Abstract
According to Global Cancer Statistics, breast cancer is the second leading cause
of mortality in women. While there are several treatments for breast cancer, they are not always
effective. In most cases, after initial treatment, patients may present a low response to
therapy, more severe relapses, and even drug resistance. Hence, more effective and targeted
therapies are needed. Recently, the use of nanoparticles has emerged as a promising alternative
that will allow the controlled release of drugs in response to stimuli, precise delivery to
the site of action, lower levels of toxicity, and fewer side effects. In this review, we provide
an overview of the recent evidence proposing the delivery of inhibitory molecules encapsulated
in nanoparticles as a new therapy for breast cancer that targets the signaling pathways
governing the processes of tumor formation, maintenance, and expansion.
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