1
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Wang X, Wang Z, Zhang K, Szeto IMY, Yan Y, Liu B, Zhang J, Evivie SE, Li B, Duan S. Evaluating the binding mechanism, structural changes and stability of ternary complexes formed by the interaction of folic acid with whey protein concentrate-80 and L-ascorbyl 6-palmitate. Food Chem 2024; 457:139924. [PMID: 38917563 DOI: 10.1016/j.foodchem.2024.139924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/13/2024] [Accepted: 05/29/2024] [Indexed: 06/27/2024]
Abstract
In the present study, we investigated the mechanisms associated with the stabilizing effects of whey protein concentrate-80 (WPC80) and L-ascorbyl 6-palmitate (LAP) on folic acid (FA). Multispectral techniques show that WPC80 binds to FA and LAP mainly through hydrophobic interactions, and that energy is transferred from WPC80 to FA and LAP in a nonradiative form (FA/LAP); The combination of FA/LAP resulted in a change in the conformation and secondary structure content of WPC80, an increase in the absolute zeta potential of the system, and a shift in the particle size distribution towards smaller sizes. The compound system exhibits strengthened antioxidant properties and favorable binding properties. Besides, WPC80 improves the storage stability of FA under different conditions. These results demonstrated that the ternary complex formed by FA co-binding with WPC80 and LAP is an effective way to improve the stability against of FA.
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Affiliation(s)
- Xiaodong Wang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; Food College, Northeast Agricultural University, Harbin 150030, China
| | - Zengbo Wang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; Food College, Northeast Agricultural University, Harbin 150030, China
| | - Kangyong Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; Food College, Northeast Agricultural University, Harbin 150030, China
| | - Ignatius Man-Yau Szeto
- National Center of Technology Innovation for Dairy, Hohhot 010110, China; Inner Mongolia Yili Industrial Group, Co. Ltd., Yili Maternal and Infant Nutrition Institute (YMINI), Beijing, 100070, China
| | - Yalu Yan
- Inner Mongolia Yili Industrial Group, Co. Ltd., Yili Maternal and Infant Nutrition Institute (YMINI), Beijing, 100070, China
| | - Biao Liu
- Inner Mongolia Yili Industrial Group, Co. Ltd., Yili Maternal and Infant Nutrition Institute (YMINI), Beijing, 100070, China
| | - Jie Zhang
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Smith Etareri Evivie
- Department of Food Science and Human Nutrition, Faculty of Agriculture, University of Benin, Benin City 300001, Nigeria
| | - Bailiang Li
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; Food College, Northeast Agricultural University, Harbin 150030, China.
| | - Sufang Duan
- National Center of Technology Innovation for Dairy, Hohhot 010110, China; Inner Mongolia Yili Industrial Group, Co. Ltd., Yili Maternal and Infant Nutrition Institute (YMINI), Beijing, 100070, China.
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2
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Abdollahi-Najafabadi M, Farhadian S, Shareghi B, Asgharzadeh S. The investigation of the interaction determination between carbendazim and elastase, using both in vitro and in silico methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 319:124586. [PMID: 38833886 DOI: 10.1016/j.saa.2024.124586] [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: 11/23/2023] [Revised: 05/28/2024] [Accepted: 06/01/2024] [Indexed: 06/06/2024]
Abstract
Pesticides, including fungicides, are one of the important groups of environmental toxins that affect human and animal health. Studies have shown that these compounds are considered chemical pollutants. Carbendazim is a systemic fungicide. Unfortunately, excessive use of carbendazim has caused environmental pollution all over the world. In this study, the effect of carbendazim on the enzyme elastase (secreted from the endocrine gland of the pancreas) has been investigated. In a study, the performance and reaction of carbendazim with elastase were investigated using spectroscopic techniques. The stability and structure of elastase enzymes were studied under the influence of carbendazim. The results of fluorescence emission and UV-visible absorption spectrum showed that in the presence of carbendazim, there is an increase in UV-Vis absorption and a decrease in the intensity of the intrinsic fluorescence emission in the protein spectrum. Additionally, a decrease in the thermal stability of elastase was observed in the presence of carbendazim. The stability and structure of elastase enzyme were investigated in the presence of carbendazim. The results revealed that the UV-Vis absorption increased due to the presence of carbendazim, as indicated by the hyperchromic spectrum at 220 and 280 nm peaks. Additionally, the intrinsic fluorescence emission in the protein spectrum decreased with increasing carbendazim concentration at three different temperatures (298, 303, and 313 K). Moreover, the study demonstrated that the TM decreased from 2.59 to 4.58 with the increase of carbendazim, suggesting a decrease in the stability of the elastase structure in response to the elevated carbendazim concentration. According to the results of the research, the interaction between elastase and carbendazim has occurred, and changes have been made in the enzyme under the influence of carbendazim. The formation of the complex between elastase and carbendazim was consistent with the results obtained from molecular simulation and confirmed the thermodynamic data.
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Affiliation(s)
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Sanaz Asgharzadeh
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
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3
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Shamsi A, Shahwan M, Furkan M, Yadav DK, Khan RH. Computational and spectroscopic insight into the binding of citral with human transferrin: Targeting neurodegenerative diseases. Heliyon 2024; 10:e32755. [PMID: 39027624 PMCID: PMC467046 DOI: 10.1016/j.heliyon.2024.e32755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/16/2024] [Accepted: 06/07/2024] [Indexed: 07/20/2024] Open
Abstract
The involvement of neuroinflammation in the pathogenesis of neurodegenerative disorders (NDs) is very significant. Currently, only symptomatic treatments exist, and there are no drugs that modify the progression of Alzheimer's disease (AD) or other NDs. Consequently, there is increasing attention on addressing AD-related neuroinflammation using anti-inflammatory compounds and antioxidants. Currently, there is a growing exploration of dietary phytochemicals as potential therapeutic agents for treating inflammation. Citral, a monoterpene, is under increasing investigation due to its neuroprotective effects. The dysregulation of iron homeostasis is a crucial factor in supporting neuroinflammation, underscoring the significance of proper iron balance. Human transferrin (htf) is a major player involved in iron homeostasis. In this study, we examined binding and dynamics of htf-citral complex through diverse experimental methods. Molecular docking studies revealed that citral binds to crucial residues of htf, forming a stable complex. UV-visible spectroscopy demonstrated binding of citral with htf with good affinity, evident from binding constant of 1.48 × 105 M-1. Further, fluorescence spectroscopy entrenched a stable htf-citral complex formation; citral demonstrates an excellent binding affinity to htf with a binding constant of 106 M-1. Moreover, fluorescence binding assay at various temperatures deciphered htf-citral complex to be driven by both static and dynamic quenching. The analysis of enthalpy change (ΔH) and entropy change (ΔS) demonstrated that htf-citral complex formation was driven mainly by hydrophobic interactions.The current work gives a platform to develop innovative therapeutic strategies targeting neuroinflammation through citral, particularly iron homeostasis.
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Affiliation(s)
- Anas Shamsi
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, United Arab Emirates
| | - Moyad Shahwan
- College of Pharmacy and Health Sciences, Ajman University, United Arab Emirates
| | - Mohammad Furkan
- Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | - Dharmendra Kumar Yadav
- Gachon Institute of Pharmaceutical Science and Department of Pharmacy, College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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4
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Alrouji M, Alhumaydhi FA, Furkan M, Venkatesan K, Sharaf SE, Shahwan M, Khan RH, Shamsi A. Evaluation of the Binding Mechanism of Dietary Phytochemical, Ellagic Acid, with Human Transferrin: Spectroscopic, Calorimetric, and Computational Approaches Targeting Neurodegenerative Diseases. ACS OMEGA 2024; 9:16089-16096. [PMID: 38617645 PMCID: PMC11007773 DOI: 10.1021/acsomega.3c09792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/04/2024] [Accepted: 03/13/2024] [Indexed: 04/16/2024]
Abstract
Human transferrin (Htf) is vital in maintaining iron within the brain cells; any disruption results in the development of neurodegenerative diseases (NDs) and other related pathologies, especially Alzheimer's disease (AD). Ellagic acid (EA), a naturally occurring phenolic antioxidant, possesses neuroprotective potential and is present in a broad variety of fruits and vegetables. The current work explores the binding mechanism of dietary polyphenol, EA, with Htf by a combination of experimental and computational approaches. Molecular docking studies unveiled the binding of EA to Htf with good affinity. Molecular dynamic (MD) simulation further provided atomistic details of the binding process, demonstrating a stable Htf-EA complex formation without causing substantial alterations to the protein's conformation. Furthermore, fluorescence binding measurements indicated that EA forms a high-affinity interaction with Htf. Isothermal titration calorimetric measurements advocated the spontaneous nature of binding and also revealed the binding process to be exothermic. In conclusion, the study deciphered the binding mechanism of EA with Htf. The results demonstrated that EA binds with Htf with an excellent affinity spontaneously, thereby laying the groundwork for potential applications of EA in the realm of therapeutics for NDs in the context of iron homeostasis.
