1
|
Xu L, Bajorski P, Poligone B. Lysophosphatidic acid down-regulates human RIPK4 mRNA in keratinocyte- derived cell lines. PLoS One 2024; 19:e0287444. [PMID: 38630705 PMCID: PMC11023271 DOI: 10.1371/journal.pone.0287444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 06/06/2023] [Indexed: 04/19/2024] Open
Abstract
The tight control of proliferating keratinocytes is vital to the successful function of the skin. Differentiation of dividing cells is necessary to form a skin barrier. The same dividing cells are necessary to heal wounds and when malignant form tumors. RIPK4, a serine-threonine kinase, plays critical roles in these processes. Its loss of function was associated with pathological keratinocyte proliferation and development of squamous cell carcinoma (SCC) in humans and mice. The current study extends previous findings in the importance of RIPK4 in keratinocyte proliferation. A serum-derived phospholipid, lysophosphatidic acid (LPA), was identified as an important biologic inhibitor of RIPK4. LPA functions by inhibiting the transcription of RIPK4 mRNA. LPA treatment led to increased keratinocyte proliferation, and this was compromised in cells with reduced RIPK4 expression. The current study may help to explain the mechanism by which RIPK4 was downregulated during SCC progression and provide insights on RIPK4 functions. It may also allow for targeting of RIPK4 through a natural component of serum.
Collapse
Affiliation(s)
- Lei Xu
- Rochester General Hospital Research Institute, Cancer Biology Research, Rochester, New York, United States of America
| | - Peter Bajorski
- School of Mathematical Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Brian Poligone
- Rochester General Hospital Research Institute, Cancer Biology Research, Rochester, New York, United States of America
| |
Collapse
|
2
|
Urwyler-Rösselet C, Tanghe G, Devos M, Hulpiau P, Saeys Y, Declercq W. Functions of the RIP kinase family members in the skin. Cell Mol Life Sci 2023; 80:285. [PMID: 37688617 PMCID: PMC10492769 DOI: 10.1007/s00018-023-04917-2] [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: 05/02/2022] [Revised: 07/08/2023] [Accepted: 08/08/2023] [Indexed: 09/11/2023]
Abstract
The receptor interacting protein kinases (RIPK) are a family of serine/threonine kinases that are involved in the integration of various stress signals. In response to several extracellular and/or intracellular stimuli, RIP kinases engage signaling cascades leading to the activation of NF-κB and mitogen-activated protein kinases, cell death, inflammation, differentiation and Wnt signaling and can have kinase-dependent and kinase-independent functions. Although it was previously suggested that seven RIPKs are part of the RIPK family, phylogenetic analysis indicates that there are only five genuine RIPKs. RIPK1 and RIPK3 are mainly involved in controlling and executing necroptosis in keratinocytes, while RIPK4 controls proliferation and differentiation of keratinocytes and thereby can act as a tumor suppressor in skin. Therefore, in this review we summarize and discuss the functions of RIPKs in skin homeostasis as well as the signaling pathways involved.
Collapse
Affiliation(s)
- Corinne Urwyler-Rösselet
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, 8093, Zurich, Switzerland
| | - Giel Tanghe
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Michael Devos
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Paco Hulpiau
- VIB Center for Inflammation Research, Ghent, Belgium
- Howest University of Applied Sciences, Brugge, Belgium
| | - Yvan Saeys
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics and Computer Science, Ghent University, Ghent, Belgium
| | - Wim Declercq
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- VIB Center for Inflammation Research, Ghent, Belgium.
| |
Collapse
|
3
|
Anthwal N, Urban DJ, Sadier A, Takenaka R, Spiro S, Simmons N, Behringer RR, Cretekos CJ, Rasweiler JJ, Sears KE. Insights into the formation and diversification of a novel chiropteran wing membrane from embryonic development. BMC Biol 2023; 21:101. [PMID: 37143038 PMCID: PMC10161559 DOI: 10.1186/s12915-023-01598-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 04/13/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND Through the evolution of novel wing structures, bats (Order Chiroptera) became the only mammalian group to achieve powered flight. This achievement preceded the massive adaptive radiation of bats into diverse ecological niches. We investigate some of the developmental processes that underlie the origin and subsequent diversification of one of the novel membranes of the bat wing: the plagiopatagium, which connects the fore- and hind limb in all bat species. RESULTS Our results suggest that the plagiopatagium initially arises through novel outgrowths from the body flank that subsequently merge with the limbs to generate the wing airfoil. Our findings further suggest that this merging process, which is highly conserved across bats, occurs through modulation of the programs controlling the development of the periderm of the epidermal epithelium. Finally, our results suggest that the shape of the plagiopatagium begins to diversify in bats only after this merging has occurred. CONCLUSIONS This study demonstrates how focusing on the evolution of cellular processes can inform an understanding of the developmental factors shaping the evolution of novel, highly adaptive structures.
Collapse
Affiliation(s)
- Neal Anthwal
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
| | - Daniel J Urban
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, USA
- Department of Mammalogy, Division of Vertebrate Biology, American Museum of Natural History, New York, USA
| | - Alexa Sadier
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA
- Department of Molecular, Cell, and Developmental Biology, UCLA, Los Angeles, USA
| | - Risa Takenaka
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA
| | | | - Nancy Simmons
- Department of Mammalogy, Division of Vertebrate Biology, American Museum of Natural History, New York, USA
| | - Richard R Behringer
- Department of Genetics, University of Texas MD Anderson Cancer Center, Houston, USA
| | | | - John J Rasweiler
- Department of Obstetrics and Gynecology, State University of New York Downstate Medical Center, New York, USA
| | - Karen E Sears
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA.
- Department of Molecular, Cell, and Developmental Biology, UCLA, Los Angeles, USA.
| |
Collapse
|
4
|
Vemurafenib and Dabrafenib Downregulates RIPK4 Level. Cancers (Basel) 2023; 15:cancers15030918. [PMID: 36765875 PMCID: PMC9913565 DOI: 10.3390/cancers15030918] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/27/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Vemurafenib and dabrafenib are BRAF kinase inhibitors (BRAFi) used for the treatment of patients with melanoma carrying the V600E BRAF mutation. However, melanoma cells develop resistance to both drugs when used as monotherapy. Therefore, mechanisms of drug resistance are investigated, and new molecular targets are sought that could completely inhibit melanoma progression. Since receptor-interacting protein kinase (RIPK4) probably functions as an oncogene in melanoma and its structure is similar to the BRAF protein, we analyzed the impact of vemurafenib and dabrafenib on RIPK4 in melanomas. The in silico study confirmed the high similarity of BRAF kinase domains to the RIPK4 protein at both the sequence and structural levels and suggests that BRAFi could directly bind to RIPK4 even more strongly than to ATP. Furthermore, BRAFi inhibited ERK1/2 activity and lowered RIPK4 protein levels in BRAF-mutated melanoma cells (A375 and WM266.4), while in wild-type BRAF cells (BLM and LoVo), both inhibitors decreased the level of RIPK4 and enhanced ERK1/2 activity. The phosphorylation of phosphatidylethanolamine binding protein 1 (PEBP1)-a suppressor of the BRAF/MEK/ERK pathway-via RIPK4 observed in pancreatic cancer did not occur in melanoma. Neither downregulation nor upregulation of RIPK4 in BRAF- mutated cells affected PEBP1 levels or the BRAF/MEK/ERK pathway. The downregulation of RIPK4 inhibited cell proliferation and the FAK/AKT pathway, and increased BRAFi efficiency in WM266.4 cells. However, the silencing of RIPK4 did not induce apoptosis or necroptosis. Our study suggests that RIPK4 may be an off-target for BRAF inhibitors.
Collapse
|
5
|
Brennan K, Zheng H, Fahrner JA, Shin JH, Gentles AJ, Schaefer B, Sunwoo JB, Bernstein JA, Gevaert O. NSD1 mutations deregulate transcription and DNA methylation of bivalent developmental genes in Sotos syndrome. Hum Mol Genet 2022; 31:2164-2184. [PMID: 35094088 PMCID: PMC9262396 DOI: 10.1093/hmg/ddac026] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/04/2022] [Accepted: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
Sotos syndrome (SS), the most common overgrowth with intellectual disability (OGID) disorder, is caused by inactivating germline mutations of NSD1, which encodes a histone H3 lysine 36 methyltransferase. To understand how NSD1 inactivation deregulates transcription and DNA methylation (DNAm), and to explore how these abnormalities affect human development, we profiled transcription and DNAm in SS patients and healthy control individuals. We identified a transcriptional signature that distinguishes individuals with SS from controls and was also deregulated in NSD1-mutated cancers. Most abnormally expressed genes displayed reduced expression in SS; these downregulated genes consisted mostly of bivalent genes and were enriched for regulators of development and neural synapse function. DNA hypomethylation was strongly enriched within promoters of transcriptionally deregulated genes: overexpressed genes displayed hypomethylation at their transcription start sites while underexpressed genes featured hypomethylation at polycomb binding sites within their promoter CpG island shores. SS patients featured accelerated molecular aging at the levels of both transcription and DNAm. Overall, these findings indicate that NSD1-deposited H3K36 methylation regulates transcription by directing promoter DNA methylation, partially by repressing polycomb repressive complex 2 (PRC2) activity. These findings could explain the phenotypic similarity of SS to OGID disorders that are caused by mutations in PRC2 complex-encoding genes.
Collapse
Affiliation(s)
- Kevin Brennan
- Stanford Center for Biomedical Informatics Research, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Hong Zheng
- Stanford Center for Biomedical Informatics Research, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Jill A Fahrner
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - June Ho Shin
- Department of Otolaryngology – Head and Neck Surgery, Stanford University School of Medicine, Palo Alto, CA 94305, USA
| | - Andrew J Gentles
- Stanford Center for Biomedical Informatics Research, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Bradley Schaefer
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - John B Sunwoo
- Department of Otolaryngology – Head and Neck Surgery, Stanford University School of Medicine, Palo Alto, CA 94305, USA
| | - Jonathan A Bernstein
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Olivier Gevaert
- Stanford Center for Biomedical Informatics Research, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| |
Collapse
|
6
|
Hammond NL, Dixon MJ. Revisiting the embryogenesis of lip and palate development. Oral Dis 2022; 28:1306-1326. [PMID: 35226783 PMCID: PMC10234451 DOI: 10.1111/odi.14174] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/17/2022] [Accepted: 02/23/2022] [Indexed: 12/13/2022]
Abstract
Clefts of the lip and palate (CLP), the major causes of congenital facial malformation globally, result from failure of fusion of the facial processes during embryogenesis. With a prevalence of 1 in 500-2500 live births, CLP causes major morbidity throughout life as a result of problems with facial appearance, feeding, speaking, obstructive apnoea, hearing and social adjustment and requires complex, multi-disciplinary care at considerable cost to healthcare systems worldwide. Long-term outcomes for affected individuals include increased mortality compared with their unaffected siblings. The frequent occurrence and major healthcare burden imposed by CLP highlight the importance of dissecting the molecular mechanisms driving facial development. Identification of the genetic mutations underlying syndromic forms of CLP, where CLP occurs in association with non-cleft clinical features, allied to developmental studies using appropriate animal models is central to our understanding of the molecular events underlying development of the lip and palate and, ultimately, how these are disturbed in CLP.
