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Radhakrishna U, Ratnamala U, Jhala DD, Uppala LV, Vedangi A, Saiyed N, Patel M, Shah SR, Rawal RM, Jemec GBE, Mazza T, Mazzoccoli G, Damiani G. Deregulated Long Non-Coding RNAs (lncRNA) as Promising Biomarkers in Hidradenitis Suppurativa. J Clin Med 2024; 13:3016. [PMID: 38792557 PMCID: PMC11121919 DOI: 10.3390/jcm13103016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/14/2024] [Accepted: 04/15/2024] [Indexed: 05/26/2024] Open
Abstract
Background/Objectives: In recent times, epigenetics alterations in Hidradenitis suppurativa (HS) have been explored and exploited translationally to guide investigation of new therapeutic approaches. On the other hand, long noncoding RNAs (LncRNAs), main regulators of the epigenetic status of the human genome, have been scarcely investigated, notwithstanding their potential relevance in broad pathogenesis comprehension. Here, we aim to explore the methylation pattern of lncRNAs in HS. Methods: In this case-control study, 24 HS patients and age-, sex- and BMI-matched controls were analyzed to characterize the methylome of lncRNA genes in peripheral blood cells. Gene ontology analysis (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, protein-protein interaction (PPI) network, and MCODE analysis were performed. Results: A set of fifteen lncRNA genes exhibited significantly differential methylation patterns, with ten of them showing hypomethylation and five displaying hypermethylation at specific CpG sites. The hypomethylated lncRNA genes were DLEU2, MESTIT1, CASC2, TUG1, KCNQ1DN, PSORS1C3, PCA3, DSCR8, RFPL1S, and PVT1, while the hypermethylated ones were HAR1A, FAM66B, SNHG9, HCG9, and HCP5. These lncRNA genes have been linked to various important biological processes, including cell proliferation, apoptosis, inflammation, chronic inflammatory skin diseases, and wound healing. Their altered methylation status suggests potential roles in regulating these processes, and may contribute to HS pathogenesis and healing mechanisms. Conclusions: This study revealed an interesting dysregulation pattern of definite lncRNAs in the methylome which is linked to both the development of HS and its comorbidities. Epigenetically altered lncRNAs genes could represent useful biomarkers, and could help in guiding innovative treatment strategies.
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Affiliation(s)
- Uppala Radhakrishna
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Uppala Ratnamala
- Department of Life Sciences, School of Sciences, Gujarat University, Ahmedabad 380009, India (R.M.R.)
| | - Devendrasinh D. Jhala
- Department of Zoology, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | - Lavanya V. Uppala
- Peter Kiewit Institute, College of Information Science & Technology, The University of Nebraska at Omaha, Omaha, NE 68182, USA
| | - Aaren Vedangi
- Department of Clinical Research, KIMS ICON Hospital, ICON Krishi Institute Medical Sciences, Sheelanagar, Visakhapatnam 530012, India
| | - Nazia Saiyed
- Department of Obstetrics and Gynecology, Corewell Health William Beaumont University Hospital, Royal Oak, MI 48073, USA
| | | | - Sushma R. Shah
- Department of Obstetrics and Gynecology, BJ Medical College Institute of Medical Post-Graduate Studies and Research, Ahmedabad 380016, India
| | - Rakesh M. Rawal
- Department of Life Sciences, School of Sciences, Gujarat University, Ahmedabad 380009, India (R.M.R.)
| | - Gregor B. E. Jemec
- Department of Dermatology, Zealand University Hospital, 4000 Roskilde, Denmark;
| | - Tommaso Mazza
- Bioinformatics Unit, IRCCS “Casa Sollievo della Sofferenza”, Opera di Padre Pio da Pietrelcina, Cappuccini Avenue, 71013 San Giovanni Rotondo, Italy
| | - Gianluigi Mazzoccoli
- Division of Internal Medicine and Chronobiology Laboratory, Department of Medical Sciences, IRCCS “Casa Sollievo della Sofferenza”, Opera di Padre Pio da Pietrelcina, 71013 San Giovanni Rotondo, Italy
| | - Giovanni Damiani
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
- Italian Center of Precision Medicine and Chronic Inflammation, University of Milan, 20122 Milan, Italy
- Fondazione IRCCS Ca’ Granda, Ospedale maggiore Policlinico, 20122 Milan, Italy
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Ji W, Zhang Q, Sun Z, Cheng Y. LncRNA H19 Inhibits Keratinocyte Cell Proliferation and Migration by Targeting miR-17-5p/RUNX1 Axis in Chronic Wounds. J Burn Care Res 2024; 45:366-372. [PMID: 37742288 DOI: 10.1093/jbcr/irad145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Indexed: 09/26/2023]
Abstract
The migration and proliferation of keratinocytes are critical for re-epithelization during chronic wound healing. Runt-related transcription factor 1 (RUNX1) has been indicated to repress keratinocyte proliferation. Nonetheless, the potential molecular mechanism of RUNX1 in regulating keratinocyte proliferation and migration remains unclear. Cell counting kit-8 and wound-healing assays were implemented for examining keratinocyte viability and migration, respectively. Western blotting and real-time quantitative polymerase chain reaction were utilized for quantifying protein and RNA levels. Luciferase reporter assay was employed for verifying the interaction between RUNX1, miR-17-5p, and long noncoding RNA H19. The results showed that RUNX1 depletion promoted keratinocyte proliferation and migration and repressed extracellular matrix degradation. Mechanistically, H19 upregulated RUNX1 expression by competitively absorbing miR-17-5p. Rescue experiments revealed that overexpressing RUNX1 reversed H19 silencing-mediated effects on the phenotypes of keratinocytes. In conclusion, H19 knockdown promotes keratinocyte proliferation and migration and suppresses extracellular matrix degradation via the miR-17-5p/RUNX1 axis.
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Affiliation(s)
- Wei Ji
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Qian Zhang
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Zhibo Sun
- Department of Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yanyang Cheng
- Department of Paediatrics, Renmin Hospital of Wuhan University, Wuhan 430060, China
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3
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Anuradha U, Mehra NK, Khatri DK. Understanding molecular mechanisms and miRNA-based targets in diabetes foot ulcers. Mol Biol Rep 2024; 51:82. [PMID: 38183502 DOI: 10.1007/s11033-023-09074-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/21/2023] [Indexed: 01/08/2024]
Abstract
In today's culture, obesity and overweight are serious issues that have an impact on how quickly diabetes develops and how it causes complications. For the development of more effective therapies, it is crucial to understand the molecular mechanisms underlying the chronic problems of diabetes. The most prominent effects of diabetes are microvascular abnormalities such as retinopathy, nephropathy, and neuropathy, especially diabetes foot ulcers, as well as macrovascular abnormalities such as heart disease and atherosclerosis. MicroRNAs (miRNAs), which are highly conserved endogenous short non-coding RNA molecules, have been implicated in several physiological functions recently, including the earliest stages of the disease. By binding to particular messenger RNAs (mRNAs), which cause mRNA degradation, translation inhibition, or even gene activation, it primarily regulates posttranscriptional gene expression. These molecules exhibit considerable potential as diagnostic biomarkers for disease and are interesting treatment targets. This review will provide an overview of the latest findings on the key functions that miRNAs role in diabetes and its complications, with an emphasis on the various stages of diabetic wound healing.
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Affiliation(s)
- Urati Anuradha
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana, 500037, India
| | - Neelesh Kumar Mehra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana , 500037, India.
| | - Dharmendra Kumar Khatri
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana, 500037, India.
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4
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Alsadi N, Yasavoli-Sharahi H, Mueller R, Cuenin C, Chung F, Herceg Z, Matar C. Protective Mechanisms of Polyphenol-Enriched Blueberry Preparation in Preventing Inflammation in the Skin against UVB-Induced Damage in an Animal Model. Antioxidants (Basel) 2023; 13:25. [PMID: 38275645 PMCID: PMC10812677 DOI: 10.3390/antiox13010025] [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: 11/07/2023] [Revised: 12/08/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
UVB significantly impacts the occurrence of cutaneous disorders, ranging from inflammatory to neoplastic diseases. Polyphenols derived from plants have been found to exhibit photoprotective effects against various factors that contribute to skin cancer. During the fermentation of the polyphenol-enriched blueberry preparation (PEBP), small oligomers of polyphenols were released, thus enhancing their photoprotective effects. This study aimed to investigate the protective effects of PEBP on UVB-induced skin inflammation. Topical preparations of polyphenols were applied to the skin of dorsally shaved mice. Mice were subsequently exposed to UVB and were sacrificed 90 min after UVB exposure. This study revealed that pretreatment with PEBP significantly inhibited UVB-induced recruitment of mast and neutrophil cells and prevented the loss of skin thickness. Furthermore, the findings show that PEBP treatment resulted in the downregulation of miR-210, 146a, and 155 and the upregulation of miR-200c and miR-205 compared to the UVB-irradiated mice. Additionally, PEBP was found to reduce the expression of IL-6, IL-1β, and TNFα, inhibiting COX-2 and increasing IL-10 after UVB exposure. Moreover, DNA methylation analysis indicated that PEBP might potentially reduce the activation of inflammation-related pathways such as MAPK, Wnt, Notch, and PI3K-AKT signaling. Our finding suggests that topical application of PEBP treatment may effectively prevent UVB-induced skin damage by inhibiting inflammation.
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Affiliation(s)
- Nawal Alsadi
- Cellular and Molecular Medicine Department, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (N.A.); (H.Y.-S.)
| | - Hamed Yasavoli-Sharahi
- Cellular and Molecular Medicine Department, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (N.A.); (H.Y.-S.)
| | - Rudolf Mueller
- Pathology and Laboratory Medicine Department, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Cyrille Cuenin
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 25 Av. Tony Garnier, 69007 Lyon, France; (C.C.); (F.C.); (Z.H.)
| | - Felicia Chung
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 25 Av. Tony Garnier, 69007 Lyon, France; (C.C.); (F.C.); (Z.H.)
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, Jalan University, Bandar Sunway, Subang Jaya 47500, Malaysia
| | - Zdenko Herceg
- Epigenomics and Mechanisms Branch, International Agency for Research on Cancer (IARC), 25 Av. Tony Garnier, 69007 Lyon, France; (C.C.); (F.C.); (Z.H.)
| | - Chantal Matar
- Cellular and Molecular Medicine Department, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (N.A.); (H.Y.-S.)
- School of Nutrition, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada
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Pan SC, Lai CH, Vu VT, Vu CA, Huang CJ, Cheng CM, Chen WY. Paper-Based Exosomal MicroRNA-21 Detection for Wound Monitoring: A Proof of Concept and Clinical Validation Trial Study. Int J Mol Sci 2023; 24:9822. [PMID: 37372974 DOI: 10.3390/ijms24129822] [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: 04/28/2023] [Revised: 05/25/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Emerging evidence has shown that microRNAs play pivotal roles in wound healing. MicroRNA-21 (miR-21) was previously found to upregulate in order to fulfill an anti-inflammation role for wounds. Exosomal miRNAs have been identified and explored as essential markers for diagnostic medicine. However, the role of exosomal miR-21 in wounds has yet to be well studied. In order to facilitate the early management of poorly healing wounds, we developed an easy-to-use, rapid, paper-based microfluidic-exosomal miR-21 extraction device to determine wound prognosis in a timely manner. We isolated and then quantitatively examined exosomal miR-21 in wound fluids from normal tissues and acute and chronic wounds. Eight improving wounds displayed lower levels of exosomal miR-21 expression after wound debridement. However, four instances of increased exosomal miR-21 expression levels were notably associated with patients with poor healing wounds despite aggressive wound debridement, indicating a predictive role of tissue exosomal miR-21 for wound outcome. Paper-based nucleic acid extraction device provides a rapid and user-friendly approach for evaluating exosomal miR-21 in wound fluids as a means of monitoring wounds. Our data suggest that tissue exosomal miR-21 is a reliable marker for determining current wound status.
