1
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Kim HJ, Kim YH. Exploring Acne Treatments: From Pathophysiological Mechanisms to Emerging Therapies. Int J Mol Sci 2024; 25:5302. [PMID: 38791344 PMCID: PMC11121268 DOI: 10.3390/ijms25105302] [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: 03/22/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Acne vulgaris is a common dermatological condition that can present across different ages but predominantly affects adolescents and young adults. Characterized by various lesion types, the pathogenesis of acne is complex, involving genetic, hormonal, microbial, and inflammatory factors. This review comprehensively addresses current and emerging acne management strategies, emphasizing both topical and systemic treatments, procedural therapies, and dietary modifications. Key topical agents include retinoids, benzoyl peroxide, antibiotics, and other specialized compounds. Systemic options like antibiotics, hormonal therapies, and retinoids offer significant therapeutic benefits, particularly for moderate to severe cases. Procedural treatments such as laser devices, photodynamic therapy, chemical peels, and intralesional injections present viable alternatives for reducing acne symptoms and scarring. Emerging therapies focus on novel biologics, bacteriophages, probiotics, and peptides, providing promising future options. This review underscores the importance of personalized approaches to treatment due to the multifaceted nature of acne, highlighting the potential of innovative therapies for improving patient outcomes.
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Affiliation(s)
- Hyun Jee Kim
- Department of Dermatology, International St. Mary’s Hospital, College of Medicine, Catholic Kwandong University, Incheon 22711, Republic of Korea;
| | - Yeong Ho Kim
- Department of Dermatology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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2
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Liu Y, Gao H, Chen H, Ji S, Wu L, Zhang H, Wang Y, Fu X, Sun X. Sebaceous gland organoid engineering. BURNS & TRAUMA 2024; 12:tkae003. [PMID: 38699464 PMCID: PMC11063650 DOI: 10.1093/burnst/tkae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/27/2023] [Indexed: 05/05/2024]
Abstract
Sebaceous glands (SGs), as holocrine-secreting appendages, lubricate the skin and play a central role in the skin barrier. Large full-thickness skin defects cause overall architecture disruption and SG loss. However, an effective strategy for SG regeneration is lacking. Organoids are 3D multicellular structures that replicate key anatomical and functional characteristics of in vivo tissues and exhibit great potential in regenerative medicine. Recently, considerable progress has been made in developing reliable procedures for SG organoids and existing SG organoids recapitulate the main morphological, structural and functional features of their in vivo counterparts. Engineering approaches empower researchers to manipulate cell behaviors, the surrounding environment and cell-environment crosstalk within the culture system as needed. These techniques can be applied to the SG organoid culture system to generate functionally more competent SG organoids. This review aims to provide an overview of recent advancements in SG organoid engineering. It highlights some potential strategies for SG organoid functionalization that are promising to forge a platform for engineering vascularized, innervated, immune-interactive and lipogenic SG organoids. We anticipate that this review will not only contribute to improving our understanding of SG biology and regeneration but also facilitate the transition of the SG organoid from laboratory research to a feasible clinical application.
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Affiliation(s)
- Yiqiong Liu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Huanhuan Gao
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Huating Chen
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Shuaifei Ji
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Lu Wu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Hongliang Zhang
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Yujia Wang
- Queen Mary School of Nanchang University, Nanchang University, Nanchang, Jiangxi 330006, P. R. China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Xiaoyan Sun
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
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3
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Zylberberg AK, Cottle DL, Runting J, Rodrigues G, Tham MS, Jones LK, Cumming HE, Short KM, Zaph C, Smyth IM. Modulating inflammation with interleukin 37 treatment ameliorates murine Autosomal Dominant Polycystic Kidney Disease. Kidney Int 2024; 105:731-743. [PMID: 38158181 DOI: 10.1016/j.kint.2023.12.006] [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: 12/08/2022] [Revised: 11/15/2023] [Accepted: 12/01/2023] [Indexed: 01/03/2024]
Abstract
Autosomal Dominant Polycystic Kidney Disease (ADPKD) is a leading cause of kidney failure and is associated with substantial morbidity and mortality. Interstitial inflammation is attributed to the action of infiltrating macrophages and is a feature thought to aggravate disease progression. Here, we investigated the therapeutic potential of the anti-inflammatory IL37b cytokine as a treatment for ADPKD using genetic mouse models, demonstrating that transgenic expression of human IL37b reduced collecting duct cyst burden in both early and adult-onset ADPKD rodent models. Moreover, injection of recombinant human IL37b could also reduce cyst burden in early onset ADPKD mice, an observation not associated with increased macrophage number at early stages of cyst formation. Interestingly, transgenic IL37b expression also did not alter macrophage numbers in advanced disease. Whole kidney RNA-seq highlighted an IL37b-mediated upregulation of the interferon signaling pathway and single-cell RNA-seq established that these changes originate at least partly from kidney resident macrophages. We further found that blocking type I interferon signaling in mice expressing IL37b resulted in increased cyst number, confirming this as an important pathway by which IL37b exerts its beneficial effects. Thus, our studies show that IL37b promotes interferon signaling in kidney resident macrophages which suppresses cyst initiation, identifying this protein as a potential therapy for ADPKD.
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Affiliation(s)
- Allara K Zylberberg
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Denny L Cottle
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia.
| | - Jessica Runting
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Grace Rodrigues
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Ming Shen Tham
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Lynelle K Jones
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Helen E Cumming
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Kieran M Short
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Colby Zaph
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Ian M Smyth
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia.
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4
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Tham MS, Cottle DL, Zylberberg AK, Short KM, Jones LK, Chan P, Conduit SE, Dyson JM, Mitchell CA, Smyth IM. Deletion of Aurora kinase A prevents the development of polycystic kidney disease in mice. Nat Commun 2024; 15:371. [PMID: 38191531 PMCID: PMC10774271 DOI: 10.1038/s41467-023-44410-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 12/09/2023] [Indexed: 01/10/2024] Open
Abstract
Aurora Kinase A (AURKA) promotes cell proliferation and is overexpressed in different types of polycystic kidney disease (PKD). To understand AURKA's role in regulating renal cyst development we conditionally deleted the gene in mouse models of Autosomal Dominant PKD (ADPKD) and Joubert Syndrome, caused by Polycystin 1 (Pkd1) and Inositol polyphosphate-5-phosphatase E (Inpp5e) mutations respectively. We show that while Aurka is dispensable for collecting duct development and homeostasis, its deletion prevents cyst formation in both disease models. Cross-comparison of transcriptional changes implicated AKT signaling in cyst prevention and we show that (i) AURKA and AKT physically interact, (ii) AURKA regulates AKT activity in a kinase-independent manner and (iii) inhibition of AKT can reduce disease severity. AKT activation also regulates Aurka expression, creating a feed-forward loop driving renal cystogenesis. We find that the AURKA kinase inhibitor Alisertib stabilises the AURKA protein, agonizing its cystogenic functions. These studies identify AURKA as a master regulator of renal cyst development in different types of PKD, functioning in-part via AKT.
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Affiliation(s)
- Ming Shen Tham
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Denny L Cottle
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
| | - Allara K Zylberberg
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Kieran M Short
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Lynelle K Jones
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Perkin Chan
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Sarah E Conduit
- Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Jennifer M Dyson
- Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Christina A Mitchell
- Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Ian M Smyth
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
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5
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Melnik BC. Acne Transcriptomics: Fundamentals of Acne Pathogenesis and Isotretinoin Treatment. Cells 2023; 12:2600. [PMID: 37998335 PMCID: PMC10670572 DOI: 10.3390/cells12222600] [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: 10/07/2023] [Revised: 11/05/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
This review on acne transcriptomics allows for deeper insights into the pathogenesis of acne and isotretinoin's mode of action. Puberty-induced insulin-like growth factor 1 (IGF-1), insulin and androgen signaling activate the kinase AKT and mechanistic target of rapamycin complex 1 (mTORC1). A Western diet (hyperglycemic carbohydrates and milk/dairy products) also co-stimulates AKT/mTORC1 signaling. The AKT-mediated phosphorylation of nuclear FoxO1 and FoxO3 results in their extrusion into the cytoplasm, a critical switch which enhances the transactivation of lipogenic and proinflammatory transcription factors, including androgen receptor (AR), sterol regulatory element-binding transcription factor 1 (SREBF1), peroxisome proliferator-activated receptor γ (PPARγ) and signal transducer and activator of transcription 3 (STAT3), but reduces the FoxO1-dependent expression of GATA binding protein 6 (GATA6), the key transcription factor for infundibular keratinocyte homeostasis. The AKT-mediated phosphorylation of the p53-binding protein MDM2 promotes the degradation of p53. In contrast, isotretinoin enhances the expression of p53, FoxO1 and FoxO3 in the sebaceous glands of acne patients. The overexpression of these proapoptotic transcription factors explains isotretinoin's desirable sebum-suppressive effect via the induction of sebocyte apoptosis and the depletion of BLIMP1(+) sebocyte progenitor cells; it also explains its adverse effects, including teratogenicity (neural crest cell apoptosis), a reduced ovarian reserve (granulosa cell apoptosis), the risk of depression (the apoptosis of hypothalamic neurons), VLDL hyperlipidemia, intracranial hypertension and dry skin.
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Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, 49069 Osnabrück, Germany
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6
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Veniaminova NA, Jia YY, Hartigan AM, Huyge TJ, Tsai SY, Grachtchouk M, Nakagawa S, Dlugosz AA, Atwood SX, Wong SY. Distinct mechanisms for sebaceous gland self-renewal and regeneration provide durability in response to injury. Cell Rep 2023; 42:113121. [PMID: 37715952 PMCID: PMC10591672 DOI: 10.1016/j.celrep.2023.113121] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/01/2023] [Accepted: 08/25/2023] [Indexed: 09/18/2023] Open
Abstract
Sebaceous glands (SGs) release oils that protect our skin, but how these glands respond to injury has not been previously examined. Here, we report that SGs are largely self-renewed by dedicated stem cell pools during homeostasis. Using targeted single-cell RNA sequencing, we uncovered both direct and indirect paths by which resident SG progenitors ordinarily differentiate into sebocytes, including transit through a Krt5+PPARγ+ transitional basal cell state. Upon skin injury, however, SG progenitors depart their niche, reepithelialize the wound, and are replaced by hair-follicle-derived stem cells. Furthermore, following targeted genetic ablation of >99% of SGs from dorsal skin, these glands unexpectedly regenerate within weeks. This regenerative process is mediated by alternative stem cells originating from the hair follicle bulge, is dependent upon FGFR2 signaling, and can be accelerated by inducing hair growth. Altogether, our studies demonstrate that stem cell plasticity promotes SG durability following injury.
