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Updated: Jul 17, 2026
Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility
Published on: April 13, 2017
Microglia integrated neural spheroids enable neuroinflammatory responses and correct network dysfunction induced by
Jiajing Zhang1, Yi Wei Lim1, Angelica Medina1
1Division of Preclinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health, Rockville, MD, USA.
Abstract:
Microglia are the primary resident immune cells of the brain, playing both protective and deleterious roles in neurological diseases, which makes them an enticing therapeutic target. Here we developed a Neural Microglia Integrated Multicellular iPSC-derived Cultured Spheroids (NeuroMIMICS) system that enables measurements of both neural network activity and immune responses using human iPSC-derived microglia, astrocytes, and neurons. We validated microglia functionalities in these neural tri-cultures including phagocytic activity, directed motility, and inflammatory responses. RNAseq analysis revealed a phenotypical acquisition of immune functionality via microglia incorporation, supported by increased cytokine production in spheroids challenged with pathogen-like insults. We then demonstrated that the incorporation of healthy microglia corrected alpha-synuclein A53T-mediated dysfunctional phenotypes in the neural spheroids. This work demonstrates a unique immunocompetent functional neural model that is robust and suited for high-throughput screening, laying the groundwork for its application to accelerate the discovery of new therapeutics for neurological diseases.
Insights
Researchers created a novel human brain cell model (NeuroMIMICS) to study neurological diseases. This immunocompetent model accurately mimics brain immune cell functions and aids in discovering new therapeutics for brain disorders.
Area of Science:
- Neuroscience
- Immunology
- Stem Cell Biology
Background:
- Microglia, the brain's immune cells, have dual roles in neurological diseases, making them a key therapeutic target.
- Understanding microglia-neuron interactions is crucial for developing effective treatments for neurological disorders.
Purpose of the Study:
- To develop a human iPSC-derived multicellular spheroid model (NeuroMIMICS) for studying neural network activity and microglial immune responses.
- To validate the functionality of human iPSC-derived microglia within a complex neural environment.
- To assess the potential of this model for high-throughput screening in neurological disease research.
Main Methods:
- Generation of human induced pluripotent stem cell (iPSC)-derived microglia, astrocytes, and neurons.
- Assembly into multicellular cultured spheroids (NeuroMIMICS).
- Validation of microglial functions (phagocytosis, motility, inflammation) and RNA sequencing analysis.
- Assessment of NeuroMIMICS' response to pathogen-like insults and alpha-synuclein A53T mutation.
Main Results:
- Microglia incorporated into NeuroMIMICS acquired enhanced immune functionality, including increased cytokine production upon stimulation.
- Microglial incorporation corrected alpha-synuclein A53T-induced dysfunctional neural phenotypes.
- The NeuroMIMICS system demonstrated robust measurement of both neural activity and immune responses.
Conclusions:
- The NeuroMIMICS system provides a unique, immunocompetent human neural model for studying neurological diseases.
- This model is suitable for high-throughput screening, accelerating the discovery of therapeutics for neurological conditions.
- The study highlights the critical role of microglia in neurological health and disease, validated within a complex neural network.
