Transcriptomic approach predicts a major role for transforming growth factor beta type 1 pathway in L-Dopa-induced dyskinesia in parkinsonian rats

Shetty Ravi Dyavar, Lisa F. Potts, Goichi Beck, Bhagya Laxmi Dyavar Shetty, Benton Lawson, Anthony T. Podany, Courtney V. Fletcher, Rama Rao Amara, Stella M. Papa

Research output: Contribution to journalArticlepeer-review

Abstract

Dyskinesia induced by long-term L-Dopa (LID) therapy in Parkinson disease is associated with altered striatal function whose molecular bases remain unclear. Here, a transcriptomic approach was applied for comprehensive analysis of distinctively regulated genes in striatal tissue, their specific pathways, and functional- and disease-associated networks in a rodent model of LID. This approach has identified transforming growth factor beta type 1 (TGFβ1) as a highly upregulated gene in dyskinetic animals. TGFβ1 pathway is a top aberrantly regulated pathway in the striatum following LID development based on differentially expressed genes (> 1.5 fold change and P < 0.05). The induction of TGFβ1 pathway specific genes, TGFβ1, INHBA, AMHR2 and PMEPA1 was also associated with regulation of NPTX2, PDP1, SCG2, SYNPR, TAC1, TH, TNNT1 genes. Transcriptional network and upstream regulator analyses have identified AKT-centered functional and ERK-centered disease networks revealing the association of TGFβ1, IL-1β and TNFα with LID development. Therefore, results support that TGFβ1 pathway is a major contributor to the pathogenic mechanisms of LID.

Original languageEnglish (US)
Article numbere12690
JournalGenes, Brain and Behavior
Volume19
Issue number8
DOIs
StatePublished - Nov 1 2020

Keywords

  • IL-1β
  • INHBa
  • L-Dopa-induced dyskinesia
  • NMU
  • Parkinson disease
  • TAC1
  • TGFβ1
  • TNFα
  • inflammation

ASJC Scopus subject areas

  • Genetics
  • Neurology
  • Behavioral Neuroscience

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