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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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Al-Rawaf HA, Gabr SA, Alghadir AH. Potential roles of circulating microRNAs in the healing of type 1 diabetic wounds treated with green tea extract: molecular and biochemical study. Heliyon 2023; 9:e22020. [PMID: 38027999 PMCID: PMC10665742 DOI: 10.1016/j.heliyon.2023.e22020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Background Circulating miRNAs have been implicated in various aspects of diabetic wound healing, including inflammation, angiogenesis, and extracellular matrix remodeling. Thus, in alternative herbal medicine strategies, miRNAs will be potential therapeutic molecular targets in nonhealing wounds. These could be valuable elements for understanding the molecular basis of diabetic wound healing and could be used as good elements in bioinformatics. Objectives To elucidate the molecular mechanisms of microRNAs in association with apoptosis-inducing genes in controlling skin wound healing in diabetic wounds treated with green tea polyphenols (GTPs). Methods Green tea hydro extract (GTE) at doses of100-200 mg/ml was topically applied to the skin tissues of rats with T1DM induced by a single dose of streptozotocin (STZ; 100 mg/kg, in 0.01 M sodium citrate, pH 4.3-4.5) injected intraperitoneally for seven consecutive days to induce T1DM. The rats were treated with green tea for three weeks. A sterile surgical blade was used to inflict a circular wound approximately 2 cm in diameter on the anterior-dorsal side of previously anesthetized rats by a combination of ketamine hydrochloride (50 mg/kg, i.e., body weight) and xylazine hydrochloride. Afterward, the molecular roles of the circulating miRNAs miR-21, miR-23a, miR-146a, and miR-29b and apoptotic genes were determined by quantitative real-time PCR to evaluate Bax, Caspase-3, and Bcl-2 in wound healing. In addition, HPLC analysis was also performed to estimate the active polyphenols (GTPs) present in the hydro extract of green tea leaves. Results Wound healing was improved in diabetic skin wounds following treatment with GTE at doses of 100-200 mg/dl for three weeks. The wound parameters contraction, epithelialization, and scar formation significantly improved in a short time (14 days) compared to the longer periods identified in diabetic non-treated rats (20 days) and the standard control (15.5 days). Molecular analyses reported a significant increase in the levels of miR-21, miR-23a, and miR-146a and a decrease in the levels of miR-29b in green tea-treated diabetic rats compared to those in the standard control and STZ-diabetic non-treated rats. In addition, the molecular apoptotic genes Bax and caspase-3 significantly increased, and the BcL-2 gene significantly decreased following treatment with green tea polyphenols. Conclusions The data showed that active green tea polyphenols (GTPs) present in GTE significantly improved diabetic wound healing by controlling apoptotic genes and the circulating microRNAs miR-21, miR-23a, miR-146a, and miR-29b, which might be involved in cellular apoptosis and angiogenesis processes. Thus, to establish a future model for the treatment of diabetic wounds, further studies are needed to understand the potential association of these biological parameters with the wound-healing process in diabetic wounds.
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Affiliation(s)
- Hadeel A. Al-Rawaf
- Rehabilitation Research Chair, Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Sami A. Gabr
- Rehabilitation Research Chair, Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad H. Alghadir
- Rehabilitation Research Chair, Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Kiani M, Moraffah F, Khonsari F, Kharazian B, Dinarvand R, Shokrgozar MA, Atyabi F. Co-delivery of simvastatin and microRNA-21 through liposome could accelerates the wound healing process. BIOMATERIALS ADVANCES 2023; 154:213658. [PMID: 37866233 DOI: 10.1016/j.bioadv.2023.213658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 09/10/2023] [Accepted: 10/07/2023] [Indexed: 10/24/2023]
Abstract
The gene delivery approach, mainly microRNAs (miRNA) as key wound healing mediators, has recently received extensive attention. MicroRNA-21 (miR-21) has strongly impacted wound healing by affecting the inflammation and proliferation phases. Previous studies have also demonstrated the beneficial effect of simvastatin on wound healing. Therefore, we designed a dual-drug/gene delivery system using PEGylated liposomes that could simultaneously attain the co-encapsulation and co-delivery of miRNA and simvastatin (SIM) to explore the combined effect of this dual-drug delivery system on wound healing. The PEG-liposomes for simvastatin and miR-21 plasmid (miR-21-P/SIM/Liposomes) were prepared using the thin-film hydration method. The liposomes showed 85 % entrapment efficiency for SIM in the lipid bilayer and high physical entrapment of miR-21-P in the inner cavity. In vitro studies demonstrated no cytotoxicity for the carrier on normal human dermal fibroblast cells (NHDF) and 97 % cellular uptake over 2 h incubation. The scratch test revealed excellent cell proliferation and migration after treatment with miR-21-P/SIM/Liposomes. For the in vivo experiments, a full-thickness cutaneous wound model was used. The wound closure on day 8 was higher for Liposomal formulation containing miR-21-P promoting faster re-epithelialization. On day 12, all treated groups showed complete wound closure. However, following histological analysis, the miR-21-P/SIM/Liposomes revealed the best tissue regeneration, similar to normal functional skin, by reduced inflammation and increased re-epithelialization, collagen deposition and angiogenesis. In conclusion, the designed miR-21-P/SIM/Liposomes could significantly accelerate the process of wound healing, which provides a new strategy for the management of chronic wounds.
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Affiliation(s)
- Melika Kiani
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Moraffah
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Khonsari
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahar Kharazian
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Rassoul Dinarvand
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; School of Pharmacy, De Mont Fort University, Leicester, UK
| | | | - Fatemeh Atyabi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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4
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Jiang X, Shi R, Ma R, Tang X, Gong Y, Yu Z, Shi Y. The role of microRNA in psoriasis: A review. Exp Dermatol 2023; 32:1598-1612. [PMID: 37382420 DOI: 10.1111/exd.14871] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/23/2023] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
Psoriasis is a chronic immune-mediated inflammatory skin disease that involves a complex interplay between infiltrated immune cells and keratinocytes. Great progress has been made in the research on the molecular mechanism of coding and non-coding genes, which has helped in clinical treatment. However, our understanding of this complex disease is far from clear. MicroRNAs (miRNAs) are small non-coding RNA molecules that are involved in post-transcriptional regulation, characterised by their role in mediating gene silencing. Recent studies on miRNAs have revealed their important role in the pathogenesis of psoriasis. We reviewed the current advances in the study of miRNAs in psoriasis; the existing research has found that dysregulated miRNAs in psoriasis notably affect keratinocyte proliferation and/or differentiation processes, as well as inflammation progress. In addition, miRNAs also influence the function of immune cells in psoriasis, including CD4+ T cells, dendritic cells, Langerhans cells and so on. In addition, we discuss possible miRNA-based therapy for psoriasis, such as the topical delivery of exogenous miRNAs, miRNA antagonists and miRNA mimics. Our review highlights the potential role of miRNAs in the pathogenesis of psoriasis, and we expect more research progress with miRNAs in the future, which will help us understand this complex skin disease more accurately.
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Affiliation(s)
- Xingyu Jiang
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Rongcan Shi
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Rui Ma
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Xinyi Tang
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Yu Gong
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Zengyang Yu
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Yuling Shi
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
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Suo L, Cheng J, Yuan H, Jiang Z, Tash D, Wang L, Cheng H, Zhang Z, Zhang F, Zhang M, Cao Z, Zhao R, Guan D. miR-26a/30d/152 are reliable reference genes for miRNA quantification in skin wound age estimation. Forensic Sci Res 2023; 8:230-240. [PMID: 38221964 PMCID: PMC10785593 DOI: 10.1093/fsr/owad037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 08/23/2023] [Indexed: 01/16/2024] Open
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNAs that exert their biological functions as negative regulators of gene expression. They are involved in the skin wound healing process with a dynamic expression pattern and can therefore potentially serve as biomarkers for skin wound age estimation. However, no reports have described any miRNAs as suitable reference genes (RGs) for miRNA quantification in wounded skin or samples with post-mortem changes. Here, we aimed to identify specific miRNAs as RGs for miRNA quantification to support further studies of skin wound age estimation. Overall, nine miRNAs stably expressed in mouse skin at certain posttraumatic intervals (PTIs) were preselected by next-generation sequencing as candidate RGs. These nine miRNAs and the commonly used reference genes (comRGs: U6, GAPDH, ACTB, 18S, 5S, LC-Ogdh) were quantitatively examined using quantitative real-time reverse-transcription polymerase chain reaction at different PTIs during skin wound healing in mice. The stabilities of these genes were evaluated using four independent algorithms: GeNorm, NormFinder, BestKeeper, and comparative Delta Ct. Stability was further evaluated in mice with different post-mortem intervals (PMIs). Overall, mmu-miR-26a-5p, mmu-miR-30d-5p, and mmu-miR-152-3p were identified as the most stable genes at both different PTIs and PMIs. These three miRNA RGs were additionally validated and compared with the comRGs in human samples. After assessing using one, two, or three miRNAs in combination for stability at different PTIs, PMIs, or in human samples, the set of miR-26a/30d/152 was approved as the best normalizer. In conclusion, our data suggest that the combination of miR-26a/30d/152 is recommended as the normalization strategy for miRNA qRT-PCR quantification in skin wound age estimation. Key points The small size of miRNAs makes them less susceptible to post-mortem autolysis or putrefaction, leading to their potential use in wound age estimation.Studying miRNAs as biological indicators of skin wound age estimation requires the selection and validation of stable reference genes because commonly used reference genes, such as U6, ACTB, GAPDH, 5S, 18S, and LC-Ogdh, are not stable.miR-26a/30d/152 are stable and reliable as reference genes and their use in combination is a recommended normalization strategy for miRNA quantitative analysis in wounded skin.
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Affiliation(s)
- Longlong Suo
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Jian Cheng
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Haomiao Yuan
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Zhenfei Jiang
- Department of Road Traffic Accident Investigation, Academy of Forensic Science, Shanghai, China
| | - Dilichati Tash
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Autonomous Prefecture Public Security Bureau, Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Linlin Wang
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Collaborative Laboratory of Intelligentized Forensic Science, Shenyang, China
- Laboratory of Forensic Biochemistry, China Medical University School of Forensic Medicine, Shenyang, China
| | - Hao Cheng
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Zhongduo Zhang
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Fuyuan Zhang
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
| | - Miao Zhang
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Collaborative Laboratory of Intelligentized Forensic Science, Shenyang, China
- Laboratory of Forensic Biochemistry, China Medical University School of Forensic Medicine, Shenyang, China
| | - Zhipeng Cao
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Collaborative Laboratory of Intelligentized Forensic Science, Shenyang, China
- Laboratory of Forensic Biochemistry, China Medical University School of Forensic Medicine, Shenyang, China
| | - Rui Zhao
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Collaborative Laboratory of Intelligentized Forensic Science, Shenyang, China
- Laboratory of Forensic Biochemistry, China Medical University School of Forensic Medicine, Shenyang, China
| | - Dawei Guan
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, China
- Collaborative Laboratory of Intelligentized Forensic Science, Shenyang, China
- Laboratory of Forensic Biochemistry, China Medical University School of Forensic Medicine, Shenyang, China
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Kalhori MR, Soleimani M, Alibakhshi R, Kalhori AA, Mohamadi P, Azreh R, Farzaei MH. The Potential of miR-21 in Stem Cell Differentiation and its Application in Tissue Engineering and Regenerative Medicine. Stem Cell Rev Rep 2023; 19:1232-1251. [PMID: 36899116 DOI: 10.1007/s12015-023-10510-8] [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] [Accepted: 01/18/2023] [Indexed: 03/12/2023]
Abstract
MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are two important types of non-coding RNAs that are not translated into protein. These molecules can regulate various biological processes, including stem cell differentiation and self-renewal. One of the first known miRNAs in mammals is miR-21. Cancer-related studies have shown that this miRNA has proto-oncogene activity and is elevated in cancers. However, it is confirmed that miR-21 inhibits stem cell pluripotency and self-renewal and induces differentiation by targeting various genes. Regenerative medicine is a field of medical science that tries to regenerate and repair damaged tissues. Various studies have shown that miR-21 plays an essential role in regenerative medicine by affecting stem cell proliferation and differentiation. In this review, we will discuss the function of miR-21 in regenerative medicine of the liver, nerve, spinal cord, wound, bone, and dental tissues. In addition, the function of natural compounds and lncRNAs will be analyzed as potential regulators of miR-21 expression in regenerative medicine.
