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Yao H, Shen Y, Song Z, Han A, Chen X, Zhang Y, Hu B. Rab11 promotes single Mauthner cell axon regeneration in vivo through axon guidance molecule Ntng2b. Exp Neurol 2024; 374:114715. [PMID: 38325655 DOI: 10.1016/j.expneurol.2024.114715] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/23/2024] [Accepted: 02/03/2024] [Indexed: 02/09/2024]
Abstract
Effective axon regeneration within the central nervous system (CNS) is pivotal for achieving functional recovery following spinal cord injury (SCI). Numerous extrinsic and intrinsic factors exert influences on the axon regeneration. While prior studies have demonstrated crucial involvement of specific members the Rab protein family in axon regeneration in the peripheral nervous system (PNS), the precise function of Rab11 in CNS axon regeneration in vivo remains elusive. Thus, our study aimed to elucidate the impact of Rab11 on the axon regeneration of Mauthner cells (M-cells) in zebrafish larvae. Our findings demonstrated that overexpression of Rab11bb via single-cell electroporation significantly promoted axon regeneration in individual M-cells. Conversely, knockdown of Rab11bb inhibited the axon regeneration of M-cells. RNA-seq analysis revealed an upregulation of ntng2b following Rab11bb overexpression. As we hypothesized, overexpression of Ntng2b markedly enhanced axon regeneration, while Ntng2b knockdown in the context of Rab11bb pro-regeneration substantially hindered axon regrowth. In conclusion, our study demonstrated that Rab11 promotes axon regeneration of single M-cell in the CNS through the Rab11/axon guidance/Ntng2b pathway.
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Affiliation(s)
- Huaitong Yao
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Yueru Shen
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Zheng Song
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Along Han
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Xinghan Chen
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Yawen Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Bing Hu
- Hefei National Research Center for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China.
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Shen Y, Chen X, Song Z, Yao H, Han A, Zhang Y, Cai Y, Hu B. MicroRNA-9 promotes axon regeneration of mauthner-cell in zebrafish via her6/ calcium activity pathway. Cell Mol Life Sci 2024; 81:104. [PMID: 38411738 PMCID: PMC10899279 DOI: 10.1007/s00018-024-05117-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 02/28/2024]
Abstract
MicroRNA (miRNA), functioning as a post-transcriptional regulatory element, plays a significant role in numerous regulatory mechanisms and serves as a crucial intrinsic factor influencing axon regeneration. Prior investigations have elucidated the involvement of miRNA-9 in various processes, however, its specific contribution to axon regeneration in the central nervous system (CNS) remains uncertain. Hence, the zebrafish Mauthner axon regeneration model was employed to manipulate the expression of miRNA-9 in single cells, revealing that upregulation of miRNA-9 facilitated axon regeneration. Additionally, her6, a downstream target gene of miRNA-9, was identified as a novel gene associated with axon regeneration. Suppression of her6 resulted in enhanced Mauthner axon regeneration, as evidenced by the significantly improved regenerative capacity observed in her6 knockout zebrafish. In addition, modulation of her6 expression affects intracellular calcium levels in neurons and promoting her6 expression leads to a decrease in calcium levels in vivo using the new NEMOf calcium indicator. Moreover, the administration of the neural activity activator, pentylenetetrazol (PTZ) partially compensated for the inhibitory effect of her6 overexpression on the calcium level and promoted axon regeneration. Taken together, our study revealed a role for miRNA-9 in the process of axon regeneration in the CNS, which improved intracellular calcium activity and promoted axon regeneration by inhibiting the expression of downstream target gene her6. In our study, miRNA-9 emerged as a novel and intriguing target in the intricate regulation of axon regeneration and offered compelling evidence for the intricate relationship between calcium activity and the facilitation of axon regeneration.
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Affiliation(s)
- Yueru Shen
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Xinghan Chen
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Zheng Song
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Huaitong Yao
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Along Han
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Yawen Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Yuan Cai
- First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
| | - Bing Hu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China.
- Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China.
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Xu B, Li S, Han A, Zhou Y, Sun M, Yang H, Zheng L, Shi R, Liu H. Engineering Atomically Dispersed Cu-N 1 S 2 Sites via Chemical Vapor Deposition to Boost Enzyme-Like Activity for Efficient Tumor Therapy. Adv Mater 2023:e2312024. [PMID: 38101802 DOI: 10.1002/adma.202312024] [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: 11/12/2023] [Indexed: 12/17/2023]
Abstract
Single-atom nanozymes (SAzymes), with well-defined and uniform atomic structures, are an emerging type of natural enzyme mimics. Currently, it is important but challenging to rationally design high-performance SAzymes and deeply reveal the interaction mechanism between SAzymes and substrate molecules. Herein, this work reports the controllable fabrication of a unique Cu-N1 S2 -centred SAzyme (Cu-N/S-C) via a chemical vapor deposition-based sulfur-engineering strategy. Benefiting from the optimized geometric and electronic structures of single-atom sites, Cu-N/S-C SAzyme shows boosted enzyme-like activity, especially in catalase-like activity, with a 13.8-fold increase in the affinity to hydrogen peroxide (H2 O2 ) substrate and a 65.2-fold increase in the catalytic efficiency when compared to Cu-N-C SAzyme with Cu-N3 sites. Further theoretical studies reveal that the increased electron density around single-atom Cu is achieved through electron redistribution, and the efficient charge transfer between Cu-N/S-C and H2 O2 is demonstrated to be more beneficial for the adsorption and activation of H2 O2 . The as-designed Cu-N/S-C SAzyme possesses an excellent antitumor effect through the synergy of catalytic therapy and oxygen-dependent phototherapy. This study provides a strategy for the rational design of SAzymes, and the proposed electron redistribution and charge transfer mechanism will help to understand the coordination environment effect of single-atom metal sites on H2 O2 -mediated enzyme-like catalytic processes.
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Affiliation(s)
- Bolong Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shanshan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Along Han
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - You Zhou
- National Center for Orthopaedics, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Mengxue Sun
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Haokun Yang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Rui Shi
- National Center for Orthopaedics, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Huiyu Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials and Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
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Han A, Kim K, Choi H, Noh H, Cho IJ, Lim S, Lee J. 19P Usefulness of Hounsfield unit on computed tomography, serum neutrophil to lymphocyte ratio, and their combination as prognostic factor in patients with breast cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.03.034] [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: 11/01/2022] Open
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Xu B, Li S, Zheng L, Liu Y, Han A, Zhang J, Huang Z, Xie H, Fan K, Gao L, Liu H. A Bioinspired Five-Coordinated Single-Atom Iron Nanozyme for Tumor Catalytic Therapy. Adv Mater 2022; 34:e2107088. [PMID: 35102632 DOI: 10.1002/adma.202107088] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/23/2021] [Indexed: 05/23/2023]
Abstract
Single-atom nanozymes (SAzymes) represent a new research frontier in the biomedical fields. The rational design and controllable synthesis of SAzymes with well-defined electronic and geometric structures are essential for maximizing their enzyme-like catalytic activity and therapeutic efficacy but remain challenging. Here, a melamine-mediated pyrolysis activation strategy is reported for the controllable fabrication of iron-based SAzyme containing five-coordinated structure (FeN5 ), identified by transmission electron microscopy imaging and X-ray absorption fine structure analyses. The FeN5 SAzyme exhibits superior peroxidase-like activity owing to the optimized coordination structure, and the corresponding catalytic efficiency of Fe-species in the FeN5 SAzyme is 7.64 and 3.45 × 105 times higher than those in traditional FeN4 SAzyme and Fe3 O4 nanozyme, respectively, demonstrated by steady-state kinetic assay. In addition, the catalytic mechanism is jointly disclosed by experimental results and density functional theory studies. The as-synthesized FeN5 SAzyme demonstrates significantly enhanced antitumor effect in vitro and in vivo due to the excellent peroxidase-like activity under tumor microenvironment.
