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Ding Z, Cui J, Zhang Q, Feng J, Du B, Xue G, Yan C, Gan L, Fan Z, Feng Y, Zhao H, Xu Z, Yu Z, Fu T, Zhang R, Cui X, Tian Z, Chen J, Chen Y, Li Z, Zhong X, Lin Y, Yuan J. Detecting and quantifying Veillonella by real-time quantitative PCR and droplet digital PCR. Appl Microbiol Biotechnol 2024; 108:45. [PMID: 38175238 DOI: 10.1007/s00253-023-12861-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 01/05/2024]
Abstract
Veillonella spp. are Gram-negative opportunistic pathogens present in the respiratory, digestive, and reproductive tracts of mammals. An abnormal increase in Veillonella relative abundance in the body is closely associated with periodontitis, inflammatory bowel disease, urinary tract infections, and many other diseases. We designed a pair of primers and a probe based on the 16S rRNA gene sequences of Veillonella and conducted real-time quantitative PCR (qPCR) and droplet digital PCR (ddPCR) to quantify the abundance of Veillonella in fecal samples. These two methods were tested for specificity and sensitivity using simulated clinical samples. The sensitivity of qPCR was 100 copies/μL, allowing for the accurate detection of a wide range of Veillonella concentrations from 103 to 108 CFU/mL. The sensitivity of ddPCR was 11.3 copies/μL, only allowing for the accurate detection of Veillonella concentrations from 101 to 104 CFU/mL because of the limited number of droplets generated by ddPCR. ddPCR is therefore more suitable for the detection of low-abundance Veillonella samples. To characterize the validity of the assay system, clinical samples from children with inflammatory bowel disease were collected and analyzed, and the results were verified using isolation methods. We conclude that molecular assays targeting the 16S rRNA gene provides an important tool for the rapid diagnosis of chronic and infectious diseases caused by Veillonella and also supports the isolation and identification of Veillonella for research purposes. KEY POINTS: • With suitable primer sets, the qPCR has a wider detection range than ddPCR. • ddPCR is suitable for the detection of low-abundance samples. • Methods successfully guided the isolation of Veillonella in clinical sample.
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Affiliation(s)
- Zanbo Ding
- College of Life Sciences, Northwest A&F University, Yangling, China
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Qun Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Bing Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinfeng Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yujie Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zhoufei Li
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Xuemei Zhong
- Gastroenterology Department, Children's Hospital of Capital Institute of Pediatrics, Beijing, China.
| | - Yanbing Lin
- College of Life Sciences, Northwest A&F University, Yangling, China.
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China.
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Peng D, He Z, Pan X, Zheng R, Bao H, Liao J, Dong L, Li W, Chen J, Li P, Du B. A comparative evaluation of the structure, functionality and volatile profiles of Trichosanthes kirilowii seed protein isolates based on different extraction methods. Food Chem 2024; 443:138547. [PMID: 38271897 DOI: 10.1016/j.foodchem.2024.138547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/17/2024] [Accepted: 01/21/2024] [Indexed: 01/27/2024]
Abstract
In the present study, we hypothesised that Trichosanthes kirilowii seed protein isolate (TPI) obtained by different extraction methods have distinct structure, functional attributes and volatile profiles. Alkaline-extracted isolate (AE-TPI) exhibited lower protein content and a darker colour than the other two isolates because more polyphenols and pigments were coextracted. Salt-extracted isolate (SE-TPI) and AE-TPI had higher in vitro protein digestibility than reverse micelle-extracted isolate (RME-TPI) due to higher degrees of denaturation, which enabled them to be more susceptible to proteolysis. The SE-TPI gel resulted in a stronger gel network and greater hardness than the other two isolate gels. In the volatile profile, SE-TPI (22) yielded the largest number of volatile compounds, followed by AE-TPI (20) and RME-TPI (15). The current results indicated that the structure, functional properties and volatile profiles of TPI are largely influenced by the extraction technique.
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Affiliation(s)
- Dong Peng
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhilin He
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiangmin Pan
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Rui Zheng
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Hanxiao Bao
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Jingru Liao
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Ling Dong
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Weiwen Li
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong 999077, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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Wu Y, Li Y, Liu H, Li P, Du B, Xie XA, Li L. Covalent conjugation of Inca peanut albumin and polyphenols with different phenolic hydroxyl numbers through laccase catalysis to improve functional properties. J Sci Food Agric 2024; 104:4028-4038. [PMID: 38252689 DOI: 10.1002/jsfa.13285] [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] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
BACKGROUND Enzymatic crosslinking is a method that can be used to modify Inca peanut albumin (IPA) using polyphenols, and provides desirable functionalities; however, the effect of polyphenol structures on conjugate properties is unclear. In this study, we selected four polyphenols with different numbers of phenolic hydroxyl groups [para-hydroxybenzoic acid (HBA), protocatechuic acid (PCA), gallic acid (GA), and epigallocatechin gallate (EGCG)] for covalent modification of IPA by enzymatic crosslinking, and explored the structure-function changes of the IPA-polyphenol conjugates. RESULTS Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis showed that laccase successfully promoted covalent crosslinking of IPA with polyphenols, with the order of degree of conjugation as EGCG > GA > PCA > HBA, the IPA-EGCG conjugate showed the highest polyphenol binding equivalents (98.35 g kg-1 protein), and a significant reduction in the content of free amino, sulfhydryl, and tyrosine group. The oxidation of polyphenols by laccase forms quinone or semiquinone radicals that are covalently crosslinked to the reactive groups of IPA, leading to significant changes in the secondary and tertiary structures of IPA, with spherical structures transforming into dense lamellar structures. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability and emulsification stability of IPA-EGCG conjugates improved by almost 6-fold and 2.7-fold, respectively, compared with those of unmodified IPA. CONCLUSION These data suggest that the higher the number of polyphenol hydroxyl groups, the higher the degree of IPA-polyphenol conjugation; additionally, enzymatic crosslinking can significantly improve the functional properties of IPA. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yongqing Wu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yanxin Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Honglang Liu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xin-An Xie
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Lu Li
- College of Food Science, South China Agricultural University, Guangzhou, China
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Fan Q, Li L, Yang H, Xu D, Wang Y, Jin B, Du B. Development and validation of a new multiplex panel using SNaPshot-based DIP-TriSNP markers for forensic DNA mixtures. Electrophoresis 2024. [PMID: 38651903 DOI: 10.1002/elps.202300215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/28/2024] [Accepted: 03/10/2024] [Indexed: 04/25/2024]
Abstract
Short tandem repeat analysis is challenging when dealing with unbalanced mixtures in forensic cases due to the presence of stutter peaks and large amplicons. In this research, we propose a novel genetic marker called DIP-TriSNP, which combines deletion/insertion polymorphism (DIP) with tri-allelic single nucleotide polymorphism in less than 230 bp length of human genome. Based on multiplex PCR and SNaPShot, a panel, including 14 autosomal DIP-TriSNPs and one Y chromosomal DIP-SNP, had been developed and applied to genotyping 102 unrelated Han Chinese individuals in Sichuan of China and simulated a mixture study. The panel sensitivity can reach as low as 0.1 ng DNA template, and the minor contributor of DNA can be detected with the highest ratio of 19:1, as indicated by the obtained results. In the Sichuan Han population, the cumulative probability of informative genotypes reached 0.997092, with a combined power of discrimination of 0.999999998801. The panel was estimated to detect more than two alleles in at least one locus in 99.69% of mixtures of the Sichuan Han population. In conclusion, DIP-TriSNPs have shown promising as an innovative DNA marker for identifying the minor contributor in unbalanced DNA mixtures, offering advantages such as short amplifications, increased polymorphism, and heightened sensitivity.
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Affiliation(s)
- Qingwei Fan
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Ling Li
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Huiling Yang
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Dongdong Xu
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Yun Wang
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Bo Jin
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
| | - Bing Du
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
- Forensic Science Service Center of North Sichuan Medical College, Nanchong, Sichuan Province, P. R. China
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He Z, Zeng J, Hu J, Chen J, Peng D, Du B, Li P. Effects of cooking methods on the physical properties and in vitro digestibility of starch isolated from Chinese yam. Int J Biol Macromol 2024; 267:131597. [PMID: 38621567 DOI: 10.1016/j.ijbiomac.2024.131597] [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] [Received: 12/09/2023] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 04/17/2024]
Abstract
The objective of this study was to compare the structural and functional attributes of Chinese yam starches obtained via different domestic cooking methods. Cooking changed the crystalline type from the C type to the CB type, and disrupted the short- and long-range molecular order of Chinese yam starch. The average chain length of amylopectin in BOS (boiling starch) was the smallest at 22.78, while RWS had the longest average chain length, reaching 24.24. These alterations in molecular structure resulted in variations in functional properties such as solubility, swelling power (SP), pasting characteristics, and rheological properties. Among these alterations, boiling was the most effective method for increasing the water-binding capacity and SP of starch. Specifically, its water holding capacity was 2.12 times that of RWS. In vitro digestion experiments indicated that BOS has a higher digestion rate (k = 0.0272 min-1) and lower RDS (rapidly digestible starch), which may be related to its amylopectin chain length distribution. This study can guide us to utilize yam starch through suitable cooking methods, which is relevant for the processing and application of Chinese yam starch.
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Affiliation(s)
- Zhilin He
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Jieyu Zeng
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Jianjun Hu
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Jiahuan Chen
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Dong Peng
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510640, China.
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Tao X, Gao D, Zhang W, Liu T, Du B, Zhang S, Qin Y. A multimodal physiological dataset for driving behaviour analysis. Sci Data 2024; 11:378. [PMID: 38609440 PMCID: PMC11014944 DOI: 10.1038/s41597-024-03222-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
Physiological signal monitoring and driver behavior analysis have gained increasing attention in both fundamental research and applied research. This study involved the analysis of driving behavior using multimodal physiological data collected from 35 participants. The data included 59-channel EEG, single-channel ECG, 4-channel EMG, single-channel GSR, and eye movement data obtained via a six-degree-of-freedom driving simulator. We categorized driving behavior into five groups: smooth driving, acceleration, deceleration, lane changing, and turning. Through extensive experiments, we confirmed that both physiological and vehicle data met the requirements. Subsequently, we developed classification models, including linear discriminant analysis (LDA), MMPNet, and EEGNet, to demonstrate the correlation between physiological data and driving behaviors. Notably, we propose a multimodal physiological dataset for analyzing driving behavior(MPDB). The MPDB dataset's scale, accuracy, and multimodality provide unprecedented opportunities for researchers in the autonomous driving field and beyond. With this dataset, we will contribute to the field of traffic psychology and behavior.
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Affiliation(s)
- Xiaoming Tao
- Tsinghua University, Department of Electronic Engineering, Beijing, 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), 100084, Beijing, China
| | - Dingcheng Gao
- Tsinghua University, Department of Electronic Engineering, Beijing, 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), 100084, Beijing, China
| | - Wenqi Zhang
- Tsinghua University, Department of Electronic Engineering, Beijing, 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), 100084, Beijing, China
| | - Tianqi Liu
- Tsinghua University, Department of Electronic Engineering, Beijing, 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), 100084, Beijing, China
| | - Bing Du
- University of Science and Technology Beijing, School of Computer and Communication Engineering, Beijing, 100083, China
| | - Shanghang Zhang
- National Key Laboratory for Multimedia Information Processing, School of Computer Science, Peking University, Beijing, 100871, China
| | - Yanjun Qin
- Tsinghua University, Department of Electronic Engineering, Beijing, 100084, China.
- Beijing National Research Center for Information Science and Technology (BNRist), 100084, Beijing, China.
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Du B, Xu Y, Li Z, Ji S, Ren C, Li M, Zhang K, Ma T. Efficacy of allogeneic tendon material coracoclavicular ligament reconstruction combined with Kirschner wire and titanium alloy hook plate material fixation in the treatment of acromioclavicular joint dislocation. Front Bioeng Biotechnol 2024; 12:1388905. [PMID: 38650748 PMCID: PMC11033373 DOI: 10.3389/fbioe.2024.1388905] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 03/26/2024] [Indexed: 04/25/2024] Open
Abstract
Objective To compare the effects of allogeneic tendon coracoclavicular ligament reconstruction combined with Kirschner wire fixation and clavicular hook plate fixation on early postoperative pain, postoperative shoulder joint function score and shoulder joint mobility in patients with acromioclavicular joint dislocation. Methods From January 2020 to January 2023, 43 patients with acromioclavicular joint dislocation admitted to Xi 'an Honghui Hospital were included. Among them, 24 patients were treated with the clavicular hook plate technique (Hook Plate,HP) group, and 19 patients were treated with allogeneic tendon coracoclavicular ligament reconstruction combined with the Kirschner wire technique (Allogeneic Tendon, AT) group. The Constant-Murley score of shoulder joint function 6 months after operation, postoperative shoulder joint activity, preoperative and postoperative pain, operation time, intraoperative blood loss and complications were compared between the two groups. Results All 43 patients were followed up for an average of 9.7 (9-12) months. The intraoperative blood loss in the allogeneic tendon group was less than in the hook plate group. The Constant-Murley shoulder function score was higher than that in the hook plate group 6 months after the operation. The abduction and lifting activity was greater than that in the hook plate group. The visual analogue scale scores at 3 days and 14 days after operation were lower than those in the hook plate group. The difference was statistically significant (p < 0.001). There was 1 case (5.3%) of exudation around the Kirschner needle track in the allogeneic tendon reconstruction group, and 5 cases (20.8%) of complications in the hook plate group, including 1 case of internal fixation stimulation, 2 cases of acromion impingement syndrome, 1 case of acromioclavicular joint osteoarthritis, and 1 case of shoulder joint stiffness. The complication rate of the allogeneic tendon group was lower than that of the hook plate group. Conclusion The clinical efficacy of allogeneic tendon coracoclavicular ligament reconstruction combined with Kirschner wire fixation in treating acromioclavicular joint dislocation (Rockwood type III-V) is better than hook plate internal fixation. The patients have less early postoperative pain and better recovery of shoulder joint function and shoulder joint mobility.
