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  1. Article ; Online: Structural dynamics and susceptibility of isobutylamido thiazolyl resorcinol (Thiamidol

    Mahalapbutr, Panupong / Nuramrum, Napat / Rungrotmongkol, Thanyada / Kongtaworn, Napat / Sabuakham, Sahachai

    Journal of biomolecular structure & dynamics

    2023  Volume 41, Issue 21, Page(s) 11810–11817

    Abstract: Tyrosinase, a key enzyme catalyzing a rate-limiting step of the melanin production, has been the most promising target for suppressing hyperpigmentation. Although a number of tyrosinase inhibitors have been developed, most of those lack clinical efficacy ...

    Abstract Tyrosinase, a key enzyme catalyzing a rate-limiting step of the melanin production, has been the most promising target for suppressing hyperpigmentation. Although a number of tyrosinase inhibitors have been developed, most of those lack clinical efficacy as they were identified from using mushroom tyrosinase (mTyr) as the target. Previous study revealed that the inhibitory effect of isobutylamido thiazolyl resorcinol (Thiamidol
    MeSH term(s) Humans ; Monophenol Monooxygenase ; Agaricales ; Molecular Docking Simulation ; Thiazoles ; Enzyme Inhibitors/pharmacology ; Enzyme Inhibitors/chemistry
    Chemical Substances Monophenol Monooxygenase (EC 1.14.18.1) ; thiamidol ; Thiazoles ; Enzyme Inhibitors
    Language English
    Publishing date 2023-01-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2023.2167001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Integration of In Silico Strategies for Drug Repositioning towards P38α Mitogen-Activated Protein Kinase (MAPK) at the Allosteric Site.

    Suriya, Utid / Mahalapbutr, Panupong / Rungrotmongkol, Thanyada

    Pharmaceutics

    2022  Volume 14, Issue 7

    Abstract: P38α mitogen-activated protein kinase (p38α MAPK), one of the p38 MAPK isoforms participating in a signaling cascade, has been identified for its pivotal role in the regulation of physiological processes such as cell proliferation, differentiation, ... ...

    Abstract P38α mitogen-activated protein kinase (p38α MAPK), one of the p38 MAPK isoforms participating in a signaling cascade, has been identified for its pivotal role in the regulation of physiological processes such as cell proliferation, differentiation, survival, and death. Herein, by shedding light on docking- and 100-ns dynamic-based screening from 3210 FDA-approved drugs, we found that lomitapide (a lipid-lowering agent) and nilotinib (a Bcr-Abl fusion protein inhibitor) could alternatively inhibit phosphorylation of p38α MAPK at the allosteric site. All-atom molecular dynamics simulations and free energy calculations including end-point and QM-based ONIOM methods revealed that the binding affinity of the two screened drugs exhibited a comparable level as the known p38α MAPK inhibitor (BIRB796), suggesting the high potential of being a novel p38α MAPK inhibitor. In addition, noncovalent contacts and the number of hydrogen bonds were found to be corresponding with the great binding recognition. Key influential amino acids were mostly hydrophobic residues, while the two charged residues including E71 and D168 were considered crucial ones due to their ability to form very strong H-bonds with the focused drugs. Altogether, our contributions obtained here could be theoretical guidance for further conducting experimental-based preclinical studies necessary for developing therapeutic agents targeting p38α MAPK.
    Language English
    Publishing date 2022-07-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527217-2
    ISSN 1999-4923
    ISSN 1999-4923
    DOI 10.3390/pharmaceutics14071461
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Corosolic Acid Induced Apoptosis via Upregulation of Bax/Bcl-2 Ratio and Caspase-3 Activation in Cholangiocarcinoma Cells.

    Jedram, Onanong / Maphanao, Pornpattra / Karnchanapandh, Kun / Mahalapbutr, Panupong / Thanan, Raynoo / Sakonsinsiri, Chadamas

    ACS omega

    2023  Volume 9, Issue 1, Page(s) 1278–1286

    Abstract: Cholangiocarcinoma (CCA), an aggressive malignancy arising from the biliary epithelium, exhibits a high incidence in Thailand. CCA usually lacks specific symptoms and is typically diagnosed in its advanced stages, presenting significant treatment ... ...

