1
|
Taqif H, Adisso L, Gomes Souza L, Dofara SG, Ghio SC, Rivest LP, Légaré F. Changes in intention to use an interprofessional approach to decision-making following training: a cluster before-and-after study. BMC Health Serv Res 2024; 24:437. [PMID: 38589863 PMCID: PMC11000315 DOI: 10.1186/s12913-024-10899-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 03/26/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Health professionals in home care work in interprofessional teams. Yet most training in decision support assumes a one-on-one relationship with patients. We assessed the impact of an in-person training session in interprofessional shared decision-making (IP-SDM) on home care professionals' intention to adopt this approach. METHODS We conducted a secondary analysis of a cluster stepped-wedge trial using a before-and-after study design. We collected data among home care professionals from November 2016 to February 2018 in 9 health and social services centers in Quebec, Canada. The intervention was an in-person IP-SDM training session. Intention to engage in IP-SDM pre- and post-session (dependent variable) was compared using a continuing professional development evaluation scale (CPD-Reaction) informed by the Godin's Integrated Behavioral Model for health professionals. We also assessed socio-demographic and psychosocial variables (beliefs about capabilities, beliefs about consequences, social influence and moral norm). We performed bivariate and multivariate analysis to identify factors influencing post-intervention intention. We used the STROBE reporting guidelines for observational studies to report our results. RESULTS Of 134 respondents who provided complete pairs of questionnaires (pre- and post-), most were female (90.9%), mean age was 42 (± 9.3) years and 66.9% were social workers. Mean intention scores decreased from 5.84 (± 1.19) to 5.54 (± 1.35) (Mean difference = -0.30 ± 1.16; p = 0.02). Factors associated with higher intention post-intervention were social influence (ß = 0.34, p = 0.01) and belief about capabilities (ß = 0.49, p < 0.01). CONCLUSION After in-person IP-SDM training, healthcare professionals' intention to engage in IP-SDM decreased. However, the scope of this decrease is probably not clinically significant. Due to their association with intention, beliefs about capabilities, which translate into having a sense of self-competency in the new clinical behavior, and social influences, which translate into what important others think one should be doing, could be targets for future research aiming to implement IP-SDM in home care settings.
Collapse
Affiliation(s)
- Hajar Taqif
- Department of Mathematics and Statistics, Faculty of Science and Engineering, Université Laval, Quebec City, QC, Canada
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada
| | - Lionel Adisso
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada
- Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Lucas Gomes Souza
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada
- Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Suélène Georgina Dofara
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada
| | - Sergio Cortez Ghio
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada
| | - Louis-Paul Rivest
- Department of Mathematics and Statistics, Faculty of Science and Engineering, Université Laval, Quebec City, QC, Canada
| | - France Légaré
- VITAM - Centre de Recherche en Santé Durable, Centre Intégré Universitaire de Santé Et de Services Sociaux de La Capitale-Nationale, Quebec City, QC, Canada.
- Department of Family Medicine and Emergency Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada.
| |
Collapse
|
2
|
Morin S, Bélanger S, Cortez Ghio S, Pouliot R. Eicosapentaenoic acid reduces the proportion of IL-17A-producing T cells in a 3D psoriatic skin model. J Lipid Res 2023; 64:100428. [PMID: 37597582 PMCID: PMC10509711 DOI: 10.1016/j.jlr.2023.100428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 08/03/2023] [Accepted: 08/11/2023] [Indexed: 08/21/2023] Open
Abstract
Psoriasis is a skin disease presenting as erythematous lesions with accentuated proliferation of epidermal keratinocytes, infiltration of leukocytes, and dysregulated lipid metabolism. T cells play essential roles in the disease. n-3 polyunsaturated fatty acids are anti-inflammatory metabolites, which exert an immunosuppressive effect on healthy T cells. However, the precise mechanistic processes of n-3 polyunsaturated fatty acids on T cells in psoriasis are still unrevealed. In this study, we aimed to evaluate the action of eicosapentaenoic acid (EPA) on T cells in a psoriatic skin model produced with T cells. A coculture of psoriatic keratinocytes and polarized T cells was prepared using culture media, which was either supplemented with 10 μM EPA or left unsupplemented. Healthy and psoriatic skin substitutes were produced according to the self-assembly method. In the coculture model, EPA reduced the proportion of IL-17A-positive cells, while increasing that of FOXP3-positive cells, suggesting an increase in the polarization of regulatory T cells. In the 3D psoriatic skin model, EPA normalized the proliferation of psoriatic keratinocytes and diminished the levels of IL-17A. The expression of the proteins of the signal transducer and activator of transcription was influenced following EPA supplementation with downregulation of the phosphorylation levels of signal transducer and activator of transcription 3 in the dermis. Finally, the NFκB signaling pathway was modified in the EPA-supplemented substitutes with an increase in Fas amounts. Ultimately, our results suggest that in this psoriatic model, EPA exerts its anti-inflammatory action by decreasing the proportion of IL-17A-producing T cells.
