1
|
Lillywhite HB, Jacobson ER, Sheehy Iii CM. Complexity in the timing of the first postnatal ecdysis in snakes. J Exp Biol 2024; 227:jeb247536. [PMID: 38869075 DOI: 10.1242/jeb.247536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Lepidosaurian reptiles, particularly snakes, periodically shed the outer epidermal layers of their skin (ecdysis) to restore or enhance vital functions such as regulating water and gaseous exchange, growth, and protection against insult, infection or physical injury. Although many studies have focused on the nature and mechanisms of skin shedding, little attention has been paid to the timing of the first ecdysis in neonates following birth or hatching. A recent study investigated patterns of the time to first postnatal ecdysis in snakes based on a large dataset taken from the literature. The analysis demonstrated patterns in the time to first postnatal ecdysis related to phylogeny as well as several life history traits. While this assessment provides important advances in our knowledge of this topic, data on known biophysical drivers of ecdysis - temperature and humidity - were largely unavailable and were not evaluated. The first postnatal ecdysis of neonatal snakes can be viewed as an adaptive adjustment to the transition from the aqueous environment of the embryo to the aerial environment of the newborn. Hence, the timing of the first postnatal ecdysis is logically influenced by the aerial environment into which a newborn snake or hatchling finds itself. Therefore, in this Commentary, we first emphasize the putative plasticity of ecdysis with respect to epidermal lipids that structure the water permeability barrier and are established or renewed during ecdysis to reduce transepidermal evaporative water loss. We then discuss the likely importance of biophysical variables as influential covariates that need future investigation as potential co-determinants of the timing of first postnatal ecdysis.
Collapse
Affiliation(s)
| | - Elliott R Jacobson
- College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Coleman M Sheehy Iii
- Division of Herpetology, Florida Museum of Natural History, 1659 Museum Road, University of Florida, Gainesville, FL 32611, USA
| |
Collapse
|
2
|
Pottipati P, Kathirvel GS, M SS, Kathirvel D. A Comparative Study to Evaluate the Efficacy of Topical and Infiltrative Anesthesia for Dermatosurgery Through a Subject-Oriented Approach. Cureus 2024; 16:e57966. [PMID: 38738090 PMCID: PMC11085963 DOI: 10.7759/cureus.57966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 04/10/2024] [Indexed: 05/14/2024] Open
Abstract
Introduction The skin, along with its subcutaneous tissue, constitutes one of the major organ systems of the human body. Dermatosurgery is the branch dealing with skin conditions that operate at the level of skin, without disturbing the milieu intérieur of the human organ system. Materials and methods A cross-sectional study was undertaken, which included 100 patients comprised of 50 patients in each group. For group A, the topical anesthetic agent used was a eutectic mixture of topical 2.5% lignocaine and 2.5% prilocaine cream (EMLA); for group B, infiltration anesthesia with 2% lignocaine injection. Patients satisfying the inclusion and exclusion criteria were recruited for the study. All the participants were requested to rate the pain at the time of drug administration, during the dermatosurgical procedure, and post-procedurally with a visual analogue scale (VAS) separately. Results In this study, 50% of the participants were of the age group of 21-40 years. Males constituted 57.8% whereas females constituted 42.2%. The common procedures performed in the study were electrocautery at 37%, intralesional platelet-rich plasma (PRP) at 16%, and intralesional steroid at 7%. In group A, the VAS score during drug administration was 0. In the group B, 70% had a VAS score of 4-6, and 30% had a VAS score of 1-3 pre-procedurally. The mean VAS score during procedure was 3.06 for group A and 1.03 for group B. Conclusion The study inferred that topical anesthesia is a better choice in superficial dermatosurgical procedures for providing adequate anesthesia and improved compliance when compared to infiltrative anesthesia.
Collapse
Affiliation(s)
- Preetham Pottipati
- Dermatology, Venereology and Leprosy, Karpaga Vinayaga Institute of Medical Sciences and Research Centre, Chengalpattu, IND
| | - Ganesa Sooria Kathirvel
- Dermatology, Venereology and Leprosy, Karpaga Vinayaga Institute of Medical Sciences and Research Centre, Chengalpattu, IND
| | - Selva Sudha M
- Dermatology, Venereology and Leprosy, Karpaga Vinayaga Institute of Medical Sciences and Research Centre, Chengalpattu, IND
| | - Dhanalakshmi Kathirvel
- Dermatology, Venereology and Leprosy, Karpaga Vinayaga Institute of Medical Sciences and Research Centre, Chengalpattu, IND
| |
Collapse
|
3
|
El-Mansi AA, Rady AM, Ibrahim EH, ElBealy E. Cellular patterning and cyto-architectural organization of the skin of electric catfish (Malapterurus electricus, Siluriformes) with a particular emphasis on its ampullary electroreceptor. ZOOLOGY 2024; 163:126159. [PMID: 38471427 DOI: 10.1016/j.zool.2024.126159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 02/04/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024]
Abstract
The functional morphology of the skin of Malapteruridae is presumably evolved to cope with a diversified range of ambient physiological, environmental, and behavioral conditions. Herein, we firstly characterized the microstructures and intriguing patterning of the skin of twelve adult electric catfish (Malapterurus electricus, Malapteruridae) using histological, histochemical, immunofluorescent, and ELISA standard methodology. The skin comprises three sequentially-oriented layers: the epidermis, dermis, and hypodermis with a significantly increased thickness of the former. The epidermis contains four types of cells: the surface epithelial cells, mucous cells, granular cells, and club cells. We defined distinctive ampullary electroreceptors in the outer epidermis that possess flask-shaped sensory crypt containing electroreceptor cells together with vertical collagen rods. Dermis and hypodermis are composed of connective tissue; however, the former is much more coarse and dense with comparable reactivity for Masson-Goldner trichrome (MT). Placing our data in the context of the limited body of previous work, we showed subtle changes in the expression of mucin subunits together with cytoskeletal fractions of collagens, myosin, F-actin, keratins, and tubulins. Taken as a whole, our results convincingly showed that the skin of M. electricus shares some structural similarities to other Siluriformes, however, it has some functional modifications that are implicated in protection, defense, and foraging behavior.
Collapse
Affiliation(s)
- Ahmed A El-Mansi
- Biology Dept., Faculty of Science, King Khalid University, Abha, 61421, Saudi Arabia.
| | - Ahmed M Rady
- Biology Dept., Faculty of Science, King Saud University, Riyadh, Saudi Arabia
| | - Esam H Ibrahim
- Biology Dept., Faculty of Science, King Khalid University, Abha, 61421, Saudi Arabia
| | - Eman ElBealy
- Biology Dept., Faculty of Science, King Khalid University, Abha, 61421, Saudi Arabia
| |
Collapse
|
4
|
Park J, Kim D, Lee M, Park GD, Kim SR, Jiang Y, Jun W, Kim OK, Lee J. Unripe Pear Extract Suppresses UVB-Induced Skin Photoaging in Hairless Mice and Keratinocytes. J Med Food 2023; 26:902-910. [PMID: 38010847 DOI: 10.1089/jmf.2023.k.0168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Our study aimed to investigate whether unripe pear extract (UP) could provide protection against UVB-induced damage to both mouse skin and keratinocytes. We observed that UVB exposure, a common contributor to skin photoaging, led to wrinkle formation, skin dryness, and inflammation in mice. Nevertheless, these effects were mitigated in the groups of UVB-irradiated mice treated with UP. Moreover, UP treatment at 400 μg/mL increased the antioxidant enzyme activities (sodium dodecyl sulfate, 2.22-fold higher; catalase, 2.91-fold higher; GPx, 1.96-fold higher) along with sphingomyelin (1.58-fold higher) and hyaluronic acid (1.31-fold higher) levels in UVB-irradiated keratinocytes. In the keratinocytes irradiated with UVB, UP 400 μg/mL resulted in reduced cytokine production (TNF-α, 33.2%; IL-1β, 45.3%; IL-6, 33.4%) and the expression of inflammatory pathway-related proteins. The findings indicate that UP has a direct protective effect on UVB-irradiated keratinocytes and is also able to shield against photoaging induced by UVB. Hence, it is suggested that UP could contribute to improved skin health by averting skin photoaging.
Collapse
Affiliation(s)
- Jeongjin Park
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
| | - Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | - Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| | | | - Soo Ro Kim
- Suheung Research Center, Seongnam, Korea
| | | | - Woojin Jun
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
| | - Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju, Korea
| | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin, Korea
| |
Collapse
|
5
|
Sundberg JP, Rice RH. Phenotyping mice with skin, hair, or nail abnormalities: A systematic approach and methodologies from simple to complex. Vet Pathol 2023; 60:829-842. [PMID: 37191004 DOI: 10.1177/03009858231170329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The skin and adnexa can be difficult to interpret because they change dramatically with the hair cycle throughout life. However, a variety of methods are commonly available to collect skin and perform assays that can be useful for figuring out morphological and molecular changes. This overview provides information on basic approaches to evaluate skin and its molecular phenotype, with references for more detail, and interpretation of results on the skin and adnexa in the mouse. These approaches range from mouse genetic nomenclature, setting up a cutaneous phenotyping study, skin grafts, hair follicle reconstitution, wax stripping, electron microscopy, and Köbner reaction to very specific approaches such as lipid and protein analyses on a large scale.
Collapse
Affiliation(s)
- John P Sundberg
- The Jackson Laboratory, Bar Harbor, ME
- Vanderbilt University Medical Center, Nashville, TN
| | | |
Collapse
|
6
|
Gupta P, Nagesh K, Garg P, Thomas J, Suryawanshi P, Sethuraman G, Hazarika RD, Verma RJ, Kumar CS, Kumari S, Taneja S, Chavhan V, Thakor P, Pandita A. Evidence-Based Consensus Recommendations for Skin Care in Healthy, Full-Term Neonates in India. Pediatric Health Med Ther 2023; 14:249-265. [PMID: 37654800 PMCID: PMC10465361 DOI: 10.2147/phmt.s414091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/03/2023] [Indexed: 09/02/2023] Open
Abstract
Purpose Neonatal skin care practices guided by personal experience and preferences might be substantially different across different hospital settings. The aim of this consensus recommendation is to provide clinical practice guidance to healthcare practitioners on evidence-based neonatal skin care practices from delivery-to-discharge, in hospital settings. Patients and Methods A Scientific Advisory Board meeting on "Evidence-based Neonatal Skin Care Practices and Protocols" was held in December 2020 with an expert panel comprising neonatologists, pediatricians, obstetricians and gynecologists and pediatric dermatologist. Comprehensive literature search was performed up to 23 March 2021 using PubMed and Google Scholar to retrieve relevant evidence. Results Recommendations were developed on critical aspects of skin care in healthy full-term neonates including cleansing at birth, skin-to-skin care, cord care, diaper area care, initial and routine bathing, cleansers and emollients use, and criteria to choose appropriate skin care products. Recommendations include inclusion of skin assessment in routine neonatal care, first bath timing after cardio-respiratory and thermal stabilization, 6-24 hours after birth; bathing with water alone or adding a mild liquid cleanser could be considered appropriate as it does not impact the developing skin barrier; use of emollients is recommended for neonates with higher risk of development of eczema to maintain and enhance skin barrier function and integrity; and inclusion of skin care advice in neonatal discharge checklist. Importance of rigorous quality control, high-quality clinical trials for assessment of baby products, usage of products that are formulated appropriately for newborns, and full label transparency for baby products were highlighted. The panel identified gaps in literature and discussed the scope for future research. Conclusion These recommendations may help to standardize evidence-based skin care for healthy full-term neonates in Indian hospital settings to improve the quality of care that neonates receive in hospital and facilitate improvement in overall neonatal health outcomes.