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Affiliation(s)
- Bolong Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shanshan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Yunhang Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Along Han
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jin Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhijun Huang
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co. Ltd, Hangzhou, 310003, China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lizeng Gao
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Huiyu Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
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Han A, Park T, Kim H, Min S, Ha J, Min SK. Paclitaxel Coated Balloon Angioplasty vs. Plain Balloon Angioplasty for Haemodialysis Arteriovenous Access Stenosis: A Systematic Review and a Time to Event Meta-Analysis of Randomised Controlled Trials. J Vasc Surg 2021. [DOI: 10.1016/j.jvs.2021.09.005] [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: 12/01/2022]
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Han A, Gingrich J, Yaskina M, Rankin K, Martin-Feeney DS, Mackie A. JUST TRAC IT! TRANSITIONING RESPONSIBLY TO ADULT CARE USING SMART PHONE TECHNOLOGY. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.069] [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] Open
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Yang H, Xu B, Li S, Wu Q, Lu M, Han A, Liu H. A Photoresponsive Nanozyme for Synergistic Catalytic Therapy and Dual Phototherapy. Small 2021; 17:e2007090. [PMID: 33464716 DOI: 10.1002/smll.202007090] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Dual phototherapy, including photodynamic therapy (PDT) and photothermal therapy (PTT), has shown a great prospect in cancer treatment. However, its therapeutic effect is restricted by the depth of light penetration in tissue and tumor hypoxia environment. Herein, inspired by the specific response of nanozymes to the tumor microenvironment (TME), a simple and versatile nanozyme-mediated synergistic dual phototherapy nanoplatform (denoted as FePc/HNCSs) is constructed using hollow nitrogen-doped carbon nanospheres (HNCSs) and iron phthalocyanine (FePc). FePc/HNCSs simultaneously exhibit peroxidase (POD)- and catalase (CAT)-like activities, which not only can convert endogenous hydrogen peroxide (H2 O2 ) into highly toxic hydroxyl radicals (•OH) for catalytic therapy, but also decompose H2 O2 to oxygen (O2 ) to enhance O2 -dependent PDT. In addition, their enzyme-like activities are significantly enhanced under light irradiation. Combining with the excellent photothermal effect, FePc/HNCSs realize a high tumor inhibition rate of 96.3%. This strategy opens a new horizon for exploring a more powerful tumor treatment nanoplatform.
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Affiliation(s)
- Hailong Yang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Bolong Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shanshan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Qingyuan Wu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Mingzhu Lu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Along Han
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Huiyu Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
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Wang S, Long L, Yang X, Qiu Y, Tao T, Peng X, Li Y, Han A, Senadheera DB, Downey JS, Goodman SD, Zhou X, Cvitkovitch DG. Dissecting the Role of VicK Phosphatase in Aggregation and Biofilm Formation of Streptococcus mutans. J Dent Res 2021; 100:631-638. [PMID: 33530836 DOI: 10.1177/0022034520979798] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
VicRK (WalRK or YycFG) is a conserved 2-component regulatory system (TCS) that regulates cell division, cell wall biosynthesis, and homeostasis in low-GC Gram-positive bacteria. VicRK is also associated with biofilm formation of Streptococcus mutans on the tooth surface as it directly regulates the extracellular polysaccharide (EPS) synthesis. Of the 2 components, VicK possesses both autokinase and phosphatase activities, which regulate the phosphorylation and dephosphorylation of the regulator VicR in response to environmental cues. However, the dual mechanism of VicK as the autokinase/phosphatase in regulating S. mutans' responses is not well elucidated. Previously, it has been shown that the phosphatase activity depends on the PAS domain and residues in the DHp domain of VicK in S. mutans. Specifically, mutating proline at 222 in the PAS domain inhibits VicK phosphatase activity. We generated a VicKP222A mutant to determine the level of VicR-P in the cytoplasm by Phos-tag sodium dodecyl sulfate polyacrylamide gel electrophoresis. We show that in VicKP222A phosphatase, attenuation increased phosphorylated VicR (VicR-P) that downregulated glucosyltransferases, gtfBC, thereby reducing the synthesis of water-insoluble polysaccharides (WIS-EPS) in the biofilm. In addition, VicKP222A presented as long-rod cells, reduced growth, and displayed asymmetrical division. A major adhesin of S. mutans, SpaP was downregulated in VicKP222A, making it unable to agglutinate in saliva. In summary, we have confirmed that VicK phosphatase activity is critical to maintain optimal phosphorylation status of VicR in S. mutans, which is important for cell growth, cell division, EPS synthesis, and bacterial agglutination in saliva. Hence, VicK phosphatase activity may represent a promising target to modulate S. mutans' pathogenicity.
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Affiliation(s)
- S Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Long
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Qiu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - T Tao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Peng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - A Han
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen University Xiang'an Campus, Xiamen, Fujian, China
| | - D B Senadheera
- School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
| | - J S Downey
- Division of Biomedical Sciences, Herman Ostrow School of Dentistry of University of Southern California, Los Angeles, CA, USA
| | - S D Goodman
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - X Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D G Cvitkovitch
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
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Monnot G, Dai Z, Han A, de Jong A, Christiano A. 096 Identification of T cell receptor α and β chains responsible for AA pathogenesis via single cell TCR sequencing. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.172] [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: 10/27/2022]
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Kavuri SM, Devarakonda V, Williams LC, Seker S, Lei JT, Singh P, Han A, Anurag M, Holloway KR, Welm AL, Ellis MJ. Abstract P6-17-15: Evaluating preclinical efficacy of anti-HER2 drug combinations using ER+/HER2 mutant models. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-17-15] [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: 11/16/2022]
Abstract
Abstract
Background
Until recently, HER2 gene amplification was the only mechanism of HER2 activation recognized. However, activating HER2 mutations have been noted in different cancer types. A trials of HER2 mutant breast cancer and the subsequent SUMMIT trial data have shown that monotherapy with the pan-HER drug neratinib as showed clinical efficacy, but with poor response durability. This study therefore investigates the preclinical efficacy of anti HER2 agents alone or in combination with endocrine therapy agents or in combination with CDK4/6 inhibitors using ER+/HER2 mutant cell lines and ex vivo HER2 mutant patient derived xenograft (PDX) model to define a more effective treatment approach.
Methods
ER+ breast cancer cell lines (T47D and MCF7) stably expressing HER2V777L, and ER+/HER2 mutant PDX model (HER2G778_P780 dup) were used to examine HER2 signaling and drug responses. Signaling downstream mutant HER2 was examined by immunoblot analysis. Effects of neratinib alone, neratinib + fulvestrant, and neratinib + abemaciclib on cell growth were examined in ER+/HER2 mutant cell lines and in an ex vivo HER2G778_P780 dup.
