Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome
Abstract Background Blepharophimosis, ptosis, epicanthus inversus syndrome (BPES) is a rare inheritable disease that mainly affects eyelid development associated with (type I) or without (type II) ovarian dysfunction, resulting in premature ovarian failure (POF). Mutations in the gene forkhead box L...
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| Format: | Article |
| Language: | English |
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BMC
2018-07-01
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| Series: | BMC Medical Genetics |
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| Online Access: | http://link.springer.com/article/10.1186/s12881-018-0631-8 |
| _version_ | 1831685243215544320 |
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| author | Lu Zhou Jiaqi Wang Tailing Wang |
| author_facet | Lu Zhou Jiaqi Wang Tailing Wang |
| author_sort | Lu Zhou |
| collection | DOAJ |
| description | Abstract Background Blepharophimosis, ptosis, epicanthus inversus syndrome (BPES) is a rare inheritable disease that mainly affects eyelid development associated with (type I) or without (type II) ovarian dysfunction, resulting in premature ovarian failure (POF). Mutations in the gene forkhead box L2 (FOXL2) have been shown to be responsible for BPES. The aim of this study was to determine and functionally validate the FOXL2 mutation in a Chinese BPES family. Methods Twelve individuals including five BPES patients from a Chinese family were enrolled. Genomic DNA was extracted from peripheral blood of enrolled subjects. The coding region of the FOXL2 gene was amplified and mutations were determined by sequencing analyses. Functional analysis was carried out to study changes in expression and transcriptional activity of the mutant FOXL2 protein. Results A novel mutation in the FOXL2 gene (c.931C > T) was detected in all five BPES patients, which converts a histidine residue into a tyrosine (p.H311Y) in the FOXL2 protein. Functional analysis revealed that this point mutation reduces FOXL2 protein expression, concomitant with decreased transcriptional activity on the steroidogenic acute regulatory (StAR) gene promotor. Conclusions Our results expand the mutational spectrum of the FOXL2 gene and provide additional insights to the research on the molecular pathogenesis of FOXL2 in BPES. |
| first_indexed | 2024-12-20T08:17:06Z |
| format | Article |
| id | doaj.art-a5fa673115674e6c96d74f249faa4e59 |
| institution | Directory Open Access Journal |
| issn | 1471-2350 |
| language | English |
| last_indexed | 2024-12-20T08:17:06Z |
| publishDate | 2018-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Medical Genetics |
| spelling | doaj.art-a5fa673115674e6c96d74f249faa4e592022-12-21T19:47:06ZengBMCBMC Medical Genetics1471-23502018-07-011911710.1186/s12881-018-0631-8Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndromeLu Zhou0Jiaqi Wang1Tailing Wang2The 3rd Department, Plastic Surgery Hospital of the Chinese Academy of Medical Sciences, Peking Union Medical CollegeThe 3rd Department, Plastic Surgery Hospital of the Chinese Academy of Medical Sciences, Peking Union Medical CollegeThe 3rd Department, Plastic Surgery Hospital of the Chinese Academy of Medical Sciences, Peking Union Medical CollegeAbstract Background Blepharophimosis, ptosis, epicanthus inversus syndrome (BPES) is a rare inheritable disease that mainly affects eyelid development associated with (type I) or without (type II) ovarian dysfunction, resulting in premature ovarian failure (POF). Mutations in the gene forkhead box L2 (FOXL2) have been shown to be responsible for BPES. The aim of this study was to determine and functionally validate the FOXL2 mutation in a Chinese BPES family. Methods Twelve individuals including five BPES patients from a Chinese family were enrolled. Genomic DNA was extracted from peripheral blood of enrolled subjects. The coding region of the FOXL2 gene was amplified and mutations were determined by sequencing analyses. Functional analysis was carried out to study changes in expression and transcriptional activity of the mutant FOXL2 protein. Results A novel mutation in the FOXL2 gene (c.931C > T) was detected in all five BPES patients, which converts a histidine residue into a tyrosine (p.H311Y) in the FOXL2 protein. Functional analysis revealed that this point mutation reduces FOXL2 protein expression, concomitant with decreased transcriptional activity on the steroidogenic acute regulatory (StAR) gene promotor. Conclusions Our results expand the mutational spectrum of the FOXL2 gene and provide additional insights to the research on the molecular pathogenesis of FOXL2 in BPES.http://link.springer.com/article/10.1186/s12881-018-0631-8BPESFOXL2Gene mutation |
| spellingShingle | Lu Zhou Jiaqi Wang Tailing Wang Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome BMC Medical Genetics BPES FOXL2 Gene mutation |
| title | Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome |
| title_full | Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome |
| title_fullStr | Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome |
| title_full_unstemmed | Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome |
| title_short | Functional study on new FOXL2 mutations found in Chinese patients with blepharophimosis, ptosis, epicanthus inversus syndrome |
| title_sort | functional study on new foxl2 mutations found in chinese patients with blepharophimosis ptosis epicanthus inversus syndrome |
| topic | BPES FOXL2 Gene mutation |
| url | http://link.springer.com/article/10.1186/s12881-018-0631-8 |
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