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Affiliation(s)
- Mohammad Reza Kalhori
- Regenerative Medicine Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza Alibakhshi
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Amir Ali Kalhori
- Regenerative Medicine Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Parisa Mohamadi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical, Sciences, Tehran, Iran
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Rasoul Azreh
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hosien Farzaei
- Medical Technology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Siu MC, Voisey J, Zang T, Cuttle L. MicroRNAs involved in human skin burns, wound healing and scarring. Wound Repair Regen 2023; 31:439-453. [PMID: 37268303 DOI: 10.1111/wrr.13100] [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: 10/17/2022] [Revised: 05/09/2023] [Accepted: 05/18/2023] [Indexed: 06/04/2023]
Abstract
MicroRNAs are small, non-coding RNAs that regulate gene expression, and consequently protein synthesis. Downregulation and upregulation of miRNAs and their corresponding genes can alter cell apoptosis, proliferation, migration and fibroproliferative responses following a thermal injury. This review summarises the evidence for altered human miRNA expression post-burn, and during wound healing and scarring. In addition, the most relevant miRNA targets and their roles in potential pathways are described. Previous studies using molecular techniques have identified 197 miRNAs associated with human wound healing, burn wound healing and scarring. Five miRNAs alter the expression of fibroproliferative markers, proliferation and migration of fibroblasts and keratinocytes post-burn: hsa-miR-21 and hsa-miR-31 are increased after wounding, and hsa-miR-23b, hsa-miR-200b and hsa-let-7c are decreased. Four of these five miRNAs are associated with the TGF-β pathway. In the future, large scale, in vivo, longitudinal human studies utilising a range of cell types, ethnicity and clinical healing outcomes are fundamental to identify burn wound healing and scarring specific markers. A comprehensive understanding of the underlying pathways will facilitate the development of clinical diagnostic or prognostic tools for better scar management and the identification of novel treatment targets for improved healing outcomes in burn patients.
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Affiliation(s)
- Man Ching Siu
- Faculty of Health, School of Biomedical Sciences, Centre for Children's Health Research, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
- Centre for Genomics and Personalised Health Research, QUT, Brisbane, Queensland, Australia
| | - Joanne Voisey
- Centre for Genomics and Personalised Health Research, QUT, Brisbane, Queensland, Australia
| | - Tuo Zang
- Faculty of Health, School of Biomedical Sciences, Centre for Children's Health Research, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Leila Cuttle
- Faculty of Health, School of Biomedical Sciences, Centre for Children's Health Research, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
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Sanders MC, Balaji S, Martin WB, Siegmund N, Poland L, Sanders Hanna M, Wei D, Kaliada H, Littlejohn S, Ganey T. Protecting human amnion and chorion matrices during processing: Performance enhancement in a diabetic mouse model and human co-culture system. Wound Repair Regen 2023; 31:475-488. [PMID: 37209062 DOI: 10.1111/wrr.13099] [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: 05/19/2022] [Revised: 03/31/2023] [Accepted: 05/02/2023] [Indexed: 05/22/2023]
Abstract
Recent evidence suggests that protecting human amnion and chorion matrices (HACM) during processing enhances the performance of HACM for wound repair and tissue regeneration. We utilised a diabetic (db/db) delayed wound healing mouse model. Treatment of db/db full-thickness excisional wounds with HACM, processed with a polyampholyte preservative accentuated the proliferative phase of wound healing that decreased the time necessary to heal wounds. Polyampholyte protection improved the preservation of growth factors and cytokines during room temperature storage following E-beam sterilisation and improved its function in wound healing applications. Our findings indicate protected HACM tissue up-regulated MIP2, NF-kB, TNF-α, KI-67, and Arg1 (0.6-fold to 1.5-fold) but those changes were not statistically significant. Immunofluorescent assessment identifying cell activity illustrated an induction of the proliferative phase of wound healing and a switch from an inflammatory macrophage phenotype (M1) to a pro-regenerative macrophage phenotype (M2a). Genomic profiling of 282 genes was performed using Nanostring from co-cultures of human macrophages and fibroblasts. The polyampholyte + HACM-treated group, compared with the HACM or polyampholyte alone groups, had a statistically significant up-regulation (32-368 fold) of 12 genes primarily involved in macrophage plasticity including CLC7, CD209, CD36, HSD11B1, ICAM1, IL1RN, IL3RA, ITGAX, LSP1, and PLXDC2 (adj. p-value < 0.05). The polyampholyte alone group demonstrated statistically significant down-regulation of four genes ADRA2, COL7A1, CSF3, and PTGS2 (adj. p < 0.05). The HACM alone group up-regulated four genes ATG14, CXCL11, DNMT3A, and THBD, but the results were not statistically significant. Biomechanical measurements indicated that wounds treated with polyampholyte-protected HACM had more tensile integrity compared with wounds treated with HACM alone. These findings indicate that better protection of HACM during processing stabilises the HACM matrix, which may lead to improved wound healing outcomes.
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Affiliation(s)
| | - Swathi Balaji
- Pediatric Surgery Division, Department of Surgery, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, USA
| | | | | | | | | | - Da Wei
- ProDevLab, Alira Health, Framingham, Massachusetts, USA
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Li Y, Wang Z, Ishmael D, Lvy Y. The potential of using non-coding RNAs in forensic science applications. Forensic Sci Res 2023; 8:98-106. [PMID: 37621455 PMCID: PMC10445561 DOI: 10.1093/fsr/owad003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/21/2022] [Accepted: 01/29/2023] [Indexed: 08/26/2023] Open
Abstract
With the continuous development and integration of molecular biology and forensic science, non-coding RNAs (ncRNAs), especially ncRNAs with regulatory functions such as microRNA, long non-coding RNA, and circular RNA, have recently been actively explored by forensic scholars. In this study, we review the literature on these ncRNAs in various fields of forensic science, including postmortem interval determination, wound age estimation, forensic age assessment, cause of death analysis, and body fluid identification, aiming to evaluate the current research and provide a perspective for future applications.
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Affiliation(s)
- Yawen Li
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Zhuoqun Wang
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Dikeledi Ishmael
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yehui Lvy
- School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
- Institute of Wound Prevention and Treatment, Shanghai University of Medicine and Health Sciences, Shanghai, China
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Lyttle BD, Vaughn AE, Bardill JR, Apte A, Gallagher LT, Zgheib C, Liechty KW. Effects of microRNAs on angiogenesis in diabetic wounds. Front Med (Lausanne) 2023; 10:1140979. [PMID: 37020673 PMCID: PMC10067680 DOI: 10.3389/fmed.2023.1140979] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/27/2023] [Indexed: 04/07/2023] Open
Abstract
Diabetes mellitus is a morbid condition affecting a growing number of the world population, and approximately one third of diabetic patients are afflicted with diabetic foot ulcers (DFU), which are chronic non-healing wounds that frequently progress to require amputation. The treatments currently used for DFU focus on reducing pressure on the wound, staving off infection, and maintaining a moist environment, but the impaired wound healing that occurs in diabetes is a constant obstacle that must be faced. Aberrant angiogenesis is a major contributor to poor wound healing in diabetes and surgical intervention is often necessary to establish peripheral blood flow necessary for healing wounds. Over recent years, microRNAs (miRNAs) have been implicated in the dysregulation of angiogenesis in multiple pathologies including diabetes. This review explores the pathways of angiogenesis that become dysregulated in diabetes, focusing on miRNAs that have been identified and the mechanisms by which they affect angiogenesis.
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Affiliation(s)
- Bailey D. Lyttle
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
- *Correspondence: Bailey D. Lyttle,
| | - Alyssa E. Vaughn
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - James R. Bardill
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - Anisha Apte
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
| | - Lauren T. Gallagher
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - Carlos Zgheib
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
| | - Kenneth W. Liechty
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
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Henriet E, Abdallah F, Laurent Y, Guimpied C, Clement E, Simon M, Pichon C, Baril P. Targeting TGF-β1/miR-21 pathway in keratinocytes reveals protective effects of silymarin on imiquimod-induced psoriasis mouse model. JID INNOVATIONS 2022; 3:100175. [PMID: 36968096 PMCID: PMC10034514 DOI: 10.1016/j.xjidi.2022.100175] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 12/23/2022] Open
Abstract
Epidermal cells integrate multiple signals that activate the signaling pathways involved in skin homeostasis. TGF-β1 signaling pathway upregulates microRNA (miR)-21-5p in keratinocytes and is often deregulated in skin diseases. To identify the bioactive compounds that enable to modulate the TGF-β1/miR-21-5p signaling pathway, we screened a library of medicinal plant extracts using our miR-ON RILES luciferase reporter system placed under the control of the miR-21-5p in keratinocytes treated with TGF-β1. We identified silymarin, a mixture of flavonolignans extracted from Silybum marianum (L.) Gaertn., as the most potent regulator of miR-21-5p expression. Using Argonaute 2 immunoprecipitation and RT-qPCR, we showed that silymarin regulates the expression of miR-21-5p through a noncanonical TGF-β1 signaling pathway, whereas RNA-sequencing analysis revealed three unexpected transcriptomic signatures associated with keratinocyte differentiation, cell cycle, and lipid metabolism. Mechanistically, we demonstrated that SM blocks cell cycle progression, inhibits keratinocyte differentiation through repression of Notch3 expression, stimulates lipid synthesis via activation of PPARγ signaling and inhibits inflammatory responses by suppressing the transcriptional activity of NF-κB. We finally showed that topical application of silymarin alleviates the development of imiquimod-induced psoriasiform lesions in mice by abrogating the altered expression levels of markers involved in inflammation, proliferation, differentiation, and lipid metabolism.
