A nucleotide sequence common for genetic probes used for detection and investigation of Y. pestis strains MK, IS100, and HRSIII was identified on the basis of restriction, hybridization, and computer analysis. This region of chromosomal DNA is a part of low-molecular BX-probe (about 170 bp) we have developed. The results of genomic fingerprinting of Y. pestis strains by the BX-probe are promising as regards its future utilization for typing the strains isolated in various endemic areas.
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ACS Sens
January 2025
Research Institute for Light-induced Acceleration System (RILACS), Osaka Metropolitan University, 1-2 Gakuencho, Nakaku, Sakai, Osaka 599-8570, Japan.
The unique characteristics of biological structures depend on the behavior of DNA sequences confined in a microscale cell under environmental fluctuations and dissipation. Here, we report a prominent difference in fluorescence from dye-modified single-stranded DNA in a light-induced assembly of DNA-functionalized heterogeneous probe particles in a microwell of several microliters in volume. Strong optical forces from the Mie scattering of microparticles accelerated hybridization, and the photothermal effect from the localized surface plasmons in gold nanoparticles enhanced specificity to reduce the fluorescence intensity of dye-modified DNA to a few %, even in a one-base mismatched sequence, enabling us to clearly highlight the single nucleotide polymorphisms in DNA.
View Article and Find Full Text PDFBrain Dev
January 2025
Department of Pediatrics, Aichi Medical University School of Medicine, Nagakute, Japan.
Background: Most cases of spinal muscular atrophy (SMA) can be diagnosed by copy number analysis of survival motor neuron (SMN) 1. However, a small number of cases of SMA can only be diagnosed by sequencing analysis. We present a case of SMA diagnosed 7 years after the onset of symptoms.
View Article and Find Full Text PDFMol Biol Rep
January 2025
Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan, 342005, India.
Background: Differential DNA methylation in the promoter region of tumour suppressor genes leads to gene function silencing.
Materials And Methods: In this study, we aimed to evaluate the salivary promoter methylation of EDNRB, MGMT and TIMP3 genes in H&NC patients (n = 100), premalignant lesions patients (n = 25) and healthy controls (n = 50). Blood and saliva samples were collected from all three groups and 20 concomitant tumour tissues were collected from the H&NC patients.
Dalton Trans
January 2025
A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119334, Vavilova Str., 28, bld. 1, Moscow, Russia.
A low oxygen level in solid tumors is behind the modern concept of selective chemotherapy by hypoxia-activated prodrugs, such as heteroleptic complexes of transition metals (cobalt(III), iron(III) or platinum(IV)) with bi- or tetradentate ligands and an anticancer drug molecule as a co-ligand. A series of new cobalt(III) complexes [Co(LR)(esc)]ClO with esculetin (6,7-dihydroxycoumarin) and 2,2'-bipyridines (2,2'-bipy) functionalized by different substituents R were probed in the hypoxia-activated delivery of this model anticancer drug. Their combined study by cyclic voltammetry and NMR spectroscopy allowed identifying linear correlations of the electrochemical reduction potentials and the rate of the hypoxia-activated dissociation of [Co(LR)(esc)]ClO with the Hammett constants of the substituents in 2,2'-bipy ligands.
View Article and Find Full Text PDFInt J Neonatal Screen
January 2025
Cellular, Molecular and Genomics Biomedicine Group, La Fe Health Research Institute, 46026 Valencia, Spain.
Spinal muscular atrophy (SMA) is a degenerative neuromuscular condition resulting from a homozygous deletion of the survival motor neuron 1 () gene in 95% of patients. A timely diagnosis via newborn screening (NBS) and initiating treatment before the onset of symptoms are critical for improving health outcomes in affected individuals. We carried out a screening test by quantitative PCR (qPCR) to amplify the exon seven of using dried blood spot (DBS) samples.
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