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Teng Y, Xu J, Wang Y, Wen N, Ye H, Li B. Combining a glycolysis‑related prognostic model based on scRNA‑Seq with experimental verification identifies ZFP41 as a potential prognostic biomarker for HCC. Mol Med Rep 2024; 29:78. [PMID: 38516783 PMCID: PMC10975023 DOI: 10.3892/mmr.2024.13203] [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: 10/23/2023] [Accepted: 02/27/2024] [Indexed: 03/23/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is a common malignancy with a poor prognosis, and its heterogeneity affects the response to clinical treatments. Glycolysis is highly associated with HCC therapy and prognosis. The present study aimed to identify a novel biomarker for HCC by exploring the heterogeneity of glycolysis in HCC. The intersection of both marker genes of glycolysis‑related cell clusters from single‑cell RNA sequencing analysis and mRNA data of liver HCC from The Cancer Genome Atlas were used to construct a prognostic model through Cox proportional hazard regression and the least absolute shrinkage and selection operator Cox regression. Data from the International Cancer Genome Consortium were used to validate the results of the analysis. Immune status analysis was then conducted. A significant gene in the prognostic model was identified as a potential biomarker and was verified through in vitro experiments. The results revealed that the glycolysis‑related prognostic model divided patients with HCC into high‑ and low‑risk groups. A nomogram combining the model and clinical features exhibited accurate predictive ability, with an area under the curve of 0.763 at 3 years. The high‑risk group exhibited a higher expression of checkpoint genes and lower tumor immune dysfunction and exclusion scores, suggesting that this group may be more likely to benefit from immunotherapy. The tumor tissues had a higher zinc finger protein (ZFP)41 mRNA and protein expression compared with the adjacent tissues. In vitro analyses revealed that ZFP41 played a crucial role in cell viability, proliferation, migration, invasion and glycolysis. On the whole, the present study demonstrates that the glycolysis‑related prognostic gene, ZFP41, is a potential prognostic biomarker and therapeutic target, and may play a crucial role in glycolysis and malignancy in HCC.
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Affiliation(s)
- Yu Teng
- West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jianrong Xu
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yaoqun Wang
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Division of Biliary Tract Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ningyuan Wen
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Division of Biliary Tract Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hui Ye
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Division of Biliary Tract Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Bei Li
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Division of Biliary Tract Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Dong C, Yao J, Wu Z, Hu J, Sun L, Wu Z, Yan J, Yin X. PAFAH1B3 is a KLF9 target gene that promotes proliferation and metastasis in pancreatic cancer. Sci Rep 2024; 14:9196. [PMID: 38649699 PMCID: PMC11035664 DOI: 10.1038/s41598-024-59427-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/10/2024] [Indexed: 04/25/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal human malignancies. Uncontrolled cell proliferation, invasion and migration of pancreatic cancer cells are the fundamental causes of death in PDAC patients. Our previous studies showed that KLF9 inhibits the proliferation, invasion and migration of pancreatic cancer cells. However, the underlying mechanisms are not fully understood. In this study, we found that platelet-activating factor acetylhydrolase IB3 (PAFAH1B3) is highly expressed in pancreatic cancer tissues and cells. In vitro and in vivo studies showed that overexpression of PAFAH1B3 promoted the proliferation and invasion of pancreatic cancer cells, while downregulation of PAFAH1B3 inhibited these processes. We found that KLF9 expression is negatively correlated with PAFAH1B3 expression in pancreatic cancer tissues and cells. Western blotting revealed that KLF9 negatively regulates the expression of PAFAH1B3 in pancreatic cancer tissues and cells. Rescue experiments showed that overexpression of PAFAH1B3 could partially attenuate the suppression of pancreatic cancer cell proliferation, invasion and migration induced by KLF9 overexpression. Finally, chromatin immunoprecipitation (ChIP) and dual-luciferase reporter assays were carried out, and the results showed that KLF9 directly binds to the promoter of PAFAH1B3 and inhibits its transcriptional activity. In conclusion, our study indicated that KLF9 can inhibit the proliferation, invasion, migration and metastasis of pancreatic cancer cells by inhibiting PAFAH1B3.