Collapse
Affiliation(s)
- Sophie Morin
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada
| | - Sarah Bélanger
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada
| | | | - Roxane Pouliot
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada.
| |
Collapse
|
3
|
Doucet EJ, Cortez Ghio S, Barbier MA, Savard É, Magne B, Safoine M, Larouche D, Fradette J, Germain L. Production of Tissue-Engineered Skin Substitutes for Clinical Applications: Elimination of Serum. Int J Mol Sci 2023; 24:12537. [PMID: 37628718 PMCID: PMC10454817 DOI: 10.3390/ijms241612537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Tissue-engineered skin substitutes (TESs) are used as a treatment for severe burn injuries. Their production requires culturing both keratinocytes and fibroblasts. The methods to grow these cells have evolved over the years, but bovine serum is still commonly used in the culture medium. Because of the drawbacks associated with the use of serum, it would be advantageous to use serum-free media for the production of TESs. In a previous study, we developed a serum-free medium (Surge SFM) for the culture of keratinocytes. Herein, we tested the use of this medium, together with a commercially available serum-free medium for fibroblasts (Prime XV), to produce serum-free TESs. Our results show that serum-free TESs are macroscopically and histologically similar to skin substitutes produced with conventional serum-containing media. TESs produced with either culture media expressed keratin 14, Ki-67, transglutaminase 1, filaggrin, type I and IV collagen, and fibronectin comparably. Mechanical properties, such as contraction and tensile strength, were comparable between TESs cultured with and without serum. Serum-free TESs were also successfully grafted onto athymic mice for a six-month period. In conclusion, Surge SFM and Prime XV serum-free media could be used to produce high quality clinical-grade skin substitutes.
Collapse
Affiliation(s)
- Emilie J. Doucet
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Sergio Cortez Ghio
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Martin A. Barbier
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Étienne Savard
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Brice Magne
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Meryem Safoine
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Danielle Larouche
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Julie Fradette
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| | - Lucie Germain
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Québec, QC G1V 0A6, Canada; (E.J.D.); (S.C.G.); (M.A.B.); (É.S.); (B.M.); (M.S.); (D.L.); (J.F.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1V 0A6, Canada
| |
Collapse
|
4
|
Menear M, Duhoux A, Bédard M, Paquette JS, Baron M, Breton M, Courtemanche S, Dubé S, Dufour S, Fortin M, Girard A, Larouche-Côté É, L'Espérance A, LeBlanc A, Poitras ME, Rivet S, Sasseville M, Achim A, Archambault P, Bajurny V, Brown JB, Carrier JD, Côté N, Couturier Y, Dogba MJ, Gagnon MP, Ghio SC, Marshall EG, Kothari A, Lussier MT, Mair FS, Smith S, Vachon B, Wong S. Understanding the impacts of the COVID-19 pandemic on the care experiences of people with mental-physical multimorbidity: protocol for a mixed methods study. BMC Prim Care 2023; 24:154. [PMID: 37488515 PMCID: PMC10364355 DOI: 10.1186/s12875-023-02106-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 07/06/2023] [Indexed: 07/26/2023]
Abstract
BACKGROUND Primary care and other health services have been disrupted during the COVID-19 pandemic, yet the consequences of these service disruptions on patients' care experiences remain largely unstudied. People with mental-physical multimorbidity are vulnerable to the effects of the pandemic, and to sudden service disruptions. It is thus essential to better understand how their care experiences have been impacted by the current pandemic. This study aims to improve understanding of the care experiences of people with mental-physical multimorbidity during the pandemic and identify strategies to enhance these experiences. METHODS We will conduct a mixed-methods study with multi-phase approach involving four distinct phases. Phase 1 will be a qualitative descriptive study in which we interview individuals with mental-physical multimorbidity and health professionals in order to explore the impacts of the pandemic on care experiences, as well as their perspectives on how care can be improved. The results of this phase will inform the design of study phases 2 and 3. Phase 2 will involve journey mapping exercises with a sub-group of participants with mental-physical multimorbidity to visually map out their care interactions and experiences over time and the critical moments that shaped their experiences. Phase 3 will involve an online, cross-sectional survey of care experiences administered to a larger group of people with mental disorders and/or chronic physical conditions. In phase 4, deliberative dialogues will be held with key partners to discuss and plan strategies for improving the delivery of care to people with mental-physical multimorbidity. Pre-dialogue workshops will enable us to synthesize an prepare the results from the previous three study phases. DISCUSSION Our study results will generate much needed evidence of the positive and negative impacts of the COVID-19 pandemic on the care experiences of people with mental-physical multimorbidity and shed light on strategies that could improve care quality and experiences.
Collapse
Affiliation(s)
- Matthew Menear
- Department of Family Medicine and Emergency Medicine, Université Laval, Quebec City, Canada.
