1
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Wang FY, Yang LM, Wang SS, Lu H, Wang XS, Lu Y, Ni WX, Liang H, Huang KB. Cycloplatinated (II) Complex Based on Isoquinoline Alkaloid Elicits Ferritinophagy-Dependent Ferroptosis in Triple-Negative Breast Cancer Cells. J Med Chem 2024; 67:6738-6748. [PMID: 38526421 DOI: 10.1021/acs.jmedchem.4c00285] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The development and optimization of metal-based anticancer drugs with novel cytotoxic mechanisms have emerged as key strategies to overcome chemotherapeutic resistance and side effects. Agents that simultaneously induce ferroptosis and autophagic death have received extensive attention as potential modalities for cancer therapy. However, only a limited set of drugs or treatment modalities can synergistically induce ferroptosis and autophagic tumor cell death. In this work, we designed and synthesized four new cycloplatinated (II) complexes harboring an isoquinoline alkaloid C∧N ligand. On screening the in vitro activity of these agents, we found that Pt-3 exhibited greater selectivity of cytotoxicity, decreased resistance factors, and improved anticancer activity compared to cisplatin. Furthermore, Pt-3, which we demonstrate can initiate potent ferritinophagy-dependent ferroptosis, exhibits less toxic and better therapeutic activity than cisplatin in vivo. Our results identify Pt-3 as a promising candidate or paradigm for further drug development in cancer treatment.
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Affiliation(s)
- Feng-Yang Wang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Liang-Mei Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Shan-Shan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Hui Lu
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Xu-Sheng Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Yuan Lu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Ke-Bin Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
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2
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Zhong YH, Huang GF, Zhao SY, Chung LH, Zhang HT, Zheng JH, Yan YL, Ni WX, He J. Easy but Efficient: Facile Approach to Molecule with Theoretically Justified Donor-Acceptor Structure for Effective Photothermal Conversion and Intravenous Photothermal Therapy. Adv Sci (Weinh) 2024:e2309068. [PMID: 38477060 DOI: 10.1002/advs.202309068] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/02/2024] [Indexed: 03/14/2024]
Abstract
To accelerate the pace in the field of photothermal therapy (PTT), it is urged to develop easily accessible photothermal agents (PTAs) showing high photothermal conversion efficiency (PCE). As a proof-of-concept, hereby a conventional strategy is presented to prepare donor-acceptor (D-A) structured PTAs through cycloaddition-retroelectrocyclization (CA-RE) reaction, and the resultant PTAs give high PCE upon near-infrared (NIR) irradiation. By joint experimental-theoretical study, these PTAs exhibit prominent D-A structure with strong intramolecular charge transfer (ICT) characteristics and significantly twisting between D and A units which account for the high PCEs. Among them, the DMA-TCNQ exhibits the strongest absorption in NIR range as well as the highest PCE of 91.3% upon irradiation by 760-nm LED lamp (1.2 W cm-2 ). In vitro and in vivo experimental results revealed that DMA-TCNQ exhibits low dark toxicity and high phototoxicity after IR irradiation along with nude mice tumor inhibition up to 81.0% through intravenous therapy. The findings demonstrate CA-RE reaction as a convenient approach to obtain twisted D-A structured PTAs for effective PTT and probably promote the progress of cancer therapies.
