Identification of novel genes that modify phenotypes induced by Alzheimer's β-amyloid overexpression in Drosophila

Weihuan Cao, Ho Juhn Song, Tina Gangi, Anju Kelkar, Isha Antani, Dan Garza, Mary Konsolaki

Research output: Contribution to journalArticlepeer-review

82 Scopus citations


Sustained increases in life expectancy have underscored the importance of managing diseases with a high incidence in late life, such as various neurodegenerative conditions. Alzheimer's disease (AD) is the most common among these, and consequently significant research effort is spent on studying it. Although a lot is known about the pathology of AD and the role of β-amyloid (Aβ) peptides, the complete network of interactions regulating Aβ metabolism and toxicity still eludes us. To address this, we have conducted genetic interaction screens using transgenic Drosophila expressing Aβ and we have identified mutations that affect Aβ metabolism and toxicity. These analyses highlight the involvement of various biochemical processes such as secretion, cholesterol homeostasis, and regulation of chromatin structure and function, among others, in mediating toxic Aβ effects. Several of the mutations that we identified have not been linked to Aβ toxicity before and thus constitute novel potential targets for AD intervention. We additionally tested these mutations for interactions with tau and expanded-polyglutamine overexpression and found a few candidate mutations that may mediate common mechanisms of neurodegeneration. Our data offer insight into the toxicity of Aβ and open new areas for further study into AD pathogenesis.

Original languageEnglish (US)
Pages (from-to)1457-1471
Number of pages15
Issue number3
StatePublished - Mar 2008

All Science Journal Classification (ASJC) codes

  • General Medicine


Dive into the research topics of 'Identification of novel genes that modify phenotypes induced by Alzheimer's β-amyloid overexpression in Drosophila'. Together they form a unique fingerprint.

Cite this