特集 : 神経マーカー抗体
|11558-1-AP||ウサギポリクローナル||ELISA, IHC, IP, WB|
Wolfram syndrome protein (WFS1), also known as Wolframin, is a ubiquitously expressed protein with the highest levels of expression found in the brain, pancreas, heart, and insulinoma beta-cell lines. WFS1 is involved in the regulation of calcium homeostasis, which aids in the maintenance of the endoplasmic reticulum. Mutations in the WFS1 gene are associated with Wolfram syndrome, an autosomal recessive neurodegenerative disorder characterized by diabetes mellitus, optic atrophy, and various additional problems involving the urinary tract, brain, and hearing.
Island and Ocean Cells
Neuroscientists based at MIT (Massachusetts Institute of Technology), led by Nobel Prize-winning scientist Susumu Tonegawa, have identified and characterized two types of cell in the entorhinal cortex that process the ‘when’ and ‘where’ signals in the brain - ‘island’ and ‘ocean’ cells.
Proteintech’s WFS1 Antibody in Action
Island and ocean cells are distinguishable by their expression of certain neuronal markers. Ocean cells are identifiable as reelin-positive stellate cells, (Fig.B), whereas island cells are pyramidal neurons that stain positive for WFS1, (Fig.A). Though wolframin expression is ubiquitous throughout the body, Tonegawa’s group found that it is only present in island cells in the entorhinal cortex. The group used Proteintech’s anti-WFS1 antibody (11558-1-AP) to selectively stain island cells within their research, as shown in several papers.
|Golgi stained examples of A) a pyramidal cell and B) a stellate cell. (Churchill et al. BMC Neuroscience 2004 5:43 doi:10.1186/1471-2202-5-43 Figure 1).|
Staining the two populations of cells with their specific markers allowed the Tonegawa group to map the trajectory of their connections to other parts of the brain. It became clear that island cells and ocean cells, though close in proximity, had different targets: island cells plug into the CA1 region of the hippocampus, whereas ocean cells connect to the dentate gyrus and CA3 region of the hippocampus.
|10904-1-AP||ウサギポリクローナル||ELISA, IF, IHC, IP, WB|
Ionized calcium binding adapter molecule 1 (IBA1), is an inflammatory response protein expressed by monocytes and macrophages and is primarily considered a marker of macrophage activation.
IBA1 is commonly used as a marker for microglial cells. Microglial cells are resident macrophages found in the CNS and play an important role in modulating inflammatory responses within the brain. Microglia are known to scavenge both the brain and spinal cord for pathogens and cells undergoing apoptosis and aid in their removal through phagocytosis.
Activation of microglia are one of the characteristic cellular changes that occurs during neurodegenerative processes such as Parkinson’s disease and Alzheimer’s disease. A recent study by Cui et al. has examined the etiological association between noise exposure and Alzheimer’s disease. It has long been known that Alzheimer’s disease results in neuroinflammation, therefore, Cui et al. examined the level of neuroinflammation present in the brains of mice exposed to chronic noise. Using Proteintech’s antibody IBA1 as a marker for microglia, the authors were able to detect neuroglial activation during neuroinflammation through Western blot analysis.
Furthermore. Cui et al. were able to demonstrate that when the mice were exposed to noise, the expression of IBA1 significantly increased for up to 14 days suggesting that chronic noise exposure may induce profound microglia activation, which may play a role in neuroinflammation and neurodegeneration.
As well as playing an important role in neurodegenerative disorders, IBA1 is also thought to be involved in neuropathic pain, a condition characterised by damage to the somatosensory nervous system.
A recent study by Popiolek-Barczyk et al. examined the use of the compound parthenolide on the ability to activate M2 miroglia/macrophages following sciatic nerve injury. The authors demonstrated that parthenolide increased the levels of IBA1 using our antibody alongside a reduction in pain.
IBA1 clearly plays an important role in a variety of neurological conditions including neurodegenerative processes and pain. The Proteintech IBA1 antibody has been extensively validated in-house, including specificity testing using siRNA. Furthermore, it has been used in 25 peer-reviewed publications.
Immunohistochemical of paraffin-embedded human lymphoma using IBA1 antibody (10904-1-AP) at dilution of 1:100 (under 40x lens).
Immunofluorescent analysis of fixed C6 cells (-20ºC Ethanol) using 10904-1-AP( IBA1 Antibody) at dilution of 1:50 and Alexa Fluor 488-conjugated AffiniPure Goat Anti-Rabbit IgG (H+L).
Cui B, Li K, Gai Z, et al. Chronic Noise Exposure Acts Cumulatively to Exacerbate Alzheimer’s Disease-Like Amyloid-ß Pathology and Neuroinflammation in the Rat Hippocampus. Scientific Reports. 2015;5:12943. doi:10.1038/srep12943.Popiolek-Barczyk K, Kolosowska N, Piotrowska A, et al. Parthenolide Relieves Pain and Promotes M2 Microglia/Macrophage Polarization in Rat Model of Neuropathy. Neural Plasticity. 2015;2015:676473. doi:10.1155/2015/676473.