Amphiphilic designer nano-carriers for controlled release: from drug delivery to diagnostics

MedChemComm ◽  
2014 ◽  
Vol 5 (11) ◽  
pp. 1602-1618 ◽  
Author(s):  
Malinda Salim ◽  
Hiroyuki Minamikawa ◽  
Akihiko Sugimura ◽  
Rauzah Hashim
Keyword(s):  
Drug Delivery ◽  
Liquid Crystal ◽  
Controlled Release ◽  
Targeted Delivery ◽  
Design Considerations

Our review highlights lipid liquid crystal nanocarriers, essentially their design considerations and sugar-based materials for specific targeted delivery.

scholarly journals Amino acid-modified PAMAM dendritic nanocarriers as effective chemotherapeutic drug vehicles in cancer treatment: a study using zebrafish as a cancer model

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20682-20690 ◽  
Author(s):  
Szu-Yuan Wu ◽  
Hsiao-Ying Chou ◽  
Hsieh-Chih Tsai ◽  
Rajeshkumar Anbazhagan ◽  
Chiou-Hwa Yuh ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Amino Acid ◽  
Controlled Release ◽  
Cancer Treatment ◽  
Targeted Delivery ◽  
Chemotherapeutic Drug ◽  
Cancer Model

The use of nanomaterials for drug delivery offers many advantages including the controlled release and their targeted delivery.

scholarly journals Targeted Delivery of Narrow-Spectrum Protein Antibiotics to the Lower Gastrointestinal Tract in a Murine Model of Escherichia coli Colonization

2021 ◽  
Vol 12 ◽  
Author(s):  
Nuria Carpena ◽  
Kerry Richards ◽  
Teresita D. J. Bello Gonzalez ◽  
Alberto Bravo-Blas ◽  
Nicholas G. Housden ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Drug Delivery ◽  
Controlled Release ◽  
Animal Models ◽  
Targeted Delivery ◽  
Intestinal Colonization ◽  
Ph Responsive ◽  
Human Gut ◽  
E Coli

Bacteriocins are narrow-spectrum protein antibiotics that could potentially be used to engineer the human gut microbiota. However, technologies for targeted delivery of proteins to the lower gastrointestinal (GI) tract in preclinical animal models are currently lacking. In this work, we have developed methods for the microencapsulation of Escherichia coli targeting bacteriocins, colicin E9 and Ia, in a pH responsive formulation to allow their targeted delivery and controlled release in an in vivo murine model of E. coli colonization. Membrane emulsification was used to produce a water-in-oil emulsion with the water-soluble polymer subsequently cross-linked to produce hydrogel microcapsules. The microcapsule fabrication process allowed control of the size of the drug delivery system and a near 100% yield of the encapsulated therapeutic cargo. pH-triggered release of the encapsulated colicins was achieved using a widely available pH-responsive anionic copolymer in combination with alginate biopolymers. In vivo experiments using a murine E. coli intestinal colonization model demonstrated that oral delivery of the encapsulated colicins resulted in a significant decrease in intestinal colonization and reduction in E. coli shedding in the feces of the animals. Employing controlled release drug delivery systems such as that described here is essential to enable delivery of new protein therapeutics or other biological interventions for testing within small animal models of infection. Such approaches may have considerable value for the future development of strategies to engineer the human gut microbiota, which is central to health and disease.

Controlled release and targeted delivery to cancer cells of doxorubicin from polysaccharide-functionalised single-walled carbon nanotubes

2015 ◽  
Vol 3 (9) ◽  
pp. 1846-1855 ◽  
Author(s):  
Yunfei Mo ◽  
Haowen Wang ◽  
Jianghui Liu ◽  
Yong Lan ◽  
Rui Guo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Controlled Release ◽  
Cancer Cells ◽  
Targeted Delivery ◽  
Water Solubility ◽  
Single Walled Carbon Nanotubes ◽  
Innovative Drug ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Carboxyl single-walled carbon nanotubes (SWNTs) were used to construct an innovative drug delivery system by modification with chitosan (CHI) to enhance water solubility and biocompatibility.

Devices for Controlled Release Advancements and Effectiveness

2018 ◽  
pp. 103-134
Author(s):  
Arvind Kumar Singh Chandel
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Targeted Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Zero Order ◽  
Release Mechanism ◽  
Release Drug ◽  
Metered Dose ◽  
Zero Order Release

The term control release means the release of the molecules from any reservoir in very precise and constant amounts and following zero-order or near-to-zero-order release kinetics. This type of formulation and device has a huge market over the medical world. The basic foundation of sustained release drug delivery system enhances the biopharmaceutical and pharmacodynamics pharmacokinetic properties of a drug in such a way that its usefulness is exploited, side-effects are reduced, and cure of the disease is attained easily. The international controlled-release drug delivery technology market has been divided on the basis of technology, application, release mechanism, and geography. This chapter describes these topics: metered dose inhalers, transdermal and ocular patches, drug eluting stents, activation-modulated drug delivery systems, polymer coating systems microelectromechanical technology, implants, micro reservoir partition controlled drug delivery systems, hydrophilic polymer matrix systems, targeted delivery, enzyme activated device.

MRI-visible liposome nanovehicles for potential tumor-targeted delivery of multimodal therapies

Nanoscale ◽  
2015 ◽  
Vol 7 (30) ◽  
pp. 12843-12850 ◽  
Author(s):  
Lili Ren ◽  
Shizhen Chen ◽  
Haidong Li ◽  
Zhiying Zhang ◽  
Chaohui Ye ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Real Time ◽  
Drug Delivery System ◽  
Delivery System ◽  
Targeted Drug Delivery ◽  
Targeted Delivery ◽  
Liposomal Drug ◽  
Targeted Drug ◽  
Liposomal Drug Delivery

The theranostic liposomal drug delivery system can act as an effective nanoplatform integrating targeted drug delivery, controlled release, MRI real-time monitoring and diagnostic functions.

