scholarly journals Organotypic human skin culture models constructed with senescent fibroblasts show hallmarks of skin aging

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Regina Weinmüllner ◽  
Barbara Zbiral ◽  
Adnan Becirovic ◽  
Elena Maria Stelzer ◽  
Fabian Nagelreiter ◽  
...  
Keyword(s):  
Human Skin ◽  
Skin Aging ◽  
Skin Culture ◽  
Culture Models

scholarly journals Multiple-Molecule Drug Design Based on Systems Biology Approaches and Deep Neural Network to Mitigate Human Skin Aging

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3178
Author(s):  
Shan-Ju Yeh ◽  
Jin-Fu Lin ◽  
Bor-Sen Chen
Keyword(s):  
Neural Network ◽  
Systems Biology ◽  
Signaling Pathways ◽  
Human Skin ◽  
Deep Neural Network ◽  
Middle Age ◽  
Skin Aging ◽  
Identification System ◽  
Potential Candidate ◽  
Systems Medicine

Human skin aging is affected by various biological signaling pathways, microenvironment factors and epigenetic regulations. With the increasing demand for cosmetics and pharmaceuticals to prevent or reverse skin aging year by year, designing multiple-molecule drugs for mitigating skin aging is indispensable. In this study, we developed strategies for systems medicine design based on systems biology methods and deep neural networks. We constructed the candidate genomewide genetic and epigenetic network (GWGEN) via big database mining. After doing systems modeling and applying system identification, system order detection and principle network projection methods with real time-profile microarray data, we could obtain core signaling pathways and identify essential biomarkers based on the skin aging molecular progression mechanisms. Afterwards, we trained a deep neural network of drug–target interaction in advance and applied it to predict the potential candidate drugs based on our identified biomarkers. To narrow down the candidate drugs, we designed two filters considering drug regulation ability and drug sensitivity. With the proposed systems medicine design procedure, we not only shed the light on the skin aging molecular progression mechanisms but also suggested two multiple-molecule drugs for mitigating human skin aging from young adulthood to middle age and middle age to old age, respectively.

scholarly journals Exploring Human Skin Aging at the Single-Cell Level

2021 ◽  
Vol 56 (3) ◽  
pp. 253-254
Author(s):  
Mary Mohrin ◽  
Heinrich Jasper
Keyword(s):  
Single Cell ◽  
Human Skin ◽  
Skin Aging ◽  
Single Cell Level ◽  
Cell Level

Neuropeptides and skin aging

2013 ◽  
Vol 16 (1) ◽  
Author(s):  
Rana Elewa ◽  
Evgenia Makrantonaki ◽  
Christos C. Zouboulis
Keyword(s):  
Human Skin ◽  
Inflammatory Cytokines ◽  
Vasoactive Intestinal Polypeptide ◽  
Skin Aging ◽  
Target Cells ◽  
Hormone Metabolism ◽  
Skin Cells ◽  
Calcitonin Gene ◽  
Aged Skin ◽  
Human Skin Cells

AbstractNeuropeptides (NP) are peptides that are released as chemical messengers from nerve cells. They act either in an endocrine manner, where they reach their target cells via the bloodstream or a paracrine manner, as co-transmitters modulating the function of neurotransmitters. To date approximately 100 different NP have been described in the literature. In recent years, several studies have documented that human skin expresses several functional receptors for NP, such as corticotropin-releasing hormone, melanocortins, β-endorphin, vasoactive intestinal polypeptide, neuropeptide Y and calcitonin gene-related peptide. These receptors modulate the production of inflammatory cytokines, proliferation, differentiation, lipogenesis and hormone metabolism in human skin cells. In addition, several NP are directly produced by human skin cells, indicating the complexity of understanding the real functions of NPs in human skin. In this review we address the possible effects of neuropeptides on the pathogenesis of aged skin.

scholarly journals Assessment of Human Skin Gene Expression by Different Blends of Plant Extracts with Implications to Periorbital Skin Aging

2018 ◽  
Vol 19 (11) ◽  
pp. 3349 ◽  
Author(s):  
Jin Namkoong ◽  
Dale Kern ◽  
Helen Knaggs
Keyword(s):  
Oxidative Stress ◽  
Gene Expression ◽  
Human Skin ◽  
Barrier Function ◽  
Skin Barrier ◽  
Skin Aging ◽  
Skin Barrier Function ◽  
Oxidative Stress Biomarkers ◽  
Stress Biomarkers ◽  
And Oxidative Stress

Since the skin is the major protective barrier of the body, it is affected by intrinsic and extrinsic factors. Environmental influences such as ultraviolet (UV) irradiation, pollution or dry/cold air are involved in the generation of radical oxygen species (ROS) and impact skin aging and dermal health. Assessment of human skin gene expression and other biomarkers including epigenetic factors are used to evaluate the biological/molecular activities of key compounds in cosmetic formulas. The objective of this study was to quantify human gene expression when epidermal full-thickness skin equivalents were exposed to: (a) a mixture of betaine, pentylene glycol, Saccharomyces cerevisiae and Rhodiola rosea root extract (BlendE) for antioxidant, skin barrier function and oxidative stress (with hydrogen peroxide challenge); and (b) a mixture of Narcissus tazetta bulb extract and Schisandra chinensis fruit extract (BlendIP) for various biomarkers and microRNA analysis. For BlendE, several antioxidants, protective oxidative stress biomarkers and many skin barrier function parameters were significantly increased. When BlendE was evaluated, the negative impact of the hydrogen peroxide was significantly reduced for the matrix metalloproteinases (MMP 3 and MMP 12), the skin aging and oxidative stress biomarkers, namely FBN2, ANXA1 and HGF. When BlendIP was tested for cell proliferation and dermal structural components to enhance the integrity of the skin around the eyes: 8 growth factors, 7 signaling, 7 structural/barrier function and 7 oxidative stress biomarkers were significantly increased. Finally, when BlendIP was tested via real-time RT-PCR for microRNA expression: miR-146a, miR-22, miR155, miR16 and miR21 were all significantly increased over control levels. Therefore, human skin gene expression studies are important tools to assess active ingredient compounds such as plant extract blends to advance dermal hypotheses toward validating cosmetic formulations with botanical molecules.

scholarly journals Skin Aging and Photoaging Alter Fatty Acids Composition, Including 11,14,17-eicosatrienoic Acid, in the Epidermis of Human Skin

2010 ◽  
Vol 25 (6) ◽  
pp. 980 ◽  
Author(s):  
Eun Ju Kim ◽  
Min-Kyoung Kim ◽  
Xing-Ji Jin ◽  
Jang-Hee Oh ◽  
Ji Eun Kim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Human Skin ◽  
Eicosatrienoic Acid ◽  
Skin Aging ◽  
Fatty Acids Composition

scholarly journals Reduced DNA methylation patterning and transcriptional connectivity define human skin aging

Aging Cell ◽  
2016 ◽  
Vol 15 (3) ◽  
pp. 563-571 ◽  
Author(s):  
Felix Bormann ◽  
Manuel Rodríguez‐Paredes ◽  
Sabine Hagemann ◽  
Himanshu Manchanda ◽  
Boris Kristof ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Human Skin ◽  
Skin Aging
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