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https://www.readbyqxmd.com/read/30225503/icariin-and-icaritin-recover-uvb-induced-photoaging-by-stimulating-nrf2-are-and-reducing-ap-1-and-nf-%C3%AE%C2%BAb-signaling-pathways-a-comparative-study-on-uvb-irradiated-human-keratinocytes
#1
Eunson Hwang, Pei Lin, Hien T T Ngo, Wei Gao, Yu-Shuai Wang, Hong-Shan Yu, Tae-Hoo Yi
Icariin (ICA) and icaritin (ICT) exhibit many pharmacological functions including anti-osteoporosis, anti-cardiovascular, and anti-cancer activities; however, there are few comprehensive studies that track the detailed effects on UVB-induced photoaging. The recovery effects of ICA and ICT were investigated in UVB-irradiated human keratinocytes (HaCaTs). The results indicated that ICT and ICA showed strong radical scavenging activity, and the reactive oxygen species (ROS) scavenging activity of ICT was superior...
October 10, 2018: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/30130672/effects-of-quercetin-on-human-oral-keratinocytes-during-re-epithelialization-an-in-vitro-study
#2
Miyashaer Hujiahemaiti, Xiaolin Sun, Jing Zhou, Huixin Lv, Xue Li, Manlin Qi, Minghan Chi, Chunyan Li, Yanmin Zhou
BACKGROUND: The width of keratinized mucosa plays an important role in esthetic and functional outcomes of dental implants. Lack of keratinized mucosa may lead to poor oral hygiene and greater soft-tissue recession. This study aimed at assessing the potential of quercetin in promoting human oral keratinocyte (HOK) proliferation and re-epithelialization in vitro. MATERIALS AND METHODS: HOK were detected in the absence or presence of test substances. The Cell Counting Kit-8 was used to assess cell viability and proliferation capacity...
August 15, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29876372/fibroblast-and-keratinocyte-gene-expression-following-exposure-to-the-extracts-of-holy-basil-plant-ocimum-tenuiflorum-malabar-nut-plant-justicia-adhatoda-and-emblic-myrobalan-plant-phyllanthus-emblica
#3
Takao Someya, Katsura Sano, Kotaro Hara, Yoshimasa Sagane, Toshihiro Watanabe, R G S Wijesekara
This data article provides gene expression profiles, determined by using real-time PCR, of fibroblasts and keratinocytes treated with 0.01% and 0.001% extracts of holy basil plant ( Ocimum tenuiflorum ), sri lankan local name "maduruthala", 0.1% and 0.01% extracts of malabar nut plant ( Justicia adhatoda ), sri lankan local name "adayhoda" and 0.003% and 0.001% extracts of emblic myrobalan plant ( Phyllanthus emblica ), sri lankan local name "nelli", harvested in Sri Lanka. For fibroblasts, the dataset includes expression profiles for genes encoding hyaluronan synthase 1 (HAS1), hyaluronan synthase 2 (HAS2), hyaluronidase-1 (HYAL1), hyaluronidase-2 (HYAL2), versican, aggrecan, CD44, collagen, type I, alpha 1 (COL1A1), collagen, type III, alpha 1 (COL3A1), collagen, type VII, alpha 1 (COL7A1), matrix metalloproteinase 1 (MMP1), acid ceramidase, basic fibroblast growth factor (bFGF), fibroblast growth factor-7 (FGF7), vascular endothelial growth factor (VEGF), interleukin-1 alpha (IL-1α), cyclooxygenase-2 (cox2), transforming growth factor beta (TGF-β), and aquaporin 3 (AQP3)...
