Paternally induced transgenerational inheritance of susceptibility to diabetes in mammals.

Abstract

The global prevalence of prediabetes and type 2 diabetes (T2D) is increasing, and it is contributing to the susceptibility to diabetes and its related epidemic in offspring. Although the impacts of paternal impaired fasting blood glucose and glucose intolerance on the metabolism of offspring have been well established, the exact molecular and mechanistic basis that mediates these impacts remains largely unclear. Here we show that paternal prediabetes increases the susceptibility to diabetes in offspring through gametic epigenetic alterations. In our findings, paternal prediabetes led to glucose intolerance and insulin resistance in offspring. Relative to controls, offspring of prediabetic fathers exhibited altered gene expression patterns in the pancreatic islets, with down-regulation of several genes involved in glucose metabolism and insulin signaling pathways. Epigenomic profiling of offspring pancreatic islets revealed numerous changes in cytosine methylation depending on paternal prediabetes, including reproducible changes in methylation over several insulin signaling genes. Paternal prediabetes altered overall methylome patterns in sperm, with a large portion of differentially methylated genes overlapping with that of pancreatic islets in offspring. Our study uniquely revealed that prediabetes can be inherited transgenerationally through the mammalian germ line by an epigenetic mechanism.

• Authors: Yanchang Wei, Cai-Rong Yang, Yan-Ping Wei, Zhen-Ao Zhao, Yi Hou, Heide Schatten, Qing-Yuan Sun
• Journal: Proceedings of the National Academy of Sciences of the United States of America (Proc Natl Acad Sci U S A) Vol. 111 Issue 5 Pg. 1873-8 (Feb 04 2014) ISSN: 1091-6490 [Electronic] United States
• PMID: 24449870 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Insulin
• Streptozocin

Topics

• Animals
• Blastocyst (metabolism)
• Crosses, Genetic
• DNA Methylation (genetics)
• Diabetes Mellitus (genetics)
• Epigenesis, Genetic
• Fathers
• Female
• Genetic Predisposition to Disease
• Glucose Intolerance (genetics)
• Inheritance Patterns (genetics)
• Insulin (metabolism)
• Insulin Resistance (genetics)
• Islets of Langerhans (metabolism, pathology)
• Male
• Mammals (genetics)
• Prediabetic State (genetics)
• Signal Transduction (genetics)
• Spermatozoa (metabolism)
• Streptozocin