Researchers at the National Institute of Technology in Agartala and the CSIR-Indian Institute of Chemical Technology in Hyderabad have developed a transition metal compound nanoplatform that enters breast cancer cells and destroys them by generating reactive oxygen species (ROS) upon exposure to red light, according to findings published in the journal J. Photochem. Photobiol. B: Biol.
Targeting Mitochondria With Oxovanadium Complexes
The newly engineered nanosystem relies on an oxovanadium complex capable of producing large amounts of reactive oxygen species when activated by light. To ensure these compounds reach their cellular targets, lead researcher Mithun Roy and his team attached a positively charged molecular tag to the structure. This tag exploits a natural chemical attraction, homing in on the negatively charged mitochondrial membrane of the cancer cells.
Enhancing Light Penetration With Gold Nanorods
To overcome this limitation, the research team attached gold nanorods to the system. According to the study, these nanorods make the entire platform sensitive to longer wavelengths of light, allowing the nanosystem to penetrate deeper into biological tissues while generating higher volumes of ROS.
When the therapeutic platform floods the cancer cell with reactive oxygen species, it overwhelms the cellular antioxidant defenses. This surge precipitates controlled cell death, effectively neutralizing the malignant threat from within.
Suppressing Cancer Cell Migration
Beyond destroying localized cancer cells, the nanosystem demonstrated an ability to suppress epithelial-mesenchymal transition (EMT). According to the study authors, EMT is the critical biological process that enables cancer cells to migrate and spread throughout the body.
Frequently Asked Questions
How does the nanoplatform destroy breast cancer cells?
The nanoplatform enters the cancer cells and delivers reactive oxygen species directly to the mitochondria when exposed to red light, triggering the cell’s self-destruction mechanism.
What role do gold nanorods play in the therapy?
Gold nanorods make the nanosystem sensitive to longer wavelengths of light, allowing the treatment to penetrate deeper into biological tissue and generate more ROS.
Can this nanosystem prevent cancer from spreading?
According to the study authors, the nanosystem also suppresses epithelial-mesenchymal transition (EMT), the process that enables cancer cells to migrate throughout the body.
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