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A differential proteomics study of cerebrospinal fluid from individuals with Niemann-Pick disease, Type C1.

Wenping LiMelissa R PergandeChristopher A CrutchfieldBrian C SearlePeter S BacklundJaqueline A PicacheKathryn BurkertNicole M Yanjanin-FarhatPaul S BlankCynthia L TothChristopher A WassifForbes D PorterStephanie M Cologna
Published in: Proteomics (2023)
Niemann-Pick, type C1 (NPC1) is a fatal, neurodegenerative disease, which belongs to the family of lysosomal diseases. In NPC1, endo/lysosomal accumulation of unesterified cholesterol and sphingolipids arise from improper intracellular trafficking resulting in multi-organ dysfunction. With the proximity between the brain and cerebrospinal fluid (CSF), performing differential proteomics provides a means to shed light to changes occurring in the brain. In this study, CSF samples obtained from NPC1 individuals and unaffected controls were used for protein biomarker identification. A subset of these individuals with NPC1 are being treated with miglustat, a glycosphingolipid synthesis inhibitor. Of the 300 identified proteins, 71 proteins were altered in individuals with NPC1 compared to controls including cathepsin D, and members of the complement family. Included are a report of 10 potential markers for monitoring therapeutic treatment. We observed that pro-neuropeptide Y (NPY) was significantly increased in NPC1 individuals relative to healthy controls; however, individuals treated with miglustat displayed levels comparable to healthy controls. In further investigation, NPY levels in a NPC1 mouse model corroborated our findings. We posit that NPY could be a potential therapeutic target for NPC1 due to its multiple roles in the central nervous system such as attenuating neuroinflammation and reducing excitotoxicity.
Keyphrases
  • cerebrospinal fluid
  • mouse model
  • mass spectrometry
  • white matter
  • traumatic brain injury
  • risk assessment
  • resting state
  • multiple sclerosis
  • climate change
  • cerebral ischemia
  • low density lipoprotein