1
|
Bhattacharjee S, Seth D. How Polyoxometalate Promote the Aggregation of a Cyanine Dye in the Aqueous Solution of Non-Ionic Copolymers of Varying Hydrophilic-Lipophilic Balance? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13935-13949. [PMID: 38913761 DOI: 10.1021/acs.langmuir.4c01086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The nonradiative pathway leading to the photoisomerization of a cyanine dye is well-established information. However, the modulations induced in the photoisomerization pathway by a Keggin-type polyoxometalate in a confined media is new. Our study reveals that, in the presence of pluronic block copolymers F-108 and P-123, phosphomolybdic acid hydrate (PMA) promotes the aggregation of 3,3'-diethylthiadicarbocyanine iodide (DTDCI). The absorption spectra show a clear indication of a red-shifted trimer band in F-108 and P-123, whereas it is absent in F-127 and P-84. Fluorescence emission studies suggest that, in the presence of PMA, the rate of photoisomerization is accelerated in F-108, P-123, and P-84 micelles, whereas it is retarded in F-127 micelles. Time-resolved studies in the presence of PMA indicate the preference of F-108, P-84, and P-123 toward the trapped conformer of DTDCI, whereas F-127 favors the formation of photoisomer of DTDCI. Our findings imply the importance of the interplay between the hydrophobic and electrostatic interactions between the DTDCI cations and the PMA anions in nonionic micelles of varying hydrophilic-lipophilic balance (HLB). Dynamic light scattering (DLS) data suggest a modulation by PMA in the intermicellar electrostatic repulsions of a hydrophilic copolymer micelle, whereas its unaffected in a hydrophobic copolymeric micelle.
Collapse
Affiliation(s)
- Sanyukta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India
| |
Collapse
|
2
|
Rehman F, Abubakar M, Ridzwan NFW, Mohamad SB, Abd Halim AA, Tayyab S. Deciphering the binding mode and structural perturbations in floxuridine-human serum albumin complexation with spectroscopic, microscopic, and computational techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123641. [PMID: 38061108 DOI: 10.1016/j.saa.2023.123641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/29/2023] [Accepted: 11/10/2023] [Indexed: 01/13/2024]
Abstract
The binding mode of antineoplastic antimetabolite, floxuridine (FUDR), with human serum albumin (HSA), the leading carrier in blood circulation, was ascertained using multi-spectroscopic, microscopic, and computational techniques. A static fluorescence quenching was established due to decreased Ksv values with rising temperatures, suggesting FUDR-HSA complexation. UV-vis absorption spectral results also supported this conclusion. The binding constant, Ka values, were found within 9.7-7.9 × 103 M-1 at 290, 300, and 310 K, demonstrating a moderate binding affinity for the FUDR-HSA system. Thermodynamic data (ΔS = +46.35 J.mol-1.K-1 and ΔH = -8.77 kJ.mol-1) predicted the nature of stabilizing forces (hydrogen-bonds, hydrophobic, and van der Waals interactions) for the FUDR-HSA complex. Circular dichroism spectra displayed a minor disruption in the protein's 2° and 3° structures. At the same time, atomic force microscopy images proved variations in the FUDR-HSA surface morphology, confirming its complex formation. The protein's microenvironment around Trp/Tyr residues was also modified, as judged by 3-D fluorescence spectra. FUDR-bound HSA showed better resistance against thermal stress. As disclosed from ligand displacement studies, the FUDR binding site was placed in subdomain IIA (Site I). Further, the molecular docking analysis corroborated the competing displacement studies. Molecular dynamics evaluations revealed that the complex achieved equilibrium during simulations, confirming the FUDR-HSA complex's stability.
Collapse
Affiliation(s)
- Fazal Rehman
- Biochemistry Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Mujaheed Abubakar
- Biochemistry Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Nor Farrah Wahidah Ridzwan
- Bioinformatics Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia
| | - Saharuddin B Mohamad
- Bioinformatics Program, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Malaysia.
| | - Adyani Azizah Abd Halim
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry, Universiti Malaya, Malaysia
| | - Saad Tayyab
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, Malaysia.
| |
Collapse
|
3
|
Pathak S, Gupta R, Parkar H, Joshi N, Nagotu S, Kale A. The role of Colchicine on actin polymerization dynamics: as a potent anti-angiogenic factor. J Biomol Struct Dyn 2022; 40:11729-11743. [PMID: 34424806 DOI: 10.1080/07391102.2021.1965911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Over the years, cancer research has focused on different strategies to discover drugs and therapies to treat the metastatic stage of cancer. This stage depends upon the type, and the cause of cancer. One of the central facts about any cancer invasion is the formation of new blood vessels that provide nutrients to these uncontrollably dividing cells. This phenomenon is called angiogenesis and is responsible for tumor progression and metastasis. Tumor angiogenesis is a sequential process wherein various angiogenic factors produced by tumor cells bind to receptors of endothelial cells. This stimulates the cytoskeletal protein, especially actin to reorganize themselves and undergo the process of canalization. The driving force for such membrane transformation is spatially and temporally-regulated by polymerization of submembrane actin filaments. So far, Colchicine has been studied for its effectiveness in controlling microtubule reorganization during cell division, but its role is far from understood on actin polymerization. In our current study, we report the effect of Colchicine on actin polymerization dynamics using biophysical analysis like Right light scattering (RLS), Dynamic light scattering (DLS), Circular dichroism (CD) analysis, Scanning electron microscopy (SEM) study. Isothermal titration calorimetry (ITC) and kinetic measurements. Isothermal titration calorimetry (ITC) indicates multiple site binding for colchicine with actin aggregates. We have checked the in vivo effect of colchicine using end3 cells of Saccharomyces cerevisiae. We also report the anti-angiogenesis activity of colchicine via ex-ovo chicken chorioallantoic membrane (CAM) assay. We predict the target site of binding for the drug by docking studies. Based on our findings, we suggest the 'drug-repurposed' function for colchicine as a potential anti-angiogenic candidate.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Samridhi Pathak
- School of Chemical Sciences, UM-DAE Center for excellence in basic sciences, University of Mumbai, Mumbai, Maharashtra, India
| | - Rahul Gupta
- School of Chemical Sciences, UM-DAE Center for excellence in basic sciences, University of Mumbai, Mumbai, Maharashtra, India
| | - Haifa Parkar
- School of Chemical Sciences, UM-DAE Center for excellence in basic sciences, University of Mumbai, Mumbai, Maharashtra, India
| | - Neha Joshi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Shirisha Nagotu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Avinash Kale
- School of Chemical Sciences, UM-DAE Center for excellence in basic sciences, University of Mumbai, Mumbai, Maharashtra, India
| |
Collapse
|
4
|
Yeggoni DP, Dubey S, Mohammad YZ, Rachamallu A, Subramanyam R. Elucidation of binding mechanism of stigmasterol with human serum albumin: a biophysical and molecular dynamics simulation approach. J Biomol Struct Dyn 2022; 40:12135-12147. [PMID: 34463217 DOI: 10.1080/07391102.2021.1968498] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the present study, we have analyzed the interaction of a phytochemical, stigmasterol (Stig), with human serum albumin (HSA) under physiological conditions using fluorescence quenching, circular dichroism and molecular modeling methods. Cytotoxic studies with Stig in mouse macrophages (RAW 246.7) and HeLa cell lines showed anti-inflammatory and anti-cancer properties. Further, the intrinsic fluorescence of HSA was quenched by Stig, which was considered a static quenching mechanism. The site-specific marker experiments revealed that Stig binds to the IIIA subdomain of HSA with a binding constant of KStig=1.8 ± 0.03 × 105 M-1 and free energy of -7.26 ± 0.031 Kcal/mol. The secondary structure of HSA was partially unfolded after binding of Stig, which indicates an alteration in the microenvironment of the protein binding site. Molecular docking experiments found that Stig binds strongly with HSA at the IIIA domain of the hydrophobic pocket with one hydrogen bond. The rigidity of the protein-Stig complex and free energies were analyzed by molecular dynamic simulation (MDS) for 100 ns, where the HSA-Stig was stabilized after 40 ns. MDS studies revealed that HSA does not significantly change the secondary structure when it binds with Stig, which is in agreement with the circular dichroism data. Overall, the results obtained gave qualitative and quantitative insight into the binding interaction between HSA and Stig, which is essential in understanding the latter as a therapeutic molecule.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
| | - Shreya Dubey
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Yusuf Zamal Mohammad
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | | | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| |
Collapse
|
5
|
Bharathi, Roy KK. Structural basis for the binding of a selective inverse agonist AF64394 with the human G-protein coupled receptor 3 (GPR3). J Biomol Struct Dyn 2022; 40:10181-10190. [PMID: 34157950 DOI: 10.1080/07391102.2021.1940282] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The orphan class A G-protein coupled receptor 3 (GPR3) is highly expressed in brain and linked with various neuronal functions, and therefore, expected to play a vital role in the progression of Alzheimer's disease. In view of the lack of its experimental structure, we describe herein the three-dimensional structure and conformational dynamics of GPR3 complexed with the inverse agonist AF64394. The GPR3 model was predicted using the Iterative Threading ASSEmbly Refinement (I-TASSER) method. The Induced Fit Docking predicted two unique poses, Pose 1 and Pose 2, for AF64394, and then, molecular dynamics (MD) simulations followed by binding free-energy calculation revealed the Pose 1 as a very stable pose with the least fluctuation during the MD simulation while the Pose 2 underwent a significant fluctuation. The [1,2,4]triazolo[1,5-a]pyrimidine core was engaged in multiple hydrogen bonds (H-bonds), such as a water-mediated H-bond between the triazole nitrogen and T31, two direct H-bonds between the protonated triazole-ring nitrogen and V186 and T279, a direct H-bond between the secondary amine and V187. The phenyl substituent of AF64394 exhibited aromatic π-π stacking interactions with F97, F101, W43 and Y280. AF64394 showed a direct interaction with E28 and polar interactions with H96, T31 and T279. Throughout the MD simulation, the toggle switch residues, F120 and W260, remained in close contact, indicating that the GPR3 conformation represented an inactive state. The 4-(3-chloro-5-isopropoxyphenethyl) group resided near to the toggle switch residues. The insights gained here are expected to be useful in the structure-based design of new ligands targeting GPR3 modulation. Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Bharathi
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, Kolkata, India
| | - Kuldeep K Roy
- Department of Pharmaceutical Technology, School of Medical Sciences, Adamas University, Kolkata, India
| |
Collapse
|
6
|
Bagheri F, Fatemi MH. Investigation of the Interaction between Nilotinib and Alpha-Lactalbumin by Spectroscopic Methods and Docking Studies. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1068162022040057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Toprak G, Hanoglu L, Cakir T, Guntekin B, Velioglu HA, Yulug B. DLPF Targeted Repetitive Transcranial Magnetic Stimulation Improves Brain Glucose Metabolism Along with the Clinical and Electrophysiological Parameters in CBD Patients. Endocr Metab Immune Disord Drug Targets 2022; 22:415-424. [PMID: 35100961 DOI: 10.2174/1871530322666220131120349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/24/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Corticobasal Degeneration (CBD) is a rare neurological disease caused by the pathological accumulation of tau protein. The primary pathological features of CBD include progressive neurodegenerative processes resulting in remarkable frontoparietal and basal ganglia atrophy. OBJECTIVE Like in many other neurodegenerative disorders, there is still no effective disease-modifying drug therapy in CBD. Therefore, the development of new treatment methods is of great importance. In this study, we aimed to assess the stimulating effects of high-frequency DLPFC rTMS on the motor, cognitive and behavioral disturbances in four CBD patients. METHODS Four (three females, one male) CBD patients who had been diagnosed as CBD were enrolled in this study. Patients were evaluated before and after the rTMS procedure regarding the motor, neuropsychometric and behavioral tests. The results of statistical analysis of behavioral and neuropsychometric evaluation were assessed via SPSS 18.0 package program. Data are expressed as mean, standard deviation. Before and after values of the groups were compared with the Wilcoxon sign rank test, and p<0.05 was considered significant. RESULTS We have provided strong preliminary evidence that the improvement in clinical parameters was associated with the normalizations of the theta activity and glucose metabolism. CONCLUSION Our current results are consistent with some previous trials showing a strong association between DLPFC targeted rTMS and electrophysiological normalizations in the left DLPFC.