Results
We found that MCF7/T47D cells expressing HER2V777L and HER2G778_P780 dup PDX tumors showed strongly activated autophosphorylation of HER2 and increased expression of CDK4, CDK6, phospho-Rb, and cyclin D1 as compared to MCF7/T47D cells expressing HER2WT or ER+/non-HER2mut PDX modes, suggesting that HER2 mutations preferentially depend on CDK4/6 signaling for cell growth. Additionally, we showed that activating MCF7 HER2 V777L cause resistance to endocrine therapy treatment (fulvestrant IC50 >5μM). Further, we show that neratinib alone is effective at higher concentrations (IC50 < 2μM) in MCF7/HER2 V777L cells. We also demonstrate that abemaciclib alone exhibited moderate activity against MCF7 HER2 V777L cells (IC50 < 0.4μM) and additional activity in combination with neratinib (IC50 < 0.06μM) was seen. Moreover, ex vivo HER2 G778_P780 dup cells are relatively resistant to fulvestrant alone (IC50 < 0.2μM), neratinib alone (IC50 < 0.006μM), abemaciclib alone (IC50 < 0.04μM), and neratinib in combination with abemaciclib (IC50 < 0.005μM), suggesting that patients harboring ER+/HER2-mutant tumors may benefit from neratinib in combination with abemaciclib.
Conclusion
These preclinical data suggest that neratinib monotherapy may not be effective to treat ER+/HER2 mutant patients and we propose that simultaneous targeting of both HER2 and the CDK4/6 axis will be required for effective treatment of ER+ breast cancers harboring HER2 activating mutations.
Citation Format: Kavuri SM, Devarakonda V, Williams LC, Seker S, Lei JT, Singh P, Han A, Anurag M, Holloway KR, Welm AL, Ellis MJ. Evaluating preclinical efficacy of anti-HER2 drug combinations using ER+/HER2 mutant models [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-17-15.
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Affiliation(s)
- SM Kavuri
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - V Devarakonda
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - LC Williams
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - S Seker
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - JT Lei
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - P Singh
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - A Han
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - M Anurag
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - KR Holloway
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - AL Welm
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - MJ Ellis
- Baylor College of Medicine, Lester and Sue Smith Breast Center, Houston, TX; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
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Matsunuma R, Chan DW, Kim BJ, Singh P, Han A, Saltzman A, Cheng C, Lei JT, Sahin E, Leng M, Fan C, Perou CM, Malovannaya A, Ellis MJ. Abstract P5-08-01: DPYSL3 modulates mitosis, migration and epithelial to mesenchymal transition in claudin-low breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-08-01] [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: 11/16/2022]
Abstract
Abstract
Proteogenomics is the field of integrating data from mass spectrometry-based shotgun proteomics, and phosphoproteomics into next-generation RNA and DNA sequencing data analysis pipelines that promises new insights into cancer biology and therapeutic targeting. As well as analyses of clinical samples for disease phenotype association analysis, the application of proteogenomics to model systems also has considerable potential. A Clinical Proteomic Tumor Analysis Consortium (CPTAC) proteogenomic analysis prioritized dihydropyrimidinase-like-3 (DPYSL3) as a multi-level (RNA/Protein/Phosphoprotein) expression outlier specific to the Claudin-Low (CLOW) subset of triple negative breast cancers. A Pubmed informatics tool indicated a paucity of data in the context of breast cancer which further prioritized DPYSL3 for study.
DPYSL3 was identified as a protein that is regulated during neuronal differentiation in the cerebral cortex and in neuronal cell lines and plays a role in regulating neurite outgrowth somehow through an association with vesicles in the growth cone. In addition, DPYSL3 expression has been observed in several malignant tumors, including prostate cancer, pancreatic cancer, gastric cancer and neuroblastoma. DPYSL3 is reported to play a role in cell migration and metastasis suppression in prostate cancer. However, in pancreatic cancer, DPYSL3 is positively associated with liver metastasis and poor outcome.
DPYSL3 knock-down in DPYSL3 (+) CLOW cell lines demonstrated reduced proliferation, yet enhanced motility and increased expression of Epithelial to Mesenchymal Transition (EMT) markers suggesting that DPYSL3 is a multi-functional signaling modulator. Slower proliferation in DPYSL3 (-) CLOW cells was associated with accumulation of multi-nucleated cells indicating a mitotic defect that was associated with a collapse of the vimentin (VIM) microfilament networkinduced by VIM hyperphosphorylation. On the other hand, DPYSL3 suppressed the expression of EMT regulators TWIST and SNAIL and opposed p21 activated kinase 2 (PAK2) dependent migration, but these EMT regulators in turn induced DPYSL3 expression, suggesting DPYSL3 participates in negative feedback in EMT. Cell migration in DPYSL3 (-) cells correlated with increased phosphorylation of PAK2 on Ser20 and was sensitive to PAK2 siRNA and pharmacological PAK inhibition.Immunoprecipitation and mass spectrometry-based proteomics or western blotting strongly suggests that PAKs interact such that DPYSL3 may function as a direct negative regulator of PAK family kinases. Thus, a PAK inhibitor could potentially mitigate increase migration as an adverse effect of DPYSL3 suppression.
In conclusion, DPYSL3 is a remarkable multifunctional signaling scaffold that should be examined further to provide insights into the stem cell-like state of claudin-low breast cancers, particularly in terms of their cell cycle dependencies, migratory activity and capacity for EMT.
Citation Format: Matsunuma R, Chan DW, Kim B-J, Singh P, Han A, Saltzman A, Cheng C, Lei JT, Sahin E, Leng M, Fan C, Perou CM, Malovannaya A, Ellis MJ. DPYSL3 modulates mitosis, migration and epithelial to mesenchymal transition in claudin-low breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-08-01.
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Affiliation(s)
- R Matsunuma
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - DW Chan
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - B-J Kim
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - P Singh
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - A Han
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - A Saltzman
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - C Cheng
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - JT Lei
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - E Sahin
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - M Leng
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - C Fan
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - CM Perou
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - A Malovannaya
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
| | - MJ Ellis
- Baylor College of Medicine, Houston, TX; Hamamatsu University School of Medicine, Hamamatsu, Japan; Hamamatsu Oncology Center, Hamamatsu, Japan; Yonsei University Wonju College of Medicine, Wonju, Korea; University of North Carolina, Chapel Hill, NC
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Ranamukhaarachchi SK, Modi RN, Han A, Velez DO, Kumar A, Engler AJ, Fraley SI. Macromolecular crowding tunes 3D collagen architecture and cell morphogenesis. Biomater Sci 2019; 7:618-633. [PMID: 30515503 PMCID: PMC6375559 DOI: 10.1039/c8bm01188e] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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: 12/19/2022]
Abstract
Collagen I is the primary extracellular matrix component of most solid tumors and influences metastatic progression. Collagen matrix engineering techniques are useful for understanding how this complex biomaterial regulates cancer cell behavior and for improving in vitro cancer models. Here, we establish an approach to tune collagen fibril architecture using PEG as an inert molecular crowding agent during gelation and cell embedding. We find that crowding produces matrices with tighter fibril networks that are less susceptible to proteinase mediated degradation, but does not significantly alter matrix stiffness. The resulting matrices have the effect of preventing cell spreading, confining cells, and reducing cell contractility. Matrix degradability and fibril length are identified as strong predictors of cell confinement. Further, the degree of confinement predicts whether breast cancer cells will ultimately undergo individual or collective behaviors. Highly confined breast cancer cells undergo morphogenesis to form either invasive networks reminiscent of aggressive tumors or gland and lobule structures reminiscent of normal breast epithelia. This morphological transition is accompanied by expression of cell-cell adhesion genes, including PECAM1 and ICAM1. Our study suggests that cell confinement, mediated by matrix architecture, is a design feature that tunes the transcriptional and morphogenic state of breast cancer cells.
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Affiliation(s)
- S K Ranamukhaarachchi
- Bioengineering, University of California San Diego Jacobs School of Engineering, La Jolla, California, USA.
