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Published on: February 14, 2016
TIP60 contributes to porcine embryonic development by regulating DNA damage response
Jing Guo1, Wenjun Zhou2, Ying-Jie Niu2
1Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea; State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin 150069, China.
The study found that inhibiting TIP60 (also known as Kat5) impairs early embryonic development in pigs. This occurs due to increased DNA damage and reduced DNA repair efficiency, impacting cell survival pathways.
Area of Science:
- Epigenetics and Developmental Biology
- Molecular Biology
- Cellular Biology
Background:
- TIP60 (Kat5) is a MYST family histone acetyltransferase involved in critical cellular processes.
- Its role in early embryonic development, particularly in pigs, remains largely unexplored.
- Understanding TIP60's function is crucial for reproductive biology and developmental research.
Purpose of the Study:
- To investigate the function of TIP60 in porcine parthenogenetic embryonic development.
- To elucidate the underlying molecular mechanisms by which TIP60 influences embryonic development.
Main Methods:
- Utilized a specific TIP60 inhibitor in porcine parthenogenetic embryos.
- Assessed embryonic development, DNA damage markers (γH2A), p53-p21 pathway, DNA repair proteins (53BP1), and autophagy markers (LC3).
Main Results:
- TIP60 inhibition significantly impaired porcine parthenogenetic embryonic development.
- Inhibition led to increased reactive oxygen species (ROS)-induced DNA damage and reduced DNA repair efficiency.
- TIP60 inhibition modulated the p53-p21 pathway and affected 53BP1-dependent DNA repair.
- Autophagy (LC3) was increased in response to TIP60 inhibition.
Conclusions:
- TIP60 is essential for early porcine parthenogenetic embryonic development.
- TIP60 regulates embryonic development by managing DNA damage and repair processes.
- The findings highlight TIP60's critical role in maintaining genomic stability during early development.