Collapse
Affiliation(s)
- Nigel L. Hammond
- Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Michael J. Dixon
- Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| |
Collapse
|
7
|
Fortugno P, Monetta R, Belli M, Botti E, Angelucci F, Palmerini MG, Annarita NS, De Luca C, Ceccarini M, Salvatore M, Bianchi L, Macioce P, Teson M, Ricci F, Network IUD, Macchiarelli G, Didona B, Costanzo A, Castiglia D, Brancati F. RIPK4 regulates cell–cell adhesion in epidermal development and homeostasis. Hum Mol Genet 2022; 31:2535-2547. [DOI: 10.1093/hmg/ddac046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/01/2022] [Accepted: 02/22/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Epidermal development and maintenance are finely regulated events requiring a strict balance between proliferation and differentiation. Alterations in these processes give rise to human disorders such as cancer or syndromes with skin and annexes defects, known as ectodermal dysplasias (EDs). Here, we studied the functional effects of two novel receptor-interacting protein kinase 4 (RIPK4) missense mutations identified in siblings with an autosomal recessive ED with cutaneous syndactyly, palmoplantar hyperkeratosis and orofacial synechiae. Clinical overlap with distinct EDs caused by mutations in transcription factors (i.e. p63 and interferon regulatory factor 6, IRF6) or nectin adhesion molecules was noticed. Impaired activity of the RIPK4 kinase resulted both in altered epithelial differentiation and defective cell adhesion. We showed that mutant RIPK4 resulted in loss of PVRL4/nectin-4 expression in patient epidermis and primary keratinocytes, and demonstrated that PVRL4 is transcriptionally regulated by IRF6, a RIPK4 phosphorylation target. In addition, defective RIPK4 altered desmosome morphology through modulation of plakophilin-1 and desmoplakin. In conclusion, this work implicates RIPK4 kinase function in the p63-IRF6 regulatory loop that controls the proliferation/differentiation switch and cell adhesion, with implications in ectodermal development and cancer.
Collapse
Affiliation(s)
- Paola Fortugno
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Human Functional Genomics, IRCCS San Raffaele Roma, 00163 Rome, Italy
| | - Rosanna Monetta
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | | | - Elisabetta Botti
- Dermatology Unit, Department of Systems Medicine, Tor Vergata University of Rome, 00133 Rome, Italy
| | - Francesco Angelucci
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Maria Grazia Palmerini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Nottola Stefania Annarita
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, 00185 Rome, Italy
| | - Chiara De Luca
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Marina Ceccarini
- National Center Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Marco Salvatore
- National Center Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Luca Bianchi
- Dermatology Unit, Department of Systems Medicine, Tor Vergata University of Rome, 00133 Rome, Italy
| | - Pompeo Macioce
- Department of Neurosciences & Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Massimo Teson
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Francesco Ricci
- Department of Dermatology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | | | - Guido Macchiarelli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Biagio Didona
- Rare Skin Disease Center, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Antonio Costanzo
- Department of Biomedical Sciences, Humanitas University, 20090 Pieve Emanuele, Milan, Italy
- Skin Pathology Laboratory, IRCCS Humanitas Research Hospital, 20089 Rozzano, Milan, Italy
| | - Daniele Castiglia
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Francesco Brancati
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Human Functional Genomics, IRCCS San Raffaele Roma, 00163 Rome, Italy
| |
Collapse
|
8
|
Xu J, Wu D, Zhang B, Pan C, Guo Y, Wei Q. Depletion of RIPK4 parallels higher malignancy potential in cutaneous squamous cell carcinoma. PeerJ 2022; 10:e12932. [PMID: 35186499 PMCID: PMC8841032 DOI: 10.7717/peerj.12932] [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: 09/08/2021] [Accepted: 01/23/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The RIPK4 (receptor-interacting protein kinase 4), a member of the RIPK family, acts as an important regulator of epidermal differentiation, cutaneous inflammation, and cutaneous wound repair. However, Until now, the role of RIPK4 in tumorigenesis remains elusive. There have been no studies exploring the effects of RIPK4 on the signaling pathway in cutaneous squamous cell carcinoma (SCC). It remains unknown whether RIPK4 expression, which can affect the degree of epidermal differentiation can also influence the radiosensitivity of skin SCC. It is urgent to fully elucidate the biological mechanism by which RIPK4 promotes carcinogenesis in skin SCC and determine whether RIPK4 expression levels predicts the sensitivity to radiotherapy in skin SCC. METHODS Human skin SCC cell line, A431, was transfected with either small interfering RNAs (siRNAs) targeting RIPK4 (siR-RIPK4) or negative control siRNA (siR-NC). Western blotting was used to detect the expression of RIPK4 and Raf/MEK/ERK pathway-related proteins. The cells were irradiated using an X-ray irradiator at 6 MV with different radiation doses (0, 2, 6, and 10 Gy). Cell proliferation analysis, colony formation assay, transwell cell migration and invasion assay, cell cycle and apoptosis analysis were conducted to investigate the effect of RIPK4 silencing on skin SCC malignancy and radiosensitivity. RESULTS RIPK4 protein expression was significantly decreased in the A431 cells transfected with siR-RIPK4, compared with the A431 cells transfected with siR-NC. RIPK4 silencing facilitated the proliferation, colony formation, migration, and invasion ability of A431 cell line, while cell cycle progression or cell apoptosis were not significantly influenced. In contrast with the previous literature, Raf/MEK/ERK pathway was not effected by RIPK4 knockdown in skin SCC. RIPK4 knockdown could not reverse the radiation resistance of A431 cells to irradiation in vitro. CONCLUSIONS In general, although depletion of RIPK4 cannot reverse the radiation resistance of A431 cells in vitro, it parallels higher malignancy potential in cutaneous SCC. To our knowledge, this is the first report of the effects of RIPK4 expression on the Raf/MEK/ERK signaling pathway and radiosensitivity in cutaneous SCC. The better understanding of the molecular mechanism of RIPK4 in cutaneous SCC may provide a promising biomarker for skin SCC prognosis and treatment.
Collapse
Affiliation(s)
- Jing Xu
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Dongping Wu
- Department of Radiation Oncology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, China
| | - Bicheng Zhang
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Chi Pan
- Department of Breast Surgey, The Second Affiliated Hospital, Zhejiang University, College of Medicine, Hangzhou, China
| | - Yinglu Guo
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Qichun Wei
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
9
|
Shen Y, Boulton APR, Yellon RL, Cook MC. Skin manifestations of inborn errors of NF-κB. Front Pediatr 2022; 10:1098426. [PMID: 36733767 PMCID: PMC9888762 DOI: 10.3389/fped.2022.1098426] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/23/2022] [Indexed: 01/18/2023] Open
Abstract
More than 400 single gene defects have been identified as inborn errors of immunity, including many arising from genes encoding proteins that affect NF-κB activity. We summarise the skin phenotypes in this subset of disorders and provide an overview of pathogenic mechanisms. NF-κB acts cell-intrinsically in basal epithelial cells during differentiation of skin appendages, influences keratinocyte proliferation and survival, and both responses to and amplification of inflammation, particularly TNF. Skin phenotypes include ectodermal dysplasia, reduction and hyperproliferation of keratinocytes, and aberrant recruitment of inflammatory cells, which often occur in combination. Phenotypes conferred by these rare monogenic syndromes often resemble those observed with more common defects. This includes oral and perineal ulceration and pustular skin disease as occurs with Behcet's disease, hyperkeratosis with microabscess formation similar to psoriasis, and atopic dermatitis. Thus, these genotype-phenotype relations provide diagnostic clues for this subset of IEIs, and also provide insights into mechanisms of more common forms of skin disease.
Collapse
Affiliation(s)
- Yitong Shen
- Department of Immunology, Cambridge University Hospitals, Cambridge, United Kingdom
| | - Anne P R Boulton
- Department of Immunology, Cambridge University Hospitals, Cambridge, United Kingdom
| | - Robert L Yellon
- Department of Immunology, Cambridge University Hospitals, Cambridge, United Kingdom
| | - Matthew C Cook
- Department of Immunology, Cambridge University Hospitals, Cambridge, United Kingdom.,Centre for Personalised Immunology, Australian National University, Canberra, Australia.,Cambridge Institute of Therapeutic Immunology and Infectious Disease, and Department of Medicine, University of Cambridge, United Kingdom
| |
Collapse
|
10
|
Mouse models in palate development and orofacial cleft research: Understanding the crucial role and regulation of epithelial integrity in facial and palate morphogenesis. Curr Top Dev Biol 2022; 148:13-50. [PMID: 35461563 PMCID: PMC9060390 DOI: 10.1016/bs.ctdb.2021.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cleft lip and cleft palate are common birth defects resulting from genetic and/or environmental perturbations of facial development in utero. Facial morphogenesis commences during early embryogenesis, with cranial neural crest cells interacting with the surface ectoderm to form initially partly separate facial primordia consisting of the medial and lateral nasal prominences, and paired maxillary and mandibular processes. As these facial primordia grow around the primitive oral cavity and merge toward the ventral midline, the surface ectoderm undergoes a critical differentiation step to form an outer layer of flattened and tightly connected periderm cells with a non-stick apical surface that prevents epithelial adhesion. Formation of the upper lip and palate requires spatiotemporally regulated inter-epithelial adhesions and subsequent dissolution of the intervening epithelial seam between the maxillary and medial/lateral nasal processes and between the palatal shelves. Proper regulation of epithelial integrity plays a paramount role during human facial development, as mutations in genes encoding epithelial adhesion molecules and their regulators have been associated with syndromic and non-syndromic orofacial clefts. In this chapter, we summarize mouse genetic studies that have been instrumental in unraveling the mechanisms regulating epithelial integrity and periderm differentiation during facial and palate development. Since proper epithelial integrity also plays crucial roles in wound healing and cancer, understanding the mechanisms regulating epithelial integrity during facial development have direct implications for improvement in clinical care of craniofacial patients.
Collapse
|
11
|
Madej E, Ryszawy D, Brożyna AA, Czyz M, Czyz J, Wolnicka-Glubisz A. Deciphering the Functional Role of RIPK4 in Melanoma. Int J Mol Sci 2021; 22:ijms222111504. [PMID: 34768934 PMCID: PMC8583870 DOI: 10.3390/ijms222111504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 11/17/2022] Open
Abstract
The receptor-interacting protein kinase 4 (RIPK4) plays an important role in the development and maintenance of various tissues including skin, but its role in melanoma has not been reported. Using patient-derived cell lines and clinical samples, we show that RIPK4 is expressed in melanomas at different levels. This heterogenous expression, together with very low level of RIPK4 in melanocytes, indicates that the role of this kinase in melanoma is context-dependent. While the analysis of microarray data has revealed no straightforward correlation between the stage of melanoma progression and RIPK4 expression in vivo, relatively high levels of RIPK4 are in metastatic melanoma cell lines. RIPK4 down-regulation by siRNA resulted in the attenuation of invasive potential as assessed by time-lapse video microscopy, wound-healing and transmigration assays. These effects were accompanied by reduced level of pro-invasive proteins such as MMP9, MMP2, and N-cadherin. Incubation of melanoma cells with phorbol ester (PMA) increased PKC-1β level and hyperphosphorylation of RIPK4 resulting in degradation of RIPK4. Interestingly, incubation of cells with PMA for short and long durations revealed that cell migration is controlled by the NF-κB signaling in a RIPK4-dependent (RIPK4high) or independent (RIPK4low) manner depending on cell origin (distant or lymph node metastasis) or phenotype (mesenchymal or epithelial).