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Affiliation(s)
- Shin-Chen Pan
- Department of Surgery, Section of Plastic and Reconstructive Surgery, National Cheng Kung University Hospital, College of Medicine, International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan 704, Taiwan
| | - Chi-Hung Lai
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Van-Truc Vu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Cao-An Vu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Chun-Jen Huang
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Wen-Yih Chen
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
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Azevedo ML, Silveira RG, Nedel F, Lund RG. MicroRNAs expressed during normal wound healing and their associated pathways: A systematic review and bioinformatics analysis. PLoS One 2023; 18:e0281913. [PMID: 37053170 PMCID: PMC10101427 DOI: 10.1371/journal.pone.0281913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 02/04/2023] [Indexed: 04/14/2023] Open
Abstract
MicroRNAs (miRNAs) are responsible for regulating gene expression post-transcriptionally. Are involved in several biological processes, such as wound healing. Understanding the miRNAs involved in this process is fundamental for the development of new therapies. So, due to the need to understand the role of these molecules, we aimed systematically review the literature in order to identify which miRNAs are involved in the wound healing and determine, through bioinformatics analysis, which signaling pathways are associated with these miRNAs. An electronic search was performed in the following databases: National Library of Medicine National Institutes of Health (PubMed), Science Direct, Scifinder, Scopus and Web of Science, using the descriptors: "(microRNA [MeSH])" and "(skin [MeSH])" and "(wound healing [MeSH])". After the search, two independent and previously calibrated reviewers selected the articles that analyzed the expression pattern of miRNAs in wound healing in in vivo studies, using the software Zotero bibliography manager. Following, bioinformatic analysis was performed using the software DIANA Tools, mirPath v.3 and the data was interpreted. The bioinformatics analysis revealed that on the day 1 there were 13 union pathways, eight of which were statistically significant. Still on the day 1, among the miRNAs that had a decrease in their expression, 12 of 17 union pathways found were statistically significant. On the day 5, among the miRNAs with an increase in expression, 16 union pathways were found, 12 of which were statistically significant. Finally, among the miRNAs with decreased expression, 11 of 15 union pathways found were statistically significant. Although it has been found substantial heterogeneity in the studies, with this systematic review, it was possible to study the panorama of miRNAs that may be altered in the wound healing. The present review summarizes existing evidence of miRNAs associated to wound healing, and these findings can contribute to new therapeutic approaches.
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Affiliation(s)
- Morgana Lüdtke Azevedo
- Graduated Program in Biochemistry and Bioprospecting, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Roberta Giorgi Silveira
- Graduated Program in Health and Behavior, Catholic University of Pelotas, Pelotas, RS, Brazil
| | - Fernanda Nedel
- Graduated Program in Health and Behavior, Catholic University of Pelotas, Pelotas, RS, Brazil
| | - Rafael Guerra Lund
- Graduated Program in Biochemistry and Bioprospecting, Federal University of Pelotas, Pelotas, RS, Brazil
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Liu Z, Zhang L, Toma MA, Li D, Bian X, Pastar I, Tomic-Canic M, Sommar P, Xu Landén N. Integrative small and long RNA omics analysis of human healing and nonhealing wounds discovers cooperating microRNAs as therapeutic targets. eLife 2022; 11:80322. [PMID: 35942686 PMCID: PMC9374442 DOI: 10.7554/elife.80322] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/19/2022] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miR), as important epigenetic control factors, reportedly regulate wound repair. However, our insufficient knowledge of clinically relevant miRs hinders their potential therapeutic use. For this, we performed paired small and long RNA-sequencing and integrative omics analysis in human tissue samples, including matched skin and acute wounds collected at each healing stage and chronic nonhealing venous ulcers (VUs). On the basis of the findings, we developed a compendium (https://www.xulandenlab.com/humanwounds-mirna-mrna), which will be an open, comprehensive resource to broadly aid wound healing research. With this first clinical, wound-centric resource of miRs and mRNAs, we identified 17 pathologically relevant miRs that exhibited abnormal VU expression and displayed their targets enriched explicitly in the VU gene signature. Intermeshing regulatory networks controlled by these miRs revealed their high cooperativity in contributing to chronic wound pathology characterized by persistent inflammation and proliferative phase initiation failure. Furthermore, we demonstrated that miR-34a, miR-424, and miR-516, upregulated in VU, cooperatively suppressed keratinocyte migration and growth while promoting inflammatory response. By combining miR expression patterns with their specific target gene expression context, we identified miRs highly relevant to VU pathology. Our study opens the possibility of developing innovative wound treatment that targets pathologically relevant cooperating miRs to attain higher therapeutic efficacy and specificity.
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Affiliation(s)
- Zhuang Liu
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Letian Zhang
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maria A Toma
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Dongqing Li
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences; Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - Xiaowei Bian
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Irena Pastar
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, United States
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, United States
| | - Pehr Sommar
- Department of Plastic and Reconstructive Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Ning Xu Landén
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Ming Wai Lau Centre for Reparative Medicine, Stockholm Node, Karolinska Institute, Stockholm, Sweden
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Abstract
Chronic wounds are characterized by their inability to heal within an expected time frame and have emerged as an increasingly important clinical problem over the past several decades, owing to their increasing incidence and greater recognition of associated morbidity and socio-economic burden. Even up to a few years ago, the management of chronic wounds relied on standards of care that were outdated. However, the approach to these chronic conditions has improved, with better prevention, diagnosis and treatment. Such improvements are due to major advances in understanding of cellular and molecular aspects of basic science, in innovative and technological breakthroughs in treatment modalities from biomedical engineering, and in our ability to conduct well-controlled and reliable clinical research. The evidence-based approaches resulting from these advances have become the new standard of care. At the same time, these improvements are tempered by the recognition that persistent gaps exist in scientific knowledge of impaired healing and the ability of clinicians to reduce morbidity, loss of limb and mortality. Therefore, taking stock of what is known and what is needed to improve understanding of chronic wounds and their associated failure to heal is crucial to ensuring better treatments and outcomes.
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Amjadian S, Moradi S, Mohammadi P. The emerging therapeutic targets for scar management: genetic and epigenetic landscapes. Skin Pharmacol Physiol 2022; 35:247-265. [PMID: 35696989 PMCID: PMC9533440 DOI: 10.1159/000524990] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 04/22/2022] [Indexed: 11/28/2022]
Abstract
Background Wound healing is a complex process including hemostasis, inflammation, proliferation, and remodeling during which an orchestrated array of biological and molecular events occurs to promote skin regeneration. Abnormalities in each step of the wound healing process lead to reparative rather than regenerative responses, thereby driving the formation of cutaneous scar. Patients suffering from scars represent serious health problems such as contractures, functional and esthetic concerns as well as painful, thick, and itchy complications, which generally decrease the quality of life and impose high medical costs. Therefore, therapies reducing cutaneous scarring are necessary to improve patients' rehabilitation. Summary Current approaches to remove scars, including surgical and nonsurgical methods, are not efficient enough, which is in principle due to our limited knowledge about underlying mechanisms of pathological as well as the physiological wound healing process. Thus, therapeutic interventions focused on basic science including genetic and epigenetic knowledge are recently taken into consideration as promising approaches for scar management since they have the potential to provide targeted therapies and improve the conventional treatments as well as present opportunities for combination therapy. In this review, we highlight the recent advances in skin regenerative medicine through genetic and epigenetic approaches to achieve novel insights for the development of safe, efficient, and reproducible therapies and discuss promising approaches for scar management. Key Message Genetic and epigenetic regulatory switches are promising targets for scar management, provided the associated challenges are to be addressed.
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Affiliation(s)
- Sara Amjadian
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Developmental Biology, University of Science and Culture, Tehran, Iran
| | - Sharif Moradi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Parvaneh Mohammadi
- Experimental Medicine and Therapy Research, University of Regensburg, Regensburg, Germany
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- *Parvaneh Mohammadi,
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Kandregula B, Narisepalli S, Chitkara D, Mittal A. Exploration of Lipid-Based Nanocarriers as Drug Delivery Systems in Diabetic Foot Ulcer. Mol Pharm 2022; 19:1977-1998. [PMID: 35481377 DOI: 10.1021/acs.molpharmaceut.1c00970] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diabetes mellitus is a chronic manifestation characterized by high levels of glucose in the blood resulting in several complications including diabetic wounds and ulcers, which predominantly require a longer duration of treatment and adversely affect the quality of life of the patients. Nanotechnology-based therapeutics (both intrinsic and extrinsic types) have emerged as a promising treatment in diabetic foot ulcer/chronic wounds owing to their unique characteristics and specific functional properties. In this review, we have focused on the significance of the use of lipids in the healing of diabetic ulcers, their interaction with the injured skin, and recent trends in lipid-based nanocarriers for the healing of diabetic wounds. Lipid nanocarriers are also being investigated for gene therapy in diabetic wound healing to encapsulate nucleic acids such as siRNA and miRNA, which could silence the expression of inflammatory cytokines overexpressed in chronic wounds. Additionally, these are also being explored for encapsulating proteins, peptides, growth factors, and other biological genetic material as therapeutic agents. Lipid-based nanocarriers encompassing a wide variety of carriers such as liposomes, niosomes, ethosomes, solid lipid nanoparticles, and lipidoid nanoparticles that are explored for the treatment of foot ulcers supplemented with relevant research studies have been discussed in the present review. Lipid-based nanodrug delivery systems have demonstrated promising wound healing potential, particularly in diabetic conditions due to the enhanced efficacy of the entrapped active molecules.
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Affiliation(s)
- Bhaskar Kandregula
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Saibhargav Narisepalli
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Deepak Chitkara
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Anupama Mittal
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India.,Department of Cellular and Molecular Biology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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11
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Lai CH, Lee CL, Vu CA, Vu VT, Tsai YH, Chen WY, Cheng CM. Paper-Based Devices for Capturing Exosomes and Exosomal Nucleic Acids From Biological Samples. Front Bioeng Biotechnol 2022; 10:836082. [PMID: 35497368 PMCID: PMC9039228 DOI: 10.3389/fbioe.2022.836082] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/08/2022] [Indexed: 12/13/2022] Open
Abstract
Exosomes, nanovesicles derived from cells, contain a variety of biomolecules that can be considered biomarkers for disease diagnosis, including microRNAs (miRNAs). Given knowledge and demand, inexpensive, robust, and easy-to-use tools that are compatible with downstream nucleic acid detection should be developed to replace traditional methodologies for point-of-care testing (POCT) applications. This study deploys a paper-based extraction kit for exosome and exosomal miRNA analytical system with some quantifying methods to serve as an easy sample preparation for a possible POCT process. Exosomes concentrated from HCT116 cell cultures were arrested on paper-based immunoaffinity devices, which were produced by immobilizing anti-CD63 antibodies on Whatman filter paper, before being subjected to paper-based silica devices for nucleic acids to be trapped by silica nanoparticles adsorbed onto Whatman filter paper. Concentrations of captured exosomes were quantified by enzyme-linked immunosorbent assay (ELISA), demonstrating that paper-based immunoaffinity devices succeeded in capturing and determining exosome levels from cells cultured in both neutral and acidic microenvironments, whereas microRNA 21 (miR-21), a biomarker for various types of cancers and among the nucleic acids absorbed onto the silica devices, was determined by reverse transcription quantitative polymerase chain reaction (RT-qPCR) to prove that paper-based silica devices were capable of trapping exosomal nucleic acids. The developed paper-based kit and the devised procedure was successfully exploited to isolate exosomes and exosomal nucleic acids from different biological samples (platelet-poor plasma and lesion fluid) as clinical applications.
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Affiliation(s)
- Chi-Hung Lai
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
| | - Chih-Ling Lee
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
| | - Cao-An Vu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
| | - Van-Truc Vu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
| | - Yao-Hung Tsai
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Wen-Yih Chen
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
- *Correspondence: Chao-Min Cheng, ; Wen-Yih Chen,
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- *Correspondence: Chao-Min Cheng, ; Wen-Yih Chen,
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12
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Mojally M, Sharmin E, Alhindi Y, Obaid NA, Almaimani R, Althubiti M, Idris S, Abdelghany AH, Refaat B, Al-Amodi HS, Abdalla AN, Kamel HFM. Hydrogel films of methanolic Mentha piperita extract and silver nanoparticles enhance wound healing in rats with diabetes Type I. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2022. [DOI: 10.1080/16583655.2022.2054607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mariam Mojally
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Eram Sharmin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Yosra Alhindi
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Najla A. Obaid
- Department of Pharmaceutics, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Riyad Almaimani
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohamed Althubiti
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Shakir Idris
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | - Bassem Refaat
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hiba S. Al-Amodi
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ashraf N. Abdalla
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hala F. M. Kamel
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
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13
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Abstract
Chronic skin wounds are commonly found in older individuals who have impaired circulation due to diabetes or are immobilized due to physical disability. Chronic wounds pose a severe burden to the health-care system and are likely to become increasingly prevalent in aging populations. Various treatment approaches exist to help the healing process, although the healed tissue does not generally recapitulate intact skin but rather forms a scar that has inferior mechanical properties and that lacks appendages such as hair or sweat glands. This article describes new experimental avenues for attempting to improve the regenerative response of skin using biophysical techniques as well as biochemical methods, in some cases by trying to harness the potential of stem cells, either endogenous to the host or provided exogenously, to regenerate the skin. These approaches primarily address the local wound environment and should likely be combined with other modalities to address regional and systemic disease, as well as social determinants of health. Expected final online publication date for the Annual Review of Biomedical Engineering, Volume 24 is June 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- François Berthiaume
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA;
| | - Henry C Hsia
- Department of Surgery, Yale University School of Medicine, and Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA
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14
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Li X, Ponandai‐Srinivasan S, Nandakumar KS, Fabre S, Xu Landén N, Mavon A, Khmaladze I. Targeting microRNA for improved skin health. Health Sci Rep 2021; 4:e374. [PMID: 34667882 PMCID: PMC8506131 DOI: 10.1002/hsr2.374] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND In human skin, miRNAs have important regulatory roles and are involved in the development, morphogenesis, and maintenance by influencing cell proliferation, differentiation, immune regulation, and wound healing. MiRNAs have been investigated for many years in various skin disorders such as atopic dermatitis, psoriasis, as well as malignant tumors. Only during recent times, cosmeceutical use of molecules/natural active ingredients to regulate miRNA expression for significant advances in skin health/care product development was recognized. AIM To review miRNAs with the potential to maintain and boost skin health and avoid premature aging by improving barrier function, preventing photoaging, hyperpigmentation, and chronological aging/senescence. METHODS Most of the cited articles were found through literature search on PubMed. The main search criteria was a keyword "skin" in combination with the following words: miRNA, photoaging, UV, barrier, aging, exposome, acne, wound healing, pigmentation, pollution, and senescence. Most of the articles reviewed for relevancy were published during the past 10 years. RESULTS All results are summarized in Figure 1, and they are based on cited references. CONCLUSIONS Thus, regulating miRNAs expression is a promising approach for novel therapy not only for targeting skin diseases but also for cosmeceutical interventions aiming to boost skin health.