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Kusari A, Han A, Eichenfield L. 589 Use of electronic health record (EHR) tools and interactive didactics to empower pediatricians to manage atopic dermatitis (AD). J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.597] [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: 10/17/2022]
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Kusari A, Ahluwalia J, Han A, Dohil M. 355 Clinical diagnosis and role of molecular techniques in diagnosis of encephalocraniocutaneous lipomatosis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.361] [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: 11/25/2022]
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Kusari A, Borok J, Han A, Valderrama A, Friedlander S. 358 Plantar distribution of hand-foot skin reaction related to use of a multikinase inhibitor and hard orthotic shoes in a pediatric patient. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.364] [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: 11/24/2022]
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Abstract
There are two well-known ultrasonic approaches to extract sets of quantitative parameters: Lizzi-Feleppa (LF) parameters: slope, intercept, and midband; and quantitative ultrasound (QUS)-derived parameters: effective scatterer diameter (ESD) and effective acoustic concentration (EAC). In this study, the relation between the LF and QUS-derived parameters is studied theoretically and experimentally on ex vivo mouse livers. As expected from the theory, LF slope is correlated to ESD ([Formula: see text]), and from experimental data, LF midband is correlated to EAC ([Formula: see text]). However, LF intercept is not correlated to ESD ([Formula: see text]) nor EAC ([Formula: see text]). The unexpected correlation observed between LF slope and EAC ([Formula: see text]) results likely from the high correlation between ESD and EAC due to the inversion process. For a liver fat percentage estimation, an important potential medical application, the parameters presenting the better correlation are EAC ([Formula: see text]) and LF midband ([Formula: see text]).
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Affiliation(s)
- P. Muleki-Seya
- Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 N. Mathews, Urbana, IL 61801
| | - A. Han
- Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 N. Mathews, Urbana, IL 61801
| | - M. P. Andre
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, San Diego, CA 92093
| | - J. W. Erdman
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 905 S. Goodwin, Urbana, IL. 61801
| | - W. D. O’Brien
- Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 405 N. Mathews, Urbana, IL 61801
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Han A, Kim BJ, Chan DW, Matsunuma R, Singh P, Ellis MJ. Abstract P5-06-01: Proteomic analysis of conserved kinases between PDX tumors and corresponding PDX-derived cell lines. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-06-01] [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: 11/16/2022]
Abstract
Abstract
(Background) Patient-derived xenograft (PDX)s are valuable models for precision oncology as they are thought to recapitulate the biological and genomic characteristics of the human tumors they were derived from. Even though this model is widely used, it is still difficult to manipulate genes in this system and it is not as convenient as in vitro cell culture for drug sensitivity screening. On the other hand in vitro cell cultures have a highly artificial microenvironment and also have undergone selection which might generate misleading data. To address these issues cell lines from PDX tumors with different intrinsic subtypes were characterized by kinobead precipitation/mass spectrometry analysis (KiP/MS) to profile each PDX line in vivo and ex vivo for therapeutic targets.
(Materials and Methods)Washington University Human in Mice (WHIM) tumors and Hutsman Cancer Institute (HCI) tumors were transplanted into mammary fat pads of female severe combined immunodeficiency/beige (SCID/beige) mice. PDXs tumors were harvested when they reached 1˜1.5cm. PDX tumor-derived ex vivo cells/organoids were routinely cultured with Rock inhibitor support. Estradiol was applied only for the tumors originating from E2 supplementation in vivo. Cells and tumors were harvested and lysed by sonication. Kinases in soluble lysates are enriched with drug-bound beads (kinobead) and digested with trypsin. Digested peptides are analyzed by mass spectrometry.
(Results) 5 of WHIM tumors and 4 of HCI tumors were successfully dissociated and cultured ex vivo for further analysis and experiments. Hierarchical clustering of tumors and corresponding cells showed ex vivo cultured cells cluster together with their original PDX tumors. Tumors/ex vivo cultured cells clustered by intrinsic subtype and enrichment analysis identified specific kinases for each PDX tumor/cell line. The WHIM 4 tumor-cell pair showed high level of PIM kinase and EGFR and other PDX tumors such as WHIM18, WHIM 20 (Luminal subtypes), WHIM 35(HER2 enriched subtype) also showed model unique intrinsic kinases, such as JAK2 for WHIM18, EPHB4 for WHIM20.
(Conclusion) PDX tumor-derived ex vivo lines could be routinely cultured with Rock inhibitor support. Each PDX tumor and cell line pair were cluster together in hierarchical clustering and categorized into the same intrinsic subtype based on kinome profiling, suggesting these cells maintain their tumor specific intrinsic kinase signaling. A subset of kinases exhibit activity/expression that is conserved after ex vivo culture, we hypothesize these are intrinsic kinases might be promising target for treatment, because they are tumor intrinsic, i.e. their high expression is maintained despite the strong contrast in the microenvironment of in vitro versus in vitro growth. Ongoing studies with drugs and knock down reagents are examining whether the in vivo/ex vivo comparative KIP analysis indeed identifies therapeutic targets, which will be presented at the meeting more in detail.
Citation Format: Han A, Kim B-J, Chan DW, Matsunuma R, Singh P, Ellis MJ. Proteomic analysis of conserved kinases between PDX tumors and corresponding PDX-derived cell lines [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-06-01.
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Affiliation(s)
- A Han
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
| | - B-J Kim
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
| | - DW Chan
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
| | - R Matsunuma
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
| | - P Singh
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
| | - MJ Ellis
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX; Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
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19
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Velez DO, Tsui B, Goshia T, Chute CL, Han A, Carter H, Fraley SI. 3D collagen architecture induces a conserved migratory and transcriptional response linked to vasculogenic mimicry. Nat Commun 2017; 8:1651. [PMID: 29162797 PMCID: PMC5698427 DOI: 10.1038/s41467-017-01556-7] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [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: 12/05/2016] [Accepted: 09/29/2017] [Indexed: 12/31/2022] Open
Abstract
The topographical organization of collagen within the tumor microenvironment has been implicated in modulating cancer cell migration and independently predicts progression to metastasis. Here, we show that collagen matrices with small pores and short fibers, but not Matrigel, trigger a conserved transcriptional response and subsequent motility switch in cancer cells resulting in the formation of multicellular network structures. The response is not mediated by hypoxia, matrix stiffness, or bulk matrix density, but rather by matrix architecture-induced β1-integrin upregulation. The transcriptional module associated with network formation is enriched for migration and vasculogenesis-associated genes that predict survival in patient data across nine distinct tumor types. Evidence of this gene module at the protein level is found in patient tumor slices displaying a vasculogenic mimicry (VM) phenotype. Our findings link a collagen-induced migration program to VM and suggest that this process may be broadly relevant to metastatic progression in solid human cancers. Extracellular matrix plays a central role in driving cancer development. Here the authors using an in vitro approach show that confining collagen architectures induce fast and persistent cell migration and the formation of multicellular network structures linked to vascular mimicry observed in tumours from patients.
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Affiliation(s)
- D O Velez
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - B Tsui
- Bioinformatics and Systems Biology Program, University of California, San Diego, La Jolla, CA, 92093, USA
| | - T Goshia
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - C L Chute
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - A Han
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - H Carter
- Department of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA.,Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA
| | - S I Fraley
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, 92093, USA. .,Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA.
