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He Y, Xi J, Fang J, Zhang B, Cai W. Aloe-emodin alleviates doxorubicin-induced cardiotoxicity via inhibition of ferroptosis. Free Radic Biol Med 2023; 206:13-21. [PMID: 37364691 DOI: 10.1016/j.freeradbiomed.2023.06.025] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 06/28/2023]
Abstract
Aloe-emodin (AE), a novel ferroptosis inhibitor, alleviates the doxorubicin (DOX)-induced cardiotoxicity in H9c2 rat cardiomyocytes. The inhibition of ferroptosis and the protective effect against cardiotoxicity were evaluated via MTT assay in H9c2 cells. The molecular mechanism of action (MOA) of nuclear factor erythroid 2-related factor 2 (Nrf2) activation, including transactivation of multiple downstream cytoprotective genes, were further assessed by Western blot, luciferase reporter assay and qRT-PCR analyses. Fluorescent imaging was performed to detect the change of intracellular reactive oxygen species, mitochondrial membrane potential and lipid peroxidation. In addition, an infrared spectroscopy was employed to detect the AE-Fe (II) complex. AE, alleviates oxidative stress in DOX-induced H9c2 cells by activating Nrf2 and increasing the expression of Nrf2 downstream antioxidant genes, SLC7A11 and GPX4. Furthermore, AE complexes bivalent iron and regulates the intracellular iron-related genes. In conclusion, the discovery of AE as a novel ferroptosis inhibitor and its MOA provides a new perspective for further exploration of cardio-protective agents in cancer patients during chemotherapy.
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Affiliation(s)
- Ying He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Junmin Xi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China; School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, 210094, China
| | - Baoxin Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.
| | - Wenqing Cai
- Regor Therapeutics Inc,1206 Zhangjiang Road, Building C, Pu Dong New District, Shanghai, 201210, China.
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2
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Liu F, Peng L, Xi J. [High expression of MYH9 inhibits apoptosis of non-small cell lung cancer cells through activating the AKT/c-Myc pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:527-536. [PMID: 37202187 DOI: 10.12122/j.issn.1673-4254.2023.04.04] [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] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
OBJECTIVE To investigate the role of myosin heavy chain 9 (MYH9) in regulation of cell proliferation, apoptosis, and cisplatin sensitivity of non-small cell lung cancer (NSCLC). METHODS Six NSCLC cell lines (A549, H1299, H1975, SPCA1, H322, and H460) and a normal bronchial epithelial cell line (16HBE) were examined for MYH9 expression using Western blotting. Immunohistochemical staining was used to detect MYH9 expression in a tissue microarray containing 49 NSCLC and 43 adjacent tissue specimens. MYH9 knockout cell models were established in H1299 and H1975 cells using CRISPR/Cas9 technology, and the changes in cell proliferation cell were assessed using cell counting kit-8 (CCK8) and clone formation assays; Western blotting and flow cytometry were used to detect apoptosis of the cell models, and cisplatin sensitivity of the cells was evaluated using IC50 assay. The growth of tumor xenografts derived from NSCLC with or without MYH9 knockout was observed in nude mice. RESULTS MYH9 expression was significantly upregulated in NSCLC (P < 0.001), and the patients with high MYH9 expression had a significantly shorter survival time (P=0.023). In cultured NSCLC cells, MYH9 knockout obviously inhibited cell proliferation (P < 0.001), promoted cell apoptosis (P < 0.05), and increased their chemosensitivity of cisplatin. In the tumor-bearing mouse models, the NSCLC cells with MYH9 knockout showed a significantly lower growth rate (P < 0.05). Western blotting showed that MYH9 knockout inactivated the AKT/c- Myc axis (P < 0.05) to inhibit the expression of BCL2- like protein 1 (P < 0.05), promoted the expression of BH3- interacting domain death agonist and the apoptosis regulator BAX (P < 0.05), and activated apoptosis-related proteins caspase-3 and caspase-9 (P < 0.05). CONCLUSION High expression of MYH9 contributes to NSCLC progression by inhibiting cell apoptosis via activating the AKT/c-Myc axis.
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Affiliation(s)
- F Liu
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L Peng
- Cancer Center, Integrated Hospital of Traditional Chinese and Western Medicine, Southern Medical University, Guangzhou 510315, China
| | - J Xi
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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3
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Jian J, Chi Y, Zheyu X, Hong L, Xi J, Kunjie W. Urinary uromodulin and kidney stone disease: A mendelian randomization study and mediation analysis. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00435-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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4
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Guo XW, Yu ZQ, Xi J, Ren H, Xiang XY, Wu J, Fang J, Wu QX. Isolation and Identification of Novel Antioxidant Polyketides from an Endophytic Fungus Ophiobolus cirsii LZU-1509. J Agric Food Chem 2023; 71:1593-1606. [PMID: 36634077 DOI: 10.1021/acs.jafc.2c07386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Sixteen new polyketides, ophicirsins A-P (1-16), including four novel carbon skeletons (5-9, 14, 15, and 16), were isolated from the extract of an endophytic fungus Ophiobolus cirsii LZU-1509. The unique frameworks of ophicirsin N (14) and O (15) feature a different cyclic ether connected with an aromatic ring system. Ophicirsin P (16) is characterized by the unprecedented heterozygote of a polyketide and an alkaloid. The absolute stereochemistries of those polyketides were characterized via single-crystal X-ray diffraction analysis and the experimental and computational electric circular dichroism spectra comparison. Theoretical reaction pathways in the fermentation to generate different novel skeletons starting from acetyl CoA and malonyl CoA helped to assign their structures. Compounds 1-16 appear almost nontoxic in HepG2 and HT-1080 tumor cells. Their antioxidant effects were further evaluated, and 15 exhibits an excellent protection activity in hydrogen peroxide-stimulated oxidative damage in neuron-like PC12 cells via screening all compounds. Moreover, 15 displays a greater ability to scavenge the 2,2-diphenyl-1-picrylhydrazyl free radicals than resveratrol. Taken together, these findings suggest that the novel polyketides could serve as potential antioxidant agents for neuroprotection.
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Affiliation(s)
- Xiao-Wei Guo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhen-Qing Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Junmin Xi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hao Ren
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xin-Yu Xiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jia Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu 210094, China
| | - Quan-Xiang Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
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5
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Xi J, Tian LL, Xi J, Girimpuhwe D, Huang C, Ma R, Yao X, Shi D, Bai Z, Wu QX, Fang J. Alterperylenol as a Novel Thioredoxin Reductase Inhibitor Induces Liver Cancer Cell Apoptosis and Ferroptosis. J Agric Food Chem 2022; 70:15763-15775. [PMID: 36472370 DOI: 10.1021/acs.jafc.2c05339] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Natural products are a rich resource for discovering innovational drugs. Herein, we isolated and characterized two compounds dihydroalterperylenol (DAP) and alterperylenol (AP) from Alternaria sp. MG1, an endophytic fungus isolated from Vitis quinquangularis, and investigated the underlying antitumor mechanism of AP. Mechanistically, AP inhibits the growth of HepG2 cells by targeting the selenoprotein thioredoxin reductase (TrxR) and ultimately induces cell apoptosis and ferroptosis. Compared to DAP, the α,β-unsaturated carbonyl structure of AP is an indispensable moiety for its antitumor activity and TrxR inhibition. Specifically, inhibition of TrxR causes the extensive reactive oxygen species and consequently results in DNA damage, G2/M cell cycle arrest, and mitochondrial fission. Furthermore, ferroptosis is driven via excess toxic lipid peroxidation and elevation of intracellular iron levels via regulating iron-related proteins. In vivo validation also shows that AP owns anticancer activity in xenograft mice. Collectively, our results disclose a novel natural TrxR inhibitor AP exerting the antitumor effect via inducing cell apoptosis and ferroptosis and evidence that AP is a promising candidate agent for liver carcinoma therapy. The link of TrxR inhibition to ferroptosis further highlights the physiological importance of TrxR in regulating ferroptosis.
