LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 31

Search options

  1. Article ; Online: Discovery of ZN-c3, a Highly Potent and Selective Wee1 Inhibitor Undergoing Evaluation in Clinical Trials for the Treatment of Cancer.

    Huang, Peter Q / Boren, Brant C / Hegde, Sayee G / Liu, Hui / Unni, Aditya K / Abraham, Sunny / Hopkins, Chad D / Paliwal, Sunil / Samatar, Ahmed A / Li, Jiali / Bunker, Kevin D

    Journal of medicinal chemistry

    2021  Volume 64, Issue 17, Page(s) 13004–13024

    Abstract: Wee1 inhibition has received great attention in the past decade as a promising therapy for cancer treatment. Therefore, a potent and selective Wee1 inhibitor is highly desirable. Our efforts to make safer and more efficacious Wee1 inhibitors led to the ... ...

    Abstract Wee1 inhibition has received great attention in the past decade as a promising therapy for cancer treatment. Therefore, a potent and selective Wee1 inhibitor is highly desirable. Our efforts to make safer and more efficacious Wee1 inhibitors led to the discovery of compound
    MeSH term(s) Animals ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/pharmacology ; Area Under Curve ; Cell Cycle Proteins/antagonists & inhibitors ; Cell Cycle Proteins/genetics ; Cell Cycle Proteins/metabolism ; Cell Line, Tumor ; Dogs ; Drug Design ; Drug Discovery ; Gene Expression Regulation, Neoplastic/drug effects ; Half-Life ; Humans ; Male ; Mice ; Mice, Nude ; Models, Molecular ; Molecular Structure ; Protein Conformation ; Protein-Tyrosine Kinases/antagonists & inhibitors ; Protein-Tyrosine Kinases/genetics ; Protein-Tyrosine Kinases/metabolism ; Rats ; Rats, Sprague-Dawley ; Xenograft Model Antitumor Assays
    Chemical Substances Antineoplastic Agents ; Cell Cycle Proteins ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; WEE1 protein, human (EC 2.7.10.2)
    Language English
    Publishing date 2021-08-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.1c01121
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Spfy: an integrated graph database for real-time prediction of bacterial phenotypes and downstream comparative analyses.

    Le, Kevin K / Whiteside, Matthew D / Hopkins, James E / Gannon, Victor P J / Laing, Chad R

    Database : the journal of biological databases and curation

    2018  Volume 2018, Page(s) 1–10

    Abstract: Public health laboratories are currently moving to whole-genome sequence (WGS)-based analyses, and require the rapid prediction of standard reference laboratory methods based solely on genomic data. Currently, these predictive genomics tasks rely on ... ...

    Abstract Public health laboratories are currently moving to whole-genome sequence (WGS)-based analyses, and require the rapid prediction of standard reference laboratory methods based solely on genomic data. Currently, these predictive genomics tasks rely on workflows that chain together multiple programs for the requisite analyses. While useful, these systems do not store the analyses in a genome-centric way, meaning the same analyses are often re-computed for the same genomes. To solve this problem, we created Spfy, a platform that rapidly performs the common reference laboratory tests, uses a graph database to store and retrieve the results from the computational workflows and links data to individual genomes using standardized ontologies. The Spfy platform facilitates rapid phenotype identification, as well as the efficient storage and downstream comparative analysis of tens of thousands of genome sequences. Though generally applicable to bacterial genome sequences, Spfy currently contains 10 243 Escherichia coli genomes, for which in-silico serotype and Shiga-toxin subtype, as well as the presence of known virulence factors and antimicrobial resistance determinants have been computed. Additionally, the presence/absence of the entire E. coli pan-genome was computed and linked to each genome. Owing to its database of diverse pre-computed results, and the ability to easily incorporate user data, Spfy facilitates hypothesis testing in fields ranging from population genomics to epidemiology, while mitigating the re-computation of analyses. The graph approach of Spfy is flexible, and can accommodate new analysis software modules as they are developed, easily linking new results to those already stored. Spfy provides a database and analyses approach for E. coli that is able to match the rapid accumulation of WGS data in public databases.
    MeSH term(s) Computational Biology ; Databases as Topic ; Escherichia coli/genetics ; Escherichia coli/pathogenicity ; Escherichia coli/physiology ; Genome, Bacterial ; Internet ; Phenotype ; Software ; Virulence Factors/genetics
    Chemical Substances Virulence Factors
    Language English
    Publishing date 2018-01-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2496706-3
    ISSN 1758-0463 ; 1758-0463
    ISSN (online) 1758-0463
    ISSN 1758-0463
    DOI 10.1093/database/bay086
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Evaluation of KP-1199: a novel acetaminophen analog for hemostatic function and antinociceptive effects.

