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Zheng Z, Wei X, Lin Y, Tao S, Li H, Ji Z, Wei H, Jin J, Zhao F, Lang C, Liu J, Chen J. In vivo therapy of osteosarcoma using anion transporters-based supramolecular drugs. J Nanobiotechnology 2024; 22:29. [PMID: 38216937 PMCID: PMC10787436 DOI: 10.1186/s12951-023-02270-x] [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: 09/27/2023] [Accepted: 12/14/2023] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND Osteosarcoma represents a serious clinical challenge due to its widespread genomic alterations, tendency for drug resistance and distant metastasis. New treatment methods are urgently needed to address those treatment difficulties in osteosarcoma to improve patient prognoses. In recent years, small-molecule based anion transporter have emerged as innovative and promising therapeutic compound with various biomedical applications. However, due to a lack of efficient delivery methods, using ion transporters as therapeutic drugs in vivo remains a major challenge. RESULT Herein, we developed self-assembled supramolecular drugs based on small-molecule anion transporters, which exhibited potent therapeutic effect towards osteosarcoma both in vitro and in vivo. The anion transporters can disrupt intracellular ion homeostasis, inhibit proliferation, migration, epithelial-mesenchymal transition process, and lead to osteosarcoma cell death. RNA sequencing, western blot and flow cytometry indicated reprogramming of HOS cells and induced cell death through multiple pathways. These pathways included activation of endoplasmic reticulum stress, autophagy, apoptosis and cell cycle arrest, which avoided the development of drug resistance in osteosarcoma cells. Functionalized with osteosarcoma targeting peptide, the assembled supramolecular drug showed excellent targeted anticancer therapy against subcutaneous xenograft tumor and lung metastasis models. Besides good tumor targeting capability and anti-drug resistance, the efficacy of the assembly was also attributed to its ability to regulate the tumor immune microenvironment in vivo. CONCLUSIONS In summary, we have demonstrated for the first time that small-molecule anion transporters are capable of killing osteosarcoma cells through multiple pathways. The assemblies, OTP-BP-L, show excellent targeting and therapeutic effect towards osteosarcoma tumors. Furthermore, the supramolecular drug shows a strong ability to regulate the tumor immune microenvironment in vivo. This work not only demonstrated the biomedical value of small-molecule anion transporters in vivo, but also provided an innovative approach for the treatment of osteosarcoma.
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Affiliation(s)
- Zeyu Zheng
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Xiaoan Wei
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Yangyang Lin
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Siyue Tao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Hui Li
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Zhongyin Ji
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Hongxin Wei
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Jiayan Jin
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Fengdong Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Chao Lang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, China.
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, 510640, China.
| | - Junhui Liu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China.
| | - Jian Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China.
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Lin T, Peng S, Lu S, Fu S, Zeng D, Li J, Chen T, Fan T, Lang C, Feng S, Ma J, Zhao C, Antony B, Cicuttini F, Quan X, Zhu Z, Ding C. Prediction of knee pain improvement over two years for knee osteoarthritis using a dynamic nomogram based on MRI-derived radiomics: a proof-of-concept study. Osteoarthritis Cartilage 2023; 31:267-278. [PMID: 36334697 DOI: 10.1016/j.joca.2022.10.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 09/26/2022] [Accepted: 10/19/2022] [Indexed: 11/05/2022]
Abstract
OBJECTIVES To develop and validate a nomogram to detect improved knee pain in osteoarthritis (OA) by integrating magnetic resonance imaging (MRI) radiomics signature of subchondral bone and clinical characteristics. METHODS Participants were selected from the Vitamin D Effects on Osteoarthritis (VIDEO) study. The primary outcome was 20% improvement of knee pain score over 2 years in participants administrated either vitamin D or placebo. Radiomics features of subchondral bone and clinical characteristics from 216 participants were extracted and analyzed. The participants were randomly split into the training and validation cohorts at a ratio of 8:2. Least absolute shrinkage and selection operator (LASSO) regression was used to select features and generate radiomics signatures. The optimal radiomics signature and clinical indicators were fitted into a nomogram using multivariable logistic regression model. RESULTS The nomogram showed favorable discrimination performance [AUCtraining, 0.79 (95% CI: 0.72-0.79), AUCvalidation, 0.83 (95% CI: 0.70-0.96)] as well as a good calibration. Additional contributing value of fusion radiomics signature to the nomogram was statistically significant (NRI, 0.23; IDI, 0.14, P < 0.001 in training cohort and NRI, 0.29; IDI, 0.18, P < 0.05 in validating cohort). Decision curve analysis confirmed the clinical usefulness of nomogram. CONCLUSION The radiomics-based nomogram comprising the MR radiomics signature and clinical variables achieves a favorable predictive efficacy and accuracy in differentiating improvement in knee pain among OA patients. This proof-of-concept study provides a promising way to predict clinically meaningful outcomes.
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Affiliation(s)
- T Lin
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - S Peng
- School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China.
| | - S Lu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - S Fu
- School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China.
| | - D Zeng
- School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China.
| | - J Li
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - T Chen
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - T Fan
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - C Lang
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - S Feng
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, 999077, Hong Kong, China.
| | - J Ma
- School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China.
| | - C Zhao
- Philips China, Beijing, 100000, China.
| | - B Antony
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, 7000, Australia.
| | - F Cicuttini
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, 3800, Australia.
| | - X Quan
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - Z Zhu
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - C Ding
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China; Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, 7000, Australia.
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Schwendenwein A, Boettiger K, Kovacs I, Barany N, Lang C, Megyesfalvi Z, Grusch M, Kowol C, Rezeli M, Hoetzenecker K, Dome B, Schelch K. EP14.02-002 Cisplatin in Combination with Entinostat exerts Synergistic Antineoplastic Activity in Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.962] [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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Lang C, Lantos A, Megyesfalvi Z, Oberndorfer F, Schwendenwein A, Timelthaler G, Ferencz B, Fillinger J, Hoda M, Klikovits T, Querner A, Egger F, Boettiger K, Hoetzenecker K, Renyi-Vamos F, Schelch K, Döme B. EP14.02-003 Clinical Significance of MYC Family Members in Surgically Resected Limited-Stage Small Cell Lung Cancer: A Multicenter Study. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.963] [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: 10/14/2022]
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Boettiger K, Schwendenwein A, Lang C, Megyesfalvi Z, Hoetzenecker K, Rezeli M, Dome B, Schelch K. EP14.02-006 Subtype-specific Hypersensitivity to Oxidative Phosphorylation Inhibition in Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.966] [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: 10/14/2022]
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Lang C, Lloyd EC, Matuszewski KE, Xu Y, Ganesan V, Huang R, Kumar M, Hickey RJ. Nanostructured block copolymer muscles. Nat Nanotechnol 2022; 17:752-758. [PMID: 35654867 DOI: 10.1038/s41565-022-01133-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 04/02/2022] [Indexed: 06/15/2023]
Abstract
High-performance actuating materials are necessary for advances in robotics, prosthetics and smart clothing. Here we report a class of fibre actuators that combine solution-phase block copolymer self-assembly and strain-programmed crystallization. The actuators consist of highly aligned nanoscale structures with alternating crystalline and amorphous domains, resembling the ordered and striated pattern of mammalian skeletal muscle. The reported nanostructured block copolymer muscles excel in several aspects compared with current actuators, including efficiency (75.5%), actuation strain (80%) and mechanical properties (for example, strain-at-break of up to 900% and toughness of up to 121.2 MJ m-3). The fibres exhibit on/off rotary actuation with a peak rotational speed of 450 r.p.m. Furthermore, the reported fibres demonstrate multi-trigger actuation (heat and hydration), offering switchable mechanical properties and various operating modes. The versatility and recyclability of the polymer fibres, combined with the facile fabrication method, opens new avenues for creating multifunctional and recyclable actuators using block copolymers.
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Affiliation(s)
- Chao Lang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, China
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China
| | - Elisabeth C Lloyd
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Kelly E Matuszewski
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Yifan Xu
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Venkat Ganesan
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Rui Huang
- Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX, USA
| | - Manish Kumar
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Robert J Hickey
- Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA.
- Materials Research Institute, The Pennsylvania State University, University Park, PA, USA.
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Jiang X, Pan T, Lang C, Zeng C, Hou J, Xu J, Luo Q, Hou C, Liu J. Single-Molecule Observation of Selenoenzyme Intermediates in a Semisynthetic Seleno-α-Hemolysin Nanoreactor. Anal Chem 2022; 94:8433-8440. [PMID: 35621827 DOI: 10.1021/acs.analchem.2c01204] [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: 11/28/2022]
Abstract
The development of monitoring methods to capture short-lived intermediates is crucial for kinetic mechanism validation of enzymatic reaction steps. In this work, a semisynthetic selenoenzyme nanoreactor was constructed by introducing the unnatural amino acid (Sec) into the lumen of the α-hemolysin (αHL) nanopore. This nanoreactor not only created a highly confined space to trap the enzyme-substrate complex for a highly efficient antioxidant activity but also provided a single channel to characterize a series of selenoenzyme intermediates in the whole catalytic cycle through electrochemical analysis. In particular, the unstable intermediate of SeOH can be clearly detected by the characteristic blocking current. The duration time corresponding to the lifetime of each intermediate that stayed within the nanopore was also determined. This label-free approach showed a high detection sensitivity and temporal-spatial resolution to scrutinize a continuous enzymatic process, which would facilitate uncovering the mysteries of selenoenzyme catalysis at the single-molecule level.