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Affiliation(s)
- Mohammed Alrouji
- Department
of Medical Laboratories, College of Applied Medical Sciences, Shaqra University, Shaqra 11961, Saudi Arabia
| | - Fahad A. Alhumaydhi
- Department
of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia
| | - Mohammad Furkan
- Department
of Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Kumar Venkatesan
- Department
of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Sharaf E. Sharaf
- Pharmaceutical
Sciences Department, College of Pharmacy, Umm Al-Qura University, Makkah 21421, Saudi Arabia
| | - Moyad Shahwan
- Centre
of
Medical and Bio-allied Health Sciences Research, Ajman University, Ajman 346 United Arab
Emirates
| | - Rizwan Hasan Khan
- Interdisciplinary
Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Anas Shamsi
- Centre
of
Medical and Bio-allied Health Sciences Research, Ajman University, Ajman 346 United Arab
Emirates
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5
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Shamsi A, Shahwan M, Das Gupta D, Abdullah KM, Khan MS. Implication of Caffeic Acid for the Prevention and Treatment of Alzheimer's Disease: Understanding the Binding with Human Transferrin Using In Silico and In Vitro Approaches. Mol Neurobiol 2024; 61:2176-2185. [PMID: 37864768 DOI: 10.1007/s12035-023-03696-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/04/2023] [Indexed: 10/23/2023]
Abstract
In present times, a switch from chemical molecules towards natural products is taking place, and the latter is being increasingly explored in the management of diseases due to their broad range of therapeutic potential. Consumption of coffee is thought to reduce Alzheimer's disease (AD); however, the mechanism is still unexplored. Primarily, it is thought that components of coffee are the key players in making it a neuroprotectant. Caffeic acid (CA) is found in high quantities in coffee; thus, it is being increasingly explored to decipher its neuroprotection by various mechanisms. Iron is a toxic element in a free form capable of causing oxidative damage and ultimately contributing to the pathogenesis of AD. Thus, maintaining the proper iron levels is vital and human transferrin (Htf), a glycoprotein, is a key player in this aspect. In this work, we explored the binding mechanism of CA with Htf at the atomistic level, employing molecular docking and extensive molecular dynamics simulation (MD) approaches coupled with spectroscopic techniques in a bid to decipher the mode of interaction of CA with Htf. Molecular docking results demonstrated a strong binding affinity between CA and Htf. Furthermore, MD study highlighted the Htf-CA complex's stability and the ligand's minimal impact on Htf's overall structure. In silico approaches were further backed up by experimental approaches. Strong binding of CA with Htf was ascertained by UV-visible and fluorescence spectroscopy observations. Together, the study provides a comprehensive understanding of the Htf-CA interaction, adding to the knowledge of the use of CA in the treatment of AD, thereby adding another feather to its already known neuroprotective role.
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Affiliation(s)
- Anas Shamsi
- Center for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates.
| | - Moyad Shahwan
- Center for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
- Department of Clinical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, United Arab Emirates
| | - Debarati Das Gupta
- College of Pharmacy, University of Michigan, 2428 Church Street, Ann Arbor, MI, 48109, USA
| | - K M Abdullah
- Department of Chemistry and Biochemistry, School of Sciences, Jain University, Bengaluru, India
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
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6
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He F, Shi H, Hu S, Liu R. Regulation mechanisms of ferric ions release from iron-loaded transferrin protein caused by nano-sized polystyrene plastics-induced conformational and structural changes. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133495. [PMID: 38232549 DOI: 10.1016/j.jhazmat.2024.133495] [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: 12/01/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
Currently, the binding of iron-binding protein transferrin (TF) with NPs and their interaction mechanisms have not been completely elucidated yet. Here, we probed the conformation-dependent release of Fe ions from TF induced by nano-sized polystyrene plastics (PS-NPs) using dialysis, ICP-MS, multi-spectroscopic techniques, and computational simulation. The results showed that the release of free Fe ions from TF was activated after PS-NPs binding, which displayed a clear dose-effect correlation. PS-NPs binding can induce the unfolding and loosening of polypeptide chain and backbone of TF. Alongside this we found that the TF secondary structure was destroyed, thereby causing TF protein misfolding and denaturation. In parallel, PS-NPs interacted with the chromophores, resulting in the occurrence of fluorescence sensitization effects and the disruption of the surrounding micro-environment of aromatic amino acids. Also, the binding of PS-NPs induced the formation of new aggregates in the PS-NPs-TF system. Further simulations indicated that PS-NPs exhibited a preference for binding to the hinge region that connects the C-lobe and N-lobe, which is responsible for the Fe ions release and structural alterations of TF. This finding provides a new understanding about the regulation of the release of Fe ions of iron-loaded TF through NPs-induced conformational and structural changes.
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Affiliation(s)
- Falin He
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Huijian Shi
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Shaoyang Hu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
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7
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Alrouji M, Alhumaydhi FA, Venkatesan K, Sharaf SE, Shahwan M, Shamsi A. Evaluation of binding mechanism of dietary phytochemical, capsaicin, with human transferrin: targeting neurodegenerative diseases therapeutics. Front Pharmacol 2024; 15:1348128. [PMID: 38495092 PMCID: PMC10943693 DOI: 10.3389/fphar.2024.1348128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/16/2024] [Indexed: 03/19/2024] Open
Abstract
Human transferrin (htf) plays a crucial role in regulating the balance of iron within brain cells; any disruption directly contributes to the development of Neurodegenerative Diseases (NDs) and other related pathologies, especially Alzheimer's Disease (AD). In recent times, a transition towards natural compounds is evident to treat diseases and this shift is mainly attributed to their broad therapeutic potential along with minimal side effects. Capsaicin, a natural compound abundantly found in red and chili peppers, possess neuroprotective potential. The current work targets to decipher the interaction mechanism of capsaicin with htf using experimental and computational approaches. Molecular docking analysis revealed that capsaicin occupies the iron binding pocket of htf, with good binding affinity. Further, the binding mechanism was investigated atomistically using Molecular dynamic (MD) simulation approach. The results revealed no significant alterations in the structure of htf implying the stability of the complex. In silico observations were validated by fluorescence binding assay. Capsaicin binds to htf with a binding constant (K) of 3.99 × 106 M-1, implying the stability of the htf-capsaicin complex. This study lays a platform for potential applications of capsaicin in treatment of NDs in terms of iron homeostasis.
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Affiliation(s)
- Mohammed Alrouji
- Department of Medical Laboratories, College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia
| | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Kumar Venkatesan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Sharaf E. Sharaf
- Pharmaceutical Sciences Department, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Moyad Shahwan
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Anas Shamsi
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
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8
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Shamsi A, Furkan M, Khan RH, Khan MS, Shahwan M, Yadav DK. Comprehensive insight into the molecular interaction of rutin with human transferrin: Implication of natural compounds in neurodegenerative diseases. Int J Biol Macromol 2023; 253:126643. [PMID: 37657585 DOI: 10.1016/j.ijbiomac.2023.126643] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
Neurodegeneration, a process of irreversible neuronal damage, is characterized by a damaged neuronal structure and function. The interplay between various proteins maintains homeostasis of essential metals in the brain, shielding neurons from degeneration; human transferrin (Htf) is essential in maintaining iron homeostasis. Any disruption in iron homeostasis results in the development of neurodegenerative diseases (NDs) and their pathology, mainly Alzheimer's disease (AD). Rutin is a known compound for its neuroprotective effects. In this work, we deciphered the binding of rutin with Htf in a bid to understand the interaction mechanism. The results of fluorescence and UV-vis spectroscopy demonstrated strong interaction between rutin and Htf. The enthalpy change (∆H°) and entropy change (∆S°) analysis demonstrated hydrophobic interactions as the prevalent forces. The binding mechanism of rutin was further assessed atomistically by molecular docking and extensive 200 ns molecular dynamic simulation (MD) studies; molecular docking showed binding of rutin within Htf's binding pocket. MD results suggested that binding of rutin to Htf does not cause significant structural switching or disruption of the protein's native packing. Overall, the study deciphers the binding of rutin with hTf, delineating the binding mechanism and providing a platform to use rutin in NDs therapeutics.
