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3-Aminobenzamide induces cytoskeleton rearrangement in M14 melanoma cells
W Malorni1, G Rainaldi, E Straface
1Department of Ultrastructures, Istituto Superiore di Sanità, Roma, Italy.
Abstract:
3-aminobenzamide (3-ABA) is an inhibitor of poly-ADP-ribose-polymerase, an enzyme involved in numerous subcellular processes including cell death. With the aim of contributing to clarify the mode of action of the drug, which is still poorly understood, its effects on cultured melanoma cells M14 have been assessed. In particular, an impairment of cell growth accompanied by the formation of long and numerous dendritic-like protrusions has been detected. This finding appears to be due to a specific effect of the drug on some cytoskeletal elements and could be associated with its differentiating capability. This finding, together with previous data from our group--Biochem. Biophys. Res. Commun., (1994) 199, 525-530 and 1250-1255--suggests that cytoskeleton is an important target of 3-ABA.
Insights
3-aminobenzamide (3-ABA) inhibits poly-ADP-ribose-polymerase, impacting melanoma cell growth and causing dendritic protrusions. These effects suggest 3-ABA influences the cytoskeleton and may have differentiating capabilities.
Area of Science:
- Cell Biology
- Biochemistry
- Pharmacology
Background:
- 3-aminobenzamide (3-ABA) is a poly-ADP-ribose-polymerase inhibitor.
- Poly-ADP-ribose-polymerase is involved in critical cellular processes, including cell death.
- The precise mechanism of action for 3-ABA remains incompletely understood.
Purpose of the Study:
- To investigate the effects of 3-ABA on cultured M14 melanoma cells.
- To elucidate the mode of action of 3-ABA.
- To explore the potential role of the cytoskeleton in 3-ABA's effects.
Main Methods:
- Cultured M14 melanoma cells were treated with 3-ABA.
- Cell growth and morphology were assessed.
- Cytoskeletal elements were examined for drug-induced alterations.
Main Results:
- 3-ABA treatment impaired the growth of M14 melanoma cells.
- Cells exhibited the formation of extensive, long, dendritic-like protrusions.
- These morphological changes suggest a specific interaction with cytoskeletal components.
Conclusions:
- 3-ABA significantly affects melanoma cell morphology and growth.
- The cytoskeleton appears to be a key target of 3-ABA.
- 3-ABA may possess differentiating capabilities, potentially mediated through cytoskeletal modulation.