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Affiliation(s)
- Natalia A Veniaminova
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yunlong Y Jia
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Adrien M Hartigan
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Thomas J Huyge
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shih-Ying Tsai
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Marina Grachtchouk
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Seitaro Nakagawa
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Dermatology, Department of Cutaneous Immunology and Microbiology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Andrzej A Dlugosz
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Scott X Atwood
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA.
| | - Sunny Y Wong
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
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7
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Guo M, Xiong Y. Sex-biased genome-editing effects of CRISPR-Cas9 across cancer cells dependent on p53 status. iScience 2023; 26:107529. [PMID: 37636042 PMCID: PMC10448110 DOI: 10.1016/j.isci.2023.107529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 06/12/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023] Open
Abstract
The CRISPR-Cas9 system has emerged as the dominant technology for gene editing and clinical applications. One major concern is its off-target effect after the introduction of exogenous CRISPR-Cas9 into cells. Several previous studies have investigated either Cas9 alone or CRISPR-Cas9 interactions with p53. Here, we reanalyzed previously reported data of p53-associated Cas9 activities and observed large significant sex differences between p53-wildtype and p53-mutant cells. To expand the impact of this finding, we further examined all protein-coding genes for sex-specific dependencies in a large-scale CRISPR-Cas9 screening dataset from the DepMap project. We highlighted the p53-dependent sex bias of gene knockouts (including MYC, PIK3CA, KAT2B, KDM4E, SUV39H1, FANCB, TLR7, and APC2) across cancer types and potential mechanisms (mediated by transcriptional factors, including SOX9, FOXO4, LEF1, and RYBP) underlying this phenomenon. Our results suggest that the p53-dependent sex bias may need to be considered in future clinical applications of CRISPR-Cas9, especially in cancer.
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Affiliation(s)
- Mengbiao Guo
- Key Laboratory of Gene Engineering of the Ministry of Education, Institute of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuanyan Xiong
- Key Laboratory of Gene Engineering of the Ministry of Education, Institute of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
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8
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Veniaminova NA, Jia Y, Hartigan AM, Huyge TJ, Tsai SY, Grachtchouk M, Nakagawa S, Dlugosz AA, Atwood SX, Wong SY. Distinct mechanisms for sebaceous gland self-renewal and regeneration provide durability in response to injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.05.539454. [PMID: 37205445 PMCID: PMC10187279 DOI: 10.1101/2023.05.05.539454] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Sebaceous glands (SGs) release oils that protect our skin, but how these glands respond to injury has not been previously examined. Here, we report that SGs are largely self-renewed by dedicated stem cell pools during homeostasis. Using targeted single cell RNA-sequencing, we uncovered both direct and indirect paths by which these resident SG progenitors ordinarily differentiate into sebocytes, including transit through a PPARγ+Krt5+ transitional cell state. Upon skin injury, however, SG progenitors depart their niche, reepithelialize the wound, and are replaced by hair follicle-derived stem cells. Furthermore, following targeted genetic ablation of >99% of SGs from dorsal skin, these glands unexpectedly regenerate within weeks. This regenerative process is mediated by alternative stem cells originating from the hair follicle bulge, is dependent upon FGFR signaling, and can be accelerated by inducing hair growth. Altogether, our studies demonstrate that stem cell plasticity promotes SG durability following injury.
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Affiliation(s)
- Natalia A. Veniaminova
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yunlong Jia
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Adrien M. Hartigan
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Thomas J. Huyge
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shih-Ying Tsai
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Marina Grachtchouk
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Seitaro Nakagawa
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Andrzej A. Dlugosz
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Scott X. Atwood
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Sunny Y. Wong
- Department of Dermatology, Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
- Lead Contact:
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9
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Genome-wide meta-analysis identifies novel loci conferring risk of acne vulgaris. Eur J Hum Genet 2023:10.1038/s41431-023-01326-8. [PMID: 36922633 DOI: 10.1038/s41431-023-01326-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 02/02/2023] [Accepted: 02/21/2023] [Indexed: 03/18/2023] Open
Abstract
Acne vulgaris is a common chronic skin disorder presenting with comedones, cystic structures forming within the distal hair follicle, and in most cases additionally with inflammatory skin lesions on the face and upper torso. We performed a genome-wide association study and meta-analysis of data from 34,422 individuals with acne and 364,991 controls from three independent European-ancestry cohorts. We replicated 19 previously implicated genome-wide significant risk loci and identified four novel loci [11q12.2 (FADS2), 12q21.1 (LGR5), 17q25.3 (FASN), and 22q12.1 (ZNRF3-KREMEN1)], bringing the total number of reported acne risk loci to 50. Our meta-analysis results explain 9.4% of the phenotypic variance of acne. A polygenic model of acne risk variants showed that individuals in the top 5% of the risk percentiles had a 1.62-fold (95% CI 1.47-1.78) increased acne risk relative to individuals with average risk (20-80% on the polygenic risk score distribution). Our findings highlight the Wnt and MAPK pathways as key factors in the genetic predisposition to acne vulgaris, together with the effects of genetic variation on the structure and maintenance of the hair follicle and pilosebaceous unit. Two novel loci, 11q12.2 and 17q25.3, contain genes encoding key enzymes involved in lipid biosynthesis pathways.
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10
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Peterson C, Hicks JL, De Marzo AM, Campbell AA, Eberhart CG, Dubielzig RR, Teixeira LB. Upregulated MYC expression and p53 mutations may contribute to the oncogenesis of canine Meibomian gland carcinomas. Vet Pathol 2023; 60:185-189. [PMID: 36541627 DOI: 10.1177/03009858221143400] [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: 12/24/2022]
Abstract
Sebaceous carcinomas of the human ocular adnexa commonly exhibit pagetoid spread, mutations in tumor-suppressor genes, and protooncogene copy number gain. Sebaceous carcinomas are rarely reported in other species, and while the Meibomian gland (MG) represents the most common ocular adnexal structure of the canine eyelid to develop neoplasia, most are clinically and histologically benign. The objective of this study was to compare molecular features of canine MG carcinomas and adenomas. Two retrospectively identified MG carcinomas were subject to immunohistochemistry and qPCR. When compared with normal glands, MYC was upregulated in benign and malignant MG neoplasms. Aberrant p53 expression was restricted to the nuclei of intraepithelial neoplastic cells in MG carcinomas. Adipophilin expression was diminished in MG neoplasms compared with the normal MG. Our findings, if confirmed in a larger cohort of cases, could suggest that MG oncogenesis in a dog may exhibit similar molecular features as their human counterparts.
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Affiliation(s)
| | - J L Hicks
- Johns Hopkins University School of Medicine, Baltimore, MD
| | - A M De Marzo
- Johns Hopkins University School of Medicine, Baltimore, MD
| | - A A Campbell
- Johns Hopkins University School of Medicine, Baltimore, MD
| | - C G Eberhart
- Johns Hopkins University School of Medicine, Baltimore, MD
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11
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Su Z, Zhang Y, Cao J, Sun Y, Cai Y, Zhang B, He L, Zhang Z, Xie J, Meng Q, Luo L, Li F, Li J, Zhang J, Chen X, Hong A. Hyaluronic acid-FGF2-derived peptide bioconjugates for suppression of FGFR2 and AR simultaneously as an acne antagonist. J Nanobiotechnology 2023; 21:55. [PMID: 36803994 PMCID: PMC9938603 DOI: 10.1186/s12951-023-01812-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/10/2023] [Indexed: 02/19/2023] Open
Abstract
Acne is a chronic skin condition that has serious consequences for mental and social well-being because it frequently occurs on the face. Several acne treatment approaches have commonly been used but have been hampered by side effects or weak activity. Thus, the investigation of the safety and efficacy of anti-acne compounds is of considerable medical importance. Herein, an endogenous peptide (P5) derived from fibroblast growth factors 2 (FGF2) was conjugated to the polysaccharide hyaluronic acid (HA) to generate the bioconjugate nanoparticle HA-P5, which suppresses fibroblast growth factor receptors (FGFRs) to significantly rehabilitate acne lesions and reduce sebum accumulation in vivo and in vitro. Moreover, our results show that HA-P5 inhibits both fibroblast growth factor receptor 2 (FGFR2) and androgen receptor (AR) signalling in SZ95 cells, reverses the acne-prone transcriptome, and decreases sebum secretion. Furthermore, the cosuppression mechanism revealed that HA-P5 blocks FGFR2 activation, as well as the YTH N6-methyladenosine RNA binding protein F3 (YTHDF3) downstream molecules, including an N6-methyladenosine (m6A) reader that facilitates AR translation. More importantly, a significant difference between HA-P5 and the commercial FGFR inhibitor AZD4547 is that HA-P5 does not trigger the overexpression of aldo-keto reductase family 1 member C3 (AKR1C3), which blocks acne treatment by catalyzing the synthesis of testosterone. Overall, we demonstrate that a polysaccharide-conjugated and naturally derived oligopeptide HA-P5 can alleviate acne and act as an optimal FGFR2 inhibitor and reveal that YTHDF3 plays a crucial role in signalling between FGFR2 and AR.
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Affiliation(s)
- Zijian Su
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Yibo Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jieqiong Cao
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
- The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Yuanmeng Sun
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Yuling Cai
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Bihui Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Liu He
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Zilei Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Junye Xie
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Qilin Meng
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Lin Luo
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Fu Li
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jingsheng Li
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jinting Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Xiaojia Chen
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China.
| | - An Hong
- Department of Cell Biology, College of Life Science and Technology, Jinan University; National Engineering Research Center of Genetic Medicine; Guangdong Provincial Key Laboratory of Bioengineering Medicine; Guangdong Provincial Biotechnology Drug & Engineering Technology Research Center, Jinan University, Guangzhou, 510632, Guangdong, China.
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12
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Hou X, Wei Z, Zouboulis CC, Ju Q. Aging in the sebaceous gland. Front Cell Dev Biol 2022; 10:909694. [PMID: 36060807 PMCID: PMC9428133 DOI: 10.3389/fcell.2022.909694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Sebaceous glands (SGs) originate from hair follicular stem cells and secrete lipids to lubricate the skin. The coordinated effects of intrinsic and extrinsic aging factors generate degradation of SGs at a late age. Senescence of SGs could be a mirror of the late aging of both the human body and skin. The procedure of SG aging goes over an initial SG hyperplasia at light-exposed skin areas to end with SG atrophy, decreased sebum secretion, and altered sebum composition, which is related to skin dryness, lack of brightness, xerosis, roughness, desquamation, and pruritus. During differentiation and aging of SGs, many signaling pathways, such as Wnt/β-catenin, c-Myc, aryl hydrocarbon receptor (AhR), and p53 pathways, are involved. Random processes lead to random cell and DNA damage due to the production of free radicals during the lifespan and neuroendocrine system alterations. Extrinsic factors include sunlight exposure (photoaging), environmental pollution, and cigarette smoking, which can directly activate signaling pathways, such as Wnt/β-catenin, Notch, AhR, and p53 pathways, and are probably associated with the de-differentiation and hyperplasia of SGs, or indirectly activate the abovementioned signaling pathways by elevating the inflammation level. The production of ROS during intrinsic SG aging is less, the signaling pathways are activated slowly and mildly, and sebocytes are still differentiated, yet terminal differentiation is not completed. With extrinsic factors, relevant signaling pathways are activated rapidly and fiercely, thus inhibiting the differentiation of progenitor sebocytes and even inducing the differentiation of progenitor sebocytes into keratinocytes. The management of SG aging is also mentioned.
