1
|
Niu X, Li X, Han Q, Hou R, Zhang K. Long-term survival of harlequin ichthyosis in two siblings with novel ABCA12 mutations. Int J Dermatol 2023; 62:e639-e641. [PMID: 37602715 DOI: 10.1111/ijd.16812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/16/2023] [Accepted: 08/04/2023] [Indexed: 08/22/2023]
Affiliation(s)
- Xuping Niu
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xinhua Li
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Qixin Han
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ruixia Hou
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Kaiming Zhang
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| |
Collapse
|
2
|
Shibata A, Akiyama M. Epidemiology, medical genetics, diagnosis and treatment of harlequin ichthyosis in Japan. Pediatr Int 2015; 57:516-22. [PMID: 25857373 DOI: 10.1111/ped.12638] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 02/01/2015] [Accepted: 02/13/2015] [Indexed: 11/30/2022]
Abstract
Ichthyoses are a group of disorders marked by whitish, brown or dark-brown scales on the skin of almost the whole body. Harlequin ichthyosis (HI) is the most severe form. Neonatal death from HI was once common. Due to intensive neonatal care and, probably, to the early introduction of oral retinoids, HI outcome has improved. For definitive diagnosis and the exclusion of other disorders, such as lamellar ichthyosis, which also shows a collodion baby phenotype, it is helpful to refer to electron microscopy of abnormal or absent lamellar granules and a heavy accumulation of lipid droplets in the keratinocytes. ATP-binding cassette transporter A12 (ABCA12) is known as the causative gene of HI. Severe ABCA12 deficiency results in malformation of intercellular lipid layers in the cornified layers and leads to epidermal lipid barrier disruption. In HI patients, at least one mutation on each allele must be a truncation or deletion mutation to cause serious loss of ABCA12 function. Identification of the gene underlying HI has enabled DNA-based prenatal diagnosis for HI at the earlier stages of pregnancy with low risk. There are no curative treatments for HI. Abca12-deficient mice were created as a model of HI. Treatment of the model mice with retinoid or steroid has not been successful.
Collapse
Affiliation(s)
- Akitaka Shibata
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
3
|
Peterson H, Lofgren S, Bremmer S, Krol A. Novel ABCA-12 mutations leading to recessive congenital ichthyosis. Pediatr Dermatol 2013; 30:e236-7. [PMID: 22299640 DOI: 10.1111/j.1525-1470.2011.01695.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Mutations in the keratinocyte lipid transporter adenosine triphosphate-binding cassette A12 (ABCA12) are known to cause harlequin ichthyosis. More recently, mutations in this gene have been demonstrated to cause other phenotypes within the spectrum of recessive congenital ichthyosis. We report the case of an infant with novel heterozygous mutations in ABCA12 who exhibited features and a clinical course more consistent with congenital ichthyosiform erythroderma than harlequin ichthyosis.
Collapse
Affiliation(s)
- Haley Peterson
- Department of Dermatology, Oregon Health & Science University, Portland, Oregon
| | | | | | | |
Collapse
|
4
|
Umemoto H, Akiyama M, Yanagi T, Sakai K, Aoyama Y, Oizumi A, Suga Y, Kitagawa Y, Shimizu H. New insight into genotype/phenotype correlations in ABCA12 mutations in harlequin ichthyosis. J Dermatol Sci 2011; 61:136-9. [DOI: 10.1016/j.jdermsci.2010.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Accepted: 11/24/2010] [Indexed: 11/25/2022]
|
5
|
Akiyama M. ABCA12 mutations and autosomal recessive congenital ichthyosis: A review of genotype/phenotype correlations and of pathogenetic conceptsa. Hum Mutat 2010; 31:1090-6. [DOI: 10.1002/humu.21326] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
6
|
de Juanes S, Epp N, Latzko S, Neumann M, Fürstenberger G, Hausser I, Stark HJ, Krieg P. Development of an ichthyosiform phenotype in Alox12b-deficient mouse skin transplants. J Invest Dermatol 2009; 129:1429-36. [PMID: 19122646 DOI: 10.1038/jid.2008.410] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
