Signal Receptor Regulation
Signal Receptor Regulation - Related Videos
10:36
Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer
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Cited by 5 •
2016
Integration of data from genome-wide sequencing experiments and metabolomics experiments is a challenge. In this paper we report, for the first time, generation, analysis and integration of transcriptome, cistrome and metabolome data from breast cancer cells treated with estradiol.
16:24
Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
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Cited by 9 •
2014
Molecular signaling through both estrogen and microRNAs are critical in breast cancer development and growth. Estrogen activates the estrogen receptors, which are transcription factors. Many transcription factors can regulate the expression of microRNAs, and estrogen-regulated microRNAs can be profiled using different large-scale techniques.
01:41
Signal Sequences and Sorting Receptors
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2023
Signal sequences are short amino acid sequences that guide newly synthesized proteins to their proper location within the cell. Classical signal sequences are fifteen to sixty amino acids long and present at the N-terminus of a polypeptide chain. Each signal sequence has a conserved segment of basic residues towards their N terminus, a hydrophobic core, and a C-terminus rich in polar residues. The C-terminus also contains a signal cleavage site and features a -3 -1 sequence motif. The -3-1...
01:28
Insulin: The Receptor and Signaling Pathways
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2024
Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but this inhibition is released...
03:53
An Assay to Screen Bioactive Nanoparticles for Toll-Like Receptor Signaling Inhibition
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2025
This video demonstrates a reporter cell-based assay for screening potential bioactive nanoparticles that inhibit Toll-like receptor (TLR) signaling. The assay involves introducing lipopolysaccharides (LPS) mixed with peptide-gold nanoparticle hybrids to reporter macrophages expressing the reporter proteins — secreted embryonic alkaline phosphatase (SEAP) and luciferase. The reduction of LPS-induced TLR signal mediated by the hybrids is determined by measuring the reporter signals.
FAQs
Ligand binding can change receptor activity, thereby influencing how strongly a cell responds to a signal and how long that response persists. Regulation at this stage helps cells distinguish an appropriate response from excessive or prolonged activity. Examining ligand-dependent changes is therefore important for understanding how extracellular or intracellular signals are converted into controlled biological effects.
Phosphorylation and dephosphorylation provide reversible ways to adjust receptor activity. Adding or removing phosphate groups can modify whether signaling is enhanced, limited, or terminated, allowing receptor responses to change as cellular conditions shift. These mechanisms are especially relevant when researchers analyze how cells maintain biological balance rather than responding continuously at a fixed intensity.
Regulatory proteins can interact with receptors to modify their activity, while trafficking changes the receptor’s cellular availability. Internalization removes receptors from the relevant signaling location, recycling can return them, and degradation can reduce their presence more permanently. Together, these processes regulate both the magnitude and persistence of receptor-mediated responses.
Cells coordinate mechanisms that amplify useful signals while also limiting or terminating them. Changes in receptor activity, regulatory-protein interactions, and receptor movement through internalization, recycling, or degradation can adjust response strength and duration. This balance supports normal cellular coordination, whereas dysregulation can contribute to disease by disturbing how cells respond to signals.
A useful investigation considers several connected features: ligand-dependent receptor activity, phosphorylation or dephosphorylation, interactions with regulatory proteins, and receptor trafficking. Researchers can then relate these regulatory changes to signal strength and duration. This integrated approach helps explain how cells coordinate responses rather than treating receptor activity as an isolated event.
Research in this area helps clarify how cells coordinate growth, metabolism, movement, and immune responses. These processes depend on cellular responses being appropriately adjusted in strength and duration. Comparing regulation across such contexts can reveal how a common signaling principle supports different biological outcomes and where altered receptor control may affect normal function.
Understanding receptor control supports therapies intended to selectively enhance, inhibit, or redirect receptor-mediated signaling. Therapeutic evaluation can therefore focus not only on whether a receptor is active, but also on how regulation changes response intensity and duration. This perspective is relevant when dysregulated signaling contributes to disease and treatment must restore more appropriate cellular behavior.