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梁 渝, 李 艳, 高 芸, 王 莉, 冉 兴. [Experimental Study of Using Aloe Vera Gel to Treat Diabetic Chronic Cutaneous Ulcers in Bama Miniature Pigs]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2022; 53:953-960. [PMID: 36443034 PMCID: PMC10408970 DOI: 10.12182/20221160503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Indexed: 06/16/2023]
Abstract
Objective To investigate the efficacy, safety, and mechanism of topical application of aloe vera gel (AVG) to treat diabetic chronic cutaneous ulcers in Bama miniature pigs. Methods The Bama miniature pig model of diabetic chronic skin wounds was constructed and the model pigs were randomly assigned to AVG daily administration group (AVG QD), aloe vera gel every-other-day administration group (AVG QOD), and diabetic control group (DC). A non-diabetic chronic skin wounds model pig was set as the non-diabetic control group (NDC). Treatment efficacy was evaluated based on the amount of time needed for complete healing of the wounds, healing rates, granulation growth rates, and skin histopathological changes. Safety was evaluated according to whether adverse reactions were observed. In addition, the dynamic changes of the relative expression levels of miR21, miR29a, miR126, miR146a, miR155, and miR210 in wound granulation tissues were examined. Results 1) Efficacy and safety: The amount of time needed for complete healing of the wounds was shorter in the NDC group than those of the three other groups, DC group, AVG QD group, and AVG QOD group (all P<0.05). The amount of time needed for complete healing of the wounds was shorter in the AVG QD group and AVG QOD group than that of DC group (all P<0.05). The amount of time needed for complete healing of the wounds was shorter in the AVG QOD group than that of AVG QD group (all P<0.05). No adverse reactions were detected in the whole process of AVG topical treatment. The granulation growth rate of NDC group was higher than those of DC group, AVG QD group, and AVG QOD group (all P<0.05). The wound healing rate of NDC group was higher than those of DC group, AVG QD group, and AVG QOD group (all P<0.05); the wound healing rate of AVG QOD group was higher than those of DC group and AVG QD group (all P<0.05). 2) Histopathology: The results of HE staining light microscopy showed that collagen fiber production increased, and that microvascular formation with slight inflammatory cell infiltration was observed in the dermal interstitium at the initial stage of wound healing after AVG treatment. One year of after complete healing, pathological examination results of wound healing skin showed that the epidermal keratinization was complete, that collagen was arranged neatly and orderly, and that many microvessels were found in the interstitium. The results of picric acid celestite scarlet staining showed that, after AVG treatment, type Ⅰ collagen mainly increased in the initial stage of wound healing, type Ⅲ collagen gradually increased when the wound healed completely, and the collagen was arranged neatly during the whole process. 3) The relative expression of microRNAs: The relative expression of miR21, miR126, and miR210 in NDC group, AVG QD group, and AVG QOD group were higher than that in DC group (all P<0.05). The relative expression of miR29a and miR155 in NDC group, AVG QD group, and AVG QOD group was lower than that in DC group (all P<0.05). The relative expression of miR146a in NDC group was higher than that in DC group ( P<0.05). Conclusion AVG topical application can shorten the time needed for complete healing of diabetic chronic wounds in Bama minipigs. The wound healing speed of the alternate-day treatment group was faster than that of the daily treatment group. No adverse reactions were observed over the course of the treatment. The mechanism may be related to the up-regulation of the expressions of miR21, miR126, and miR210 and the down-regulation of miR29a and miR155 in wound granulation tissue.
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Affiliation(s)
- 渝捷 梁
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 创面修复创新中心 (成都 610041)Innovation Center for Wound Repair, Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 艳 李
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 创面修复创新中心 (成都 610041)Innovation Center for Wound Repair, Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 芸艺 高
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 创面修复创新中心 (成都 610041)Innovation Center for Wound Repair, Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 莉 王
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 创面修复创新中心 (成都 610041)Innovation Center for Wound Repair, Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 兴无 冉
- 四川大学华西医院 内分泌代谢科 糖尿病足诊治中心 创面修复创新中心 (成都 610041)Innovation Center for Wound Repair, Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
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miR-100-5p Promotes Epidermal Stem Cell Proliferation through Targeting MTMR3 to Activate PIP3/AKT and ERK Signaling Pathways. Stem Cells Int 2022; 2022:1474273. [PMID: 36045954 PMCID: PMC9421352 DOI: 10.1155/2022/1474273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/22/2022] [Accepted: 08/02/2022] [Indexed: 12/04/2022] Open
Abstract
Skin epidermal stem cells (EpSCs) play a critical role in wound healing and are ideal seed cells for skin tissue engineering. Exosomes from human adipose-derived stem cells (ADSC-Exos) promote human EpSC proliferation, but the underlying mechanism remains unclear. Here, we investigated the effect of miR-100-5p, one of the most abundant miRNAs in ADSC-Exos, on the proliferation of human EpSCs and explored the mechanisms involved. MTT and BrdU incorporation assays showed that miR-100-5p mimic transfection promoted EpSC proliferation in a time-dependent manner. Cell cycle analysis showed that miR-100-5p mimic transfection significantly decreased the percentage of cells in the G1 phase and increased the percentage of cells in the G2/M phase. Myotubularin-related protein 3 (MTMR3), a lipid phosphatase, was identified as a direct target of miR-100-5p. Knockdown of MTMR3 in EpSCs by RNA interference significantly enhanced cell proliferation, decreased the percentage of cells in the G1 phase and increased the percentage of cells in the S phase. Overexpression of MTMR3 reversed the proproliferative effect of miR-100-5p on EpSCs, indicating that miR-100-5p promoted EpSC proliferation by downregulating MTMR3. Mechanistic studies showed that transfection of EpSCs with miR-100-5p mimics elevated the intracellular PIP3 level, induced AKT and ERK phosphorylation, and upregulated cyclin D1, E1, and A2 expression, which could be attenuated by MTMR3 overexpression. Consistently, intradermal injection of ADSC-Exos or miR-100-5p-enriched ADSC-Exos into cultured human skin tissues significantly reduced MTMR3 expression and increased the thickness of the epidermis and the number of EpSCs in the basal layer of the epidermis. The aforementioned effect of miR-100-5p-enriched ADSC-Exos was stronger than that of ADSC-Exos and was reversed by MTMR3 overexpression. Collectively, our findings indicate that miR-100-5p promotes EpSC proliferation through MTMR3-mediated elevation of PIP3 and activation of AKT and ERK. miR-100-5p-enriched ADSC-Exos can be used to treat skin wound and expand EpSCs for generating epidermal autografts and engineered skin equivalents.
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Sharma P, Kumar A, Agarwal T, Dey AD, Moghaddam FD, Rahimmanesh I, Ghovvati M, Yousefiasl S, Borzacchiello A, Mohammadi A, Yella VR, Moradi O, Sharifi E. Nucleic acid-based therapeutics for dermal wound healing. Int J Biol Macromol 2022; 220:920-933. [PMID: 35987365 DOI: 10.1016/j.ijbiomac.2022.08.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/02/2022] [Accepted: 08/14/2022] [Indexed: 02/06/2023]
Abstract
Non-healing wounds have long been the subject of scientific and clinical investigations. Despite breakthroughs in understanding the biology of delayed wound healing, only limited advances have been made in properly treating wounds. Recently, research into nucleic acids (NAs) such as small-interfering RNA (siRNA), microRNA (miRNA), plasmid DNA (pDNA), aptamers, and antisense oligonucleotides (ASOs) has resulted in the development of a latest therapeutic strategy for wound healing. In this regard, dendrimers, scaffolds, lipid nanoparticles, polymeric nanoparticles, hydrogels, and metal nanoparticles have all been explored as NA delivery techniques. However, the translational possibility of NA remains a substantial barrier. As a result, different NAs must be identified, and their distribution method must be optimized. This review explores the role of NA-based therapeutics in various stages of wound healing and provides an update on the most recent findings in the development of NA-based nanomedicine and biomaterials, which may offer the potential for the invention of novel therapies for this long-term condition. Further, the challenges and potential for miRNA-based techniques to be translated into clinical applications are also highlighted.
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Affiliation(s)
- Preety Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India; Government Pharmacy College Kangra, Nagrota Bhagwan, Himachal Pradesh, India
| | - Arun Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Tarun Agarwal
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, India
| | - Asmita Deka Dey
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Farnaz Dabbagh Moghaddam
- Institute for Photonics and Nanotechnologies, National Research Council, Via Fosso del Cavaliere, 100, 00133 Rome, Italy
| | - Ilnaz Rahimmanesh
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
| | - Mahsa Ghovvati
- Department of Radiological Sciences, David Geffen School of Medicine, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Satar Yousefiasl
- School of Dentistry, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
| | - Assunta Borzacchiello
- Institute for Polymers, Composites, and Biomaterials (IPCB), National Research Council (CNR), Naples 80125, Italy
| | - Abbas Mohammadi
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Venkata Rajesh Yella
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, India
| | - Omid Moradi
- Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, 374-37515 Tehran, Iran
| | - Esmaeel Sharifi
- Department of Tissue Engineering and Biomaterials, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran.
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15
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Yu H, Wang Y, Wang D, Yi Y, Liu Z, Wu M, Wu Y, Zhang Q. Landscape of the epigenetic regulation in wound healing. Front Physiol 2022; 13:949498. [PMID: 36035490 PMCID: PMC9403478 DOI: 10.3389/fphys.2022.949498] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 07/19/2022] [Indexed: 12/13/2022] Open
Abstract
Wound healing after skin injury is a dynamic and highly coordinated process involving a well-orchestrated series of phases, including hemostasis, inflammation, proliferation, and tissue remodeling. Epigenetic regulation refers to genome-wide molecular events, including DNA methylation, histone modification, and non-coding RNA regulation, represented by microRNA (miRNA), long noncoding RNA (lncRNA), and circular RNA (circRNA). Epigenetic regulation is pervasively occurred in the genome and emerges as a new role in gene expression at the post-transcriptional level. Currently, it is well-recognized that epigenetic factors are determinants in regulating gene expression patterns, and may provide evolutionary mechanisms that influence the wound microenvironments and the entire healing course. Therefore, this review aims to comprehensively summarize the emerging roles and mechanisms of epigenetic remodeling in wound healing. Moreover, we also pose the challenges and future perspectives related to epigenetic modifications in wound healing, which would bring novel insights to accelerated wound healing.
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Affiliation(s)
| | | | | | | | | | - Min Wu
- *Correspondence: Min Wu, ; Yiping Wu, ; Qi Zhang,
| | - Yiping Wu
- *Correspondence: Min Wu, ; Yiping Wu, ; Qi Zhang,
| | - Qi Zhang
- *Correspondence: Min Wu, ; Yiping Wu, ; Qi Zhang,
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16
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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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17
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Bioactive Natural and Synthetic Polymers for Wound Repair. Macromol Res 2022. [DOI: 10.1007/s13233-022-0062-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Liu C, Ram S, Hurwitz BL. Network analysis reveals dysregulated functional patterns in type II diabetic skin. Sci Rep 2022; 12:6889. [PMID: 35477946 PMCID: PMC9046425 DOI: 10.1038/s41598-022-10652-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/05/2022] [Indexed: 11/09/2022] Open
Abstract
Skin disorders are one of the most common complications of type II diabetes (T2DM). Long-term effects of high blood glucose leave individuals with T2DM more susceptible to cutaneous diseases, but its underlying molecular mechanisms are unclear. Network-based methods consider the complex interactions between genes which can complement the analysis of single genes in previous research. Here, we use network analysis and topological properties to systematically investigate dysregulated gene co-expression patterns in type II diabetic skin with skin samples from the Genotype-Tissue Expression database. Our final network consisted of 8812 genes from 73 subjects with T2DM and 147 non-T2DM subjects matched for age, sex, and race. Two gene modules significantly related to T2DM were functionally enriched in the pathway lipid metabolism, activated by PPARA and SREBF (SREBP). Transcription factors KLF10, KLF4, SP1, and microRNA-21 were predicted to be important regulators of gene expression in these modules. Intramodular analysis and betweenness centrality identified NCOA6 as the hub gene while KHSRP and SIN3B are key coordinators that influence molecular activities differently between T2DM and non-T2DM populations. We built a TF-miRNA-mRNA regulatory network to reveal the novel mechanism (miR-21-PPARA-NCOA6) of dysregulated keratinocyte proliferation, differentiation, and migration in diabetic skin, which may provide new insights into the susceptibility of skin disorders in T2DM patients. Hub genes and key coordinators may serve as therapeutic targets to improve diabetic skincare.