- VITAM Centre de recherche en santé durable, Quebec City, Canada.
| | - Arnaud Duhoux
- Faculty of Nursing, Université de Montréal, Montreal, Canada
- Centre de Recherche Charles-Le Moyne, Montreal, Canada
| | - Myreille Bédard
- Person With Lived Experience (Patient Partner), Montreal, Canada
| | - Jean-Sébastien Paquette
- Department of Family Medicine and Emergency Medicine, Université Laval, Quebec City, Canada
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Marie Baron
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Mylaine Breton
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | | | - Savannah Dubé
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Stefany Dufour
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Martin Fortin
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Ariane Girard
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | | | | | - Annie LeBlanc
- Department of Family Medicine and Emergency Medicine, Université Laval, Quebec City, Canada
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Marie-Eve Poitras
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Sophie Rivet
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Maxime Sasseville
- VITAM Centre de recherche en santé durable, Quebec City, Canada
- Faculty of Nursing, Université Laval, Quebec, Canada
| | - Amélie Achim
- VITAM Centre de recherche en santé durable, Quebec City, Canada
- Department of Psychiatry, Université Laval, Quebec, Canada
| | - Patrick Archambault
- Department of Family Medicine and Emergency Medicine, Université Laval, Quebec City, Canada
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Virtue Bajurny
- Person with Lived Experience (Patient Partner), Toronto, Canada
| | | | - Jean-Daniel Carrier
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Nancy Côté
- VITAM Centre de recherche en santé durable, Quebec City, Canada
- Faculty of Social Sciences, Université Laval, Quebec, Canada
| | - Yves Couturier
- School of Social Work, Université de Sherbrooke, Sherbrooke, Canada
| | - Maman Joyce Dogba
- Department of Family Medicine and Emergency Medicine, Université Laval, Quebec City, Canada
- VITAM Centre de recherche en santé durable, Quebec City, Canada
| | - Marie-Pierre Gagnon
- VITAM Centre de recherche en santé durable, Quebec City, Canada
- Faculty of Nursing, Université Laval, Quebec, Canada
| | | | | | - Anita Kothari
- Department of Health Studies, Western University, London, Canada
| | - Marie-Thérèse Lussier
- Department of Family Medicine and Emergency Medicine, Université de Montréal, Montreal, Canada
| | - Frances S Mair
- School of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Susan Smith
- Department of General Practice, Royal College of Surgeons in Ireland, Dublin, UK
| | - Brigitte Vachon
- School of Rehabilitation, Université de Montréal, Montreal, Canada
| | - Sabrina Wong
- Faculty of Applied Science, University of British Colombia, Vancouver, Canada
| |
Collapse
|
5
|
Côté N, Frikha Y, Freeman A, Cortez Ghio S, Laberge M, Isabelle M, Duhoux A, Denis JL, Jean E, Binette S. Evaluation of an interprofessional primary healthcare team as a new model of primary care in Quebec: a protocol for a type 2 effectiveness-implementation hybrid study. BMJ Open 2023; 13:e072006. [PMID: 37253499 DOI: 10.1136/bmjopen-2023-072006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
INTRODUCTION One family medicine group (FMG) in Quebec has commenced a 5-year pilot project, which is herein referred to as the Archimède model, to implement a patient-centred model based on interprofessional care and the optimal use of healthcare providers' practice scopes. A research project will be conducted to: (1) assess this model's effect on the FMG's operational performance, and its users' resource utilisation at the public health system level; (2) investigate its optimisation with respect to professional roles, interprofessional teamwork and patient-centredness and (3) document users' experience with the model. The aim of this article is to describe the protocol that will be used for this research. METHODS AND ANALYSIS A hybrid implementation approach (type 2 model) will be used. We will collect both quantitative and qualitative data. Regarding the quantitative dimension, and because this is a single-unit intervention study, we will use either or both synthetic control methods and one-sample generalised linear models for analyses at the FMG level. To evaluate the broader impact of Archimède on the public health system, we will use mixed-effects models and propensity score matching methods. Regarding the qualitative research dimension, using an interpretative descriptive approach, we will document users' experience and identify the factors that optimise professional scopes of practice, collaborative practices and patient-centredness. We will conduct individual in-depth semistructured interviews with healthcare providers, administrative staff, stakeholders involved in the Archimède model implementation and patients. ETHICS AND DISSEMINATION This study was approved by the Ethics Committee of the Sectoral Research in Population Health and Primary Care of the Centre intégré universitaire de santé et de services sociaux de la Capitale-Nationale (#2019-1503). The results of the investigation will be presented to the stakeholders involved in the advisory committees and at several scientific conferences. Manuscripts will be submitted to peer-reviewed journals.