    Abstract Cholangiocarcinoma (CCA), an aggressive malignancy arising from the biliary epithelium, exhibits a high incidence in Thailand. CCA usually lacks specific symptoms and is typically diagnosed in its advanced stages, presenting significant treatment challenges. Current CCA therapeutic options, including surgery, chemotherapy, and radiation, have limited success rates and often cause side effects. Nature-derived compounds hold promise for reducing undesirable adverse effects and are an excellent source of anticancer drugs. Corosolic acid (CA), a triterpenoid found in
    Language English
    Publishing date 2023-12-19
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c07556
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Corosolic Acid Induced Apoptosis via Upregulation of Bax/Bcl‑2 Ratio and Caspase‑3 Activation in Cholangiocarcinoma Cells

    Onanong Jedram / Pornpattra Maphanao / Kun Karnchanapandh / Panupong Mahalapbutr / Raynoo Thanan / Chadamas Sakonsinsiri

    ACS Omega, Vol 9, Iss 1, Pp 1278-

    2023  Volume 1286

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Enhancing solubility and stability of piperine using β-cyclodextrin derivatives: computational and experimental investigations.

    Ali, Saba / Saokaew, Phattharapawn / Aman, Aamir / Todsaporn, Duangjai / Sanachai, Kamonpan / Krusong, Kuakarun / Hannongbua, Supot / Wolschann, Peter / Mahalapbutr, Panupong / Rungrotmongkol, Thanyada

    Journal of biomolecular structure & dynamics

    2024  , Page(s) 1–14

    Abstract: Piperine (PP), a natural alkaloid found in black pepper, possesses significant bioactivities. However, its use in pharmaceutical applications is hindered by low water solubility and susceptibility to UV light degradation. To overcome these challenges, we ...

    Abstract Piperine (PP), a natural alkaloid found in black pepper, possesses significant bioactivities. However, its use in pharmaceutical applications is hindered by low water solubility and susceptibility to UV light degradation. To overcome these challenges, we investigated the potential of β-cyclodextrin (βCD) and its derivatives with dimethyl (DMβCD), hydroxy-propyl (HPβCD) and sulfobutyl-ether (SBEβCD) substitutions to enhance the solubility and stability of PP. This study employed computational and experimental approaches to examine the complexation between PP and βCDs. The results revealed the formation of two types of inclusion complexes: the P-form and M-form involving the insertion of piperidine moiety and the methylene-di-oxy-phenyl moiety, respectively. These complexes primarily rely on van der Waals interactions. Among the three derivatives, the PP/SBEβCD complex exhibited the highest stability followed by HPβCD, as attributed to maximum atom contacts and minimal solvent accessibility. Solubility studies confirmed the formation of inclusion complexes in a 1:1 ratio. Notably, the stability constant of the inclusion complex was approximately two-fold higher with SBEβCD and HPβCD compared to βCD. The DSC thermograms provided confirmation of the formation of the inclusion complex between the host and guest. These findings highlight the potential of βCD derivatives to effectively encapsulate PP, improving its solubility and presenting new opportunities for its pharmaceutical applications.Communicated by Ramaswamy H. Sarma.
    Language English
    Publishing date 2024-01-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2024.2305696
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Discovery of amphotericin B, an antifungal drug as tyrosinase inhibitor with potent anti-melanogenic activity.

    Mahalapbutr, Panupong / Sabuakham, Sahachai / Nasoontorn, Sutita / Rungrotmongkol, Thanyada / Silsirivanit, Atit / Suriya, Utid

    International journal of biological macromolecules

    2023  Volume 246, Page(s) 125587

    Abstract: Tyrosinase, a rate-limiting enzyme for melanin production, has been the most efficient target for the development of depigmenting agents. Although hydroquinone, kojic acid, and arbutin are the most well-known tyrosinase inhibitors, their adverse effects ... ...

    Abstract Tyrosinase, a rate-limiting enzyme for melanin production, has been the most efficient target for the development of depigmenting agents. Although hydroquinone, kojic acid, and arbutin are the most well-known tyrosinase inhibitors, their adverse effects are inevitable. In the present study, an in silico drug repositioning combined with experimental validation was performed to search for novel potent tyrosinase inhibitors. Docking-based virtual screening results revealed that, among the 3210 FDA-approved drugs available in the ZINC database, amphotericin B, an antifungal drug exhibited the highest binding efficiency against human tyrosinase. Results from tyrosinase inhibition assay demonstrated that amphotericin B could inhibit the activity of mushroom and cellular tyrosinases, especially from MNT-1 human melanoma cells. Molecular modeling results revealed that amphotericin B/human tyrosinase complex exhibited high stability in an aqueous environment. Melanin assay results demonstrated that amphotericin B significantly suppressed melanin production in α-MSH-induced B16F10 murine melanoma and MNT-1 human melanoma cell lines better than the known inhibitor, kojic acid. Mechanistically, amphotericin B treatment significantly activated ERK and Akt signaling pathways, resulting in the decreased expression of MITF and tyrosinase. The obtained results may pursue pre-clinical and clinical studies to examine the possibility of using amphotericin B as an alternative treatment for hyperpigmentation disorders.
    Language English
    Publishing date 2023-06-27
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2023.125587
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Enhancing solubility and stability of sorafenib through cyclodextrin-based inclusion complexation:

    Aman, Aamir / Ali, Saba / Mahalapbutr, Panupong / Krusong, Kuakarun / Wolschann, Peter / Rungrotmongkol, Thanyada

    RSC advances

    2023  Volume 13, Issue 39, Page(s) 27244–27254

    Abstract: Sorafenib (SOR) is an oral multikinase inhibitor that effectively hampers the growth and spread of cancer cells by targeting angiogenesis and proliferation. However, SOR tablets (Nexavar) have limited oral bioavailability, ranging from 38% to 49%, due to ...

    Abstract Sorafenib (SOR) is an oral multikinase inhibitor that effectively hampers the growth and spread of cancer cells by targeting angiogenesis and proliferation. However, SOR tablets (Nexavar) have limited oral bioavailability, ranging from 38% to 49%, due to their low water solubility. To address this issue, cyclodextrins (CDs), widely used to enhance the solubility and stability of lipophilic drugs by encapsulating them within their molecular structure, were considered in this study. We focused on β-cyclodextrin (βCD) and its derivatives, including hydroxypropyl-β-cyclodextrin (HPβCD), dimethyl-β-cyclodextrin (DMβCD), sulfobutylether-β-cyclodextrin (SBEβCD), and compared them with γ-cyclodextrin (γCD) for generating inclusion complexes with SOR. The 200 ns molecular dynamics simulations revealed that SOR could form inclusion complexes with all CDs in two possible orientations: pyridine group insertion (P-form) and chlorobenzotrifluoride group insertion (C-form), primarily driven by van der Waals interactions. Among the four βCD derivatives studied, SOR exhibited the highest number of atom contacts with SBEβCD and demonstrated the lowest solvent accessibility within the hydrophobic cavity of SBEβCD. These findings correlated with the highest binding affinity of SOR/SBEβCD complex determined by SIE, MM/GBSA, and MM/PBSA methods. Experimental results further supported our computational predictions, in which SBEβCD exhibited a stability constant of 940 M
    Language English
    Publishing date 2023-09-11
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra03867j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: BI6727 and GSK461364A, potent PLK1 inhibitors induce G2/M arrest and apoptosis against cholangiocarcinoma cell lines.

    Riantana, Handy / Waenphimai, Orawan / Mahalapbutr, Panupong / Karnchanapandh, Kun / Vaeteewoottacharn, Kulthida / Wongkham, Sopit / Sawanyawisuth, Kanlayanee

    Pathology, research and practice

    2023  Volume 248, Page(s) 154678

    Abstract: Polo-like kinase 1 (PLK1) is an essential mitotic checkpoint protein that plays a key role in cell cycle division. Overexpression of PLK1 has been associated with poor prognosis in various cancers. Cholangiocarcinoma (CCA) is a lethal bile duct cancer ... ...