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Affiliation(s)
- Bing Du
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yibo Xu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Zhao Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Medical College of Yan’an University, Yan’an, Shaanxi, China
| | - Shuai Ji
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Cheng Ren
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Ming Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Kun Zhang
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Teng Ma
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Xiao Z, Huang H, Hu S, Weng Z, Huang Y, Du B, Zeng X, Meng Y, Huang C. Bifunctional Square-Planar NiO 4 Coordination of Topotactic LaNiO 2.0 Films for Efficient Oxygen Evolution Reaction. Small Methods 2024; 8:e2300793. [PMID: 38009512 DOI: 10.1002/smtd.202300793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/15/2023] [Indexed: 11/29/2023]
Abstract
The high-efficient and low-cost oxygen evolution reaction (OER) is decisive for applications of oxide catalysts in metal-air batteries, electrolytic cells, and energy-storage technologies. Delicate regulations of active surface and catalytic reaction pathway of oxide materials principally determine thermodynamic energy barrier and kinetic rate during catalytic reactions, and thus have crucial impacts on OER performance. Herein, a synergistic modulation of catalytically active surface and reaction pathway through facile topotactic transformations switching from perovskite (PV) LaNiO3.0 film to infinite-layer (IL) LaNiO2.0 film is demonstrated, which absolutely contributes to improving OER performance. The square-planar NiO4 coordination of IL-LaNiO2.0 brings about more electrochemically active metal (Ni+ ) sites on the film surface. Meanwhile, the oxygen-deficient driven PV- IL topotactic transformations lead to a reaction pathway converted from absorbate evolution mechanism to lattice-oxygen-mediated mechanism (LOM). The non-concerted proton-electron transfer of LOM pathway, evidenced by the pH-dependent OER kinetics, further boosts the OER activity of IL-LaNiO2.0 films. These findings will advance the in-depth understanding of catalytic mechanisms and open new possibilities for developing highly active perovskite-derived oxide catalysts.
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Affiliation(s)
- Zhifei Xiao
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Haoliang Huang
- Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Sixia Hu
- Sustech Core Research Facilities, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Zhuanglin Weng
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yuping Huang
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Bing Du
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xierong Zeng
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yuying Meng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Chuanwei Huang
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
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Lin T, Wen WL, Du J, Wu Z, Kong XK, Duan WB, Zhang XY, Du B, Cai YL, Cui YQ. [Safety and efficacy of acute stent implantation during endovascular treatment for patients with emergent large vessel occlusion due to intracranial atherosclerotic stenosis]. Zhonghua Nei Ke Za Zhi 2024; 63:272-278. [PMID: 38448190 DOI: 10.3760/cma.j.cn112138-20231031-00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Objective: To investigate the efficacy and safety of acute stent implantation during endovascular treatment for patients with emergent large vessel occlusion due to intracranial atherosclerotic stenosis. Methods: A retrospective analysis was carried out on 46 patients with emergent large vessel occlusion due to intracranial atherosclerotic stenosis who received endovascular treatment at the Strategic Support Force Medical Center from January 2015 to August 2022. Twenty-seven patients underwent balloon angioplasty alone and 19 patients underwent acute stent implantation. The baseline characteristics, modified thrombolysis in cerebral infarction (mTICI) score of the responsible vessels, modified Rankin scale (mRS) score 90 days after operation, incidence of symptomatic intracranial hemorrhage and mortality of the two groups were evaluated. Results: The proportion of effective recanalization of the offending vessels (mTICI≥2b) in the acute stenting group was slightly higher than that in the balloon angioplasty group (16/19 vs. 81.5%), but the difference was not statistically significant (P>0.05). Besides, there was no significant difference in the median of mRS between the acute stenting group [3.0(0, 4.0)] and the balloon angioplasty group [4.0(1.0, 5.0)] 90 days after operation (P>0.05). In terms of safety, the incidence of symptomatic intracranial hemorrhage and mortality were comparable between the two groups (P>0.05). Conclusions: The effect of acute stent implantation during endovascular treatment for patients with emergent large vessel occlusion due to intracranial atherosclerotic stenosis is not inferior to that of balloon angioplasty, and it does not increase the risk of intracranial bleeding complications.
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Affiliation(s)
- T Lin
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - W L Wen
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - J Du
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Z Wu
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - X K Kong
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - W B Duan
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - X Y Zhang
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - B Du
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Y L Cai
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Y Q Cui
- Department of Neurology, Strategic Support Force Medical Center, Beijing 100101, China
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Huang J, Chen Y, Su Y, Yuan W, Peng D, Guan Z, Chen J, Li P, Du B. Identification of carbohydrate in Polygonatum kingianum Coll. et Hemsl and inhibiting oxidative stress. Int J Biol Macromol 2024; 261:129760. [PMID: 38286375 DOI: 10.1016/j.ijbiomac.2024.129760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/17/2023] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
The specific structure of Polygonatum kingianum Coll. et Hemsl polysaccharide (PKP) has been rarely reported. In this study, an inulin-type fructan PKP-1, was extracted and purified from Polygonatum kingianum Coll. et Hemsl, and its structural characteristics and antioxidants activity were evaluated. The molecular weights of PKP-1 was determined to be 4.802 kDa. Monosaccharide composition analysis evidenced that PKP-1 was composed of galactose, glucose and fructose in a molar ratio of 0.8 %:7.2 %:92.0 %. Glycosidic linkage and Nuclear Magnetic Resonance (NMR) analysis revealed that PKP-1 exhibited a primary sugar residue linkage of →1-β-d-Fruf-2→2,6-β-d-Fruf-1→, where β-d-Fruf-2→ acts as the side chain and links to the C-6 position of →2,6-β-d-Fruf-1→. In vitro antioxidant activity assays demonstrated that PKP-1 enhanced the mitigation of hepatic oxidative stress in HepG2 cells induced by free fatty acids. This effect was marked by increased enzymatic activities of superoxidase dismutase (SOD) and catalase (CAT), along with elevated glutathione (GSH) levels. These findings indicate that PKP-1 could be used as a potential natural antioxidant.
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Affiliation(s)
- Junyuan Huang
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Yanlan Chen
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Yi Su
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Wanqing Yuan
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Dong Peng
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Ziwen Guan
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Pan Li
- South China Agricultural University, College of Food Science, Guangzhou 510642, China
| | - Bing Du
- South China Agricultural University, College of Food Science, Guangzhou 510642, China.
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11
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Zhao Z, Qin J, Qian Y, Huang C, Liu X, Wang N, Li L, Chao Y, Tan B, Zhang N, Qian M, Li D, Liu M, Du B. FFAR2 expressing myeloid-derived suppressor cells drive cancer immunoevasion. J Hematol Oncol 2024; 17:9. [PMID: 38402237 PMCID: PMC10894476 DOI: 10.1186/s13045-024-01529-6] [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: 09/05/2023] [Accepted: 02/17/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Emerging evidences suggest that aberrant metabolites contributes to the immunosuppressive microenvironment that leads to cancer immune evasion. Among tumor immunosuppressive cells, myeloid-derived suppressor cells (MDSCs) are pathologically activated and extremely immunosuppressive, which are closely associated with poor clinical outcomes of cancer patients. However, the correlation between MDSCs mediated immunosuppression and particular cancer metabolism remained elusive. METHODS Spontaneous lung adenocarcinoma and subcutaneous mouse tumor models, gas chromatography-mass spectrometry (GC-MS) and immunofluorescence assay of patient-derived lung adenocarcinoma tissues, and flow cytometry, RNA sequencing and Western blotting of immune cells, were utilized. RESULTS Metabolite profiling revealed a significant accumulation of acetic acids in tumor tissues from both patients and mouse model, which contribute to immune suppression and cancer progression significantly through free fatty acid receptor 2 (FFAR2). Furthermore, FFAR2 is highly expressed in the myeloid-derived suppressor cells (MDSCs) from the tumor of lung adenocarcinoma (LUAD) patients which is greatly associated with poor prognosis. Surprisingly, whole or myeloid Ffar2 gene deletion markedly inhibited urethane-induced lung carcinogenesis and syngeneic tumor growth with reduced MDSCs and increased CD8+ T cell infiltration. Mechanistically, FFAR2 deficiency in MDSCs significantly reduced the expression of Arg1 through Gαq/Calcium/PPAR-γ axis, which eliminated T cell dysfunction through relieving L-Arginine consumption in tumor microenvironment. Therefore, replenishment of L-Arginine or inhibition to PPAR-γ restored acetic acids/FFAR2 mediated suppression to T cells significantly. Finally, FFAR2 inhibition overcame resistance to immune checkpoint blockade through enhancing the recruitment and cytotoxicity of tumor-infiltrating T cells. CONCLUSION Altogether, our results demonstrate that the acetic acids/FFAR2 axis enhances MDSCs mediated immunosuppression through Gαq/calcium/PPAR-γ/Arg1 signaling pathway, thus contributing to cancer progression. Therefore, FFAR2 may serve as a potential new target to eliminate pathologically activated MDSCs and reverse immunosuppressive tumor microenvironment, which has great potential in improving clinical outcomes of cancer immunotherapy.
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Affiliation(s)
- Zeda Zhao
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Juliang Qin
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Ying Qian
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | | | - Xiaohong Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Ning Wang
- Huzhou Central Hospital, Affiliated Hospital of Zhejiang University, Zhejiang, China
| | - Liqin Li
- Huzhou Central Hospital, Affiliated Hospital of Zhejiang University, Zhejiang, China
| | - Yuqing Chao
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | | | - Na Zhang
- BRL Medicine Inc., Shanghai, China
| | - Min Qian
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Dali Li
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Mingyao Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Bing Du
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.
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12
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Li Y, Liu H, Wu Y, Li P, Du B, Xie XA, Li L. Differences in the structural properties of three OSA starches and their effects on the performance of high internal phase Pickering emulsions. Int J Biol Macromol 2024; 258:128992. [PMID: 38151085 DOI: 10.1016/j.ijbiomac.2023.128992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/14/2023] [Accepted: 12/21/2023] [Indexed: 12/29/2023]
Abstract
The emulsifying properties of emulsions are significantly influenced by the structural properties of octenyl succinic anhydride (OSA) starch. The purpose of this work was to elucidate the effect of the structure of OSA starch on its performance as an emulsifier to stabilize Pickering high-internal-phase emulsions (HIPEs). The degrees of substitution (DS) of the three OSA starches were 0.0137, 0.0177 and 0.0236, and their degrees of branching (DB) were 13.96 %, 14.20 % and 14.32 % measured by 1H NMR, which were sequentially labeled as OSA1, OSA2, and OSA3. The OSA3 starch with higher DS and DB had a lower critical micelle concentration (CMC) (0.11 mg/mL). Its emulsification activity (EAI) and emulsion stability (ES) were 61.8 m2/g and 72.5 min, respectively, which were higher than OSA1 and OSA2 starches. The contact angle of the three OSA starches increased from 45.35° to 80.03° with increasing DS and DB. Therefore, it is hypothesized that OSA3 starches have better emulsification properties. The results of physical stability of HIPEs confirmed the above results. These results indicated that DS and DB have a synergistic effect on emulsion properties, and OSA starch with higher DS and DB values were more conducive to the construction of stable HIPEs systems.
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Affiliation(s)
- Yanxin Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Honglang Liu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Yongqing Wu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xin-An Xie
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Lu Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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13
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Wang K, Xu Y, Huang H, Peng D, Chen J, Li P, Du B. Porcupine quills keratin peptides induces G0/G1 cell cycle arrest and apoptosis via p53/p21 pathway and caspase cascade reaction in MCF-7 breast cancer cells. J Sci Food Agric 2024; 104:1741-1755. [PMID: 37862230 DOI: 10.1002/jsfa.13065] [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] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 09/29/2023] [Accepted: 10/20/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND Porcupine quills, a by-product of porcupine pork, are rich in keratin, which is an excellent source of bioactive peptides. The objective of this study was to investigate the underlying mechanism of anti-proliferation effect of porcupine quills keratin peptides (PQKPs) on MCF-7 cells. RESULTS Results showed that PQKPs induced MCF-7 cells apoptosis by significantly decreasing the secretion level of anti-apoptosis protein Bcl-2 and increasing the secretion levels of pro-apoptosis proteins Bax, cytochrome c, caspase 9, caspase 3 and PARP. PQKPs also arrested the cell cycle at G0/G1 phase via remarkably reducing the protein levels of CDK4 and enhancing the protein levels of p53 and p21. High-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) analysis identified nine peptides with molecular weights less than 1000 Da in PQKPs. Molecular docking results showed that TPGPPT and KGPAC identified from PQKPs could bind with p53 mutant and Bcl-2 protein by conventional hydrogen bonds, carbon hydrogen bonds and van der Waals force. Furthermore, the anti-proliferation impact of synthesized peptides (TPGPPT and KGPAC) was shown in MCF-7 cells. CONCLUSION These findings indicated that PQKPs suppressed the proliferation of MCF-7 breast cancer cells by triggering apoptosis and G0/G1 cell cycle arrest. Moreover, the outcome of this study will bring fresh insights into the production and application of animal byproducts. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Kun Wang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yanan Xu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Haozhang Huang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Dong Peng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
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14
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Zhang W, Wu B, Liang M, Zhang M, Hu Y, Huang ZS, Ye X, Du B, Quan YY, Jiang Y. A lysosome-targeted fluorescent probe based on a BODIPY structure for Cys/Hcy detection. Anal Methods 2024; 16:686-694. [PMID: 38205809 DOI: 10.1039/d3ay01965a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Cysteine (Cys) and homocysteine (Hcy) are important biothiols in living organisms. They play important roles in a variety of physiological and pathological processes. Therefore, it is very important to design an optical probe for the selective detection of Cys/Hcy. Herein, we report the design and synthesis of a fluorescent probe NBD-B-T based on a boron-dipyrromethene (BODIPY) structure, which showed an excellent lysosome targeting ability and an outstanding Cys/Hcy detection capacity. For NBD-B-T, the sensing group 7-nitro-2,1,3-benzoxadiazole (NBD) and the lysosomal targeting group morpholine were introduced. The results show that the NBD-B-T probe can detect Cys/Hcy with fluorescence emission turn-on performance. The low detection limits of this probe are about 76.0 nM for Hcy and 97.6 nM for Cys, respectively. The NBD-B-T probe has a low detection limit, high stability, and excellent selectivity and sensitivity. More importantly, the NBD-B-T can target lysosome, and simultaneously detect the Cys/Hcy in living cells.
