Abstract:
:The present study was designed to test the hypothesis that programmed cell death-1 (PD-1) siRNA can downregulate PD-1 expression in macrophages in culture and in tumor tissues in mice and inhibit tumor growth in a mouse model. PD-1 siRNA was encapsulated in solid lipid nanoparticles (SLNs), and the physical properties of the resultant SLNs were characterized. The ability of the PD-1 siRNA-SLNs to downregulate PD-1 expression was confirmed in J774A.1 macrophages in culture and in tumor tissues in mice. Moreover, the antitumor activity of the PD-1 siRNA-SLNs was evaluated in a mouse model. The PD-1 siRNA-SLNs were roughly spherical, and their particle size, polydispersity index, and zeta potential were 141 ± 5 nm, 0.17 ± 0.02, and 20.7 ± 4.7 mV, respectively, with an siRNA entrapment efficiency of 98.9%. The burst release of the PD-1 siRNA from the SLNs was minimal. The PD-1 siRNA-SLNs downregulated PD-1 expression on J774A.1 macrophage cell surface as well as in macrophages in B16-F10 tumors pre-established in mice. In mice with pre-established B16-F10 tumors, the PD-1 siRNA-SLNs significantly inhibited the tumor growth, as compared with siRNA-SLNs prepared with non-functional, negative control siRNA. In conclusion, the PD-1 siRNA-SLNs inhibited tumor growth, likely related to their ability to downregulate PD-1 expression by tumor-associated macrophage (TAMs).
journal_name
AAPS PharmSciTechjournal_title
AAPS PharmSciTechauthors
Hanafy MS,Hufnagel S,Trementozzi AN,Sakran W,Stachowiak JC,Koleng JJ,Cui Zdoi
10.1208/s12249-021-01933-ysubject
Has Abstractpub_date
2021-01-31 00:00:00pages
60issue
2issn
1530-9932pii
10.1208/s12249-021-01933-yjournal_volume
22pub_type
杂志文章abstract::A transdermal drug delivery system (TDDS) is generally designed to deliver an active pharmaceutical ingredient (API) through the skin for systemic action. Permeation of an API through the skin is controlled by adjusting drug concentration, formulation composition, and patch design. A bilayer, drug-in-adhesive TDDS des...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-020-01682-4
更新日期:2020-06-04 00:00:00
abstract::Solubility challenge for a poorly water-soluble drug gets further intensified when it is weakly ionic because the most common solubility enhancement technique, salt formation, becomes less feasible. Salt screening for such drugs often concludes with either a difficult to crystalize salt or an unstable salt, leading th...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-017-0808-z
更新日期:2018-01-01 00:00:00
abstract::This research aimed to synthesize and evaluate mucoadhesive catechol-functionalized alginate (Cat-Alg) nanoparticles (NPs) for bladder cancer. Cat-Alg was synthesized using coupling chemistry, and the structure was verified using NMR and FT-IR. Cat-Alg NPs were generated by ionic gelation between the synthesized Cat-A...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-020-01752-7
更新日期:2020-07-31 00:00:00
abstract::The objective of the present study is to investigate the confounding effects, if any, of beta-cyclodextrins (βCDs) on corneal permeability coefficients obtained from in vitro transmembrane diffusion studies. Transcorneal permeability studies were carried out with 2-hydroxypropyl-beta-cyclodextrin (HPβCD) and randomly ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-015-0315-z
更新日期:2015-10-01 00:00:00
abstract::The present investigation was undertaken to fabricate modified transport fluconazole transdermal spray using ethyl cellulose and Eudragit RS100 as film-forming polymers. Eudragit RS100 (X(1)) and ethyl cellulose (X(2)) were selected as independent variables in 3(2) full factorial design, whereas drug transport in firs...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-009-9256-8
更新日期:2009-01-01 00:00:00
abstract::The release of propranolol hydrochloride from matrix tablets with hydroxy propyl methyl cellulose (HPMC K15M) or KollidonSR at different concentrations was investigated with a view to developing twice daily sustained release dosage form. A hydrophilic matrix-based tablet using different concentrations of HPMC K15M or ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-008-9092-2
更新日期:2008-01-01 00:00:00
abstract::A co-processed excipient was prepared from commercially available crystalline mannitol and α-chitin using direct compression as well as spray, wet, and dry granulation. The effect of the ratio of the two components, percentage of lubricant and particle size, on the properties of the prepared co-processed excipient has...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-010-9523-8
更新日期:2010-12-01 00:00:00
