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Storage pool diseases illuminate platelet dense granule biogenesis
Andrea L Ambrosio1, Santiago M Di Pietro1
1a Department of Biochemistry and Molecular Biology , Colorado State University , Fort Collins , Colorado , USA.
Platelets
|November 17, 2016
Summary
Platelet dense granules (DGs) biogenesis is crucial for hemostasis and involves shared pathways with melanosomes. Gene deficiencies impacting DG formation cause bleeding disorders and oculocutaneous albinism.
Area of Science:
- Cell Biology
- Genetics
- Hematology
Background:
- Platelet dense granules (DGs) store molecules vital for hemostasis.
- Deficiencies in DG biogenesis lead to bleeding disorders (storage pool disease).
- DGs are lysosome-related organelles, sharing biogenesis pathways with melanosomes.
Purpose of the Study:
- To review current knowledge on platelet DG biogenesis.
- To highlight genes involved in DG formation and their associated diseases.
- To discuss the interplay between DG and melanosome biogenesis.
Main Methods:
- Review of existing literature on DG and melanosome biogenesis.
- Focus on genetic factors and molecular machinery.
- Analysis of human and murine gene deficiencies.
Main Results:
- DGs originate from multivesicular bodies and involve specific protein delivery.
- Shared genetic factors impact both DG and melanosome production.
- Gene defects cause bleeding disorders and oculocutaneous albinism.
Conclusions:
- Understanding DG biogenesis is key to treating bleeding disorders.
- The study of related organelles like melanosomes has informed DG research.
- Identifying specific genes is crucial for dissecting organelle biogenesis pathways.
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