Evaluation of siRNA and Cationic Liposomes Complexes as a Model for in vitro siRNA Delivery to Cancer Cells

This study aims to investigate the effect of different molar charge ratios (R+/-) between positive charges from microfluidics-produced cationic liposomes (CL) (egg phosphatidylcholine, 1,2-dioleoyl-3-trimethylammonium-propane and 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine) and negative charges from siRNA and on physico-chemical and morphological properties of the lipoplexes (CL/siRNA) as well as their in vitro luciferase silencing effect in HeLa cells. R+/- 3.27 was found to be the optimum point for complexation. This finding was confirmed by gel retardation and siRNA accessibility assays. According to Cryo-TEM analysis, the lipoplexes had multi-lamellarity. In vitro transfection efficiency of lipoplexes in HeLa cells was tested at three different siRNA concentrations (10, 25, and 35 nM). Significant knockdown of luciferase by siRNA lipoplexes was observed based on reduced luciferase activity of transfected HeLa cells. Our findings were comparable with the silencing effect of siRNA complexed with Lipofectamine®. No cytotoxicity of lipoplexes was detected at the tested concentrations. This study was essential for further complexation studies which will be performed using microfluidic systems to formulate next-generation lipid-based controlled release systems.Graphical Abstract
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Category: Chemistry Source Type: research

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A Chinese scientist shocked the scientific community a couple of days ago with the announcement of having modified the very blueprint of life. If his claims are true, he tried to bestow two baby girls the ability to resist possible future infections with HIV. The outrage shows that humanity is not prepared to utilize the power of gene editing on embryos yet. We have no idea about the biological consequences, and we haven’t tackled the necessary legal and ethical issues. Genes to become toys of the “Gods”? Humanity has come a long way since Aldous Huxley pinned down how methods of genetic engineering, bio...
Source: The Medical Futurist - Category: Information Technology Authors: Tags: Bioethics Future of Medicine Genomics designer babies designer baby Gene gene editing genes Genome genome sequencing Health Healthcare healthcare system Innovation technology Source Type: blogs
This study intended to investigate the biological role of LOC285194 and its clinical significance in NSCLC. LOC285194 was detected by qRT-PCR, and its correlation with clinicopathological features of NSCLC was analyzed. The expression of LOC285194 was knocked down or ectopically expressed in lung cancer cells (A549 and H1299) and tumor cell growth, migration and invasion in vitro were investigated. In addition, the interaction of LOC285194 and target proteins was assessed by RNA pulldown and RNA immunoprecipitation in vitro. The results revealed that the expression of LOC285194 was significantly lower in tumor ti...
Source: Oncology Reports - Category: Cancer & Oncology Tags: Oncol Rep Source Type: research
Conclusion: We reported the synergistic anti-tumor efficacy of ZD55-IL-24 and DTX on prostate cancer. Our results suggest that chemotherapy combined with oncolytic adenovirus mediated gene therapy is a promising strategy for the treatment of advanced prostate cancer.
Source: Journal of Cancer - Category: Cancer & Oncology Authors: Tags: Research Paper Source Type: research
LncRNA SNHG14 promotes inflammatory response induced by cerebral ischemia/reperfusion injury through regulating miR-136-5p /ROCK1, Published online: 14 December 2018; doi:10.1038/s41417-018-0067-5LncRNA SNHG14 promotes inflammatory response induced by cerebral ischemia/reperfusion injury through regulating miR-136-5p /ROCK1
Source: Cancer Gene Therapy - Category: Cancer & Oncology Authors: Source Type: research
Down-regulated long non-coding RNA RNAZFHX4-AS1 suppresses invasion and migration of breast cancer cells via FAT4-dependent Hippo signaling pathway, Published online: 14 December 2018; doi:10.1038/s41417-018-0066-6Down-regulated long non-coding RNA RNAZFHX4-AS1 suppresses invasion and migration of breast cancer cells via FAT4-dependent Hippo signaling pathway
Source: Cancer Gene Therapy - Category: Cancer & Oncology Authors: Source Type: research
There are any number of reasons why promising lines of research get stuck. Simple abandonment is a surprisingly common one; people outside the scientific community have little appreciation of the degree to which the floor of the forest is littered with valuable raw materials, just waiting for someone to spend the effort to forge them into useful goods. Many researchers have little interest in implementation, or fail to convince funding sources to continue their initial exploration, or the people involved move on, or the tools are hard to use and no-one else wants to make the effort to replicate the discoveries. It is somet...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs
Abstract The invention of new techniques to manipulate materials at their nanoscale had an evolutionary effect on various medical sciences. At the time, there are thousands of nanomaterials which can be divided according to their shape, origin, or their application. The nanotechnology provided new solutions for old problems. In medical sciences, they are used for diagnostic or therapeutic purposes. They can also be applied in the preparation of nanovaccines and nanoadjuvants. Their use in the treatment of cancer and in gene therapy opened the door for a new era in medicine. Recently, various applications of nanote...
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Tags: Environ Sci Pollut Res Int Source Type: research
m Self-replicating single-stranded RNA viruses such as alphaviruses, flaviviruses, measles viruses, and rhabdoviruses provide efficient delivery and high-level expression of therapeutic genes due to their high capacity of RNA replication. This has contributed to novel approaches for therapeutic applications including vaccine development and gene therapy-based immunotherapy. Numerous studies in animal tumor models have demonstrated that self-replicating RNA viral vectors can generate antibody responses against infectious agents and tumor cells. Moreover, protection against challenges with pathogenic Ebola virus was obta...
Source: Molecules - Category: Chemistry Authors: Tags: Review Source Type: research
Instead of mind-boggling inventions, 2018 was the year when national governments, as well as healthcare regulators, started to embrace digital health technologies at scale. The year when Google, Amazon, Apple or Microsoft competed head-to-head for the biggest chunks on the healthcare market, and when the buzzword of the year award went to the blockchain. Here’s our guide to the top digital health stories from last year. 2018: Under the spell of cosmos and microcosmos Every year, The Medical Futurist team sits down and collects the top stories of the past 12 months in healthcare. We put the novelties under the microsc...
Source: The Medical Futurist - Category: Information Technology Authors: Tags: Business Future of Medicine Medical Professionals Patients Policy Makers Researchers Top Lists 2018 AI artificial intelligence artificial pancreas blockchain chatbot CRISPR deep learning diabetes digital health digital he Source Type: blogs
Conclusion: Our findings demonstrate that this novel nanoplatform for targeted image-guided treatment of tumor and tactfully integrated chemotherapy, photothermal therapy (PTT) and gene therapy might provide an insight for cancer theranostics.
Source: Theranostics - Category: Molecular Biology Authors: Tags: Research Paper Source Type: research
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