Abstract:
:Gene delivery systems face the problem not only of the route toward the cell and tissues in question, but also of the molecularly crowded environment of both the cytoplasm and the nucleus itself. One of the physical barriers in the cytoplasm for diffusing nanoparticles is an actin network. Here, we describe the finding that a self-fluorescent sixth generation cationic dendrimer (6 nm in diameter) interacts reversibly and possibly electrostatically with actin filaments in vitro. Not only does this interaction slow the diffusion of the dendrimer but it also affects actin polymerization in a biphasic manner. At low concentrations the dendrimer behaves like a G-binding actin protein, retarding actin polymerization, whereas at high concentrations the dendrimer acts as a nucleating protein accelerating the polymerization. Thus in vivo the diffusion of a dendrimer carrier such as this has both physical and chemical elements: by decreasing polymerization it might accelerate its own transport, and by enhancing actin polymerization retard it. This finding suggests that such a dendrimer may have a role as an anticancer agent through its inhibitory effect on actin polymerization.
journal_name
J Drug Targetjournal_title
Journal of drug targetingauthors
Ruenraroengsak P,Florence ATdoi
10.3109/1061186X.2010.521159subject
Has Abstractpub_date
2010-12-01 00:00:00pages
803-11issue
10eissn
1061-186Xissn
1029-2330journal_volume
18pub_type
杂志文章abstract::Intravenous targeting of anticancer agents should improve both efficacy and therapeutic index. However, rational design of targeting constructs requires detailed definition of receptor targets and must take account of polarised tissue architecture that may restrict access to chosen receptors from the bloodstream. Bact...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860701195510
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:DNA hybridization allows the preparation of nanoscale DNA structures with desired shape and size. DNA structures using simple base pairing can be used for the delivery of drug molecules into the cells. Since DNA carries multiple negative charges, their cellular uptake efficiency is low. Thus, the modificatio...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2016.1144059
更新日期:2016-09-01 00:00:00
abstract::Notch pathway was found to be activated in most glioblastomas (GBMs), underlining the importance of Notch in formation and recurrence of GBM. In this study, a Notch inhibitory peptide, dominant negative MAML (dnMAML), was conjugated to elastin-like polypeptide (ELP) for tumor targeted delivery. ELP is a thermally resp...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/1061186X.2017.1289537
更新日期:2017-07-01 00:00:00
abstract::The objective of this study was to investigate the factors for enhancing the susceptibility of cancer cells to chemotherapeutic drug by ultrasound microbubbles. Ultrasound (US) combined with phospholipid-based microbubbles (MB) was used to enhance the susceptibility of colon cancer cell line SWD-620 to anticancer drug...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611860903434043
更新日期:2010-07-01 00:00:00
abstract::As a percutaneous sustained-release preparation, insulin micropiles (MPs) were prepared with biodegradable polymers poly(lactic acid) (PLA), poly(ϵ-caprolactone) (PCL) and poly(lactic-co-glycolic acid) (PLGA) as the base. The obtained PLA, PCL, and PLGA MPs of which the insulin:polymer ratio was 1:2 were administered ...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2010.492521
更新日期:2011-04-01 00:00:00
abstract::Local treatment of middle ear (ME) disease currently requires surgical penetration of the tympanic membrane (TM). We previously discovered 12-mer peptides that are actively transported across the intact TM, a process that could be used for non-invasive drug delivery into the ME. To optimise transport and provide furth...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/1061186X.2017.1347791
更新日期:2018-02-01 00:00:00
abstract::An oral vaccine formulation comprised of starch microparticles with conjugated antigens is being developed. In this report we have examined the uptake of such microparticles by the intestinal mucosa and examined whether the conjugated antigen can influence the uptake. Two model antigens were used: recombinant cholera ...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/1061186042000223662
更新日期:2004-06-01 00:00:00
abstract::Cytokine inhibiting drugs are much more effective when delivered intracellularly to phagocytic cells in the microencapsulated form. Dexamethasone is a powerful inhibitor of TNF-α cytokine through inhibition of NF-κB which is a gene regulator of multiple pro-inflammatory cytokines. We have determined the effect of micr...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2011.561856
更新日期:2011-11-01 00:00:00
abstract::In order to facilitate the intracellular delivery of macromolecules, Pep-1 peptide-modified liposomal (Pep1-Lipo) nanocarriers were designed and examined for their in vitro cell translocation capability. Pep-1 peptides were coupled via thiol-maleimide linkage to small unilamellar vesicles composed of phosphatidylcholi...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2010.511226