Collapse
Affiliation(s)
- Nancy Côté
- Sociology (Faculty of Social Sciences), Université Laval, Québec, Québec, Canada
- VITAM Research Centre on Sustainable Health, Québec, Québec, Canada
| | - Yasmine Frikha
- VITAM Research Centre on Sustainable Health, Québec, Québec, Canada
- Faculty of graduate and postdoctoral studies, Université Laval, Québec, Québec, Canada
| | - Andrew Freeman
- VITAM Research Centre on Sustainable Health, Québec, Québec, Canada
- Rehabilitation (Faculty of Medicine), Université Laval, Québec, Québec, Canada
| | - Sergio Cortez Ghio
- Research Support Department, Ex Machina Biostats, Québec, Québec, Canada
| | - Maude Laberge
- VITAM Research Centre on Sustainable Health, Québec, Québec, Canada
- Department of Social and Preventive Medicine (Faculty of Medicine), Université Laval, Québec, Québec, Québec
- Centre de recherche du CHU de Québec-Université Laval, Québec, Québec, Canada
| | - Maripier Isabelle
- Department of Economics (Faculty of Social Sciences), Université Laval, Québec, Québec, Canada
| | - Arnaud Duhoux
- Faculty of Nursing Sciences, Université de Montréal, Montréal, Québec, Canada
| | - Jean-Louis Denis
- Department of Health Management, Evaluation and Policy (School of Pubic Health), Université de Montréal-CRCHUM-CRDP, Montréal, Québec, Canada
| | | | | |
Collapse
|
6
|
Santerre K, Cortez Ghio S, Proulx S. TGF-β-Mediated Modulation of Cell-Cell Interactions in Postconfluent Maturing Corneal Endothelial Cells. Invest Ophthalmol Vis Sci 2022; 63:3. [PMID: 36194422 PMCID: PMC9547359 DOI: 10.1167/iovs.63.11.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Purpose Transforming growth factor-beta (TGF-β) is known to influence many cell functions. In the corneal endothelium, TGF-β1 exerts contextual effects, promoting endothelial–mesenchymal transition in proliferating cells and enhancing barrier integrity in early confluent maturing cells. Herein, we studied how TGF-β isoforms participate in the formation of corneal endothelial intercellular junctions. Methods Corneal endothelial cells (CECs) were cultured using a two-phase media approach. When CECs reached confluence, the proliferation medium was replaced with maturation medium, which was supplemented or not with TGF-β isoforms. The cell morphology (circularity index), intercellular junction protein expression, trans-endothelial electrical resistance (TEER), and permeability of 7-day postconfluent CECs were assessed. Gene transcription and signaling pathways that were activated following maturation in the presence of TGF-β2 were also studied. The beneficial effect of TGF-β2 on CEC maturation was evaluated using ex vivo corneas mounted on a corneal bioreactor. Results The results showed increases in circularity index, membrane localization of junction-related proteins, and TEER when TGF-β isoforms were individually added during the maturation phase, and TGF-β2 was the most effective isoform. Gene profiling revealed an increase in extracellular matrix-related gene expression. In ex vivo cell adhesion experiments, CECs that were matured in the presence of TGF-β2 had a higher circularity index and cell density and exhibited cell membrane-localized junction-related protein expression at earlier time points. Conclusions These results suggest that TGF-β2 can strengthen cell–cell and cell–substrate adhesion, which accelerates barrier integrity establishment and thus enhances CEC functionality.
Collapse
Affiliation(s)
- Kim Santerre
- Centre de recherche du Centre hospitalier universitaire (CHU) de Québec-Université Laval, axe médecine régénératrice, Hôpital du Saint-Sacrement, Québec, Québec, Canada.,Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada.,Département d'Ophtalmologie et d'oto-rhino-laryngologie-chirurgie cervico-faciale, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Sergio Cortez Ghio
- Centre de recherche du Centre hospitalier universitaire (CHU) de Québec-Université Laval, axe médecine régénératrice, Hôpital du Saint-Sacrement, Québec, Québec, Canada.,Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada
| | - Stéphanie Proulx
- Centre de recherche du Centre hospitalier universitaire (CHU) de Québec-Université Laval, axe médecine régénératrice, Hôpital du Saint-Sacrement, Québec, Québec, Canada.,Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Québec, Canada.,Département d'Ophtalmologie et d'oto-rhino-laryngologie-chirurgie cervico-faciale, Faculté de médecine, Université Laval, Québec, Québec, Canada
| |
Collapse
|
7
|
Le-Bel G, Desjardins P, Gross C, Cortez Ghio S, Couture C, Germain L, Guérin SL. Influence of the Postmortem/Storage Time of Human Corneas on the Properties of Cultured Limbal Epithelial Cells. Cells 2022; 11:cells11172716. [PMID: 36078126 PMCID: PMC9455001 DOI: 10.3390/cells11172716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/25/2022] Open
Abstract
Besides being a powerful model to study the mechanisms of corneal wound healing, tissue-engineered human corneas (hTECs) are sparking interest as suitable substitutes for grafting purposes. To ensure the histological and physiological integrity of hTECs, the primary cultures generated from human cornea (identified as human limbal epithelial cells (hLECs) that are used to produce them must be of the highest possible quality. The goal of the present study consisted in evaluating the impact of the postmortem/storage time (PM/ST) on their properties in culture. hLECs were isolated from the entire cornea comprising the limbus and central cornea. When grown as monolayers, short PM/ST hLECs displayed increased daily doublings and generated more colonies per seeded cells than long PM/ST hLECs. Moreover, hLECs with a short PM/ST exhibited a markedly faster wound closure kinetic both in scratch wound assays and hTECs. Collectively, these results suggest that short PM/ST hLECs have a greater number of highly proliferative stem cells, exhibit a faster and more efficient wound healing response in vitro, and produce hTECs of a higher quality, making them the best candidates to produce biomaterial substitutes for clinical studies.