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Affiliation(s)
- Yuan-Hui Zhong
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
| | - Gui-Feng Huang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Sheng-Yi Zhao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
| | - Lai-Hon Chung
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
| | - Hua-Tang Zhang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
| | - Jin-Hong Zheng
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Yi-Lang Yan
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Jun He
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
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3
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Li X, Li J, Hong P, Ni WX, Luo B. Rapid detection of urine chloride enabled by ion exchange in hydrophilic lead halide perovskite nanocrystals. Anal Methods 2023; 15:2318-2325. [PMID: 37132358 DOI: 10.1039/d3ay00449j] [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] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The rapid and precise detection of chloride ions in biosystems is of great importance for clinical diagnosis. In this work, hydrophilic CsPbBr3 perovskite nanocrystals (PNCs) with a high photoluminescence (PL) quantum yield (QY) of 59% (0.5 g L-1) are successfully achieved through the passivation of micellar glycyrrhizic acid (GA), which enables good dispersion of PNCs in ethanol. Due to the ionic nature and halogen-dominated band edge, PNCs exhibit fast ion-exchange and halogen-dependent optical properties. As a result, colloidal GA-capped PNC ethanol solution shows a continuous PL shift once aqueous Cl- with different concentrations is added. This fluorescence sensor shows a wide linear detection range (2-200 mM) of Cl-, short response time (∼1 s), and low limit of detection (1.82 mM). Because of the encapsulation of GA, good water and pH stability, and anti-interference performance are observed for the GA-capped PNC-based fluorescence sensor. Our findings provide an insight into the biosensor applications of hydrophilic PNCs.
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Affiliation(s)
- Xianli Li
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China.
| | - Jie Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China.
| | - Peibin Hong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China.
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China.
| | - Binbin Luo
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China.
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4
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Liu T, Pan C, Shi H, Huang T, Huang YL, Deng YY, Ni WX, Man WL. Cytotoxic cis-ruthenium(III) bis(amidine) complexes. Dalton Trans 2023. [PMID: 37000490 DOI: 10.1039/d3dt00328k] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
In chemotherapy, the search for ruthenium compounds as alternatives to platinum compounds is proposed because of their unique properties. However, the geometry effect of ruthenium complexes is sparely investigated. In this paper, we report the synthesis of a series of bis(acetylacetonato)ruthenium(III) complexes bearing two amidines (1-) in a cis configuration. These complexes are highly cytotoxic against various cancer cell lines, including a cisplatin-resistant cell line. In vitro studies suggested that the representative complex can induce cell cycle G0/G1 phase arrest, decrease the mitochondrial membrane potential, elevate the intracellular reactive oxygen species level, and cause DNA damage and caspase-mediated mitochondrial pathway apoptosis in NCI-H460 cells. In vivo, it can effectively inhibit tumor xenograft growth in nude mouse models with no body weight loss. In combination with the reported trans-bis(amidine)ruthenium(III) complexes, we found that ruthenium(III) bis(amidine) complexes could be cytotoxic in both trans and cis geometries, which is in contrast to platinum-based compounds.
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Affiliation(s)
- Tao Liu
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Chen Pan
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Huatian Shi
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, P.R. China.
| | - Tao Huang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Yong-Liang Huang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Yang-Yang Deng
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P.R. China.
| | - Wai-Lun Man
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, P.R. China.
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5
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Pu K, Qiu J, Tong Y, Liu B, Cheng Z, Chen S, Ni WX, Lin Y, Ng KM. Integration of Non-targeted Proteomics Mass Spectrometry with Machine Learning for Screening Cooked Beef Adulterated Samples. J Agric Food Chem 2023; 71:2173-2182. [PMID: 36584280 DOI: 10.1021/acs.jafc.2c06266] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The degradation of ingredients in heat-processed meat products makes their authentication challenging. In this study, protein profiles of raw beef, chicken, duck, pork, and binary simulated adulterated beef samples (chicken-beef, duck-beef, and pork-beef) and their heat-processed samples were obtained by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Heat-stable characteristic proteins were found by screening the overlapping characteristic protein ion peaks of the raw and corresponding heat-processed samples, which were discovered by partial least-squares discriminant analysis. Based on the 36 heat-stable characteristic proteins, qualitative classification for the raw and heat-processed meats was achieved by extreme gradient boosting. Moreover, quantitative analysis via partial least squares regression was applied to determine the adulteration ratio of the simulated adulterated beef samples. The validity of the approach was confirmed by a blind test with the mean accuracy of 97.4%. The limit of detection and limit of quantification of this method were determined to be 5 and 8%, respectively, showing its practical aspect for the beef authentication.
