Higher vulnerability and stress sensitivity of neuronal precursor cells carrying an alpha-synuclein gene triplication

Adrian Flierl, Luís M.A. Oliveira, Lisro J. Falomir-Lockhart, Sally K. Mak, Jayne Hesley, Frank Soldner, Donna J. Arndt-Jovin, Rudolf Jaenisch, J. William Langston, Thomas M. Jovin, Birgitt Schu Le

Research output: Contribution to journalArticle

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Abstract

Parkinson disease (PD) is a multi-factorial neurodegenerative disorder with loss of dopaminergic neurons in the substantia nigra and characteristic intracellular inclusions, called Lewy bodies. Genetic predisposition, such as point mutations and copy number variants of the SNCA gene locus can cause very similar PD-like neurodegeneration. The impact of altered asynuclein protein expression on integrity and developmental potential of neuronal stem cells is largely unexplored, but may have wide ranging implications for PD manifestation and disease progression. Here, we investigated if induced pluripotent stem cell-derived neuronal precursor cells (NPCs) from a patient with Parkinson's disease carrying a genomic triplication of the SNCA gene (SNCA-Tri). Our goal was to determine if these cells these neuronal precursor cells already display pathological changes and impaired cellular function that would likely predispose them when differentiated to neurodegeneration. To achieve this aim, we assessed viability and cellular physiology in human SNCA-Tri NPCs both under normal and environmentally stressed conditions to model in vitro gene-environment interactions which may play a role in the initiation and progression of PD. Human SNCA-Tri NPCs displayed overall normal cellular and mitochondrial morphology, but showed substantial changes in growth, viability, cellular energy metabolism and stress resistance especially when challenged by starvation or toxicant challenge. Knockdown of α-synuclein in the SNCA-Tri NPCs by stably expressed short hairpin RNA (shRNA) resulted in reversal of the observed phenotypic changes. These data show for the first time that genetic alterations such as the SNCA gene triplication set the stage for decreased developmental fitness, accelerated aging, and increased neuronal cell loss. The observation of this ''stem cell pathology'' could have a great impact on both quality and quantity of neuronal networks and could provide a powerful new tool for development of neuroprotective strategies for PD.

Original languageEnglish (US)
Article numbere112413
JournalPloS one
Volume9
Issue number11
DOIs
StatePublished - Nov 12 2014
Externally publishedYes

Fingerprint

alpha-Synuclein
Parkinson disease
Genes
Parkinson Disease
Stem cells
genes
neurons
cells
stem cells
viability
human physiology
Stem Cells
Synucleins
genotype-environment interaction
Lewy Bodies
Induced Pluripotent Stem Cells
neurodegenerative diseases
Gene-Environment Interaction
point mutation
small interfering RNA

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Flierl, A., Oliveira, L. M. A., Falomir-Lockhart, L. J., Mak, S. K., Hesley, J., Soldner, F., ... Le, B. S. (2014). Higher vulnerability and stress sensitivity of neuronal precursor cells carrying an alpha-synuclein gene triplication. PloS one, 9(11), [e112413]. https://doi.org/10.1371/journal.pone.0112413

Higher vulnerability and stress sensitivity of neuronal precursor cells carrying an alpha-synuclein gene triplication. / Flierl, Adrian; Oliveira, Luís M.A.; Falomir-Lockhart, Lisro J.; Mak, Sally K.; Hesley, Jayne; Soldner, Frank; Arndt-Jovin, Donna J.; Jaenisch, Rudolf; Langston, J. William; Jovin, Thomas M.; Le, Birgitt Schu.

In: PloS one, Vol. 9, No. 11, e112413, 12.11.2014.

Research output: Contribution to journalArticle

Flierl, A, Oliveira, LMA, Falomir-Lockhart, LJ, Mak, SK, Hesley, J, Soldner, F, Arndt-Jovin, DJ, Jaenisch, R, Langston, JW, Jovin, TM & Le, BS 2014, 'Higher vulnerability and stress sensitivity of neuronal precursor cells carrying an alpha-synuclein gene triplication', PloS one, vol. 9, no. 11, e112413. https://doi.org/10.1371/journal.pone.0112413
Flierl, Adrian ; Oliveira, Luís M.A. ; Falomir-Lockhart, Lisro J. ; Mak, Sally K. ; Hesley, Jayne ; Soldner, Frank ; Arndt-Jovin, Donna J. ; Jaenisch, Rudolf ; Langston, J. William ; Jovin, Thomas M. ; Le, Birgitt Schu. / Higher vulnerability and stress sensitivity of neuronal precursor cells carrying an alpha-synuclein gene triplication. In: PloS one. 2014 ; Vol. 9, No. 11.
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