    Abstract Polo-like kinase 1 (PLK1) is an essential mitotic checkpoint protein that plays a key role in cell cycle division. Overexpression of PLK1 has been associated with poor prognosis in various cancers. Cholangiocarcinoma (CCA) is a lethal bile duct cancer and the current treatments in inoperable patients have not been satisfactory. In order to develop novel targeted therapies, we investigated the efficacy of BI6727 (volasertib) and GSK461364A, polo-like kinase 1 (PLK1) inhibitors in KKU-100 and KKU-213A CCA cell lines. PLK1 expression was significantly up-regulated in CCA cases compared with normal tissues based on the results derived from GEPIA. Western blot results exhibited PLK1 protein expression in both CCA cell lines. Molecular dynamics simulations and free energy calculations based on MM/GBSA method revealed that BI6727-PLK1 and GSK461364A-PLK1 complexes were stable in an aqueous environment, and their complexation was mainly driven by Van der Waals interaction. BI6727 and GSK461364A clearly suppressed CCA cell proliferation and induced G2/M arrest, accompanied with upregulation of cyclin B1 and phosphorylated Histone H3 at Ser10 (pS10H3), specific markers of mitosis. Furthermore, both compounds triggered mitotic catastrophe followed by cell apoptosis via activation of PARP and Caspase 3, as well as downregulation of Mcl-1 anti-apoptotic protein in both CCA cell lines. In conclusion, pharmacologic PLK1 inhibition by BI6727 and GSK461364A blocked survival of CCA cells by several mechanisms. Our study provides evidence that BI6727 and GSK461364A could be alternative drugs and have potential implications at the clinical level for CCA therapy.
    MeSH term(s) Humans ; Apoptosis ; Cell Line, Tumor ; G2 Phase Cell Cycle Checkpoints ; Cell Cycle Proteins/metabolism ; Cholangiocarcinoma/drug therapy ; Cholangiocarcinoma/pathology ; Cell Proliferation ; Bile Ducts, Intrahepatic/pathology ; Bile Duct Neoplasms/drug therapy ; Bile Duct Neoplasms/pathology ; Polo-Like Kinase 1
    Chemical Substances GSK 461364A ; Cell Cycle Proteins
    Language English
    Publishing date 2023-07-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 391889-0
    ISSN 1618-0631 ; 0344-0338
    ISSN (online) 1618-0631
    ISSN 0344-0338
    DOI 10.1016/j.prp.2023.154678
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Discovery of Novel Naphthoquinone-Chalcone Hybrids as Potent FGFR1 Tyrosine Kinase Inhibitors: Synthesis, Biological Evaluation, and Molecular Modeling.

    Leechaisit, Ronnakorn / Mahalapbutr, Panupong / Boonsri, Pornthip / Karnchanapandh, Kun / Rungrotmongkol, Thanyada / Prachayasittikul, Veda / Prachayasittikul, Supaluk / Ruchirawat, Somsak / Prachayasittikul, Virapong / Pingaew, Ratchanok

    ACS omega

    2023  Volume 8, Issue 36, Page(s) 32593–32605

    Abstract: This work presents a flexible synthesis of 10 novel naphthoquinone-chalcone derivatives ( ...

    Abstract This work presents a flexible synthesis of 10 novel naphthoquinone-chalcone derivatives (
    Language English
    Publishing date 2023-08-30
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c03176
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Molecular basis of the new COVID-19 target neuropilin-1 in complex with SARS-CoV-2 S1 C-end rule peptide and small-molecule antagonists.

    Klaewkla, Methus / Charoenwongpaiboon, Thanapon / Mahalapbutr, Panupong

    Journal of molecular liquids

    2021  Volume 335, Page(s) 116537

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for causing the current coronavirus 2019 (COVID-19) pandemic, uses its spike (S1) protein for host cell attachment and entry. Apart from angiotensin-converting enzyme 2, neuropilin- ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for causing the current coronavirus 2019 (COVID-19) pandemic, uses its spike (S1) protein for host cell attachment and entry. Apart from angiotensin-converting enzyme 2, neuropilin-1 (NRP1) has been recently found to serve as another host factor for SARS-CoV-2 infection; thus, blocking S1-NRP1 interaction can be a potential treatment for COVID-19. Herein, molecular recognition between SARS-CoV-2 S1 C-end rule (CendR) heptapeptide including small-molecule antagonists (EG00229 and EG01377) and the NRP1 was investigated using molecular dynamics simulations and binding free energy calculations based on MM-PBSA method. The binding affinity and the number of hot-spot residues of EG01377/NRP1 complex were higher than those of CendR/NRP1 and EG00229/NRP1 systems, in line with the reported experimental data as well as with the lower water accessibility at the ligand-binding site. The (i) T316, P317, and D320 and (ii) S346, T349, and Y353 residues of NRP1 were confirmed to respectively form H-bonds with the positively charged guanidinium group and the negatively charged carboxyl moiety of all studied ligands. Moreover, Rosetta protein design was employed to improve the binding affinity between CendR peptide and NRP1. The newly designed peptides, especially R683G and A684M, exhibited higher binding efficiency than the native CendR heptapeptide as well as the small-molecule EG00229 by forming more H-bonds and hydrophobic interactions with NPR1, suggesting that these designed peptides could be promising NRP1 inhibitors to combat SARS-CoV-2 infection.
    Language English
    Publishing date 2021-05-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1491496-7
    ISSN 1873-3166 ; 0167-7322
    ISSN (online) 1873-3166
    ISSN 0167-7322
    DOI 10.1016/j.molliq.2021.116537
    Database MEDical Literature Analysis and Retrieval System OnLINE

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