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Affiliation(s)
- Wenxuan Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Binbin Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Manshan Liang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Mengpei Zhang
- The Affiliated Xiangshan Hospital of Wenzhou Medical University: Xiangshan First People's Hospital Medical and Health Group, Xiangshan 315700, China.
| | - Yutao Hu
- The Affiliated Xiangshan Hospital of Wenzhou Medical University: Xiangshan First People's Hospital Medical and Health Group, Xiangshan 315700, China.
| | - Zu-Sheng Huang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Xiaoxia Ye
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Bing Du
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.
| | - Yun-Yun Quan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Yongsheng Jiang
- The Affiliated Xiangshan Hospital of Wenzhou Medical University: Xiangshan First People's Hospital Medical and Health Group, Xiangshan 315700, China.
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15
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Sui Y, Liu Q, Xu C, Ganesan K, Ye Z, Li Y, Wu J, Du B, Gao F, Song C, Chen J. Non-alcoholic fatty liver disease promotes breast cancer progression through upregulated hepatic fibroblast growth factor 21. Cell Death Dis 2024; 15:67. [PMID: 38238320 PMCID: PMC10796330 DOI: 10.1038/s41419-023-06386-8] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 01/22/2024]
Abstract
Non-alcoholic fatty liver disease (NAFLD) has been shown to influence breast cancer progression, but the underlying mechanisms remain unclear. In this study, we investigated the impact of NAFLD on breast cancer tumor growth and cell viability through the potential mediator, hepatic fibroblast growth factor 21 (FGF21). Both peritumoral and systemic administration of FGF21 promoted breast cancer tumor growth, while FGF21 knockout attenuated the tumor-promoting effects of the high-fat diet. Mechanistically, exogenous FGF21 treatment enhanced the anti-apoptotic ability of breast cancer cells through STAT3 and Akt/FoXO1 signaling pathways, and mitigated doxorubicin-induced cell death. Furthermore, we observed overexpression of FGF21 in tumor tissues from breast cancer patients, which was associated with poor prognosis. These findings suggest a novel role for FGF21 as an upregulated mediator in the context of NAFLD, promoting breast cancer development and highlighting its potential as a therapeutic target for cancer treatment.
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Affiliation(s)
- Yue Sui
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Qingqing Liu
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Cong Xu
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Kumar Ganesan
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Zhen Ye
- Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, China
| | - Yan Li
- Xiamen University, 361005, Xiamen, China
| | - Jianmin Wu
- School of Pharmacy, Southwest Medical University, 646000, Luzhou, China
| | - Bing Du
- South China Agricultural University, 510000, Guangzhou, China
| | - Fei Gao
- Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, China
| | - Cailu Song
- Sun Yat-Sen University Cancer Center, 510000, Guangzhou, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China.
- Shenzhen Institute of Research and Innovation, The University of Hong Kong, 518000, Shenzhen, China.
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16
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Chen X, Tan B, Xing H, Zhao X, Ping Y, Zhang Z, Huang J, Shi X, Zhang N, Lin B, Cao W, Li X, Zhang X, Li L, Jiang Z, Zhang M, Li W, Liu M, Du B, Zhang Y. Allogeneic CAR-T cells with of HLA-A/B and TRAC disruption exhibit promising antitumor capacity against B cell malignancies. Cancer Immunol Immunother 2024; 73:13. [PMID: 38231412 PMCID: PMC10794471 DOI: 10.1007/s00262-023-03586-1] [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: 07/18/2023] [Accepted: 11/03/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Although chimeric antigen receptor T (CAR-T) cells have been proven to be an effective way of treating B cell malignancies, a lot of patients could not benefit from it because of failure in CAR-T cell manufacturing, disease progression, and unaffordable price. The study aimed to explore universal CAR-T cell products to extend the clinical accessibility. METHODS The antitumor activity of CRISPR/Cas9-edited allogeneic anti-CD19 CAR-T (CAR-T19) cells was assessed in vitro, in animal models, and in patients with relapsed/refractory (R/R) acute B cell lymphoblastic leukemia (B-ALL) or diffuse large B cell lymphoma. RESULTS B2M-/TRAC- universal CAR-T19 (U-CAR-T19) cells exhibited powerful anti-leukemia abilities both in vitro and in animal models, as did primary CD19+ leukemia cells from leukemia patients. However, expansion, antitumor efficacy, or graft-versus-host-disease (GvHD) was not observed in six patients with R/R B cell malignancies after U-CAR-T19 cell infusion. Accordingly, significant activation of natural killer (NK) cells by U-CAR-T19 cells was proven both clinically and in vitro. HLA-A-/B-/TRAC- novel CAR-T19 (nU-CAR-T19) cells were constructed with similar tumoricidal capacity but resistance to NK cells in vitro. Surprisingly, robust expansion of nU-CAR-T19 cells, along with rapid eradication of CD19+ abnormal B cells, was observed in the peripheral blood and bone marrow of another three patients with R/R B-ALL. The patients achieved complete remission with no detectable minimal residual disease 14 days after the infusion of nU-CAR-T19 cells. Two of the three patients had grade 2 cytokine release syndrome, which were managed using an IL-6 receptor blocker. Most importantly, GvHD was not observed in any patient, suggesting the safety of TRAC-disrupted CAR-T cells generated using the CRISPR/Cas9 method for clinical application. CONCLUSIONS The nU-CAR-T19 cells showed a strong response in R/R B-ALL. nU-CAR-T19 cells have the potential to be a promising new approach for treating R/R B cell malignancies.
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Affiliation(s)
- Xinfeng Chen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Binghe Tan
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
- BRL Medicine Inc, Shanghai, 201109, China
| | - Haizhou Xing
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xuan Zhao
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yu Ping
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhen Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Jianmin Huang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | | | - Na Zhang
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Boxu Lin
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Weijie Cao
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xin Li
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xudong Zhang
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Ling Li
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhongxing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Mingzhi Zhang
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Wei Li
- BRL Medicine Inc, Shanghai, 201109, China
| | - Mingyao Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Bing Du
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou, 450052, Henan, China.
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Engineering Key Laboratory for Cell Therapy of Henan Province, Zhengzhou, 450052, Henan, China.
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Liu M, Wang Y, Du B. Update on the association between Helicobacter pylori infection and asthma in terms of microbiota and immunity. Allergy Asthma Clin Immunol 2024; 20:4. [PMID: 38221621 PMCID: PMC10788013 DOI: 10.1186/s13223-024-00870-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 01/01/2024] [Indexed: 01/16/2024]
Abstract
H. pylori is a gram-negative bacterium that is usually acquired in childhood and can persistently colonize the gastric mucosa of humans, affecting approximately half of the world's population. In recent years, the prevalence of H. pylori infection has steadily reduced while the risk of allergic diseases has steadily climbed. As a result, epidemiological research indicates a strong negative association between the two. Moreover, numerous experimental studies have demonstrated that eradicating H. pylori increases the risk of allergic diseases. Hence, it is hypothesized that H. pylori infection may act as a safeguard against allergic diseases. The hygiene hypothesis, alterations in gut microbiota, the development of tolerogenic dendritic cells, and helper T cells could all be involved in H. pylori's ability to protect against asthma. Furthermore, Studies on mice models have indicated that H. pylori and its extracts are crucial in the management of asthma. We reviewed the in-depth studies on the most recent developments in the relationship between H. pylori infection and allergic diseases, and we discussed potential mechanisms of the infection's protective effect on asthma in terms of microbiota and immunity. We also investigated the prospect of the application of H. pylori and its related components in asthma, so as to provide a new perspective for the prevention or treatment of allergic diseases.
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Affiliation(s)
- Mengmeng Liu
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yong Wang
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bing Du
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
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18
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Liang Y, Hu M, Zhang M, Du B, Hou L, Zhang X, Zhang W. Fluctuations in influenza virus and respiratory syncytial virus infections in children before, during and after the COVID-19 pandemic. J Hosp Infect 2024; 143:218-220. [PMID: 37757918 DOI: 10.1016/j.jhin.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/12/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023]
Affiliation(s)
- Y Liang
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - M Hu
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - M Zhang
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - B Du
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - L Hou
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - X Zhang
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
| | - W Zhang
- Henan International Joint Laboratory for Prevention and Treatment of Paediatric Disease, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
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Gao J, Pei H, Lv F, Niu X, You Y, He L, Hu S, Shah KM, Liu M, Chen Y, Du B, Xiong H, Luo J. JD-312 - A novel small molecule that facilitates cartilage repair and alleviates osteoarthritis progression. J Orthop Translat 2024; 44:60-71. [PMID: 38269355 PMCID: PMC10805627 DOI: 10.1016/j.jot.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/12/2023] [Accepted: 11/21/2023] [Indexed: 01/26/2024] Open
Abstract
Background The chondrogenic differentiation of mesenchymal stem cells (MSCs) to enhance cartilage repair and regeneration is a promising strategy to alleviate osteoarthritis (OA) progression. Method The potency of JD-312 in inducing chondrogenic differentiation of MSCs was assessed and verified. The efficacy of JD-312-treated MSCs was evaluated using a Sprague-Dawley rat DMM model. Additionally, the capacity of JD-312 to successfully recruit bone marrow-derived mesenchymal stem cells (BMSCs) for the treatment of OA in vitro was confirmed via intra-articular injection. The repair status of the articular cartilage was analyzed in vivo through histological examination. Result In this study, we identify JD-312 as a novel non-toxic small molecule that can promote chondrogenic differentiation in human umbilical cord-derived MSCs (hUCMSCs) and human bone marrow MSCS (hBMSCs) in vitro. We also show that transient differentiation of MSCs with JD-312 prior to in vivo administration remarkably improves the regeneration of cartilage and promotes Col2a1 and Acan expression in rat models of DMM, in comparison to kartogenin (KGN) pre-treatment or MSCs alone. Furthermore, direct intra-articular injection of JD-312 in murine model of OA showed reduced loss of articular cartilage and improved pain parameters. Lastly, we identified that the effects of JD-312 are at least in part mediated via upregulation of genes associated with the focal adhesion, PI3K-Akt signaling and the ECM-receptor interaction pathways, and specifically cartilage oligomeric matrix protein (COMP) may play a vital role. Conclusion Our study demonstrated that JD-312 showed encouraging repair effects for OA in vivo. The translational potential of this article Together, our findings demonstrate that JD-312 is a promising new therapeutic molecule for cartilage regeneration with clinical potential.
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Affiliation(s)
- Jingduo Gao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Haixiang Pei
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
- Institute for Advanced Study, Shenzhen University and Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, PR China
| | - Fang Lv
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Xin Niu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yu You
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Liang He
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China
| | - Shijia Hu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Karan M. Shah
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield, United Kingdom
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yihua Chen
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Bing Du
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Hai Xiong
- Institute for Advanced Study, Shenzhen University and Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, PR China
| | - Jian Luo
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China
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Zeng W, Chen Y, Zhang H, Peng L, Li Y, Liu B, Liang H, Du B, Li P. Probiotic-fermented Qushi decoction alleviates reserpine-induced spleen deficiency syndrome by regulating spleen function and gut microbiota dysbiosis. J Sci Food Agric 2023; 103:7702-7711. [PMID: 37439120 DOI: 10.1002/jsfa.12852] [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] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 07/03/2023] [Accepted: 07/13/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUND Spleen deficiency syndrome (SDS) is associated with elevated inflammatory factors and dysregulation of gastrointestinal motility hormones and intestinal microbiota. Qushi decoction (QD), a traditional formula, has not been reported using modern scientific research methods for changes in its probiotic fermented QD (FQD) composition and its potential mechanisms to alleviate SDS. Therefore, the aim of this study was to investigate the splenic protection of FQD in SDS rats by modulating gastrointestinal motility hormones and intestinal microbiota. RESULTS The results showed that FQD increased total polysaccharides, total protein, total flavonoids and the other active ingredients compared to QD, effectively improved splenic inflammation and apoptosis in SDS rats, and modulated gastrointestinal motility hormones to alleviate diarrhea and other symptoms. In addition, the dysregulation of the gut microbiota was reversed by increasing the levels of Bifidobacterium and decreasing the levels of Escherichia-Shigella and Proteobacteria, which may be related to the regulation of bacterial metabolites to alleviate SDS. CONCLUSION These results suggest that FQD is an effective formula for improving SDS. Our findings show that FQD beneficial to the implications for the treatment of SDS. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Wenshen Zeng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yang Chen
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Huan Zhang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Luwei Peng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yaqi Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Liu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Hongbo Liang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
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He Z, Lin J, Peng D, Zeng J, Pan X, Zheng R, Li P, Du B. Peptide fractions from Sacha inchi induced apoptosis in HepG2 cells via P53 activation and a mitochondria-mediated pathway. J Sci Food Agric 2023; 103:7621-7630. [PMID: 37495560 DOI: 10.1002/jsfa.12845] [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] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/04/2023] [Accepted: 07/27/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Sacha inchi is known for its high protein content and medicinal properties. Bioactive peptides have been reported to have therapeutic potential in various human diseases. However, there is a lack of research evaluating the pharmacological value of peptides derived from Sacha inchi. Therefore, this study aimed to investigate the anti-hepatoma effect of Sacha inchi peptides (SPs) and their underlying mechanism. RESULTS The study found that treatment with SPs significantly reduced the proliferation of HepG2 cells by inducing apoptosis and arresting the cell cycle at the G0/G1 phase. SPs also induced HepG2 cell apoptosis by increasing the levels of proteins such as Bax, Caspase-3 and P53. The study identified nine novel peptides in SPs, of which LLEPDVR, ALVEKAKAS and TGDGSLRPY exhibited higher cell proliferative inhibition rates compared to other peptides. CONCLUSION The findings of this study suggest that Sacha inchi peptides have potential pharmacological effects in the treatment of liver cancer. SPs effectively suppress the cell cycle and facilitate cell apoptosis, indicating their anti-hepatoma effect. The novel peptides identified in SPs may have therapeutic value for liver cancer treatment. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zhilin He
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jinming Lin
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Dong Peng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jieyu Zeng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xiangmin Pan
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Rui Zheng
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
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22
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Liu Z, Zhao Y, Song H, Miao H, Wang Y, Tu C, Fu T, Qin J, Du B, Qian M, Ren H. Identification and characterization of colorectal-cancer-associated SNPs on the SMAD7 locus. J Cancer Res Clin Oncol 2023; 149:16659-16668. [PMID: 37721570 DOI: 10.1007/s00432-023-05402-w] [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: 07/13/2023] [Accepted: 09/04/2023] [Indexed: 09/19/2023]
Abstract
PURPOSE Genome-wide association studies have identified SMAD7 as a colorectal cancer (CRC) susceptibility gene. However, its underlying mechanism has not yet been characterized. This study screened functional SNPs (fSNPs) related to colorectal cancer through Reel-seq and obtained regulatory proteins on functional SNPs. METHODS The candidate fSNPs on the SMAD7 locus were screened by Reel-seq method. Eight SNPs such as rs8085824 were identified as functional SNPs by luciferase reporter assay and EMSA, SDCP-MS and AIDP-WB revealed that HNRNPK can specifically bind to the rs8085824-C allele. The knockdown of HNRNPK by RNAi proved that HNRNPK could affect cell function by regulating SMAD7. RESULTS Eight functional SNPs was found on the SMAD7 locus in linkage disequilibrium (LD) with R2 > 0.8, i.e., rs12953717, rs7227023, rs34007497, rs58920878, rs8085824, rs4991143, rs4939826, and rs7227023. We also identified allele-imbalanced binding of HNRNPK to rs8085824, H1-3 to rs12953717, THOC6 to rs7227023, and DDX21 to rs58920878. Further functional analysis revealed that these proteins are the regulatory proteins that modulate the expression of SMAD7 in the human colorectal cancer cell line DLD1. In particular, we discovered that siRNA knockdown of HNRNPK inhibits cell proliferation and cell clonal formation by downregulating SMAD7, as the decreased cell proliferation and cell clonal formation in the siRNA HNRNPK knockdown cells was restored by SMAD7 overexpression. CONCLUSION Our findings reveal a mechanism which underlies the contribution of the fSNP rs8085824 on the SMD7 locus to CRC susceptibility.
