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Total 344 results found since Jan 2013.

Construction of PEI ‐EGFR‐PD‐L1‐siRNA dual functional nano‐vaccine and therapeutic efficacy evaluation for lung cancer
ConclusionOur constructed lipid nanoparticles of tumor targeted therapy gene siRNA combination had the ability to target cells in vitro and downregulate the expression of PD-L1, realizing the tumor-specific expression of immune-stimulating cytokines, which is a highly efficient and safe targeted therapy nano-vaccine.
Source: Thoracic Cancer - September 19, 2022 Category: Cancer & Oncology Authors: Guixue Yang, Dong Zhou, Yin Dai, Yanqi Li, Jiang Wu, Quanxing Liu, Xufeng Deng Tags: ORIGINAL ARTICLE Source Type: research

Nanovaccine loaded with poly I:C and STAT3 siRNA robustly elicits anti-tumor immune responses through modulating tumor-associated dendritic cells in vivo.
Abstract Although cancer vaccine-based immunotherapy holds great potential for cancer treatment, tumor-induced dendritic cell (DC) dysfunction remains to be the major obstacle for developing effective vaccines. Compared with normal DCs, tumor-associated DCs (TADCs) are less matured with poor responsiveness to Toll-like receptor (TLR) stimulation, which has been related with STAT3 hyperactivity. In the present study, Poly I:C (PIC, a TLR3 agonist), STAT3 siRNA and OVA antigen were co-encapsulated by poly (ethylene glycol)-b-poly (l-lysine)-b-poly (l-leucine) (PEG-PLL-PLLeu) polypeptide micelles to generate PMP/OVA/...
Source: Biomaterials - December 6, 2014 Category: Materials Science Authors: Luo Z, Wang C, Yi H, Li P, Pan H, Liu L, Cai L, Ma Y Tags: Biomaterials Source Type: research

Development of Lipidoid Nanoparticles for siRNA Delivery to Neural Cells
AbstractLipidoid nanoparticles (LNPs) are the delivery platform in Onpattro, the first FDA-approved siRNA drug. LNPs are also the carriers in the Pfizer-BioNTech and Moderna COVID-19 mRNA vaccines. While these applications have demonstrated that LNPs effectively deliver nucleic acids to hepatic and muscle cells, it is unclear if LNPs could be used for delivery of siRNA to neural cells, which are notoriously challenging delivery targets. Therefore, the purpose of this study was to determine if LNPs could efficiently deliver siRNA to neurons. Because of their potential  delivery utility in either applications for the centra...
Source: The AAPS Journal - December 6, 2021 Category: Drugs & Pharmacology Source Type: research

The siRNA cocktail targeting IL-10 receptor and TGF-β receptor on dendritic cells potentiates tumor antigen-specific CD8(+) T cell immunity.
This article is protected by copyright. All rights reserved. PMID: 25753156 [PubMed - as supplied by publisher]
Source: Clinical and Developmental Immunology - March 8, 2015 Category: Allergy & Immunology Authors: Ahn YH, Hong SO, Kim JH, Noh KH, Song KH, Lee YH, Jeon JH, Kim DW, Seo JH, Kim TW Tags: Clin Exp Immunol Source Type: research

Inhibition of West Nile virus Replication by bifunctional siRNA targeting the NS2A and NS5 Conserved region.
CONCLUSION: Thus this bifunctional siRNA intervention paves the new way for therapeutic treatment of WNV disease. PMID: 29874999 [PubMed - as supplied by publisher]
Source: Current Gene Therapy - June 6, 2018 Category: Genetics & Stem Cells Authors: Karothia D, Dash PK, Parida MM, Bhagyawant S, Kumar JS Tags: Curr Gene Ther Source Type: research