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Affiliation(s)
- Junmin Xi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Li-Li Tian
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Jiahui Xi
- General Surgery Department, Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou730000, Gansu Province, China
| | - Desire Girimpuhwe
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Chongfei Huang
- General Surgery Department, Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou730000, Gansu Province, China
| | - Ruixia Ma
- General Surgery Department, Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou730000, Gansu Province, China
| | - Xiaojun Yao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Danfeng Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Zhongtian Bai
- General Surgery Department, Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou730000, Gansu Province, China
| | - Quan-Xiang Wu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou730000, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu210094, China
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Yang Z, Xi J, Shu N, Liu F, Zhou L, Lin Y. Craniopagus and rachipagus conjoined twins in triplet pregnancy: challenges in early prenatal diagnosis at 12 weeks. Ultrasound Obstet Gynecol 2022; 60:700-702. [PMID: 35751887 DOI: 10.1002/uog.26016] [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] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/30/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Z Yang
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - J Xi
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - N Shu
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - F Liu
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - L Zhou
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - Y Lin
- Department of Obstetrics and Gynecology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
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7
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Xi J, Zhang Z, Wang Z, Wu Q, He Y, Xu Y, Ding Z, Zhao H, Da H, Zhang F, Zhao H, Fang J. Hinokitiol functions as a ferroptosis inhibitor to confer neuroprotection. Free Radic Biol Med 2022; 190:202-215. [PMID: 35985562 DOI: 10.1016/j.freeradbiomed.2022.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 12/22/2022]
Abstract
The intrinsic link of ferroptosis to neurodegeneration, such as Parkinson's disease and Alzheimer's disease, has set promises to apply ferroptosis inhibitors for treatment of neurodegenerative disorders. Herein, we report that the natural small molecule hinokitiol (Hino) functions as a potent ferroptosis inhibitor to rescue neuronal damages in vitro and in vivo. The action mechanisms of Hino involve chelating irons and activating cytoprotective transcription factor Nrf2 to upregulate the antioxidant genes including solute carrier family 7 member 11, glutathione peroxidase 4 and Heme oxygenase-1. In vivo studies demonstrate that Hino rescues the deficits of locomotor activity and neurodevelopment in zebrafishes. In addition, Hino shows the efficient blood-brain barrier permeability in mice, supporting the application of Hino for brain disorders. Paclitaxel is one of the most widely used broad-spectrum antineoplastic agents. However, its neurotoxic side effect is a severe concern. We demonstrate that the neurotoxicity of paclitaxel is ferroptosis-related and Hino also alleviates the paclitaxel-induced neurotoxicity without compromising its cytotoxicity to cancer cells. Hino also salvages the neurobehavioral impairment by paclitaxel in zebrafishes. Collectively, the discovery of Hino as a novel ferroptosis inhibitor and disclosure of its action mechanisms establish a foundation for the further development of Hino as a neuroprotective agent.
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Affiliation(s)
- Junmin Xi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China; School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, Lanzhou, 730000, China
| | - Zhijun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Zuo Wang
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, Lanzhou, 730000, China
| | - Qingfeng Wu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Ying He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yanyi Xu
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, Lanzhou, 730000, China
| | - Zhenjiang Ding
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Huanhuan Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Honghong Da
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Fang Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Haiyu Zhao
- School of Life Sciences, Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, Lanzhou University, Lanzhou, 730000, China.
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China; School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China.
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8
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Chen L, Xu H, Zhou L, Liu C, Xi J, Wu Y, Yang L, Guo Y. Prenatal diagnosis of ductal origin of distal pulmonary artery: presentation of three cases and literature review. Ultrasound Obstet Gynecol 2022; 60:284-290. [PMID: 34687572 DOI: 10.1002/uog.24799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Ductal origin of distal pulmonary artery (DODPA) is a rare congenital cardiovascular anomaly, with an incidence of approximately 1 in 200 000 people. It involves the proximal interruption of one pulmonary artery branch, with the distal part arising from the base of the brachiocephalic artery, via the ipsilateral ductus arteriosus (DA) and the intrapulmonary branch of the pulmonary artery is usually intact. If timely treatment is not provided after birth, it is very likely that, due to DA closure, severe hypoplasia will occur in the lung supplied by the abnormal pulmonary artery. Hence, prenatal diagnosis of DODPA is important to enable initiation of prostaglandin treatment and early rehabilitation of the affected lung. Herein, we report three cases of fetal DODPA diagnosed via two-dimensional (2D) ultrasonography combined with four-dimensional (4D) spatiotemporal image correlation. We also present a literature review, and explore the ultrasonographic findings and the importance of 2D and 4D ultrasonography in obtaining an accurate prenatal diagnosis of DODPA. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- L Chen
- Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - H Xu
- Department of Ultrasonography, West China Second University Hospital, Sichuan University, Chengdu, China
| | - L Zhou
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - C Liu
- Department of Radiology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - J Xi
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - Y Wu
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - L Yang
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - Y Guo
- Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, China
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Yang Z, Liu F, Xi J, Chen L, Zhou L, Lin Y. Non-visualization of choroid plexus of fourth ventricle in first-trimester as abnormal clue to Noonan syndrome with agenesis of corpus callosum. Ultrasound Obstet Gynecol 2022; 60:292-294. [PMID: 35229917 DOI: 10.1002/uog.24882] [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] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Z Yang
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - F Liu
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - J Xi
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - L Chen
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - L Zhou
- Department of Ultrasound, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Y Lin
- Department of Obstetrics and Gynecology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
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Chen L, Zhou L, Guo Y, Liu C, Xi J. STIC with HDlive flow in antenatal diagnosis of double vascular ring: case of right aortic arch with aberrant left subclavian artery and concurrent complete pulmonary artery sling. Ultrasound Obstet Gynecol 2022; 59:408-410. [PMID: 34529320 DOI: 10.1002/uog.24774] [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] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Affiliation(s)
- L Chen
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - L Zhou
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - Y Guo
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - C Liu
- Department of Radiology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - J Xi
- Department of Ultrasonography, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, China
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11
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Ding Z, Xi J, Zhong M, Chen F, Zhao H, Zhang B, Fang J. Cynaropicrin Induces Cell Cycle Arrest and Apoptosis by Inhibiting PKM2 to Cause DNA Damage and Mitochondrial Fission in A549 Cells. J Agric Food Chem 2021; 69:13557-13567. [PMID: 34726896 DOI: 10.1021/acs.jafc.1c05394] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Metabolic reprogramming is critical for tumorigenesis. Pyruvate kinase M2 (PKM2) is overexpressed in lung carcinoma cells and plays a critical role in the Warburg effect, making the enzyme a research hotspot for anticancer drug development. Cynaropicrin (CYN), a natural sesquiterpene lactone compound from artichoke, has received increasing consideration due to its consumable esteem and pharmacological properties. Our data reveal that CYN not only inhibited the purified PKM2 activity but also decreased the cellular PKM2 expression in A549 cells. The inhibition of PKM2 leads to the upregulation of p53 and the downregulation of the DNA repair enzyme poly (ADP-ribose) polymerase (PARP), and subsequently causes the cell cycle arrest. Additionally, CYN inhibits the interaction of PKM2 and Nrf2, resulting in the impairment of cellular antioxidant capacity, induction of oxidative stress, and mitochondrial damages. Overexpression of PKM2 attenuates the CYN-induced DNA damage, mitochondrial fission, and cell viability. Thus, targeting PKM2 provides an original mechanism for understanding the pharmacological impact of CYN and assists in the further development of CYN as an anticancer agent.
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Affiliation(s)
- Zhenjiang Ding
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Junmin Xi
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Miao Zhong
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Fan Chen
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Huanhuan Zhao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Baoxin Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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12
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Qiu M, Guo Y, Guo W, Nian W, Liao W, Xu Z, Zhang W, Zhang Y, Wei X, Xue L, Tang W, Wu Y, Ren G, Wang L, Xi J, Wang Y, Li M, Hausheer F, Hu C, Xu R. 905P FIH phase I dose escalation and dose expansion study of anti-EGFR ADC MRG003 in patients with advanced solid tumors. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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13
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Hui Y, Tang T, Wang J, Zhao H, Yang HY, Xi J, Zhang B, Fang J, Gao K, Wu Y. Fusaricide is a Novel Iron Chelator that Induces Apoptosis through Activating Caspase-3. J Nat Prod 2021; 84:2094-2103. [PMID: 34292737 DOI: 10.1021/acs.jnatprod.0c01322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nonsmall cell lung cancer (NSCLC) has been a fatal and refractory disease worldwide. Novel therapeutic developments based on fundamental investigations of anticancer mechanisms underlie substantial foundations to win the fight against cancer diseases. In this study, we isolated a natural product fusaricide (FCD) from an endophytic fungus of Lycium barbarum, identified as Epicoccum sp. For the first time, we discovered that FCD potently inhibited proliferation in a variety of human NSCLC cell lines, with relatively less toxicity to normal cells. Our study exhibited that FCD induced apoptosis, caused DNA damage and cell cycle arrest in G0/G1 phase, and activated caspase-3 as well as other apoptosis-related factors in human NSCLC NCI-H460 cells. FCD was proven to be an iron chelator that actively decreased levels of cellular labile iron pool in NCI-H460 cells in our study. FeCl3 supplement reversed FCD-induced apoptosis. The upregulation of transferrin receptor 1 (TfR1) and downregulation of ferritin heavy chain (FTH) expression were observed after FCD treatment. In summary, our study highlighted the potential anticancer effects of FCD against human NSCLCs and demonstrated that the FCD-mediated apoptosis depended on binding to intracellular iron.