Collapse
Affiliation(s)
- Ewelina Madej
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Biophysics, Jagiellonian University, 7 Gronostajowa Street, 30-387 Krakow, Poland;
| | - Damian Ryszawy
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, 7 Gronostajowa Street, 30-387 Krakow, Poland; (D.R.); (J.C.)
| | - Anna A. Brożyna
- Faculty of Biological and Veterinary Sciences, Institute of Biology, Department of Human Biology, Nicolaus Copernicus University, 1 Lwowska Street, 87-100 Torun, Poland;
| | - Malgorzata Czyz
- Department of Molecular Biology of Cancer Lodz, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215 Lodz, Poland;
| | - Jaroslaw Czyz
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, 7 Gronostajowa Street, 30-387 Krakow, Poland; (D.R.); (J.C.)
| | - Agnieszka Wolnicka-Glubisz
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Biophysics, Jagiellonian University, 7 Gronostajowa Street, 30-387 Krakow, Poland;
- Correspondence: ; Tel.: +48-12-664-65-26; Fax: +48-12-664-69
| |
Collapse
|
12
|
Zinatizadeh MR, Schock B, Chalbatani GM, Zarandi PK, Jalali SA, Miri SR. The Nuclear Factor Kappa B (NF-kB) signaling in cancer development and immune diseases. Genes Dis 2021; 8:287-297. [PMID: 33997176 PMCID: PMC8093649 DOI: 10.1016/j.gendis.2020.06.005] [Citation(s) in RCA: 202] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 05/26/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023] Open
Abstract
The nuclear factor kappa B (NF-kB) family of transcription factors plays an essential role as stressors in the cellular environment, and controls the expression of important regulatory genes such as immunity, inflammation, death, and cell proliferation. NF-kB protein is located in the cytoplasm, and can be activated by various cellular stimuli. There are two pathways for NF-kB activation, as the canonical and non-canonical pathways, which require complex molecular interactions with adapter proteins and phosphorylation and ubiquitinase enzymes. Accordingly, this increases NF-kB translocation in the nucleus and regulates gene expression. In this study, the concepts that emerge in different cellular systems allow the design of NF-kB function in humans. This would not only allow the development for rare diseases associated with NF-kB, but would also be used as a source of useful information to eliminate widespread consequences such as cancer or inflammatory/immune diseases.
Collapse
Affiliation(s)
| | - Bettina Schock
- Centre for Experimental Medicine, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom
| | - Ghanbar Mahmoodi Chalbatani
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, 1336616357, Iran
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, 1336616357, Iran
| | | | - Seyed Amir Jalali
- Department of Medical Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 1336616357, Iran
| | - Seyed Rouhollah Miri
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Science, Tehran, 1336616357, Iran
| |
Collapse
|
13
|
Dinçer T, Gümüş E, Toraman B, Er İ, Yildiz G, Yüksel Z, Kalay E. A novel homozygous RIPK4 variant in a family with severe Bartsocas-Papas syndrome. Am J Med Genet A 2021; 185:1691-1699. [PMID: 33713555 DOI: 10.1002/ajmg.a.62154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/29/2021] [Accepted: 02/20/2021] [Indexed: 01/04/2023]
Abstract
Bartsocas-Papas syndrome (BPS) is a rare autosomal recessive disorder characterized by popliteal pterygia, syndactyly, ankyloblepharon, filiform bands between the jaws, cleft lip and palate, and genital malformations. Most of the BPS cases reported to date are fatal either in the prenatal or neonatal period. Causative genetic defects of BPS were mapped on the RIPK4 gene encoding receptor-interacting serine/threonine kinase 4, which is critical for epidermal differentiation and development. RIPK4 variants are associated with a wide range of clinical features ranging from milder ectodermal dysplasia to severe BPS. Here, we evaluated a consanguineous Turkish family, who had two pregnancies with severe multiple malformations compatible with BPS phenotype. In order to identify the underlying genetic defect, direct sequencing of the coding region and exon-intron boundaries of RIPK4 was carried out. A homozygous transversion (c.481G>C) that leads to the substitution of a conserved aspartic acid to histidine (p.Asp161His) in the kinase domain of the protein was detected. Pathogenicity predictions, molecular modeling, and cell-based functional assays showed that Asp161 residue is required for the kinase activity of the protein, which indicates that the identified variant is responsible for the severe BPS phenotype in the family.
Collapse
Affiliation(s)
- Tuba Dinçer
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Evren Gümüş
- Department of Medical Genetics, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Bayram Toraman
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - İdris Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, Trabzon, Turkey
| | - Gokhan Yildiz
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Zafer Yüksel
- Department of Human Genetics, Bioscientia GmbH, Ingelheim, Germany
| | - Ersan Kalay
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| |
Collapse
|
14
|
Nasreddine G, El Hajj J, Ghassibe-Sabbagh M. Orofacial clefts embryology, classification, epidemiology, and genetics. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2021; 787:108373. [PMID: 34083042 DOI: 10.1016/j.mrrev.2021.108373] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/21/2021] [Accepted: 02/23/2021] [Indexed: 01/14/2023]
Abstract
Orofacial clefts (OFCs) rank as the second most common congenital birth defect in the United States after Down syndrome and are the most common head and neck congenital malformations. They are classified as cleft lip with or without cleft palate (CL/P) and cleft palate only (CPO). OFCs have significant psychological and socio-economic impact on patients and their families and require a multidisciplinary approach for management and counseling. A complex interaction between genetic and environmental factors contributes to the incidence and clinical presentation of OFCs. In this comprehensive review, the embryology, classification, epidemiology and etiology of clefts are thoroughly discussed and a "state-of-the-art" snapshot of the recent advances in the genetics of OFCs is presented.
Collapse
Affiliation(s)
- Ghenwa Nasreddine
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, P.O. Box: 13-5053, Chouran, 1102 2801, Beirut, Lebanon.
| | - Joelle El Hajj
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, P.O. Box: 13-5053, Chouran, 1102 2801, Beirut, Lebanon.
| | - Michella Ghassibe-Sabbagh
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, P.O. Box: 13-5053, Chouran, 1102 2801, Beirut, Lebanon.
| |
Collapse
|
15
|
Josh F, Soekamto TH, Marzoeki D, Faruk M. Bartsocas-Papas syndrome: The first case report of severe autosomal recessive form from Indonesia. Int J Surg Case Rep 2021; 79:436-439. [PMID: 33529824 PMCID: PMC7851448 DOI: 10.1016/j.ijscr.2021.01.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/15/2021] [Accepted: 01/15/2021] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Bartsocas-Papas syndrome (BPS) is an autosomal recessive form of Popliteal Pterygium syndrome (PPS). It is a very rare disease characterized by congenital craniofacial anomalies, popliteal webbing, and genitourinary and musculoskeletal anomalies. Almost all of the cases were reported in dead intrauterine pregnancies. PRESENTATION OF CASE We present a 10-month-old boy with bilateral complete cleft lip and palate, abnormal scalp hair, an absence of both upper eyelids, choanal atresia, syndactyly of the third and fourth fingers of the right hand, agenesis fingers on the left hand, bilateral popliteal pterygia, bilateral talipes equinovarus, agenesis of the toes of both lower extremities, intercrural webbing, an absence of testis, and scrotal anomaly. Multistage surgical correction was performed for the multiple congenital malformations. CONCLUSION We report the first case of BPS from Indonesia. Gradual management should be performed according to the patient's age and available facilities.
Collapse
Affiliation(s)
- Fonny Josh
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia; Division of Plastic and Reconstructive Surgery, Department of Surgery, Dr Wahidin Sudirohusodo Hospital, Makassar, Indonesia.
| | | | - Djohansjah Marzoeki
- Department of Plastic and Reconstructive Surgery, School of Medicine, Airlangga University, Dr. Soetomo Hospital, Surabaya, Indonesia.
| | - Muhammad Faruk
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia.
| |
Collapse
|
16
|
Yin JL, Wu Y, Yuan ZW, Gao XH, Chen HD. Advances in scarless foetal wound healing and prospects for scar reduction in adults. Cell Prolif 2020; 53:e12916. [PMID: 33058377 PMCID: PMC7653265 DOI: 10.1111/cpr.12916] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/25/2020] [Accepted: 09/06/2020] [Indexed: 02/06/2023] Open
Abstract
Healing after mammalian skin injury involves the interaction between numerous cellular constituents and regulatory factors, which together form three overlapping phases: an inflammatory response, a proliferation phase and a remodelling phase. Any slight variation in these three stages can substantially alter the healing process and resultant production of scars. Of particular significance are the mechanisms responsible for the scar‐free phenomenon observed in the foetus. Uncovering such mechanisms would offer great expectations in the treatment of scars and therefore represents an important area of investigation. In this review, we provide a comprehensive summary of studies on injury‐induced skin regeneration within the foetus. The information contained in these studies provides an opportunity for new insights into the treatment of clinical scars based on the cellular and molecular processes involved.
Collapse
Affiliation(s)
- Jia-Li Yin
- Key Laboratory of Immunodermatology, Ministry of Education, Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,National and Local Joint Engineering Research Center of Immunodermatological Theranostics, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yan Wu
- Key Laboratory of Immunodermatology, Ministry of Education, Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,National and Local Joint Engineering Research Center of Immunodermatological Theranostics, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zheng-Wei Yuan
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Xing-Hua Gao
- Key Laboratory of Immunodermatology, Ministry of Education, Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,National and Local Joint Engineering Research Center of Immunodermatological Theranostics, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Hong-Duo Chen
- Key Laboratory of Immunodermatology, Ministry of Education, Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,National and Local Joint Engineering Research Center of Immunodermatological Theranostics, The First Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
17
|
Xu J, Wei Q, He Z. Insight Into the Function of RIPK4 in Keratinocyte Differentiation and Carcinogenesis. Front Oncol 2020; 10:1562. [PMID: 32923402 PMCID: PMC7457045 DOI: 10.3389/fonc.2020.01562] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 07/20/2020] [Indexed: 12/22/2022] Open
Abstract
The receptor-interacting protein kinase 4 (RIPK4), a member of the RIPK family, was originally described as an interaction partner of protein kinase C (PKC) β and PKCδ. RIPK4 is identified as a key regulator of keratinocyte differentiation, cutaneous inflammation, and cutaneous wound repair. The mechanism by which RIPK4 integrates upstream signals to initiate specific responses remains elusive. Previous studies have indicated that RIPK4 can regulate several signaling pathways, including the NF-κB, Wnt/β-catenin, and RAF/MEK/ERK pathways. Furthermore, RIPK4-related biological signaling pathways interact with each other to form a complex network. Mounting evidence suggests that RIPK4 is aberrantly expressed in various kinds of cancers. In several types of squamous cell carcinoma (SCC), the mutations that drive aggressive SCC have been found in RIPK4. In addition, the function of RIPK4 in carcinogenesis is probably tissue-specific, since RIPK4 can play a dual role as both a tumor promoter and a tumor suppressor in different tumor types. Therefore, RIPK4 may represent as an independent prognostic factor and a promising novel therapeutic target, which can be used to identify the risks of patients and guide personalized treatments. In future, RIPK4-interacting pathways and precise molecular targets need to be investigated in order to further elucidate the mechanisms underlying epidermal differentiation and carcinogenesis.
