Journal of Clinical Medicine (Apr 2023)

Comparative Transcriptomic Analysis of Archival Human Vestibular Schwannoma Tissue from Patients with and without Tinnitus

  • Krishna Bommakanti,
  • Richard Seist,
  • Phanidhar Kukutla,
  • Murat Cetinbas,
  • Shelley Batts,
  • Ruslan I. Sadreyev,
  • Anat Stemmer-Rachamimov,
  • Gary J. Brenner,
  • Konstantina M. Stankovic

DOI
https://doi.org/10.3390/jcm12072642
Journal volume & issue
Vol. 12, no. 7
p. 2642

Abstract

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Vestibular schwannoma (VS) is an intracranial tumor that commonly presents with tinnitus and hearing loss. To uncover the molecular mechanisms underlying VS-associated tinnitus, we applied next-generation sequencing (Illumina HiSeq) to formalin-fixed paraffin-embedded archival VS samples from nine patients with tinnitus (VS-Tin) and seven patients without tinnitus (VS-NoTin). Bioinformatic analysis was used to detect differentially expressed genes (DEG; i.e., ≥two-fold change [FC]) while correcting for multiple comparisons. Using RNA-seq analysis, VS-Tin had significantly lower expression of GFAP (logFC = −3.04), APLNR (logFC = −2.95), PREX2 (logFC = −1.44), and PLVAP (logFC = −1.04; all p MMP9, CXCL9, IL16, PF4, ITK, and ACVR2A genes. Future studies are needed to examine the importance of these candidates and of inflammation in VS-associated tinnitus.

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