Collapse
Affiliation(s)
- Piyush Gupta
- Department of Pediatrics, University College of Medical Sciences, New Delhi, India
| | - Karthik Nagesh
- Department of Neonatology, Manipal Hospitals Group (MHEPL), Bangalore, Karnataka, India
| | - Pankaj Garg
- Department of Neonatology, Sir Ganga Ram Hospital, New Delhi, India
| | - Jayakar Thomas
- Department of Dermatology, The Tamil Nadu Dr. M.G.R. Medical University, Chennai, Tamil Nadu, India
| | | | - Giridhar Sethuraman
- Department of Neonatology, Chettinad Hospital and Research Institute, Chennai, Tamil Nadu, India
| | - Rashna Dass Hazarika
- Department of Pediatrics & Neonatology, Nemcare Superspecialty Hospital, Guwahati, Assam, India
| | - Rahul J Verma
- Department of Neonatology & General Pediatrics, Sir H.N Reliance Hospital, Mumbai, Maharashtra, India
| | - C Suresh Kumar
- Department of Pediatrics, Apollo Cradle, Jubilee Hills, Hyderabad, Telangana, India
| | - Shantha Kumari
- Department of Obstetrics and Gynecology, Yashoda Hospitals, Hyderabad, Telangana, India
| | - Sunil Taneja
- Sushrut Medical Centre Pvt Ltd, Kanpur, Uttar Pradesh, India
| | - Vaishali Chavhan
- Department of Obstetrics and Gynecology, Sahyadri Superspecialty Hospitals, Pune, Maharashtra, India
| | - Priti Thakor
- Department of Medical Affairs, JNTL Consumer Health (India) Pvt. Ltd., Mumbai, Maharashtra, India
| | - Ankita Pandita
- Department of Medical Affairs, JNTL Consumer Health (India) Pvt. Ltd., Mumbai, Maharashtra, India
| |
Collapse
|
7
|
Chaikhong K, Chumpolphant S, Rangsinth P, Sillapachaiyaporn C, Chuchawankul S, Tencomnao T, Prasansuklab A. Antioxidant and Anti-Skin Aging Potential of Selected Thai Plants: In Vitro Evaluation and In Silico Target Prediction. PLANTS (BASEL, SWITZERLAND) 2022; 12:65. [PMID: 36616194 PMCID: PMC9823845 DOI: 10.3390/plants12010065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/17/2022] [Accepted: 12/19/2022] [Indexed: 06/01/2023]
Abstract
The skin is the largest organ that performs a variety of the body's essential functions. Impairment of skin structure and functions during the aging process might severely impact our health and well-being. Extensive evidence suggests that reactive oxygen species play a fundamental role in skin aging through the activation of the related degradative enzymes. Here, the 16 Thai medicinal plant species were screened for their potential anti-skin aging properties. All extracts were investigated for total phenolic and flavonoid contents, antioxidant, anti-elastase, and anti-tyrosinase activities, as well as the binding ability of compounds with target enzymes by molecular docking. Among all the plants screened, the leaves of A. occidentale and G. zeylanicum exhibited strong antioxidants and inhibition against elastase and tyrosinase. Other potential plants include S. alata leaf and A. catechu fruit, with relatively high anti-elastase and anti-tyrosinase activities, respectively. These results are also consistent with docking studies of compounds derived from these plants. The inhibitory actions were found to be more highly positively correlated with phenolics than flavonoids. Taken together, our findings reveal some Thai plants, along with candidate compounds as natural sources of antioxidants and potent inhibitors of elastase and tyrosinase, could be developed as promising and effective agents for skin aging therapy.
Collapse
Affiliation(s)
- Kamonwan Chaikhong
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sawarin Chumpolphant
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Panthakarn Rangsinth
- Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chanin Sillapachaiyaporn
- Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Siriporn Chuchawankul
- Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anchalee Prasansuklab
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| |
Collapse
|
8
|
Park J, Kim D, Lee M, Han S, Jun W, Jung HM, Koo YK, Na GH, Han SH, Han J, Kim OK. Enzyme-Treated Caviar Prevents UVB Irradiation-Induced Skin Photoaging. Mar Drugs 2022; 20:685. [PMID: 36355008 PMCID: PMC9696482 DOI: 10.3390/md20110685] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 03/08/2024] Open
Abstract
For this research article, we investigated the protective effects of enzyme-treated caviar powder extract (CV) in ultraviolet B (UVB)-irradiated hairless mice and keratinocytes by confirming moisturizing-related factors and elasticity-related factors. UVB irradiation induced wrinkle formation, dehydration, oxidative stress, and inflammation in the dorsal skin of mice; however, these were suppressed in the CV-supplemented groups in UVB-irradiated hairless mice. Furthermore, in UVB-irradiated keratinocytes, CV treatment increased the antioxidant enzyme activities and the levels of sphingomyelin and hyaluronic acid and decreased the production of pro-inflammatory cytokines and the expression of IkB-α and p65 phosphorylation. These findings indicate that CV can directly protect keratinocytes against UVB irradiation-induced oxidative stress and inflammation. Therefore, we suggest that CV can protect against UVB-induced skin photoaging. Therefore, we suggest that caviar is effective for skin health by preventing UVB-induced skin photoaging.
Collapse
Affiliation(s)
- Jeongjin Park
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju 61186, Korea
| | - Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea
| | - Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea
| | - Sangshin Han
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea
| | - Woojin Jun
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju 61186, Korea
| | | | | | | | | | - Jehee Han
- Almas Caviar, Hwaseong-si 18553, Korea
| | - Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju 61186, Korea
| |
Collapse
|
9
|
Anti-Inflammatory and Antioxidant Properties of Physalis alkekengi L. Extracts In Vitro and In Vivo: Potential Application for Skin Care. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:7579572. [PMID: 36310614 PMCID: PMC9605834 DOI: 10.1155/2022/7579572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/22/2022] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Inflammatory skin disorders are becoming major issues threatening public health with increasing prevalence. This study was to evaluate the anti-inflammatory, antioxidant, and antisenescent activities of traditional folk medicinal plant, Physalis alkekengi L. extracts to alleviate skin inflammation and its possible mechanisms. METHODS Lipopolysaccharides (LPS)-treated murine macrophages RAW264.7 and human skin keratinocytes HaCaT were incubated with the plant extracts, respectively. The production of nitric oxide (NO) was tested by using Griess reagents. The activity of nitric oxide synthase (NOS) was detected through a fluorescence microplate reader. Reactive oxygen species (ROS) production and cell apoptosis were quantified by flow cytometry. The proinflammatory cytokines were measured using ELISA and qRT-PCR. Human skin fibroblasts (HFF-1) were coincubated with D-galactose (D-gal) and the plant extracts. The senescence associated-galactosidase (SA-β-gal) was stained to evaluate cellular senescence. The senescence-associated secretory phenotype (SASP), IL-1β, was measured through ELISA. The mRNA of IL-1α in SLS-stimulated and PGE2 in UV-radiated 3D skin models were detected by qRT-PCR. In vivo ROS production and neutrophil recruitment in CuSO4-treated zebrafish models were observed by fluorescence microscopy. Inflammation-related factors were measured by qRT-PCR. Results. In vitro, Physalis alkekengi L. significantly reduced NO production, NOS activity, cell apoptosis, transcription of TNF-α, IL-6, IL-1β and ROS production. These plant extracts markedly attenuated SA-β-gal and IL-1β and downregulated the production of IL-1α and PGE2. In vivo, the plant extracts dramatically dampened ROS production, the number of neutrophils, and proinflammatory cytokines. CONCLUSIONS Cumulatively, this work systematically demonstrated the anti-inflammatory, antioxidant, and antisenescent properties of Physalis alkekengi L. and proposed the possible roles of Physalis alkekengi L. in inflammatory signaling pathways, providing an effective natural product for the treatment of inflammatory skin disorders.
Collapse
|
10
|
Horseman M, Panahi L, Udeani G, Tenpas AS, Verduzco Jr. R, Patel PH, Bazan DZ, Mora A, Samuel N, Mingle AC, Leon LR, Varon J, Surani S. Drug-Induced Hyperthermia Review. Cureus 2022; 14:e27278. [PMID: 36039261 PMCID: PMC9403255 DOI: 10.7759/cureus.27278] [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] [Accepted: 07/22/2022] [Indexed: 11/26/2022] Open
Abstract
Humans maintain core body temperature via a complicated system of physiologic mechanisms that counteract heat/cold fluctuations from metabolism, exertion, and the environment. Overextension of these mechanisms or disruption of body temperature homeostasis leads to bodily dysfunction, culminating in a syndrome analogous to exertional heat stroke (EHS). The inability of this thermoregulatory process to maintain the body temperature is caused by either thermal stress or certain drugs. EHS is a syndrome characterized by hyperthermia and the activation of systemic inflammation. Several drug-induced hyperthermic syndromes may resemble EHS and share common mechanisms. The purpose of this article is to review the current literature and compare exertional heat stroke (EHS) to three of the most widely studied drug-induced hyperthermic syndromes: malignant hyperthermia (MH), neuroleptic malignant syndrome (NMS), and serotonin syndrome (SS). Drugs and drug classes that have been implicated in these conditions include amphetamines, diuretics, cocaine, antipsychotics, metoclopramide, selective serotonin reuptake inhibitors (SSRIs), tricyclic antidepressants (TCAs), and many more. Observations suggest that severe or fulminant cases of drug-induced hyperthermia may evolve into an inflammatory syndrome best described as heat stroke. Their underlying mechanisms, symptoms, and treatment approaches will be reviewed to assist in accurate diagnosis, which will impact the management of potentially life-threatening complications.
Collapse
|
11
|
Mao Y, Nielsen P, Ali J. Passive and Active Microrheology for Biomedical Systems. Front Bioeng Biotechnol 2022; 10:916354. [PMID: 35866030 PMCID: PMC9294381 DOI: 10.3389/fbioe.2022.916354] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/08/2022] [Indexed: 12/12/2022] Open
Abstract
Microrheology encompasses a range of methods to measure the mechanical properties of soft materials. By characterizing the motion of embedded microscopic particles, microrheology extends the probing length scale and frequency range of conventional bulk rheology. Microrheology can be characterized into either passive or active methods based on the driving force exerted on probe particles. Tracer particles are driven by thermal energy in passive methods, applying minimal deformation to the assessed medium. In active techniques, particles are manipulated by an external force, most commonly produced through optical and magnetic fields. Small-scale rheology holds significant advantages over conventional bulk rheology, such as eliminating the need for large sample sizes, the ability to probe fragile materials non-destructively, and a wider probing frequency range. More importantly, some microrheological techniques can obtain spatiotemporal information of local microenvironments and accurately describe the heterogeneity of structurally complex fluids. Recently, there has been significant growth in using these minimally invasive techniques to investigate a wide range of biomedical systems both in vitro and in vivo. Here, we review the latest applications and advancements of microrheology in mammalian cells, tissues, and biofluids and discuss the current challenges and potential future advances on the horizon.
Collapse
Affiliation(s)
- Yating Mao
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
| | - Paige Nielsen
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
| | - Jamel Ali
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
| |
Collapse
|
12
|
John JV, McCarthy A, Karan A, Xie J. Electrospun Nanofibers for Wound Management. CHEMNANOMAT : CHEMISTRY OF NANOMATERIALS FOR ENERGY, BIOLOGY AND MORE 2022; 8:e202100349. [PMID: 35990019 PMCID: PMC9384963 DOI: 10.1002/cnma.202100349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 06/15/2023]
Abstract
Electrospun nanofibers show great potential in biomedical applications. This mini review article traces the recent advances in electrospun nanofibers for wound management via various approaches. Initially, we provide a short note on the four phases of wound healing, including hemostasis, inflammation, proliferation, and remodeling. Then, we state how the nanofiber dressings can stop bleeding and reduce the pain. Following that, we discuss the delivery of therapeutics and cells using different types of nanofibers for enhancing cell migration, angiogenesis, and re-epithelialization, resulting in the promotion of wound healing. Finally, we present the conclusions and future perspectives regarding the use of electrospun nanofibers for wound management.
