Aquaporin 4 Antibody Astrocyte CNS Water Channel

Aquaporin 4 Antibody Overview

Aquaporin 4 (AQP4) is a membrane water channel protein that plays a central role in regulating water homeostasis within the central nervous system. It is highly enriched in astrocyte endfeet, where it facilitates water movement between blood vessels and brain parenchyma, contributing to the maintenance of brain fluid balance and blood-brain barrier function. Aquaporin 4 antibody reagents are widely used to study neurobiology, astrocyte function, and CNS water transport mechanisms.

Aquaporin 4 antibody, also referred to as AQP4 antibody or astrocyte water channel antibody, is commonly used to detect expression in brain tissue, where AQP4 is predominantly localized to astrocytic processes surrounding blood vessels and the ventricular system. This highly specific distribution produces characteristic perivascular staining patterns that make Aquaporin 4 antibody a reliable marker for astrocytes and glial architecture.

AQP4 plays a key role in brain edema, where altered expression or distribution can influence fluid accumulation and swelling following injury or disease. Aquaporin 4 antibody enables investigation of these processes by allowing visualization of protein localization and changes in expression associated with pathological conditions such as stroke, trauma, and inflammation. Its involvement in water transport makes it a critical target in studies of CNS injury and repair.

Aquaporin 4 is also strongly associated with neuromyelitis optica (NMO), an autoimmune disorder in which antibodies targeting AQP4 contribute to demyelination and neurological damage. Aquaporin 4 antibody is therefore widely used in research focused on neuroinflammation, autoimmune disease mechanisms, and CNS pathology. Its relevance to disease biology adds significant value for studies of brain and spinal cord disorders.

In addition to its role in disease, AQP4 is essential for normal astrocyte function and neural homeostasis. Aquaporin 4 antibody supports studies of glial cell biology, water transport regulation, and interactions between vascular and neural compartments within the CNS.

👉 For a full selection of AQP4 antibody products and formats, visit our AQP4 antibody page.

Aquaporin 4 Antibody in Astrocyte Biology

AQP4 is highly enriched in astrocyte endfeet, making it a key marker for glial cells and CNS structural organization.

Aquaporin 4 Antibody in Brain Water Homeostasis

Aquaporin 4 regulates water movement across the blood-brain barrier, supporting studies of edema and fluid balance in the CNS.

Aquaporin 4 Antibody in Neuroinflammation

AQP4 is a target in neuromyelitis optica and other CNS diseases, making it important for research into autoimmune and inflammatory processes.

A selection of AQP4 antibody products is shown below to support a range of research applications.