Collapse
Affiliation(s)
- Gaëtan Le-Bel
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Pascale Desjardins
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Christelle Gross
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Sergio Cortez Ghio
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Camille Couture
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Lucie Germain
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Sylvain L. Guérin
- Centre de Recherche en Organogénèse Expérimentale de l’Université Laval/LOEX, and Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC G1S 4L8, Canada
- Département d’Ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-682-7565
| |
Collapse
|
8
|
Roy V, Ross JP, Pépin R, Cortez Ghio S, Brodeur A, Touzel Deschênes L, Le-Bel G, Phillips DE, Milot G, Dion PA, Guérin S, Germain L, Berthod F, Auger FA, Rouleau GA, Dupré N, Gros-Louis F. Moyamoya Disease Susceptibility Gene RNF213 Regulates Endothelial Barrier Function. Stroke 2022; 53:1263-1275. [PMID: 34991336 DOI: 10.1161/strokeaha.120.032691] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Variants in the ring finger protein 213 (RNF213) gene are known to be associated with increased predisposition to cerebrovascular diseases development. Genomic studies have identified RNF213 as a major risk factor of Moyamoya disease in East Asian descendants. However, little is known about the RNF213 (ring finger protein 213) biological functions or its associated pathogenic mechanisms underlying Moyamoya disease. METHODS To investigate RNF213 loss-of-function effect in endothelial cell, stable RNF213-deficient human cerebral endothelial cells were generated using the CRISPR-Cas9 genome editing technology. RESULTS In vitro assays, using RNF213 knockout brain endothelial cells, showed clear morphological changes and increased blood-brain barrier permeability. Downregulation and delocalization of essential interendothelial junction proteins involved in the blood-brain barrier maintenance, such as PECAM-1 (platelet endothelial cell adhesion molecule-1), was also observed. Brain endothelial RNF213-deficient cells also showed an abnormal potential to transmigration of leukocytes and secreted high amounts of proinflammatory cytokines. CONCLUSIONS Taken together, these results indicate that RNF213 could be a key regulator of cerebral endothelium integrity, whose disruption could be an early pathological mechanism leading to Moyamoya disease. This study also further reinforces the importance of blood-brain barrier integrity in the development of Moyamoya disease and other RNF213-associated diseases.
Collapse
Affiliation(s)
- Vincent Roy
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Jay P Ross
- McGill University, Montréal, Québec, Canada (J.P.R., D.E.P., P.A.D., G.A.R.)
| | - Rémy Pépin
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Sergio Cortez Ghio
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Alyssa Brodeur
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Lydia Touzel Deschênes
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Gaëtan Le-Bel
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Daniel E Phillips
- McGill University, Montréal, Québec, Canada (J.P.R., D.E.P., P.A.D., G.A.R.)
| | - Geneviève Milot
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Patrick A Dion
- McGill University, Montréal, Québec, Canada (J.P.R., D.E.P., P.A.D., G.A.R.)
| | - Sylvain Guérin
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Lucie Germain
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - François Berthod
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - François A Auger
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - Guy A Rouleau
- McGill University, Montréal, Québec, Canada (J.P.R., D.E.P., P.A.D., G.A.R.)
| | - Nicolas Dupré
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| | - François Gros-Louis
- CHU de Québec - Université Laval, Canada (V.R., R.P., S.C.G., A.B., L.T.D., G.L.-B., G.M., S.G., L.G., F.B., F.A.A., N.D., F.G.-L.)
