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Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis
Published on: January 26, 2015
p60c-src activity detected in the chromaffin granule membrane
Biochemical and Biophysical Research Communications
|January 29, 1986
Summary
High levels of p60c-src kinase were found in adrenal tissues and secretory vesicles. This suggests the kinase may regulate neurotransmitter release from these vesicles.
Area of Science:
- Biochemistry
- Cell Biology
- Neuroscience
Background:
- The p60c-src kinase is involved in various cellular processes.
- Chromaffin granules are secretory vesicles in the adrenal medulla responsible for storing and releasing neurotransmitters.
Purpose of the Study:
- To investigate the presence and localization of p60c-src kinase in adrenal medullary chromaffin tissue.
- To explore the potential role of p60c-src in regulating neurotransmitter release.
Main Methods:
- Monoclonal antibodies specific for p60c-src were used for detection.
- Immune complex kinase assays were performed on sucrose density gradient fractions of adrenal medullary tissue.
- Chromaffin granule and granule membrane markers were utilized for localization studies.
Main Results:
- High levels of p60c-src kinase were detected in adrenal medullary chromaffin tissue.
- A significant fraction (37%) of total p60c-src activity was associated with chromaffin granule membranes.
- p60c-src was localized to secretory vesicle membranes.
Conclusions:
- The localization of p60c-src to secretory vesicle membranes suggests a role in regulating neurotransmitter release.
- p60c-src may be involved in the exocytosis process in chromaffin cells.