Collapse
Affiliation(s)
- Jing Xu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qichun Wei
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhixing He
- Institute of Basic Research in Clinical Medicine, College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| |
Collapse
|
18
|
Cuny GD, Degterev A. RIPK protein kinase family: Atypical lives of typical kinases. Semin Cell Dev Biol 2020; 109:96-105. [PMID: 32732131 DOI: 10.1016/j.semcdb.2020.06.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 01/11/2023]
Abstract
Receptor Interacting Protein Kinases (RIPKs) are a family of Ser/Thr/Tyr kinases whose functions, regulation and pathophysiologic roles have remained an enigma for a long time. In recent years, these proteins garnered significant interest due to their roles in regulating a variety of host defense functions including control of inflammatory gene expression, different forms of cell death, and cutaneous and intestinal barrier functions. In addition, there is accumulating evidence that while these kinases seemingly follow typical kinase blueprints, their functioning in cells can take forms that are atypical for protein kinases. Lastly, while these kinases generally belong to distinct areas of innate immune regulation, there are emerging overarching themes that may unify the functions of this kinase family. Our review seeks to discuss the biology of RIPKs, and how typical and atypical features of this family informs the activity of a rapidly growing repertoire of RIPK inhibitors.
Collapse
Affiliation(s)
- Gregory D Cuny
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, USA.
| | - Alexei Degterev
- Department of Developmental, Molecular & Chemical Biology, Tufts University School of Medicine, Boston, MA, USA.
| |
Collapse
|
19
|
Deciphering the Molecular Landscape of Cutaneous Squamous Cell Carcinoma for Better Diagnosis and Treatment. J Clin Med 2020; 9:jcm9072228. [PMID: 32674318 PMCID: PMC7408826 DOI: 10.3390/jcm9072228] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is a common type of neoplasia, representing a terrible burden on patients' life and clinical management. Although it seldom metastasizes, and most cases can be effectively treated with surgical intervention, once metastatic cSCC displays considerable aggressiveness leading to the death of affected individuals. No consensus has been reached as to which features better characterize the aggressive behavior of cSCC, an achievement hindered by the high mutational burden caused by chronic ultraviolet light exposure. Even though some subtypes have been recognized as high risk variants, depending on certain tumor features, cSCC that are normally thought of as low risk could pose an increased danger to the patients. In light of this, specific genetic and epigenetic markers for cutaneous SCC, which could serve as reliable diagnostic markers and possible targets for novel treatment development, have been searched for. This review aims to give an overview of the mutational landscape of cSCC, pointing out established biomarkers, as well as novel candidates, and future possible molecular therapies for cSCC.
Collapse
|
20
|
Dinçer T, Boz Er AB, Er İ, Toraman B, Yildiz G, Kalay E. RIPK4 suppresses the TGF-β1 signaling pathway in HaCaT cells. Cell Biol Int 2019; 44:848-860. [PMID: 31825120 DOI: 10.1002/cbin.11282] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 12/06/2019] [Indexed: 12/15/2022]
Abstract
Receptor-interacting serine/threonine kinase 4 (RIPK4) and transforming growth factor-β 1 (TGF-β1) play critical roles in the development and maintenance of the epidermis. A negative correlation between the expression patterns of RIPK4 and TGF-β signaling during epidermal homeostasis-related events and suppression of RIPK4 expression by TGF-β1 in keratinocyte cell lines suggest the presence of a negative regulatory loop between the two factors. So far, RIPK4 has been shown to regulate nuclear factor-κB (NF-κB), protein kinase C (PKC), wingless-type MMTV integration site family (Wnt), and (mitogen-activated protein kinase) MAPK signaling pathways. In this study, we examined the effect of RIPK4 on the canonical Smad-mediated TGF-β1 signaling pathway by using the immortalized human keratinocyte HaCaT cell line. According to our results, RIPK4 inhibits intracellular Smad-mediated TGF-β1 signaling events through suppression of TGF-β1-induced Smad2/3 phosphorylation, which is reflected in the upcoming intracellular events including Smad2/3-Smad4 interaction, nuclear localization, and TGF-β1-induced gene expression. Moreover, the kinase activity of RIPK4 is required for this process. The in vitro wound-scratch assay demonstrated that RIPK4 suppressed TGF-β1-mediated wound healing through blocking TGF-β1-induced cell migration. In conclusion, our results showed the antagonistic effect of RIPK4 on TGF-β1 signaling in keratinocytes for the first time and have the potential to contribute to the understanding and treatment of skin diseases associated with aberrant TGF-β1 signaling.
Collapse
Affiliation(s)
- Tuba Dinçer
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Asiye Büşra Boz Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - İdris Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Bayram Toraman
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Gokhan Yildiz
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Ersan Kalay
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| |
Collapse
|
21
|
The RIPK4-IRF6 signalling axis safeguards epidermal differentiation and barrier function. Nature 2019; 574:249-253. [PMID: 31578523 DOI: 10.1038/s41586-019-1615-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/29/2019] [Indexed: 01/30/2023]
Abstract
The integrity of the mammalian epidermis depends on a balance of proliferation and differentiation in the resident population of stem cells1. The kinase RIPK4 and the transcription factor IRF6 are mutated in severe developmental syndromes in humans, and mice lacking these genes display epidermal hyperproliferation and soft-tissue fusions that result in neonatal lethality2-5. Our understanding of how these genes control epidermal differentiation is incomplete. Here we show that the role of RIPK4 in mouse development requires its kinase activity; that RIPK4 and IRF6 expressed in the epidermis regulate the same biological processes; and that the phosphorylation of IRF6 at Ser413 and Ser424 primes IRF6 for activation. Using RNA sequencing (RNA-seq), histone chromatin immunoprecipitation followed by sequencing (ChIP-seq) and assay for transposase-accessible chromatin using sequencing (ATAC-seq) of skin in wild-type and IRF6-deficient mouse embryos, we define the transcriptional programs that are regulated by IRF6 during epidermal differentiation. IRF6 was enriched at bivalent promoters, and IRF6 deficiency caused defective expression of genes that are involved in the metabolism of lipids and the formation of tight junctions. Accordingly, the lipid composition of the stratum corneum of Irf6-/- skin was abnormal, culminating in a severe defect in the function of the epidermal barrier. Collectively, our results explain how RIPK4 and IRF6 function to ensure the integrity of the epidermis and provide mechanistic insights into why developmental syndromes that are characterized by orofacial, skin and genital abnormalities result when this axis goes awry.
Collapse
|
22
|
Flück CE, Audí L, Fernández-Cancio M, Sauter KS, Martinez de LaPiscina I, Castaño L, Esteva I, Camats N. Broad Phenotypes of Disorders/Differences of Sex Development in MAMLD1 Patients Through Oligogenic Disease. Front Genet 2019; 10:746. [PMID: 31555317 PMCID: PMC6726737 DOI: 10.3389/fgene.2019.00746] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/16/2019] [Indexed: 02/06/2023] Open
Abstract
Disorders/differences of sex development (DSD) are the result of a discordance between chromosomal, gonadal, and genital sex. DSD may be due to mutations in any of the genes involved in sex determination and development in general, as well as gonadal and/or genital development specifically. MAMLD1 is one of the recognized DSD genes. However, its role is controversial as some MAMLD1 variants are present in normal individuals, several MAMLD1 mutations have wild-type activity in functional studies, and the Mamld1-knockout male mouse presents with normal genitalia and reproduction. We previously tested nine MAMLD1 variants detected in nine 46,XY DSD patients with broad phenotypes for their functional activity, but none of the mutants, except truncated L210X, had diminished transcriptional activity on known target promoters CYP17A1 and HES3. In addition, protein expression of MAMLD1 variants was similar to wild-type, except for the truncated L210X. We hypothesized that MAMLD1 variants may not be sufficient to explain the phenotype in 46,XY DSD individuals, and that further genetic studies should be performed to search for additional hits explaining the broad phenotypes. We therefore performed whole exome sequencing (WES) in seven of these 46,XY patients with DSD and in one 46,XX patient with ovarian insufficiency, who all carried MAMLD1 variants. WES data were filtered by an algorithm including disease-tailored lists of MAMLD1-related and DSD-related genes. Fifty-five potentially deleterious variants in 41 genes were identified; 16/55 variants were reported in genes in association with hypospadias, 8/55 with cryptorchidism, 5/55 with micropenis, and 13/55 were described in relation with female sex development. Patients carried 1-16 variants in 1-16 genes together with their MAMLD1 variation. Network analysis of the identified genes revealed that 23 genes presented gene/protein interactions with MAMLD1. Thus, our study shows that the broad phenotypes of individual DSD might involve multiple genetic variations contributing towards the complex network of sexual development.
Collapse
Affiliation(s)
- Christa E Flück
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics and Department of BioMedical Research, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Laura Audí
- Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - Mónica Fernández-Cancio
- Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - Kay-Sara Sauter
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics and Department of BioMedical Research, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Idoia Martinez de LaPiscina
- Endocrinology and Diabetes Research Group, BioCruces Bizkaia Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, University of the Basque Country (UPV-EHU), Barakaldo, Spain
| | - Luis Castaño
- Pediatric Endocrinology Section, Cruces University Hospital, Endocrinology and Diabetes Research Group, BioCruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, University of the Basque Country (UPV-EHU), Barakaldo, Spain
| | - Isabel Esteva
- Endocrinology Section, Gender Identity Unit, Regional University Hospital of Malaga, Málaga, Spain
| | - Núria Camats
- Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| |
Collapse
|
23
|
Sümer C, Boz Er AB, Dinçer T. Keratin 14 is a novel interaction partner of keratinocyte differentiation regulator: receptor-interacting protein kinase 4. ACTA ACUST UNITED AC 2019; 43:225-234. [PMID: 31582880 PMCID: PMC6713913 DOI: 10.3906/biy-1904-37] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The epidermis, the outer layer of the skin, is formed by stratified keratinocyte layers. The self-renewal of the epidermis is provided by sustained proliferation and differentiation of the keratinocyte stem cells localized to the basal layer of the epidermis. Receptor-interacting protein kinase 4 (RIPK4) is an important regulator of keratinocyte differentiation, mutations of which are associated with congenital ectodermal malformations. In an attempt to identify the molecular basis of RIPK4’s function, we applied yeast two-hybrid screen (Y2H) and found basal layer-specific keratin filament component keratin 14 (KRT14) as a novel RIPK4-interacting partner. During keratinocyte differentiation, layer-specific keratin composition is tightly regulated. Likewise, the basal layer specific KRT14/keratin 5 (KRT5) heterodimers are replaced by keratin 1 (KRT1)/keratin 10 (KRT10) in suprabasal layers. The regulation of keratin turnover is under the control of signaling associated with posttranslational modifications in which phosphorylation plays a major role. In this study, we verified the KRT14-RIPK4 interaction, which was identified with Y2H, in mammalian cells and showed that the interaction was direct by using proteins expressed in bacteria. According to our results, the N-terminal kinase domain of RIPK4 is responsible for KRT14-RIPK4 interaction; however, the RIPK4 kinase activity is dispensable for the interaction. In accordance with their interaction, RIPK4 and KRT14 colocalize within the cells, particularly at keratin filaments associated with perinuclear ring-like structures. Moreover, RIPK4 did not show any effect on KRT14/KRT5 heterodimer formation. Our results suggest that RIPK4 may regulate the keratin turnover required for keratinocyte differentiation through interacting with KRT14.
