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Mi C, Zhang QL, Sun MJ, Lv Y, Sun QL, Geng SL, Wang TY. Acevaltrate promotes apoptosis and inhibits proliferation by suppressing HIF-1α accumulation in cancer cells. Int Immunopharmacol 2024; 133:112066. [PMID: 38615377 DOI: 10.1016/j.intimp.2024.112066] [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: 01/18/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Acevaltrate is a natural product isolated from the roots of Valeriana glechomifolia F.G.Mey. (Valerianaceae) and has been shown to exhibit anti-cancer activity. However, the mechanism by which acevaltrate inhibits tumor growth is not fully understood. We here demonstrated the effect of acevaltrate on hypoxia-inducible factor-1α (HIF-1α) expression. Acevaltrate showed a potent inhibitory activity against HIF-1α induced by hypoxia in various cancer cells. This compound markedly decreased the hypoxia-induced accumulation of HIF-1α protein dose-dependently. Further analysis revealed that acevaltrate inhibited HIF-1α protein synthesis and promoted degradation of HIF-1α protein, without affecting the expression level of HIF-1α mRNA. Moreover, the phosphorylation levels of mammalian target of rapamycin (mTOR), ribosomal protein S6 kinase (p70S6K), and eIF4E binding protein-1 (4E-BP1) were significantly suppressed by acevaltrate. In addition, acevaltrate promoted apoptosis and inhibited proliferation, which was potentially mediated by suppression of HIF-1α. We also found that acevaltrate administration inhibited tumor growth in mouse xenograft model. Taken together, these results suggested that acevaltrate was a potent inhibitor of HIF-1α and provided a new insight into the mechanisms of acevaltrate against cancers.
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MESH Headings
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Humans
- Animals
- Apoptosis/drug effects
- Cell Proliferation/drug effects
- TOR Serine-Threonine Kinases/metabolism
- Cell Line, Tumor
- Valerian/chemistry
- Xenograft Model Antitumor Assays
- Mice
- Mice, Nude
- Mice, Inbred BALB C
- Ribosomal Protein S6 Kinases, 70-kDa/metabolism
- Neoplasms/drug therapy
- Neoplasms/metabolism
- Neoplasms/pathology
- Adaptor Proteins, Signal Transducing/metabolism
- Adaptor Proteins, Signal Transducing/genetics
- Cell Cycle Proteins/metabolism
- Cell Cycle Proteins/genetics
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
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Affiliation(s)
- Chunliu Mi
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
| | - Qiu-Li Zhang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China; School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Meng-Jun Sun
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China; School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - You Lv
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China; School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Qiu-Li Sun
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China; School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Shao-Lei Geng
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Tian-Yun Wang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China; Department of Biochemistry and Molecular Biology, School of Basic Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
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2
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Geng SL, Zhao XJ, Zhang X, Zhang JH, Mi CL, Wang TY. Recombinant therapeutic proteins degradation and overcoming strategies in CHO cells. Appl Microbiol Biotechnol 2024; 108:182. [PMID: 38285115 PMCID: PMC10824870 DOI: 10.1007/s00253-024-13008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/20/2023] [Accepted: 01/08/2024] [Indexed: 01/30/2024]
Abstract
Mammalian cell lines are frequently used as the preferred host cells for producing recombinant therapeutic proteins (RTPs) having post-translational modified modification similar to those observed in proteins produced by human cells. Nowadays, most RTPs approved for marketing are produced in Chinese hamster ovary (CHO) cells. Recombinant therapeutic antibodies are among the most important and promising RTPs for biomedical applications. One of the issues that occurs during development of RTPs is their degradation, which caused by a variety of factors and reducing quality of RTPs. RTP degradation is especially concerning as they could result in reduced biological functions (antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity) and generate potentially immunogenic species. Therefore, the mechanisms underlying RTP degradation and strategies for avoiding degradation have regained an interest from academia and industry. In this review, we outline recent progress in this field, with a focus on factors that cause degradation during RTP production and the development of strategies for overcoming RTP degradation. KEY POINTS: • The recombinant therapeutic protein degradation in CHO cell systems is reviewed. • Enzymatic factors and non-enzymatic methods influence recombinant therapeutic protein degradation. • Reducing the degradation can improve the quality of recombinant therapeutic proteins.
