RGD Reference Report - Alterations in methylation and expression levels of imprinted genes H19 and Igf2 in the fetuses of diabetic mice. - Rat Genome Database

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Alterations in methylation and expression levels of imprinted genes H19 and Igf2 in the fetuses of diabetic mice.

Authors: Shao, WJ  Tao, LY  Gao, C  Xie, JY  Zhao, RQ 
Citation: Shao WJ, etal., Comp Med. 2008 Aug;58(4):341-6.
RGD ID: 2311511
Pubmed: PMID:18724775   (View Abstract at PubMed)
PMCID: PMC2706039   (View Article at PubMed Central)

The study aimed to reveal alterations in expression and methylation levels of the growth-related imprinted genes H19 and Igf2 in fetuses of diabetic mice. Diabetes was induced in female mice by intraperitoneal injection of streptozotocin. DNA and total RNA were extracted from fetuses obtained from diabetic and control dams on embryonic day (E) 14. Real-time RT-PCR analysis revealed that the mRNA expression of Igf2 in fetuses from diabetic mice was 0.65-fold of the control counterparts. Bisulfite genomic sequencing demonstrated that the methylation level of the H19-Igf2 imprint control region was 19.1% higher in diabetic fetuses than in those of control dams. In addition, the body weight of pups born to diabetic dams was 26.5% lower than that of the control group. The results indicate that maternal diabetes can affect fetal development by means of altered expression of imprinted genes. The modified genomic DNA methylation status of imprinting genes may account for the change in gene expression.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Experimental Diabetes Mellitus  ISOIgf2 (Mus musculus)2311511; 2311511DNA more ...RGD 
Experimental Diabetes Mellitus  IDA 2311511DNA more ...RGD 

Objects Annotated

Genes (Rattus norvegicus)
Igf2  (insulin-like growth factor 2)

Genes (Mus musculus)
Igf2  (insulin-like growth factor 2)

Genes (Homo sapiens)
IGF2  (insulin like growth factor 2)

Objects referenced in this article
Gene Igf1r insulin-like growth factor I receptor Mus musculus

Additional Information