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Affiliation(s)
- Keyuan Pu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Jiamin Qiu
- Department of Biology, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Yongqi Tong
- Department of Biology, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Bolin Liu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Zibin Cheng
- Department of Biology, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Siyu Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Yan Lin
- The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Kwan-Ming Ng
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
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6
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Liu X, Li X, Li J, Lian X, Xiao Y, Zeng R, Ni S, Xu K, Kuai Y, Ni WX, Luo B. Modulating Anthracene Excimer through Guest Engineering in Two-Dimensional Lead Bromide Hybrids. Inorg Chem Front 2023. [DOI: 10.1039/d3qi00289f] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
A full understanding of the excimer formation and structure-property relationship is essential to their development in organic electronics. Herein, we propose a template strategy for finely modulating the stacking configuration...
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7
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Zheng L, Li X, Lian X, Xu R, Liu X, Xuan T, Zeng R, Ni WX, Luo B. Weakening Ligand-Liquid Affinity to Suppress the Desorption of Surface-Passivated Ligands from Perovskite Nanocrystals. Langmuir 2022; 38:15747-15755. [PMID: 36484684 DOI: 10.1021/acs.langmuir.2c02630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interfacial migration of surface-bound ligands highly affects the colloidal stability and optical quality of semiconductor nanocrystals, of which the underlying mechanism is not fully understood. Herein, colloidal CsPbBr3 perovskite nanocrystals (PNCs) with fragile dynamic equilibrium of ligands are taken as the examples to reveal the important role of balancing ligand-solid/solvent affinity in suppressing the desorption of ligands. As a micellar surfactant, glycyrrhizic acid (GA) with bulky hydrophobic and hydrophilic groups exhibits a relatively smaller diffusion coefficient (∼440 μm2/s in methanol) and weaker ligand-liquid affinity than that of conventional alkyl amine and carboxy ligands. Consequently, hydrophilic GA-passivated PNCs (PNCs-GA) show excellent colloidal stability in various polar solvents with dielectric constant ranging from 2.2 to 32.6 and efficient photoluminescence with a quantum yield of 85.3%. Due to the suppressed desorption of GA, the morphological and optical properties of PNCs-GA are well maintained after five rounds purification and two months long-term storage. At last, hydrophilic PNCs-GA are successfully patterned through inkjet- and screen-printing technology. These findings offer deep insights into the interfacial chemistry of colloidal NCs and provide a universal strategy for preparing high-quality hydrophilic PNCs.
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Affiliation(s)
- Lingling Zheng
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Xianli Li
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Xin Lian
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Ruijie Xu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Xiaohui Liu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Tongtong Xuan
- College of Materials, Xiamen University, Xiamen, Fujian Province 361005, P. R. China
| | - Ruosheng Zeng
- School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning, Guangxi Province 530004, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Binbin Luo
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
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8
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Ye M, Huang WQ, Li ZX, Wang CX, Liu T, Chen Y, Hor CHH, Man WL, Ni WX. Osmium(VI) nitride triggers mitochondria-induced oncosis and apoptosis. Chem Commun (Camb) 2022; 58:2468-2471. [PMID: 35024704 DOI: 10.1039/d1cc05148b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a new osmium(VI) nitrido complex bearing a nonplanar tetradentate ligand with potent anticancer activity. This complex causes mitochondrial damage, which induces liver cancer cell death via oncosis and apoptosis. This is the first osmium-based anticancer candidate that induces oncosis.