| |
Collapse
|
9
|
Cortez Ghio S, Larouche D, Doucet EJ, Germain L. The role of cultured autologous bilayered skin substitutes as epithelial stem cell niches after grafting: A systematic review of clinical studies. Burns Open 2021. [DOI: 10.1016/j.burnso.2021.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
10
|
Le-Bel G, Cortez Ghio S, Guérin LP, Bisson F, Germain L, Guérin SL. Irradiated Human Fibroblasts as a Substitute Feeder Layer to Irradiated Mouse 3T3 for the Culture of Human Corneal Epithelial Cells: Impact on the Stability of the Transcription Factors Sp1 and NFI. Int J Mol Sci 2019; 20:ijms20246296. [PMID: 31847118 PMCID: PMC6940969 DOI: 10.3390/ijms20246296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/03/2019] [Accepted: 12/09/2019] [Indexed: 12/26/2022] Open
Abstract
Because of the worldwide shortage of graftable corneas, alternatives to restore visual impairments, such as the production of a functional human cornea by tissue engineering, have emerged. Self-renewal of the corneal epithelium through the maintenance of a sub-population of corneal stem cells is required to maintain the functionality of such a reconstructed cornea. We previously reported an association between stem cell differentiation and the level to which they express the transcription factors Sp1 and NFI. In this study, we investigated the impact of replacing irradiated 3T3 (i3T3) murine fibroblast feeder cells by irradiated human corneal fibroblasts (iHFL) on the expression of Sp1 and NFI and evaluated their contribution to the proliferative properties of human corneal epithelial cells (hCECs) in both monolayer cultures and human tissue engineered corneas (hTECs). hCECs co-cultured with iHFL could be maintained for up to two more passages than when they were grown with i3T3. Western Blot and electrophoretic mobility shift assays (EMSAs) revealed no significant difference in the feeder-layer dependent increase in Sp1 at both the protein and DNA binding level, respectively, between HCECs grown with either i3T3 or iHFL. On the other hand, a significant increase in the expression and DNA binding of NFI was observed at each subsequent passage when hCECs were co-cultured along with i3T3. These changes were found to result from an increased expression of the NFIA and NFIB isoforms in hCECs grown with i3T3. Exposure of hCECs to cycloheximide revealed an increased stability of NFIB that likely resulted from post-translational glycosylation of this protein when these cells were co-cultured with i3T3. In addition, iHFL were as efficient as i3T3 at preserving corneal, slow-cycling, epithelial stem cells in the basal epithelium of the reconstructed hTECs. Furthermore, we observed an increased expression of genes whose encoded products promote hCECs differentiation along several passages in hCECs co-cultured with either type of feeder layer. Therefore, the iHFL feeder layer appears to be the most effective at maintaining the proliferative properties of hCECs in culture most likely by preserving high levels of Sp1 and low levels of NFIB, which is known for its gene repressor and cell differentiation properties.
Collapse
Affiliation(s)
- Gaëtan Le-Bel
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de recherche FRQS du CHU de Québec, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Département de Chirurgie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Sergio Cortez Ghio
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Département de Chirurgie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Louis-Philippe Guérin
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Département d’Ophtalmologie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Francis Bisson
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Département de Chirurgie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Lucie Germain
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Département de Chirurgie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Département d’Ophtalmologie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Sylvain L. Guérin
- Centre LOEX de l’Université Laval, Génie Tissulaire et Régénération, Centre de Recherche du CHU de Québec -Université Laval, Axe Médecine Régénératrice, Québec, QC G1V 0A6, Canada; (G.L.-B.); (S.C.G.); (L.-P.G.); (F.B.); (L.G.)
- Centre Universitaire d’Ophtalmologie (CUO)-Recherche, Centre de recherche FRQS du CHU de Québec, Axe Médecine Régénératrice, Québec, QC G1J 1Z4, Canada
- Département d’Ophtalmologie, Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-682-7565
| |
Collapse
|
11
|
Le-Bel G, Cortez Ghio S, Larouche D, Germain L, Guérin SL. Qualitatively Monitoring Binding and Expression of the Transcription Factors Sp1 and NFI as a Useful Tool to Evaluate the Quality of Primary Cultured Epithelial Stem Cells in Tissue Reconstruction. Methods Mol Biol 2019; 1879:43-73. [PMID: 29804261 DOI: 10.1007/7651_2018_153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Electrophoretic mobility shift assays and Western blots are simple, efficient, and rapid methods to study DNA-protein interactions and protein expression, respectively. Primary cultures and subcultures of epithelial cells are widely used for the production of tissue-engineered substitutes and are gaining popularity as a model for gene expression studies. The preservation of stem cells through the culture process is essential to produce high quality substitutes. However, the increase in the number of cell passages is associated with a decrease in their ability to proliferate until senescence is reached. This process is likely to be mediated by the altered expression of nuclear-located transcription factors such as Sp1 and NFI, whose expression has been documented to be required for cell adhesion, migration, and differentiation. In some of our recent studies, we observed a correlation between reconstructed tissues exhibiting poor histological and structural characteristics and a low expression of Sp1 in their constituting epithelial cells. Therefore, monitoring both the expression and DNA binding of these transcription factors in human skin and corneal epithelial cells is a useful tool for characterizing the quality of primary cultured epithelial cells.
