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Linköping Studies in Science and Technology

Dissertation No. 1320

Modeling Amyloid

Disease in

Drosophila melanogaster

Department of Physics, Chemistry and Biology

Linköping University, SE-581 83

Linköping 2010

Ina Berg

Ina Berg Modeling Amyloid Disease in Drosophila

melanogaster 2010

Amyloid diseases are caused by protein misfolding and aggregation. To date there are 27 known proteins causing amyloid disorders involving brain and peripheral protein deposition. The proteins involved in this mechanism do not share sequence homology, but the amyloid fibrils share biophysical properties and possibly a common pathogenic mechanism. Amyloid deposits are known to be involved in a broad range of neurodegenerative diseases, such as Alzheimer’s disease and Creutzfeldt-Jakob disease, as well as in non-neuropathic diseases, such as senile systemic amyloidosis and type II diabetes. During the last decade the

fruit fly, Drosophila melanogaster (Drosophila), have increasingly been used as a model for neurodegenerative disease, such as Alzheimer’s disease, Huntington’s disease, amyotrophic lateral sclerosis, and familial amyloidotic polyneuropathy. The advantages of using the

Drosophila model are the well-defined genetic

characteristics, the quantity, short life span, simplicity in genetic manipulation and the powerful binary UAS-Gal4 transgenic system. The UAS-Gal4 system allows for rapid generation of individual strains in which expression of a specific gene of interest can be directed to different tissues or cell types. The system allows the target gene to be activated in different cell- and tissue-types by altering the activator-expressing lines.

This thesis has been focused on modeling amyloid diseases in

Drosophila. This has been performed by:

• Creating new model systems of senile systemic amyloidosis and familial amyloidotic polyneuropathy in Drosophila

• Developing a new staining protocol for detection of amyloid in

Drosophila

• Initiate a compound screen of Alzheimer’s disease modeled in

(2)

Linköping Studies in Science and Technology

Dissertation No. 1320

Modeling Amyloid

Disease in

Drosophila melanogaster

Department of Physics, Chemistry and Biology

Linköping University, SE-581 83

Linköping 2010

Ina Berg

Ina Berg Modeling Amyloid Disease in Drosophila

melanogaster 2010

Amyloid diseases are caused by protein misfolding and aggregation. To date there are 27 known proteins causing amyloid disorders involving brain and peripheral protein deposition. The proteins involved in this mechanism do not share sequence homology, but the amyloid fibrils share biophysical properties and possibly a common pathogenic mechanism. Amyloid deposits are known to be involved in a broad range of neurodegenerative diseases, such as Alzheimer’s disease and Creutzfeldt-Jakob disease, as well as in non-neuropathic diseases, such as senile systemic amyloidosis and type II diabetes. During the last decade the

fruit fly, Drosophila melanogaster (Drosophila), have increasingly been used as a model for neurodegenerative disease, such as Alzheimer’s disease, Huntington’s disease, amyotrophic lateral sclerosis, and familial amyloidotic polyneuropathy. The advantages of using the

Drosophila model are the well-defined genetic

characteristics, the quantity, short life span, simplicity in genetic manipulation and the powerful binary UAS-Gal4 transgenic system. The UAS-Gal4 system allows for rapid generation of individual strains in which expression of a specific gene of interest can be directed to different tissues or cell types. The system allows the target gene to be activated in different cell- and tissue-types by altering the activator-expressing lines.

This thesis has been focused on modeling amyloid diseases in

Drosophila. This has been performed by:

• Creating new model systems of senile systemic amyloidosis and familial amyloidotic polyneuropathy in Drosophila

• Developing a new staining protocol for detection of amyloid in

Drosophila

• Initiate a compound screen of Alzheimer’s disease modeled in

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