Collapse
Affiliation(s)
- Johnson V John
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198 (USA)
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198 (USA)
| | - Anik Karan
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198 (USA)
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198 (USA)
- Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska Lincoln, Lincoln, NE 68588 (USA)
| |
Collapse
|
13
|
Sarango-Granda P, Espinoza LC, Díaz-Garrido N, Alvarado H, Rodríguez-Lagunas MJ, Baldomá L, Calpena A. Effect of Penetration Enhancers and Safety on the Transdermal Delivery of Apremilast in Skin. Pharmaceutics 2022; 14:1011. [PMID: 35631597 PMCID: PMC9147106 DOI: 10.3390/pharmaceutics14051011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 02/04/2023] Open
Abstract
The poor water solubility of apremilast (APR) is the main impediment to the penetration of the drug through the skin barrier. The objective of this study was to evaluate the permeability of APR in different solutions enriched with penetration promoters in ex vivo samples of human skin, and additionally assess its tolerance in vivo. To this end, APR solutions with 5% promoter were developed, and the drug's ability to penetrate human abdominal skin samples was evaluated; the coefficients of permeability, cumulated amounts permeated, and flow were some of the parameters evaluated; likewise, the in vitro and in vivo tolerance of the solutions was evaluated. The results obtained showed that the solutions containing squalene as a promoter improved the penetration of APR compared to the other promoters evaluated; in the same way, on an in vitro scale in HaCaT cells, the promoters were not toxic, finding a cell viability greater than 80% at the different dilutions evaluated. In the in vivo tests carried out with the solution that presented the best results (APR-Squalene solution), it was observed that it does not cause irritation or erythema on the skin after its colorimetric and histological evaluation of the dorsal region of rats after its application. Squalene becomes an excellent candidate to improve the permeability of the drug in the case of the development of a topical formulation; in addition, it was confirmed that this penetration enhancer is neither toxic nor irritating when in contact with the skin in in vivo tests.
Collapse
Affiliation(s)
- Paulo Sarango-Granda
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (P.S.-G.); (H.A.); (A.C.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador
| | - Lupe Carolina Espinoza
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador
| | - Natalia Díaz-Garrido
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (M.J.R.-L.); (L.B.)
- Institute of Biomedicine of the University of Barcelona (IBUB), Sant Joan de Déu Research Institute, 08028 Barcelona, Spain
| | - Helen Alvarado
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (P.S.-G.); (H.A.); (A.C.)
| | - María J. Rodríguez-Lagunas
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (M.J.R.-L.); (L.B.)
- Nutrition and Food Safety Research Institute (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Laura Baldomá
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (M.J.R.-L.); (L.B.)
| | - Ana Calpena
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (P.S.-G.); (H.A.); (A.C.)
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| |
Collapse
|
14
|
Daae E, Feragen KB, Sitek JC, von der Lippe C. It's more than just lubrication of the skin: parents' experiences of caring for a child with ichthyosis. Health Psychol Behav Med 2022; 10:335-356. [PMID: 35402085 PMCID: PMC8986293 DOI: 10.1080/21642850.2022.2053685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The ichthyoses are a group of genetic skin disorders, characterized by excessive amounts of dry, thickened skin, which may be fragile, inelastic and prone to fissures and infection. Skin care is time consuming and demanding, and, usually performed by the parents. Methods: We aimed to explore parental experience of caring for a child with ichthyosis, and collected data using semistructured interview, and thematic analysis. Results: Our analysis revealed four main themes: Parents' and others' reactions to the child's difference, Experiences with healthcare services, It's all skin care, and Impact on relationships. Conclusion: After birth of a child with severe ichthyosis, the parents experienced emotional distress and stigmatization due to the different appearance of the skin and healthcare professionals' lack of knowledge. Skin care caused pain in the child, was time consuming, and caused financial burdens. This study can guide healthcare professionals on where to focus future efforts in meeting the clinical and psychological needs of parents caring for a child with ichthyosis.
Collapse
Affiliation(s)
- Elisabeth Daae
- Center for Rare Disorders, Oslo University Hospital HF, Oslo, Norway
| | | | - Jan C Sitek
- Department of Dermatology, Oslo University Hospital HF, Oslo, Norway
| | | |
Collapse
|
15
|
Enkhtaivan E, Kim HJ, Kim B, Byun HJ, Yu L, Nguyen TM, Nguyen TH, Do PA, Kim EJ, Kim KS, Huy HP, Rahman M, Jang JY, Rho SB, Lee H, Kang GJ, Park MK, Kim NH, Choi CI, Lee K, Han HK, Cho J, Lee AY, Lee CH. Loss of EMP2 Inhibits Melanogenesis of MNT1 Melanoma Cells via Regulation of TRP-2. Biomol Ther (Seoul) 2022; 30:203-211. [PMID: 35221300 PMCID: PMC8902453 DOI: 10.4062/biomolther.2022.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 01/10/2023] Open
Abstract
Melanogenesis is the production of melanin from tyrosine by a series of enzyme-catalyzed reactions, in which tyrosinase and DOPA oxidase play key roles. The melanin content in the skin determines skin pigmentation. Abnormalities in skin pigmentation lead to various skin pigmentation disorders. Recent research has shown that the expression of EMP2 is much lower in melanoma than in normal melanocytes, but its role in melanogenesis has not yet been elucidated. Therefore, we investigated the role of EMP2 in the melanogenesis of MNT1 human melanoma cells. We examined TRP-1, TRP-2, and TYR expression levels during melanogenesis in MNT1 melanoma cells by gene silencing of EMP2. Western blot and RT-PCR results confirmed that the expression levels of TYR and TRP-2 were decreased when EMP2 expression was knocked down by EMP2 siRNA in MNT1 cells, and these changes were reversed when EMP2 was overexpressed. We verified the EMP2 gene was knocked out of the cell line (EMP2 CRISPR/Cas9) by using a CRISPR/Cas9 system and found that the expression levels of TRP-2 and TYR were significantly lower in the EMP2 CRISPR/Cas9 cell lines. Loss of EMP2 also reduced migration and invasion of MNT1 melanoma cells. In addition, the melanosome transfer from the melanocytes to keratinocytes in the EMP2 KO cells cocultured with keratinocytes was reduced compared to the cells in the control coculture group. In conclusion, these results suggest that EMP2 is involved in melanogenesis via the regulation of TRP-2 expression.
Collapse
Affiliation(s)
- Enkhmend Enkhtaivan
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Hyun Ji Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Boram Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Hyung Jung Byun
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Lu Yu
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Tuan Minh Nguyen
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Thi Ha Nguyen
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Phuong Anh Do
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Eun Ji Kim
- Lillehei Heart Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Kyung Sung Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Hiệu Phùng Huy
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Mostafizur Rahman
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Ji Yun Jang
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea.,National Cancer Center, Goyang 10408, Republic of Korea
| | - Seung Bae Rho
- National Cancer Center, Goyang 10408, Republic of Korea
| | - Ho Lee
- National Cancer Center, Goyang 10408, Republic of Korea
| | - Gyeoung Jin Kang
- Lillehei Heart Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Mi Kyung Park
- National Cancer Center, Goyang 10408, Republic of Korea
| | - Nan-Hyung Kim
- Department of Dermatology, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
| | - Chang Ick Choi
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Kyeong Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Hyo Kyung Han
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Jungsook Cho
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| | - Ai Young Lee
- Department of Dermatology, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
| | - Chang Hoon Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea
| |
Collapse
|
16
|
Kang MS, Jang SC, Park T, Kim MS, Park JS, Chi WJ, Kim SY. Synthesis and Melanogenesis Effect of 7,8-Dimethoxy-4-Methylcoumarin via MAPK Signaling-Mediated Microphthalmia-Associated Transcription Factor Upregulation. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221076647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Tyrosinase ultimately controls the melanogenesis rate of the skin, and tanning and haircare products generally induce the activation of tyrosinase. Moreover, various enzymes, including tyrosinase, tyrosinase-related protein 1 (TRP1), and tyrosinase-related protein 2 (TRP2), mediate melanogenesis in which microphthalmia-associated transcription factor (MITF) is a master regulator. One coumarin family member 7,8-dihydroxy-4-methylcoumarin (DHMC) shows extensive biological activities with beneficial health effects; however, it also induces cytotoxicity and its melanogenic effect has not been reported yet. Therefore, we first synthesized DHMC derivatives via methylation to obtain 7,8-dimethoxy-4-methylcoumairn (DMMC), and investigated the pro- or anti-melanogenic effects of DHMC and DMMC in B16-F10 melanoma cells as well as the underlying mechanism. DHMC showed cytotoxicity at all tested concentrations, whereas DMMC did not reduce cell viability, even at the high concentration. DMMC also drives the significant increase in intracellular melanin and tyrosinase activity. Moreover, DMMC induced MITF expression by significantly increasing tyrosinase activity, which activates the gene expression of TRP1 and TRP2. Western blotting confirmed that DMMC induced the activation of mitogen-activated protein kinase (MAPK) signaling by the phosphorylation of C-Jun N-terminal kinase (JNK), resulting in the increased melanin production and the decreased phosphorylation of protein kinase B. Collectively, this study showed the pro-melanogenic effect of DMMC and its potential as a safe tanning and dyeing agent.
Collapse
Affiliation(s)
| | | | - Taejin Park
- Sunmoon University, Chungnam, Republic of Korea
| | - Min-Seon Kim
- Korea Institute of Science and Technology (KIST), Gangwon-do, Republic of Korea
| | - Jin-Soo Park
- Korea Institute of Science and Technology (KIST), Gangwon-do, Republic of Korea
| | - Won-Jae Chi
- National Institute of Biological Resources, Incheon, Republic of South Korea
| | | |
Collapse
|
17
|
Biological Models of the Lower Human Airways-Challenges and Special Requirements of Human 3D Barrier Models for Biomedical Research. Pharmaceutics 2021; 13:pharmaceutics13122115. [PMID: 34959396 PMCID: PMC8707984 DOI: 10.3390/pharmaceutics13122115] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/29/2021] [Accepted: 12/04/2021] [Indexed: 11/27/2022] Open
Abstract
In our review, we want to summarize the current status of the development of airway models and their application in biomedical research. We start with the very well characterized models composed of cell lines and end with the use of organoids. An important aspect is the function of the mucus as a component of the barrier, especially for infection research. Finally, we will explain the need for a nondestructive characterization of the barrier models using TEER measurements and live cell imaging. Here, organ-on-a-chip technology offers a great opportunity for the culture of complex airway models.
Collapse
|
18
|
Kim OK, Kim D, Lee M, Park SH, Yamada W, Eun S, Lee J. Standardized Edible Bird's Nest Extract Prevents UVB Irradiation-Mediated Oxidative Stress and Photoaging in the Skin. Antioxidants (Basel) 2021; 10:antiox10091452. [PMID: 34573084 PMCID: PMC8470287 DOI: 10.3390/antiox10091452] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 12/12/2022] Open
Abstract
We investigated whether standardized edible bird’s nest extract (BNE-PK) can prevent ultraviolet B (UVB) irradiation-mediated oxidative stress and photoaging in the skin using in vitro and in vivo models. BNE-PK increased skin hydration by hyaluronic acid synthesis and activation of ceramide synthase in UVB-irradiated hairless mice and HaCaT cells. Furthermore, BNE-PK suppressed melanogenesis by down-regulation of the cAMP/PKA/CREB/MITF/TRP-1/TRP-2/tyrosinase pathway in UVB-irradiated hairless mice and 3-isobutyl-1-methylxanthine (IBMX)-treated B16F10 cells. In UVB-irradiated hairless mice, BNE-PK attenuated the wrinkle formation-related JNK/c-FOS/c-Jun/MMP pathway and activated the TGF-βRI/SMAD3/pro-collagen type I pathway during UVB-mediated oxidative stress. Based on these findings, our data suggest that BNE-PK may potentially be used for the development of effective natural anti-photoaging functional foods for skin health.
Collapse
Affiliation(s)
- Ok-Kyung Kim
- Division of Food and Nutrition and Human Ecology Research Institute, Chonnam National University, Gwangju 61186, Korea;
| | - Dakyung Kim
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Minhee Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Seong-Hoo Park
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
| | - Wakana Yamada
- Oryza Oil & Fat Chemical Co., Ltd., Ichinomiya 493-8001, Japan;
| | - Sangwon Eun
- R&D Division, Daehan Chemtech Co. Ltd., Seoul 01811, Korea;
| | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin 17104, Korea; (D.K.); (M.L.); (S.-H.P.)