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Affiliation(s)
- Xi Li
- Oriflame Cosmetics AB; Skin Research InstituteStockholmSweden
| | - Sakthi Ponandai‐Srinivasan
- Division of Obstetrics and Gynecology, Department of Women's and Children's HealthKarolinska Institute, and Karolinska University HospitalStockholmSweden
| | - Kutty Selva Nandakumar
- Southern Medical University, School of Pharmaceutical SciencesGuangzhouChina
- Medical Inflammation Research, Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmSweden
| | - Susanne Fabre
- Oriflame Cosmetics AB; Skin Research InstituteStockholmSweden
| | - Ning Xu Landén
- Department of Medicine, Solna, Dermatology and Venereology, Centre of Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Alain Mavon
- Oriflame Cosmetics AB; Skin Research InstituteStockholmSweden
| | - Ia Khmaladze
- Oriflame Cosmetics AB; Skin Research InstituteStockholmSweden
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15
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Zhang Z, Gao X, He Y, Kang Y, Jin F, Li Y, Li T, Wei Z, Li S, Cai W, Mao N, Wang S, Liu H, Yang F, Xu H, Yang J. MicroRNA-411-3p inhibits bleomycin-induced skin fibrosis by regulating transforming growth factor-β/Smad ubiquitin regulatory factor-2 signalling. J Cell Mol Med 2021; 25:11290-11299. [PMID: 34783198 PMCID: PMC8650044 DOI: 10.1111/jcmm.17055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/12/2021] [Accepted: 10/26/2021] [Indexed: 12/20/2022] Open
Abstract
Skin fibrosis, which is characterized by fibroblast proliferation and increased extracellular matrix, has no effective treatment. An increasing number of studies have shown that microRNAs (miRNAs/miRs) participate in the mechanism of skin fibrosis, such as in limited cutaneous systemic sclerosis and pathological scarring. The objective of the present study was to determine the role of miR‐411‐3p in bleomycin (BLM)‐induced skin fibrosis and skin fibroblast transformation. Using Western blot analysis and real‐time quantitative polymerase chain reaction assess the expression levels of miR‐411‐3p, collagen (COLI) and transforming growth factor (TGF)‐β/Smad ubiquitin regulatory factor (Smurf)‐2/Smad signalling factors both in vitro and in vivo with or without BLM. To explore the regulatory relationship between miR‐411‐3p and Smurf2, we used the luciferase reporter assay. Furthermore, miR‐411‐3p overexpression was identified in vitro and in vivo via transfection with Lipofectamine 2000 reagent and injection. Finally, we tested the dermal layer of the skin using haematoxylin and eosin and Van Gieson's staining. We found that miR‐411‐3p expression was decreased in bleomycin (BLM)‐induced skin fibrosis and fibroblasts. However, BLM accelerated transforming growth factor (TGF)‐β signalling and collagen production. Overexpression of miR‐411‐3p inhibited the expression of collagen, F‐actin and the TGF‐β/Smad signalling pathway factors in BLM‐induced skin fibrosis and fibroblasts. In addition, miR‐411‐3p inhibited the target Smad ubiquitin regulatory factor (Smurf)‐2. Furthermore, Smurf2 was silenced, which attenuated the expression of collagen via suppression of the TGF‐β/Smad signalling pathway. We demonstrated that miR‐411‐3p exerts antifibrotic effects by inhibiting the TGF‐β/Smad signalling pathway via targeting of Smurf2 in skin fibrosis.
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Affiliation(s)
- Ziyan Zhang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Xuemin Gao
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yang He
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yumeng Kang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Fuyu Jin
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yaqian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Tian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Zhongqiu Wei
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Shifeng Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Wenchen Cai
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Na Mao
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Shan Wang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Heliang Liu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Fang Yang
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Hong Xu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Jie Yang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
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16
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Bibby G, Krasniqi B, Reddy I, Sekar D, Ross K. Capturing the RNA castle: Exploiting MicroRNA inhibition for wound healing. FEBS J 2021; 289:5137-5151. [PMID: 34403569 DOI: 10.1111/febs.16160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/14/2021] [Accepted: 08/16/2021] [Indexed: 02/06/2023]
Abstract
The growing pipelines of RNA-based therapies herald new opportunities to deliver better patient outcomes for complex disorders such as chronic nonhealing wounds associated with diabetes. Members of the microRNA (miRNA) family of small noncoding RNAs have emerged as targets for diverse elements of cutaneous wound repair, and both miRNA enhancement with mimics or inhibition with antisense oligonucleotides represent tractable approaches for miRNA-directed wound healing. In this review, we focus on miRNA inhibition strategies to stimulate skin repair given advances in chemical modifications to enhance the performance of antisense miRNA (anti-miRs). We first explore miRNAs whose inhibition in keratinocytes promotes keratinocyte migration, an essential part of re-epithelialisation during wound repair. We then focus on miRNAs that can be targeted for inhibition in endothelial cells to promote neovascularisation for wound healing in the context of diabetic mouse models. The picture that emerges is that direct comparisons of different anti-miRNAs modifications are required to establish the most translationally viable options in the chronic wound environment, that direct comparisons of the impact of inhibition of different miRNAs are needed to quantify and rank their relative efficacies in promoting wound repair, and that a standardised human ex vivo model of the diabetic wound is needed to reduce reliance on mouse models that do not necessarily enhance mechanistic understanding of miRNA-targeted wound healing.
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Affiliation(s)
- George Bibby
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Blerta Krasniqi
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Izaak Reddy
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Durairaj Sekar
- Dental Research Cell and Biomedical Research Unit (DRC-BRULAC), Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Science (SIMATS), Saveetha University, Chennai, India
| | - Kehinde Ross
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
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17
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Kuai L, Jiang JS, Li W, Li B, Yin SY. Long non-coding RNAs in diabetic wound healing: Current research and clinical relevance. Int Wound J 2021; 19:583-600. [PMID: 34337861 PMCID: PMC8874090 DOI: 10.1111/iwj.13655] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/15/2021] [Accepted: 06/21/2021] [Indexed: 01/23/2023] Open
Abstract
Diabetic wounds are a protracted complication of diabetes mainly characterised by chronic inflammation, obstruction of epithelialization, damaged blood vessels and collagen production (maturation), as well as neuropathy. As a non‐coding RNA (ncRNA) that lack coding potential, long non‐coding RNAs (lncRNAs) have recently been reported to play a salient role in diabetic wound healing. Here, this review summarises the roles of lncRNAs in the pathology and treatments of diabetic wounds, providing references for its potential clinical diagnostic criteria or therapeutic targets in the future.
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Affiliation(s)
- Le Kuai
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing-Si Jiang
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Wei Li
- Center for Translational Medicine, Huaihe Hospital of Henan University, Kaifeng, China
| | - Bin Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Shuang-Yi Yin
- Center for Translational Medicine, Huaihe Hospital of Henan University, Kaifeng, China
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18
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Mesenchymal Stem Cell-Derived Exosomes: Applications in Regenerative Medicine. Cells 2021; 10:cells10081959. [PMID: 34440728 PMCID: PMC8393426 DOI: 10.3390/cells10081959] [Citation(s) in RCA: 178] [Impact Index Per Article: 59.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 12/12/2022] Open
Abstract
Exosomes are a type of extracellular vesicles, produced within multivesicular bodies, that are then released into the extracellular space through a merging of the multivesicular body with the plasma membrane. These vesicles are secreted by almost all cell types to aid in a vast array of cellular functions, including intercellular communication, cell differentiation and proliferation, angiogenesis, stress response, and immune signaling. This ability to contribute to several distinct processes is due to the complexity of exosomes, as they carry a multitude of signaling moieties, including proteins, lipids, cell surface receptors, enzymes, cytokines, transcription factors, and nucleic acids. The favorable biological properties of exosomes including biocompatibility, stability, low toxicity, and proficient exchange of molecular cargos make exosomes prime candidates for tissue engineering and regenerative medicine. Exploring the functions and molecular payloads of exosomes can facilitate tissue regeneration therapies and provide mechanistic insight into paracrine modulation of cellular activities. In this review, we summarize the current knowledge of exosome biogenesis, composition, and isolation methods. We also discuss emerging healing properties of exosomes and exosomal cargos, such as microRNAs, in brain injuries, cardiovascular disease, and COVID-19 amongst others. Overall, this review highlights the burgeoning roles and potential applications of exosomes in regenerative medicine.
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19
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Hsu WJ, Minematsu T, Nakagami G, Koudounas S, Tomida S, Nakai A, Kunimitsu M, Nitta S, Sanada H. Identification of microRNAs responsive to shear loading in rat skin. Int Wound J 2021; 19:351-361. [PMID: 34331398 PMCID: PMC8762574 DOI: 10.1111/iwj.13635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 05/25/2021] [Indexed: 11/28/2022] Open
Abstract
Pressure injuries (PIs) are localised skin injuries that result from pressure with or without shear force. Shear force is more destructive than pressure in clinical settings. Therefore, determining the critical external forces is important for selecting the appropriate care to prevent PIs. To quantitatively distinguish pressure and shear loading with high specificity, we focused on microRNAs (miRs). This study aimed to identify the miRs that are distinguishable between pressure with and without shear loading in rat skin. Microarray analysis identified six candidate miRs from the comparisons among the pressure, shear, and unloaded groups. We analysed the expression levels of the candidate miRs in the process of PI development using real‐time reverse transcriptase polymerase chain reaction. In the pressure and shear groups, miR‐92b expressions at 6 hours after loading were 2.3 ± 1.3 and 2.9 ± 1.0, respectively, which were significantly higher than those in the control group (P = .014 and .004, respectively). miR‐877 expression at 6 hours after loading was significantly increased only in the shear group (2.8 ± 0.9) compared with the control group (P = .016). These results indicate that miR‐92b and miR‐877 are promising biomarkers to determine for which external force healthcare professionals should intervene.
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Affiliation(s)
- Wei-Jhen Hsu
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takeo Minematsu
- Division of Care Innovation, Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Skincare Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Gojiro Nakagami
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Division of Care Innovation, Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sofoklis Koudounas
- Division of Care Innovation, Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sanai Tomida
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ayano Nakai
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mao Kunimitsu
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Shiori Nitta
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiromi Sanada
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Division of Care Innovation, Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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20
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Atashgah RB, Ghasemi A, Raoufi M, Abdollahifar MA, Zanganeh S, Nejadnik H, Abdollahi A, Sharifi S, Lea B, Cuerva M, Akbarzadeh M, Alvarez-Lorenzo C, Ostad SN, Theus AS, LaRock DL, LaRock CN, Serpooshan V, Sarrafi R, Lee KB, Vali H, Schönherr H, Gould L, Taboada P, Mahmoudi M. Restoring Endogenous Repair Mechanisms to Heal Chronic Wounds with a Multifunctional Wound Dressing. Mol Pharm 2021; 18:3171-3180. [PMID: 34279974 DOI: 10.1021/acs.molpharmaceut.1c00400] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Current treatment of chronic wounds has been critically limited by various factors, including bacterial infection, biofilm formation, impaired angiogenesis, and prolonged inflammation. Addressing these challenges, we developed a multifunctional wound dressing-based three-pronged approach for accelerating wound healing. The multifunctional wound dressing, composed of nanofibers, functional nanoparticles, natural biopolymers, and selected protein and peptide, can target multiple endogenous repair mechanisms and represents a promising alternative to current wound healing products.
