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Alamri FB, Sobahi TR, Althagbi HI, Abdel-Lateff A, Alfaifi MY, Mohammed AY, Abdel-Latif E, Alarif WM. Bioactivity and molecular docking of lactones isolated from Centaurea pseudosinaica Czerep. Saudi Pharm J 2023; 31:773-782. [PMID: 37228323 PMCID: PMC10203771 DOI: 10.1016/j.jsps.2023.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 04/17/2023] [Indexed: 05/27/2023] Open
Abstract
Two cytotoxic sesquiterpene lactones, 17-epichlorohyssopifolin A (1) and chlorjanerin (2), and a monoterpene lactone, loliolide (3) were isolated from Centaurea pseudosinaica. The cytotoxicity of the total extract and terpenoids 1-3 were evaluated against three human cancer cells (HepG2, PC-3, and HT-29), along with the human normal primary epidermal keratinocytes (HEKa) cells. With IC50 values ranging between 0.6 ± 0.04 and 5.0 ± 0.61 μg/mL against HepG2; 0.2 ± 0.01 and 11.9 ± 1.31 μg/mL against PC-3, and 0.04 ± 0.013 and 8.9 ± 0.97 μg/mL against HT-29, the total extract, and lactones 1-3 demonstrated cytotoxic effects. Compound 1 displayed the strongest impact on all cancer cells and a slightly safe effect on the normal cells HEKa. Compound 1 caused accumulation of HepG2 and HT-29 cells in G1 phase as displayed cell cycle analysis. On the other hand, the cell distributions were increased in the S phase in PC-3 cells. Furthermore, 1 caused apoptosis in PC-3 and HePG2 cells with 91.50%, and 79.72 %, respectively. A higher fraction of necrotic cells was observed in HT-29 cells amounting to 23.60%. These results suggested that the promising cytotoxicity exhibited by 1 is brought by the apoptosis induction in the cancer cells, which were evaluated. As the compounds showed antiproliferative effect against the HT-29 cells, the docking simulation was performed aiming at determining how they would interact with the EGFR enzyme, whose PDB: 4I23 is considered one of the two distinct wild types of EGFR enzymes. The antibacterial activity results revealed that 3 showed the most remarkable antibacterial effects, especially against the examined Gram-positive bacteria. The total extract exhibited potent activity against all examined bacteria. The total extract showed a potent antifungal effect against two Candida and two Aspergillus pathogens. The antioxidant activity revealed the potency of the total extract and 3 as antioxidant candidates. The obtained results refer to the importance of Centaurea pseudosinaica as a source of potent antiproliferative agents and the whole plant as an antipathogenic and antioxidant agent.
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Affiliation(s)
- Fatima B. Alamri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, PO. Box 80203, Jeddah 21589, Saudi Arabia
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, PO. Box 80203, Jeddah 21589, Saudi Arabia
| | - Hanan I. Althagbi
- Department of Chemistry, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Ahmed Abdel-Lateff
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Mohammed Y. Alfaifi
- Department of Biology, Faculty of Science, King Khalid University, Abha 9004, Saudi Arabia
| | - Ayeda Y. Mohammed
- Department of Chemistry, Faculty of Science and Art, Najran University, Najran 11001, Saudi Arabia
| | - Ehab Abdel-Latif
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, PO. Box 80207, Jeddah 21589, Saudi Arabia
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Mohammed Musthafa T, Snigdha K, Asiri AM, Sobahi TR, Asad M. Green synthesis of Chromonyl Chalcone and Pyrazoline as Potential Antimicrobial Agents - DFT, Molecular Docking and Antimicrobial Studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Faidallah HM, Sobahi TR, Alharbi AS, El-Avia KM. Multi-Step Synthesis of Biologically Active Novel N-Benzyl-3,5-Bis(Arylidene)-Piperidin-4-Ones and Some Derived Bicyclic and Tricyclic Ring Systems as Macromolecules. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2020.1781211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Hassan M. Faidallah
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdulrahman S. Alharbi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khaled M. El-Avia
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Abdul-Hameed ZH, Bawakid NO, Alorfi HS, Sobahi TR, Alburae NA, Abdel-Lateff A, Elbehairi SEI, Alfaifi MY, Alhakamy NA, Alarif WM. Monoterpene Indole Alkaloids from the Aerial Parts of Rhazya stricta Induce Cytotoxicity and Apoptosis in Human Adenocarcinoma Cells. Molecules 2022; 27:molecules27041422. [PMID: 35209210 PMCID: PMC8878105 DOI: 10.3390/molecules27041422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/04/2022] [Accepted: 02/16/2022] [Indexed: 02/04/2023] Open
Abstract
Chromatographic investigation of the aerial parts of the Rhazya stricta (Apocynaceae) resulted in the isolation of two new monoterpene indole alkaloids, 6-nor-antirhine-N1-methyl (1) and razyamide (2), along with six known compounds, eburenine (3), epi-rhazyaminine (4), rhazizine (5), 20-epi-sitsirikine (6), antirhine (7), and 16-epi-stemmadenine-N-oxide (8). The chemical structures were established by various spectroscopic experiments. Compounds 1–8 exhibited cytotoxic effects against three cancer cells with IC50 values ranging between 5.1 ± 0.10 and 93.2 ± 9.73 µM against MCF-7; 5.1 ± 0.28 and 290.2 ± 7.50 µM against HepG2, and 3.1 ± 0.17 and 55.7 ± 4.29 µM against HeLa cells. Compound 2 showed the most potent cytotoxic effect against all cancer cell lines (MCF-7, HepG2 and HeLa with IC50 values = 5.1 ± 0.10, 5.1 ± 0.28, and 3.1 ± 0.17 µM, respectively). Furthermore, compound 2 revealed a significant increase in the apoptotic cell population of MCF-7, HepG2, and HeLa cells, with 31.4 ± 0.2%, 29.2 ± 0.5%, and 34.9 ± 0.6%, respectively. Compound 2 decreased the percentage of the phagocytic pathway on HepG2 cells by 15.0 ± 0.1%. These findings can explain the antiproliferative effect of compound 2.
