Abstract
Cancer is one of the major health-related issues affecting the
population worldwide and subsequently accounts for the second-largest
death. Genetic and epigenetic modifications in oncogenes or tumor
suppressor genes affect the regulatory systems that lead to the
initiation and progression of cancer. Conventional methods, including
chemotherapy/radiotherapy/appropriate combinational therapy and surgery,
are being widely used for theranostics of cancer patients. Surgery is
useful in treating localized tumors, but it is ineffective in treating
metastatic tumors, which spread to other organs and result in a high
recurrence rate and death. Also, the therapeutic application of free
drugs is related to substantial issues such as poor absorption,
solubility, bioavailability, high degradation rate, short shelf-life,
and low therapeutic index. Therefore, these issues can be sorted out
using nano lipid-based carriers (NLBCs) as promising drug delivery
carriers. Still, at most, they fail to achieve site targeted drug
delivery and detection. This can be achieved by selecting a specific
ligand/antibody for its cognate receptor molecule expressed on the
cancer cell surface. In this review, we have mainly discussed the
various types of ligands used to decorate NLBCs. A list of the ligands
used to design nanocarriers to target malignant cells specifically has
been extensively undertaken, and the approved ligand decorated
lipid-based nanomedicines with their clinical status has been explained
in tabulated form to provide a wider scope to the readers regarding
ligand coupled NLBCs.