Phosphorylated Tau (p-Tau)
Phosphorylated Tau (p-Tau)
Tau is a microtubule-associated protein that plays a crucial role in stabilizing microtubules within neuronal axons, thereby maintaining the structural integrity and function of neurons. Phosphorylated Tau is a normal post-translational modification of tau that regulates its binding affinity to microtubules. Under physiological conditions, this process is tightly controlled to ensure proper neuronal function.
However, dysregulation of tau phosphorylation can lead to the detachment of tau from microtubules, resulting in microtubule destabilization and impaired axonal transport. This aberrant phosphorylation promotes the self-assembly of tau into insoluble aggregates, such as paired helical filaments (PHFs) and neurofibrillary tangles (NFTs), which are characteristic of various neurodegenerative diseases.
The detection and quantification of phosphorylated tau (p-tau) have become essential in research. Advancements in ultrasensitive assays, including immunoassays and mass spectrometry-based methods, have enabled the measurement of specific p-tau isoforms in biological samples like cerebrospinal fluid and blood plasma. These techniques facilitate the study of tau-related pathologies and aid in the development of therapeutic strategies targeting tau phosphorylation.