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Affiliation(s)
- Zainab H. Abdul-Hameed
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (H.S.A.); (T.R.S.)
| | - Nahed O. Bawakid
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (H.S.A.); (T.R.S.)
| | - Hajer S. Alorfi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (H.S.A.); (T.R.S.)
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (H.S.A.); (T.R.S.)
| | - Najla Ali Alburae
- Department of Biology, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Ahmed Abdel-Lateff
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia
| | - Serag Eldin I. Elbehairi
- Department of Biology, Faculty of Science, King Khalid University, Abha 9004, Saudi Arabia; (S.E.I.E.); (M.Y.A.)
- Cell Culture Laboratory, Egyptian Organization for Biological Products and Vaccines, VACSERA Holding Company, Giza 22311, Egypt
| | - Mohammad Y. Alfaifi
- Department of Biology, Faculty of Science, King Khalid University, Abha 9004, Saudi Arabia; (S.E.I.E.); (M.Y.A.)
| | - Nabil A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia
- Correspondence: or ; Tel.: +966-560352034
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Ashour GR, Hussein MA, Sobahi TR, Alamry KA, Alqarni SA, Rafatullah M. Modification of Sulfonated Polyethersulfone Membrane as a Selective Adsorbent for Co(II) Ions. Polymers (Basel) 2021; 13:polym13203569. [PMID: 34685328 PMCID: PMC8539883 DOI: 10.3390/polym13203569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/19/2021] [Accepted: 10/09/2021] [Indexed: 11/16/2022] Open
Abstract
In the current study, a variety of sulfonated polyethersulfone (SPES)-based ion-exchange membranes were prepared and utilized as efficient and selective solid adsorbents for the detection of Co(II) ions in aquatic solutions. SPES membranes were treated with a variety of cations at a 2:1 ratio overnight. The produced materials were assessed via XRD, FT-IR, SEM, and TGA analyses. The structure of these materials was confirmed by FT-IR and XRD, which also confirmed the inclusion of Na+, NH4+, and amberlite on the SPES surface successfully. TGA analysis showed that the thermal stabilities of these materials were enhanced, and the order of stability was NH4-SPES > SPES > Na-SPES > A-SPES. Furthermore, the efficiency of these modified membranes for the determination and adsorption of a variety of metal ions was also examined by the ICP-OES analytical technique. A-SPES expressed a powerful efficiency of adsorption, and it showed an efficient as well as quantitative adsorption at pH = 6. Moreover, A-SPES displayed the highest adsorption capacity of 90.13 mg/g for Co(II) through the Langmuir adsorption isotherm.
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Affiliation(s)
- Gadeer R. Ashour
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (G.R.A.); (T.R.S.); (K.A.A.)
| | - Mahmoud A. Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (G.R.A.); (T.R.S.); (K.A.A.)
- Polymer Chemistry Lab., Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
- Correspondence: (M.A.H.); (M.R.); Tel.: +60-46532111 (M.R.); Fax: +60-4656375 (M.R.)
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (G.R.A.); (T.R.S.); (K.A.A.)
| | - Khalid A. Alamry
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (G.R.A.); (T.R.S.); (K.A.A.)
| | - Sara A. Alqarni
- Department of Chemistry, College of Science, University of Jeddah, Jeddah 21959, Saudi Arabia;
| | - Mohd Rafatullah
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Correspondence: (M.A.H.); (M.R.); Tel.: +60-46532111 (M.R.); Fax: +60-4656375 (M.R.)