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Affiliation(s)
- Xiaojia Jiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Tiezheng Pan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Chao Lang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Chao Zeng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Jinxing Hou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Jiayun Xu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Quan Luo
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.,Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Chunxi Hou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Junqiu Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.,College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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Zhang TT, Yang XL, Yang SX, Shang J, Xue Q, Zhang X, Zhu YL, Huang YY, Zhang DH, Sun YL, Lang C, Gao XZ, Cai HB, Zhang JQ, Xu Y, Gao Y. [Analysis of clinical features and etiological diagnostic indices of reproductive age women with hyperandrogenism]. Zhonghua Yi Xue Za Zhi 2022; 102:412-417. [PMID: 35144340 DOI: 10.3760/cma.j.cn112137-20210728-01683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical features and the value of different diagnostic indices for etiology in reproductive age women with hyperandrogenism. Methods: The medical records of 96 reproductive age women with hyperandrogenism in the multi-disciplinary team of Peking University First Hospital from January 2020 to April 2021 were collected. The patients were divided into four groups based on final diagnosis: congenital adrenal hyperplasia (CAH) (n=8), polycystic ovary syndrome (PCOS) (n=67), idiopathic hyperandrogenism (n=13) and other specific diseases (n=8), respectively. The indices related to androgens in different groups were compared, and then their efficiency for diagnosis of CAH and PCOS were analyzed with receiver operator characteristic curve (ROC curve). Results: A total of 96 patients with hyperandrogenism were recruited, with the age of 19-45 (29±6) years old. Overall, 4.2% (4/96) of the patients were with single clinical hyperandrogenism, 56.3% (54/96) were with single laboratory hyperandrogenaemia and 39.6% (38/96) were with both. The breakdown into laboratory hyperandrogenaemia subtypes was as follows: only T elevation 22.8% (21/92), only A2 elevation 7.6% (7/92), none DHEAS elevation, only FAI elevation 5.4% (5/92) and elevation of more than one of the androgen indices mentioned above accounted for 64.1% (59/92). In the reasons of consultation, simple irregular menstruation (36.0%, 32/89) or accompanied by clinical hyperandrogenism with or without infertility (36.0%, 32/89) were the most common. As for primary visiting departments, Obstetrics and Gynecology accounted for 53.2% (51/96), and then Endocrinology as 39.5% (38/96). The 17-OHP level of CAH, PCOS and idiopathic hyperandrogenism group was 20.0 (8.2, 33.1), 1.1 (0.8, 1.4), 0.9 (0.8, 1.3) ng/ml, respectively. The androstenedione level in these groups was 6.3 (4.6, 8.7), 3.8 (2.9, 4.8) and 3.2 (2.7, 3.7) ng/ml, respectively. The 17-OHP and androstenedione levels of CAH group were significantly higher than that in PCOS or idiopathic hyperandrogenism group (all P<0.05). The ratio of LH and FSH in these three groups was 0.8(0.5, 1.0), 1.3(0.6, 1.9) and 0.6(0.3, 0.7), respectively. The ratio of LH and FSH was significantly higher in PCOS than that in idiopathic hyperandrogenism group (P=0.024), but yet there was no significant difference compared with CAH group (P>0.05). The AUC of ROC curve of 17-OHP for CAH diagnosis was 0.94, followed by androstenedione 0.83, whereas LH/FSH for PCOS diagnosis was only 0.63. Conclusions: Among the reasons of consultation in reproductive age women who visited our multi-disciplinary team for female hyperandrogenism, simple irregular menstruation or accompanied by clinical hyperandrogenism with or without infertility are the most common. PCOS accounts for the majority of different androgen excess disorders. 17-OHP is the most valuable parameter for the diagnosis of CAH and secondly androstenedione.
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Affiliation(s)
- T T Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - X L Yang
- Reproductive Genetics Center of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - S X Yang
- Department of Dermatology, Peking University First Hospital, Beijing 100034, China
| | - J Shang
- Reproductive Genetics Center of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - Q Xue
- Reproductive Genetics Center of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - X Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y L Zhu
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - Y Y Huang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - D H Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - Y L Sun
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - C Lang
- LIANREN Digital Health, Shanghai 201210, China
| | - X Z Gao
- LIANREN Digital Health, Shanghai 201210, China
| | - H B Cai
- LIANREN Digital Health, Shanghai 201210, China
| | - J Q Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - Y Xu
- Reproductive Genetics Center of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - Ying Gao
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
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Reiprich A, Skalden L, Raab A, Bolotina N, Lang C. Lactobacillus crispatus DSM25988 as novel bioactive agent to co-aggregate Streptococcus pyogenes and to exclude it by binding to human cells. Benef Microbes 2022; 13:83-94. [PMID: 35144524 DOI: 10.3920/bm2021.0103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Streptococcus pyogenes, a group A streptococcus, is the major bacterial pathogen responsible for acute bacterial infection of the human oropharynx and the causative agent of scarlet fever. Estimates of the global burden of S. pyogenes related diseases revealed 616 million cases of pharyngitis, and at least 517,000 deaths due to severe invasive diseases and sequelae. Here we describe Lactobacillus crispatus DSM25988 that was identified among hundreds of Lactobacillus strains (referring to all organisms that were classified as Lactobacillaceae until 2020) showing ability to prevent adhesion of S. pyogenes to Detroit 562 cells, and to exhibit a masking and co-aggregating effect on S. pyogenes in vitro. L. crispatus DSM25988 also inhibits invasion of cultured human epithelial pharyngeal cells by S. pyogenes. Competitive binding to fibronectin might be involved in the inhibition process. Antiviral activity of the L. crispatus DSM25988 cells were identified in an in vitro cell model demonstrating that L. crispatus effectively excludes viruses from epithelial cells using SARS-CoV2 proteins as a model. This finding points to the potential of DSM25988 to protect cells from virus infection. Biological activity is retained in heat treated cells. The heat-treated Lactobacillus strain was further developed into functional throat lozenges, wherein its biological activity is stably maintained in the formulation. Lozenges containing L. crispatus DSM25988 underwent testing in an uncontrolled, prospective user study in 44 subjects with symptoms of sore throat for a period of up to 14 days. The study data shows promising safety and efficacy of the medical device when used against symptoms of sore throat like scratchy feeling, hoarse voice and swallowing pain.
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Affiliation(s)
- A Reiprich
- Belano medical AG, Neuendorfstraße 19, 16761 Hennigsdorf, Germany
| | - L Skalden
- Belano medical AG, Neuendorfstraße 19, 16761 Hennigsdorf, Germany
| | - A Raab
- Belano medical AG, Neuendorfstraße 19, 16761 Hennigsdorf, Germany
| | - N Bolotina
- Belano medical AG, Neuendorfstraße 19, 16761 Hennigsdorf, Germany
| | - C Lang
- Belano medical AG, Neuendorfstraße 19, 16761 Hennigsdorf, Germany
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Lang C, Kumar M, Hickey RJ. Current status and future directions of self-assembled block copolymer membranes for molecular separations. Soft Matter 2021; 17:10405-10415. [PMID: 34768280 DOI: 10.1039/d1sm01368h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
One of the most efficient and promising separation alternatives to thermal methods such as distillation is the use of polymeric membranes that separate mixtures based on molecular size or chemical affinity. Self-assembled block copolymer membranes have gained considerable attention within the membrane field due to precise control over nanoscale structure, pore size, and chemical versatility. Despite the rapid progress and excitement, a significant hurdle in using block copolymer membranes for nanometer and sub-nanometer separations such as nanofiltration and reverse osmosis is the lower limit on domain size features. Strategies such as polymer post-functionalization, self-assembly of oligomers, liquid crystals, and random copolymers, or incorporation of artificial/natural channels within block copolymer materials are future directions with the potential to overcome current limitations with respect to separation size.
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Affiliation(s)
- Chao Lang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania, 16801, USA.
| | - Manish Kumar
- Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, Austin, TX, 78712, USA.
| | - Robert J Hickey
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania, 16801, USA.