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Affiliation(s)
- Rahimeh B Atashgah
- Colloids and Polymers Physics Group, Particle Physics Department, Faculty of Physics and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.,Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14167-53955, Iran
| | - Amir Ghasemi
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 13169-43551, Iran
| | - Mohammad Raoufi
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 13169-43551, Iran.,Physical Chemistry I, Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), University of Siegen, Siegen 57076, Germany
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 19395-4719, Iran
| | - Steven Zanganeh
- Department of Bioengineering, University of Massachusetts Dartmouth, Dartmouth, Massachusetts 02747, United States
| | - Hossein Nejadnik
- Department of Radiology, University of Pennsylvania, Philladelphia, Pennsylvania 19104, United States
| | - Alieh Abdollahi
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14167-53955, Iran
| | - Shahriar Sharifi
- Precision Health Program, Michigan State University, East Lansing, Michigan 48824, United States
| | - Baltazar Lea
- Colloids and Polymers Physics Group, Particle Physics Department, Faculty of Physics and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Miguel Cuerva
- NANOMAG Group, Technological Research Institute (IIT), Physical Chemistry Department, University of Santiago de Compostela (USC), Santiago de Compostela 15782, Spain
| | - Mehdi Akbarzadeh
- Sadra Wound, Ostomy and Osteomyelitis Specialist Center, Tehran, Iran
| | - Carmen Alvarez-Lorenzo
- R+D Pharma Group, Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Seyed Nasser Ostad
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14167-53955, Iran
| | - Andrea S Theus
- Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, Georgia 30322, United States
| | - Doris L LaRock
- Department of Microbiology and Immunology, Emory Antibiotic Resistance Center, Emory University School of Medicine, Atlanta, Georgia 30322, United States
| | - Christopher N LaRock
- Department of Microbiology and Immunology, Emory Antibiotic Resistance Center, Emory University School of Medicine, Atlanta, Georgia 30322, United States
| | - Vahid Serpooshan
- Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, Georgia 30322, United States.,Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30309, United States.,Children's Healthcare of Atlanta, Atlanta, Georgia 30322, United States
| | | | - Ki-Bum Lee
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Hojatollah Vali
- Department of Anatomy and Cell Biology and Facility for Electron Microscopy Research, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Holger Schönherr
- Physical Chemistry I, Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), University of Siegen, Siegen 57076, Germany
| | - Lisa Gould
- Brown University School of Medicine, Providence, Rhode Island 02903, United States.,South Shore Health System Center for Wound Healing, Weymouth, Massachusetts 02189, United States
| | - Pablo Taboada
- Colloids and Polymers Physics Group, Particle Physics Department, Faculty of Physics and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Morteza Mahmoudi
- Precision Health Program, Michigan State University, East Lansing, Michigan 48824, United States.,Department of Anesthesiology, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States.,Mary Horrigan Connors Center for Women's Health & Gender Biology, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
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21
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Applications of Nanosized-Lipid-Based Drug Delivery Systems in Wound Care. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11114915] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impaired wound healing is an encumbering public health issue that increases the demand for developing new therapies in order to minimize health costs and enhance treatment efficacy. Available conventional therapies are still unable to maximize their potential in penetrating the skin at the target site and accelerating the healing process. Nanotechnology exhibits an excellent opportunity to enrich currently available medical treatments, enhance standard care and manage wounds. It is a promising approach, able to address issues such as the permeability and bioavailability of drugs with reduced stability or low water solubility. This paper focuses on nanosized-lipid-based drug delivery systems, describing their numerous applications in managing skin wounds. We also highlight the relationship between the physicochemical characteristics of nanosized, lipid-based drug delivery systems and their impact on the wound-healing process. Different types of nanosized-lipid-based drug delivery systems, such as vesicular systems and lipid nanoparticles, demonstrated better applicability and enhanced skin penetration in wound healing therapy compared with conventional treatments. Moreover, an improved chemically and physically stable drug delivery system, with increased drug loading capacity and enhanced bioavailability, has been shown in drugs encapsulated in lipid nanoparticles. Their applications in wound care show potential for overcoming impediments, such as the inadequate bioavailability of active agents with low solubility. Future research in nanosized-lipid-based drug delivery systems will allow the achievement of increased bioavailability and better control of drug release, providing the clinician with more effective therapies for wound care.
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22
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Pastar I, Marjanovic J, Stone RC, Chen V, Burgess JL, Mervis JS, Tomic-Canic M. Epigenetic regulation of cellular functions in wound healing. Exp Dermatol 2021; 30:1073-1089. [PMID: 33690920 DOI: 10.1111/exd.14325] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 02/06/2023]
Abstract
Stringent spatiotemporal regulation of the wound healing process involving multiple cell types is associated with epigenetic mechanisms of gene regulation, such as DNA methylation, histone modification and chromatin remodelling, as well as non-coding RNAs. Here, we discuss the epigenetic changes that occur during wound healing and the rapidly expanding understanding of how these mechanisms affect healing resolution in both acute and chronic wound milieu. We provide a focussed overview of current research into epigenetic regulators that contribute to wound healing by specific cell type. We highlight the role of epigenetic regulators in the molecular pathophysiology of chronic wound conditions. The understanding of how epigenetic regulators can affect cellular functions during normal and impaired wound healing could lead to novel therapeutic approaches, and we outline questions that can provide guidance for future research on epigenetic-based interventions to promote healing. Dissecting the dynamic interplay between cellular subtypes involved in wound healing and epigenetic parameters during barrier repair will deepen our understanding of how to improve healing outcomes in patients affected by chronic non-healing wounds.
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Affiliation(s)
- Irena Pastar
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jelena Marjanovic
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Rivka C Stone
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Vivien Chen
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jamie L Burgess
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Joshua S Mervis
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Marjana Tomic-Canic
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, Wound Healing and Regenerative Medicine Research Program, University of Miami Miller School of Medicine, Miami, FL, USA
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Abstract
In situ hybridization (ISH) and fluorescence in situ hybridization (FISH) techniques enable us to detect the expression of a specific RNA in fixed cells or tissue sections. Here, we describe in detail two procedures adjusted to reveal specifically lncRNAs in normal human keratinocytes and in skin tissue samples. Examples of the results obtained by the two different approaches are also shown.
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Abstract
Wound repair is a fundamental physiological process to keep the integrity of the skin, and its dysregulation results in diseases, such as chronic nonhealing wounds or excessive scarring. To study the underlying cellular and molecular mechanisms and identify new therapeutic targets, animal models are often used in the wound healing research. In this chapter, we describe an easy step-by-step protocol to generate skin wounds in a mouse model. Briefly, two full-thickness wounds extending through the panniculus carnosus are made on the dorsum on each side of the midline of a mouse, which is followed by monitoring and quantifying the wound closure. Moreover, the biopsy tissues of skin and wound-edges are collected at different time points for subsequent histology and gene expression analysis.
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Wei Y, Wang T, Zhang N, Ma Y, Shi S, Zhang R, Zheng X, Zhao L. LncRNA TRHDE-AS1 inhibit the scar fibroblasts proliferation via miR-181a-5p/PTEN axis. J Mol Histol 2021; 52:419-426. [PMID: 33675502 PMCID: PMC8012339 DOI: 10.1007/s10735-021-09968-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 02/23/2021] [Indexed: 11/25/2022]
Abstract
Hypertrophic scar (HS), a fibroproliferative disorder caused by abnormal wound healing after skin injury, which is characterized by excessive deposition of extracellular matrix and invasive growth of fibroblasts. Recent studies have shown that some non-coding RNA implicated the formation of HS, but the mechanism remains unclear. In this study, we found that lncRNA TRHDE-AS1 was downregulated in HS tissues and HSFs, and the level of lncRNA TRHDE-AS1 negatively correlated with the level of miR-181a-5p in HS tissue and HSFs. Overexpressed lncRNA TRHDE-AS1 significantly suppressed miR-181a-5p level, while promoted HSFs apoptosis and inhibited HSFs proliferation. Further study shown that PTEN was a direct target of miR-181a-5p, and lncRNA TRHDE-AS1 served as a molecular sponge for miR-181a-5p to regulate the expression of PTEN. Overexpression of PTEN could eliminate lncRNA TRHDE-AS1-mediated proliferation suppression of HSFs. In conclusion, our study suggested that lncRNA TRHDE-AS1/miR-181a-5p/PTEN axis plays an important role in promoting hypertrophic scar formation, which may be effectively used as a therapeutic target for hypertrophic scar treatment.
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Affiliation(s)
- Yanping Wei
- Department of Dermatology, People's Hospital of Jiaozuo City, Jiaozuo, 454002, China.
| | - Tingting Wang
- Xinxiang Medical University, Xinxiang, 453003, China
| | | | - Yunyun Ma
- Henan Medical College, Zhengzhou, 451191, China
| | - Siji Shi
- Department of Dermatology, People's Hospital of Jiaozuo City, Jiaozuo, 454002, China
| | - Ruxing Zhang
- Department of Neurology, The Fifth People's Hospital of Jiaozuo, Jiaozuo, 454000, China
| | - Xianzhao Zheng
- Department of Neurology, People's Hospital of Jiaozuo City, Jiaozuo, 454002, China
| | - Lindong Zhao
- Department of Dermatology, People's Hospital of Jiaozuo City, Jiaozuo, 454002, China
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Wang QZ, Zhao ZL, Liu C, Zheng JW. Exosome-derived miR-196b-5p facilitates intercellular interaction in infantile hemangioma via down-regulating CDKN1B. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:394. [PMID: 33842615 PMCID: PMC8033367 DOI: 10.21037/atm-20-6456] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background Though infantile hemangioma (IH) is a common benign vascular tumor, its pathogenesis remains unclear. This study explored the function of hemangioma-derived stem cells (HemSCs) derived exosomes, which exerted an intercellular effect on hemangioma-derived endothelial cells (HemECs). Methods First, HemSCs and HemECs were extracted and cultured. HemSCs derived exosomes (HemSCs-exos) were harvested. miRNA sequencing and target prediction were used to explore differentially expressed miRNAs and potential binding targets. After HemECs were co-cultured with HemSCs-exos, a series of in vitro assays were then performed including cell counting kit-8 (CCK-8) assay, cell apoptosis assay, cell cycle assay and tube formation assay to evaluate proliferation, angiogenesis abilities, etc. qRT-PCR and Western blot were conducted to detect the expression level of target genes and proteins. Results After co-culturing with HemSCs-exos, proliferation, and angiogenesis abilities of HemECs were enhanced, while apoptosis and cell cycle arrest rate were decreased. MiR-196b-5p was observed to be significantly highly expressed in HemSCs-exos. CDKN1B was identified as the binding target of miR-196b-5p. HemECs' proliferation and angiogenesis abilities were elevated when co-cultured with exosomes from HemSCs transfected with miR-196b-5p mimic. In addition, apoptosis rate declined, and lower cells were arrested in G0/G1 phases. Cyclin E, bcl-2 were significantly highly expressed, whereas p27, Bax expression were significantly down-regulated. The positive effect of miR-196b-5p in HemSCs-exos was dramatically reversed when HemECs were transfected with oe-CDKN1B. Conclusions The current study found a novel intercellular interaction between IH cells. Briefly, exosome-derived miRNA-196b-5p in HemSCs could facilitate proliferation and angiogenesis abilities, and attenuate apoptosis and cell cycle repression rate of HemECs by directly binding with CDKN1B.
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Affiliation(s)
- Qi-Zhang Wang
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ze-Liang Zhao
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chao Liu
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Wei Zheng
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Tan SH, Ngo ZH, Leavesley D, Liang K. Recent Advances in the Design of Three-Dimensional and Bioprinted Scaffolds for Full-Thickness Wound Healing. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:160-181. [PMID: 33446047 DOI: 10.1089/ten.teb.2020.0339] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Three-dimensional (3D) printed scaffolds have recently emerged as an innovative treatment option for patients with critical-sized skin wounds. Current approaches to managing life-threatening wounds include skin grafting and application of commercially sourced skin substitutes. However, these approaches are not without several challenges. Limited donor tissue and donor site morbidity remain a concern for tissue grafting, while engineered skin substitutes fail to fully recapitulate the complex native environment required for wound healing. The implementation of 3D printed dermal scaffolds offers a potential solution for these shortcomings. Spatial control over scaffold structure, the ability to incorporate multiple materials and bioactive ingredients, enables the creation of conditions specifically optimized for wound healing. Three-dimensional bioprinting, a subset of 3D printing, allows for the replacement of lost cell populations and secreted active compounds that contribute to tissue repair and recovery. The replacement of damaged and lost cells delivers beneficial effects directly, or synergistically, supporting injured tissue to recover its native state. Despite encouraging results, the promise of 3D printed scaffolds has yet to be realized. Further improvements to current material formulations and scaffold designs are required to achieve the goal of clinical adoption. Herein, we provide an overview of 3D printing techniques and discuss several strategies for healing of full-thickness wounds by using 3D printed acellular scaffolds or bioprinted cellular scaffolds, aimed at translating this technology to the clinical management of skin lesions. We identify the challenges associated with designing and optimizing printed tissue replacements, and discuss the future perspectives of this emerging option for managing patients who present with critical-sized life-threatening cutaneous wounds.