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K. S, T.N. MM, P. MR, Asiri AM, Sobahi TR, Asad M. Comparative Green and Conventional Synthesis of 2-Hydroxy-1-Naphthaldehyde Based Barbiturates and Their DFT Study. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1982735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Snigdha K.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Mohammed Musthafa T.N.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Mohammed Rashad P.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammad Asad
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah, Saudi Arabia
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Mohammed AE, Abdul-Hameed ZH, Alotaibi MO, Bawakid NO, Sobahi TR, Abdel-Lateff A, Alarif WM. Chemical Diversity and Bioactivities of Monoterpene Indole Alkaloids (MIAs) from Six Apocynaceae Genera. Molecules 2021; 26:488. [PMID: 33477682 PMCID: PMC7831967 DOI: 10.3390/molecules26020488] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 01/06/2023] Open
Abstract
By the end of the twentieth century, the interest in natural compounds as probable sources of drugs has declined and was replaced by other strategies such as molecular target-based drug discovery. However, in the recent times, natural compounds regained their position as extremely important source drug leads. Indole-containing compounds are under clinical use which includes vinblastine and vincristine (anticancer), atevirdine (anti-HIV), yohimbine (erectile dysfunction), reserpine (antihypertension), ajmalicine (vascular disorders), ajmaline (anti-arrhythmic), vincamine (vasodilator), etc. Monoterpene Indole Alkaloids (MIAs) deserve the curiosity and attention of researchers due to their chemical diversity and biological activities. These compounds were considered as an impending source of drug-lead. In this review 444 compounds, were identified from six genera belonging to the family Apocynaceae, will be discussed. These genera (Alstonia, Rauvolfia, Kopsia, Ervatamia, and Tabernaemontana, and Rhazya) consist of 400 members and represent 20% of Apocynaceae species. Only 30 (7.5%) species were investigated, whereas the rest are promising to be investigated. Eleven bioactivities, including antibacterial, antifungal, anti-inflammatory and immunosuppressant activities, were reported. Whereas cytotoxic effect represents 47% of the reported activities. Convincingly, the genera selected in this review are a wealthy source for future anticancer drug lead.
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Affiliation(s)
- Afrah E. Mohammed
- Department of Biology, Faculty of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Zainab H. Abdul-Hameed
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Modhi O. Alotaibi
- Department of Biology, Faculty of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Nahed O. Bawakid
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia
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Katowah DF, Mohammed GI, Al‐Eryani DA, Osman OI, Sobahi TR, Hussein MA. Fabrication of conductive cross‐linked polyaniline/
G‐MWCNTS core‐shell
nanocomposite: A selective sensor for trace determination of chlorophenol in water samples. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4988] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dina F. Katowah
- Chemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Department of Chemistry, Faculty of Applied Science Umm Al‐Qura University Makkah Saudi Arabia
| | - Gharam I. Mohammed
- Department of Chemistry, Faculty of Applied Science Umm Al‐Qura University Makkah Saudi Arabia
| | - Dyab A. Al‐Eryani
- Chemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Department of Chemistry, Faculty of Applied Science Thamar University Dhamar Yemen
| | - Osman I. Osman
- Chemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Chemistry Department, Faculty of Science University of Khartoum Khartoum Sudan
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
| | - Mahmoud A. Hussein
- Chemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
- Polymer chemistry Lab., Chemistry Department, Faculty of Science Assiut University Assiut Egypt
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Katowah DF, Mohammed GI, Al-Eryani DA, Sobahi TR, Hussein MA. Rapid and sensitive electrochemical sensor of cross-linked polyaniline/oxidized carbon nanomaterials core-shell nanocomposites for determination of 2,4-dichlorophenol. PLoS One 2020; 15:e0234815. [PMID: 32584837 PMCID: PMC7316237 DOI: 10.1371/journal.pone.0234815] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/02/2020] [Indexed: 11/19/2022] Open
Abstract
Nanocomposites (NCs) of crosslinked polyaniline (CPA)-coated oxidized carbon nanomaterials (OXCNMs) were fabricated as a very sensitive and simple electrochemical sensor to be utilized in 2,4-dichlorophenol (2,4-DCPH) detection. CPA/OXCNMs NCs were prepared by chemical copolymerization of polyaniline with triphenylamine and p-phenylenediamine in the presence of OXCNMs. The CPA/GO-OXSWCNTNCs exhibited a higher affinity for the oxidation of chlorophenols compared to the glassy carbon electrode (GCE), CPA/GCE, and other NCs. Cyclic voltammetry was performed to investigate and assess the electrocatalytic oxidation of 2,4-DCPH on the modified GCE. The compound yielded a well-defined voltammetric response in a Britton-Robinson buffer (pH 5) at 0.54 V (vs. silver chloride electrode). Quantitative determination of 2,4-DCPH was performed by differential pulse voltammetry under optimal conditions in the concentration range of 0.05 to 1.2 nmol L-1, and a linear calibration graph was obtained. The detection limit (S/N = 3) was found to be 4.2 nmol L-1. In addition, the results demonstrated that the CPA/GO-OXSWCNTs/GCE sensor exhibited a strong anti-interference ability, reproducibility, and stability. The prepared CPA/GO-OXSWCNTs/GCE sensor was used to rapidly detect 2,4-DCPH with a high degree of sensitivity in fish farm water with proven levels of satisfactory recoveries.
