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Basic Science and Pathogenesis.

Grace Rocco1, Henry Lin1, Kailey A Said1

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Summary
This summary is machine-generated.

Sorbs2 protein is crucial for memory formation in mice, regulating microtubule stability and gene splicing. Its dysfunction may contribute to Alzheimer's disease pathogenesis.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Sorbs2 is a cytoskeletal adaptor protein in hippocampal neurons.
  • Genetic variants in Sorbs2 are linked to delayed Alzheimer's Disease (AD) onset.
  • The precise function of Sorbs2 in neurons remains unclear.

Purpose of the Study:

  • To investigate the mechanistic role of Sorbs2 in neuronal function and memory.
  • To explore Sorbs2's potential as a neuron-specific RNA binding protein (RBP).
  • To assess the impact of Sorbs2 deficiency on learning, memory, and neurogenesis.

Main Methods:

  • Generated Sorbs2-Knockout (KO) mice for behavioral and molecular analyses.
  • Conducted spatial object recognition (SOR) and cued fear conditioning (CFC) tests.
  • Performed microtubule stability assays, synaptosome protein extractions, and RNA sequencing.

Main Results:

  • Sorbs2 KO mice exhibited impaired learning and memory in SOR and CFC tests.
  • RNA sequencing revealed Sorbs2 regulates pathways involved in microtubule stability and translation initiation.
  • Sorbs2 deficiency led to dysregulated alternative splicing, affecting translation start sites.

Conclusions:

  • Sorbs2 plays a vital role in regulating microtubule stability and alternative splicing in neurons.
  • Sorbs2 is implicated in memory formation and retrieval.
  • Developed tools to study Sorbs2 expression and its role in AD mouse models.