEN), CONICET- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4° piso, 1428, Buenos Aires, Argentina
| | - Julieta L Maymó
- Instituto de Química Biológica (IQUIBICEN), CONICET- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, 4° piso, 1428, Buenos Aires, Argentina.
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Sohail R, Malik A, Ashraf A, Kanwal S. Successful pregnancy outcome after septum resection and use of amnion graft in patient with high transverse vaginal septum. BMJ Case Rep 2019; 12:12/6/e228769. [PMID: 31208981 DOI: 10.1136/bcr-2018-228769] [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: 11/04/2022] Open
Abstract
A 20-year-old woman recently married presented to the outpatient department of the hospital, with primary amenorrhea and difficulty in having coitus. Her height was 155 cm, breast development was normal for age, and other secondary sexual characters seemed normal. On local examination, external genitalia was normal looking, and there was no vaginal discharge. She had a blind vagina of 2 cm length. The ultrasound showed a normal-sized uterus and ovaries seemingly normal. Hormonal profile comprising serum follicle-stimulating hormone, luteinising hormone, prolactin and thyroid stimulating hormone were all within normal limits. Karyotyping was done, which showed a 46,XX pattern. The patient underwent vaginal surgery during which septum resection was done, and amnion grafting was performed to prevent stricture formation. The patient resumed successful coitus 3 months after surgery. There was no discomfort on coitus. She conceived 7 months later. Following this, the patient delivered a healthy baby boy through caesarean section at term.
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Affiliation(s)
- Rubina Sohail
- Obstetrics and Gynaecology, Services Institute of Medical Sciences, Lahore, Punjab, Pakistan.,Obstetrics and Gynaecology, Hameed Latif Hospital, Lahore, Punjab, Pakistan
| | - Aisha Malik
- Obstetrics and Gynaecology, Hameed Latif Hospital, Lahore, Punjab, Pakistan
| | - Afroze Ashraf
- Obstetrics and Gynaecology, Hameed Latif Hospital, Lahore, Punjab, Pakistan
| | - Shahlla Kanwal
- Obstetrics and Gynaecology, Services Institute of Medical Sciences, Lahore, Punjab, Pakistan
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Engels AC, Joyeux L, Van der Merwe J, Jimenez J, Pranpanus S, Barrett DW, Connon C, Chowdhury TT, David AL, Deprest J. Tissuepatch is biocompatible and seals iatrogenic membrane defects in a rabbit model. Prenat Diagn 2017; 38:99-105. [PMID: 29178347 DOI: 10.1002/pd.5191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 11/09/2017] [Accepted: 11/19/2017] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To evaluate novel sealing techniques for their biocompatibility and sealing capacity of iatrogenic fetal membrane defects in a pregnant rabbit model. METHOD At day 23 of gestation (term = d31), a standardized fetoscopy was performed through a 14G cannula. The resulting fetal membrane defect was closed with condensed collagen, collagen with fibrinogen, Tissuepatch, Duraseal, or a conventional collagen plug (Lyostypt) as reference. At d30, the fetuses were harvested and full thickness fetal membrane samples were analyzed. The study consisted of 2 consecutive parts: (1) biocompatibility testing by fetal survival, apoptosis, and infiltration of polymorphonuclear cells in the membranes and (2) the efficacy to seal fetal membrane defects. RESULTS Three sealants (collagen with fibrinogen, Duraseal, or Lyostypt) were associated with a higher fetal mortality compared to control unmanipulated littermates and hence were excluded from further analysis. Tissuepatch was biocompatible, and amniotic fluid levels were comparable to those of control untouched littermates. Compared to the condensed collagen, Tissuepatch was also easier in surgical handling and induced limited cell proliferation. CONCLUSION Tissuepatch had the best biocompatibility and efficacy in sealing an iatrogenic fetal membrane defect in the pregnant rabbit compared to other readily available sealants.