Collapse
Affiliation(s)
- Guven Toprak
- Department of Clinical Electrophysiology, Neuroimaging and Neuromodulation, Istanbul Medipol University, Istanbul, Turkey
| | - Lutfu Hanoglu
- Department of Neurology, Istanbul Medipol University School of Medicine, Istanbul, Turkey
| | - Tansel Cakir
- Department of Nuclear Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Bahar Guntekin
- Department of Clinical Electrophysiology, Neuroimaging and Neuromodulation, Istanbul Medipol University, Istanbul, Turkey
| | - Halil Aziz Velioglu
- Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.,Health Sciences and Technology Research Institute (SABITA), Regenerative and Restorative Medicine Research Center (REMER), Functional Imaging and Cognitive-Affective Neuroscience Lab (fINCAN), Istanbul Medipol University, Istanbul, Turkey
| | - Burak Yulug
- Department of Neurology, Alanya Alaaddin Keykubat University School of Medicine, Alanya/Antalya, Turkey
| |
Collapse
|
8
|
Zhao L, Tong Q, Liu Y, Geng Z, Yin L, Xu W, Rehman A. Fabrication and characterization of octenyl succinic anhydride modified pullulan micelles for encapsulating curcumin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2874-2884. [PMID: 34755344 DOI: 10.1002/jsfa.11628] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Curcumin has become increasingly popular in functional foods and beverages field as a result of its high biological activity. Nevertheless, the application of curcumin is usually limited by its poor water solubility, low absorption, rapid metabolism and instability. Accordingly, the development of an appropriate wall material is crucial for its effective use. In the present study, curcumin-octenyl succinic anhydride modified pullulan (Cur-OSAP) micelles were successfully prepared by an anti-solvent co-precipitation method. RESULTS Octenyl succinic anhydride modified pullulan (OSAP) micelles exhibited the highest encapsulation efficiency (57.31%) and loading capacity (5.73%) of curcumin when the mass ratio of OSAP to curcumin was 10:1 and the degree of substitution of OSAP was 0.0469, at which point Cur-OSAP micelles formed via hydrogen binding and hydrophobic interactions, as confirmed by Fourier transform infrared and fluorescence techniques. The transmission electron microscopy results showed that the Cur-OSAP micelles were roughly spherical in shape with diameters in the approximate range 30-60 nm. CONCLUSION The encapsulation of OSAP greatly improved photostability and sustained release properties of curcumin in Cur-OSAP micelles. These findings suggest that OSAP can be used as a carrier to encapsulate and protect hydrophobic food ingredients. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Li Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Qunyi Tong
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yutong Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Ziwei Geng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Lichen Yin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wentian Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Abdur Rehman
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| |
Collapse
|
9
|
Zhang J, Wang T, Shao W, Huang S, Ma H. Association mechanism of remimazolam-serum albumin nano-drug for potential clinical application. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
10
|
Mohammad Hood MH, Tengku Abdul Hamid TH, Abdul Wahab RA, Huyop FZ, Kaya Y, Abdul Hamid AAA. Molecular interactions of trichoderma β-1,4-glucosidase (ThBglT12) with mycelial cell wall components of phytopathogenic Macrophomina phaseolina. J Biomol Struct Dyn 2022; 41:2831-2847. [PMID: 35174777 DOI: 10.1080/07391102.2022.2039772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Efficacy of a β-1,4-glucosidase from Trichoderma harzianum T12 (ThBglT12) in disrupting the cell wall of the phytopathogenic fungus M. phaseolina (Macrophomina phaseolina) was studied, as the underlying molecular mechanisms of cell wall recognition remains elusive. In this study, the binding location identified by a consensus of residues predicted by COACH tool, blind docking, and multiple sequence alignment revealed that molecular recognition by ThBglT12 occurred through interactions between the α-1,3-glucan, β-1,3-glucan, β-1,3/1,4-glucan, and chitin components of M. phaseolina, with corresponding binding energies of -7.4, -7.6, -7.5 and -7.8 kcal/mol. The residue consensus verified the participation of Glu172, Tyr304, Trp345, Glu373, Glu430, and Trp431 in the active site pocket of ThBglT12 to bind the ligands, of which Trp345 was the common interacting residue. Root mean square deviation (RMSD), root mean square fluctuation (RMSF), total energy, and minimum distance calculation from molecular dynamics (MD) simulation further confirmed the stability and the closeness of the binding ligands into the ThBglT12 active site pocket. The h-bond occupancy by Glu373 and Trp431 instated the role of the nucleophile for substrate recognition and specificity, crucial for cleaving the β-1,4 linkage. Further investigation showed that the proximity of Glu373 to the anomeric carbon of β-1,3/1,4-glucan (3.5 Å) and chitin (5.5 Å) indicates the nucleophiles' readiness to form enzyme-substrate intermediates. Plus, the neighboring water molecule appeared to be correctly positioned and oriented towards the anomeric carbon to hydrolyze the β-1,3/1,4-glucan and chitin, in less than 4.0 Å. In a nutshell, the study verified that the ThBglT12 is a good alternative fungicide to inhibit the growth of M. phaseolina.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Mohammad Hakim Mohammad Hood
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan, Pahang, Malaysia
| | - Tengku Haziyamin Tengku Abdul Hamid
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan, Pahang, Malaysia.,Research Unit for Bioinformatics and Computational Biology (RUBIC), Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan, Pahang, Malaysia
| | - Roswanira Abdul Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, Malaysia
| | - Fahrul Zaman Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Yilmaz Kaya
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Turkey
| | - Azzmer Azzar Abdul Abdul Hamid
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan, Pahang, Malaysia.,Research Unit for Bioinformatics and Computational Biology (RUBIC), Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan, Pahang, Malaysia
| |
Collapse
|
11
|
Anticancer and antimicrobial evaluation of novel conductive ZnO2 doped polymer patches for cancer treatment and tissue engineering applications. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-04001-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
12
|
Wani TA, Alsaif NA, Alanazi MM, Bakheit AH, Khan AA, Zargar S. Binding of colchicine and ascorbic acid (vitamin C) to bovine serum albumin: An in-vitro interaction study using multispectroscopic, molecular docking and molecular dynamics simulation study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117542] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
13
|
Almeida TC, Seibert JB, Amparo TR, de Souza GHB, da Silva GN, Dos Santos DH. Modulation of Long Non-Coding RNAs by Different Classes of Secondary Metabolites from Plants: A Mini-Review on Antitumor Effects. Mini Rev Med Chem 2021; 22:1232-1255. [PMID: 34720079 DOI: 10.2174/1389557521666211101161548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/07/2021] [Accepted: 09/10/2021] [Indexed: 11/22/2022]
Abstract
The broad pharmacological spectrum of plants is related to their secondary metabolism, which is responsible for the synthesis of different compounds that have multiple effects on cellular physiology. Among the biological effects presented by phytochemicals, their use for the prevention and treatment of cancer can be highlighted. This occurs due to several mechanisms of antitumor action demonstrated by these compounds, including regulation of the cell signaling pathways and inhibition of tumor growth. In this way, long non-coding RNAs (lncRNAs) appear to be promising targets for the treatment of cancer. Their deregulation has already been related to a variety of clinical-pathological parameters. However, the effects of secondary metabolites on lncRNAs are still restricted. For this reason, the present review aimed to gather data on phytochemicals with action on lncRNAs in order to confirm their possible antitumor potential. According to the literature, terpenoid and flavonoid are the main examples of secondary metabolites involved with lncRNAs activity. In addition, the lncRNAs H19, CASC2, HOTAIR, NKILA, CCAT1, MALAT1, AFAP1-AS1, MEG3, and CDKN2B-AS1 can be highlighted as important targets in the search for new anti-tumor agents since they act as modulating pathways related to cell proliferation, cell cycle, apoptosis, cell migration and invasion. Finally, challenges for the use of natural products as a commercial drug were also discussed. The low yield, selectivity index and undesirable pharmacokinetic parameters were emphasized as a difficulty for obtaining these compounds on a large scale and for improving the potency of its biological effect. However, the synthesis and/or development of formulations were suggested as a possible approach to solve these problems. All of these data together confirm the potential of secondary metabolites as a source of new anti-tumor agents acting on lncRNAs.