- Research Institute of Clinical Nutrition, Kyung Hee University, Seoul 02447, Korea
- Correspondence: ; Tel.: +82-31-201-3838; Fax: +82-31-204-8119
| |
Collapse
|
19
|
Pourmohammadi-Bejarpasi Z, Sabzevari R, Mohammadi Roushandeh A, Ebrahimi A, Mobayen M, Jahanian-Najafabadi A, Darjani A, Habibi Roudkenar M. Combination Therapy of Metadichol Nanogel and Lipocalin-2 Engineered Mesenchymal Stem Cells Improve Wound Healing in Rat Model of Excision Injury. Adv Pharm Bull 2021; 12:550-560. [PMID: 35935055 PMCID: PMC9348536 DOI: 10.34172/apb.2022.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/29/2021] [Accepted: 09/11/2021] [Indexed: 11/11/2022] Open
Abstract
Purpose: Currently, several disorders including burns, trauma, excisional and diabetic wounds, and bedsores threaten the human health. Application of mesenchymal stem cells (MSCs) is recommended for treatment of skin disorders. However, because of oxidative stress and inflammation after skin injury, survival of transplanted MSCs is low which in turn negatively affects the efficiency of the MSCs-based therapy. In an attempt to address the aforementioned challenge and introducing a novel potential therapeutic strategy, we employed combination therapy by lipocalin 2 (Lcn2)-engineered MSCs and a Metadichol (an inverse agonist of vitamin D receptor (VDR)) nanogel in a rat model of excisional wound.
Methods: First, human umbilical cord MSCs (hUC-MSCs) was transfected by a recombinant plasmid encoding Lcn2 gene. Next, a combination of Metadichol nanogel and the engineered MSCs was co-applied on wound in rat model of excision injury. Finally the improvement of wound healing in experimental groups was evaluated by photography and histological assessments (hematoxylin and eosin staining).
Results: Our findings revealed that the repair rate was higher in the group received combination therapy comparing to control groups. Notably, Metadichol+Lcn2-MSCs showed significantly higher wound contraction rate compared to control group at all time points (P value < 0.001). Furthermore, wound repair rate was 95% 14 days after surgery, and 100% after 21 days in the treatment groups. Our results also revealed that the combination therapy improved and accelerated the wound healing process.
Conclusion: Our findings suggest a novel potential therapeutic strategy i.e. Lcn2-engineered MSCs and Metadichol for wound healing. However, further preclinical and clinical studies are required.
Collapse
Affiliation(s)
| | - Reza Sabzevari
- Medical Biotechnology Department, Paramedicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| | - Amaneh Mohammadi Roushandeh
- Cellular and Molecular Research Center, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
- Burn and Regenerative Research Center, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| | - Ammar Ebrahimi
- Medical Biotechnology Department, Paramedicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammadreza Mobayen
- Burn and Regenerative Research Center, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Abbas Darjani
- Skin Research Center, Department of Dermatology, Razi Hospital, School of Medicine, Guilan University of Medical Science, Rasht, Iran
| | - Mehryar Habibi Roudkenar
- Cellular and Molecular Research Center, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
- Burn and Regenerative Research Center, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| |
Collapse
|
20
|
Lin GW, Lai YC, Liang YC, Widelitz RB, Wu P, Chuong CM. Regional Specific Differentiation of Integumentary Organs: Regulation of Gene Clusters within the Avian Epidermal Differentiation Complex and Impacts of SATB2 Overexpression. Genes (Basel) 2021; 12:genes12081291. [PMID: 34440465 PMCID: PMC8394334 DOI: 10.3390/genes12081291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 12/24/2022] Open
Abstract
The epidermal differentiation complex (EDC) encodes a group of unique proteins expressed in late epidermal differentiation. The EDC gave integuments new physicochemical properties and is critical in evolution. Recently, we showed β-keratins, members of the EDC, undergo gene cluster switching with overexpression of SATB2 (Special AT-rich binding protein-2), considered a chromatin regulator. We wondered whether this unique regulatory mechanism is specific to β-keratins or may be derived from and common to EDC members. Here we explore (1) the systematic expression patterns of non-β-keratin EDC genes and their preferential expression in different skin appendages during development, (2) whether the expression of non-β-keratin EDC sub-clusters are also regulated in clusters by SATB2. We analyzed bulk RNA-seq and ChIP-seq data and also evaluated the disrupted expression patterns caused by overexpressing SATB2. The results show that the expression of whole EDDA and EDQM sub-clusters are possibly mediated by enhancers in E14-feathers. Overexpressing SATB2 down-regulates the enriched EDCRP sub-cluster in feathers and the EDCH sub-cluster in beaks. These results reveal the potential of complex epigenetic regulation activities within the avian EDC, implying transcriptional regulation of EDC members acting at the gene and/or gene cluster level in a temporal and skin regional-specific fashion, which may contribute to the evolution of diverse avian integuments.
Collapse
Affiliation(s)
- Gee-Way Lin
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Yung-Chih Lai
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
- Integrative Stem Cell Center, China Medical University Hospital, Taichung 40447, Taiwan
- Institute of New Drug Development, China Medical University, Taichung 40402, Taiwan
| | - Ya-Chen Liang
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
- Integrative Stem Cell Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Randall B. Widelitz
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
| | - Ping Wu
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (G.-W.L.); (Y.-C.L.); (Y.-C.L.); (R.B.W.); (P.W.)
- Correspondence:
| |
Collapse
|
21
|
Umar SA, Shahid NH, Nazir LA, Tanveer MA, Divya G, Archoo S, Raghu SR, Tasduq SA. Pharmacological Activation of Autophagy Restores Cellular Homeostasis in Ultraviolet-(B)-Induced Skin Photodamage. Front Oncol 2021; 11:726066. [PMID: 34408986 PMCID: PMC8366585 DOI: 10.3389/fonc.2021.726066] [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: 06/16/2021] [Accepted: 07/15/2021] [Indexed: 01/18/2023] Open
Abstract
Ultraviolet (UV) exposure to the skin causes photo-damage and acts as the primary etiological agent in photo-carcinogenesis. UV-B exposure induces cellular damage and is the major factor challenging skin homeostasis. Autophagy allows the fundamental adaptation of cells to metabolic and oxidative stress. Cellular dysfunction has been observed in aged tissues and in toxic insults to cells undergoing stress. Conversely, promising anti-aging strategies aimed at inhibiting the mTOR pathway have been found to significantly improve the aging-related disorders. Recently, autophagy has been found to positively regulate skin homeostasis by enhancing DNA damage recognition. Here, we investigated the geno-protective roles of autophagy in UV-B-exposed primary human dermal fibroblasts (HDFs). We found that UV-B irradiation to HDFs impairs the autophagy response in a time- and intensity-independent manner. However, improving autophagy levels in HDFs with pharmacological activators regulates the UV-B-induced cellular stress by decreasing the induction of DNA photo-adducts, promoting the DNA repair process, alleviating oxidative and ER stress responses, and regulating the expression levels of key cell cycle regulatory proteins. Autophagy also prevents HDFs from UV-B-induced nuclear damage as is evident in TUNEL assay and Acridine Orange/Ethidium Bromide co-staining. Salubrinal (an eIF2α phosphatase inhibitor) relieves ER stress response in cells and also significantly alleviates DNA damage and promotes the repair process in UV-B-exposed HDFs. P62-silenced HDFs show enhanced DNA damage response and also disturb the tumor suppressor PTEN/pAKT signaling axis in UV-B-exposed HDFs whereas Atg7-silenced HDFs reveal an unexpected consequence by decreasing the UV-B-induced DNA damage. Taken together, these results suggest that interventional autophagy offers significant protection against UV-B radiation-induced photo-damage and holds great promise in devising it as a suitable therapeutic strategy against skin pathological disorders.
Collapse
Affiliation(s)
- Sheikh Ahmad Umar
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Naikoo Hussain Shahid
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Lone Ahmad Nazir
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Malik Ahmad Tanveer
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Gupta Divya
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sajida Archoo
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sharma Rai Raghu
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sheikh Abdullah Tasduq
- Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India
- Pharmacokinetics-Pharmacodynamics (PK-PD) and Toxicology Division, Council of Scientific & Industrial Research (CSIR)-Indian Institute of Integrative Medicine, Jammu Tawi, India
| |
Collapse
|
22
|
Enkhtaivan E, Lee CH. Role of Amine Neurotransmitters and Their Receptors in Skin Pigmentation: Therapeutic Implication. Int J Mol Sci 2021; 22:ijms22158071. [PMID: 34360837 PMCID: PMC8348573 DOI: 10.3390/ijms22158071] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/09/2021] [Accepted: 07/24/2021] [Indexed: 12/27/2022] Open
Abstract
Skin pigmentation can occur due to increased melanin, including melanocyte proliferation, melanin biosynthesis, or melanocyte migration. There are many factors that influence the melanin production process, but the role of neurotransmitters in this process is still unclear. We found that histamine and serotonin influence the different stages of melanogenesis and melanogenesis, which increase melanogenesis. Since then, several related papers have been published, and from these papers, it has been recognised that the role of neurotransmitters in skin-pigment-related diseases needs to be summarised. By introducing the role of neurotransmitters in the regulation of various pigment disorders, including vitiligo and melasma, through this review, many researchers can be expected to try to apply neurotransmitter-related agonists and antagonists as treatments for skin pigment disorders.
Collapse
|
23
|
Davis A, Greenwold MJ. Evolution of an Epidermal Differentiation Complex (EDC) Gene Family in Birds. Genes (Basel) 2021; 12:genes12050767. [PMID: 34069986 PMCID: PMC8157837 DOI: 10.3390/genes12050767] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 02/01/2023] Open
Abstract
The transition of amniotes to a fully terrestrial lifestyle involved the adaptation of major molecular innovations to the epidermis, often in the form of epidermal appendages such as hair, scales and feathers. Feathers are diverse epidermal structures of birds, and their evolution has played a key role in the expansion of avian species to a wide range of lifestyles and habitats. As with other epidermal appendages, feather development is a complex process which involves many different genetic and protein elements. In mammals, many of the genetic elements involved in epidermal development are located at a specific genetic locus known as the epidermal differentiation complex (EDC). Studies have identified a homologous EDC locus in birds, which contains several genes expressed throughout epidermal and feather development. A family of avian EDC genes rich in aromatic amino acids that also contain MTF amino acid motifs (EDAAs/EDMTFs), that includes the previously reported histidine-rich or fast-protein (HRP/fp), an important marker in feather development, has expanded significantly in birds. Here, we characterize the EDAA gene family in birds and investigate the evolutionary history and possible functions of EDAA genes using phylogenetic and sequence analyses. We provide evidence that the EDAA gene family originated in an early archosaur ancestor, and has since expanded in birds, crocodiles and turtles, respectively. Furthermore, this study shows that the respective amino acid compositions of avian EDAAs are characteristic of structural functions associated with EDC genes and feather development. Finally, these results support the hypothesis that the genes of the EDC have evolved through tandem duplication and diversification, which has contributed to the evolution of the intricate avian epidermis and epidermal appendages.
Collapse
Affiliation(s)
- Anthony Davis
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA;
| | - Matthew J. Greenwold
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA;
- Department of Biology, University of Texas at Tyler, Tyler, TX 75799, USA
- Correspondence:
| |
Collapse
|
24
|
Park DH, Kim JW, Park HJ, Hahm DH. Comparative Analysis of the Microbiome across the Gut-Skin Axis in Atopic Dermatitis. Int J Mol Sci 2021; 22:ijms22084228. [PMID: 33921772 PMCID: PMC8073639 DOI: 10.3390/ijms22084228] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
Atopic dermatitis (AD) is a refractory and relapsing skin disease with a complex and multifactorial etiology. Various congenital malformations and environmental factors are thought to be involved in the onset of the disease. The etiology of the disease has been investigated, with respect to clinical skin symptoms and systemic immune response factors. A gut microbiome–mediated connection between emotional disorders such as depression and anxiety, and dermatologic conditions such as acne, based on the comorbidities of these two seemingly unrelated disorders, has long been hypothesized. Many aspects of this gut–brain–skin integration theory have recently been revalidated to identify treatment options for AD with the recent advances in metagenomic analysis involving powerful sequencing techniques and bioinformatics that overcome the need for isolation and cultivation of individual microbial strains from the skin or gut. Comparative analysis of microbial clusters across the gut–skin axis can provide new information regarding AD research. Herein, we provide a historical perspective on the modern investigation and clinical implications of gut–skin connections in AD in terms of the integration between the two microbial clusters.
