LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 21

Search options

  1. Article ; Online: The role of machine learning method in the synthesis and biological ınvestigation of heterocyclic compounds.

    Mermer, Arif

    Molecular diversity

    2021  Volume 26, Issue 3, Page(s) 1875–1892

    Abstract: Machine learning (ML) methods have attracted increasing interest in chemistry as in all fields of science in recent years. This method is of great importance for the design of targeted bioactive compounds, especially by avoiding loss of time, money, and ... ...

    Abstract Machine learning (ML) methods have attracted increasing interest in chemistry as in all fields of science in recent years. This method is of great importance for the design of targeted bioactive compounds, especially by avoiding loss of time, money, and chemicals. There are lots of online web-based platforms such as LibSVM and OCHEM for the application of ML methods. In this paper, it has been examined the literature data on the activity predictions of heterocyclic compounds, biological activity results such as antiurease, HIV-1 Integrase, E. Coli DNA Gyrase B, and antifungal, pharmacophore-based studies, synthesis, and finding possible inhibitors using different machine learning methods.
    MeSH term(s) DNA Gyrase ; Escherichia coli ; Heterocyclic Compounds/pharmacology ; Machine Learning ; Quantitative Structure-Activity Relationship
    Chemical Substances Heterocyclic Compounds ; DNA Gyrase (EC 5.99.1.3)
    Language English
    Publishing date 2021-10-20
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 1376507-3
    ISSN 1573-501X ; 1381-1991
    ISSN (online) 1573-501X
    ISSN 1381-1991
    DOI 10.1007/s11030-021-10264-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: The Importance of Rhodanine Scaffold in Medicinal Chemistry: A Comprehensive Overview.

    Mermer, Arif

    Mini reviews in medicinal chemistry

    2020  Volume 21, Issue 6, Page(s) 738–789

    Abstract: After the clinical use of epalrestat that contains a rhodanine ring, in type II diabetes mellitus and diabetic complications, rhodanin-based compounds have become an important class of heterocyclic in the field of medicinal chemistry. Various ... ...

    Abstract After the clinical use of epalrestat that contains a rhodanine ring, in type II diabetes mellitus and diabetic complications, rhodanin-based compounds have become an important class of heterocyclic in the field of medicinal chemistry. Various modifications to the rhodanine ring have led to a broad spectrum of biological activity of these compounds. Synthesis of rhodanine derivatives, depended on advenced throughput scanning hits, frequently causes potent and selective modulators of targeted enzymes or receptors, which apply their pharmacological activities through different mechanisms of action. Rhodanine-based compounds will likely stay a privileged scaffold in drug discovery because of different probability of chemical modifications of the rhodanine ring. We have, therefore reviewed their biological activities and structure activity relationship.
    Language English
    Publishing date 2020-12-18
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2104081-3
    ISSN 1875-5607 ; 1389-5575
    ISSN (online) 1875-5607
    ISSN 1389-5575
    DOI 10.2174/1389557521666201217144954
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Recent advances in triazoles as tyrosinase inhibitors.

    Mermer, Arif / Demirci, Serpil

    European journal of medicinal chemistry

    2023  Volume 259, Page(s) 115655

    Abstract: The tyrosinase enzyme, which is widely found in microorganisms, animals and plants, has a significant position in melanogenesis, plays an important role in undesirable browning of fruits and vegetables, antibiotic resistance, skin pigment formation, ... ...

    Abstract The tyrosinase enzyme, which is widely found in microorganisms, animals and plants, has a significant position in melanogenesis, plays an important role in undesirable browning of fruits and vegetables, antibiotic resistance, skin pigment formation, sclerotization of cuticle, neurodegeneration, etc. Therefore, with the wide potential application fields of tyrosinase in food, agriculture, cosmetics and pharmaceutical industries, which has become the target enzyme for the development of therapeutic agents such as antibrowning, anticancer, antibacterial, skin whitening, insecticides, etc., a large number of synthetic tyrosinase inhibitors have been widely reported in recent years. The triazole ring, which has a broad spectrum of biological action, is of increasing interest in the synthesis of new tyrosinase inhibitors. In this review, tyrosinase inhibition effects, structure-activity relationships, enzyme inhibition kinetics and mechanisms of action of 1,2,3- or 1,2,4-triazole derivatives were investigated. The data gathered is anticipated to supply rational guidance and an influential strategy for the development of novel, potent and safe tyrosinase inhibitors for better practical application in the future.
    MeSH term(s) Animals ; Enzyme Inhibitors/chemistry ; Enzyme Inhibitors/pharmacology ; Monophenol Monooxygenase/antagonists & inhibitors ; Plants/metabolism ; Structure-Activity Relationship ; Triazoles/chemistry ; Triazoles/pharmacology
    Chemical Substances Enzyme Inhibitors ; Monophenol Monooxygenase (EC 1.14.18.1) ; Triazoles
    Language English
    Publishing date 2023-07-20
    Publishing country France
    Document type Journal Article ; Review
    ZDB-ID 188597-2
    ISSN 1768-3254 ; 0009-4374 ; 0223-5234
    ISSN (online) 1768-3254
    ISSN 0009-4374 ; 0223-5234
    DOI 10.1016/j.ejmech.2023.115655
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Development, synthesis and validation of improved c-Myc/Max inhibitors.