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Affiliation(s)
- Alexander C Engels
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium.,Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospital Gasthuisberg, Leuven, Belgium
| | - Luc Joyeux
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium
| | - Johannes Van der Merwe
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium.,Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospital Gasthuisberg, Leuven, Belgium
| | - Julio Jimenez
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium.,Department of Obstetrics and Gynecology, Clinica Alemana Santiago, Facultad de Medicina Clinica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Savitree Pranpanus
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium
| | - David W Barrett
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Che Connon
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, UK
| | - Tina T Chowdhury
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Anna L David
- Research Department of Maternal Fetal Medicine, Institute of Women's Health, University College London, London, UK.,Research & Development, NIHR University College London Hospitals Biomedical Research Centre, London, UK
| | - Jan Deprest
- Department of Development and Regeneration, Organ Systems, University Hospital Gasthuisberg, Leuven, Belgium.,Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospital Gasthuisberg, Leuven, Belgium.,Research Department of Maternal Fetal Medicine, Institute of Women's Health, University College London, London, UK
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Farghali HA, AbdElKader NA, Khattab MS, AbuBakr HO. Novel approach to gastric mucosal defect repair using fresh amniotic membrane allograft in dogs (experimental study). Stem Cell Res Ther 2017; 8:235. [PMID: 29047409 PMCID: PMC5648434 DOI: 10.1186/s13287-017-0682-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/22/2017] [Accepted: 09/27/2017] [Indexed: 12/30/2022] Open
Abstract
Background Gastric mucosal defect could result from several causative factors including the use of nonsteroidal anti-inflammatory drugs, Helicobacter pylori infection, gastrointestinal and spinal cord diseases, and neoplasia. This study was performed to achieve a novel simple, inexpensive, and effective surgical technique for the repair of gastric mucosal defect. Methods Six adult male mongrel dogs were divided into two groups (three dogs each). In the control positive group (C + ve), dogs were subjected to surgical induction of gastric mucosal defect and then treated using traditional medicinal treatment for such a condition. In the amniotic membrane (AM) group, dogs were subjected to the same operation and then fresh AM allograft was applied. Clinical, endoscopic, biochemical (serum protein and lipid and pepsin activity in gastric juice), histopathological, and immunohistochemistry evaluations were performed. Results Regarding endoscopic examination, there was no sign of inflammatory reaction around the grafted area in the AM group compared to the C + ve group. The leukocytic infiltration in the gastric ulcer was well detected in the control group and was less observed in the AM group. In the AM group, the concentrations of both protein and lipid profiles were nearly the same as those in serum samples taken preoperatively at zero time, which indicated that the AM grafting acted the same as gastric mucosa. The re-epithelization of the gastric ulcer in the C + ve group was not yet detected at 21 days, while in the AM group it was well observed covering most of the gastric ulcer. AM accelerated the re-epithelization of the gastric ulcer. The fibrous connective tissue and the precursor of collagen (COL IA1) were poorly detected in the gastric ulcer with AM application. Conclusion Using fresh AM allograft for repairing gastric mucosal defect in dogs showed great impact as a novel method to achieve optimum reconstruction of the gastric mucosal architecture and restoration of pre-epithelial, epithelial, and post-epithelial normal gastric mucosal barriers.
