PMID- 27151685 OWN - NLM STAT- MEDLINE DCOM- 20170403 LR - 20170403 IS - 2066-8279 (Electronic) IS - 1220-0522 (Linking) VI - 57 IP - 1 DP - 2016 TI - pH sensitive core-shell magnetic nanoparticles for targeted drug delivery in cancer therapy. PG - 23-32 AB - In the last decade, nanobiotechnology has evolved rapidly with an extensive impact on biomedical area. In order to improve bioavailability and minimize adverse effects, drug delivery systems based on magnetic nanocomposites are under development mainly for cancer imaging and antitumor therapy. In this regard, pH sensitive core-shell magnetic nanoparticles (NPs) with accurate controlled size and shape are synthesized by various modern methods, such as homogeneous precipitation, coprecipitation, microemulsion or polyol approaches, high temperature and hydrothermal reactions, sol-gel reactions, aerosol/vapor processes and sonolysis. Due to their unique combined physico-chemical and biological properties (such as higher dispensability, chemical and thermal stability, biocompatibility), pH responsive core-shell magnetic NPs are widely investigated for controlled release of cytostatic drugs into the tumor site by means of pH change: magnetite@silicon dioxide (Fe3O4@SiO2), Fe3O4@titanium dioxide (TiO2), beta-thiopropionate-polyethylene glycol (PEG)-modified Fe3O4@mSiO2, Fe3O4 NPs core coated with SiO2 with an imidazole group modified PEG-polypeptide (mPEG-poly-L-Asparagine), polyacrylic acid (PAA) and folic acid (FA) coating of the iron oxide NP core, methoxy polyethylene glycol-block-polymethacrylic acid-block-polyglycerol monomethacrylate (MPEG-b-PMAA-b-PGMA) attached by a PGMA block to a Fe3O4 core, PEG-modified polyamidoamine (PAMAM) dendrimer shell with Fe3O4 core and mesoporous silica coated on Fe3O4, mostly coated with an anticancer drug. This review paper highlights the modern research directions currently employed to demonstrate the utility of the pH responsive core-shell magnetic NPs in diagnosis and treatment of oncological diseases. FAU - Lungu, Iulia Ioana AU - Lungu II AD - Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Romania; radulescu_marius@yahoo.com. FAU - Radulescu, Marius AU - Radulescu M FAU - Mogosanu, George Dan AU - Mogosanu GD FAU - Grumezescu, Alexandru Mihai AU - Grumezescu AM LA - eng PT - Journal Article PT - Review PL - Romania TA - Rom J Morphol Embryol JT - Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie JID - 9112454 RN - 0 (Drug Carriers) RN - 0 (Magnetite Nanoparticles) SB - IM MH - Animals MH - Drug Carriers/chemistry MH - *Drug Delivery Systems MH - Humans MH - Hydrogen-Ion Concentration MH - Magnetite Nanoparticles/*chemistry MH - Neoplasms/*drug therapy EDAT- 2016/05/07 06:00 MHDA- 2017/04/04 06:00 CRDT- 2016/05/07 06:00 PHST- 2016/05/07 06:00 [entrez] PHST- 2016/05/07 06:00 [pubmed] PHST- 2017/04/04 06:00 [medline] AID - 570116023032 [pii] PST - ppublish SO - Rom J Morphol Embryol. 2016;57(1):23-32.