Cytotoxic Screening and Enhanced Anticancer Activity of Essential Oils-Loaded Biocompatible Lipid Nanoparticles against Lung and Colon Cancer Cells.

Plant and herbal essential oils (EOs) offer a wide range of pharmacological actions that include anticancer effects. Here, we evaluated the cytotoxic activity of EO from (chemotype linalool), (chemotype dihydrocarvone, LaDEO), (L.) (CnEO), , × , × , L.

Enzymatic Active Release of Violacein Present in Nanostructured Lipid Carrier by Lipase Encapsulated in 3D-Bioprinted Chitosan-Hydroxypropyl Methylcellulose Matrix With Anticancer Activity.

Violacein (Viol) is a bacterial purple water-insoluble pigment synthesized by and other microorganisms that display many beneficial therapeutic properties including anticancer activity. Viol was produced, purified in our laboratory, and encapsulated in a nanostructured lipid carrier (NLC). The NLC is composed of the solid lipid myristyl myristate, an oily lipid mixture composed of capric and caprylic acids, and the surfactant poloxamer P188.

Prodigiosin: a promising biomolecule with many potential biomedical applications.

Pigments are among the most fascinating molecules found in nature and used by human civilizations since the prehistoric ages. Although most of the bio-dyes reported in the literature were discovered around the eighties, the necessity to explore novel compounds for new biological applications has made them resurface as potential alternatives. Prodigiosin (PG) is an alkaloid red bio-dye produced by diverse microorganisms and composed of a linear tripyrrole chemical structure.

Anti-cancer mechanisms of linalool and 1,8-cineole in non-small cell lung cancer A549 cells.

Linalool and 1,8-cineole are plant-derived isoprenoids with anticancer activities in lung cancer cells, nevertheless, the cellular and molecular mechanisms of action remain poorly understood. The purpose of this study was to determine the anticancer mechanisms of action of linalool and 1,8-cineole in lung adenocarcinoma A549 cells. Linalool (0-2.

Antimicrobial activities of bacterial cellulose - Silver montmorillonite nanocomposites for wound healing.

A nanocomposite based on bacterial cellulose (BC) containing montmorillonite (MMT) modified with silver (BC-MMT-Ag) was developed to be used as potential scaffold for wound healing. Montmorillonite was suspended in silver nitrate solution to incorporate silver in the matrix by ion exchange. The derivative silver clay suspension was used to modify bacterial cellulose membranes by ex situ technique.

Assessment of cytotoxicity of imidazole ionic liquids and inclusion in targeted drug carriers containing violacein.

Violacein (Viol) is a pigment produced by several Gram-negative bacteria with many bioactivities, such as anticancer, virucide, and antiparasitic. However, violacein is insoluble under physiological conditions preventing its potential therapeutic uses. Surface-active ionic liquids (SAILs) based on the cation 1-alkylimidazolium ([C Him]) with = 10 to 16 alkyl carbon side chain lengths and acetate, bromide, methanesulfonate (S) or trifluoroacetate (F) as counterions were synthesized and screened to dissolve Viol in micellar aqueous media and for toxicological studies on the human lung carcinoma A549 cell line.

Citrus reticulata peel oil as an antiatherogenic agent: Hypolipogenic effect in hepatic cells, lipid storage decrease in foam cells, and prevention of LDL oxidation.

Background And Aims: Hypercholesterolemia and oxidative stress are two of the most important risk factors for atherosclerosis. The aim of the present work was to evaluate mandarin (Citrus reticulata) peel oil (MPO) in cholesterol metabolism and lipid synthesis, and its antioxidant capacity.

Methods And Results: Incubation of hepatic HepG2 cells with MPO (15-60 μL/L) reduced cholesterogenesis and saponifiable lipid synthesis, demonstrated by [C]acetate radioactivity assays.

Induction of oxidative stress as a possible mechanism by which geraniol affects the proliferation of human A549 and HepG2 tumor cells.

Geraniol (GOH), like other plant-derived natural bioactive compounds, has been found to possess antiproliferative properties that are essential to cope with malignant tumors. However, the mechanisms of molecular action of GOH are not fully elucidated. The aim of this study was to evaluate the effect of GOH on some oxidative parameters in human tumor cell lines (HepG2 and A549).

1,8-Cineole promotes G0/G1 cell cycle arrest and oxidative stress-induced senescence in HepG2 cells and sensitizes cells to anti-senescence drugs.

Aims: 1,8-Cineole is a plant-derived monoterpene and a major constituent of Eucalyptus essential oil. Previously, we demonstrated that 1,8-cineole inhibited hepatocellular carcinoma (HCC) HepG2 cell growth. However, the underlying mechanisms remain unknown.

Simple colorimetric method to determine the in vitro antioxidant activity of different monoterpenes.

