pH-responsive drug delivery systems as intelligent carriers for targeted drug therapy: Brief history, properties, synthesis, mechanism and application

2021 ◽  
pp. 102987
Author(s):  
Marzieh Sajadi Bami ◽  
Mohammad Amin Raeisi Estabragh ◽  
Payam Khazaeli ◽  
Mandana Ohadi ◽  
Gholamreza Dehghannoudeh
Keyword(s):  
Drug Delivery ◽  
Drug Therapy ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Ph Responsive ◽  
Synthesis Mechanism ◽  
Targeted Drug

Postscript

Drug Delivery ◽  
2001 ◽  
Author(s):  
W. Mark Saltzman
Keyword(s):  
Drug Delivery ◽  
Drug Therapy ◽  
Molecular Biology ◽  
Drug Delivery Systems ◽  
Circulatory System ◽  
Delivery Systems ◽  
Intravenous Injections ◽  
Trail Marking ◽  
Targeted Drug ◽  
Targeted Drug Delivery Systems

Drug delivery—like other technologies—is a result of scientific inquiry, a natural collaboration between discovery and invention. This spirit is obvious in drug therapy: it links Harvey’s inquiry into the circulatory system with intravenous injections, the molecular biology of receptors to targeted drug delivery systems. We must invent to discover, and discover to invent. Trail-marking has great benefits, but also perils; being shown a direction can make it more difficult to leave the pathway. It is my hope that you will have found something here that engages you, a flash that persuades you off the path and into the forest.

Recent Advances in the Development of Polymeric Nanocarrier Formulations for the Treatment of Colon Cancer

2019 ◽  
Vol 9 (1) ◽  
pp. 2-14
Author(s):  
Sahil Kumar ◽  
Bandna Sharma ◽  
Kiran Thakur ◽  
Tilak R. Bhardwaj ◽  
Deo N. Prasad ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Colon Cancer ◽  
Hyaluronic Acid ◽  
Targeted Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Near Ir ◽  
Targeted Drug ◽  
Poly Ethylene ◽  
Novel Drug

Background: Many efforts have been explored in the last decade to treat colon cancer but nanoparticulate drug delivery systems are making a vital contribution in the improvement of drug delivery to colon cancer cells. Objective: In this review, we attempt to highlight recent advancements in the development of novel drug delivery systems of nanoparticles for the targeted drug delivery to colon. Polymers like Epithelial Cell Adhesion Molecule (EpCAM) aptamer chitosan, Hyaluronic Acid (HA), Chitosan (CS)– Carboxymethyl Starch (CMS), silsesquioxane capped mesoporous silica, Near IR (NIR) fluorescent Human Serum Albumin (HAS), poly(ethylene glycol)-conjugated hyaluronic acid etc. have been discussed by employing various anticancer drugs like doxorubicin, oxaliplatin, paclitaxel, 5-fluorouracil etc. Conclusion: These novel drug delivery systems have been determined to be more efficacious in terms of stability, sustained and targeted drug delivery, therapeutic efficacy, improved bioavailability and enhanced anticancer activity.

pH responsive chitosan-coated microemulsions as drug delivery systems

2020 ◽  
pp. 1-12
Author(s):  
Daniela Díaz-Zepeda ◽  
René D. Peralta-Rodríguez ◽  
Bertha Puente-Urbina ◽  
Gladis Cortez-Mazatan ◽  
H. Iván Meléndez-Ortiz
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Ph Responsive

scholarly journals Aptamer-modified polymer nanoparticles for targeted drug delivery

2016 ◽  
Vol 17 (1-2) ◽  
Author(s):  
Julia Modrejewski ◽  
Johanna-Gabriela Walter ◽  
Imme Kretschmer ◽  
Evren Kemal ◽  
Mark Green ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Cancer Cells ◽  
Targeted Drug Delivery ◽  
Drug Delivery Systems ◽  
Mode Of Delivery ◽  
Delivery Systems ◽  
The Body ◽  
Lung Cancer Cells ◽  
Targeted Drug