April 2018: Data in Brief
https://www.readbyqxmd.com/read/29847822/basic-fibroblast-growth-factor-influences-epidermal-homeostasis-of-living-skin-equivalents-through-affecting-fibroblast-phenotypes-and-functions
#4
Lujun Yang, Dangui Zhang, Hongjuan Wu, Sitian Xie, Mingjun Zhang, Bingna Zhang, Shijie Tang
AIMS: To elucidate the possible mechanisms of how basic fibroblast growth factor (bFGF) influences epidermal homeostasis in a living skin equivalent (LSE) model. METHODS: Several wound healing-related growth factors were analyzed at protein and mRNA levels for dermal fibroblasts of induced alpha-smooth muscle actin (α-SMA)-positive or α-SMA-negative phenotypes. During culturing an LSE model by seeding normal human keratinocytes on a fibroblast-populated type I collagen gel, bFGF or neutralizing antibody for keratinocyte growth factor (KGF) was added to investigate its effects on fibroblast phenotypes and, subsequently, epidermal homeostasis by histology and immunohistochemistry...
2018: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/29581863/reduced-smad2-3-activation-independently-predicts-increased-depth-of-human-cutaneous-squamous-cell-carcinoma
#5
Aidan M Rose, Lindsay C Spender, Christopher Stephen, Alastair Mitchell, William Rickaby, Susan Bray, Alan T Evans, Jasbani Dayal, Karin J Purdie, Catherine A Harwood, Charlotte M Proby, Irene M Leigh, Philip J Coates, Gareth J Inman
The incidence of cutaneous squamous cell carcinoma (cSCC) is rising. Whilst the majority are cured surgically, aggressive metastatic cSCC carry a poor prognosis. Inactivating mutations in transforming growth factor beta (TGF-β) receptors have been identified amongst genetic drivers of sporadic tumours and murine models of cSCC, suggesting a tumour suppressor function for TGF-β in normal skin. However, paradoxically, TGF-β acts as a tumour promoter in some murine model systems. Few studies have analysed the role of TGF-β/activin signalling in human normal skin, hyper-proliferative skin disorders and cSCC...
March 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29577907/possible-role-of-ginsenoside-rb1-in-skin-wound-healing-via-regulating-senescent-skin-dermal-fibroblast
#6
Jingang Hou, Sunchang Kim
Cellular senescence suppresses cancer by inducing irreversible cell growth arrest. Nevertheless, senescent cells is proposed as causal link with aging and aging-related pathologies. The physiological beneficial functions of senescent cells are still of paucity. Here we show that senescent human dermal fibroblast accelerates keratinocytes scratch wound healing and stimulates differentiation of fibroblast. Using oxidative stress (100 μM H2 O2 exposure for 1 h) induction, we successfully triggered fibroblast senescence and developed senescence associated secretory phenotype (SASP)...
May 5, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29322079/fibroblast-and-keratinocyte-gene-expression-following-exposure-to-extracts-of-neem-plant-azadirachta-indica
#7
Takao Someya, Katsura Sano, Kotaro Hara, Yoshimasa Sagane, Toshihiro Watanabe, R G S Wijesekara
This data article provides gene expression profiles, determined by using real-time PCR, of fibroblasts and keratinocytes treated with 0.01% and 0.001% extracts of neem plant (Azadirachta indica), local name "Kohomba" in Sri Lanka, harvested in Sri Lanka. For fibroblasts, the dataset includes expression profiles for genes encoding hyaluronan synthase 1 (HAS1), hyaluronan synthase 2 (HAS2), hyaluronidase-1 (HYAL1), hyaluronidase-2 (HYAL2), versican, aggrecan, CD44, collagen, type I, alpha 1 (COL1A1), collagen, type III, alpha 1 (COL3A1), collagen, type VII, alpha 1 (COL7A1), matrix metalloproteinase 1 (MMP1), acid ceramidase, basic fibroblast growth factor (bFGF), fibroblast growth factor-7 (FGF7), vascular endothelial growth factor (VEGF), interleukin-1 alpha (IL-1α), cyclooxygenase-2 (cox2), transforming growth factor beta (TGF-β), and aquaporin 3 (AQP3)...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/28968684/scleroderma-keratinocytes-promote-fibroblast-activation-independent-of-transforming-growth-factor-beta
#8
Sara S McCoy, Tamra J Reed, Celine C Berthier, Pei-Suen Tsou, Jianhua Liu, Johann E Gudjonsson, Dinesh Khanna, J Michelle Kahlenberg
Objectives: SSc is a devastating disease that results in fibrosis of the skin and other organs. Fibroblasts are a key driver of the fibrotic process through deposition of extracellular matrix. The mechanisms by which fibroblasts are induced to become pro-fibrotic remain unclear. Thus, we examined the ability of SSc keratinocytes to promote fibroblast activation and the source of this effect. Methods: Keratinocytes were isolated from skin biopsies of 9 lcSSc, 10 dcSSc and 13 control patients...
