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Ageing at Molecular Level: Role of MicroRNAs. Subcell Biochem 2023; 102:195-248. [PMID: 36600135 DOI: 10.1007/978-3-031-21410-3_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The progression of age triggers a vast number of diseases including cardiovascular, cancer, and neurodegenerative disorders. Regardless of our plentiful knowledge about age-related diseases, little is understood about molecular pathways that associate the ageing process with various diseases. Several cellular events like senescence, telomere dysfunction, alterations in protein processing, and regulation of gene expression are common between ageing and associated diseases. Accumulating information on the role of microRNAs (miRNAs) suggests targeting miRNAs can aid our understanding of the interplay between ageing and associated diseases. In the present chapter, we have attempted to explore the information available on the role of miRNAs in ageing of various tissues/organs and diseases and understand the molecular mechanism of ageing.
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Soheilifar MH, Masoudi-Khoram N, Shirkavand A, Ghorbanifar S. Non-coding RNAs in photoaging-related mechanisms: a new paradigm in skin health. Biogerontology 2022; 23:289-306. [PMID: 35587318 DOI: 10.1007/s10522-022-09966-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/02/2022] [Indexed: 11/25/2022]
Abstract
The aging of skin is a biological process affected by environmental or genetic factors. Exposure to ultraviolet (UV) radiation is the main environmental factor causing skin aging. Cumulative UV-induced photodamage of the skin tissue is associated with premature cellular senescence, extracellular degradation, and inflammatory responses in photoaging processes. Non-coding RNAs (ncRNAs) are untranslated transcripts and master regulators of protein-coding genes. ncRNAs have a critical regulatory role in maintaining skin structure, skin barrier function, morphogenesis, and development. Altered ncRNA expression has been reported in various skin disorders such as photoaging and skin cancers. ncRNAs contribute to the suppression and promotion of photoaging by modulating signaling pathways such as mitogen-activated protein kinase (MAPK) pathway and regulating inflammatory cytokines, matrix metalloproteinases (MMPs), and senescence-associated genes. Elucidation of the functions of ncRNAs will improve the identification of molecular mechanisms underlying photoaging, and can be used in the development of therapeutic approaches in skin health and prevention of sun-induced aging. This review summarized the currently described ncRNAs and their functions in photoaging.
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Affiliation(s)
- Mohammad Hasan Soheilifar
- Department of Medical Laser, Medical Laser Research Center, Yara Institute, Academic Center for Education, Culture and Research (ACECR), Enghelab St, 1315795613, Tehran, Iran.
| | - Nastaran Masoudi-Khoram
- Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Afshan Shirkavand
- Department of Medical Laser, Medical Laser Research Center, Yara Institute, Academic Center for Education, Culture and Research (ACECR), Enghelab St, 1315795613, Tehran, Iran
| | - Shima Ghorbanifar
- Department of Medical Laser, Medical Laser Research Center, Yara Institute, Academic Center for Education, Culture and Research (ACECR), Enghelab St, 1315795613, Tehran, Iran
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Endothelial Cell-Derived Extracellular Vesicles Target TLR4 via miRNA-326-3p to Regulate Skin Fibroblasts Senescence. J Immunol Res 2022; 2022:3371982. [PMID: 35647205 PMCID: PMC9132672 DOI: 10.1155/2022/3371982] [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: 02/25/2022] [Accepted: 03/26/2022] [Indexed: 11/23/2022] Open
Abstract
Backgrounds Skin aging could be regulated by the aberrant expression of microRNAs. In this manuscript, we explain that endothelial cell-derived extracellular vesicles could act as supporters to deliver exogenous miR-326-3p to accelerate skin fibroblasts senescence. Methods β-galactosidase senescence staining assay, Hoechst 33258 apoptosis staining assay, and Ki67 staining assay were used to evaluate the biological function of mouse skin fibroblasts. Real-time PCR was applied to assay miRNAs and mRNAs expressions. Western blot was used to detect TLR4 protein expression. The target gene of miRNA were identified using a double luciferase reporter assay. miR-326-3p mimic/inhibitor and siRNA-TLR4 can demonstrate a nonnegligible link between miR-326-3p-TLR4 and skin aging. Results In coculture experiment, senescence endothelial cells could promote the skin fibroblasts senescence and apoptosis via extracellular vesicles pathway. In contrast, miR-326-3p mimics accelerated senescence and apoptosis of skin fibroblasts, while miR-326-3p inhibitor could dramatically delay skin fibroblasts senescence and apoptosis. TLR4 was proved to be a miR-326-3p directly target gene via double luciferase assay. After skin fibroblasts transfected with siRNA-TLR4, cellular senescence and apoptosis were significantly increased. Furthermore, the skin tissues of aging mice were shown with overexpression of miR-326-3p and decrease of TLR4 gene and protein expression levels. Conclusions Endothelial cell-derived extracellular vesicles delivery of miR-326-3p was found to have a function in skin fibroblasts via target TLR4. Therefore, endothelial cell-derived extracellular vesicles in antiaging therapies might be a new treatment way for delaying skin aging.