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Judd A, Zangerle R, Touloumi G, Warszawski J, Meyer L, Dabis F, Mary Krause M, Ghosn J, Leport C, Wittkop L, Reiss P, Wit F, Prins M, Bucher H, Gibb D, Fätkenheuer G, Julia DA, Obel N, Thorne C, Mocroft A, Kirk O, Stephan C, Pérez-Hoyos S, Hamouda O, Bartmeyer B, Chkhartishvili N, Noguera-Julian A, Antinori A, d’Arminio Monforte A, Brockmeyer N, Prieto L, Rojo Conejo P, Soriano-Arandes A, Battegay M, Kouyos R, Mussini C, Tookey P, Casabona J, Miró JM, Castagna A, Konopnick D, Goetghebuer T, Sönnerborg A, Quiros-Roldan E, Sabin C, Teira R, Garrido M, Haerry D, de Wit S, Miró JM, Costagliola D, d’Arminio-Monforte A, Castagna A, del Amo J, Mocroft A, Raben D, Chêne G, Judd A, Pablo Rojo C, Barger D, Schwimmer C, Termote M, Wittkop L, Campbell M, Frederiksen CM, Friis-Møller N, Kjaer J, Raben D, Salbøl Brandt R, Berenguer J, Bohlius J, Bouteloup V, Bucher H, Cozzi-Lepri A, Dabis F, d’Arminio Monforte A, Davies MA, del Amo J, Dorrucci M, Dunn D, Egger M, Furrer H, Grabar S, Guiguet M, Judd A, Kirk O, Lambotte O, Leroy V, Lodi S, Matheron S, Meyer L, Miro JM, Mocroft A, Monge S, Nakagawa F, Paredes R, Phillips A, Puoti M, Rohner E, Schomaker M, Smit C, Sterne J, Thiebaut R, Thorne C, Torti C, van der Valk M, Wittkop L, Tanser F, Vinikoor M, Macete E, Wood R, Stinson K, Garone D, Fatti G, Giddy J, Malisita K, Eley B, Fritz C, Hobbins M, Kamenova K, Fox M, Prozesky H, Technau K, Sawry S, Benson CA, Bosch RJ, Kirk GD, Boswell S, Mayer KH, Grasso C, Hogg RS, Richard Harrigan P, Montaner JSG, Yip B, Zhu J, Salters K, Gabler K, Buchacz K, Brooks JT, Gebo KA, Moore RD, Moore RD, Rodriguez B, Horberg MA, Silverberg MJ, Thorne JE, Rabkin C, Margolick JB, Jacobson LP, D’Souza G, Klein MB, Rourke SB, Rachlis AR, Cupido P, Hunter-Mellado RF, Mayor AM, John Gill M, Deeks SG, Martin JN, Patel P, Brooks JT, Saag MS, Mugavero MJ, Willig J, Eron JJ, Napravnik S, Kitahata MM, Crane HM, Drozd DR, Sterling TR, Haas D, Rebeiro P, Turner M, Bebawy S, Rogers B, Justice AC, Dubrow R, Fiellin D, Gange SJ, Anastos K, Moore RD, Saag MS, Gange SJ, Kitahata MM, Althoff KN, Horberg MA, Klein MB, McKaig RG, Freeman AM, Moore RD, Freeman AM, Lent C, Kitahata MM, Van Rompaey SE, Crane HM, Drozd DR, Morton L, McReynolds J, Lober WB, Gange SJ, Althoff KN, Abraham AG, Lau B, Zhang J, Jing J, Modur S, Wong C, Hogan B, Desir F, Liu B, You B, Cahn P, Cesar C, Fink V, Sued O, Dell’Isola E, Perez H, Valiente J, Yamamoto C, Grinsztejn B, Veloso V, Luz P, de Boni R, Cardoso Wagner S, Friedman R, Moreira R, Pinto J, Ferreira F, Maia M, Célia de Menezes Succi R, Maria Machado D, de Fátima Barbosa Gouvêa A, Wolff M, Cortes C, Fernanda Rodriguez M, Allendes G, William Pape J, Rouzier V, Marcelin A, Perodin C, Tulio Luque M, Padgett D, Sierra Madero J, Crabtree Ramirez B, Belaunzaran P, Caro Vega Y, Gotuzzo E, Mejia F, Carriquiry G, McGowan CC, Shepherd BE, Sterling T, Jayathilake K, Person AK, Rebeiro PF, Giganti M, Castilho J, Duda SN, Maruri F, Vansell H, Ly PS, Khol V, Zhang FJ, Zhao HX, Han N, Lee MP, Li PCK, Lam W, Chan YT, Kumarasamy N, Saghayam S, Ezhilarasi C, Pujari S, Joshi K, Gaikwad S, Chitalikar A, Merati TP, Wirawan DN, Yuliana F, Yunihastuti E, Imran D, Widhani A, Tanuma J, Oka S, Nishijima T, Na S, Choi JY, Kim JM, Sim BLH, Gani YM, David R, Kamarulzaman A, Syed Omar SF, Ponnampalavanar S, Azwa I, Ditangco R, Uy E, Bantique R, Wong WW, Ku WW, Wu PC, Ng OT, Lim PL, Lee LS, Ohnmar PS, Avihingsanon A, Gatechompol S, Phanuphak P, Phadungphon C, Kiertiburanakul S, Sungkanuparph S, Chumla L, Sanmeema N, Chaiwarith R, Sirisanthana T, Kotarathititum W, Praparattanapan J, Kantipong P, Kambua P, Ratanasuwan W, Sriondee R, Nguyen KV, Bui HV, Nguyen DTH, Nguyen DT, Cuong DD, An NV, Luan NT, Sohn AH, Ross JL, Petersen B, Cooper DA, Law MG, Jiamsakul A, Boettiger DC, Ellis D, Bloch M, Agrawal S, Vincent T, Allen D, Smith D, Rankin A, Baker D, Templeton DJ, O’Connor CC, Thackeray O, Jackson E, McCallum K, Ryder N, Sweeney G, Cooper D, Carr A, Macrae K, Hesse K, Finlayson R, Gupta S, Langton-Lockton J, Shakeshaft J, Brown K, Idle S, Arvela N, Varma R, Lu H, Couldwell D, Eswarappa S, Smith DE, Furner V, Smith D, Cabrera G, Fernando S, Cogle A, Lawrence C, Mulhall B, Boyd M, Law M, Petoumenos K, Puhr R, Huang R, Han A, Gunathilake M, Payne R, O’Sullivan M, Croydon A, Russell D, Cashman C, Roberts C, Sowden D, Taing K, Marshall P, Orth D, Youds D, Rowling D, Latch N, Warzywoda E, Dickson B, Donohue W, Moore R, Edwards S, Boyd S, Roth NJ, Lau H, Read T, Silvers J, Zeng W, Hoy J, Watson K, Bryant M, Price S, Woolley I, Giles M, Korman T, Williams J, Nolan D, Allen A, Guelfi G, Mills G, Wharry C, Raymond N, Bargh K, Templeton D, Giles M, Brown K, Hoy J. Comparison of Kaposi Sarcoma Risk in Human Immunodeficiency Virus-Positive Adults Across 5 Continents: A Multiregional Multicohort Study. Clin Infect Dis 2017; 65:1316-1326. [PMID: 28531260 PMCID: PMC5850623 DOI: 10.1093/cid/cix480] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/19/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND We compared Kaposi sarcoma (KS) risk in adults who started antiretroviral therapy (ART) across the Asia-Pacific, South Africa, Europe, Latin, and North America. METHODS We included cohort data of human immunodeficiency virus (HIV)-positive adults who started ART after 1995 within the framework of 2 large collaborations of observational HIV cohorts. We present incidence rates and adjusted hazard ratios (aHRs). RESULTS We included 208140 patients from 57 countries. Over a period of 1066572 person-years, 2046 KS cases were diagnosed. KS incidence rates per 100000 person-years were 52 in the Asia-Pacific and ranged between 180 and 280 in the other regions. KS risk was 5 times higher in South African women (aHR, 4.56; 95% confidence intervals [CI], 2.73-7.62) than in their European counterparts, and 2 times higher in South African men (2.21; 1.34-3.63). In Europe, Latin, and North America KS risk was 6 times higher in men who have sex with men (aHR, 5.95; 95% CI, 5.09-6.96) than in women. Comparing patients with current CD4 cell counts ≥700 cells/µL with those whose counts were <50 cells/µL, the KS risk was halved in South Africa (aHR, 0.53; 95% CI, .17-1.63) but reduced by ≥95% in other regions. CONCLUSIONS Despite important ART-related declines in KS incidence, men and women in South Africa and men who have sex with men remain at increased KS risk, likely due to high human herpesvirus 8 coinfection rates. Early ART initiation and maintenance of high CD4 cell counts are essential to further reducing KS incidence worldwide, but additional measures might be needed, especially in Southern Africa.