Collapse
Affiliation(s)
- Dong Hoon Park
- College of Medicine, Kyung Hee University, Seoul 02447, Korea; (D.H.P.); (J.W.K.)
| | - Joo Wan Kim
- College of Medicine, Kyung Hee University, Seoul 02447, Korea; (D.H.P.); (J.W.K.)
| | - Hi-Joon Park
- Acupuncture and Meridian Science Research Center, Kyung Hee University, Seoul 02447, Korea;
| | - Dae-Hyun Hahm
- College of Medicine, Kyung Hee University, Seoul 02447, Korea; (D.H.P.); (J.W.K.)
- Acupuncture and Meridian Science Research Center, Kyung Hee University, Seoul 02447, Korea;
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
- BioNanocomposite Research Center, Kyung Hee University, Seoul 02447, Korea
- Correspondence: ; Tel.: +82-2-961-0366
| |
Collapse
|
25
|
Hossain MR, Ansary TM, Komine M, Ohtsuki M. Diversified Stimuli-Induced Inflammatory Pathways Cause Skin Pigmentation. Int J Mol Sci 2021; 22:3970. [PMID: 33921371 PMCID: PMC8070342 DOI: 10.3390/ijms22083970] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 02/07/2023] Open
Abstract
The production of melanin pigments by melanocytes and their quantity, quality, and distribution play a decisive role in determining human skin, eye, and hair color, and protect the skin from adverse effects of ultraviolet radiation (UVR) and oxidative stress from various environmental pollutants. Melanocytes reside in the basal layer of the interfollicular epidermis and are compensated by melanocyte stem cells in the follicular bulge area. Various stimuli such as eczema, microbial infection, ultraviolet light exposure, mechanical injury, and aging provoke skin inflammation. These acute or chronic inflammatory responses cause inflammatory cytokine production from epidermal keratinocytes as well as dermal fibroblasts and other cells, which in turn stimulate melanocytes, often resulting in skin pigmentation. It is confirmed by some recent studies that several interleukins (ILs) and other inflammatory mediators modulate the proliferation and differentiation of human epidermal melanocytes and also promote or inhibit expression of melanogenesis-related gene expression directly or indirectly, thereby participating in regulation of skin pigmentation. Understanding of mechanisms of skin pigmentation due to inflammation helps to elucidate the relationship between inflammation and skin pigmentation regulation and can guide development of new therapeutic pathways for treating pigmented dermatosis. This review covers the mechanistic aspects of skin pigmentation caused by inflammation.
Collapse
Affiliation(s)
| | | | - Mayumi Komine
- Department of Dermatology, Faculty of Medicine, Jichi Medical University, Tochigi 329-0498, Japan; (M.R.H.); (T.M.A.); (M.O.)
| | | |
Collapse
|
26
|
Wang J, Sui J, Mao C, Li X, Chen X, Liang C, Wang X, Wang SH, Jia C. Identification of Key Pathways and Genes Related to the Development of Hair Follicle Cycle in Cashmere Goats. Genes (Basel) 2021; 12:genes12020180. [PMID: 33513983 PMCID: PMC7911279 DOI: 10.3390/genes12020180] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/15/2021] [Accepted: 01/22/2021] [Indexed: 12/13/2022] Open
Abstract
The development of hair follicle in cashmere goats shows significant periodic change, as with mice and humans. However, for cashmere goat with double-coat, the periodic change may be due to other regulatory molecules and signal pathways. To understand the mechanism of periodic development of hair follicle, we performed a weighted gene coexpression network analysis (WGCNA) to mine key genes and establish an interaction network by utilizing the NCBI public dataset. Ten coexpression modules, including 7689 protein-coding genes, were constructed by WGCNA, six of which are considered to be significantly related to the development of the hair follicle cycle. A functional enrichment analysis for each model showed that they are closely related to ECM- receptor interaction, focal adhesion, PI3K-Akt signaling pathway, estrogen signaling pathway, and so on. Combined with the analysis of differential expressed genes, 12 hub genes from coexpression modules were selected as candidate markers, i.e., COL1A1, C1QTNF6, COL1A2, AQP3, KRTAP3-1, KRTAP11-1, FA2H, NDUFS5, DERL2, MRPL14, ANTKMT and XAB2, which might be applied to improve cashmere production.
Collapse
|
27
|
Qiu W, Gu PR, Chuong CM, Lei M. Skin Cyst: A Pathological Dead-End With a New Twist of Morphogenetic Potentials in Organoid Cultures. Front Cell Dev Biol 2021; 8:628114. [PMID: 33511139 PMCID: PMC7835531 DOI: 10.3389/fcell.2020.628114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/17/2020] [Indexed: 01/07/2023] Open
Abstract
A cyst is a closed sac-like structure in which cyst walls wrap certain contents typically including air, fluid, lipid, mucous, or keratin. Cyst cells can retain multipotency to regenerate complex tissue architectures, or to differentiate. Cysts can form in and outside the skin due to genetic problems, errors in embryonic development, cellular defects, chronic inflammation, infections, blockages of ducts, parasites, and injuries. Multiple types of skin cysts have been identified with different cellular origins, with a common structure including the outside cyst wall engulfs differentiated suprabasal layers and keratins. The skin cyst is usually used as a sign in pathological diagnosis. Large or surfaced skin cysts affect patients' appearance and may cause the dysfunction or accompanying diseases of adjacent tissues. Skin cysts form as a result of the degradation of skin epithelium and appendages, retaining certain characteristics of multipotency. Surprisingly, recent organoid cultures show the formation of cyst configuration as a transient state toward more morphogenetic possibility. These results suggest, if we can learn more about the molecular circuits controlling upstream and downstream cellular events in cyst formation, we may be able to engineer stem cell cultures toward the phenotypes we wish to achieve. For pathological conditions in patients, we speculate it may also be possible to guide the cyst to differentiate or de-differentiate to generate structures more akin to normal architecture and compatible with skin homeostasis.
Collapse
Affiliation(s)
- Weiming Qiu
- Department of Dermatology, General Hospital of Central Theater Command of Chinese People’s Liberation Army, Wuhan, China
| | - Pei-Rong Gu
- Integrative Stem Cell Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Mingxing Lei
- Integrative Stem Cell Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
- “111” Project Laboratory of Biomechanics and Tissue Repair, Key Laboratory of Biorheological Science and Technology of the Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| |
Collapse
|
28
|
Moreira CF, Cassini-Vieira P, Canesso MCC, Felipetto M, Ranfley H, Teixeira MM, Nicoli JR, Martins FS, Barcelos LS. Lactobacillus rhamnosus CGMCC 1.3724 (LPR) Improves Skin Wound Healing and Reduces Scar Formation in Mice. Probiotics Antimicrob Proteins 2021; 13:709-719. [PMID: 33433898 DOI: 10.1007/s12602-020-09713-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2020] [Indexed: 01/16/2023]
Abstract
Skin wounds are an important clinical problem which affects millions of people worldwide. The search for new therapeutic approaches to improve wound healing is needed. The present study aimed to evaluate the effects of the oral treatment with the skin-related probiotics Lactobacillus johnsonii LA1 (LJ), L. paracasei ST11 (LP), and L. rhamnosus LPR (LR) in a model of excisional skin wounds in Swiss mice. The animals received daily oral gavage of PBS or 1 × 107 colony-forming units of LJ, LP, or LR, singly, beginning just after the creation of wounds until euthanasia. Blood flow was evaluated by laser Doppler perfusion imaging. Myeloperoxidase and N-acetyl-β-D-glucosaminidase activities were used to assess the accumulation of neutrophils and macrophages, respectively. The wound tissue was also collected for histological analyses (H&E, Toluidine blue, and Picrosirius red staining). The macroscopic wound closure rate was faster only in mice treated with LR, but not with LJ and LP, when compared to mice treated with PBS. Histological evaluations showed that treatment with LR stimulated wound epithelization when compared to PBS. Further analyses showed that wounds from LR-treated mice presented a significant decrease in macrophage (p < 0.001) and mast cell (p < 0.001) infiltration, along with improved angiogenesis (p < 0.001) and blood flow (p < 0.01). Of note, collagen deposition and scarring were reduced in LR-treated mice when compared to PBS-treated mice. In conclusion, our results show that the oral treatment with Lactobacillus rhamnosus accelerates skin wound closure and reduces scar, besides to reducing inflammation and fibrogenesis and improving angiogenesis in the wounded skin.
Collapse
Affiliation(s)
- Camila Francisco Moreira
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Puebla Cassini-Vieira
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Maria Cecília Campos Canesso
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Mariane Felipetto
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Hedden Ranfley
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, Brazil
| | - Jacques Robert Nicoli
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, Brazil
| | - Flaviano Santos Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, Brazil
| | - Lucíola Silva Barcelos
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha, Minas Gerais, 31270-901, Belo Horizonte, Brazil.
| |
Collapse
|
29
|
Park M, Woo SY, Cho KA, Cho MS, Lee KH. PD-L1 produced by HaCaT cells under polyinosinic-polycytidylic acid stimulation inhibits melanin production by B16F10 cells. PLoS One 2020; 15:e0233448. [PMID: 32437407 PMCID: PMC7241723 DOI: 10.1371/journal.pone.0233448] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
Skin forms a physical barrier that protects the body against outside agents. The deepest layer of the skin, the stratum basale, contains two cell types: agent-sensing keratinocytes, and melanin-producing melanocytes. Keratinocytes can sense both harmless commensal organisms and harmful pathogens via Toll-like receptors (TLRs), and keratinocytes subsequently drive immune responses. Activation of TLR3 is required for barrier repair because it stimulates essential genes, including tight junction genes, and inflammatory cytokines. Within the basal layer of the skin, resident melanocytes use their dendritic processes to connect with approximately 30–40 neighboring keratinocytes. Most studies have focused on the transfer of melanin-synthesizing melanosomes from melanocytes to keratinocytes, but the potential regulation of melanogenesis by soluble factor(s) produced by keratinocytes remains to be explored. Studying such regulation in vivo is challenging because of the keratinocyte:melanocyte ratio in the epidermis and the location of the cells within the skin. Therefore, in this study, we investigated whether keratinocytes affected melanocyte melanogenesis in vitro under normal or inflammatory conditions. We found that polyinosinic-polycytidylic acid [poly(I:C)] stimulation induced PD-L1 secretion from HaCaT cells and that poly(I:C)-induced PD-L1 inhibited melanin production by B16F10 cells. These data provide key evidence that keratinocytes can alter melanocyte melanogenesis via the production of soluble factors under inflammatory conditions.
Collapse
Affiliation(s)
- Minhwa Park
- Department of Microbiology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - So-Youn Woo
- Department of Microbiology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Kyung-Ah Cho
- Department of Microbiology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Kyung Ho Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Bucheon-si, Korea
- * E-mail:
| |
Collapse
|
30
|
Induction of Melanogenesis by Fosfomycin in B16F10 Cells Through the Upregulation of P-JNK and P-p38 Signaling Pathways. Antibiotics (Basel) 2020; 9:antibiotics9040172. [PMID: 32290383 PMCID: PMC7235749 DOI: 10.3390/antibiotics9040172] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 01/29/2023] Open
Abstract
Fosfomycin disodium salt (FDS), which is a water-soluble extract, is a bactericidal drug used to inhibit the synthesis of cells. Moreover, it has been found to be effective in the treatment of urinary tract infections. The present study was conducted to investigate the melanogenesis-stimulating effect of FDS in B16F10 cells. Several experiments were performed on B16F10 cells: the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay, the melanin content assay, the cellular tyrosinase activity assay, and Western blotting. FDS upregulated the activity of tyrosinase in a dose-dependent manner at a wide concentration range of 0–1 mg/mL, which showed no cytotoxicity. It also increased the melanin content and the activity of the microphthalmia-associated transcription factor (MITF), tyrosinase related protein 1 (TRP-1), and tyrosinase related protein 2 (TRP-2) enzymes in a dose-dependent manner. Western blotting results showed that FDS clearly upregulated the phosphorylation of c-Jun N-terminal kinases (JNK) and p38 pathways. These data are clear evidence of the melanogenesis-inducing effect of FDS in B16F10 murine melanoma cells.
