Application Progress of Nano Hydroxyapatite Composites in Cancer Treatment
SHEN Xin1,2, PANG Yu2, MENG Zhaoxu1, LIAN He1
1 School of Medical Devices, Shenyang Pharmaceutical University, Benxi 117004, China 2 School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
Abstract: Hydroxyapatite (HAP) is the main inorganic component of human bones and teeth.With the excellent biocompatibility and bioactivity, it is widely used as a substitute for bone, and also widely used in biomedicine, coating materials, sewage treatment and other fields. Relevant studies have shown that HAP nanoparticles and HAP based nanocomposites can selectively inhibit the growth of cancer cells, and their anti-tumor properties have attracted many scholarś attention.Compared with traditional HAP particles, nano HAP has high specific surface area, high surface energy and targeting property. At the same time, it has high surface roughness and strong affinity, so it is easier to adsorb protein and shows better biocompatibility. However, the conventional nano hydroxyapatite is unstable and easy to agglomerate in vivo, which leads to the problems of large particle size and uneven distribution. There are still great obstacles in clinical application. The preparation of HAP nanocomposite system can improve its adaptability in vivo. The structure and properties of HAP particles, as well as the mechanism and characteristics of HAP particles in cancer treatment were introduced. The application of HAP nanoparticles based complexes in cancer treatment, including HAP composite scaffold, HAP nanocomposites by cross-linking technology, layer by layer self-assembly HAP capsules, hybrid HAP nanoparticles and active targeting HAP nanocomposites, were reviewed. At the same time, the existing problems in the application of nano HAP in cancer treatment were analyzed, and its future development trend was prospected, so as to provide a reference for the preparation of a new treatment system integrating tumor diagnosis, treatment and postoperative repair.