A stem-cell ageing hypothesis on the origin of Parkinson's disease

TL;DR

This paper proposes a novel hypothesis that Parkinson's disease may originate from defects in hematopoietic stem cell differentiation, supported by blood transcriptome analysis showing disease-related expression patterns.

Contribution

It introduces a stem-cell aging hypothesis for PD origin, linking blood cell gene expression to disease development, a new perspective in PD research.

Findings

Differential gene expression in blood cells of PD patients

Blood cells may exhibit a PD-specific expression state

Supports the hypothesis of stem cell-related origins of PD

Abstract

A transcriptome-wide blood expression dataset of Parkinson's disease (PD) patients and controls was analyzed under the hypothesis-rich mathematical framework. The analysis pointed towards differential expression in blood cells in many of the processes known or predicted to be disrupted in PD. We suggest that circulating blood cells in PD patients can be in a full-blown PD-expression state. We put forward the hypothesis that sporadic PD can originate as a case of hematopoietic stem cell/differentiation process expression program defect and suggest this research direction deserves further investigation.