    Yıldırım, Sümbül / Kocabaş, Fatih / Mermer, Arif

    Journal of cellular and molecular medicine

    2024  Volume 28, Issue 8, Page(s) e18272

    Abstract: The pathophysiological foundations of various diseases are often subject to alteration through the utilization of small compounds, rendering them invaluable tools for the exploration and advancement of novel therapeutic strategies. Within the scope of ... ...

    Abstract The pathophysiological foundations of various diseases are often subject to alteration through the utilization of small compounds, rendering them invaluable tools for the exploration and advancement of novel therapeutic strategies. Within the scope of this study, we meticulously curated a diverse library of novel small compounds meticulously designed to specifically target the c-Myc/Max complex. We conducted in vitro examinations of novel c-Myc inhibitors across a spectrum of cancer cell lines, including PANC1 (pancreatic adenocarcinoma), MCF7 (breast carcinoma), DU-145 (prostate carcinoma), and A549 (lung cancer). The initial analysis involved a 25 μM dose, which enabled the identification of potent anticancer compounds effective against a variety of tumour types. We identified c-Myc inhibitors with remarkable potency, featuring IC50 values as low as 1.6 μM and up to 40 times more effective than the reference molecule in diminishing cancer cell viability. Notably, c-Myc-i7 exhibited exceptional selectivity, displaying 37-fold and 59-fold preference for targeting prostate and breast cancers, respectively, over healthy cells. Additionally, we constructed drug-likeness models. This study underscores the potential for in vitro investigations of various tumour types using novel c-Myc inhibitors to yield ground-breaking and efficacious anticancer compounds.
    MeSH term(s) Male ; Humans ; Adenocarcinoma ; Pancreatic Neoplasms ; Cell Line ; Cell Nucleus ; Cell Survival
    Language English
    Publishing date 2024-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2074559-X
    ISSN 1582-4934 ; 1582-4934 ; 1582-1838
    ISSN (online) 1582-4934
    ISSN 1582-4934 ; 1582-1838
    DOI 10.1111/jcmm.18272
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Development of novel 1,2,4-triazole containing compounds with anticancer and potent anti-CB1 activity.

    Yıldırım, Sümbül / Ayvaz, Aslıhan / Mermer, Arif / Kocabaş, Fatih

    Journal of biomolecular structure & dynamics

    2023  Volume 42, Issue 8, Page(s) 3862–3873

    Abstract: There is still an unmet need for novel and improved anti-cancer compounds. Nitrogen atoms have heterocyclic ring moieties, which have been shown to have powerful anticancer properties in both natural and synthetic derivatives. Due to their dipole ... ...

    Abstract There is still an unmet need for novel and improved anti-cancer compounds. Nitrogen atoms have heterocyclic ring moieties, which have been shown to have powerful anticancer properties in both natural and synthetic derivatives. Due to their dipole character, hydrogen bonding capacity, rigidity and solubility, 1,2,4-triazoles are particularly effective pharmacophores, interacting with biological receptors with high affinity. Thus, novel 1,2,4-triazole-containing molecular derivatives were synthesized using green chemistry methods, microwave irradiation and ultrasonication, and these methods' operational simplicity and maximum greener synthetic efficiency with green chemistry metrics calculations will be attractive for academic and industrial research and tested against three distinct human cancer cell lines including PANC1 (pancreatic cancer), DU145 (prostate cancer), MCF7 (breast cancer) and one fibroblast cell line (HDF). Here, we showed that compounds
    MeSH term(s) Humans ; Triazoles/chemistry ; Triazoles/pharmacology ; Antineoplastic Agents/pharmacology ; Antineoplastic Agents/chemistry ; Cell Line, Tumor ; Molecular Docking Simulation ; Structure-Activity Relationship ; Cell Proliferation/drug effects ; Cell Survival/drug effects ; Molecular Dynamics Simulation ; Molecular Structure
    Chemical Substances Triazoles ; Antineoplastic Agents ; 1,2,4-triazole (288-88-0)
    Language English
    Publishing date 2023-07-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2023.2239909
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Synthesis, characterization, DFT calculation, antioxidant activity, ADMET and molecular docking of thiosemicarbazide derivatives and their Cu (II) complexes.