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania, 16801, USA
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Lang C, Yu P. PSXVI-26 Using synchrotron/globar techniques to reveal synergistic and interactive association between molecular structures and nutrient supply in enzymatic and thermal treated oat tissue and whole grain. J Anim Sci 2021. [DOI: 10.1093/jas/skab235.846] [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: 11/13/2022] Open
Abstract
Abstract
As an advanced technique, synchrotron radiation-based microspectroscopy SR-FTIRM has been a rapid, direct, non-destructive and non-invasive bioanalytical method. Globar molecular spectroscopic technique -attenuated total reflectance-ATR-FTIR spectroscopy will be used. For this research, feed type CDC Nasser, forage type CDC haymaker, and milling types CDC Arborg and Summit with three consecutive years are studied. There are three treatments for oat samples: Treatment 1, steam pressure processing alone; Treatment 2, adding innovative fibrolytic enzyme; Treatment 3, steam pressure processing plus fibrolytic enzyme. Each treatment combination has three replications. The objectives of this research are to detect the molecular structure spectral features of processed oat endosperm tissues at a molecular and cellular level in relation to chemical profiles, protein and carbohydrate fractions, energy profiles, degradation kinetics, intestinal digestibility, microbial protein production and true nutrient supply of whole oat grains. This research reveals the interactive association between induced molecular structure changes and nutrient properties and true nutrient supply. This research is also to increase economic returns to oat producers and related dairy industries through efficient utilization of feed-type or milling type of oat grains.
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Affiliation(s)
- C Lang
- Department of Animal and Poultry Science, University of Saskatchewan
| | - P Yu
- Department of Animal and Poultry Science, University of Saskatchewan
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Li Q, Liu F, Tang Y, Lee S, Lang C, Bai L, Xia Y. The Distribution of Cardiovascular-Related Comorbidities in Different Adult-Onset Cancers and Related Risk Factors: Analysis of 10 Year Retrospective Data. Front Cardiovasc Med 2021; 8:695454. [PMID: 34595215 PMCID: PMC8476781 DOI: 10.3389/fcvm.2021.695454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/19/2021] [Indexed: 12/25/2022] Open
Abstract
Introduction: Understanding the epidemiology of cardiovascular disease (CVD) related comorbidity is a key strategy for improving the outcomes of patients with cancer. Therefore, this study aimed to assess the distribution of cardiovascular comorbidities and cardiovascular risk factors (CVRF) among five cancer sites. Methods: This is a single-centered, cross-sectional study performed in Dalian, China. Between 2008 and 2018, all newly diagnosed cancer in the First Affiliated Hospital of Dalian Medical University, China were screened. Clinical data were extracted from a comprehensive electronic health record system. Results: 35861 patients with lung, colorectal, gastric, breast, and thyroid cancer were collected retrospectively. The most prevalent CVDs in descending order were hypertension (21.9%), followed by coronary heart disease (6.5%), atrial fibrillation (2.9%), and heart failure (1%). The prevalence of hypertension significantly varies between lung (21.3%), colorectal (27.3%), gastric (22.5%), breast (16.7%), and thyroid cancer (22.4%) (P < 0.001). CVRF varies with cancer sites. Age, sex, total cholesterol, triglyceride, low-density lipoprotein cholesterol, systolic blood pressure, smoking, alcohol use, and diabetes mellitus (DM) are common risk factors associated with CVD at different cancer sites. The association between DM and presence of CVD was strong in breast (odds ratio [OR] = 4.472, 95% confidence interval [CI]: 3.075-6.504, P < 0.001), lung (OR = 3.943; 95% CI: 3.270-4.754, P < 0.001), colorectal (OR = 3.049; 95% CI: 2.326-3.996, P < 0.001), and gastric (OR = 2.508; 95% CI: 1.927-3.264, P < 0.001) cancer. Conclusion: Cancer patients had a significant burden of CVD and increased CVRF. The prevalence of CVRF and CVD comorbidity differ for cancer types. DM remains significantly associated with CVD at different cancer sites except for thyroid cancer.
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Affiliation(s)
- Qingsong Li
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Fei Liu
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yuqi Tang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Sharen Lee
- Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR China
| | - Chao Lang
- Yidu Cloud Technology, Ltd., Beijing, China
| | - Lan Bai
- Yidu Cloud Technology, Ltd., Beijing, China
| | - Yunlong Xia
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
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13
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Ji F, Lang C, Gao P, Sun H. Knockdown of Circ_0000144 Suppresses Cell Proliferation, Migration and Invasion in Gastric Cancer Via Sponging MiR-217. J Microbiol Biotechnol 2021; 31:784-793. [PMID: 33958507 PMCID: PMC9705855 DOI: 10.4014/jmb.2102.02005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 12/15/2022]
Abstract
Previous studies have uncovered the role of circ_0000144 in various tumors. Here, we investigated the function and mechanism of circ_0000144 in gastric cancer (GC) progression. The expression of circ_0000144 in GC tissues and cells was detected through quantitative real-time polymerase chain reaction (qRT-PCR) method. Gain- and loss-of-function experiments including colony formation, wound healing and transwell assays were performed to examine the role of circ_0000144 in GC cells. Furthermore, western blot was conducted to determine the expressions of epithelial mesenchymal transition (EMT)-related proteins. The interaction between circ_0000144 and miR-217 was analyzed by bioinformatic analysis and luciferase reporter assays. The circ_0000144 expression was obviously upregulated in GC tissues and cells. Silencing of circ_0000144 inhibited cell proliferation, migration and invasion of GC cells, but ectopic expression of circ_0000144 showed the opposite results. Moreover, circ_0000144 sponged miR-217, and rescue assays revealed that silencing miR-217 expression reversed the inhibitory effect of circ_0000144 knockdown on the progress of GC. Our findings reveal that circ_0000144 inhibition suppresses GC cell proliferation, migration and invasion via absorbing miR-217, providing a new biomarker and potential therapeutic target for treatment of GC.
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Affiliation(s)
- Fengcun Ji
- Department of General Surgery, Sunshine Union Hospital, High-Tech District, Weifang 261000, P.R. China
| | - Chao Lang
- Department of General Surgery, Sunshine Union Hospital, High-Tech District, Weifang 261000, P.R. China
| | - Pengfei Gao
- Department of General Surgery, Sunshine Union Hospital, High-Tech District, Weifang 261000, P.R. China
| | - Huanle Sun
- Department of General Surgery, Sunshine Union Hospital, High-Tech District, Weifang 261000, P.R. China,Corresponding author E-mail:
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14
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Lang C, Renert-Yuval Y, Del Duca E, Pavel A, Wu J, Zhang N, Dubin C, Obi A, Chowdhury M, Kim M, Estrada Y, Krueger J, Kaderbhai H, Semango G, Schmid-Grendelmeier P, Brüggen M, Masenga J, Guttman-Yassky E. 412 Immune and barrier characterization of atopic dermatitis skin phenotype in Tanzanian patients. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.435] [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: 11/26/2022]
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15
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König L, Haering P, Lang C, Von Nettelbladt B, Weykamp F, Hoegen P, Susko M, Herfarth K, Debus J, Hörner-Rieber J. PO-1429: Risk for radiation-induced cancer following proton vs.photon radiotherapy of mediastinal lymphoma. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01447-x] [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: 11/30/2022]
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16
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Haering P, Splinter M, Lang C. PO-1336: Should we include machine uncertainties in radiotherapy planning? Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01355-4] [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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17
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Marot M, Elter A, Mann P, Schwahofer A, Lang C, Johnen W, Körber S, Beuthien-Baumann B, Gillmann C. PO-1408: End-to-end empirical validation of 3D dose distributions using an anthropomorphic pelvis phantom. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01426-2] [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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18
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Hoegen P, Lang C, Akbaba S, Häring P, Splinter M, Miltner A, Bachmann M, Stahl-Arnsberger C, Brechter T, Bernhardt D, Klüter S, Syed M, Weykamp F, König L, Debus J, Hörner-Rieber J. PO-1652: In silico trial of cone-beam-CT guided adaptive planning for radiotherapy of locally advanced NSCLC. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01670-4] [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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19
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Murillo C, Seeber S, Haering P, Lang C, Splinter M. PO-1600: Evaluation of a High Dynamic Multileaf Collimator for Real-Time tumor tracking. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01618-2] [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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20
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Splinter M, Sachpazidis I, Bostel T, Häring P, Lang C, Grosu A, Debus J, Baltas D, Nicolay N. PO-1172: dose effects due to interfractional variability for hypofractionated radiotherapy of prostate cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01190-7] [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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21
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Brown A, Gandy S, McCrimmon R, Struthers A, Lang C. Dapagliflozin improves left ventricular myocardial longitudinal function in people with type 2 diabetes. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0912] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Asymptomatic left ventricular (LV) dysfunction is highly prevalent in patients with type 2 diabetes mellitus (T2DM). Sodium-glucose cotransporter 2 (SGLT2) inhibitors have been shown to reduce all-cause mortality and hospitalisations for heart failure in patients with T2DM. The underlying mechanisms for these cardiovascular benefits are unclear. In the Dapa-LVH trial, we had previously shown that dapagliflozin treatment significantly reduces LV mass (LVM) compared to placebo in patients with T2DM and LV hypertrophy (LVH).
Purpose
The objective of this sub-study of the Dapa-LVH study was to assess whether dapagliflozin treatment improves LV myocardial longitudinal function and LV diastolic function in patients with T2DM and LVH.
