Abstract
Objective It has been reported that cancer cells get protected by a complex and rich multicellular environment i.e. the tumor microenvironment (TME) consisting of varying immune cells, endothelial cells, dendritic cells, fibroblasts, etc. This manuscript is aimed at the characteristic features of TME considered as potential target(s) for developing smart anticancer hydrogels. Significance The stimuli-specific drug delivery systems especially hydrogels that can respond to the characteristic features of TME are fabricated for treating cancer. For developing anticancer formulations, TME targeting can be considered an alternative way as it enhances the cytotoxic potential and reduces the unwanted effects. This manuscript shall be of quite interest to academicians, researchers, and clinicians engaged in oncology. Methods The manuscript was prepared by using the data available in the public domain in online resources such as Google Scholar, PubMed, Science Direct, Scopus, Web of Science, Research Gate, etc. Results Smart hydrogels, sensitive to some specific features of TME such as low pH, high concentration of glutathione, specific enzymes, etc., are promising anticancer formulations as these improve the efficacy and lower the side effects of chemotherapy. Conclusion The stimuli-responsive hydrogels have been gaining more attention for delivering cytotoxic drugs to the TME in response to specific stimuli. The stimuli-responsive hydrogels, comprising of cytotoxic drug(s) and specific polymers have some special features such as similarity with biological matrix, ability to respond to various internal as well as external stimuli, improved permeability, porosity, biocompatibility, resemblance with soft living tissues, etc.; and are considered as the promising anticancer candidates.
Published Version
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