2. Signaling Pathways
  3. Neuronal Signaling
  4. Amyloid-β

Amyloid-β

β-amyloid peptide; Aβ; Abeta

Amyloid-β

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Amyloid-β (Aβ) denotes peptides of 36–43 amino acids that are crucially involved in Alzheimer's disease as the main component of theamyloid plaques found in the brains of Alzheimer patients. The peptides result from the amyloid precursor protein (APP), which is being cut by certain enzymes to yield Aβ. Amyloid-β molecules can aggregate to form flexible soluble oligomers which may exist in several forms. Amyloid-β peptide is due to overproduction of Aβ and/or the failure of clearance mechanisms. Amyloid-β self-aggregates into oligomers, which can be of various sizes, and forms diffuse and neuritic plaques in the parenchyma and blood vessels. Amyloid-β oligomers and plaques are potent synaptotoxins, block proteasome function, inhibit mitochondrial activity, alter intracellular Ca2+levels and stimulate inflammatory processes. Loss of the normal physiological functions of Aβ is also thought to contribute to neuronal dysfunction.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-13027
    DAPT
    		Inhibitor 99.97%
    DAPT (GSI-IX) is a potent and orally active γ-secretase inhibitor with IC50s of 115 nM and 200 nM for total amyloid-β (Aβ) and Aβ42, respectively. DAPT inhibits the activation of Notch 1 signaling and induces cell differentiation. DAPT also induces autophagy and apoptosis. DAPT has neuroprotection activity and has the potential for autoimmune and lymphoproliferative diseases, degenerative disease and cancers treatment.
    DAPT
  • HY-D0218
    Thioflavin T
    		99.40%
    Thioflavin T is a cationic Benzothiazole dye that shows enhanced fluorescence upon binding to amyloid in tissue sections. Excitation max.: ~385 nm (free); ~450 nm (bound); Emission max.: ~445 nm (free); ~485 nm (bound).
    Thioflavin T
  • HY-P0128
    β-Amyloid (25-35)
    		99.55%
    β-Amyloid (25-35) (Amyloid beta-peptide (25-35)) is the fragment Aβ(25-35) of the Alzheimer's amyloid β-peptide, has shown neurotoxic activities in cultured cells.
    β-Amyloid (25-35)
  • HY-P1363A
    β-Amyloid (1-42), human
    		99.89%
    β-Amyloid (1-42) (Amyloid β-peptide (1-42)), human, a 42-amino acid peptide that has not been treated with HFIP, is a brain-penetrant amyloid protein fragment, which can be used in research on Alzheimer's disease and Down’s syndrome. β-Amyloid (1-42), human remaining as a monomer exhibits antioxidant and neuroprotective effects. β-Amyloid (1-42), human, after being monomericized by HFIP and dissolved in DMSO to form the stock solution, on the one hand, can form soluble oligomers (AβOs) when incubated at 4 °C, which have synaptic toxicity and neurotoxicity; on the other hand, it can be incubated at 37 °C to form insoluble fibrils, with lower neurotoxicity, and participating in the oxidative damage process. Aβ42 oligomers bind to various neuronal surface receptors (such as PrPc, mGluR5, NMDA receptors, etc.), triggering oxidative stress, calcium homeostasis imbalance, and synaptic toxicity via activating downstream signaling pathways, leading to neuronal dysfunction and death.
    β-Amyloid (1-42), human
  • HY-16900
    Rolipram
    		Inhibitor 99.87%
    Rolipram is a PDE4 inhibitor, with blood-brain barrier permeability, that reverses β-amyloid-induced learning and memory impairment in rats. Rolipram elevates intracellular cAMP and clevels and regulates the cAMP/CREB signaling pathway, thereby alleviating neuroinflammation and apoptotic responses. Rolipram promotes neuronal differentiation of human bone marrow mesenchymal stem cells and inhibits Methamphetamine- and morphine-induced hyperlocomotion in mice. Rolipram also reduces the viability of glioblastoma stem-like cells and enhances Bevacizumab (HY-P9906)-induced cell death. Rolipram inhibits the expression of proinflammatory cytokines and enhances central noradrenergic transmission. Rolipram is mainly used in studies related to various central nervous system diseases including Alzheimer's disease, major depressive disorder, glioblastoma multiforme, and multiple sclerosis.
