Journal
PHARMACEUTICS
Volume 13, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/pharmaceutics13091345
Keywords
photodynamic therapy; photosensitizers; liposomes; stealth liposomes; thermosensitive liposomes; tetraether lipids; cancer
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Funding
- American University in Cairo
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Photodynamic therapy is a promising cancer treatment strategy that utilizes highly reactive oxygen species to kill cancer cells. However, it has shortcomings, leading researchers to develop various nanoplatforms to enhance treatment effectiveness.
Photodynamic therapy (PDT) is a promising non-invasive strategy in the fight against that which circumvents the systemic toxic effects of chemotherapeutics. It relies on photosensitizers (PSs), which are photoactivated by light irradiation and interaction with molecular oxygen. This generates highly reactive oxygen species (such as O-1(2), H2O2, O-2, center dot OH), which kill cancer cells by necrosis or apoptosis. Despite the promising effects of PDT in cancer treatment, it still suffers from several shortcomings, such as poor biodistribution of hydrophobic PSs, low cellular uptake, and low efficacy in treating bulky or deep tumors. Hence, various nanoplatforms have been developed to increase PDT treatment effectiveness and minimize off-target adverse effects. Liposomes showed great potential in accommodating different PSs, chemotherapeutic drugs, and other therapeutically active molecules. Here, we review the state-of-the-art in encapsulating PSs alone or combined with other chemotherapeutic drugs into liposomes for effective tumor PDT.
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