Collapse
Affiliation(s)
- Ceren Sümer
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, Trabzon Turkey
| | - Asiye Büşra Boz Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, Trabzon Turkey
| | - Tuba Dinçer
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon Turkey
| |
Collapse
|
24
|
Rogerson C, O'Shaughnessy RFL. Protein kinases involved in epidermal barrier formation: The AKT family and other animals. Exp Dermatol 2019; 27:892-900. [PMID: 29845670 DOI: 10.1111/exd.13696] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2018] [Indexed: 12/20/2022]
Abstract
Formation of a stratified epidermis is required for the performance of the essential functions of the skin; to act as an outside-in barrier against the access of microorganisms and other external factors, to prevent loss of water and solutes via inside-out barrier functions and to withstand mechanical stresses. Epidermal barrier function is initiated during embryonic development and is then maintained throughout life and restored after injury. A variety of interrelated processes are required for the formation of a stratified epidermis, and how these processes are both temporally and spatially regulated has long been an aspect of dermatological research. In this review, we describe the roles of multiple protein kinases in the regulation of processes required for epidermal barrier formation.
Collapse
Affiliation(s)
- Clare Rogerson
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London, UK
| | - Ryan F L O'Shaughnessy
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London, UK
| |
Collapse
|
25
|
Dainichi T, Matsumoto R, Mostafa A, Kabashima K. Immune Control by TRAF6-Mediated Pathways of Epithelial Cells in the EIME (Epithelial Immune Microenvironment). Front Immunol 2019; 10:1107. [PMID: 31156649 PMCID: PMC6532024 DOI: 10.3389/fimmu.2019.01107] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/01/2019] [Indexed: 12/13/2022] Open
Abstract
In the protective responses of epithelial tissues, not only immune cells but also non-immune cells directly respond to external agents. Epithelial cells can be involved in the organization of immune responses through two phases. First, the exogenous harmful agents trigger the primary responses of the epithelial cells leading to various types of immune cell activation. Second, cytokines produced by the immune cells that are activated directly by the external agents and indirectly by the epithelial cell products elicit the secondary responses giving rise to further propagation of immune responses. TRAF6 is a ubiquitin E3 ligase, which intermediates between various types of receptors for exogenous agents or endogenous mediators and activation of subsequent transcriptional responses via NF-kappaB and MAPK pathways. TRAF6 ubiquitously participates in many protective responses in immune and non-immune cells. Particularly, epithelial TRAF6 has an essential role in the primary and secondary responses via driving type 17 response in psoriatic inflammation of the skin. Consistently, many psoriasis susceptibility genes encode the TRAF6 signaling players, such as ACT1 (TRAF3IP2), A20 (TNFAIP3), ABIN1 (TNIP1), IL-36Ra (IL36RN), IkappaBzeta (NFKBIZ), and CARD14. Herein, we describe the principal functions of TRAF6, especially in terms of positive and regulatory immune controls by interaction between immune cells and epithelial cells. In addition, we discuss how TRAF6 in the epithelial cells can organize the differentiation of immune responses and drive inflammatory loops in the epithelial immune microenvironment, which is termed EIME.
Collapse
Affiliation(s)
- Teruki Dainichi
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Reiko Matsumoto
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Alshimaa Mostafa
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Dermatology, Beni-Suef University, Beni-Suef, Egypt
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore, Singapore
| |
Collapse
|
26
|
Chen L, Hayden MS, Gilmore ES, Alexander-Savino C, Oleksyn D, Gillespie K, Zhao J, Poligone B. PKK deletion in basal keratinocytes promotes tumorigenesis after chemical carcinogenesis. Carcinogenesis 2018; 39:418-428. [PMID: 29186361 DOI: 10.1093/carcin/bgx120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 11/16/2017] [Indexed: 12/19/2022] Open
Abstract
Squamous cell carcinoma (SCC) of the skin is a keratinocyte malignancy characterized by tumors presenting on sun-exposed areas with surgery being the mainstay treatment. Despite advances in targeted therapy in other skin cancers, such as basal cell carcinoma and melanoma, there have been no such advances in the treatment of SCC. This is partly due to an incomplete knowledge of the pathogenesis of SCC. We have recently identified a protein kinase C-associated kinase (PKK) as a potential tumor suppressor in SCC. We now describe a novel conditional PKK knockout mouse model, which demonstrates that PKK deficiency promotes SCC formation during chemically induced tumorigenesis. Our results further support that PKK functions as a tumor suppressor in skin keratinocytes and is important in the pathogenesis of SCC of the skin. We further define the interactions of keratinocyte PKK with TP63 and NF-κB signaling, highlighting the importance of this protein as a tumor suppressor in SCC development.
Collapse
Affiliation(s)
- Luojing Chen
- Division of Allergy, Immunology and Rheumatology, University of Rochester School of Medicine, USA
| | - Matthew S Hayden
- Rochester General Hospital Research Institute, Center for Cancer and Blood Disorders, USA.,Department of Surgery, Section of Dermatology, Dartmouth-Hitchcock Medical Center, USA
| | | | | | - David Oleksyn
- Division of Allergy, Immunology and Rheumatology, University of Rochester School of Medicine, USA
| | | | - Jiyong Zhao
- Department of Biomedical Genetics, University of Rochester School of Medicine, USA
| | - Brian Poligone
- Division of Allergy, Immunology and Rheumatology, University of Rochester School of Medicine, USA.,Rochester General Hospital Research Institute, Center for Cancer and Blood Disorders, USA
| |
Collapse
|
27
|
Kvarnung M, Taylan F, Nilsson D, Anderlid BM, Malmgren H, Lagerstedt-Robinson K, Holmberg E, Burstedt M, Nordenskjöld M, Nordgren A, Lundberg ES. Genomic screening in rare disorders: New mutations and phenotypes, highlighting ALG14 as a novel cause of severe intellectual disability. Clin Genet 2018; 94:528-537. [PMID: 30221345 DOI: 10.1111/cge.13448] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 09/04/2018] [Accepted: 09/11/2018] [Indexed: 01/20/2023]
Abstract
We have investigated 20 consanguineous families with multiple children affected by rare disorders. Detailed clinical examinations, exome sequencing of affected as well as unaffected family members and further validation of likely pathogenic variants were performed. In 16/20 families, we identified pathogenic variants in autosomal recessive disease genes (ALMS1, PIGT, FLVCR2, TFG, CYP7B1, ALG14, EXOSC3, MEGF10, ASAH1, WDR62, ASPM, PNPO, ERCC5, KIAA1109, RIPK4, MAN1B1). A number of these genes have only rarely been reported previously and our findings thus confirm them as disease genes, further delineate the associated phenotypes and expand the mutation spectrum with reports of novel variants. We highlight the findings in two affected siblings with splice altering variants in ALG14 and propose a new clinical entity, which includes severe intellectual disability, epilepsy, behavioral problems and mild dysmorphic features, caused by biallelic variants in ALG14.
Collapse
Affiliation(s)
- Malin Kvarnung
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Fulya Taylan
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Daniel Nilsson
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden.,Science for Life Laboratory, Karolinska Institutet Science Park, Stockholm, Sweden
| | - Britt-Marie Anderlid
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Helena Malmgren
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Kristina Lagerstedt-Robinson
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Eva Holmberg
- Department of Medical Bioscience, Medical and Clinical Genetics, Umeå University, Umeå, Sweden
| | - Magnus Burstedt
- Department of Medical Bioscience, Medical and Clinical Genetics, Umeå University, Umeå, Sweden
| | - Magnus Nordenskjöld
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Ann Nordgren
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Elisabeth S Lundberg
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
28
|
|
29
|
Bae HC, Jeong SH, Kim JH, Lee H, Ryu WI, Kim MG, Son ED, Lee TR, Son SW. RIP4 upregulates CCL20 expression through STAT3 signalling in cultured keratinocytes. Exp Dermatol 2018; 27:1126-1133. [DOI: 10.1111/exd.13750] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 05/30/2018] [Accepted: 06/15/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Hyun Cheol Bae
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
- Department of Orthopedic Surgery; Seoul National University Hospital; Seoul Korea
| | - Sang Hoon Jeong
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| | - Jin Hee Kim
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| | - Hana Lee
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| | - Woo-In Ryu
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| | - Min-Gyu Kim
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| | - Eui Dong Son
- AmorePacific Corp/R&D Center; Yongin-si Gyeonggi-do Korea
| | - Tae Ryong Lee
- AmorePacific Corp/R&D Center; Yongin-si Gyeonggi-do Korea
| | - Sang Wook Son
- Department of Dermatology; College of Medicine; Korea University; Seoul Korea
- Department of Biomedical Sciences; College of Medicine; Korea University; Seoul Korea
| |
Collapse
|
30
|
Tanghe G, Urwyler-Rösselet C, De Groote P, Dejardin E, De Bock PJ, Gevaert K, Vandenabeele P, Declercq W. RIPK4 activity in keratinocytes is controlled by the SCF β-TrCP ubiquitin ligase to maintain cortical actin organization. Cell Mol Life Sci 2018; 75:2827-2841. [PMID: 29435596 PMCID: PMC11105318 DOI: 10.1007/s00018-018-2763-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/22/2018] [Accepted: 01/25/2018] [Indexed: 01/20/2023]
Abstract
RIPK4 is a key player in epidermal differentiation and barrier formation. RIPK4 signaling pathways controlling keratinocyte proliferation and differentiation depend on its kinase activity leading to Dvl2, Pkp1 and IRF6 phosphorylation and NF-κB activation. However, the mechanism regulating RIPK4 activity levels remains elusive. We show that cultured keratinocytes display constitutive active phosphorylated RIPK4 while PKC signaling can trigger RIPK4 activation in various non-keratinocyte cell lines, in which RIPK4 is present in a non-phosphorylated state. Interestingly, we identified the SCFβ-TrCP ubiquitin E3 ligase complex responsible for regulating the active RIPK4 protein level. The SCFβ-TrCP complex binds to a conserved phosphodegron motif in the intermediate domain of RIPK4, subsequently leading to K48-linked ubiquitinylation and degradation. The recruitment of β-TrCP is dependent on RIPK4 activation and trans-autophosphorylation. β-TrCP knock-down resulted in RIPK4-dependent formation of actin stress fibers, cell scattering and increased cell motility, suggesting that tight control of RIPK4 activity levels is crucial to maintain cell shape and behavior in keratinocytes.