    Mermer, Arif / Alyar, Saliha

    Chemico-biological interactions

    2021  Volume 351, Page(s) 109742

    Abstract: In this work, new thiosemicarbazides (ECA-1, ECA-2) and their Cu (II) complexes (ECA-1-Cu, ECA-2-Cu) were synthesized and their structures were characterized ... ...

    Abstract In this work, new thiosemicarbazides (ECA-1, ECA-2) and their Cu (II) complexes (ECA-1-Cu, ECA-2-Cu) were synthesized and their structures were characterized by
    MeSH term(s) Antioxidants/chemical synthesis ; Antioxidants/chemistry ; Antioxidants/metabolism ; Antioxidants/pharmacokinetics ; Coordination Complexes/chemical synthesis ; Coordination Complexes/chemistry ; Coordination Complexes/metabolism ; Coordination Complexes/pharmacokinetics ; Copper/chemistry ; Density Functional Theory ; Humans ; Ligands ; Models, Chemical ; Molecular Docking Simulation ; Peroxiredoxins/metabolism ; Protein Binding ; Semicarbazides/chemical synthesis ; Semicarbazides/chemistry ; Semicarbazides/metabolism ; Semicarbazides/pharmacokinetics
    Chemical Substances Antioxidants ; Coordination Complexes ; Ligands ; Semicarbazides ; Copper (789U1901C5) ; PRDX2 protein, human (EC 1.11.1.15) ; Peroxiredoxins (EC 1.11.1.15)
    Language English
    Publishing date 2021-11-11
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 218799-1
    ISSN 1872-7786 ; 0009-2797
    ISSN (online) 1872-7786
    ISSN 0009-2797
    DOI 10.1016/j.cbi.2021.109742
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Exploring the Anti-Cancer Potential of Hispidin: A Comprehensive in Silico and in Vitro Study on Human Osteosarcoma Saos2 Cells.

    Benarous, Khedidja / Serseg, Talia / Mermer, Arif / Tahmasebifar, Aydin / Boulebd, Houssem / Linani, Abderahmane

    Chemistry & biodiversity

    2024  , Page(s) e202301833

    Abstract: Hispidin was initially discovered in basidiomycete Inonotus hispidus (Bull.) P. Karst and this extraordinary compound possesses immense potency and can be extracted from the wild mushroom through specialized bioreactor cultivation techniques. In our ... ...

    Abstract Hispidin was initially discovered in basidiomycete Inonotus hispidus (Bull.) P. Karst and this extraordinary compound possesses immense potency and can be extracted from the wild mushroom through specialized bioreactor cultivation techniques. In our study, we isolated it from Inonotus hispidus (Bull.) P. Karst., with a yield of 3.6 %. We identified and characterized hispidin through the implementation of spectroscopic techniques such as FTIR, NMR, and MS. Additionally, we utilized Thermogravimetric Analysis for thermal characterization of the compound. Computational studies based on DFT were performed to investigate the molecular structure, electronic properties, and chemical reactivity of hispidin. PASS analysis for hispidin demonstrated that 19 of them are anti-neoplastic activities. The Pharmacology prediction of hispidin confirm that it is not toxic, non-carcinogenesis with a good human intestinal absorption. The effect of hispidin on the viability of bone cancer cells was evaluated by MTT assay. The results showed that hispidin significantly reduced SaoS2 cell viability in a dose-dependent manner. Molecular docking was carried out using five targets related to bone cancer to determine the interactions between hispidin and the studied proteins. The results demonstrate that hispidin is a good inhibitor for the five targets. Dynamic simulation shows a good stability of the complex hispidin-protein.
    Language English
    Publishing date 2024-03-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2139001-0
    ISSN 1612-1880 ; 1612-1872
    ISSN (online) 1612-1880
    ISSN 1612-1872
    DOI 10.1002/cbdv.202301833
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Synthesis and evaluation of the antioxidant and anti-tyrosinase activities of thiazolyl hydrazone derivatives and their application in the anti-browning of fresh-cut potato

    Djafarou, Selsabil / Mermer, Arif / Barut, Burak / Yılmaz, Gizem Tatar / Amine khodja, Imene / Boulebd, Houssem

    Food Chemistry. 2023 July, v. 414 p.135745-

    2023  

    Abstract: Tyrosinase is a key enzyme in the biosynthesis of melanin, which is responsible for the browning of foods as well as many skin disorders. In order to develop new anti-browning agents with dual antioxidant and anti-tyrosinase capacities, a series of 30 ... ...

