PMID- 25421898 OWN - NLM STAT- MEDLINE DCOM- 20150928 LR - 20181202 IS - 1744-7593 (Electronic) IS - 1742-5247 (Linking) VI - 12 IP - 2 DP - 2015 Feb TI - Advances in mesoporous silica nanoparticles for targeted stimuli-responsive drug delivery. PG - 319-37 LID - 10.1517/17425247.2014.953051 [doi] AB - INTRODUCTION: Mesoporous silica nanoparticles (MSNPs) are one of the most promising inorganic drug delivery systems (DDSs). The design and development of tumour-targeted MSNPs with stimuli-responsive drug release capability aim at enhancing the efficiency and minimising the side effects of anti-tumour drugs for cancer therapy. AREAS COVERED: This review provides an overview of the scientific advances in MSNPs for tumour-targeted stimuli-responsive drug delivery. The key factors that govern the passive accumulation of MSNPs within solid tumours such as size, shape and surface functionalisation are roughly described. The different active targeting strategies for the specific retention and uptake of MSNPs by tumour cells are also outlined. The approaches developed so far for the synthesis of smart MSNPs capable of releasing the trapped drugs in response to internal or external stimuli and their applications are reviewed. Critical considerations in the use of MSNPs for the treatment of cancer treatment are discussed. The future prospects and key factors concerning the clinical application of MSNPs are considered throughout the manuscript. EXPERT OPINION: MSNPs are promising nanocarriers to efficiently transport and site-specifically deliver highly toxic drugs, such as chemotherapeutic agents for cancer treatment. However, there are certain issues that should be overcome to improve the suitability of MSNPs for clinical applications. Increasing the penetration capability of MSNPs within tumour tissues, providing them of appropriate colloidal stability in physiological fluids and ensuring that their active targeting capability and stimuli-responsive performance are preserved in complex biological media are of foremost significance. Few in vivo evaluation tests of MSNPs have been reported and much research effort into this field is mandatory to be able to move from bench to bedside. FAU - Baeza, Alejandro AU - Baeza A AD - Departamento Quimica Inorganica y Bioinorganica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigacion Sanitaria Hospital , 12 de Octubre i+12. Pza. Ramon y Cajal s/n, 28040 Madrid , Spain vallet@ucm.es. FAU - Colilla, Montserrat AU - Colilla M FAU - Vallet-Regi, Maria AU - Vallet-Regi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20141125 PL - England TA - Expert Opin Drug Deliv JT - Expert opinion on drug delivery JID - 101228421 RN - 0 (Antineoplastic Agents) RN - 7631-86-9 (Silicon Dioxide) SB - IM MH - Animals MH - Antineoplastic Agents/*administration & dosage/adverse effects/therapeutic use MH - *Drug Delivery Systems MH - Humans MH - Nanoparticles MH - Neoplasms/drug therapy MH - Porosity MH - Silicon Dioxide/*chemistry OTO - NOTNLM OT - active targeting OT - cancer OT - mesoporous silica nanoparticles OT - passive targeting OT - stimuli-responsive drug delivery EDAT- 2014/11/26 06:00 MHDA- 2015/09/29 06:00 CRDT- 2014/11/26 06:00 PHST- 2014/11/26 06:00 [entrez] PHST- 2014/11/26 06:00 [pubmed] PHST- 2015/09/29 06:00 [medline] AID - 10.1517/17425247.2014.953051 [doi] PST - ppublish SO - Expert Opin Drug Deliv. 2015 Feb;12(2):319-37. doi: 10.1517/17425247.2014.953051. Epub 2014 Nov 25.