The impact of SBF2 on taxane-induced peripheral neuropathy

PLoS Genet. 2022 Jan 5;18(1):e1009968. doi: 10.1371/journal.pgen.1009968. eCollection 2022 Jan.

Abstract

Taxane-induced peripheral neuropathy (TIPN) is a devastating survivorship issue for many cancer patients. In addition to its impact on quality of life, this toxicity may lead to dose reductions or treatment discontinuation, adversely impacting survival outcomes and leading to health disparities in African Americans (AA). Our lab has previously identified deleterious mutations in SET-Binding Factor 2 (SBF2) that significantly associated with severe TIPN in AA patients. Here, we demonstrate the impact of SBF2 on taxane-induced neuronal damage using an ex vivo model of SBF2 knockdown of induced pluripotent stem cell-derived sensory neurons. Knockdown of SBF2 exacerbated paclitaxel changes to cell viability and neurite outgrowth while attenuating paclitaxel-induced sodium current inhibition. Our studies identified paclitaxel-induced expression changes specific to mature sensory neurons and revealed candidate genes involved in the exacerbation of paclitaxel-induced phenotypes accompanying SBF2 knockdown. Overall, these findings provide ex vivo support for the impact of SBF2 on the development of TIPN and shed light on the potential pathways involved.

MeSH terms

  • Black or African American / genetics
  • Cell Survival / drug effects
  • Disease Progression
  • Female
  • Gene Knockdown Techniques
  • Humans
  • Induced Pluripotent Stem Cells / chemistry
  • Induced Pluripotent Stem Cells / cytology
  • Induced Pluripotent Stem Cells / drug effects
  • Paclitaxel / adverse effects*
  • Paclitaxel / pharmacology
  • Peripheral Nervous System Diseases / chemically induced
  • Peripheral Nervous System Diseases / ethnology
  • Peripheral Nervous System Diseases / genetics*
  • Polymorphism, Single Nucleotide*
  • Protein Tyrosine Phosphatases, Non-Receptor / genetics*
  • Quality of Life
  • Sensory Receptor Cells / chemistry
  • Sensory Receptor Cells / cytology*
  • Sensory Receptor Cells / drug effects
  • Sequence Analysis, RNA
  • Single-Cell Analysis
  • White People / genetics

Substances

  • Protein Tyrosine Phosphatases, Non-Receptor
  • SBF2 protein, human
  • Paclitaxel