Methods
We randomly assigned 66 people (mean age 67±7 years, 38 males) with T2D, LVH with a normal LV ejection fraction to receive dapagliflozin 10mg once-daily or placebo for 12 months. The primary endpoints were change in global longitudinal strain (GLS) and LV diastolic function defined as the ratio of mitral inflow E to mitral e' annual velocities assessed using echocardiography. Secondary endpoints were left ventricular and atrial volumes assessed using cardiac magnetic resonance.
Results
Dapagliflozin treatment resulted in a median increase in GLS of −1.64±2.5% vs placebo −0.2±1.8; p=0.024, with a mean difference of −1.4% (95% CI: −2.7 to −0.2). There was a trend towards a reduction left atrial area with a median change in left atrial area of the dapagliflozin group −0.5±3.75 cm2 vs placebo group 0.0±3.5 cm2; p=0.088), leading to an absolute mean difference of −1.29cm2 (95% CI: −3.01 to 0.44). There was no significant difference between dapagliflozin and placebo in E/e' and in LV volumes.
Conclusion
Dapagliflozin treatment improved LV myocardial longitudinal function which may suggests it may improve subclinical LV dysfunction.
Funding Acknowledgement
Type of funding source: Private grant(s) and/or Sponsorship. Main funding source(s): This study was funded by an Externally Sponsored Research grant from Astra Zeneca – (grant number ESR-14-10168
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Affiliation(s)
| | - S Gandy
- Ninewells Hospital, Dundee, United Kingdom
| | | | | | - C Lang
- Ninewells Hospital, Dundee, United Kingdom
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22
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Mann P, Witte M, Mercea P, Nill S, Lang C, Karger CP. Feasibility of markerless fluoroscopic real-time tumor detection for adaptive radiotherapy: development and end-to-end testing. Phys Med Biol 2020; 65:115002. [PMID: 32235075 DOI: 10.1088/1361-6560/ab8578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Respiratory-gated radiotherapy treatments of lung tumors reduce the irradiated normal tissue volume and potentially lower the risk of side effects. However, in clinical routine, the gating signal is usually derived from external markers or other surrogate signals and may not always correlate well with the actual tumor position. This study uses the kV-imaging system of a LINAC in combination with a multiple template matching algorithm for markerless real-time detection of the tumor position in a dynamic anthropomorphic porcine lung phantom. The tumor was realized by a small container filled with polymer dosimetry gel, the so-called gel tumor. A full end-to-end test for a gated treatment was performed and the geometric and dosimetric accuracy was validated. The accuracy of the tumor detection algorithm in SI- direction was found to be [Formula: see text] mm and the gel tumor was automatically detected in 98 out of 100 images. The measured 3D dose distribution showed a uniform coverage of the gel tumor and comparison with the treatment plan revealed a high 3D [Formula: see text]-passing rate of [Formula: see text] ([Formula: see text]). The simulated treatment confirmed the employed margin sizes for residual motion within the gating window and serves as an end-to-end test for a gated treatment based on a markerless fluoroscopic real-time tumor detection.
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Affiliation(s)
- P Mann
- Department of Medical Physics in Radiation Therapy, German Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg, Germany. National Center for Radiation Research in Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 280, Heidelberg, Germany
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23
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Tu YM, Song W, Ren T, Shen YX, Chowdhury R, Rajapaksha P, Culp TE, Samineni L, Lang C, Thokkadam A, Carson D, Dai Y, Mukthar A, Zhang M, Parshin A, Sloand JN, Medina SH, Grzelakowski M, Bhattacharya D, Phillip WA, Gomez ED, Hickey RJ, Wei Y, Kumar M. Rapid fabrication of precise high-throughput filters from membrane protein nanosheets. Nat Mater 2020; 19:347-354. [PMID: 31988513 DOI: 10.1038/s41563-019-0577-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 12/02/2019] [Indexed: 05/22/2023]
Abstract
Biological membranes are ideal for separations as they provide high permeability while maintaining high solute selectivity due to the presence of specialized membrane protein (MP) channels. However, successful integration of MPs into manufactured membranes has remained a significant challenge. Here, we demonstrate a two-hour organic solvent method to develop 2D crystals and nanosheets of highly packed pore-forming MPs in block copolymers (BCPs). We then integrate these hybrid materials into scalable MP-BCP biomimetic membranes. These MP-BCP nanosheet membranes maintain the molecular selectivity of the three types of β-barrel MP channels used, with pore sizes of 0.8 nm, 1.3 nm, and 1.5 nm. These biomimetic membranes demonstrate water permeability that is 20-1,000 times greater than that of commercial membranes and 1.5-45 times greater than that of the latest research membranes with comparable molecular exclusion ratings. This approach could provide high performance alternatives in the challenging sub-nanometre to few-nanometre size range.
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Affiliation(s)
- Yu-Ming Tu
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Woochul Song
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Tingwei Ren
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Yue-Xiao Shen
- Department of Civil, Environmental, & Construction Engineering, Texas Tech University, Lubbock, TX, USA
| | - Ratul Chowdhury
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | | | - Tyler E Culp
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Laxmicharan Samineni
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Chao Lang
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Alina Thokkadam
- Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ, USA
| | - Drew Carson
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Yuxuan Dai
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Arwa Mukthar
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA, USA
| | - Miaoci Zhang
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | | | - Janna N Sloand
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Scott H Medina
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA
| | | | - Dibakar Bhattacharya
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA
| | - William A Phillip
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, USA
| | - Enrique D Gomez
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA
| | - Robert J Hickey
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
- Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | - Yinai Wei
- Department of Chemistry, University of Kentucky, Lexington, KY, USA
| | - Manish Kumar
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA.
- Materials Research Institute, Pennsylvania State University, University Park, PA, USA.
- Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA, USA.
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX, USA.
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24
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Song W, Joshi H, Chowdhury R, Najem JS, Shen YX, Lang C, Henderson CB, Tu YM, Farell M, Pitz ME, Maranas CD, Cremer PS, Hickey RJ, Sarles SA, Hou JL, Aksimentiev A, Kumar M. Author Correction: Artificial water channels enable fast and selective water permeation through water-wire networks. Nat Nanotechnol 2020; 15:162. [PMID: 31980744 DOI: 10.1038/s41565-020-0640-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Himanshu Joshi
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Ratul Chowdhury
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Joseph S Najem
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
- Department of Mechanical Engineering, The Pennsylvania State University, UniversityPark, PA, USA
| | - Yue-Xiao Shen
- Department of Civil, Environmental, & Construction Engineering, Texas Tech University, Lubbock, TX, USA
| | - Chao Lang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Codey B Henderson
- Department of Chemistry, The Pennsylvania State University, University Park, PA, USA
| | - Yu-Ming Tu
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Megan Farell
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Megan E Pitz
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
| | - Costas D Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Paul S Cremer
- Department of Chemistry, The Pennsylvania State University, University Park, PA, USA
| | - Robert J Hickey
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Stephen A Sarles
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, Shanghai, China
| | - Aleksei Aksimentiev
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX, USA.
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25
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Lang C, Kumar M, Hickey RJ. Influence of block sequence on the colloidal self-assembly of poly(norbornene)-block-poly(ethylene oxide) amphiphilic block polymers using rapid injection processing. Polym Chem 2020. [DOI: 10.1039/c9py00954j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A facile self-assembly method, rapid injection, was used to study the self-assembly difference between AB diblock and ABA triblock copolymers.
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Affiliation(s)
- Chao Lang
- Department of Materials Science & Engineering
- The Pennsylvania State University
- University Park
- 16802 USA
- Department of Chemical Engineering
| | - Manish Kumar
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- 16802 USA
- Materials Research Institute
| | - Robert J. Hickey
- Department of Materials Science & Engineering
- The Pennsylvania State University
- University Park
- 16802 USA
- Materials Research Institute
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26
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Song W, Joshi H, Chowdhury R, Najem JS, Shen YX, Lang C, Henderson CB, Tu YM, Farell M, Pitz ME, Maranas CD, Cremer PS, Hickey RJ, Sarles SA, Hou JL, Aksimentiev A, Kumar M. Artificial water channels enable fast and selective water permeation through water-wire networks. Nat Nanotechnol 2020; 15:73-79. [PMID: 31844288 PMCID: PMC7008941 DOI: 10.1038/s41565-019-0586-8] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 11/04/2019] [Indexed: 05/09/2023]
Abstract
Artificial water channels are synthetic molecules that aim to mimic the structural and functional features of biological water channels (aquaporins). Here we report on a cluster-forming organic nanoarchitecture, peptide-appended hybrid[4]arene (PAH[4]), as a new class of artificial water channels. Fluorescence experiments and simulations demonstrated that PAH[4]s can form, through lateral diffusion, clusters in lipid membranes that provide synergistic membrane-spanning paths for a rapid and selective water permeation through water-wire networks. Quantitative transport studies revealed that PAH[4]s can transport >109 water molecules per second per molecule, which is comparable to aquaporin water channels. The performance of these channels exceeds the upper bound limit of current desalination membranes by a factor of ~104, as illustrated by the water/NaCl permeability-selectivity trade-off curve. PAH[4]'s unique properties of a high water/solute permselectivity via cooperative water-wire formation could usher in an alternative design paradigm for permeable membrane materials in separations, energy production and barrier applications.