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Affiliation(s)
- Anas Shamsi
- Center for Medical and Bio-Allied Health Sciences Research, Ajman University, United Arab Emirates.
| | - Mohammad Furkan
- Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Saudi Arabia.
| | - Moyad Shahwan
- Center for Medical and Bio-Allied Health Sciences Research, Ajman University, United Arab Emirates.
| | - Dharmendra Kumar Yadav
- Gachon Institute of Pharmaceutical Science and Department of Pharmacy, College of Pharmacy, Gachon University, Incheon, Republic of Korea.
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Shahwan M, Anwar S, Yadav DK, Khan MS, Shamsi A. Experimental and Computational Insights into the Molecular Interactions between Human Transferrin and Apigenin: Implications of Natural Compounds in Targeting Neuroinflammation. ACS OMEGA 2023; 8:46967-46976. [PMID: 38107922 PMCID: PMC10719914 DOI: 10.1021/acsomega.3c06799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/18/2023] [Accepted: 10/30/2023] [Indexed: 12/19/2023]
Abstract
Neuroinflammation plays a vital role in Alzheimer's disease (AD) pathogenesis and other neurodegenerative disorders (NDs). Presently, only symptomatic treatments are available and no disease-modifying drugs are available for AD and other NDs. Thus, targeting AD-associated neuroinflammation with anti-inflammatory compounds and antioxidants has recently been given much focus. Now, flavonoids are being increasingly investigated as therapeutic agents to treat inflammation; apigenin has a neuroprotective effect. Iron dyshomeostasis plays a key role in sustaining the neuroinflammatory phenotype, highlighting the importance of maintaining iron balance, in which human transferrin (HTF) plays a vital role in this aspect. Herein, we explored the binding and dynamics of the HTF-apigenin complex using multifaceted computational and experimental approaches. Molecular docking revealed that apigenin occupies the iron-binding pocket of HTF, forming hydrogen bonds with critical residues Arg475 and Thr686. Molecular dynamics simulations deciphered a dynamic view of the HTF-apigenin complex's behavior (300 ns) and suggested that the complex maintained a relatively stable conformation. The results of spectroscopic observations delineated significant binding of apigenin with HTF and stable HTF-apigenin complex formation. The observed binding mechanism and conformational stability could pave the way for developing novel therapeutic strategies to target neuroinflammation by apigenin in the context of iron homeostasis.
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Affiliation(s)
- Moyad Shahwan
- Center
for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman 346, United Arab
Emirates
| | - Saleha Anwar
- Centre
for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Dharmendra Kumar Yadav
- College
of Pharmacy, Gachon University of Medicine
and Science, Incheon 21565, Republic
of Korea
| | - Mohd Shahnawaz Khan
- Department
of Biochemistry, College of Science, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Anas Shamsi
- Center
for Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman 346, United Arab
Emirates
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10
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Wang M, Wang YC, Bai ZL, Sui Y, Yin D, Yin H. Exploring thyroxine binding globulin structural changes and its release from human hepatoblastoma cells upon interaction with silica particles: A prelude to unrevealing the mechanism of thyroid hormone dysregulation. Int J Biol Macromol 2023; 251:126240. [PMID: 37567530 DOI: 10.1016/j.ijbiomac.2023.126240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 08/13/2023]
Abstract
Endocrine dysregulation in the presence of environmental chemical risk factors is a global adverse health concern. The aim of this investigation was to explore the structural changes and binding affinity of thyroxine (T4) binding protein (TBG) upon interaction with SiO2 particles as the second largest mineral in the Earth's crust and one of the most important constituents of rock, soil, and dust. Therefore, the interaction of TBG with SiO2 particles was assessed by fluorescence quenching, molecular docking, ANS and synchronous fluorescence, and far-UV CD analyses. Also, the release of TBG from human hepatoblastoma cell line, Hep G2, was assessed by ELISA assay. The results displayed that the value of stoichiometry of binding site (n) of TBG for T4 was approximately equal to one, which was reduced to 0.36 in the presence of SiO2 particles. Also, the binding affinity (Kb) values revealed that the binding affinity between T4 and TBG was strong (97.90 × 105 L/mol), while the presence of SiO2 particles resulted in the calculation of a Kb around 0.00159 × 105 L/mol, which was significantly lower than that of the absence of SiO2 particles. This data was also verified by molecular docking analyses which indicated that SiO2 particles interacted with the T4 binding pocket of TBG. Moreover, further studies exhibited that although the equimolar concentration of T4 to TBG resulted in the superior stability of TBG-T4 complex relative to free TBG, the presence of SiO2 particles with the same concentration led to denaturation of the secondary structure of TBG. Furthermore, it was seen that the amount of released TBG in the cell culture medium of Hep G2 was about 2.21 ng/mL protein, whereas this amount in SiO2 particles-treated cell group was significantly reduced to 1.71 ng/mL protein (*P < 0.05). In conclusion, this study implies that SiO2 particles show the potential to result in inhibition of TBG release, TBG denaturation, and interfere with TBG binding affinity which may lead to dysregulation of the thyroid hormone transport and associated signaling pathways.
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Affiliation(s)
- Meiqi Wang
- Department of Ophthalmology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu-Chen Wang
- General Hospital of Ningxia Medical University, Cancer Institute, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Zhou-Lan Bai
- Department of Radiation Oncology, General Hospital of Ningxia Medical University, Cancer Institute, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Yang Sui
- Life Science Center, Yunnan University, Kunming, China
| | - Detao Yin
- Department of Thyroid Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Hua Yin
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia, China.
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Li Y, Li X, Cui Z, He F, Zong W, Liu R. Probing the toxic effect of quinoline to catalase and superoxide dismutase by multispectral method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122449. [PMID: 36753919 DOI: 10.1016/j.saa.2023.122449] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Quinoline is a common nitrogen heterocyclic aromatic hydrocarbon with high water solubility. Studies have shown that quinoline can be teratogenic, carcinogenic and mutagenic. And Hepatocytes are the target cell of quinoline, which contain a large number of mitochondria and are related to cell function and the balance of reactive oxygen species (ROS). However, the research on the effect of quinoline on hepatocyte damage and anti-oxidation system is still unclear. Through the means of multispectral experiments, it is concluded that quinoline can affect the catalase (CAT) and superoxide dismutase (SOD), change their structure and affect their activity. The binding mode and binding site of quinoline to CAT/SOD were analyzed by isothermal calorimetric titration (ITC) and Molecular Operating Environment (MOE). In molecular docking simulation, the binding site of quinoline-CAT system is close to the active site, and affect the microenvironment of Tyr 357. This may be the reason why quinoline affects CAT activity and synchronous fluorescence (Δλ = 15 nm). This study demonstrated that quinoline has a great effect on CAT, which may affect the intracellular ROS balance and become a potential way to cause hepatocyte damage.
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Affiliation(s)
- Yuze Li
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Xiangxiang Li
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Zhihan Cui
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Falin He
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China - America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
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12
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Li X, Han L, Song Z, Xu R, Wang L. Comparative study on the interaction between transferrin and flavonols: Experimental and computational modeling approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122128. [PMID: 36455462 DOI: 10.1016/j.saa.2022.122128] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/27/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Transferrin is the indispensable component in the body fluids and has been explored as a potential drug carrier for target drugs to cancer cells. Flavonols are widely distributed in plants and shown a wide range of biological activities. In the present study, the interaction between flavonols (including galangin, kaempferol, quercetin, and myricetin) and transferrin under physiological conditions was investigated by using experimental as well as computational approaches. Fluorescence data reveal that the fluorescence quenching mechanism of transferrin by flavonols is static quenching. Transferrin has moderate affinity with flavonols, and the binding constants (Ka) are 103-104 L/mol. In addition, there are two different binding sites for the interaction between kaempferol and transferrin. Thermodynamic parameter analysis shows that the interaction of flavonols and transferrin is synergistically driven by enthalpy and entropy. Hydrophobic interaction, electrostatic force and hydrogen bonds are the main force types. Synchronous fluorescence spectroscopy shows that flavonols decrease the hydrophobicity of the microenvironment around tryptophan (Trp) and have no effect on the microenvironment around tyrosine (Tyr). UV-vis and CD spectra show that the interaction between transferrin and flavonols leads to the loosening and unfolding of transferrin backbone. The increase of β-sheet is accompanied by the decrease of α-helix and β-turn. The specific binding sites of flavonols to transferrin are confirmed by molecular docking. Molecular dynamic simulation suggests that the transferrin-flavonols docked complex is stable throughout the simulation trajectory.
