Difference between revisions of "Part:BBa K1391110:Experience"

Latest revision as of 20:49, 1 November 2014

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Applications of BBa_K1391110

PirB (paired immunoglobin-like receptor B) is a transmembrane protein found in murine neurons, shown to bind to beta-amyloid. The interactions is mediated by the first two extracellular immunoglobulin (Ig) domains. Upon binding to beta-amyloid (extracellular), PirB induces enhanced cofilin signaling (intracellular). In this construct, PirB is under hEF1a promoter. Taeho Kim, George S. Vidal, Maya Djurisic, et al. "Human LilrB2 is a beta-amyloid recptor and its murine homolog PirB regulates synaptic plasticity in an Alzheimer's Model". Science. 20 Sep 2013. <http://www.sciencemag.org/content/341/6152/1399>. 16 Oct 2014.

In this detection system, PirB was fused to a linker, a TEV protease (TEVp) cleavage site and a transcription factor (in that order) at its intracellular domain. Cofilin was fused to TEV protease. These modifications allowed the manipulation of the natural operational system of PirB such that when beta-amyloid oligomers bind to the receptor (and activate it) the TEV protease on the recruited cofilin cleaves at the TEVp cleavage site. This releases the transcription factor in to the cytosol, where it is guided to the nucleus of the cell and activates some subsequent (reporter or treatment) module.

User Reviews

UNIQ1e817099b4b90f85-partinfo-00000000-QINU UNIQ1e817099b4b90f85-partinfo-00000001-QINU

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 ===Applications of BBa_K1391110===
-In the brain of a patient with Alzheimer's disease, beta-amyloid protein oligomers accumulate into plaques, which are responsible for the degenerative symptoms of the disease. In order to diagnose Alzheimer's disease, this system uses beta-amyloid oligomer-specific, transmembrane receptors to detect the presence of beta-amyloid oligomers.
+PirB (paired immunoglobin-like receptor B) is a transmembrane protein found in murine neurons, shown to bind to beta-amyloid. The interactions is mediated by the first two extracellular immunoglobulin (Ig) domains. Upon binding to beta-amyloid (extracellular), PirB induces enhanced cofilin signaling (intracellular). In this construct, PirB is under hEF1a promoter.
+Taeho Kim, George S. Vidal, Maya Djurisic, et al. "Human LilrB2 is a beta-amyloid recptor and its murine homolog PirB regulates synaptic plasticity in an Alzheimer's Model". Science. 20 Sep 2013. <http://www.sciencemag.org/content/341/6152/1399>. 16 Oct 2014.
-Human Leukocyte immunoglobulin-like receptor subfamily B member 2 (LilrB2) is a naturally occurring, transmembrane protein receptor that selectively binds beta-amyloid oligomers. LilrB2 belongs to a family of proteins that bind to MHC1 molecules on antigen presenting cells, and is only expressed in monocytes and B-cells (and at lower levels in dendritic cells and natural killer cells) in humans. When beta-amyloid oligomers bind to the extracellular domain of LilrB2, it becomes activated and recruits a protein called cofilin (found inside the cell) to its intracellular domain.
+In this detection system, PirB was fused to a linker, a TEV protease (TEVp) cleavage site and a transcription factor (in that order) at its intracellular domain. Cofilin was fused to TEV protease. These modifications allowed the manipulation of the natural operational system of PirB such that when beta-amyloid oligomers bind to the receptor (and activate it) the TEV protease on the recruited cofilin cleaves at the TEVp cleavage site. This releases the transcription factor in to the cytosol, where it is guided to the nucleus of the cell and activates some subsequent (reporter or treatment) module.
-In this detection system, LilrB2 was fused to a linker, a TEV protease (TEVp) cleavage site and a transcription factor (in that order) at its intracellular domain. Cofilin was fused to TEV protease. These modifications allowed the manipulation of the natural operational system of LilrB2 such that when beta-amyloid oligomers bind to the receptor (and activate it) the TEV protease on the recruited cofilin cleaves at the TEVp cleavage site. This releases the transcription factor in to the cytosol, where it is guided to the nucleus of the cell and activates some subsequent (reporter or treatment) module.