tissues (Slaughter et al., 2009; Fisher et al.,
2009; Kloxin et al., 2010). In particular, hydrogels can form a threedimensional
organic network with a high water content into which
desired functions can be incorporated. Due to their unique, versatile,
and controllable properties, numerous new nanotechnology
approaches have emerged to develop modified hydrogels for specific
applications, particularly in tissue engineering, stem cell engineering,
and cancer research