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Affiliation(s)
- Dina F. Katowah
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Gharam I. Mohammed
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Dyab A. Al-Eryani
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Chemistry, Faculty of Applied Science, Thamar University, Dhamar, Yemen
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mahmoud A. Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Polymer Chemistry Laboratory, Faculty of Science, Assiut University, Assiut, Egypt
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Elfeky SM, Sobahi TR, Gineinah MM, Ahmed NS. Synthesis, biological screening, and molecular docking of quinazolinone and quinazolinethione as phosphodiesterase 7 inhibitors. Arch Pharm (Weinheim) 2019; 353:e1900211. [DOI: 10.1002/ardp.201900211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/08/2019] [Accepted: 10/16/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Sherin M. Elfeky
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyMansoura University Mansoura Egypt
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of ScienceKing Abdul‐Aziz University Jeddah Saudi Arabia
| | - Magdy M. Gineinah
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyMansoura University Mansoura Egypt
- Department of Pharmaceutical Chemistry, Faculty of PharmacyKing Abdul‐Aziz University Jeddah Saudi Arabia
| | - Nesreen S. Ahmed
- Department of Therapeutic Chemistry, Pharmaceutical, and Drug Industries Research DivisionNational Research Center Dokki Cairo Egypt
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Sobahi TR, Amin MS. Upgrading the photocatalytic achievement of g-C3N4 nanosheets along decoration with Ag@TiO2 nanospheres for the preparation of vitamin B3. Appl Nanosci 2019. [DOI: 10.1007/s13204-019-00960-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Asiri AM, Sobahi TR, Al-Amari MM, Asad M, Zayed MEM, Khan SA. Physicochemical Investigation of HDDP Azomethine Dye as Turn-On Fluorescent Chemosensor for High Selectivity and Sensitivity of Al3+ Ions. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0805-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Ayyad SEN, Katoua DF, Alarif WM, Sobahi TR, Aly MM, Shaala LA, Ghandourah MA. Two new polyacetylene derivatives from the Red Sea sponge Xestospongia sp. ACTA ACUST UNITED AC 2015; 70:297-303. [PMID: 26618569 DOI: 10.1515/znc-2015-5015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 10/15/2015] [Indexed: 11/15/2022]
Abstract
Two new polyacetylenes (1 and 2), along with two known C-30 steroids (3 and 4) were identified from the Red Sea sponge, Xestospongia sp. The chemical structures were determined based on extensive spectroscopic measurements 1D (1H, 13C and DEPT) and 2D (COSY, HSQC and HMBC) NMR, UV, IR and MS. The new compounds 1 and 2 were evaluated for their antimicrobial and antitumor activities. 1 and 2 were active against multidrug- resistant bacteria with MICs ranged from 2.2 to 4.5 μM. No toxicity was recorded for the two tested compounds up to 5 μM using Artemia salina as a test organism. Compound 2 showed excellent antifungal activity against some pathogenic fungi such as Aspergillus niger and Candida albicans (MIC 2.2-2.5 μM) and antitumor activity against both Ehrlich ascites carcinoma and lymphocytic leukemia (LD50 5.0 μM).
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Asiri AM, Faidallah HM, Sobahi TR, Ng SW, Tiekink ERT. Erratum: (4Z)-4-Benzyl-idene-2-phenyl-1,3-oxazol-5(4H)-one. Corrigendum. Acta Crystallogr E Crystallogr Commun 2015; 71:e4. [PMID: 26617187 PMCID: PMC4645025 DOI: 10.1107/s2056989015019271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 10/12/2015] [Indexed: 11/10/2022]
Abstract
In the paper by Asiri et al. [Acta Cryst. (2012), E68, o1154], the title and the chemical name of one of the reagents used in the synthesis are corrected.[This corrects the article DOI: 10.1107/S1600536812011579.].
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Affiliation(s)
- Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia ; The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, PO Box 80203, Saudi Arabia
| | - Hassan M Faidallah
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Tariq R Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Seik Weng Ng
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia ; Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Edward R T Tiekink
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Zhang J, Yuan Y, Liang G, Arshad MN, Albar HA, Sobahi TR, Yu SH. A microwave-facilitated rapid synthesis of gold nanoclusters with tunable optical properties for sensing ions and fluorescent ink. Chem Commun (Camb) 2015; 51:10539-42. [PMID: 26040982 DOI: 10.1039/c5cc03086b] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Luminescent glutathione-capped gold nanoclusters (GS-AuNCs) with tunable emissions have been efficiently synthesized by a solution-based microwave method.
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Affiliation(s)
- Jia Zhang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, China.
