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Related Concept Videos

Communication01:03

Communication

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Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
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Communication01:28

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Sharing information, concepts, and emotions to foster mutual understanding is communication. The sender, recipient, and transaction must be considered in this manner. The sender is the person who shares the message, the recipient is the person who receives and understands the message, and the transaction is the method used to deliver the message and the variables that affect the communication's context and surroundings. The nurse-client connection is built on therapeutic communication.
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Fusion of Secretory Vesicles with the Plasma Membrane01:26

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Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
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Bacterial Signaling01:30

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Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
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Therapeutic Communication01:30

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Communication is a lifelong learning process. Through therapeutic communication, nurses can collect relevant assessment data, provide education and counseling, and interact during nursing interventions. Sending and receiving messages occur through verbal and nonverbal communication techniques and can happen separately or simultaneously.
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Neuronal Communication01:28

Neuronal Communication

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Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...
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Related Experiment Video

Updated: Jan 25, 2026

Size Exclusion Chromatography to Analyze Bacterial Outer Membrane Vesicle Heterogeneity
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Size Exclusion Chromatography to Analyze Bacterial Outer Membrane Vesicle Heterogeneity

Published on: March 31, 2021

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Bacterial communication through membrane vesicles.

Masanori Toyofuku1,2

  • 1a Faculty of Life and Environmental Sciences, University of Tsukuba , Tsukuba , Japan.

Bioscience, Biotechnology, and Biochemistry
|April 26, 2019
PubMed
Summary

Bacteria use membrane vesicles (MVs) to transport hydrophobic signaling molecules, essential for cell-to-cell communication and gene regulation. New research reveals diverse MV formation mechanisms beyond simple blebbing.

Keywords:
Quorum sensingbiofilmbubbling cell deathexplosive cell lysismembrane vesicle

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Related Experiment Videos

Last Updated: Jan 25, 2026

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Characterization of Membrane Transporters by Heterologous Expression in E. coli and Production of Membrane Vesicles
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Area of Science:

  • Microbiology
  • Molecular Biology
  • Cell Biology

Background:

  • Bacteria communicate using signaling molecules to regulate gene expression.
  • Hydrophobic signaling molecules pose transport challenges in aqueous environments.
  • Membrane vesicles (MVs) are implicated in bacterial intercellular communication.

Purpose of the Study:

  • To investigate the transport mechanism of hydrophobic bacterial signaling molecules.
  • To explore the role of membrane vesicles (MVs) in mediating bacterial communication.
  • To understand novel mechanisms of MV formation in bacteria.

Main Methods:

  • Analysis of hydrophobic signaling molecule transport.
  • Identification and characterization of membrane vesicles (MVs).
  • Microscopy and genetic analysis of MV formation in model bacteria.

Main Results:

  • Hydrophobic signaling molecules, like N-acyl homoserine lactones, are transported via MVs.
  • MVs are formed through diverse mechanisms including blebbing, explosive cell lysis, and bubbling cell death.
  • These findings challenge previous assumptions about MV biogenesis and bacterial interactions.

Conclusions:

  • Membrane vesicles (MVs) are crucial for the intercellular transport of hydrophobic signaling molecules in bacteria.
  • Diverse MV formation pathways expand our understanding of bacterial communication and community dynamics.
  • The study highlights the complexity of bacterial interactions mediated by vesicle-mediated signaling.