“…1,6 Emerging approaches based on genetic engineering and synthetic biology may provide the solutions to overcome these difficulties, such as removal of checkpoint molecules, upregulation of tumorhoming receptors, and expression of functional secretory proteins to modulate the microenvironment. 16 While the genetic modifications facilitate T cells to overcome some challenges, other obstacles, such as expansion difficulties, on-target but off-tumor side effects, and neurotoxicities, have challenged the applications of genetically engineered immune cells. 63 Biomaterials have been widely used in cancer, cardiovascular disease, metabolic disorders, and tissue engineering for decades by serving as effective components or auxiliary ingredients.…”