Abstract
Lymphatic drug targeting is an effective approach for targeting immunomodulators, and chemotherapeutic drugs at a specific organ or cellular location. The cellular, paracellular, and dendritic cell trafficking machinery are involved in the lymphatic transport of therapeutic agents. The engineering of triggered and hybrid lymphatic drug delivery systems (LDDS) is a promising strategy to fight cancer metastasis and microbial pandemics. Hybrid lymphatic drug delivery systems can be tailored and developed by grafting the conventional LDDS with biological agents. Thus, hybrid LDDS could collect the benefits of conventional and biological delivery systems. Moreover, the fabrication of triggered LDDS increases drug accumulation in the lymphatic system in the response to an internal stimulus such as pH, and redox status or external such as magnetic field, temperature, and light. Stimuli-responsive LDD systems prevent premature release of payload and mediate selective drug biodistribution. This improves therapeutic impact and reduces the systemic side effect of anticancer, immunomodulatory, and antimicrobial therapeutics. This review highlights the challenges and future horizons of nanoscaled-triggered LDDS and their influence on the lymphatic trafficking of therapeutic molecules.
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