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Affiliation(s)
- Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Himanshu Joshi
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Ratul Chowdhury
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Joseph S Najem
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
- Department of Mechanical Engineering, The Pennsylvania State University, UniversityPark, PA, USA
| | - Yue-Xiao Shen
- Department of Civil, Environmental, & Construction Engineering, Texas Tech University, Lubbock, TX, USA
| | - Chao Lang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Codey B Henderson
- Department of Chemistry, The Pennsylvania State University, University Park, PA, USA
| | - Yu-Ming Tu
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Megan Farell
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Megan E Pitz
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
| | - Costas D Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Paul S Cremer
- Department of Chemistry, The Pennsylvania State University, University Park, PA, USA
| | - Robert J Hickey
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Stephen A Sarles
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, Shanghai, China
| | - Aleksei Aksimentiev
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, USA.
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX, USA.
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Gill P, Koshman S, Lang C, Pearson G, Van Damme A, Gyenes G. INTER PROFESSIONAL TEAM-BASED SYSTEMATIC EVALUATION AND MANAGEMENT OF LIPIDS IN CARDIAC REHABILITATION PATIENTS WITH CORONARY ARTERY DISEASE. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.502] [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] Open
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Cacciottolo TM, Perikari A, van der Klaauw A, Henning E, Stadler LKJ, Keogh J, Farooqi IS, Tenin G, Keavney B, Ryan E, Budd R, Bewley M, Coelho P, Rumsey W, Sanchez Y, McCafferty J, Dockrell D, Walmsley S, Whyte M, Liu Y, Choy MK, Tenin G, Abraham S, Black G, Keavney B, Ford T, Stanley B, Good R, Rocchiccioli P, McEntegart M, Watkins S, Eteiba H, Shaukat A, Lindsay M, Robertson K, Hood S, McGeoch R, McDade R, Sidik N, McCartney P, Corcoran D, Collison D, Rush C, McConnachie A, Touyz R, Oldroyd K, Berry C, Gazdagh G, Diver L, Marshall J, McGowan R, Ahmed F, Tobias E, Curtis E, Parsons C, Maslin K, D'Angelo S, Moon R, Crozier S, Gossiel F, Bishop N, Kennedy S, Papageorghiou A, Fraser R, Gandhi S, Prentice A, Inskip H, Godfrey K, Schoenmakers I, Javaid MK, Eastell R, Cooper C, Harvey N, Watt ER, Howden A, Mirchandani A, Coelho P, Hukelmann JL, Sadiku P, Plant TM, Cantrell DA, Whyte MKB, Walmsley SR, Mordi I, Forteath C, Wong A, Mohan M, Palmer C, Doney A, Rena G, Lang C, Gray EH, Azarian S, Riva A, Edwards H, McPhail MJW, Williams R, Chokshi S, Patel VC, Edwards LA, Page D, Miossec M, Williams S, Monaghan R, Fotiou E, Santibanez-Koref M, Keavney B, Badat M, Mettananda S, Hua P, Schwessinger R, Hughes J, Higgs D, Davies J. Scientific Business Abstracts of the 113th Annual Meeting of the Association of Physicians of Great Britain and Ireland. QJM 2019; 112:724-729. [PMID: 31505685 DOI: 10.1093/qjmed/hcz175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - A Perikari
- University of Cambridge Metabolic Research Laboratories
| | | | - E Henning
- University of Cambridge Metabolic Research Laboratories
| | - L K J Stadler
- University of Cambridge Metabolic Research Laboratories
| | - J Keogh
- University of Cambridge Metabolic Research Laboratories
| | - I S Farooqi
- University of Cambridge Metabolic Research Laboratories
| | - G Tenin
- From University of Manchester
| | | | - E Ryan
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - R Budd
- Department of Infection Immunity and Cardiovascular Disease, The Florey Institute for Host-Pathogen Interactions, University of Sheffield
| | - M Bewley
- Department of Infection Immunity and Cardiovascular Disease, The Florey Institute for Host-Pathogen Interactions, University of Sheffield
| | - P Coelho
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - W Rumsey
- Stress and Repair Discovery Performance Unit, Respiratory Therapy Area
| | - Y Sanchez
- Stress and Repair Discovery Performance Unit, Respiratory Therapy Area
| | - J McCafferty
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - D Dockrell
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - S Walmsley
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - M Whyte
- Department of Respiratory Medicine, Centre for Inflammation Research, University of Edinburgh
| | - Y Liu
- From the University of Manchester
| | - M-K Choy
- From the University of Manchester
| | - G Tenin
- From the University of Manchester
| | | | - G Black
- From the University of Manchester
| | | | - T Ford
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | | | - R Good
- Golden Jubilee National Hospital
| | - P Rocchiccioli
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - M McEntegart
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | | | - H Eteiba
- Golden Jubilee National Hospital
| | | | | | | | - S Hood
- Golden Jubilee National Hospital
| | | | - R McDade
- Golden Jubilee National Hospital
| | - N Sidik
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - P McCartney
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - D Corcoran
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - D Collison
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - C Rush
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | | | - R Touyz
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
| | - K Oldroyd
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - Colin Berry
- BHF Centre of Excellence in Vascular Science and Medicine, University of Glasgow
- Golden Jubilee National Hospital
| | - G Gazdagh
- School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - L Diver
- West of Scotland Regional Genetics Service, Laboratory Medicine Building, Queen Elizabeth University Hospital
| | - J Marshall
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - R McGowan
- West of Scotland Regional Genetics Service, Laboratory Medicine Building, Queen Elizabeth University Hospital
| | - F Ahmed
- Developmental Endocrinology Research Group, Royal Hospital for Children, University of Glasgow
| | - E Tobias
- Academic Unit of Medical Genetics and Clinical Pathology, Laboratory Medicine Building, Queen Elizabeth University Hospital, University of Glasgow
| | - E Curtis
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - C Parsons
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - K Maslin
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - S D'Angelo
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - R Moon
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - S Crozier
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - F Gossiel
- Academic Unit of Bone Metabolism, University of Sheffield
| | - N Bishop
- Academic Unit of Child Health, University of Sheffield
| | - S Kennedy
- Nuffield Department of Women's & Reproductive Health, John Radcliffe Hospital, University of Oxford
| | - A Papageorghiou
- Nuffield Department of Women's & Reproductive Health, John Radcliffe Hospital, University of Oxford
| | - R Fraser
- Department of Obstetrics and Gynaecology, Sheffield Hospitals NHS Trust, University of Sheffield
| | - S Gandhi
- Department of Obstetrics and Gynaecology, Sheffield Hospitals NHS Trust, University of Sheffield
| | | | - H Inskip
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - K Godfrey
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - I Schoenmakers
- Department of Medicine, Faculty of Medicine and Health Sciences, University of East Anglia
| | - M K Javaid
- NIHR Oxford Biomedical Research Centre, University of Oxford
| | - R Eastell
- Academic Unit of Bone Metabolism, University of Sheffield
| | - C Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | - N Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton
| | | | - A Howden
- School of Life Sciences, University of Dundee
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - E H Gray
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - S Azarian
- Institute of Hepatology, Foundation for Liver Research
| | - A Riva
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - H Edwards
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - M J W McPhail
- School of Immunology and Microbial Sciences, King's College London
- Institute of Liver Studies & Transplantation, King's College Hospital
| | - R Williams
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - S Chokshi
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - V C Patel
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
- Institute of Liver Studies & Transplantation, King's College Hospital
| | - L A Edwards
- Institute of Hepatology, Foundation for Liver Research
- School of Immunology and Microbial Sciences, King's College London
| | - D Page
- University of Manchester
- Manchester Metropolitan University
| | - M Miossec
- Manchester Metropolitan University
- University of Newcastle
| | | | | | | | | | | | - M Badat
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
| | - S Mettananda
- Department of Paediatrics, Faculty of Medicine, University of Kelaniya
| | - P Hua
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
| | - R Schwessinger
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
| | - J Hughes
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
| | - D Higgs
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
| | - J Davies
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital
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Lang C, LaNasa JA, Utomo N, Xu Y, Nelson MJ, Song W, Hickner MA, Colby RH, Kumar M, Hickey RJ. Solvent-non-solvent rapid-injection for preparing nanostructured materials from micelles to hydrogels. Nat Commun 2019; 10:3855. [PMID: 31451686 PMCID: PMC6710291 DOI: 10.1038/s41467-019-11804-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 08/01/2019] [Indexed: 11/09/2022] Open
Abstract
Due to their distinctive molecular architecture, ABA triblock copolymers will undergo specific self-assembly processes into various nanostructures upon introduction into a B-block selective solvent. Although much of the focus in ABA triblock copolymer self-assembly has been on equilibrium nanostructures, little attention has been paid to the guiding principles of nanostructure formation during non-equilibrium processing conditions. Here we report a universal and quantitative method for fabricating and controlling ABA triblock copolymer hierarchical structures using solvent-non-solvent rapid-injection processing. Plasmonic nanocomposite hydrogels containing gold nanoparticles and hierarchically-ordered hydrogels exhibiting structural color can be assembled within one minute using this rapid-injection technique. Surprisingly, the rapid-injection hydrogels display superior mechanical properties compared with those of conventional ABA hydrogels. This work will allow for translation into technologically relevant areas such as drug delivery, tissue engineering, regenerative medicine, and soft robotics, in which structure and mechanical property precision are essential.