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Affiliation(s)
- Meng Ye
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Wan-Qiong Huang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Zi-Xin Li
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Chuan-Xian Wang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
| | - Tao Liu
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China.
| | - YunZhou Chen
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, HKSAR, P. R. China
| | | | - Wai-Lun Man
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, HKSAR, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
- Clinical Research Centre, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
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9
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Lu Z, Yang YJ, Ni WX, Li M, Zhao Y, Huang YL, Luo D, Wang X, Omary MA, Li D. Correction: Aggregation-induced phosphorescence sensitization in two heptanuclear and decanuclear gold-silver sandwich clusters. Chem Sci 2021; 12:812. [PMID: 35356747 PMCID: PMC8902837 DOI: 10.1039/d0sc90280b] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 12/14/2020] [Indexed: 02/05/2023] Open
Abstract
[This corrects the article DOI: 10.1039/D0SC05095D.].
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Affiliation(s)
- Zhou Lu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
- Department of Chemistry, University of North Texas 1155 Union Circle #305070 Denton Texas 76203 USA
| | - Yu-Jie Yang
- Department of Chemistry, Shantou University Guangdong 515063 P. R. China
| | - Wen-Xiu Ni
- Department of Chemistry, Shantou University Medical College Shantou Guangdong 515041 P. R. China
| | - Mian Li
- Department of Chemistry, Shantou University Guangdong 515063 P. R. China
| | - Yifang Zhao
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College Shantou Guangdong 515041 P. R. China
| | - Dong Luo
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
| | - Xiaoping Wang
- Neutron Scattering Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831-6475 USA
| | - Mohammad A Omary
- Department of Chemistry, University of North Texas 1155 Union Circle #305070 Denton Texas 76203 USA
| | - Dan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
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10
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Huang WQ, Wang CX, Liu T, Li ZX, Pan C, Chen YZ, Lian X, Man WL, Ni WX. A cytotoxic nitrido-osmium(VI) complex induces caspase-mediated apoptosis in HepG2 cancer cells. Dalton Trans 2020; 49:17173-17182. [PMID: 33119012 DOI: 10.1039/d0dt02715d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The osmium(vi) nitrido complex [OsVI(N)(sap)(py)Cl] is a potential anti-cancer drug with promising in vitro antiproliferative activities toward a panel of cancer cell lines, including cisplatin-resistant cells (IC50 values of 2.8-13.8 μM). This drug targets DNA and changes its conformation via covalent binding and insertion. In vitro studies indicate that the drug induces HepG2 cells G2/M phase arrest, disrupts the mitochondrial membrane potential and causes caspase-mediated apoptosis. Further in vivo studies using HepG2-bearing nude mice reveal that this drug not only shows good antitumor efficacy of inhibiting tumor growth, but also does not show the side effect of weight loss.
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MESH Headings
- Animals
- Antineoplastic Agents/chemical synthesis
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/pharmacology
- Apoptosis/drug effects
- Caspases/metabolism
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Coordination Complexes/chemical synthesis
- Coordination Complexes/chemistry
- Coordination Complexes/pharmacology
- Crystallography, X-Ray
- Dose-Response Relationship, Drug
- Drug Screening Assays, Antitumor
- Hep G2 Cells
- Humans
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/metabolism
- Liver Neoplasms, Experimental/pathology
- Membrane Potential, Mitochondrial/drug effects
- Mice
- Mice, Nude
- Models, Molecular
- Molecular Structure
- Nitriles/chemistry
- Nitriles/pharmacology
- Osmium/chemistry
- Osmium/pharmacology
- Structure-Activity Relationship
- Tumor Cells, Cultured
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Affiliation(s)
- Wan-Qiong Huang
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China.