Collapse
|
31
|
Tarnowska M, Briançon S, de Azevedo JR, Chevalier Y, Barratier C, Pourcher T, Bolzinger MA. Formulation of survival acceptor medium able to maintain the viability of skin explants over in vitro dermal experiments. Int J Cosmet Sci 2019; 41:617-623. [PMID: 31545516 DOI: 10.1111/ics.12581] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/17/2019] [Indexed: 12/31/2022]
Abstract
OBJECTIVE In vitro assessments of skin absorption of xenobiotics are essential for toxicological evaluations and bioavailability studies of cosmetic and pharmaceutical ingredients. Since skin metabolism can greatly contribute to xenobiotic absorption, experiments need to be performed with skin explants kept viable in suitable survival media. Existing protocols for non-viable skin are modified to consider those conditions. The objective was to design a survival medium used as an acceptor fluid in Franz cells for testing cutaneous penetration of hydrophilic or lipophilic molecules. Their metabolism inside skin may be investigated under the same conditions. The determining factors involved in survival mechanisms in vitro are discussed. The consequences of short-term skin preservation at 4°C were also evaluated. METHODS The metabolic activity of fresh skin samples mounted in Franz cells was studied by measurement of lactate release over 24 h in order to assess the impacts of pH, buffering, osmolality, ionic strength, initial glucose supply and the addition of ethanol or non-ionic surfactant in the acceptor part of Franz cells. CONCLUSION Survival media must maintain physiological pH (>5.5) be isotonic with skin cells (300 mOsm kg-1 ) and contain at least 0.5 g L-1 glucose. Several compositions able to preserve skin metabolism are reported. Storage of skin explants overnight at 4°C impairs skin metabolic activity. The present work provides guidelines for designing survival media according to constraints related to the scientific requirements of the experiments.
Collapse
Affiliation(s)
- M Tarnowska
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| | - S Briançon
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| | - J Resende de Azevedo
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| | - Y Chevalier
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| | - C Barratier
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| | - T Pourcher
- Institut de Biosciences et Biotechnologies d'Aix-Marseille (BIAM), Commissariat à l'Énergie Atomique, Faculté de Médecine, Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Université Côte d'Azur, 28 avenue de Valombrose, Nice, France
| | - M-A Bolzinger
- Laboratoire de Dermopharmacie et Cosmétologie, Faculté de Pharmacie de Lyon, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 bd 11 Novembre 1918, 69622, Villeurbanne, France
| |
Collapse
|
32
|
Kasza I, Adler D, Nelson DW, Eric Yen CL, Dumas S, Ntambi JM, MacDougald OA, Hernando D, Porter WP, Best FA, Alexander CM. Evaporative cooling provides a major metabolic energy sink. Mol Metab 2019; 27:47-61. [PMID: 31302039 PMCID: PMC6717770 DOI: 10.1016/j.molmet.2019.06.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/08/2019] [Accepted: 06/27/2019] [Indexed: 11/30/2022] Open
Abstract
Objective Elimination of food calories as heat could help redress the excess accumulation of metabolic energy exhibited as obesity. Prior studies have focused on the induction of thermogenesis in beige and brown adipose tissues as the application of this principle, particularly because the β-adrenergic environment associated with thermogenic activation has been shown to have positive health implications. The counterpoint to this strategy is the regulation of heat loss; we propose that mammals with inefficient heat conservation will require more thermogenesis to maintain body temperature. Methods Surface temperature thermography and rates of trans-epidermal water loss were integrated to profile the total heat transfer of genetically-engineered and genetically variable mice. Results These data were incorporated with energy expenditure data to generate a biophysical profile to test the significance of increased rates of evaporative cooling. Conclusions We show that mouse skins vary considerably in their heat retention properties, whether because of naturally occurring variation (SKH-1 mice), or genetic modification of the heat-retaining lipid lamellae (SCD1, DGAT1 or Agouti Ay obese mice). In particular, we turn attention to widely different rates of evaporative cooling as the result of trans-epidermal water loss; higher rates of heat loss by evaporative cooling leads to increased demand for thermogenesis. We speculate that this physiology could be harnessed to create an energy sink to assist with strategies aimed at treating metabolic diseases.
Collapse
Affiliation(s)
- Ildiko Kasza
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, United States
| | - Doug Adler
- Space Science and Engineering Center, University of Wisconsin-Madison, United States
| | - David W Nelson
- Department of Nutritional Sciences, University of Wisconsin-Madison, United States
| | - C-L Eric Yen
- Department of Nutritional Sciences, University of Wisconsin-Madison, United States
| | - Sabrina Dumas
- Department of Nutritional Sciences, University of Wisconsin-Madison, United States
| | - James M Ntambi
- Department of Nutritional Sciences, University of Wisconsin-Madison, United States; Department of Biochemistry, University of Wisconsin-Madison, United States
| | - Ormond A MacDougald
- Department of Molecular and Integrative Physiology, University of Michigan, United States
| | - Diego Hernando
- Department of Radiology, University of Wisconsin-Madison, United States
| | - Warren P Porter
- Department of Zoology, University of Wisconsin-Madison, United States
| | - Fred A Best
- Space Science and Engineering Center, University of Wisconsin-Madison, United States
| | - C M Alexander
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, United States.
| |
Collapse
|
33
|
Neuroendocrine Aspects of Skin Aging. Int J Mol Sci 2019; 20:ijms20112798. [PMID: 31181682 PMCID: PMC6600459 DOI: 10.3390/ijms20112798] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 05/28/2019] [Accepted: 06/06/2019] [Indexed: 12/21/2022] Open
Abstract
Skin aging is accompanied by a gradual loss of function, physiological integrity and the ability to cope with internal and external stressors. This is secondary to a combination of complex biological processes influenced by constitutive and environmental factors or by local and systemic pathologies. Skin aging and its phenotypic presentation are dependent on constitutive (genetic) and systemic factors. It can be accelerated by environmental stressors, such as ultraviolet radiation, pollutants and microbial insults. The skin’s functions and its abilities to cope with external stressors are regulated by the cutaneous neuroendocrine systems encompassing the regulated and coordinated production of neuropeptides, neurohormones, neurotransmitters and hormones, including steroids and secosteroids. These will induce/stimulate downstream signaling through activation of corresponding receptors. These pathways and corresponding coordinated responses to the stressors decay with age or undergo pathological malfunctions. This affects the overall skin phenotype and epidermal, dermal, hypodermal and adnexal functions. We propose that skin aging can be attenuated or its phenotypic presentation reversed by the topical use of selected factors with local neurohormonal activities targeting specific receptors or enzymes. Some of our favorite factors include melatonin and its metabolites, noncalcemic secosteroids and lumisterol derivatives, because of their low toxicity and their desirable local phenotypic effects.
Collapse
|
34
|
Jian J, Yi-Heng H, Bang-Hui Z, Jian-Hua C, Xu-Dong Z, Shi-Chu X, Peng-Fei L, Xiao-Yan H, Zhao-Fan X. Effects of depression on healing and inflammatory responses of acute wounds in rats. Wound Repair Regen 2019; 27:462-469. [PMID: 31077486 DOI: 10.1111/wrr.12726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 04/22/2019] [Indexed: 11/28/2022]
Abstract
This study aimed to elucidate the effect of depression on the healing of acute wounds in rats. We hypothesized that depression would have negative effects on inflammation and wound healing and that antidepressant therapy would reverse these effects. This study included 100 rats randomly allocated into five groups: control group (CG), depression group (DG), pre-depression group (PDG), antidepressant group (AG), and pre-antidepressant group (PAG). Acute wounds were created on the rats' backs. The groups were subjected to no interventions (CG), aversive stimuli before (PDG) and after (DG) wound creation, and antidepressant treatment before (PAG) and after (AG) wound creation. On the day of wound creation and on days 3, 6, 9, and 12 after wound creation, observations of the wound area and degree of depression (evaluated using the sucrose preference test, open-field test, and weight change) were recorded. On days 6 and 12 after wound creation, venous serum and wound tissues were collected. Tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, IL-6, and IL-10 levels were measured using the enzyme-linked immunosorbent assay. Results showed an initial increase followed by a decrease in the degree of depression in all groups except DG (continuous decline). The wound-healing rate was significantly lower in PDG and DG than in CG; it was higher in AG and PAG than in CG. DG and PDG had higher concentrations of inflammatory cytokines than CG, and AG and PAG had lower concentrations than CG. This indicates that the onset of depression delays the healing of acute wounds and aggravates the inflammatory response in rats. Antidepressant treatment counteracts both of these negative effects.
Collapse
Affiliation(s)
- Jin Jian
- Department of Burn and Plastic Surgery, 903 Hospital of PLA, Hangzhou, 313000, Zhengjiang Province, China
| | - Huang Yi-Heng
- Pharmacy College, Fudan University, Shanghai, 200433, China
| | - Zhu Bang-Hui
- Department of Burns, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, 200433, China
| | - Chen Jian-Hua
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, 200433, China
| | - Zhang Xu-Dong
- Department of Burn and Plastic Surgery, 903 Hospital of PLA, Hangzhou, 313000, Zhengjiang Province, China
| | - Xiao Shi-Chu
- Department of Burns, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, 200433, China
| | - Luo Peng-Fei
- Department of Burns, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, 200433, China
| | - Hu Xiao-Yan
- Department of Burns, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, 200433, China
| | - Xia Zhao-Fan
- Department of Burns, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, 200433, China
| |
Collapse
|
35
|
Li X, Wang R, Zhang J, Yang S, Ji K, Du B, Liu X, Liu B, Qi S, Jia Q, Fan R. Cyclin-dependent kinase 5 regulates proliferation, migration, tyrosinase activity, and melanin production in B16-F10 melanoma cells via the essential regulator p-CREB. In Vitro Cell Dev Biol Anim 2019; 55:416-425. [PMID: 31069610 DOI: 10.1007/s11626-019-00343-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/22/2019] [Indexed: 01/18/2023]
Abstract
Melanoma is an aggressive cancer with increasing incidence and a growing lifetime risk that arises from normal melanocytes or their precursors. A thorough understanding of the molecular mechanism of melanomagenesis and melanoma biology is essential for the diagnosis, prognostication, and therapy of melanoma. Cyclin-dependent protein kinase 5 (Cdk5) is one of the proteins highly expressed in B16-F10 melanoma cells that controls melanoma cell motility, invasiveness, and metastatic spread and might be a promising novel therapeutic target. The effect of Cdk5 on proliferation and migration, which are important for carcinogenesis, has not been reported. In the current study, we found that siRNA-mediated knockdown of Cdk5 in B16-F10 melanoma cells inhibited melanoma cell proliferation through downregulation of the CaMK4-p-CREB pathway, inhibited migration through downregulation of p-CREB, integrin beta 1, and integrin beta 5, and also inhibited tyrosinase activity and melanin production through p-CREB-MITF regulation. The results indicate that Cdk5 controls melanoma development, with an essential regulatory role for p-CREB.
Collapse
Affiliation(s)
- Xiuqing Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Ruifang Wang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Junzhen Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Shanshan Yang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Kaiyuan Ji
- College of Animal Science and Veterinary Medicine, Anhui Agricultural University, Changjiang West Road, Hefei, 230036, China
| | - Bin Du
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Xuexian Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Bo Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Shuhui Qi
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Qiong Jia
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China
| | - Ruiwen Fan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu, 030801, China.
| |
Collapse
|
36
|
Plikus MV, Chuong CM. Understanding skin morphogenesis across developmental, regenerative and evolutionary levels. Exp Dermatol 2019; 28:327-331. [PMID: 30951234 DOI: 10.1111/exd.13932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Maksim V Plikus
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, California.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, California.,Center for Complex Biological Systems, University of California, Irvine, Irvine, California.,NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, California.,Integrative Stem Cell Center, China Medical University, Taichung, Taiwan.,International Wound Repair and Regenerative Center, National Cheng Kung University, Tainan, Taiwan
| |
Collapse
|
37
|
Davis AC, Greenwold MJ, Sawyer RH. Complex Gene Loss and Duplication Events Have Facilitated the Evolution of Multiple Loricrin Genes in Diverse Bird Species. Genome Biol Evol 2019; 11:984-1001. [PMID: 30863850 PMCID: PMC6447390 DOI: 10.1093/gbe/evz054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2019] [Indexed: 01/29/2023] Open
Abstract
The evolution of a mechanically resilient epidermis was a key adaptation in the transition of amniotes to a fully terrestrial lifestyle. Skin appendages usually form via a specialized type of programmed cell death known as cornification which is characterized by the formation of an insoluble cornified envelope (CE). Many of the substrates of cornification are encoded by linked genes located at a conserved genetic locus known as the epidermal differentiation complex (EDC). Loricrin is the main protein component of the mammalian CE and is encoded for by a gene located within the EDC. Recently, genes resembling mammalian loricrin, along with several other proteins most likely involved in CE formation, have been identified within the EDC of birds and several reptiles. To better understand the evolution and function of loricrin in birds, we screened the genomes of 50 avian species and 3 crocodilians to characterize their EDC regions. We found that loricrin is present within the EDC of all species investigated, and that three loricrin genes were present in birds. Phylogenetic and molecular evolution analyses found evidence that gene deletions and duplications as well as concerted evolution has shaped the evolution of avian loricrins. Our results suggest a complex evolutionary history of avian loricrins which has accompanied the evolution of bird species with diverse morphologies and lifestyles.
