Biology:Migrasome

Migrasomes are a type of cellular organelle produced during cell migration that mediate migracytosis, a cell migration-dependent mechanism for releasing cellular contents. They are typically 0.5–3 μm in diameter and form at the intersections or tips of retraction fibers.

Discovery

Migrasomes were first discovered by Chinese researchers Liang Ma and Yu Li in 2014.

1. Discovery of the migration-dependent release mechanism the researchers named “migracytosis.”
2. Description of the discovery and overall characteristics of migrasomes and migracytosis (methods, materials, etc.).
3. Basic structures.

Formation

Migrasomes grow from retraction fibers of migrating cells and require sphingomyelin to form.

1. Describe the relationship between retraction fibers and cell migration.
2. The role of sphingomyelin in the formation of migrasomes.
3. Maintenance of migrasomes.

Development

Migrasomes help coordinate organ development by providing biochemical information as signalling organelles.

1. Coordination of organ morphogenesis by migrasomes shown in zebrafish.
2. Migrasomes as signalling organelles.

Communication

Migrasomes play an important role in the delivery of signalling molecules like chemokines, cytokines, and angiogenic factors.

1. Influence on physiological processes that require integration of information.
2. Role of SNARES.
3. Sites of secretion in migrating cells.

Disease Relevance

Neutrophil-derived migrasomes play an essential role in coagulation at injury sites because they contain adhesion molecules and coagulation factors.

1. Role of migrasomes in haemostasis.
2. Role in immune response.
3. Limitations and continued research.