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11
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Ni W, Huang C, Huang W, Ji P, Song F, Wang C, Liu T, Li M, Guo H, Yu C, Huang Y. A New Pyrazolate Osmium(VI) Nitrido Complex Exhibits Anticancer Activity Through Modulating Protein Homeostasis.. [DOI: 10.21203/rs.3.rs-110247/v1] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
Interest in the third-row transition metal osmium and its compounds as potential anticancer agents has grown in recent years. Here, we synthesized the osmium(VI) nitrido complex Na[OsVI(N)(tpm)2] (tpm= [5-(Thien-2-yl)-1H-pyrazol-3-yl]methanol) that does not have direct binding affinity to DNA. Cellular assays revealed that this new Os complex exhibited anticancer activity against cancer cell lines, cancer stem cells, and cisplatin-resistant cells. The Os complex Na[OsVI(N)(tpm)2] modulates the expression of protein transportation-associated, DNA metabolism-associated and oxidative stress-associated proteins in HepG2 cells. Perturbation of protein expression activity by the Os complex in cancer cells affects the functions of the mitochondria and endoplasmic reticulum, resulting in high levels of cellular oxidative stress and low rates of cell survival. Moreover, it induced caspase-mediated apoptosis of HepG2 cancer cells. The study reveals a new high-valent Os complex as an anticancer agent candidate targeting cancer cell protein homeostasis.
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Affiliation(s)
| | | | | | | | | | | | - Tao Liu
- Shantou University Medical College
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12
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Lu Z, Yang YJ, Ni WX, Li M, Zhao Y, Huang YL, Luo D, Wang X, Omary MA, Li D. Aggregation-induced phosphorescence sensitization in two heptanuclear and decanuclear gold-silver sandwich clusters. Chem Sci 2020; 12:702-708. [PMID: 34163803 PMCID: PMC8179010 DOI: 10.1039/d0sc05095d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/23/2020] [Accepted: 10/29/2020] [Indexed: 02/05/2023] Open
Abstract
The strategy of aggregation-induced emission enhancement (AIEE) has been proven to be efficient in wide areas and has recently been adopted in the field of metal nanoclusters. However, the relationship between atomically precise clusters and AIEE is still unclear. Herein, we have successfully obtained two few-atom heterometallic gold-silver hepta-/decanuclear clusters, denoted Au6Ag and Au9Ag, and determined their structures by X-ray diffraction and mass spectrometry. The nature of the AuI⋯AgI interactions thereof is demonstrated through energy decomposition analysis to be far-beyond typical closed-shell metal-metal interaction dominated by dispersion interaction. Furthermore, a positive correlation has been established between the particle size of the nanoaggregates and the photoluminescence quantum yield for Au6Ag, manifesting AIEE control upon varying the stoichiometric ratio of Au : Ag in atomically-precise clusters.
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Affiliation(s)
- Zhou Lu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
- Department of Chemistry, University of North Texas 1155 Union Circle #305070 Denton Texas 76203 USA
| | - Yu-Jie Yang
- Department of Chemistry, Shantou University Guangdong 515063 P. R. China
| | - Wen-Xiu Ni
- Department of Chemistry, Shantou University Medical College Shantou Guangdong 515041 P. R. China
| | - Mian Li
- Department of Chemistry, Shantou University Guangdong 515063 P. R. China
| | - Yifang Zhao
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College Shantou Guangdong 515041 P. R. China
| | - Dong Luo
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
| | - Xiaoping Wang
- Neutron Scattering Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831-6475 USA
| | - Mohammad A Omary
- Department of Chemistry, University of North Texas 1155 Union Circle #305070 Denton Texas 76203 USA
| | - Dan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University Guangzhou 510632 P. R. China
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13
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Tam TSC, Cheng YH, Lok CN, Au-Yeung HY, Ni WX, Wei XL, Ng KM. Surface optimization of gold nanoparticle mass tags for the sensitive detection of protein biomarkers via immuno-capture LI-MS. Analyst 2020; 145:6237-6242. [PMID: 32839801 DOI: 10.1039/d0an01121e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
HPV-induced cervical cancer is one of the most lethal cancers. Therefore, the development of a reliable and accurate method for the early diagnosis of HPV infections is highly important. Here, gold nanoparticles (AuNPs) were utilized as mass tags in an immuno-capture LI-MS assay for the detection of HPV marker proteins. Through the optimization of the amount of antibodies and surface charges on AuNPs, high antigen detection efficiency with minimal non-specific binding was achieved. With optimized antibody-conjugated AuNPs, low attomole amount of HPV proteins in HeLa cell lysate was quantified.
