张震宇

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27 8月 2019

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Author : 伤口世界

擅长糖尿病足治疗广东药科大学附属第三医院内分泌科主任医师

Latest from 伤口世界

Radiofrequency Treatment Attenuates Age-Related Changes in Dermal–Epidermal Junctions of Animal Skin
Epidermal stem cells: skin surveillance and clinical perspective
Cutting-edge skin ageing research on tissue stem cell
Characterization of skin barrier defects using infrared spectroscopy in patients with atopic dermatitis
Changes in human skin composition due to intrinsic aging: a histologic and morphometric study

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Radiofrequency Treatment Attenuates Age-Related Changes in Dermal–Epidermal Junctions of Animal Skin 2024-12-25 00:00

Kyung-A Byun 1,2,3,†, Hyoung Moon Kim 4,† , Seyeon Oh 3 , Sosorburam Batsukh 1,3, Kuk Hui Son 5,* and Kyunghee Byun 1,3,6,*

1 Department of Anatomy & Cell Biology, College of Medicine, Gachon University, Incheon 21936, Republic of Korea

2 LIBON Inc., Incheon 22006, Republic of Korea

3 Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea

4 Maylin Anti-Aging Center Ilsan, Goyang 10391, Republic of Korea

5 Department of Thoracic and Cardiovascular Surgery, Gachon University Gil Medical Center, Gachon University, Incheon 21565, Republic of Korea

6 Department of Health Sciences and Technology, Gachon Advanced Institute for Health & Sciences and Technology (GAIHST), Gachon University, Incheon 21999, Republic of Korea

* Correspondence: 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (K.H.S.); 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (K.B.); Tel.: +82-32-460-3666 (K.H.S.); +82-32-899-6511 (K.B.)

† These authors contributed equally to this work.

Abstract: The dermal–epidermal junction (DEJ) is essential for maintaining skin structural integrity and regulating cell survival and proliferation. Thus, DEJ rejuvenation is key for skin revitalization, particularly in age-related DEJ deterioration. Radiofrequency (RF) treatment, known for its ability to enhance collagen fiber production through thermal mechanisms and increase heat shock protein (HSP) expression, has emerged as a promising method for skin rejuvenation. Additionally, RF activates Piezo1, an ion channel implicated in macrophage polarization toward an M2 phenotype and enhanced TGF-β production. This study investigated the impact of RF treatment on HSP47 and HSP90 expression, known stimulators of DEJ protein expression. Furthermore, using in vitro and aged animal skin models, we assessed whether RF-induced Piezo1 activation and the subsequent M2 polarization could counter age-related DEJ changes. The RF treatment of H2O2 -induced senescent keratinocytes upregulated the expression of HSP47, HSP90, TGF-β, and DEJ proteins, including collagen XVII. Similarly, the RF treatment of senescent macrophages increased Piezo1 and CD206 (M2 marker) expression. Conditioned media from RF-treated senescent macrophages enhanced the expression of TGF-β and DEJ proteins, such as nidogen and collagen IV, in senescent fibroblasts. In aged animal skin, RF treatment increased the expression of HSP47, HSP90, Piezo1, markers associated with M2 polarization, IL-10, and TGF-β. Additionally, RF treatment enhanced DEJ protein expression. Moreover, RF reduced lamina densa replication, disrupted lesions, promoted hemidesmosome formation, and increased epidermal thickness. Overall, RF treatment effectively enhanced DEJ protein expression and mitigated age-related DEJ structural changes by increasing HSP levels and activating Piezo1.

Keywords: aged mice skin; bipolar; dermal–epidermal junction; heat shock protein; monopolar; Piezo1; radiofrequency

Citation: Byun, K.-A.; Kim, H.M.; Oh, S.; Batsukh, S.; Son, K.H.; Byun, K. Radiofrequency Treatment Attenuates Age-Related Changes in Dermal–Epidermal Junctions of Animal Skin. Int. J. Mol. Sci. 2024, 25, 5178. https://doi.org/10.3390/ ijms25105178

Academic Editor: Terrence Piva

Received: 16 April 2024

Revised: 3 May 2024

Accepted: 7 May 2024

Published: 9 May 2024

Copyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Epidermal stem cells: skin surveillance and clinical perspective 2024-12-24 00:00

Xin Tang1†, Jiaqi Wang1†, Jiaoling Chen1†, Wanting Liu1 , Pei Qiao1 , Huiyi Quan1 , Zhiguo Li1 , Erle Dang1 , Gang Wang1* and Shuai Shao1*

Abstract

The skin epidermis is continually infuenced by a myriad of internal and external elements. At its basal layer reside epidermal stem cells, which fuels epidermal renovation and hair regeneration with powerful self-renewal ability, as well as keeping diverse signals that direct their activity under surveillance with quick response. The importance of epidermal stem cells in wound healing and immune-related skin conditions has been increasingly recognized, and their potential for clinical applications is attracting attention. In this review, we delve into recent advancements and the various physiological and psychological factors that govern distinct epidermal stem cell populations, including psychological stress, mechanical forces, chronic aging, and circadian rhythm, as well as providing an overview of current methodological approaches. Furthermore, we discuss the pathogenic role of epidermal stem cells in immune-related skin disorders and their potential clinical applications.

Keywords Epidermal stem cells, Aging, Wound healing, Immune-related skin disorders, Regeneration

† Xin Tang, Jiaqi Wang and Jiaoling Chen contributed equally to this work.

*Correspondence:

Gang Wang

该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。

Shuai Shao

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1 Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, Shannxi, China

© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modifed the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
Cutting-edge skin ageing research on tissue stem cell 2024-12-23 00:00

Received December 11, 2023; accepted February 20, 2024; published online February 26, 2024

Ryo Ichijo∗

Laboratory of Tissue Homeostasis, Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin

Kawara-cho, Sakyo-ku, Kyoto 606-8507, Japan.

∗Ryo Ichijo, Laboratory of Tissue Homeostasis, Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan. Tel.: +81-75-751-4016,

email: 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。

In developed economies, the growing number of older individuals is a pressing issue. As a result, research progress into ageing has emphasized the significance of staying healthy in one’s later years. Stem cells have a fundamental role to play in fostering diverse cell types and necessary processes for tissue repair and regeneration. Stem cells experience the effects of ageing over time, which is caused by their functional deterioration. Changes to stem cells, their niches and signals from other tissues they interact with are crucial factors in the ageing of stem cells. Progress in single-cell RNA sequencing (scRNA-seq) technology has greatly advanced stem cell research. This review examines the mechanisms of stem cell ageing, its impact on health and investigates the potential of stem cell therapy, with a special emphasis on the skin.

Graphical Abstract

Keywords: ageing, homeostasis, regeneration, single cell RNA sequencing, stem cell.

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主任医师、教授、博导，南方医科大学第三附属医院（广东省骨科医院）院长

张震宇

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