November 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28866816/distinctively-expressed-cytokines-by-three-different-inflammation-cells-and-their-interaction-with-keratinocytes-in-wound-healing
#9
Jingwen Wang, Xusheng Wang, Haiyan Chen, Jianjun Liu, Edward E Tredget, Yaojiong Wu
Inflammatory cells exert crucial influence on wound healing, while exploration is still desired to get further insight into the key factors that promote the process. In the present study, we performed comparative microarray data analysis of the three types of inflammatory cells isolated from skin wounds and focused on differentially expressed secreted factors. Gene Ontology enrichment and receptor analysis indicated that 11 genes of secreted factors in Ly6C+ inflammatory macrophages and 27 genes of secreted factors in neutrophils exhibited higher (≥ 5-fold) expression, and all these factors were considered as candidates with potentially important role in keratinocyte activation...
December 2017: Inflammation
https://www.readbyqxmd.com/read/28697174/uv-radiation-promotes-melanoma-dissemination-mediated-by-the-sequential-reaction-axis-of-cathepsins-tgf-%C3%AE-1-fap-%C3%AE
#10
Petra Wäster, Kyriakos Orfanidis, Ida Eriksson, Inger Rosdahl, Oliver Seifert, Karin Öllinger
BACKGROUND: Ultraviolet radiation (UVR) is the major risk factor for development of malignant melanoma. Fibroblast activation protein (FAP)-α is a serine protease expressed on the surface of activated fibroblasts, promoting tumour invasion through extracellular matrix (ECM) degradation. The signalling mechanism behind the upregulation of FAP-α is not yet completely revealed. METHODS: Expression of FAP-α was analysed after UVR exposure in in vitro co-culture systems, gene expression arrays and artificial skin constructs...
August 8, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28642156/tgf%C3%AE-smad-microrna-486-3p-signaling-axis-mediates-keratin-17-expression-and-keratinocyte-hyperproliferation-in-psoriasis
#11
Man Jiang, Zhongbin Sun, Erle Dang, Bing Li, Hui Fang, Junqin Li, Lin Gao, Kaiming Zhang, Gang Wang
Keratin 17 (K17) is strongly expressed in psoriatic lesions but not healthy skin, and plays a crucial role in disease pathogenesis. The mechanism of aberrant K17 expression in psoriasis has not been fully elucidated. MicroRNAs are short, single-stranded, noncoding RNAs that play important roles in regulating gene expression. Psoriasis exhibits a specific microRNA expression profile distinct from that of healthy skin. In this study, we showed that miR-486-3p was markedly reduced in psoriatic epidermis and negatively correlated with the psoriasis area and severity index score...
October 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28468507/the-reduction-in-inflammation-and-impairment-in-wound-healing-by-using-strontium-chloride-hexahydrate
#12
Sibel Berksoy Hayta, Kasim Durmuş, Emine Elif Altuntaş, Esin Yildiz, Mehmet Hisarciklıo, Melih Akyol
BACKGROUND: Numerous growth factors, cytokine, mitogen and chemotactic factors are involved in wound healing. Even though inflammation is important for the stimulation of proliferative phase, excessive inflammation also causes impairment in wound healing. Strontium salts suppress keratinocyte-induced TNF-alpha and interleukin-1 and interleukin-6 in in vitro cultures. This study was conducted to determine the effects of administration of topical strontium chloride hexahydrate on wound healing through TNF-alpha and TGF-beta in surgical wound healing model of in-vivo rat skin...