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Affiliation(s)
- Xiangrong Li
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Linyu Han
- Grade 2020, Clinical Medicine, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Zhizhi Song
- Grade 2020, Clinical Medicine, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Ruonan Xu
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Lixia Wang
- College of Science, Henan Agricultural University, Zhengzhou, Henan 450002, PR China
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13
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Behjati Hosseini S, Asadzadeh-Lotfabad M, Erfani M, Babayan-Mashhadi F, Mokaberi P, Amiri-Tehranizadeh Z, Saberi MR, Chamani J. A novel vision into the binding behavior of curcumin with human serum albumin-holo transferrin complex: molecular dynamic simulation and multi-spectroscopic perspectives. J Biomol Struct Dyn 2022; 40:11154-11172. [PMID: 34328379 DOI: 10.1080/07391102.2021.1957713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In this work, we investigated the simultaneous binding of curcumin (CUR) to human serum albumin (HSA) and human-holo transferrin (HTF) in the roles of binary and ternary systems. The binding affinity and binding site of protein-protein interaction were studied by the methods of multiple spectroscopic and molecular dynamics (MD) simulation. According to the results, the measurements for binding constant of HSA-CUR, HTF-CUR and (HSA-HTF) CUR complexes were observed to be 1.51 × 105, 7.93 × 104 and 1.44 × 105 M-1 respectively. Thermodynamic parameters were considered to be set at three varying temperatures including 298, 303, and 308 K. In conformity to the negative values of ΔH0 and ΔS0 the significant roles of hydrogen binding and van der-Waals forces in the formation of complexes are quiet evident. The binding distance between Trp residues of HSA, HTF and HSA-HTF upon interaction with CUR, were acquired by applying the Förster's theory of non-radioactive energy transfer and reported to be 2.04 nm, 1.78 nm, and 1.86 nm, respectively. In accordance with the conductometry and Resonance light scattering (RLS) results, there were different interaction behaviors among the HSA-HTF complex and CUR in ternary system when being compared to the outcomes of binary system. The secondary structure of all three cases increased as the CUR concentration was intensified, which confirmed the inducement of proteins conformational changes through the application of circular dichroism (CD) technique. The experimental results that were acquired throughout the binding of HSA-CUR, HTF-CUR, and (HSA-HTF) CUR complexes were approved by molecular modeling.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Soroush Behjati Hosseini
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | - Maryam Erfani
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Fatemeh Babayan-Mashhadi
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Parisa Mokaberi
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Zeinab Amiri-Tehranizadeh
- Department of Medical Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Reza Saberi
- Department of Medical Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Jamshidkhan Chamani
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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14
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He F, Wang J, Yuan D, Liu Y, Liu R, Zong W. Ferric ions release from iron-binding protein: Interaction between acrylamide and human serum transferrin and the underlying mechanisms of their binding. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157583. [PMID: 35882343 DOI: 10.1016/j.scitotenv.2022.157583] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/17/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Acrylamide (ACR) is a surprisingly common chemical due to its widespread use in industry and various other applications. However, its toxicity is a matter of grave concern for public health. Even worse, ACR is frequently detected in numerous fried or baked carbohydrate-rich foods due to the Maillard browning reaction. Herein, this study intends to delineate the underlying molecular mechanisms of Fe ions released from iron-binding protein transferrin (TF) after acrylamide binding by combining multiple methods, including multiple complementary spectroscopic techniques (UV-Vis, fluorescence, and circular dichroism spectroscopy), isothermal titration calorimetry, ICP-MS measurements, and modeling simulations. Results indicated that free Fe was released from TF only under high-dose ACR exposure (>100 μM). Acrylamide binding induced the loosening and unfolding of the backbone and polypeptide chain and destroyed the secondary structure of TF, thereby leading to protein misfolding and denaturation of TF and forming a larger size of TF agglomerates. Of which, H-binding and van der Waals force are the primary driving force during the binding interaction between ACR and TF. Further modeling simulations illustrated that ACR prefers to bind to the hinge region connecting the C-lobe and N-lobe, after that it attaches to the Fe binding sites of this protein, which is the cause of free Fe release from TF. Moreover, ACR interacted with the critical fluorophore residues (Tyr, Trp, and Phe) in the binding pocket, which might explain such a phenomenon of fluorescence sensitization. The two binding sites (Site 2 and Site 3) located around the Fe (III) ions with low-energy conformations are more suitable for ACR binding. Collectively, our study demonstrated that the loss of iron in TF caused by acrylamide-induced structural and conformational changes of transferrin.
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Affiliation(s)
- Falin He
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Jinhu Wang
- College of Chemistry, Chemical Engineering and Material Science, Zaozhuang University, Zaozhuang, Shandong 277160, PR China
| | - Dong Yuan
- Department of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250013, PR China.
| | - Yang Liu
- Department of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250013, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong 250014, PR China
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15
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Arif A, Hashmi MA, Salam S, Younus H, Mahmood R. Interaction of the insecticide bioallethrin with human hemoglobin: biophysical, in silico and enzymatic studies. J Biomol Struct Dyn 2022:1-12. [PMID: 35950518 DOI: 10.1080/07391102.2022.2109756] [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: 10/15/2022]
Abstract
Bioallethrin is an insecticide that is widely used in households resulting in human exposure. Bioallethrin is cytotoxic to human erythrocytes. Here we have studied the interaction of bioallethrin with human hemoglobin (Hb) using in silico and biophysical approaches. Incubation of Hb (5 μM) with bioallethrin (1-50 µM) led to increase in absorbance at 280 nm while the Soret band at 406 nm was slightly reduced. The intrinsic fluorescence of Hb was enhanced with the appearance of a new peak around 305 nm. Synchronous fluorescence showed that the binding of bioallethrin to Hb mainly affects the tyrosine microenvironment. The structural changes in Hb were confirmed with a significant shift in CD spectra and about 25% loss of α-helix. Molecular docking and visualisation through Discovery studio confirmed the formation of Hb-bioallethrin complex with a binding energy of -7.3 kcal/mol. Molecular simulation showed the stability and energy dynamics of the binding reaction between bioallethrin and Hb. The structural changes induced by bioallethrin led to inhibition of the esterase activity of Hb. In conclusion, this study shows that bioallethrin forms a stable complex with human Hb which may lead to loss of Hb function in the body.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amin Arif
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Md Amiruddin Hashmi
- Department of Biotechnology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Samreen Salam
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Hina Younus
- Department of Biotechnology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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16
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Hassasi S, Hassaninejad-Darzi SK. Electro-Oxidation of Tamoxifen on Nanozeolite NaY Modified Carbon Paste Electrode. RUSS J ELECTROCHEM+ 2022. [DOI: 10.1134/s1023193522080067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Chen F, Zhou L, Zhou B, Zhang S, Ma X, Zhou H, Tuo X. Elucidation on the interaction between transferrin and ascorbic acid: A study based on spectroscopic analysis, molecular docking technology, and antioxidant evaluation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Morais TS, Marques F, Madeira PJA, Robalo MP, Garcia MH. Design and Anticancer Properties of New Water-Soluble Ruthenium–Cyclopentadienyl Complexes. Pharmaceuticals (Basel) 2022; 15:ph15070862. [PMID: 35890160 PMCID: PMC9321894 DOI: 10.3390/ph15070862] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022] Open
Abstract
Ruthenium complexes are emerging as one of the most promising classes of complexes for cancer therapy. However, their limited aqueous solubility may be the major limitation to their potential clinical application. In view and to contribute to the progress of this field, eight new water-soluble Ru(II) organometallic complexes of general formula [RuCp(mTPPMS)n(L)] [CF3SO3], where mTPPMS = diphenylphosphane-benzene-3-sulfonate, for n = 2, L is an imidazole-based ligand (imidazole, 1-benzylimidazole, 1-butylimidazole, (1-(3-aminopropyl)imidazole), and (1-(4-methoxyphenyl)imidazole)), and for n = 1, L is a bidentate heteroaromatic ligand (2-benzoylpyridine, (di(2-pyridyl)ketone), and (1,2-(2-pyridyl)benzo-[b]thiophene)) were synthesized and characterized. The new complexes were fully characterized by NMR, FT-IR, UV–vis., ESI-HRMS, and cyclic voltammetry, which confirmed all the proposed molecular structures. The antiproliferative potential of the new Ru(II) complexes was evaluated on MDAMB231 breast adenocarcinoma, A2780 ovarian carcinoma, and HT29 colorectal adenocarcinoma cell lines, showing micromolar (MDAMB231 and HT29) and submicromolar (A2780) IC50 values. The interaction of complex 6 with human serum albumin (HSA) and fatty-acid-free human serum albumin (HSAfaf) was evaluated by fluorescence spectroscopy techniques, and the results revealed that the ruthenium complex strongly quenches the intrinsic fluorescence of albumin in both cases.
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Affiliation(s)
- Tânia S. Morais
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Correspondence: (T.S.M.); (M.H.G.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Lisboa, Portugal;
| | | | - Maria Paula Robalo
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Maria Helena Garcia
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Correspondence: (T.S.M.); (M.H.G.)