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Affiliation(s)
- Zhao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yihan Zhao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Hongli Song
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Huaxue Miao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yingying Wang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Chuntian Tu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Tianyun Fu
- School of Mathematical Sciences, East China Normal University, Shanghai, 200241, China
| | - Juliang Qin
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
- Joint Center for Translational Medicine, Fengxian District Central Hospital, Fengxian District, Shanghai, 201499, China
| | - Bing Du
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Min Qian
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
| | - Hua Ren
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
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Sayed S, Shekh M, Song J, Sun Q, Dai H, Xue VW, Liu S, Du B, Zhou G, Stadler FJ, Zhu G, Lu D. ISX9 loaded thermoresponsive nanoparticles for hair follicle regrowth. Mater Today Bio 2023; 23:100849. [PMID: 38033366 PMCID: PMC10682119 DOI: 10.1016/j.mtbio.2023.100849] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023] Open
Abstract
There is a high demand for an optimal drug delivery system to treat androgenetic alopecia. Topical application of ISX9, which is a neurogenesis inducer, has been found to stimulate hair follicle (HF) regrowth by upregulating the Wnt/β-catenin signaling pathway, an essential pathway involved in initiating HF growth and development. In the present study, a temperature-sensitive, biopolymer-based, biocompatible, and eco-friendly drug-delivery system was synthesized. This system comprised chitosan-grafted poly(glycidyl methacrylate-co-N-isopropyl acrylamide) (Poly(GMA-co-NIPAAm)@CS-PGNCS) as the shell component and PF127 as the core polymer. The hydrophobic nature of the PF127 block copolymer efficiently dissolved the partially water-soluble drug, ISX9, and the thermos-responsive shell polymer effectively released the drug at a definite skin temperature. The optimized spherical nanoparticles demonstrated the lowest critical solution temperature (LCST) at 32 ± 2 °C with a diameter of 100-250 nm, which delivered encapsulated ISX9 with greater precision than topical ISX9. In a series of in vivo experiments, we demonstrated that ISX9-coated TBNPs upregulated the expression of β-catenin, active β-catenin, Wnt target genes, stemness marker genes, proliferating cell nuclear antigen, HF stem cell markers, and HF markers including VEGF, TGF, and IGF-1 more effectively than topical ISX9. These results suggest that TBNPs could be employed as a platform for effective transdermal delivery of various hydrophobic drugs.
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Affiliation(s)
- Sapna Sayed
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Mehdihasan Shekh
- New Energy Materials Laboratory, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Jiaxing Song
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
- Medical Scientific Research Center, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Qi Sun
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Han Dai
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Vivian Weiwen Xue
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Shanshan Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Bing Du
- New Energy Materials Laboratory, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Guangqian Zhou
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
| | - Florian J. Stadler
- New Energy Materials Laboratory, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Guangming Zhu
- New Energy Materials Laboratory, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Desheng Lu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Medical School, Shenzhen, China
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Du B, Zhang W, Shao X, An J, Ma H, Zhao X, Xu L, An D, Tian Y, Dong Y, Niu H. "Triple-low" radiation dose bronchial artery CT angiography before bronchial artery embolisation: a feasibility study. Clin Radiol 2023; 78:e1017-e1022. [PMID: 37813755 DOI: 10.1016/j.crad.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 09/01/2023] [Accepted: 09/12/2023] [Indexed: 10/11/2023]
Abstract
AIM To explore the feasibility of a "triple-low" dose (low tube voltage, low tube current, and low contrast agent volume) bronchial artery computed tomography (CT) angiography (CTA) to replace routine dose bronchial artery CTA before bronchial artery embolisation (BAE). MATERIALS AND METHODS CTA was obtained from 60 patients with body mass index (BMI) < 30 kg/m2 using a 256 multi-section iCT system, and they were divided into two groups: (1) group A: 100 kVp, 100 mAs, 50 ml contrast medium (CM); (2) group B: 120 kVp, automatic tube current modulation (ACTM), 80 ml CM. CT attenuation of the thoracic aorta, image noise, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated, and subjective image quality scores and traceability scores assessed. The effective radiation dose was calculated. RESULTS The radiation dose was reduced by 79.7% in group A compared to group B (p<0.05). The CT attenuation of the thoracic aorta was increased by approximately 13% in group A compared to group B (p<0.05). Higher image noise, lower SNR, and CNR were obtained in group A compared to group B (all p<0.05). Both subjective image quality scores and traceability scores did not differ between groups A and B (both p>0.05). CONCLUSION It is feasible to use the "triple-low" dose CTA protocol for patients with a body mass index (BMI) < 30 kg/m2. The radiation dose was reduced by 79.7%, and the dose of contrast medium was reduced by 37.5% to ensure the diagnostic value.
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Affiliation(s)
- B Du
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - W Zhang
- Chengde Medical University, Anyuan Road, Chengde, 067000, Hebei, China
| | - X Shao
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - J An
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - H Ma
- Chengde Medical University, Anyuan Road, Chengde, 067000, Hebei, China
| | - X Zhao
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - L Xu
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - D An
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - Y Tian
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - Y Dong
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - H Niu
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China.
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Cheng W, Chen J, Ma X, Sun J, Gao S, Wang Y, Su L, Wang L, Du W, He H, Chen Y, Li Z, Li Q, Sun J, Luo H, Liu J, Shan G, Du B, Guo Y, Liu D, Yin C, Zhou X. Association between ICU quality and in-hospital mortality of V-V ECMO-supported patients-the ECMO quality improvement action (EQIA) study: a national cohort study in China from 2017 to 2019. Front Med 2023:10.1007/s11684-023-1014-x. [PMID: 37991709 DOI: 10.1007/s11684-023-1014-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 06/24/2023] [Indexed: 11/23/2023]
Abstract
This cohort study was performed to explore the influence of intensive care unit (ICU) quality on in-hospital mortality of veno-venous (V-V) extracorporeal membrane oxygenation (ECMO)-supported patients in China. The study involved all V-V ECMO-supported patients in 318 of 1700 tertiary hospitals from 2017 to 2019, using data from the National Clinical Improvement System and China National Critical Care Quality Control Center. ICU quality was assessed by quality control indicators and capacity parameters. Among the 2563 V-V ECMO-supported patients in 318 hospitals, a significant correlation was found between ECMO-related complications and prognosis. The reintubation rate within 48 hours after extubation and the total ICU mortality rate were independent risk factors for higher in-hospital mortality of V-V ECMO-supported patients (cutoff: 1.5% and 7.0%; 95% confidence interval: 1.05-1.48 and 1.04-1.45; odds ratios: 1.25 and 1.23; P = 0.012 and P = 0.015, respectively). Meanwhile, the V-V ECMO center volume was a protective factor (cutoff of ≥ 50 cases within the 3-year study period; 95% confidence interval: 0.57-0.83, odds ratio: 0.69, P = 0.0001). The subgroup analysis of 864 patients in 11 high-volume centers further strengthened these findings. Thus, ICU quality may play an important role in improving the prognosis of V-V ECMO-supported patients.
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Affiliation(s)
- Wei Cheng
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Jieqing Chen
- Information Center Department/Department of Information Management, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xudong Ma
- Department of Medical Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China
| | - Jialu Sun
- National Institute of Hospital Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China
| | - Sifa Gao
- Department of Medical Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China
| | - Ye Wang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Longxiang Su
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Lu Wang
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Wei Du
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Huaiwu He
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Yujie Chen
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Zunzhu Li
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Qi Li
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Jianhua Sun
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Hongbo Luo
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Jinbang Liu
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Guangliang Shan
- Department of Epidemiology and Biostatistics, Institute of Basic Medicine Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College, Beijing, 100730, China
| | - Bing Du
- Department of Medical Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China
| | - Yanhong Guo
- Department of Medical Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China
| | - Dawei Liu
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China.
| | - Chang Yin
- National Institute of Hospital Administration, National Health Commission of the People's Republic of China, Beijing, 100044, China.
| | - Xiang Zhou
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China.
- Information Center Department/Department of Information Management, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, China.
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Wang W, Yan Y, Li Y, Huang Y, Zhang Y, Yang L, Xu X, Wu F, Du B, Mao Z, Shan T. Nutritional Value, Volatile Components, Functional Metabolites, and Antibacterial and Cytotoxic Activities of Different Parts of Millettia speciosa Champ., a Medicinal and Edible Plant with Potential for Development. Plants (Basel) 2023; 12:3900. [PMID: 38005797 PMCID: PMC10674594 DOI: 10.3390/plants12223900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/12/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Highly nutritious traditional plants which are rich in bioactive substances are attracting increasing attention. In this study, the nutritional value, chemical composition, biological activities, and feed indices of different parts of Millettia speciosa were comprehensively evaluated. In terms of its nutritional value, this study demonstrated that the leaves, flowers and seeds of M. speciosa were rich in elements and amino acids; the biological values (BVs) of these ingredients ranged from 85% to 100%, showing the extremely high nutritional value of this plant. GC-MS analysis suggested that the main chemical components of the flower volatile oil were n-hexadecanoic acid (21.73%), tetracosane (19.96%), and pentacosane (5.86%). The antibacterial activities of the flower and seed extracts were significantly stronger than those of the leaves and branches. The leaf extract displayed the strongest antifungal activities (EC50 values: 18.28 ± 0.54 μg/mL for Pseudocryphonectria elaeocarpicola and 568.21 ± 33.60 μg/mL for Colletotrichum gloeosporioides) and were the least toxic to mouse fibroblasts (L929) (IC50 value: 0.71 ± 0.04 mg/mL), while flowers were the most toxic (IC50 value: 0.27 ± 0.03 mg/mL). In addition, the abundance of fiber, protein, mineral elements, and functional metabolite contents indicated the potential applicability of M. speciosa as an animal feed. In conclusion, as a traditional herbal plant used for medicinal and food purposes, M. speciosa shows potential for safe and multifunctional development.
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Affiliation(s)
- Wei Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China;
| | - Yigang Yan
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
| | - Yitong Li
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
| | - Yinyin Huang
- Affiliated Stomatology Hospital, Guangzhou Medical University, Guangzhou 510182, China; (Y.H.); (L.Y.)
| | - Yirong Zhang
- College of Plant Protection, South China Agricultural University, Guangzhou 510642, China;
| | - Lan Yang
- Affiliated Stomatology Hospital, Guangzhou Medical University, Guangzhou 510182, China; (Y.H.); (L.Y.)
| | - Xiaoli Xu
- Instrumental Analysis and Research Center of SCAU, South China Agricultural University, Guangzhou 510642, China;
| | - Fengqi Wu
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou 510642, China;
| | - Ziling Mao
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
| | - Tijiang Shan
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; (W.W.); (Y.Y.); (Y.L.); (F.W.)
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Zhuang M, Chen H, Li Y, Mei S, Liu J, Du B, Wang X, Wang X, Tang J. Laparoscopic posterior pelvic exenteration is safe and feasible for locally advanced primary rectal cancer in female patients: a comparative study from China PelvEx collaborative. Tech Coloproctol 2023; 27:1109-1117. [PMID: 37243857 DOI: 10.1007/s10151-023-02824-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/08/2023] [Indexed: 05/29/2023]
Abstract
PURPOSE Posterior pelvic exenteration (PPE) for locally advanced rectal cancer is a technical and challenging procedure. The safety and feasibility of laparoscopic PPE remain to be determined. This study aims to compare short-term and survival outcomes of laparoscopic PPE (LPPE) with open PPE (OPPE) in female patients. METHOD From January 2015 to December 2020, data from 105 female patients who underwent PPE at three institutions were retrospectively analyzed. The short-term and oncological outcomes between LPPE and OPPE were compared. RESULTS A total of 54 cases with LPPE and 51 cases with OPPE were enrolled. The operative time (240 vs. 295 min, p = 0.009), blood loss (100 vs. 300 ml, p < 0.001), surgical site infection (SSI) rate (20.4% vs. 58.8%, p = 0.003), urinary retention rate (3.7% vs. 17.6%, p = 0.020), and postoperative hospital stay (10 vs. 13 days, p = 0.009) were significantly lower in the LPPE group. The two groups showed no significant differences in the local recurrence rate (p = 0.296), 3-year overall survival (p = 0.129), or 3-year disease-free survival (p = 0.082). A higher CEA level (HR 1.02, p = 0.002), poor tumor differentiation (HR 3.05, p = 0.004), and (y)pT4b stage (HR 2.35, p = 0.035) were independent risk factors for disease-free survival. CONCLUSION LPPE is safe and feasible for locally advanced rectal cancers and shows lower operative time and blood loss, fewer SSI complications, and better preservation of bladder function without compromising oncological outcomes.