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Affiliation(s)
- Xiaoxiao Hou
- Department of Dermatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
- Berlin Brandenburg Center for Regenerative Therapies, Charite Universitatsmedizin Berlin, Berlin, Germany
| | - Ziyu Wei
- Genetic Skin Disease Center, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
- *Correspondence: Christos C Zouboulis, ; Qiang Ju,
| | - Qiang Ju
- Department of Dermatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- *Correspondence: Christos C Zouboulis, ; Qiang Ju,
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13
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Embigin is a fibronectin receptor that affects sebaceous gland differentiation and metabolism. Dev Cell 2022; 57:1453-1465.e7. [DOI: 10.1016/j.devcel.2022.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 03/19/2022] [Accepted: 05/16/2022] [Indexed: 12/25/2022]
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14
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Inoue T, Kuwano T, Uehara Y, Yano M, Oya N, Takada N, Tanaka S, Ueda Y, Hachiya A, Takahashi Y, Ota N, Murase T. Non-invasive human skin transcriptome analysis using mRNA in skin surface lipids. Commun Biol 2022; 5:215. [PMID: 35264722 PMCID: PMC8907185 DOI: 10.1038/s42003-022-03154-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 02/08/2022] [Indexed: 12/13/2022] Open
Abstract
Non-invasive acquisition of mRNA data from the skin can be extremely useful for understanding skin physiology and diseases. Inspired by the holocrine process, in which the sebaceous glands secrete cell contents into the sebum, we focused on the possible presence of mRNAs in skin surface lipids (SSLs). We found that measurable levels of human mRNAs exist in SSLs, where the sebum protects them from degradation by RNases. The AmpliSeq transcriptome analysis was modified to measure SSL-RNA levels, and our results revealed that the SSL-RNAs predominantly comprised mRNAs derived from sebaceous glands, the epidermis, and hair follicles. Analysis of SSL-RNAs non-invasively collected from patients with atopic dermatitis revealed increased expression of inflammation-related genes and decreased expression of terminal differentiation-related genes, consistent with the results of previous reports. Further, we found that lipid synthesis-related genes were downregulated in the sebaceous glands of patients with atopic dermatitis. These results indicate that the analysis of SSL-RNAs is a promising strategy to understand the pathophysiology of skin diseases. Inoue et al develop a non-invasive method of analyzing human skin mRNA using RNA in skin surface lipids collected with oil-blotting films. The authors outline the validation of this methodology and describe an application to determine transcriptome in skin surface lipids in patients with atopic dermatitis versus healthy skin.
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Affiliation(s)
- Takayoshi Inoue
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan.
| | - Tetsuya Kuwano
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Yuya Uehara
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Michiko Yano
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Naoki Oya
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Naoto Takada
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Shodai Tanaka
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Yui Ueda
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Akira Hachiya
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Yoshito Takahashi
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Noriyasu Ota
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Takatoshi Murase
- Biological Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan.
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15
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Wikramanayake TC, Nicu C, Gherardini J, Mello AC, Chéret J, Paus R. Mitochondrially Localized MPZL3 Functions as a Negative Regulator of Sebaceous Gland Size and Sebocyte Proliferation. J Invest Dermatol 2022; 142:2524-2527.e7. [DOI: 10.1016/j.jid.2021.12.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 11/29/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
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16
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Protooncogene MYC drives human melanocyte melanogenesis and senescence. Cancer Gene Ther 2022; 29:1160-1167. [PMID: 35022520 DOI: 10.1038/s41417-021-00424-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/04/2021] [Accepted: 12/21/2021] [Indexed: 01/10/2023]
Abstract
In spite of extensive research and advances on the molecular biology of melanoma, the process of melanocytic differentiation or its relationship with proliferation is poorly understood. The role of proto-oncogenes in normal melanocyte biology is also intriguing. Proto-oncogene MYC is overexpressed in 40% of melanomas. It has been suggested that MYC can mediate senescence bypass in malignant melanocytes, an important event in melanoma development, likely in cooperation with other oncogenic pathways. However, despite the apparent importance of MYC in melanoma, its functions in normal melanocytes are unknown. We have overexpressed MYC in freshly isolated human primary melanocytes and studied the effects on melanocytic proliferation and differentiation. MYC promoted a transient activation of melanocytes including cell cycle entry, DNA damage and cell migration. Subsequently, MYC induced melanogenesis, increased cellular size and complexity and senescence. Interestingly, we also found strong expression of MYC in regions of human nevi displaying high pigmentation and high expression of senescence marker p16. The results altogether show that MYC drives melanocytic differentiation and suggest that senescence is associated with differentiation. We discuss the implications into the mechanisms governing melanocytic differentiation and the development of melanoma.
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17
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Shang W, Quan Tan AY, van Steensel MAM, Lim X. ABERRANT WNT SIGNALING INDUCES COMEDO-LIKE CHANGES IN THE MURINE UPPER HAIR FOLLICLE. J Invest Dermatol 2021; 142:2603-2612.e6. [PMID: 34929175 DOI: 10.1016/j.jid.2021.11.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 12/20/2022]
Abstract
Stem cell proliferation and differentiation must be carefully balanced to support tissue maintenance and growth. Defective stem cell regulation may underpin diseases in many organs, including the skin. Lrig1-expressing stem cells residing in the HF junction zone (JZ) support sebaceous gland (SG) homeostasis. An emerging hypothesis from observations in both mouse and human holds that imbalances in key stem cell regulatory pathways such as Wnt signaling may lead to abnormal fate determination of these Lrig1+ve cells. They accumulate and form cystic structures in the JZ that are similar to the comedones found in human acne. To test the possible involvement of Wnt signals in this scenario, we used the Lrig1-CreERT2 mouse line to modulate Wnt signaling in JZ stem cells. We observed that persistent activation of Wnt signaling leads to JZ cyst formation with associated SG atrophy. The cysts strongly express stem cell markers and can be partially reduced by all-trans retinoic acid treatment as well as by Hedgehog signaling inhibition. Conversely, loss of Wnt signaling leads to enlargement of JZ, infundibulum and SGs. These data implicate abnormal Wnt signaling in the generation of mouse pathologies that resemble human acne and respond to acne treatments.
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Affiliation(s)
- Wei Shang
- Skin Research Institute of Singapore, Agency for Science, Technology, and Research
| | - Alvin Yong Quan Tan
- Skin Research Institute of Singapore, Agency for Science, Technology, and Research
| | - Maurice A M van Steensel
- Skin Research Institute of Singapore, Agency for Science, Technology, and Research;; Lee Kong Chian School of Medicine, Nanyang Technological University Singapore
| | - Xinhong Lim
- Skin Research Institute of Singapore, Agency for Science, Technology, and Research;.
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18
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Bhuju J, Olesen KM, Muenyi CS, Patel TS, Read RW, Thompson L, Skalli O, Zheng Q, Grice EA, Sutter CH, Sutter TR. Cutaneous Effects of In Utero and Lactational Exposure of C57BL/6J Mice to 2,3,7,8-Tetrachlorodibenzo- p-dioxin. TOXICS 2021; 9:toxics9080192. [PMID: 34437510 PMCID: PMC8402454 DOI: 10.3390/toxics9080192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023]
Abstract
To determine the cutaneous effects of in utero and lactational exposure to the AHR ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), pregnant C57BL/6J mice were exposed by gavage to a vehicle or 5 μg TCDD/kg body weight at embryonic day 12 and epidermal barrier formation and function were studied in their offspring from postnatal day 1 (P1) through adulthood. TCDD-exposed pups were born with acanthosis. This effect was AHR-dependent and subsided by P6 with no evidence of subsequent inflammatory dermatitis. The challenge of adult mice with MC903 showed similar inflammatory responses in control and treated animals, indicating no long-term immunosuppression to this chemical. Chloracne-like sebaceous gland hypoplasia and cyst formation were observed in TCDD-exposed P21 mice, with concomitant microbiome dysbiosis. These effects were reversed by P35. CYP1A1 and CYP1B1 expression in the skin was increased in the exposed mice until P21, then declined. Both CYP proteins co-localized with LRIG1-expressing progenitor cells at the infundibulum. CYP1B1 protein also co-localized with a second stem cell niche in the isthmus. These results indicate that this exposure to TCDD causes a chloracne-like effect without inflammation. Transient activation of the AhR, due to the shorter half-life of TCDD in mice, likely contributes to the reversibility of these effects.
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Affiliation(s)
- Jyoti Bhuju
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
| | - Kristin M Olesen
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
| | - Clarisse S Muenyi
- Department of Surgery, University of Tennessee Health Sciences Center, Memphis, TN 38104, USA
| | - Tejesh S Patel
- Kaplan-Amonette Department of Dermatology, University of Tennessee Health Sciences Center, Memphis, TN 38104, USA
| | - Robert W Read
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
| | - Lauren Thompson
- Integrated Microscopy Center, University of Memphis, Memphis, TN 38152, USA
| | - Omar Skalli
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
- Integrated Microscopy Center, University of Memphis, Memphis, TN 38152, USA
| | - Qi Zheng
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elizabeth A Grice
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Carrie Hayes Sutter
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
- W. Harry Feinstone Center for Genomic Research, University of Memphis, Memphis, TN 38152, USA
| | - Thomas R Sutter
- Department of Biological Sciences, University of Memphis, Memphis, TN 38152, USA
- W. Harry Feinstone Center for Genomic Research, University of Memphis, Memphis, TN 38152, USA
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19
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Peterson C, Moore R, Hicks JL, Morsberger LA, De Marzo AM, Zou Y, Eberhart CG, Campbell AA. NGS Analysis Confirms Common TP53 and RB1 Mutations, and Suggests MYC Amplification in Ocular Adnexal Sebaceous Carcinomas. Int J Mol Sci 2021; 22:8454. [PMID: 34445161 PMCID: PMC8395148 DOI: 10.3390/ijms22168454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/01/2021] [Accepted: 08/04/2021] [Indexed: 01/31/2023] Open
Abstract
Ocular adnexal (OA) sebaceous carcinomas generally demonstrate more aggressive clinical and histopathological phenotypes than extraocular cases, but the molecular drivers implicated in their oncogenesis remain poorly defined. A retrospective review of surgical and ocular pathology archives identified eleven primary resection specimens of OA sebaceous carcinomas with adequate tissue for molecular analysis; two extraocular cases were also examined. Next-generation sequencing was used to evaluate mutations and copy number changes in a large panel of cancer-associated genes. Fluorescence in situ hybridization (FISH) confirmed MYC copy number gain in select cases, and immunohistochemistry to evaluate MYC protein expression. The commonest mutations occurred in TP53 (10/13) and RB1 (7/13). Additional mutations in clinically actionable genes, or mutations with a frequency of at least 25%, included the NF1 (3/12), PMS2 (4/12), ROS1 (3/12), KMT2C (4/12), MNX1 (6/12), NOTCH1 (4/12), PCLO (3/12), and PTPRT (3/12) loci. Low level copy number gain suggestive of amplification of the MYC locus was seen in two cases, and confirmed using FISH. MYC protein expression, as assessed by immunohistochemistry, was present in almost all sebaceous carcinoma cases. Our findings support the concept that alterations in TP53 and RB1 are the commonest alterations in sebaceous carcinoma, and suggest that MYC may contribute to the oncogenesis of these tumors.