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Affiliation(s)
- Shi Hua Tan
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Zong Heng Ngo
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - David Leavesley
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Kun Liang
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
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Human Adipose Mesenchymal Stem Cell-Derived Exosomes: A Key Player in Wound Healing. Tissue Eng Regen Med 2021; 18:537-548. [PMID: 33547566 DOI: 10.1007/s13770-020-00316-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/05/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Human adipose-derived mesenchymal stem cells (AMSCs) are an attractive resource for wound healing because their regenerative capacity improves injury repair. Recently, stem cell-derived exosomes have been shown to play a positive role in stem cell-based therapies. However, the effects of exosomes derived from AMSCs (AEXOs) on wound healing are unclear. In this study, we aimed to examine the role of AEXOs in attenuating inflammation and explore their effects in normal wound healing. METHODS We isolated exosomes from AMSCs and established a cellular model of inflammation by treatment with the inflammatory cytokines, interferon gamma and tumor necrosis factor alpha, to determine whether AEXOs can inhibit inflammation. We examined the wound healing effects of AEXOs in in vitro wound healing models and performed a miRNA array to understand the role of AEXOs in inflammation and wound healing. RESULTS A significant difference was observed in wound closure and the expression of anti-inflammatory and wound-healing-related factors between control and AEXO-treated cells. CONCLUSION Our results showed that besides alleviating the inflammation response, AEXOs also promote wound healing. Thus, AEXOs represent a novel, stem-cell-based, therapeutic strategy for wound healing.
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Piipponen M, Li D, Landén NX. The Immune Functions of Keratinocytes in Skin Wound Healing. Int J Mol Sci 2020; 21:E8790. [PMID: 33233704 PMCID: PMC7699912 DOI: 10.3390/ijms21228790] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
As the most dominant cell type in the skin, keratinocytes play critical roles in wound repair not only as structural cells but also exerting important immune functions. This review focuses on the communications between keratinocytes and immune cells in wound healing, which are mediated by various cytokines, chemokines, and extracellular vesicles. Keratinocytes can also directly interact with T cells via antigen presentation. Moreover, keratinocytes produce antimicrobial peptides that can directly kill the invading pathogens and contribute to wound repair in many aspects. We also reviewed the epigenetic mechanisms known to regulate keratinocyte immune functions, including histone modifications, non-protein-coding RNAs (e.g., microRNAs, and long noncoding RNAs), and chromatin dynamics. Lastly, we summarized the current evidence on the dysregulated immune functions of keratinocytes in chronic nonhealing wounds. Based on their crucial immune functions in skin wound healing, we propose that keratinocytes significantly contribute to the pathogenesis of chronic wound inflammation. We hope this review will trigger an interest in investigating the immune roles of keratinocytes in chronic wound pathology, which may open up new avenues for developing innovative wound treatments.
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Affiliation(s)
| | | | - Ning Xu Landén
- Center for Molecular Medicine, Ming Wai Lau Centre for Reparative Medicine, Department of Medicine Solna, Dermatology and Venereology Division, Karolinska Institute, 17176 Stockholm, Sweden; (M.P.); (D.L.)
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LncRNA MALAT1 promotes wound healing via regulating miR-141-3p/ZNF217 axis. Regen Ther 2020; 15:202-209. [PMID: 33426220 PMCID: PMC7770423 DOI: 10.1016/j.reth.2020.09.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/16/2020] [Accepted: 09/25/2020] [Indexed: 01/22/2023] Open
Abstract
Background The process of wound healing is complex. Increasing evidences have shown that lncRNA MALAT1 is abundant in fibroblasts and may be engaged in wound healing process. Therefore, we explored the mechanism of MALAT1 affecting wound healing. Methods The expression levels of MALAT1, miR-141-3p as well as ZNF217 in human fibroblast cells (HFF-1) were quantified by qRT-PCR. HFF-1 proliferation was measured by MTT, while migration was detected by wound healing assay. SMAD2 activation and matrix proteins expression were detected by western blotting. The interaction between miR-141-3p and MALAT1 or ZNF217 was further confirmed using the luciferase reporter gene assay. In vivo wound healing was assessed by full-thickness wound healing model on C57BL/6 mice. Result Knockdown of MALAT1 as well as overexpression miR-141-3p remarkably inhibited the proliferation, migration and matrix protein expression in HFF-1 cells. MALAT1 directly targeted and inhibited the expression of miR-141-3p. MiR-141-3p suppressed the activation of TGF-β2/SMAD2 signaling pathway by targeting ZNF217. Knockdown of MALAT1 inhibited wound healing process in mice. Conclusions MALAT1 up-regulates ZNF217 expression by targeting miR-141-3p, thus enhances the activity of TGF-β2/SMAD2 signaling pathway and promotes wound healing process. This investigation shed new light on the understanding of the role of MALAT1 in wound healing, and may provide potential target for the diagnosis or therapy of chronic wounds.
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Key Words
- ECM, extra cellular matrix
- ELISA, enzyme linked immunosorbent assay
- EMT, epithelial mesenchymal transition
- HFF-1, human fibroblast cells
- MALAT1
- MALAT1, metastasis-associated lung adenocarcinoma transcript 1
- MTT, 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide
- PVDF, polyvinylidene fluoride
- SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis
- TGF-β2, Transforming Growth Factor-β2
- Wound healing
- ZEB1, E-box binding homeobox 1
- ZNF217
- ZNF217, zinc-finger protein 217
- lncRNA, long non-coding RNA
- miR-141-3p
- qRT-PCR, quantitative real-time PCR
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Li D, Peng H, Qu L, Sommar P, Wang A, Chu T, Li X, Bi X, Liu Q, Gallais Sérézal I, Rollman O, Lohcharoenkal W, Zheng X, Eliasson Angelstig S, Grünler J, Pivarcsi A, Sonkoly E, Catrina SB, Xiao C, Ståhle M, Mi QS, Zhou L, Xu Landén N. miR-19a/b and miR-20a Promote Wound Healing by Regulating the Inflammatory Response of Keratinocytes. J Invest Dermatol 2020; 141:659-671. [PMID: 32949564 DOI: 10.1016/j.jid.2020.06.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/10/2020] [Accepted: 06/29/2020] [Indexed: 12/14/2022]
Abstract
Persistent and impaired inflammation impedes tissue healing and is a characteristic of chronic wounds. A better understanding of the mechanisms controlling wound inflammation is needed. In this study, we show that in human wound-edge keratinocytes, the expressions of microRNA (miR)-17, miR-18a, miR-19a, miR-19b, and miR-20a, which all belong to the miR-17∼92 cluster, are upregulated during wound repair. However, their levels are lower in chronic ulcers than in acute wounds at the proliferative phase. Conditional knockout of miR-17∼92 in keratinocytes as well as injection of miR-19a/b and miR-20a antisense inhibitors into wound edges enhanced inflammation and delayed wound closure in mice. In contrast, conditional overexpression of the miR-17∼92 cluster or miR-19b alone in mice keratinocytes accelerated wound closure in vivo. Mechanistically, miR-19a/b and miR-20a decreased TLR3-mediated NF-κB activation by targeting SHCBP1 and SEMA7A, respectively, reducing the production of inflammatory chemokines and cytokines by keratinocytes. Thus, miR-19a/b and miR-20a being crucial regulators of wound inflammation, the lack thereof may contribute to sustained inflammation and impaired healing in chronic wounds. In line with this, we show that a combinatory treatment with miR-19b and miR-20a improved wound healing in a mouse model of type 2 diabetes.
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Affiliation(s)
- Dongqing Li
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Hongmei Peng
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA; MirnaTech International, LLC, Detroit, Michigan, USA
| | - Le Qu
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Pehr Sommar
- Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Aoxue Wang
- Department of Dermatology, The Second Hospital of Dalian Medical University, Dalian, China
| | - Tongbin Chu
- Department of Wound Repair, The Second Hospital of Dalian Medical University, Dalian, China
| | - Xi Li
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Xinling Bi
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Queping Liu
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Irène Gallais Sérézal
- Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden; Department of Medical Genetics, Hôpital Henri Mondor, APHP, Créteil, France
| | - Ola Rollman
- Department of Dermatology, Academic University Hospital, Uppsala, Sweden
| | - Warangkana Lohcharoenkal
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Xiaowei Zheng
- Department of Molecular Medicine and Surgery, Karolinska University Hospital, Stockholm, Sweden
| | | | - Jacob Grünler
- Department of Molecular Medicine and Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Andor Pivarcsi
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Medical Biochemistry and Microbiology (IMBIM), Uppsala University, Uppsala, Sweden
| | - Enikö Sonkoly
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Sergiu-Bogdan Catrina
- Department of Molecular Medicine and Surgery, Karolinska University Hospital, Stockholm, Sweden; Centrum for Diabetes, Academic Specialist Centrum, Stockholm, Sweden
| | - Changchun Xiao
- Department of Immunology and Microbiology, The Scripps Research Institute, San Diego, California, USA
| | - Mona Ståhle
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - Qing-Sheng Mi
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Li Zhou
- Department of Dermatology, Center for Cutaneous Biology and Immunology Research, Henry Ford Health System, Detroit, Michigan, USA; Immunology Research Program, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, Michigan, USA
| | - Ning Xu Landén
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden; Ming Wai Lau Centre for Reparative Medicine, Stockholm node, Karolinska Institute, Stockholm, Sweden.
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Nie X, Zhao J, Ling H, Deng Y, Li X, He Y. Exploring microRNAs in diabetic chronic cutaneous ulcers: Regulatory mechanisms and therapeutic potential. Br J Pharmacol 2020; 177:4077-4095. [PMID: 32449793 DOI: 10.1111/bph.15139] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/04/2020] [Accepted: 05/07/2020] [Indexed: 12/12/2022] Open
Abstract
Diabetic chronic cutaneous ulcers (DCU) are one of the serious complications of diabetes mellitus, occurring mainly in diabetic patients with peripheral neuropathy. Recent studies have indicated that microRNAs (miRNAs/miRs) and their target genes are essential regulators of cell physiology and pathology including biological processes that are involved in the regulation of diabetes and diabetes-related microvascular complications. in vivo and in vitro models have revealed that the expression of some miRNAs can be regulated in the inflammatory response, cell proliferation, and wound remodelling of DCU. Nevertheless, the potential application of miRNAs to clinical use is still limited. Here, we provide a contemporary overview of the miRNAs as well as their associated target genes and pathways (including Wnt/β-catenin, NF-κB, TGF-β/Smad, and PI3K/AKT/mTOR) related to DCU healing. We also summarize the current development of drugs for DCU treatment and discuss the therapeutic challenges of DCU treatment and its future research directions.
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Affiliation(s)
- Xuqiang Nie
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Zunyi, China.,College of Pharmacy, Zunyi Medical University, Zunyi, China.,Institute of Materia Medica, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Jiufeng Zhao
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Hua Ling
- School of Pharmacy, Georgia Campus - Philadelphia College of Osteopathic Medicine, Suwanee, GA, USA
| | - Youcai Deng
- Institute of Materia Medica, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Xiaohui Li
- Institute of Materia Medica, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Yuqi He
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Zunyi, China.,College of Pharmacy, Zunyi Medical University, Zunyi, China
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Tu L, Huang Q, Hu Y, Liu D. Detection and analysis of angiogenesis pathway‑associated lncRNA expression profiles in human skin fibroblasts under high‑glucose conditions. Mol Med Rep 2020; 22:2283-2290. [PMID: 32705279 PMCID: PMC7411427 DOI: 10.3892/mmr.2020.11333] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 06/22/2020] [Indexed: 12/15/2022] Open
Abstract
Accumulating evidence has indicated that long non‑coding RNAs (lncRNAs) have crucial roles in wound healing and that vascular lesions in diabetic wounds are frequently difficult to heal. However, the role of angiogenesis pathway‑associated lncRNAs in wound healing in diabetic patients has remained to be fully elucidated. In the present study, human skin fibroblasts were cultured under high‑glucose conditions in vitro to mimic a diabetic environment and the angiogenesis pathway‑associated lncRNA expression profile in the high‑ and normal‑glucose groups was examined. The microarray data indicated that 14 lncRNAs and 22 mRNAs were differentially expressed. Several candidate lncRNAs and mRNAs were then analyzed by reverse transcription‑quantitative PCR and the results were consistent with the microarray data. Furthermore, the University of California Santa Cruz Genome Browser was used to identify mRNAs linked to angiogenesis pathways near the transcriptional region of lncRNAs. The results suggested that lncRNAs RP4‑791C19.1 and CTD‑2589O24.1 may act on their target genes epidermal growth factor receptor and p21 (RAC1) activated kinase 1, respectively, as enhancers and cis‑regulate their expression. Therefore, the present study confirmed that several angiogenesis pathway‑associated lncRNAs were differentially expressed under high‑glucose conditions, which may have a key role in wound healing in patients with diabetes.
