Human iPSC-derived astrocytes

Access consistent, co-culture ready human astrocytes

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Astrocytes are glial cells, essential for maintaining homeostasis and defence within the central nervous system (CNS). Astrocytes form complex networks to regulate energy metabolism, maintain the blood-brain barrier, and ensure synapse formation and maturation. Dysfunction of these cells is increasingly implicated in the progression of CNS disorders and neurodegenerative diseases.

Despite their importance, the precise role of astrocytes in disease remains poorly understood, and replicating their complex functions in vitro is a challenge. Moreover, therapeutic development has historically focused on neurons, often neglecting the significant, and sometimes unintentional, effects of drug compounds on astrocytes. The lack of pure, functional, and scalable human astrocyte models has limited the development of robust screening pipelines to investigate these effects. ioAstrocytes provide scientists with a reliable and scalable source of human iPSC-derived astrocytes that mimic essential functions such as inflammatory responses, protein clearance, and neuronal support.

Learn more about ioAstrocytes and explore the data

Learn more about ioAstrocytes and explore the data

ioAstrocytes rapidly acquire a consistent astrocyte phenotype and exhibit key functional activity

 

Modelling astrocytic phagocytosis, a key process in neuroinflammation and debris clearance, is often challenging. Primary astrocytes show high lot-to-lot variability, compromising the reproducibility of functional assays and making it difficult to obtain consistent results.

In this video, ioAstrocytes readily phagocytose Red S. aureus Bioparticles®, giving scientists confidence in a reliable human model to quantify phagocytic activity. At the start of the video, the particles are located outside the cells and due to the neutral pH of the media are non-fluorescent, but when phagocytised, they are exposed to the acidic environments of intracellular organelles and fluoresce bright red.

 

Cytokine secretion

 

ioAstrocytes provide a robust platform to model neuroinflammation in vitro. When treated with proinflammatory stimuli, astrocytes secret a range of relevant cytokines, including the strong release of Interleukin 6 (IL-6).

Modelling of ioAstrocytes function in CNS drug discovery

Jeremey Krohn - HCF

 

Jeremy Krohn (DZNE)  emphasises the critical role of astrocytes as mediators of brain function and their impact on therapeutic response. Using calcium imaging as a functional readout, the research demonstrates how human iPSC-derived ioAstrocytes and neuron-astrocyte co-cultures provide a superior alternative to animal models. By capturing spontaneous and evoked activity in human-relevant systems, the data highlights how ioAstrocytes respond uniquely to drugs and disease stressors, ensuring more accurate translation from the lab to the clinic.

ioAstrocytes can be easily co-cultured with ioGlutamatergic Neurons 

ioASTRO-webpage_diagrams-v12

 

Our scientists have developed a complete co-culture protocol, which includes simple step-by-step instructions for cell culture, recipes for media and information on required equipment and reagents, for phenotypic readouts like immunocytochemistry staining.

ioAstrocytes secrete cytokines in response to stimulation

Cytokine secretion

 

When challenged with three distinct proinflammatory cocktails, ioAstrocytes exhibit a robust transition to a reactive state, characterised by the significant induction of cytokines such as IL-6. While the presence of IFN-gamma and IL-1beta in the initial stimuli leads to high detection signals, the overall secretory profile confirms a physiologically relevant neuroinflammatory response.

Delivered cryopreserved, the cells are ready for experimentation within days

 

In this video, our scientist takes you through the step-by-step process of how to thaw, seed and culture ioAstrocytes.

What do scientists say about ioAstrocytes

An image of Jeremy Krohn

Jeremy Krohn

PhD Candidate | DZNE / Charité University of Medicine

"We used bit.bio human ioAstrocytes in our experiments to compare with - and step-wise replace - animal derived cells. The human cells were straightforward to establish, showed high reproducibility, and performed well in calcium imaging experiment."

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Co-culture hiPSC-derived glutamatergic neurons and astrocytes
Build neurodegeneration disease models
Model neurodegeneration in vitro with astrocyte-neuron co-cultures
Expand your research
Build neurodegeneration disease models
Model neurodegeneration in vitro with astrocyte-neuron co-cultures
Co-culture hiPSC-derived glutamatergic neurons and astrocytes

Access 20 neuronal disease models with a single co-culture protocol.

View the co-culture protocol
Explore ioGlutamatergic Neuron Disease Models 

Multi-cellular model with neurons and glia human iPSC-derived cells.
Generate functional in vitro models of the CNS
Highly pure human iPSC-derived cells to build complex multi-cell cultures
Expand your research
Generate functional in vitro models of the CNS
Highly pure human iPSC-derived cells to build complex multi-cell cultures
Multi-cellular model with neurons and glia human iPSC-derived cells.

ioAstrocytes are highly pure, defined and consistent, a great companion for your CNS model. 
Combine them with other neuronal and glia ioCells to generate complex multi-cell cultures. 

ioGlutamatergic Neurons 
ioMicroglia
ioOligodendrocyte-like cells

 

Multi-cellular model with neurons and glia human iPSC-derived cells.
Study neuroinflammation
Assess cell damage, microglia activation and cytokine release
Expand your research
Study neuroinflammation
Assess cell damage, microglia activation and cytokine release
Multi-cellular model with neurons and glia human iPSC-derived cells.

Interested in optimising your neuroinflammation studies?
Move into a multi-cellular model using different cell types:

ioMicroglia Male
ioGlutamatergic Neurons
ioOligodendrocyte-like cells

Tailor experimental conditions to answer your scientific question by including ioDisease Model Cells with disease-related mutations.