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Affiliation(s)
- Cornelia Peterson
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
| | - Robert Moore
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
| | - Jessica L. Hicks
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
| | - Laura A. Morsberger
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
- Clinical Cytogenetics Laboratory, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Johns Hopkins Genomics, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Angelo M. De Marzo
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
- Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- The Brady Urological Research Institute, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ying Zou
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
- Clinical Cytogenetics Laboratory, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Johns Hopkins Genomics, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Charles G. Eberhart
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (R.M.); (J.L.H.); (L.A.M.); (A.M.D.M.); (Y.Z.)
- Department of Ophthalmology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ashley A. Campbell
- Department of Ophthalmology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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20
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Lichtenberger BM, Kasper M. Cellular heterogeneity and microenvironmental control of skin cancer. J Intern Med 2021; 289:614-628. [PMID: 32976658 DOI: 10.1111/joim.13177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
Abstract
Healthy tissues harbour a surprisingly high number of cells that carry well-known cancer-causing mutations without impacting their physiological function. In recent years, strong evidence accumulated that the immediate environment of mutant cells profoundly impact their prospect of malignant progression. In this review, focusing on the skin, we investigate potential key mechanisms that ensure tissue homeostasis despite the presence of mutant cells, as well as critical factors that may nudge the balance from homeostasis to tumour formation. Functional in vivo studies and single-cell transcriptome analyses have revealed a tremendous cellular heterogeneity and plasticity within epidermal (stem) cells and their respective niches, revealing for example wild-type epithelial cells, fibroblasts or immune-cell subsets as critical in preventing cancer formation and malignant progression. It's the same cells, however, that can drive carcinogenesis. Therefore, understanding the abundance and molecular variation of cell types in health and disease, and how they interact and modulate the local signalling environment will thus be key for new therapeutic avenues in our battle against cancer.
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Affiliation(s)
- B M Lichtenberger
- From the, Skin and Endothelium Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - M Kasper
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
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21
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Cottle DL, Ursino GM, Jones LK, Tham MS, Zylberberg AK, Smyth IM. Topical Aminosalicylic Acid Improves Keratinocyte Differentiation in an Inducible Mouse Model of Harlequin Ichthyosis. CELL REPORTS MEDICINE 2020; 1:100129. [PMID: 33294854 PMCID: PMC7691394 DOI: 10.1016/j.xcrm.2020.100129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/10/2020] [Accepted: 10/06/2020] [Indexed: 12/02/2022]
Abstract
Mutations in the lipid transport protein ABCA12 cause the life-threatening skin condition harlequin ichthyosis (HI), which is characterized by the loss of skin barrier function, inflammation, and dehydration. Inflammatory responses in HI increase disease severity by impairing keratinocyte differentiation, suggesting amelioration of this phenotype as a possible therapy for the condition. Existing treatments for HI are based around the use of retinoids, but their value in treating patients during the neonatal period has been questioned relative to other improved management regimens, and their long-term use is associated with side effects. We have developed a conditional mouse model to demonstrate that topical application of the aminosalicylic acid derivatives 5ASA or 4ASA considerably improves HI keratinocyte differentiation without the undesirable side effects of the retinoid acitretin and salicylic acid (aspirin). Analysis of changes in gene expression shows that 4ASA in particular elicits compensatory upregulation of a large family of barrier function-related genes, many of which are associated with other ichthyoses, identifying this compound as a lead candidate for developing topical treatments for HI. Inflammation impairs keratinocyte differentiation and worsens harlequin ichthyosis Harlequin ichthyosis mice can be used to assess therapies for this disease Aminosalicylic acids may be therapeutic treatments for harlequin ichthyosis 4ASA improves skin differentiation and barrier function in harlequin ichthyosis models
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Affiliation(s)
- Denny L. Cottle
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
| | - Gloria M.A. Ursino
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Lynelle K. Jones
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
| | - Ming Shen Tham
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
| | - Allara K. Zylberberg
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
| | - Ian M. Smyth
- Department of Anatomy and Developmental Biology, Development and Stem Cell Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Melbourne, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
- Corresponding author
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22
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Briganti S, Flori E, Mastrofrancesco A, Ottaviani M. Acne as an altered dermato‐endocrine response problem. Exp Dermatol 2020; 29:833-839. [DOI: 10.1111/exd.14168] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Stefania Briganti
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - Enrica Flori
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - Arianna Mastrofrancesco
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - Monica Ottaviani
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
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23
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Xi L, Carroll T, Matos I, Luo JD, Polak L, Pasolli HA, Jaffrey SR, Fuchs E. m6A RNA methylation impacts fate choices during skin morphogenesis. eLife 2020; 9:e56980. [PMID: 32845239 PMCID: PMC7535931 DOI: 10.7554/elife.56980] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 08/25/2020] [Indexed: 12/30/2022] Open
Abstract
N6-methyladenosine is the most prominent RNA modification in mammals. Here, we study mouse skin embryogenesis to tackle m6A's functions and physiological importance. We first landscape the m6A modifications on skin epithelial progenitor mRNAs. Contrasting with in vivo ribosomal profiling, we unearth a correlation between m6A modification in coding sequences and enhanced translation, particularly of key morphogenetic signaling pathways. Tapping physiological relevance, we show that m6A loss profoundly alters these cues and perturbs cellular fate choices and tissue architecture in all skin lineages. By single-cell transcriptomics and bioinformatics, both signaling and canonical translation pathways show significant downregulation after m6A loss. Interestingly, however, many highly m6A-modified mRNAs are markedly upregulated upon m6A loss, and they encode RNA-methylation, RNA-processing and RNA-metabolism factors. Together, our findings suggest that m6A functions to enhance translation of key morphogenetic regulators, while also destabilizing sentinel mRNAs that are primed to activate rescue pathways when m6A levels drop.
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Affiliation(s)
- Linghe Xi
- Howard Hughes Medical Institute, Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller UniversityNew YorkUnited States
| | - Thomas Carroll
- Bioinformatics Resource Center, The Rockefeller UniversityNew YorkUnited States
| | - Irina Matos
- Howard Hughes Medical Institute, Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller UniversityNew YorkUnited States
| | - Ji-Dung Luo
- Bioinformatics Resource Center, The Rockefeller UniversityNew YorkUnited States
| | - Lisa Polak
- Howard Hughes Medical Institute, Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller UniversityNew YorkUnited States
| | - H Amalia Pasolli
- Electron Microscopy Resource Center, The Rockefeller UniversityNew YorkUnited States
| | - Samie R Jaffrey
- Department of Pharmacology, Weill Cornell Medicine, Cornell UniversityNew YorkUnited States
| | - Elaine Fuchs
- Howard Hughes Medical Institute, Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller UniversityNew YorkUnited States
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24
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Yu B, Diao NN, Zhang Y, Li XZ, Yu N, Ding YF, Shi YL. Network pharmacology-based identification for therapeutic mechanisms of Dangguikushen pill in acne vulgaris. Dermatol Ther 2020; 33:e14061. [PMID: 32705750 DOI: 10.1111/dth.14061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/16/2020] [Accepted: 07/21/2020] [Indexed: 11/28/2022]
Abstract
The Dangguikushen (DGKS) pill is a proprietary traditional Chinese medicine that has shown superior efficacy in the treatment of acne vulgaris for many years. A network pharmacology-based analysis was performed to explore the potential anti-acne compounds, core therapeutic targets, and the main pathways, involved in the DGKS pill bioactivity. The matching results between the predicted targets of the DGKS pill and the well-known targets of acne vulgaris were collected, followed by network establishment using protein-protein interaction (PPI) data. Cytoscape was utilized to analyze the network and screen the core targets. Furthermore, the Database for Annotation, Visualization and Integrated Discovery (DAVID), and ClueGO were used for the enrichment analysis of the Kyoto Encyclopedia of Genes and Genomics (KEGG) pathways and Gene Ontology biological processes (GO-BP). Finally, the "compound-target-pathway" network was constructed. This approach identified 19 active compounds, 46 therapeutic targets, and 12 core therapeutic targets of the DGKS pill. The biological processes were primarily related to reactive oxygen species (ROS) metabolic process, gland morphogenesis, and female gonad development. The DGKS pill was significantly associated with eight pathways including the PI3K-Akt, TNF, NF-kappa B, and p53 signaling pathways. DGKS pill might have a synergistic effect on the inhibition of excessive sebaceous lipogenesis and sebocyte differentiation, and likewise, anti-inflammatory effects via the different signaling pathways (PI3K-Akt, TNF, NF-kappa B, and p53).
