Related Experiment Videos
Microfilament-undercoated plasmalemmal infoldings in a human clear-cell sarcoma
Journal of Ultrastructure Research
|June 1, 1985
Summary
Clear-cell sarcoma tumor cells exhibit unique cytoplasmic structures formed by infolded cell membranes. These structures contain organized microfilaments, suggesting a role in cellular architecture.
Area of Science:
- Cell Biology
- Oncology
- Electron Microscopy
Background:
- Clear-cell sarcoma is a rare soft tissue sarcoma.
- Tumor cells can exhibit unique ultrastructural features.
Purpose of the Study:
- To characterize unusual cytoplasmic structures in clear-cell sarcoma.
- To investigate the composition and origin of these structures.
Main Methods:
- Transmission electron microscopy was used to examine tumor cell cytoplasm.
- Ultrastructural analysis focused on identifying and characterizing novel cellular formations.
Main Results:
- Multilayered, concentric arrays of cisternae were observed within tumor cell cytoplasm.
- These structures were identified as intracytoplasmic infoldings of the cell membrane.
- Organized microfilaments (6.5 nm diameter) were consistently found within these infoldings, adjacent to the cell membrane.
Conclusions:
- The observed structures represent a unique form of cell membrane invagination within clear-cell sarcoma cells.
- The associated microfilaments may function as a specialized plasmalemmal undercoat, influencing cellular structure or function.
- Further research is needed to elucidate the precise biological significance of these findings in sarcoma development.