更新日期:2011-08-01 00:00:00
abstract::Drug systems targeting tumor cells using basic fibroblast growth factor (bFGF) have been widely reported. In this study, the peptide KRTGQYKLC (bFGFp), containing cysteine at the carboxyl termination of the bFGF-derived peptide, was applied as a novel ligand targeting tumor cells. bFGFp was conjugated with bovine seru...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860600849498
更新日期:2006-09-01 00:00:00
abstract::Polyethylene glycol-modified GoldMag nanoparticles (PGMNs) were synthesized and characterized by several analysis including transmission electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, and vibrating sample magnetometer. Here, we showed that the composite nanoparticles have a sat...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611861003801842
更新日期:2011-04-01 00:00:00
abstract::I125 radiolabelled HSA (HSA-I125) was utilised as a probe to quantify protein adsorption onto polystyrene (PS) and Poloxamine 908 coated PS (PS-908) particles. Upon ageing of the HSA-I125 a dramatic increase in the amount of protein adsorbed onto the two particle systems was observed. This phenomenon was not due to la...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611869708995849
更新日期:1997-01-01 00:00:00
abstract::Oleanolic acid (OA) is a pentacyclic triterpenoid found in various plant species. Triterpenoid compounds have been shown to inhibit tumor proliferation and to induce apoptosis in cancer cells. We synthesized an OA derivative and evaluated its inhibitory effects on cell proliferation in human colon cancer. Radioisotope...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2013.851684
更新日期:2014-10-07 00:00:00
abstract::Pathophysiological molecules in the extracellular environment offer excellent targets that can be exploited for designing drug targeting systems. Matrix metalloproteases (MMPs) are a family of extracellular proteolytic enzymes that are characterized by their overexpression or overactivity in several pathologies. Over ...
journal_title:Journal of drug targeting
pub_type: 杂志文章,评审
doi:10.1080/10611860600968967
更新日期:2007-01-01 00:00:00
abstract::Submicron sized hydrophobic and hydrophilic albumin microspheres (MS) were prepared using a chemical crosslinking technique. Spermine was linked to the surface of the hydrophilic MS. The degree of hydrophobicity for these three types of MS was investigated using a novel technique of sedimentation volume. The surface t...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611869509015933
更新日期:1995-01-01 00:00:00
abstract::Solid tumors such as breast cancer have historically provided many challenges to anti-cancer therapy. Therapeutic hurdles to drug penetration in solid tumors include heterogeneous vascular supply and high interstitial pressures within tumor tissue, particularly in necrotic zones, lower pH and presence of leaky vascula...
journal_title:Journal of drug targeting
pub_type: 杂志文章,评审
doi:10.1080/10611860600809112
更新日期:2006-06-01 00:00:00
abstract::Despite the advantages of drug delivery through skin, transdermal drug delivery is only used with a small subset of drugs because most compounds cannot cross the skin at therapeutically useful rates. Recently, a new concept known as microneedle was introduced and could be used to pierce effectively to deliver drugs us...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611860903115274
更新日期:2010-01-01 00:00:00
abstract::Chemotherapy is still a major challenge for in vivo drug targeting to macrophages. Toxicity remains the major obstacle for the most potent drugs already known in the therapy of leishmaniasis. Thus, new drugs and new delivery systems are sought. By using different vesicular delivery modes e.g. liposomes, niosomes, micr...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/106118021000072681
更新日期:2002-12-01 00:00:00
abstract::The aim of the present study was to evaluate the transfer of N-acetyl-p-aminobenzoic acid (AcPABA) across the rat term placenta and the rat small intestine and to compare it with that of its parent drug p-aminobenzoic acid (PABA). Umbilical perfusion of the rat term placenta was used to determine the materno-fetal tra...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611869808995875
更新日期:1998-01-01 00:00:00
abstract::The high-molecular-weight soluble aggregates of Fab fragments of murine antibodies against cardiac myosin were prepared as a potential long-circulating and low immunogenic pharmaceutical carriers by conjugation of thiolated Fab and Fab modified with succinimidyl 3-(2-pyridyldithio)propionate. The clearance time and bi...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611869808997880
更新日期:1998-01-01 00:00:00
abstract::Glioma is one of the most commonly occurring malignant brain tumours which need proper treatment strategy. The current therapies for treating glioma like surgical resection, radiotherapy, and chemotherapy have failed in achieving satisfactory results and this forms a rationale for the development of novel drug deliver...