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Affiliation(s)
- Bo Yu
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Nan-Nan Diao
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Ying Zhang
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Xing-Zi Li
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Ning Yu
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Yang-Feng Ding
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
| | - Yu-Ling Shi
- Department of Dermatology, Shanghai Skin Disease Hospital, Shanghai, China.,Institute of Psoriasis, Tongji University School of Medicine, Shanghai, Puerto Rico, China
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25
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Clayton RW, Langan EA, Ansell DM, de Vos IJHM, Göbel K, Schneider MR, Picardo M, Lim X, van Steensel MAM, Paus R. Neuroendocrinology and neurobiology of sebaceous glands. Biol Rev Camb Philos Soc 2020; 95:592-624. [PMID: 31970855 DOI: 10.1111/brv.12579] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022]
Abstract
The nervous system communicates with peripheral tissues through nerve fibres and the systemic release of hypothalamic and pituitary neurohormones. Communication between the nervous system and the largest human organ, skin, has traditionally received little attention. In particular, the neuro-regulation of sebaceous glands (SGs), a major skin appendage, is rarely considered. Yet, it is clear that the SG is under stringent pituitary control, and forms a fascinating, clinically relevant peripheral target organ in which to study the neuroendocrine and neural regulation of epithelia. Sebum, the major secretory product of the SG, is composed of a complex mixture of lipids resulting from the holocrine secretion of specialised epithelial cells (sebocytes). It is indicative of a role of the neuroendocrine system in SG function that excess circulating levels of growth hormone, thyroxine or prolactin result in increased sebum production (seborrhoea). Conversely, growth hormone deficiency, hypothyroidism, and adrenal insufficiency result in reduced sebum production and dry skin. Furthermore, the androgen sensitivity of SGs appears to be under neuroendocrine control, as hypophysectomy (removal of the pituitary) renders SGs largely insensitive to stimulation by testosterone, which is crucial for maintaining SG homeostasis. However, several neurohormones, such as adrenocorticotropic hormone and α-melanocyte-stimulating hormone, can stimulate sebum production independently of either the testes or the adrenal glands, further underscoring the importance of neuroendocrine control in SG biology. Moreover, sebocytes synthesise several neurohormones and express their receptors, suggestive of the presence of neuro-autocrine mechanisms of sebocyte modulation. Aside from the neuroendocrine system, it is conceivable that secretion of neuropeptides and neurotransmitters from cutaneous nerve endings may also act on sebocytes or their progenitors, given that the skin is richly innervated. However, to date, the neural controls of SG development and function remain poorly investigated and incompletely understood. Botulinum toxin-mediated or facial paresis-associated reduction of human sebum secretion suggests that cutaneous nerve-derived substances modulate lipid and inflammatory cytokine synthesis by sebocytes, possibly implicating the nervous system in acne pathogenesis. Additionally, evidence suggests that cutaneous denervation in mice alters the expression of key regulators of SG homeostasis. In this review, we examine the current evidence regarding neuroendocrine and neurobiological regulation of human SG function in physiology and pathology. We further call attention to this line of research as an instructive model for probing and therapeutically manipulating the mechanistic links between the nervous system and mammalian skin.
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Affiliation(s)
- Richard W Clayton
- Centre for Dermatology, School of Biological Sciences, University of Manchester, and NIHR Manchester Biomedical Research Centre, Stopford Building, Oxford Road, Manchester, M13 9PT, U.K.,Skin Research Institute of Singapore, Agency for Science, Technology and Research, 11 Mandalay Road, #17-01 Clinical Sciences Building, 308232, Singapore
| | - Ewan A Langan
- Centre for Dermatology, School of Biological Sciences, University of Manchester, and NIHR Manchester Biomedical Research Centre, Stopford Building, Oxford Road, Manchester, M13 9PT, U.K.,Department of Dermatology, Allergology und Venereology, University of Lübeck, Ratzeburger Allee 160, Lübeck, 23538, Germany
| | - David M Ansell
- Centre for Dermatology, School of Biological Sciences, University of Manchester, and NIHR Manchester Biomedical Research Centre, Stopford Building, Oxford Road, Manchester, M13 9PT, U.K.,Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Michael Smith Building, Oxford Road, Manchester, M13 9PT, U.K
| | - Ivo J H M de Vos
- Skin Research Institute of Singapore, Agency for Science, Technology and Research, 11 Mandalay Road, #17-01 Clinical Sciences Building, 308232, Singapore
| | - Klaus Göbel
- Skin Research Institute of Singapore, Agency for Science, Technology and Research, 11 Mandalay Road, #17-01 Clinical Sciences Building, 308232, Singapore.,Department of Dermatology, Cologne Excellence Cluster on Stress Responses in Aging Associated Diseases (CECAD), and Centre for Molecular Medicine Cologne, The University of Cologne, Joseph-Stelzmann-Straße 26, Cologne, 50931, Germany
| | - Marlon R Schneider
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Max-Dohrn-Straße 8-10, Berlin, 10589, Germany
| | - Mauro Picardo
- Cutaneous Physiopathology and Integrated Centre of Metabolomics Research, San Gallicano Dermatological Institute IRCCS, Via Elio Chianesi 53, Rome, 00144, Italy
| | - Xinhong Lim
- Lee Kong Chian School of Medicine, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Maurice A M van Steensel
- Skin Research Institute of Singapore, Agency for Science, Technology and Research, 11 Mandalay Road, #17-01 Clinical Sciences Building, 308232, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Ralf Paus
- Centre for Dermatology, School of Biological Sciences, University of Manchester, and NIHR Manchester Biomedical Research Centre, Stopford Building, Oxford Road, Manchester, M13 9PT, U.K.,Dr. Phllip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, 1600 NW 10th Avenue, RMSB 2023A, Miami, FL, 33136, U.S.A.,Monasterium Laboratory, Mendelstraße 17, Münster, 48149, Germany
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26
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Niche-Specific Factors Dynamically Regulate Sebaceous Gland Stem Cells in the Skin. Dev Cell 2019; 51:326-340.e4. [PMID: 31564613 DOI: 10.1016/j.devcel.2019.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/22/2019] [Accepted: 08/23/2019] [Indexed: 12/22/2022]
Abstract
Oil-secreting sebaceous glands (SGs) are critical for proper skin function; however, it remains unclear how different factors act together to modulate SG stem cells. Here, we provide functional evidence that each SG lobe is serviced by its own dedicated stem cell population. Upon ablating Notch signaling in different skin subcompartments, we find that this pathway exerts dual counteracting effects on SGs. Suppressing Notch in SG progenitors traps them in a hybrid state where stem and differentiation features become intermingled. In contrast, ablating Notch outside of the SG stem cell compartment indirectly drives SG expansion. Finally, we report that a K14:K5→K14:K79 keratin shift occurs during SG differentiation. Deleting K79 destabilizes K14 in sebocytes, and attenuates SGs and eyelid meibomian glands, leading to corneal ulceration. Altogether, our findings demonstrate that SGs integrate diverse signals from different niches and suggest that mutations incurred within one stem cell compartment can indirectly influence another.
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27
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Andersen MS, Hannezo E, Ulyanchenko S, Estrach S, Antoku Y, Pisano S, Boonekamp KE, Sendrup S, Maimets M, Pedersen MT, Johansen JV, Clement DL, Feral CC, Simons BD, Jensen KB. Tracing the cellular dynamics of sebaceous gland development in normal and perturbed states. Nat Cell Biol 2019; 21:924-932. [PMID: 31358966 PMCID: PMC6978139 DOI: 10.1038/s41556-019-0362-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 06/18/2019] [Indexed: 12/12/2022]
Abstract
The sebaceous gland (SG) is an essential component of the skin, and SG dysfunction is debilitating1,2. Yet, the cellular bases for its origin, development and subsequent maintenance remain poorly understood. Here, we apply large-scale quantitative fate mapping to define the patterns of cell fate behaviour during SG development and maintenance. We show that the SG develops from a defined number of lineage-restricted progenitors that undergo a programme of independent and stochastic cell fate decisions. Following an expansion phase, equipotent progenitors transition into a phase of homeostatic turnover, which is correlated with changes in the mechanical properties of the stroma and spatial restrictions on gland size. Expression of the oncogene KrasG12D results in a release from these constraints and unbridled gland expansion. Quantitative clonal fate analysis reveals that, during this phase, the primary effect of the Kras oncogene is to drive a constant fate bias with little effect on cell division rates. These findings provide insight into the developmental programme of the SG, as well as the mechanisms that drive tumour progression and gland dysfunction.
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Affiliation(s)
- Marianne Stemann Andersen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Edouard Hannezo
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK
- The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
- The Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Svetlana Ulyanchenko
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Soline Estrach
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Yasuko Antoku
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Sabrina Pisano
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Kim E Boonekamp
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Sarah Sendrup
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Martti Maimets
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Terndrup Pedersen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens V Johansen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Ditte L Clement
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Chloe C Feral
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Benjamin D Simons
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
- The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK.
- The Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK.
| | - Kim B Jensen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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28
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Feldman A, Mukha D, Maor II, Sedov E, Koren E, Yosefzon Y, Shlomi T, Fuchs Y. Blimp1 + cells generate functional mouse sebaceous gland organoids in vitro. Nat Commun 2019; 10:2348. [PMID: 31138796 PMCID: PMC6538623 DOI: 10.1038/s41467-019-10261-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/25/2019] [Indexed: 11/17/2022] Open
Abstract
Most studies on the skin focus primarily on the hair follicle and interfollicular epidermis, whereas little is known regarding the homeostasis of the sebaceous gland (SG). The SG has been proposed to be replenished by different pools of hair follicle stem cells and cells that resides in the SG base, marked by Blimp1. Here, we demonstrate that single Blimp1+ cells isolated from mice have the potential to generate SG organoids in vitro. Mimicking SG homeostasis, the outer layer of these organoids is composed of proliferating cells that migrate inward, undergo terminal differentiation and generating lipid-filled sebocytes. Performing confocal microscopy and mass-spectrometry, we report that these organoids exhibit known markers and a lipidomic profile similar to SGs in vivo. Furthermore, we identify a role for c-Myc in sebocyte proliferation and differentiation, and determine that SG organoids can serve as a platform for studying initial stages of acne vulgaris, making this a useful platform to identify potential therapeutic targets. The sebaceous gland (SG) has been proposed to be replenished by pools of cells, including a population in the SG base, marked by Blimp1. Here, the authors show that Blimp1+ cells can establish an organoid model of the SG, which is regulated by c-Myc and can recapitulate the early stages of acne vulgaris.
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Affiliation(s)
- Alona Feldman
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Dzmitry Mukha
- Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Department of Computer Science, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Itzhak I Maor
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Egor Sedov
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Elle Koren
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Yahav Yosefzon
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Tomer Shlomi
- Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel.,Department of Computer Science, Technion Israel Institute of Technology, 3200003, Haifa, Israel
| | - Yaron Fuchs
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion Israel Institute of Technology, 3200003, Haifa, Israel. .,Lorry Lokey Interdisciplinary Center for Life Sciences & Engineering, Technion Israel Institute of Technology, 3200003, Haifa, Israel. .,Technion Integrated Cancer Center, Technion Israel Institute of Technology, 3200003, Haifa, Israel.
