1
|
Zheng L, Jiang YL, Fei J, Cao P, Zhang C, Xie GF, Wang LX, Cao W, Fu L, Zhao H. Circulatory cadmium positively correlates with epithelial-mesenchymal transition in patients with chronic obstructive pulmonary disease. Ecotoxicol Environ Saf 2021; 215:112164. [PMID: 33756289 DOI: 10.1016/j.ecoenv.2021.112164] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 12/28/2020] [Revised: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Environmental cadmium (Cd) exposure can cause several pulmonary diseases. Epithelial-mesenchymal transition (EMT) involved in the process of chronic obstructive pulmonary disease (COPD). However, the association between environmental Cd exposure and EMT was unclear in COPD patients. This study aimed to analyze the associations among circulatory Cd, EMT and COPD based on case-control study. Four hundred COPD patients and 400 control subjects were recruited. Circulatory Cd was detected using atomic adsorption spectrometer. MicroRNA-30 (miR-30) was measured by RT-PCR and the markers of pulmonary EMT were evaluated through western blotting. Circulatory Cd concentration was increased and serum miR-30 was decreased in COPD patients. Circulatory Cd was inversely associated with pulmonary function in COPD patients. Moreover, serum miR-30 was gradually decreased in parallel with FEV1 in COPD patients. Meanwhile, there was a negative association between serum miR-30 and circulatory Cd in COPD patients. Further analysis found that E-cadherin, one of epithelial biomarkers, was reduced in lung tissues of COPD patients with higher circulatory Cd. On the contrary, pulmonary N-cadherin, Vimentin and α-SMA, three of mesenchymal biomarkers, were increased in COPD patients with higher circulatory Cd. In vitro experiments revealed that Cd exposure repressed miR-30 levels and promoted EMT in BEAS-2B cells. Our results provide evidence that miR-30 reduction contributing to pulmonary EMT may involve in the process of Cd-induced COPD.
Collapse
Affiliation(s)
- Ling Zheng
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Ya-Lin Jiang
- The Bozhou People's Hospital, Bozhou 236800, China
| | - Jun Fei
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Peng Cao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Chen Zhang
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Guo-Fang Xie
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Li-Xiang Wang
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Wei Cao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Lin Fu
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China; Department of Toxicology, Anhui Medical University, Hefei 230032, China.
| | - Hui Zhao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
| |
Collapse
|
2
|
Xie GF, Wang YB, Huang ZD, Zhang MS. Quality attributes of fresh common bean during storage as postharvest treatment with 1-MCP. International Journal of Food Properties 2020. [DOI: 10.1080/10942912.2020.1826514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Guo-Fang Xie
- Food and Pharmaceutical Engineering, Institute/Guizhou Engineering Research Center for Fruit Processing, Guiyang University, Guiyang, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering,Guizhou University, Guiyang, China
| | - Yu-Bo Wang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering,Guizhou University, Guiyang, China
| | - Zhi-Duan Huang
- Department of Biochemical Engineering, Guiyang Vocational and Technical College, Guiyang, Guizhou, China
| | - Ming-Sheng Zhang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering,Guizhou University, Guiyang, China
| |
Collapse
|
3
|
Zhao T, He CY, Ma SY, Zhang KW, Peng XY, Xie GF, Zhong JX. A new phase of phosphorus: the missed tricycle type red phosphorene. J Phys Condens Matter 2015; 27:265301. [PMID: 26053470 DOI: 10.1088/0953-8984/27/26/265301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We predict a new two-dimensional allotrope of phosphorus, which we call red phosphorene, by restructuring the segments of the previously proposed blue and black phosphorenes. Its atomic and electronic structures as well as the thermodynamic and dynamic stabilities are systematically studied by first-principles calculations. The results indicate that the red phosphorene is dynamically stable and possesses remarkably thermodynamical stability comparable to that of the black one. Because of the sp(3)-hybridization and the formation of a localized lone pair, red phosphorene is a semiconductor with an indirect band gap of about 1.96 eV, which can be effectively modulated by in-plane strains due to its wave-like configuration. We find that the red, black and blue phosphorenes show evident distinction in their layer thicknesses, surface work functions, and possible colors, based on which one can distinguish them in future experiments.
