Journal
ACS CHEMICAL BIOLOGY
Volume 6, Issue 5, Pages 425-431Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cb1003459
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Funding
- MEXT(JSPS) [21310140, 20510204]
- Uehara Memorial Foundation
- Global COE program Integrated Material Sciences [B-09]
- Grants-in-Aid for Scientific Research [21310140, 20510204, 22750151] Funding Source: KAKEN
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Natural products provide a rich source of biological tools, but elucidating their molecular targets remains challenging. Here we report a cell morphological profiling of a natural product library, which permitted the identification of bisebromoamide and miuraenamide A as actin filament stabilizers. Automated high-content image analysis showed that these two structurally distinct marine natural products induce morphological changes in HeLa cells similar to those induced by known actin-stabilizing compounds. Bisebromoamide and miuraenamide A stabilized actin filaments in vitro, and fluorescein-conjugated bisebromoamide localized specifically to actin filaments in cells. Cell morphological profiling was also used to identify actin-stabilizing or -destabilizing natural products from marine sponge extracts, leading to the isolation of pectenotoxin-2 and lyngbyabellin C. Overall, the results demonstrate that high-content imaging of nuclei and cell shapes offers a sensitive convenient method for detecting and isolating molecules that target actin.
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