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Abstract
An impedance spectroscopy-based cell/particle position detection method in microfluidic systems is presented. A single pair of non-parallel surface microelectrodes was utilized to detect the transverse positions of particles/cells flowing in a microchannel without the need for a multi-electrode multi-channel impedance detection. This method can be a simple solution for high-throughput and low-cost position detection in microfluidic sorting and separation applications.
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Affiliation(s)
- H Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - N Sobahi
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA.
| | - A Han
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA. and Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA and Center for Remote Healthcare Technology and Systems (CRHTS), Texas A&M University, College Station, TX 77843, USA
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Tollinche LE, Tan KS, Oskar S, Han A. Abstract PR463. Anesth Analg 2016. [DOI: 10.1213/01.ane.0000492850.51392.2d] [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: 11/05/2022]
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Li M, Zhao F, Zhang X, Shi F, Zhu H, Han A, Zhang Y, Kong L, Yu J. Involved-field irradiation in definitive chemoradiotherapy for T4 squamous cell carcinoma of the esophagus. ACTA ACUST UNITED AC 2016; 23:e131-7. [PMID: 27122981 DOI: 10.3747/co.23.2846] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Definitive concurrent chemoradiotherapy (ccrt) is currently a therapeutic option for locally advanced esophageal cancer. However, clinical practice differs with respect to the target volume for irradiation. The purpose of the present study was to analyze failure patterns and survival, and to determine the feasibility of using involved-field irradiation (ifi) with concurrent chemotherapy for T4 squamous cell carcinoma (scc) of the esophagus. METHODS Between January 2003 and January 2013, 56 patients with clinical T4M0 scc of the esophagus received ccrt using ifi. The radiation field included the primary tumour and clinically involved lymph nodes. Target volumes and sites of failure were analyzed, as were treatment-related toxicity and survival time. RESULTS In this 56-patient cohort, 13 patients (23.2%) achieved a complete response, and 21 (37.5%) achieved a partial response, for a total response rate of 60.7%. The major toxicities experienced were leucocytopenia and esophagitis, with 14 patients (25.0%) experiencing grade 3 toxicities. At a median follow-up of 34 months, 48 patients (85.7%) had experienced failure: 39 (69.6%) in-field, 7 (12.5%) elective nodal, and 19 (33.9%) distant. Only 1 patient (1.8%) experienced isolated elective nodal failure. The 1-, 2-, and 3-year survival rates were 39.3%, 21.4%, and 12.5% respectively. CONCLUSIONS For patients with T4M0 scc of the esophagus, definitive ccrt using ifi resulted in an acceptable rate of isolated elective nodal failure and an overall survival comparable to that achieved with elective nodal irradiation. A limited radiation therapy target volume, including only clinically involved lesions, would therefore be a feasible choice for this patient subgroup.
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Affiliation(s)
- M Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - F Zhao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - X Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - F Shi
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - H Zhu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - A Han
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - Y Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - L Kong
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
| | - J Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, P.R.C
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Han A, Sung E, Platen P. Oral contraception and the menstrual cycle in exercise science and sports medicine research – Should it be considered? J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.451] [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: 11/15/2022]
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Hillebrandt H, Thompson B, Han A, Janse de Jonge X. Oral contraception and the menstrual cycle in exercise science and sports medicine research – Should it be considered? J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.448] [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: 11/16/2022]
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Schaumberg M, Janse De Jonge X, Hillebrandt H, Fisher R, Minahan C, Han A. Oral contraception and the menstrual cycle in exercise science and sports medicine research should it be considered? J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.445] [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: 11/28/2022]
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Janse de Jonge X, Han A, Thompson B. Oral contraception and the menstrual cycle in exercise science and sports medicine research – Should it be considered? J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.446] [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: 10/22/2022]
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Andre M, Heba E, Han A, Lin S, Wolfson T, Ang B, Gamst A, Erdman J, O'Brien W, Sirlin C, Loomba R. WE-EF-210-05: Diagnosis and Quantification of Liver Steatosis with Quantitative Ultrasound Backscatter Technique. Med Phys 2015. [DOI: 10.1118/1.4926028] [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: 11/07/2022] Open
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Urh A, Romano N, Han A, Ribeiro J, Yano N, Kim K, Singh R, Moore R. Determination of HE4-mediated roles in tumor immune system modulation in epithelial ovarian cancer (EOC). Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.435] [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: 11/25/2022]
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Hollenberg MD, Mihara K, Polley D, Suen JY, Han A, Fairlie DP, Ramachandran R. Biased signalling and proteinase-activated receptors (PARs): targeting inflammatory disease. Br J Pharmacol 2014; 171:1180-94. [PMID: 24354792 DOI: 10.1111/bph.12544] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 11/13/2013] [Accepted: 11/26/2013] [Indexed: 12/13/2022] Open
Abstract
Although it has been known since the 1960s that trypsin and chymotrypsin can mimic hormone action in tissues, it took until the 1990s to discover that serine proteinases can regulate cells by cleaving and activating a unique four-member family of GPCRs known as proteinase-activated receptors (PARs). PAR activation involves the proteolytic exposure of its N-terminal receptor sequence that folds back to function as a 'tethered' receptor-activating ligand (TL). A key N-terminal arginine in each of PARs 1 to 4 has been singled out as a target for cleavage by thrombin (PARs 1, 3 and 4), trypsin (PARs 2 and 4) or other proteases to unmask the TL that activates signalling via Gq , Gi or G12 /13 . Similarly, synthetic receptor-activating peptides, corresponding to the exposed 'TL sequences' (e.g. SFLLRN-, for PAR1 or SLIGRL- for PAR2) can, like proteinase activation, also drive signalling via Gq , Gi and G12 /13 , without requiring receptor cleavage. Recent data show, however, that distinct proteinase-revealed 'non-canonical' PAR tethered-ligand sequences and PAR-activating agonist and antagonist peptide analogues can induce 'biased' PAR signalling, for example, via G12 /13 -MAPKinase instead of Gq -calcium. This overview summarizes implications of this 'biased' signalling by PAR agonists and antagonists for the recognized roles the PARs play in inflammatory settings.