    Reddoch-Cardenas, Kristin M / Cheppudira, Bopaiah P / Garza, Thomas / Hopkins, Chad D / Bunker, Kevin D / Slee, Deborah H / Cap, Andrew P / Bynum, James A / Christy, Robert J

    Transfusion

    2021  Volume 61 Suppl 1, Page(s) S234–S242

    Abstract: Background: Acetaminophen (APAP) is a widely self-prescribed analgesic for mild to moderate pain, but overdose or repeat doses can lead to liver injury and death. Kalyra Pharmaceuticals has developed a novel APAP analog, KP-1199, currently in Phase 1 ... ...

    Abstract Background: Acetaminophen (APAP) is a widely self-prescribed analgesic for mild to moderate pain, but overdose or repeat doses can lead to liver injury and death. Kalyra Pharmaceuticals has developed a novel APAP analog, KP-1199, currently in Phase 1 clinical studies, which lacks hepatotoxicity. In this study, the authors evaluated the antinociceptive effect of KP-1199 on thermal injury-induced nociceptive behaviors as well as hemostatic parameters using human blood samples.
    Methods: Full-thickness thermal injury was induced in anesthetized adult male Sprague-Dawley rats. On day 7 post-injury, KP-1199 (30 and 60 mg/kg) or APAP (60 mg/kg) was administered orally. Antinociception of KP-1199 and APAP were assessed at multiple time points using Hargreaves' test. In separate experiments, human whole blood was collected and treated with either KP-1199, APAP, or Vehicle (citrate buffer) at 1× (214 μg/ml) and 10× (2140 μg/ml) concentrations. The treated blood samples were assessed for: clotting function, thrombin generation, and platelet activation.
    Results: APAP did not produce antinociceptive activity. KP-1199 treatment significantly increased the nociceptive threshold, and the antinociceptive activity persisted up to 3 h post-treatment. In human samples, 10× APAP caused significantly prolonged clotting times and increased platelet activation, whereas KP-1199 had caused no negative effects on either parameter tested.
    Conclusion: These results suggest that KP-1199 possesses antinociceptive activity in a rat model of thermal injury. Since KP-1199 does not induce platelet activation or inhibit coagulation, it presents an attractive alternative to APAP for analgesia, especially for battlefield or surgical scenarios where blood loss and blood clotting are of concern.
    MeSH term(s) Acetaminophen/administration & dosage ; Acetaminophen/analogs & derivatives ; Acetaminophen/pharmacology ; Acetaminophen/therapeutic use ; Administration, Oral ; Analgesics/administration & dosage ; Analgesics/chemistry ; Analgesics/pharmacology ; Analgesics/therapeutic use ; Animals ; Hemostasis/drug effects ; Humans ; Hyperalgesia/blood ; Hyperalgesia/drug therapy ; Male ; Rats, Sprague-Dawley ; Rats
    Chemical Substances Analgesics ; Acetaminophen (362O9ITL9D)
    Language English
    Publishing date 2021-08-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.16497
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Isolation, biology and chemistry of the disorazoles: new anti-cancer macrodiolides.

    Hopkins, Chad D / Wipf, Peter

    Natural product reports

    2009  Volume 26, Issue 5, Page(s) 585–601

    Abstract: Covering: 1994 to 2008. The disorazoles comprise a family of 29 closely related macrocyclic polyketides isolated in 1994 from the fermentation broth of the gliding myxobacterium Sorangium cellulosum. Disorazoles A1, E and C1 have shown exceptional ... ...