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Affiliation(s)
- M Zhuang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - H Chen
- Department of General Surgery, Tianjin Fifth Central Hospital, Tianjin, 300450, China
| | - Y Li
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - S Mei
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - J Liu
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - B Du
- Department of Colorectal Surgery, Gansu Provincial Hospital, Lanzhou, 730000, China
| | - X Wang
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Xishan Wang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - J Tang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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28
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Du B, Zhou X, Li Q, Liu J, Liu Y, Zeng X, Cheng X, Hu H. Surface Treat Method to Improve the Adhesion between Stainless Steel and Resin: A Review. ACS Omega 2023; 8:39984-40004. [PMID: 37929129 PMCID: PMC10620901 DOI: 10.1021/acsomega.3c05728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/05/2023] [Indexed: 11/07/2023]
Abstract
Combining metal and polymer into hybrid composite materials is finding increasing interest in many industries. Special attention is being paid to increase the adhesion between the metal and polymer interface. In this paper, the current research progress of surface treatment methods for improving the interfacial adhesion of stainless steel and resin is reviewed. It involves the stainless steel surface treatment method, resin surface treatment method, and adhesion test methods of stainless steel and resin. The methods of improving the interfacial adhesion of stainless steel and resin are summarized and prospected according to the research status.
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Affiliation(s)
- Bing Du
- Chongqing
Key Laboratory of Nano−Micro Composite Materials and Devices,
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
- College
of Aerospace Engineering, Chongqing University, Chongqing 400030, China
| | - Xinyu Zhou
- Chongqing
Key Laboratory of Nano−Micro Composite Materials and Devices,
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Qichang Li
- Chongqing
Key Laboratory of Nano−Micro Composite Materials and Devices,
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Jingwei Liu
- Chongqing
Key Laboratory of Nano−Micro Composite Materials and Devices,
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Yuxi Liu
- School
of Smart Health, Chongqing College of Electronic
Engineering, Chongqing 401331, China
| | - Xianjun Zeng
- The
Green Aerotechnics Research Institute of CQJTU, Chongqing 401120, China
| | - Xiangrong Cheng
- Chongqing
Key Laboratory of Nano−Micro Composite Materials and Devices,
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Hanjie Hu
- School
of Aeronautics, Chongqing Jiaotong University, Chongqing 400074, China
- The
Green Aerotechnics Research Institute of CQJTU, Chongqing 401120, China
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29
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Liu J, Tian S, Ren J, Huang J, Luo L, Du B, Zhang T. Improved Interlaminar Properties of Glass Fiber/Epoxy Laminates by the Synergic Modification of Soft and Rigid Particles. Materials (Basel) 2023; 16:6611. [PMID: 37834749 PMCID: PMC10574751 DOI: 10.3390/ma16196611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/23/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023]
Abstract
Poor interlaminar fracture toughness has been a major issue in glass fiber-reinforced epoxy resin (GF/EP) laminate composites. In this paper, soft carboxy-terminated nitrile (CTBN) rubber particles and rigid nano-SiO2 are used to toughen the epoxy resin (EP) matrix to improve the interlayer properties of GF/EP laminate composites. The effects of adding two toughening agents on the mechanical and interlayer properties of GF/EP laminates were studied. The results showed that adding the two kinds of particles improved the mechanical properties of the epoxy matrix. When the additional amount of flexible CTBN rubber particles was 8 wt%, and the rigid nano-SiO2 was 0.5 wt%, the fracture toughness of the matrix resin was increased by 215.8%, and the tensile strength was only decreased by 2.3% compared with the pure epoxy resin. On this basis, the effects of two kinds of particles on the interlayer properties of GF/EP composites were studied. Compared with the unmodified GF/EP laminates, the interlayer shear strength and mode I interlayer fracture toughness is significantly improved by a toughening agent, and the energy release rate GIC of interlayer shear strength and interlayer fracture toughness is increased by 109.2%, and 86.8%, respectively. The flexible CTBN rubber particles and rigid nano-SiO2 improve the interfacial adhesion between GF and EP. The cavitation of the two particles and the plastic deformation of the matrix is the toughening mechanism of the interlayer properties of the composite. Such excellent interlaminar mechanical properties make it possible for GF/EP laminates to be widely used as engineering materials in various industries (e.g., aerospace, hydrogen energy, marine).
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Affiliation(s)
- Jingwei Liu
- Chongqing Key Laboratory of Nano-Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
- Department of Fine Chemicals and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
| | - Shenghui Tian
- Chongqing Key Laboratory of Nano-Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Jiaqi Ren
- Chongqing Key Laboratory of Nano-Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Jin Huang
- Chongqing Key Laboratory of Soft Matter Materials Chemistry and Functional Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Lin Luo
- Chongqing Key Laboratory of Nano-Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Bing Du
- Chongqing Key Laboratory of Nano-Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Tianyong Zhang
- Department of Fine Chemicals and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
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Jin S, Chen L, Zhu S, Du B, Liu T, Hou X. Joint Performance of a Continuous Glass Fiber/Polypropylene Composite. Polymers (Basel) 2023; 15:3942. [PMID: 37835990 PMCID: PMC10575055 DOI: 10.3390/polym15193942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Thermoplastic composite structures possess superior properties compared with thermosetting composites, including recyclability and high damage tolerance. However, the poor adhesion properties of thermoplastic composites make their joining process challenging. In this research, three bonding techniques, namely adhesive, mechanical joining, and hybrid bonding, are investigated using lap shear specimens to evaluate their mechanical properties and failure modes. The stress distributions at the joints of the three bonding techniques are analyzed by numerical simulation. The findings demonstrate that hybrid bonding enhances the strength of composite joints, albeit at the expense of some stiffness due to the presence of an open hole. This method is particularly suitable for applications that necessitate robust connections requiring high strength.
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Affiliation(s)
- Shuai Jin
- College of Aerospace Engineering, Chongqing University, Chongqing 400030, China (L.C.)
| | - Liming Chen
- College of Aerospace Engineering, Chongqing University, Chongqing 400030, China (L.C.)
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, China
| | - Shaowei Zhu
- College of Aerospace Engineering, Chongqing University, Chongqing 400030, China (L.C.)
| | - Bing Du
- School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Tao Liu
- College of Aerospace Engineering, Chongqing University, Chongqing 400030, China (L.C.)
| | - Xianbo Hou
- College of Aerospace Engineering, Chongqing University, Chongqing 400030, China (L.C.)
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Fan Z, Fu T, Li Z, Du B, Cui X, Zhang R, Feng Y, Zhao H, Xue G, Cui J, Yan C, Gan L, Feng J, Xu Z, Yu Z, Tian Z, Ding Z, Chen J, Chen Y, Yuan J. The role of integration host factor in biofilm and virulence of high-alcohol-producing Klebsiella pneumoniae. Microbiol Spectr 2023; 11:e0117023. [PMID: 37732783 PMCID: PMC10581059 DOI: 10.1128/spectrum.01170-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/28/2023] [Indexed: 09/22/2023] Open
Abstract
Klebsiella pneumoniae is a well-known human nosocomial pathogen with an arsenal of virulence factors, including capsular polysaccharides (CPS), fimbriae, flagella, and lipopolysaccharides (LPS). Our previous study found that alcohol acted as an essential virulence factor for high-alcohol-producing K. pneumoniae (HiAlc Kpn). Integration host factor (IHF) is a nucleoid-associated protein that functions as a global virulence regulator in Escherichia coli. However, the regulatory role of IHF in K. pneumoniae remains unknown. In the present study, we found that deletion of ihfA or ihfB resulted in a slight defect in bacterial growth, a severe absence of biofilm formation and cytotoxicity, and a significant reduction in alcohol production. RNA sequencing differential gene expression analysis showed that compared with the wild-type control, the expression of many virulence factor genes was downregulated in ΔihfA and ΔihfB strains, such as those related to CPS (rcsA, galF, wzi, and iscR), LPS (rfbABCD), type I and type III fimbriae (fim and mrk operon), cellulose (bcs operon), iron transporter (feoABC, fhuA, fhuF, tonB, exbB, and exbD), quorum sensing (lsr operon and sdiA), type II secretion system (T2SS) and type VI secretion system (T6SS) (tssG, hcp, and gspE). Of these virulence factors, CPS, LPS, fimbriae, and cellulose are involved in biofilm formation. In addition, IHF could affect the alcohol production by regulating genes related to glucose intake (ptsG), pyruvate formate-lyase, alcohol dehydrogenase, and the tricarboxylic acid (TCA) cycle. Our data provided new insights into the importance of IHF in regulating the virulence of HiAlc Kpn. IMPORTANCE Klebsiella pneumoniae is a well-known human nosocomial pathogen that causes various infectious diseases, including urinary tract infections, hospital-acquired pneumonia, bacteremia, and liver abscesses. Our previous studies demonstrated that HiAlc Kpn mediated the development of nonalcoholic fatty liver disease by producing excess endogenous alcohol in vivo. However, the regulators regulating the expression of genes related to metabolism, biofilm formation, and virulence of HiAlc Kpn remain unclear. In this study, the regulator IHF was found to positively regulate biofilm formation and many virulence factors including CPS, LPS, type I and type III fimbriae, cellulose, iron transporter, AI-2 quorum sensing, T2SS, and T6SS in HiAlc Kpn. Furthermore, IHF positively regulated alcohol production in HiAlc Kpn. Our results suggested that IHF could be a potential drug target for treating various infectious diseases caused by K. pneumoniae. Hence, the regulation of different virulence factors by IHF in K. pneumoniae requires further investigation.
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Affiliation(s)
- Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zhoufei Li
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
- Graduate School of Peking Union Medical College, Beijing, China
| | - Bing Du
- University of Edinburgh, Edinburgh, United Kingdom
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
- Graduate School of Peking Union Medical College, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zanbo Ding
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinfeng Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yujie Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
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Zhang N, Liu X, Qin J, Sun Y, Xiong H, Lin B, Liu K, Tan B, Zhang C, Huang C, Ren S, Liu M, Du B. LIGHT/TNFSF14 promotes CAR-T cell trafficking and cytotoxicity through reversing immunosuppressive tumor microenvironment. Mol Ther 2023; 31:2575-2590. [PMID: 37408308 PMCID: PMC10491984 DOI: 10.1016/j.ymthe.2023.06.015] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 03/30/2023] [Accepted: 06/28/2023] [Indexed: 07/07/2023] Open
Abstract
Tertiary lymphoid structures (TLSs) in tumor tissues facilitate immune cell trafficking and cytotoxicity, which benefits survival and favorable responses in immune therapy. Here, we observed a high correlation of tumor necrosis factor superfamily member 14 (LIGHT) expression with TLS signature genes, which are all markers for immune cell accumulation and better prognosis, through retrieving RNA sequencing (RNA-seq) data from patients with cancer, suggesting the potential of LIGHT in reconstituting a high immune-infiltrated tumor microenvironment. Accordingly, LIGHT co-expressed chimeric antigen receptor T (LIGHT CAR-T) cells not only showed enhanced cytotoxicity and cytokine production but also improved CCL19 and CCL21 expression by surrounding cells. And the supernatant of LIGHT CAR-T cells promoted T cell migration in a paracrine manner. Furthermore, LIGHT CAR-T cells showed superior anti-tumor efficacy and improved infiltration in comparison with conventional CAR-T cells in immunodeficient NSG mice. Accordingly, murine LIGHT-OT-1 T cells normalized tumor blood vessels and enforced intratumoral lymphoid structures in C57BL/6 syngeneic tumor mouse models, implying the potential of LIGHT CAR-T in clinical application. Taken together, our data revealed a straightforward strategy to optimize trafficking and cytotoxicity of CAR-T cells by redirecting TLSs through LIGHT expression, which has great potential to expand and optimize the application of CAR-T therapy in solid tumors.
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Affiliation(s)
- Na Zhang
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China; BRL Medicine, Inc, Shanghai 201109, China
| | - Xiaohong Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Juliang Qin
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yue Sun
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Hao Xiong
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Boxu Lin
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kexin Liu
- BRL Medicine, Inc, Shanghai 201109, China
| | - Binghe Tan
- BRL Medicine, Inc, Shanghai 201109, China
| | - Chenglin Zhang
- Department of Orthopedics, Shanghai Changzheng Hospital, Shanghai 200003, China
| | - Chenshen Huang
- Department of Gastrointestinal Surgery, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou 350001, China
| | - Shancheng Ren
- Department of Urology, Shanghai Changzheng Hospital, Shanghai 200003, China.
| | - Mingyao Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China.
| | - Bing Du
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China.
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Du B, Su Y, Ma T, Ji S, Lu Y, Zhang K, Li Z, Li M. Efficacy comparison of Kirschner-wire tension band and anchor loop plate in treatment of olecranon fracture. Front Bioeng Biotechnol 2023; 11:1203244. [PMID: 37724095 PMCID: PMC10505394 DOI: 10.3389/fbioe.2023.1203244] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 08/21/2023] [Indexed: 09/20/2023] Open
Abstract
Objective: This study aimed to introduce a new surgical method for the fixation of olecranon fractures, and to compare the biomechanical stability and clinical efficacy of Kirschner wire tension band and anchor loop plate (ALP) in the treatment of olecranon fractures. Methods: A finite element model was established to analyze the mechanical properties of Kirschner wire tension and anchor loop plate fixation for olecranon fracture. The clinical data of 53 patients with olecranon fractures admitted to our hospital from March 2016 to October 2021 were retrospectively analyzed. Among them, 22 cases were fixed with an anchor loop plate (ALP group), and 31 patients were fixed with the Kirschner wire tension band technique. By reviewing the medical records and follow-up results, the final elbow mobility, secondary surgery, postoperative complications and elbow function recovery Mayo score and DASH score were compared between the two groups. Results: The biomechanical analysis of the finite element model showed that under the load of 120 N, the maximum displacement of the Kirschner wire group was 1.09 times that of the ALP group, the maximum stress of the Kirschner wire group was 1.33 times that of the ALP group, and the maximum stress of the olecranon proximal bone of the Kirschner wire group was 2.17 times that of the ALP group. Under the load of 200 N, the maximum displacement of the Kirschner wire group was 1.19 times that of the ALP group. The overall maximum stress of the Kirschner wire group was 1.59 times that of the ALP group, and the maximum stress of the proximal olecranon bone of the Kirschner wire group was 1.99 times that of the ALP group. The average follow-up time of the Kirschner wire and anchor loop plate groups was similar (p > 0.05). The average age of the two groups was identical (p > 0.05). The final elbow mobility in the anchor loop plate group was significantly greater than in the Kirschner wire group (p < 0.05). The Mayo score of the anchor loop plate group was substantially higher than that of the Kirschner wire group at 3 and 12 months after operation (p < 0.05), and the DASH score was significantly lower than that of the Kirschner wire group (p < 0.05). Postoperative complications in the two groups: 1 case (4.5%) in the anchor loop plate group had difficulties with internal fixation stimulation, and no infection occurred; in the Kirschner wire group, 5 cases (16.1%) had complications of internal fixation stimulation, and 1 patient (3.2%) had an infection. Conclusion: The model of olecranon fracture fixed by anchor loop plate and Kirschner wire tension technique was tested under 120 and 200 N tension, and no damage was found, indicating that the newly designed anchor loop plate was safe in mechanical structure. The biomechanical stability of the anchor plate technique is more stable, so it is not easy to have postoperative complications such as fracture block cutting and internal fixation failure. And the secondary operation rate and elbow function have better results. This technique is an effective method for the treatment of olecranon fractures.