12R-lipoxygenase (12R-LOX) represents a key enzyme of a recently identified eicosanoid pathway in the skin that plays an essential role in the establishment and/or maintenance of the epidermal barrier function. Genetic studies show that loss-of-function mutations in ALOX12B, encoding 12R-LOX, and in ALOXE3, encoding another closely related LOX involved in this pathway, are the second most common cause for autosomal recessive congenital ichthyosis (ARCI). To investigate the pathomechanism of ARCI and the function of 12R-LOX, we recently generated a 12R-LOX knockout model. 12R-LOX-deficient mice die rapidly after birth from severe barrier dysfunction without exhibiting an obvious cutaneous phenotype. Thus, we analyzed the adult phenotype of 12R-LOX(-/-) skin transplanted onto nude mice. 12R-LOX(-/-) skin develops an ichthyosiform appearance with thickening of the epidermis, hyperproliferation, hypergranulosis, focal parakeratosis, and severe hyperkeratosis. The adult mutant mouse skin phenotype closely reproduces the ichthyosis phenotype seen in patients with ALOX12B mutations. Western blot analysis revealed restoration of profilaggrin processing that used to be disturbed in neonatal mutant skin and overexpression of filaggrin, involucrin, and repetin. The results indicate that 12R-LOX knockout mice may represent a useful animal model for a detailed analysis of mechanisms involved in ARCI forms that are associated with impaired LOX metabolism.
Collapse
Affiliation(s)
- Silvia de Juanes
- Genome Modifications and Carcinogenesis, German Cancer Research Center, Heidelberg, Germany
| | | | | | | | | | | | | | | |
Collapse
|
7
|
|
8
|
DNA-based prenatal exclusion of harlequin ichthyosis. J Am Acad Dermatol 2008; 58:653-6. [DOI: 10.1016/j.jaad.2007.12.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Revised: 12/07/2007] [Accepted: 12/19/2007] [Indexed: 10/22/2022]
|
9
|
Akiyama M, Sakai K, Hatamochi A, Yamazaki S, McMillan JR, Shimizu H. Novel compound heterozygous nonsense and missense ABCA12 mutations lead to nonbullous congenital ichthyosiform erythroderma. Br J Dermatol 2008; 158:864-7. [PMID: 18284401 DOI: 10.1111/j.1365-2133.2008.08439.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
10
|
Sakai K, Akiyama M, Sugiyama-Nakagiri Y, McMillan JR, Sawamura D, Shimizu H. Localization of ABCA12 from Golgi apparatus to lamellar granules in human upper epidermal keratinocytes. Exp Dermatol 2008; 16:920-6. [PMID: 17927575 DOI: 10.1111/j.1600-0625.2007.00614.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
ABCA12 is an ATP-binding cassette transporter and is thought to act as a transmembrane lipid transporter. We reported that deleterious ABCA12 mutations cause a disturbance in lamellar granule (LG) lipid transport in the epidermal granular layer keratinocytes, resulting in harlequin ichthyosis, a severe genodermatosis. Detailed localization of ABCA12 in comparison with glucosylceramide and Golgi apparatus markers were studied in order to obtain clues to clarify the function(s) of ABCA12 in human skin. We performed double-labelling immunofluorescent staining using antibodies against ABCA12, glucosylceramide and two Golgi apparatus markers (TGN46 and GM130) in normal human skin and cultured keratinocytes. Immunogold electron microscopy for ABCA12 and glucosylceramide was studied on postembedding and cryoultrathin sections of normal human skin. Confocal laser scanning microscopy demonstrated that ABCA12 and glucosylceramide co-localized in the granular layer keratinocytes as well as in keratinocytes cultured in high Ca2+ conditions through the Golgi apparatus to the cell periphery. Postembedding immunogold electron microscopy revealed that both ABCA12 and glucosylceramide labellings were associated with the LG of the uppermost granular layer keratinocytes. Using cryoultramicrotomy, lamellar structures in the LG were more clearly observed, and ultrastructural localization of ABCA12 and glucosylceramide was better demonstrated to LG in the uppermost granular layer cells. These results indicate that ABCA12 plays an important role in lipid transport from the Golgi apparatus to LG in human granular layer keratinocytes.