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19
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Gong G, Qian W, Zhang L, Jia J, Xie J, Zhu Q, Liu W, Tu P, Gao M, Zhang L, Tang H, Su H, Wei K, Zhou C, Wang KK, Zhang Z, Pan Q. A curcumin-induced assembly of a transferrin nanocarrier system and its antitumor effect. Colloids Surf B Biointerfaces 2022; 217:112613. [DOI: 10.1016/j.colsurfb.2022.112613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 10/17/2022]
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20
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Liu Y, Zhu J, Yu J, Chen X, Zhang S, Cai Y, Li L. Curcumin as a mild natural α‐glucosidase inhibitor: a study on its mechanism
in vitro. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15433] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yujia Liu
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Jie Zhu
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Jiamei Yu
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Xu Chen
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Shuyan Zhang
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Yanxue Cai
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
| | - Lin Li
- Key Laboratory of Healthy Food Development and Nutrition Regulation of China National Light Industry School of Chemical Engineering and Energy Technology Dongguan University of Technology Dongguan 523808 China
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21
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Zhou R, Yang C, Xie T, Zhang J, Wang C, Ma Z, Zhang L. Angiotensin-Converting Enzyme (ACE) Inhibitory Activity and Mechanism Analysis of N-(1-Deoxy-d-fructos-1-yl)-histidine (Fru-His), a Food-Derived Amadori Compound. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2179-2186. [PMID: 35148100 DOI: 10.1021/acs.jafc.1c05583] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
N-(1-Deoxy-d-fructos-1-yl)-histidine (Fru-His), one of the Amadori compounds, widely presents in processed foods, and its potential functional activities have attracted extensive attention in recent years. In this work, the angiotensin-converting enzyme (ACE) inhibitory activity and mechanism of Fru-His were investigated. The IC50 value of Fru-His was 0.150 ± 0.019 mM, and there was no obvious degradation of Fru-His after digestion simulation, showing that Fru-His has good ACE inhibition and digestive stability. Fru-His was a competitive inhibitor according to the enzyme inhibition kinetic analysis. The interaction between ACE and Fru-His occurred spontaneously mainly through hydrogen bonding, and the process was accompanied by fluorescence quenching and the alteration of the secondary structure of ACE. The molecular docking data supported the above results. Fru-His was attached to ACE's S1 active pocket through hydrogen bonds and interacted with zinc ions in active sites. The present study demonstrates that food-derived Fru-His has the potential to relieve hypertension.
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Affiliation(s)
- Renjie Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
| | - Cheng Yang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
| | - Ting Xie
- Technical Center of Hefei Customs, Hefei 230041, Anhui, P. R. China
| | - Jian Zhang
- College of Food, Shihezi University, Beisi Road, Shihezi 832003, Xinjiang, P. R. China
| | - Chenqiang Wang
- Technology Center, Xinjiang Guannong Fruit & Antler Group Co., Ltd., Korla City 841000, Xinjiang, P. R. China
| | - Ziqiang Ma
- Technology Center, Xinjiang Guannong Fruit & Antler Group Co., Ltd., Korla City 841000, Xinjiang, P. R. China
| | - Lianfu Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- College of Food, Shihezi University, Beisi Road, Shihezi 832003, Xinjiang, P. R. China
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22
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Farhadian S, Hashemi-Shahraki F, Amirifar S, Asadpour S, Shareghi B, Heidari E, Shakerian B, Rafatifard M, Firooz AR. Malachite Green, the hazardous materials that can bind to Apo-transferrin and change the iron transfer. Int J Biol Macromol 2022; 194:790-799. [PMID: 34838577 DOI: 10.1016/j.ijbiomac.2021.11.126] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 02/08/2023]
Abstract
Different groups of synthetic dyes might lead to environmental pollution. The binding affinity among hazardous materials with biomolecules necessitates a detailed understanding of their binding properties. Malachite Green might induce a change in the iron transfer by Apo-transferrin. Spectroscopic studies showed malachite green oxalate (MGO) could form the apo-transferrin-MGO complex and change the Accessible Surface Area (ASA) of the key amino acids for iron transfer. According to the ASA results the accessible surface area of Tyrosine, Aspartate, and Histidine of apo-transferrin significantly were changed, which can be considered as a convincing reason for changing the iron transfer. Moreover, based on the fluorescence data MGO could quench the fluorescence intensity of apo-transferrin in a static quenching mechanism. The experimental and Molecular Dynamic simulation results represented that the binding process led to micro environmental changes, around tryptophan residues and altered the tertiary structure of apo-transferrin. The Circular Dichroism (CD) spectra result represented a decrease in the amount of the α-Helix, as well as, increase in the β-sheet volumes of the apo-transferrin structure. Moreover, FTIR spectroscopy results showed a hypochromic shift in the peaks of amide I and II. Molecular docking and MD simulation confirmed all the computational findings.
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Affiliation(s)
- Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
| | - Fatemeh Hashemi-Shahraki
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Sogand Amirifar
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Saeid Asadpour
- Department of Chemistry, Faculty of Sciences, Shahrekord University, P. O. Box 115, Shahrekord, Iran.
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box.115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Ehsan Heidari
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Behnam Shakerian
- Cardiovascular Diseases Research Department, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mohammad Rafatifard
- Exercise Science/Physiology, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Ali Reza Firooz
- Department of Chemistry, University of Isfahan, Isfahan, Iran
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23
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Evaluation of interactions between food colorant, tartrazine, and Apo-transferrin using spectroscopic analysis and docking simulation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116715] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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24
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Santos FC, Costa PJ, Garcia MH, Morais TS. Binding of RuCp complexes with human apo-transferrin: fluorescence spectroscopy and molecular docking methods. Biometals 2021; 34:1029-1042. [PMID: 34155581 DOI: 10.1007/s10534-021-00325-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 06/14/2021] [Indexed: 11/25/2022]
Abstract
The interaction between human serum transferrin (hTf) and three promising organometallic Ru (II)- (η5-C5H5) derived complexes, that have already shown strong in vitro cytotoxicity towards human cancer cell lines, has been investigated using fluorescence spectroscopic techniques. The results suggested that the formation of Ru-hTf systems involves a dynamic collision. The binding process occurs spontaneously (ΔG < 0), mainly driven by hydrophobic interactions. Additional docking studies show that all complexes bind preferably to a specific hydrophobic pocket in the C2-subdomain as already observed for other metal-cyclopentadienyl (MCp) complexes and are in agreement with the experimental results. With these studies we hope to contribute to the understanding of the mechanism of action of these promising cytotoxic agents, thus providing clues for a more rational design.
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Affiliation(s)
- Filipa C Santos
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Paulo J Costa
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, 1749-016, Lisboa, Portugal
| | - M Helena Garcia
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Tânia S Morais
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.