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Affiliation(s)
| | | | | | | | | | | | - Zhong Li
- Xi’an Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Ming Li
- Xi’an Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
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Cui X, Du B, Feng J, Feng Y, Fan Z, Chen J, Cui J, Gan L, Fu T, Tian Z, Zhang R, Yan C, Zhao H, Xu W, Xu Z, Yu Z, Ding Z, Li Z, Chen Y, Xue G, Yuan J. A novel phage carrying capsule depolymerase effectively relieves pneumonia caused by multidrug-resistant Klebsiella aerogenes. J Biomed Sci 2023; 30:75. [PMID: 37653407 PMCID: PMC10470133 DOI: 10.1186/s12929-023-00946-y] [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: 05/22/2023] [Accepted: 06/30/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Klebsiella aerogenes can cause ventilator-associated pneumonia by forming biofilms, and it is frequently associated with multidrug resistance. Phages are good antibiotic alternatives with unique advantages. There has been a lack of phage therapeutic explorations, kinetic studies, and interaction mechanism research targeting K. aerogenes. METHODS Plaque assay, transmission electron microscopy and whole-genome sequencing were used to determine the biology, morphology, and genomic characteristics of the phage. A mouse pneumonia model was constructed by intratracheal/endobronchial delivery of K. aerogenes to assess the therapeutic effect of phage in vivo. Bioinformatics analysis and a prokaryotic protein expression system were used to predict and identify a novel capsule depolymerase. Confocal laser scanning microscopy, Galleria mellonella larvae infection models and other experiments were performed to clarify the function of the capsule depolymerase. RESULTS A novel lytic phage (pK4-26) was isolated from hospital sewage. It was typical of the Podoviridae family and exhibited serotype specificity, high lytic activity, and high environmental adaptability. The whole genome is 40,234 bp in length and contains 49 coding domain sequences. Genomic data show that the phage does not carry antibiotic resistance, virulence, or lysogenic genes. The phage effectively lysed K. aerogenes in vivo, reducing mortality and alleviating pneumonia without promoting obvious side effects. A novel phage-derived depolymerase was predicted and proven to be able to digest the capsule, remove biofilms, reduce bacterial virulence, and sensitize the bacteria to serum killing. CONCLUSIONS The phage pK4-26 is a good antibiotic alternative and can effectively relieve pneumonia caused by multidrug-resistant K. aerogenes. It carries a depolymerase that removes biofilms, reduces virulence, and improves intrinsic immune sensitivity.
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Affiliation(s)
- Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Bing Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
- School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jinfeng Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Wenjian Xu
- Department of Clinical Laboratory, Children's Hospital Affiliated to Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Zanbo Ding
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Zhoufei Li
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Yujie Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China.
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, 100020, China.
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Abstract
Type 1 diabetes (T1D) is usually caused by immune-mediated destruction of islet β cells, and genetic and environmental factors are thought to trigger autoimmunity. Convincing evidence indicates that viruses are associated with T1D development and progression. During the COVID-19 pandemic, cases of hyperglycemia, diabetic ketoacidosis, and new diabetes increased, suggesting that SARS-CoV-2 may be a trigger for or unmask T1D. Possible mechanisms of β-cell damage include virus-triggered cell death, immune-mediated loss of pancreatic β cells, and damage to β cells because of infection of surrounding cells. This article examines the potential pathways by which SARS-CoV-2 affects islet β cells in these 3 aspects. Specifically, we emphasize that T1D can be triggered by SARS-CoV-2 through several autoimmune mechanisms, including epitope spread, molecular mimicry, and bystander activation. Given that the development of T1D is often a chronic, long-term process, it is difficult to currently draw firm conclusions as to whether SARS-CoV-2 causes T1D. This area needs to be focused on in terms of the long-term outcomes. More in-depth and comprehensive studies with larger cohorts of patients and long-term clinical follow-ups are required.
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Affiliation(s)
- Yichen Wang
- Department of Endocrinology, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hui Guo
- Department of Endocrinology, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Gongquan Wang
- Department of Cardiology, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jiawei Zhai
- Department of Cardiology, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Bing Du
- Department of Cardiology, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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Feng J, Cui X, Du B, Zhao H, Feng Y, Cui J, Yan C, Gan L, Fan Z, Fu T, Xu Z, Yu Z, Zhang R, Du S, Tian Z, Zhang Q, Xue G, Yuan J. Detection and Quantification of Klebsiella pneumoniae in Fecal Samples Using Digital Droplet PCR in Comparison with Real-Time PCR. Microbiol Spectr 2023; 11:e0424922. [PMID: 37306605 PMCID: PMC10433836 DOI: 10.1128/spectrum.04249-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 05/18/2023] [Indexed: 06/13/2023] Open
Abstract
This study aimed to develop a rapid and sensitive droplet digital PCR (ddPCR) assay for the specific detection of Klebsiella pneumoniae in fecal samples, and to evaluate its application in the clinic by comparison with real-time PCR assay and conventional microbial culture. Specific primers and a probe targeting the K. pneumoniae hemolysin (khe) gene were designed. Thirteen other pathogens were used to evaluate the specificity of the primers and probe. A recombinant plasmid containing the khe gene was constructed and used to assess the sensitivity, repeatability, and reproducibility of the ddPCR. Clinical fecal samples (n = 103) were collected and tested by the ddPCR, real-time PCR, and conventional microbial culture methods. The detection limit of ddPCR for K. pneumoniae was 1.1 copies/μL, about a 10-fold increase in sensitivity compared with real-time PCR. The ddPCR was negative for the 13 pathogens other than K. pneumoniae, confirming its high specificity. Clinical fecal samples gave a higher rate of positivity in the K. pneumoniae ddPCR assay than in analysis by real-time PCR or conventional culture. ddPCR also showed less inhibition by the inhibitor in fecal sample than real-time PCR. Thus, we established a sensitive and effective ddPCR-based assay method for K. pneumoniae. It could be a useful tool for K. pneumoniae detection in feces and may serve as a reliable method to identify causal pathogens and help guide treatment decisions. IMPORTANCE Klebsiella pneumoniae can cause a range of illnesses and has a high colonization rate in the human gut, making it crucial to develop an efficient method for detecting K. pneumoniae in fecal samples.
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Affiliation(s)
- Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Bing Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
- School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Shuheng Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Qun Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
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Fan Z, Fu T, Liu H, Li Z, Du B, Cui X, Zhang R, Feng Y, Zhao H, Xue G, Cui J, Yan C, Gan L, Feng J, Xu Z, Yu Z, Tian Z, Ding Z, Chen J, Chen Y, Yuan J. Glucose Induces Resistance to Polymyxins in High-Alcohol-Producing Klebsiella pneumoniae via Increasing Capsular Polysaccharide and Maintaining Intracellular ATP. Microbiol Spectr 2023; 11:e0003123. [PMID: 37338347 PMCID: PMC10434286 DOI: 10.1128/spectrum.00031-23] [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: 01/10/2023] [Accepted: 05/31/2023] [Indexed: 06/21/2023] Open
Abstract
High-alcohol-producing K. pneumoniae (HiAlc Kpn) causes nonalcoholic fatty liver disease (NAFLD) by producing excess endogenous alcohol in the gut of patients with NAFLD, using glucose as the main carbon source. The role of glucose in the response of HiAlc Kpn to environmental stresses such as antibiotics remains unclear. In this study, we found that glucose could enhance the resistance of HiAlc Kpn to polymyxins. First, glucose inhibited the expression of crp in HiAlc Kpn and promoted the increase of capsular polysaccharide (CPS), which promoted the drug resistance of HiAlc Kpn. Second, glucose maintained high ATP levels in HiAlc Kpn cells under the pressure of polymyxins, enhancing the resistance of the cells to the killing effect of antibiotics. Notably, the inhibition of CPS formation and the decrease of intracellular ATP levels could both effectively reverse glucose-induced polymyxins resistance. Our work demonstrated the mechanism by which glucose induces polymyxins resistance in HiAlc Kpn, thereby laying the foundation for developing effective treatments for NAFLD caused by HiAlc Kpn. IMPORTANCE HiAlc Kpn can use glucose to produce excess endogenous alcohol for promoting the development of NAFLD. Polymyxins are the last line of antibiotics and are commonly used to treat infections caused by carbapenem-resistant K. pneumoniae. In this study, we found that glucose increased bacterial resistance to polymyxins via increasing CPS and maintaining intracellular ATP; this increases the risk of failure to treat NAFLD caused by multidrug-resistant HiAlc Kpn infection. Further research revealed the important roles of glucose and the global regulator, CRP, in bacterial resistance and found that inhibiting CPS formation and decreasing intracellular ATP levels could effectively reverse glucose-induced polymyxins resistance. Our work reveals that glucose and the regulatory factor CRP can affect the resistance of bacteria to polymyxins, laying a foundation for the treatment of infections caused by multidrug-resistant bacteria.
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Affiliation(s)
- Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Hongbo Liu
- School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Zhoufei Li
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Bing Du
- University of Edinburgh, Edinburgh, United Kingdom
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zanbo Ding
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinfeng Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yujie Chen
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
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Xie H, Du B, Huang X, Zeng D, Meng H, Lin H, Li W, Asefa T, Meng Y. High Density Single Fe Atoms on Mesoporous N-Doped Carbons: Noble Metal-Free Electrocatalysts for Oxygen Reduction Reaction in Acidic and Alkaline Media. Small 2023; 19:e2303214. [PMID: 37170674 DOI: 10.1002/smll.202303214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 04/24/2023] [Indexed: 05/13/2023]
Abstract
It remains a challenge to develop efficient noble metal-free electrocatalysts for the oxygen reduction reaction (ORR) in various renewable energy systems. Single atom catalysts have recently drawn great attention as promising candidates both due to their high activity and their utmost atom utilization for electrocatalytic ORR. Herein, the synthesis of an efficient ORR electrocatalyst that is composed of N-doped mesoporous carbon and a high density (4.05 wt%) of single Fe atoms via pyrolysis Fe-conjugated polymer is reported. Benefiting from the abundant atomic Fe-N4 sites on its conductive, mesoporous carbon structures, this material exhibits an excellent electrocatalytic activity for ORR, with positive onset potentials of 0.93 and 0.98 V in acidic and alkaline media, respectively. Its electrocatalytic performance for ORR is also comparable to that of Pt/C (20 wt%) in both media. Furthermore, it electrocatalyzes the reaction almost fully to H2 O (or barely to H2 O2 ). Additionally, it is durable and tolerates the methanol crossover reaction well. Furthermore, a proton exchange membrane fuel cell and a zinc-air battery assembled using it on their cathode deliver high maximum power densities (320 and 91 mW cm-2 , respectively). Density functional theory calculation reveals that the material's decent electrocatalytic performance for ORR is due to its atomically dispersed Fe-N4 sites.
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Affiliation(s)
- Haifang Xie
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Bing Du
- College of Materials Science and Engineering, Shenzhen University, 1066 Xueyuan Avenue, Shenzhen, 518060, China
| | - Xiaoxi Huang
- Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen, 518055, China
| | - Dahai Zeng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Hui Meng
- College of Science and Engineering, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Huaijun Lin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Wei Li
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Tewodros Asefa
- Department of Chemistry and Chemical Biology & Department of Chemical and Biochemical Engineering, Rutgers, 610 Taylor Road, The State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Yuying Meng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
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Yao Z, Guo J, Du B, Hong L, Zhu Y, Feng X, Hou Y, Shi A. Effects of Shenling Baizhu powder on intestinal microflora metabolites and liver mitochondrial energy metabolism in nonalcoholic fatty liver mice. Front Microbiol 2023; 14:1147067. [PMID: 37538846 PMCID: PMC10394096 DOI: 10.3389/fmicb.2023.1147067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023] Open
Abstract
Background & purpose Non-alcoholic fatty liver disease (NAFLD) is characterised by the excessive accumulation of triglycerides in the liver. Shenling Baizhu powder (SLBZP) is formulated from various natural medicinal plants that protect the liver and are used to treat intestinal diseases. SLBZP improves the symptoms of NAFLD. However, its mechanism of action remains unclear. Herein, we investigated the ameliorative effect of SLBZP on model mice with high-fat-diet (HFD)-induced NAFLD. Additionally, we evaluated the impact of SLBZP on the intestinal flora and its metabolites and mitochondrial energy metabolism in NAFLD. Methods We used HFD to establish a mouse model of NAFLD. Different drug interventions were administered. We measured serum biochemical indices. Liver sections were visualised with hematoxylin-eosin and oil red O staining. 16S rDNA amplicon sequencing technology was used to analyse the diversity and abundance of the intestinal flora. Short-chain fatty acids (SCFAs) in the intestinal contents were detected using GC-MS. Liver tissue was sampled to detect mitochondrial membrane functional indices. Western blotting was used to determine the levels of mitochondrial pathway-related proteins, namely, uncoupling protein 2 (UCP2), adenosine monophosphate-activated protein kinase (AMPK) and inhibitory factor 1 (IF1) of F1Fo ATP synthesis/hydrolase, in the liver. Results The spleen-invigorating classic recipe of SLBZP reduced liver lipid deposition in mice with HFD-induced NAFLD. Additionally, SCFAs produced by intestinal flora metabolism regulated the UCP2/AMPK/IF1 signalling pathway involved in liver mitochondrial energy metabolism to improve the liver mitochondrial membrane permeability, respiratory state and oxidative phosphorylation efficiency of mice with NAFLD. Finally, SLBZP increased the liver ATP level. Conclusion Our results suggest that the therapeutic effect of SLBZP on NAFLD is related to the regulation of hepatic mitochondrial energy metabolism by intestinal flora and its metabolites and is possibly associated with the UCP2/AMPK/IF1 signalling pathway.