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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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Wagner RN, Piñón Hofbauer J, Wally V, Kofler B, Schmuth M, De Rosa L, De Luca M, Bauer JW. Epigenetic and metabolic regulation of epidermal homeostasis. Exp Dermatol 2021; 30:1009-1022. [PMID: 33600038 PMCID: PMC8359218 DOI: 10.1111/exd.14305] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/11/2021] [Accepted: 02/14/2021] [Indexed: 02/06/2023]
Abstract
Continuous exposure of the skin to environmental, mechanical and chemical stress necessitates constant self‐renewal of the epidermis to maintain its barrier function. This self‐renewal ability is attributed to epidermal stem cells (EPSCs), which are long‐lived, multipotent cells located in the basal layer of the epidermis. Epidermal homeostasis – coordinated proliferation and differentiation of EPSCs – relies on fine‐tuned adaptations in gene expression which in turn are tightly associated with specific epigenetic signatures and metabolic requirements. In this review, we will briefly summarize basic concepts of EPSC biology and epigenetic regulation with relevance to epidermal homeostasis. We will highlight the intricate interplay between mitochondrial energy metabolism and epigenetic events – including miRNA‐mediated mechanisms – and discuss how the loss of epigenetic regulation and epidermal homeostasis manifests in skin disease. Discussion of inherited epidermolysis bullosa (EB) and disorders of cornification will focus on evidence for epigenetic deregulation and failure in epidermal homeostasis, including stem cell exhaustion and signs of premature ageing. We reason that the epigenetic and metabolic component of epidermal homeostasis is significant and warrants close attention. Charting epigenetic and metabolic complexities also represents an important step in the development of future systemic interventions aimed at restoring epidermal homeostasis and ameliorating disease burden in severe skin conditions.
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Affiliation(s)
- Roland N Wagner
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Josefina Piñón Hofbauer
- EB House Austria, Research Program for Molecular Therapy of Genodermatoses, Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Verena Wally
- EB House Austria, Research Program for Molecular Therapy of Genodermatoses, Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Barbara Kofler
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Matthias Schmuth
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Laura De Rosa
- Holostem Terapie Avanzate S.r.l., Center for Regenerative Medicine "Stefano Ferrari", Modena, Italy
| | - Michele De Luca
- Center for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Johann W Bauer
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
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Lin Y, Lin M, Liu Y, Zhang J, Lai W, Xu Q, Zheng Y. Predicting miRNA-lncRNA-mRNA network in ultraviolet A-induced human skin photoaging. J Cosmet Dermatol 2020; 20:1875-1884. [PMID: 33025709 DOI: 10.1111/jocd.13760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/11/2020] [Accepted: 09/25/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND/OBJECTIVE Recent researches had reported that microRNAs (miRNAs) played a role in skin photoaging. Our previous study found that long noncoding RNA (lncRNA) expression was changed in the UVA-irradiated skin fibroblasts, but the regulating network of noncoding RNA in UV-induced skin changes has not been elucidated well. Here, we investigated the interactions of miRNA-lncRNA-mRNAs in skin photoaging mechanisms. METHODS Human dermal fibroblasts (HDFs) were irradiated with UVA at 10 J/cm2 once a day lasting for 14 days. miRNA expression profiles were detected by high-throughput sequencing. miRNAs changed significantly were identified by qRT-PCR. Functional annotation analysis and pathway