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Affiliation(s)
- Toby Siu-Chung Tam
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong S.A.R., P. R. China.
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14
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Sun RWY, Xu RF, Song HQ, Saint-Germain C, Zhang M, Ni WX, Chen CX, Hemmert C, Gornitzka H, Li D. A gold(i)–pyrazolato complex as a switch-on luminescent probe for cysteine: in situ formation of fluorescent nanoparticles and rose-like microspheres. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00205f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A gold(i)–pyrazolato complex has been designed as a luminescent probe for cysteine (Cys).
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Affiliation(s)
- Raymond Wai-Yin Sun
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
- Guangzhou Lee & Man Technology Company Limited
| | - Ruo-Fan Xu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
| | - Huan-Quan Song
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
| | - Camille Saint-Germain
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
- Université de Toulouse
| | - Ming Zhang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
| | - Wen-Xiu Ni
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
| | - Chun-Xia Chen
- Guangzhou Lee & Man Technology Company Limited
- Guangzhou
- P. R. China
| | | | | | - Dan Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University 243 Da Xue Road
- Shantou
- P. R. China
- College of Chemistry and Materials Science
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15
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Ni WX, Qiu YM, Li M, Zheng J, Sun RWY, Zhan SZ, Ng SW, Li D. Metallophilicity-Driven Dynamic Aggregation of a Phosphorescent Gold(I)–Silver(I) Cluster Prepared by Solution-Based and Mechanochemical Approaches. J Am Chem Soc 2014; 136:9532-5. [DOI: 10.1021/ja5025113] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Wen-Xiu Ni
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - Yu-Min Qiu
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - Mian Li
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - Ji Zheng
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - Raymond Wai-Yin Sun
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - Shun-Ze Zhan
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
| | - 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 21589, Saudi Arabia
| | - Dan Li
- Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, PR China
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16
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Ni WX, Li M, Zheng J, Zhan SZ, Qiu YM, Ng SW, Li D. Rücktitelbild: Approaching White-Light Emission from a Phosphorescent Trinuclear Gold(I) Cluster by Modulating Its Aggregation Behavior (Angew. Chem. 50/2013). Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201309815] [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: 11/08/2022]
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17
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Ni WX, Li M, Zheng J, Zhan SZ, Qiu YM, Ng SW, Li D. Back Cover: Approaching White-Light Emission from a Phosphorescent Trinuclear Gold(I) Cluster by Modulating Its Aggregation Behavior (Angew. Chem. Int. Ed. 50/2013). Angew Chem Int Ed Engl 2013. [DOI: 10.1002/anie.201309815] [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: 11/09/2022]
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18
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Ni WX, Li M, Zheng J, Zhan SZ, Qiu YM, Ng SW, Li D. Approaching white-light emission from a phosphorescent trinuclear gold(I) cluster by modulating its aggregation behavior. Angew Chem Int Ed Engl 2013; 52:13472-6. [PMID: 24254790 DOI: 10.1002/anie.201308135] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Xiu Ni
- Department of Chemistry and Research Institute for Biomedical and Advanced Materials, Shantou University, Guangdong 515063 (P. R. China)
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19