abstract::The present investigation was aimed at developing and optimizing a simple aqueous tablet-coating formulation and its process. 5-Fluorouracil (5-FU) was used to ascertain the relative lipophilic/hydrophilic behavior of the coating system. Optimization was performed by evaluating the adhesive force strength and cohesive...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9763-x
更新日期:2012-06-01 00:00:00
abstract::A simple but novel mixed surfactant system was designed to fabricate a self-nanoemulsifying drug delivery system (SNEDDS) based on hydrophilic-lipophilic balance (HLB) value. The impacts of HLB and molecular structure of surfactants on the formation of SNEDDS were investigated. After screening various oils and surfact...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0078-y
更新日期:2014-04-01 00:00:00
abstract::The objective of the present study is to investigate the effect of hydrocarbon chain length in 1,2-alkanediols on percutaneous absorption of metronidazole (MTZ). Twelve formulations (1,2-propanediol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol in 4% concentration, 1,2-hexanediol, and 1,2-heptanediol in 1% concentr...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-013-0066-7
更新日期:2014-04-01 00:00:00
abstract::Drying is one of the standard unit operations in the pharmaceutical industry and it is important to become aware of the circumstances that dominate during the process. The purpose of this study was to test microcapsulated thermochromic pigments as heat indicators in a fluid bed drying process. The indicator powders we...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-009-9351-x
更新日期:2010-03-01 00:00:00
abstract::Helicobacter pylori infection remains challenging as it mainly colonized beneath the deep gastric mucosa and adheres to epithelial cells of the stomach. Concanavalin-A (Con-A)-conjugated gastro-retentive poly (lactic-co-glycolic acid) (PLGA) nanoparticles of acetohydroxamic acid (AHA) and clarithromycin (CLR) were pre...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-015-0443-5
更新日期:2016-10-01 00:00:00
abstract::This work was aimed at evaluating the effect of a pharmaceutical cationic exchange resin (Amberlite IRP-69) on the properties of controlled release matrices using Methocel K4M (HPMC) or Ethocel 7cP (EC) as matrix formers. Diphenhydramine hydrochloride (DPH), which was cationic and water soluble, was chosen as a model ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-008-9129-6
更新日期:2008-01-01 00:00:00
abstract::The present work was undertaken with the objectives of improving the dissolution velocity, related oral bioavailability, and minimizing the fasted/fed state variability of repaglinide, a poorly water-soluble anti-diabetic active by exploring the principles of nanotechnology. Nanocrystal formulations were prepared by b...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0267-8
更新日期:2015-08-01 00:00:00
abstract::Gliclazide (GLI), a poorly water-soluble antidiabetic, was transformed into a glassy state by melt quench technique in order to improve its physicochemical properties. Chemical stability of GLI during formation of glass was assessed by monitoring thin-layer chromatography, and an existence of amorphous form was confir...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9760-0
更新日期:2012-06-01 00:00:00
abstract::To investigate the possibility of liquid proliposomes being carriers for oral delivery, nimodipine liquid proliposomes-based soft capsules (NPSC) were prepared. Nimodipine proliposomes were characterized by transmission electron microscopy (TEM), conversion rate from proliposomes to liposomes, entrapment efficiency, p...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-013-9924-6
更新日期:2013-03-01 00:00:00
abstract::The aim was to develop a liposomal oxymatrine conjugating D-alpha tocopheryl polyethylene glycol 1000 succinate (OMT-LIP) for enhanced therapeutics of hepatic fibrosis. OMT-LIP was prepared using the remote loading method. The influences of formulation compositions on the encapsulation efficiency of OMT-LIP were inves...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0086-y
更新日期:2014-06-01 00:00:00
abstract::The objective of this study was to determine the influence of mechanical stresses simulating gastrointestinal contraction forces of 2.0 N (stomach) and 1.2 N (intestine) on the gel properties and drug release characteristics from sustained release swelling and eroding hydrophilic matrices during dissolution studies. T...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0225-5
更新日期:2015-04-01 00:00:00
abstract::The aim of this work is to improve the understanding of the physicochemical mechanisms involved in the functionality of cross-linked carboxymethyl sodium starch (CCSS) as a tablet super disintegrant (SD). The behavior and properties of this SD (medium uptake, disintegration times, particle size, and rheology) was inve...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-014-0121-z