enrichment were carried out using Gene Ontology and KEGG, and predicted miRNA-lncRNA-mRNA interactions were performed via bioinformatic analysis. RESULTS 34 differentially expressed miRNAs (>1.5-fold changes, P < .05) after UVA irradiation were identified to interact with distinct lncRNAs. miRNA-lncRNA-mRNA network prediction and regulatory role analysis showed that the gene expression of cellular process, cell part, and binding was mainly coordinated in UVA-irradiated fibroblasts. miRNA-lncRNA-mRNA-signal transduction pathway analysis showed that TNF signaling pathway, thyroid hormone signaling pathway, and lysosome were mainly affected after UVA irradiation. CONCLUSION miRNA-lncRNA-mRNA network played a critical part in skin photoaging. Our research provided novel insights into the repeated UVA-induced skin damage in noncoding RNA regulatory field and might help to further understand the delicate interplay of gene regulation at the noncoding RNA level in photoaged skin and UV-induced skin cancers in future researching and provide novel insights into the repeated UVA-damaging pathology and potential targets for preventing human skin photoaging.
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Affiliation(s)
- Yao Lin
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Mengbi Lin
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yufang Liu
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jie Zhang
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wei Lai
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qingfang Xu
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yue Zheng
- Department of Dermatology and Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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The Role of microRNAs in Organismal and Skin Aging. Int J Mol Sci 2020; 21:ijms21155281. [PMID: 32722415 PMCID: PMC7432402 DOI: 10.3390/ijms21155281] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/11/2020] [Accepted: 07/23/2020] [Indexed: 12/12/2022] Open
Abstract
The aging process starts directly after birth and lasts for the entire lifespan; it manifests itself with a decline in an organism’s ability to adapt and is linked to the development of age-related diseases that eventually lead to premature death. This review aims to explore how microRNAs (miRNAs) are involved in skin functioning and aging. Recent evidence has suggested that miRNAs regulate all aspects of cutaneous biogenesis, functionality, and aging. It has been noted that some miRNAs were down-regulated in long-lived individuals, such as let-7, miR-17, and miR-34 (known as longevity-related miRNAs). They are conserved in humans and presumably promote lifespan prolongation; conversely, they are up-regulated in age-related diseases, like cancers. The analysis of the age-associated cutaneous miRNAs revealed the increased expression of miR-130, miR-138, and miR-181a/b in keratinocytes during replicative senescence. These miRNAs affected cell proliferation pathways via targeting the p63 and Sirtuin 1 mRNAs. Notably, miR-181a was also implicated in skin immunosenescence, represented by the Langerhans cells. Dermal fibroblasts also expressed increased the levels of the biomarkers of aging that affect telomere maintenance and all phases of the cellular life cycle, such as let-7, miR-23a-3p, 34a-5p, miR-125a, miR-181a-5p, and miR-221/222-3p. Among them, the miR-34 family, stimulated by ultraviolet B irradiation, deteriorates collagen in the extracellular matrix due to the activation of the matrix metalloproteinases and thereby potentiates wrinkle formation. In addition to the pro-aging effects of miRNAs, the plausible antiaging activity of miR-146a that antagonized the UVA-induced inhibition of proliferation and suppressed aging-related genes (e.g., p21WAF-1, p16, and p53) through targeting Smad4 has also been noticed. Nevertheless, the role of miRNAs in skin aging is still not fully elucidated and needs to be further discovered and explained.
