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Updated: Feb 14, 2026

Isolation and Profiling of MicroRNA-containing Exosomes from Human Bile
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Exosomal MicroRNAs as Potential Biomarkers in Neuropsychiatric Disorders

Gabriel R Fries1, Joao Quevedo2,3,4,5

  • 1Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA. Gabriel.R.Fries@uth.tmc.edu.

Methods in Molecular Biology (Clifton, N.J.)
|February 14, 2018
PubMed

Insights

MicroRNAs in exosomes from peripheral circulation show promise as biomarkers for neuropsychiatric disorders. Novel methods can isolate neuron- and astrocyte-derived exosomes, offering brain-specific disease signatures.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Genetics

Background:

  • MicroRNAs (miRNAs) are small non-coding RNAs involved in gene regulation.
  • Exosomes are extracellular vesicles mediating intercellular communication.
  • Neuropsychiatric disorders represent a significant global health burden with unmet diagnostic needs.

Purpose of the Study:

  • To explore the potential of exosomal miRNAs as biomarkers for neuropsychiatric disorders.
  • To discuss novel methods for isolating brain-specific exosomes from peripheral circulation.
  • To investigate the role of exosomes in intergenerational transmission of behavioral traits.

Main Methods:

  • Review of current literature on miRNA biomarkers and exosome isolation techniques.
  • Discussion of novel methods for enriching neuron- and astrocyte-derived exosomes.
  • Analysis of exosomal miRNA profiles in the context of neuropsychiatric conditions.

Main Results:

  • Peripherally-isolated exosomes contain miRNAs that reflect brain states.
  • Specific miRNA signatures within exosomes may indicate the presence and progression of neuropsychiatric disorders.
  • Novel isolation techniques enhance the specificity of brain-derived exosomal biomarkers.

Conclusions:

  • Exosomal miRNAs represent a promising, non-invasive source for neuropsychiatric disorder biomarkers.
  • Targeted isolation of neuron- and astrocyte-derived exosomes can yield sensitive diagnostic signatures.
  • Further research is warranted to validate these findings and translate them into clinical practice.
Keywords:
BiomarkersEpigeneticsExosomesMicroRNANeuropsychiatryPeriphery

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