    Rolipram
  • HY-D0005
    Bathocuproine
    Bathocuproine is a phenanthroline chelator that binds specifically to Cu+. Bathocuproine preferentially binds Cu+ over Cu2+ to form a chromogenic complex, which is used to detect the oxidation state of copper in biomolecules. Bathocuproine undergoes concentration-dependent self-association to form dimers, and it can engage in aromatic stacking interactions with aromatic residues of Aβ (Kd ≈ 1 mM). Bathocuproine is applicable to research related to Alzheimer's disease.
    Bathocuproine
  • HY-W841438
    Lithium orotate
    		Inhibitor
    Lithium orotate is an orally active lithium supplement with reduced binding that can bypass amyloid sequestration in AD mice models. Lithium orotate can prevent Aβ plaque deposition and phospho-tau accumulation and reverse AD pathology, neuroinflammatory changes and memory loss in AD mice models and ageing wild-type mice. Lithium orotate can be used for the research of alcoholism and Alzheimer’s disease.
    Lithium orotate
  • HY-P11540
    CCKBR agonist-1
    		Inhibitor 98.48%
    CCKBR agonist-1 (Compound 3r1) is a Gq-protein-preferring cholecystokinin B receptor (CCKBR) agonist with an EC50 of 35 pM. CCKBR agonist-1 significantly increases the survival rate of neurons, with an EC50 of 37 pM. CCKBR agonist-1 can improve the cognitive decline in mice by upregulating α-secretase (ADAM10) and calcium signaling molecule PLCB4, reduce the number of amyloid β (Aβ) plaques, and promote long-term potentiation (LTP). CCKBR agonist-1 can be used for the study of Alzheimer's disease.
    CCKBR agonist-1
  • HY-19370
    FPS-ZM1
    		Inhibitor 99.87%
    FPS-ZM1 is a high-affinity and BBB-permeable RAGE inhibitor with a Ki of 25 nM.
    FPS-ZM1
  • HY-P9999
    Trontinemab
    		Inhibitor 99.93%
    Trontinemab (RG6102) is a brain-penetrant, anti-amyloid, bispecific and humanizedized IgG1-κ antibody, targeting to Aβ plaques and transferrin receptor 1 (TFR1). Trontinemab binds to fibrillar Aβ as well as Aβ plaques triggering plaque clearance by engaging immune cells on Alzheimer disease (AD) brain sections. Trontinemab also shows specific affinity to cynomolgus and human TFR1.
    Trontinemab
  • HY-N0148
    Rutin
    		Inhibitor 98.09%
    Rutin (Rutoside) is a flavonoid found in many plants and shows a wide range of biological activities including anti-inflammatory, antidiabetic, antioxidant, neuroprotective, nephroprotective, hepatoprotective and reducing Aβ oligomer activities. Rutin is also a CBR1 inhibitor, which can cross the blood brain barrier. Rutin attenuates vancomycin-induced renal tubular cell apoptosis via suppression of apoptosis, mitochondrial dysfunction, and oxidative stress.
    Rutin
  • HY-P990110
    Lecanemab (Mouse IGG2a)
    		Inhibitor 99.88%
    Lecanemab (Mouse IGG2a) (Mab158) is a monoclonal antibody that targets soluble β-amyloid and has the potential to reduce cognitive decline. The variable region of Lecanemab (Mouse IGG2a) is consistent with that of Lecanemab, while the constant region is of Mouse IGG2a sequence. Lecanemab (Mouse IGG2a) almost abolishes Aβ accumulation in astrocytes and rescues neurons from Aβ-induced cell death. Lecanemab (Mouse IGG2a) holds promise for research in the field of Alzheimer's disease.
    Lecanemab (Mouse IGG2a)
  • HY-P1363
    β-Amyloid (1-42), human TFA
    		99.88%
    β-Amyloid (1-42) (Amyloid β-peptide (1-42), human TFA, a 42-amino acid peptide that has not been treated with HFIP, is a brain-penetrant amyloid protein fragment, which can be used in research on Alzheimer's disease and Down’s syndrome. β-Amyloid (1-42), human TFA remaining as a monomer exhibits antioxidant and neuroprotective effects. β-Amyloid (1-42), human TFA, after being monomericized by HFIP and dissolved in DMSO to form the stock solution, on the one hand, can form soluble oligomers (AβOs) when incubated at 4 °C, which have synaptic toxicity and neurotoxicity; on the other hand, it can be incubated at 37 °C to form insoluble fibrils, with lower neurotoxicity, and participating in the oxidative damage process. Aβ42 oligomers bind to various neuronal surface receptors (such as PrPc, mGluR5, NMDA receptors, etc.), triggering oxidative stress, calcium homeostasis imbalance, and synaptic toxicity via activating downstream signaling pathways, leading to neuronal dysfunction and death.