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Qin H, Zhang G, Zhang L. GSK126 (EZH2 inhibitor) interferes with ultraviolet A radiation-induced photoaging of human skin fibroblast cells. Exp Ther Med 2018; 15:3439-3448. [PMID: 29545866 DOI: 10.3892/etm.2018.5863] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 03/24/2017] [Indexed: 12/31/2022] Open
Abstract
Polycomb group genes (PcG) encode chromatin modification proteins that are involved in the epigenetic regulation of cell differentiation, proliferation and the aging processes. The key subunit of the PcG complex, enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2), has a central role in a variety of mechanisms, such as the formation of chromatin structure, gene expression regulation and DNA damage. In the present study, ultraviolet A (UVA) was used to radiate human dermal fibroblasts in order to construct a photo-aged cell model. Subsequently, the cell viability assay, Hoechst staining, apoptosis detection using flow cytometry, senescence-associated β-galactosidase (SA-β-gal) staining and erythrocyte exclusion experiments were performed. GSK126, a histone methylation enzyme inhibitor of EZH2, was used as an experimental factor. Results suggested that GSK126 downregulated the mRNA expression levels of EZH2 and upregulated the mRNA expression levels of BMI-1. Notably, GSK126 affected the transcription of various photoaging-related genes and thus protected against photoaging induced by UVA radiation.
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Affiliation(s)
- Haiyan Qin
- Department of Plastic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guang Zhang
- Department of Plastic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Lianbo Zhang
- Department of Plastic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Abstract
The advent of RNA interference (RNAi) technology has profoundly impacted molecular biology research and medicine but has also advanced the field of skin care. Both effector molecules of RNAi, short-interfering RNA molecules and microRNAs (miRNAs), have been explored for their relative impact and utility for treating a variety of skin conditions. These post-transcriptional RNA regulatory molecules down-modulate protein expression through targeting of the 3' untranslated regions of messenger RNAs, leading to their degradation or repression through sequestration. As researchers hunt for genetic linkages to skin diseases, miRNA regulators have emerged as key players in the biology of keratinocytes, fibroblasts, melanocytes, and other cells of the skin. Herein, we attempt to coalesce the current efforts to combat various skin disorders and diseases through the development of miRNA-based technologies.
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Affiliation(s)
- Paul Lawrence
- Biocogent, LLC, 25 Health Sciences Drive, Stony Brook, NY 11790 USA
| | - Joseph Ceccoli
- Biocogent, LLC, 25 Health Sciences Drive, Stony Brook, NY 11790 USA
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Lei L, Zeng Q, Lu J, Ding S, Xia F, Kang J, Tan L, Gao L, Kang L, Cao K, Zhou J, Xiao R, Chen J, Huang J. MALAT1 participates in ultraviolet B-induced photo-aging via regulation of the ERK/MAPK signaling pathway. Mol Med Rep 2017; 15:3977-3982. [PMID: 28487970 PMCID: PMC5436239 DOI: 10.3892/mmr.2017.6532] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 02/02/2017] [Indexed: 12/19/2022] Open
Abstract
Long non-coding RNA (lncRNA), transcripts of >200 bp in length that do not appear to exhibit any coding capacity, are important in the occurrence and development of cancer, cardiovascular and neurological diseases. However, effects of lncRNAs on photo-aging remain to be elucidated. To explore the potential effects of the lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) on photo-aging in fibroblasts, MALAT1 expression was silenced in fibroblasts using small interference RNA. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to examine MALAT1 expression in normal and silenced fibroblasts following irradiation with 60 mJ/cm2 ultraviolet B (UVB) and an ELISA assay was used to identify matrix metalloproteinase-1 (MMP-1) content in the cellular supernatant. A β-galactosidase kit was applied to measure the number of senescent cells and a western blot assay was used to detect extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 phosphorylation levels. RT-qPCR was additionally used to detect changes in MALAT1 expression following suppression of UVB-induced reactive oxygen species (ROS) generation with N-acetyl-L-cysteine (NAC). Fibroblasts irradiated with 60 mJ/cm2 UVB demonstrated increased MALAT1 expression, MMP-1 secretory volume and number of senescent cells, and greater levels of ERK, p38 and JNK phosphorylation. Following silencing of MALAT1 expression in photo-aged fibroblasts, decreases were observed in MMP-1 secretory volume, number of senescent cells and phosphorylation levels of ERK. NAC reduced ROS content, however, it did not affect MALAT1 expression. Therefore, it was concluded that MALAT1 may participate in UVB-induced photo-aging via regulation of the ERK/mitogen-activated protein kinase signaling pathway and UVB-induced MALAT1 expression is independent of ROS generation.