Collapse
Affiliation(s)
- Tamires Cunha Almeida
- Department of Pharmacy, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto. Brazil
| | | | - Tatiane Roquete Amparo
- Department of Pharmacy, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto. Brazil
| | | | - Glenda Nicioli da Silva
- Department of Clinical Analysis, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto. Brazil
| | | |
Collapse
|
14
|
Yosrey E, Elmansi H, Sheribah ZA, El-Sayed Metwally M. Factorial design-assisted spectroscopic determination of oxybutynin hydrochloride. ROYAL SOCIETY OPEN SCIENCE 2021; 8:211027. [PMID: 34849244 PMCID: PMC8611342 DOI: 10.1098/rsos.211027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
In this study, we have developed two facile spectroscopic methods for quantifying oxybutynin (OBT) hydrochloride in its pure form and tablets using design of experiments (DOEs). The spectroscopic methods depended on the ion-pair complex formation between the tertiary amino group in the drug and eosin in 0.2 M acetate buffer of pH 4. Method I involves spectrophotometric measurement of the absorbance of the developed complex at 550 nm and showed linearity through 1.0-10.0 µg ml-1. Method II involves spectrofluorometric measurement of the quenching influence of OBT on the native fluorescence of eosin (λ excitation/λ emission of 304/548 nm) and showed linearity through 1.0-6.0 µg ml-1. Critical parameters were identified through preliminary trials and optimized using the DOE. Additionally, the quenching mechanism was investigated and the pathway of the reaction was postulated. The fluorescence quenching constant and thermodynamic parameters were explored using the Stern-Volmer plot and Van't Hoff graph, respectively. Assessments conducted via analytical ecoscale revealed the 'excellent-greenness' of the methodology. The two methods have the potentials of being green and fast compared with other reported methods.
Collapse
Affiliation(s)
- Eman Yosrey
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Heba Elmansi
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Zeinab A. Sheribah
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Mohamed El-Sayed Metwally
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| |
Collapse
|
15
|
Mechanistic insights into the inhibition of pancreatic lipase by apigenin: Inhibitory interaction, conformational change and molecular docking studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116505] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
16
|
Divakara MB, Ashwini R, Santosh MS, Priyanka M, Ravikumar CR, Viswanatha R, Murthy HCA. Early-stage culprit in protein misfolding diseases investigated using electrochemical parameters: New insights over peptide-membrane interactions. Biomed Pharmacother 2021; 142:111964. [PMID: 34329823 DOI: 10.1016/j.biopha.2021.111964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
The dysfunctioning of β-cells caused by the unspecific misfolding of the human islet amyloid polypeptide (hIAPP) at the membrane results in type 2 diabetes mellitus. Here, we report for the first time, the early-stage interaction of hIAPP oligomers on the DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine) lipid membrane using electrochemical parameters. Electrochemical techniques are better than other techniques to detect hIAPP at significantly lower concentrations. The surface level interactions between the peptide (hIAPP) and lipid membrane (DMPC) were investigated using atomic force microscopy (AFM), confocal microscopy (CM) and electrochemical techniques such as Tafel polarization, cyclic voltammetry (CV), differential pulse voltammetry (DPV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). Inserting IAPP into the fluid domains results in breaking the lipid-to-lipid interaction, leading to restriction of membrane mobility. The SLateral values of the liposome and IAPP co-solubilized liposome indicates the cooperative insertion of IAPP. Further, a new method of immobilizing a membrane to the gold surface has been employed, resulting in an electrical contact with the buffer, preventing the direct utilization of a steady-state voltage across the bilayer. The electrochemical studies revealed that the charge transfer resistance decreased for 3-mercaptopropanoic acid modified gold (MPA-Au) electrode coated with the liposome and after the addition of IAPP, followed by an increase in the capacitance. The present study has opened up new dimensions to the understanding of peptide-membrane interactions and shows different experimental approaches for the future researchers in this domain.
Collapse
Affiliation(s)
- M B Divakara
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - R Ashwini
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - M S Santosh
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India.
| | - M Priyanka
- East Point college of Medical Sciences and Research Centre (affiliated to RGUHS), Jnana Prabha, Virgonagar Post, Bidrahalli, Bengaluru 560049, Karnataka, India
| | - C R Ravikumar
- Research Centre, Department of Science, East West Institute of Technology, Bengaluru 560091, India
| | - R Viswanatha
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - H C Ananda Murthy
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P O Box 1888, Adama, Ethiopia.
| |
Collapse
|
17
|
Insights on the interaction mechanism of exemestane to three digestive enzymes by multi-spectroscopy and molecular docking. Int J Biol Macromol 2021; 187:54-65. [PMID: 34274402 DOI: 10.1016/j.ijbiomac.2021.07.079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 01/27/2023]
Abstract
Exemestane is an irreversible steroidal aromatase inhibitor, typically used to treat breast cancer. As an anti-tumor drug, exemestane has more obvious side effects on the gastrointestinal tract. The purpose of this work is to investigate the combination of exemestane with three important digestive enzymes including pepsin (Pep), trypsin (Try) and α-Chymotrypsin (α-ChT) so as to analyze the mechanism of the gastrointestinal adverse effects causing by exemestane binding. Enzyme activity experiment showed that the enzyme activity of Pep was decreased in the presence of exemestane. Fluorescence spectra revealed that exemestane formed stable complexes with digestive enzymes, and the quenching mechanism of drug-digestive enzymes interaction were all static quenching. The binding constants of Pep, Try and α-ChT at 298 K were 2.34 × 105, 1.45 × 105, and 2.05 × 105 M-1, respectively. Synchronous fluorescence and 3D fluorescence spectroscopy showed that the conformation of exemestane was slightly changed after combining with digestive enzymes, and non-radiative energy transfer occurred. Circular dichroism results indicated that exemestane could change the secondary structure of digestive enzymes via increase the α-helix content and decrease in the β-sheet content. Thermodynamic parameters (ΔH0, ΔS0, and ΔG0) revealed that exemestane interacted with α-ChT through electrostatic force, and the binding force with Pep and Try was van der Waals interactions and hydrogen, which was basically consistent with the molecular docking results.
Collapse
|
18
|
Bagheri F, Fatemi MH. Investigation of the Interaction of Sorafenib with Alpha-Lactalbumin: Spectroscopic and Molecular Modeling. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021040038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
19
|
Wani TA, Bakheit AH, Al-Majed AA, Altwaijry N, Baquaysh A, Aljuraisy A, Zargar S. Binding and drug displacement study of colchicine and bovine serum albumin in presence of azithromycin using multispectroscopic techniques and molecular dynamic simulation. J Mol Liq 2021; 333:115934. [PMID: 33753950 PMCID: PMC7969832 DOI: 10.1016/j.molliq.2021.115934] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/11/2021] [Accepted: 03/14/2021] [Indexed: 12/22/2022]
Abstract
The binding and displacement interaction of colchicine and azithromycin to the model transport protein bovine serum albumin (BSA) was evaluated in this study. Azithromycin, a macrolide antibiotic, has antiviral properties and hence, has been used concomitantly with hydroxychloroquine against SARS-CoV-2. Colchicine, a natural plant product is used to treat and prevent acute gout flares. Some macrolide antibiotics are reported to have fatal drug-drug interactions with colchicine. The displacement interaction between colchicine and azithromycin on binding to BSA was evaluated using spectroscopic techniques, molecular docking and molecular dynamic simulation studies. The binding constant recorded for the binary system BSA-colchicine was 7.44 × 104 whereas, the binding constant for the ternary system BSA-colchicine in presence of azithromycin was 7.38 × 104 and were similar. Azithromycin didn't bind to BSA neither did it interfere in binding of colchicine. The results from molecular docking studies also led to a similar conclusion that azithromycin didn't interfere in the binding of colchicine to BSA. These findings are important since there is possibility of serious adverse event with co-administration of colchicine and azithromycin in patients with underlying gouty arthritis and these patients need to be continuously monitored for colchicine toxicity.
Collapse
Affiliation(s)
- Tanveer A Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ahmed H Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdulrahman A Al-Majed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Nojood Altwaijry
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh 11451, Saudi Arabia
| | - Anwar Baquaysh
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh 11451, Saudi Arabia
| | - Ashwaq Aljuraisy
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh 11451, Saudi Arabia
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh 11451, Saudi Arabia
| |
Collapse
|
20
|
Tomioka H, Tatano Y, Shimizu T, Sano C. Immunoadjunctive Therapy against Bacterial Infections Using Herbal Medicines Based on Th17 Cell-mediated Protective Immunity. Curr Pharm Des 2021; 27:3949-3962. [PMID: 34102961 DOI: 10.2174/1381612827666210608143449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 04/27/2021] [Indexed: 11/22/2022]
Abstract
One of the major health concerns in the world is the global increase in intractable bacterial infectious diseases due to the emergence of multi- and extensively drug-resistant bacterial pathogens as well as an increase in compromised hosts around the world. Particularly, in the case of mycobacteriosis, the high incidence of tuberculosis in developing countries, resurgence of tuberculosis in industrialized countries, and increase in the prevalence of Mycobacterium avium complex infections are important worldwide health concerns. However, the development of novel antimycobacterial drugs is currently making slow progress. Therefore, it is considered that devising improved administration protocols for clinical treatment against refractory mycobacteriosis using existing chemotherapeutics is more practical than awaiting the development of new antimycobacterial drugs. The regulation of host immune responses using immunoadjunctive agents may increase the efficacy of antimicrobial treatment against mycobacteriosis. The same situations also exist in cases of intractable infectious diseases due to common bacteria other than mycobacteria. The mild and long-term up-regulation of host immune reactions in hosts with intractable chronic bacterial infections, using herbal medicines and medicinal plants, may be beneficial for such immunoadjunctive therapy. This review describes the current status regarding basic and clinical studies on therapeutic regimens using herbal medicines, useful for the clinical treatment of patients with intractable bacterial infections. In particular, we focus on immunoadjunctive effects of herbal medicines on the establishment and manifestation of host antibacterial immunity related to the immunological roles of Th17 cell lineages.