March 2018: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28414310/autophagy-supports-generation-of-cells-with-high-cd44-expression-via-modulation-of-oxidative-stress-and-parkin-mediated-mitochondrial-clearance
#13
K A Whelan, P M Chandramouleeswaran, K Tanaka, M Natsuizaka, M Guha, S Srinivasan, D S Darling, Y Kita, S Natsugoe, J D Winkler, A J Klein-Szanto, R K Amaravadi, N G Avadhani, A K Rustgi, H Nakagawa
High CD44 expression is associated with enhanced malignant potential in esophageal squamous cell carcinoma (ESCC), among the deadliest of all human carcinomas. Although alterations in autophagy and CD44 expression are associated with poor patient outcomes in various cancer types, the relationship between autophagy and cells with high CD44 expression remains incompletely understood. In transformed oesophageal keratinocytes, CD44Low -CD24High (CD44L) cells give rise to CD44High -CD24-/Low (CD44H) cells via epithelial-mesenchymal transition (EMT) in response to transforming growth factor (TGF)-β...
August 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28289136/estrogen-modulates-mesenchyme-epidermis-interactions-in-the-adult-nipple
#14
Hsing-Jung Wu, Ji Won Oh, Dan F Spandau, Sunil Tholpady, Jesus Diaz, Laura J Schroeder, Carlos D Offutt, Adam B Glick, Maksim V Plikus, Sachiko Koyama, John Foley
Maintenance of specialized epidermis requires signals from the underlying mesenchyme; however, the specific pathways involved remain to be identified. By recombining cells from the ventral skin of the K14-PTHrP transgenic mice [which overexpress parathyroid hormone-related protein (PTHrP) in their developing epidermis and mammary glands] with those from wild type, we show that transgenic stroma is sufficient to reprogram wild-type keratinocytes into nipple-like epidermis. To identify candidate nipple-specific signaling factors, we compared gene expression signatures of sorted Pdgfrα-positive ventral K14-PTHrP and wild-type fibroblasts, identifying differentially expressed transcripts that are involved in WNT, HGF, TGFβ, IGF, BMP, FGF and estrogen signaling...
April 15, 2017: Development
https://www.readbyqxmd.com/read/28107544/cutaneous-hpv8-and-mmupv1-e6-proteins-target-the-notch-and-tgf-%C3%AE-tumor-suppressors-to-inhibit-differentiation-and-sustain-keratinocyte-proliferation
#15
Jordan M Meyers, Aayushi Uberoi, Miranda Grace, Paul F Lambert, Karl Munger
Cutaneous beta-papillomaviruses are associated with non-melanoma skin cancers that arise in patients who suffer from a rare genetic disorder, Epidermodysplasia verruciformis (EV) or after immunosuppression following organ transplantation. Recent studies have shown that the E6 proteins of the cancer associated beta human papillomavirus (HPV) 5 and HPV8 inhibit NOTCH and TGF-β signaling. However, it is unclear whether disruption of these pathways may contribute to cutaneous HPV pathogenesis and carcinogenesis...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28081250/cutaneous-deficiency-of-filaggrin-and-stat3-exacerbates-vaccinia-disease-in-vivo
#16
Yong He, Ishrat Sultana, Kazuyo Takeda, Jennifer L Reed
RATIONALE: Defects in filaggrin and STAT3 are associated with atopic dermatitis (AD) and susceptibility to severe skin infection. METHODS: We evaluated skin infection with the current smallpox vaccine, ACAM-2000, in immunosuppressed mice with combined cutaneous deficiency in filaggrin and STAT3. In parallel, early events post-infection with ACAM-2000 were investigated in cultured keratinocytes in which filaggrin expression was knocked down via siRNA. RESULTS: Immunosuppressed, filaggrin-deficient mice, treated with the topical STAT3 inhibitor Stattic® prior to ACAM-2000 infection, demonstrated rapid weight loss, prolonged vaccinia burden in skin, and dermatitis...