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29
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Clayton R, Göbel K, Niessen C, Paus R, Steensel M, Lim X. Homeostasis of the sebaceous gland and mechanisms of acne pathogenesis. Br J Dermatol 2019; 181:677-690. [DOI: 10.1111/bjd.17981] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2019] [Indexed: 12/13/2022]
Affiliation(s)
- R.W. Clayton
- Skin Research Institute of Singapore Agency for Science, Technology and Research (A*STAR) Singapore
- Centre for Dermatology Research University of Manchester, and NIHR Manchester Biomedical Research Centre Manchester U.K
| | - K. Göbel
- Skin Research Institute of Singapore Agency for Science, Technology and Research (A*STAR) Singapore
- Department of Dermatology Cologne Excellence Cluster on Stress Responses in Aging Associated Diseases (CECAD), and Centre for Molecular Medicine Cologne The University of Cologne Germany
| | - C.M. Niessen
- Department of Dermatology Cologne Excellence Cluster on Stress Responses in Aging Associated Diseases (CECAD), and Centre for Molecular Medicine Cologne The University of Cologne Germany
| | - R. Paus
- Centre for Dermatology Research University of Manchester, and NIHR Manchester Biomedical Research Centre Manchester U.K
- Department of Dermatology and Cutaneous Surgery University of Miami Miller School of Medicine Miami FL U.S.A
| | - M.A.M. Steensel
- Skin Research Institute of Singapore Agency for Science, Technology and Research (A*STAR) Singapore
- Lee Kong Chian School of Medicine Nanyang Technological University Singapore
| | - X. Lim
- Skin Research Institute of Singapore Agency for Science, Technology and Research (A*STAR) Singapore
- Lee Kong Chian School of Medicine Nanyang Technological University Singapore
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30
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Cong TX, Hao D, Wen X, Li XH, He G, Jiang X. From pathogenesis of acne vulgaris to anti-acne agents. Arch Dermatol Res 2019; 311:337-349. [PMID: 30859308 DOI: 10.1007/s00403-019-01908-x] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 03/03/2019] [Accepted: 03/05/2019] [Indexed: 02/05/2023]
Abstract
Acne vulgaris is a cutaneous chronic inflammatory disorder with complex pathogenesis. Four factors play vital roles in acne pathophysiology: hyperseborrhea and dysseborrhea, altered keratinization of the pilosebaceous duct, Cutibacterium acnes (C. acnes) and inflammation. The main hormones responsible for the development of acne vulgaris include androgens, insulin and insulin-like growth factor-1. Other factors involved in this process are corticotropin-releasing hormone, α-melanocyte-stimulating hormone and substance P. Wnt/β-catenin signaling pathway, phosphoinositide 3-kinase (PI3K)/Akt pathway, mitogen-activated protein kinase pathway, adenosine 5'-monophosphate-activated protein kinase pathway and nuclear factor kappa B pathway participate in the modulation of sebocyte, keratinocyte and inflammatory cell (e.g. lymphocytes, monocytes, macrophages, neutrophils) activity. Among all the triggers and pathways mentioned above, IGF-1-induced PI3K/Akt/Forkhead box protein O1/mammalian target of rapamycin (mTOR) C1 pathway is the most important signaling responsible for acne pathogenesis. Commonly used anti-acne agents include retinoids, benzoyl peroxide, antibiotics and hormonal agents (e.g. spironolactone, combination oral contraceptive and flutamide). New approaches including peroxisome proliferator-activated receptor γ modifier, melanocortin receptor antagonists, epigallocatechin-3-gallate, metformin, olumacostat glasaretil, stearoyl-CoA desaturase inhibitor omiganan pentahydrochloride, KDPT, afamelanotide, apremilast and biologics have been developed as promising treatments for acne vulgaris. Although these anti-acne agents have various pharmacological effects against the diverse pathogenesis of acne, all of them have a synergistic mode of action, the attenuation of Akt/mTORC1 signaling and enhancement of p53 signal transduction. In addition to drug therapy, diet with no hyperglycemic carbohydrates, no milk and dairy products is also beneficial for treatment of acne.
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Affiliation(s)
- Tian-Xin Cong
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Dan Hao
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiang Wen
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiao-Hua Li
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, People's Republic of China
| | - Xian Jiang
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China.
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Common J, Barker J, Steensel M. What does acne genetics teach us about disease pathogenesis? Br J Dermatol 2019; 181:665-676. [DOI: 10.1111/bjd.17721] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2019] [Indexed: 12/18/2022]
Affiliation(s)
- J.E.A. Common
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR) Singapore
| | - J.N. Barker
- St John's Institute of Dermatology Faculty of Life Sciences and Medicine King's College London London U.K
| | - M.A.M. Steensel
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR) Singapore
- Lee Kong Chian School of Medicine Nanyang Technological University Clinical Sciences Building Novena Singapore
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32
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Yunoki T, Miyakoshi A, Otsuka M, Hayashi A. Clinicopathological features of considerable reduction in androgen receptor expression in sebaceous gland carcinoma of the eyelid. Int Ophthalmol 2018; 39:1703-1708. [DOI: 10.1007/s10792-018-0990-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/12/2018] [Indexed: 12/30/2022]
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Karmouch J, Zhou QQ, Miyake CY, Lombardi R, Kretzschmar K, Bannier-Hélaouët M, Clevers H, Wehrens XHT, Willerson JT, Marian AJ. Distinct Cellular Basis for Early Cardiac Arrhythmias, the Cardinal Manifestation of Arrhythmogenic Cardiomyopathy, and the Skin Phenotype of Cardiocutaneous Syndromes. Circ Res 2017; 121:1346-1359. [PMID: 29018034 PMCID: PMC5722680 DOI: 10.1161/circresaha.117.311876] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/22/2017] [Accepted: 10/09/2017] [Indexed: 11/16/2022]
Abstract
RATIONALE Arrhythmogenic cardiomyopathy is caused primarily by mutations in genes encoding desmosome proteins. Ventricular arrhythmias are the cardinal and typically early manifestations, whereas myocardial fibroadiposis is the pathological hallmark. Homozygous DSP (desmoplakin) and JUP (junction protein plakoglobin) mutations are responsible for a subset of patients with arrhythmogenic cardiomyopathy who exhibit cardiac arrhythmias and dysfunction, palmoplanter keratosis, and hair abnormalities (cardiocutaneous syndromes). OBJECTIVE To determine phenotypic consequences of deletion of Dsp in a subset of cells common to the heart and skin. METHODS AND RESULTS Expression of CSPG4 (chondroitin sulfate proteoglycan 4) was detected in epidermal keratinocytes and the cardiac conduction system. CSPG4pos cells constituted ≈5.6±3.3% of the nonmyocyte cells in the mouse heart. Inducible postnatal deletion of Dsp under the transcriptional control of the Cspg4 locus led to ventricular arrhythmias, atrial fibrillation, atrioventricular conduction defects, and death by 4 months of age. Cardiac arrhythmias occurred early and in the absence of cardiac dysfunction and excess cardiac fibroadipocytes, as in human arrhythmogenic cardiomyopathy. The mice exhibited palmoplantar keratosis and progressive alopecia, leading to alopecia totalis, associated with accelerated proliferation and impaired terminal differentiation of keratinocytes. The phenotype is similar to human cardiocutaneous syndromes caused by homozygous mutations in DSP. CONCLUSIONS Deletion of Dsp under the transcriptional regulation of the CSPG4 locus led to lethal cardiac arrhythmias in the absence of cardiac dysfunction or fibroadiposis, palmoplantar keratosis, and alopecia, resembling the human cardiocutaneous syndromes. The findings offer a cellular basis for early cardiac arrhythmias in patients with arrhythmogenic cardiomyopathy and cardiocutaneous syndromes.
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Affiliation(s)
- Jennifer Karmouch
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Qiong Q Zhou
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Christina Y Miyake
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Raffaella Lombardi
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Kai Kretzschmar
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Marie Bannier-Hélaouët
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Hans Clevers
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Xander H T Wehrens
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - James T Willerson
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.)
| | - Ali J Marian
- From the Center for Cardiovascular Genetics, Institute of Molecular Medicine, The University of Texas Health Sciences Center, Houston (J.K., Q.Q.Z., R.L., J.T.W., A.J.M.); Texas Heart Institute, Houston (J.T.W., A.J.M.); Cardiovascular Research Institute, Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX (C.Y.M., X.H.T.W.); Department of Pediatrics, Texas Children Hospital, Houston (C.Y.M.); Hubrecht Institute, University Medical Center, Utrecht, The Netherlands (K.K., M.B.-H., H.C.); Royal Netherlands Academy of Arts and Sciences and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands (H.C.); and École Normale Supérieure de Lyon, France (M.B.-H.).
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Gollnick H, Abanmi A, Al-Enezi M, Al Hammadi A, Galadari I, Kibbi AG, Zimmo S. Managing acne in the Middle East: consensus recommendations. J Eur Acad Dermatol Venereol 2017; 31 Suppl 7:4-35. [DOI: 10.1111/jdv.14491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- H. Gollnick
- Universitätsklinik für Dermatologie und Venerologie; Otto-von-Guericke Universität; Magdeburg Germany
| | - A.A. Abanmi
- Dr Sulaiman Al Habib Hospital; Riyadh Saudi Arabia
| | | | | | - I. Galadari
- Faculty of Medicine; United Arab Emirates University; Dubai UAE
| | - A.-G. Kibbi
- American University of Beirut Medical Center; Beirut Lebanon
| | - S. Zimmo
- King Abdulaziz University; Jeddah Saudi Arabia
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Abstract
This review based on translational research predicts that the transcription factor p53 is the key effector of all anti-acne therapies. All-trans retinoic acid (ATRA) and isotretinoin (13-cis retinoic acid) enhance p53 expression. Tetracyclines and macrolides via inhibiting p450 enzymes attenuate ATRA degradation, thereby increase p53. Benzoyl peroxide and hydrogen peroxide elicit oxidative stress, which upregulates p53. Azelaic acid leads to mitochondrial damage associated with increased release of reactive oxygen species inducing p53. p53 inhibits the expression of androgen receptor and IGF-1 receptor, and induces the expression of IGF binding protein 3. p53 induces FoxO1, FoxO3, p21 and sestrin 1, sestrin 2, and tumour necrosis factor-related apoptosis-inducing ligand (TRAIL), the key inducer of isotretinoin-mediated sebocyte apoptosis explaining isotretinoin's sebum-suppressive effect. Anti-androgens attenuate the expression of miRNA-125b, a key negative regulator of p53. It can thus be concluded that all anti-acne therapies have a common mode of action, i.e., upregulation of the guardian of the genome p53. Immortalized p53-inactivated sebocyte cultures are unfortunate models for studying acne pathogenesis and treatment.
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Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Am Finkenhügel 7a, 49076, Osnabrück, Germany.