    Abstract Covering: 1994 to 2008. The disorazoles comprise a family of 29 closely related macrocyclic polyketides isolated in 1994 from the fermentation broth of the gliding myxobacterium Sorangium cellulosum. Disorazoles A1, E and C1 have shown exceptional biological activites toward inhibiting the proliferation of human cancer cell lines in picomolar and nanomolar concentrations through the disruption of microtubule polymerization. This review gives a brief introduction describing the biosynthesis and the significance of the disorazoles as a new class of microtubulin disruptors. Another portion of the review focuses on the biology of the disorazoles, specifically disorazole A1 and C1, and their antiproliferative efficacy against animal and human tumor cell lines, as well as the available SAR data. The majority of the discussion addresses synthetic efforts, including partial syntheses of various disorazoles and a summary of the total synthesis of disorazole C1.
    MeSH term(s) Antineoplastic Agents/chemical synthesis ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/isolation & purification ; Antineoplastic Agents/pharmacology ; Drug Screening Assays, Antitumor ; Humans ; Macrolides/chemical synthesis ; Macrolides/chemistry ; Macrolides/isolation & purification ; Macrolides/pharmacology ; Molecular Structure ; Myxococcales/chemistry ; Oxazoles/chemical synthesis ; Oxazoles/chemistry ; Oxazoles/isolation & purification ; Oxazoles/pharmacology ; Structure-Activity Relationship
    Chemical Substances Antineoplastic Agents ; Macrolides ; Oxazoles ; disorazole A1 ; disorazole C1 ; disorazole E1
    Language English
    Publishing date 2009-03-11
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 2002546-4
    ISSN 1460-4752 ; 0265-0568
    ISSN (online) 1460-4752
    ISSN 0265-0568
    DOI 10.1039/b813799b
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Isolation, biology and chemistry of the disorazoles: new anti-cancer macrodiolides

    Hopkins, Chad D. / Wipf, Peter

    Natural product reports. 2009 Apr. 23, v. 26, no. 5

    2009  

    Abstract: The disorazoles comprise a family of 29 closely related macrocyclic polyketides isolated in 1994 from the fermentation broth of the gliding myxobacterium Sorangium cellulosum. Disorazoles A₁, E and C₁ have shown exceptional biological activities toward ... ...

    Abstract The disorazoles comprise a family of 29 closely related macrocyclic polyketides isolated in 1994 from the fermentation broth of the gliding myxobacterium Sorangium cellulosum. Disorazoles A₁, E and C₁ have shown exceptional biological activities toward inhibiting the proliferation of human cancer cell lines in picomolar and nanomolar concentrations through the disruption of microtubule polymerization. This review gives a brief introduction describing the biosynthesis and the significance of the disorazoles as a new class of microtubulin disruptors. Another portion of the review focuses on the biology of the disorazoles, specifically disorazole A₁ and C₁, and their antiproliferative efficacy against animal and human tumor cell lines, as well as the available SAR data. The majority of the discussion addresses synthetic efforts, including partial syntheses of various disorazoles and a summary of the total synthesis of disorazole C₁.
    Keywords Sorangium cellulosum ; biosynthesis ; culture media ; humans ; microtubules ; myxobacteria ; neoplasm cells ; polyketides ; polymerization
    Language English
    Dates of publication 2009-0423
    Size p. 585-601.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2002546-4
    ISSN 1460-4752 ; 0265-0568
    ISSN (online) 1460-4752
    ISSN 0265-0568
    DOI 10.1039/b813799b
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article: Allylpalladium umpolung in the three-component coupling synthesis of homoallylic amines.

    Hopkins, Chad D / Malinakova, Helena C

    Organic letters

    2006  Volume 8, Issue 26, Page(s) 5971–5974

    Abstract: Structure: see text] Homoallylic amines and alpha-amino esters were prepared via a Pd(II)-catalyzed coupling of boronic acids and 1,2-nonadiene with ethyl iminoacetate or aliphatic, aromatic, and heteroaromatic imines. The allylpalladium umpolung was ... ...