Collapse
Affiliation(s)
- Haruaki Tomioka
- Department of Basic Medical Science for Nursing, Department of Contemporary Psychology, Yasuda Women's University, Hiroshima, Japan
| | - Yutaka Tatano
- Department of Pharmaceutical Sciences, International University of Health and Welfare, Fukuoka, Japan
| | - Toshiaki Shimizu
- Department of Nutrition Administration, Yasuda Women's University, Hiroshima,, Japan
| | - Chiaki Sano
- Department of Community Medicine Management, Shimane University School of Medicine, Izumo, Japan
| |
Collapse
|
21
|
Khan I, Mahfooz S, Ansari IA. Antiproliferative and Apoptotic Properties of Andrographolide Against Human Colon Cancer DLD1 Cell Line. Endocr Metab Immune Disord Drug Targets 2021; 20:930-942. [PMID: 31774047 DOI: 10.2174/1871530319666191125111920] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND In recent years, natural products have received great attention for cancer prevention owing to their various health benefits, noticeable lack of toxicity and side effects, and the limitations of chemotherapeutic agents. Andrographolide, a labdane diterpenoid is a principal bioactive constituent of Andrographis paniculata Nees, exhibits significant anticancer activity. OBJECTIVE The efficacy of andrographolide on colon cancer cells is yet to be elucidated completely. Therefore, we investigated the anticancer efficiency of andrographolide in colon cancer DLD1 cell line. METHODS Antiproliferative activity of andrographolide on DLD1 cells was evaluated by MTT assay, LDH release assay, morphological analysis and colony formation assay. Induction of apoptosis was determined by DAPI staining, Annexin V-FITC staining assay, and caspase-3 activation assay. Role of andrographolide induced cellular reactive oxygen species (ROS) and its association with apoptosis induction in DLD1 cells was elucidated by DCFDA dye. Synergistic ability of andrographolide with 5- fluorouracil (5-FU) and paclitaxel (PTX) was evaluated by MTT assay. RESULTS Results of the present study indicated that andrographolide declined cell viability of DLD1 cells in a concentration and time-dependent manner. Andrographolide induced apoptosis via nuclear condensation, phosphatidylserine externalization and caspase-3 activation. It also augmented cellular ROS levels which were in turn associated with apoptosis induction in DLD1 cells. Moreover, andrographolide displayed synergistic activity with 5-FU and PTX against DLD1 cells. CONCLUSION The present study showed that andrographolide demonstrated antiproliferative and apoptotic properties, moreover it also displayed synergistic effect with chemotherapeutic drugs in colon cancer DLD1 cells.
Collapse
Affiliation(s)
- Imran Khan
- Department of Molecular Biology, Beykoz Institute of Life Sciences and Biotechnology, Bezmialem Vakif University,
Yalıköy Mahallesi, Beykoz, Istanbul, Turkey,Department of Biosciences, Integral University, Dasauli, Kursi Road, Lucknow, 226026, India
| | - Sadaf Mahfooz
- Department of Molecular Biology, Beykoz Institute of Life Sciences and Biotechnology, Bezmialem Vakif University,
Yalıköy Mahallesi, Beykoz, Istanbul, Turkey,Department of Biosciences, Integral University, Dasauli, Kursi Road, Lucknow, 226026, India
| | - Irfan A Ansari
- Department of Biosciences, Integral University, Dasauli, Kursi Road, Lucknow, 226026, India
| |
Collapse
|
22
|
Diao M, Liang Y, Zhao J, Zhao C, Zhang J, Zhang T. Enhanced cytotoxicity and antioxidant capacity of kaempferol complexed with α-lactalbumin. Food Chem Toxicol 2021; 153:112265. [PMID: 34004225 DOI: 10.1016/j.fct.2021.112265] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/05/2021] [Accepted: 05/11/2021] [Indexed: 01/25/2023]
Abstract
As a dietary polyphenol, kaempferol exhibits numerous biological activities such as antioxidant and anticancer properties. However, its application is limited because of its poor solubility and low permeability. This work aims to investigate the interaction of kaempferol with α-lactalbumin. Multiple-spectroscopic techniques were used to prove the interaction between kaempferol and α-lactalbumin. UV-vis absorption spectra suggested that the conformation of α-lactalbumin could be changed via binding with kaempferol. The fluorescence quenching test showed that kaempferol significantly quenched the intrinsic fluorescence of α-lactalbumin. Circular dichroism spectroscopy showed that the percent helicity of α-lactalbumin secondary structure increased when combined with kaempferol. In addition, the α-lactalbumin-kaempferol complex showed stronger inhibition ability on the growth of HeLa cells compared with kaempferol alone. The complex also showed higher antioxidant capacity than kaempferol alone. Molecular docking provided three predicted binding sites of α-lactalbumin for kaempferol, as well as five predicted binding poses of kaempferol. The weak intermolecular interactions were the main forces to stabilize the α-lactalbumin-kaempferol complex. Besides, the binding stability between α-lactalbumin and kaempferol was explored by molecular dynamics simulation. In conclusion, this work provides a basis for the potential application of α-lactalbumin as a delivery carrier for kaempferol owing to its nontoxic and biocompatible properties.
Collapse
Affiliation(s)
- Mengxue Diao
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yuan Liang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Jingqi Zhao
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Changhui Zhao
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
| | - Tiehua Zhang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
| |
Collapse
|
23
|
Thirunavukkarasu MK, Shin WH, Karuppasamy R. Exploring safe and potent bioactives for the treatment of non-small cell lung cancer. 3 Biotech 2021; 11:241. [PMID: 33968584 DOI: 10.1007/s13205-021-02797-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/15/2021] [Indexed: 11/28/2022] Open
Abstract
Activating and suppressing mutations in the MAPK pathway receptors are the primary causes of NSCLC. Of note, MEK inhibition is considered a promising strategy because of the diverse structures and harmful effects of upstream receptors in MAPK pathway. Thus, we explore a total of 1574 plant-based bioactive compounds activity against MEK using an energy-based virtual screening strategy. Molecular docking, binding free energy, and drug-likeness analysis were performed through GLIDE, Prime MM-GBSA, and QikProp module, respectively. The findings indicate that 5-O-caffeoylshikimic acid has an increased binding affinity to MEK protein. Further, molecular dynamic simulations and MM-PBSA analysis were performed to explore the ligand activity in real-life situations. In essence, compounds inhibitory activity was validated across 77 lung cancer cell lines using multimodal attention-based neural network algorithm. Eventually, our analysis highlight that 5-O-caffeoylshikimic acid obtained from the bark of Rhizoma smilacis glabrae would be developed as a potential compound for treating NSCLC.
Collapse
Affiliation(s)
- Muthu Kumar Thirunavukkarasu
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Tamil Nadu, Vellore, 632014 India
| | - Woong-Hee Shin
- Department of Chemical Science Education, College of Education, Sunchon National University, Suncheon, Republic of Korea
| | - Ramanathan Karuppasamy
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Tamil Nadu, Vellore, 632014 India
| |
Collapse
|
24
|
Albalawi IA, Mir R, Abu-Duhier FM. Molecular Evaluation of PROGINS Mutation in Progesterone Receptor Gene and Determination of its Frequency, Distribution Pattern and Association with Breast Cancer Susceptibility in Saudi Arabia. Endocr Metab Immune Disord Drug Targets 2021; 20:760-770. [PMID: 31763970 DOI: 10.2174/1871530319666191125153050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 10/18/2019] [Accepted: 10/19/2019] [Indexed: 12/15/2022]
Abstract
AIMS Experimental and clinical evidence demonstrate that progesterone hormone and its nuclear receptor, the Progesterone Receptor (PR), play critical role in controlling mammary gland tumorigenesis and breast cancer development. Hormonal therapy (Tomaxifen) is the frontline treatment for hormone-dependent breast cancers. Progesterone hormone induces its action on the target cells by binding with its Progesterone receptor (PgR) therefore any genetic variations, which might induce alienation in the progesterone receptor, can result in an increased susceptibility of gynecological cancers. Alu insertion (PROGINS) mutation in PgR gene is reported to be associated with an increased risk of ovarian cancer and a decreased risk of breast cancer. However, its association with breast cancer risk remains inconclusive. Therefore, we investigated the association of PROGINS allele and its link with breast cancer risk. METHODS This case control study was performed on 200 subjects in which 100 were breast cancer cases and 100 gender matched healthy controls.The mutation was detected by using mutation specific PCR and results were confirmed by direct Sanger sequencing. RESULTS A clinically significant difference was reported in genotype distribution of PROGINs allele among the cases and gender-matched healthy controls (P<0. 032). Genotype frequencies of A1/A1, A1/A2, A2/A2 reported in cases was 81%, 19% (18% & 1%) and in matched healthy controls were 93%, 7% (6% & 1%). The higher frequency of PROGINs allele (19%) was observed in cases than the healthy controls (7%). The findings indicated that PgR variants (CC vs CT) increased the risk of Breast cancer in codominant inheritance model with OR= 3.44, 95% CI =1. 30-9.09, P<0.021) whereas nonsignificant association was found for CC vs TT genotypes with OR=1.14, 95% CI=0.07-18.658, P=0. 92. However, subgroup analysis revealed that CT + TT vs CC genotype increased the risk of breast cancer in dominant inheritance model tested OR = 3. 11, 95% CI = (1.24-7.79), P = 0.015). A nonsignificant association for PgR (CC+CT) vs TT) genotypes were reported in breast cancer OR = 1. 0, 95% CI= (0. 061-16.21), P=1) in recessive inheritance model tested. However, analysis with clinicalpathological variables revealed that the PROGINs allele is significantly associated with the distant metastasis and advanced stage of the disease. CONCLUSION The mutation specific PCR was successfully developed as an alternative to Sanger sequencing for the cost-effective detection for PROGINS allele of progesterone receptor gene. A clinically significant correlation of PROGINs allele was reported with the distant metastasis and advanced stage of the disease. Taken together, these results demonstrated that PROGINS variant is associated with an increased susceptibility to Breast cancer, providing novel insights into the genetic etiology and underlying biology of Breast carcinogenesis. Further studies with large sample sizes are required to validate our findings.
