Functional and molecular early enteric biomarkers for Parkinson's disease in mice and men
Gudrun A. Rappold,
Michael D. Menger,
Matthias W. Laschke,
Posted 08 Jun 2020
bioRxiv DOI: 10.1101/2020.06.06.136556
Posted 08 Jun 2020
Parkinson`s disease (PD) usually has a late clinical onset. The lack of early biomarkers for the disease represents a major challenge for developing timely treatment interventions. Here, we use an alpha-synuclein-overexpressing transgenic (Th-1-SNCA-A30P) mouse model of PD to identify appropriate candidate markers in the gut for early stages of PD before hallmark symptoms begin to manifest. A30P mice did not show alterations in gait parameters at 2 months of age, and these mice were therefore defined as pre-symptomatic A30P mice (psA30P). We discovered early functional motility changes in the gut and early molecular dysregulations in the myenteric plexus of psA30P mice by comparative protein and miRNA profiling and cell culture experiments. We found that the proteins neurofilament light chain, vesicle-associated membrane protein 2 and calbindin 2, together with the miRNAs that regulate them, are potential biomarkers of early PD that may facilitate timely treatment and/or prevention of PD in men. ### Competing Interest Statement Markus Britschgi is a full-time employee at Roche and may additionally hold Roche stock/stock options.
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