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Affiliation(s)
- Cairong Dong
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Jinping Yao
- Department of Endocrinology Department, The Fourth Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Zhipeng Wu
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Junwen Hu
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Liang Sun
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Zhengyi Wu
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Jinlong Yan
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China.
| | - Xiangbao Yin
- Department of General Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China.
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Guo H, Yang L, Liu J, Chen L, Huang Y, Li J. KLF5 promotes the ossification process of ligamentum flavum by transcriptionally activating CX43. J Orthop Surg Res 2024; 19:244. [PMID: 38622696 PMCID: PMC11020807 DOI: 10.1186/s13018-024-04702-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 03/25/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Ossification of ligamentum flavum (OLF) is a prevalent degenerative spinal disease, typically causing severe neurological dysfunction. Kruppel-like factor 5 (KLF5) plays an essential role in the regulation of skeletal development. However, the mechanism KLF5 plays in OLF remains unclear, necessitating further investigative studies. METHODS qRT-PCR, immunofluorescent staining and western blot were used to measure the expression of KLF5. Alkaline Phosphatase (ALP) staining, Alizarin red staining (ARS), and the expression of Runt-related transcription factor 2 (RUNX2), osteopontin (OPN), and osteocalcin (OCN) were used to evaluate the osteogenic differentiation. Luciferase activity assay and ChIP-PCR were performed to investigate the molecular mechanisms. RESULTS KLF5 was significantly upregulated in OLF fibroblasts in contrast to normal ligamentum flavum (LF) fibroblasts. Silencing KLF5 diminished osteogenic markers and mineralized nodules, while its overexpression had the opposite effect, confirming KLF5's role in promoting ossification. Moreover, KLF5 promotes the ossification of LF by activating the transcription of Connexin 43 (CX43), and overexpressing CX43 could reverse the suppressive impact of KLF5 knockdown on OLF fibroblasts' osteogenesis. CONCLUSION KLF5 promotes the OLF by transcriptionally activating CX43. This finding contributes significantly to our understanding of OLF and may provide new therapeutic targets.
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Affiliation(s)
- Hubing Guo
- The First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China
| | - Lingxia Yang
- Department of Odermatology, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China
| | - Jin Liu
- The First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China
| | - Liqi Chen
- The First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China
| | - Yufeng Huang
- The First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China
| | - Jinsong Li
- Department of Spine Surgery, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, 410013, Hunan, China.
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Kuang Y, Yang J, Sun M, Rui T, Yang Z, Shi M. Depression of LncRNA DANCR alleviates tubular injury in diabetic nephropathy by regulating KLF5 through sponge miR-214-5p. BMC Nephrol 2024; 25:130. [PMID: 38609873 PMCID: PMC11010359 DOI: 10.1186/s12882-024-03562-6] [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: 11/16/2023] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
OBJECTIVE Diabetic nephropathy (DN) manifests a critical aspect in the form of renal tubular injury. The current research aimed to determine the function and mechanism of long non-coding ribonucleic acid (LncRNA) differentiation antagonising non-protein coding RNA (DANCR), with a focus on its impact on renal tubular injury. METHODS Quantitative reverse transcription polymerase chain reaction was employed to analyze the RNA levels of DANCR in the serum of patients with DN or human proximal tubular epithelial cells (human kidney 2 [HK2]). The diagnostic significance of DANCR was assessed using a receiver operating characteristic curve. A DN model was established by inducing HK-2 cells with high glucose (HG). Cell proliferation, apoptosis, and the levels of inflammatory factors, reactive oxygen species (ROS), and malondialdehyde (MDA) were detected using the Cell Counting Kit - 8, flow cytometry, and enzyme-linked immunosorbent assay. The interaction between microRNA (miR)-214-5p and DANCR or Krüppel-like factor 5 (KLF5) was investigated using RNA immunoprecipitation and dual-luciferase reporter assays. RESULTS Elevated levels of DANCR were observed in the serum of patients with DN and HG-inducted HK-2 cells (P < 0.05). DANCR levels effectively identified patients with DN from patients with type 2 diabetes mellitus. Silencing of DANCR protected against HG-induced tubular injury by restoring cell proliferation, inhibiting apoptosis, and reducing the secretion of inflammatory factors and oxidative stress production (P < 0.05). DANCR functions as a sponge for miR-214-5p, and the mitigation of DANCR silencing on HG-induced renal tubular injury was partially attenuated with reduced miR-214-5p (P < 0.05). Additionally, KLF5 was identified as the target of miR-214-5p. CONCLUSION DANCR was identified as diagnostic potential for DN and the alleviation of renal tubular injury via the miR-214-5p/KLF5 axis, following DANCR silencing, introduces a novel perspective and approach to mitigating DN.