Development and Characterization Colchicine-Loaded PEGylated Gelatin Nanoparticles for Targeted Delivery to Tumor

2013 ◽  
Vol 6 (2) ◽  
pp. 2058-2063
Author(s):  
G D Chandrethiya ◽  
P K Shelat ◽  
M N Zaveri
Keyword(s):  
Drug Delivery ◽  
Targeted Delivery ◽  
High Performance ◽  
Entrapment Efficiency ◽  
Stability Study ◽  
Spherical Particles ◽  
Precipitation Method ◽  
Antitumoral Activity ◽  
Gelatin Nanoparticles

PEGylated gelatin nanoparticles loaded with colchicine were prepared by ethanol precipitation method. Poly-(ethylene glycol)-5000-monomethylether (MPEG 5000), a hydrophilic polymer, was used to pegylate gelatin.  Gluteraldehyde was used as cross-linking agent. To obtain a high quality product, major formulation parameters were optimized.  Spherical particles with mean particles of 193 nm were measured by a Malvern particle size analyzer. Entrapment efficiency was found to be 71.7 ± 1.4% and determined with reverse phase high performance liquid charomatography (RP-HPLC). The in vitro drug release study was performed by dialysis bag method for a period of 168 hours. Lyophilizaton study showed sucrose at lower concentrations proved the best cryoprotectant for this formulation.  Stability study revealed that lyophilized nanoparticles were equally effective (p < 0.05) after one year of storage at 2-8°C with ambient humidity. In vitro antitumoral activity was accessed using the MCF-7 cell line by MTT assay.  The IC50 value was found to be 0.034 μg/ml for the prepared formulation. The results indicate that PEGylated gelatin nanoparticles could be utilized as a potential drug delivery for targeted drug delivery of tumors.  

Hydrogel-clay Nanocomposites as Carriers for Controlled Release

2020 ◽  
Vol 27 (6) ◽  
pp. 919-954 ◽  
Author(s):  
Raluca Ianchis ◽  
Claudia Mihaela Ninciuleanu ◽  
Ioana Catalina Gifu ◽  
Elvira Alexandrescu ◽  
Cristina Lavinia Nistor ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Hybrid Materials ◽  
Pharmaceutical Formulations ◽  
Tree Of Life ◽  
Present Review ◽  
Clay Nanocomposites ◽  
Delivery Platform ◽  
Complex Hybrid

The present review aims to summarize the research efforts undertaken in the last few years in the development and testing of hydrogel-clay nanocomposites proposed as carriers for controlled release of diverse drugs. Their advantages, disadvantages and different compositions of polymers/biopolymers with diverse types of clays, as well as their interactions are discussed. Illustrative examples of studies regarding hydrogel-clay nanocomposites are detailed in order to underline the progressive researches on hydrogel-clay-drug pharmaceutical formulations able to respond to a series of demands for the most diverse applications. Brief descriptions of the different techniques used for the characterization of the obtained complex hybrid materials such as: swelling, TGA, DSC, FTIR, XRD, mechanical, SEM, TEM and biology tests, are also included. Enlightened by the presented data, we can suppose that hydrogel-clay nanocomposites will still be a challenging subject of global assiduous researches. We can dare to dream to an efficient drug delivery platform for the treatment of multiple affection concomitantly, these being undoubtedly like ”a tree of life” bearing different kinds of fruits and leaves proper for human healing.

Improved Therapeutic Efficacy of Topotecan Against A549 Lung Cancer Cells with Folate-targeted Topotecan Liposomes

2020 ◽  
Vol 21 (11) ◽  
pp. 902-909
Author(s):  
Jingxin Zhang ◽  
Weiyue Shi ◽  
Gangqiang Xue ◽  
Qiang Ma ◽  
Haixin Cui ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Cancer Cells ◽  
Targeted Delivery ◽  
Therapeutic Efficacy ◽  
Drug Delivery Systems ◽  
Lung Tumor ◽  
A549 Cells ◽  
Delivery Systems ◽  
Lung Cancer Cells

Background: Among all cancers, lung cancer has high mortality among patients in most of the countries in the world. Targeted delivery of anticancer drugs can significantly reduce the side effects and dramatically improve the effects of the treatment. Folate, a suitable ligand, can be modified to the surface of tumor-selective drug delivery systems because it can selectively bind to the folate receptor, which is highly expressed on the surface of lung tumor cells. Objective: This study aimed to construct a kind of folate-targeted topotecan liposomes for investigating their efficacy and mechanism of action in the treatment of lung cancer in preclinical models. Methods: We conjugated topotecan liposomes with folate, and the liposomes were characterized by particle size, entrapment efficiency, cytotoxicity to A549 cells and in vitro release profile. Technical evaluations were performed on lung cancer A549 cells and xenografted A549 cancer cells in female nude mice, and the pharmacokinetics of the drug were evaluated in female SD rats. Results: The folate-targeted topotecan liposomes were proven to show effectiveness in targeting lung tumors. The anti-tumor effects of these liposomes were demonstrated by the decreased tumor volume and improved therapeutic efficacy. The folate-targeted topotecan liposomes also lengthened the topotecan blood circulation time. Conclusion: The folate-targeted topotecan liposomes are effective drug delivery systems and can be easily modified with folate, enabling the targeted liposomes to deliver topotecan to lung cancer cells and kill them, which could be used as potential carriers for lung chemotherapy.

Sign in / Sign up

Export Citation Format

Share Document