Collapse
Affiliation(s)
- Anthony C Davis
- Department of Biological Sciences, College of Arts and Sciences, University of South Carolina
| | - Matthew J Greenwold
- Department of Biological Sciences, College of Arts and Sciences, University of South Carolina
| | - Roger H Sawyer
- Department of Biological Sciences, College of Arts and Sciences, University of South Carolina
| |
Collapse
|
38
|
Gęgotek A, Jastrząb A, Jarocka-Karpowicz I, Muszyńska M, Skrzydlewska E. The Effect of Sea Buckthorn ( Hippophae rhamnoides L.) Seed Oil on UV-Induced Changes in Lipid Metabolism of Human Skin Cells. Antioxidants (Basel) 2018; 7:E110. [PMID: 30142919 PMCID: PMC6162715 DOI: 10.3390/antiox7090110] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/10/2018] [Accepted: 08/20/2018] [Indexed: 12/14/2022] Open
Abstract
Lipids and proteins of skin cells are the most exposed to harmful ultraviolet (UV) radiation contained in sunlight. There is a growing need for natural compounds that will protect these sensitive molecules from damage, without harmful side effects. The aim of this study was to investigate the effect of sea buckthorn seed oil on the redox balance and lipid metabolism in UV irradiated cells formed different skin layers to examine whether it had a protective effect. Human keratinocytes and fibroblasts were subjected to UVA (ultraviolet type A; 30 J/cm² and 20 J/cm²) or UVB (ultraviolet type B; 60 mJ/cm² and 200 mJ/cm², respectively) radiation and treated with sea buckthorn seed oil (500 ng/mL), and the redox activity was estimated by reactive oxygen species (ROS) generation and enzymatic/non-enzymatic antioxidants activity/level (using electron spin resonance (ESR), high-performance liquid chromatography (HPLC), and spectrophotometry). Lipid metabolism was measured by the level of fatty acids, lipid peroxidation products, endocannabinoids and phospholipase A2 activity (GC/MS (gas chromatography/mass spectrometry), LC/MS (liquid chromatography/mass spectrometry), and spectrophotometry). Also, transcription factor Nrf2 (nuclear erythroid 2-related factor) and its activators/inhibitors, peroxisome proliferator-activated receptors (PPAR) and cannabinoid receptor levels were measured (Western blot). Sea buckthorn oil partially prevents UV-induced ROS generation and enhances the level of non-enzymatic antioxidants such as glutathione (GSH), thioredoxin (Trx) and vitamins E and A. Moreover, it stimulates the activity of Nrf2 leading to enhanced antioxidant enzyme activity. As a result, decreases in lipid peroxidation products (4-hydroxynonenal, 8-isoprostaglandin) and increases in the endocannabinoid receptor levels were observed. Moreover, sea buckthorn oil treatment enhanced the level of phospholipid and free fatty acids, while simultaneously decreasing the cannabinoid receptor expression in UV irradiated keratinocytes and fibroblasts. The main differences in sea buckthorn oil on various skin cell types was observed in the case of PPARs-in keratinocytes following UV radiation PPAR expression was decreased by sea buckthorn oil treatment, while in fibroblasts the reverse effect was observed, indicating an anti-inflammatory effect. With these results, sea buckthorn seed oil exhibited prevention of UV-induced disturbances in redox balance as well as lipid metabolism in skin fibroblasts and keratinocytes, which indicates it is a promising natural compound in skin photo-protection.
Collapse
Affiliation(s)
- Agnieszka Gęgotek
- Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok 15-089, Poland.
| | - Anna Jastrząb
- Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok 15-089, Poland.
| | - Iwona Jarocka-Karpowicz
- Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok 15-089, Poland.
| | - Marta Muszyńska
- Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok 15-089, Poland.
| | - Elżbieta Skrzydlewska
- Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok 15-089, Poland.
| |
Collapse
|
39
|
Noethel B, Ramms L, Dreissen G, Hoffmann M, Springer R, Rübsam M, Ziegler WH, Niessen CM, Merkel R, Hoffmann B. Transition of responsive mechanosensitive elements from focal adhesions to adherens junctions on epithelial differentiation. Mol Biol Cell 2018; 29:2317-2325. [PMID: 30044710 PMCID: PMC6249805 DOI: 10.1091/mbc.e17-06-0387] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The skin’s epidermis is a multilayered epithelial tissue and the first line of defense against mechanical stress. Its barrier function depends on an integrated assembly and reorganization of cell–matrix and cell–cell junctions in the basal layer and on different intercellular junctions in suprabasal layers. However, how mechanical stress is recognized and which adhesive and cytoskeletal components are involved are poorly understood. Here, we subjected keratinocytes to cyclic stress in the presence or absence of intercellular junctions. Both states not only recognized but also responded to strain by reorienting actin filaments perpendicular to the applied force. Using different keratinocyte mutant strains that altered the mechanical link of the actin cytoskeleton to either cell–matrix or cell–cell junctions, we show that not only focal adhesions but also adherens junctions function as mechanosensitive elements in response to cyclic strain. Loss of paxillin or talin impaired focal adhesion formation and only affected mechanosensitivity in the absence but not presence of intercellular junctions. Further analysis revealed the adherens junction protein α-catenin as a main mechanosensor, with greatest sensitivity conferred on binding to vinculin. Our data reveal a mechanosensitive transition from cell–matrix to cell–cell adhesions on formation of keratinocyte monolayers with vinculin and α-catenin as vital players.
Collapse
Affiliation(s)
- Barbara Noethel
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Lena Ramms
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Georg Dreissen
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Marco Hoffmann
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Ronald Springer
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Matthias Rübsam
- Department of Dermatology, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
| | - Wolfgang H Ziegler
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, 30625 Hannover, Germany
| | - Carien M Niessen
- Department of Dermatology, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
| | - Rudolf Merkel
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| | - Bernd Hoffmann
- Forschungszentrum Jülich, Institute of Complex Systems, ICS-7: Biomechanics, 52428 Jülich, Germany
| |
Collapse
|
40
|
Wu NC, Cramp RL, Franklin CE. Living with a leaky skin: upregulation of ion transport proteins during sloughing. ACTA ACUST UNITED AC 2018; 220:2026-2035. [PMID: 28566357 DOI: 10.1242/jeb.151738] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 03/20/2017] [Indexed: 11/20/2022]
Abstract
Amphibian skin is a multifunctional organ providing protection from the external environment and facilitating the physiological exchange of gases, water and salts with the environment. In order to maintain these functions, the outer layer of skin is regularly replaced in a process called sloughing. During sloughing, the outermost layer of the skin is removed in its entirety, which has the potential to interfere with skin permeability and ion transport, disrupting homeostasis. In this study, we measured, in vivo, the effects of sloughing on the cutaneous efflux of ions in toads Rhinella marina kept in freshwater conditions. We also measured transepithelial potential, cutaneous resistance, active ion transport and the distribution, abundance and gene expression of the key ion transport proteins sodium-potassium ATPase (NKA) and epithelial sodium channel (ENaC) during sloughing. We hypothesised that the increase in transepithelial efflux of ions during sloughing is a consequence of increased permeability and/or a reduction in the abundance or expression of cutaneous ion transport proteins, resulting in disruption of internal ion homeostasis. There was a significant increase in sodium and chloride efflux during sloughing in R. marina However, although in vitro skin resistance decreased after sloughing, active sodium transport increased commensurate with an increase in NKA and ENaC protein abundance in the skin. These changes in skin function associated with sloughing did not affect the maintenance of internal electrolyte homeostasis. These results suggest that during sloughing, amphibians actively maintain internal homeostasis by increasing cutaneous rates of ion uptake.
Collapse
Affiliation(s)
- Nicholas C Wu
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Rebecca L Cramp
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Craig E Franklin
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| |
Collapse
|
41
|
Bioengineering of a Full-Thickness Skin Equivalent in a 96-Well Insert Format for Substance Permeation Studies and Organ-On-A-Chip Applications. Bioengineering (Basel) 2018; 5:bioengineering5020043. [PMID: 29880746 PMCID: PMC6027510 DOI: 10.3390/bioengineering5020043] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 12/24/2022] Open
Abstract
The human skin is involved in protecting the inner body from constant exposure to outer environmental stimuli. There is an evident need to screen for toxicity and the efficacy of drugs and cosmetics applied to the skin. To date, animal studies are still the standard method for substance testing, although they are currently controversially discussed Therefore, the multi-organ chip is an attractive alternative to replace animal testing. The two-organ chip is designed to hold 96-well cell culture inserts (CCIs). Small-sized skin equivalents are needed for this. In this study, full-thickness skin equivalents (ftSEs) were generated successfully inside 96-well CCIs. These skin equivalents developed with in vivo-like histological architecture, with normal differentiation marker expressions and proliferation rates. The 96-well CCI-based ftSEs were successfully integrated into the two-organ chip. The permeation of fluorescein sodium salt through the ftSEs was monitored during the culture. The results show a decreasing value for the permeation over time, which seems a promising method to track the development of the ftSEs. Additionally, the permeation was implemented in a computational fluid dynamics simulation, as a tool to predict results in long-term experiments. The advantage of these ftSEs is the reduced need for cells and substances, which makes them more suitable for high throughput assays.
Collapse
|
42
|
Kim K, Cha HJ, Joo D, Choi SJ, An IS, An S. Sophora japonica extracts accelerates keratinocyte differentiation through miR-181a. BIOMEDICAL DERMATOLOGY 2018. [DOI: 10.1186/s41702-017-0011-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
43
|
Shibata E, Ando K, Murase E, Kawakami A. Heterogeneous fates and dynamic rearrangement of regenerative epidermis-derived cells during zebrafish fin regeneration. Development 2018; 145:dev.162016. [DOI: 10.1242/dev.162016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
Abstract
The regenerative epidermis (RE) is a specialized tissue that plays an essential role in tissue regeneration. However, the fate of the RE during and after regeneration is unknown. In this study, we performed Cre-loxP-mediated cell fate tracking and revealed the fates of major population of regenerative epidermis cells that express fibronectin 1b (fn1b) during zebrafish fin regeneration. Our study showed that these RE cells are mainly recruited from the inter-ray epidermis, and that they follow heterogeneous cell fates. Early recruited cells contribute to initial wound healing and soon disappear by apoptosis, while the later recruited cells contribute to the regenerated epidermis. Intriguingly, many of these cells were also expelled from the regenerated tissue by a dynamic caudal movement of the epidermis over time, and in turn the loss of epidermal cells was replenished by a global self-replication of basal and suprabasal cells in fin. De-differentiation of non-basal epidermal cells into the basal epidermal cells did not occur during regeneration. Overall, our study revealed heterogeneous fates of RE cells and a dynamic rearrangement of the epidermis during and after regeneration.
