Related Experiment Video
Updated: Jun 13, 2026
07:48
An Orthotopic Bladder Cancer Model for Gene Delivery Studies
Published on: December 1, 2013
Violacein as a multitarget agent in bladder cancer cells.
Juan F Idiarte1, Lucía Canclini2, Diego Alem2
1Bioquímica, Departamento de Biología Celular y Molecular, Instituto de Biología, Facultad de Ciencias, Universidad de la República, Igua 4225. 11400, Montevideo, Uruguay.
Journal of Proteomics
|June 11, 2026
Summary
The bacterial pigment violacein shows anticancer effects by altering the tumor microenvironment and boosting immune responses in bladder cancer cells. It may improve patient prognosis by targeting multiple cancer pathways.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Violacein, a bacterial pigment, exhibits anticancer properties.
- Previous studies demonstrated its antiproliferative effects on cervical and bladder cancer cells.
Purpose of the Study:
- To investigate the molecular mechanisms of violacein's anticancer activity in T24 bladder cancer cells.
- To identify key proteins and pathways modulated by violacein using quantitative proteomics and qRT-PCR.
Main Methods:
- Quantitative differential proteomics was performed on T24 bladder cancer cells treated with violacein.
- Quantitative real-time PCR (qRT-PCR) was used to validate gene expression changes.
- Proteomic data was analyzed to identify proteins involved in cancer-related pathways.
Main Results:
- Violacein treatment led to the overproduction of proteins involved in tumor microenvironment remodeling, cell adhesion, immune response, apoptosis, autophagy, and cell cycle arrest.
- ICAM-1 showed significant gene and protein overexpression, suggesting a role in enhancing immune cell infiltration.
- Violacein reduced Annexin levels, potentially limiting tumor promotion and metastasis.
Conclusions:
- Violacein acts as a multitarget agent, modulating various cancer-related pathways.
- ICAM-1 is identified as a key mediator of violacein's anticancer effects.
- Violacein's modulation of the tumor microenvironment and immune response suggests potential for improved bladder cancer patient prognosis.