Collapse
Affiliation(s)
- Ibrahim A Albalawi
- Department of Surgical Oncology, Faculty of Medicine, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Rashid Mir
- Department of Medical Laboratory Technology, Prince Fahd Bin Sultan Research Chair, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Fasel M Abu-Duhier
- Department of Medical Laboratory Technology, Prince Fahd Bin Sultan Research Chair, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia
| |
Collapse
|
25
|
Xie F, Zhang W, Gong S, Wang Z. Inhibitory effect of lignin from Canna edulis Ker residues on trypsin: kinetics and molecular docking studies. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2090-2099. [PMID: 32978811 DOI: 10.1002/jsfa.10831] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/19/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Lignin extracted from Canna edulis Ker residues shows a strong inhibitory effect on α-glucosidase and a promoting effect on α-amylase. Protease activity inhibition may play a key role in disease processes, such as metastasis, tumor invasion and bacterial colonization. Hence, in the present study, the inhibitory mechanism of lignin on trypsin was examined, including the interaction type, thermodynamic parameters, structure, reaction site and molecular docking. RESULTS The isolated lignin presented an inhibitory effect on trypsin activity with an IC50 value of 1.35 μmol L-1 . This inhibition was a mixed linear type with a constant Ki of 3.92 μmol L-1 . The lignin could bind with the key amino acid residue Ser195 on the active site of the trypsin molecule to inhibit its activity, and the phenolic hydroxyl group and -OH on the β-O-4 structure of the lignin molecule were the major groups bound with trypsin. CONCLUSION These results illustrate the inhibitory effects of Canna edulis residue lignin on protease, which helps with respect to understanding the possible application of lignin in the food industry in functional foods. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Fan Xie
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Wei Zhang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shengxiang Gong
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhengwu Wang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
26
|
Dixit S, Zia MK, Siddiqui T, Ahsan H, Khan FH. Interaction of organophosphate pesticide chlorpyrifos with alpha-2-macroglobulin: Biophysical and molecular docking approach. J Immunoassay Immunochem 2021; 42:138-153. [PMID: 33086912 DOI: 10.1080/15321819.2020.1837161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Organophosphate class of pesticides causes neurotoxicity and carcinogenicity in humans. Once inside the human body, these pesticides often interact with plasma proteins, such as alpha-2-macroglobulin (α2M) which is the key anti-proteinase. Our work focuses on the structural and functional alteration of α2M by chlorpyrifos (CPF), a member of organophosphates. We explored the binding interaction between alpha-2-macroglobulin and CPF by using UV absorption and fluorescence spectroscopy (steady state and synchronous), circular dichroism and molecular docking approach. The functional activity of α2M was analyzed by anti-proteinase trypsin inhibitory assay which showed dose-dependent decrease in alpha-2-macroglobulin antiproteolytic potential. UV absorption studies and fluorescence quenching experiments suggested the formation of a complex between α2M and CPF. The CD spectra suggested a reduction in the beta helical (β helix) content of α2M. Analysis of thermodynamic parameters suggested the process is spontaneous and endothermic with the ΔG and ΔH values being -5.501 kJ/mol, 11.49 kJ/mol, respectively. CPF binds with Ile-1390, Pro-1391, Leu-1392, Lys-1393, Val-1396, Lys-1397, Arg-1407, Thr-1408, Glu-1409, Val-1410, Asp-282, Glu-281 of α2M as suggested by molecular docking.
Collapse
Affiliation(s)
- Swati Dixit
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mohammad Khalid Zia
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Tooba Siddiqui
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Haseeb Ahsan
- Faculty of Dentistry, Department of Biochemistry, Jamia Millia Islamia, New Delhi, India
| | - Fahim Halim Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| |
Collapse
|
27
|
Wang FY, Wang P, Zhao DF, Gonzalez FJ, Fan YF, Xia YL, Ge GB, Yang L. Analytical methodologies for sensing catechol- O-methyltransferase activity and their applications. J Pharm Anal 2021; 11:15-27. [PMID: 33717608 PMCID: PMC7930641 DOI: 10.1016/j.jpha.2020.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 03/21/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023] Open
Abstract
Mammalian catechol-O-methyltransferases (COMT) are an important class of conjugative enzymes, which play a key role in the metabolism and inactivation of catechol neurotransmitters, catechol estrogens and a wide range of endobiotics and xenobiotics that bear the catechol group. Currently, COMT inhibitors are used in combination with levodopa for the treatment of Parkinson's disease in clinical practice. The crucial role of COMT in human health has raised great interest in the development of more practical assays for highly selective and sensitive detection of COMT activity in real samples, as well as for rapid screening and characterization of COMT inhibitors as drug candidates. This review summarizes recent advances in analytical methodologies for sensing COMT activity and their applications. Several lists of biochemical assays for measuring COMT activity, including the probe substrates, along with their analytical conditions and kinetic parameters, are presented. Finally, the challenges and future perspectives in the field, such as visualization of COMT activity in vivo and in situ, are highlighted. Collectively, this review article overviews the practical assays for measuring COMT activities in complex biological samples, which will strongly facilitate the investigations on the relevance of COMT to human diseases and promote the discovery of COMT inhibitors via high-throughput screening.
Collapse
Affiliation(s)
- Fang-Yuan Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ping Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Dong-Fang Zhao
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Frank J. Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Yu-Fan Fan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yang-Liu Xia
- School of Life Science and Medicine, Dalian University of Technology, Panjin, 124221, China
| | - Guang-Bo Ge
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ling Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| |
Collapse
|
28
|
Thermodynamic analysis of albumin interaction with monosodium glutamate food additive: Insights from multi-spectroscopic and molecular docking approaches. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128785] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
29
|
Ying Y, Wan H, Zhao X, Yu L, He Y, Jin W. Pharmacokinetic-Pharmacodynamic Modeling of the Antioxidant Activity of Quzhou Fructus Aurantii Decoction in a Rat Model of Hyperlipidemia. Biomed Pharmacother 2020; 131:110646. [PMID: 32942150 DOI: 10.1016/j.biopha.2020.110646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/03/2020] [Accepted: 08/16/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Quzhou Fructus Aurantii (QFA) is an herb that is commonly used to alleviate inflammation in individuals dealing with obesity.To date, however, no systematic pharmacokinetic (PK) or pharmacodynamic (PD) analyses of the clinical efficacy of QFA under hyperlipemia-associated oxidative stress conditions have been conducted. The present study, was therefore designed to construct a PK-PD model for this herb, with the goal of linking QFA PK profiles to key therapeutic outlines to guide the therapeutic use of this herb in clinical settings. METHODS Rats were fed a high-fat diet in order to establish a model of hyperlipidemia, after which they were randomized into a normal control group (NCG), a normal treatment group (NTG), a model control group (MCG), and a model treated group (MTG) (n = 6 each). QAF decoction was used to treat rats in the NTG and MTG groups (25 g/kg), while equivalent volumes of physiological saline were administered to rats in the NCG and MCG groups. Plasma samples were collected from the mandibular vein for animals at appropriate time points and analyzed via high-performance liquid chromatography (HPLC). We evaluated PK properties for three QAF components and compared these dynamics between the NTG and MTG groups, while also measuring levels of lipid peroxidation (LPO) in the plasma of rats in all four treatment groups. We then constructed a PK-PD model based upon plasma neohesperidin, luteolin, and nobiletin concentrations and LPO levels using a three-compartment PK model together with a Sigmoid Emax PD model. This model thereby enabled us to assess the antioxidative impact of neohesperidin, luteolin, and nobiletin on hyperlipidemia in rats. RESULTS When comparing the NTG and MTG groups, we detected significant differences in the following parameters pertaining to neohesperidin, luteolin, and nobiletin:t1/2β, V1, t1/2γ, CL1 (p < 0.01) and AUC0-t, Tmax, Cmax (p < 0.05). Relative to NTG group rats, AUC0-t, TmaxandCmaxvalues significantly higher for MTG group rats (p < 0.01), while t1/2β, V1, and t1/2γ values were significantly lower in MTG group rats (p < 0.01) in MTG rats. QAF decoction also exhibited excellent PD efficacy in MTG rats, with significant reductions in plasma LPO levels relative to NTG rats (p < 0.01) following treatment. This therapeutic efficacy may be attributable to the activity of neohesperidin, luteolin, and nobiletin, as LPO levels and plasma concentrations of these compounds were negatively correlated in treated rats. Based upon Akaike Information Criterion (AIC) values, we determined that neohesperidin, luteolin, and nobiletin PK processes were consistent with a three-compartment model. Together, these findings indicated that three active components in QAF decoction (neohesperidin, luteolin, and nobiletin) may exhibit antioxidant activity in vivo. CONCLUSION Our in vivo data indicated that neohesperidin, luteolin and nobiletin components of QAF decoctions exhibit distinct PK and PD properties. Together, these findings suggest that hyperlipidemia-related oxidative stress can significantly impact QFA decoction PK and PD parameters. Our data additionally offer fundamental insights that can be used to design appropriate dosing regimens for individualized clinical QAF decoction treatment.
Collapse
Affiliation(s)
- Yuqi Ying
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| | - Haoyu Wan
- College of Medical Technology, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| | - Xixi Zhao
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| | - Li Yu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| | - Yu He
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| | - Weifeng Jin
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
| |
Collapse
|
30
|
Ahmad F, Muhmood T, Mahmood A. Deciphering the mechanism of hafnium oxide nanoparticles perturbation in the bio-physiological microenvironment of catalase. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/abbf60] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Nanoparticles (NPs) are extensively being used in state-of-the-art nano-based therapies, modern electronics, and consumer products, so can be released into the environment with enhancement interaction with humans. Hence, the exposures to these multifunctional NPs lead to changes in protein structure and functionality, raising serious health issues. This study thoroughly investigated the interaction and adsorption of catalase (CAT) with HfO2-NPs by circular dichroism (CD), Fourier transform infrared (FTIR), absorption, and fluorescence spectroscopic techniques. The results indicate that HfO2 NPs cause fluorescence quenching in CAT by a static quenching mechanism. The negative values of Vant Hoff thermodynamic expressions (ΔH
o
, ΔS
o
, and ΔG
o
) corroborate the spontaneity and exothermic nature of static quenching driven by van der Waals forces and hydrogen bonding. Also, FTIR, UV-CD, and UV–visible spectroscopy techniques confirmed that HfO2 NPs binding could induce microenvironment perturbations leading to secondary and tertiary conformation changes in CAT. Furthermore, synchronous fluorescence spectroscopy confirmed the significant changes in the microenvironment around tryptophan (Trp) residue caused by HfO2 NPs. The time depending denaturing of CAT biochemistry through HfO2-NPs was investigated by assaying catalase activity elucidates the potential toxic action of HfO2-NPs at the macromolecular level. Briefly, this provides an empathetic knowledge of the nanotoxicity and likely health effects of HfO2 NPs exposure.