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Affiliation(s)
- M D Hollenberg
- Inflammation Research Network-Snyder Institute for Chronic Disease, Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada; Faculty of Medicine, Department of Medicine, University of Calgary, Calgary, AB, Canada
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Han A, Ozturk I, Banti C, Kourkoumelis N, Manoli M, Tasiopoulos A, Owczarzak A, Kubicki M, Hadjikakou S. Antimony(III) halide compounds of thioureas: Structures and biological activity. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Suen JY, Cotterell A, Lohman RJ, Lim J, Han A, Yau MK, Liu L, Cooper MA, Vesey DA, Fairlie DP. Pathway-selective antagonism of proteinase activated receptor 2. Br J Pharmacol 2014; 171:4112-24. [PMID: 24821440 DOI: 10.1111/bph.12757] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/04/2014] [Accepted: 04/30/2014] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Proteinase activated receptor 2 (PAR2) is a GPCR associated with inflammation, metabolism and disease. Clues to understanding how to block PAR2 signalling associated with disease without inhibiting PAR2 activation in normal physiology could be provided by studies of biased signalling. EXPERIMENTAL APPROACH PAR2 ligand GB88 was profiled for PAR2 agonist and antagonist properties by several functional assays associated with intracellular G-protein-coupled signalling in vitro in three cell types and with PAR2-induced rat paw oedema in vivo. KEY RESULTS In HT29 cells, GB88 was a PAR2 antagonist in terms of Ca(2+) mobilization and PKC phosphorylation, but a PAR2 agonist in attenuating forskolin-induced cAMP accumulation, increasing ERK1/2 phosphorylation, RhoA activation, myosin phosphatase phosphorylation and actin filament rearrangement. In CHO-hPAR2 cells, GB88 inhibited Ca(2+) release, but activated G(i/o) and increased ERK1/2 phosphorylation. In human kidney tubule cells, GB88 inhibited cytokine secretion (IL6, IL8, GM-CSF, TNF-α) mediated by PAR2. A rat paw oedema induced by PAR2 agonists was also inhibited by orally administered GB88 and compared with effects of locally administered inhibitors of G-protein coupled pathways. CONCLUSIONS AND IMPLICATIONS GB88 is a biased antagonist of PAR2 that selectively inhibits PAR2/G(q/11)/Ca(2+)/PKC signalling, leading to anti-inflammatory activity in vivo, while being an agonist in activating three other PAR2-activated pathways (cAMP, ERK, Rho) in human cells. These findings highlight opportunities to design drugs to block specific PAR2-linked signalling pathways in disease, without blocking beneficial PAR2 signalling in normal physiology, and to dissect PAR2-associated mechanisms of disease in vivo.
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Affiliation(s)
- J Y Suen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Qld, Australia
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Lokich E, Hill E, Han A, Romano N, Horan T, Yano N, Kim K, Singh R, Moore R. Treatment of epithelial ovarian cancer with HE4-targeted antisense phosphorothioligos (PTOs). Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.03.280] [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: 10/25/2022]
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Lokich E, Han A, Romano N, Yano N, Kim K, Singh R, Moore R. HE4 interacts with sex hormones in epithelial ovarian cancer. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.03.290] [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: 10/25/2022]
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Numanoglu C, Corbacioglu Esmer A, Ulker V, Goksedef BPC, Han A, Akbayir O, Guraslan B. The prediction of para-aortic lymph node metastasis in endometrioid adenocarcinoma of endometrium. J OBSTET GYNAECOL 2014; 34:177-81. [DOI: 10.3109/01443615.2013.844112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Noh H, Lee J, Choi E, Han A. Abstract P6-06-25: Usefulness of pretreatment NLR as prognostic factor of late recurrence, 5-year after primary treatment. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p6-06-25] [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: 11/16/2022]
Abstract
Abstract
Background
Prognostic factor and predictive factors are well established in early-stage breast cancer, but less is known about recurrence, especially 5-year after primary treatment. While mortality of breast cancer is from organic dysfunction with metastatic disease, not from the diseased breast itself, still we do not have adequate information about metastatic disease as we do about primary breast cancer itself.
The aim of this study is to investigate of usefulness of pretreatment NLR(neutrophil to lymphocyte ratio) as prognostic factor that can tell risk of recurrence 5- year after primary treatment.
Patients and methods
A retrospective review of invasive breast cancer patients surgically resected between January 2001 and December 2007. Exclusion criteria were as followings: patients with recurrence or death within 5yrs.
Results
A total of 301 patients were included and 13 patients experienced with recurrence after 5 years.
Table 1. Patients' characteristics Total (n = 301) N (%)Age*48.8(±11.4)Age ≤3525(8.3)35< ≤50165(54.8)50<111(36.9)Histology Ductal270(89.7)Lobular7(2.3)Others24(8.0)Tumor size (cm)*2.73(±1.64)T stage T1126(41.9)T2158(52.5)T317(5.6)N stage N0199(66.1)N167(22.3)N220(6.6)N311(3.7)unknown4(1.3)Histologic grade I72(23.9)II110(36.5)III70 (23.3)unknown49(16.3)Estrogen receptor Negative111(36.9)Positive185(61.5)unknown5(1.6)Progesterone receptor Negative129(42.9)Positive167(55.5)Unknown5(1.6)HER-2 Negative196(65.1)Positive98(32.6)unknown7(2.3)Molecular subtype Luminal A136(45.2)Luminal B66(21.9)HER-2 enriched32(10.6)Triple negative60(20.0)unknown7(2.3)Late recur Yes13(4.3)No288(95.7)*mean±SD
Overall average of NLR value was 2.16, median value was 1.83. The average NLR were 2.80±1.68 in patients with recurrences occurred after 5 years and 2.13±1.15 in patients without recurrence. The NLR cutoff value of 1.83 was determined by median value.
In 1.83≤NLR group has a higher incidence of recurrence after 5 years compared with NLR<1.83 group (8yr DFS 99.2% vs. 93.3%, p = 0.021). Especially in luminal A(ER (+) or PR (+), HER-2(-)), 1.83≤NLR group has a higher incidence of recurrence after 5 years compared with NLR<1.83 group (8yr DFS 100% vs. 87.0%, p = 0.015).
Conclusion
We found that pretreatment NLR is associated with late recurrence that occurs after five years. And we suggest that NLR could be used as one of the prognostic factor that can tell about late recurrence, 5-year after primary treatment.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P6-06-25.
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Affiliation(s)
- H Noh
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - J Lee
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - E Choi
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
| | - A Han
- Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Korea
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Thabuis C, Cheng CY, Wang X, Pochat M, Han A, Miller L, Wils D, Guerin-Deremaux L. Effects of maltitol and xylitol chewing-gums on parameters involved in dental caries development. Eur J Paediatr Dent 2013; 14:303-308. [PMID: 24313583] [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: 06/02/2023]
Abstract
AIM The effects on plaque parameters of sugar free chewing-gums (CG) sweetened with either maltitol or xylitol were assessed to better understand the role polyols can play in dental caries prevention. MATERIALS AND METHODS A double-blind, parallel, randomised, controlled study was conducted in China. Subjects (N = 258, age = 13 to 15 years-old) were divided into 4 groups: 2 receiving polyols CG, containing respectively maltitol or xylitol, a group receiving gum base (placebo) and a negative control group not receiving any gum. CG were chewed for 30 days. This corresponds to a 10 g consumption of polyol per day. Plaque parameters (growth, pH, bacteria and insoluble glucans) were evaluated throughout the experimental period. RESULTS All parameters studied were significantly modified with gum base compared to no-gum: plaque pH increased; plaque growth, bacteria (S. mutans, S. sobrinus, A. viscosus and Lactobacillus) and insoluble glucans decreased. Maltitol and xylitol CG led similarly to a higher plaque pH (AUC, p⋜0.05) on short (at baseline after the first CG consumption) and long term (after 4 weeks of daily CG consumption), with or without saliva stimulation compared to both control and placebo groups. They led to a decrease in plaque growth (p=0.02) over the experimental period compared to controls. Moreover, they significantly reduced the concentration of 4 cariogenic bacteria species (p⋜0.05) in dental plaque compared to gum base. CONCLUSION Sugar free CG sweetened with either maltitol or xylitol can similarly reduce plaque acidogenicity compared to gum base through a decrease in oral bacteria presence. The use of a gum base placebo allowed to isolate effects on parameters involved in dental caries development specific to maltitol and xylitol, and to show these effects were similar.
