The Kadar Family Award granted to Professor Oded Rechavi from the School of Neurobiology, Biochemistry and Biophysics

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The Kadar Award is granted annually to four TAU researchers, two senior and two junior faculty members, from across the spectrum of faculties and disciplines at TAU.

 The Kadar Family Award for Outstanding Research at Tel Aviv University celebrates pioneering scientists and scholars who have reached the highest levels of excellence in both research and teaching. The Kadar Award is granted annually to four TAU researchers, two senior and two junior faculty members, from across the spectrum of faculties and disciplines at TAU.  One of the recipients of the 2019 award for junior faculty is Prof. Oded Rechavi from the School of Neurobiology, Biochemistry and Biophysics. 

Oded Rechavi’s work uncovers novel mechanisms of inheritance – he has shown that in C.elegans nematodes environmental challenges can change the next generation without affecting the DNA sequence. The idea that stress could produce adaptive responses which transmit to the next generations was heretic for over 200 years, and no biological mechanism had been found to mediate non-DNA-based inheritance. Prof. Rechavi demonstrated that instead of inheritance being carried by changes to the DNA, other molecules (small RNAs) could mediate a type of transgenerational inheritance, which obeys different rules. He has shown that this mechanism can regulate genes across generations, and that this provides nematodes with a method to “memorize” natural experiences such as starvation and viral infections. Rechavi’s group has gone on to elucidate the rules that determine which epigenetic responses will be inherited, and for how many generations each response could last. He has identified the genes involved in regulating this pathway, including the enzymes which perpetuate inheritance of small RNAs (such as RNA-dependent RNA polymerases), and the factors that “erase” these responses (such as the MET-2 histone methyltransferase). These studies can help us to understand how complex traits and diseases are inherited – a first step towards treatments for many diseases where causative genes have not been identified. Taken together, this body of work represents a paradigm shift that will ripple through the fields of evolutionary biology, genetics, developmental biology, and social science.

 

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