AbstractThe purpose of this study was to develop a model system for targeted drug delivery. This system should enable targeted drug release at a certain tissue in the body. In conventional drug delivery systems, drugs are often delivered unspecifically resulting in unwarranted adverse effects. To circumvent this problem, there is an increasing demand for the development of intelligent drug delivery systems allowing a tissue-specific mode of delivery. Within this study, nanoparticles consisting of two biocompatible polymers are used. Because of their small size, nanoparticles are well-suited for effective drug delivery. The small size affects their movement through cell and tissue barriers. Their cellular uptake is easier when compared to larger drug delivery systems. Paclitaxel was encapsulated into the nanoparticles as a model drug, and to achieve specific targeting an aptamer directed against lung cancer cells was coupled to the nanoparticles surface. Nanoparticles were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), and nanotracking analysis (NTA). Also their surface charge was characterized from ζ-potential measurements. Their preparation was optimized and subsequently specificity of drug-loaded and aptamer-functionalized nanoparticles was investigated using lung cancer cells.

scholarly journals Design of a novel curcumin-soybean phosphatidylcholine complex-based targeted drug delivery systems

Drug Delivery ◽  
2017 ◽  
Vol 24 (1) ◽  
pp. 707-719 ◽  
Author(s):  
Jiajiang Xie ◽  
Yanxiu Li ◽  
Liang Song ◽  
Zhou Pan ◽  
Shefang Ye ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Targeted Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Targeted Drug ◽  
Targeted Drug Delivery Systems

scholarly journals pH-Responsive Release of Ruthenium Metallotherapeutics from Mesoporous Silica-Based Nanocarriers

Pharmaceutics ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 460
Author(s):  
Minja Mladenović ◽  
Ibrahim Morgan ◽  
Nebojša Ilić ◽  
Mohamad Saoud ◽  
Marija V. Pergal ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Inductively Coupled Plasma ◽  
Drug Delivery Systems ◽  
Mesoporous Silica Nanoparticles ◽  
Release Kinetics ◽  
Delivery Systems ◽  
Emission Spectrometry ◽  
Ph Responsive

Ruthenium complexes are attracting interest in cancer treatment due to their potent cytotoxic activity. However, as their high toxicity may also affect healthy tissues, efficient and selective drug delivery systems to tumour tissues are needed. Our study focuses on the construction of such drug delivery systems for the delivery of cytotoxic Ru(II) complexes upon exposure to a weakly acidic environment of tumours. As nanocarriers, mesoporous silica nanoparticles (MSN) are utilized, whose surface is functionalized with two types of ligands, (2-thienylmethyl)hydrazine hydrochloride (H1) and (5,6-dimethylthieno[2,3-d]pyrimidin-4-yl)hydrazine (H2), which were attached to MSN through a pH-responsive hydrazone linkage. Further coordination to ruthenium(II) center yielded two types of nanomaterials MSN-H1[Ru] and MSN-H2[Ru]. Spectrophotometric measurements of the drug release kinetics at different pH (5.0, 6.0 and 7.4) confirm the enhanced release of Ru(II) complexes at lower pH values, which is further supported by inductively coupled plasma optical emission spectrometry (ICP-OES) measurements. Furthermore, the cytotoxicity effect of the released metallotherapeutics is evaluated in vitro on metastatic B16F1 melanoma cells and enhanced cancer cell-killing efficacy is demonstrated upon exposure of the nanomaterials to weakly acidic conditions. The obtained results showcase the promising capabilities of the designed MSN nanocarriers for the pH-responsive delivery of metallotherapeutics and targeted treatment of cancer.

scholarly journals Self-aggregated nanoparticles of N -dodecyl,N ′-glycidyl(chitosan) as pH-responsive drug delivery systems for quercetin

2017 ◽  
Vol 135 (2) ◽  
pp. 45678 ◽  
Author(s):  
Rafael de Oliveira Pedro ◽  
Susana Pereira ◽  
Francisco M. Goycoolea ◽  
Carla C. Schmitt ◽  
Miguel G. Neumann
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Ph Responsive
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