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16
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Liu XJ, Cui CH, Li HH, Lei Y, Zhuang TT, Sun M, Arshad MN, Albar HA, Sobahi TR, Yu SH. Hollow ternary PtPdCu nanoparticles: a superior and durable cathodic electrocatalyst. Chem Sci 2015; 6:3038-3043. [PMID: 28706679 PMCID: PMC5490055 DOI: 10.1039/c4sc04037f] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/11/2015] [Indexed: 11/21/2022] Open
Abstract
Hollow PtPdCu nanoparticles with a Pt-enriched surface, formed by the dealloying action of acetic acid, exhibit superior durability and catalytic activity toward the ORR.
Hollow alloyed nanoparticles (NPs) represent one kind of promising fuel cell electrocatalyst. However, the formation of single-cavity hollow structures by a dealloying process is quite challenging owing to the random leaching/dissolution of transition metals, surface passivation and the limited diffusion distance of the noble metals. Here we present a facile method to prepare hollow PtPdCu NPs derived from monodisperse alloy NPs by an acetic acid-assisted dealloying process. Here, acetic acid not only acts as a chemical etching agent but also plays an important role in the removal of the residual surfactants for colloidal NPs. Our findings rectify the current knowledge that hollow alloyed NPs cannot be prepared by a dealloying strategy and provide further understanding of the dealloying process in a ternary system. Such unique hollow ternary PtPdCu NPs exhibit outstanding durability and improved catalytic activity toward the oxygen reduction reaction.
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Affiliation(s)
- Xiao-Jing Liu
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
| | - Chun-Hua Cui
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
| | - Hui-Hui Li
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
| | - Yong Lei
- Institute of Physics & IMN MacroNano , Ilmenau University of Technology , Prof. Schmidt-Straße 26 , 98693 Ilmenau , Germany
| | - Tao-Tao Zhuang
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
| | - Meng Sun
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
| | - Muhammad Nadeem Arshad
- Center of Excellence for Advanced Materials Research , King Abdulaziz University , Jeddah 21589 , Saudi Arabia.,Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Hassan A Albar
- Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Tariq R Sobahi
- Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Collaborative Innovation Center of Suzhou Nano Science and Technology , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui , 230026 , China . ; ; Tel: +86-551-63603040
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17
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Yu XF, Liu JW, Cong HP, Xue L, Arshad MN, Albar HA, Sobahi TR, Gao Q, Yu SH. Template- and surfactant-free synthesis of ultrathin CeO 2 nanowires in a mixed solvent and their superior adsorption capability for water treatment. Chem Sci 2015; 6:2511-2515. [PMID: 28706659 PMCID: PMC5489027 DOI: 10.1039/c5sc00104h] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 02/16/2015] [Indexed: 11/21/2022] Open
Abstract
Ultrathin CeO2 nanowires with a diameter of 5 nm and an aspect ratio of more than 100 can be prepared by a one-step refluxing approach in a mixed solvent composed of water and ethanol without using any templates or surfactants. The formation mechanism of the as-synthesized ultrathin nanowires has been investigated. The as-synthesized CeO2 nanowires with a high surface area of 125.31 m2 g-1 exhibited excellent wastewater treatment performance with high removal capacities towards organic dyes and heavy metal ions. In addition, the as-synthesized CeO2 nanowires can adsorb Congo red selectively from a mixed solution composed of several dyes. Successful access to high quality ultrathin nanowires will make it possible for their potential application in catalysis and other fields.
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Affiliation(s)
- Xiao-Fang Yu
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
| | - Jian-Wei Liu
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
| | - Huai-Ping Cong
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
| | - Lei Xue
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
| | - Muhammad Nadeem Arshad
- Center of Excellence for Advanced Materials Research , Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia.,Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Hassan A Albar
- Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Tariq R Sobahi
- Chemistry Department , Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Qiang Gao
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry , Hefei National Laboratory for Physical Sciences at Microscale , Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China .