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Affiliation(s)
- Chunan Liu
- Department of Biosystems Engineering, BIO5 Institute, University of Arizona, Tucson, AZ, 85721, USA
| | - Sudha Ram
- Department of Management Information Systems, BIO5 Institute, University of Arizona, Tucson, AZ, 85721, USA
| | - Bonnie L Hurwitz
- Department of Biosystems Engineering, BIO5 Institute, University of Arizona, Tucson, AZ, 85721, USA.
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19
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Xie J, Wu W, Zheng L, Lin X, Tai Y, Wang Y, Wang L. Roles of MicroRNA-21 in Skin Wound Healing: A Comprehensive Review. Front Pharmacol 2022; 13:828627. [PMID: 35295323 PMCID: PMC8919367 DOI: 10.3389/fphar.2022.828627] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 02/10/2022] [Indexed: 12/12/2022] Open
Abstract
MicroRNA-21 (miR-21), one of the early mammalian miRNAs identified, has been detected to be upregulated in multiple biological processes. Increasing evidence has demonstrated the potential values of miR-21 in cutaneous damage and skin wound healing, but lack of a review article to summarize the current evidence on this issue. Based on this review, relevant studies demonstrated that miR-21 played an essential role in wound healing by constituting a complex network with its targeted genes (i.e., PTEN, RECK. SPRY1/2, NF-κB, and TIMP3) and the cascaded signaling pathways (i.e., MAPK/ERK, PI3K/Akt, Wnt/β-catenin/MMP-7, and TGF-β/Smad7-Smad2/3). The treatment effectiveness developed by miR-21 might be associated with the promotion of the fibroblast differentiation, the improvement of angiogenesis, anti-inflammatory, enhancement of the collagen synthesis, and the re-epithelialization of the wound. Currently, miRNA nanocarrier systems have been developed, supporting the feasibility clinical feasibility of such miR-21-based therapy. After further investigations, miR-21 may serve as a potential therapeutic target for wound healing.
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Affiliation(s)
- Jie Xie
- Department of Emergency Medicine, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Weizhou Wu
- Department of Urology, Maoming People's Hospital, Guangdong, China
| | - Liying Zheng
- Postgraduate Pepartment, First Affiliated Hospital of Gannan Medical College, Ganzhou, China
| | - Xuesong Lin
- Department of Burn Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Yuncheng Tai
- Department of Burn Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Yajie Wang
- Department of Burn Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Le Wang
- Department of Burn Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
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20
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Kim H, Kim DE, Han G, Lim NR, Kim EH, Jang Y, Cho H, Jang H, Kim KH, Kim SH, Yang Y. Harnessing the Natural Healing Power of Colostrum: Bovine Milk-Derived Extracellular Vesicles from Colostrum Facilitating the Transition from Inflammation to Tissue Regeneration for Accelerating Cutaneous Wound Healing. Adv Healthc Mater 2022; 11:e2102027. [PMID: 34865307 DOI: 10.1002/adhm.202102027] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/11/2021] [Indexed: 12/17/2022]
Abstract
As wound healing is an extremely complicated process, consisting of a cascade of interlocking biological events, successful wound healing requires a multifaceted approach to support appropriate and rapid transitions from the inflammatory to proliferative and remodeling phases. In this regard, here the potential use of bovine milk extracellular vesicles (EVs) to enhance wound healing is investigated. The results show that milk EVs promote fibroblast proliferation, migration, and endothelial tube formation. In particular, milk EVs derived from colostrum (Colos EVs) contain various anti-inflammatory factors facilitating the transition from inflammation to proliferation phase, as well as factors for tissue remodeling and angiogenesis. In an excisional wound mouse model, Colos EVs promote re-epithelialization, activate angiogenesis, and enhance extracellular matrix maturation. Interestingly, Colos EVs are further found to be quite resistant to freeze-drying procedures, maintaining their original characteristics and efficacy for wound repair after lyophilization. These findings on the superior stability and excellent activity of milk Colos EVs indicate that they hold great promise to be developed as anti-inflammatory therapeutics, especially for the treatment of cutaneous wounds.
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Affiliation(s)
- Hyosuk Kim
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
| | - Da Eun Kim
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Division of Bio‐Medical Science and Technology KIST School Korea University of Science and Technology Seoul 02792 Republic of Korea
| | - Geonhee Han
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- KU‐KIST Graduate School of Converging Science and Technology Korea University Seoul 02841 Republic of Korea
| | - Nu Ri Lim
- Doping Control Center Korea Institute of Science and Technology Seoul 02792 Republic of Korea
| | - Eun Hye Kim
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Department of Life Science Korea University Seoul 02841 Republic of Korea
| | - Yeongji Jang
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Department of Life Science Korea University Seoul 02841 Republic of Korea
| | - Haeun Cho
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Department of Biotechnology Korea University Seoul 02841 Republic of Korea
| | - Hochung Jang
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Division of Bio‐Medical Science and Technology KIST School Korea University of Science and Technology Seoul 02792 Republic of Korea
| | - Ki Hun Kim
- Doping Control Center Korea Institute of Science and Technology Seoul 02792 Republic of Korea
| | - Sun Hwa Kim
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
| | - Yoosoo Yang
- Center for Theragnosis Biomedical Research Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
- Division of Bio‐Medical Science and Technology KIST School Korea University of Science and Technology Seoul 02792 Republic of Korea
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Li D, Niu G, Landén NX. Beyond the Code: Noncoding RNAs in Skin Wound Healing. Cold Spring Harb Perspect Biol 2022; 14:a041230. [PMID: 35197246 PMCID: PMC9438779 DOI: 10.1101/cshperspect.a041230] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An increasing number of noncoding RNAs (ncRNAs) have been found to regulate gene expression and protein functions, playing important roles in diverse biological processes and diseases. Their crucial functions have been reported in almost every cell type and all stages of skin wound healing. Evidence of their pathogenetic roles in common wound complications, such as chronic nonhealing wounds and excessive scarring, is also accumulating. Given their unique expression and functional properties, ncRNAs are promising therapeutic and diagnostic entities. In this review, we discuss current knowledge about the functional roles of noncoding elements, such as microRNAs, long ncRNAs, and circular RNAs, in skin wound healing, focusing on in vivo evidence from studies of human wound samples and animal wound models. Finally, we provide a perspective on the outlook of ncRNA-based therapeutics in wound care.
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Affiliation(s)
- Dongqing Li
- 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
| | - Guanglin Niu
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Ning Xu Landén
- Dermatology and Venereology Division, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, 17176 Stockholm, Sweden
- Ming Wai Lau Centre for Reparative Medicine, Stockholm Node, Karolinska Institute, 17177 Stockholm, Sweden
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22
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Tissue Inhibitor of Metalloproteases 3 (TIMP-3): In Vivo Analysis Underpins Its Role as a Master Regulator of Ectodomain Shedding. MEMBRANES 2022; 12:membranes12020211. [PMID: 35207132 PMCID: PMC8878240 DOI: 10.3390/membranes12020211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/29/2022] [Accepted: 02/03/2022] [Indexed: 01/06/2023]
Abstract
The proteolytical cleavage of transmembrane proteins with subsequent release of their extracellular domain, so-called ectodomain shedding, is a post-translational modification that plays an essential role in several biological processes, such as cell communication, adhesion and migration. Metalloproteases are major proteases in ectodomain shedding, especially the disintegrin metalloproteases (ADAMs) and the membrane-type matrix metalloproteases (MT-MMPs), which are considered to be canonical sheddases for their membrane-anchored topology and for the large number of proteins that they can release. The unique ability of TIMP-3 to inhibit different families of metalloproteases, including the canonical sheddases (ADAMs and MT-MMPs), renders it a master regulator of ectodomain shedding. This review provides an overview of the different functions of TIMP-3 in health and disease, with a major focus on the functional consequences in vivo related to its ability to control ectodomain shedding. Furthermore, herein we describe a collection of mass spectrometry-based approaches that have been used in recent years to identify new functions of sheddases and TIMP-3. These methods may be used in the future to elucidate the pathological mechanisms triggered by the Sorsby’s fundus dystrophy variants of TIMP-3 or to identify proteins released by less well characterized TIMP-3 target sheddases whose substrate repertoire is still limited, thus providing novel insights into the physiological and pathological functions of the inhibitor.
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Hao Y, Yang L, Liu Y, Ye Y, Wang J, Yu C, Yan H, Xing Y, Jia Z, Hu C, Zuo H, Li Y. mmu-miR-145a-5p Accelerates Diabetic Wound Healing by Promoting Macrophage Polarization Toward the M2 Phenotype. Front Med (Lausanne) 2022; 8:775523. [PMID: 34993211 PMCID: PMC8724056 DOI: 10.3389/fmed.2021.775523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/22/2021] [Indexed: 12/28/2022] Open
Abstract
Diabetic wounds are recalcitrant to healing. One of the important characteristics of diabetic trauma is impaired macrophage polarization with an excessive inflammatory response. Many studies have described the important regulatory roles of microRNAs (miRNAs) in macrophage differentiation and polarization. However, the differentially expressed miRNAs involved in wound healing and their effects on diabetic wounds remain to be further explored. In this study, we first identified differentially expressed miRNAs in the inflammation, tissue formation and reconstruction phases in wound healing using Illumina sequencing and RT-qPCR techniques. Thereafter, the expression of musculus (mmu)-miR-145a-5p (“miR-145a-5p” for short) in excisional wounds of diabetic mice was identified. Finally, expression of miR-145a-5p was measured to determine its effects on macrophage polarization in murine RAW 264.7 macrophage cells and wound healing in diabetic mice. We identified differentially expressed miRNAs at different stages of wound healing, ten of which were further confirmed by RT-qPCR. Expression of miR-145a-5p in diabetic wounds was downregulated during the tissue formation stage. Furthermore, we observed that miR-145a-5p blocked M1 macrophage polarization while promoting M2 phenotype activation in vitro. Administration of miR-145a-5p mimics during initiation of the repair phase significantly accelerated wound healing in db/db diabetic mice. In conclusion, our findings suggest that rectifying macrophage function using miR-145a-5p overexpression accelerates diabetic chronic wound healing.
