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Amano K, Ishiguchi M, Aikawa T, Kimata M, Kishi N, Fujimaki T, Murakami A, Kogo M. Cleft Lip in Oculodentodigital Dysplasia Suggests Novel Roles for Connexin43. J Dent Res 2012; 91:38S-44S. [DOI: 10.1177/0022034512447952] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Oculodentodigital Dysplasia (ODDD) is a rare syndrome involving anomalies in eye, tooth, and digit formation, caused by mutations in CX43/ GJA1. In addition to classic dental features, ODDD includes oral and craniofacial accessory symptoms such as characteristic facial appearance and cleft palate. However, there have been no reports of ODDD accompanied by cleft lip. Herein we report, for the first time, a male, sporadic, Asian proband presenting bilateral cleft lip. By direct sequence analysis, our proband was diagnosed as having ODDD with a heterozygous mutation, codon 142 G>A in GJA1 and CX43E48K. We excluded the possibility of pathogenic mutations in B3GALTL, BMP4, TFAP2A, PVRL1, IRF6, and MSX1. To address how CX43/ GJA1 is related to cleft lip, we performed immunohistochemistry using mouse and human mid-facial tissue. CX43 expression was detected in the nasal compartment and nasal and maxillary processes at murine developmental stage E12.5. Furthermore, CX43 expression was found in the epithelial tissue inside the human subepithelial cleft lip that completes epithelial fusion. Therefore, we suggest that CX43/ GJA1 is involved in lip formation. Our case report of ODDD with a bilateral cleft lip suggests that CX43/ GJA1 might be a novel candidate gene for syndromic cleft lip.
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Affiliation(s)
- K. Amano
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
| | - M. Ishiguchi
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - T. Aikawa
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - M. Kimata
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - N. Kishi
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - T. Fujimaki
- Department of Ophthalmology, Juntendo University School of Medicine, Tokyo, Japan
| | - A. Murakami
- Department of Ophthalmology, Juntendo University School of Medicine, Tokyo, Japan
| | - M. Kogo
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
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