Collapse
|
31
|
Huang L, Yang C, Wang Y, Li G, Pan J, Luo H, Wu Z, Tian Y, Chen S, Chen J, Jian Z. Anterior gradient 2 is a novel pro-tumor factor in pancreatic cancer under NF-κB subunit RelA trans-regulation that can be suppressed by eugenic acid. Biomed Pharmacother 2020; 132:110830. [PMID: 33059262 DOI: 10.1016/j.biopha.2020.110830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/18/2020] [Accepted: 09/28/2020] [Indexed: 10/23/2022] Open
Abstract
This study aimed to examine eugenic acid (EA) as an alternative therapeutic approach against pancreatic cancer. The pancreatic cancer xenograft mouse model was employed to determine the impacts of treatment with EA on the growth of tumors. Expressions of NF-κB subunit RelA as well as Anterior gradient 2 (AGR2) were quantified in pancreatic cells treated with EA. Chromatin immunoprecipitation and luciferase report assay were performed to examine the regulation of AGR2 by RelA. The function of AGR2 as a downstream effector EA treatment was further assessed through overexpression of AGR2 in pancreatic cells. EA suppressed the growth of xenograft pancreatic tumor, and promoted the overall survival of animals with xenograft tumors. Furthermore, EA downregulated the expression of AGR2 in pancreatic cancer cells via the RelA binding site. Ectopic AGR2 overexpression attenuated the EA-elicited inhibition on the growth of xenograft pancreatic tumor, and negated the EA-induced enhancement of mouse survival. EA ameliorates pancreatic cancer through suppression of AGR2 expression, and future studies in clinical settings are needed to further assess the anti-cancer efficacy of EA.
Collapse
Affiliation(s)
- Long Huang
- The Second School of Clinical Medicine, Southern Medical University, No.1023 South Shatai Road, Baiyun District, Guangzhou, 510515 Guangdong, China; Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106 Zhongshan Er Road, Guangzhou, 510080 Guangdong, China; Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Can Yang
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Yaodong Wang
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Ge Li
- Department of Hepatobiliary Surgery, Union Hospital, Fujian Medical University, Fuzhou, 350001 Fujian, China
| | - Jingjing Pan
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Huatian Luo
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Zhangwei Wu
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Yifeng Tian
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Shi Chen
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fujian Medical University, NO.134, East Street, Fuzhou, 350001 Fujian, China
| | - Jiangzhi Chen
- Department of Hepatobiliary Surgery, Union Hospital, Fujian Medical University, Fuzhou, 350001 Fujian, China.
| | - Zhixiang Jian
- The Second School of Clinical Medicine, Southern Medical University, No.1023 South Shatai Road, Baiyun District, Guangzhou, 510515 Guangdong, China; Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106 Zhongshan Er Road, Guangzhou, 510080 Guangdong, China.
| |
Collapse
|
32
|
Exquisite binding interaction of 18β-Glycyrrhetinic acid with histone like DNA binding protein of Helicobacter pylori: A computational and experimental study. Int J Biol Macromol 2020; 161:231-246. [DOI: 10.1016/j.ijbiomac.2020.06.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 02/07/2023]
|
33
|
Chaves OA, Calheiro TP, Netto-Ferreira JC, de Oliveira MC, Franceschini SZ, de Salles CMC, Zanatta N, Frizzo CP, Iglesias BA, Bonacorso HG. Biological assays of BF2-naphthyridine compounds: Tyrosinase and acetylcholinesterase activity, CT-DNA and HSA binding property evaluations. Int J Biol Macromol 2020; 160:1114-1129. [DOI: 10.1016/j.ijbiomac.2020.05.162] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 01/30/2023]
|
34
|
Ding F, Peng W, Peng YK, Liu BQ. Elucidating the potential neurotoxicity of chiral phenthoate: Molecular insight from experimental and computational studies. CHEMOSPHERE 2020; 255:127007. [PMID: 32416396 DOI: 10.1016/j.chemosphere.2020.127007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Chiral organophosphorus pollutants are existed ubiquitously in the ecological environment, but the enantioselective toxicities of these nerve agents to humans and their molecular bases have not been fully elucidated. Using experimental and computational approaches, this story was to explore the neurotoxic response process of the target acetylcholinesterase (AChE) to chiral phenthoate and further decipher the microscopic mechanism of such toxicological effect at the enantiomeric level. The results showed that the toxic reaction of AChE with chiral phenthoate exhibited significant enantioselectivity, and (R)-phenthoate (K=1.486 × 105 M-1) has a bioaffinity for the nerve enzyme nearly three times that of (S)-phenthoate (K=4.503 × 104 M-1). Dynamic research outcomes interpreted the wet experiments, and the inherent conformational flexibility of the target enzyme has a great influence on the enantioselective neurotoxicological action processes, especially reflected in the conformational changes of the three key loop regions (i.e. residues His-447, Gly-448, and Tyr-449; residues Gly-122, Phe-123, and Tyr-124; and residues Thr-75, Leu-76, and Tyr-77) around the reaction patch. This was supported by the quantitative results of conformational studies derived from circular dichroism spectroscopy (α-helix: 34.7%→30.2%/31.6%; β-sheet: 23.6%→19.5%/20.7%; turn: 19.2%→22.4%/21.9%; and random coil: 22.5%→27.9%/25.8%). Meanwhile, via analyzing the modes of toxic action and free energies, we can find that (R)-phenthoate has a strong inhibitory effect on the enzymatic activity of AChE, as compared with (S)-phenthoate, and electrostatic energy (-23.79/-17.77 kJ mol-1) played a critical role in toxicological reactions. These points were the underlying causes of chiral phenthoate displaying different degrees of enantioselective neurotoxicity.
Collapse
Affiliation(s)
- Fei Ding
- Department of Environmental Science and Engineering, School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, No. 126 Yanta Road, Yanta District, Xi'an, 710054, China
| | - Wei Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Yu-Kui Peng
- Center for Food Quality Supervision, Inspection & Testing, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, 712100, China
| | - Bing-Qi Liu
- Department of Agricultural Chemistry, Qingdao Agricultural University, Qingdao, 266109, China
| |
Collapse
|
35
|
Mirzaei M, Harismah K, Soleimani M, Mousavi S. Inhibitory effects of curcumin on aldose reductase and cyclooxygenase-2 enzymes. J Biomol Struct Dyn 2020; 39:6424-6430. [DOI: 10.1080/07391102.2020.1800513] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mahmoud Mirzaei
- Biosensor Research Center, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Kun Harismah
- Department of Chemical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
| | - Mehdi Soleimani
- Isfahan Pharmacy Students' Research Committee, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sarah Mousavi
- Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
36
|
Shahba H, Sabet M. Two-Step and Green Synthesis of Highly Fluorescent Carbon Quantum Dots and Carbon Nanofibers from Pine Fruit. J Fluoresc 2020; 30:927-938. [PMID: 32500261 DOI: 10.1007/s10895-020-02562-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 05/25/2020] [Indexed: 01/01/2023]
Abstract
To green synthesis of highly yield photoluminescence carbon nanofibers/carbon quantum dots by pine fruit the ball milling assisted hydrothermal method was served. Different analysis such as XRD, EDS, elemental mapping and FT-IR analysis were used to study the product structure. The optical properties of the synthesized carbon nanomaterials were investigated by UV-Vis and PL analysis. Also, the effects of hydrothermal time and temperature on the PL intensity were studied. To study the product size and morphology SEM and TEM analysis were served. Also, the nucleation and growth mechanism was studied by TEM images. The results showed the product is composed of very tiny nitrogen-doped carbon dots and carbon nanofibers with high photoluminescence intensity. The photocatalytic activity of the product was investigated by degradation of six dyes namely Acid blue, Eosin Y, Erichrome Black T, Methylene blue, Methyl orange and Methyl. The results showed the product has high photocatalytic activity and it can degrade the dyes with creation reactive oxide species in the aqueous solution. The surface activity of the product was also investigated and it was found it can adsorb Pb2+ and Cd2+ from the water with 100% efficiency. The results showed we can synthesis of useful carbon nanomaterials with high photoluminescence intensity, highly photocatalytic activity and surface adsorption via a simple and fast method with the pine fruit. Graphical abstract.
Collapse
Affiliation(s)
- Haniyeh Shahba
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, PO Box: 77176, Rafsanjan, Iran
| | - Mohammad Sabet
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, PO Box: 77176, Rafsanjan, Iran.
| |
Collapse
|
37
|
He LL, Qi Q, Wang X, Li Y, Zhu Y, Wang XF, Xu L. Synthesis of two novel pyrazolo[1,5-a]pyrimidine compounds with antibacterial activity and biophysical insights into their interactions with plasma protein. Bioorg Chem 2020; 99:103833. [PMID: 32305694 DOI: 10.1016/j.bioorg.2020.103833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/17/2020] [Accepted: 04/06/2020] [Indexed: 12/11/2022]
Abstract
Two novel water-soluble pyrazolo[1,5-a]pyrimidine derivatives, 5-chloro-7-(4-methyl-piperazin -1-yl)-pyrazolo[1,5-a]pyrimidine (CMPS) and N'-(5-chloro-pyrazolo[1,5-a]pyrimidin-7-yl)-N,N-dimethyl -propane-1,3-diamine (NCPS), were synthesized and characterized with antibacterial activity. Then, the interactions of these compounds with bovine serum albumin (BSA) were studied by fluorescence, time-resolved fluorescence, circular dichroism (CD) spectroscopy and molecular docking. The results indicate that both CMPS and NCPS could effectively quench the intrinsic fluorescence of BSA via a static quenching process. The energy transfer from BSA to CMPS and NCPS may occur with high probability. Both CMPS and NCPS bind in the site I of BSA. The hydrophobic force and hydrogen bonds play major roles in the complex formation. Binding constants for both systems show that the affinity of CMPS binding to BSA is stronger than that of NCPS. The results of three-dimensional fluorescence and CD spectra reveal that the binding of CMPS and NCPS to BSA can induce conformational changes of BSA, and the influence of CMPS is slightly stronger than that of NCPS.
