Transplantation of Nasal Olfactory Mucosa Mesenchymal Stem Cells Benefits Alzheimer's Disease

Mol Neurobiol. 2022 Dec;59(12):7323-7336. doi: 10.1007/s12035-022-03044-6. Epub 2022 Sep 29.

Abstract

Alzheimer's disease (AD) is a common neurodegenerative disease that contributes to 60-70% of dementia in elderly people and is currently incurable. Current treatments only relieve the symptoms of AD and slow its progression. Achieving effective neural regeneration to ameliorate cognitive impairment is a major challenge in the treatment of AD. For the first time, we alleviated symptoms of AD in APPswe/PS1dE9 mice (hereafter referred to as AD mice) by transplantation of olfactory mucosa mesenchymal stem cells (OM-MSCs). Our study demonstrated that OM-MSC transplantation promotes amyloid-β (Aβ) clearance, downregulates the inflammatory response, and increases the M2/M1 ratio; OM-MSCs promote the conversion of BV2 (microglia) from M1 to M2 and also Aβ clearance in SH-SY5YAPPswe (AD cell model). OM-MSC-transplanted AD mice show improved cognitive learning and locomotive behavior. Our study suggests that OM-MSC transplantation could alleviate the symptoms of AD and promote Aβ clearance through immunomodulation, thus demonstrating the great potential and social value of OM-MSC treatment for AD patients.

Keywords: Alzheimer’s disease; Mesenchymal stem cells; Olfactory mucosa mesenchymal stem cells; Transplantation.

MeSH terms

  • Alzheimer Disease* / therapy
  • Amyloid beta-Peptides
  • Animals
  • Disease Models, Animal
  • Humans
  • Mesenchymal Stem Cell Transplantation*
  • Mesenchymal Stem Cells*
  • Mice
  • Mice, Transgenic
  • Neuroblastoma*
  • Neurodegenerative Diseases*
  • Olfactory Mucosa

Substances

  • Amyloid beta-Peptides