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Affiliation(s)
- Longxiang Tu
- Department of Burns Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qin Huang
- Department of Nursing, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yanghong Hu
- Department of Nursing, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330006, P.R. China
| | - Dewu Liu
- Department of Burns Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Huang M, Huang X, Jiang B, Zhang P, Guo L, Cui X, Zhou S, Ren L, Zhang M, Zeng J, Huang X, Liang P. linc00174-EZH2-ZNF24/Runx1-VEGFA Regulatory Mechanism Modulates Post-burn Wound Healing. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:824-836. [PMID: 32805486 PMCID: PMC7452087 DOI: 10.1016/j.omtn.2020.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/19/2020] [Accepted: 07/06/2020] [Indexed: 12/17/2022]
Abstract
Preservation of denatured dermis exerts promotive functions in wound healing and improves the appearance and function of skin. Angiogenesis is crucial for wound healing during burn injury. However, the potential molecular mechanism of angiogenesis in the recovery after burn injury remains to be elucidated. Herein, RNA chromatin immunoprecipitation (ChIP) sequencing analysis revealed upregulation of long intergenic non-coding RNA 00174 (linc00174) in the post-burn tissues. linc00174 overexpression promoted angiogenic activities of human umbilical vein endothelial cells (HUVECs) in the heat-denatured cell model, characterized by the promotion of cell proliferation, migration, and tube formation. Mechanistically, linc00174 directly bound to enhancer of zeste homolog 2 (EZH2), thus stimulating the protein level of trimethylation at lysine 27 of histone H3 (H3K27me3). Moreover, inhibition of EZH2 resulted in downregulation of ZNF24 and Runx1, as well as a decline of vascular endothelial growth factor A (VEGFA). Furthermore, EZH2 modulated epigenetic repression of ZNF24 and Runx1 through the promoter of H3K27me3. Additionally, ZNF24 and Runx1 both functioned as transcriptional inhibitors of VEGFA. Taken together, these findings uncover that linc00174 epigenetically inhibits ZNF24 and Runx1 expression through binding to EZH2, thus attenuating the suppression of VEGFA, contributing to the facilitation of angiogenesis during the recovery of heat-denatured endothelial cells.
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Affiliation(s)
- Mitao Huang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Xu Huang
- Department of Hyperbaric Oxygen, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Bimei Jiang
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Pihong Zhang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Le Guo
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Xu Cui
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Situo Zhou
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Licheng Ren
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Minghua Zhang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Jizhang Zeng
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Xiaoyuan Huang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Pengfei Liang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China.
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Shi Y, Yang R, Tu L, Liu D. Long non‑coding RNA HOTAIR promotes burn wound healing by regulating epidermal stem cells. Mol Med Rep 2020; 22:1811-1820. [PMID: 32582996 PMCID: PMC7411415 DOI: 10.3892/mmr.2020.11268] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 05/27/2020] [Indexed: 12/12/2022] Open
Abstract
Local transplantation of epidermal stem cells (ESCs) exerts a therapeutic effect on burn wounds. However, cell viability can impede their clinical application. HOX antisense intergenic RNA (HOTAIR) is involved in regulating adult tissue stem cells, as well as in developmental patterning and pluripotency. However, little is known about its role in regulating ESCs. The present study was performed to investigate the effects of HOTAIR in the modulation of ESCs and wound repair. Firstly, reverse transcription-quantitative PCR was used to detect the relative expression of HOTAIR during burn wound healing in mice to determine whether HOTAIR is associated with wound healing. Subsequently, ESCs derived from mouse skin were transfected with a lentiviral vector to overexpress or knockdown HOTAIR. The effects of HOTAIR on cell proliferation and differentiation were measured by 5-bromodeoxyuridine and MTT assays, and by assessing NANOG mRNA expression. Lastly, mice with burns were administered a subcutaneous injection of HOTAIR-overexpressing ESCs. Images were captured and histological analyses were performed to evaluate wound healing. The results revealed that the expression of HOTAIR gradually increased and peaked at day 7 post-burn and maintained at relatively high levels until day 14 post-burn during wound healing. Furthermore, overexpression of HOTAIR promoted ESC proliferation and maintained the stem cell state in vitro. By contrast, suppression of HOTAIR inhibited cell proliferation and cell stemness. It was also identified that HOTIR-overexpressing ESCs accelerated re-epithelialization and facilitated burn wound repair. In conclusion, the present findings confirmed an essential role of HOTAIR in the regulation of ESC proliferation and stemness. Therefore, targeting HOTAIR in ESCs may be a potentially promising therapy for burn wound healing.
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Affiliation(s)
- Yan Shi
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Ronghua Yang
- Burns Department, The First People's Hospital of Foshan, Foshan, Guangdong 528000, P.R. China
| | - Longxiang Tu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Dewu Liu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Abd-Elmawla MA, Hassan M, Elsabagh YA, Alnaggar ARLR, Senousy MA. Deregulation of long noncoding RNAs ANCR, TINCR, HOTTIP and SPRY4-IT1 in plasma of systemic sclerosis patients: SPRY4-IT1 as a novel biomarker of scleroderma and its subtypes. Cytokine 2020; 133:155124. [PMID: 32442909 DOI: 10.1016/j.cyto.2020.155124] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/05/2020] [Accepted: 05/09/2020] [Indexed: 01/03/2023]
Abstract
Systemic sclerosis or systemic scleroderma (SSc) is an inflammatory autoimmune disease whose pathogenesis remains ambiguous; however, epigenetics, including long noncoding RNAs (lncRNAs) is an emerging paradigm. To date, the expression, role and clinical significance of most lncRNAs in SSc remain unelucidated. Herein, we investigated the plasma expression profiles of lncRNAs; ANCR, TINCR, HOTTIP, and SPRY4-IT1, which were linked to skin biology, in SSc patients and its subtypes, their potential as diagnostic tools and their correlations with autoantibodies and disease manifestations. Sixty-three SSc patients and thirty-five healthy volunteers were recruited. Autoantibody profile (anti-Scl-70, anti-centromere, anti-RNA polymeraseIII, anti-ribonucleoprotein, antinuclear, and anti-phospholipid antibodies) was determined. lncRNAs analysis was conducted using RT-qPCR. Plasma TINCR, HOTTIP, and SPRY4-IT1 upregulation and ANCR downregulation were observed in SSc patients compared with controls. SPRY4-IT1 was superior in SSc diagnosis in ROC analysis and predicted its risk in multivariate logistic analysis. Plasma SPRT4-IT1 was higher in diffuse than limited SSc. SPRY4-IT1 and HOTTIP were positively correlated with modified Rodnan skin score while ANCR showed a negative correlation only in limited SSc. ANCR and TINCR were positively correlated with disease duration and ESR, respectively. ANCR and SPRY4-IT1 were positively correlated with pulmonary hypertension. HOTTIP was positively correlated with antinuclear antibody. SPRY4-IT1 was positively correlated with HOTTIP in the whole group, and with TINCR only in diffuse SSc. We introduce plasma SPRY4-IT1, HOTTIP, ANCR and TINCR as novel candidate biomarkers for SSc, with SPRY4-IT1 could predict SSc diagnosis and discriminate its subtypes. Our findings widen the epigenetic landscape of SSc and provide surrogates for future predictive studies.
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Affiliation(s)
- Mai A Abd-Elmawla
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mariam Hassan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Yumn A Elsabagh
- Department of Rheumatology and Clinical Immunology, Internal Medicine, Kasr Al Ainy, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Alshaimaa Rezk L R Alnaggar
- Department of Rheumatology and Clinical Immunology, Internal Medicine, Kasr Al Ainy, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mahmoud A Senousy
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
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Pammer J, Rossiter H, Bilban M, Eckhart L, Buchberger M, Monschein L, Mildner M. PIWIL-2 and piRNAs are regularly expressed in epithelia of the skin and their expression is related to differentiation. Arch Dermatol Res 2020; 312:705-714. [PMID: 32166374 PMCID: PMC7548280 DOI: 10.1007/s00403-020-02052-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/10/2020] [Accepted: 02/26/2020] [Indexed: 12/29/2022]
Abstract
PIWI proteins play multiple roles in germline stem cell maintenance and self-renewal. PIWI-interacting RNAs (piRNAs) associate with PIWI proteins, form effector complexes and maintain genome integrity and function in the regulation of gene expression by epigenetic modifications. Both are involved in cancer development. In this study, we investigated the expression of PIWIL-2 and piRNAs in normal human skin and epithelial tumors and its regulation during keratinocyte (KC) differentiation. Immunohistochemistry showed that PIWIL-2 was regularly expressed in the epidermis and adnexal tissue with strongest expression in sebaceous glands. Cell culture studies revealed an association of PIWIL-2 expression with the state of differentiated KC. In contrast, the PIWIL-2 expression pattern did not correlate with stem cell compartments or malignancy. piRNAs were consistently detected in KC in vitro by next-generation sequencing and the expression levels of numerous piRNAs were regulated during KC differentiation. Epidermal piRNAs were predominantly derived from processed snoRNAs (C/D-box snoRNAs), tRNAs and protein coding genes. Our data indicate that components of the PIWIL-2-piRNA pathway are present in epithelial cells of the skin and are regulated in the context of KC differentiation, suggesting a role of somatic gene regulation. However, putative roles in the maintenance of stem cell compartments or the development of malignancy in the skin were not supported by this study.
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Affiliation(s)
- Johannes Pammer
- Clinical Institute of Pathology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
| | - Heidi Rossiter
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Martin Bilban
- Department of Laboratory Medicine and Core Facility Genomics, Medical University of Vienna, Vienna, Austria
| | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Maria Buchberger
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Laura Monschein
- Clinical Institute of Pathology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Michael Mildner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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38
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Rong HT, Liu DW. Identification of differentially expressed miRNAs associated with thermal injury in epidermal stem cells based on RNA-sequencing. Exp Ther Med 2020; 19:2218-2228. [PMID: 32104287 PMCID: PMC7027234 DOI: 10.3892/etm.2020.8448] [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: 10/28/2018] [Accepted: 11/06/2019] [Indexed: 12/27/2022] Open
Abstract
Current research indicates that epidermal stem cells (EpSCs) play an important role in promoting wound healing, but the mechanism of action of these cells during wound repair following thermal damage remains unclear. In the present study, the trypsin digestion method was used to isolate human EpSCs and the cells were incubated in a 51.5°C water tank for 35 sec to construct a thermal injury model. The differentially expressed miRNAs were identified using high-throughput sequencing technology, and bioinformatic methods were used to predict their target genes and signaling pathways that may be involved in wound repair. A total of 33 miRNAs including, hsa-miR-1973, hsa-miR-4485-3p, hsa-miR-548-5p, hsa-miR-212-3p and hsa-miR-4461 were upregulated, whereas 21 miRNAs including, hsa-miR-4520-5p, hsa-miR-4661-5p, hsa-miR-191-3p, hsa-miR-129-5p, hsa-miR-147b and hsa-miR-6868-3p were downregulated following thermal injury of the human EpSCs. The bioinformatic analysis indicated that the differentially expressed miRNAs are involved in biological processes such as cell proliferation and differentiation, cell growth apoptosis, cell adhesion and migration. The results showed that there is a differential expression pattern of miRNAs after thermal injury of human EpSCs and these differences are involved in the regulation of the wound healing process. These findings provide new clues for further study of the wound healing mechanism and targeted therapy.
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Affiliation(s)
- Hao-Tian Rong
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.,First Clinical Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - De-Wu Liu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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A Synthetic Curcuminoid Analog, (2 E,6 E)-2,6-bis(2-(trifluoromethyl)benzylidene)cyclohexanone, Ameliorates Impaired Wound Healing in Streptozotocin-Induced Diabetic Mice by Increasing miR-146a. Molecules 2020; 25:molecules25040920. [PMID: 32092902 PMCID: PMC7070912 DOI: 10.3390/molecules25040920] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 02/08/2020] [Accepted: 02/17/2020] [Indexed: 02/07/2023] Open
Abstract
The impairment in diabetic wound healing represents a significant clinical problem, with no efficient targeted treatments for these wound disorders. Curcumin is well confirmed to improve diabetic wound healing, however, its low bioavailability and poor solubility severely limit its clinical application. This study aims to provide the pharmacological basis for the use of (2E,6E)-2,6-bis(2-(trifluoromethyl)benzylidene)cyclohexanone (C66). The results showed that topically applied C66 improved cutaneous wound healing in vivo. Further studies showed that C66 treatment increased the level of microRNA-146a (miR-146a) in the wounds in streptozotocin (STZ)-induced diabetic mice, downregulated the expression of interleukin-1 receptor-associated kinase 1 (IRAK1) and phosphorylated nuclear factor-κB (NF-κB) p65 subunit (p-p65) (both p < 0.05), and suppressed the mRNA expression of inflammation-related cytokines, tumor necrosis factor-α (TNF-α), interleukin-8 (IL-8), and interleukin-6 (IL-6). The in vitro data obtained in human umbilical vein endothelial cells (HUVECs) showed that C66 could reverse high glucose (HG)-induced NF-κB activation due to upregulation of miR-146a expression, which matched the in vivo findings. In conclusion, the present study indicates that C66 exerts anti-inflammation activity and accelerates skin wound healing of diabetic mice, probably via increasing miR-146a and inhibiting the NF-κB-mediated inflammation pathway. Therefore, C66 may be a promising alternative for the treatment of diabetic wounds.