journal_title:Journal of drug targeting
pub_type: 杂志文章,评审
doi:10.3109/1061186X.2014.916712
更新日期:2014-07-01 00:00:00
abstract::The transport of 125I-radiolabelled latex nanoparticles across the nasal mucosa of rats was studied using a range of particle sizes and surface coatings. Translocation of the particles into the blood stream was examined by means of monitoring the radiolabel associated with the particles. Particles were detected in the...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611860108997935
更新日期:2001-01-01 00:00:00
abstract::Micro-needle arrays increase skin permeability by forming channels through the outer physical barrier, without stimulating pain receptors populating the underlying dermis. It was postulated that micro-needle arrays could facilitate transfer of DNA to human skin epidermis for cutaneous gene therapy applications. Platin...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860500383705
更新日期:2005-08-01 00:00:00
abstract::Gelatin microspheres (ms) and gelatin/BSA (bovine serum albumin) or gelatin/alginate ms were prepared by encapsulating fluorescein isothiocyanate (FITC) labeled dextran or interferon alpha (IFN-alpha). Ms were obtained by an emulsion-solvent-extraction method. Gelatin and gelatin/BSA ms were obtained by treating water...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/10611869908996851
更新日期:1999-01-01 00:00:00
abstract:INTRODUCTION:Growing interest in the application of nanotechnology to treat lymphatic filariasis (LF) implies that the imminent medical arsenal of this interesting technology is attractive for health authorities. Currently, they are completely dependent on friendly oral mass drug (anti-filarials) administration to elim...
journal_title:Journal of drug targeting
pub_type: 杂志文章,评审
doi:10.3109/1061186X.2013.832766
更新日期:2014-01-01 00:00:00
abstract::Insulin and dexamethasone were encapsulated in poly(lactic-co-glycolic acid) (PLGA) microspheres to induce adipogenesis for potential applications in soft tissue reconstruction. Release kinetics and bioactivity of the drugs were examined. Surface morphology and diameter of the PLGA microspheres was evaluated using sca...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860802669231
更新日期:2009-04-01 00:00:00
abstract::DNA nanoparticles (DNA NPs), which self-assemble from DNA plasmids and poly-L-lysine (pLL)-polyethylene glycol (PEG) block copolymers, transfect several cell types in vitro and in vivo with minimal toxicity and immune response. To further enhance the gene transfer efficiency of DNA NP and control its tropism, we estab...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.3109/1061186X.2012.712128
更新日期:2012-09-01 00:00:00
abstract::Nanoparticles have shown great promise in the treatment of cancer, with a demonstrated potential in targeted drug delivery. Among a myriad of nanocarriers that have been recently developed, dendrimers have attracted a great deal of scientific interests due to their unique chemical and structural properties that allow ...
journal_title:Journal of drug targeting
pub_type: 杂志文章,评审
doi:10.3109/1061186X.2015.1052077
更新日期:2015-01-01 00:00:00
abstract::Recent research into the complex and varied components of rheumatoid arthritis (RA) is leading to the development of more effective targets for pharmaceutical approach than even before. Current treatment of RA frequently includes the use of nonsteroidal anti-inflammatory drugs, such as Diclofenac sodium (DFNa) in spit...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860701725191
更新日期:2008-01-01 00:00:00
abstract::A promising strategy to carry genetic material to brain cells either in vitro or in vivo is using the LDL receptor (LDLr) on blood-brain barrier. LDLr naturally help to low density lipoproteins (LDL(S)) transporting across the BBB by endocytosis. Here we present the idea of using the LDLr-mediated pathway for transpor...
journal_title:Journal of drug targeting
pub_type: 杂志文章
doi:10.1080/10611860601148908
更新日期:2007-04-01 00:00:00