What are oligodendrocytes?

Oligodendrocytes are specialized glial cells in the central nervous system (CNS) responsible for producing myelin sheaths that insulate axons and facilitate rapid electrical signal transmission. Beyond myelination, oligodendrocytes provide metabolic support to neurons by transferring energy substrates such as lactate, which helps sustain axonal function under high energy demand. These cells also secrete neurotrophic factors, including glial cell line-derived neurotrophic factor (GDNF), brain-derived neurotrophic factor (BDNF), and insulin-like growth factor 1 (IGF-1), which contribute to neuronal survival, growth, and synaptic maintenance.

Oligodendrocytes interact dynamically with astrocytes, microglia, and neurons, forming a complex cellular network supporting CNS homeostasis. Their development and function are tightly regulated by signaling pathways and transcriptional programs that vary across different brain regions and developmental stages. Understanding the diversity of oligodendrocyte lineage cells, including oligodendrocyte precursor cells (OPCs), is key to studying demyelinating diseases like multiple sclerosis and exploring regenerative therapies.

Functionally, oligodendrocytes are analogous to Schwann cells in the peripheral nervous system (PNS), which also produce myelin but differ in origin, structure, and regenerative capacity. Comparative studies between these two glial types offer insights into myelin biology and potential targets for remyelination strategies.

PDGFR alpha (PDGFRα)

Platelet-derived growth factor receptor alpha (PDGFRα) is widely recognized as a marker for oligodendrocyte precursor cells (OPCs) in the central nervous system. These cells contribute to myelin formation by differentiating into mature oligodendrocytes. PDGFRα responds to PDGF-AA signaling, promoting OPC proliferation and survival. Its expression is tightly regulated during development and remyelination. Studying PDGFRα helps researchers understand myelination dynamics and potential therapeutic strategies for demyelinating conditions such as multiple sclerosis.

Figure 1. Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PDGFR alpha antibody [EPR22059-270] (ab203491).

Recommended products

Neural-glial antigen 2 (NG2)

Neural-glia antigen 2 (NG2) is a chondroitin sulfate proteoglycan expressed by oligodendrocyte precursor cells (OPCs) in the central nervous system. NG2+ OPCs are highly proliferative and remain present in both gray and white matter throughout adulthood. These cells contribute to myelin repair by differentiating into mature oligodendrocytes. NG2 also plays a role in cell migration and response to injury. Its expression makes it a widely used marker in studies of remyelination and neuroinflammation.

Figure 2. Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-NG2 antibody [EPR23752-147] (ab259324).

Recommended products

OLIG2

OLIG2 is a transcription factor expressed in oligodendrocyte precursor cells (OPCs) and plays a role in their progression toward mature oligodendrocytes. It regulates genes involved in myelin formation and influences cell fate decisions during central nervous system development. OLIG2 activity is modulated by phosphorylation, which affects whether cells proliferate or differentiate. Its expression pattern makes OLIG2 a widely used marker in studies of neurodevelopment, remyelination, and glial cell dynamics.

Figure 3. Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Olig2 antibody [EPR2673] (ab109186).

Recommended products

Oligodendrocyte-specific protein (OSP)

Oligodendrocyte-specific protein (OSP), also known as claudin-11, is a tight junction protein expressed by mature oligodendrocytes. It contributes to the formation of tight junctions in central nervous system myelin, particularly within the myelin sheath's intraperiod lines. OSP expression is associated with terminal differentiation of oligodendrocytes and is used to identify mature cells in developmental and disease models. Its presence supports studies of myelin integrity, barrier function, and oligodendrocyte maturation in both health and disease contexts.

Figure 4. Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Oligodendrocyte Specific Protein antibody [EPR29593-15] (ab323317).

Recommended products

Myelin basic protein (MBP)

Myelin basic protein (MBP) is a structural protein expressed by mature oligodendrocytes in the central nervous system. It plays a role in compacting the myelin sheath, which insulates axons and supports efficient nerve conduction. MBP expression is commonly used to identify differentiated oligodendrocytes in developmental and disease studies. Its presence reflects active myelination and is often analyzed in models of demyelination and remyelination, including multiple sclerosis and neurodegenerative conditions.

Figure 5. Immunohistochemistry (Frozen sections) - Anti-Myelin Basic Protein antibody [EPR21188] (ab218011).

Recommended products

Myelin oligodendrocyte glycoprotein (MOG)

Myelin oligodendrocyte glycoprotein (MOG) is a membrane protein expressed on the surface of mature oligodendrocytes in the central nervous system. It is involved in maintaining myelin sheath structure and may play a role in immune recognition. MOG expression begins later in development, making it a valuable marker for mature oligodendrocytes and myelin compaction. It is also studied in autoimmune demyelinating diseases, where antibodies targeting MOG are linked to distinct clinical syndromes.

Figure 6. Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Myelin oligodendrocyte glycoprotein antibody [EP4281] (ab109746).

Recommended products

SOX10

SOX10 is a transcription factor expressed throughout the oligodendrocyte lineage, from precursor cells to mature myelinating cells. It regulates genes involved in oligodendrocyte differentiation and myelin production. SOX10 expression is used to identify oligodendrocyte precursor cells (OPCs) and track their development in both healthy and diseased central nervous systems. Its activity also extends to certain astrocyte populations, highlighting its broader role in glial cell biology and neural development.

Figure 7. Multiplex immunohistochemistry - Anti-SOX10 antibody [EPR4007-104] (ab180862).

Recommended products

References

1. Marques, S.  et al.  Oligodendrocyte heterogeneity in the mouse juvenile and adult central nervous system.  Science  352, 1326–1329 (2016).

2. Zhou, Q., Choi, G. & Anderson, D. J. The bHLH transcription factor Olig2 promotes oligodendrocyte differentiation in collaboration with Nkx2.2.  Neuron  31, 791–807 (2001).

3. Mei, F.  et al.  Stage-specific deletion of Olig2 conveys opposing functions on differentiation and maturation of oligodendrocytes.  J. Neurosci.  33, 8454–8462 (2013).

4. Dyer, C. A., Hickey, W. F. & Geisert, E. E. Myelin/oligodendrocyte-specific protein: a novel surface membrane protein that associates with microtubules.  J. Neurosci. Res.  30, 145–154 (1991).

5. Barbarese, E.  et al.  Expression and localization of myelin basic protein in oligodendrocytes and transfected fibroblasts.  J. Neurochem.  51, 1737–1745 (1988).

6. Takeda, M. & Soliven, B. Arachidonic acid inhibits myelin basic protein phosphorylation in cultured oligodendrocytes.  Glia  21, 281–288 (1997).

7. Scolding, N.  et al.  Myelin-oligodendrocyte glycoprotein (MOG) is a surface marker of oligodendrocyte maturation.  J. Neuroimmunol.  22, 169–176 (1989).

8. Pozniak, C. D.  et al.  Sox10 directs neural stem cells toward the oligodendrocyte lineage by decreasing Suppressor of Fused expression.  Proc. Natl Acad. Sci. USA  107, 21795–21800 (2010).