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Ni WX, Li M, Zheng J, Zhan SZ, Qiu YM, Ng SW, Li D. Approaching White-Light Emission from a Phosphorescent Trinuclear Gold(I) Cluster by Modulating Its Aggregation Behavior. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308135] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Tang Q, Ni WX, Leung CF, Man WL, Lau KKK, Liang Y, Lam YW, Wong WY, Peng SM, Liu GJ, Lau TC. Synthesis and antitumor activity of a series of osmium(vi) nitrido complexes bearing quinolinolato ligands. Chem Commun (Camb) 2013; 49:9980-2. [DOI: 10.1039/c3cc42250j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Ni WX, Man WL, Yiu SM, Ho M, Cheung MTW, Ko CC, Che CM, Lam YW, Lau TC. Osmium(vi) nitrido complexes bearing azole heterocycles: a new class of antitumor agents. Chem Sci 2012. [DOI: 10.1039/c2sc01031c] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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22
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Ni WX, Man WL, Cheung MTW, Sun RWY, Shu YL, Lam YW, Che CM, Lau TC. Osmium(vi) complexes as a new class of potential anti-cancer agents. Chem Commun (Camb) 2011; 47:2140-2. [DOI: 10.1039/c0cc04515b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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23
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Ni WX, Li M, Zhan SZ, Hou JZ, Li D. In Situ Immobilization of Metalloligands: A Synthetic Route to Homometallic Mixed-Valence Coordination Polymers. Inorg Chem 2009; 48:1433-41. [PMID: 19146441 DOI: 10.1021/ic8015244] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen-Xiu Ni
- Department of Chemistry, Shantou University, Guangdong 515063, People’s Republic of China
| | - Mian Li
- Department of Chemistry, Shantou University, Guangdong 515063, People’s Republic of China
| | - Shun-Ze Zhan
- Department of Chemistry, Shantou University, Guangdong 515063, People’s Republic of China
| | - Jin-Zhang Hou
- Department of Chemistry, Shantou University, Guangdong 515063, People’s Republic of China
| | - Dan Li
- Department of Chemistry, Shantou University, Guangdong 515063, People’s Republic of China
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Abstract
In this article, we present a genetic algorithm (GA) as one branch of artificial intelligence (AI) for the optimization-design of the artificial magnetic metamaterial whose structure is automatically generated by computer through the filling element methodology. A representative design example, metamaterials with permeability of negative unity, is investigated and the optimized structures found by the GA are presented. It is also demonstrated that our approach is effective for the synthesis of functional magnetic and electric metamaterials with optimal structures. This GA-based optimization-design technique shows great versatility and applicability in the design of functional metamaterials.
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Affiliation(s)
- P Y Chen
- National Nano Device Laboratories, Hsinchu 30078, Taiwan ROC.
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25
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Zhou XP, Ni WX, Zhan SZ, Ni J, Li D, Yin YG. From Encapsulation to Polypseudorotaxane: Unusual Anion Networks Driven by Predesigned Metal Bis(terpyridine) Complex Cations. Inorg Chem 2007; 46:2345-7. [PMID: 17330968 DOI: 10.1021/ic061927o] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solvothermal reactions of CuSCN, metal (Mn2+, Fe2+, Co2+, Ni2+, Cu2+) sulfate, and terpyridine (2,2':6',2' '-terpyridine or 4'-p-tolyl-2,2':6',2' '-terpyridine) in the presence of triphenylphosphine yielded a series of hybrid coordination compounds, in which in situ formed metal bis(terpyridine) complex cations are encapsulated by a 3D anionic network or entangled by 2D heartlike networks, forming encapsulation or polypseudorotaxane supramolecules. The complex cations play a role as template to direct the fabrication of the structures.
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Affiliation(s)
- Xiao-Ping Zhou
- Department of Chemistry, Shantou University, Guangdong 515063, People's Republic of China
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26
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Ni WX, Li M, Zhou XP, Li Z, Huang XC, Li D. pH-Induced formation of metalloligand: increasing structure dimensionality by tuning number of ligand functional sites. Chem Commun (Camb) 2007:3479-81. [PMID: 17700888 DOI: 10.1039/b705603f] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [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]
Abstract
Two complexes, 2D [Cu(2)(CN)(2)(4-Hpcih)](n) and 3D [[Cu(2)(CN)(1.5)(4-pcih)].1.25H(2)O](n) (4-Hpcih = 4-pyridinecarbaldehyde isonicotinoyl hydrazone), were obtained using a synthetic approach of pH-induced formation of metalloligands, successfully demonstrating a strategy to increase structure dimensionality by tuning the number of ligand functional sites.