Collapse
Affiliation(s)
- T Zhao
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, People's Republic of China. Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, Xiangtan University, Xiangtan 411105, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
4
|
Li JW, Yang LW, Zhou ZF, Liu XJ, Xie GF, Pan Y, Sun CQ. Mechanically stiffened and thermally softened Raman modes of ZnO crystal. J Phys Chem B 2010; 114:1648-51. [PMID: 20055382 DOI: 10.1021/jp909952c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An analytical form connecting the energy shift of Raman modes directly to the bonding identities (order, nature, length, energy) of a specimen and the response of the bonding identities to the applied stimuli of temperature and pressure was presented for a deeper understanding of the atomistic origin of the ZnO Raman shift. Theoretical reproduction based on the BOLS correlation theory [Sun, C. Q. Prog. Solid State Chem. 2007, 35, 1] and the local bond average (LBA) approach [Sun, C. Q. Prog. Mater. Sci. 2009, 54, 179] of the measurements revealed that the thermally softened ZnO Raman modes arise from bond expansion and bond weakening due to vibration and that the pressure-stiffened Raman modes result from bond compression and bond strengthening due to mechanical work hardening. The developed approach could be useful in generalizing the lattice dynamics directly to the process of vibration and relaxation of a representative bond of the specimen under external stimuli.
Collapse
Affiliation(s)
- J W Li
- Institute for Quantum Engineering and Micro-Nano Energy Technology, Key Laboratory of Low-Dimensional Materials and Application Technologies, and Faculty of Materials and Optoelectronic Physics, Xiangtan University, Hunan 411105, China
| | | | | | | | | | | | | |
Collapse
|
5
|
Xie GF, Li SL, Wanc ZZ. Role of thiol-disulfide exchange in insulin binding to its receptor. Sci China B 1992; 35:429-36. [PMID: 1590918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The effects of reduction by DTT, oxidation by DTNB and treatment with NEM on the thiol contents and insulin binding to its receptor in mice liver membranes were studied. Reduction with DTT leads to a parallel increase in the thiol content and the specific binding of insulin to the membrane. Scatchard analysis of the results shows little change in the number of binding sites but a twofold increase of the binding constant. Washing the membrane with bound insulin by a DTT containing buffer results in a more marked increase in the release of bound insulin than washing with buffer alone, suggesting that part of the insulin is bound to its receptor by covalent disulfide linkages through a thiol-disulfide exchange reaction and reduction with DTT leads to a marked increase in this "disulfide-linked" insulin. Treatment with DTNB or NEM of the DTT-reduced membrane seems to reverse the effect of DTT reduction, although the reaction of the untreated membrane with DTNB or NEM had little or no effect on the specific binding of insulin. It is suggested that initially, part of the thiols responsible for the exchange reaction may not be available for reaction with DTNB and reduction with DTT generates further thiols leading to increased specific binding in general and increased insulin binding to the receptor through covalent disulfide linkages in particular.