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Affiliation(s)
- Yaling Hui
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Ting Tang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Jing Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Huanhuan Zhao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Hong-Ying Yang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Junmin Xi
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Baoxin Zhang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Kun Gao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Yueting Wu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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Zhang J, Wang X, Ren Z, Shao S, Hou Z, Wang Z, Xi J, Bai W. Impact of age and menopausal stage on serum anti-Müllerian hormone levels in middle-aged women. Climacteric 2021; 24:618-623. [PMID: 34427163 DOI: 10.1080/13697137.2021.1965114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE This study aimed to evaluate the association between age, menopausal stage and serum anti-Müllerian hormone (AMH) levels in middle-aged women. METHODS In this cross-sectional study, the serum AMH levels of 288 healthy women aged 40-55 years (divided into age groups: 40-44, 45-49 and 50-55 years) were evaluated. Stages of Reproductive Aging Workshop + 10 criteria were used to categorize these women into menopausal stages: late reproductive, menopausal transition and early postmenopausal stages. The impact of age, menopausal stage and hormone replacement therapy on serum AMH levels was analyzed using multi-factor analysis of variance. Effects of body mass index, smoking status and oral contraceptive use were simultaneously considered. RESULTS The median AMH level was 0.140 ng/ml. Log-AMH levels varied according to age group (variance = 20.113, F = 88.538, p < 0.001) and menopausal stage (variance = 5.543, F = 24.501, p < 0.001). An exponential model defined as AMH = 227,421.757 × e(-0.301 × age) was fit to describe the decline in AMH level with age. The 5th-95th percentiles of the AMH levels ranged from less than 0.020 to 3.150, less than 0.020 to 1.944 and less than 0.020 to 0.030 ng/ml in the aforementioned menopausal stages, respectively. CONCLUSION Age and menopausal stage were associated with AMH levels; age had a greater impact on AMH than menopausal stage in middle-aged women.
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Affiliation(s)
- J Zhang
- Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - X Wang
- Department of Obstetrics and Gynecology, Ninth School of Clinical Medicine, Peking University, Beijing, China
| | - Z Ren
- Department of Maternal and Child Health, School of Public Health, Peking University, Beijing, China
| | - S Shao
- Medical Examination Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Z Hou
- Department of Obstetrics and Gynecology, Beijing Haidian District Maternal and Child Health Hospital, Beijing, China
| | - Z Wang
- Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - J Xi
- Department of Obstetrics and Gynecology, Beijing Xicheng Maternal and Child Health Hospital, Beijing, China
| | - W Bai
- Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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Sun J, Luo S, Suetterlin KJ, Song J, Huang J, Zhu W, Xi J, Zhou L, Lu J, Lu J, Zhao C, Hanna MG, Männikkö R, Matthews E, Qiao K. Clinical and genetic spectrum of a Chinese cohort with SCN4A gene mutations. Neuromuscul Disord 2021; 31:829-838. [PMID: 33965302 DOI: 10.1016/j.nmd.2021.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/02/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
Skeletal muscle sodium channelopathies due to SCN4A gene mutations have a broad clinical spectrum. However, each phenotype has been reported in few cases of Chinese origin. We present detailed phenotype and genotype data from a cohort of 40 cases with SCN4A gene mutations seen in neuromuscular diagnostic service in Huashan hospital, Fudan University. Cases were referred from 6 independent provinces from 2010 to 2018. A questionnaire covering demographics, precipitating factors, episodes of paralysis and myotonia was designed to collect the clinical information. Electrodiagnostic studies and muscle MRI were retrospectively analyzed. The clinical spectrum of patients included: 6 Hyperkalemic periodic paralysis (15%), 18 Hypokalemic periodic paralysis (45%), 7 sodium channel myotonia (17.5%), 4 paramyotonia congenita (10%) and 5 heterozygous asymptomatic mutation carriers (12.5%). Review of clinical information highlights a significant delay to diagnosis (median 15 years), reports of pain and myalgia in the majority of patients, male predominance, circadian rhythm and common precipitating factors. Electrodiagnostic studies revealed subclinical myotonic discharges and a positive long exercise test in asymptomatic carriers. Muscle MRI identified edema and fatty infiltration in gastrocnemius and soleus. A total of 13 reported and 2 novel SCN4A mutations were identified with most variants distributed in the transmembrane helix S4 to S6, with a hotspot mutation p.Arg675Gln accounting for 32.5% (13/40) of the cohort. Our study revealed a higher proportion of periodic paralysis in SCN4A-mutated patients compared with cohorts from England and the Netherlands. It also highlights the importance of electrodiagnostic studies in diagnosis and segregation studies.
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Affiliation(s)
- J Sun
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - S Luo
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China; Department of Neurology, North Huashan Hospital, Fudan University, Shanghai, 200003, China
| | - K J Suetterlin
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, UCL, London, WC1N 3BG, United Kingdom
| | - J Song
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J Huang
- Department of Clinical Electrophysiology, Institute of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - W Zhu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J Xi
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - L Zhou
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J Lu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J Lu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - C Zhao
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - M G Hanna
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, UCL, London, WC1N 3BG, United Kingdom
| | - R Männikkö
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, UCL, London, WC1N 3BG, United Kingdom
| | - E Matthews
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, UCL, London, WC1N 3BG, United Kingdom; Atkinson Morley Neuromuscular Centre, Regional Neurosciences Centre, Department of Neurology, St George's University Hospitals NHS Foundation Trust, London, United Kingdom
| | - K Qiao
- Department of Clinical Electrophysiology, Institute of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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Liang F, Xi J, Chen X, Huang J, Jin D, Zhu X. Curcumin decreases dibutyl phthalate-induced renal dysfunction in Kunming mice via inhibiting oxidative stress and apoptosis. Hum Exp Toxicol 2021; 40:1528-1536. [DOI: 10.1177/09603271211001124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Curcumin (Cur) has been used extensively in dietary supplement with antioxidant and anti-apoptotic properties. Although dibutyl phthalate (DBP) has adverse effects on the kidney, any association between DBP exposure and the role of Cur is unclear. We tested the hypothesis that exposure to DBP has adverse consequences on renal dysfunction in mice and the potential protective role of Cur in decreasing DBP-induced renal dysfunction via inhibiting oxidative stress and apoptosis. Kidney function, oxidative stress biomarkers, and apoptosis factors as well as Bcl-2 and Bax were investigated. The results showed a marked increase of renal dysfunction, oxidative stress and apoptosis level after DBP exposure compared to the control. While administration of Cur to DBP-treated mice may reduce these adverse biochemical changes compared with DBP-alone group. Overall, these results suggest that oxidative stress and apoptosis are involved in DBP-induced renal disorder, whereas Cur plays a protective role in inhibiting these two pathways.
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Affiliation(s)
- F Liang
- These authors contributed equally to this work
| | - J Xi
- These authors contributed equally to this work
| | - X Chen
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, People’s Republic of China
| | - J Huang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, People’s Republic of China
| | - D Jin
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, People’s Republic of China
| | - X Zhu
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, People’s Republic of China
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Zhao X, Bai X, Li JL, Li SM, Xi J. Sevoflurane improves circulatory function and pulmonary fibrosis in rats with pulmonary arterial hypertension through inhibiting NF-κB signaling pathway. Eur Rev Med Pharmacol Sci 2020; 23:10532-10540. [PMID: 31841209 DOI: 10.26355/eurrev_201912_19694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the influences of sevoflurane inhalation therapy on circulation function and pulmonary fibrosis in rats with pulmonary arterial hypertension (PAH) and the nuclear factor-κB (NF-κB) signaling pathway. MATERIALS AND METHODS A total of 30 adult male Sprague-Dawley rats were randomly divided into three groups, including control group (CTL group, n=10), PAH group (n=10), and PAH + sevoflurane group (n=10) using a random number table. Subsequently, the pulmonary artery right ventricular systolic pressure (RVSP) and right ventricular hypertrophy index (RVHI) were measured. Rats in PAH group were subcutaneously injected with 60 mg/kg monocrotaline once to establish the model of PAH. 28 d later, the differences in the morphology of pulmonary tissues and the protein expression levels of phosphorylated inhibitory κB (p-IκB), p-P65, P65, cyclin D1, proliferating cell nuclear antigen (PCNA) and tubulin among the three groups were analyzed via hematoxylin-eosin (HE) staining and Western blotting, respectively. Meanwhile, the messenger ribonucleic acid (mRNA) expression level of P65 was determined via Reverse Transcription-quantitative Polymerase Chain Reaction (RT-qPCR). Additionally, changes in the expression levels of Ki-67 and α-smooth muscle actin (α-SMA) in rat pulmonary tissues of the three groups were evaluated through immunohistochemistry. RESULTS According to HE staining results, compared with CTL group, rats in PAH group exhibited significant thickening of the pulmonary artery wall, reduction of the vascular lumen, inflammatory cell infiltration, and thrombosis in some small arteries. This indicated that the PAH model was successfully established in rats. Compared with PAH group, PAH + sevoflurane group showed a significantly improved morphology of rat pulmonary tissues. Western blotting demonstrated that the protein expression levels of p-IκB, p-P65, and P65 in rat pulmonary tissues of PAH group were remarkably higher than CTL group (p<0.01). However, they were notably down-regulated in PAH + sevoflurane group when compared with those in PAH group (p<0.05). The above experimental results suggested that the NF-κB signaling pathway in pulmonary tissues of rats in PAH group was activated and was inhibited by sevoflurane. Subsequent RT-qPCR results indicated that no significant (N.S.) differences were observed in the mRNA level of P65 among the three groups. Compared with CTL group, PAH group showed significantly up-regulated levels of Ki-67 and α-SMA in rat pulmonary tissues (p<0.01). However, their expression levels were markedly reduced in PAH + sevoflurane group when compared with PAH group (p<0.05). Finally, the detection of pulmonary circulatory function-related indicators illustrated that RVSP and RVHI increased significantly in PAH group in comparison with CTL group. However, they declined remarkably in PAH + sevoflurane group when compared with those in PAH group (p<0.05). CONCLUSIONS Sevoflurane down-regulates the levels of p-IκB, p-P65, and P65 to repress the activation of the NF-κB signaling pathway. This may reduce pulmonary fibrosis and ultimately prevent PAH.
