- Nanobiomaterial-Based Short Interfering RNA Delivery Systems

2012 ◽  
pp. 496-521
Keyword(s):  
Delivery Systems ◽  
Short Interfering Rna ◽  
Interfering Rna

SiRNA technology, the gene therapy of the future?

2008 ◽  
Vol 149 (4) ◽  
pp. 153-159 ◽  
Author(s):  
Zsuzsanna Rácz ◽  
Péter Hamar
Keyword(s):  
Gene Therapy ◽  
Short Interfering Rna ◽  
The Future ◽  
Interfering Rna

A genetikában új korszak kezdődött 17 éve, amikor a petúniában felfedezték a koszuppressziót. Később a koszuppressziót azonosították a növényekben és alacsonyabb rendű eukariótákban megfigyelt RNS-interferenciával (RNSi). Bár a növényekben ez ősi vírusellenes gazdaszervezeti védekezőmechanizmus, emlősökben az RNSi élettani szerepe még nincs teljesen tisztázva. Az RNSi-t rövid kettős szálú interferáló RNS-ek (short interfering RNA, siRNS) irányítják. A jelen cikkben összefoglaljuk az RNSi történetét és mechanizmusát, az siRNS-ek szerkezete és hatékonysága közötti összefüggéseket, a célsejtbe való bejuttatás virális és nem virális módjait. Az siRNS-ek klinikai alkalmazásának legfontosabb akadálya az in vivo alkalmazás. Bár a hidrodinamikus kezelés állatokban hatékony, embereknél nem alkalmazható. Lehetőséget jelent viszont a szervspecifikus katéterezés. A szintetizált siRNS-ek ismert mellékhatásait szintén tárgyaljuk. Bár a génterápia ezen új területén számos problémával kell szembenézni, a sikeres in vitro és in vivo kísérletek reményt jelentenek emberi betegségek siRNS-sel történő kezelésére.

scholarly journals Redox Responsive Pluronic Micelle Mediated Delivery of Functional siRNA: A Modular Nano-Assembly for Targeted Delivery

2021 ◽  
Author(s):  
Sandeep Kadekar ◽  
Ganesh N. Nawale ◽  
Vignesh Kumar Rangasami ◽  
Vadim Le Joncour ◽  
Pirjo Laakkonen ◽  
...  
Keyword(s):  
Targeted Delivery ◽  
Unmet Need ◽  
Short Interfering Rna ◽  
Site Specific ◽  
Redox Responsive ◽  
Interfering Rna

There is an unmet need to develop strategies that allow site-specific delivery of short interfering RNA (siRNA) without any associated toxicity. To address this challenge, we have developed a novel...

scholarly journals Effect of base modifications on structure, thermodynamic stability, and gene silencing activity of short interfering RNA

RNA ◽  
2007 ◽  
Vol 13 (8) ◽  
pp. 1301-1316 ◽  
Author(s):  
K. Sipa ◽  
E. Sochacka ◽  
J. Kazmierczak-Baranska ◽  
M. Maszewska ◽  
M. Janicka ◽  
...  
Keyword(s):  
Gene Silencing ◽  
Thermodynamic Stability ◽  
Short Interfering Rna ◽  
Base Modifications ◽  
Interfering Rna

scholarly journals Release of siRNA from Liposomes Induced by Curcumin

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Kazuyo Fujita ◽  
Yoshie Hiramatsu ◽  
Hideki Minematsu ◽  
Masaharu Somiya ◽  
Shun’ichi Kuroda ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Dose Response ◽  
Small Interfering Rna ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Experimental Conditions ◽  
Large Molecules ◽  
Maximal Induction ◽  
Interfering Rna ◽  
Bell Shaped Curve

Liposomes are a potential carrier of small interfering RNA (siRNA) for drug delivery systems (DDS). In this study, we searched for a molecule capable of controlling the release of siRNA from a certain type of liposomes and found that curcumin could induce the release of siRNA from the liposomes encapsulating siRNA within 30 min. However, the release of siRNA from the liposomes by curcumin showed a unique dose-response (i.e., bell-shaped curve) with a maximal induction at around 60 μg/ml of curcumin. Liposomal lipid compositions and temperatures influenced the efficiency in the release of siRNA induced by curcumin. About 10% of curcumin at a 60 μg/ml dose was incorporated into the liposomes within 30 min under our experimental conditions. Our results suggest a possibility that curcumin is useful in controlling the permeability of liposomes carrying large molecules like siRNA.

scholarly journals Cymbidium Ringspot Virus Harnesses RNA Silencing To Control the Accumulation of Virus Parasite Satellite RNA

2008 ◽  
Vol 82 (23) ◽  
pp. 11851-11858 ◽  
Author(s):  
Vitantonio Pantaleo ◽  
József Burgyán
Keyword(s):  
Rna Silencing ◽  
Sequence Similarity ◽  
Helper Virus ◽  
Ringspot Virus ◽  
Silencing Suppressor ◽  
Short Interfering Rna ◽  
Satellite Rna ◽  
The Cost ◽  
Interfering Rna ◽  
Rna Replicon

ABSTRACT Cymbidium ringspot virus (CymRSV) satellite RNA (satRNA) is a parasitic subviral RNA replicon that replicates and accumulates at the cost of its helper virus. This 621-nucleotide (nt) satRNA species has no sequence similarity to the helper virus, except for a 51-nt-long region termed the helper-satellite homology (HSH) region, which is essential for satRNA replication. We show that the accumulation of satRNA strongly depends on temperature and on the presence of the helper virus p19 silencing suppressor protein, suggesting that RNA silencing plays a crucial role in satRNA accumulation. We also demonstrate that another member of the Tombusvirus genus, Carnation Italian ringspot virus (CIRV), supports satRNA accumulation at a higher level than CymRSV. Our results suggest that short interfering RNA (siRNA) derived from CymRSV targets satRNA more efficiently than siRNA from CIRV, possibly because of the higher sequence similarity between the HSH regions of the helper and CIRV satRNAs. RNA silencing sensor RNA carrying the putative satRNA target site in the HSH region was efficiently cleaved when transiently expressed in CymRSV-infected plants but not in CIRV-infected plants. Strikingly, replacing the CymRSV HSH box2 sequence with that of CIRV restores satRNA accumulation both at 24°C and in the absence of the p19 suppressor protein. These findings demonstrate the extraordinary adaptation of this virus to its host in terms of harnessing the antiviral silencing response of the plant to control the virus parasite satRNA.

Sign in / Sign up

Export Citation Format

Share Document