Collapse
Affiliation(s)
- G F Xie
- Institute of Biophysics, Academia Sinica, Beijing, PRC
| | | | | |
Collapse
|
6
|
Pan XY, Li FQ, Yu RJ, Xie GF, Wang H, Zhao LY, Zhang Q. [Experimental chemotherapy of human gastric cancer cell lines in vitro and in nude mice]. Zhonghua Zhong Liu Za Zhi 1988; 10:15-8. [PMID: 2843330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cytotoxic effects of allyl trisulfide (Alt, a synthetic chemical identical with one of the main active principles of garlic), 5 FU, MMC and DDP on SGC 7901 ( a moderately differentiated human gastric adenocarcinoma cell line) and MGC 803 (a poorly differentiated human gastric mucoadenocarcinoma cell line) had been reported before. In this paper, effects of repeated two doses of each drug and the combination of two drugs on these two cell lines were studied using relative clone-survival test. The inhibitory effects of Alt, MMC alone or combined on MGC tumor in nude mice were observed. No drug resistance was found when any one of the four agents at the same concentration were repeated twice separately at 60 hour interval in vitro. The cytotoxic effect of the repeated two doses was approximately equal to that of the single dose at double concentration. The in vitro test of combinations of two drugs showed that Alt plus MMC or 5 FU plus DDP had markedly synergistic effect on MGC cells; 5 FU plus DDP had markedly synergistic effect on SGC cells. The inhibition test on the growth of MGC tumor in nude mice indicated that the inhibition rates of Alt, MMC alone or combined were 58.3%, 86.3% and 84.3%. The systemic toxic effect of MMC alone was severe, whereas Alt alone or MMC plus Alt showed mild toxicity. For this reason, Alt plus MMC is recommended for clinical trials on poorly differentiated gastric cancer. In addition, for the comparison of in vitro test dose and clinical dose of each drug, the principle of clinical adult dose range (CADR) is proposed.
Collapse
Affiliation(s)
- X Y Pan
- Institute of Basic Medical Sciences, Shandong Academy of Medical Sciences, Jinan
| | | | | | | | | | | | | |
Collapse
|
7
|
Wang XW, Jiang YF, Xie GF, Li FQ, Pan XY. [Establishment of a human pulmonary adenocarcinoma cell line Lu-YePa and its biological characteristics]. Zhonghua Zhong Liu Za Zhi 1987; 9:112-4. [PMID: 3652912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This paper presents the establishment of a human pulmonary adenocarcinoma cell line Lu-YePa and its biological characteristics. The primary cells of Lu-YePa cell line were derived from a twenty six year old patient with poorly differentiated adenocarcinoma of the lung. After 36 days' culture, transfer was made and the cells proliferated steadily and rapidly afterwards. The doubling time was 34.6 hours. Mitotic index reached 49.5% on day 5. Chromosome number was subtriploid with the mode of 62. The large submetacentric marker chromosome was presented in 68% of cells. PAS positive granules were found in the cytoplasm. The study of concanavalin A condensation, electron microscopic observation, heterotransplantation and plating efficiency indicates that Lu-YePa cells are concordant with the human pulmonary adenocarcinoma cells in morphology and biological behavior.
Collapse
Affiliation(s)
- X W Wang
- Sanitary and Antiepidemic Station, Yexian, Shandong
| | | | | | | | | |
Collapse
|
8
|
Xie GF, Tsou CL. Conformational and activity changes during guanidine denaturation of D-glyceraldehyde-3-phosphate dehydrogenase. Biochim Biophys Acta 1987; 911:19-24. [PMID: 3790596 DOI: 10.1016/0167-4838(87)90265-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Changes in intrinsic protein fluorescence of lobster muscle D-glyceraldehyde-3-phosphate dehydrogenase (D-glyceraldehyde-3-phosphate: NAD+ oxidoreductase (phosphorylating), EC 1.2.1.12) have been compared with inactivation of the enzyme during denaturation in guanidine solutions. The holoenzyme is completely inactivated at guanidine concentrations less than 0.5 M and this is accompanied by a red shift of the emission maximum at 335 nm and a marked decrease in intensity of the intrinsic fluorescence. At 0.5 M guanidine, the inactivation is a slow process, with a first-order rate constant of 2.4 X 10(-3) s-1. A further red shift in the emission maximum and a decrease in intensity occur at guanidine concentrations higher than 1.5 M. The emission peak at 410 nm of the fluorescent NAD derivative introduced at the active site of this enzyme (Tsou, C.L. et al. (1983) Biochem. Soc. Trans. 11, 425-429) shows both a red shift and a marked decrease in intensity at the same guanidine concentration required to bring about the inactivation and the initial changes in the intrinsic fluorescence of the holoenzyme. It appears that treatment by low guanidine concentrations leads to both complete inactivation and perturbation of the active site conformation and that a tryptophan residue is situated at or near the active site.
Collapse
|