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Staneva D, Vasileva-Tonkova E, Makki MS, Sobahi TR, Abdеl-Rahman RM, Boyaci IH, Asiri AM, Grabchev I. Synthesis and spectral characterization of a new PPA dendrimer modified with 4-bromo-1,8-naphthalimide and in vitro antimicrobial activity of its Cu(II) and Zn(II) metal complexes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.083] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Kurakula M, El-Helw AM, Sobahi TR, Abdelaal MY. Chitosan based atorvastatin nanocrystals: effect of cationic charge on particle size, formulation stability, and in-vivo efficacy. Int J Nanomedicine 2015; 10:321-34. [PMID: 25609947 PMCID: PMC4293367 DOI: 10.2147/ijn.s77731] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cationic charged chitosan as stabilizer was evaluated in preparation of nanocrystals using probe sonication method. The influence of cationic charge densities of chitosan (low CSL, medium CSM, high CSH molecular weights) and Labrasol® in solubility enhancement and modifying the release was investigated, using atorvastatin (ATR) as poorly soluble model drug. Compared to CSM and CSH; low cationic charge of CSL acted as both electrostatic and steric stabilizer by significant size reduction to 394 nm with charge of 21.5 meV. Solubility of ATR-CSL increased to 60-fold relative to pure ATR and ATR-L. Nanocrystals were characterized for physiochemical properties. Scanning electron microscopy revealed scaffold-like structures with high surface area. X-ray powder diffractometry and differential scanning calorimetry revealed crystalline to slight amorphous state changes after cationic charge size reduction. Fourier transform-infrared spectra indicated no potent drug-excipient interactions. The enhanced dissolution profile of ATR-CSL indicates that sustained release was achieved compared with ATR-L and Lipitor®. Anti-hyperlipidemic performance was pH dependent where ATR-CSL exhibited 2.5-fold higher efficacy at pH 5 compared to pH 6 and Lipitor®. Stability studies indicated marked changes in size and charge for ATR-L compared to ATR-CSL exemplifying importance of the stabilizer. Therefore, nanocrystals developed with CSL as a stabilizer is a promising choice to enhance dissolution, stability, and in-vivo efficacy of major Biopharmaceutical Classification System II/IV drugs.
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Affiliation(s)
- Mallesh Kurakula
- Polymer Research Lab, Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - A M El-Helw
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tariq R Sobahi
- Polymer Research Lab, Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Magdy Y Abdelaal
- Polymer Research Lab, Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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20
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Arshad MN, Rahman MM, Asiri AM, Sobahi TR, Yu SH. Development of Hg2+ sensor based on N′-[1-(pyridin-2-yl)ethylidene]benzenesulfono-hydrazide (PEBSH) fabricated silver electrode for environmental remediation. RSC Adv 2015. [DOI: 10.1039/c5ra09399f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
N′-[1-(Pyridin-2-yl)ethylidene]benzenesulfonohydrazide (PEBSH) was synthesized via a simple condensation of 2-acetyl pyridine and benzene sulfonyl hydrazide in very good yield and crystallized, and then used in the formation of a Hg2+ sensor.
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Affiliation(s)
| | - Mohammed M. Rahman
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Tariq R. Sobahi
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
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21
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Kurakula M, Sobahi TR, El-Helw AM, Abdelaal MY. Development and validation of a RP-HPLC method for assay of Atorvastatin and its application in dissolution studies on thermosensitive hydrogel-based nanocrystals. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i10.16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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22
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Makki MS, Staneva D, Sobahi TR, Bosch P, Abdel-Rahman RM, Grabchev I. Design and synthesis of a new fluorescent tripod for chemosensor applications. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abstract
INTRODUCTION Integrins are heterodimeric cell surface receptors, which enable adhesion, proliferation, and migration of cells by recognizing binding motifs in extracellular matrix (ECM) proteins. As transmembrane linkers between the cytoskeleton and the ECM, they are able to recruit a huge variety of proteins and to influence signaling pathways bidirectionally, thereby regulating gene expression and cell survival. Hence, integrins play a key role in various physiological as well as pathological processes, which has turned them into an attractive target for pharmaceutical research. AREAS COVERED In this review, the latest therapeutic developments of drug candidates and recently patented integrin ligands are summarized. EXPERT OPINION Integrins have been proven to be valuable therapeutic targets in the treatment of several inflammatory and autoimmune diseases, where leukocyte adhesion processes are regulated by them. Furthermore, they play an important role in pathological angiogenesis and tumor metastasis, being a promising target for cancer therapy.
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Affiliation(s)
- Tobias G Kapp
- Institute for Advanced Study (IAS) and Center for Integrated Protein Science (CIPSM), Department Chemie, Technische Universität München , Lichtenbergstrasse 4, 85747 Garching , Germany
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25
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Neubauer S, Rechenmacher F, Brimioulle R, Di Leva FS, Bochen A, Sobahi TR, Schottelius M, Novellino E, Mas-Moruno C, Marinelli L, Kessler H. Pharmacophoric modifications lead to superpotent αvβ3 integrin ligands with suppressed α5β1 activity. J Med Chem 2014; 57:3410-7. [PMID: 24654918 DOI: 10.1021/jm500092w] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The selective targeting of the αvβ3 integrin subtype without affecting the structurally closely related receptor α5β1 is crucial for understanding the details of their biological and pathological functions and thus of great relevance for diagnostic and therapeutic approaches in cancer treatment. Here, we present the synthesis of highly active RGD peptidomimetics for the αvβ3 integrin with remarkable selectivity against α5β1. Incorporation of a methoxypyridine building block into a ligand scaffold and variation of different functional moieties led to αvβ3-antagonistic activities in the low nanomolar or even subnanomolar range. Furthermore, docking studies were performed to give insights into the binding modes of the novel compounds. The presented library comprises powerful ligands for specific addressing and blocking of the αvβ3 integrin subtype, thereby representing privileged tools for integrin-based personalized medicine.