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Affiliation(s)
- Shao-Lei Geng
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- Henan Engineering Research Center for Biopharmaceutical Innovation, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Xiao-Jie Zhao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Xi Zhang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Ji-Hong Zhang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Chun-Liu Mi
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China
- Henan Engineering Research Center for Biopharmaceutical Innovation, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Tian-Yun Wang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
- Henan Engineering Research Center for Biopharmaceutical Innovation, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
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Geng SL, Li HY, Zhang XS, Wang T, Zhou SP, Xu WH. CBR1 decreases protein carbonyl levels via the ROS/Akt/CREB pathway to extend lifespan in the cotton bollworm, Helicoverpa armigera. FEBS J 2022; 290:2127-2145. [PMID: 36421037 DOI: 10.1111/febs.16691] [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: 08/22/2022] [Revised: 10/12/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
Reactive oxygen species (ROS) are considered a major cause of ageing and ageing-related diseases through protein carbonylation. Little is known about the molecular mechanisms that confer protection against ROS. Here, we observed that, compared with nondiapause-destined pupae, high protein carbonyl levels are present in the brains of diapause-destined pupae, which is a 'non-ageing' phase in the moth Helicoverpa armigera. Protein carbonyl levels respond to ROS and decrease metabolic activity to induce diapause in order to extend lifespan. However, protein carbonylation in the brains of diapause-destined pupae still occurs at a physiological level compared to young adult brains. We find that ROS activate Akt, and Akt then phosphorylates the transcription factor CREB to facilitate its nuclear import. CREB binds to the promoter of carbonyl reductase 1 (CBR1) and regulates its expression. High CBR1 levels reduce protein carbonyl levels to maintain physiological levels. This is the first report showing that the moth brain can naturally control protein carbonyl levels through a distinct ROS-Akt-CREB-CBR1 pathway to extend lifespan.
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Affiliation(s)
- Shao-Lei Geng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Hai-Yin Li
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xiao-Shuai Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Tao Wang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Shi-Pei Zhou
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Wei-Hua Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
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Geng SL, Gong T, Ji C, Su HH. Oral tofacitinib for successful treatment of refractory alopecia areata in preschool children. J Eur Acad Dermatol Venereol 2022; 36:e1055-e1057. [PMID: 35876014 DOI: 10.1111/jdv.18447] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S L Geng
- Department of Dermatology, Institute of Dermatology and Venereology, Fujian Dermatology and Venereology Research Institute, Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - T Gong
- Central Laboratory, the First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China
| | - C Ji
- Department of Dermatology, Institute of Dermatology and Venereology, Fujian Dermatology and Venereology Research Institute, Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - H H Su
- Department of Dermatology, Tianjin Children's Hospital, Tianjin, 300074, China
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5
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Geng SL, Zhang XS, Xu WH. COXIV and SIRT2-mediated G6PD deacetylation modulate ROS homeostasis to extend pupal lifespan. FEBS J 2020; 288:2436-2453. [PMID: 33058529 DOI: 10.1111/febs.15592] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 04/27/2020] [Revised: 09/17/2020] [Accepted: 10/09/2020] [Indexed: 01/03/2023]
Abstract
Previous studies have shown that high physiological levels of reactive oxygen species (ROS) in the brain promote pupal diapause, which extends the pupal lifespan. However, the molecular mechanisms of ROS generation are unclear. In this paper, we found that mitochondrial ROS (mtROS) levels in the brains of Helicoverpa armigera diapause-destined pupae (DP) were higher and that the expression of cytochrome oxidase subunit IV (COXIV) was lower than in NP. In addition, downregulating COXIV caused mitochondrial dysfunction which elevated mtROS levels. Protein kinase A (PKA) was downregulated in DP, which led to the downregulated expression of the mitochondrial transcription factor TFAM. Low TFAM activity failed to promote COXIV expression and resulted in the high ROS levels that induced diapause. In addition, low sirtuin 2 expression suppressed glucose-6-phosphate dehydrogenase (G6PD) deacetylation at K382, which led to reduced G6PD activity and low NADPH levels, thereby maintaining high levels of ROS. Two proteins, COXIV and G6PD, thus play key roles in the elevated accumulation of ROS that induce diapause and extend the pupal lifespan.
