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Wan L, Chen Z, Yang J, Wu G, Xu Y, Cui J, Zhao X. Identification of endoplasmic reticulum stress-related signature characterizes the tumor microenvironment and predicts prognosis in lung adenocarcinoma. Sci Rep 2023; 13:19462. [PMID: 37945620 PMCID: PMC10636162 DOI: 10.1038/s41598-023-45690-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023] Open
Abstract
Lung adenocarcinoma (LUAD) remains one of the most lethal malignancies worldwide, with a high mortality rate and unfavorable prognosis. Endoplasmic reticulum (ER) stress is a key regulator of tumour growth, metastasis, and the response to chemotherapy, targeted therapies and immune response. It acts via responding to misfolded proteins and triggering abnormal activation of ER stress sensors and downstream signalling pathways. Notably, the expression patterns of ER-stress-related-genes (ERSRGs) are indicative of survival outcomes, especially in the context of immune infiltration. Through consensus clustering of prognosis-associated ERSRGs, we delineated two distinct LUAD subtypes: Cluster 1 and Cluster 2. Comprehensive analyses revealed significant disparities between these subtypes in terms of prognosis, immune cell infiltration, and tumor progression. Leveraging the robustness of LASSO regression and Multivariate stepwise regression, we constructed and validated an ER Stress-associated risk signature for LUAD. This signature underwent assessments for its prognostic value, correlation with clinical attributes, and interaction within the tumour immune microenvironment. By integrating this signature with multivariate cox analysis of distinct pathological stages, we devised an enhanced nomogram, validated through various statistical metrics, with an area under the curve for overall survival at 1, 3, and 5 years post-diagnosis being 0.79, 0.80, and 0.81, respectively. In conclusion, our findings introduce a composite signature of 11 pivotal ERSRGs, holding promise as a potent prognostic tool for LUAD, and offering insights for immunotherapeutic and targeted intervention strategies.
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Affiliation(s)
- Li Wan
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China
| | - Zhike Chen
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jian Yang
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gaotian Wu
- Soochow University Laboratory of Cancer Molecular Genetics, Medical College of Soochow University, Suzhou, China
| | - Yao Xu
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jian Cui
- Department of Thoracic Surgery, Wuzhong District People's Hospital, Suzhou, China.
| | - Xueping Zhao
- School of Nursing, Medical College of Soochow University, Suzhou, Jiangsu, China.
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Chen HY, Wu YH, Wei CY, Liao ZY, Wu HT, Chen YC, Pang JHS. Incomplete Recovery from the Radiocontrast-Induced Dysregulated Cell Cycle, Adhesion, and Fibrogenesis in Renal Tubular Cells after Radiocontrast (Iohexol) Removal. Int J Mol Sci 2023; 24:10945. [PMID: 37446141 DOI: 10.3390/ijms241310945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Contrast-induced nephropathy (CIN) is one of the most common causes of acute kidney injury (AKI). However, management is still limited, and the cellular response to radiocontrast removal for CIN remains unclear. This study aimed to explore the latent effects of iohexol in cultured renal tubular cells with or without the removal of iohexol by medium replacement. HK2 renal tubular cells were subcultured 24 h before use in CIN experiments. Three treatment groups were established: the control, a radiocontrast (iohexol)-only group at 75 mg I/mL (I-75), and iohexol exposure for 24 h with culture medium replacement (I-75/M). Cell cycle arrest, fibrogenic mediator assays, cell viability, cell function, and cell-cycle-related protein expression were compared between groups. Iohexol induced numerous changes in HK2 renal tubular cells, such as enlarged cell shape, cell cycle arrest, increased apoptosis, and polyploidy. Iohexol inhibited the expression of cyclins, CDKs, ZO-1, and E-cadherin but conversely enhanced the expression of p21 and fibrosis-related genes, including TGF-β1, CTGF, collagen I, collagen III, and HIF-1α within 60 hr after the exposure. Except for the recovery from cell cycle arrest and cell cycle gene expression, notably, the removal of iohexol by medium replacement could not fully recover the renal tubular cells from the formation of polyploid cells, the adhesion or spreading, or the expression of fibrosis-related genes. The present study demonstrates, for the first time, that iohexol exerts latent cytotoxic effects on cultured renal tubular cells after its removal, suggesting that these irreversible cell changes may cause the insufficiency of radiocontrast reduction in CIN, which is worth investigating further.
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Affiliation(s)
- Hsing-Yu Chen
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan 33378, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yi-Hong Wu
- Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan 33378, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Cheng-Yu Wei
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Zhi-Yao Liao
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Hsiao-Ting Wu
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yung-Chang Chen
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Division of Nephrology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan 33342, Taiwan
| | - Jong-Hwei S Pang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan 33342, Taiwan
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Lin YM, Wu CH, Chu PH, Ouyang P. Cell cycle expression of FLJ25439, a cytokinesis-associated protein, is mediated by D-box recognition and APC/C-Cdc20 regulated degradation. Biochem Biophys Res Commun 2022; 630:151-157. [PMID: 36155061 DOI: 10.1016/j.bbrc.2022.09.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/08/2022] [Accepted: 09/11/2022] [Indexed: 11/26/2022]
Abstract
The midbody is a transient structure forming out of the central spindle at late telophase. Both the midbody and central spindle have important functions ensuring completion of cytokinesis and defects in this process may lead to genetic diseases, including cancer. Thus, understanding the mechanisms that control cytokinesis during mitosis can reveal the key components taking part in some of the processes that promote accurate cell division. Our previous study showed that overexpression of FLJ25439 causes cytokinesis defect with midbody arrest and induces tetraploids with prolonged cell growth/cell cycle progression (Pan et al., 2015). Here, we extend our investigation with regard to the expression profile/regulation and cellular localization/function of FLJ25439 during mitosis/cytokinesis. Using a monoclonal antibody 2A4 we found that FLJ25439 expression is cell cycle-dependent and subjected to APC/C complex regulation. Furthermore, it is a novel substrate for the APC/C-Cdc20 complex and its degradation is proteasome-dependent through D-box recognition during mitotic exit. Immunofluorescence microscopy showed it is distributed at the central spindle and midbody, two structures considered important for completion of cell division, in telophase and cytokinesis, respectively, during cell cycle progression. Depletion of FLJ25439 expression revealed defects in chromosome alignment/segregation and delayed mitosis/cytokinesis progression. We thus conclude that FLJ25439 is a hitherto undiscovered factor involved in cytokinesis regulation.
