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- W2210213892 abstract "Background: Leber congenital amaurosis (LCA) is an autosomal recessive retinal disorder, characterized by an early-onset visual loss, amaurotic pupils, and retinal degeneration. Only a few studies have been described about Indonesian LCA patients. Pre-clinical studies have shown that antisense oligonucleotide (AON) restored the aberrant splicing caused by a recurrent intronic mutation in the CEP290 gene. This study combined diagnostic study in Indonesian LCA patients and in-vitro AON-based therapy for LCA. Methods: CEP290, CRB1, GUCY2D, and AIPL1 genes were screened in 4 LCA patients from 3 unrelated families by amplification refractory mutation system (ARMS) PCR or Sanger sequencing. Meanwhile, 29 different AONs (GT1 to GT29) with two chemistries were designed and tested by RT-PCR, Western blot, and immunocytochemistry. Results: Three variants were found in AIPL1 gene: p.E318G, p.R324R, and p.G11G. Interestingly, p.E318G was predicted as a disease causing mutation by MutationTaster program while p.R324R and p.G11G were predicted to cause a splicing alteration by ESE-finder splicing prediction. On the other hand, from 29 AON tested in this study, 4 AONs worked efficiently in correcting the aberrant splicing, increasing the CEP290 protein, and restoring the cilium length, at low concentrations. Conclusions: The molecular genetic analysis of Indonesian LCA patients in this study revealed three new candidate variants as a LCA causative mutation in AIPL1: p.E318G, p.R324R, and p.G11G. From 29 AONs tested in this study, GT2, GT3, and GT4 were the most efficient. Remarkably, these AONs shared the same chemical modification. Keywords: Leber congenital amaurosis, splicing mutation, antisense oligonucleotide, CEP290" @default.
- W2210213892 created "2016-06-24" @default.
- W2210213892 creator A5071694396 @default.
- W2210213892 date "2015-01-01" @default.
- W2210213892 modified "2023-09-26" @default.
- W2210213892 title "MOLECULAR ANALYSIS OF INDONESIAN LCA PATIENTS AND IN VITRO SPLICE CORRECTION FOR CEP290-ASSOCIATED LCA" @default.
- W2210213892 hasPublicationYear "2015" @default.
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