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Affiliation(s)
- Chao Lang
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Jacob A LaNasa
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Nyalaliska Utomo
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yifan Xu
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Melissa J Nelson
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Michael A Hickner
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Ralph H Colby
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA.
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Robert J Hickey
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA.
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30
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Lang C, Shen YX, LaNasa JA, Ye D, Song W, Zimudzi TJ, Hickner MA, Gomez ED, Gomez EW, Kumar M, Hickey RJ. Creating cross-linked lamellar block copolymer supporting layers for biomimetic membranes. Faraday Discuss 2019; 209:179-191. [PMID: 29972389 DOI: 10.1039/c8fd00044a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The long-standing goal in membrane development is creating materials with superior transport properties, including both high flux and high selectivity. These properties are common in biological membranes, and thus mimicking nature is a promising strategy towards improved membrane design. In previous studies, we have shown that artificial water channels can have excellent water transport abilities that are comparable to biological water channel proteins, aquaporins. In this study, we propose a strategy for incorporation of artificial channels that mimic biological channels into stable polymeric membranes. Specifically, we synthesized an amphiphilic triblock copolymer, poly(isoprene)-block-poly(ethylene oxide)-block-poly(isoprene), which is a high molecular weight synthetic analog of naturally occurring lipids in terms of its self-assembled structure. This polymer was used to build stacked membranes composed of self-assembled lamellae. The resulting membranes resemble layers of natural lipid bilayers in living systems, but with superior mechanical properties suitable for real-world applications. The procedures used to synthesize the triblock copolymer resulted in membranes with increased stability due to the crosslinkability of the hydrophobic domains. Furthermore, the introduction of bridging hydrophilic domains leads to the preservation of the stacked membrane structure when the membrane is in contact with water, something that is challenging for diblock lamellae that tend to swell, and delaminate in aqueous solutions. This new method of membrane fabrication offers a practical model for making channel-based biomimetic membranes, which may lead to technological applications in reverse osmosis, nanofiltration, and ultrafiltration membranes.
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Affiliation(s)
- Chao Lang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802 USA.
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31
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Kuula L, Gradisar M, Martinmäki K, Richardson C, Bonnar D, Bartel K, Lang C, Leinonen L, Pesonen AK. Using big data to explore worldwide trends in objective sleep in the transition to adulthood. Sleep Med 2019; 62:69-76. [PMID: 31563008 DOI: 10.1016/j.sleep.2019.07.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/05/2019] [Accepted: 07/10/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Development induces changes in sleep, and its duration has been reported to change as a function of aging. Additionally, sleep timing is a marker of pubertal maturation, where during adolescence, the circadian rhythm shifts later. Typically, this is manifested in a later sleep onset in the evening and later awakening in the morning. These changes across development seem to be universal around the world but are unlikely to persist into adulthood. METHODS This study utilized accelerometer data from 17,355 participants aged 16-30 years (56% female) measured by validated Polar wearables over a 14-day period. We compared sleep duration, chronotype (sleep midpoint) and weekend catch-up (ie, social jetlag) sleep across ages and regions over 242,948 nights. RESULTS The data indicate a decline in sleep duration as well as a dramatic shift in sleep onset times throughout adolescence. This continues well into early adulthood and stabilizes nearer age 30. Differences in sleep duration across ages were significant, and ranged from 7:53 h at age 16 to 7:29 h at age 30 in the sample. Additionally, there was a clear difference between females and males throughout adolescence and young adulthood: girls had longer sleep duration and earlier timed sleep in the current study. Differences in sleep were found between regions across the world, and across European areas. CONCLUSIONS Both sleep duration and sleep timing go through a clear developmental pattern, particularly in early adulthood. Females had an earlier sleep midpoint and obtained more sleep. Regional differences in sleep occurred across the world.
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Affiliation(s)
- L Kuula
- SleepWell Research Program, Faculty of Medicine, University of Helsinki, Finland.
| | - M Gradisar
- School of Psychology, Flinders University, Adelaide, Australia
| | - K Martinmäki
- Polar Electro Oy, Research and Technology, Finland
| | - C Richardson
- Centre for Emotional Health, Department of Psychology, Macquarie University, Australia
| | - D Bonnar
- School of Psychology, Flinders University, Adelaide, Australia
| | - K Bartel
- School of Psychology, Flinders University, Adelaide, Australia
| | - C Lang
- Department of Sport, Exercise and Health, Section Sport and Psychosocial Health, University of Basel, Switzerland
| | - L Leinonen
- Polar Electro Oy, Research and Technology, Finland
| | - A K Pesonen
- SleepWell Research Program, Faculty of Medicine, University of Helsinki, Finland
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Lang C, Ye D, Song W, Yao C, Tu YM, Capparelli C, LaNasa JA, Hickner MA, Gomez EW, Gomez ED, Hickey RJ, Kumar M. Biomimetic Separation of Transport and Matrix Functions in Lamellar Block Copolymer Channel-Based Membranes. ACS Nano 2019; 13:8292-8302. [PMID: 31251576 DOI: 10.1021/acsnano.9b03659] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cell membranes control mass, energy, and information flow to and from the cell. In the cell membrane a lipid bilayer serves as the barrier layer, with highly efficient molecular machines, membrane proteins, serving as the transport elements. In this way, highly specialized transport properties are achieved by these composite materials by segregating the matrix function from the transport function using different components. For example, cell membranes containing aquaporin proteins can transport ∼4 billion water molecules per second per aquaporin while rejecting all other molecules including salts, a feat unmatched by any synthetic system, while the impermeable lipid bilayer provides the barrier and matrix properties. True separation of functions between the matrix and the transport elements has been difficult to achieve in conventional solute separation synthetic membranes. In this study, we created membranes with distinct matrix and transport elements through designed coassembly of solvent-stable artificial (peptide-appended pillar[5]arene, PAP5) or natural (gramicidin A) model channels with block copolymers into lamellar multilayered membranes. Self-assembly of a lamellar structure from cross-linkable triblock copolymers was used as a scalable replacement for lipid bilayers, offering better stability and mechanical properties. By coassembly of channel molecules with block copolymers, we were able to synthesize nanofiltration membranes with sharp selectivity profiles as well as uncharged ion exchange membranes exhibiting ion selectivity. The developed method can be used for incorporation of different artificial and biological ion and water channels into synthetic polymer membranes. The strategy reported here could promote the construction of a range of channel-based membranes and sensors with desired properties, such as ion separations, stimuli responsiveness, and high sensitivity.
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Malinconico M, Boschi F, Asp J, Lang C, Tieu W, Brini G, Kuan K, Guidi G, Takhar P. Automated production of Cu-64, Zr-89, Ga-68, Ti-45, I-123 and I-124 with a medical cyclotron, using a commercial solid target system. Nucl Med Biol 2019. [DOI: 10.1016/s0969-8051(19)30208-2] [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: 11/26/2022]
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34
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Splinter M, Bostel T, Lang C, Häring P, Debus J, Nicolay N. PO-0846 Dosimetric effects of a novel concept of adaptive radiotherapy for prostate cancer patients. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31266-6] [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: 11/28/2022]
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Gangloff DA, Éthier-Majcher G, Lang C, Denning EV, Bodey JH, Jackson DM, Clarke E, Hugues M, Le Gall C, Atatüre M. Quantum interface of an electron and a nuclear ensemble. Science 2019; 364:62-66. [DOI: 10.1126/science.aaw2906] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 02/08/2019] [Indexed: 11/02/2022]
Abstract
Coherent excitation of an ensemble of quantum objects underpins quantum many-body phenomena and offers the opportunity to realize a memory that stores quantum information. Thus far, a deterministic and coherent interface between a spin qubit and such an ensemble has remained elusive. In this study, we first used an electron to cool the mesoscopic nuclear spin ensemble of a semiconductor quantum dot to the nuclear sideband–resolved regime. We then implemented an all-optical approach to access individual quantized electronic-nuclear spin transitions. Lastly, we performed coherent optical rotations of a single collective nuclear spin excitation—a spin wave. These results constitute the building blocks of a dedicated local memory per quantum-dot spin qubit and promise a solid-state platform for quantum-state engineering of isolated many-body systems.
