Because peptide nucleic acids (PNAs) are poorly taken up by mammalian cells, strategies need to be developed for their intracellular delivery. In the present study, we demonstrated the possibility to efficiently release a naked PNA targeting the catalytic component of human telomerase reverse transcriptase (hTERT-PNA) into the cytoplasm of DU145 prostate cancer cells through the photochemical i...

PNA probes for the specific detection of DNA from olive oil samples by microarray technology were developed. The presence of as low as 5% refined hazelnut (Corylus avellana) oil in extra-virgin olive oil (Olea europaea L.) could be detected by using a PNA microarray. A set of two single nucleotide polymorphisms (SNPs) from the Actin gene of Olive was chosen as a model for evaluating the ability...

An immobilized amino acid napbthylamide substrate for proteinases with tryptic-like specificity was prepared by reacting L-arginine P-naphthylamide with an N-hydroxysuccinimide-activated derivative of agarose. Hydrolysis of the immobilized substrate (AlO-Arg-PNA) was followed by monitoring the increase in fluorescence accompanying the release of /3-naphthylamine. Assays using AIO-Arg-PNA were d...

We describe the first Gquadruplex targeting approach that combines an intercalation and a hybridization strategy by investigating the interaction of a G-rich PNA acridone conjugate 1 with a three repeat fragment of the human telomere G3 to form a hybrid PNA-DNA quadruplex mimicking the biologically relevant (3+1) pure DNA dimeric telomeric quadruplex. Using a combination of UV, CD and fluoresce...

Peptide Nucleic Acids (PNAs) are single-stranded synthetic nucleic acids with a pseudopeptide backbone in lieu of the phosphodiester linked sugar and phosphate found in traditional oligos. PNA designed complementary to the bacterial Shine-Dalgarno or start codon regions of mRNA disrupts translation resulting in the transient reduction in protein expression. This study examines the use of PNA te...

Background: Neonates with Perinatal Asphyxia (PNA) are at higher risk for developing Acute Kidney Injury (AKI). Conventionally, Serum Creatinine (SCr) is used to diagnose AKI but lacks specificity during the first few days of life. Neutrophil Gelatinase-Associated Lipocalin (NGAL) has emerged as a novel biomarker in such situations, while its value our setting yet be validated. The study aimed ...

Experiments were conducted on adult rainbow trout (Oncorhynchus mykiss) to test the hypothesis that SLC9 Na+/H+ exchangers (SLC9A2, NHE2; and SLC9A3, NHE3) on the gill epithelium are localized specifically to a subset of mitochondria-rich cells (MRCs) that are unable to bind peanut lectin agglutinin (PNA). This cell type, termed the PNA- MRC, is a sub-type of MRC believed to function in Na+ upt...

Land and sea surface temperatures, precipitation, and storm tracks in North America and the North Pacific are controlled to a large degree by atmospheric variability associated with the Pacific North American (PNA) pattern. The modern instrumental record indicates a trend toward a positive PNA phase in recent decades, which has led to accelerated warming and snowpack decline in northwestern Nor...

A new rhenium tricarbonyl complex of a bis(quinoline)-derived ligand (2-azido-N,N-bis((quinolin-2-yl)methyl)ethanamine, L-N(3)), namely [Re(CO)(3)(L-N(3))]Br was synthesized and characterized in-depth, including by X-ray crystallography. [Re(CO)(3)(L-N(3))]Br exhibits a strong UV absorbance in the range 300-400 nm with a maximum at 322 nm, and upon photoexcitation, shows two distinct emission b...

1 Detection of antiviral-resistant hepatitis B virus (HBV) mutations is important for monitoring 2 the response to treatment and for effective treatment decision. We have developed an array 3 using Peptide Nucleic Acid (PNA) probes to detect point mutations in HBV associated with 4 antiviral resistance. PNA probes were designed to detect mutations associated with resistance 5 to lamivudine, ade...