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The Neuronal Code of Inheritance

Project description

Revisiting the rules of heredity

It is now well established that inheritance involves both the transmission of genetic information as well as epigenetic traits from parents to offspring. Emerging evidence in certain nematodes indicates that certain small RNAs can also be inherited, challenging the basic concepts of genetic-based inheritance. The EU-funded RNAflashbacks project will investigate how specific small interfering RNAs made in neurons can transmit adaptive memory to progeny. Results will provide fundamental knowledge on modes of inheritance and on the type of responses that can actually be transmitted to the offspring. Researchers will also develop tools for modulating the transmission of such molecules.

Objective

Little is known about non-DNA mediated transgenerational inheritance of parental responses. If inheritance of non-genetic materials is prevalent, it could challenge our conceptions regarding the rules and limits of heredity. We are in particularly intrigued by the possibility that the nervous system can produce heritable changes. Mechanisms for propagation of responses from the soma to the germline are known. Until very recently, the possibility that any type of environmental response could become heritable, let alone somatic responses, was considered blasphemous. In C. elegans nematodes, exogenously-supplied artificial dsRNA transfers from the soma to the germline, triggering transgenerational small RNA-mediated RNA interference. It is unknown whether endogenous small RNAs can transmit specific information about the environment to the progeny. We will investigate if endogenous siRNAs, which are naturally made in somatic tissues, and in particular in neurons, produce transgenerational responses. Specifically, we will test which RNA molecules act transgenerationally, how do they mediate non-cell autonomous gene regulation, and which responses can be communicated to the progeny. What is the code that transforms particular environmental responses to specific arsenals of heritable RNA molecules? We will answer these questions, and moreover study the implications that this completely new form of hereditary has for the offspring’s survival. Can heritable small RNAs retain adaptive memory? Not only will we elucidate natural transmission of the parents’ activity from generation-to-generation, we will moreover devise means to control these mechanisms. We will engineer tools to diagnose, erase, maintain, and modulate the heritable effects, which would be important for basic research and hopefully also translational in the future.

Fields of science (EuroSciVoc)

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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ERC-COG - Consolidator Grant

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Call for proposal

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(opens in new window) ERC-2018-COG

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Host institution

TEL AVIV UNIVERSITY
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 000 000,00
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 000 000,00

Beneficiaries (1)

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