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36
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Al-Talabany S, Weir-McCall J, Mohan M, Singh J, Mordi I, Gandy S, Khan F, Choy A, Houston G, Pearson E, George J, Struthers A, Lang C. PO022 Metformin and Dapagliflozin Effects On Epicardial Adipose Tissue Area In Prediabetes and Type 2 Diabetes Patients: MRI Evaluation Studies. Glob Heart 2018. [DOI: 10.1016/j.gheart.2018.09.060] [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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37
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Song W, Shen YX, Lang C, Saha P, Zenyuk IV, Hickey RJ, Kumar M. Unique selectivity trends of highly permeable PAP[5] water channel membranes. Faraday Discuss 2018; 209:193-204. [PMID: 29999507 DOI: 10.1039/c8fd00043c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Artificial water channels are a practical alternative to biological water channels for achieving exceptional water permeability and selectivity in a stable and scalable architecture. However, channel-based membrane fabrication faces critical barriers such as: (1) increasing pore density to achieve measurable gains in permeability while maintaining selectivity, and (2) scale-up to practical membrane sizes for applications. Recently, we proposed a technique to prepare channel-based membranes using peptide-appended pillar[5]arene (PAP[5]) artificial water channels, addressing the above challenges. These multi-layered PAP[5] membranes (ML-PAP[5]) showed significantly improved water permeability compared to commercial membranes with similar molecular weight cut-offs. However, due to the distinctive pore structure of water channels and the layer-by-layer architecture of the membrane, the separation behavior is unique and was still not fully understood. In this paper, two unique selectivity trends of ML-PAP[5] membranes are discussed from the perspectives of channel geometry, ion exclusion, and linear molecule transport.
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Affiliation(s)
- Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802 USA.
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38
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Ebert B, Walter K, Maury J, Lang C, Förster J, Blank L, Czarnotta E, Knuf C, Jacobsen S, Guo H, Lewandowski A, Polakowski T. Metabolic engineering of Saccharomyces cerevisiae
for cyclic triterpenoid production. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B. E. Ebert
- RWTH Aachen University; iAMB - Institute of Applied Microbiology; Worringer Weg 1 52056 Aachen Germany
| | - K. Walter
- RWTH Aachen University; iAMB - Institute of Applied Microbiology; Worringer Weg 1 52056 Aachen Germany
| | - J. Maury
- DTU Denmark; Novo Nordisk Foundation Center for Biosustainability; Kemitorvet 220 2800 Lyngby Denmark
| | - C. Lang
- Organobalance GmbH; Gustav-Meyer-Allee 25 13355 Berlin Germany
| | - J. Förster
- DTU Denmark; Novo Nordisk Foundation Center for Biosustainability; Kemitorvet 220 2800 Lyngby Denmark
| | - L. M. Blank
- RWTH Aachen University; iAMB - Institute of Applied Microbiology; Worringer Weg 1 52056 Aachen Germany
| | - E. Czarnotta
- RWTH Aachen University; iAMB - Institute of Applied Microbiology; Worringer Weg 1 52056 Aachen Germany
| | - C. Knuf
- DTU Denmark; Novo Nordisk Foundation Center for Biosustainability; Kemitorvet 220 2800 Lyngby Denmark
| | - S. A. Jacobsen
- DTU Denmark; Novo Nordisk Foundation Center for Biosustainability; Kemitorvet 220 2800 Lyngby Denmark
| | - H. Guo
- RWTH Aachen University; iAMB - Institute of Applied Microbiology; Worringer Weg 1 52056 Aachen Germany
| | - A. Lewandowski
- Organobalance GmbH; Gustav-Meyer-Allee 25 13355 Berlin Germany
| | - T. Polakowski
- Organobalance GmbH; Gustav-Meyer-Allee 25 13355 Berlin Germany
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39
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Shen YX, Song W, Barden DR, Ren T, Lang C, Feroz H, Henderson CB, Saboe PO, Tsai D, Yan H, Butler PJ, Bazan GC, Phillip WA, Hickey RJ, Cremer PS, Vashisth H, Kumar M. Publisher Correction: Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes. Nat Commun 2018; 9:3304. [PMID: 30108220 PMCID: PMC6092424 DOI: 10.1038/s41467-018-05447-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yue-Xiao Shen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.,Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - D Ryan Barden
- Department of Chemical Engineering, University of New Hampshire, Durham, NH, 03824, USA
| | - Tingwei Ren
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Chao Lang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Hasin Feroz
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Codey B Henderson
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Patrick O Saboe
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Daniel Tsai
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Hengjing Yan
- Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Peter J Butler
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Guillermo C Bazan
- Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - William A Phillip
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Robert J Hickey
- Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Paul S Cremer
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Harish Vashisth
- Department of Chemical Engineering, University of New Hampshire, Durham, NH, 03824, USA
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA. .,Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA. .,Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
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Ertl M, Raasch N, Hammel G, Harter K, Lang C. P3. Transtemporal investigation of brain parenchyma elasticity using 2-D shear wave elastography: Definition of age-matched normal values. Clin Neurophysiol 2018. [DOI: 10.1016/j.clinph.2018.04.647] [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: 11/29/2022]
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Al-Talabany S, Weir Mccall J, Mohan M, Singh J, Mordi I, Gandy S, Khan F, Choy A, Houston G, Ewan P, George J, Struthers A, Lang C. P2860MRI evaluation of the impact of metformin and dapagloflizin on epicardial adipose tissue area in prediabetes and type 2 diabetes patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Al-Talabany
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - J Weir Mccall
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - M Mohan
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - J Singh
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - I Mordi
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - S Gandy
- Ninewells Hospital, Dundee, United Kingdom
| | - F Khan
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - A Choy
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - G Houston
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - P Ewan
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - J George
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - A Struthers
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
| | - C Lang
- University of Dundee, Molecular and Clinical Medicine, Dundee, United Kingdom
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Shen YX, Song W, Barden DR, Ren T, Lang C, Feroz H, Henderson CB, Saboe PO, Tsai D, Yan H, Butler PJ, Bazan GC, Phillip WA, Hickey RJ, Cremer PS, Vashisth H, Kumar M. Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes. Nat Commun 2018; 9:2294. [PMID: 29895901 PMCID: PMC5997692 DOI: 10.1038/s41467-018-04604-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 05/09/2018] [Indexed: 01/05/2023] Open
Abstract
Synthetic polymer membranes, critical to diverse energy-efficient separations, are subject to permeability-selectivity trade-offs that decrease their overall efficacy. These trade-offs are due to structural variations (e.g., broad pore size distributions) in both nonporous membranes used for Angstrom-scale separations and porous membranes used for nano to micron-scale separations. Biological membranes utilize well-defined Angstrom-scale pores to provide exceptional transport properties and can be used as inspiration to overcome this trade-off. Here, we present a comprehensive demonstration of such a bioinspired approach based on pillar[5]arene artificial water channels, resulting in artificial water channel-based block copolymer membranes. These membranes have a sharp selectivity profile with a molecular weight cutoff of ~ 500 Da, a size range challenging to achieve with current membranes, while achieving a large improvement in permeability (~65 L m-2 h-1 bar-1 compared with 4-7 L m-2 h-1 bar-1) over similarly rated commercial membranes.
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Affiliation(s)
- Yue-Xiao Shen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Woochul Song
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - D Ryan Barden
- Department of Chemical Engineering, University of New Hampshire, Durham, NH, 03824, USA
| | - Tingwei Ren
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Chao Lang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Hasin Feroz
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Codey B Henderson
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Patrick O Saboe
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Daniel Tsai
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Hengjing Yan
- Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Peter J Butler
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Guillermo C Bazan
- Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - William A Phillip
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Robert J Hickey
- Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Paul S Cremer
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Harish Vashisth
- Department of Chemical Engineering, University of New Hampshire, Durham, NH, 03824, USA
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, 16802, USA.
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Dorsch S, Mann P, Lang C, Haering P, Runz A, Karger CP. Feasibility of polymer gel-based measurements of radiation isocenter accuracy in magnetic fields. Phys Med Biol 2018; 63:11NT02. [PMID: 29722290 DOI: 10.1088/1361-6560/aac228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
For conventional irradiation devices, the radiation isocenter accuracy is determined by star shot measurements on films. In magnetic resonance (MR)-guided radiotherapy devices, the results of this test may be altered by the magnetic field and the need to align the radiation and imaging isocenter may require a modification of measurement procedures. Polymer dosimetry gels (PG) may offer a way to perform both, the radiation and imaging isocenter test, however, first it has to be shown that PG reveal results comparable to the conventionally applied films. Therefore, star shot measurements were performed at a linear accelerator using PG as well as radiochromic films. PG were evaluated using MR imaging and the isocircle radius and the distance between the isocircle center and the room isocenter were determined. Two different types of experiments were performed: i) a standard star-shot isocenter test and (ii) a star shot, where the detectors were placed between the pole shoes of an experimental electro magnet operated either at 0 T or 1 T. For the standard star shot, PG evaluation was independent of the time delay after irradiation (1 h, 24 h, 48 h and 216 h) and the results were comparable to those of film measurements. Within the electro magnet, the isocircle radius increased from 0.39 ± 0.01 mm to 1.37 ± 0.01 mm for the film and from 0.44 ± 0.02 mm to 0.97 ± 0.02 mm for the PG-measurements, respectively. The isocenter distance was essentially dependent on the alignment of the magnet to the isocenter and was between 0.12 ± 0.02 mm and 0.82 ± 0.02 mm. The study demonstrates that evaluation of the PG directly after irradiation is feasible, if only geometrical parameters are of interest. This allows using PG for star shot measurements to evaluate the radiation isocenter accuracy with comparable accuracy as with radiochromic films.