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Affiliation(s)
- Yanhui Hao
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Leilei Yang
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Ying Liu
- Department of Basic Medicine, Chengde Medical College, Chengde, China
| | - Yumeng Ye
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Jiayu Wang
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Chao Yu
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Hua Yan
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yuan Xing
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Zhaoqian Jia
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Cuicui Hu
- Academy of Life Sciences, Anhui Medical University, Hefei, China
| | - Hongyan Zuo
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yang Li
- Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences (AMMS), Beijing, China.,Academy of Life Sciences, Anhui Medical University, Hefei, China
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24
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Jiang LN, Ji X, Liu W, Qi C, Zhai X. Identification of the circ_PRKDC/miR-20a-3p/RASA1 axis in regulating HaCaT keratinocyte migration. Wound Repair Regen 2021; 30:282-291. [PMID: 34897876 DOI: 10.1111/wrr.12988] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 10/20/2021] [Accepted: 11/25/2021] [Indexed: 12/11/2022]
Abstract
Migration of keratinocytes plays a crucial role in the re-epithelialization phase during wound healing. Circular RNA (circRNA) protein kinase, DNA-activated, catalytic subunit (circ_PRKDC, hsa_circ_0084443) has been identified as a regulator of keratinocyte migration. However, the molecular basis governing it remains unclear. The levels of circ_PRKDC, microRNA (miR)-20a-3p, and RAS p21 protein activator 1 (RASA1) were assessed by quantitative real-time PCR (qRT-PCR) or western blot. Subcellular localization, Actinomycin D, and Ribonuclease (RNase) R assays were performed to characterise circ_PRKDC. Cell migration was gauged by transwell and wound-healing assays. A direct relationship between miR-20a-3p and circ_PRKDC or RASA1 was verified by dual-luciferase reporter and RNA pull-down assays. Circ_PRKDC expression was reduced in wound skin during wound healing. Circ_PRKDC modulated migration of HaCaT keratinocytes. Mechanistically, circ_PRKDC directly targeted miR-20a-3p. The regulation of circ_PRKDC on HaCaT keratinocyte migration was mediated by miR-20a-3p. RASA1 was identified as a direct and functional target of miR-20a-3p, and miR-20a-3p-mediated inhibition of RASA1 impacted HaCaT keratinocyte migration. Circ_PRKDC acted as a post-transcriptional modulator of RASA1 expression through miR-20a-3p. Moreover, circ_PRKDC modulated migration of HaCaT keratinocytes by RASA1. Our findings demonstrated a novel molecular basis, the miR-20a-3p/RASA1 axis, for the regulation of circ_PRKDC on HaCaT keratinocyte migration.
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Affiliation(s)
- Li-Na Jiang
- Department of Plastic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaohui Ji
- Department of Pathology, The People's Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - Wei Liu
- Department of Breast Surgery, The People's Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - Chuanchuan Qi
- Department of Breast Surgery, The People's Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - Xiaomei Zhai
- Department of Plastic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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25
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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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26
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Circ_0084443 Inhibits Wound Healing Via Repressing Keratinocyte Migration Through Targeting the miR-17-3p/FOXO4 Axis. Biochem Genet 2021; 60:1236-1252. [PMID: 34837127 DOI: 10.1007/s10528-021-10157-5] [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: 07/21/2021] [Accepted: 11/10/2021] [Indexed: 10/19/2022]
Abstract
Keratinocyte migration is a crucial process during skin wound healing, and circular RNAs are associated with keratinocyte migration. The purpose of our study was to clarify the role of circ_0084443 in wound healing. The levels of circ_0084443, microRNA (miR)-17-3p, and forkhead box protein O4 (FOXO4) were examined by quantitative reverse transcription-PCR. Cell migration was detected via wound scratch assay or transwell assay. The protein expression was measured using western blot. The binding analysis between miR-17-3p and circ_0084443 or FOXO4 was determined by dual-luciferase reporter assay and RNA Immunoprecipitation assay. TGF-β1 decreased the levels of circ_0084443 and FOXO4 while increased the miR-17-3p expression in keratinocytes by a concentration-dependent manner. Circ_0084443 acted as a miR-17-3p sponge and circ_0084443 overexpression alleviated TGF-β1-induced migration of keratinocytes by sponging miR-17-3p. FOXO4 was a target for miR-17-3p. The downregulation of miR-17-3p suppressed cell migration in TGF-β1-induced cells by increasing the FOXO4 level. Circ_0084443 positively regulated the FOXO4 expression by sponging miR-17-3p. Circ_0084443 suppressed the TGFβ signaling pathway by affecting the miR-17-3p/FOXO4 axis. These results exhibited that circ_0084443 suppressed the TGF-β1-induced keratinocyte migration by regulating the miR-17-3p/FOXO4 axis, suggesting the application potential of circ_0084443 in wound-healing-related diseases.
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27
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Manetti AC, Maiese A, Baronti A, Mezzetti E, Frati P, Fineschi V, Turillazzi E. MiRNAs as New Tools in Lesion Vitality Evaluation: A Systematic Review and Their Forensic Applications. Biomedicines 2021; 9:1731. [PMID: 34829960 PMCID: PMC8615694 DOI: 10.3390/biomedicines9111731] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
Abstract
Wound vitality demonstration is one of the most challenging fields in forensic pathology. In recent years, researchers focused on the application of histological and immunohistochemical staining in this sphere of study. It is based on the detection of inflammation, red cell infiltration, and tissue alterations at the histological examination, all of which are supposedly present in antemortem rather than post-mortem wounds. Nevertheless, some doubts about the reliability of those markers have arisen. Furthermore, the lack of a standardized protocol and the operator dependency of this approach make the proper interpretation of its results difficult. Moreover, a differential miRNAs expression has been demonstrated in antemortem and post-mortem wounds. Herein, a systematic review concerning the current knowledge about the use of miRNAs in lesion vitality evaluation is carried out, to encourage researchers to deepen this peculiar study area. A compendium about the potential miRNAs that may be further investigated as vitality markers is also provided. The aim is to collect all available data about this topic to direct further studies on this field and highlight the future applications of miRNAs in forensic pathology. We found 20 articles and a total of 51 miRNAs that are involved in inflammation and wound healing. Further studies are certainly needed to deepen the role of miRNAs in inflammatory processes in lesioned skin and to evaluate their reliability in distinguishing between antemortem and post-mortem lesions.
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Affiliation(s)
- Alice Chiara Manetti
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Section of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (A.C.M.); (A.M.); (A.B.); (E.M.); (E.T.)
| | - Aniello Maiese
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Section of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (A.C.M.); (A.M.); (A.B.); (E.M.); (E.T.)
| | - Arianna Baronti
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Section of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (A.C.M.); (A.M.); (A.B.); (E.M.); (E.T.)
| | - Eleonora Mezzetti
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Section of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (A.C.M.); (A.M.); (A.B.); (E.M.); (E.T.)
| | - Paola Frati
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00186 Rome, Italy;
| | - Vittorio Fineschi
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00186 Rome, Italy;
| | - Emanuela Turillazzi
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, Section of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (A.C.M.); (A.M.); (A.B.); (E.M.); (E.T.)
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28
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Brahmbhatt HD, Gupta R, Gupta A, Rastogi S, Subramani D, Mobeen A, Batra VV, Singh A. Differential regulation of miR-21-5p delays wound healing of melanocyte-deprived vitiligo skin by modulating the expression of tumor-suppressors PDCD4 and Maspin. J Cell Physiol 2021; 237:1429-1439. [PMID: 34687038 DOI: 10.1002/jcp.30614] [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: 05/18/2021] [Revised: 09/07/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022]
Abstract
The loss of melanocytes in vitiligo is associated with architectural, transcriptional, and cellular perturbations of keratinocytes and manifests as a reduced proliferation potential in vitro and delayed re-epithelialization in vivo. To understand the molecular mechanisms underlying this delay, microRNA (miRNA) profiling was performed on split skin biopsies collected on Day 1 (basal level) and Day 14 (wound re-epithelialization) from nonlesional (NL) and lesional (L) skin of five subjects with stable nonsegmental vitiligo and 129 miRNAs were found to be differentially regulated between the NL and L healed epidermis. miR-21-5p, expressed at comparable levels on NL and L Day 1 samples, demonstrated significant upregulation during re-epithelialization. However, the extent of its upregulation was relatively lower in L (10 times compared to Day 1) as compared to NL skin (17 times compared to Day 1). The overexpression of miR-21 in keratinocytes led to a significant increase in the expression of proliferation markers (Ki67 and MCM6 messenger RNA, Ki67 positivity), along with an increase in keratinocyte migration. Using a small interfering RNA mediated knockdown approach, we further demonstrated that miR-21-5p mediates its effects by suppressing the expression of programmed cell death 4 (PDCD4) and mammary serine protease inhibitor (Maspin), both tumor-suppressor genes. Investigation of clinical samples corroborated the lower miR-21 levels and a higher expression of PDCD4 and Maspin in L Day 14 compared to the NL Day 14 epidermis. In conclusion, this study revealed that a relatively lower upregulation of miR-21-5p in L skin leads to significantly higher levels of PDCD4 and Maspin, delaying wound re-epithelialization by reducing the proliferation and migration of keratinocytes.
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Affiliation(s)
- Hemang D Brahmbhatt
- Skin Biology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rohit Gupta
- Skin Biology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Aayush Gupta
- Department of Dermatology, Dr. D. Y. Patil Medical College Hospital and Research Centre, Dr. D.Y. Patil University, Pimpri, Pune, Maharashtra, India
| | - Soumya Rastogi
- Skin Biology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Dharshini Subramani
- Department of Dermatology, Dr. D. Y. Patil Medical College Hospital and Research Centre, Dr. D.Y. Patil University, Pimpri, Pune, Maharashtra, India
| | - Ahmed Mobeen
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,G.N. Ramachandran Knowledge Centre, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Vineeta V Batra
- Department of Pathology, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research, New Delhi, India
| | - Archana Singh
- Skin Biology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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29
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Staufer O, Dietrich F, Rimal R, Schröter M, Fabritz S, Boehm H, Singh S, Möller M, Platzman I, Spatz JP. Bottom-up assembly of biomedical relevant fully synthetic extracellular vesicles. SCIENCE ADVANCES 2021; 7:eabg6666. [PMID: 34516902 PMCID: PMC8442894 DOI: 10.1126/sciadv.abg6666] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Extracellular vesicles (EVs) are fundamental for intercellular communication and influence nearly every process in cell physiology. However, because of their intricate molecular complexity, quantitative knowledge on their signaling mechanisms is missing, particularly impeding their therapeutic application. We used a complementary and quantitative engineering approach based on sequential synthetic bottom-up assembly of fully functional EVs with precisely controlled lipid, protein, and RNA composition. We show that the functionalities of synthetic EVs are analogous to natural EVs and demonstrate their programmable therapeutic administration for wound healing and neovascularization therapy. We apply transcriptome profiling to systematically decode synergistic effects between individual EV constituents, enabling analytical dissection and a fundamental understanding of EV signaling.
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Affiliation(s)
- Oskar Staufer
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
- Max Planck-Bristol Center for Minimal Biology, University of Bristol, 1 Tankard’s Close, Bristol BS8 1TD, UK
- Max Planck School Matter to Life, Jahnstraße 29, 69120 Heidelberg, Germany
- Corresponding author. (O.S.); (I.P.); (J.P.S.)
| | - Franziska Dietrich
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
| | - Rahul Rimal
- DWI-Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52056 Aachen, Germany
| | - Martin Schröter
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
| | - Sebastian Fabritz
- Department for Chemical Biology, Max Planck Institute for Medical Research, Jahnstraße 29, D-69120 Heidelberg, Germany
| | - Heike Boehm
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
- Max Planck School Matter to Life, Jahnstraße 29, 69120 Heidelberg, Germany
| | - Smriti Singh
- DWI-Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52056 Aachen, Germany
| | - Martin Möller
- Max Planck School Matter to Life, Jahnstraße 29, 69120 Heidelberg, Germany
- DWI-Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52056 Aachen, Germany
| | - Ilia Platzman
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
- Max Planck-Bristol Center for Minimal Biology, University of Bristol, 1 Tankard’s Close, Bristol BS8 1TD, UK
- Corresponding author. (O.S.); (I.P.); (J.P.S.)
| | - Joachim Pius Spatz
- Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Institute for Molecular Systems Engineering (IMSE), Heidelberg University, 69120 Heidelberg, Germany
- Max Planck-Bristol Center for Minimal Biology, University of Bristol, 1 Tankard’s Close, Bristol BS8 1TD, UK
- Max Planck School Matter to Life, Jahnstraße 29, 69120 Heidelberg, Germany
- Corresponding author. (O.S.); (I.P.); (J.P.S.)