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Affiliation(s)
- X Zhao
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China.
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Zhong H, Zheng Y, Lin P, Zhao Z, Xi J, Zhu W, Yu M, Zhang W, Lv H, Yan C, Hu J, Wang Z, Lu J, Yuan Y, Luo S. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Zhong H, Yu M, Lin P, Zhao Z, Xi J, Zhu W, Zheng Y, Zhang W, Lv H, Yan C, Hu J, Wang Z, Lu J, Yuan Y, Luo S. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Morley NA, Lim B, Xi J, Quintana-Nedelcos A, Leong Z. Magnetic properties of the complex concentrated alloy system CoFeNi 0.5Cr 0.5Al x. Sci Rep 2020; 10:14506. [PMID: 32879420 PMCID: PMC7468281 DOI: 10.1038/s41598-020-71463-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/17/2020] [Indexed: 11/09/2022] Open
Abstract
We study the change in magnetisation with paramagnetic Al addition in the CoFeNi0.5Cr0.5-Alx (x: 0, 0.5, 1, and 1.5) complex concentrated alloy. The compositions were developed utilising the Mulliken electronegativity and d-electron/atom ratio. Spherical FeCr rich nanoprecipitates are observed for X: 1.0 and 1.5 in an AlCoNi-rich matrix. A ~ 5 × increase in magnetisation (from 22 to 96 Am2/kg) coincides with this nanoprecipitate formation-the main magnetic contribution is determined to be from FeCr nanoprecipitates. The magnetisation increase is strange as paramagnetic Al addition dilutes the ferromagnetic Fe/Co/Ni additions. In this paper we discuss the magnetic and structural characterisation of the CoFeNi0.5Cr0.5-Alx composition and attempt to relate it to the interfacial energy.
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Affiliation(s)
- N A Morley
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK
| | - B Lim
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK
| | - J Xi
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK
| | - A Quintana-Nedelcos
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK
| | - Z Leong
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK.
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Guo C, Kunjie W, Xi J. MCP-1 regulates proliferation and contraction of human bladder smooth muscle cells under pathological hydrostatic pressure. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32695-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Liu Y, Yue D, Zhu W, Li J, Cai S, Luo S, Xi J, Lin J, Lu J, Zhou L, Liang Z, Lu J, Zhao C. EP.26Phenotype may predict the clinical severity of facioscapulohumeral muscular dystrophy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu Y, Yue D, Zhu W, Li J, Cai S, Luo S, Xi J, Lin J, Lu J, Zhou L, Liang Z, Lu J, Zhao C. EP.36PATCHS MRI score correlates with clinical severity in facioscapulohumeral muscular dystrophy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jing S, Lu J, Song J, Luo S, Zhou L, Quan C, Xi J, Zhao C. P.376Effect of low-dose rituximab treatment on T- and B-cell lymphocyte imbalance in refractory myasthenia gravis. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhu W, Luo S, Wang Z, Lin J, Xi J, Yue D, Lu J, Zhao C. P.232Hereditary myopathy with early respiratory failure in Chinese population. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Xi J, Zhang Z, Zhu Q, Zhong G. Evolution from Natural β-Carboline Alkaloids to Obtain 1,2,4,9-tetrahydro-3-thia-9-aza-fluorene Derivatives as Potent Fungicidal Agents against Rhizoctonia solani. Int J Mol Sci 2018; 19:E4044. [PMID: 30558145 PMCID: PMC6320924 DOI: 10.3390/ijms19124044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/05/2018] [Accepted: 12/10/2018] [Indexed: 01/09/2023] Open
Abstract
Rice sheath blight, caused by Rhizoctonia solani, is a globally important rice disease and the increasing resistance of this pathogen highlights the need for new active compounds against rice sheath blight. In this study, natural β-carboline alkaloids were optimized to obtain a series of 1,2,4,9-tetrahydro-3-thia-9-aza-fluorene derivatives and evaluated for their fungicidal activity and mode of action against R. solani. Of these compounds, 18 exhibited significant in vitro fungicidal activity against R. solani, with an EC50 value of 2.35 μg/mL, and was more active than validamycin A. In vivo bioassay also demonstrated that 18 displayed superior protective and curative activities as compared to validamycin A. Mechanistically, 18 not only induced the loss of mitochondrial membrane potential and accumulation of reactive oxygen species, but also interfered with DNA synthesis. Therefore, compound 18 displayed pronounced in vitro and in vivo fungicidal activity against R. solani and could be used as a potential candidate for the control of rice sheath blight.
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Affiliation(s)
- Junmin Xi
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Zhijun Zhang
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Qi Zhu
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Guohua Zhong
- Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
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Luo J, Wang X, Ma F, Kang G, Ding Z, Ye C, Pan Y, Zhao Y, Hong S, Chen J, Xi J, Wen S, Lin Y, Li X, Qiu L, Yang X, Li G, Yang J, Sun Q. Long-term immunogenicity and immune persistence of live attenuated and inactivated hepatitis a vaccines: a report on additional observations from a phase IV study. Clin Microbiol Infect 2018; 25:1422-1427. [PMID: 30496870 DOI: 10.1016/j.cmi.2018.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/24/2018] [Accepted: 11/03/2018] [Indexed: 12/20/2022]
Abstract
Both live attenuated (HA-L) and inactivated (HA-I) hepatitis A vaccine were licensed for routine use in China. Although phase 1, 2 and 3 clinical studies of both vaccines have been completed, further systematic evaluation of their immunogenicity and immunological persistence under phase 4 clinical studies in a wide range of conditions and involving large populations is necessary. A phase IV clinical trial (NCT02601040) was performed in 9000 participants over 18 months of age. Geometric mean concentrations (GMCs) and seroconversion rates (SRs) were compared at five time points during 3 years for 1800 individuals among them. The SRs of HA-L and HA-I were 98.08% (95% CI 95.59%-99.38%) and 99.64% (95% CI 98.93%-100.00%) respectively 28 days after administration of the first dose, and remained at 97.07% (95% CI 94.31%-98.73%) or above and 96.73% (95% CI 94.07%-98.42%) or above respectively during the following 3 years. The GMCs for both the HA-L and HA-I groups showed that both vaccines elicited high anti-HAV titres, considerably more than the threshold of protection needed against HAV infection in humans, and these titres were sustained. Hence, both HA-I and HA-L vaccines could provide an excellent long-term protective effect, and supported the routine use of both vaccines.
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Affiliation(s)
- J Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China; Kunming Medical University Haiyuan College, Kunming, China
| | - X Wang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - F Ma
- Jiangsu Provincial Centre of Disease Control and Prevention, Nanjing, China
| | - G Kang
- Jiangsu Provincial Centre of Disease Control and Prevention, Nanjing, China
| | - Z Ding
- Yunnan Provincial Centre of Disease Control and Prevention, Kunming, Yunnan Province, China
| | - C Ye
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China; Kunming Medical University, Kunming, China
| | - Y Pan
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - Y Zhao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - S Hong
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China; Kunming Medical University, Kunming, China
| | - J Chen
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - J Xi
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - S Wen
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - Y Lin
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - X Li
- The Affiliated Children's Hospital of Kunming Medical University, Kunming, China
| | - L Qiu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; The Affiliated Children's Hospital of Kunming Medical University, Kunming, China
| | - X Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - G Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China
| | - J Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China.
| | - Q Sun
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, China; Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China; Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Kunming, China.
