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2015 Fiscal Year Final Research Report

Analysis of the mechanisms by which the extracellular dsRNA systemically spreads.

Research Project

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Project/Area Number 26891023
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Functional biochemistry
Research InstitutionTokyo Women's Medical University

Principal Investigator

Dejima Katsufumi  東京女子医科大学, 医学部, 助教 (60457439)

Project Period (FY) 2014-08-29 – 2016-03-31
Keywords全身性RNAi
Outline of Final Research Achievements

In C. elegans, dsRNA can systemically spread throughout the animal and lead to non-cell autonomous RNAi in cells distinct from the cells where dsRNA is originally introduced. This RNA silencing phenomenon is called the “systemic RNAi”. Systemic RNAi is thought to largely depend on vesicle transport because clathrin-dependent endocytosis and several proteins that localize endomembrane systems have been shown to be involved in systemic RNAi. However, underlying molecular mechanisms by which dsRNA is secreted to the extracellular space and enters into cells still unclear. To identify new factors that is involved in systemic dsRNA spread, genetic screening in which a strain defective in systemic RNAi restores RNAi ability was performed using C. elegans. One of the causal genes of the mutants was identified and analyzed.

Free Research Field

生物学

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Published: 2017-05-10  

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