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40
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El Ayadi A, Jay JW, Prasai A. Current Approaches Targeting the Wound Healing Phases to Attenuate Fibrosis and Scarring. Int J Mol Sci 2020; 21:ijms21031105. [PMID: 32046094 PMCID: PMC7037118 DOI: 10.3390/ijms21031105] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/20/2020] [Accepted: 02/04/2020] [Indexed: 02/06/2023] Open
Abstract
Cutaneous fibrosis results from suboptimal wound healing following significant tissue injury such as severe burns, trauma, and major surgeries. Pathologic skin fibrosis results in scars that are disfiguring, limit normal movement, and prevent patient recovery and reintegration into society. While various therapeutic strategies have been used to accelerate wound healing and decrease the incidence of scarring, recent studies have targeted the molecular regulators of each phase of wound healing, including the inflammatory, proliferative, and remodeling phases. Here, we reviewed the most recent literature elucidating molecular pathways that can be targeted to reduce fibrosis with a particular focus on post-burn scarring. Current research targeting inflammatory mediators, the epithelial to mesenchymal transition, and regulators of myofibroblast differentiation shows promising results. However, a multimodal approach addressing all three phases of wound healing may provide the best therapeutic outcome.
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Jiang B, Tang Y, Wang H, Chen C, Yu W, Sun H, Duan M, Lin X, Liang P. Down-regulation of long non-coding RNA HOTAIR promotes angiogenesis via regulating miR-126/SCEL pathways in burn wound healing. Cell Death Dis 2020; 11:61. [PMID: 31974341 PMCID: PMC6978466 DOI: 10.1038/s41419-020-2247-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 01/30/2023]
Abstract
miR-126, an endothelial-specific microRNA, is associated to vascular integrity and angiogenesis. It is well established that angiogenesis plays a critical role in burn wound healing. However, there was a lack of understanding of the mechanism by which miR-126 regulates angiogenesis during burn wound healing. HOX transcript antisense intergenic RNA (HOTAIR) is a well-characterized long non-coding RNA (lncRNA) involved in cell proliferation, apoptosis, migration, and invasion of cancer cells. Sciellin (SCEL), a precursor to the cornified envelope of human keratinocytes, has been shown to inhibit migration and invasion capabilities of colorectal cancer cells. In this study, a cohort of 20 burn wound tissues and paired adjacent normal tissues were collected. LncRNA and messenger RNA expression profiles were screened by microarray analysis in five pairs of samples with mostly increased miR-126 levels. miR-126 was highly expressed in burn wound tissues and human umbilical vein endothelial cells (HUVECs) exposed to heat stress, whereas HOTAIR and SCEL were down-regulated after thermal injury. Bioinformatic analysis, dual luciferase reporter assay, and quantitative real-time PCR were conducted to validate that HOTAIR and SCEL competitively bind to miR-126 to function as the competitive endogenous RNA. miR-126 promoted endothelial cell proliferation, migration, and angiogenesis, but suppressed apoptosis, while HOTAIR and SCEL exerted opposite effects in HUVECs. The biological functions were determined by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, Annexin-V-FITC/PI (propidium iodide/fluorescein isothiocyanate) staining, transwell migration, and tube formation assays. Collectively, our study revealed that HOTAIR/miR-126/SCEL axis contributes to burn wound healing through mediating angiogenesis.
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Affiliation(s)
- Bimei Jiang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yuting Tang
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Hao Wang
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Cheng Chen
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Wenchang Yu
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hui Sun
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Mengting Duan
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaofang Lin
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Sepsis Translational Medicine Key Laboratory of Hunan Province, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Pengfei Liang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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42
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Wang S, Li C, Yu Y, Qiao J. Decreased expression of microRNA-145 promotes the biological functions of fibroblasts in hypertrophic scar tissues by upregulating the expression of transcription factor SOX-9. Exp Ther Med 2019; 18:3450-3460. [PMID: 31602220 PMCID: PMC6777315 DOI: 10.3892/etm.2019.7972] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 12/08/2017] [Indexed: 12/11/2022] Open
Abstract
The present study aimed to determine the expression of microRNA (miRNA or miR)-145 in hypertrophic scars at the tissue and cellular levels, and to investigate its biological functions and mechanism of action. A total of 36 patients who were diagnosed with hypertrophic scar were included in the present study. Reverse transcription-quantitative polymerase chain reaction was used to determine the expression of miR-145 in tissues and fibroblasts. Primary fibroblasts were transfected with negative control miRNA, miR-145 mimics or inhibitor. A Cell Counting Kit-8 assay was performed to determine the level of proliferation of fibroblasts. Flow cytometry was employed for cell cycles determination and apoptosis in fibroblasts. A Matrigel assay was used to evaluate the invasion ability of fibroblasts. Western blotting was used to determine the expression of the transcription factor SOX-9 (SOX-9) protein in fibroblasts. Rescue experiments were performed to examine the effect of SOX-9 on the regulation of fibroblasts by miR-145. The dual luciferase reporter assay was performed to identify the direct interaction between SOX-9 and miR-145. The expression of miR-145 was reduced in hypertrophic tissues and fibroblasts. Overexpression of miR-145 inhibited the proliferation, G1/S phase transition and invasion of fibroblasts, and promoted the apoptosis of fibroblasts. In addition, overexpression of miR-145 inhibited SOX-9 protein expression. By contrast, the expression of SOX-9 reversed the effects of miR-145 on the proliferation, cell cycle, apoptosis and invasion of fibroblasts. The miR-145 seed region was able to bind with the 3′-untranslated region of the SOX-9 mRNA to regulate its expression. The present study demonstrated that miR-145 expression is reduced in hypertrophic scar tissues and negatively associated with SOX-9 expression. In addition, miR-145 inhibits the proliferation, cell cycle and invasion, and promotes the apoptosis of fibroblasts by down-regulating the expression of SOX-9. The current study provides a potential target for the clinical diagnosis and treatment of hypertrophic scars.
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Affiliation(s)
- Shoujie Wang
- Department of Plastic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Caiyun Li
- Department of Plastic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Yijia Yu
- Department of Plastic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jianjun Qiao
- Department of Dermatology, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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43
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Wu J, Li X, Li D, Ren X, Li Y, Herter EK, Qian M, Toma MA, Wintler AM, Sérézal IG, Rollman O, Ståhle M, Wikstrom JD, Ye X, Landén NX. MicroRNA-34 Family Enhances Wound Inflammation by Targeting LGR4. J Invest Dermatol 2019; 140:465-476.e11. [PMID: 31376385 DOI: 10.1016/j.jid.2019.07.694] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/18/2019] [Accepted: 07/16/2019] [Indexed: 12/20/2022]
Abstract
Venous ulcers are the most common type of human chronic nonhealing wounds and are stalled in a constant and excessive inflammatory state. The molecular mechanisms underlying the chronic wound inflammation remain elusive. Moreover, little is known about the role of regulatory RNAs, such as microRNAs, in the pathogenesis of venous ulcers. We found that both microRNA (miR)-34a and miR-34c were upregulated in the wound-edge epidermal keratinocytes of venous ulcers compared with normal wounds or the skin. In keratinocytes, miR-34a and miR-34c promoted inflammatory chemokine and cytokine production. In wounds of wild-type mice, miR-34a-mimic treatment enhanced inflammation and delayed healing. To further explore how miR-34 functions, LGR4 was identified as a direct target mediating the proinflammatory function of miR-34a and miR-34c. Interestingly, impaired wound closure with enhanced inflammation was also observed in Lgr4 knockout mice. Mechanistically, the miR-34-LGR4 axis regulated GSK-3β-induced p65 serine 468 phosphorylation, changing the activity of the NF-κB signaling pathway. Collectively, the miR-34-LGR4 axis was shown to regulate keratinocyte inflammatory response, the deregulation of which may play a pathological role in venous ulcers.
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Affiliation(s)
- Jianmin Wu
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China; Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden.
| | - Xi Li
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Dongqing Li
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Xiaolin Ren
- Institute of Biomedical Science and School of Life Science, East China Normal University, Shanghai, China
| | - Yijuan Li
- Institute of Biomedical Science and School of Life Science, East China Normal University, Shanghai, China
| | - Eva K Herter
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Mengyao Qian
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China
| | - Maria-Alexandra Toma
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Anna-Maria Wintler
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Irène Gallais Sérézal
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Ola Rollman
- Department of Dermatology, Academic University Hospital, Uppsala, Sweden
| | - Mona Ståhle
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Jakob D Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden.
| | - Xiyun Ye
- Institute of Biomedical Science and School of Life Science, East China Normal University, Shanghai, China.
| | - Ning Xu Landén
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Ming Wai Lau Centre for Reparative Medicine, Stockholm node, Karolinska Institute, Stockholm, Sweden.
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44
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Rousselle P, Braye F, Dayan G. Re-epithelialization of adult skin wounds: Cellular mechanisms and therapeutic strategies. Adv Drug Deliv Rev 2019; 146:344-365. [PMID: 29981800 DOI: 10.1016/j.addr.2018.06.019] [Citation(s) in RCA: 248] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/28/2018] [Accepted: 06/25/2018] [Indexed: 12/21/2022]
Abstract
Cutaneous wound healing in adult mammals is a complex multi-step process involving overlapping stages of blood clot formation, inflammation, re-epithelialization, granulation tissue formation, neovascularization, and remodelling. Re-epithelialization describes the resurfacing of a wound with new epithelium. The cellular and molecular processes involved in the initiation, maintenance, and completion of epithelialization are essential for successful wound closure. A variety of modulators are involved, including growth factors, cytokines, matrix metalloproteinases, cellular receptors, and extracellular matrix components. Here, we focus on cellular mechanisms underlying keratinocyte migration and proliferation during epidermal closure. Inability to re-epithelialize is a clear indicator of chronic non-healing wounds, which fail to proceed through the normal phases of wound healing in an orderly and timely manner. This review summarizes the current knowledge regarding the management and treatment of acute and chronic wounds, with a focus on re-epithelialization, offering some insights into novel future therapies.
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45
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Zhang D, Li Z, Wang Z, Zeng F, Xiao W, Yu A. MicroRNA-126: a promising biomarker for angiogenesis of diabetic wounds treated with negative pressure wound therapy. Diabetes Metab Syndr Obes 2019; 12:1685-1696. [PMID: 31564936 PMCID: PMC6732575 DOI: 10.2147/dmso.s199705] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 05/10/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Negative pressure wound therapy represents an effective therapy to treat nonhealing diabetic wounds by promoting angiogenesis, of which the mechanism hasn't been investigated thoroughly. Growing evidence suggests that miRNAs hold great potential to be clinical biomarkers, and miR-126 is an essential angiogenesis regulator in diabetic wound repair. PURPOSE Our study aims to explore the effect of NPWT on the expression of miR-126 in the wound tissue and plasma of diabetic rat models and the association between circulating miR-126 and two quantitative indexes of angiogenesis. METHODS Full-thickness excisional wounds were created on the back of diabetic rats. Measure the wound closure and collect the wound tissue and blood for H&E, immunohistochemistry, Western blot and RT-PCR. Here we demonstrated that significantly increased capillary density and arteriolar density in the NPWT group at each specified time-point. RESULTS In the NPWT group, miR-126 expression was significantly increased on days 3, 5, 7, and 9 (P<0.05). Furthermore, statistically significant increases in VEGF mRNA and protein expression and p-ERK expression, as well as decreased SPRED1 expression, were noted upon treatment with NPWT on day 9. Our data revealed that miR-126 expression in the wound and plasma was significantly associated (P<0.05). Moreover, a positive correlation was also detected between increased levels of circulating miR-126 and arteriolar density, as well as capillary density (P<0.05). CONCLUSION The study suggested that miR-126 was upregulated by NPWT and could represent a promising monitoring tool for angiogenesis in diabetic wounds treated with NPWT.