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Affiliation(s)
- Zheng Yao
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
- The Key Laboratory of Microcosmic Syndrome Differentiation, Education Department of Yunnan, Yunnan University of Chinese Medicine, Kunming, China
- Yunnan Key Laboratory of Integrated Traditional Chinese and Western Medicine for Chronic Disease in Prevention and Treatment, Kunming, China
| | - Jia Guo
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
- Dongtai City Hospital of Traditional Chinese Medicine, Dongtai, China
| | - Bing Du
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
- Heilongjiang Provincial Hospital of Traditional Chinese Medicine, Harbin, China
| | - Li Hong
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
- Wuhan Special Service Recuperation Center, Wuhan, China
| | - Ying Zhu
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
| | - Xiaoyi Feng
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
| | - Yuanlu Hou
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
| | - Anhua Shi
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming, China
- The Key Laboratory of Microcosmic Syndrome Differentiation, Education Department of Yunnan, Yunnan University of Chinese Medicine, Kunming, China
- Yunnan Key Laboratory of Integrated Traditional Chinese and Western Medicine for Chronic Disease in Prevention and Treatment, Kunming, China
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Xu X, Zhao L, Zhu Y, Du B, Zhu B, Zhang H, Han L, Liu X. Conducting quantitative mask fit tests: application details and affecting factors. Front Public Health 2023; 11:1218191. [PMID: 37521986 PMCID: PMC10372483 DOI: 10.3389/fpubh.2023.1218191] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/29/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Respirators chosen based on their assigned protection factor (APF) enable wearers to effectively reduce particulate matter concentrations to safe levels when used correctly. As a crucial factor in achieving the intended APF, the fit test has become a necessary procedure in respiratory disease protection. Methods This study involved 225 participants who underwent a fit test using two reusable types of half masks and two types of full masks. Condensation nuclei counting (CNC) and controlled negative pressure (CNP) were performed. Results The results revealed that the passing rate of full masks was higher compared to half masks. Specifically, the passing rate for the half masks and the full masks were 84.7 and 91.6%, respectively. Gender exerted a statistically significant effect on the passing rate. Nevertheless, age, educational background, and training exhibited relatively negligible effects. Certain movements, such as facing forward, were identified as key actions with strong correlation. Additionally, talking was considered a key action with a high failure rate due to instantaneous leakages. Most participants failed at the initial step of CNP, but nearly all of them passed the fit test using CNC. Discussion Therefore, putting on full masks, especially for women, provides optimal protection during work. Furthermore, attention should be given to the displacement and deformation of the respirator during the key actions. When it comes to fit test methods, CNC was found to be more practical and comprehensive compared to CNP. Moreover, additional physiological characteristics, such as double chins, could be explored as potential influential factors.
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Affiliation(s)
- Xiaodan Xu
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
| | - Liangliang Zhao
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
| | - Yong Zhu
- Pudong New Area Center for Disease Control and Prevention, Shanghai, China
| | - Bing Du
- BASF-YPC Company Limited, Nanjing, China
| | - Baoli Zhu
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
| | - Hengdong Zhang
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
| | - Lei Han
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
| | - Xin Liu
- Jiangsu Provincial Center for Disease Control and Prevention, Institute of Occupational Disease Prevention, Nanjing, China
- Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
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Zeng J, An M, Tian W, Wang K, Du B, Li P. Sacha inchi albumin delays skin-aging by alleviating inflammation, oxidative stress and regulating gut microbiota in d-galactose induced-aging mice. J Sci Food Agric 2023; 103:4470-4480. [PMID: 36919865 DOI: 10.1002/jsfa.12555] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 02/02/2023] [Accepted: 03/15/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND Sacha inchi albumin exhibits considerable functional activity with notable anti-inflammatory and antioxidation properties, which could delay skin aging. However, its underlying mechanisms for delaying skin aging have not been elucidated. The aim of the present study was to investigate the anti-skin-aging effect of sacha inchi albumin (SIA) in d-galactose induced-aging mice. RESULTS Sacha inchi albumin improved moisture content, collagen level, and the state of aged skin in rats. Sacha inchi albumin intervention markedly increased the skin antioxidant enzymatic activities including those of glutathione peroxidase, and catalase, but decreased the malondialdehyde content. It also regulated inflammation by reducing the level of tumor necrosis factor-α (TNF-α) and increasing the level of interleukin-6 (IL-6). Administration of SIA also increased the expression level of collagen I and III, increased the expression of tissue inhibitor of metalloprotease-1, and decreased the expression of metalloproteinases. Sacha inchi albumin can also activate the transforming growth factor-β (TGF-β)/Smad pathway. Meanwhile, 16S rRNA sequencing analysis revealed that SIA treatment altered the composition of microbiota, and increased the relative abundance of Lactobacillus, but decreased the relative abundance of Alloprevotella and Helicobacter, etc. Helicobacter was positively associated with malondialdehyde (MDA) content and was negatively related to IL-6. CONCLUSION Sacha inchi albumin exhibits excellent anti-skin-aging effect, which provide a new insight for the development of functional sacha inchi albumin. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Jieyu Zeng
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
| | - Miaoqing An
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
| | - Wenni Tian
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
| | - Kun Wang
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, 510640, China
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Zhao H, Yan C, Feng Y, Du B, Feng J, Cui X, Cui J, Gan L, Fan Z, Xu Z, Fu T, Yu Z, Yuan J, Xue G. Absolute quantification of Mycoplasma pneumoniae in infected patients by droplet digital PCR to track disease severity and treatment efficacy. Front Microbiol 2023; 14:1177273. [PMID: 37426001 PMCID: PMC10324665 DOI: 10.3389/fmicb.2023.1177273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/08/2023] [Indexed: 07/11/2023] Open
Abstract
Mycoplasma pneumoniae is a common causative pathogen of community-acquired pneumonia. An accurate and sensitive detection method is important for evaluating disease severity and treatment efficacy. Digital droplet PCR (ddPCR) is a competent method enabling the absolute quantification of DNA copy number with high precision and sensitivity. We established ddPCR for M. pneumoniae detection, using clinical specimens for validation, and this showed excellent specificity for M. pneumoniae. The limit of detection of ddPCR was 2.9 copies/reaction, while that for real-time PCR was 10.8 copies/reaction. In total, 178 clinical samples were used to evaluate the ddPCR assay, which correctly identified and differentiated 80 positive samples, whereas the real-time PCR tested 79 samples as positive. One sample that tested negative in real-time PCR was positive in ddPCR, with a bacterial load of three copies/test. For samples that tested positive in both methods, the cycle threshold of real-time PCR was highly correlated with the copy number of ddPCR. Bacterial loads in patients with severe M. pneumoniae pneumonia were significantly higher than those in patients with general M. pneumoniae pneumonia. The ddPCR showed that bacterial loads were significantly decreased after macrolide treatment, which could have reflected the treatment efficacy. The proposed ddPCR assay was sensitive and specific for the detection of M. pneumoniae. Quantitative monitoring of bacterial load in clinical samples could help clinicians to evaluate treatment efficacy.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Jing Yuan
- *Correspondence: Jing Yuan, ; Guanhua Xue,
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Zhang R, Xu Z, Xue G, Feng J, Du B, Gan L, Fan Z, Fu T, Feng Y, Zhao H, Cui J, Yan C, Cui X, Tian Z, Chen J, Yu Z, Yuan J. Combined Methylation and Transcriptome Analysis of Liver Injury of Nonalcoholic Fatty Liver Disease Induced by High Alcohol-Producing Klebsiella pneumoniae. Microbiol Spectr 2023; 11:e0532322. [PMID: 37022192 PMCID: PMC10269619 DOI: 10.1128/spectrum.05323-22] [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: 12/28/2022] [Accepted: 03/13/2023] [Indexed: 04/07/2023] Open
Abstract
It has been known that high alcohol-producing Klebsiella pneumoniae (HiAlc Kpn) is one of causative agents of nonalcoholic fatty liver disease (NAFLD). However, how HiAlc Kpn promotes liver injury remains unclear. Recent findings suggest that DNA methylation might associate with the pathogenesis of NAFLD. Herein, the role of DNA methylation in HiAlc Kpn-induced liver injury was investigated. Murine models of NAFLD were established in C57BL/6N wild-type mice by gavaging HiAlc Kpn for 8 weeks. The liver injury was assessed based on the liver histopathology and biochemical indicators. In addition, DNA methylation in hepatic tissue was assessed by using dot bolt of 5-mC. RNA sequencing analysis and whole-genome bisulfite sequencing (WGBS) analysis were also performed. HiAlc Kpn significantly increased the activity of aspartate transaminase (AST), alanine transaminase (ALT), triglycerides (TGs), and glutathione (GSH), while hypomethylation was associated with liver injury in the experimental mice induced by HiAlc Kpn. The GO and KEGG pathway enrichment analysis of the transcriptome revealed that HiAlc Kpn induced fat metabolic disorders and DNA damage. The conjoint analysis of methylome and transcriptome showed that hypomethylation regulated related gene expression in signal pathways of lipid formation and circadian rhythm, including Rorα and Arntl1genes, which may be the dominant cause of NAFLD induced by HiAlc Kpn. Data suggest that DNA hypomethylation might play an important role in liver injury of NAFLD induced by HiAlc Kpn. Which possibly provides a new sight for understanding the mechanisms of NAFLD and selecting the potential therapeutic targets. IMPORTANCE High alcohol-producing Klebsiella pneumoniae (HiAlc Kpn) is one of causative agents of nonalcoholic fatty liver disease (NAFLD) and could induce liver damage. DNA methylation, as a common epigenetic form following contact with an etiologic agent and pathogenesis, can affect chromosome stability and transcription. We conjointly analyzed DNA methylation and transcriptome levels in the established murine models to explore the potential mechanisms for further understanding the role of DNA methylation in the liver damage of HiAlc Kpn-induced NAFLD. The analysis of the DNA methylation landscape contributes to our understanding of the entire disease process, which might be crucial in developing treatment strategies.
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Affiliation(s)
- Rui Zhang
- Capital Institute of Pediatrics, Beijing, China
- Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ziying Xu
- Capital Institute of Pediatrics, Beijing, China
| | - Guanhua Xue
- Capital Institute of Pediatrics, Beijing, China
- Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Junxia Feng
- Capital Institute of Pediatrics, Beijing, China
| | - Bing Du
- Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Capital Institute of Pediatrics, Beijing, China
| | - Zheng Fan
- Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Capital Institute of Pediatrics, Beijing, China
| | | | | | - Jinghua Cui
- Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Capital Institute of Pediatrics, Beijing, China
| | - Xiaohu Cui
- Capital Institute of Pediatrics, Beijing, China
| | - Ziyan Tian
- Capital Institute of Pediatrics, Beijing, China
| | | | - Zihui Yu
- Capital Institute of Pediatrics, Beijing, China
| | - Jing Yuan
- Capital Institute of Pediatrics, Beijing, China
- Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Du B, Su Y, Li D, Ji S, Lu Y, Xu Y, Yang Y, Zhang K, Li Z, Ma T. Analysis of risk factors for serous exudation of biodegradable material calcium sulfate in the treatment of fracture-related infections. Front Bioeng Biotechnol 2023; 11:1189085. [PMID: 37346793 PMCID: PMC10279841 DOI: 10.3389/fbioe.2023.1189085] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/18/2023] [Accepted: 05/24/2023] [Indexed: 06/23/2023] Open
Abstract
Objective: To explore the related risk factors of serous exudation after antibiotic-loaded calcium sulfate treatment of fracture-related infections and to provide a theoretical basis for clinical treatment and prevention of serous exudation complications. Methods: The clinical data of 145 patients with limb fracture-related infection treated with antibiotic-loaded calcium sulfate in Xi'an Honghui Hospital from January 2019 to December 2022 were retrospectively analyzed. All patients were diagnosed with fracture-related infection by preoperative magnetic resonance examination, bacterial culture and gene detection and received antibiotic-loaded calcium sulfate implantation. The postoperative serous exudation was recorded through hospitalization observation, outpatient review or follow-up. The collected clinical data were sorted out, and the patient data were divided into serous exudation groups and non-exudation groups. Firstly, the clinical data of the two groups were compared by single-factor analysis to screen out the risk factors. Then multivariate binary Logistic regression analysis determined the independent risk factors and protective factors. Results: 1) According to the inclusion and exclusion criteria, there were 145 cases with complete clinical data, including 27 cases in the non-infectious exudation group and 118 cases in the non-exudative group; 2) Univariate analysis showed that the history of diabetes, smoking history, calcium sulfate implantation, drainage time, combined flap surgery, geometric shape of implanted calcium sulfate, and thickness of soft tissue covered by the surgical area were all associated with the occurrence of non-infectious exudation after antibiotic-loaded calcium sulfate implantation (p < 0.05); 3) The amount of implanted calcium sulfate was more [OR = 5.310, (1.302-21.657), p = 0.020], combined with flap surgery [OR = 3.565, (1.195-10.641), p = 0.023], and the thickness of soft tissue coverage in the operation area was thinner [OR = 5.305, (1.336-21.057), p = 0.018]. Longer drainage time [OR = 0.210, (0.045-0.967), p = 0.045] was a protective factor for non-infectious exudation after antibiotic-loaded calcium sulfate implantation. Conclusion: 1) The probability of serous exudation in patients with fracture-associated infection after antibiotic-loaded calcium sulfate surgery was 18.62%. This complication may cause a heavier economic and psychological burden on patients; 2) With the increase of bone infection area and the application of more calcium sulfate, the incidence of serous exudation after antibiotic-loaded calcium sulfate surgery in patients with the fracture-related infection will increase, so we should use the amount of calcium sulfate reasonably on the premise of sufficient control of infection in clinical work, and the incidence of serous exudation will also increase due to the recent skin flap surgery and the thinner soft tissue coverage of calcium sulfate implantation area; 3) Under the premise of being able to drain the drainage from the surgical area, the longer drainage time of the drainage tube has a positive effect on preventing the occurrence of serous exudation.