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Affiliation(s)
- Yongling Kuang
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China.
| | - Juan Yang
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China
| | - Meimei Sun
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China
| | - Tingting Rui
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China
| | - Zhenhua Yang
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China
| | - Meihua Shi
- Department of Nephrology, Gongli Hospital of Shanghai Pudong New Area, No. 219 Miaopu Road, Pudong New Area, 200135, Shanghai, China
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Tamargo IA, Baek KI, Xu C, Kang DW, Kim Y, Andueza A, Williams D, Demos C, Villa-Roel N, Kumar S, Park C, Choi R, Johnson J, Chang S, Kim P, Tan S, Jeong K, Tsuji S, Jo H. HEG1 Protects Against Atherosclerosis by Regulating Stable Flow-Induced KLF2/4 Expression in Endothelial Cells. Circulation 2024; 149:1183-1201. [PMID: 38099436 PMCID: PMC11001532 DOI: 10.1161/circulationaha.123.064735] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 11/08/2023] [Indexed: 03/09/2024]
Abstract
BACKGROUND Atherosclerosis preferentially occurs in arterial regions of disturbed blood flow, and stable flow (s-flow) protects against atherosclerosis by incompletely understood mechanisms. METHODS Our single-cell RNA-sequencing data using the mouse partial carotid ligation model was reanalyzed, which identified Heart-of-glass 1 (HEG1) as an s-flow-induced gene. HEG1 expression was studied by immunostaining, quantitive polymerase chain reaction, hybridization chain reaction, and Western blot in mouse arteries, human aortic endothelial cells (HAECs), and human coronary arteries. A small interfering RNA-mediated knockdown of HEG1 was used to study its function and signaling mechanisms in HAECs under various flow conditions using a cone-and-plate shear device. We generated endothelial-targeted, tamoxifen-inducible HEG1 knockout (HEG1iECKO) mice. To determine the role of HEG1 in atherosclerosis, HEG1iECKO and littermate-control mice were injected with an adeno-associated virus-PCSK9 [proprotein convertase subtilisin/kexin type 9] and fed a Western diet to induce hypercholesterolemia either for 2 weeks with partial carotid ligation or 2 months without the surgery. RESULTS S-flow induced HEG1 expression at the mRNA and protein levels in vivo and in vitro. S-flow stimulated HEG1 protein translocation to the downstream side of HAECs and release into the media, followed by increased messenger RNA and protein expression. HEG1 knockdown prevented s-flow-induced endothelial responses, including monocyte adhesion, permeability, and migration. Mechanistically, HEG1 knockdown prevented s-flow-induced KLF2/4 (Kruppel-like factor 2/4) expression by regulating its intracellular binding partner KRIT1 (Krev interaction trapped protein 1) and the MEKK3-MEK5-ERK5-MEF2 pathway in HAECs. Compared with littermate controls, HEG1iECKO mice exposed to hypercholesterolemia for 2 weeks and partial carotid ligation developed advanced atherosclerotic plaques, featuring increased necrotic core area, thin-capped fibroatheroma, inflammation, and intraplaque hemorrhage. In a conventional Western diet model for 2 months, HEG1iECKO mice also showed an exacerbated atherosclerosis development in the arterial tree in both sexes and the aortic sinus in males but not in females. Moreover, endothelial HEG1 expression was reduced in human coronary arteries with advanced atherosclerotic plaques. CONCLUSIONS Our findings indicate that HEG1 is a novel mediator of atheroprotective endothelial responses to flow and a potential therapeutic target.