    Abstract [Structure: see text] Homoallylic amines and alpha-amino esters were prepared via a Pd(II)-catalyzed coupling of boronic acids and 1,2-nonadiene with ethyl iminoacetate or aliphatic, aromatic, and heteroaromatic imines. The allylpalladium umpolung was induced by a Pd(OAc)2 catalyst with commercial phosphine ligands.
    MeSH term(s) Amines/chemical synthesis ; Boronic Acids/chemistry ; Catalysis ; Palladium/chemistry
    Chemical Substances Amines ; Boronic Acids ; Palladium (5TWQ1V240M)
    Language English
    Publishing date 2006-12-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1523-7060
    ISSN 1523-7060
    DOI 10.1021/ol0624528
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Progress Toward Eradication of Dracunculiasis - Worldwide, January 2022-June 2023.

    Hopkins, Donald R / Weiss, Adam J / Yerian, Sarah / Sapp, Sarah G H / Cama, Vitaliano A

    MMWR. Morbidity and mortality weekly report

    2023  Volume 72, Issue 45, Page(s) 1230–1236

    Abstract: ... insecurity in some areas. By 2022, dracunculiasis was endemic in five countries (Angola, Chad, Ethiopia, Mali ... including 606 (88%) in dogs in Chad. Despite these unanticipated challenges as well as the COVID-19 pandemic ... UNICEF, and CDC. In 2012, D. medinensis infections were unexpectedly confirmed in Chadian dogs, and ...

    Abstract The effort to eradicate Dracunculus medinensis, the etiologic agent of dracunculiasis, or Guinea worm disease, commenced at CDC in 1980. In 1986, with an estimated 3.5 million cases worldwide in 20 African and Asian countries, the World Health Assembly called for dracunculiasis elimination. The Guinea Worm Eradication Program (GWEP) was established to help countries with endemic dracunculiasis reach this goal. GWEP is led by The Carter Center and supported by partners that include the World Health Organization, UNICEF, and CDC. In 2012, D. medinensis infections were unexpectedly confirmed in Chadian dogs, and since then, infections in dogs, cats, and baboons have posed a new challenge for GWEP, as have ongoing civil unrest and insecurity in some areas. By 2022, dracunculiasis was endemic in five countries (Angola, Chad, Ethiopia, Mali, and South Sudan), with only 13 human cases identified, the lowest yearly total ever reported. Animal infections, however, were not declining at the same rate: 686 animal infections were reported in 2022, including 606 (88%) in dogs in Chad. Despite these unanticipated challenges as well as the COVID-19 pandemic, countries appear close to reaching the eradication goal. GWEP will continue working with country programs to address animal infections, civil unrest, and insecurity, that challenge the eradication of Guinea worm.
    MeSH term(s) Humans ; Animals ; Dogs ; Disease Eradication ; Dracunculiasis/epidemiology ; Dracunculiasis/prevention & control ; Dracunculiasis/veterinary ; Pandemics ; Global Health ; World Health Organization
    Language English
    Publishing date 2023-11-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 412775-4
    ISSN 1545-861X ; 0149-2195
    ISSN (online) 1545-861X
    ISSN 0149-2195
    DOI 10.15585/mmwr.mm7245a4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Synthesis of homoallylic alcohols via palladium-catalyzed three-component coupling of an arylboronic acid with allenes and aldehydes.

    Hopkins, Chad D / Malinakova, Helena C

    Organic letters

    2004  Volume 6, Issue 13, Page(s) 2221–2224

    Abstract: reaction: see text] Racemic homoallylic alcohols have been synthesized by palladium-catalyzed three-component coupling of an arylboronic acid, an allene, and an aldehyde. ...

    Abstract [reaction: see text] Racemic homoallylic alcohols have been synthesized by palladium-catalyzed three-component coupling of an arylboronic acid, an allene, and an aldehyde.
    Language English
    Publishing date 2004-06-24
    Publishing country United States
    Document type Journal Article
    ISSN 1523-7060
    ISSN 1523-7060
    DOI 10.1021/ol0492795
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Total synthesis of (-)-CP2-disorazole C1.

    Hopkins, Chad D / Schmitz, John C / Chu, Edward / Wipf, Peter

    Organic letters

    2011  Volume 13, Issue 15, Page(s) 4088–4091

    Abstract: The total synthesis of a bis-cyclopropane analog of the antimitotic natural product (-)-disorazole C(1) was accomplished in 23 steps and 1.1% overall yield. A vinyl cyclopropane cross-metathesis reaction generated a key (E)-alkene segment of the target ... ...