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Affiliation(s)
- S Dorsch
- Department of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), INF 280, 69120 Heidelberg, Germany. Faculty of Physics and Astronomy, University of Heidelberg, Heidelberg, Germany. National Center for Radiation Research in Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Heidelberg, Germany
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Dorsch S, Mann P, Häring P, Lang C, Runz A, Karger C. EP-2171: Feasibility study for polymer gel-based radiation isocenter accuracy test of MR-Linac-devices. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32480-0] [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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Splinter M, Bostel T, Häring P, Lang C, Huber P, Meyerhof E, Debus J, Jäkel O, Nicolay N. PO-0824: Dose effects by interfractional variability of tumor and OAR on the example of prostate-Ca-patients. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31134-4] [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: 10/14/2022]
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Mylius M, Pallasch G, Beyrer K, Allerberger F, Claußen K, Schlager S, Fruth A, Lang C, Prager R, Dreesman J, Mertens E. Enterohämorrhagische Escherichia coli (EHEC)-Erkrankungen in Schulklassen nach Rohmilch-Konsum bei Skifreizeit in Österreich, 2017 – Der ÖGD verhindert weitere Ausbrüche. Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1639295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- M Mylius
- Robert Koch-Institut/NLGA Infektionsepidemiologie, Berlin, Germany
| | - G Pallasch
- Gesundheitsamt Landkreis Stade, Amtsleitung, Stade, Germany
| | - K Beyrer
- Niedersächsisches Landesgesundheitsamt (NLGA), Infektionsepidemiologie, Hannover, Germany
| | - F Allerberger
- Österreichische Agentur für Gesundheit und Ernährungssicherheit, Öffentliche Gesundheit, Graz, Österreich
| | - K Claußen
- Niedersächsisches Landesgesundheitsamt (NLGA), Bakteriologie, Hannover, Germany
| | - S Schlager
- Österreichische Agentur für Gesundheit und Ernährungssicherheit, Bakteriologie, Graz, Österreich
| | - A Fruth
- Robert Koch-Institut NRZ Salmonellen und andere bakterielle Enteritiserreger, Wernigerode, Germany
| | - C Lang
- Robert Koch-Institut NRZ Salmonellen und andere bakterielle Enteritiserreger, Wernigerode, Germany
| | - R Prager
- Robert Koch-Institut NRZ Salmonellen und andere bakterielle Enteritiserreger, Wernigerode, Germany
| | - J Dreesman
- Niedersächsisches Landesgesundheitsamt (NLGA), Infektionsepidemiologie, Hannover, Germany
| | - E Mertens
- Niedersächsisches Landesgesundheitsamt (NLGA), Infektionsepidemiologie, Hannover, Germany
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Lang C, Kolaj-Robin O, Cirefice G, Taconet L, Pel E, Jouette S, Buda M, Milne C, Charton E. Replacement, Reduction, Refinement - Animal welfare progress in European Pharmacopoeia monographs: activities of the European Pharmacopoeia Commission from 2007 to 2017. Pharmeur Bio Sci Notes 2018; 2018:12-36. [PMID: 29845933] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Since the opening for signature of the European Convention for the Protection of Animals Used for Experimental and Other Scientific Purposes in 1986, the European Pharmacopoeia Commission and its experts have carried out a programme of work committed to Replacing, Reducing and Refining (3Rs) the use of animals for test purposes. While updates on achievements in the field of the 3Rs are regularly provided, this article summarises the activities of the Ph. Eur. Commission in this field within the last decade.
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Affiliation(s)
- C Lang
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - O Kolaj-Robin
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - G Cirefice
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - L Taconet
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - E Pel
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - S Jouette
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - M Buda
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - C Milne
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
| | - E Charton
- European Directorate for the Quality of Medicines & Healthcare, Council of Europe, 67081 Strasbourg, France
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Toell T, Mayer L, Pechlaner R, Krebs S, Willeit K, Lang C, Boehme C, Prantl B, Knoflach M, Ferrari J, Fuchs P, Prokop W, Griesmacher A, Lang W, Kiechl S, Willeit J. Familial hypercholesterolaemia in patients with ischaemic stroke or transient ischaemic attack. Eur J Neurol 2017; 25:260-267. [PMID: 29053901 DOI: 10.1111/ene.13485] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 07/18/2017] [Accepted: 10/16/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Identification of patients with familial hypercholesterolaemia (FH) is a prerequisite for the appropriate management of their excess cardiovascular risk. It is currently unknown how many patients with acute ischaemic stroke or transient ischaemic attack (TIA) are affected by FH and whether systematic screening for FH is warranted in these patients. METHODS The prevalence of a clinical diagnosis of FH was estimated in a large representative series of patients with acute ischaemic stroke or TIA (ABCD2 score ≥ 3) using the Dutch Lipid Clinic Network Algorithm (DLCNA; possible FH ≥3, probable/definite FH ≥6). RESULTS Out of 1054 patients included in the present analysis, 14 had probable/definite FH (1.3%; 95% confidence interval 0.6-2.0) and 107 possible FH (10.2%; 8.4-12.0) corresponding to an overall prevalence of potential FH of 11.5%. Prevalences were even higher in patients with stroke/TIA manifestation before age 55 in men or 60 in women (3.1%, 0.6-5.6; and 13.1%, 8.3-17.9) and those with a prior history of cardiovascular disease (2.6%, 0.9-4.3; and 15.1%, 11.3-18.9). Of note, in two-thirds of our patients with probable/definite and possible FH, stroke or TIA was the initial clinical disease manifestation. CONCLUSIONS The frequency of potential FH, based on clinical criteria, in patients with acute ischaemic stroke or TIA was 11.5% and that of probable/definite FH (1.3%) was similar to recently reported counts for patients with acute coronary syndrome (1.6%). FH screening using the DLCNA is feasible in clinical routine and should be considered as part of the usual diagnostic work-up.
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Affiliation(s)
- T Toell
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - L Mayer
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - R Pechlaner
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - S Krebs
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - K Willeit
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - C Lang
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - C Boehme
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - B Prantl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - M Knoflach
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - J Ferrari
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - P Fuchs
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - W Prokop
- Central Institute of Medical and Chemical Laboratory Diagnostics, University Hospital of Innsbruck, Innsbruck, Austria
| | - A Griesmacher
- Central Institute of Medical and Chemical Laboratory Diagnostics, University Hospital of Innsbruck, Innsbruck, Austria
| | - W Lang
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - S Kiechl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - J Willeit
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
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Adams R, Appleton S, Vakulin A, D'Rozario A, McEvoy R, Catcheside P, Martin S, Lang C, Vincent A, Wittert G. Effect of sleep apnea and insomnia on the association of depression with quantitative electroencephalogram measures (QEEG) in adult men during sleep – the MAILES study. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.009] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ferro-Vázquez C, Lang C, Kaal J, Stump D. When is a terrace not a terrace? The importance of understanding landscape evolution in studies of terraced agriculture. J Environ Manage 2017; 202:500-513. [PMID: 28139267 DOI: 10.1016/j.jenvman.2017.01.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 01/13/2017] [Accepted: 01/17/2017] [Indexed: 06/06/2023]
Abstract
Before the invention of modern, large-scale engineering projects, terrace systems were rarely built in single phases of construction, but instead developed gradually, and could even be said to have evolved. Understanding this process of landscape change is therefore important in order to fully appreciate how terrace systems were built and functioned, and is also pivotal to understanding how the communities that farmed these systems responded to changes; whether these are changes to the landscape brought about by the farming practices themselves, or changes to social, economic or climatic conditions. Combining archaeological stratigraphy, soil micromorphology and geochemistry, this paper presents a case-study from the historic and extensive terraced landscape at Konso, southwest Ethiopia, and demonstrates - in one important river valley at least - that the original topsoil and much of the subsoil was lost prior to the construction of hillside terraces. Moreover, the study shows that alluvial sediment traps that were built adjacent to rivers relied on widespread hillside soil erosion for their construction, and strongly suggests that these irrigated riverside fields were formerly a higher economic priority than the hillside terraces themselves; a possibility that was not recognised by numerous observational studies of farming in this landscape. Research that takes into account how terrace systems change through time can thus provide important details of whether the function of the system has changed, and can help assess how the legacies of former practices impact current or future cultivation.
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Affiliation(s)
- C Ferro-Vázquez
- Department of Archaeology, University of York, King's Manor, York, YO1 7EP, UK.
| | - C Lang
- Department of Archaeology, University of York, King's Manor, York, YO1 7EP, UK
| | - J Kaal
- Institute for Heritage Sciences (Incipit), Spanish National Research Council (CSIC), Avenida de Vigo s/n, 15780, Santiago de Compostela, Spain; Departamento de Edafoloxía e Química Agrícola, Fac. Bioloxía, Universidade de Santiago de Compostela, Campus Sur, 15782, Santiago de Compostela, Spain
| | - D Stump
- Department of Archaeology, University of York, King's Manor, York, YO1 7EP, UK
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