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30
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Zhao J, Wang F, Tian Q, Dong J, Chen L, Hu R. Involvement of miR-214-3p/FOXM1 Axis During the Progression of Psoriasis. Inflammation 2021; 45:267-278. [PMID: 34427853 DOI: 10.1007/s10753-021-01544-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 08/13/2021] [Indexed: 11/25/2022]
Abstract
Psoriasis is a common, chronic, and relapsing skin disease characterized by hyperproliferation of keratinocytes and apoptosis delay. However, the molecular mechanisms underlying the progression of psoriasis remain elusive. MicroRNAs (miRNAs) are single-stranded, small non-coding RNAs that play a crucial role in the development of psoriasis by promoting targeted mRNA degradation or translational inhibition. Here, we report that miR-214-3p, one of the downregulated miRNAs identified in the skin of psoriatic patients and imiquimod (IMQ)-induced mouse models, can negatively regulate the expression of forkhead box M1 (FOXM1). miR-214-3p inhibition leads to hyperproliferation and increased apoptosis of keratinocytes in vitro. Moreover, we show that miR-214-3p inhibition causes an arrest of the cell cycle at the S stage by elevating the expression of NEK2, KIF20A, CENP-A, CENP-F, and Cyclin B1 and by reducing the expression of Cyclin D1 in HaCaT cells. In vivo, the administration of miR-214-3p attenuates the psoriasis-like phenotype in IMQ-induced mice. Collectively, our results suggest that miR-214-3p/FOXM1 axis in keratinocytes could be a novel target in the treatment of psoriasis.
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Affiliation(s)
- Jin Zhao
- Department of Dermatology, Wuhan No 1 Hospital, Wuhan, China
| | - Fei Wang
- College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, China
| | - Qingjun Tian
- Department of Dermatology, Wuhan No 1 Hospital, Wuhan, China
| | - Jing Dong
- Department of Dermatology, Wuhan No 1 Hospital, Wuhan, China
| | - Liuqing Chen
- Department of Dermatology, Wuhan No 1 Hospital, Wuhan, China. .,Department of Deramatology, Wuhan No 1 Hospital, Wuhan, China.
| | - Rongyi Hu
- Department of Dermatology, Wuhan No 1 Hospital, Wuhan, China. .,Department of Deramatology, Wuhan No 1 Hospital, Wuhan, China.
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31
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Miao F, Li Y, Tai Z, Zhang Y, Gao Y, Hu M, Zhu Q. Antimicrobial Peptides: The Promising Therapeutics for Cutaneous Wound Healing. Macromol Biosci 2021; 21:e2100103. [PMID: 34405955 DOI: 10.1002/mabi.202100103] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/31/2021] [Indexed: 12/12/2022]
Abstract
Chronic wound infections have caused an increasing number of deaths and economic burden, which necessitates wound treatment options. Hitherto, the development of functional wound dressings has achieved reasonable progress. Antibacterial agents, growth factors, and miRNAs are incorporated in different wound dressings to treat various types of wounds. As an effective antimicrobial agent and emerging wound healing therapeutic, antimicrobial peptides (AMPs) have attracted significant attention. The present study focuses on the application of AMPs in wound healing and discusses the types, properties and formulation strategies of AMPs used for wound healing. In addition, the clinical trial and the current status of studies on "antimicrobial peptides and wound healing" are elaborated through bibliometrics. Also, the challenges and opportunities for further development and utilization of AMP formulations in wound healing are discussed.
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Affiliation(s)
- Fengze Miao
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.,Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China.,National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Ying Li
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.,Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China
| | - Zongguang Tai
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.,Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China
| | - Yong Zhang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Yue Gao
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Menghong Hu
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.,Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China.,National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Quangang Zhu
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.,Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China
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32
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Hamdan Y, Mazini L, Malka G. Exosomes and Micro-RNAs in Aging Process. Biomedicines 2021; 9:biomedicines9080968. [PMID: 34440172 PMCID: PMC8393989 DOI: 10.3390/biomedicines9080968] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/06/2021] [Accepted: 07/15/2021] [Indexed: 12/14/2022] Open
Abstract
Exosomes are the main actors of intercellular communications and have gained great interest in the new cell-free regenerative medicine. These nanoparticles are secreted by almost all cell types and contain lipids, cytokines, growth factors, messenger RNA, and different non-coding RNA, especially micro-RNAs (mi-RNAs). Exosomes' cargo is released in the neighboring microenvironment but is also expected to act on distant tissues or organs. Different biological processes such as cell development, growth and repair, senescence, migration, immunomodulation, and aging, among others, are mediated by exosomes and principally exosome-derived mi-RNAs. Moreover, their therapeutic potential has been proved and reinforced by their use as biomarkers for disease diagnostics and progression. Evidence has increasingly shown that exosome-derived mi-RNAs are key regulators of age-related diseases, and their involvement in longevity is becoming a promising issue. For instance, mi-RNAs such as mi-RNA-21, mi-RNA-29, and mi-RNA-34 modulate tissue functionality and regeneration by targeting different tissues and involving different pathways but might also interfere with long life expectancy. Human mi-RNAs profiling is effectively related to the biological fluids that are reported differently between young and old individuals. However, their underlying mechanisms modulating cell senescence and aging are still not fully understood, and little was reported on the involvement of mi-RNAs in cell or tissue longevity. In this review, we summarize exosome biogenesis and mi-RNA synthesis and loading mechanism into exosomes' cargo. Additionally, we highlight the molecular mechanisms of exosomes and exosome-derived mi-RNA regulation in the different aging processes.
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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: 169] [Impact Index Per Article: 56.3] [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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Yang GH, Lee YB, Kang D, Choi E, Nam Y, Lee KH, You HJ, Kang HJ, An SH, Jeon H. Overcome the barriers of the skin: exosome therapy. Biomater Res 2021; 25:22. [PMID: 34217362 PMCID: PMC8254055 DOI: 10.1186/s40824-021-00224-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/23/2021] [Indexed: 01/06/2023] Open
Abstract
Exosomes are nano-sized cargos with a lipid bilayer structure carrying diverse biomolecules including lipids, proteins, and nucleic acids. These small vesicles are secreted by most types of cells to communicate with each other. Since exosomes circulate through bodily fluids, they can transfer information not only to local cells but also to remote cells. Therefore, exosomes are considered potential biomarkers for various treatments. Recently, studies have shown the efficacy of exosomes in skin defects such as aging, atopic dermatitis, and wounds. Also, exosomes are being studied to be used as ingredients in commercialized skin treatment products. In this review, we discussed the need for exosomes in skin therapy together with the current challenges. Moreover, the functional roles of exosomes in terms of skin treatment and regeneration are overviewed. Finally, we highlighted the major limitations and the future perspective in exosome engineering.
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Affiliation(s)
- Gi Hoon Yang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Yoon Bum Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea
| | - Donggu Kang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Eunjeong Choi
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Yoonju Nam
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Kyoung Ho Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea
| | - Hi-Jin You
- Department of Plastic Surgery, Korea University Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-Do, 15355, South Korea
| | - Hyo Jin Kang
- Biomedical Research Center, Korea University Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-Do, 15355, South Korea
| | - Sang Hyun An
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea.
| | - Hojun Jeon
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea.
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Ross K. MiR equal than others: MicroRNA enhancement for cutaneous wound healing. J Cell Physiol 2021; 236:8050-8059. [PMID: 34160067 DOI: 10.1002/jcp.30485] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 06/01/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
Keratinocyte migration is vital in the re-epithelialisation of the skin during wound healing. Multiple factors conspire to impair closure of chronic wounds such as diabetic foot ulcers, venous leg ulcers and pressure wounds. Despite deep mechanistic understanding of microRNA (miRNA) biogenesis and function, the translational potential of these small genetic molecules has not been exploited to promote wound repair. In this review, I focus on miRNAs whose importance for wound healing stems from their impact on epidermal keratinocyte behaviour. These include miR-21-5p, miR-31-5p, miR-132-3p, miR-19b, miR-20a, miR-184, miR-129-5p and miR-335-5p which regulate diverse aspect of keratinocyte biology such as migration, proliferation, differentiation, inflammation and wound closure. A combinatorial approach where two or more miRNA mimics targeting distinct but complementary wound healing processes is proposed as this may enhance wound repair more effectively than any single miRNA mimic alone.
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Affiliation(s)
- Kehinde Ross
- School of Pharmacy and Biomolecular Science, Liverpool John Moores University, Liverpool, England, UK
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Therapeutic effect of mesenchymal stem cells on histopathological, immunohistochemical, and molecular analysis in second-grade burn model. Stem Cell Res Ther 2021; 12:308. [PMID: 34051875 PMCID: PMC8164255 DOI: 10.1186/s13287-021-02365-y] [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: 02/10/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
Background and aim Deleterious cutaneous tissue damages could result from exposure to thermal trauma, which could be ameliorated structurally and functionally through therapy via the most multipotent progenitor bone marrow mesenchymal stem cells (BM-MSCs). This study aimed to induce burns and examine the effect of BM-MSCs during a short and long period of therapy. Material and methods Ninety albino rats were divided into three groups: group I (control); group II (burn model), the animals were exposed to the preheated aluminum bar at 100°C for 15 s; and group III (the burned animals subcutaneously injected with BM-MSCs (2×106 cells/ ml)); they were clinically observed and sacrificed at different short and long time intervals, and skin samples were collected for histopathological and immunohistochemical examination and analysis of different wound healing mediators via quantitative polymerase chain reaction (qPCR). Results Subcutaneous injection of BM-MSCs resulted in the decrease of the wound contraction rate; the wound having a pinpoint appearance and regular arrangement of the epidermal layer with thin stratum corneum; decrease in the area percentages of ADAMs10 expression; significant downregulation of transforming growth factor-β (TGF-β), interleukin-6 (IL-6), tumor necrotic factor-α (TNF-α), metalloproteinase-9 (MMP-9), and microRNA-21; and marked upregulation of heat shock protein-90α (HSP-90α) especially in late stages. Conclusion BM-MSCs exhibited a powerful healing property through regulating the mediators of wound healing and restoring the normal skin structures, reducing the scar formation and the wound size.
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Wang Q, Song F, Dong J, Qiao L. Transient exposure to elevated glucose levels causes persistent changes in dermal microvascular endothelial cell responses to injury. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:758. [PMID: 34268371 PMCID: PMC8246238 DOI: 10.21037/atm-20-7617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/10/2021] [Indexed: 01/23/2023]
Abstract
Background The purpose of this study was to determine whether elevated glucose can induce a dermal microvascular endothelial cell metabolic memory, thus affecting angiogenesis in the repair process of mammalian cutaneous wound. We hypothesized that transient elevated glucose levels cause sustained alteration of endothelial cell responses to injury and persistent epigenetic changes in gene expression. Methods Human dermal microvascular endothelial cells were exposed to experimental conditions with or without 30 mM D-glucose. The control group was maintained at 5 mM D-glucose; while in the transient glucose group, after being exposed to 30 mM D-glucose for two days, then being put under the control conditions during the experiment. Besides, in the whole process of the experiment, the chronic glucose group was kept in the condition with 30 mM D-glucose. Proliferation, migration, tube formation, gene expression and histone methylation were assessed for individual conditions. Results Transient elevated glucose caused sustained effects on endothelial cell migration, tube formation and TIMP3 gene expression. The effects on TIMP3 expression were associated with persistent changes in histone modification at the 5' end of the TIMP3 gene, suggesting an epigenetic effect. Conclusions Hyperglycemia induced metabolic memory could promote the regulation of TIMP3, and it can be used as a possible innovative molecular target for therapeutic intervention in the treatment of chronic non-healing diabetic wounds.
