Abstract
Currently, there are more than 35 US FDA-approved NPs utilizing PEG in their biomedical applications. PEGylation, which is the addition of PEG to the NP formulation, provides immunity from the hostile biological environment. The ‘stealth’ property, further confers on the PEG-NP formulation benefits that are not normally provided by other polymers. This mini-review briefly describes the mechanisms of action, as well as the benefits and challenges of PEG and PEGylation in cancer therapy.
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