更新日期:2015-04-01 00:00:00
abstract::In community settings, IM injection of 0.3 mg epinephrine (Epi) using an auto-injector is the drug of choice for treatment of anaphylaxis. Previously, a taste-masking (TM) formulation of fast-disintegrating sublingual tablets (FDSTs) was developed in our lab. Also, Epi was micronized (Epi-MC) successfully and reduced ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-018-1171-4
更新日期:2018-11-01 00:00:00
abstract::The objectives of this study are to enhance cellular accumulation of gemcitabine with chitosan/glyceryl monooleate (GMO) nanostructures, and to provide significant increase in cell death of human pancreatic cancer cells in vitro. The delivery system was prepared by a multiple emulsion solvent evaporation method. The n...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-010-9393-0
更新日期:2010-03-01 00:00:00
abstract::The purpose of this study was to prepare ginkgolide B (GB) lyophilized powder for injection with excellent appearance and stable quality through a formulation screening and by optimizing the freeze-drying process. Cremophor EL as a solubilizer, PEG 400 as a latent solvent, and mannitol as an excipient were mixed to in...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-017-0858-2
更新日期:2018-02-01 00:00:00
abstract::This investigation was undertaken to evaluate practical feasibility of site specific pulmonary delivery of liposomal encapsulated Dapsone (DS) dry powder inhaler for prolonged drug retention in lungs as an effective alternative in prevention of Pneumocystis carinii pneumonia (PCP) associated with immunocompromised pat...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-007-9024-6
更新日期:2008-01-01 00:00:00
abstract::Buccal bioadhesive films, releasing topical drugs in the oral cavity at a slow and predetermined rate, provide distinct advantages over traditional dosage forms. The aim of present study was to prepare and evaluate buccal bioadhesive films of clotrimazole for oral candidiasis. The film was designed to release the drug...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-008-9083-3
更新日期:2008-01-01 00:00:00
abstract::The purpose of this study was to investigate the effect of particle size, storage temperature, and duration of storage on the physical stability and morphology of polylactic-co-glycolic acid (PLGA) nanospheres and microspheres. PLGA nanospheres and microspheres containing the fluorescent dye, Bodipy, were prepared in ...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/pt050453
更新日期:2004-09-13 00:00:00
abstract::The aim of the present study was to develop a spilanthol emulsion and investigate the effect of oil and drug physicochemical properties on drug release and skin retention at molecular level. Formulation factors including oil, emulsifier, and humectant were investigated by in vitro skin retention/permeation study and t...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-019-1454-4
更新日期:2019-06-20 00:00:00
abstract::Due to the fact that the number of new poorly soluble active pharmaceutical ingredients is increasing, it is important to investigate the possibilities of improvement of their solubility in order to obtain a final pharmaceutical formulation with enhanced bioavailability. One of the strategies to increase drug solubili...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/s12249-012-9786-3
更新日期:2012-06-01 00:00:00
abstract::The use of amorphous solid dispersions to improve the bioavailability of active ingredients from the BCS II and IV classifications continues to gain interest in the pharmaceutical industry. Over the last decade, methods for generating amorphous solid dispersions have been well established in commercially available pro...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章,评审
doi:10.1208/s12249-017-0861-7
更新日期:2018-07-01 00:00:00
abstract::The objective of the present study was to develop a hydrodynamically balanced system for celecoxib as single-unit floating capsules. Various grades of low-density polymers were used for formulation of these capsules. The capsules were prepared by physical blending of celecoxib and the polymer in varying ratios. The fo...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/pt0804119
更新日期:2007-12-28 00:00:00
abstract::A transmission near infrared (NIR) spectroscopic method has been developed for the nondestructive determination of drug content in tablets with less than 1% weight of active ingredient per weight of formulation (m/m) drug content. Tablets were manufactured with drug concentrations of approximately 0.5%, 0.7%, and 1.0%...
journal_title:AAPS PharmSciTech
pub_type: 杂志文章
doi:10.1208/pt070129
更新日期:2006-03-24 00:00:00