Collapse
Affiliation(s)
- Ling-Ling He
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Qi Qi
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xin Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China.
| | - Yu Li
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yao Zhu
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xiao-Fang Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Liang Xu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China.
| |
Collapse
|
38
|
Wang Y, Han Q, Zhang G, Zhang H. Evaluation of the binding mechanism of iodine with trypsin and pepsin: A spectroscopic and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 230:118036. [PMID: 31931358 DOI: 10.1016/j.saa.2020.118036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 12/28/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
In this work, the effects of I2 on the activities and conformational structures of digestive enzymes, trypsin and pepsin were studied. The results indicated that the enzyme activities were decreased to some extent in the presence of I2, especially trypsin. Upon gradual addition of I2, the intrinsic fluorescence quenching of trypsin and pepsin were observed by mainly static collision and hydrophobic forces. I2 is more likely to cause the fluorescence quenching of trypsin than that of pepsin. Compared with pepsin, trypsin has a greater ability to bind with I2. The synchronous fluorescence spectral results indicated that I2 induced the quaternary structure changes of trypsin/pepsin and changed the hydrophobicity of Tyr and Trp residues. In addition, molecular docking was used to obtain the binding mode and the various amino acid residues of trypsin and pepsin with I2. These investigations may constitute a solid work to further explain the process of migration and transformation of I2 in digestive system.
Collapse
Affiliation(s)
- Yanqing Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Qianqian Han
- School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China; Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing City, Jiangsu Province 210009, People's Republic of China
| | - Gencheng Zhang
- School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
| | - Hongmei Zhang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| |
Collapse
|
39
|
Bhatt AN, Rai Y, Verma A, Pandey S, Kaushik K, Parmar VS, Arya A, Prasad AK, Dwarakanath BS. Non-Enzymatic Protein Acetylation by 7-Acetoxy-4-Methylcoumarin: Implications in Protein Biochemistry. Protein Pept Lett 2020; 27:736-743. [PMID: 32133945 DOI: 10.2174/0929866527666200305143016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/23/2019] [Accepted: 12/29/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND The semi-synthetic acetoxycoumarins are known to acetylate proteins using novel enzymatic Calreticulin Transacetylase (CRTAase) system in cells. However, the nonenzymatic protein acetylation by polyphenolic acetates is not known. OBJECTIVE To investigate the ability of 7-acetoxy-4-methyl coumarin (7-AMC) to acetylate proteins non-enzymatically in the test tube. METHODS We incubated 7-AMC with BSA and analyzed the protein acetylation using Western blot technique. Further, BSA induced biophysical changes in the spectroscopic properties of 7-AMC was analyzed using Fluorescence spectroscopy. RESULTS Using pan anti-acetyl lysine antibody, herein we demonstrate that 7-AMC acetylates Bovine Serum Albumin (BSA) in time and concentration dependent manner in the absence of any enzyme. 7-AMC is a relatively less fluorescent molecule compared to the parental compound, 7- hydroxy-4-methylcoumarin (7-HMC), however the fluorescence of 7-AMC increased by two fold on incubation with BSA, depending on the time of incubation and concentration of BSA. Analysis of the reaction mixture of 7-AMC and BSA after filtration revealed that the increased fluorescence is associated with the compound of lower molecular weight in the filtrate and not residual BSA, suggesting that the less fluorescent 7-AMC undergoes self-hydrolysis in the presence of protein to give highly fluorescent parental molecule 7-HMC and acetate ion in polar solvent (phosphate buffered saline, PBS). The protein augmented conversion of 7-AMC to 7-HMC was found to be linearly related to the protein concentration. CONCLUSION Thus protein acetylation induced by 7-AMC could also be non-enzymatic in nature and this molecule can be exploited for quantification of proteins.
Collapse
Affiliation(s)
- Anant Narayan Bhatt
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Yogesh Rai
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Amit Verma
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Sanjay Pandey
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Kumar Kaushik
- Department of Chemistry and Environmental Science, Medgar Evers College, The City University of New York, New York City, NY, United States
| | - Virinder S Parmar
- Department of Chemistry and Environmental Science, Medgar Evers College, The City University of New York, New York City, NY, United States
| | - Anu Arya
- V.P. Chest Institute, Delhi, India
| | - Ashok K Prasad
- Deparment of Chemistry, University of Delhi, Delhi, India
| | - Bilikere S Dwarakanath
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| |
Collapse
|
40
|
Oleandrin induces apoptosis via activating endoplasmic reticulum stress in breast cancer cells. Biomed Pharmacother 2020; 124:109852. [PMID: 31972357 DOI: 10.1016/j.biopha.2020.109852] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/27/2019] [Accepted: 01/10/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Breast cancer is the most common malignant tumor in women. Due to limited treatment outcome and high rate of metastasis, the prognosis is especially poor for triple-negative breast cancer. It is urgent to discover and develop novel agents for treatment of breast cancer. Herein, we investigated the potential mechanisms of Oleandrin's (a cardiac glycoside) cytotoxic activity against breast cancer cells. METHODS Cell proliferation was assessed by xCELLigence Real-Time Cell Analyzer (RTCA)-MP system. Apoptotic cells were detected by using Annexin V/PI staining and nuclear fragments observation. The effect of oleandrin on ATP1B3 expression and markers of ER stress were determined by western blot. A primary cell sensitivity assay was performed via a collagen gel droplet-embedded culture drug sensitivity method (CD-DST). RESULTS Oleandrin suppressed cell proliferation and colony formation in the three breast cancer cell lines but did not affect normal mammary epithelial cells. Additionally, the expression of ATP1B3 was higher in the three breast cancer cell lines compared to MCF10A cells. Treatment with oleandrin increased the number of apoptotic cells and led to nuclear pyknosis, fragmentation, and apoptotic body formation in breast cancer cells. Furthermore, oleandrin treatment increased expression of Bax and Bim but decreased that of Bcl-2. Treatment with oleandrin also upregulated the expression of endoplasmic reticulum stress associated proteins, including eIF2α, ATF4, and CHOP, but not PERK. oleandrin treatment also induced the phosphorylation of PERK and eIF2α. Of note, oleandrin exhibited antitumor effects on patient-derived breast cancer cells under three-dimensional culture conditions. CONCLUSIONS Taken together, our results suggest that oleandrin induces mitochondrial-mediated apoptosis by activating endoplasmic reticulum stress in breast cancer. Moreover, oleandrin may be an effective strategy for the treatment of breast cancer.
Collapse
|
41
|
Pathak S, Tripathi S, Deori N, Ahmad B, Verma H, Lokhande R, Nagotu S, Kale A. Effect of tetracycline family of antibiotics on actin aggregation, resulting in the formation of Hirano bodies responsible for neuropathological disorders. J Biomol Struct Dyn 2020; 39:236-253. [PMID: 31948361 DOI: 10.1080/07391102.2020.1717629] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Actin, an ATPase superfamily protein, regulates some vital biological functions like cell locomotion, cytokinesis, synaptic plasticity and cell signaling in higher eukaryotes, and is dependent on the dynamics of actin polymerization process. Impaired regulation of actin polymerization has been implicated in the formation and deposition of rod-like paracrystalline structures called as Hirano bodies in neuronal cells of patients suffering from Alzheimer's disease, Pick's disease, Guam amyotrophic lateral sclerosis and parkinsonism-dementia complex. Aggregation of actin forming amorphous deposition in the brain cells is also associated with chronic alcoholism and aging of the neurons. In the current article, we propose the breaking of the highly amorphous and dysregulated actin aggregates using generic compounds like tetracycline, oxytetracycline, doxycycline and minocycline which are used as antibiotics against tuberculosis and infection caused due to various Gram-negative bacteria. We have investigated the effect and affinity of binding of these four compounds to that of actin aggregates using 90° light scattering, size exclusion chromatography, dynamic light scattering, circular dichroism, scanning electron microscopy, transmission electron microscopy imaging and kinetic analysis. The isothermal calorimetric measurements showed that the binding constant for the cycline family molecules used in this study range from 9.8 E4 M-1 to 1.3 E4 M-1. To understand the in vivo effect, we also studied the effect of these drugs on Saccharomyces cerevisiae Δend3 mutant cells. Our data suggest that these generic compounds can plausibly be used for the treatment of various neurodegenerative diseases occurring due to Hirano body formation in brain cells.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Samridhi Pathak
- School of Chemical Sciences, UM-DAE Center for Excellence in Basic Sciences, University of Mumbai, Mumbai, Maharashtra, India
| | - Sarita Tripathi
- School of Chemical Sciences, UM-DAE Center for Excellence in Basic Sciences, University of Mumbai, Mumbai, Maharashtra, India
| | - Nayan Deori
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Basir Ahmad
- School of Chemical Sciences, UM-DAE Center for Excellence in Basic Sciences, University of Mumbai, Mumbai, Maharashtra, India.,Protein Assembly Laboratory, JH-Institute of Molecular Medicine, New Delhi, India
| | - Hriday Verma
- School of Life Sciences, Jaipur National University, Jaipur, Rajasthan, India
| | - Rama Lokhande
- School of Life Sciences, Jaipur National University, Jaipur, Rajasthan, India
| | - Shirisha Nagotu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Avinash Kale
- School of Chemical Sciences, UM-DAE Center for Excellence in Basic Sciences, University of Mumbai, Mumbai, Maharashtra, India
| |
Collapse
|
42
|
Umme Hani, Kandagalla S, Sharath BS, Jyothsna K, Manjunatha H. Network Pharmacology Approach Uncovering Pathways Involved in Targeting Hsp90 Through Curcumin and Epigallocatechin to Control Inflammation. Curr Drug Discov Technol 2019; 18:127-138. [PMID: 31820701 DOI: 10.2174/1570163816666191210145652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/07/2019] [Accepted: 10/15/2019] [Indexed: 11/22/2022]
Abstract
AIMS To fetch pathways involved in targetting Hsp90 through Curcumin and Epigallocatechin through Network pharmacological approach. BACKGROUND Hsp90 is a molecular chaperone involved in stabilizing inflammatory protein which may lead to chronic diseases. The herbal compounds Curcumin and Epigallocatechin processing antiinflammatory properties are known to follow a common pathway and control the expression of Hsp90. OBJECTIVE To collect the gene targets of Hsp90, Curcumin and Epigallocatechin in order to understand protein-protein interactions of gene targets by constructing the interactome to identify the hub proteins. Hub proteins docking was performed with curcumin and epigallocatechin. Finally, hub proteins involvement with various human diseases were identified. METHODS The gene targets of Hsp90, Curcumin and Epigallocatechin were obtained from there respective databases. Protein-protein interactions of Pkcδ-Nrf2 and Tlr4 pathway gene targets were collected from String database. Protein interaction network was constructed and merged to get intercession network in cytoscape and Cluego was used to predict the disease related target genes. Docking of ligands to target proteins was carried out using Autodock vina tool. RESULT The main key regulators of Curcumin and Epigallocatechin were identified particularly from Pkcδ-Nrf2 and Tlr4 pathway. CONCLUSION The combined action of Curcumin and Epigallocatechin can reduce the expression of Hsp90 eventually controlling the inflammation.