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Affiliation(s)
- Li Lei
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Qinghai Zeng
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Jianyun Lu
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Shu Ding
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Fang Xia
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Jian Kang
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Lina Tan
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Lihua Gao
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Liyang Kang
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Ke Cao
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Jianda Zhou
- Department of Plastic and Reconstructive Surgery, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Rong Xiao
- Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Jinhua Huang
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
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Li T, Yan X, Jiang M, Xiang L. The comparison of microRNA profile of the dermis between the young and elderly. J Dermatol Sci 2016; 82:75-83. [DOI: 10.1016/j.jdermsci.2016.01.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/19/2015] [Accepted: 01/14/2016] [Indexed: 10/22/2022]
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12
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MicroRNAs in human skin ageing. Ageing Res Rev 2014; 17:9-15. [PMID: 24784027 DOI: 10.1016/j.arr.2014.04.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/14/2014] [Accepted: 04/17/2014] [Indexed: 12/20/2022]
Abstract
The skin protects humans from the surrounding environment. Tissues undergo continuous renewal throughout an individual's lifetime; however, there is a decline in the regenerative potential of tissue with age. The accumulation of senescent cells over time probably reduces tissue regenerative capacity and contributes to the physiological ageing of the tissue itself. The mechanisms that govern ageing remain unclear and are under intense investigation, and insight could be gained by studying the mechanisms involved in cellular senescence. In vitro, keratinocytes and dermal fibroblasts undergo senescence in response to multiple cellular stresses, including the overproduction of reactive oxygen species and the shortening of telomeres, or simply by reaching the end of their replicative potential (i.e., reaching replicative senescence). Recent findings demonstrate that microRNAs play key roles in regulating the balance between a cell's proliferative capacity and replicative senescence. Here, we will focus on the molecular mechanisms regulated by senescence-associated microRNAs and their validated targets in both keratinocytes and dermal fibroblasts.
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Cha HJ, Lee KS, Lee GT, Lee KK, Hong JT, Lee SN, Jang HH, Lee JH, Park IC, Kim YR, Ahn KJ, Kwon SB, An IS, An S, Bae S. Altered miRNA expression profiles are involved in the protective effects of troxerutin against ultraviolet B radiation in normal human dermal fibroblasts. Int J Mol Med 2014; 33:957-63. [PMID: 24504083 DOI: 10.3892/ijmm.2014.1647] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 01/28/2014] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to investigate the mechanisms by which troxerutin protects cells against ultraviolet B (UVB) radiation. First, we demonstrate that pre-treatment with troxerutin protects normal human dermal fibroblasts (nHDFs) against UVB-induced cytotoxicity. As shown by migration assay and DNA repair analysis, troxerutin increased cell migration and DNA repair activity in the nHDFs. Subsequently, we analyzed microRNA (miRNA) expression profiles in the nHDFs. miRNAs are 19- to 24-nucleotide (nt) non-coding RNA molecules that regulate the translation of target genes through RNA interference. In UVB-exposed cells, miRNAs act on crucial functions, such as apoptosis and cellular senescence. miRNA expression is significantly altered during the protective process induced by phytochemicals. Therefore, understanding changes that occur in miRNA expression profiles may help to elucidate the protective mechanisms of troxerutin. We identified 11 miRNAs that were significantly (>2-fold) upregulated and 12 that were significantly downregulated (>2-fold) following treatment of the nHDFs with troxerutin. In addition, we investigated the biological functions of these miRNAs through the prediction of miRNA targets and Gene Ontology analysis of the putative targets. Overall, our findings indicate that pre-treatment with troxerutin increases the viability of UVB-exposed nHDFs through the alteration of the miRNA expression profiles.