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Affiliation(s)
- Ian A Tamargo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
- Molecular and Systems Pharmacology Program (I.A.T., D.W., H.J.), Emory University, Atlanta, GA
| | - Kyung In Baek
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Chenbo Xu
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Dong Won Kang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Yerin Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Aitor Andueza
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Darian Williams
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
- Molecular and Systems Pharmacology Program (I.A.T., D.W., H.J.), Emory University, Atlanta, GA
| | - Catherine Demos
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Nicolas Villa-Roel
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Christian Park
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Rachel Choi
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Janie Johnson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Seowon Chang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Paul Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Sheryl Tan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Kiyoung Jeong
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
| | - Shoutaro Tsuji
- Medical Technology & Clinical Engineering, Gunma University of Health and Welfare, Maebashi, Japan (S.T.)
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA (I.A.T., K.I.B., C.X., D.W.K., Y.K., A.A., D.W., C.D., N.V.-R., S.K., C.P., R.C., J.J., S.C., P.K., S.T., K.J., H.J.)
- Molecular and Systems Pharmacology Program (I.A.T., D.W., H.J.), Emory University, Atlanta, GA
- Division of Cardiology, Department of Medicine (H.J.), Emory University, Atlanta, GA
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Xin L, Liu ZY, Liu CX, Sheng J, Zhou Q, Yuan YW, Yue ZQ, Lu H, Gan JH. KLF10/CBS increases the sensitivity of gastric carcinoma cells to methionine restriction by promoting sulfur transfer pathway. Exp Cell Res 2024; 437:114007. [PMID: 38499142 DOI: 10.1016/j.yexcr.2024.114007] [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: 10/11/2023] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
Gastric cancer metastasis is a major cause of poor prognosis. Our previous research showed that methionine restriction (MR) lowers the invasiveness and motility of gastric carcinoma. In this study, we investigated the particular mechanisms of MR on gastric carcinoma metastasis. In vitro, gastric carcinoma cells (AGS, SNU-5, MKN7, KATO III, SNU-1, and MKN45) were grown in an MR medium for 24 h. In vivo, BALB/c mice were given a methionine-free (Met-) diet. Transwell assays were used to investigate cell invasion and migration. The amounts of Krüppel like factor 10 (KLF10) and cystathionine β-synthase (CBS) were determined using quantitative real-time PCR and Western blot. To determine the relationship between KLF10 and CBS, chromatin immunoprecipitation and a dual-luciferase reporter experiment were used. Hematoxylin-eosin staining was used to detect lung metastasis. Liquid chromatography-mass spectrometry was used to determine cystathionine content. MR therapy had varying effects on the invasion and migration of gastric carcinoma cells AGS, SNU-5, MKN7, KATO III, SNU-1, and MKN45. KLF10 was highly expressed in AGS cells but poorly expressed in KATO III cells. KLF10 improved MR's ability to prevent gastric carcinoma cell invasion and migration. In addition, KLF10 may interact with CBS, facilitating transcription. Further detection revealed that inhibiting the KLF10/CBS-mediated trans-sulfur pathway lowered Met-'s inhibitory effect on lung metastasis development. KLF10 transcription activated CBS, accelerated the trans-sulfur pathway, and increased gastric carcinoma cells' susceptibility to MR.
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Affiliation(s)
- Lin Xin
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China.