Collapse
Affiliation(s)
- Giel Tanghe
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research, Technologiepark 927, 9052, Gent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Corinne Urwyler-Rösselet
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research, Technologiepark 927, 9052, Gent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Philippe De Groote
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research, Technologiepark 927, 9052, Gent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Emmanuel Dejardin
- Laboratory of Molecular Immunology and Signal Transduction, GIGA-Institute, University of Liège, Liège, Belgium
| | - Pieter-Jan De Bock
- VIB-UGent Center for Medical Biotechnology, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Kris Gevaert
- VIB-UGent Center for Medical Biotechnology, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Peter Vandenabeele
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research, Technologiepark 927, 9052, Gent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Wim Declercq
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research, Technologiepark 927, 9052, Gent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
| |
Collapse
|
31
|
RIPK4 promotes bladder urothelial carcinoma cell aggressiveness by upregulating VEGF-A through the NF-κB pathway. Br J Cancer 2018; 118:1617-1627. [PMID: 29867225 PMCID: PMC6008479 DOI: 10.1038/s41416-018-0116-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 03/06/2018] [Accepted: 04/19/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Constitutively activated nuclear factor kappa B (NF-κB) signalling plays vital roles in bladder urothelial carcinoma (BC) progression. We investigate the effect of receptor-interacting protein kinase 4 (RIPK4) on NF-κB activation and BC progression. METHODS The expression of RIPK4 was examined in 25 cryopreserved paired bladder samples and 112 paraffin BC specimens. In vivo and in vitro assays were performed to validate effect of RIPK4 on NF-κB pathway-mediated BC progression. RESULTS High expression of RIPK4 was observed in BC tissues and was an independent predictor for poor overall survival. Up or downregulating the expression of RIPK4 enhanced or inhibited, respectively, the migration and invasion of BC cells in vitro and in vivo. Mechanistically, RIPK4 promoted K63-linked polyubiquitination of tumour necrosis factor receptor-associated factor 2 (TRAF2), receptor-interacting protein (RIP) and NF-κB essential modulator (NEMO). RIPK4 also promoted nuclear localisation of NF-κB-p65, and maintained activation of NF-κB substantially, leading to upregulation of VEGF-A, ultimately promoting BC cell aggressiveness. CONCLUSIONS Our data highlighted the molecular aetiology and clinical significance of RIPK4 in BC: upregulation of RIPK4 contributes to NF-κB activation, and upregulates VEGF-A, and BC progression. Targeting RIPK4 might represent a new therapeutic strategy to improve survival for patients with BC.
Collapse
|
32
|
A20 regulates canonical wnt-signaling through an interaction with RIPK4. PLoS One 2018; 13:e0195893. [PMID: 29718933 PMCID: PMC5931457 DOI: 10.1371/journal.pone.0195893] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/02/2018] [Indexed: 01/06/2023] Open
Abstract
A20 is a ubiquitin-editing enzyme that is known to regulate inflammatory signaling and cell death. However, A20 mutations are also frequently found in multiple malignancies suggesting a potential role as a tumor suppressor as well. We recently described a novel role for A20 in regulating the wnt-beta-catenin signaling pathway and suppressing colonic tumor development in mice. The underlying mechanisms for this phenomenon are unclear. To study this, we first generated A20 knockout cell lines by genome-editing techniques. Using these cells, we show that loss of A20 causes dysregulation of wnt-dependent gene expression by RNAseq. Mechanistically, A20 interacts with a proximal signaling component of the wnt-signaling pathway, receptor interacting protein kinase 4 (RIPK4), and regulation of wnt-signaling by A20 occurs through RIPK4. Finally, similar to the mechanism by which A20 regulates other members of the receptor interacting protein kinase family, A20 modifies ubiquitin chains on RIPK4 suggesting a possible molecular mechanism for A20’s control over the wnt-signaling pathway.
Collapse
|
33
|
Cadieux-Dion M, Safina NP, Engleman K, Saunders C, Repnikova E, Raje N, Canty K, Farrow E, Miller N, Zellmer L, Thiffault I. Novel heterozygous pathogenic variants in CHUK in a patient with AEC-like phenotype, immune deficiencies and 1q21.1 microdeletion syndrome: a case report. BMC MEDICAL GENETICS 2018. [PMID: 29523099 PMCID: PMC5845372 DOI: 10.1186/s12881-018-0556-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Ectodermal dysplasias (ED) are a group of diseases that affects the development or function of the teeth, hair, nails and exocrine and sebaceous glands. One type of ED, ankyloblepharon-ectodermal defects-cleft lip/palate syndrome (AEC or Hay-Wells syndrome), is an autosomal dominant disease characterized by the presence of skin erosions affecting the palms, soles and scalp. Other clinical manifestations include ankyloblepharon filiforme adnatum, cleft lip, cleft palate, craniofacial abnormalities and ectodermal defects such as sparse wiry hair, nail changes, dental changes, and subjective hypohydrosis. CASE PRESENTATION We describe a patient presenting clinical features reminiscent of AEC syndrome in addition to recurrent infections suggestive of immune deficiency. Genetic testing for TP63, IRF6 and RIPK4 was negative. Microarray analysis revealed a 2 MB deletion on chromosome 1 (1q21.1q21.2). Clinical exome sequencing uncovered compound heterozygous variants in CHUK; a maternally-inherited frameshift variant (c.1365del, p.Arg457Aspfs*6) and a de novo missense variant (c.1388C > A, p.Thr463Lys) on the paternal allele. CONCLUSIONS To our knowledge, this is the fourth family reported with CHUK-deficiency and the second patient with immune abnormalities. This is the first case of CHUK-deficiency with compound heterozygous pathogenic variants, including one variant that arose de novo. In comparison to cases found in the literature, this patient demonstrates a less severe phenotype than previously described.
Collapse
Affiliation(s)
- Maxime Cadieux-Dion
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA.
| | - Nicole P Safina
- Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA.,Department of Pediatrics, Children's Mercy Hospital, Kansas City, MO, USA.,University of Missouri Kansas City, School of Medicine, Kansas City, MO, USA
| | - Kendra Engleman
- Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Carol Saunders
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA.,Department of Pathology and Laboratory Medicine, Children's Mercy Hospitals, Kansas City, MO, USA.,University of Missouri Kansas City, School of Medicine, Kansas City, MO, USA
| | - Elena Repnikova
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA.,Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Nikita Raje
- Pediatric Allergy, Asthma and Immunology Clinic, Children's Mercy Hospitals, Kansas City, MO, USA
| | - Kristi Canty
- Dermatology Clinic, Children's Mercy Hospitals, Kansas City, MO, USA
| | - Emily Farrow
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA.,Department of Pediatrics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Neil Miller
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA
| | - Lee Zellmer
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospitals, Kansas City, MO, USA
| | - Isabelle Thiffault
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA.,Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA.,Department of Pathology and Laboratory Medicine, Children's Mercy Hospitals, Kansas City, MO, USA
| |
Collapse
|
34
|
Urwyler-Rösselet C, Tanghe G, Leurs K, Gilbert B, De Rycke R, De Bruyne M, Lippens S, Bartunkova S, De Groote P, Niessen C, Haftek M, Vandenabeele P, Declercq W. Keratinocyte-Specific Ablation of RIPK4 Allows Epidermal Cornification but Impairs Skin Barrier Formation. J Invest Dermatol 2018; 138:1268-1278. [PMID: 29317263 DOI: 10.1016/j.jid.2017.12.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 12/15/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
Abstract
In humans, receptor-interacting protein kinase 4 (RIPK4) mutations can lead to the autosomal recessive Bartsocas-Papas and popliteal pterygium syndromes, which are characterized by severe skin defects, pterygia, as well as clefting. We show here that the epithelial fusions observed in RIPK4 full knockout (KO) mice are E-cadherin dependent, as keratinocyte-specific deletion of E-cadherin in RIPK4 full KO mice rescued the tail-to-body fusion and fusion of oral epithelia. To elucidate RIPK4 function in epidermal differentiation and development, we generated epidermis-specific RIPK4 KO mice (RIPK4EKO). In contrast to RIPK4 full KO epidermis, RIPK4EKO epidermis was normally stratified and the outside-in skin barrier in RIPK4EKO mice was largely intact at the trunk, in contrast to the skin covering the head and the outer end of the extremities. However, RIPK4EKO mice die shortly after birth due to excessive water loss because of loss of tight junction protein claudin-1 localization at the cell membrane, which results in tight junction leakiness. In contrast, mice with keratinocyte-specific RIPK4 deletion during adult life remain viable. Furthermore, our data indicate that epidermis-specific deletion of RIPK4 results in delayed keratinization and stratum corneum maturation and altered lipid organization and is thus indispensable during embryonic development for the formation of a functional inside-out epidermal barrier.
Collapse
Affiliation(s)
- Corinne Urwyler-Rösselet
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Current affiliation: Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Giel Tanghe
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kirsten Leurs
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Barbara Gilbert
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Riet De Rycke
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Michiel De Bruyne
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Saskia Lippens
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Sonia Bartunkova
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Philippe De Groote
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Carien Niessen
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Marek Haftek
- LBTI, UMR5305 CNRS, University of Lyon, Lyon, France
| | - Peter Vandenabeele
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Wim Declercq
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
| |
Collapse
|
35
|
Busa T, Jeraiby M, Clémenson A, Manouvrier S, Granados V, Philip N, Touraine R. Confirmation that RIPK4
mutations cause not only Bartsocas-Papas syndrome but also CHAND syndrome. Am J Med Genet A 2017; 173:3114-3117. [DOI: 10.1002/ajmg.a.38475] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/03/2017] [Accepted: 08/21/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Tiffany Busa
- Unité de génétique clinique, APHM; CHU Timone-Enfants; Marseille France
| | - Mohammed Jeraiby
- Service de Génétique Clinique, Chromosomique et Moléculaire; CHU-Hôpital Nord; Saint Etienne France
| | - Alix Clémenson
- Service d'Anatomie et Cytologie Pathologiques; CHU-Hôpital Nord; Saint Etienne France
| | - Sylvie Manouvrier
- Service de Génétique médicale; Hôpital Jeanne de Flandre; CHRU de Lille; Lille France
| | - Viviana Granados
- Service de Génétique Clinique, Chromosomique et Moléculaire; CHU-Hôpital Nord; Saint Etienne France
| | - Nicole Philip
- Unité de génétique clinique, APHM; CHU Timone-Enfants; Marseille France
| | - Renaud Touraine
- Service de Génétique Clinique, Chromosomique et Moléculaire; CHU-Hôpital Nord; Saint Etienne France
| |
Collapse
|
36
|
Hammond NL, Dixon J, Dixon MJ. Periderm: Life-cycle and function during orofacial and epidermal development. Semin Cell Dev Biol 2017; 91:75-83. [PMID: 28803895 DOI: 10.1016/j.semcdb.2017.08.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/01/2017] [Accepted: 08/06/2017] [Indexed: 12/31/2022]
Abstract
Development of the secondary palate involves a complex series of embryonic events which, if disrupted, result in the common congenital anomaly cleft palate. The secondary palate forms from paired palatal shelves which grow initially vertically before elevating to a horizontal position above the tongue and fusing together in the midline via the medial edge epithelia. As the epithelia of the vertical palatal shelves are in contact with the mandibular and lingual epithelia, pathological fusions between the palate and the mandible and/or the tongue must be prevented. This function is mediated by the single cell layered periderm which forms in a distinct and reproducible pattern early in embryogenesis, exhibits highly polarised expression of adhesion complexes, and is shed from the outer surface as the epidermis acquires its barrier function. Disruption of periderm formation and/or function underlies a series of birth defects that exhibit multiple inter-epithelial adhesions including the autosomal dominant popliteal pterygium syndrome and the autosomal recessive cocoon syndrome and Bartsocas Papas syndrome. Genetic analyses of these conditions have shown that IRF6, IKKA, SFN, RIPK4 and GRHL3, all of which are under the transcriptional control of p63, play a key role in periderm formation. Despite these observations, the medial edge epithelia must rapidly acquire the capability to fuse if the palatal shelves are not to remain cleft. This process is driven by TGFβ3-mediated, down-regulation of p63 in the medial edge epithelia which allows periderm migration out of the midline epithelial seam and reduces the proliferative potential of the midline epithelial seam thereby preventing cleft palate. Together, these findings indicate that periderm plays a transient but fundamental role during embryogenesis in preventing pathological adhesion between intimately apposed, adhesion-competent epithelia.