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Affiliation(s)
- Hwa Jun Cha
- Korea Institute for Skin and Clinical Sciences and Molecular-Targeted Drug Research Center, Konkuk University, Seoul 143-701, Republic of Korea
| | - Kwang Sik Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Ghang Tai Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Kun Kook Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungcheongbuk‑do 361-763, Republic of Korea
| | - Sung Nae Lee
- Department of Cosmetology, Kyung-In Women's College, Incheon 407-740, Republic of Korea
| | - Hyun Hee Jang
- School of Art, Kyungbok University, Namyangju, Gyeonggi-do 472-948, Republic of Korea
| | - Jae Ho Lee
- Laboratory of Molecular Oncology, Cheil General Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul 100‑380, Republic of Korea
| | - In-Chul Park
- Laboratory of Functional Genomics, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Yu Ri Kim
- Department of Dermatology, Konkuk University School of Medicine, Seoul 143-701, Republic of Korea
| | - Kyu Joong Ahn
- Department of Dermatology, Konkuk University School of Medicine, Seoul 143-701, Republic of Korea
| | - Seung Bin Kwon
- Korea Institute for Skin and Clinical Sciences and Molecular-Targeted Drug Research Center, Konkuk University, Seoul 143-701, Republic of Korea
| | - In-Sook An
- Korea Institute for Skin and Clinical Sciences and Molecular-Targeted Drug Research Center, Konkuk University, Seoul 143-701, Republic of Korea
| | - Sungkwan An
- Korea Institute for Skin and Clinical Sciences and Molecular-Targeted Drug Research Center, Konkuk University, Seoul 143-701, Republic of Korea
| | - Seunghee Bae
- Korea Institute for Skin and Clinical Sciences and Molecular-Targeted Drug Research Center, Konkuk University, Seoul 143-701, Republic of Korea
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Lee GT, Cha HJ, Lee KS, Lee KK, Hong JT, Ahn KJ, An IS, An S, Bae S. Arctiin induces an UVB protective effect in human dermal fibroblast cells through microRNA expression changes. Int J Mol Med 2014; 33:640-8. [PMID: 24398562 DOI: 10.3892/ijmm.2014.1616] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 12/19/2013] [Indexed: 11/06/2022] Open
Abstract
Ultraviolet (UV) radiation induces severe alterations in the molecular and cellular components of normal human dermal fibroblast (NHDF) cells by disrupting many intracellular transduction cascades. Although UV responses have been well documented at the genome and proteome levels, UV protective effects have not been elucidated at these levels. The aim of the present study was to demonstrate that arctiin, a phytochemical isolated from the plant Arctium lappa, induced a protective effect against UVB radiation by changing microRNA (miRNA) expression profiles. Using flow cytometry, and water-soluble tetrazolium salt (WST-1)-based cell viability, wound healing, and DNA repair assays we showed that pretreatment with arctiin prior to UVB irradiation reduced UVB-induced apoptosis, cell migration defects, and DNA damage in NHDF cells. It was also found that arctiin‑induced UVB protection is associated with altered miRNA expression profiles. Bioinformatic analysis revealed that the deregulated miRNAs were functionally involved in mitogen-activated protein kinase (MAPK) signaling and cancer signaling pathways. The results suggest that arctiin acts as a UVB protective agent by altering specific miRNA expression in NHDF cells.
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Affiliation(s)
- Ghang Tai Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Hwa Jun Cha
- Molecular-Targeted Drug Research Center and Korea Institute for Skin and Clinical Sciences, Konkuk University, Seoul 143-701, Republic of Korea
| | - Kwang Sik Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Kun Kook Lee
- Songpa R&D Center, Coreana Cosmetics Co., Ltd., Cheonan, Chungcheongnam-do 330-833, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungcheongbuk-do 361-763, Republic of Korea
| | - Kyu Joong Ahn
- Department of Dermatology, Konkuk University School of Medicine, Seoul 143-701, Republic of Korea
| | - In-Sook An
- Molecular-Targeted Drug Research Center and Korea Institute for Skin and Clinical Sciences, Konkuk University, Seoul 143-701, Republic of Korea
| | - Sungkwan An
- Molecular-Targeted Drug Research Center and Korea Institute for Skin and Clinical Sciences, Konkuk University, Seoul 143-701, Republic of Korea
| | - Seunghee Bae
- Molecular-Targeted Drug Research Center and Korea Institute for Skin and Clinical Sciences, Konkuk University, Seoul 143-701, Republic of Korea
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