Collapse
Affiliation(s)
- Eri Shibata
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Kazunori Ando
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Emiko Murase
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Atsushi Kawakami
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| |
Collapse
|
44
|
Fan W, Jiang Y, Zhang M, Yang D, Chen Z, Sun H, Lan X, Yan F, Xu J, Yuan W. Comparative transcriptome analyses reveal the genetic basis underlying the immune function of three amphibians' skin. PLoS One 2017; 12:e0190023. [PMID: 29267366 PMCID: PMC5739465 DOI: 10.1371/journal.pone.0190023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 12/06/2017] [Indexed: 02/06/2023] Open
Abstract
Skin as the first barrier against external invasions plays an essential role for the survival of amphibians on land. Understanding the genetic basis of skin function is significant in revealing the mechanisms underlying immunity of amphibians. In this study, we de novo sequenced and comparatively analyzed skin transcriptomes from three different amphibian species, Andrias davidianus, Bufo gargarizans, and Rana nigromaculata Hallowell. Functional classification of unigenes in each amphibian showed high accordance, with the most represented GO terms and KEGG pathways related to basic biological processes, such as binding and metabolism and immune system. As for the unigenes, GO and KEGG distributions of conserved orthologs in each species were similar, with the predominantly enriched pathways including RNA polymerase, nucleotide metabolism, and defense. The positively selected orthologs in each amphibian were also similar, which were primarily involved in stimulus response, cell metabolic, membrane, and catalytic activity. Furthermore, a total of 50 antimicrobial peptides from 26 different categories were identified in the three amphibians, and one of these showed high efficiency in inhibiting the growth of different bacteria. Our understanding of innate immune function of amphibian skin has increased basis on the immune-related unigenes, pathways, and antimicrobial peptides in amphibians.
Collapse
Affiliation(s)
- Wenqiao Fan
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Yongchuan, Chongqing, China
- Chongqing Engineering Laboratory of Targeted and Innovative Therapeutics, Yongchuan, Chongqing, China
| | - Yusong Jiang
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Meixia Zhang
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Donglin Yang
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Yongchuan, Chongqing, China
- Chongqing Engineering Laboratory of Targeted and Innovative Therapeutics, Yongchuan, Chongqing, China
| | - Zhongzhu Chen
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Yongchuan, Chongqing, China
- Chongqing Engineering Laboratory of Targeted and Innovative Therapeutics, Yongchuan, Chongqing, China
| | - Hanchang Sun
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
- * E-mail:
| | - Xuelian Lan
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Yongchuan, Chongqing, China
- Chongqing Engineering Laboratory of Targeted and Innovative Therapeutics, Yongchuan, Chongqing, China
| | - Fan Yan
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Jingming Xu
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Wanan Yuan
- Chongqing Research Center of Conservation and Development on Rare and Endangered Aquatic Resources, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| |
Collapse
|
45
|
Functional Role of Cyclin-Dependent Kinase 5 in the Regulation of Melanogenesis and Epidermal Structure. Sci Rep 2017; 7:13783. [PMID: 29062096 PMCID: PMC5653820 DOI: 10.1038/s41598-017-12567-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/12/2017] [Indexed: 01/08/2023] Open
Abstract
The mammalian integumentary system plays important roles in body homeostasis, and dysfunction of melanogenesis or epidermal development may lead to a variety of skin diseases, including melanoma. Skin pigmentation in humans and coat color in fleece-producing animals are regulated by many genes. Among them, microphthalmia-associated transcription factor (MITF) and paired-box 3 (PAX3) are at the top of the cascade and regulate activities of many important melanogenic enzymes. Here, we report for the first time that cyclin-dependent kinase 5 (Cdk5) is an essential regulator of MITF and PAX3. Cdk5 knockdown in mice causes a lightened coat color, a polarized distribution of melanin and hyperproliferation of basal keratinocytes. Reduced expression of Keratin 10 (K10) resulting from Cdk5 knockdown may be responsible for an abnormal epidermal structure. In contrast, overexpression of Cdk5 in sheep (Ovis aries) only produces brown patches on a white background, with no other observable abnormalities. Collectively, our findings show that Cdk5 has an important functional role in the regulation of melanin production and transportation and in normal development of the integumentary system.
Collapse
|
46
|
Peng T, Chanthaphavong RS, Sun S, Trigilio JA, Phasouk K, Jin L, Layton ED, Li AZ, Correnti CE, De van der Schueren W, Vazquez J, O'Day DR, Glass IA, Knipe DM, Wald A, Corey L, Zhu J. Keratinocytes produce IL-17c to protect peripheral nervous systems during human HSV-2 reactivation. J Exp Med 2017; 214:2315-2329. [PMID: 28663436 PMCID: PMC5551564 DOI: 10.1084/jem.20160581] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 03/22/2017] [Accepted: 05/24/2017] [Indexed: 11/04/2022] Open
Abstract
Despite frequent herpes simplex virus (HSV) reactivation, peripheral nerve destruction and sensory anesthesia are rare. We discovered that skin biopsies obtained during asymptomatic human HSV-2 reactivation exhibit a higher density of nerve fibers relative to biopsies during virological and clinical quiescence. We evaluated the effects of HSV infection on keratinocytes, the initial target of HSV replication, to better understand this observation. Keratinocytes produced IL-17c during HSV-2 reactivation, and IL-17RE, an IL-17c-specific receptor, was expressed on nerve fibers in human skin and sensory neurons in dorsal root ganglia. In ex vivo experiments, exogenous human IL-17c provided directional guidance and promoted neurite growth and branching in microfluidic devices. Exogenous murine IL-17c pretreatment reduced apoptosis in HSV-2-infected primary neurons. These results suggest that IL-17c is a neurotrophic cytokine that protects peripheral nerve systems during HSV reactivation. This mechanism could explain the lack of nerve damage from recurrent HSV infection and may provide insight to understanding and treating sensory peripheral neuropathies.
Collapse
Affiliation(s)
- Tao Peng
- Department of Laboratory Medicine, University of Washington, Seattle, WA .,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | - Sijie Sun
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - James A Trigilio
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Khamsone Phasouk
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Lei Jin
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Erik D Layton
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Alvason Z Li
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Colin E Correnti
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | - Julio Vazquez
- Shared Resources Scientific Imaging, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Diana R O'Day
- Laboratory of Developmental Biology, University of Washington, Seattle, WA
| | - Ian A Glass
- Laboratory of Developmental Biology, University of Washington, Seattle, WA
| | - David M Knipe
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA
| | - Anna Wald
- Department of Laboratory Medicine, University of Washington, Seattle, WA.,Department of Medicine, University of Washington, Seattle, WA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Lawrence Corey
- Department of Laboratory Medicine, University of Washington, Seattle, WA.,Department of Medicine, University of Washington, Seattle, WA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Jia Zhu
- Department of Laboratory Medicine, University of Washington, Seattle, WA .,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| |
Collapse
|
47
|
Jeong SI, Kang YJ, Lee KS, Shin H, Lee BK. Efficacy of mechanically modified electrospun poly(l-lactide-co-ε-caprolactone)/gelatin membrane on full-thickness wound healing in rats. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-016-0609-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
48
|
Elias PM. The how, why and clinical importance of stratum corneum acidification. Exp Dermatol 2017; 26:999-1003. [PMID: 28266738 DOI: 10.1111/exd.13329] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 12/25/2022]
Abstract
In this article, I review the multiple endogenous mechanisms that contribute to the highly acidic pH of normal stratum corneum (SC). Then, I describe how each mechanism potentially impacts specific defensive functions of the SC. Finally, I review the rapidly expanding, clinical implications and potential therapeutic applications of SC acidification.
Collapse
Affiliation(s)
- Peter M Elias
- Dermatology Service, Department of Veterans Affairs Medical Center, San Francisco, CA, USA.,Department of Dermatology, University of California, San Francisco, CA, USA
| |
Collapse
|
49
|
Kiwanuka E, Junker JP, Eriksson E. Transforming growth factor β1 regulates the expression of CCN2 in human keratinocytes via Smad-ERK signalling. Int Wound J 2017; 14:1006-1018. [PMID: 28371159 DOI: 10.1111/iwj.12749] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 03/04/2017] [Indexed: 01/22/2023] Open
Abstract
Connective tissue growth factor (CCN2/CTGF) and transforming growth factor β1 (TGF-β1) are important regulators of skin wound healing, but controversy remains regarding their expression in epithelial cell lineages. Here, we investigate the expression of CCN2 in keratinocytes during reepithelialisation and its regulation by TGF-β1. CCN2 was detected in the epidermis of healing full-thickness porcine wounds. Human keratinocytes were incubated with or without 10 ng/ml TGF-β1, and signalling pathways were blocked with 10-μM SIS3 or 20-μM PD98059. Semi-quantitative real-time PCR was used to study CCN2 mRNA expression, and western blot was used to measure CCN2, phosphorylated-ERK1/2, ERK1/2, phosphorylated-Smad3 and Smad2/3 proteins. CCN2 was transiently expressed in neoepidermis at the leading edge of the wound in vivo. In vitro, CCN2 expression was induced by TGF-β1 at 2 hours (7·5 ± 1·9-fold mRNA increase and 3·0 ± 0·6-fold protein increase) and 12 hours (5·4 ± 1·9-fold mRNA increase and 3·3 ± 0·6-fold protein increase). Compared with inhibiting the SMAD pathway, inhibiting the mitogen-activated protein kinase (MAPK) pathway was more effective in reducing TGF-β1-induced CCN2 mRNA and protein expression. Inhibition of the MAPK pathway had minimal impact on the activity of the SMAD pathway. CCN2 is expressed in keratinocytes in response to tissue injury or TGF-β1. In addition, TGF-β1 induces CCN2 expression in keratinocytes through the ras/MEK/ERK pathway. A complete understanding of CCN2 expression in keratinocytes is critical to developing novel therapies for wound healing and cutaneous malignancy.
Collapse
Affiliation(s)
- Elizabeth Kiwanuka
- Department of Plastic Surgery, Rhode Island Hospital, Brown University School of Medicine, Providence, RI, USA
| | - Johan Pe Junker
- Center for Disaster Medicine and Traumatology, Department of Clinical and Experimental Medicine, Linköping University Hospital, Linköping, Sweden
| | - Elof Eriksson
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
50
|
Blume-Peytavi U, Kottner J, Sterry W, Hodin MW, Griffiths TW, Watson REB, Hay RJ, Griffiths CEM. Age-Associated Skin Conditions and Diseases: Current Perspectives and Future Options. THE GERONTOLOGIST 2017; 56 Suppl 2:S230-42. [PMID: 26994263 DOI: 10.1093/geront/gnw003] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The International League of Dermatological Societies (ILDS), a global, not-for-profit organization representing 157 dermatological societies worldwide, has identified the consequences of skin aging as one of the most important grand challenges in global skin health. Reduced functional capacity and increased susceptibility of the skin with development of dermatoses such as dry skin, itching, ulcers, dyspigmentation, wrinkles, fungal infections, as well as benign and malignant tumors are the most common skin conditions in aged populations worldwide. Environmental (e.g., pollution) and lifestyle factors (e.g., smoking, sunbed use) negatively affect skin health. In turn altered appearance, dry skin, chronic wounds, and other conditions decrease general health and reduce the likelihood for healthy and active aging. Preventive skin care includes primary, secondary, and tertiary interventions. Continuous sun protection from early childhood onward is most important, to avoid extrinsic skin damage and skin cancer. Exposure to irritants, allergens, or other molecules damaging the skin must be avoided or reduced to a minimum. Public health approaches are needed to implement preventive and basic skin care worldwide to reach high numbers of dermatological patients and care receivers. Education of primary caregivers and implementation of community dermatology are successful strategies in resource-poor countries. Besides specialist physicians, nurses and other health care professionals play important roles in preventing and managing age-related skin conditions in developing as well as in developed countries. Healthy skin across the life course leads to better mental and emotional health, positive impact on social engagement, and healthier, more active, and productive lives.
Collapse
Affiliation(s)
- Ulrike Blume-Peytavi
- Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Germany.
| | - Jan Kottner
- Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Germany
| | - Wolfram Sterry
- Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Germany. The International League of Dermatological Societies, London, UK
| | | | - Tamara W Griffiths
- The Dermatology Centre, University of Manchester, Academic Health Science Centre, UK
| | - Rachel E B Watson
- The Dermatology Centre, University of Manchester, Academic Health Science Centre, UK
| | | | - Christopher E M Griffiths
- The Dermatology Centre, University of Manchester, Academic Health Science Centre, UK. The International League of Dermatological Societies, London, UK
| |
Collapse
|