Collapse
Affiliation(s)
- Gaëtan Le-Bel
- Centre Universitaire d'Ophtalmologie-Recherche (CUO Recherche), CHU de Québec, Québec (Qc), Canada
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, CHU de Québec-Université Laval Research Center, Québec (Qc), Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec (Qc), Canada
- Department of Ophthalmology, Faculty of Medicine, Université Laval, Québec (Qc), Canada
| | - Sergio Cortez Ghio
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, CHU de Québec-Université Laval Research Center, Québec (Qc), Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec (Qc), Canada
| | - Danielle Larouche
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, CHU de Québec-Université Laval Research Center, Québec (Qc), Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec (Qc), Canada
| | - Lucie Germain
- Centre Universitaire d'Ophtalmologie-Recherche (CUO Recherche), CHU de Québec, Québec (Qc), Canada
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, CHU de Québec-Université Laval Research Center, Québec (Qc), Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec (Qc), Canada
- Department of Ophthalmology, Faculty of Medicine, Université Laval, Québec (Qc), Canada
| | - Sylvain L Guérin
- Centre Universitaire d'Ophtalmologie-Recherche (CUO Recherche), CHU de Québec, Québec (Qc), Canada.
- Department of Ophthalmology, Faculty of Medicine, Université Laval, Québec (Qc), Canada.
| |
Collapse
|
12
|
Cantin-Warren L, Guignard R, Cortez Ghio S, Larouche D, Auger FA, Germain L. Specialized Living Wound Dressing Based on the Self-Assembly Approach of Tissue Engineering. J Funct Biomater 2018; 9:jfb9030053. [PMID: 30223550 PMCID: PMC6165032 DOI: 10.3390/jfb9030053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 12/24/2022] Open
Abstract
There is a high incidence of failure and recurrence for chronic skin wounds following conventional therapies. To promote healing, the use of skin substitutes containing living cells as wound dressings has been proposed. The aim of this study was to produce a scaffold-free cell-based bilayered tissue-engineered skin substitute (TES) containing living fibroblasts and keratinocytes suitable for use as wound dressing, while considering production time, handling effort during the manufacturing process, and stability of the final product. The self-assembly method, which relies on the ability of mesenchymal cells to secrete and organize connective tissue sheet sustaining keratinocyte growth, was used to produce TESs. Three fibroblast-seeding densities were tested to produce tissue sheets. At day 17, keratinocytes were added onto 1 or 3 (reference method) stacked tissue sheets. Four days later, TESs were subjected either to 4, 10, or 17 days of culture at the air–liquid interface (A/L). All resulting TESs were comparable in terms of their histological aspect, protein expression profile and contractile behavior in vitro. However, signs of extracellular matrix (ECM) digestion that progressed over culture time were noted in TESs produced with only one fibroblast-derived tissue sheet. With lower fibroblast density, the ECM of TESs was almost completely digested after 10 days A/L and lost histological integrity after grafting in athymic mice. Increasing the fibroblast seeding density 5 to 10 times solved this problem. We conclude that the proposed method allows for a 25-day production of a living TES, which retains its histological characteristics in vitro for at least two weeks.
Collapse
Affiliation(s)
- Laurence Cantin-Warren
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| | - Rina Guignard
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| | - Sergio Cortez Ghio
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| | - Danielle Larouche
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| | - François A Auger
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| | - Lucie Germain
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Département de Chirurgie, Faculté de Médecine, Université Laval, 1401 18e Rue, Québec, Québec G1J 1Z4, Canada.
| |
Collapse
|
13
|
Cortez Ghio S, Cantin-Warren L, Guignard R, Larouche D, Germain L. Are the Effects of the Cholera Toxin and Isoproterenol on Human Keratinocytes' Proliferative Potential Dependent on Whether They Are Co-Cultured with Human or Murine Fibroblast Feeder Layers? Int J Mol Sci 2018; 19:E2174. [PMID: 30044428 PMCID: PMC6121595 DOI: 10.3390/ijms19082174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 07/18/2018] [Indexed: 12/12/2022] Open
Abstract
Human keratinocyte culture has provided the means to treat burns, wounds and skin pathologies. To date, to efficiently culture keratinocytes, cells are cultured on an irradiated feeder layer (iFL), either comprising human (iHFL) or murine (i3T3FL) fibroblasts, and the culture medium is supplemented with a cyclic adenosine monophosphate (cAMP) accumulation inducing agent such as isoproterenol (ISO) or cholera toxin (CT). Previous studies have characterized how the feeder layer type and the cAMP inducer type influence epithelial cells' phenotype independently from one another, but it is still unknown if an optimal combination of feeder layer and cAMP inducer types exists. We used sophisticated statistical models to search for a synergetic effect of feeder layer and cAMP inducer types on human keratinocytes' proliferative potential. Our data suggests that, when culturing human keratinocytes, using iHFL over i3T3FL increases population doublings and colony-forming efficiency through signaling pathways involving Ak mouse strain thymoma (Akt, also known as protein kinase B) isoforms 1 to 3, signal transducer and activator of transcription 5 (STAT5), p53, and adenosine monophosphate activated protein kinase α1 (AMPKα1). Both tested cAMP inducers ISO and CT yielded comparable outcomes. However, no significant synergy between feeder layer and cAMP inducer types was detected. We conclude that, to promote human keratinocyte growth in the early passages of culture, co-culturing them with a human feeder layer is preferable to a murine feeder layer.