    β-Amyloid (1-42), human TFA
  • HY-P1061
    Colivelin
    		99.92%
    Colivelin is a brain penetrant neuroprotective peptide and a potent activator of STAT3, suppresses neuronal death by activating STAT3 in vitro. Colivelin exhibits long-term beneficial effects against neurotoxicity, Aβ deposition, neuronal apoptosis, and synaptic plasticity deficits in neurodegenerative disease. Colivelin has the potential for the treatment of alzheimer's disease and ischemic brain injury
    Colivelin
  • HY-P1363B
    β-Amyloid (1-42), human, HFIP-treated
    		99.89%
    β-Amyloid (1-42), human, HFIP-treated, a 42-amino acid peptide that has been treated with HFIP from β-Amyloid (1-42), human (HY-P1363A), is a brain-penetrant amyloid protein fragment, which can be used in research on Alzheimer's disease and Down’s syndrome. β-Amyloid (1-42), human, HFIP-treated remaining as a monomer exhibits antioxidant and neuroprotective effects. β-Amyloid (1-42), human, HFIP-treated, after being dissolved in DMSO to form the stock solution, on the one hand, can form soluble oligomers (AβOs) when incubated at 4°C, which have synaptic toxicity and neurotoxicity; on the other hand, it can be incubated at 37°C to form insoluble fibrils, with lower neurotoxicity, and participating in the oxidative damage process. Aβ42 oligomers bind to various neuronal surface receptors (such as PrPc, mGluR5, NMDA receptors, etc.), triggering oxidative stress, calcium homeostasis imbalance, and synaptic toxicity via activating downstream signaling pathways, leading to neuronal dysfunction and death.
    β-Amyloid (1-42), human, HFIP-treated
  • HY-103240
    Methoxy-X04
    		Chemical 98.65%
    Methoxy-X04 is a fluorescent dye that crosses the blood-brain barrier and selectively binds to beta-pleated sheets found in dense core amyloid Aβ plaques. Methoxy-X04 retains in vitro binding affinity for amyloid b (Ab) fibrils (Ki= 26.8 nM). Methoxy-X04 is fluorescent and stains plaques, tangles, and cerebrovascular amyloid in postmortem sections of AD brain with good specificity.
    Methoxy-X04
  • HY-N0603
    20(S)-Ginsenoside Rg3
    		Inhibitor 99.82%
    20(S)-Ginsenoside Rg3 is the main component of Panax ginseng C. A. Meyer. Ginsenoside Rg3 inhibits Na+ and hKv1.4 channel with IC50s of 32.2±4.5 and 32.6±2.2 μM, respectively. 20(S)-Ginsenoside Rg3 also inhibits Aβ levels, NF-κB activity, and COX-2 expression.
    20(S)-Ginsenoside Rg3
  • HY-N0045
    Ginsenoside Rg1
    		Inhibitor 99.88%
    Ginsenoside Rg1 is one of the major active components of Panax ginseng. Ginsenoside Rg1 ameliorates the impaired cognitive function, displays promising effects by reducing cerebral Aβ levels. Ginsenoside Rg1 also reduces NF-κB nuclear translocation.
    Ginsenoside Rg1
  • HY-B1744
    Pyridoxal phosphate
    		Inhibitor 99.95%
    Pyridoxal phosphate is the active form of vitamin B6, acts as an inhibitor of reverse transcriptases, and is used for the treatment of tardive dyskinesia.
    Pyridoxal phosphate
  • HY-P1388
    β-Amyloid (1-42), (rat/mouse)
    		98.87%
    β-Amyloid (1-42), (rat/mouse) is a 42-aa peptide, shows cytotoxic effect on acute hippocampal slices, and used in the research of Alzheimer's disease.
    β-Amyloid (1-42), (rat/mouse)
Cat. No. Product Name / Synonyms Application Reactivity