Journal
EUROPEAN JOURNAL OF PHARMACOLOGY
Volume 915, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ejphar.2021.174512
Keywords
Active targeting; Tumor microenvironment; Angiogenesis; Receptor targeting; Peptides
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A complete cure for cancer is still a challenge for scientists. The current treatment methods such as surgery, radiation and chemotherapy have limitations and can affect healthy tissues. Therefore, researchers are actively exploring active tumor-targeting drug delivery systems to reduce adverse effects on healthy tissues.
A complete cure for cancer is still the holy grail for scientists. The existing treatment of cancer is primarily focused on surgery, radiation and conventional chemotherapy. However, chemotherapeutic agents also affect healthy tissues or organs due to a lack of specificity. While passive targeting is studied for anticancer drugs focused on the enhanced permeability and retention effect, it failed to achieve drug accumulation at the tumor site and desired therapeutic efficacy. This review presents an outline of the current significant targets for active tumor drug delivery systems and provides insight into the direction of active tumor-targeting strategies. For this purpose, a systematic understanding of the physiological factors, tumor microenvironment and its components, overexpressed receptor and associated proteins are covered here. We focused on angiogenesis mediated targeting, receptor-mediated targeting and peptide targeting. This active targeting along with integration with nano delivery systems helps in achieving specific action, thus reducing the associated adverse effects to healthy tissues. Although the tumor-targeting methods and possibilities explored so far seem revolutionary in cancer treatment, in-depth clinical studies data is required for its commercial translation.
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