Collapse
Affiliation(s)
- Sergio Cortez Ghio
- Université Laval Research Center on Experimental Organogenesis/LOEX, Québec, QC G1J 1Z4, Canada.
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1J 1Z4, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada.
| | - Laurence Cantin-Warren
- Université Laval Research Center on Experimental Organogenesis/LOEX, Québec, QC G1J 1Z4, Canada.
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1J 1Z4, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada.
| | - Rina Guignard
- Université Laval Research Center on Experimental Organogenesis/LOEX, Québec, QC G1J 1Z4, Canada.
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1J 1Z4, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada.
| | - Danielle Larouche
- Université Laval Research Center on Experimental Organogenesis/LOEX, Québec, QC G1J 1Z4, Canada.
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1J 1Z4, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada.
| | - Lucie Germain
- Université Laval Research Center on Experimental Organogenesis/LOEX, Québec, QC G1J 1Z4, Canada.
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Québec, QC G1J 1Z4, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada.
| |
Collapse
|
14
|
Cortez Ghio S, Boudreau Leblanc A, Audet C, Aubin-Horth N. Effects of maternal stress and cortisol exposure at the egg stage on learning, boldness and neophobia in brook trout. BEHAVIOUR 2016. [DOI: 10.1163/1568539x-00003377] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The environment experienced by females can have long-lasting effects on offspring phenotype. The objective of this study was to determine if maternal stress-induced behaviour reprogramming in offspring is found in brook char and to test whether cortisol is the main mediator, by separating the potential effects of cortisol from that of other potential maternal factors. We exposed female brook trout (Salvelinus fontinalis) to different parallel treatments during the oogenesis period: undisturbed as controls (1) fed cortisol through food (2) or physically stressed by handling once a week (3). Additionally, we exposed half of the control eggs to a cortisol suspension before fertilisation (4). Cortisol consumption and handling did not elevate either maternal plasma or egg cortisol, although egg cortisol level was significantly increased when eggs were bathed in the suspension. We measured spatial learning and memory, boldness and neophobia in 6 month-old offspring and found no effects of treatments on learning, memory or behaviour. Our results suggest that the relationship between maternal stress, circulating and egg cortisol levels, other maternal factors, and behavioural reprogramming is context and species-specific.
Collapse
Affiliation(s)
- Sergio Cortez Ghio
- Département de Biologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Québec, Canada G1V 0A6
| | - Antoine Boudreau Leblanc
- Département de Biologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Québec, Canada G1V 0A6
| | - Céline Audet
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, Rimouski, Québec, Canada G5L 2Z9
| | - Nadia Aubin-Horth
- Département de Biologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Québec, Canada G1V 0A6
| |
Collapse
|
15
|
Abstract
Despite wide variation in the complexity of social interactions across taxa, the basic behavioral components of sociality appear to be modulated by conserved hormone pathways. Specifically, the nonapeptide hormones oxytocin and vasopressin and their receptors have been implicated in regulating diverse social behaviors across vertebrates. Here, we took advantage of the repeated evolution of cooperative breeding in African cichlids to investigate whether there are consistent brain gene expression patterns of isotocin and arginine vasotocin (teleost homologues of oxytocin and vasopressin), as well as their receptors, between four closely related pairs of social (cooperative) and non-social (non-cooperative) species. We first found that the coding sequences for the five genes studied were highly conserved across the eight species. This is the first study to examine the expression of both isotocin receptors, and so we performed a phylogenetic analysis that suggests that these two isotocin receptors are paralogues that arose during the teleost genome duplication. When we then examined brain gene expression patterns relative to social system, we found that there were whole-brain gene expression differences between the social and non-social species in many of the species pairs. However, these relationships varied in both the direction and magnitude among the four species pairs. In conclusion, our results suggest high sequence conservation and species-specific gene expression patterns relative to social behavior for these candidate hormone pathways in the cichlid fishes.
Collapse
Affiliation(s)
- Constance M O'Connor
- Aquatic Behavioural Ecology Lab, Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
| | - Susan E Marsh-Rollo
- Aquatic Behavioural Ecology Lab, Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Sergio Cortez Ghio
- Département de Biologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Sigal Balshine
- Aquatic Behavioural Ecology Lab, Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Nadia Aubin-Horth
- Département de Biologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, Québec G1V 0A6, Canada
| |
Collapse
|