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Affiliation(s)
- Shao-Lei Geng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xiao-Shuai Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Wei-Hua Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
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6
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Wang XX, Geng SL, Zhang XS, Xu WH. P-S6K is associated with insect diapause via the ROS/AKT/ S6K/CREB/HIF-1 pathway in the cotton bollworm, Helicoverpa armigera. Insect Biochem Mol Biol 2020; 120:103262. [PMID: 32088323 DOI: 10.1016/j.ibmb.2019.103262] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 10/17/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Diapause is a complex physiological response that allows insects to survive unfavorable environmental conditions, and many signaling pathways participate in regulating this process. However, little is known about TOR signaling in the regulation of diapause. In this study, we found that the TOR pathway-related proteins TOR and Raptor are expressed at low levels in the brains of diapause-destined pupae of Helicoverpa armigera, consistent with a previous report that TOR signaling is associated with development. Interestingly, another TOR signaling-related protein, p-S6K, was increased in the brains of diapause-destined pupae. Our results showed that p-S6K in the brains of diapause-destined pupae can respond to the upstream signals reactive oxygen species (ROS) and AKT and that S6K activates the level of CREB, which binds to the HIF-1α promoter and increases its expression. Previous study has shown that HIF-1α levels elevated by ROS in the brains of diapause-destined pupae cause low mitochondrial activity for insect diapause. Thus, p-S6K in response to ROS/AKT regulates HIF-1α via activating transcription factor CREB for diapause initiation.
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Affiliation(s)
- Xiao-Xue Wang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Shao-Lei Geng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xiao-Shuai Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Wei-Hua Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.
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7
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Chen W, Geng SL, Song Z, Li YJ, Wang H, Cao JY. Alternative splicing and expression analysis of HSF1 in diapause pupal brains in the cotton bollworm, Helicoverpa armigera. Pest Manag Sci 2019; 75:1258-1269. [PMID: 30324758 DOI: 10.1002/ps.5238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 01/10/2018] [Revised: 10/07/2018] [Accepted: 10/09/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Diapause is the arrest of the development of insects and can be used for the development of effective agricultural pest management strategies. Heat shock protein 70 (Hsp70) is reported to be up-regulated during diapause to maintain survival in some insect species. However, its regulatory mechanism is unknown. RESULTS Expression of hsp70 in Helicoverpa armigera was found to be up-regulated in diapause pupal brains. To elucidate the molecular regulatory mechanisms of hsp70, we focused our attention on its transcription factor, heat shock factor 1 (HSF1). Four alternative splicing variants of HSF1 from pupal brains of H. armigera were identified, and subcellular localization analysis indicated that these variants were exclusively expressed in the nucleus. Real-time PCR analysis showed that all of these variants were up-regulated in diapause pupal brains, and their expression patterns were consistent with that of hsp70. Finally, promoter activity assay and Western blotting detection demonstrated that hsp70 was activated and up-regulated by these variants. CONCLUSION Expression of hsp70 in H. armigera during diapause is regulated by multiple alternatively spliced isoforms of HSF1. The results of this study may provide important information for understanding the regulatory mechanisms of hsps during insect diapause. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Wei Chen
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Shao-Lei Geng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Zhe Song
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yu-Juan Li
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Hui Wang
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
- School of Biological Medicine, Beijing City University, Beijing, China
| | - Jian-Yun Cao
- School of Economics and Trade, South China University of Technology, Guangzhou, China
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Li HY, Wang T, Yang YP, Geng SL, Xu WH. TGF-β signaling regulates p-Akt levels via PP2A during diapause entry in the cotton bollworm, Helicoverpa armigera. Insect Biochem Mol Biol 2017; 87:165-173. [PMID: 28720534 DOI: 10.1016/j.ibmb.2017.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/13/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
Akt, which is a key kinase in the insulin signaling pathway, plays important roles in glucose metabolism, cell proliferation, transcription and cell migration. Our previous studies indicated that low insulin levels and high p-Akt levels are present in diapause-destined individuals. Here, we show that PI3K, which is upstream of Akt, is low in diapause-destined pupal brains but high in p-Akt levels, implying that p-Akt is modified by factors other than the insulin signaling pathway. Protein phosphatase 2A (PP2A), which is a key regulator in the TGF-β signaling pathway, can directly bind to and dephosphorylate Akt. Low PP2A expression and activity in diapause-destined individuals suggest that a weak Akt dephosphorylation contributes to p-Akt accumulation. In addition, transforming growth factor-β receptor I (TβRI), which is upstream of PP2A, increases the activity of PP2A and decreases the p-Akt levels. These results show that TGF-β signaling decreases p-Akt levels by increasing the activity of PP2A. This is the first report showing that TGF-β signaling negatively regulates the insulin pathway in insect development or diapause.
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Affiliation(s)
- Hai-Yin Li
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Tao Wang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yong-Pan Yang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shao-Lei Geng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wei-Hua Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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