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36
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Donati G, Rognoni E, Hiratsuka T, Liakath-Ali K, Hoste E, Kar G, Kayikci M, Russell R, Kretzschmar K, Mulder KW, Teichmann SA, Watt FM. Wounding induces dedifferentiation of epidermal Gata6 + cells and acquisition of stem cell properties. Nat Cell Biol 2017; 19:603-613. [PMID: 28504705 DOI: 10.1038/ncb3532] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/18/2017] [Indexed: 02/08/2023]
Abstract
The epidermis is maintained by multiple stem cell populations whose progeny differentiate along diverse, and spatially distinct, lineages. Here we show that the transcription factor Gata6 controls the identity of the previously uncharacterized sebaceous duct (SD) lineage and identify the Gata6 downstream transcription factor network that specifies a lineage switch between sebocytes and SD cells. During wound healing differentiated Gata6+ cells migrate from the SD into the interfollicular epidermis and dedifferentiate, acquiring the ability to undergo long-term self-renewal and differentiate into a much wider range of epidermal lineages than in undamaged tissue. Our data not only demonstrate that the structural and functional complexity of the junctional zone is regulated by Gata6, but also reveal that dedifferentiation is a previously unrecognized property of post-mitotic, terminally differentiated cells that have lost contact with the basement membrane. This resolves the long-standing debate about the contribution of terminally differentiated cells to epidermal wound repair.
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Affiliation(s)
- Giacomo Donati
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK.,Cancer Research UK Cambridge Research Institute, Cambridge CB2 0RE, UK.,Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
| | - Emanuel Rognoni
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK
| | - Toru Hiratsuka
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK
| | - Kifayathullah Liakath-Ali
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK
| | - Esther Hoste
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK.,VIB Center for Inflammation Research, Department of Biomedical Molecular Biology (Ghent University), B-9052 Ghent, Belgium
| | - Gozde Kar
- European Bioinformatics Institute and Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SD, UK
| | - Melis Kayikci
- MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK
| | - Roslin Russell
- Cancer Research UK Cambridge Research Institute, Cambridge CB2 0RE, UK
| | - Kai Kretzschmar
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK.,Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, UK.,Hubrecht Institute, KNAW and UMC Utrecht, 3584CT Utrecht, The Netherlands
| | - Klaas W Mulder
- Cancer Research UK Cambridge Research Institute, Cambridge CB2 0RE, UK.,Radboud Institute for Molecular Life Sciences, Department of Molecular Developmental Biology, Radboud University, Nijmegen, The Netherlands
| | - Sarah A Teichmann
- European Bioinformatics Institute and Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SD, UK
| | - Fiona M Watt
- King's College London Centre for Stem Cells and Regenerative Medicine, 28th Floor, Tower Wing, Guy's Campus, Great Maze Pond, London SE1 9RT, UK
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Kawamata M, Katsuda T, Yamada Y, Ochiya T. In vitro reconstitution of breast cancer heterogeneity with multipotent cancer stem cells using small molecules. Biochem Biophys Res Commun 2017; 482:750-757. [DOI: 10.1016/j.bbrc.2016.11.106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 11/17/2016] [Indexed: 01/06/2023]
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Abstract
Background Sebaceous glands contribute significantly to the barrier functions of the skin. However, little is known about their homeostasis and tumorigenesis. Recently, increased expression of stem cell marker Lrig1 has been reported in sebaceous carcinoma-like tumors of K14ΔNLef1 transgenic mice. In this study, we analyzed the Lrig1 expression in human sebaceous tumors. Methods Twenty-eight formalin-fixed paraffin-embedded sebaceous tumor specimens (7 sebaceous hyperplasias, 7 sebaceous adenomas, 10 sebaceomas and 4 sebaceous carcinomas) were stained with anti-Lrig1, anti-CD44v3 and anti-Ki67 antibody. Results Four (100%) sebaceous carcinomas, 8 (80%) sebaceomas, 3 (43%) sebaceous adenomas and no sebaceous hyperplasia showed Lrig1 overexpression. Discussion and Conclusion Lrig1 is a known tumor suppressor gene and is usually considered to be an indicator of poorly aggressive tumors. In human sebaceous tumors, the stronger Lrig1 staining in sebaceous carcinoma compared to other sebaceous tumors might be a feature of an advanced stage in tumorigenesis and a bad prognosis. In our study, 100% of sebaceous carcinomas revealed Lrig1 overexpression. We propose that Lrig1 may be used as a possible new marker of poorly differentiated sebaceous carcinoma.
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Affiliation(s)
- Jöri Pünchera
- Department of Dermatology, University Hospital of Geneva, Geneva, Switzerland
| | - Laurent Barnes
- Department of Dermatology, University Hospital of Geneva, Geneva, Switzerland
| | - Gürkan Kaya
- Department of Dermatology, University Hospital of Geneva, Geneva, Switzerland
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Cottle DL, Kretzschmar K, Gollnick HP, Quist SR. p53 activity contributes to defective interfollicular epidermal differentiation in hyperproliferative murine skin. Br J Dermatol 2016; 174:204-8. [PMID: 26212071 PMCID: PMC4832295 DOI: 10.1111/bjd.14048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- D L Cottle
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, U.K..
- Department of Biochemistry and Molecular Biology, Monash University, Clayton 3800, VIC, Australia.
| | - K Kretzschmar
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, U.K
- Centre for Stem Cell and Regenerative Medicine Research, King's College London, London SE1 9RT, U.K
| | - H P Gollnick
- Clinic of Dermatology and Venereology, Otto-von-Guericke University, DE-39120, Magdeburg, Germany
| | - S R Quist
- Clinic of Dermatology and Venereology, Otto-von-Guericke University, DE-39120, Magdeburg, Germany
- CR-UK Cambridge Research Institute, Li Ka Shing Centre, Cambridge CB2 0RE, U.K
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Kretzschmar K, Cottle DL, Schweiger PJ, Watt FM. The Androgen Receptor Antagonizes Wnt/β-Catenin Signaling in Epidermal Stem Cells. J Invest Dermatol 2015; 135:2753-2763. [PMID: 26121213 PMCID: PMC4641324 DOI: 10.1038/jid.2015.242] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/16/2015] [Accepted: 06/01/2015] [Indexed: 01/06/2023]
Abstract
Activation of Wnt/β-catenin signaling in adult mouse epidermis leads to expansion of the stem cell compartment and redirects keratinocytes in the interfollicular epidermis and sebaceous glands (SGs) to differentiate along the hair follicle (HF) lineages. Here we demonstrate that during epidermal development and homeostasis there is reciprocal activation of the androgen receptor (AR) and β-catenin in cells of the HF bulb. AR activation reduced β-catenin-dependent transcription, blocked β-catenin-induced induction of HF growth, and prevented β-catenin-mediated conversion of SGs into HFs. Conversely, AR inhibition enhanced the effects of β-catenin activation, promoting HF proliferation and differentiation, culminating in the formation of benign HF tumors and a complete loss of SG identity. We conclude that AR signaling has a key role in epidermal stem cell fate selection by modulating responses to β-catenin in adult mouse skin.
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Affiliation(s)
- Kai Kretzschmar
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital Campus, London, UK; Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Denny L Cottle
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK; Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
| | - Pawel J Schweiger
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK; Cancer Research UK Cambridge Research Institute, University of Cambridge, Cambridge, UK
| | - Fiona M Watt
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital Campus, London, UK.
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43
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Mulay K, Shah SJ, Aggarwal E, White VA, Honavar SG. Periocular sebaceous gland carcinoma: do androgen receptor (NR3C4) and nuclear survivin (BIRC5) have a prognostic significance? Acta Ophthalmol 2014; 92:e681-7. [PMID: 24930483 DOI: 10.1111/aos.12466] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 05/11/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE The study aimed at evaluating the expression of androgen receptor (AR) and nuclear survivin (NS) in periocular sebaceous gland carcinoma (SGC) and to determine whether this expression is associated with histopathological features, markers of apoptosis and proliferation and with clinical outcomes. METHODS This was a retrospective, comparative case series which included 56 patients with a biopsy-proven periocular SGC. Immunohistochemical staining for AR, survivin, p53 and Ki-67 was analysed in all cases. RESULTS All patients expressed AR, p53 and Ki-67 in the nucleus of tumour cells. Twenty-four patients (42.8%) had a high AR score, and 32 patients (57.2%) had a low AR score. Twenty-four (42.8%) patients expressed survivin in the nucleus of tumour cells. Nine (37.5%) had a high NS score, and 15 (62.5%) had a low NS score. Patients with a high AR score had a greater recurrence (p < 0.005), higher expression of Ki-67 (p < 0.0001) and a lower p53 expression (p < 0.005). Nuclear expression of survivin correlated with a high Ki-67 labelling index (0.0001) and low p53 expression (<0.005). Neither nuclear expression of survivin nor the NS score correlated with any clinicopathological features. CONCLUSION Expression of AR significantly impacts prognosis and is thus promising prognostic marker in periocular SGC.
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Affiliation(s)
- Kaustubh Mulay
- National Reporting Centre for Ophthalmic Pathology; Centre for Sight; Hyderabad India
- Ocular Pathology Service; L.V.Prasad Eye Institute; Hyderabad India
| | - Sneha J. Shah
- Department of Ophthalmic and Facial Plastic Surgery and Ocular Oncology; Centre for Sight; Hyderabad India
- Department of Ocular Oncology and Oculoplastics; L.V. Prasad Eye Institute; Hyderabad India
| | - Ekta Aggarwal
- Department of Ophthalmic Plastics; Vasan Eye Care Hospitals; Hyderabad India
| | - Valerie A. White
- Departments of Pathology and Laboratory Medicine and Ophthalmology and Visual Sciences; Vancouver General Hospital; University of British Columbia; Vancouver British Columbia Canada
| | - Santosh G. Honavar
- Department of Ophthalmic and Facial Plastic Surgery and Ocular Oncology; Centre for Sight; Hyderabad India
- Department of Ocular Oncology and Oculoplastics; L.V. Prasad Eye Institute; Hyderabad India
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44
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DiTommaso T, Cottle DL, Pearson HB, Schlüter H, Kaur P, Humbert PO, Smyth IM. Keratin 76 is required for tight junction function and maintenance of the skin barrier. PLoS Genet 2014; 10:e1004706. [PMID: 25340345 PMCID: PMC4207637 DOI: 10.1371/journal.pgen.1004706] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 08/26/2014] [Indexed: 11/18/2022] Open
Abstract
Keratins are cytoskeletal intermediate filament proteins that are increasingly being recognised for their diverse cellular functions. Here we report the consequences of germ line inactivation of Keratin 76 (Krt76) in mice. Homozygous disruption of this epidermally expressed gene causes neonatal skin flaking, hyperpigmentation, inflammation, impaired wound healing, and death prior to 12 weeks of age. We show that this phenotype is associated with functionally defective tight junctions that are characterised by mislocalization of the integral protein CLDN1. We further demonstrate that KRT76 interacts with CLDN1 and propose that this interaction is necessary to correctly position CLDN1 in tight junctions. The mislocalization of CLDN1 has been associated in various dermopathies, including the inflammatory disease, psoriasis. These observations establish a previously unknown connection between the intermediate filament cytoskeleton network and tight junctions and showcase Krt76 null mice as a possible model to study aberrant tight junction driven skin diseases.