The siRNA cocktail targeting IL‐10 receptor and TGF‐β receptor on dendritic cells potentiates tumor antigen‐specific CD8+ T cell immunity
This article is protected by copyright. All rights reserved.
Source: Clinical and Experimental Immunology - March 8, 2015 Category: Allergy & Immunology Authors: Ye‐Hyeon Ahn, Soon‐Oh Hong, Jin Hee Kim, Kyung Hee Noh, Kwon‐Ho Song, Young‐Ho Lee, Ju‐Hong Jeon, Dong‐Wan Kim, Jae Hong Seo, Tae Woo Kim Tags: Original Article Source Type: research

The siRNA cocktail targeting interleukin 10 receptor and transforming growth factor‐β receptor on dendritic cells potentiates tumour antigen‐specific CD8+ T cell immunity
In this study, we used small interfering RNA (siRNA) to silence the expression of endogenous molecules in DCs, which can sense immunosuppressive factors. Among the siRNAs targeting various immunosuppressive molecules, we observed that DCs transfected with siRNA targeting IL‐10 receptor alpha (siIL‐10RA) initiated the strongest antigen‐specific CD8+ T cell immune responses. The potency of siIL‐10RA was enhanced further by combining it with siRNA targeting TGF‐β receptor (siTGF‐βR), which was the next best option during the screening of this study, or the previously selected immunoadjuvant siRNA targeting phosp...
Source: Clinical and Experimental Immunology - May 17, 2015 Category: Allergy & Immunology Authors: Y.‐H. Ahn, S.‐O. Hong, J. H. Kim, K. H. Noh, K.‐H. Song, Y.‐H. Lee, J.‐H. Jeon, D.‐W. Kim, J. H. Seo, T. W. Kim Tags: Original Article Source Type: research

A Novel and Efficient Technology for Targeted Delivery of siRNA
The biological phenomenon of RNA interference (RNAi) has much promise for developing therapeutics to a variety of diseases. However, development of RNAi therapies remains mainly in preclinical stages largely because of difficulties in delivering small inhibitory RNAs (siRNA) and short hairpin RNAs (shRNA) into target cells. Although viral vector-based siRNA delivery systems have been widely used, their specificity and safety remains significant issue. Without a solution to this delivery problem, RNAi cannot fulfill its therapeutic promise. Investigators at the National Institutes of Health have developed novel compositions...
Source: NIH OTT Licensing Opportunities - January 1, 2009 Category: Research Authors: admin Source Type: research

siRNA Design to Silence the 3'UTR Region of Zika Virus.
Abstract The disease caused by the Zika virus (ZIKV) has positioned itself as one of the main public health problems in Mexico. One of the main reasons is it causes microcephaly and other birth defects. The transmission of ZIKV is through Aedes aegypti and Ae. albopictus mosquitoes, which are found in a larger space of the national territory. In addition, it can also be transmitted via blood transfusion, sexual relations, and maternal-fetal route. So far, there are no vaccines or specific treatments to deal with this infection. Currently, some new therapeutics such as small interfering RNAs (siRNAs) are able to re...
Source: Biomed Res - August 19, 2020 Category: Research Authors: Perez-Mendez M, Zárate-Segura P, Salas-Benito J, Bastida-González F Tags: Biomed Res Int Source Type: research

Inhibition of clinical pathogenic herpes simplex virus 1 strains with enzymatically created siRNA pools
This article is protected by copyright. All rights reserved
Source: Journal of Medical Virology - May 19, 2016 Category: Virology Authors: Henrik Paavilainen, Jenni Lehtinen, Alesia Romanovskaya, Michaela Nygårdas, Dennis H. Bamford, Minna M. Poranen, Veijo Hukkanen Tags: Research Article Source Type: research