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Kaushal D, Lal H, Ansari SS, Naqvi S. Effect of local anesthetic drug procaine hydrochloride on the conformational stability of bovine hemoglobin: Multi-spectroscopic and computational approaches. J Biomol Struct Dyn 2021; 40:8938-8948. [PMID: 33970817 DOI: 10.1080/07391102.2021.1920465] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The interaction between bovine hemoglobin (BHb) and local anesthetic drug procaine hydrochloride (PCH) was examined by spectroscopic and computational studies. Intrinsic fluorescence analysis explored the ground-state complex formation in the binding of PCH with BHb through static quenching mechanism. The binding constants (Kb) are 29.38 × 103, 22.54 × 103 and 17.99 × 103 M-1 at 288, 298 and 308 K, respectively, and the ratio of BHb:PCH was 1:1 in the interaction mechanism of PCH and BHb. The acquired thermodynamic parameters (ΔH0, ΔG0 and ΔS0) demonstrated that interaction mechanism is spontaneous and enthalpy driven. The van der Waals forces and hydrogen bonding have been played a predominant role in the binding mechanism. The UV-vis spectroscopy validates the ground-state complexation between PCH and BHb and the binding constant (Kb) has been evaluated utilizing Benesi-Hildebrand equation. Fluorescence resonance energy transfer (FRET) results have demonstrated that the distance between donor (BHb) and acceptor (PCH) is very short (2.34 nm) suggesting a significant probability to energy transfer from BHb to PCH. Synchronous fluorescence results revealed that the alteration in the micro-environment of Tyrosine (Tyr) is more than tryptophan (Trp) residues suggesting that PCH molecule is close to Tyr residue. The secondary structure alterations were confirmed by CD, 3-D fluorescence and FT-IR spectroscopic measurements. Moreover, computational analyses further corroborated that PCH molecules are closer to Tyr residues as compared to Trp residues of BHb during the interaction process. The BHb-PCH complexes may contribute to a deeper understanding of the metabolism of drug, blood circulation process and may help to illustrate the relationship between functions and structure of BHb.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Deepak Kaushal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Hira Lal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | | | - Saeeda Naqvi
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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26
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Śliwińska-Hill U. Spectroscopic studies of simultaneous binding of cyclophosphamide and imatinib mesylate to human holo-transferrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119538. [PMID: 33582440 DOI: 10.1016/j.saa.2021.119538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/16/2021] [Accepted: 01/23/2021] [Indexed: 06/12/2023]
Abstract
The interactions of proteins with drugs are very important from a pharmacological point of view. Holo-transferrin is a blood-plasma glycoprotein whose main function is iron-binding and the transport of other ligands. Additionally, the protein is only transferrin-form recognized by TfR1 and TfR2 receptors at the surface of rapidly proliferating malignant cells. Imatinib mesylate is a tyrosine-kinase inhibitor mainly used in the treatment of blood cancers, frequently in multidrug therapy with cyclophosphamide. In this study the effect of cyclophosphamide on the interaction of imatinib mesylate with human holo-transferrin has been investigated. Using spectroscopic techniques such as fluorescence, circular dichroism, ultraviolet-visible and electrophoretic light scattering additive parameters, system stability and the effect of the ligands on the protein conformation at varying pH values have been defined. Calculated quenching constants are in the order of 2 × 104 M-1 and the type of interaction depends on the reaction medium. Under physiological conditions binding constant is 1.329 × 106 M-1 whereas in an environment similar to that of cancer cells the constant is significantly lower, Ka = 6.060 × 104 M-1. N values are approximate to 1 in all cases. Moreover, some changes are observed in the α-helical structure of the protein after interaction with the drugs and the presence of cyclophosphamide slightly stabilizes the protein secondary structure. All collected data proves the effect of cyclophosphamide on the interaction between imatinib mesylate and human holo-transferrin. It is of great clinical interest due to anticancer, multidrug therapies including both imatinib mesylate and cyclophosphamide.
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Affiliation(s)
- Urszula Śliwińska-Hill
- Department of Analytical Chemistry, Faculty of Pharmacy, Wrocław Medical University, Borowska 211A, 50-566 Wrocław, Poland.
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27
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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.
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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
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Prajapati KP, Panigrahi A, Purohit S, Ansari M, Dubey K, Behera RK, Anand BG, Kar K. Osmoprotectant Coated Thermostable Gold Nanoparticles Efficiently Restrict Temperature-Induced Amyloid Aggregation of Insulin. J Phys Chem Lett 2021; 12:1803-1813. [PMID: 33577334 DOI: 10.1021/acs.jpclett.0c03492] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Naturally occurring osmoprotectants are known to prevent aggregation of proteins under various stress factors including extreme pH and elevated temperature conditions. Here, we synthesized gold nanoparticles coated with selected osmolytes (proline, hydroxyproline, and glycine) and examined their effect on temperature-induced amyloid-formation of insulin hormone. These uniform, thermostable, and hemocompatible gold nanoparticles were capable of inhibiting both spontaneous and seed-induced amyloid aggregation of insulin. Both quenching and docking experiments suggest a direct interaction between the osmoprotectant-coated nanoparticles and aggregation-prone hydrophobic stretches of insulin. Circular-dichroism results confirmed the retention of insulin's native structure in the presence of these nanoparticles. Unlike the indirect solvent-mediated effect of free osmolytes, the inhibition effect of osmolyte-coated gold nanoparticles was observed to be mediated through their direct interaction with insulin. The results signify the protection of the exposed aggregation-prone domains of insulin from temperature-induced self-assembly through osmoprotectant-coated nanoparticles, and such effect may inspire the development of osmolyte-based antiamyloid nanoformulations.
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Affiliation(s)
- Kailash P Prajapati
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ayoushna Panigrahi
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sampreeta Purohit
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Masihuzzaman Ansari
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Kriti Dubey
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rajendra Kumar Behera
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Bibin G Anand
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Karunakar Kar
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Host assisted molecular recognition by human serum albumin: Study of molecular recognition controlled protein/drug mimic binding in a microfluidic channel. Int J Biol Macromol 2021; 176:137-144. [PMID: 33548310 DOI: 10.1016/j.ijbiomac.2021.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 11/21/2022]
Abstract
Human serum albumin (HSA) plays a pivotal role in drug release from its delivery vehicles such as cyclodextrins (CDs) by binding to the drugs. Here molecular recognition and binding of a drug mimic (CD1) to HSA have been explored in a microfluidic channel when CD1 is encapsulated in β-cyclodextrin (βCD) and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TRIMEB), respectively, to investigate whether change of the host vehicle modulate the rate of drug binding to the serum protein. Molecular recognition of βCD encapsulated CD1 by HSA occurs by the conformational selection fit mechanism leading to rapid binding of CD1 to HSA (k1 ~ 700 s-11) when the βCD/CD1 complex interacts with HSA. In contrary, HSA recognizes CD1 encapsulated in TRIMEB by an induced fit mechanism leading to a significantly slower binding rate (k1 ~ 20.8 s-1) of the drug mimic to the protein. Thus molecular recognition controls the rate of HSA binding by CD1 which in turn modulates the rate of delivery of the drug mimic from its macrocyclic hosts. The remarkable change in the molecular recognition pathway of CD1 by HSA, upon change of the host from βCD to TRIMEB, originates from significantly different conformational flexibility of the host/drug mimic complexes.
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30
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Munteanu A, Musat MG, Mihaila M, Badea M, Olar R, Nitulescu GM, Rădulescu FȘ, Brasoveanu LI, Uivarosi V. New heteroleptic lanthanide complexes as multimodal drugs: Cytotoxicity studies, apoptosis, cell cycle analysis, DNA interactions, and protein binding. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexandra‐Cristina Munteanu
- Department of General and Inorganic Chemistry, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Mihaela Georgiana Musat
- Department of Biochemistry, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Mirela Mihaila
- Center of Immunology Stefan S. Nicolau Institute of Virology Bucharest Romania
| | - Mihaela Badea
- Department of Inorganic Chemistry, Faculty of Chemistry University of Bucharest Bucharest Romania
| | - Rodica Olar
- Department of Inorganic Chemistry, Faculty of Chemistry University of Bucharest Bucharest Romania
| | - George Mihai Nitulescu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | - Flavian Ștefan Rădulescu
- Center for Drug Sciences, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
| | | | - Valentina Uivarosi
- Department of General and Inorganic Chemistry, Faculty of Pharmacy Carol Davila University of Medicine and Pharmacy Bucharest Romania
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31
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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.
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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.
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32
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Fernandes MA, Hanck-Silva G, Baveloni FG, Oshiro Junior JA, de Lima FT, Eloy JO, Chorilli M. A Review of Properties, Delivery Systems and Analytical Methods for the Characterization of Monomeric Glycoprotein Transferrin. Crit Rev Anal Chem 2020; 51:399-410. [DOI: 10.1080/10408347.2020.1743639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mariza Aires Fernandes
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Gilmar Hanck-Silva
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Franciele Garcia Baveloni
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Felipe Tita de Lima
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Josimar O. Eloy
- College of Pharmacy, Dentistry and Nursing, Federal University of Ceara (UFC), Fortaleza, Ceará, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
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33
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Garcia PF, Coronel Arrechea C, Velo A, Riva J, Yudi LM, Argüello GA. Interaction of polypyridyl Cr(III) complexes with bovine serum albumin. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2020; 49:125-132. [PMID: 31927653 DOI: 10.1007/s00249-019-01416-w] [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: 06/07/2019] [Revised: 10/28/2019] [Accepted: 12/16/2019] [Indexed: 06/10/2023]
Abstract
We report a detailed investigation of the interaction of Cr(NN)33+ with bovine serum albumin (BSA), an important protein for the transport of drugs in blood plasma which allows us to understand further the role of Cr(NN)33+ as a sensitizer in photodynamic therapy (PDT). Chromium(III) complexes, Cr(5Cl-phen)33+, Cr(5Me-phen)33+ and Cr(5Ph-phen)33+ (where Cl = chlorine, Me = methyl and Ph = phenyl are substituents in position 5 of the phen = 1,10-phenanthroline bidentate ligand), were used for the present study. The interactions of BSA with Cr(NN)33+ were assessed employing fluorescence spectroscopy and UV-Vis absorption spectroscopy; in addition electrochemical experiments carried out at a liquid/liquid interface gave insight into the relative hydrophobicities of the complexes. We found that chromium complexes bind strongly with bovine serum albumins (BSA) with intrinsic binding constants, Kb, of (3.33 ± 0.08) × 105 M-1, (5.92 ± 0.08) × 105 M-1 and (1.64 ± 0.05) × 105 M-1 at 300.3 K. Analysis of the thermodynamic parameters ΔG, ΔH, and ΔS indicated that hydrophobic interactions played a major role in all the BSA-Cr(NN)33+ association processes. The binding distances and transfer efficiencies for BSA binding reactions were calculated according to the Förster theory of non-radiation energy transfer giving distance (r) of 2.63 nm, 2.94 nm and 3.00 nm for 5Clphen, 5Mephen and 5Ph phenanthroline complexes, respectively. All these experimental results indicate that Cr(NN)33+ binds to serum albumins, by which these proteins could act as carriers of this complex for further applications in PDT.