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Affiliation(s)
- Dong Zhang
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
| | - Zonghuan Li
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
| | - Zheng Wang
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
| | - Fanwei Zeng
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
| | - Weidong Xiao
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
- Correspondence: Weidong Xiao; Aixi YuDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, No. 169, Donghu Road, Wuchang district, Wuhan, Hubei430071, People’s Republic of ChinaTel +86 1 870 718 2868; +86 1 350 718 7489Email ;
| | - Aixi Yu
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei430071, People’s Republic of China
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Herter EK, Li D, Toma MA, Vij M, Li X, Visscher D, Wang A, Chu T, Sommar P, Blomqvist L, Berglund D, Ståhle M, Wikstrom JD, Xu Landén N. WAKMAR2, a Long Noncoding RNA Downregulated in Human Chronic Wounds, Modulates Keratinocyte Motility and Production of Inflammatory Chemokines. J Invest Dermatol 2018; 139:1373-1384. [PMID: 30594489 DOI: 10.1016/j.jid.2018.11.033] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/29/2018] [Accepted: 11/10/2018] [Indexed: 01/08/2023]
Abstract
Chronic wounds represent a major and growing health and economic burden worldwide. A better understanding of molecular mechanisms of normal as well as impaired wound healing is needed to develop effective treatment. Herein we studied the potential role of long noncoding RNA LOC100130476 in skin wound repair. LOC100130476 is an RNA polymerase II-encoded polyadenylated transcript present in both cytoplasm and nucleus. We found that its expression was lower in wound-edge keratinocytes of human chronic wounds compared to normal wounds of healthy donors and intact skin. In cultured keratinocytes, LOC100130476 expression was induced by TGF-β signaling. By reducing LOC100130476 expression with antisense oligos or activating its transcription with CRISPR/Cas9 Synergistic Activation Mediator system, we showed that LOC100130476 restricted the production of inflammatory chemokines by keratinocytes, while enhancing cell migration. In line with this, knockdown of LOC100130476 impaired re-epithelization of human ex vivo wounds. Based on these results, we named LOC100130476 wound and keratinocyte migration-associated long noncoding RNA 2 (WAKMAR2). Moreover, we identified a molecular network that may mediate the biological function of WAKMAR2 in keratinocytes using microarray. In summary, our data suggest that WAKMAR2 is an important regulator of skin wound healing and its deficiency may contribute to the pathogenesis of chronic wounds.
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Affiliation(s)
- Eva K Herter
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Dongqing Li
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Maria A Toma
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Manika Vij
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Xi Li
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Dani Visscher
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden
| | - Aoxue Wang
- Department of Dermatology, The Second Hospital of Dalian Medical University, Dalian, China
| | - Tongbin Chu
- Department of Wound Regeneration, The Second Hospital of Dalian Medical University, Dalian, China
| | - Pehr Sommar
- Department of Molecular Medicine and Surgery, Section of Plastic Surgery, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - Lennart Blomqvist
- Department of Medicine Huddinge, Karolinska Institute, Stockholm, Sweden
| | - David Berglund
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Sweden
| | - Mona Ståhle
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Jakob D Wikstrom
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Ning Xu Landén
- Dermatology and Venereology Section, Department of Medicine (Solna), Karolinska Institute, Stockholm, Sweden; Ming Wai Lau Centre for Reparative Medicine, Stockholm node, Karolinska Institute, Stockholm, Sweden.
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Liu Z, Ren L, Tian J, Liu N, Hu Y, Zhang P. Comprehensive Analysis of Long Noncoding RNAs and Messenger RNAs Expression Profiles in Patients with Marjolin Ulcer. Med Sci Monit 2018; 24:7828-7840. [PMID: 30385735 PMCID: PMC6228116 DOI: 10.12659/msm.911177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background Marjolin ulcer (MU) is an aggressive cutaneous malignancy. Typically, MU occurs over a period of time in post-burn and/or post-traumatic lesions and scars. However, the pathogenesis of scar carcinogenesis and MU development remains to be elucidated. The present study aimed to investigate the long noncoding RNA (lncRNA) and messenger RNA (mRNA) expression profiling in MU, which could provide new information on the potential molecular mechanisms of MU development. Material/Methods The lncRNA microarray analysis was conducted in normal skin, scar, and MU tissue, and quantitative real-time PCR experiment was carried out to validate the reliability of the microarray data. Furthermore, a series of integrative bioinformatic approaches were applied to decipher the function of differentially expressed lncRNAs. Results A total of 7130 lncRNAs and 9867 mRNAs were differentially expressed among normal skin, scar, and MU tissues. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analysis demonstrated that these aberrantly expressed transcripts were mainly involved in cell cycle, immune response, and the p53 signaling pathway. Series Test of Cluster analysis indicated certain dysregulated lncRNAs were expressed with a gradually increasing or decreasing trend and might participated in malignant transformation of scar tissue postburn. Co-expression analysis showed 5 selected lncRNAs might regulate cell proliferation through the p53 signaling pathway. Finally, the competing endogenous RNA (ceRNA) network indicated that lncRNA uc001oou.3 might be implicated in ceRNA mechanism during MU development. Conclusions Taken together, our study implied the aberrant expression of lncRNAs may play an important role in the pathogenesis and development of MU, and the exact mechanism warrants further investigation.
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Affiliation(s)
- Zan Liu
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Licheng Ren
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Jing Tian
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Ning Liu
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Yanke Hu
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Pihong Zhang
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
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Tao H, Song ZY, Ding XS, Yang JJ, Shi KH, Li J. LncRNAs and miRs as epigenetic signatures in diabetic cardiac fibrosis: new advances and perspectives. Endocrine 2018; 62:281-291. [PMID: 30054866 DOI: 10.1007/s12020-018-1688-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/16/2018] [Indexed: 12/13/2022]
Abstract
PURPOSE Diabetic cardiomyopathy (DCM) is a serious cardiac complication of diabetes, which further lead to heartfailure. It is known that diabetes-induced cardiac fibrosis is a key pathogenic factor contributing topathological changes in DCM. However, pathogenetic mechanisms underlying diabetes cardiac fibrosis arestill elusive. Recent studies have indicated that noncoding RNAs (ncRNAs) play a key role in diabetescardiac fibrosis. The increasing complexity of epigenetic regulator poses great challenges to ourconventional conceptions regarding how ncRNAs regulate diabetes cardiac fibrosis. METHODS We searched PubMed, Web of Science, and Scopus for manuscripts published prior to April 2018 using keywords "Diabetic cardiomyopathy" AND " diabetes cardiac fibrosis " OR " noncoding RNAs " OR " longnoncoding RNAs " OR " microRNAs " OR "epigenetic". Manuscripts were collated, studied and carriedforward for discussion where appropriate. RESULTS Based on the view that during diabetic cardiac fibrosis, ncRNAs are able to regulate diabetic cardiac fibrosisby targeting genes involved in epigenetic pathways. Many studies have focused on ncRNAs, an epigeneticregulator deregulating protein-coding genes in diabetic cardiac fibrosis, to identify potential therapeutictargets. Recent advances and new perspectives have found that long noncoding RNAs and microRNAs,exert their own effects on the progression of diabetic cardiac fibrosis. CONCLUSION We firstly examine the growing role of ncRNAs characteristics and ncRNAs-regulated genes involved indiabetic cardiac fibrosis. Then, we provide several possible therapeutic strategies and highlight the potentialof molecular mechanisms in which targeting epigenetic regulators are considered as an effective means of treating diabetic cardiac fibrosis.
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Affiliation(s)
- Hui Tao
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 210009, Nanjing, China
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, 230601, Hefei, China
| | - Zheng-Yu Song
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 210009, Nanjing, China
| | - Xuan-Sheng Ding
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 210009, Nanjing, China.
| | - Jing-Jing Yang
- Department of Pharmacology, The Second Hospital of Anhui Medical University, 230601, Hefei, China
| | - Kai-Hu Shi
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, 230601, Hefei, China.
- Department of Cardiothoracic Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Jiangsu Province, 210028, Nanjing, China.
| | - Jun Li
- School of Pharmacy, Anhui Medical University, 230032, Hefei, China
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Li M, Wang J, Liu D, Huang H. High‑throughput sequencing reveals differentially expressed lncRNAs and circRNAs, and their associated functional network, in human hypertrophic scars. Mol Med Rep 2018; 18:5669-5682. [PMID: 30320389 PMCID: PMC6236202 DOI: 10.3892/mmr.2018.9557] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 08/16/2018] [Indexed: 12/11/2022] Open
Abstract
Growing evidence suggests that long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) are involved in the occurrence and development of tumors and fibrotic diseases. However, the integrated analysis of lncRNA and circRNA expression, alongside associated co-expression and competing endogenous RNA (ceRNA) networks, has not yet been performed in human hypertrophic scars (HS). The present study compared the expression levels of lncRNAs, circRNAs and mRNAs in human HS and normal skin tissues by high-throughput RNA sequencing. Numerous differentially expressed lncRNAs, circRNAs and mRNAs were detected. Subsequently, five aberrantly expressed lncRNAs and mRNAs, and six circRNAs were measured to verify the RNA sequencing results by reverse transcription-quantitative polymerase chain reaction. Furthermore, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were performed for the dysregulated genes, in order to elucidate their principal functions. In addition, a coding-noncoding gene co-expression (CNC) network and ceRNA network were constructed for specific significantly altered genes. The CNC network analysis suggested that AC048380.1 and LINC00299 were associated with metastasis-related genes, including inhibin subunit βA (INHBA), SMAD family member 7 (SMAD7), collagen type I α1 chain (COL1A1), transforming growth factor β3 (TGFβ3) and MYC proto-oncogene, bHLH transcription factor (MYC). Inhibitor of DNA binding 2 was associated with the lncRNAs cancer susceptibility 11, TGFβ3-antisense RNA 1 (AS1), INHBA-AS1, AC048380.1, LINC00299 and LINC01969. Circ-Chr17:50187014_50195976_-, circ-Chr17:50189167_50194626_-, circ-Chr17:50189167_ 50198002_- and circ-Chr17:50189858_50195330_- were also associated with INHBA, SMAD7, COL1A1, TGFβ3 and MYC. COL1A1 and TGFβ3 were associated with circ-Chr9:125337017_125337591_+ and circ-Chr12:120782654_120784593_-. The ceRNA network indicated that INHBA-AS1 and circ-Chr9:125337017_125337591_+ were ceRNAs of microRNA-182-5p targeting potassium voltage-gated channel subfamily J member 6, ADAM metallopeptidase with thrombospondin type 1 motif 18, SRY-box 11, MAGE family member L2, matrix metallopeptidase 16, thrombospondin 2, phosphodiesterase 11A and collagen type V a1 chain. These findings suggested that lncRNAs and circRNAs may act as ceRNAs, which are implicated in the pathophysiology and development of human HS, and lay a foundation for further insight into the novel regulatory mechanism of lncRNAs and circRNAs in hypertrophic scarring.
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Affiliation(s)
- Min Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jian Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Dewu Liu
- Department of Burns, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Heping Huang
- Department of Plastic Surgery, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi 330006, P.R. China
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Mori R, Tanaka K, Shimokawa I. Identification and functional analysis of inflammation-related miRNAs in skin wound repair. Dev Growth Differ 2018; 60:306-315. [PMID: 29873073 DOI: 10.1111/dgd.12542] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022]
Abstract
Inflammation at a wound site is essential for preventing infection. However, misregulated inflammation leads to pathologies of the healing process, including chronic non-healing wounds and scarring. MicroRNAs (miRNAs) are key regulators of the inflammatory response and tissue repair, acting by translational processing of target mRNAs. In the final step of miRNA processing, Argonaute 2 (Ago2)-bound mature miRNA complexes bind to target mRNAs and inhibit their translation. A variety of wound healing-related miRNAs have been identified and their misregulation likely contributes to wound pathologies, including scarring and chronic healing. Recently, we have developed an Ago2-bound mature miRNA purification system that uses Ago2 antibody to analyze the expression of miRNAs from wound tissues by microarray and next generation sequencing. We have identified several wound inflammation-related miRNAs via Ago2-target immunoprecipitation assays and next generation sequencing of wound tissues from wild-type and PU.1 knockout mice, which exhibit no inflammatory response because of a lack of immune cell lineages. We demonstrated that miR-142, an identified inflammation-related miRNA, is essential role for neutrophilic chemotaxis via inhibition of small GTPase translation; its misregulation leads to susceptibility to infection against Staphylococcus aureus at skin wound sites. In this review, we summarize recent advances of miRNA studies in skin wound healing, introduce our miRNA purification system using an immunoprecipitation assay method, and discuss the function of miR-142 in skin wound healing.
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Affiliation(s)
- Ryoichi Mori
- Department of Pathology, Nagasaki University School of Medicine and Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Katsuya Tanaka
- Department of Pathology, Nagasaki University School of Medicine and Graduate School of Biomedical Sciences, Nagasaki, Japan.,Department of Plastic and Reconstructive Surgery, Ehime Prefectural Center Hospital, Matsuyama, Japan
| | - Isao Shimokawa
- Department of Pathology, Nagasaki University School of Medicine and Graduate School of Biomedical Sciences, Nagasaki, Japan
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