    Abstract Tyrosinase is a key enzyme in the biosynthesis of melanin, which is responsible for the browning of foods as well as many skin disorders. In order to develop new anti-browning agents with dual antioxidant and anti-tyrosinase capacities, a series of 30 thiazolyl hydrazone derivatives were synthesized. Among the molecules prepared, 6 and 30 were found to be the most potent tyrosinase inhibitors with IC₅₀ values ​​comparable to that of kojic acid. Interestingly, 6 also has the highest radical scavenging activity among the prepared molecules. The inhibition kinetics study indicated that 6 is a non-competitive inhibitor while 30 inhibits tyrosinase competitively. The anti-browning assay of fresh-cut potato slices revealed that 6 and 30 are potent anti-browning agents with a capacity as high as kojic acid. The mechanisms of free radical scavenging and tyrosinase inhibition have been fully investigated in silico using computational kinetics, molecular docking, and molecular dynamics simulations.
    Keywords antioxidants ; biosynthesis ; computer simulation ; enzymes ; food chemistry ; free radicals ; hydrazones ; kojic acid ; melanin ; molecular dynamics ; potatoes ; Thiazolyl hydrazine ; Anti-tyrosinase ; Anti-browning ; DFT calculations ; Molecular modeling
    Language English
    Dates of publication 2023-07
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2023.135745
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article ; Online: Recent studies of nitrogen containing heterocyclic compounds as novel antiviral agents: A review.

    Mermer, Arif / Keles, Turgut / Sirin, Yakup

    Bioorganic chemistry

    2021  Volume 114, Page(s) 105076

    Abstract: N-heterocycles are important, not only because of their abundance, but above all because of their chemical, biological and technical significance. They play an important role in biological investigation such as anticancer, antiinflammatory, antibacterial, ...

    Abstract N-heterocycles are important, not only because of their abundance, but above all because of their chemical, biological and technical significance. They play an important role in biological investigation such as anticancer, antiinflammatory, antibacterial, antiviral, anti-tumor, antidiabetic, etc. In this study, we focused on examining synthesized some 5- or 6-ring N-heterocyclic compounds that showed the antiviral activity in last 5 years, and investigation of these compounds structure-activity relationship studies. This review will be useful to scientists in research fields of organic synthesis, medicinal chemistry, and pharmacology.
    MeSH term(s) Antiviral Agents/chemical synthesis ; Antiviral Agents/chemistry ; Antiviral Agents/pharmacology ; Heterocyclic Compounds/chemical synthesis ; Heterocyclic Compounds/chemistry ; Heterocyclic Compounds/pharmacology ; Humans ; Microbial Sensitivity Tests ; Nitrogen/chemistry ; Nitrogen/pharmacology ; Viruses/drug effects
    Chemical Substances Antiviral Agents ; Heterocyclic Compounds ; Nitrogen (N762921K75)
    Language English
    Publishing date 2021-06-10
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 120080-x
    ISSN 1090-2120 ; 0045-2068
    ISSN (online) 1090-2120
    ISSN 0045-2068
    DOI 10.1016/j.bioorg.2021.105076
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Synthesis of novel pancreatic lipase inhibitors: Biological investigation and

    Mermer, Arif / Demirci, Serpil / Tatar, Gizem

    Journal of biomolecular structure & dynamics

    2021  Volume 40, Issue 2, Page(s) 931–940

    Abstract: The targeted compounds which are Schiff base derivatives were prepared by reaction of 6-(4-phenyl-piperazin-1-yl)pyridine-3-ylamine with 2-hydroxy and 2,6-dichloro benzaldehyde. These compounds were isolated, purified and then spectrally characterized ... ...

    Abstract The targeted compounds which are Schiff base derivatives were prepared by reaction of 6-(4-phenyl-piperazin-1-yl)pyridine-3-ylamine with 2-hydroxy and 2,6-dichloro benzaldehyde. These compounds were isolated, purified and then spectrally characterized via FT-IR,
    MeSH term(s) Animals ; Enzyme Inhibitors/chemistry ; Lipase/chemistry ; Molecular Docking Simulation ; Pancreas ; Spectroscopy, Fourier Transform Infrared ; Swine
    Chemical Substances Enzyme Inhibitors ; Lipase (EC 3.1.1.3)
    Language English
    Publishing date 2021-07-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2021.1950573
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top