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Affiliation(s)
- Qiuyun Wang
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Fei Song
- Burn Institute, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiaoyun Dong
- Burn Institute, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Liang Qiao
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Liu SC, Bamodu OA, Kuo KT, Fong IH, Lin CC, Yeh CT, Chen SG. Adipose-derived stem cell induced-tissue repair or wound healing is mediated by the concomitant upregulation of miR-21 and miR-29b expression and activation of the AKT signaling pathway. Arch Biochem Biophys 2021; 705:108895. [PMID: 33933426 DOI: 10.1016/j.abb.2021.108895] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Adipose-derived stem cells (ADSCs), a subpopulation of mesenchymal stem cells, are characterized by their potential to differentiate into multiple cell lineages. Due to their abundance and relative ease of procurement, ADSCs are widely used for tissue repair and regeneration. However, the molecular mechanisms of the therapeutic effect of ADSCs remain unknown. METHODS MicroRNAs have emerged as important signaling molecules in skin wound healing, and their roles in ADSC-based therapies must be addressed. Here, we investigated the potential of ADSCs in improving cutaneous wound healing in vitro and in vivo. RESULTS We simulated the microenvironment of the wound site by coculturing human dermal fibroblasts (HDFs) with ADSCs. We found that cocultured HDFs expressed significantly higher levels of miR-29b and miR-21 and had higher proliferation and migration rates than ADSCs cultured without HDFs. Moreover, increased expression of Collagen Type I Alpha 1 Chain (COL1A1), Collagen Type III Alpha 1 Chain (COL3A1), alpha-smooth muscle actin (α-SMA), vascular endothelial growth factor (VEGF), and Phosphoinositide 3-kinase (PI3K), p-Akt and decreased expression of Phosphatase and tensin homolog (PTEN) and matrix metalloproteinase (MMP)-1 was detected, suggesting extracellular remodeling and fibroblast activation and proliferation. We validated the in vitro results by using a rodent skin excisional wound model and implanted ADSC sheets in the wound. Compared with the controls, wounds implanted with ADSC sheets had significantly higher rates of wound-closure; increased expression of α-SMA, VEGF, PI3k, PTEN, COL1A1, and COL3A1; decreased expression of PTEN and MMP1; and upregulated levels of miR-29b and miR-21 in the skin. CONCLUSION In summary, we evidenced that ADSCs facilitate the increase in miR-29b and miR-21 levels and promote the activation and proliferation of dermal fibroblasts and extracellular matrix (ECM) remodeling, with the associated release of VEGF. Thus, the ADSC-mediated increase in microRNAs is essential in tissue repair and has a therapeutic potential in cutaneous wound healing.
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Affiliation(s)
- Shao-Cheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 114, Taiwan.
| | - Oluwaseun Adebayo Bamodu
- Department of Medical Research & Education, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan; Department of Hematology and Oncology, Cancer Center, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan.
| | - Kuang-Tai Kuo
- Division of Thoracic Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Division of Thoracic Surgery, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Iat-Hang Fong
- Department of Medical Research & Education, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan; Department of Hematology and Oncology, Cancer Center, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan.
| | - Chih-Cheng Lin
- Department of Biotechnology and Pharmaceutical, Yuanpei University of Medical Technology, No. 306, Yuanpei Street, Hsinchu, Taiwan.
| | - Chi-Tai Yeh
- Department of Medical Research & Education, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan; Department of Hematology and Oncology, Cancer Center, Taipei Medical University - Shuang Ho Hospital, New Taipei City, 235, Taiwan; Department of Biotechnology and Pharmaceutical, Yuanpei University of Medical Technology, No. 306, Yuanpei Street, Hsinchu, Taiwan.
| | - Shyi-Gen Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan; Division of Plastic and Reconstructive Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
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MicroRNAs in shaping the resolution phase of inflammation. Semin Cell Dev Biol 2021; 124:48-62. [PMID: 33934990 DOI: 10.1016/j.semcdb.2021.03.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/28/2021] [Accepted: 03/29/2021] [Indexed: 12/19/2022]
Abstract
Inflammation is a host defense mechanism orchestrated through imperative factors - acute inflammatory responses mediated by cellular and molecular events leading to activation of defensive immune subsets - to marginalize detrimental injury, pathogenic agents and infected cells. These potent inflammatory events, if uncontrolled, may cause tissue damage by perturbing homeostasis towards immune dysregulation. A parallel host mechanism operates to contain inflammatory pathways and facilitate tissue regeneration. Thus, resolution of inflammation is an effective moratorium on the pro-inflammatory pathway to avoid the tissue damage inside the host and leads to reestablishment of tissue homeostasis. Dysregulation of the resolution pathway can have a detrimental impact on tissue functionality and contribute to the diseased state. Multiple reports have suggested peculiar dynamics of miRNA expression during various pro- and anti-inflammatory events. The roles of miRNAs in the regulation of immune responses are well-established. However, understanding of miRNA regulation of the resolution phase of events in infection or wound healing models, which is sometimes misconstrued as anti-inflammatory signaling, remains limited. Due to the deterministic role of miRNAs in pro-inflammatory and anti-inflammatory pathways, in this review we have provided a broad perspective on the putative role of miRNAs in the resolution of inflammation and explored their imminent role in therapeutics.
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Alimoradi N, Firouzabadi N, Fatehi R. How metformin affects various malignancies by means of microRNAs: a brief review. Cancer Cell Int 2021; 21:207. [PMID: 33849540 PMCID: PMC8045276 DOI: 10.1186/s12935-021-01921-z] [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: 01/08/2021] [Accepted: 04/07/2021] [Indexed: 12/15/2022] Open
Abstract
Metformin known as the first-line orally prescribed drug for lowering blood glucose in type II diabetes (T2DM) has recently found various therapeutic applications including in cancer. Metformin has been studied for its influences in prevention and treatment of cancer through multiple mechanisms such as microRNA (miR) regulation. Alteration in the expression of miRs by metformin may play an important role in the treatment of various cancers. MiRs are single-stranded RNAs that are involved in gene regulation. By binding to the 3'UTR of target mRNAs, miRs influence protein levels. Irregularities in the expression of miRs that control the expression of oncogenes and tumor suppressor genes are associated with the onset and progression of cancer. Metformin may possess an effect on tumor prevention and progression by modifying miR expression and downstream pathways. Here, we summarize the effect of metformin on different types of cancer by regulating the expression of various miRs and the associated downstream molecules.
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Affiliation(s)
- Nahid Alimoradi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Firouzabadi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Reihaneh Fatehi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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Yang M, Li R, Wang X, Liu X, Zhang B, Wang Y. Preparation, characterization and wound healing effect of alginate/chitosan microcapsules loaded with polysaccharides from Nostoc Commune Vaucher. Biomed Mater 2021; 16:025015. [PMID: 33605229 DOI: 10.1088/1748-605x/abd051] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Biologically active coating materials could promote the growth of granulation tissue as auxiliary materials, while natural polysaccharides could promote vascular regeneration and wound healing. Therefore, in this study, ultrasound-assisted extract of Nostoc commune Vaucher polysaccharides (UAP) yield after the process optimization was 12.89 ± 0.24%, which was used to prepare microcapsules by emulsification and cross-linking. The effect of alginate/chitosan-UAP composite materials on wound healing in an experimental rat model for 14 d and its physical properties were evaluated. In vitro experiments indicated that the UAP microcapsule material had a porous and loose three-dimensional network structure, and had good biocompatibility and swelling properties as a wound healing material. Animal experiments indicated that UAP microcapsules could extremely significantly promote wound healing (P < 0.01), and wound closure rate reached 79.16 ± 3.91% on 14th day. Meanwhile UAP microcapsules might promote angiogenesis and granulation growth by enhancing immunity and increasing the expression of VEGF and miR-21. Therefore, the composites of UAP microcapsules have shown encouraging results as a potential dressing for wound healing.
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Affiliation(s)
- Mingjun Yang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Run Li
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Xinjian Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Xiaofeng Liu
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Baigang Zhang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Yonggang Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
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Leśniak W. Epigenetic Regulation of Epidermal Differentiation. EPIGENOMES 2021; 5:1. [PMID: 34968254 PMCID: PMC8594726 DOI: 10.3390/epigenomes5010001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/19/2020] [Accepted: 12/23/2020] [Indexed: 01/22/2023] Open
Abstract
The epidermis is the outer part of the skin that protects the organism from dehydration and shields from external insults. Epidermal cells, called keratinocytes, undergo a series of morphological and metabolic changes that allow them to establish the biochemical and structural elements of an effective epidermal barrier. This process, known as epidermal differentiation, is critical for the maintenance of the epidermis under physiological conditions and also under stress or in various skin pathologies. Epidermal differentiation relies on a highly coordinated program of gene expression. Epigenetic mechanisms, which commonly include DNA methylation, covalent histone modifications, and microRNA (miRNA) activity, modulate various stages of gene expression by altering chromatin accessibility and mRNA stability. Their involvement in epidermal differentiation is a matter of intensive studies, and the results obtained thus far show a complex network of epigenetic factors, acting together with transcriptional regulators, to maintain epidermal homeostasis and counteract adverse effects of environmental stressors.
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Affiliation(s)
- Wiesława Leśniak
- Laboratory of Calcium Binding Proteins, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
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MicroRNAs: An Update of Applications in Forensic Science. Diagnostics (Basel) 2020; 11:diagnostics11010032. [PMID: 33375374 PMCID: PMC7823886 DOI: 10.3390/diagnostics11010032] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of non-coding RNAs containing 18–24 nucleotides that are involved in the regulation of many biochemical mechanisms in the human body. The level of miRNAs in body fluids and tissues increases because of altered pathophysiological mechanisms, thus they are employed as biomarkers for various diseases and conditions. In recent years, miRNAs obtained a great interest in many fields of forensic medicine given their stability and specificity. Several specific miRNAs have been studied in body fluid identification, in wound vitality in time of death determination, in drowning, in the anti-doping field, and other forensic fields. However, the major problems are (1) lack of universal protocols for diagnostic expression testing and (2) low reproducibility of independent studies. This review is an update on the application of these molecular markers in forensic biology.
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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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MiR-3613-3p inhibits hypertrophic scar formation by down-regulating arginine and glutamate-rich 1. Mol Cell Biochem 2020; 476:1025-1036. [PMID: 33165823 DOI: 10.1007/s11010-020-03968-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022]
Abstract
Hypertrophic scar (HS) is a severe skin disorder characterized by excessive extracellular matrix production and abnormal function of fibroblasts. Recent studies have demonstrated that microRNAs (miRNAs) play critical roles in HS formation. This study aims to investigate the role of miR-3613-3p in the formation of HS. The mRNA and miRNA levels were measured by quantitative RT-PCR analysis. The protein levels were examined by Western blot assay. Cell proliferation was determined by Cell Counting Kit-8 assay. The Caspase-3 and Caspase-9 activities were measured using flow cytometry assay. Dual-luciferase activity reporter assay and mRNA-miRNA pulldown assay were conducted to validate the target of miR-3613-3p. miR-3613-3p was downregulated, while arginine and glutamate-rich 1 (ARGLU1) was upregulated in HS fibroblasts (HSFs) and tissues. Overexpression of miR-3613-3p or knockdown of ARGLU1 markedly inhibited the expression of extracellular matrix (ECM) production-associated proteins and promoted Caspase-3 and Caspase-9 activations in HSFs. ARGLU1 was further identified as a direct target of miR-3613-3p. Restoration of ARGLU1 abrogated the suppressive effect of miR-3613-3p on cell proliferation and ECM protein expression of HSFs. Our results demonstrated that miR-3613-3p inhibited HS formation via targeting ARGLU1, which may provide potential therapeutic targets for the management of HS.