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Yang D, Xi J, Xing Y, Tang X, Dai X, Li K, Li H, Lv X, Lu D, Wang H. A new method for neonatal rat ventricular myocyte purification using superparamagnetic iron oxide particles. Int J Cardiol 2018; 270:293-301. [PMID: 29908831 DOI: 10.1016/j.ijcard.2018.05.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Neonatal rat ventricular myocytes (NRVMs) have proven to be an ideal research model for cardiac disease. However, the current methods to purify NRVMs have a limitation to obtain high purity. The purpose of this study was to develop a NRVM purification method by using superparamagnetic iron oxide particles (SIOP). METHODS NRVMs were purified by using SIOP (SIOP group). The differential attachment with or without bromodeoxyuridine (BrdU) treatment served as control and BrdU groups, respectively. The Percoll gradient (Percoll) and magnetic-activated cell sorting (MACS) methods were performed to compare the purity and viability of NRVMs with SIOP method. RESULTS The SIOP group enriched NRVMs up to 93.9 ± 2.0% purity determined by flow cytometry (FCM) and 95.6 ± 1.3% by immunofluorescence count (IF). In contrast, the control group gave purities of 71.9 ± 2.9% (by FCM) and 66.8 ± 8.9% (by IF), and the BrdU group obtained 82.0 ± 1.3% (by FCM) and 83.1 ± 2.4% (by IF). The purity of SIOP-isolated NRVMs was not different from that of Percoll and MACS groups. However, the cardiomyocytes separated by these methods, except SIOP protocol, were mixed with intrinsic cardiac adrenergic cells. NRVMs purified by SIOP shaped the similar three-dimensional morphology, with no difference in cell yield, viability and cytosolic Ca2+ homeostasis at 24 h after isolation compared with NRVMs in other groups. Furthermore, SIOP-purified NRVMs retained the responses to phenylephrine and lipopolysaccharide challenge. CONCLUSION We first reported an efficient and novel method to purify NRVMs using SIOP, which may help accelerate innovative research in the field of cardiomyocyte biology.
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Affiliation(s)
- Duomeng Yang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Junmin Xi
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Yun Xing
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiangxu Tang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiaomeng Dai
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Kaiying Li
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Hongmei Li
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiuxiu Lv
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Daxiang Lu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China.
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Chen Y, Xi J, Zhu W, Lin J, Luo S, Yue D, Cai S, Sun C, Zhao C, Mitsuhashi S, Nishino I, Xu M, Lu J. MYOFIBRILLAR AND DISTAL MYOPATHIES. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Luo S, Cai S, Gao M, Xi J, Liu Z, Yue D, Lu J, Zhao C. LIMB-GIRDLE MUSCULAR DYSTROPHY I. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Zhang FX, Xi J, Zhang Y, Tong Y, Xue H, Huang R, Trautmann C, Weber WJ. Local structure and defects in ion irradiated KTaO 3. J Phys Condens Matter 2018; 30:145401. [PMID: 29469815 DOI: 10.1088/1361-648x/aab1a2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The modification of the local structure in cubic perovskite KTaO3 irradiated with 3 MeV and 1.1 GeV Au ions is studied by Raman and x-ray absorption spectroscopy, complemented by density functional theory (DFT) calculations. In the case of irradiation with 3 MeV Au ions where displacement cascade processes are dominant, the Ta L3-edge x-ray absorption measurements suggest that a peak corresponding to the Ta-O bonds in the TaO6 octahedra splits, which is attributed to the formation of TaK antisite defects that are coupled with oxygen vacancies, V O. This finding is consistent with the DFT calculations. Under irradiation with 1.1 GeV ions, the intense ionization and electronic energy deposition lead to a blue shift and an intensity reduction of active Raman bands. In the case of sequential irradiations, extended x-ray absorption fine structure measurements reveal a decrease in concentration of coupled TaK-V O defects under subsequent irradiation with 1.1 GeV Au ions.
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Affiliation(s)
- F X Zhang
- Division of Materials Science and Technology, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
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Xi J, Oza A, Thomas S, Naughton M, Ademuyiwa F, Weilbaecher KN, Suresh R, Bose R, Cherian MA, Hernandez-Aya L, Frith A, Peterson LL, Krishnamurthy J, Ma CX. Abstract P5-21-30: Retrospective review of palbociclib (Pal) efficacy and benefit from subsequent treatments following Pal progression in patients (pts) with hormone receptor positive (HR+) and HER2 negative (HER2-) metastatic breast cancer (MBC). Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-21-30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
The cyclin-dependent kinase (CDK) 4/6 inhibitor Pal is approved for HR+ HER2- MBC. However, the optimal therapy following Pal progression is unknown. Therefore we conducted this retrospective study to review Pal efficacy and summarize the practice pattern and responses to subsequent treatments post Pal progression.
Methods
We performed a chart review of pts with HR+ HER2- MBC who began Pal treatment at Washington University Siteman Cancer Center between Feb 16, 2015 and July 13, 2016 and collected information on pts demographics, diagnosis, and treatment history. Duration of therapy was used to calculate the progression free survival (PFS) for each regimen. Treatment was considered first-line if administered without any prior systemic therapy or at least 1 year from completion of adjuvant hormonal therapy (HT). Treatments received after progression on 1st line therapy or upon relapse during or within 1 year from the completion of adjuvant HT were considered second-line regimens.
Statistical analyses were performed on SAS software, version 9.4. The Kaplan-Meier method was used to generate time-to-event curves, from which median PFS was calculated. A stratified log-rank test was used for all comparisons, and the P value derived from the comparison was reported.
Results
We completed a chart review for 81 pts (78 female and 3 male; 63 Caucasian, 14 African American, and 4 other races) with HR+ HER2- MBC (68 were ER+PR+, 13 were ER+PR-) who received Pal plus letrozole (n=65) or fulvestrant (n=15) or anastrozole (n=1), with a median age of 62.0 years (range 28.1 - 85.6) at the start of Pal.
The median follow up was 20.0 months (mos) (range 10.8 – 27.9). 25 pts were still on Pal treatment. The median PFS on Pal was 19.9 mos in the first-line setting (n=20), compared to 12.1 mos and 4.4 mos in the second-line (n=14) and subsequent lines (n=47), respectively (p=0.0287). Among the 54 pts who progressed on Pal, 38 moved on to the next treatment. 20 pts received chemotherapy and 16 pts received HT or a HT combination. 2 pts received fulvestrant plus Pal upon progression on letrozole plus Pal, and treatment was still ongoing at 4 mos and 7 mos of follow up, respectively. The most common treatments post Pal were single-agent capecitabine (Cape) (n=9) and the combination of exemestane (Exe) and everolimus (Eve) (n=8). The median PFS was 4.7 mos with Cape compared to 8.4 mos with Exe and Eve (p=0.60). The median PFS was 4.7 mos for the 20 pts who received chemo, whereas the median PFS was 4.9 mos with subsequent HT (n=16) (p=0.75).
Conclusion
Pal plus letrozole or fulvestrant is effective for the treatment of HR+ HER2- MBC, with activity observed beyond the 1st and 2nd line treatment settings. The PFS of Pal observed in this single center retrospective study is consistent with that of published data. Single-agent cape or the Exe and Eve combination were common treatment choices following progression on Pal. Although the study is limited by its small sample size, the median PFS of 8.4 mos with Exe and Eve indicates its potential efficacy in the setting of Pal progression. Additional pts and followup data will be presented.
Citation Format: Xi J, Oza A, Thomas S, Naughton M, Ademuyiwa F, Weilbaecher KN, Suresh R, Bose R, Cherian MA, Hernandez-Aya L, Frith A, Peterson LL, Krishnamurthy J, Ma CX. Retrospective review of palbociclib (Pal) efficacy and benefit from subsequent treatments following Pal progression in patients (pts) with hormone receptor positive (HR+) and HER2 negative (HER2-) metastatic breast cancer (MBC) [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-21-30.
