Related Experiment Video
Updated: Jan 31, 2026

Live Imaging of Chemokine Receptors in Zebrafish Neutrophils During Wound Responses
Published on: December 4, 2020
Complex mast cell CCL2-chemokine trafficking patterns during local allergic responses.
Juan Eduardo Montero-Hernández1, Shamila Vibhushan1, Manuela Bratti2
1Centre de Recherche sur l'Inflammation, Université Paris Cité, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1149, Centre National de la Recherche Scientifique (CNRS) EMR8252, Faculté de Médecine Site Bichat, Paris, France; Laboratoire d'Excellence Inflamex, Université Paris Cité, Paris, France.
Mast cells (MC) release C-C Motif Chemokine Ligand 2 (CCL2) through complex vesicular trafficking, influencing local inflammation during allergic responses. This study details CCL2
Area of Science:
- Immunology
- Cell Biology
- Allergy Research
Background:
- Mast cells (MC) release mediators and chemokines during allergic reactions.
- Chemokine vesicular trafficking in MC is poorly understood.
Purpose of the Study:
- To explore C-C Motif Chemokine Ligand 2 (CCL2) trafficking in IgE-activated MC.
- To investigate CCL2 secretion in a murine passive cutaneous anaphylaxis (PCA) model.
Main Methods:
- Utilized CCL2-eGFP knock-in mice and bone marrow-derived MC.
- Employed FACS, ELISA, and microscopy for vesicular trafficking analysis.
- Conducted in vivo experiments during PCA.
Main Results:
- MC release CCL2 in a biphasic manner, involving pre-stored and newly synthesized protein.
- CCL2 trafficking is complex, regulated by cytoskeletal interactions.
- CCL2 interacts with proteoglycans and is secreted differently based on activation type.
Conclusions:
- Reveals complex dynamics of chemokine secretion and trafficking in MC.
- Highlights the role of CCL2 trafficking in driving local inflammation during allergic responses.
Related Concept Videos
Allergic Reactions
Allergic Drug Reactions
Protein Complexes with Interchangeable Parts
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Fixed Action Patterns
Protein Complex Assembly
Many viruses self-assemble into a fully functional unit using the infected host cell to...

