Abstract
Purpose: The prevalence of low birth weight (LBW) is increased in subjects born after assisted reproduction technology (ART), and defective imprinting has frequently been identified in patients with Beckwith-Wiedermann and Angelman syndromes conceived by ART. Thus, we examined methylation pattern in a girl born after ART who had Silver-Russell syndrome (SRS) which can be caused by maternal uniparental disomy for chromosome 7 and by hypomethylation of the differentially methylated region (DMR) of H19.
Methods: We examined methylation status of 31 cytosines at the CpG dinucleotides in the DMR of PEG1/MEST on 7q32.2 and 23 cytosines at the CpG dinucleotides in the DMR of H19 on 11p15, using leukocyte genomic DNA.
Results: Eight of the 31 cytosines in the patient and four of the 31 cytosines in the father were hypermethylated in the PEG1/MEST-DMR. In the H19-DMR, no abnormal methylation pattern was identified in the patient.
Conclusion: The results suggest that hypermethylation of paternally expressed genes including PEG1/MEST, which usually have growth-promoting effects, may be relevant to LBW in subjects conceived by ART.
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This work was supported by a grant for Child Health and Development (17C-2) and a grant for Research on Children and Families from the Ministry of Health, Labor, and Welfare.
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Partial hypermethylation was identified at the differentially methylated region of paternally expressed PEG1/MEST in a girl with Silver-Russell syndrome born after in vitro fertilization.
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Kagami, M., Nagai, T., Fukami, M. et al. Silver-Russell syndrome in a girl born after in vitro fertilization: partial hypermethylation at the differentially methylated region of PEG1/MEST . J Assist Reprod Genet 24, 131–136 (2007). https://doi.org/10.1007/s10815-006-9096-3
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DOI: https://doi.org/10.1007/s10815-006-9096-3