2017: PloS One
https://www.readbyqxmd.com/read/27919341/human-epidermal-stem-cells-role-in-adverse-skin-reactions-and-carcinogenesis-from-radiation
#17
REVIEW
Michèle T Martin, Adeline Vulin, Jolyon H Hendry
In human skin, keratinopoiesis is based on a functional hierarchy among keratinocytes, with rare slow-cycling stem cells responsible for the long-term maintenance of the tissue through their self-renewal potential, and more differentiated daughter progenitor cells actively cycling to permit epidermal renewal and turn-over every month. Skin is a radio-responsive tissue, developing all types of radiation damage and pathologies, including early tissue reactions such as dysplasia and denudation in epidermis, and later fibrosis in the dermis and acanthosis in epidermis, with the TGF-beta 1 pathway as a known master switch...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27866969/overexpression-of-cd109-in-the-epidermis-differentially-regulates-alk1-versus-alk5-signaling-and-modulates-extracellular-matrix-synthesis-in-the-skin
#18
Joshua Vorstenbosch, Christopher M Nguyen, Shufeng Zhou, You Jung Seo, Aya Siblini, Kenneth W Finnson, Albane A Bizet, Simon D Tran, Anie Philip
Transforming growth factor-β (TGF-β) is a multifunctional growth factor involved in many physiological processes including wound healing and inflammation. Excessive TGF-β signaling in the skin has been implicated in fibrotic skin disorders such as keloids and scleroderma. We previously identified CD109 as a TGF-β co-receptor and inhibitor of TGF-β signaling and have shown that transgenic mice overexpressing CD109 in the epidermis display decreased scarring. In certain cell types, in addition to the canonical type I receptor, ALK5, which activates Smad2/3, TGF-β can signal through another type I receptor, ALK1, which activates Smad1/5...
March 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27574697/partial-epithelial-mesenchymal-transition-in-keloid-scars-regulation-of-keloid-keratinocyte-gene-expression-by-transforming-growth-factor-%C3%AE-1
#19
Jennifer M Hahn, Kevin L McFarland, Kelly A Combs, Dorothy M Supp
BACKGROUND: Keloids are an extreme form of abnormal scarring that result from a pathological fibroproliferative wound healing process. The molecular mechanisms driving keloid pathology remain incompletely understood, hindering development of targeted, effective therapies. Recent studies in our laboratory demonstrated that keloid keratinocytes exhibit adhesion abnormalities and display a transcriptional signature reminiscent of cells undergoing epithelial-mesenchymal transition (EMT), suggesting a role for EMT in keloid pathology...
2016: Burns and Trauma
https://www.readbyqxmd.com/read/27536941/elevating-clic4-in-multiple-cell-types-reveals-a-tgf-dependent-induction-of-a-dominant-negative-smad7-splice-variant
#20
Anjali Shukla, Yihan Yang, Sara Madanikia, Yan Ho, Mangmang Li, Vanesa Sanchez, Christophe Cataisson, Jing Huang, Stuart H Yuspa
CLIC4 (Chloride intracellular channel 4) belongs to a family of putative intracellular chloride channel proteins expressed ubiquitously in multiple tissues. CLIC4 is predominantly soluble and traffics between the cytoplasm and nucleus and participates in cell cycle control and differentiation. Transforming growth factor beta (TGF-β) elevates CLIC4, which enhances TGF-β signaling through CLIC4 mediated stabilization of phospho-Smad2/3. CLIC4 is essential for TGF-β induced conversion of fibroblasts to myofibroblasts and expression of matrix proteins, signaling via the p38MAPK pathway...
2016: PloS One
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