Collapse
Affiliation(s)
- Nigel L Hammond
- Faculty of Biology, Medicine & Health, Manchester Academic Health Sciences Centre, Michael Smith Building, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Jill Dixon
- Faculty of Biology, Medicine & Health, Manchester Academic Health Sciences Centre, Michael Smith Building, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Michael J Dixon
- Faculty of Biology, Medicine & Health, Manchester Academic Health Sciences Centre, Michael Smith Building, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom.
| |
Collapse
|
37
|
Kopparam J, Chiffelle J, Angelino P, Piersigilli A, Zangger N, Delorenzi M, Meylan E. RIP4 inhibits STAT3 signaling to sustain lung adenocarcinoma differentiation. Cell Death Differ 2017; 24:1761-1771. [PMID: 28574510 PMCID: PMC5596425 DOI: 10.1038/cdd.2017.81] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 03/30/2017] [Accepted: 04/26/2017] [Indexed: 12/25/2022] Open
Abstract
Loss of epithelial differentiation and extracellular matrix (ECM) remodeling are known to facilitate cancer progression and are associated with poor prognosis in patients with lung cancer. We have identified Receptor-interacting serine/threonine protein kinase 4 (RIP4) as a regulator of tumor differentiation in lung adenocarcinoma (AC). Bioinformatics analyses of human lung AC samples showed that poorly differentiated tumors express low levels of RIP4, whereas high levels are associated with better overall survival. In vitro, lung tumor cells expressing reduced RIP4 levels showed enhanced activation of STAT3 signaling and had a greater ability to invade through collagen. In contrast, overexpression of RIP4 inhibited STAT3 activation, which abrogated interleukin-6-dependent induction of lysyl oxidase, a collagen cross-linking enzyme. In an autochthonous mouse model of lung AC initiated by Kras(G12D) expression with loss of p53, Rip4 knockdown tumors progressed to a poorly differentiated state marked by an increase in Hmga2, reduced Ttf1, and enrichment of genes regulating extracellular remodeling and Jak-Stat signaling. Tail vein injections of cells overexpressing Rip4 showed a reduced potential to invade and form tumors, which was restored by co-expression of Stat3. Altogether, our work has identified that loss of RIP4 enhances STAT3 signaling in lung cancer cells, promoting the expression of ECM remodeling genes and cancer dedifferentiation.
Collapse
Affiliation(s)
- Jawahar Kopparam
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Johanna Chiffelle
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Paolo Angelino
- Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne CH-1015, Switzerland
| | - Alessandra Piersigilli
- Institute of Animal Pathology, University of Bern, Länggassstrasse 122, Bern CH-3012, Switzerland.,Histology Core Facility, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Nadine Zangger
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland.,Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne CH-1015, Switzerland
| | - Mauro Delorenzi
- Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne CH-1015, Switzerland.,Ludwig Center for Cancer Research, University of Lausanne, Epalinges CH-1066, Switzerland.,Department of Oncology, Faculty of Biology and Medicine, University of Lausanne, Lausanne CH-1011, Switzerland
| | - Etienne Meylan
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| |
Collapse
|
38
|
Lee J, Lee P, Wu X. Molecular and cytoskeletal regulations in epidermal development. Semin Cell Dev Biol 2017; 69:18-25. [PMID: 28577925 DOI: 10.1016/j.semcdb.2017.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/19/2017] [Accepted: 05/28/2017] [Indexed: 12/11/2022]
Abstract
At the surface of the body, the epidermis covers great depth in its developmental regulation. While many genes have been shown to be important for skin development through their associations with disease phenotypes in mice and human, it is in the past decade that the intricate interplay between various molecules become gradually revealed through sophisticated genetic models and imaging analyses. In particular, there is increasing evidence suggesting that cytoskeleton-associated proteins, including adhesion proteins and the crosslinker proteins may play critical roles in regulating epidermis development. We here provide a broad overview of the various molecules involved in epidermal development with special emphasis on the cytoskeletal components.
Collapse
Affiliation(s)
- Jimmy Lee
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Philbert Lee
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA.
| |
Collapse
|
39
|
Lee P, Jiang S, Li Y, Yue J, Gou X, Chen SY, Zhao Y, Schober M, Tan M, Wu X. Phosphorylation of Pkp1 by RIPK4 regulates epidermal differentiation and skin tumorigenesis. EMBO J 2017; 36:1963-1980. [PMID: 28507225 DOI: 10.15252/embj.201695679] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 04/03/2017] [Accepted: 04/07/2017] [Indexed: 02/06/2023] Open
Abstract
Tissue homeostasis of skin is sustained by epidermal progenitor cells localized within the basal layer of the skin epithelium. Post-translational modification of the proteome, such as protein phosphorylation, plays a fundamental role in the regulation of stemness and differentiation of somatic stem cells. However, it remains unclear how phosphoproteomic changes occur and contribute to epidermal differentiation. In this study, we survey the epidermal cell differentiation in a systematic manner by combining quantitative phosphoproteomics with mammalian kinome cDNA library screen. This approach identified a key signaling event, phosphorylation of a desmosome component, PKP1 (plakophilin-1) by RIPK4 (receptor-interacting serine-threonine kinase 4) during epidermal differentiation. With genome-editing and mouse genetics approach, we show that loss of function of either Pkp1 or Ripk4 impairs skin differentiation and enhances epidermal carcinogenesis in vivo Phosphorylation of PKP1's N-terminal domain by RIPK4 is essential for their role in epidermal differentiation. Taken together, our study presents a global view of phosphoproteomic changes that occur during epidermal differentiation, and identifies RIPK-PKP1 signaling as novel axis involved in skin stratification and tumorigenesis.
Collapse
Affiliation(s)
- Philbert Lee
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Shangwen Jiang
- The Chemical Proteomics Center and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yuanyuan Li
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Jiping Yue
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Xuewen Gou
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Shao-Yu Chen
- Department of Pharmacology and Toxicology, University of Louisville Health Science Center, Louisville, KY, USA
| | - Yingming Zhao
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Markus Schober
- The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY, USA
| | - Minjia Tan
- The Chemical Proteomics Center and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| |
Collapse
|
40
|
McKay M, Coad R. A brother and sister with breast cancer, BRCA2 mutations and bilateral supernumerary nipples. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:106. [PMID: 28361071 PMCID: PMC5360625 DOI: 10.21037/atm.2017.03.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 02/10/2017] [Indexed: 09/28/2023]
Abstract
We describe a 54-year-old man with breast cancer and a BRCA2 mutation who was also found to have bilateral supernumerary nipples. His sister, also with a BRCA2 mutation, was diagnosed with breast cancer in her late forties; she also had bilateral supernumerary nipples. We address the significance of breast cancer arising in breast tissue underlying supernumerary nipples; the known association between supernumerary nipples and genitourinary malignancies/malformations and the possible link between BRCA2 and supernumerary nipple development. We believe that this is the first described case of the latter. We then outline an approach to further management for supernumerary nipple cases.
Collapse
Affiliation(s)
- Michael McKay
- University of Sydney, Department of Medicine, Camperdown, 2050 NSW, Australia
| | - Ryan Coad
- North Coast Cancer Institute, Lismore, 2480 NSW, Australia
| |
Collapse
|
41
|
30 Years of NF-κB: A Blossoming of Relevance to Human Pathobiology. Cell 2017; 168:37-57. [PMID: 28086098 DOI: 10.1016/j.cell.2016.12.012] [Citation(s) in RCA: 1324] [Impact Index Per Article: 189.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/08/2016] [Accepted: 12/08/2016] [Indexed: 12/15/2022]
Abstract
NF-κB was discovered 30 years ago as a rapidly inducible transcription factor. Since that time, it has been found to have a broad role in gene induction in diverse cellular responses, particularly throughout the immune system. Here, we summarize elaborate regulatory pathways involving this transcription factor and use recent discoveries in human genetic diseases to place specific proteins within their relevant medical and biological contexts.
Collapse
|
42
|
Azizmohammadi S, Azizmohammadi S, Safari A, Kaghazian M, Sadrkhanlo M, Behnod V, Seifoleslami M. High-Level Expression of RIPK4 and EZH2 Contributes to Lymph Node Metastasis and Predicts Favorable Prognosis in Patients With Cervical Cancer. Oncol Res 2016; 25:495-501. [PMID: 27697098 PMCID: PMC7841057 DOI: 10.3727/096504016x14749735594687] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The investigation of specific genes will establish more useful biomarkers for accurate detection and management of gynecological cancers, especially patients with cervical cancer (CCP). The aim of this study was to evaluate the expression level of RIPK4 and EZH2 messenger RNA (RIPK4 and EZH2 mRNA) in CCP. Expression of RIPK4 and EZH2 in the tissues was determined by immunohistochemistry and qRT-PCR methods. Correlations of RIPK4 and EZH2 mRNA with clinical and pathological parameters were analyzed using the Fisher’s exact test. The mRNA level of RIPK4 was significantly upregulated in tumor tissues compared with matched adjacent normal tissues (4.10 ± 0.89 vs. 1.5 ± 0.82; p = 0.021). EZH2 mRNA was increased in cancer tissues compared to normal tissues (3.54 ± 0.71 vs. 1.2 ± 0.65; p = 0.003). High expression of RIPK4 was observed in 25 patients (64.1%), whereas weak expression was seen in 14 cases (35.9%). Furthermore, the expression of RIPK4 was overexpressed in matched adjacent normal tissues (p = 0.004). FIGO stage and lymph node metastasis were significantly linked to a higher expression of RIPK4 (p < 0.05). Overexpression of EZH2 was found in 30 patients (76.9%) and was associated with FIGO stage, histological type, and lymph node metastasis (p < 0.05). In conclusion, our data suggest that RIPK4/EZH2 markers might be used as potential predictors of prognosis in cervical cancer.
Collapse
Affiliation(s)
- Susan Azizmohammadi
- Department of Gynecology, Hajar Hospital, AJA University of Medical Sciences, Tehran, Iran
| | - Sima Azizmohammadi
- Department of Gynecology, Hajar Hospital, AJA University of Medical Sciences, Tehran, Iran
| | - Aghdas Safari
- Department of Gynecology, Imam Reza Hospital, AJA University of Medical Sciences, Tehran, Iran
| | - Maria Kaghazian
- Department of Biology, Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mina Sadrkhanlo
- Department of Obstetrics and Gynecology, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahid Behnod
- Department of Molecular Biology, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mehri Seifoleslami
- Department of Gynecology, Khanevadeh Hospital, AJA University of Medical Sciences, Tehran, Iran
| |
Collapse
|
43
|
Scholz GM, Sulaiman NS, Al Baiiaty S, Kwa MQ, Reynolds EC. A novel regulatory relationship between RIPK4 and ELF3 in keratinocytes. Cell Signal 2016; 28:1916-1922. [PMID: 27667567 DOI: 10.1016/j.cellsig.2016.09.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 12/16/2022]
Abstract
Keratinocytes are central to the barrier functions of surface epithelia, such as the gingiva and epidermis. RIPK4 is a key regulator of keratinocyte differentiation; however, the signalling pathways in which it functions remain poorly defined. In this study, we identified a regulatory relationship between RIPK4 and ELF3, an ETS family transcription factor. RIPK4 was shown to be important for the upregulation of ELF3 gene expression by the PKC agonist PMA in both oral and epidermal keratinocytes. RIPK4 promotes keratinocyte differentiation in part by phosphorylating and thereby activating the IRF6 transcription factor. Significantly, silencing of IRF6 inhibited the PMA-inducible expression of ELF3. A role for the GRHL3 transcription factor, a downstream target gene of IRF6, in the regulation of ELF3 expression was similarly demonstrated. ELF3 has previously been shown to regulate the expression of SPPR1A and SPRR1B, small proline-rich proteins that contribute to the cornification of keratinocytes. Consistently, RIPK4 and IRF6 were important for the PMA-inducible expression of SPRR1A and SPRR1B. They were also important for the upregulation of TGM1, a transglutaminase that catalyses the cross-linking of proteins, including small proline-rich proteins, during keratinocyte cornification. RIPK4 was also shown to upregulate the expression of TGM2 independently of IRF6. Collectively, our findings position RIPK4 upstream of a hierarchal IRF6-GRHL3-ELF3 transcription factor pathway in keratinocytes, as well as provide insight into a potential role for RIPK4 in the regulation of keratinocyte cornification.