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Affiliation(s)
- Haithem A Farghali
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Naglaa A AbdElKader
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Marwa S Khattab
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Huda O AbuBakr
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
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Kivelio A, Ochsenbein-Koelble N, Zimmermann R, Ehrbar M. Engineered cell instructive matrices for fetal membrane healing. Acta Biomater 2015; 15:1-10. [PMID: 25536031 DOI: 10.1016/j.actbio.2014.12.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 11/28/2014] [Accepted: 12/15/2014] [Indexed: 02/02/2023]
Abstract
Iatrogenic preterm prelabour rupture of fetal membranes (iPPROM) occurs in 6-45% of the cases after fetoscopic procedures, posing a significant threat to fetal survival and well-being. The number of diagnostic and therapeutic prenatal interventions available is increasing, thus developing treatment options for iPPROM is becoming more important than ever before. Fetal membranes exhibit very restricted regeneration and little is known about factors which might modulate their healing potential, rendering various materials and strategies to seal or heal fetal membranes pursued over the past decades relatively fruitless. Additionally, biocompatible materials with tunable in vivo stability and mechanical and biological properties have not been available. Using poly(ethylene glycol)-based biomimetic matrices, we provide evidence that, upon presentation of appropriate biological cues in three dimensions, mesenchymal progenitor cells from the amnion can be mobilized, induced to proliferate and supported in maintaining their native extracellular matrix production, thus creating a suitable environment for healing to take place. These data suggest that engineering materials with defined mechanical and biochemical properties and the ability to present migration- and proliferation-inducing factors, such as platelet-derived growth factor, basic fibroblast growth factor or epidermal growth factor, could be key in resolving the clinical problem of iPPROM and allowing the field of fetal surgery to move forward.
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Affiliation(s)
- A Kivelio
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland; Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | | | - R Zimmermann
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | - M Ehrbar
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland; Zurich Centre for Integrative Human Physiology, Zurich, Switzerland.
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Gouveia RM, Jones RR, Hamley IW, Connon CJ. The bioactivity of composite Fmoc-RGDS-collagen gels. Biomater Sci 2014; 2:1222-1229. [DOI: 10.1039/c4bm00121d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Collagen type-I gels incorporating self-assembled Fmoc-RGDS during polymerisation become functionalised, providing a scaffold for enhanced cell attachment and survival, and with improved mechanical and structural properties.
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Affiliation(s)
- Ricardo M. Gouveia
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading, UK
| | - Roanne R. Jones
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading, UK
| | - Ian W. Hamley
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading, UK
| | - Che J. Connon
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading, UK
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Xiao X, Pan S, Liu X, Zhu X, Connon CJ, Wu J, Mi S. In vivo study of the biocompatibility of a novel compressed collagen hydrogel scaffold for artificial corneas. J Biomed Mater Res A 2013; 102:1782-7. [PMID: 23813783 DOI: 10.1002/jbm.a.34848] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 06/08/2013] [Accepted: 06/11/2013] [Indexed: 12/13/2022]
Abstract
The experiments were designed to evaluate the biocompatibility of a plastically compressed collagen scaffold (PCCS). The ultrastructure of the PCCS was observed via scanning electron microscopy. Twenty New Zealand white rabbits were randomly divided into experimental and control groups that received corneal pocket transplantation with PCCS and an amniotic membrane, respectively. And the contralateral eye of the implanted rabbit served as the normal group. On the 1st, 7th, 14th, 21st, 30th, 60th, 90th, and 120th postoperative day, the eyes were observed via a slit lamp. On the 120th postoperative day, the rabbit eyes were enucleated to examine the tissue compatibility of the implanted stroma. The PCCS was white and translucent. The scanning electron microscopy results showed that fibers within the PCCS were densely packed and evenly arranged. No edema, inflammation, or neovascularization was observed on ocular surface under a slit lamp and few lymphocytes were observed in the stroma of rabbit cornea after histological study. In conclusion, the PCCS has extremely high biocompatibility and is a promising corneal scaffold for an artificial cornea.
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Affiliation(s)
- Xianghua Xiao
- Shaanxi Institute of Ophthalmology, Xi'an, Shaanxi, 710002, People's Republic of China; Shaanxi Key Laboratory of Eye, Xi'an, Shaanxi, 710002, People's Republic of China; Xi'an First Hospital, Xi'an, Shaanxi, 710002, People's Republic of China
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Jones RR, Hamley IW, Connon CJ. Ex vivo expansion of limbal stem cells is affected by substrate properties. Stem Cell Res 2012; 8:403-9. [DOI: 10.1016/j.scr.2012.01.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 01/05/2012] [Accepted: 01/23/2012] [Indexed: 12/13/2022] Open
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