Publications by authors named "Denis V Kuzmin"

Microalgae are considered to be a promising group of organisms for fuel production, waste processing, pharmaceutical applications, and as a source of food components. Unicellular algae are worth being considered because of their capacity to produce comparatively large amounts of lipids, proteins, and vitamins while requiring little room for growth. They can also grow on waste and fix CO2 and nitrogen compounds.

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  • DNA repair mechanisms are crucial for maintaining genome integrity and limiting tumor progression, but they can also help tumors survive radiation and chemotherapy treatments.
  • Research analyzed 38 DNA repair pathways across nine cancer types using RNAseq data from various databases, revealing a consistent downregulation of the G2/M checkpoint pathway and low p53 pathway activity in tumors.
  • The study identified that despite most DNA repair pathways being upregulated, key genes associated with the G2/M checkpoint and p53 pathways were significantly disrupted, highlighting their unique roles in cancer development.
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Drugs targeting receptor tyrosine kinase (RTK) oncogenic fusion proteins demonstrate impressive anti-cancer activities. The fusion presence in the cancer is the respective drug prescription biomarker, but their identification is challenging as both the breakpoint and the exact fusion partners are unknown. RNAseq offers the advantage of finding both fusion parts by screening sequencing reads.

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In gliomas, expression of certain marker genes is strongly associated with survival and tumor type and often exceeds histological assessments. Using a human interactome model, we algorithmically reconstructed 7494 new-type molecular pathways that are centered each on an individual protein. Each single-gene expression and gene-centric pathway activation was tested as a survival and tumor grade biomarker in gliomas and their diagnostic subgroups (IDH mutant or wild type, IDH mutant with 1p/19q co-deletion, MGMT promoter methylated or unmethylated), including the three major molecular subtypes of glioblastoma (proneural, mesenchymal, classical).

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  • - OncoboxPD is an extensive database of human molecular pathways, featuring over 51,000 pathways that map out protein-protein interactions and metabolic reactions, totaling over 361,000 interactions among 64,000 molecules.
  • - It categorizes pathways by biological processes and uses algorithms to annotate pathway nodes, allowing users to determine pathway activation levels based on specific RNA/protein expression profiles.
  • - Users can visualize pathways as static or dynamic graphs, highlight differentially expressed nodes, and generate summary graphs that display the most significant upregulated and downregulated pathways for their comparisons.
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  • Despite years of research, there are no reliable early diagnosis or treatment monitoring biomarkers for glioblastoma patients.
  • The study aimed to discover significant molecular differences between short- and long-term survivors using RNA sequencing, revealing a specific long noncoding RNA associated with poor survival and identifying key genes linked to critical biological processes, which could lead to better-targeted therapies.
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Carcinogenesis is linked with massive changes in regulation of gene networks. We used high throughput mutation and gene expression data to interrogate involvement of 278 signaling, 72 metabolic, 48 DNA repair and 47 cytoskeleton molecular pathways in cancer. Totally, we analyzed 4910 primary tumor samples with individual cancer RNA sequencing and whole exome sequencing profiles including ~1.

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Despite the significant achievements in chemotherapy, cancer remains one of the leading causes of death. Target therapy revolutionized this field, but efficiencies of target drugs show dramatic variation among individual patients. Personalization of target therapies remains, therefore, a challenge in oncology.

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Cytotoxic effect of the antimicrobial peptide ChMAP-28 from leucocytes of the goat was examined against five cancer and two normal human cell lines. ChMAP-28 has the amino acid sequence GRFKRFRKKLKRLWHKVGPFVGPILHY and is homologous to other α-helical mammalian antimicrobial peptides. ChMAP-28 shows considerably higher cytotoxicity against cultured tumor cells than toward normal cells at concentrations of <10 μM.

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Biological activity of the new antimicrobial peptide polyphemusin III from the horseshoe crab was examined against bacterial strains and human cancer, transformed, and normal cell cultures. Polyphemusin III has the amino acid sequence RRGCFRVCYRGFCFQRCR and is homologous to other β-hairpin peptides from the horseshoe crab. Antimicrobial activity of the peptide was evaluated and MIC (minimal inhibitory concentration) values were determined.

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Natural antimicrobial peptides (AMPs) are important components of the innate immune system with a wide spectrum of biological activity. In this study, we investigated the cytotoxic effect of three recombinant β-hairpin cationic AMPs: arenicin-1 from the polychaeta Arenicola marina, tachyplesin I from the horseshoe crab Tachypleus tridentatus, and gomesin from the spider Acanthoscurria gomesiana. All the three β-hairpin AMPs were overexpressed in Escherichia coli.

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MicroRNAs (miRs) are short noncoding RNA molecules that regulate expression of target mRNAs. Many published sources provide information about miRs and their targets. However, bioinformatic tools elucidating higher level impact of the established total miR profiles, are still largely missing.

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