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Serum levels of miRNA-21-5p in vitiligo patients and effects of miRNA-21-5p on SOX5, beta-catenin, CDK2 and MITF protein expression in normal human melanocytes. J Dermatol Sci 2020; 101:22-29. [PMID: 33176966 DOI: 10.1016/j.jdermsci.2020.10.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 10/11/2020] [Accepted: 10/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Epigenetics of vitiligo was evaluated in few studies. In particular, the role of miR-21, a microRNA involved in various processes, including melanogenesis, was never investigated. OBJECTIVE Evaluation of serum levels of miR-21-5p in vitiligo patients and miR-21-5p effects on melanogenesis. METHODS We measured serum levels of miR-21-5p in 40 patients affected by nonsegmental vitiligo and 40 sex- and age-matched healthy controls. Next, normal human melanocytes were transfected with miR-21-5p to study the effects of this microRNA, which targeted some proteins involved in melanogenesis pathway like SOX5, beta-catenin, cyclin-dependent kinase 2 (CDK2), and MITF. RESULTS The expression of miR-21-5p in vitiligo patients was 3.6-4454.4 fold (mean 990.4 ± 1397.9) higher than in controls. The relative expression of miR-21-5p was directly and significantly correlated with disease severity, defined by VASI (Vitiligo Area and Severity Index) score (Rho = 0.89, p = 10-7), but not other individual or clinical characteristics. In the second part of the study, a significant reduction of SOX5, beta-catenin and CDK2 protein expression and increase of MITF protein expression was observed in cultured melanocytes after 24 h trasfection with miR-21-5p. CONCLUSION According to literature, miR-21-5p upregulation and consequent SOX5 downregulation should upregulate melanogenesis, while vitiligo is characterized by skin depigmentation. Our results suggest that current knowledge of the pathogenesis of vitiligo is probably incomplete. Clinical manifestations could result from an altered balance between metabolic pathways with contrasting effects. In this view, miR-21-5p upregulation might be a tentative compensation mechanism. Further studies appear necessary to confirm and better understand our results and their importance.
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Tang H, Wang X, Zhang M, Yan Y, Huang S, Ji J, Xu J, Zhang Y, Cai Y, Yang B, Lan W, Huang M, Zhang L. MicroRNA-200b/c-3p regulate epithelial plasticity and inhibit cutaneous wound healing by modulating TGF-β-mediated RAC1 signaling. Cell Death Dis 2020; 11:931. [PMID: 33122632 PMCID: PMC7596237 DOI: 10.1038/s41419-020-03132-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 12/14/2022]
Abstract
Cutaneous wound healing is pivotal for human skin to regain barrier function against pathogens. MicroRNAs (miRNAs) have been found to play regulatory roles in wound healing. However, the mechanism of miRNA regulation remains largely unknown. In this study, we focused on microRNA-200b/c-3p (miR-200b/c-3p) whose expression was abundant in intact epidermis, but dramatically decreased in skin wounds. In silico prediction identified RAC1 as a potential miR-200b/c-3p target. Luciferase reporter assay confirmed that miR-200b/c-p repressed RAC1 by direct targeting to its mRNA 3′UTR. Consistently, miR-200b/c-3p expression was discordantly related to RAC1 protein level during wound healing. Forced miR-200b/c-3p expression repressed RAC1 and inhibited keratinocyte migration as well as re-epithelialization in a mouse back skin full-thickness wound healing model. Mechanistically, miR-200b/c-3p modulated RAC1 to inhibit cell migration by repressing lamellipodia formation and intercellular adhesion dissolution in keratinocytes. Furthermore, we found that TGF-β1, which was highly expressed in skin wounds, contributed to the downregulation of miR-200b/c-3p in wound edge keratinocytes. Taken together, miR-200b/c-3p-mediated RAC1 repression inhibited keratinocyte migration to delay re-epithelialization. TGF-β1 induction attenuated miR-200b/c-3p regulation of RAC1 signaling in cutaneous wounds and the repression of miR-200b/c-3p accelerated keratinocyte migration to promote wound healing. Our data provide new insight into how miR-200b/c-3p affects keratinocyte migration and highlight the potential of miR-200b/c-3p targeting for accelerating wound healing.
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Affiliation(s)
- Huiyi Tang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Xueer Wang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Min Zhang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yuan Yan
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Simin Huang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Jiahao Ji
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Jinfu Xu
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yijia Zhang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yongjie Cai
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Bobo Yang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Wenqi Lan
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Mianbo Huang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China.
| | - Lin Zhang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, People's Republic of China.
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Mechanistic Actions of microRNAs in Diabetic Wound Healing. Cells 2020; 9:cells9102228. [PMID: 33023156 PMCID: PMC7601058 DOI: 10.3390/cells9102228] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/25/2020] [Accepted: 09/30/2020] [Indexed: 02/06/2023] Open
Abstract
Wound healing is a complex biological process that is impaired under diabetes conditions. Chronic non-healing wounds in diabetes are some of the most expensive healthcare expenditures worldwide. Early diagnosis and efficacious treatment strategies are needed. microRNAs (miRNAs), a class of 18–25 nucleotide long RNAs, are important regulatory molecules involved in gene expression regulation and in the repression of translation, controlling protein expression in health and disease. Recently, miRNAs have emerged as critical players in impaired wound healing and could be targets for potential therapies for non-healing wounds. Here, we review and discuss the mechanistic background of miRNA actions in chronic wounds that can shed the light on their utilization as specific wound healing biomarkers.
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Wei P, Zhong C, Yang X, Shu F, Xiao S, Gong T, Luo P, Li L, Chen Z, Zheng Y, Xia Z. Exosomes derived from human amniotic epithelial cells accelerate diabetic wound healing via PI3K-AKT-mTOR-mediated promotion in angiogenesis and fibroblast function. BURNS & TRAUMA 2020; 8:tkaa020. [PMID: 32923490 PMCID: PMC7476545 DOI: 10.1093/burnst/tkaa020] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/16/2020] [Indexed: 12/30/2022]
Abstract
Background Diabetic wounds are one of the most common and serious complications of diabetes mellitus, characterized by the dysfunction of wound-healing-related cells in quantity and quality. Our previous studies revealed that human amniotic epithelial cells (hAECs) could promote diabetic wound healing by paracrine action. Interestingly, numerous studies demonstrated that exosomes derived from stem cells are the critical paracrine vehicles for stem cell therapy. However, whether exosomes derived from hAECs (hAECs-Exos) mediate the effects of hAECs on diabetic wound healing remains unclear. This study aimed to investigate the biological effects of hAECs-Exos on diabetic wound healing and preliminarily elucidate the underlying mechanism. Methods hAECs-Exos were isolated by ultracentrifugation and identified by transmission electron microscopy, dynamic light scattering and flow cytometry. A series of in vitro functional analyses were performed to assess the regulatory effects of hAECs-Exos on human fibroblasts (HFBs) and human umbilical vein endothelial cells (HUVECs) in a high-glycemic microenvironment. High-throughput sequencing and bioinformatics analyses were conducted to speculate the related mechanisms of actions of hAECs-Exos on HFBs and HUVECs. Subsequently, the role of the candidate signaling pathway of hAECs-Exos in regulating the function of HUVECs and HFBs, as well as in diabetic wound healing, was assessed. Results hAECs-Exos presented a cup- or sphere-shaped morphology with a mean diameter of 105.89 ± 10.36 nm, were positive for CD63 and TSG101 and could be internalized by HFBs and HUVECs. After that, hAECs-Exos not only significantly promoted the proliferation and migration of HFBs, but also facilitated the angiogenic activity of HUVECs in vitro. High-throughput sequencing revealed enriched miRNAs of hAECs-Exos involved in wound healing. Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses have shown that the target genes of the top 15 miRNAs were highly enriched in the PI3K-AKT pathway. Further functional studies demonstrated that the PI3K-AKT-mTOR pathway was necessary for the induced biological effects of hAECs-Exos on HFBs and HUVECs, as well as on wound healing, in diabetic mice. Conclusions Our findings demonstrated that hAECs-Exos represent a promising, novel strategy for diabetic wound healing by promoting angiogenesis and fibroblast function via activation of the PI3K-AKT-mTOR pathway.
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Affiliation(s)
- Pei Wei
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
| | - Chenjian Zhong
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
| | - Xiaolan Yang
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
| | - Futing Shu
- Department of Burn Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Shichu Xiao
- Department of Burn Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Teng Gong
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
| | - Pengfei Luo
- Department of Burn Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Li Li
- Department of Burn Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Zhaohong Chen
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
| | - Yongjun Zheng
- Department of Burn Surgery, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Zhaofan Xia
- Fujian Burn Institute, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China
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Liu J, Shu B, Zhou Z, Xu Y, Liu Y, Wang P, Xiong K, Xie J. Involvement of miRNA203 in the proliferation of epidermal stem cells during the process of DM chronic wound healing through Wnt signal pathways. Stem Cell Res Ther 2020; 11:348. [PMID: 32787903 PMCID: PMC7422611 DOI: 10.1186/s13287-020-01829-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/24/2020] [Accepted: 07/13/2020] [Indexed: 11/10/2022] Open
Abstract
Background The biological role of miR-203 and the underlying mechanisms on the proliferation of epidermal stem cells (ESCs) have not yet been reported during the progression of chronic wound healing in diabetes mellitus. Our previous studies have observed that the expression of miR-203 showed a marked upregulation and ESC proliferation capacity was impaired in diabetes mellitus skin wounds in rats. Methods Wound models were established in normal rats and rats with type 2 diabetes. Expression level of miR-203 and the alteration of ESCs’ number and function were detected. ESCs were isolated from the back skin of fetal rats to assess the effects of glucose in vitro. An antagomir to miR-203 was used to assess its effect on ESCs. Using microarray analysis, we further identified potential target genes and signaling pathways of miR-203. Results We found that high glucose significantly upregulated the expression of miR-203 and subsequently reduced the number of ESCs and impaired their proliferation capacity. Meanwhile, over-expression of miR-203 reduced the ESCs’ numbers and impaired the proliferation capacity via downregulation of the Notch and Wnt signaling pathways. Conversely, inhibition of miR-203 enhanced the proliferation capacity. Additionally, silencing miR-203 in skin of rats with type 2 diabetes accelerated wound healing and improved healing quality via the upregulation of the Notch and Wnt signaling pathways. Finally, over-expression of miR-203 downregulated genes ROCK2, MAPK8, MAPK9, and PRKCA. Conclusion Our findings demonstrated that induced expression of miR-203 by high glucose in type 2 diabetic rats decreased the number of ESCs and impaired ESC proliferation capacity via downregulating genes related to Notch and Wnt signaling pathways, resulting in a delayed wound healing.
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Affiliation(s)
- Jian Liu
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Bin Shu
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Ziheng Zhou
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Yingbin Xu
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Yiling Liu
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Peng Wang
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Julin Xie
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, No. 58, 2nd Zhongshan Road, Yuexiu District, Guangzhou City, 510080, Guangdong Province, People's Republic of China.
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