Modeling disease with hiPSC-derived astrocytes, comparing disease-related mutations with an isogenic control.
Study disease-related mutations
Make true comparisons with a genetically-matched control
Expand your research
Study disease-related mutations
Make true comparisons with a genetically-matched control
Modeling disease with hiPSC-derived astrocytes, comparing disease-related mutations with an isogenic control.

Build your custom disease model into the ioAstrocytes wild type. Use the genetically matched control in your experiments to make true comparisons in your data, being confident that even subtle variances in your data are attributable to your mutation of interest.

Start the conversation today

Start effortlessly with our library of protocols

ioAstrocytes user manual | bit.bio User manual
ioAstrocytes user manual | bit.bio

DOC-1240 v8.0

2025

bit.bio

Download
How to culture ioAstrocytes Video tutorial
How to culture ioAstrocytes
Prachi Bhagwatwar​​​​ | ​Research Assistant | bit.bio
Watch now
Co-culturing ioGlutamatergic Neurons and ioAstrocytes | bit.bio Protocol
Co-culturing ioGlutamatergic Neurons and ioAstrocytes | bit.bio
Download protocol

Product resources

Reprogramming the stem cell for a new generation of cures Publication
Reprogramming the stem cell for a new generation of cures

Davenport A, Frolov T & Kotter M

Drug Discovery World

2020

 

Read more
NRN1 as a therapeutic target for Alzheimer's disease Publication
NRN1 as a therapeutic target for Alzheimer's disease

Pugh DA, et al.

Alzheimer's & Dementia

2026

Using ioGlutamatergic Neurons and ioAstrocytes 

Read more
Astrocytic calcium imaging – from mouse to human systems Talk
Astrocytic calcium imaging – from mouse to human systems

Jeremy Krohn | PhD Candidate | DZNE / Charité University of Medicine

 

Human Cell Forum 2025
Session 1 Track 2 | From cells to systems: Building human iPSC-derived models of pain, neuromuscular junctions, and glial dynamics

Watch now
Uncovering the Glioma Microenvironment With In Vitro Neuronal Models | bit.bio Webinar
Uncovering the Glioma Microenvironment With In Vitro Neuronal Models | bit.bio

Dr Brian Gill, MD | Assistant Professor of Neurological Surgery| Columbia University Irving Medical Center

Dr Tony Oosterveen | Principal Scientist and CNS Lead, Neurobiology | bit.bio

 

Watch now
Exploring the critical roles of astrocytes in health and disease | bit.bio Webinar
Exploring the critical roles of astrocytes in health and disease | bit.bio
Jeremy Krohn | PhD candidate | German Center for Neurodegenerative Diseases (DZNE) Charité Medical Neuroscience Graduate Program

Tom Brown | Senior Product Manager | bit.bio
Watch now
Co-culturing ioGlutamatergic Neurons and ioAstrocytes | bit.bio Protocol
Co-culturing ioGlutamatergic Neurons and ioAstrocytes | bit.bio
Download protocol

Frequently Asked Questions (FAQs)

 

  • What is the role of astrocytes in the central nervous system?

Astrocytes are glial cells that regulate metabolism, maintain the blood-brain barrier, and facilitate synapse maturation. Since the dysfunction of astrocyte networks is often implicated in neurodegenerative conditions, accessing consistent human iPSC-derived astrocytes is essential for experimental workflows.

 

  • How do human iPSC-derived astrocytes address the limitations of primary cells?

Research utilising primary astrocytes is often hindered by high lot-to-lot variability, which compromises the reliability of experimental data. Human iPSC-derived ioAstrocytes bypass this challenge by providing a scalable and defined source of human cells that exhibit a consistent phenotype, ensuring that experimental data is reproducible over time.

 

  • Why are astrocytes important for CNS drug discovery?

While drug discovery has historically prioritised neurons, there is a growing recognition that the inclusion of glial cells is critical to study the effect of drug compounds on astrocytes. Using human iPSC-derived astrocytes allows scientists to use a human model, revealing how drugs interact with glial cells and ensuring that therapeutic candidates are evaluated in a system that better reflects human biology.

 

  • How do ioAstrocytes support neuroinflammation research?

Human iPSC-derived astrocytes, ioAstrocytes, offer a robust platform for investigating neuroinflammatory pathways and immune responses. These cells readily phagocytose bioparticles and secrete cytokines like IL-6 in response to proinflammatory stimuli, enabling the precise quantification of inflammatory states in vitro.

 

  • What are the benefits of co-culturing ioAstrocytes with neurons?

To better mimic the complexity of the brain, ioAstrocytes are fully compatible with co-culture workflows involving neurons, such as ioGlutamatergic Neurons. These multi-cellular cultures facilitate the study of critical neuroglial interactions in a relevant human model. 

References

  1. Kuijlaars, Jacobine, et al. "Sustained synchronized neuronal network activity in a human astrocyte co-culture system." Scientific Reports, 6, 36529, 2016, https://doi.org/10.1038/srep36529

  2. Taga, Arens, et al. "Role of Human-Induced Pluripotent Stem Cell-Derived Spinal Cord Astrocytes in the Functional Maturation of Motor Neurons in a Multielectrode Array System." Stem Cells Transl Med, 8(12):1272-1285, 2019, doi: 10.1002/sctm.19-0147

  3. Thiry, Louise, et al. "Characterization of Human iPSC-derived Spinal Motor Neurons by Single-cell RNA Sequencing." Neuroscience, Volume 450, P57-70, DOI: 10.1016/j.neuroscience.2020.04.041

  4. Thiry, Louise, et al. "Optimization of Long-Term Human iPSC-Derived Spinal Motor Neuron Culture Using a Dendritic Polyglycerol Amine-Based Substrate." ASN Neuro, 14(1). https://doi.org/10.1177/17590914211073381