Author(s): Bhavna Dwivedi, P. K. Mishra, S. K. Mishra

Email(s): bhavna18.bt@gmail.com

DOI: Not Available

Address: Bhavna Dwivedi2, P. K. Mishra1, S. K. Mishra2
1Bhopal Memorial Hospital and Research Centre, Bhopal
2Department of Biotechnology, Govt. New Science College, Rewa 486491 (MP)
*Corresponding Author

Published In:   Volume - 6,      Issue - 2,     Year - 2014


ABSTRACT:
Living cells sometimes encounter continuous or accidental exposure of genotoxic agents which misbalances the integrity of subcellular components. DNA damage by these genotoxic agents initiates various cellular responses. These cellular responses include sensors, transducers and effectors. Sensor protein act at the frontline of the DNA response mechanism. The transducer amplifies the intracellular signals to the down stream regulatory molecules. Then the effector molecules progresses towards the execution of cell cycle arrest, DNA repair or apoptosis. The most important sensor proteins are ATM and ATR. One of the most imperative substrate that is phosphorylated by these protein kinases is ?-H2AX which is a vital component for nuclear foci formation to execute DNA repair mechanisms. This complete process is under tight regulation and any imbalance in these processes may lead to hypersensitivity to cellular stress and susceptibility to DNA damage, genomic effects and resistance to apoptosis, thus initiating the cascade of carcinogenesis. There are various agents that modifies DNA molecule, for example; environmental isocyanates and their derivatives that have capability to cause toxicogenomic effects. Isocyanates are thus becoming of interest in the field of genetic toxicology as they may react with DNA to produce DNA damage.


Cite this article:
Bhavna Dwivedi, P. K. Mishra, S. K. Mishra. Quantitative Analysis of ATM, ATR and γ-H2AX as DNA Damage Sensor Proteins through Western Blotting. Research J. Science and Tech. 6(2): April- June 2014; Page 91-94.


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