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Affiliation(s)
- Bing Du
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yu Su
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Dongchen Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Shuai Ji
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yao Lu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yibo Xu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yanling Yang
- Medical College of Yan’an University, Yan’an, Shaanxi, China
| | - Kun Zhang
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Zhong Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Teng Ma
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Gan L, Feng Y, Du B, Fu H, Tian Z, Xue G, Yan C, Cui X, Zhang R, Cui J, Zhao H, Feng J, Xu Z, Fan Z, Fu T, Du S, Liu S, Zhang Q, Yu Z, Sun Y, Yuan J. Bacteriophage targeting microbiota alleviates non-alcoholic fatty liver disease induced by high alcohol-producing Klebsiella pneumoniae. Nat Commun 2023; 14:3215. [PMID: 37270557 PMCID: PMC10239455 DOI: 10.1038/s41467-023-39028-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [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: 09/13/2022] [Accepted: 05/26/2023] [Indexed: 06/05/2023] Open
Abstract
Our previous studies have shown that high alcohol-producing Klebsiella pneumoniae (HiAlc Kpn) in the intestinal microbiome could be one of the causes of non-alcoholic fatty liver disease (NAFLD). Considering antimicrobial resistance of K. pneumoniae and dysbacteriosis caused by antibiotics, phage therapy might have potential in treatment of HiAlc Kpn-induced NAFLD, because of the specificity targeting the bacteria. Here, we clarified the effectiveness of phage therapy in male mice with HiAlc Kpn-induced steatohepatitis. Comprehensive investigations including transcriptomes and metabolomes revealed that treatment with HiAlc Kpn-specific phage was able to alleviate steatohepatitis caused by HiAlc Kpn, including hepatic dysfunction and expression of cytokines and lipogenic genes. In contrast, such treatment did not cause significantly pathological changes, either in functions of liver and kidney, or in components of gut microbiota. In addition to reducing alcohol attack, phage therapy also regulated inflammation, and lipid and carbohydrate metabolism. Our data suggest that phage therapy targeting gut microbiota is an alternative to antibiotics, with potential efficacy and safety, at least in HiAlc Kpn-caused NAFLD.
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Affiliation(s)
- Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Bing Du
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Hanyu Fu
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Ziyan Tian
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Shuheng Du
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Shiyu Liu
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Qun Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Zihui Yu
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China
| | - Ying Sun
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China.
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, 100020, Beijing, China.
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Hu Y, Zu C, Zhang M, Wei G, Li W, Fu S, Hong R, Zhou L, Wu W, Cui J, Wang D, Du B, Liu M, Zhang J, Huang H. Safety and efficacy of CRISPR-based non-viral PD1 locus specifically integrated anti-CD19 CAR-T cells in patients with relapsed or refractory Non-Hodgkin's lymphoma: a first-in-human phase I study. EClinicalMedicine 2023; 60:102010. [PMID: 37251628 PMCID: PMC10209187 DOI: 10.1016/j.eclinm.2023.102010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Background Thus far, all approved chimeric antigen receptor (CAR)-T products are manufactured using modified viruses, which increases the risk of tumorigenesis, costs and production time. We aimed to evaluate the safety and efficacy of a kind of virus-free CAR-T cells (PD1-19bbz), in which an anti-CD19 CAR sequence is specifically integrated at the PD1 locus using clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9, in adults with relapsed/refractory (r/r) B cell non-Hodgkin's lymphoma (B-NHL). Methods This single-arm phase I dose-escalation clinical trial evaluated PD1-19bbz in adult patients with r/r B-NHL from May 3rd 2020 to August 10th 2021. The patients were recruited and treated at the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. Patients underwent leukapheresis and lymphodepleting chemotherapy before PD1-19bbz infusion. After the dose-escalation phase including three cohorts: 2 × 106/kg, 4 × 106/kg, 6 × 106/kg with three patients at each dose level, the optimal biological dose was determined to be 2 × 106/kg, which was then applied to an extended cohort of nine patients. The primary endpoint was the incidence of dose-limiting toxicities (DLT). The secondary endpoint was the response and survival. This trial was registered at www.clinicaltrials.gov as #NCT04213469. Findings Twenty-one patients received PD1-19bbz infusion. Among all treated patients, 19 (90%) patients were diagnosed with stage III or IV disease. Meanwhile, 19 (90%) were stratified as intermediate risk or worse. Of note, four participants had >50% programmed death ligand-1 (PD-L1) expression in pre-treatment tumour sample, including two with extremely high levels (∼80%). There was no DLT identified. Fourteen patients had low-grade (1-2) cytokine release syndrome and two patients received tocilizumab. Four patients experienced immune effector cell-associated neurotoxicity syndrome of grade 1-2. The most common adverse events were hematologic toxicities, including anaemia (n = 6), lymphocyte count decreased (n = 19), neutrophil count decreased (n = 17), white blood cell count decreased (n = 10), and platelet count decreased (n = 2). All patients had objective response and 18 patients reached complete response. At a median follow-up of 19.2 months, nine patients remained in remission, and the estimated median progression-free survival duration was 19.5 months (95% confidence interval: 9.9-infinity), with the median overall survival not reached. Interpretation In this first-in-human study of non-viral specifically integrated CAR-T products, PD1-19bbz exhibited promising efficacy with a manageable toxicity profile. A phase I/II trial of PD1-19bbz in a larger patient cohort is underway. Funding National Key R&D Program of China, National Natural Science Foundation of China, Key Project of Science and Technology Department of Zhejiang Province, Shanghai Zhangjiang National Independent Innovation Demonstration Area, Key Projects of Special Development Funds.
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Affiliation(s)
- Yongxian Hu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Cheng Zu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Mingming Zhang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Guoqing Wei
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Wei Li
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
- BRL Medicine Inc., Shanghai, China
| | - Shan Fu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Ruimin Hong
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Linghui Zhou
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Wenjun Wu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Jiazhen Cui
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Dongrui Wang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Bing Du
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
- BRL Medicine Inc., Shanghai, China
| | - Mingyao Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
- BRL Medicine Inc., Shanghai, China
| | - Jiqin Zhang
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
- BRL Medicine Inc., Shanghai, China
| | - He Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Haematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
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Zhao W, Zhang Y, Li W, Hu Q, Huang H, Xu X, Du B, Li P. Probiotic-fermented Portulaca oleracea L. alleviated DNFB-induced atopic dermatitis by inhibiting the NF-κB signaling pathway. J Ethnopharmacol 2023; 313:116613. [PMID: 37156447 DOI: 10.1016/j.jep.2023.116613] [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] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/03/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Probiotic fermentation is a mild and safe biological method to boost the performance of herbs. Portulaca oleracea L. (PO), with folklore records of purgative, anti-dermatological and anti-epidemic effects, has been demonstrated to possess anti-inflammatory, immunomodulatory, and antioxidant properties. However, the potential of PO for the treatment of atopic dermatitis (AD) has not been sufficiently explored. AIM OF STUDY This study aimed to evaluate the therapeutic benefits of PO and fermented Portulaca oleracea L. (FPO) and explore their intrinsic mechanisms. METHODS By utilizing 2,4-dinitrofluorobenzene-induced AD mice as a model, the histopathology of the lesions was observed using H&E and toluidine blue staining methods; the levels of immunoglobulin E (Ig E), histamine (HIS), and thymic stromal lymphopoietin (TSLP) in serum were measured using ELISA, whereas, the expression of inflammatory cytokines in skin lesion was measured using ELISA and immunohistochemistry experiments. The expression of tumor necrosis factor-α (TNF-α), IKKα, NF-κB mRNA was measured using qPCR; and the expression of TNF-α、p-IKKα, p-IκBα, p-NF-κB was measured using western blotting. RESULTS Both 20 mg/mL PO and FPO alleviated mast cell infiltration and lesion pathology, reduced serum levels of Ig E, HIS and TSLP, down-regulated the expression of AD-related inflammatory cytokines, such as, TNF-α, interferon-γ, and interleukin-4, and increased filaggrin expression. Furthermore, they inhibited the expression of TNF-α, IKKα, and NF-κB genes and TNF-α, p-IKKα, p-NF-κB and p-IκBα proteins associated with the NF-κB signaling pathway. CONCLUSIONS PO and FPO has a positive therapeutic potential on AD, indicating that it may be employed as alternative therapies for AD.
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Affiliation(s)
- Wenjun Zhao
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Yuwei Zhang
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Weijie Li
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Quanzhi Hu
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Haozhang Huang
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xian Xu
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
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Sun Y, Du B, Wang Y, Zhang M, Zhang S. Hydrogen Spillover-Accelerated Selective Hydrogenation on WO 3 with ppm-Level Pd. ACS Appl Mater Interfaces 2023; 15:20474-20482. [PMID: 37040568 DOI: 10.1021/acsami.3c00456] [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] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Hydrogen spillover from the metal to the support opens a fresh avenue to design dual-active site catalysts for selective hydrogenation. However, very limited knowledge has been obtained to reveal the relationship between the capacity of hydrogen spillover and catalytic performance of hydrogenation. Herein, hydrogen spillover-dependent selective hydrogenation has been demonstrated on WO3-supported ppm-level Pd (PdHD/WO3), where the *H species generated and spilled from Pd to WO3 are readily utilized for addition of a reactant. The WO3 supports with a hexagonal phase and a suitable oxygen defect concentration can enhance the capacity of hydrogen spillover, significantly accelerating the catalytic activity of PdHD/WO3. For the hydrogenation of 4-chloronitrobenzene, the PdHD/WO3 catalysts with the highest capacity of hydrogen spillover yielded a turnover frequency (TOF) of 47,488 h-1 (33 times higher than that of traditional Pd/C). Meanwhile, benefiting from the hydrogen spillover, the unique adsorption of 4-chloronitrobenzene via the nitro group on the oxygen vacancy of WO3 guaranteed >99.9% selectivity of 4-chloroaniline during the whole hydrogenation. This work thus helps to create an effective method for fabricating cost-effective nanocatalysts with an extremely low Pd loading for the ideal hydrogenation with extremely high activity and selectivity.
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Affiliation(s)
- Yu Sun
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Bing Du
- Shaanxi Rock New Material Co., Ltd, Baoji 721013, China
| | - You Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Mingkai Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Sai Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
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Xue G, Feng J, Zhang R, Du B, Sun Y, Liu S, Yan C, Liu X, Du S, Feng Y, Cui J, Gan L, Zhao H, Fan Z, Cui X, Xu Z, Fu T, Li C, Huang L, Zhang T, Wang J, Yang R, Yuan J. Three Klebsiella species as potential pathobionts generating endogenous ethanol in a clinical cohort of patients with auto-brewery syndrome: a case control study. EBioMedicine 2023; 91:104560. [PMID: 37060744 PMCID: PMC10139882 DOI: 10.1016/j.ebiom.2023.104560] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/17/2023] Open
Abstract
BACKGROUND Patients with auto-brewery syndrome (ABS) become inebriated after the ingestion of an alcohol-free, high-carbohydrate diet. Our previous work has shown that high-alcohol-producing (HiAlc) Klebsiella pneumoniae can generate excessive endogenous ethanol and cause non-alcoholic fatty liver disease (NAFLD). Therefore, it is reasonable to speculate that such bacteria might play an important role in the pathogenesis of ABS. METHODS The characteristics and metabolites of the intestinal flora from a clinical cohort of patients with ABS were analysed during different stages of disease and compared to a group of healthy controls. An in vitro culture system of relevant samples was used for screening drug sensitivity and ABS-inducing factors. Rabbit intestinal and murine models were established to verify if the isolated strains could induce ABS in vivo. FINDINGS We observed intestinal dysbiosis with decreased abundance of Firmicutes and increased of Proteobacteria in patients with ABS compared with healthy controls. The abundance of the genus Klebsiella in Enterobacteriaceae was strongly associated with fluctuations of patient's blood alcohol concentration. We isolated three species of HiAlc Klebsiella from ABS patients, which were able to induce ABS in mice. Monosaccharide content was identified as a potential food-related inducing factor for alcohol production. Treatments with antibiotics, a complex probiotic preparation and a low-carbohydrate diet not only alleviated ABS, but also erased ABS relapse during the follow-up observation of one of the patients. INTERPRETATION Excessive endogenous alcohol produced by HiAlc Klebsiella species was an underlying cause of bacterial ABS. Combined prescription of appropriate antibiotics, complex probiotic preparation and a controlled diet could be sufficient for treatment of bacteria-caused ABS. FUNDING The funders are listed in the acknowledgement.
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Affiliation(s)
- Guanhua Xue
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China; Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Junxia Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Rui Zhang
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China; Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bing Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ying Sun
- The Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Shiyu Liu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chao Yan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Xinjuan Liu
- Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Shuheng Du
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Yanling Feng
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Jinghua Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Lin Gan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Hanqing Zhao
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Zheng Fan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Xiaohu Cui
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Tongtong Fu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China
| | - Chen Li
- Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Lei Huang
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Ting Zhang
- Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Jing Wang
- Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
| | - Ruifu Yang
- Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
| | - Jing Yuan
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, China; Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Wang Y, Liu Y, Li X, Liu Y, Wang F, Huang Y, Du B, Qian Y, Lv L. Research on synthesis and property of nano-textured Sc 2O 3-MgO efficient antibacterial agents. J Biol Inorg Chem 2023; 28:329-343. [PMID: 36877275 DOI: 10.1007/s00775-023-01995-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/26/2023] [Indexed: 03/07/2023]
Abstract
In order to obtain the inorganic efficient antibacterial agents, the means of ion doping and morphology construction in this research are used to enhance the antibacterial property of nano-MgO, which is according to the "oxidative damage mechanism" and "contact mechanism". In this work, the nano-textured Sc2O3-MgO are synthesized by doping Sc3+ in nano-MgO lattice through calcining at 600 °C. When the Sc3+ content reaches 10%, the nanotextures on the powders surface are pretty clearly visible and uniform, and the specific surface area and the oxygen vacancy are ideal, so that the 10% Sc3+-doped powders (SM-10) has the excellent antibacterial property against E. coli and S. aureus (MBC = 0.03 mg/mL). The efficient antibacterial agents in this research have a better antibacterial effect than the 0% Sc3+-doped powders (SM-0, MBC = 0.20 mg/mL) and the commercial nano-MgO (CM, MBC = 0.40 mg/mL), which have application prospects in the field of antibacterial.
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Affiliation(s)
- Ying Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Yanjing Liu
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Xiyue Li
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yuezhou Liu
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Fuming Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yaping Huang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Bing Du
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yongfang Qian
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Lihua Lv
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
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