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Affiliation(s)
- Wen-Xiu Ni
- Department of Chemistry, Shantou University, Guangdong, 515063, PR China
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27
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Fang YW, Ni WX, Huang C, Xue L, Yu L. [Decoloring and spectral properties analysis of innoxious ultraviolet absorbents]. Guang Pu Xue Yu Guang Pu Fen Xi 2006; 26:1303-5. [PMID: 17020045] [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: 05/12/2023]
Abstract
The ultraviolet absorbent extracted from mango leaves, was discolored by some decoloring agent. Then the spectral properties of the discolored ultraviolet absorbents were analyzed. The discolored method of ultraviolet absorbent was studied by comparing one with the others. The results showed that the discoloring effect was satisfactory by using active carbon, H2O2, citric acid, and oxalic acid as decoloring agent. Specially, when oxalic acid was used as decoloring agent, the color of the production was slight, the rate of production was high, and the absorption effect of ultraviolet ray was well. When the concentration of the ultraviolet absorbent solution is 0.5% (w/w), the ultraviolet ray transmission was smaller than 0.3% in 200-370 nm, and it increased slightly from 370 nm. There was a maximum value at 400 nm, approaching 12%.
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Affiliation(s)
- Yi-Wen Fang
- Department of Chemistry, Shantou University, Shantou 515063, China
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Silver X, Ni WX, Mercer EV, Beck BL, Bossart EL, Inglis B, Mareci TH. In vivo 1H magnetic resonance imaging and spectroscopy of the rat spinal cord using an inductively-coupled chronically implanted RF coil. Magn Reson Med 2001; 46:1216-22. [PMID: 11746589 DOI: 10.1002/mrm.1319] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
An inductively coupled, chronically implanted short-solenoid coil was used to obtain in vivo localized 1H NMR spectra and diffusion-weighted images from a rat spinal cord. A 5 x 8 mm two-turn elliptically shaped solenoid coil was implanted in rats at the site of a T-12 vertebral-level laminectomy. Excitation was achieved solely by a 3 x 3 cm external surface coil, and signal detection was achieved by inductively coupling the external coil to the implanted coil. The image signal-to-noise ratio (SNR) obtained with the inductively-coupled implanted coil was compared with that obtained using a linear or a quadrature external surface coil. The implanted coil provided a gain by over a factor of 3 in SNR. The implanted coil was used to measure localized 1H spectra in vivo at the T13/L1 spinal-cord level within a 1.85 x 1.85 x 4.82 mm (16.5 microL) volume. With 256 averages, a approximately 3-s repetition delay and respiratory gating, a high-quality spectrum was acquired in 13 min. In addition, water translational diffusion was measured in three orthogonal directions using a stimulated-echo imaging sequence, with a short echo time (TE), to produce a quantitative map of diffusion in a rat spinal cord in vivo.
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Affiliation(s)
- X Silver
- Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, Florida 32610-0245, USA
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Larsson MI, Ni WX, Hansson GV. Temperature-induced manipulation of nucleation during Si and Ge molecular-beam epitaxy. Phys Rev B Condens Matter 1994; 50:5335-5344. [PMID: 9976875 DOI: 10.1103/physrevb.50.5335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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30
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Ni WX, Hansson GV. Band offsets in pseudomorphically grown Si/Si1-xGex heterostructures studied with core-level x-ray photoelectron spectroscopy. Phys Rev B Condens Matter 1990; 42:3030-3037. [PMID: 9995796 DOI: 10.1103/physrevb.42.3030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Martensson P, Ni WX, Hansson GV, Nicholls JM, Reihl B. Surface electronic structure of Si(111)7 x 7-Ge and Si(111)5 x 5-Ge studied with photoemission and inverse photoemission. Phys Rev B Condens Matter 1987; 36:5974-5981. [PMID: 9942278 DOI: 10.1103/physrevb.36.5974] [Citation(s) in RCA: 103] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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