Collapse
Affiliation(s)
- Kaori Sakai
- Department of Dermatology, Hokkaido University Graduate School of Medicine, N15 W7, Sapporo 060-8638, Japan
| | | | | | | | | | | |
Collapse
|
11
|
Thomas A, Sinclair C, Mahmud N, Cullup T, Mellerio J, Harper J, Dale B, Turc-Carel C, Hohl D, McGrath J, Vahlquist A, Hellstrom-Pigg M, Ganemo A, Metcalfe K, Mein C, O’Toole E, Kelsell D. Novel and recurring ABCA12 mutations associated with harlequin ichthyosis: implications for prenatal diagnosis. Br J Dermatol 2007; 158:611-3. [DOI: 10.1111/j.1365-2133.2007.08277.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
12
|
Akiyama M, Sakai K, Sato T, McMillan JR, Goto M, Sawamura D, Shimizu H. Compound Heterozygous ABCA12 Mutations Including a Novel Nonsense Mutation Underlie Harlequin Ichthyosis. Dermatology 2007; 215:155-9. [PMID: 17684380 DOI: 10.1159/000104269] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Accepted: 02/20/2007] [Indexed: 11/19/2022] Open
Abstract
Recently, it has been reported that several harlequin ichthyosis (HI) patients survive the neonatal period and their condition subsequently improves. Here we describe a 2-year-old Japanese boy who exhibited typical clinical features of HI at birth. He survived beyond the neonatal period after oral retinoid treatment and, at the age of 2 years, showed moderately thick, lamellar scales and erythroderma over his whole body. The patient is a compound heterozygote for 2 ABCA12 mutations, a paternal deletion mutation c.2021_2022del (p.Lys674ArgfsX63) and a novel maternal nonsense mutation c.7444C --> T (p.Arg2482X). Electron microscopic observation of a skin biopsy specimen from the perinatal period revealed epidermal ultrastructural features consistent with HI. Immunofluorescence labeling using antiserum against a C-terminal ABCA12 epitope showed loss of expression in the patient's epidermis. The present patient demonstrates that rapid diagnosis of HI by ABCA12 expression analysis and mutation detection, and early commencement of systemic retinoid therapy are crucial to significantly improving an HI patient's prognosis.
Collapse
Affiliation(s)
- Masashi Akiyama
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | | | | | | | | | | | | |
Collapse
|
13
|
Akiyama M, Titeux M, Sakai K, McMillan JR, Tonasso L, Calvas P, Jossic F, Hovnanian A, Shimizu H. DNA-Based Prenatal Diagnosis of Harlequin Ichthyosis and Characterization of ABCA12 Mutation Consequences. J Invest Dermatol 2007; 127:568-73. [PMID: 17082782 DOI: 10.1038/sj.jid.5700617] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Until the identification of ABCA12 as the causative gene, prenatal diagnosis (PD) for harlequin ichthyosis (HI) had been performed by electron microscopic observation of fetal skin biopsy samples. We report the first case of HI DNA-based PD. Direct sequence analysis of ABCA12 revealed that the deceased proband was a compound heterozygote for two novel mutations. The maternal nonsense mutation p.Ser1249Term likely leads to nonsense-mediated messenger RNA decay. The paternal mutation c.7436G>A affects the last codon of exon 50 and was expected to be a splice site mutation. For their third pregnancy, the parents requested PD. Direct sequence analysis of fetal genomic DNA from amniotic fluid cells at 17 weeks gestation revealed the fetus was a compound heterozygote for both mutations. The parents requested the pregnancy to be terminated. Analysis of ABCA12 transcripts of cultured keratinocytes from the abortus showed the presence of six abnormally spliced products from the allele carrying the splice site mutation. Four of them lead to premature termination codons whereas the two others produced shortened proteins missing 21 and 31 amino acids from the second ATP-binding cassette. This report provides evidence for residual ABCA12 expression in HI, and demonstrates the efficiency of early DNA-based PD of HI.
Collapse
Affiliation(s)
- Masashi Akiyama
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
|