The development of simple, fast and reproducible techniques that provide information about the antioxidant activity (AA) of different compounds is essential to screen and discover new molecules with potential applications in the therapeutic, cosmetic, toxicological and food fields. Here, a novel and simple colorimetric method ("BCB assay") is proposed for measuring the AA of chemical compounds by protection of the reporter dye Brilliant Cresyl Blue (BCB) from loss of color due to oxidation by hypochlorite (a physiological oxidant). The decay in BCB blue color (λ = 634 nm) in the presence of hypochlorite occurred in only 5 min and was used to track the AA of different molecules.

Citrus reticulata peel oil inhibits non-small cell lung cancer cell proliferation in culture and implanted in nude mice.

Non-small cell lung cancer (NSCLC) accounts for most cases of lung cancer. The peel oil of mandarin Citrus reticulata Blanco cv. Dancy (MPO) is a natural source of essential oils and carotenoids.

Linalool induces cell cycle arrest and apoptosis in HepG2 cells through oxidative stress generation and modulation of Ras/MAPK and Akt/mTOR pathways.

Aims: Linalool is a plant-derived monoterpene with anticancer activity, however its mechanisms of action remain poorly understood. The aim of this work was to elucidate the anticancer mechanisms of action of linalool in hepatocellular carcinoma (HCC) HepG2 cells.

Main Methods: Cell viability and proliferation were determined by WST-1 assay and BrdU incorporation, respectively.

Development and tailoring of hybrid lipid nanocarriers.

Background: Lipid nanoparticles are considered one of the most promising systems for controlled release of therapeutic molecules highly hydrophobic and with low biodisponibility. Solid lipid nanoparticles and nanostructured lipids carriers are widely seen as the workhorses of drug delivery systems because of low toxicity, enhanced encapsulation capacity, controlled drug kinetic release, easy tailoring and targeting and practicable scale up.

Conclusions: A new generation of hybrid lipid nanoparticles has emerged by combining the lipidic properties with polymers, proteins and metallic structures.

Design, characterization and in vitro evaluation of linalool-loaded solid lipid nanoparticles as potent tool in cancer therapy.

Linalool (LN) is a monoterpene found in essential oils of plants and herbs that produces multiple effects on the mevalonate pathway and interesting antiproliferative activity in cancer cells. However, due to its poor aqueous solubility, an efficient vehicle is needed to improve its administration and bioavailability in physiological media. LN encapsulation in solid lipid nanoparticles (SLN) with different compositions was explored and in vitro tested in two cancer cell lines.

Inhibition of Mevalonate Pathway and Synthesis of the Storage Lipids in Human Liver-Derived and Non-liver Cell Lines by Lippia alba Essential Oils.

The essential oils (EOs) of Lippia alba, an herb extensively used as a folk medicine in Latin America, are today promoted as an effective means of eliminating problems caused by hyperlipemia. We hypothesized that L.alba EOs inhibited cholesterol and triacylglycerols synthesis and decreased the intracellular depots of those lipids (lipid droplets), mechanisms involving the induction of a hypolipidemic response.

Modulation by geraniol of gene expression involved in lipid metabolism leading to a reduction of serum-cholesterol and triglyceride levels.

Background: Geraniol (G) is a natural isoprenoid present in the essential oils of several aromatic plants, with various biochemical and pharmacologic properties. Nevertheless, the mechanisms of action of G on cellular metabolism are largely unknown.

Hypothesis/purpose: We propose that G could be a potential agent for the treatment of hyperlipidemia that could contribute to the prevention of cardiovascular disease.

Suppression by geraniol of the growth of A549 human lung adenocarcinoma cells and inhibition of the mevalonate pathway in culture and in vivo: potential use in cancer chemotherapy.

Geraniol (G)-a natural compound present in the essential oils of many aromatic plants-has attracted interest for its potential antitumor effects. The molecular mechanisms of the growth inhibition and apoptosis induced by G in cancer cells, however, remain unclear. In this study, we investigated the effects of G on cell proliferation in culture in A549 cells and in vivo in those same tumor cells implanted in nude mice fed diets supplemented with 25, 50, and 75 mmol G/kg.

Synergistic antiproliferative and anticholesterogenic effects of linalool, 1,8-cineole, and simvastatin on human cell lines.

Monoterpenes are naturally occurring plant hydrocarbons with multiple effects on the mevalonate pathway (MP), while statins competitively inhibit hydroxymethylglutarylcoenzyme-A reductase (HMGCR), the rate-limiting enzyme in the MP. Monoterpenes and statins proved capable of inhibiting both proliferation and cholesterogenesis. In the present study we assess the in vitro antiproliferative and anticholesterogenic effects of two monoterpenes: linalool and 1,8-cineole-either alone, in combination with each other, or combined individually with simvastatin-on liver-derived (HepG2) and extrahepatic (A549) cell lines.