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Affiliation(s)
- J Xi
- Washington University School of Medicine, St. Louis, MO
| | - A Oza
- Washington University School of Medicine, St. Louis, MO
| | - S Thomas
- Washington University School of Medicine, St. Louis, MO
| | - M Naughton
- Washington University School of Medicine, St. Louis, MO
| | - F Ademuyiwa
- Washington University School of Medicine, St. Louis, MO
| | | | - R Suresh
- Washington University School of Medicine, St. Louis, MO
| | - R Bose
- Washington University School of Medicine, St. Louis, MO
| | - MA Cherian
- Washington University School of Medicine, St. Louis, MO
| | | | - A Frith
- Washington University School of Medicine, St. Louis, MO
| | - LL Peterson
- Washington University School of Medicine, St. Louis, MO
| | | | - CX Ma
- Washington University School of Medicine, St. Louis, MO
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Peng T, Chen X, Pan Y, Zheng Z, Wei X, Xi J, Zhang J, Gao X, Shang Q. Transcription factor aryl hydrocarbon receptor/aryl hydrocarbon receptor nuclear translocator is involved in regulation of the xenobiotic tolerance-related cytochrome P450 CYP6DA2 in Aphis gossypii Glover. Insect Mol Biol 2017; 26:485-495. [PMID: 28463435 DOI: 10.1111/imb.12311] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The cotton aphid, Aphis gossypii, is one of the most economically important agricultural pests worldwide as it is polyphagous and resistant to many classes of insecticides. Overexpression of the cytochrome P450 monooxygenase (P450) CYP6DA2 has previously been found to be associated with gossypol and spirotetramat tolerance in the cotton aphid. In the present study, the elements located in the promoter region (-357:-343; -250:-241; -113:-104) of CYP6DA2 were shown to control promoter activity, and gossypol induction was observed. We hypothesized that the expression of CYP6DA2 is subject to transcriptional regulation. To investigate the underlying mechanism, we assessed two transcription factors, aryl hydrocarbon receptor (AhR) and aryl hydrocarbon receptor nuclear translocator (ARNT), and found that the abundance of AhR was highly correlated with CYP6DA2 abundance. RNA interference of AhR or ARNT significantly decreased the levels of the target gene as well as those of its counterpart, and both dramatically repressed CYP6DA2 expression. Cotransfection of the ARNT, AhR, or AhR plus ARNT and CYP6DA2 promoter constructs elevated CYP6DA2 promoter activity, with the AhR plus ARNT cotransfection being the most effective. Thus, these elements located in the promoter were responsible for CYP6DA2 transcription, and CYP6DA2 expression was regulated by the transcription factors AhR and ARNT.
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Affiliation(s)
- T Peng
- College of Plant Science, Jilin University, Changchun, China
| | - X Chen
- Department of Entomology, China Agricultural University, Beijing, China
| | - Y Pan
- College of Plant Science, Jilin University, Changchun, China
| | - Z Zheng
- College of Plant Science, Jilin University, Changchun, China
| | - X Wei
- College of Plant Science, Jilin University, Changchun, China
| | - J Xi
- College of Plant Science, Jilin University, Changchun, China
| | - J Zhang
- College of Plant Science, Jilin University, Changchun, China
| | - X Gao
- Department of Entomology, China Agricultural University, Beijing, China
| | - Q Shang
- College of Plant Science, Jilin University, Changchun, China
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Pan Y, Zhu E, Gao X, Nauen R, Xi J, Peng T, Wei X, Zheng C, Shang Q. Novel mutations and expression changes of acetyl-coenzyme A carboxylase are associated with spirotetramat resistance in Aphis gossypii Glover. Insect Mol Biol 2017; 26:383-391. [PMID: 28370744 DOI: 10.1111/imb.12300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Acetyl-coenzyme A carboxylase (ACC) catalyses the carboxylation of acetyl-coenzyme A (acetyl-CoA) to produce malonyl-CoA during the de novo synthesis of fatty acids. Spirotetramat, an inhibitor of ACC, is widely used to control a range of sucking insects, including the Aphis gossypii. In the present study, Reverse transcription quantitative real-time PCR (RT-qPCR) results demonstrated that ACC was significantly overexpressed in a laboratory-selected spirotetramat-resistant strain compared with the susceptible strain. ACC RNA interference significantly suppressed fecundity and led to cuticle formation deficiencies in resistant adults and nymphs compared with the control. The full-length ACC gene was sequenced from both resistant and susceptible cotton aphids, and a strong association was found between spirotetramat resistance and 14 amino acid substitutions in the biotin carboxylase domain and carboxyl transferase domain of the ACC gene. Furthermore, ACC activity was higher in resistant aphids than in the susceptible strain, and ACC in the resistant aphids exhibited significant insensitivity to spirotetramat and spirotetramat-enol. The results indicate that the overexpressed insensitive (mutated) ACC target played an important role in the high levels of spirotetramat resistance observed here. This association of amino acid substitution with resistance is the first report of a potential target site mechanism affecting spirotetramat in the cotton aphid.
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Affiliation(s)
- Y Pan
- College of Plant Science, Jilin University, Changchun, China
| | - E Zhu
- College of Plant Science, Jilin University, Changchun, China
| | - X Gao
- Department of Entomology, China Agricultural University, Beijing, China
| | - R Nauen
- Bayer CropScience AG, R&D Pest Control Biology, Monheim, Germany
| | - J Xi
- College of Plant Science, Jilin University, Changchun, China
| | - T Peng
- College of Plant Science, Jilin University, Changchun, China
| | - X Wei
- College of Plant Science, Jilin University, Changchun, China
| | - C Zheng
- College of Plant Science, Jilin University, Changchun, China
| | - Q Shang
- College of Plant Science, Jilin University, Changchun, China
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Ye C, Luo J, Wang X, Xi J, Pan Y, Chen J, Yang X, Li G, Sun Q, Yang J. Development of a peptide ELISA to discriminate vaccine-induced immunity from natural infection of hepatitis A virus in a phase IV study. Eur J Clin Microbiol Infect Dis 2017. [PMID: 28631170 DOI: 10.1007/s10096-017-3040-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Hepatitis A virus (HAV) is a highly infectious agent that causes acute liver disease. The infection can trigger the production of antibodies against the structural and non-structural proteins of HAV. Nonetheless, vaccination with an HAV vaccine leads to the production of a primary antibody against the structural proteins. Because the non-structural proteins are only produced during active virus replication, there is no or very little antibody production against the non-structural proteins. However, the current commercial immunoassay cannot distinguish between antibodies produced during natural infection and those from vaccination against HAV. In our study, six immune-dominant epitopes from the non-structural proteins were designed, synthesized, linked together and cloned into pGEX-5X-1 plasmid. The recombinant protein was expressed in E. coli and purified by Ni2+-coated magnetic agarose beads. Then the purified recombinant protein was used as an ELISA antigen to detect antibodies for HAV non-structural proteins in serum samples. Seventy-seven attenuated and 89 inactivated vaccinated samples collected from our previous phase IV study of HAV vaccines were detected by peptide ELISA developed in this study. The mean OD450 value for the vaccination samples and acute infection samples were 0.529 (0.486 for the attenuated group and 0.567 for the inactivated group) and 1.187, respectively. According to the receiver operating characteristic (ROC) curve, the sensitivity and specificity of the peptide ELISA were 93.80% and 91.00%, respectively. This peptide ELISA was confirmed to discriminate vaccine-induced immunity from natural infection of HAV in a phase IV study with high sensitivity and specificity.
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Affiliation(s)
- C Ye
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China.,Kunming Medical University, Kunming, 650500, People's Republic of China
| | - J Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China.,Kunming Medical University, Kunming, 650500, People's Republic of China
| | - X Wang
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - J Xi
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - Y Pan
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - J Chen
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - X Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - G Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China
| | - Q Sun
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China. .,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China.
| | - J Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China. .,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases, Kunming, 650118, People's Republic of China.
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He X, Li L, Xu H, Xi J, Cao X, Xu H, Rong S, Dong Y, Wang C, Chen R, Xu J, Gao X, Xu Z. A rice jacalin-related mannose-binding lectin gene, OsJRL, enhances Escherichia coli viability under high salinity stress and improves salinity tolerance of rice. Plant Biol (Stuttg) 2017; 19:257-267. [PMID: 27718311 DOI: 10.1111/plb.12514] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Accepted: 10/05/2016] [Indexed: 05/19/2023]
Abstract
Salinity, which is one of the most common abiotic stresses, may severely affect plant productivity and quality. Although plant lectins are thought to play important roles in plant defense signaling during pathogen attack, little is known about the contribution of plant lectins to stress resistance. We cloned and functionally characterized a rice jacalin-related mannose-binding lectin gene, OsJRL, from rice 'Nipponbare'. We analyzed the expression patterns of OsJRL under various stress conditions in rice. Furthermore, we overexpressed OsJRL in Escherichia coli and rice. The cDNA of OsJRL contained a 438 bp open reading frame, which encodes a polypeptide of 145 amino acids. OsJRL was localized in the nucleus and cytoplasm. Real time PCR analyses revealed that OsJRL expression showed tissue specificity in rice and was upregulated under diverse stresses, namely salt, drought, cold, heat and abscisic acid treatments. Overexpression of OsJRL in E. coli enhanced cell viability and dramatically improved tolerance of high salinity. Overexpression of OsJRL in rice also enhanced salinity tolerance and increased the expression levels of a number of stress-related genes, including three LEA (late embryogenesis abundant proteins) genes (OsLEA19a, OsLEA23 and OsLEA24), three Na+ transporter genes (OsHKT1;3, OsHKT1;4 and OsHKT1;5) and two DREB genes (OsDREB1A and OsDREB2B). Based on these results, we suggest that OsJRL plays an important role in cell protection and stress signal transduction.