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Han A, Noh H, Lee J. Abstract P6-07-40: Initial Neutrophil-to-Lymphocyte ratio in primary breast cancer patients: a simple and useful biomarker as prognostic factor. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p6-07-40] [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: 11/16/2022]
Abstract
Abstract
Background: Increasing neutrophil/lymphocyte ratios (NLR) on preoperative blood tests have been associated with worse survival of patients with colorectal, gastric, hepatocellular, pancreatic and lung cancer. However the utility of NLR to predict mortality in breast cancer patients has not been studied. The aim of our study was to determine whether the NLR is predictive of disease specific mortality in breast cancer and subtype-adjusted prognostic effect in breast cancer patients.
Methods: We retrospectively identified all the patients with primary breast cancer diagnosed at Yonsei University Wonju Medical School between January 2000 and June 2011 who underwent primary surgery and completed all phase of their treatment. Breast cancer with infiltrating ductal histology was included and divided into 4 subtypes: Luminal A, Luminal B, Her2-enriched, and basal type. Each immunohistochemical characteristics are as followings: Luminal A: ER and/or PgR positive and negative Her2, Luminal B: ER and/or PgR positive with positive HER2, Her2-enriched: negative ER and PR with positive Her2, and triple negative as basal.
Results: Patients with NLR≥2.5 showed significantly lower 5-year, 10-year breast cancer specific survival than patients with NLR<2.5. (5-year survival; 88.6% vs. 96.4%, p = 0.009, 10-year survival; 84.3% vs. 92.2%, p = 0.006). Cox proportional multivariate hazard model for cancer-specific mortality showed that patients with NLR≥2.5 has hazard ratio 4.71 with 95% confidence interval 1.77–12.53. Further analysis was done according to stratified patients' subgroup with intrinsic subtype. In Luminal A subtype, patients with NLR≥2.5 showed higher mortality rate(p = 0.014), while NLR≥2.5 failed to show statistical significance in the other subtype such as Luminal B, Her2 enriched, and triple negative subtype.
Conclusion: Increased preoperative NLR is a significant prognostic factor in breast cancer specific survival and relevant in Luminal A subtype. This study shows that NLR could be a useful prognostic factor for breast cancer specific survival. And this study suggests that different factors could contribute as prognostic factor to each subtype, such as NLR was significant prognostic factor in Luminal A, while we couldn't find increased NLR is significant in other subtypes.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P6-07-40.
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Affiliation(s)
- A Han
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
| | - H Noh
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
| | - J Lee
- Yonsei Univeristy Wonju Medical School, Wonju, Gangwon, Republic of Korea
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Pamarthi V, Stecker M, O'Horo S, Han A, Fan C. Abstract No. 251: Percutaneous thoracic duct ablation for treatment of thoracic duct injuries and chylous effusions: a single center experience. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.303] [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: 10/28/2022] Open
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Vlassova N, Han A, Zenilman J, James G, Lazarus G. New horizons for cutaneous microbiology: the role of biofilms in dermatological disease. Br J Dermatol 2011; 165:751-9. [DOI: 10.1111/j.1365-2133.2011.10458.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- N. Vlassova
- Johns Hopkins School of Medicine, 733 N Broadway, Baltimore, MD 21205, U.S.A
| | - A. Han
- Department of Dermatology, Johns Hopkins Medical Institutions, 2500 Mason F. Lord, 4940 Eastern Avenue, Baltimore, MD 21224‐2780, U.S.A
| | - J.M. Zenilman
- Department of Medicine, Infectious Diseases Division, Johns Hopkins Medical Institutions, Baltimore, MD, U.S.A
| | - G. James
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, U.S.A
| | - G.S. Lazarus
- Department of Dermatology, Johns Hopkins Medical Institutions, 2500 Mason F. Lord, 4940 Eastern Avenue, Baltimore, MD 21224‐2780, U.S.A
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Munshi NC, Lee S, Kambhampati S, Mohiuddin A, Rose MG, Behler C, Han A, Efebera YA, Houranieh A, Brophy MT, Zimelman A, Prabhala RH, Grady T, Klein CE, Mehta P, Hayes TG, Roodman GD, Lichtenstein A. Efficacy and improved toxicity profile of once a week bortezomib (BZ) with dexamethasone (dex) in newly diagnosed multiple myeloma (NDMM) patients (pts) with older age and comorbidities: Preliminary results of an ongoing clinical study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.8074] [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: 11/20/2022] Open
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Hamilton M, Bernardino A, Liu Y, Provoncha K, Paul D, Rotshteyn Y, Han A, Qian D. 65 Targeting Ras-mutated tumors with novel multiplex PI3K inhibitors through inhibition of eIF-4E-mediated protein translation. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71770-5] [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: 10/18/2022] Open
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Hu M, Yu J, Xing L, Han A, Kong L. Diagnostic Ability of Dual-time-point FDG PET/CT for Mediastinal Lymph Node Metastases in Non-small Cell Lung Cancer Patients. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yang Y, Yu J, Xing L, Sun X, Hu M, Mu D, Han A. HIF-1α and EGFR as progonostic factors for therapy response and 1-year locoregional recurrence not for distant metastasis and 2-year OS in unresectable stage IIIA NSCLC treated with combined chemoradiotherapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10640] [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: 11/20/2022] Open
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Wang J, Zhang C, Meng Y, Han A, Gong J, Li K. Abstract: 1069 ELEVATED LEVELS OF OXIDIZED LIPOPROTEIN(A) ARE ASSOCIATED WITH THE PRESENCE AND SEVERITY OF ACUTE CORONARY SYNDROMES. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70410-6] [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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Hur M, Yoon C, Ko S, Lee H, Kim S, Park H, Han A, Kang S. 0213 Clinical characteristics of triple negative breast cancers. Breast 2009. [DOI: 10.1016/s0960-9776(09)70230-9] [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] Open
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Xu X, Yu J, Kong L, Sun X, Yang G, Fu Z, Han A, Zheng J. The Prognostic Value of 18F-FDG Uptake by using Serial PET/CT in Patients with Local Advanced Non-small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1376] [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: 11/15/2022]
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Han A, Chen X, Qiao Y. Effects of the addition of electrolyte on liquid infiltration in a hydrophobic nanoporous silica gel. Langmuir 2008; 24:7044-7047. [PMID: 18564859 DOI: 10.1021/la800446z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this letter, we report the experimental results of pressure induced infiltration in the hydrophobic nanopores of a silica gel. The infiltration pressure increases with the prolonged surface treatment time, whereas the infiltration volume is not dependent on the surface coverage. When temperature increases, if the liquid phase is pure water, the infiltration pressure would decrease, which is in agreement with the classic contact angle measurement results at large solid surfaces. As an electrolyte is added, however, the variation in infiltration pressure is negligible over a broad temperature range.
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Affiliation(s)
- A Han
- Department of Structural Engineering, University of California at San Diego, La Jolla, California 92093-0085, USA
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