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Affiliation(s)
- Pablo F Garcia
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina
| | - Consuelo Coronel Arrechea
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina
| | - Alejandra Velo
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina
| | - Julieta Riva
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina
| | - Lidia M Yudi
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina
| | - Gerardo A Argüello
- Facultad de Ciencias Químicas, Departamento de Fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones en Fisicoquímica de Córdoba, INFIQC, Córdoba, Argentina.
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Jesna KK, Ilanchelian M. Gold nanorods–trypsin biocorona: a novel nano composite for in vitro cytotoxic activity towards MCF-7 and A-549 cancer cells. NEW J CHEM 2020. [DOI: 10.1039/d0nj03299a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In the present work, we have synthesized cetyltrimethyl ammonium bromide (CTAB) capped gold nanorods (Au NRs) to evaluate apparent binding affinities for the adsorption of trypsin (TRP).
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35
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Probing conformational changes of monomeric transthyretin with second derivative fluorescence. Sci Rep 2019; 9:10988. [PMID: 31358790 PMCID: PMC6662758 DOI: 10.1038/s41598-019-47230-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 07/02/2019] [Indexed: 02/06/2023] Open
Abstract
We have studied the intrinsic fluorescence spectra of a monomeric variant of human transthyretin (M-TTR), a protein involved in the transport of the thyroid hormone and retinol and associated with various forms of amyloidosis, extending our analysis to the second order derivative of the spectra. This procedure allowed to identify three peaks readily assigned to Trp41, as the three peaks were also visible in a mutant lacking the other tryptophan (Trp79) and had similar FRET efficiency values with an acceptor molecule positioned at position 10. The wavelength values of the three peaks and their susceptibility to acrylamide quenching revealed that the three corresponding conformers experience different solvent-exposure, polarity of the environment and flexibility. We could monitor the three peaks individually in urea-unfolding and pH-unfolding curves. This revealed changes in the distribution of the corresponding conformers, indicating conformational changes and alterations of the dynamics of the microenvironment that surrounds the associated tryptophan residue in such transitions, but also native-like conformers of such residues in unfolded states. We also found that the amyloidogenic state adopted by M-TTR at mildly low pH has a structural and dynamical microenvironment surrounding Trp41 indistinguishable from that of the fully folded and soluble state at neutral pH.
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36
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Mousavi SF, Fatemi MH. Probing the binding mechanism of capecitabine to human serum albumin using spectrometric methods, molecular modeling, and chemometrics approach. Bioorg Chem 2019; 90:103037. [PMID: 31212179 DOI: 10.1016/j.bioorg.2019.103037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 05/27/2019] [Accepted: 06/03/2019] [Indexed: 12/11/2022]
Abstract
Capecitabine as a prodrug of 5-Fluorouracil plays an important role in the treatment of breast and gastrointestinal cancers. Herein, in view of the importance of this drug in chemotherapy, interaction mechanism between Capecitabine (CAP) and human serum albumin (HSA) as a major transport protein in the blood circulatory system has been investigated by using a combination of spectroscopic and molecular modeling methods. The fluorescence spectroscopic results revealed that capecitabine could effectively quench the intrinsic fluorescence of HSA through a static quenching mechanism. Evaluation of the thermodynamic parameters suggested that the binding process was spontaneous while hydrogen bonds and van der Waals forces played a major role in this interaction. The value of the binding constant (Kb = 1.820 × 104) suggested a moderate binding affinity between CAP and HSA which implies its easy diffusion from the circulatory system to the target tissue. The efficiency of energy transfer and the binding distance between the donor (HSA) and acceptor (CAP) were determined according to forster theory of nonradiation energy transfer as 0.410 and 4.135 nm, respectively. Furthermore, UV-Vis spectroscopic results confirmed that the interaction was occurred between HSA and CAP and caused conformational and micro-environmental changes of HSA during the interaction. Multivariate curve resolution-alternating least square (MCR-ALS) methodology as an efficient chemometric tool was used to separate the overlapped spectra of the species. The MCR-ALS result was exploited to estimate the stoichiometry of interaction and to provide concentration and structural information about HSA-CAP interactions. Molecular docking studies suggested that CAP binds mainly to the subdomain IIA of HSA, which were compatible with those obtained by experimental data. Finally, molecular dynamics simulation (MD) was performed on the best docked complex by considering the permanence and flexibility of HSA-CAP complex in the binding site. MD result showed that CAP could steadily bind to HSA in the site I based on the formation of hydrogen bond and π-π stacking interaction in addition to hydrophobic force.
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Affiliation(s)
- S Fatemeh Mousavi
- Chemometrics Laboratory, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
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37
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The mechanism of interactions between flavan-3-ols against a-glucosidase and their in vivo antihyperglycemic effects. Bioorg Chem 2019; 85:364-372. [DOI: 10.1016/j.bioorg.2018.12.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/26/2018] [Accepted: 12/28/2018] [Indexed: 12/21/2022]
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38
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Makarska-Bialokoz M, Lipke A. Study of the binding interactions between uric acid and bovine serum albumin using multiple spectroscopic techniques. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Zhang B, Li M, Wang Q, Zhai A. Exploring adverse effects of puerarin on catalase by multiple spectroscopic investigations and docking studies in vitro. J Biochem Mol Toxicol 2019; 33:e22296. [PMID: 30672062 DOI: 10.1002/jbt.22296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 12/26/2018] [Accepted: 01/04/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Bai Zhang
- Department of PharmacyThe Fifth People's Hospital of Jinan China
| | - Ming Li
- Department of Pharmacy, Jinan Vocational College of Nursing, Jinan China
| | - Qi Wang
- Department of PharmacyThe Fifth People's Hospital of Jinan China
| | - Aihua Zhai
- Department of PharmacyThe Fifth People's Hospital of Jinan China
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40
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Lang Y, Shi L, Lan L, Zhao Z, Yang Q, Chen L, Sun X, Tang Y, Zhang X. A Spectroscopic Study of the Interaction between Cyanine Dyes with Different Skeleton Structures and Transferrin. ChemistrySelect 2018. [DOI: 10.1002/slct.201802649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yunhe Lang
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
| | - Lei Shi
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
| | - Ling Lan
- Institute of ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
| | - Zheng Zhao
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
| | - Qianfan Yang
- College of ChemistrySichuan University Chengdu 610065 P. R. China
| | - Lei Chen
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
| | - Xiaoran Sun
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
| | - Yalin Tang
- Institute of ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
| | - Xiufeng Zhang
- College of Chemical EngineeringNorth China University of Science and Technology Tangshan 063210 P. R. China
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41
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Wang S, Qu F, Han W, You J. A resonance Rayleigh scattering sensor for sensitive differentiation of telomere DNA length and monitoring special motifs (G-quadruplex and i-motif) based on the Ag nanoclusters and NAND logic gate responding to chemical input signals. J Nanobiotechnology 2018; 16:78. [PMID: 30301461 PMCID: PMC6176526 DOI: 10.1186/s12951-018-0407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 10/03/2018] [Indexed: 12/04/2022] Open
Abstract
Background Differentiation of telomere length is of vital importance because telomere length is closely related with several deadly diseases such as cancer. Additionally, G-quadruplex and i-motif formation in telomeric DNA have been shown to act as a negative regulator of telomere elongation by telomerase in vivo and are considered as an attractive drug target for cancer chemotherapy. Results In this assay, Ag nanoclusters templated by hyperbranched polyethyleneimine (PEI–Ag NCs) are designed as a new novel resonance Rayleigh scattering (RRS) probe for sensitive differentiation of telomere length and monitoring special motifs (G-quadruplex and i-motif). In this assay, free PEI–Ag NC probe or DNA sequence alone emits low intensities of RRS, while the formation of PEI–Ag NCs/DNA complexes yields greatly enhanced RRS signals; however, when PEI–Ag NCs react with G-quadruplex or i-motif, the intensities of RRS exhibit slight changes. At the same concentration, the enhancement of RRS signal is directly proportional to the length of telomere, and the sensitivity of 64 bases is the highest with the linear range of 0.3–50 nM (limit of detection 0.12 nM). On the other hand, due to the conversion of telomere DNA molecules among multiple surrounding conditions, a DNA logic gate is developed on the basis of two chemical input signals (K+ and H+) and a change in RRS intensity as the output signal. Conclusion Our results indicate that PEI–Ag NCs can serve as a novel RRS probe to identify DNA length and monitor G-quadruplex/i-motif through the different increasing degrees of RRS intensity. Meanwhile, the novel attributes of the nanoprobe stand superior to those involving dyes or labeled DNA because of no chemical modification, low cost, green, and high efficiency. Electronic supplementary material The online version of this article (10.1186/s12951-018-0407-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shuai Wang
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.,The Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan, 250100, Shandong, China
| | - Fei Qu
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.