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Affiliation(s)
- Tia DiTommaso
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Denny L. Cottle
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Helen B. Pearson
- Research Division, The Sir Peter MacCallum Cancer Centre, Melbourne, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Holger Schlüter
- Research Division, The Sir Peter MacCallum Cancer Centre, Melbourne, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Pritinder Kaur
- Research Division, The Sir Peter MacCallum Cancer Centre, Melbourne, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
- Department of Anatomy & Neuroscience, University of Melbourne, Melbourne, Australia
| | - Patrick O. Humbert
- Research Division, The Sir Peter MacCallum Cancer Centre, Melbourne, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
- Department of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, Australia
- Department of Pathology, University of Melbourne, Melbourne, Australia
| | - Ian M. Smyth
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
- Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
- * E-mail:
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45
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BLIMP1 is required for postnatal epidermal homeostasis but does not define a sebaceous gland progenitor under steady-state conditions. Stem Cell Reports 2014; 3:620-33. [PMID: 25358790 PMCID: PMC4223714 DOI: 10.1016/j.stemcr.2014.08.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 08/08/2014] [Accepted: 08/11/2014] [Indexed: 01/03/2023] Open
Abstract
B-lymphocyte-induced nuclear maturation protein 1 (BLIMP1) was previously reported to define a sebaceous gland (SG) progenitor population in the epidermis. However, the recent identification of multiple stem cell populations in the hair follicle junctional zone has led us to re-evaluate its function. We show, in agreement with previous studies, that BLIMP1 is expressed by postmitotic, terminally differentiated epidermal cells within the SG, interfollicular epidermis, and hair follicle. Epidermal overexpression of c-Myc results in loss of BLIMP1(+) cells, an effect modulated by androgen signaling. Epidermal-specific deletion of Blimp1 causes multiple differentiation defects in the epidermis in addition to SG enlargement. In culture, BLIMP1(+) sebocytes have no greater clonogenic potential than BLIMP1(-) sebocytes. Finally, lineage-tracing experiments reveal that, under steady-state conditions, BLIMP1-expressing cells do not divide. Thus, rather than defining a sebocyte progenitor population, BLIMP1 functions in terminally differentiated cells to maintain homeostasis in multiple epidermal compartments.
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46
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Cottle DL, Ursino GMA, Ip SCI, Jones LK, Ditommaso T, Hacking DF, Mangan NE, Mellett NA, Henley KJ, Sviridov D, Nold-Petry CA, Nold MF, Meikle PJ, Kile BT, Smyth IM. Fetal inhibition of inflammation improves disease phenotypes in harlequin ichthyosis. Hum Mol Genet 2014; 24:436-49. [PMID: 25209981 DOI: 10.1093/hmg/ddu459] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Harlequin ichthyosis (HI) is a severe skin disease which leads to neonatal death in ∼50% of cases. It is the result of mutations in ABCA12, a protein that transports lipids required to establish the protective skin barrier needed after birth. To better understand the life-threatening newborn HI phenotype, we analysed the developing epidermis for consequences of lipid dysregulation in mouse models. We observed a pro-inflammatory signature which was characterized by chemokine upregulation in embryonic skin which is distinct from that seen in other types of ichthyosis. Inflammation also persisted in grafted HI skin. To examine the contribution of inflammation to disease development, we overexpressed interleukin-37b to globally suppress fetal inflammation, observing considerable improvements in keratinocyte differentiation. These studies highlight inflammation as an unexpected contributor to HI disease development in utero, and suggest that inhibiting inflammation may reduce disease severity.
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Affiliation(s)
| | | | | | | | | | - Douglas F Hacking
- Department of Anaesthetics, Saint Vincent's Hospital Melbourne, 41 Victoria Parade, Fitzroy, VIC 3065, Australia Department of Paediatric Intensive Care, The Royal Children's Hospital, Melbourne, VIC, Australia
| | | | - Natalie A Mellett
- Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC 3004, Australia
| | - Katya J Henley
- Walter and Eliza Hall Institute, 1G Royal Parade, Parkville, VIC 3052, Australia
| | - Dmitri Sviridov
- Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC 3004, Australia
| | - Claudia A Nold-Petry
- The Ritchie Centre, MIMR-PHI Institute of Medical Research, 27-31 Wright Street, Clayton, VIC 3168, Australia
| | - Marcel F Nold
- The Ritchie Centre, MIMR-PHI Institute of Medical Research, 27-31 Wright Street, Clayton, VIC 3168, Australia
| | - Peter J Meikle
- Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC 3004, Australia
| | - Benjamin T Kile
- Walter and Eliza Hall Institute, 1G Royal Parade, Parkville, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia and
| | - Ian M Smyth
- Department of Biochemistry and Molecular Biology Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC 3800, Australia
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47
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Schepeler T, Page ME, Jensen KB. Heterogeneity and plasticity of epidermal stem cells. Development 2014; 141:2559-67. [PMID: 24961797 PMCID: PMC4067958 DOI: 10.1242/dev.104588] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The epidermis is an integral part of our largest organ, the skin, and protects us against the hostile environment. It is a highly dynamic tissue that, during normal steady-state conditions, undergoes constant turnover. Multiple stem cell populations residing in autonomously maintained compartments facilitate this task. In this Review, we discuss stem cell behaviour during normal tissue homeostasis, regeneration and disease within the pilosebaceous unit, an integral structure of the epidermis that is responsible for hair growth and lubrication of the epithelium. We provide an up-to-date view of the pilosebaceous unit, encompassing the heterogeneity and plasticity of multiple discrete stem cell populations that are strongly influenced by external cues to maintain their identity and function.
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Affiliation(s)
- Troels Schepeler
- BRIC - Biotech Research and Innovation Centre, University of Copenhagen, Ole Maaløes Vej 5, Copenhagen N DK-2200, Denmark
| | - Mahalia E Page
- Wellcome Trust & Medical Research Council Cambridge Stem Cell Institute, Tennis Court Road, Cambridge CB2 1QR, UK
| | - Kim B Jensen
- BRIC - Biotech Research and Innovation Centre, University of Copenhagen, Ole Maaløes Vej 5, Copenhagen N DK-2200, Denmark Wellcome Trust & Medical Research Council Cambridge Stem Cell Institute, Tennis Court Road, Cambridge CB2 1QR, UK
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48
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Kretzschmar K, Watt FM. Markers of epidermal stem cell subpopulations in adult mammalian skin. Cold Spring Harb Perspect Med 2014; 4:cshperspect.a013631. [PMID: 24993676 DOI: 10.1101/cshperspect.a013631] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The epidermis is the outermost layer of mammalian skin and comprises a multilayered epithelium, the interfollicular epidermis, with associated hair follicles, sebaceous glands, and eccrine sweat glands. As in other epithelia, adult stem cells within the epidermis maintain tissue homeostasis and contribute to repair of tissue damage. The bulge of hair follicles, where DNA-label-retaining cells reside, was traditionally regarded as the sole epidermal stem cell compartment. However, in recent years multiple stem cell populations have been identified. In this review, we discuss the different stem cell compartments of adult murine and human epidermis, the markers that they express, and the assays that are used to characterize epidermal stem cell properties.
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Affiliation(s)
- Kai Kretzschmar
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, United Kingdom Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
| | - Fiona M Watt
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
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49
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Kim J, Nakasaki M, Todorova D, Lake B, Yuan CY, Jamora C, Xu Y. p53 Induces skin aging by depleting Blimp1+ sebaceous gland cells. Cell Death Dis 2014; 5:e1141. [PMID: 24675459 PMCID: PMC3973209 DOI: 10.1038/cddis.2014.87] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 02/05/2014] [Accepted: 02/07/2014] [Indexed: 12/18/2022]
Abstract
p53 is an important inducer of organismal aging. However, its roles in the aging of skin remain unclear. Here we show that mice with chronic activation of p53 develop an aging phenotype in the skin associated with a reduction of subcutaneous fat and loss of sebaceous gland (SG). The reduction in the fat layer may result from the decrease of mammalian TOR complex 1 (mTORC1) activity accompanied by elevated expression of energy expenditure genes, and possibly as compensatory effects, leading to the elevation of peroxisome proliferator-activated receptor (PPAR)γ, an inducer of sebocyte differentiation. In addition, Blimp1(+) sebocytes become depleted concomitantly with an increase in cellular senescence, which can be reversed by PPARγ antagonist (BADGE) treatment. Therefore, our results indicate that p53-mediated aging of the skin involves not only thinning through the loss of subdermal fat, but also xerosis or drying of the skin through declining sebaceous gland activity.
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Affiliation(s)
- J Kim
- Division of Biological Sciences, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - M Nakasaki
- Section of Cell and Developmental Biology, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - D Todorova
- Division of Biological Sciences, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - B Lake
- Division of Biological Sciences, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - C-Y Yuan
- Division of Biological Sciences, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - C Jamora
- Section of Cell and Developmental Biology, University of California, 9500 Gilman Drive, La Jolla, CA, USA
| | - Y Xu
- Division of Biological Sciences, University of California, 9500 Gilman Drive, La Jolla, CA, USA
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50
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Rompolas P, Greco V. Stem cell dynamics in the hair follicle niche. Semin Cell Dev Biol 2013; 25-26:34-42. [PMID: 24361866 DOI: 10.1016/j.semcdb.2013.12.005] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/27/2013] [Accepted: 12/11/2013] [Indexed: 12/17/2022]
Abstract
Hair follicles are appendages of the mammalian skin that have the ability to periodically and stereotypically regenerate in order to continuously produce new hair over our lifetime. The ability of the hair follicle to regenerate is due to the presence of stem cells that along with other cell populations and non-cellular components, including molecular signals and extracellular material, make up a niche microenvironment. Mounting evidence suggests that the niche is critical for regulating stem cell behavior and thus the process of regeneration. Here, we review the literature concerning past and current studies that have utilized mouse genetic models, combined with other approaches to dissect the molecular and cellular composition of the hair follicle niche. We also discuss our current understanding of how stem cells operate within the niche during the process of tissue regeneration and the factors that regulate their behavior.
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Affiliation(s)
- Panteleimon Rompolas
- Department of Genetics, Department of Dermatology, Yale Stem Cell Center, Yale Cancer Center, Yale School of Medicine, New Haven, CT 06510, USA.
| | - Valentina Greco
- Department of Genetics, Department of Dermatology, Yale Stem Cell Center, Yale Cancer Center, Yale School of Medicine, New Haven, CT 06510, USA.
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