    Abstract The total synthesis of a bis-cyclopropane analog of the antimitotic natural product (-)-disorazole C(1) was accomplished in 23 steps and 1.1% overall yield. A vinyl cyclopropane cross-metathesis reaction generated a key (E)-alkene segment of the target molecule. IC(50) determinations of (-)-CP(2)-disorazole C(1) in human colon cancer cell lines indicated low nanomolar cytotoxic properties. Accordingly, this synthetic bioisostere represents the first biologically active disorazole analog not containing a conjugated diene or polyene substructure element.
    MeSH term(s) Cell Line, Tumor ; Cell Survival/drug effects ; Ether/chemistry ; Humans ; Macrolides/chemical synthesis ; Macrolides/pharmacology ; Molecular Structure ; Oxazoles/chemical synthesis ; Oxazoles/pharmacology
    Chemical Substances CP2-disorazole C1 ; Macrolides ; Oxazoles ; disorazole C1 ; Ether (0F5N573A2Y)
    Language English
    Publishing date 2011-07-08
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1523-7052
    ISSN (online) 1523-7052
    DOI 10.1021/ol2015994
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Bis-cyclopropane analog of disorazole C1 is a microtubule-destabilizing agent active in ABCB1-overexpressing human colon cancer cells.

    Wu, Shaoyu / Guo, Zhijian / Hopkins, Chad D / Wei, Ning / Chu, Edward / Wipf, Peter / Schmitz, John C

    Oncotarget

    2015  Volume 6, Issue 38, Page(s) 40866–40879

    Abstract: The novel, chemically stabilized disorazole analog, (-)-CP2-disorazole C1 (1) displayed potent anti-proliferative activity against a broad-spectrum of human colorectal cancer cells. HCT15 and H630R1 cell lines expressing high basal levels of the ABCB1 ... ...

    Abstract The novel, chemically stabilized disorazole analog, (-)-CP2-disorazole C1 (1) displayed potent anti-proliferative activity against a broad-spectrum of human colorectal cancer cells. HCT15 and H630R1 cell lines expressing high basal levels of the ABCB1 protein, known to cause multi-drug resistance, were also sensitive to growth inhibition by 1 but were resistant to both vincristine and docetaxel, two commonly used microtubule inhibitors. Compound 1 exhibited strong inhibition of tubulin polymerization at a level comparable to vincristine. In addition, treatment with 1 resulted in decreased protein levels of β-tubulin but not α-tubulin. An analysis of cellular proteins known to interact with microtubules showed that 1 caused decreased expression of c-Myc, APC, Rb, and additional key cellular signaling pathways in CRC cells. Treatment with compound 1 also resulted in G2/M cell cycle arrest and induction of apoptosis, but not senescence. Furthermore, endothelial spheroid sprouting assays demonstrated that 1 suppressed angiogenesis and can, therefore, potentially prevent cancer cells from spreading and metastasizing. Taken together, these findings suggest that the microtubule disruptor 1 may be a potential drug candidate for the treatment of mCRC.
    MeSH term(s) ATP Binding Cassette Transporter, Sub-Family B/metabolism ; Antineoplastic Agents/pharmacology ; Apoptosis/drug effects ; Blotting, Western ; Cell Cycle/drug effects ; Cell Movement/drug effects ; Cell Proliferation/drug effects ; Colonic Neoplasms/drug therapy ; Colonic Neoplasms/metabolism ; Colonic Neoplasms/pathology ; Drug Resistance, Multiple/drug effects ; Fluorescent Antibody Technique ; Humans ; Immunoenzyme Techniques ; Macrolides/pharmacology ; Microtubules/chemistry ; Microtubules/drug effects ; Oxazoles/pharmacology ; Tubulin Modulators/pharmacology ; Tumor Cells, Cultured
    Chemical Substances ABCB1 protein, human ; ATP Binding Cassette Transporter, Sub-Family B ; Antineoplastic Agents ; Macrolides ; Oxazoles ; Tubulin Modulators ; disorazole C1
    Language English
    Publishing date 2015-12-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2560162-3
    ISSN 1949-2553 ; 1949-2553
    ISSN (online) 1949-2553
    ISSN 1949-2553
    DOI 10.18632/oncotarget.5885
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top