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Affiliation(s)
- X He
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - L Li
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - H Xu
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - J Xi
- Biogas Institute of Ministry of Agriculture, Chengdu, China
| | - X Cao
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - H Xu
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - S Rong
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - Y Dong
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - C Wang
- Meishan Agricultural Bureau, Meishan, China
| | - R Chen
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - J Xu
- Crop Research Institute, Chengdu Academy of Agricultural and Forestry Sciences, Chengdu, China
| | - X Gao
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
| | - Z Xu
- Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Rice Institute of Sichuan Agricultural University, Chengdu, China
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Wei M, Chen Y, Xi J, Ru S, Ji M, Zhang D, Fang Q, Tang B. Discovery of natural mouse serum derived HIV-1 entry inhibitor(s). Acta Virol 2016; 60:404-409. [PMID: 27928921 DOI: 10.4149/av_2016_04_404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Among rationally designed human immunodeficiency virus 1 (HIV-1) inhibitors, diverse natural factors have showed as potent anti-HIV activity in human blood. We have discovered that the boiled supernatant of healthy mouse serum could suppress HIV-1 entry, and exhibited reduced inhibitory activity after trypsin digestion. Further analysis demonstrated that only the fraction containing 10-25 K proteins could inhibit HIV-1 mediated cell-cell fusion. These results suggest that the 10-25 K protein(s) is novel natural HIV-1 entry inhibitor(s). Our findings provide important information about novel natural HIV entry inhibitors in mouse serum.
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Zhan C, Yan L, Wang L, Jiang W, Zhang Y, Xi J, Jin Y, Chen L, Shi Y, Lin Z, Wang Q. Landscape of expression profiles in esophageal carcinoma by The Cancer Genome Atlas data. Dis Esophagus 2016; 29:920-928. [PMID: 26402921 DOI: 10.1111/dote.12416] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, we explored the gene and microRNA (miRNA) expressions profile of esophageal carcinoma. The expression data for messenger RNAs and miRNAs in normal and cancerous esophageal tissues were obtained from the Cancer Genome Atlas database and then the differentially expressed genes and miRNAs were identified. As a result, we identified 2962 genes and 45 miRNAs differentially expressed in esophageal carcinoma compared with normal esophageal tissues. Subsequently, the altered gene functions and signaling pathways were investigated using gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, and these differentially expressed genes were significantly enriched in the cell cycle, cell migration, mitogen-activated protein kinase (MAPK) and toll-like receptor signaling pathway, and so on. Then the regulatory relationships between the differentially expressed miRNAs and genes were examined with Targetscan and Miranda, and the potential target sites of transcription factors (TFs) in the promoter regions of these miRNAs and genes were identified using the TRANSFAC database. Finally the TF-miRNA-gene network in esophageal cancer was established, summarizing the regulatory links among the TFs, differentially expressed miRNAs and differentially expressed genes. Factors such as core promoter-binding protein (CPBP), nuclear factor of activated T-cells 1 (NFAT-1), miR-30c-5p, were located in the central hub of this network, highlighting their vital roles in esophageal tumorigenesis. These findings may extend our understanding of the molecular mechanisms underlying esophageal carcinoma and promote new perspectives for prevention, diagnosis and treatment.
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Affiliation(s)
- C Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - L Yan
- Department of Radiation Oncology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - L Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - W Jiang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Zhang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - J Xi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Jin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - L Chen
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Shi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Z Lin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Q Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Peng T, Pan Y, Gao X, Xi J, Zhang L, Yang C, Bi R, Yang S, Xin X, Shang Q. Cytochrome P450 CYP6DA2 regulated by cap 'n'collar isoform C (CncC) is associated with gossypol tolerance in Aphis gossypii Glover. Insect Mol Biol 2016; 25:450-9. [PMID: 27005728 DOI: 10.1111/imb.12230] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cotton plants accumulate phytotoxins, such as gossypol and related sesquiterpene aldehydes, to resist insect herbivores. The survival of insects exposed to toxic secondary metabolites depends on the detoxification metabolism mediated by limited groups of cytochrome P450. Gossypol has an antibiotic effect on Aphis gossypii, and as the concentrations of gossypol were increased in the present study, the mortality of cotton aphids increased from 4 to 28%. The fecundity of the cotton aphids exposed to gossypol was also significantly reduced compared with the control. The transcriptional levels of CYP6DA2 in cotton aphids were significantly induced when exposed to gossypol, and knockdown of the CYP6DA2 transcripts by RNA interference (RNAi) significantly increased the toxicity of gossypol to cotton aphids. To further understand the gossypol regulatory cascade, the 5'-flanking promoter sequences of CYP6DA2 were isolated with a genome walker, and the promoter was very active and was inducible by gossypol. Co-transfection of the cap 'n' collar isoform C (CncC) and CYP6DA2 promoters dramatically increased the expression of CYP6DA2, and suppression of the CncC transcripts by RNAi significantly decreased the expression levels of CYP6DA2, and significantly increased the toxicity of gossypol to cotton aphids. Thus, the transcriptional regulation of CYP6DA2 involved the transcriptional factor CncC.
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Affiliation(s)
- T Peng
- College of Plant Science, Jilin University, Changchun, China
| | - Y Pan
- College of Plant Science, Jilin University, Changchun, China
| | - X Gao
- Department of Entomology, China Agricultural University, Beijing, China
| | - J Xi
- College of Plant Science, Jilin University, Changchun, China
| | - L Zhang
- Department of Entomology, China Agricultural University, Beijing, China
| | - C Yang
- College of Plant Science, Jilin University, Changchun, China
| | - R Bi
- College of Plant Science, Jilin University, Changchun, China
- Department of Entomology, Jilin Agricultural University, Changchun, China
| | - S Yang
- College of Plant Science, Jilin University, Changchun, China
| | - X Xin
- College of Plant Science, Jilin University, Changchun, China
| | - Q Shang
- College of Plant Science, Jilin University, Changchun, China
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Wang H, Feng M, Shen Y, Jiang W, Xi J, Tan L, Wang Q. P-277A SIMPLE AND SAFE METHOD TO PREOPERATIVELY LOCATE SMALL PERIPHERAL PULMONARY NODULES THAT DO NOT INVOLVE THE VISCERAL PLEURA. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lin Z, Xi J, Xu S, Jiang W, Wang Q. F-161SEMIPRONE POSITION FOR UNIPORTAL VIDEO-ASSISTED THORACIC SURGERY LOBECTOMY. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xi J, Yue J, Yang Z. Expression profiles of retinoic acid synthetases ALDH1As and metabolic enzymes CYP26s in adult and embryonic zebrafish (Danio rerio). Genet Mol Res 2015; 14:3948-56. [DOI: 10.4238/2015.april.27.9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Xi J, Jiang W, Lu S, Wang Q. P-151 * SOLID COMPONENT AND TUMOUR SIZE SIGNIFICANTLY CORRELATE WITH RECURRENCE IN STAGE IB PULMONARY ADENOCARCINOMA. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Furuse M, Miyatake SI, Miyata T, Yoritsune E, Kawabata S, Kuroiwa T, Karajannis MA, Fisher MJ, Milla SS, Cohen KJ, Legault G, Wisoff JH, Harter DH, Hartnett E, Merkelson A, Bloom MC, Dhall G, Jones D, Korshunov A, Pfister S, Eberhart CG, Zagzag D, Allen JC, Chinot O, Wick W, Mason W, Henriksson R, Saran F, Nishikawa R, Hilton M, Abrey L, Cloughesy T, Field KM, Simes J, Nowak AK, Hovey E, Wheeler H, Cher L, Brown C, Livingstone A, Sawkins K, Rosenthal MA, McCrea HJ, Kesavabhotla K, Boockvar J, Kleinberg L, Blakeley J, Mikkelsen T, Stevens G, Ye X, Ryu S, Desideri S, Desai B, Giranda V, Grossman S, Badruddoja MA, Pazzi M, Stea B, Lefferts P, Contreras N, Wallen K, Shah R, Rance N, Schroeder K, Sanan A, Kut C, Raza S, Liang W, Abutaleb A, Xi J, Mavadia J, Ye X, Guerrero-Cazares H, McVeigh E, Li X, Quinones-Hinojosa A, Sloan AE, Reese J, Rogers LR, Embree H, Lazarus HM, Fung H, Kane D, Dropulic B, Gerson SL, Tsung GE, Green SD, Lai A, Green RM, Filka E, Cloughesy TF, Nghiemphu PL, Saito R, Yamashita Y, Sonoda Y, Kanamori M, Kumabe T, Tominaga T, Mohammadi AM, Chao ST, Peereboom DM, Barnett GH, Suh JH, Brewer C, Vogelbaum MA, Desjardins A, Peters KB, Herndon JE, Bailey LA, Alderson LM, Ranjan T, Sampson JH, Friedman AH, Bigner DD, Friedman HS, Vredenburgh JJ, Kaley TJ, Pentsova E, Omuro A, Mellinghoff I, Nolan C, Gavrilovic I, DeAngelis LM, Holland E, Lacouture ME, Ludwig E, Lassman AB, Shih KC, Bacha J, Brown DM, Garner WJ, Schwartz R, Burris HA, Shih K, Rosenblatt P, Chowdhary S, Weir A, Shepard G, Shastry M, Griner P, Hainsworth J, Sloan AE, Nock CJ, Kerstetter A, Supko J, Ye X, Barnholtz-Sloan JS, Miller R, Rich J, Takebe N, Prados M, Grossman S. CLIN-ONGOING CLINICAL TRIALS. Neuro Oncol 2012; 14:vi101-vi105. [PMCID: PMC3488786 DOI: 10.1093/neuonc/nos232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023] Open