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Affiliation(s)
- Stefanie Neubauer
- Department Chemie, Institute for Advanced Study (IAS) and Center of Integrated Protein Science (CIPSM), Technische Universität München , Lichtenbergstrasse 4, 85747 Garching, Germany
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26
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Pallarola D, Bochen A, Boehm H, Rechenmacher F, Sobahi TR, Spatz JP, Kessler H. Interface Immobilization Chemistry of cRGD-based Peptides Regulates Integrin Mediated Cell Adhesion. Adv Funct Mater 2014; 24:943-956. [PMID: 25810710 PMCID: PMC4368046 DOI: 10.1002/adfm.201302411] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 08/28/2013] [Indexed: 05/29/2023]
Abstract
The interaction of specific surface receptors of the integrin family with different extracellular matrix-based ligands is of utmost importance for the cellular adhesion process. A ligand consists of an integrin-binding group, here cyclic RGDfX, a spacer molecule that lifts the integrin-binding group from the surface and a surface anchoring group. c(-RGDfX-) peptides are bound to gold nanoparticle structured surfaces via polyproline, polyethylene glycol or aminohexanoic acid containing spacers of different lengths. Although keeping the integrin-binding c(-RGDfX-) peptides constant for all compounds, changes of the ligand's spacer chemistry and length reveal significant differences in cell adhesion activation and focal adhesion formation. Polyproline-based peptides demonstrate improved cell adhesion kinetics and focal adhesion formation compared with common aminohexanoic acid or polyethylene glycol spacers. Binding activity can additionally be improved by applying ligands with two head groups, inducing a multimeric effect. This study gives insights into spacer-based differences in integrin-driven cell adhesion processes and remarkably highlights the polyproline-based spacers as suitable ligand-presenting templates for surface functionalization.
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Affiliation(s)
- Diego Pallarola
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany ; Department of Biophysical Chemistry, University of Heidelberg 69120, Heidelberg, Germany
| | - Alexander Bochen
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany
| | - Heike Boehm
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany ; Department of Biophysical Chemistry, University of Heidelberg 69120, Heidelberg, Germany ; CSF Biomaterials and Cellular Biophysics, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Florian Rechenmacher
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany
| | - Tariq R Sobahi
- Chemistry Department Faculty of Science, King Abdulaziz University P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Joachim P Spatz
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany ; Chemistry Department Faculty of Science, King Abdulaziz University P.O. Box 80203, Jeddah 21589, Saudi Arabia
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27
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Rechenmacher F, Neubauer S, Mas-Moruno C, Dorfner PM, Polleux J, Guasch J, Conings B, Boyen HG, Bochen A, Sobahi TR, Burgkart R, Spatz JP, Fässler R, Kessler H. A Molecular Toolkit for the Functionalization of Titanium-Based Biomaterials That Selectively Control Integrin-Mediated Cell Adhesion. Chemistry 2013; 19:9218-23. [DOI: 10.1002/chem.201301478] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 12/13/2022]
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28
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Abdelaal MY, Sobahi TR, Al-Shareef HF. Modification of chitosan derivatives of environmental and biological interest: A green chemistry approach. Int J Biol Macromol 2013; 55:231-9. [DOI: 10.1016/j.ijbiomac.2013.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/06/2013] [Accepted: 01/18/2013] [Indexed: 10/27/2022]
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Asiri AM, Arshad MN, Sobahi TR, Mustafa G. 2-[(2-Hydroxynaphthalen-1-yl)methylideneamino]-5,6,7,8-tetrahydro-4 H-cyclohepta[ b]thiophene-3-carbonitrile. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o193. [PMID: 23424477 PMCID: PMC3569254 DOI: 10.1107/s160053681300007x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 01/02/2013] [Indexed: 11/23/2022]
Abstract
Two independent molecules, A and B, comprise the asymmetric unit of the title compound, C21H18N2OS, with the difference in the angle of orientation between the naphthalene ring system and the mean plane of the cycloheptyl ring [16.13 (1) in A and 11.48 (5)° in B], being evident. The cycloheptyl ring adopts a distorted chair conformation in each molecule with r.m.s. deviations of 0.2345 (4) (A) and 0.2302 (4) Å (B). Intramolecular O—H⋯N hydrogen bonding generates planar six-membered S(6) loops with r.m.s. deviations of 0.0099 (1) (A) and 0.0286 (1) Å (B).
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Asiri AM, Arshad MN, Zia-Ur-Rehman M, Sobahi TR. 1,3-Diethyl-2-sulfanyl-idene-5-(2,4,5-trimeth-oxy-benzyl-idene)-1,3-diazinane-4,6-dione. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o49. [PMID: 23476432 PMCID: PMC3588229 DOI: 10.1107/s1600536812049707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 12/04/2012] [Indexed: 11/10/2022]
Abstract
The title compound, C18H22N2O5S, is largely planar, with an r.m.s. deviation of 0.0546 (1) Å of atoms from the mean plane through all non-H atoms except for the methyl groups. The benzene and pyrimidine-dione rings are inclined to one another at a dihedral angle of 1.41 (7)°. In the crystal, weak C-H⋯O inter-actions connect the mol-ecules into chains propagating along the b-axis direction.