| | - Wenli Han
- Laboratory Animal Center, Chongqing Medical University, Chongqing, China
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.,Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810001, China
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42
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Munteanu AC, Badea M, Olar R, Silvestro L, Mihaila M, Brasoveanu LI, Musat MG, Andries A, Uivarosi V. Cytotoxicity studies, DNA interaction and protein binding of new Al (III), Ga (III) and In (III) complexes with 5-hydroxyflavone. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4579] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Alexandra-Cristina Munteanu
- Department of General and Inorganic Chemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
| | - Mihaela Badea
- Department of Inorganic Chemistry, Faculty of Chemistry; University of Bucharest; 90-92 Panduri Str Bucharest 050663 Romania
| | - Rodica Olar
- Department of Inorganic Chemistry, Faculty of Chemistry; University of Bucharest; 90-92 Panduri Str Bucharest 050663 Romania
| | - Luigi Silvestro
- PharmaServ. International SRL; 52 Sabinelor Str Bucharest 050853 Romania
| | - Mirela Mihaila
- Center of Immunology; Stefan S. Nicolau Institute of Virology; 285 Mihai Bravu Ave Bucharest 030304 Romania
| | - Lorelei Irina Brasoveanu
- Center of Immunology; Stefan S. Nicolau Institute of Virology; 285 Mihai Bravu Ave Bucharest 030304 Romania
| | - Mihaela Georgiana Musat
- Department of Biochemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
| | - Adrian Andries
- Department of Industrial Drugs and Pharmaceutical Biotechnology, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str. Bucharest 020956 Romania
| | - Valentina Uivarosi
- Department of General and Inorganic Chemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
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43
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Saleh GA, Abdel-aal FA, Abbas NS. Simultaneous TLC-densitometric determination of tamoxifen citrate and medroxyprogesterone acetate and UV-degradation kinetic study of medroxyprogesterone acetate. Biomed Chromatogr 2018; 32:e4366. [DOI: 10.1002/bmc.4366] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/08/2018] [Accepted: 08/10/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Gamal A. Saleh
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy; Assiut University; Assiut Egypt
| | - Fatma A.M. Abdel-aal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy; Assiut University; Assiut Egypt
| | - Noha S. Abbas
- Pharmacist in the General Eman Hospital; Assiut Egypt
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44
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Esmaielzade Rostami M, Gorji B, Zadmard R. Calix[4]arene-based Multifunctional Ligand as Potent Protein Binding Agent. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3299] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Banafsheh Gorji
- Department of Chemistry, South Tehran Branch; Islamic Azad University; Tehran Iran
| | - Reza Zadmard
- Department of Organic Chemistry; Chemistry and Chemical Engineering Research Center of Iran (CCERCI); Post Office Box 14335-186 Tehran Iran
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45
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Zhao L, Hu S, Meng Q, Xu M, Zhang H, Liu R. The binding interaction between cadmium-based, aqueous-phase quantum dots with Candida rugosa
lipase. J Mol Recognit 2018; 31:e2712. [DOI: 10.1002/jmr.2712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/24/2018] [Accepted: 02/18/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Lining Zhao
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Shimeng Hu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Qiwei Meng
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Mengchen Xu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
| | - Hao Zhang
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center; Qilu University of Technology (Shandong Academy of Sciences); Jinan China
| | - Rutao Liu
- School of Environmental Science and Engineering; Shandong University, China-America CRC for Environment & Health, Shandong Province; Jinan P. R. China
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46
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Mahesh K, Priyanka V, Vijai Anand A, Karpagam S. Photophysical and electrochemical investigation of highly conjugated pyridine based diphenylamine materials. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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47
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Moradi N, Ashrafi-Kooshk MR, Chamani J, Shackebaei D, Norouzi F. Separate and simultaneous binding of tamoxifen and estradiol to human serum albumin: Spectroscopic and molecular modeling investigations. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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48
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Zhu M, Sheng Z, Jia Y, Hu D, Liu X, Xia X, Liu C, Wang P, Wang X, Zheng H. Indocyanine Green-holo-Transferrin Nanoassemblies for Tumor-Targeted Dual-Modal Imaging and Photothermal Therapy of Glioma. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39249-39258. [PMID: 29039909 DOI: 10.1021/acsami.7b14076] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Active-targeted cancer imaging and therapy of glioma has attracted much attention in theranostic nanomedicine. As a promising tumor-targeting ligand, holo-transferrin (holo-Tf) has been applied for enhancing delivery of nanotheranostics. However, holo-Tf-based nanoassemblies for active targeting mediated multimodal imaging and therapeutics have not been previously reported. Here, we develop a one-step method for the preparation of holo-Tf-indocyanine green (holo-Tf-ICG) nanoassemblies for fluorescence (FL) and photoacoustic (PA) dual-modal imaging and photothermal therapy (PTT) of glioma. The nanoassemblies are formed by hydrophobic interaction and hydrogen bonds between holo-Tf and ICG, which exhibit excellent active tumor-targeting and high biocompability. The brain tumor with highly expressed Tf receptor can be clearly observed with holo-Tf-ICG nanoassemblies base on FL and PA dual-modal imaging in subcutaneous and orthotopic glioma models. Under the near-infrared laser irradiation, the holo-Tf-ICG nanoassemblies accumulated in tumor regions can efficiently convert laser energy into hyperthermia for tumor ablation. The novel theranostic nanoplatform holds great promise for precision diagnosis and treatment of glioma.
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Affiliation(s)
- Mingting Zhu
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, College of Life Sciences, Shaanxi Normal University , Xi'an 710119, China
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Zonghai Sheng
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Yali Jia
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, College of Life Sciences, Shaanxi Normal University , Xi'an 710119, China
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Dehong Hu
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Xin Liu
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Xianyuan Xia
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Chengbo Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Pan Wang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, College of Life Sciences, Shaanxi Normal University , Xi'an 710119, China
| | - Xiaobing Wang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, College of Life Sciences, Shaanxi Normal University , Xi'an 710119, China
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
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Wang X, Guo XY, Xu L, Liu B, Zhou LL, Wang XF, Wang D, Sun T. Studies on the competitive binding of cleviprex and flavonoids to plasma protein by multi-spectroscopic methods: A prediction of food-drug interaction. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 175:192-199. [DOI: 10.1016/j.jphotobiol.2017.08.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 07/12/2017] [Accepted: 08/27/2017] [Indexed: 02/08/2023]
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50
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Makarska-Bialokoz M. Investigation of the binding affinity in vitamin B12-Bovine serum albumin system using various spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 184:262-269. [PMID: 28528252 DOI: 10.1016/j.saa.2017.05.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 05/28/2023]
Abstract
The binding affinity between vitamin B12 (VitB12) and bovine serum albumin (BSA) has been investigated in aqueous solution at pH=7.4, employing UV-vis absorption and steady-state, synchronous and three-dimensional fluorescence spectra techniques. Representative effects noted for BSA intrinsic fluorescence resulting from the interactions with VitB12 confirm the formation of π-π stacked non-covalent and non-fluorescent complexes in the system VitB12-BSA. All the determined parameters, the binding, fluorescence quenching and bimolecular quenching rate constants (of the order of 104Lmol-1, 103Lmol-1 and 1011Lmol-1s-1, respectively), as well as Förster resonance energy transfer parameters validate the mechanism of static quenching. The interaction with VitB12 induces folding of the polypeptide chains around Trp residues of BSA, resulting in a more hydrophobic surrounding. Presented outcomes suggest that the addition of VitB12 can lead to the more organized BSA conformation and its more folded tertiary structure, what could influence the physiological functions of bovine serum albumin, notably in case of its overuse or abnormal metabolism.
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Affiliation(s)
- Magdalena Makarska-Bialokoz
- Department of Inorganic Chemistry, Maria Curie-Sklodowska University, M. C. Sklodowska Sq. 2, 20-031 Lublin, Poland.
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