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Articles 1 - 7 of 7
Full-Text Articles in Nucleic Acids, Nucleotides, and Nucleosides
Rna Isolation In Duchenne Muscular Dystrophy (Dmd) Mice Models, Salem Abu Al-Burak
Rna Isolation In Duchenne Muscular Dystrophy (Dmd) Mice Models, Salem Abu Al-Burak
Undergraduate Student Research Internships Conference
Fibrosis is a progressive and typically irreversible disease process characterized by the excessive deposition of collagen in organs and in tissues of the musculoskeletal (MSK) system1,2. This process, which causes loss of organ and tissue function, can be initiated by micro-traumas3, an excessive and/or prolonged immune response1, the activation and proliferation of fibrosis-inducing progenitor cells4, and a pro-fibrotic extra-cellular microenvironment5. In parallel with the events that initiate fibrosis, genetic or environmental influences may cause cells and tissues to become predisposed to fibrosis development prior to initiation. This suggests that these …
The Role Of Coagulase-Negative Staphylococcal Secreted Products On Staphylococcus Aureus And Staphylococcus Lugdunensis Infections, Denny Chin
Electronic Thesis and Dissertation Repository
The Staphylococcus genus is comprised of over 40 bacterial species. The most well-studied species in this genus is the notorious human pathogen Staphylococcus aureus, a bacterium that produces coagulase among many other virulence factors. Since S. aureus is a major health burden and causes a plethora of diseases in humans, it has received significant attention and much research has been done to understand its biology to treat diseases caused by this pathogen. However, the coagulase-negative staphylococci (CoNS) make up most of the staphylococcal species and have received less attention since they are thought to have a lesser impact on …
A Chimeric Nucleobase - Phenylazo Derivative As An Intrinsic Nucleobase Quencher, Gyeongsu Park, Timothy Martin-Chan, Amer El Samm, Robert H.E. Hudson
A Chimeric Nucleobase - Phenylazo Derivative As An Intrinsic Nucleobase Quencher, Gyeongsu Park, Timothy Martin-Chan, Amer El Samm, Robert H.E. Hudson
Western Research Forum
Molecular beacons are important bioanalytical probes which are most often
constructed from a single-stranded oligonucleotide which has been labeled at
opposite termini with a fluorophore and a quencher. When the fluorophore and
quencher are in close proximity, no fluorescence is observed due to FRET
(Fluorescence Resonance Energy Transfer). DABCYL (4-dimethylaminoazobenzene-
4'-carboxylic acid) has been used as a quencher in the molecular beacon to absorbs
excitation energy from a fluorophore and to dissipate the energy as heat. However,
DABCYL is unable to form a base-pair and is conventionally placed as an overhanging
residue. This produces a derivative wherein the chromophore has …
Synthesis And Photophysical Studies Of Pyrrolocytosine Derivatives, Atefeh Rouhi
Synthesis And Photophysical Studies Of Pyrrolocytosine Derivatives, Atefeh Rouhi
Electronic Thesis and Dissertation Repository
Pyrrolocytosine (pC) derivatives are used in the study of nucleic acid structure, function and in the design of the hybridization probes. They have unique properties including small size and Watson-Crick base pairing capability and impressive fluorescent properties. However, they exhibit variation in the fluorescence properties upon incorporation into single-stranded DNA and double-stranded DNA.
This study analyzes the effect of the nearest neighbours on the fluorescence properties of phenylpyrrolocytosine (PhpC) and provides a guide to the proper design of the PhpC containing fluorescent probes. Moreover, the possibility of photoinduced electron transfer (PET) as the underlying mechanism of the unusual photophysical behavior …
Functionalization Of Peptide Nucleic Acids Via Post-Synthetic Click Chemistry, Xiaoxiao Wang
Functionalization Of Peptide Nucleic Acids Via Post-Synthetic Click Chemistry, Xiaoxiao Wang
Electronic Thesis and Dissertation Repository
Peptide Nucleic Acid (PNA) has shown great potential in molecular diagnostics, antisense/antigene therapy and nanotechnology. Like other synthetic nucleic acids and artificial analogues, PNA has been extensively modified to achieve better performance in these applications. To efficiently develop PNA probes for molecular diagnosis, this thesis is focused on versatile functionalization of PNA via post-synthetic click chemistry.
Chapter 2 presents the synthesis of quencher-free PNA molecular beacons (MBs) targeting a cystic fibrosis transmembrane conductance regulator (CFTR) sequence mutation. To avoid the tedious synthesis of functionalized PNA monomers for probe development, a simple approach to modify PNA oligomers by post-synthetic on-resin click …
Design And Syntheses Of Novel Quenchers For Fluorescent Hybridization Probes, Mohamed Moustafa
Design And Syntheses Of Novel Quenchers For Fluorescent Hybridization Probes, Mohamed Moustafa
Electronic Thesis and Dissertation Repository
Since most of human diseases are related to genetic mutations, during the past two decades, identification of such mutations has attracted much attention. Detection of these mutations is mainly based hybridization with the complementary reporter probes.
Nucleic acids detection takes place by changing either the reporter’s fluorescence intensity or the colour of its fluorescence. The use of fluorescent probes for nucleic acid detection has attracted much attention due to its efficiency, the ease of synthesis and availability of commercial reporters that facilitates the probe synthesis. Nowadays, most of nucleic acid detection using fluorescent probes relies on quenching of fluorescence by …
Design And Syntheses Of Fluorescent Cytosine Analogues, David W. Dodd
Design And Syntheses Of Fluorescent Cytosine Analogues, David W. Dodd
Electronic Thesis and Dissertation Repository
The avid hybridization of peptide nucleic acid (PNA) to DNA and RNA along with the molecule’s biological stability has led it to be used in both antisense and antigene capacities. PNA acts against translation via a steric blockade mechanism. It is therefore reasonable to assume that increased heteroduplex stability could lead to increased potency. Two ways of doing this were explored. I) N-Terminal attachment of a platinous chloride chelating moiety to PNA complementary to Xenopus noggin was synthesized with the objective of selective, covalent platination of the target transcript in vivo. Phenotypes consistent with knockdown of the selected …