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  1. Article ; Online: CSC01 shows promise as a potential inhibitor of the oncogenic G13D mutant of KRAS: an in silico approach.

    Durojaye, Olanrewaju Ayodeji / Ejaz, Umer / Uzoeto, Henrietta Onyinye / Fadahunsi, Adeola Abraham / Opabunmi, Adebayo Oluwole / Ekpo, Daniel Emmanuel / Sedzro, Divine Mensah / Idris, Mukhtar Oluwaseun

    Amino acids

    2023  Volume 55, Issue 12, Page(s) 1745–1764

    Abstract: About 30% of malignant tumors include KRAS mutations, which are frequently required for the development and maintenance of malignancies. KRAS is now a top-priority cancer target as a result. After years of research, it is now understood that the ... ...

    Abstract About 30% of malignant tumors include KRAS mutations, which are frequently required for the development and maintenance of malignancies. KRAS is now a top-priority cancer target as a result. After years of research, it is now understood that the oncogenic KRAS-G12C can be targeted. However, many other forms, such as the G13D mutant, are yet to be addressed. Here, we used a receptor-based pharmacophore modeling technique to generate potential inhibitors of the KRAS-G13D oncogenic mutant. Using a comprehensive virtual screening workflow model, top hits were selected, out of which CSC01 was identified as a promising inhibitor of the oncogenic KRAS mutant (G13D). The stability of CSC01 upon binding the switch II pocket was evaluated through an exhaustive molecular dynamics simulation study. The several post-simulation analyses conducted suggest that CSC01 formed a stable complex with KRAS-G13D. CSC01, through a dynamic protein-ligand interaction profiling analysis, was also shown to maintain strong interactions with the mutated aspartic acid residue throughout the simulation. Although binding free energy analysis through the umbrella sampling approach suggested that the affinity of CSC01 with the switch II pocket of KRAS-G13D is moderate, our DFT analysis showed that the stable interaction of the compound might be facilitated by the existence of favorable molecular electrostatic potentials. Furthermore, based on ADMET predictions, CSC01 demonstrated a satisfactory drug likeness and toxicity profile, making it an exemplary candidate for consideration as a potential KRAS-G13D inhibitor.
    MeSH term(s) Humans ; Proto-Oncogene Proteins p21(ras)/genetics ; Colorectal Neoplasms/pathology ; Mutation ; Molecular Dynamics Simulation
    Chemical Substances Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2) ; KRAS protein, human
    Language English
    Publishing date 2023-07-27
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 1121341-3
    ISSN 1438-2199 ; 0939-4451
    ISSN (online) 1438-2199
    ISSN 0939-4451
    DOI 10.1007/s00726-023-03304-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Immunity evasion: consequence of the N501Y mutation of the SARS-CoV-2 spike glycoprotein.

    Uzoeto, Henrietta Onyinye / Ajima, Judith Nnedimkpa / Arazu, Amarachukwu Vivian / Ibiang, Glory Omini / Cosmas, Samuel / Durojaye, Olanrewaju Ayodeji

    Journal, genetic engineering & biotechnology

    2022  Volume 20, Issue 1, Page(s) 10

    Language English
    Publishing date 2022-01-14
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2637420-1
    ISSN 2090-5920 ; 1687-157X ; 2090-5920
    ISSN (online) 2090-5920
    ISSN 1687-157X ; 2090-5920
    DOI 10.1186/s43141-021-00287-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Potential therapeutic target identification in the novel 2019 coronavirus: insight from homology modeling and blind docking study.

    Durojaye, Olanrewaju Ayodeji / Mushiana, Talifhani / Uzoeto, Henrietta Onyinye / Cosmas, Samuel / Udowo, Victor Malachy / Osotuyi, Abayomi Gaius / Ibiang, Glory Omini / Gonlepa, Miapeh Kous

    The Egyptian journal of medical human genetics

    2020  Volume 21, Issue 1, Page(s) 44

    Abstract: Background: The 2019-nCoV which is regarded as a novel coronavirus is a positive-sense single-stranded RNA virus. It is infectious to humans and is the cause of the ongoing coronavirus outbreak which has elicited an emergency in public health and a call ...

    Abstract Background: The 2019-nCoV which is regarded as a novel coronavirus is a positive-sense single-stranded RNA virus. It is infectious to humans and is the cause of the ongoing coronavirus outbreak which has elicited an emergency in public health and a call for immediate international concern has been linked to it. The coronavirus main proteinase which is also known as the 3C-like protease (3CLpro) is a very important protein in all coronaviruses for the role it plays in the replication of the virus and the proteolytic processing of the viral polyproteins. The resultant cytotoxic effect which is a product of consistent viral replication and proteolytic processing of polyproteins can be greatly reduced through the inhibition of the viral main proteinase activities. This makes the 3C-like protease of the coronavirus a potential and promising target for therapeutic agents against the viral infection.
    Results: This study describes the detailed computational process by which the 2019-nCoV main proteinase coding sequence was mapped out from the viral full genome, translated and the resultant amino acid sequence used in modeling the protein 3D structure. Comparative physiochemical studies were carried out on the resultant target protein and its template while selected HIV protease inhibitors were docked against the protein binding sites which contained no co-crystallized ligand.
    Conclusion: In line with results from this study which has shown great consistency with other scientific findings on coronaviruses, we recommend the administration of the selected HIV protease inhibitors as first-line therapeutic agents for the treatment of the current coronavirus epidemic.
    Language English
    Publishing date 2020-10-02
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2515357-2
    ISSN 2090-2441 ; 2090-2441
    ISSN (online) 2090-2441
    ISSN 2090-2441
    DOI 10.1186/s43042-020-00081-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: An in silico LLPS perturbation approach in the design of a novel SARS-CoV-2 spike receptor-binding domain inhibitor.

    Durojaye, Olanrewaju Ayodeji / Sedzro, Divine Mensah / Mushiana, Talifhani / Uzoeto, Henrietta Onyinye / Cosmas, Samuel / Ajima, Judith Nnedimkpa / Ibiang, Glory Omini

    The Egyptian journal of medical human genetics

    2020  Volume 21, Issue 1, Page(s) 65

    Abstract: The reversible process where a homogenous fluid de-mixes into two distinctively separate liquid phases is referred to as LLPS (Liquid-liquid phase separation). The resulting liquid is made up of one dilute phase and one condensed phase. An increasing ... ...

    Abstract The reversible process where a homogenous fluid de-mixes into two distinctively separate liquid phases is referred to as LLPS (Liquid-liquid phase separation). The resulting liquid is made up of one dilute phase and one condensed phase. An increasing number of studies have shown that the liquid-liquid phase separation is an important principle that underlies intracellular organization in biological systems, forming liquid condensates without a membrane envelope, otherwise known as MLOs (membraneless organelles). Such organelles include the P bodies, nucleolus and stress granules. Moreover, the regulation of many other biological processes such as signal transduction, chromatin rearrangement and RNA metabolism have been linked to the liquid-liquid phase separation.
    Language English
    Publishing date 2020-11-25
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2515357-2
    ISSN 2090-2441 ; 2090-2441
    ISSN (online) 2090-2441
    ISSN 2090-2441
    DOI 10.1186/s43042-020-00105-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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