Collapse
Affiliation(s)
- Umme Hani
- Department of Biotechnology, Janana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451, India
| | - Shivananda Kandagalla
- Department of Biotechnology, Janana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451, India
| | - B S Sharath
- Department of Biotechnology, Janana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451, India
| | - K Jyothsna
- Department of Biotechnology, Janana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451, India
| | - Hanumanthappa Manjunatha
- Department of Biotechnology, Janana Sahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451, India
| |
Collapse
|
43
|
Yang R, Tao Y, Li G, Chen J, Shu J, He Y. Immunoenhancement of Recombinant Neisseria meningitides PorB Protein on Porcine Circovirus Type 2 and Mycoplasma hyopneumoniae Genetically Engineered Vaccines. Protein Pept Lett 2019; 26:776-784. [PMID: 31208304 DOI: 10.2174/0929866526666190430115052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Porcine circovirus and Mycoplasma hyopneumoniae can cause respiratory diseases in pigs, which cause serious economic loss in the worldwide pig industry. Currently, these infections are mainly prevented and controlled by vaccination. The new vaccines on the market are mainly composed of subunits and inactivated vaccines but usually have lower antigenicity than traditional live vaccines. Thus, there is an increasing need to develop new adjuvants that can cause rapid and long-lasting immunity to enhance the antigenic efficacy for vaccines. Studies have shown that meningococcal porin PorB can act as a ligand to combine with Toll-like receptors to activate the production of immunological projections and act as a vaccine immunological adjuvant. OBJECTIVE In this article, we expressed and purified the recombinant PorB protein and verified its immunogenicity against porcine circovirus type 2 and Mycoplasma hyopneumoniae genetically engineered vaccine. METHODS In this article, we used prokaryotic expression to express and purify recombinant PorB protein, four different concentrations of PorB protein, Freund's adjuvant with two genetically engineered vaccines were combined with subcutaneous immunization of mice. RESULTS Our study shows that the appropriate dose of the recombinant protein PorB can enhance the levels of humoral and cellular responses induced by two genetically engineered vaccines in a short period of time in mice. The PorB adjuvant group may cause statistically higher antibody titers for both genetically engineered vaccines compared to Freund's commercial adjuvant (P<0.001). CONCLUSION The recombinant protein PorB may be a good candidate adjuvant for improving the protective effect of vaccines against porcine circovirus type 2 and Mycoplasma hyopneumoniae, and the protein can be used for future practical applications.
Collapse
Affiliation(s)
- Rui Yang
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yu Tao
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Gaojian Li
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jian Chen
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jianhong Shu
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yulong He
- College of Life Sciences and Medicine, Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| |
Collapse
|
44
|
Naik R, Jaldappagari S. Spectral and computational attributes: Binding of a potent anticancer agent, dasatinib to a transport protein. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111492] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
45
|
Saiganesh S, Saathvika R, Arumugam B, Vishal M, Udhaya V, Ilangovan R, Selvamurugan N. TGF-β1-stimulation of matrix metalloproteinase-13 expression by down-regulation of miR-203a-5p in rat osteoblasts. Int J Biol Macromol 2019; 132:541-549. [PMID: 30951775 DOI: 10.1016/j.ijbiomac.2019.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 02/06/2023]
Abstract
Transforming growth factor-beta1 (TGF-β1) is a pleiotropic and ubiquitous cytokine involved in bone development and bone remodeling. Matrix metalloproteinase-13 (MMP13) plays a role in the degradation of the extracellular matrix (ECM), and the regulation of this gene is critical in bone remodeling. We previously reported that TGF-β1 stimulates MMP13 expression in rat osteoblasts. Recently, studies have examined the regulation of bone metabolism by microRNAs (miRNAs) to determine their therapeutic potential in osteogenesis. Here, we assessed the effect of TGF-β1 on down-regulation of miRNAs that target MMP13 and stimulation of MMP13 expression in osteoblasts. We used in silico analysis and identified 11 specific miRNAs which directly target rat MMP13. Among these miRNAs, miR-203a-5p expression was significantly decreased by TGF-β1-treatment in rat osteoblasts. Transient transfection of a miR-203a-5p mimic into rat osteoblasts reduced MMP13 expression. A luciferase reporter assay confirmed a direct targeting of miR-miR-203a-5p with the 3' untranslated regions of the MMP13 gene. Hence, we suggest that TGF-β1 stimulated down-regulation of miR-203a-5p, resulting in the stimulation of MMP13 expression in rat osteoblasts. Thus, identification of the role of miR-203a-5p via TGF-β1 and MMP13 in bone remodeling indicated its potential as a biomarker or therapeutic agent for treating bone and bone-related diseases.
Collapse
Affiliation(s)
- S Saiganesh
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - R Saathvika
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - B Arumugam
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - M Vishal
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - V Udhaya
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - R Ilangovan
- Department of Endocrinology, Dr. A.L.M. PG Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, Tamil Nadu, India
| | - N Selvamurugan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India.
| |
Collapse
|
46
|
Ma Z, Prasanna G, Jiang L, Jing P. Molecular interaction of cyanidin-3-O-glucoside with ovalbumin: insights from spectroscopic, molecular docking and in vitro digestive studies. J Biomol Struct Dyn 2019; 38:1858-1867. [DOI: 10.1080/07391102.2019.1618735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen Ma
- Research Center for Food Safety and Nutrition, Shanghai Engineering Research Center of Food Safety, Key Lab of Urban Agriculture (South), Bor S. Luh Food Safety Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Govindarajan Prasanna
- Research Center for Food Safety and Nutrition, Shanghai Engineering Research Center of Food Safety, Key Lab of Urban Agriculture (South), Bor S. Luh Food Safety Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Linlei Jiang
- Research Center for Food Safety and Nutrition, Shanghai Engineering Research Center of Food Safety, Key Lab of Urban Agriculture (South), Bor S. Luh Food Safety Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Pu Jing
- Research Center for Food Safety and Nutrition, Shanghai Engineering Research Center of Food Safety, Key Lab of Urban Agriculture (South), Bor S. Luh Food Safety Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
47
|
Sismanoglu S. Investigation by UV spectrophotometry of removal of para-nitrophenol on raney alloy. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
48
|
Fu X, Fang Y, Zhao H, Liu S. Size-dependent binding of pristine fullerene (nC 60 ) nanoparticles to bovine/human serum albumin. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
49
|
Sengupta B, Acharyya A, Sen P. Elucidation of the local dynamics of domain-III of human serum albumin over the ps-μs time regime using a new fluorescent label. Phys Chem Chem Phys 2018; 18:28548-28555. [PMID: 27711622 DOI: 10.1039/c6cp05743h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ps-μs dynamics of domain-III of human serum albumin (HSA) has been investigated using a new fluorescent marker selectively labeled to the Tyr-411 residue. The location of the marker has been confirmed using Förster resonance energy transfer (FRET) study. Steady state, time-resolved and single molecular level fluorescence techniques have been employed to understand the dynamics within the domain-III of HSA. It is found that solvent reorganization dynamics in domain-III is 1.7 times faster than that in domain-I. The timescale of the local rotational dynamics of domain-III is found to be 2.3 times faster than that of domain-I. Fluorescence correlation spectroscopic experiments reveal that domain-III of HSA has more conformational flexibility than domain-I. Together, the results deliver useful details of the local environment around the domain-III of HSA, which have not been explored earlier, mainly because of a lack of a suitable fluorescent marker for domain-III. The newly synthesized probe serves well as a site specific fluorescent marker for HSA, and can be used for further investigation of the ligand binding properties and enzymatic activity of domain-III of HSA.
Collapse
Affiliation(s)
- Bhaswati Sengupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
| | - Arusha Acharyya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
| | - Pratik Sen
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
| |
Collapse
|
50
|
Wani MA, Pandey MD, Pandey R, Maurya SK, Goswami D. A Dual-Signaling Ferrocene-Pyrene Dyad: Triple-Mode Recognition of the Cu(II) Ions in Aqueous Medium. J Fluoresc 2017; 27:2279-2286. [PMID: 28840438 DOI: 10.1007/s10895-017-2169-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/10/2017] [Indexed: 11/29/2022]
Abstract
We report a structure of ferrocene-pyrene conjugate (1) comprising electro and photo-active dual-signaling units. In particular, 1 upon interaction with Cu(II), displays selectively one-photon fluorescence quenching, but it shows two-photon absorption (TPA) cross-section 1230 GM (at 780 nm). Further, 1 displayed two irreversible oxidative waves at 0.39 V and 0.80 V (vs Ag/AgCl), in the electrochemical analysis which upon addition of Cu2+, led to the negative potential shift in both the oxidative waves to appear at 0.25 V and 0.68 V. The triple mode changes in presence of Cu(II) suggesting the possible application of 1 for the detection of Cu(II) in aqueous media. Graphical Abstract.
Collapse
Affiliation(s)
- Manzoor Ahmad Wani
- Department of Chemistry, Dr. H. S. Gour Central University, Sagar, 470003, India
| | - Mrituanjay D Pandey
- Department of Chemistry, Dr. H. S. Gour Central University, Sagar, 470003, India.
| | - Rampal Pandey
- Department of Chemistry, Dr. H. S. Gour Central University, Sagar, 470003, India.
| | - Sandeep Kumar Maurya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Debabrata Goswami
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| |
Collapse
|