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Methoxy-X04 is a fluorescent amyloid β (Aβ) probe for the detection and quantification of plaques, tangles and cerebrovascular amyloid. Methoxy-X04 displays high in vitro binding affinity (Ki = 26.8 nM); binds selectively to fibrillar β-sheet deposits. Methoxy-X04 is a derivative of Congo Red (Cat. No. 5167). Methoxy-X04 can be used for in vivo Aβ plaque labeling. Methoxy-X04 co-localizes with CD68+ phagosomes in plaque-associated Iba1+ microglia; and it labels molecularly distinct plaque-associated microglia populations. Brain penetrant.
|Storage||Store at +4°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
The following data is based on the product molecular weight 344.4. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||2.9 mL||14.52 mL||29.04 mL|
|5 mM||0.58 mL||2.9 mL||5.81 mL|
|10 mM||0.29 mL||1.45 mL||2.9 mL|
|50 mM||0.06 mL||0.29 mL||0.58 mL|
References are publications that support the biological activity of the product.
Bolmont et al (2008) Dynamics of the microglial/amyloid interaction indicate a role in plaque maintenance. J.Neurosci. 28 4283 PMID: 18417708
Yamanaka et al (2012) PPARγ/RXRα-induced and CD36-mediated microglial amyloid-β phagocytosis results in cognitive improvement in amyloid precursor protein/presenilin 1 mice. J.Neurosci. 32 17321 PMID: 23197723
Klunk et al (2002) Imaging Aβ plaques in living transgenic mice with multiphoton microscopy and methoxy-X04, a systemically administered Congo red derivative. J.Neuropathol.Exp.Neurol. 61 797 PMID: 12230326
Grubman et al (2021) Transcriptional signature in microglia associated with Aβ plaque phagocytosis. Nat.Commun. 12 3015 PMID: 34021136
Heneka et al (2013) NLRP3 is activated in Alzheimer's disease and contributes to pathology in APP/PS1 mice. Nature. 493 674 PMID: 23254930
If you know of a relevant reference for Methoxy-X04, please let us know.
Keywords: Methoxy-X04, Methoxy-X04 supplier, amyloid, beta, fluorescent, probes, detection, alzheimers, disease, brain, penetrant, blood, barrier, permeable, high, affinity, amyloidbeta, amyloidb, amyloidβ, Amyloid, Beta, Peptides, Fluorescent, B, Probes, 4920, Tocris Bioscience
Citations are publications that use Tocris products. Selected citations for Methoxy-X04 include:
Fu et al (2016) IL-33 ameliorates Alzheimer's disease-like pathology and cognitive decline. Elife 113 E2705 PMID: 27091974
Socodato et al (2020) Microglia Dysfunction Caused by the Loss of Rhoa Disrupts Neuronal Physiology and Leads to Neurodegeneration Cell Rep 31 PMID: 32579923
Zhao et al (2020) Cellular and Molecular Probing of Intact Human Organs Cell 180 769 PMID: 32059778
Medrano-Jimé nez et al (2019) Malva parviflora extract ameliorates the deleterious effects of a high fat diet on the cognitive deficit in a mouse model of Alzheimer's disease by restoring microglial function via a PPAR-γ-dependent mechanism. J Neuroinflammation 16 143 PMID: 31291963
Plog et al (2018) Transcranial optical imaging reveals a pathway for optimizing the delivery of immunotherapeutics to the brain. JCI Insight 3 PMID: 30333324
Blume et al (2018) Microglial response to increasing amyloid load saturates with aging: a longitudinal dual tracer in vivo μPET-study. J Neuroinflammation 15 307 PMID: 30400912
Ulland et al (2017) TREM2 Maintains Microglial Metabolic Fitness in Alzheimer's Disease. Cell 170 649 PMID: 28802038
Möhle et al (2016) Chronic Toxoplasma gondii infection enhances β-amyloid phagocytosis and clearance by recruited monocytes. Acta Neuropathol Commun 4 25 PMID: 26984535
Do you know of a great paper that uses Methoxy-X04 from Tocris? Please let us know.
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Injected IV, Methoxy-X04 labels amyloid plaques in AD models. Great tool to image various cellular processes around AD plaques.
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