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Affiliation(s)
- Yen-Ming Lin
- Department of Anatomy, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chu-Han Wu
- Department of Anatomy, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Pao-Hsien Chu
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Pin Ouyang
- Department of Anatomy, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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Yan L, Zhao Z, Wang X, Lyu T, Li J, Qi Y, Wang X, Guo X. Short-term in vitro glutamine restriction differentially impacts the chromosomal stability of transformed and non-transformed cells. Mutagenesis 2020; 35:geaa026. [PMID: 33043986 DOI: 10.1093/mutage/geaa026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 09/10/2020] [Indexed: 11/13/2022] Open
Abstract
Glutamine (Gln) is a non-essential amino acid central for generating building blocks and cellular energy in tumours and rapidly proliferating non-transformed cells. However, the influence of Gln on regulating chromosomal stability of transformed and non-transformed cells remain poorly understand. We hypothesised that Gln is required for maintaining a homeostatic level of chromosomal stability. To this end, transformed cells HeLa and A375 and non-transformed cells NCM460 and HUVEC cells were intervened with varying concentrations of Gln (10, 1, 0.1 and 0.01 mM), with or without cisplatin (0.1 µg/ml), for 24 h. The cytokinesis-block micronucleus (MN) assay was used to determine chromosomal instability (CIN), the extent of which is reflected by the frequency of MN, nucleoplasmic bridge (NPB) and nuclear bud (NB). We demonstrated an unexpected decrease in the spontaneous rate of MN, but not NPB and NB, after Gln restriction in HeLa and A375 cells. Gln restriction reduced cisplatin-induced MN, but not NPB and NB, in HeLa and A375 cells. We further revealed that Gln restriction suppressed the proliferation of HeLa cells with high CIN induced by nocodazole, partially explaining why Gln restriction decreased the frequency of spontaneous and cisplatin-induced MN in transformed cells. In contrast, Gln restriction increased MN and NB, but not NPB, in NCM460 cells. In HUVEC cells, Gln restriction increased MN, NPB and NB. Meanwhile, Gln restriction sensitised NCM460 cells to cisplatin-induced genotoxicity. A similar but more pronounced pattern was observed in HUVEC cells. Collectively, these results suggest that the in vitro influences of Gln metabolism on CIN depend on cellular contexts: Transformed cells require high Gln to fine tune their CIN in an optimal rate to maximise genomic heterogeneity and fitness, whereas non-transformed cells need high Gln to prevent CIN.
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Affiliation(s)
- Ling Yan
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Ziru Zhao
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Xiaoran Wang
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Ting Lyu
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Jianfei Li
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Yanmei Qi
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Xu Wang
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Chenggong District, Kunming, Yunnan, China
- Yunnan Environmental Society, Chenggong District, Kunming, Yunnan, China
| | - Xihan Guo
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Chenggong District, Kunming, Yunnan, China
- Yunnan Environmental Society, Chenggong District, Kunming, Yunnan, China
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Fang JY, Wang PW, Huang CH, Chen MH, Wu YR, Pan TL. Skin aging caused by intrinsic or extrinsic processes characterized with functional proteomics. Proteomics 2016; 16:2718-2731. [PMID: 27459910 DOI: 10.1002/pmic.201600141] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 03/18/2016] [Revised: 06/24/2016] [Accepted: 07/21/2016] [Indexed: 12/27/2022]
Abstract
The skin provides protection against environmental stress. However, intrinsic and extrinsic aging causes significant alteration to skin structure and components, which subsequently impairs molecular characteristics and biochemical processes. Here, we have conducted an immunohistological investigation and established the proteome profiles on nude mice skin to verify the specific responses during aging caused by different factors. Our results showed that UVB-elicited aging results in upregulation of proliferating cell nuclear antigen and strong oxidative damage in DNA, whereas chronological aging abolished epidermal cell growth and increased the expression of caspase-14, as well as protein carbonylation. Network analysis indicated that the programmed skin aging activated the ubiquitin system and triggered obvious downregulation of 14-3-3 sigma, which might accelerate the loss of cell growth capacity. On the other hand, UVB stimulation enhanced inflammation and the risk of skin carcinogenesis. Collectively, functional proteomics could provide large-scale investigation of the potent proteins and molecules that play important roles in skin subjected to both intrinsic and extrinsic aging.
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Affiliation(s)
- Jia-You Fang
- Pharmaceutics Laboratory, Graduate Institute of Natural Products, Chang Gung University, Taoyuan, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Pei-Wen Wang
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Hsun Huang
- Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Mu-Hong Chen
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Psychiatry, College of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yun-Ru Wu
- Graduate Institute of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Tai-Long Pan
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan. .,Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan. .,Liver Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan. .,Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan. .,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.
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