Collapse
Affiliation(s)
- Glen M Scholz
- Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia
| | - Nur S Sulaiman
- Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia
| | - Sahar Al Baiiaty
- Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia
| | - Mei Qi Kwa
- Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia
| | - Eric C Reynolds
- Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia.
| |
Collapse
|
44
|
RIPK4 activates an IRF6-mediated proinflammatory cytokine response in keratinocytes. Cytokine 2016; 83:19-26. [DOI: 10.1016/j.cyto.2016.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/08/2016] [Accepted: 03/08/2016] [Indexed: 12/12/2022]
|
45
|
Leslie EJ, O'Sullivan J, Cunningham ML, Singh A, Goudy SL, Ababneh F, Alsubaie L, Ch'ng GS, van der Laar IMBH, Hoogeboom AJM, Dunnwald M, Kapoor S, Jiramongkolchai P, Standley J, Manak JR, Murray JC, Dixon MJ. Expanding the genetic and phenotypic spectrum of popliteal pterygium disorders. Am J Med Genet A 2016; 167A:545-52. [PMID: 25691407 DOI: 10.1002/ajmg.a.36896] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 10/31/2014] [Indexed: 01/03/2023]
Abstract
The popliteal pterygia syndromes are a distinct subset of the hundreds of Mendelian orofacial clefting syndromes. Popliteal pterygia syndromes have considerable variability in severity and in the associated phenotypic features but are all characterized by cutaneous webbing across one or more major joints, cleft lip and/or palate, syndactyly, and genital malformations. Heterozygous mutations in IRF6 cause popliteal pterygium syndrome (PPS) while homozygous mutations in RIPK4 or CHUK (IKKA) cause the more severe Bartsocas-Papas syndrome (BPS) and Cocoon syndrome, respectively. In this study, we report mutations in six pedigrees with children affected with PPS or BPS. Using a combination of Sanger and exome sequencing, we report the first case of an autosomal recessive popliteal pterygium syndrome caused by homozygous mutation of IRF6 and the first case of uniparental disomy of chromosome 21 leading to a recessive disorder. We also demonstrate that mutations in RIPK4 can cause features with a range of severity along the PPS-BPS spectrum and that mutations in IKKA can cause a range of features along the BPS-Cocoon spectrum. Our findings have clinical implications for genetic counseling of families with pterygia syndromes and further implicate IRF6, RIPK4, and CHUK (IKKA) in potentially interconnected pathways governing epidermal and craniofacial development.
Collapse
|
46
|
Chirieleison SM, Kertesy SB, Abbott DW. Synthetic Biology Reveals the Uniqueness of the RIP Kinase Domain. THE JOURNAL OF IMMUNOLOGY 2016; 196:4291-7. [PMID: 27045108 DOI: 10.4049/jimmunol.1502631] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/06/2016] [Indexed: 01/26/2023]
Abstract
The RIP kinases (RIPKs) play an essential role in inflammatory signaling and inflammatory cell death. However, the function of their kinase activity has been enigmatic, and only recently has kinase domain activity been shown to be crucial for their signal transduction capacity. Despite this uncertainty, the RIPKs have been the subject of intense pharmaceutical development with a number of compounds currently in preclinical testing. In this work, we seek to determine the functional redundancy between the kinase domains of the four major RIPK family members. We find that although RIPK1, RIPK2, and RIPK4 are similar in that they can all activate NF-κB and induce NF-κB essential modulator ubiquitination, only RIPK2 is a dual-specificity kinase. Domain swapping experiments showed that the RIPK4 kinase domain could be converted to a dual-specificity kinase and is essentially indistinct from RIPK2 in biochemical and molecular activity. Surprisingly, however, replacement of RIPK2's kinase domain with RIPK4's did not complement a nucleotide-binding oligomerization domain 2 signaling or gene expression induction defect in RIPK2(-/-) macrophages. These findings suggest that RIPK2's kinase domain is functionally unique compared with other RIPK family members and that pharmacologic targeting of RIPK2 can be separated from the other RIPKs.
Collapse
Affiliation(s)
- Steven M Chirieleison
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Sylvia B Kertesy
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Derek W Abbott
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| |
Collapse
|
47
|
Conte F, Oti M, Dixon J, Carels CEL, Rubini M, Zhou H. Systematic analysis of copy number variants of a large cohort of orofacial cleft patients identifies candidate genes for orofacial clefts. Hum Genet 2015; 135:41-59. [PMID: 26561393 PMCID: PMC4698300 DOI: 10.1007/s00439-015-1606-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/15/2015] [Indexed: 12/16/2022]
Abstract
Orofacial clefts (OFCs) represent a large fraction of human birth defects and are one of the most common phenotypes affected by large copy number variants (CNVs). Due to the limited number of CNV patients in individual centers, CNV analyses of a large number of OFC patients are challenging. The present study analyzed 249 genomic deletions and 226 duplications from a cohort of 312 OFC patients reported in two publicly accessible databases of chromosome imbalance and phenotype in humans, DECIPHER and ECARUCA. Genomic regions deleted or duplicated in multiple patients were identified, and genes in these overlapping CNVs were prioritized based on the number of genes encompassed by the region and gene expression in embryonic mouse palate. Our analyses of these overlapping CNVs identified two genes known to be causative for human OFCs, SATB2 and MEIS2, and 12 genes (DGCR6, FGF2, FRZB, LETM1, MAPK3, SPRY1, THBS1, TSHZ1, TTC28, TULP4, WHSC1, WHSC2) that are associated with OFC or orofacial development. Additionally, we report 34 deleted and 24 duplicated genes that have not previously been associated with OFCs but are associated with the BMP, MAPK and RAC1 pathways. Statistical analyses show that the high number of overlapping CNVs is not due to random occurrence. The identified genes are not located in highly variable genomic regions in healthy populations and are significantly enriched for genes that are involved in orofacial development. In summary, we report a CNV analysis pipeline of a large cohort of OFC patients and identify novel candidate OFC genes.
Collapse
Affiliation(s)
- Federica Conte
- Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands.,Medical Genetic Unit, Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Martin Oti
- Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands
| | - Jill Dixon
- Faculty of Medical and Human Sciences, University of Manchester, Michael Smith Building, Oxford Road, Manchester, M13 9PT, UK
| | - Carine E L Carels
- Department of Orthodontics and Craniofacial Biology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Michele Rubini
- Medical Genetic Unit, Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy.
| | - Huiqing Zhou
- Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands. .,Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
| |
Collapse
|
48
|
Twigg SRF, Wilkie AOM. New insights into craniofacial malformations. Hum Mol Genet 2015; 24:R50-9. [PMID: 26085576 PMCID: PMC4571997 DOI: 10.1093/hmg/ddv228] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 06/15/2015] [Indexed: 12/13/2022] Open
Abstract
Development of the human skull and face is a highly orchestrated and complex three-dimensional morphogenetic process, involving hundreds of genes controlling the coordinated patterning, proliferation and differentiation of tissues having multiple embryological origins. Craniofacial malformations that occur because of abnormal development (including cleft lip and/or palate, craniosynostosis and facial dysostoses), comprise over one-third of all congenital birth defects. High-throughput sequencing has recently led to the identification of many new causative disease genes and functional studies have clarified their mechanisms of action. We present recent findings in craniofacial genetics and discuss how this information together with developmental studies in animal models is helping to increase understanding of normal craniofacial development.
Collapse
Affiliation(s)
- Stephen R F Twigg
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Andrew O M Wilkie
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| |
Collapse
|
49
|
Kousa YA, Schutte BC. Toward an orofacial gene regulatory network. Dev Dyn 2015; 245:220-32. [PMID: 26332872 DOI: 10.1002/dvdy.24341] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/17/2015] [Accepted: 08/17/2015] [Indexed: 12/26/2022] Open
Abstract
Orofacial clefting is a common birth defect with significant morbidity. A panoply of candidate genes have been discovered through synergy of animal models and human genetics. Among these, variants in interferon regulatory factor 6 (IRF6) cause syndromic orofacial clefting and contribute risk toward isolated cleft lip and palate (1/700 live births). Rare variants in IRF6 can lead to Van der Woude syndrome (1/35,000 live births) and popliteal pterygium syndrome (1/300,000 live births). Furthermore, IRF6 regulates GRHL3 and rare variants in this downstream target can also lead to Van der Woude syndrome. In addition, a common variant (rs642961) in the IRF6 locus is found in 30% of the world's population and contributes risk for isolated orofacial clefting. Biochemical studies revealed that rs642961 abrogates one of four AP-2alpha binding sites. Like IRF6 and GRHL3, rare variants in TFAP2A can also lead to syndromic orofacial clefting with lip pits (branchio-oculo-facial syndrome). The literature suggests that AP-2alpha, IRF6 and GRHL3 are part of a pathway that is essential for lip and palate development. In addition to updating the pathways, players and pursuits, this review will highlight some of the current questions in the study of orofacial clefting.
Collapse
Affiliation(s)
- Youssef A Kousa
- Biochemistry and Molecular Biology Department, Michigan State University, East Lansing, Michigan
| | - Brian C Schutte
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan
| |
Collapse
|
50
|
Li Y, Cagirici HB, Horpaopan S, Ott J, Imai A, Majewski J, Lathrop M. Leveling the Playing Field in Homozygosity Mapping Using Map Distances. Ann Hum Genet 2015; 79:366-372. [PMID: 26179257 DOI: 10.1111/ahg.12125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/20/2015] [Accepted: 05/21/2015] [Indexed: 12/31/2022]
Affiliation(s)
- Yi Li
- School of Statistics; Shanxi University of Finance and Economics; Taiyuan Shanxi China
| | - Halise Busra Cagirici
- Department of Biomedical Sciences and Engineering; Koc University; Sariyer Istanbul Turkey
| | - Sukanya Horpaopan
- Department of Anatomy; Faculty of Medical Science; Naresuan University; Phitsanulok 65000 Thailand
| | - Jurg Ott
- Chinese Academy of Sciences; Institute of Psychology; Beijing China
- Laboratory of Statistical Genetics; Rockefeller University; NY USA
| | - Atsuko Imai
- Department of Cardiovascular Medicine; Osaka University Graduate School of Medicine; Osaka Japan
| | - Jacek Majewski
- McGill University and Genome Québec Innovation Centre; Montreal Canada
| | - Mark Lathrop
- McGill University and Genome Québec Innovation Centre; Montreal Canada
| |
Collapse
|