siRNA rescues nonhuman primates from advanced Marburg and Ravn virus disease
Ebolaviruses and marburgviruses belong to the family Filoviridae and cause high lethality in infected patients. There are currently no licensed filovirus vaccines or antiviral therapies. The development of broad-spectrum therapies against members of the Marburgvirus genus, including Marburg virus (MARV) and Ravn virus (RAVV), is difficult because of substantial sequence variability. RNAi therapeutics offer a potential solution, as identification of conserved target nucleotide sequences may confer activity across marburgvirus variants. Here, we assessed the therapeutic efficacy of lipid nanoparticle (LNP) delivery of a sing...
Source: Journal of Clinical Investigation - November 7, 2017 Category: Biomedical Science Authors: Emily P. Thi, Chad E. Mire, Amy C.H. Lee, Joan B. Geisbert, Raul Ursic-Bedoya, Krystle N. Agans, Marjorie Robbins, Daniel J. Deer, Robert W. Cross, Andrew S. Kondratowicz, Karla A. Fenton, Ian MacLachlan, Thomas W. Geisbert Source Type: research

Silencing the target rhoptry neck protein (RON) gene responsible for the invasion of Toxoplasma gondii with siRNA transfection.
Authors: Yürük M, Aksoy T, Sivcan E, Nergiz H Abstract Toxoplasma gondii is a coccidian protozoan that causes toxoplasmosis is a common disease in Turkey as well as all over the world. It causes various clinical symptoms depending on the immune system status, age, or location of the disease. There is an organelle called the apical complex at the anterior end of the parasite. Rhoptry Neck Proteins (RONs), a component of this organelle, play a critical role in the formation of "moving junction" and parasitophorous vacuoles during host cell invasion. On the other hand, interfering RNA (iRNA) treatment options develo...
Source: Mikrobiyoloji Bulteni - January 27, 2019 Category: Microbiology Tags: Mikrobiyol Bul Source Type: research

The MRI-Visible Nanocomposite Facilitates the Delivery and Tracking of siRNA Loaded DC Vaccine in the Breast Cancer Model
Dendritic cell (DC) vaccines have recently been developed for the treatment of various cancers but often do not function as well as expected, primarily due to the highly complex in vivo immune environment. This proof-of-principle study aimed to test the feasibility of modulating the in vivo behaviors of DC vaccines (DCVs) by introducing siRNA-laden magnetic resonance (MR) imaging nanovectors into cells, while providing visible information on their homing to lymph nodes. The N-alkyl-PEI2k-LAC/SPIO nanocomposites were prepared and characterized, showing favorable properties of siRNA transfection and MRI labeling efficiency i...
Source: Frontiers in Oncology - February 5, 2021 Category: Cancer & Oncology Source Type: research

The effect of combined IL10 siRNA and CpG ODN as pathogen-mimicking microparticles on Th1/Th2 cytokine balance in dendritic cells and protective immunity against B cell lymphoma.
Abstract Success of an immunotherapy for cancer often depends on the critical balance of T helper 1 (Th1) and T helper 2 (Th2) responses driven by antigen presenting cells, specifically dendritic cells (DCs). Th1-driven cytotoxic T cell (CTL) responses are key to eliminating tumor cells. It is well established that CpG oligonucleotides (ODN), a widely studied Toll-like receptor 9 (TLR9) agonist, used to enhance Th1 response, also induces high levels of the anti-inflammatory, Th2-promoting cytokine IL10, which could dampen the resulting Th1 response. Biomaterials-based immunomodulatory strategies that can reduce IL...
Source: Biomaterials - April 7, 2014 Category: Materials Science Authors: Pradhan P, Qin H, Leleux JA, Gwak D, Sakamaki I, Kwak LW, Roy K Tags: Biomaterials Source Type: research

Synergistic inhibition of avian leukosis virus subgroup J replication by miRNA-embedded siRNA interference of double-target
Conclusions: These data demonstrated that the miRNA-embedded siRNA interference is an efficient method for inhibition of ALV-J replication, especially double targets.
Source: Epidemiologic Perspectives and Innovations - March 21, 2015 Category: Epidemiology Authors: Rongrong WeiXiaoqian MaGuihua WangHuijun GuoJianzhu LiuLingxiao FanZiqiang Cheng Source Type: research