Multi-omic analyses 1 in Abyssinian cats with primary renal amyloid deposits

ABSTRACT: The amyloidoses constitute a group of diseases occurring in humans and animals that are characterized by abnormal deposits of aggregated proteins in organs, affecting their structure and function. In the Abyssinian cat breed, a familial form of renal amyloidosis has been described. In this study, multi-omics analyses were applied and integrated to explore some aspects of the unknown pathogenetic processes in cats. Whole-genome sequences of two affected Abyssinians and 195 controls of other breeds (part of the 99 Lives initiative) were screened to prioritize potential disease-associated variants. Proteome and miRNAome from formalin-fixed paraffin-embedded kidney specimens of fully necropsied Abyssinian cats, three affected and three non-amyloidosis affected were characterized. While the trigger of the disorder remains unclear, overall, i) 35,960 genomic variants were detected; ii) 215 and 56 proteins were identified as exclusive or overexpressed in the affected and control kidneys, respectively; iii) 60 miRNAs were differentially expressed, 20 of which are newly described. With omics data integration, the general conclusions are:i) the familial amyloid renal form in Abyssinians is not a simple monogenic trait ii) amyloid deposition is not triggered by mutated amyloidogenic proteins but is a mix of proteins codified by wild-type genes iii) the form is biochemically classifiable as AA amyloidosis.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Felis Catus (cat) (felis Silvestris Catus)

TISSUE(S): Kidney

SUBMITTER: Simona Nonnis  

LAB HEAD: Simona Nonnis

PROVIDER: PXD024140 | Pride | 2021-09-10

REPOSITORIES: Pride