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Zhang J, Zhou Y, Jiang Z, He C, Wang B, Wang Q, Wang Z, Wu T, Chen X, Deng Z, Li C, Jian Z. Bioinspired polydopamine nanoparticles as efficient antioxidative and anti-inflammatory enhancers against UV-induced skin damage. J Nanobiotechnology 2023; 21:354. [PMID: 37775761 PMCID: PMC10543320 DOI: 10.1186/s12951-023-02107-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/15/2023] [Indexed: 10/01/2023] Open
Abstract
Excessive and prolonged ultraviolet radiation (UVR) exposure causes photodamage, photoaging, and photocarcinogenesis in human skin. Therefore, safe and effective sun protection is one of the most fundamental requirements. Living organisms tend to evolve various natural photoprotective mechanisms to avoid photodamage. Among them, melanin is the main functional component of the photoprotective system of human skin. Polydopamine (PDA) is synthesized as a mimic of natural melanin, however, its photoprotective efficiency and mechanism in protecting against skin damage and photoaging remain unclear. In this study, the novel sunscreen products based on melanin-inspired PDA nanoparticles (NPs) are rationally designed and prepared. We validate that PDA NPs sunscreen exhibits superior effects on photoprotection, which is achieved by the obstruction of epidermal hyperplasia, protection of the skin barrier, and resolution of inflammation. In addition, we find that PDA NPs are efficiently intake by keratinocytes, exhibiting robust ROS scavenging and DNA protection ability with minimal cytotoxicity. Intriguingly, PDA sunscreen has an influence on maintaining homeostasis of the dermis, displaying an anti-photoaging property. Taken together, the biocompatibility and full photoprotective properties of PDA sunscreen display superior performance to those of commercial sunscreen. This work provides new insights into the development of a melanin-mimicking material for sunscreens.
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Affiliation(s)
- Jia Zhang
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Yuqi Zhou
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Zhaoting Jiang
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Chenhui He
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Bo Wang
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Qi Wang
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Zeqian Wang
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Tong Wu
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Xiaoqi Chen
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China
| | - Ziwei Deng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
| | - Chunying Li
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China.
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital Fourth Military Medical University, Xi'an, 710032, P. R. China.
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Sammons MA, Nguyen TAT, McDade SS, Fischer M. Tumor suppressor p53: from engaging DNA to target gene regulation. Nucleic Acids Res 2020; 48:8848-8869. [PMID: 32797160 PMCID: PMC7498329 DOI: 10.1093/nar/gkaa666] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/24/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022] Open
Abstract
The p53 transcription factor confers its potent tumor suppressor functions primarily through the regulation of a large network of target genes. The recent explosion of next generation sequencing protocols has enabled the study of the p53 gene regulatory network (GRN) and underlying mechanisms at an unprecedented depth and scale, helping us to understand precisely how p53 controls gene regulation. Here, we discuss our current understanding of where and how p53 binds to DNA and chromatin, its pioneer-like role, and how this affects gene regulation. We provide an overview of the p53 GRN and the direct and indirect mechanisms through which p53 affects gene regulation. In particular, we focus on delineating the ubiquitous and cell type-specific network of regulatory elements that p53 engages; reviewing our understanding of how, where, and when p53 binds to DNA and the mechanisms through which these events regulate transcription. Finally, we discuss the evolution of the p53 GRN and how recent work has revealed remarkable differences between vertebrates, which are of particular importance to cancer researchers using mouse models.
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Affiliation(s)
- Morgan A Sammons
- Department of Biological Sciences and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA
| | - Thuy-Ai T Nguyen
- Genome Integrity & Structural Biology Laboratory and Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences/National Institutes of Health, 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Simon S McDade
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7AE, UK
| | - Martin Fischer
- Computational Biology Group, Leibniz Institute on Aging – Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany
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Mirgayazova R, Khadiullina R, Chasov V, Mingaleeva R, Miftakhova R, Rizvanov A, Bulatov E. Therapeutic Editing of the TP53 Gene: Is CRISPR/Cas9 an Option? Genes (Basel) 2020; 11:E704. [PMID: 32630614 PMCID: PMC7349023 DOI: 10.3390/genes11060704] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/21/2020] [Accepted: 06/23/2020] [Indexed: 12/17/2022] Open
Abstract
The TP53 gene encodes the transcription factor and oncosuppressor p53 protein that regulates a multitude of intracellular metabolic pathways involved in DNA damage repair, cell cycle arrest, apoptosis, and senescence. In many cases, alterations (e.g., mutations of the TP53 gene) negatively affect these pathways resulting in tumor development. Recent advances in genome manipulation technologies, CRISPR/Cas9, in particular, brought us closer to therapeutic gene editing for the treatment of cancer and hereditary diseases. Genome-editing therapies for blood disorders, blindness, and cancer are currently being evaluated in clinical trials. Eventually CRISPR/Cas9 technology is expected to target TP53 as the most mutated gene in all types of cancers. A majority of TP53 mutations are missense which brings immense opportunities for the CRISPR/Cas9 system that has been successfully used for correcting single nucleotides in various models, both in vitro and in vivo. In this review, we highlight the recent clinical applications of CRISPR/Cas9 technology for therapeutic genome editing and discuss its perspectives for editing TP53 and regulating transcription of p53 pathway genes.
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Affiliation(s)
- Regina Mirgayazova
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Raniya Khadiullina
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Vitaly Chasov
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Rimma Mingaleeva
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Regina Miftakhova
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Albert Rizvanov
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
| | - Emil Bulatov
- Kazan Federal University, 420008 Kazan, Russia; (R.M.); (R.K.); (V.C.); (R.M.); (R.M.); (A.R.)
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
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