An intronic LINE-1 insertion in MERTK is strongly associated with retinopathy in Swedish Vallhund dogs
Publication Date
August 16, 2017
Authors
Richard Everson, Louise Pettitt, Oliver P. Forman, Olivia Dower Tylee, et al
Volume
12
Issue
8
Pages
e0183021
DOI
https://dx.plos.org/10.1371/journal.pone.0183021
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0183021
Scopus
85027716223
Mendeley
http://www.mendeley.com/research/intronic-line1-insertion-mertk-strongly-associated-retinopathy-swedish-vallhund-dogs
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Mendeley | Further Information

{"title"=>"An intronic LINE-1 insertion in MERTK is strongly associated with retinopathy in Swedish Vallhund dogs", "type"=>"journal", "authors"=>[{"first_name"=>"Richard", "last_name"=>"Everson", "scopus_author_id"=>"57195391606"}, {"first_name"=>"Louise", "last_name"=>"Pettitt", "scopus_author_id"=>"14319395600"}, {"first_name"=>"Oliver P.", "last_name"=>"Forman", "scopus_author_id"=>"9742818200"}, {"first_name"=>"Olivia", "last_name"=>"Dower-Tylee", "scopus_author_id"=>"57195392177"}, {"first_name"=>"Bryan", "last_name"=>"McLaughlin", "scopus_author_id"=>"20734862800"}, {"first_name"=>"Saija", "last_name"=>"Ahonen", "scopus_author_id"=>"6603360752"}, {"first_name"=>"Maria", "last_name"=>"Kaukonen", "scopus_author_id"=>"56418279000"}, {"first_name"=>"András M.", "last_name"=>"Komáromy", "scopus_author_id"=>"7004884732"}, {"first_name"=>"Hannes", "last_name"=>"Lohi", "scopus_author_id"=>"56847243000"}, {"first_name"=>"Cathryn S.", "last_name"=>"Mellersh", "scopus_author_id"=>"35502197800"}, {"first_name"=>"Jane", "last_name"=>"Sansom", "scopus_author_id"=>"7006157301"}, {"first_name"=>"Sally L.", "last_name"=>"Ricketts", "scopus_author_id"=>"35112464100"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-85027716223", "isbn"=>"1111111111", "doi"=>"10.1371/journal.pone.0183021", "pui"=>"617792324", "sgr"=>"85027716223", "issn"=>"19326203", "pmid"=>"28813472"}, "id"=>"a4847376-2d84-304f-9ff6-9a60499ae998", "abstract"=>"The domestic dog segregates a significant number of inherited progressive retinal diseases, several of which mirror human retinal diseases and which are collectively termed progressive retinal atrophy (PRA). In 2014, a novel form of PRA was reported in the Swedish Vallhund breed, and the disease was mapped to canine chromosome 17. The causal mutation was not identified, but expression analyses of the retinas of affected Vallhunds demonstrated a 6-fold increased expression of the MERTK gene compared to unaffected dogs. Using 24 retinopathy cases and 97 controls with no clinical signs of retinopathy, we replicated the chromosome 17 association in Swedish Vallhunds from the UK and aimed to elucidate the causal variant underlying this association using whole genome sequencing (WGS) of an affected dog. This revealed a 6-8 kb insertion in intron 1 of MERTK that was not present in WGS of 49 dogs of other breeds. Sequencing and BLASTN analysis of the inserted segment was consistent with the insertion comprising a full-length intact LINE-1 retroelement. Testing of the LINE-1 insertion for association with retinopathy in the UK set of 24 cases and 97 controls revealed a strong statistical association (P-value 6.0 x 10-11) that was subsequently replicated in the original Finnish study set (49 cases and 89 controls (P-value 4.3 x 10-19). In a pooled analysis of both studies (73 cases and 186 controls), the LINE-1 insertion was associated with a ~20-fold increased risk of retinopathy (odds ratio 23.41, 95% confidence intervals 10.99-49.86, P-value 1.3 x 10-27). Our study adds further support for regulatory disruption of MERTK in Swedish Vallhund retinopathy; however, further work is required to establish a functional overexpression model. Future work to characterise the mechanism by which this intronic mutation disrupts gene regulation will further improve the understanding of MERTK biology and its role in retinal function.", "link"=>"http://www.mendeley.com/research/intronic-line1-insertion-mertk-strongly-associated-retinopathy-swedish-vallhund-dogs", "reader_count"=>8, "reader_count_by_academic_status"=>{"Librarian"=>1, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>1, "Student > Master"=>1, "Other"=>2, "Student > Bachelor"=>1}, "reader_count_by_user_role"=>{"Librarian"=>1, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>1, "Student > Master"=>1, "Other"=>2, "Student > Bachelor"=>1}, "reader_count_by_subject_area"=>{"Medicine and Dentistry"=>2, "Agricultural and Biological Sciences"=>1, "Veterinary Science and Veterinary Medicine"=>5}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>5}}, "group_count"=>1}

Scopus | Further Information

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