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Xi J, Zhang L, Wang L, Miao X, Liu Y, Tian X, Bu G, Lu Q, Deng R. Establishment of a stable mouse FcγRIII COS7 cell line exhibiting native receptor activity. Journal of Applied Animal Research 2011. [DOI: 10.1080/09712119.2011.558685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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He X, Lu X, Hu J, Xi J, Zhou D, Shang H, Liu L, Zhou H, Yan B, Yu L, Hu F, Liu Z, He L, Yao X, Xu Y. H63D polymorphism in the hemochromatosis gene is associated with sporadic amyotrophic lateral sclerosis in China. Eur J Neurol 2011; 18:359-361. [PMID: 20642794 DOI: 10.1111/j.1468-1331.2010.03158.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND PURPOSE The H63D polymorphism in the hemochromatosis (HFE) gene has been reported as a risk factor for amyotrophic lateral sclerosis (ALS) in Europe and America, but no data have been reported for Asia. Here, we investigated the possible association between H63D and sporadic ALS (sALS) in a Chinese Han population. METHODS A total of 195 individuals with sALS from three centers in China and 405 unrelated healthy controls were recruited. All subjects were genotyped by restriction fragment length polymorphism (RFLP) analysis. RESULTS Sporadic ALS was significantly related to the H63D polymorphism in heterozygous carriers (odds ratio 3.10, 95%CI: 1.49-6.47, P=0.002). CONCLUSIONS The HFE H63D polymorphism may contribute to the development of sALS in Chinese.
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Affiliation(s)
- X He
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - X Lu
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province
| | - J Hu
- Department of Neurology, Third Hospital of Hebei Medical University, Sijiazhuang, Hebei Province, China
| | - J Xi
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - D Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - H Shang
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - L Liu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - H Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - B Yan
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - L Yu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - F Hu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - Z Liu
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province
| | - L He
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
| | - X Yao
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province
| | - Y Xu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province
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Hu FY, Xi J, Guo J, Yu LH, Liu L, He XH, Liu ZL, Zou XY, Xu YM. Association of the glucocerebrosidase N370S allele with Parkinson's disease in two separate Chinese Han populations of mainland China. Eur J Neurol 2011; 17:1476-8. [PMID: 20528910 DOI: 10.1111/j.1468-1331.2010.03097.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND PURPOSE Mutations in the glucocerebrosidase (GBA) gene have been implicated in the development of Parkinson's disease (PD). However, recent screenings for GBA mutations in PD subjects from different ethnic populations have yielded contradictory results. METHODS We performed a case-control study to look for a possible association between PD and the GBA N370S allele involving 628 subjects in two separate Chinese Han populations from mainland China. All subjects were successfully genotyped by polymerase chain reaction-restriction fragment length polymorphism analysis. RESULTS A total of six patients with PD and two control subjects carried the N370S allele. Although PD cases (1.8%) had an increased frequency of N370S compared to controls (0.7%), the difference was not statistically significant (P = 0.290). However, when PD cases were stratified by age at onset, a higher frequency of N370S in late-onset PD (LOPD) cases (3.2%) compared to controls was observed. CONCLUSIONS Our results suggest that the N370S allele might be associated with LOPD in Chinese Han population and that this phenomenon should be further examined in a larger study.
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Affiliation(s)
- F-Y Hu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
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Hong D, Wang Z, Zhang W, Xi J, Lu J, Luan X, Yuan Y. A series of Chinese patients with desminopathy associated with six novel and one reported mutations in the desmin gene. Neuropathol Appl Neurobiol 2011; 37:257-70. [DOI: 10.1111/j.1365-2990.2010.01112.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Hu FY, Hu WB, Liu L, Yu LH, Xi J, He XH, Zhu MR, Liu ZL, Xu YM. Lack of replication of a previously reported association between polymorphism in the 3'UTR of the alpha-synuclein gene and Parkinson's disease in Chinese subjects. Neurosci Lett 2010; 479:31-3. [PMID: 20478361 DOI: 10.1016/j.neulet.2010.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 05/01/2010] [Accepted: 05/08/2010] [Indexed: 02/05/2023]
Abstract
Recent studies have implicated polymorphisms in the 3' untranslated region (3'UTR) of the alpha-synuclein (SNCA) gene in the development of Parkinson's disease (PD). Single nucleotide polymorphism (SNP) rs356165 is one of polymorphisms located in the 3'UTR and its association with PD has been reported but remains controversial. Herein, we conducted a case-control study to further evaluate the possible association between SNP rs356165 and PD in Chinese. All subjects (330 PD patients and 300 normal controls) were successfully genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. No statistically significant difference in genotype frequency between cases and controls was observed (P=0.863), suggesting no association of SNP rs356165 with PD in our population. Thus, it may be premature to conclude an association between the 3'UTR of the SNCA gene and PD, and this association should be further examined in different ethnic populations.
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Affiliation(s)
- F-Y Hu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
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Curtis JR, Arora T, Xi J, Silver A, Allison JJ, Chen L, Saag KG, Schenck A, Westfall AO, Colón-Emeric C. Do physicians within the same practice setting manage osteoporosis patients similarly? Implications for implementation research. Osteoporos Int 2009; 20:1921-7. [PMID: 19319619 PMCID: PMC2766011 DOI: 10.1007/s00198-009-0900-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [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: 11/28/2008] [Accepted: 02/03/2009] [Indexed: 10/21/2022]
Abstract
UNLABELLED Using data from long-term glucocorticoid users and long-term care residents, we evaluated osteoporosis prescribing patterns related to physician behavior and common practice settings. We found no significant clustering effect for common practice setting, suggesting that osteoporosis quality improvement (QI) efforts may be able to ignore this factor in designing QI interventions. INTRODUCTION Patients' receipt of prescription therapies are significantly influenced by their physician's prescribing patterns. If physicians in the same practice setting influence one another's prescribing, evidence implementation interventions must consider targeting the practice as well as individual physicians to achieve maximal success. METHODS We examined receipt of osteoporosis treatment (OP Rx) from two prior evidence implementation studies: long-term glucocorticoid (GC) users and nursing home (NH) residents with prior fracture or osteoporosis. Common practice setting was defined as doctors practicing at the same address or in the same nursing home. Alternating logistic regression evaluated the relationship between OP Rx, common practice setting, and individual physician treatment patterns. RESULTS Among 6,281 GC users in 1,296 practices, the proportion receiving OP Rx in each practice was 6-100%. Among 779 NH residents in 66 nursing homes, the proportion in each NH receiving OP Rx was 0-100%. In both, there was no significant relationship between receipt of OP Rx and common practice setting after accounting for treatment pattern of individual physicians. CONCLUSION Physicians practicing together were not more alike in prescribing osteoporosis medications than those in different practices. Osteoporosis quality improvement may be able to ignore common practice settings and maximize statistical power by targeting individual physicians.
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Affiliation(s)
- J R Curtis
- Center for Education and Research on Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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