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Wu DD, Xu YM, Chen DJ, Liang ZL, Chen XL, Hylkema MN, Rots MG, Li SQ, Lau ATY. Ubiquitin carboxyl-terminal hydrolase isozyme L1/UCHL1 suppresses epithelial-mesenchymal transition and is under-expressed in cadmium-transformed human bronchial epithelial cells. Cell Biol Toxicol 2021; 37:497-513. [PMID: 33040242 DOI: 10.1007/s10565-020-09560-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/23/2020] [Indexed: 02/05/2023]
Abstract
Cadmium (Cd), a highly toxic heavy metal, is widespreadly distributed in the environment. Chronic exposure to Cd is associated with the development of several diseases including cancers. Over the decade, many researches have been carried on various models to examine the acute effects of Cd; yet, limited knowledge is known about the long-term Cd exposure, especially in the human lung cells. Previously, we showed that chronic Cd-exposed human bronchial epithelial BEAS-2B cells exhibited transformed cell properties, such as anchorage-independent growth, augmented cell migration, and epithelial-mesenchymal transition (EMT). To study these Cd-transformed cells more comprehensively, here, we further characterized their subproteomes. Overall, a total of 63 differentially expressed proteins between Cd-transformed and passage-matched control cells among the five subcellular fractions (cytoplasmic, membrane, nuclear-soluble, chromatin-bound, and cytoskeletal) were identified by mass spectrometric analysis and database searching. Interestingly, we found that the thiol protease ubiquitin carboxyl-terminal hydrolase isozyme L1 (UCHL1) is one of the severely downregulated proteins in the Cd-transformed cells. Notably, the EMT phenotype of Cd-transformed cells can be suppressed by forced ectopic expression of UCHL1, suggesting UCHL1 as a crucial modulator in the maintenance of the proper differentiation status in lung epithelial cells. Since EMT is considered as a critical step during malignant cell transformation, finding novel cellular targets that can antagonize this transition may lead to more efficient strategies to inhibit cancer development. Our data report for the first time that UCHL1 may play a function in the suppression of EMT in Cd-transformed human lung epithelial cells, indicating that UCHL1 might be a new therapeutic target for chronic Cd-induced carcinogenesis. Graphical abstract.
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Affiliation(s)
- Dan-Dan Wu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713, GZ, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, 9713, GZ, Groningen, The Netherlands
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - De-Ju Chen
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Zhan-Ling Liang
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Xu-Li Chen
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Machteld N Hylkema
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713, GZ, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, 9713, GZ, Groningen, The Netherlands
| | - Marianne G Rots
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713, GZ, Groningen, The Netherlands
| | - Sheng-Qing Li
- Department of Pulmonary and Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
| | - Andy T Y Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China.
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Jiang L, Wu Y, Zhang Y, Lu D, Yan K, Gao J. Effects of intraoperative lung-protective ventilation on clinical outcomes in patients with traumatic brain injury: a randomized controlled trial. BMC Anesthesiol 2021; 21:182. [PMID: 34182951 PMCID: PMC8236740 DOI: 10.1186/s12871-021-01402-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 06/15/2021] [Indexed: 11/11/2022] Open
Abstract
Background Secondary lung injury is the most common non-neurological complication after traumatic brain injury (TBI). Lung-protective ventilation (LPV) has been proven to improve perioperative oxygenation and lung compliance in some critical patients. This study aimed to investigate whether intraoperative LPV could improve respiratory function and prevent postoperative complications in emergency TBI patients. Methods Ninety TBI patients were randomly allocated to three groups (1:1:1): Group A, conventional mechanical ventilation [tidal volume (VT) 10 mL/kg only]; Group B, small VT (8 mL/kg) + positive end-expiratory pressure (PEEP) (5 cmH2O); and Group C, small VT (8 mL/kg) + PEEP (5 cmH2O) + recruitment maneuvers (RMs). The primary outcome was the incidence of total postoperative pulmonary complications; Secondary outcomes were intraoperative respiratory mechanics parameters and serum levels of brain injury markers, and the incidence of each postoperative pulmonary and neurological complication. Results Seventy-nine patients completed the final analysis. The intraoperative PaO2 and dynamic pulmonary compliance of Groups B and C were higher than those of Group A (P = 0.028; P = 0.005), while their airway peak pressure and plateau pressure were lower than those of group A (P = 0.004; P = 0.005). Compared to Group A, Groups B and C had decreased 30-day postoperative incidences of total pulmonary complications, hypoxemia, pulmonary infection, and atelectasis (84.0 % vs. 57.1 % vs. 53.8 %, P = 0.047; 52.0 % vs. 14.3 % vs. 19.2 %, P = 0.005; 84.0 % vs. 50.0 % vs. 42.3 %, P = 0.006; 24.0 % vs. 3.6 % vs. 0.0 %, P = 0.004). Moreover, intraoperative hypotension was more frequent in Group C than in Groups A and B (P = 0.007). At the end of surgery, the serum levels of glial fibrillary acidic protein and ubiquitin carboxyl-terminal hydrolase isozyme L1 in Group B were lower than those in Groups A and C (P = 0.002; P < 0.001). The postoperative incidences of neurological complications among the three groups were comparable. Conclusions Continuous intraoperative administration of small VT + PEEP is beneficial to TBI patients. Additional RMs can be performed with caution to prevent disturbances in the stability of cerebral hemodynamics. Trial registration Chinese Clinical Trial Registry (ChiCTR2000038314), retrospectively registered on September 17, 2020.
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Affiliation(s)
- Lulu Jiang
- Department of Anesthesiology, the Second Xiangya Hospital, Central South University, 139# Renmin Central Road, 410011, Changsha, China.,Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Yujuan Wu
- Department of Anesthesiology, Xiangtan Central Hospital, 120# Heping Road, 411100, Xiangtan, China
| | - Yang Zhang
- Department of Anesthesiology, the Second Xiangya Hospital, Central South University, 139# Renmin Central Road, 410011, Changsha, China.,Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Dahao Lu
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Keshi Yan
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Ju Gao
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China.
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