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Affiliation(s)
- Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia ; Center of Excellence for Advanced Materials Research (CEAMR), Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia
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31
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Asiri AM, Faidallah HM, Sobahi TR, Ng SW, Tiekink ERT. 1-Phenyl-1H-pyrazole-4-carbaldehyde. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1088. [PMID: 22589951 PMCID: PMC3344042 DOI: 10.1107/s1600536812010896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 03/13/2012] [Indexed: 05/31/2023]
Abstract
In the title mol-ecule, C(10)H(8)N(2)O, the five- and six-membered rings form a dihedral angle of 10.14 (9)°. The aldehyde group is almost coplanar with the pyrazole ring to which it is connected [O-C-C-C torsion angle = -179.35 (17)°]. In the crystal, inversion dimers are linked by four C-H⋯O inter-actions as the carbonyl O atom accepts two such bonds. The dimeric aggregates are linked into supra-molecular layers in the ac plane by C-H⋯π and π-π [ring centroid(pyrrole)⋯ring centroid(phen-yl) = 3.8058 (10) Å] inter-actions.
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Affiliation(s)
- Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
- The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, PO Box 80203, Saudi Arabia
| | - Hassan M. Faidallah
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Seik Weng Ng
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Asiri AM, Faidallah HM, Sobahi TR, Ng SW, Tiekink ERT. N-(4-Sulfamoylphen-yl)acetamide. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1155. [PMID: 22606101 PMCID: PMC3344098 DOI: 10.1107/s1600536812011701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 03/18/2012] [Indexed: 05/31/2023]
Abstract
In the title compound, C(8)H(10)N(2)O(3)S, the dihedral angle between the acetamide group and the benzene ring is 15.59 (12)° and the amino group is close to being perpendicular to the benzene ring [N-S-C(ar)-C(ar) (ar = aromatic) torsion angle = 109.4 (2)°]. In the crystal, mol-ecules are linked into supra-molecular tubes parallel to [001] by amine-amide N-H⋯O inter-actions and these are connected into the three-dimensional architecture by amide-sulfonamide N-H⋯O hydrogen bonds. The crystal studied was a racemic twin.
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Affiliation(s)
- Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
- The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, PO Box 80203, Saudi Arabia
| | - Hassan M. Faidallah
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
| | - Seik Weng Ng
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Asiri AM, Faidallah HM, Sobahi TR, Ng SW, Tiekink ERT. (4Z)-4-Benzyl-idene-2-phenyl-1,3-oxazol-5(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1154. [PMID: 22606100 PMCID: PMC3344097 DOI: 10.1107/s1600536812011579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 03/17/2012] [Indexed: 12/03/2022]
Abstract
In the title compound, C17H13NO2, the benzene ring is twisted slightly out of the plane of the oxazole ring to which it is attached [dihedral angle = 7.98 (8)°]. Similarly, there is a twist [dihedral angle = 5.50 (8)°] between the oxazole and phenyl rings that are linked via the C=C bond [1.348 (2) Å]; the conformation about the latter is Z. In the crystal, the presence of C—H⋯O, C—H⋯π and π–π interactions [centroid–centroid distance = 3.5259 (9) Å] link the molecules into a three-dimensional architecture.
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Makki MSI, Sobahi TR, Abdelaal MY. Utilization of Urea- and Melamine-Formaldehyde Resin Wastes as Reinforcing Materials. INT J POLYM MATER PO 2009. [DOI: 10.1080/00914030903146712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sobahi TR. Asymmetric aldol reactions of N-propionyl derivative of chiral auxiliary derived from terpene alcohol cis-myrtanol with benzaldehyde. ARKIVOC 2003. [DOI: 10.3998/ark.5550190.0004.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Abdel-Mogib M, Basaif SA, Asiri AM, Sobahi TR, Batterjee SM. New clerodane diterpenoid and flavonol-3-methyl ethers from Dodonaea viscosa. DIE PHARMAZIE 2001; 56:830-1. [PMID: 11683136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Chromatographic separation of the extract of the aerial parts of Dodonaea viscosa L. (family Sapindaceae) afforded beta-sitosterol, stigmasterol, the flavone acacetin-7-methyl ether, the flavonol-3-methyl ethers 4',5,7-trihydroxy-3,6-dimethoxyflavone and penduletin, as well as a new clerodane diterpenoid which was identified by spectral means as 15,16-epoxy-5,9-diepicleroda-3,13(16),14-trien-20,19-olide.
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Affiliation(s)
- M Abdel-Mogib
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
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