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Example sentences for: achrs
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Laminins are major components of the extracellular matrix and exist in many isoforms with varying functions including cell adhesion, neurite outgrowth, and cellular signaling [ 7 8 9 10 ] . Laminin binds agrin [ 11 ] , and colocalizes with AChR aggregates [ 12 13 14 ] . It also binds with α-Dystroglycan (α-DG), an important part of the dystrophin/utrophin glycoprotein complex (Reviewed in [ 15 16 ] ). The dystrophin complex is also found concentrated at the neuromuscular junction with AChRs and laminin, and for this and other reasons is thought to be involved in both formation and maintenance of the NMJ [ 2 17 18 19 20 21 22 23 ] .
Increased expression of AChRs could decrease the dissolution of aggregates, thereby increasing aggregate size, density, and (over time) number.
α-DG aggregate size follows a similar pattern of increase by LN1 (alone or in combination) but not agrin (Figure 4C), but in this case it is the same as the finding with AChRs (Figure 2C).
Because of various lines of evidence connecting α-DG to receptor aggregation and to differences in agrin and LN1 pathways of induction, we next examined the effects of the stimulus protocols on cells double labeled for AChRs (fluorescein) and α-DG (rhodamine) to examine the extent of correlation between the labels (see below) and the α-DG distributions.
AChRs were labeled with rhodamine (single label experiments) or fluorescein (double label experiments) conjugated αBGT (300 nM, Molecular Probes, T-1175/T-1176), and α-DG with a monoclonal antibody (1:1000, Upstate Biotechnology, 05-298, 45 minutes) followed by a secondary antibody (Rhodamine-Goat anti-mouse IgG, 1:100, Jackson Immuno Research Laboratories, 115-025-003, 45 minutes).
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