| | - Zhi-Yang Liu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Chen-Xi Liu
- Excellent Ophthalmology Class 221, School of Ophthalmology &optometry, Nanchang University, China
| | - Jie Sheng
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Qi Zhou
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Yi-Wu Yuan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Zhen-Qi Yue
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Hao Lu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Jin-Heng Gan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi Province, China
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Lobo-Alves SC, Oliveira LAD, Kretzschmar GC, Valengo AE, Rosati R. Long noncoding RNA expression in acute lymphoblastic leukemia: A systematic review. Crit Rev Oncol Hematol 2024; 196:104290. [PMID: 38341118 DOI: 10.1016/j.critrevonc.2024.104290] [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: 09/01/2023] [Revised: 01/03/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024] Open
Abstract
Long noncoding RNAs (lncRNAs), as gene expression modulators, are potential players in Acute Lymphoblastic Leukemia (ALL) pathogenesis. We systematically explored current literature on lncRNA expression in ALL to identify lncRNAs consistently reported as differentially expressed (DE) either in ALL versus controls or between ALL subtypes. By comparing articles that provided global expression data for DE lncRNAs in the ETV6::RUNX1-positive ALL subtype, we identified four DE lncRNAs in three independent studies (two versus other subtypes and one versus controls), showing concordant expression of LINC01013, CRNDE and lnc-KLF7-1. Additionally, LINC01503 was consistently downregulated on ALL versus controls. Within RT-qPCR studies, twelve lncRNA were DE in more than one source. Thus, several lncRNAs were supported as DE in ALL by multiple sources, highlighting their potential role as candidate biomarkers or therapeutic targets. Finally, as lncRNA annotation is rapidly expanding, standardization of reporting and nomenclature is urgently needed to improve data verifiability and compilation.
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Affiliation(s)
- Sara Cristina Lobo-Alves
- Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632 - Água Verde, Curitiba, PR 80250-060, Brazil; Faculdades Pequeno Príncipe, Av Iguaçu, 333, Rebouças, Curitiba, PR 80230-020, Brazil; National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS 90035-003, Brazil.
| | - Liana Alves de Oliveira
- Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632 - Água Verde, Curitiba, PR 80250-060, Brazil; National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS 90035-003, Brazil.
| | - Gabriela Canalli Kretzschmar
- Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632 - Água Verde, Curitiba, PR 80250-060, Brazil; Faculdades Pequeno Príncipe, Av Iguaçu, 333, Rebouças, Curitiba, PR 80230-020, Brazil; National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS 90035-003, Brazil.
| | - Andressa Eloisa Valengo
- Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632 - Água Verde, Curitiba, PR 80250-060, Brazil; Faculdades Pequeno Príncipe, Av Iguaçu, 333, Rebouças, Curitiba, PR 80230-020, Brazil
| | - Roberto Rosati
- Instituto de Pesquisa Pelé Pequeno Príncipe, Av. Silva Jardim, 1632 - Água Verde, Curitiba, PR 80250-060, Brazil; Faculdades Pequeno Príncipe, Av Iguaçu, 333, Rebouças, Curitiba, PR 80230-020, Brazil; National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS 90035-003, Brazil.
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8
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Aabdien A, Sichlinger L, Borgel Z, Jones MR, Waston IA, Gatford NJF, Raval P, Tanangonan L, Powell TR, Duarte RRR, Srivastava DP. Schizophrenia risk proteins ZNF804A and NT5C2 interact in cortical neurons. Eur J Neurosci 2024; 59:2102-2117. [PMID: 38279611 DOI: 10.1111/ejn.16254] [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: 07/31/2023] [Revised: 12/13/2023] [Accepted: 01/03/2024] [Indexed: 01/28/2024]
Abstract
The zinc finger protein 804A (ZNF804A) and the 5'-nucleotidase cytosolic II (NT5C2) genes are amongst the first schizophrenia susceptibility genes to have been identified in large-scale genome-wide association studies. ZNF804A has been implicated in the regulation of neuronal morphology and is required for activity-dependent changes to dendritic spines. Conversely, NT5C2 has been shown to regulate 5' adenosine monophosphate-activated protein kinase activity and has been implicated in protein synthesis in human neural progenitor cells. Schizophrenia risk genotype is associated with reduced levels of both NT5C2 and ZNF804A in the developing brain, and a yeast two-hybrid screening suggests that their encoded proteins physically interact. However, it remains unknown whether this interaction also occurs in cortical neurons and whether they could jointly regulate neuronal function. Here, we show that ZNF804A and NT5C2 colocalise and interact in HEK293T cells and that their rodent homologues, ZFP804A and NT5C2, colocalise and form a protein complex in cortical neurons. Knockdown of the Zfp804a or Nt5c2 genes resulted in a redistribution of both proteins, suggesting that both proteins influence the subcellular targeting of each other. The identified interaction between ZNF804A/ZFP804A and NT5C2 suggests a shared biological pathway pertinent to schizophrenia susceptibility within a neuronal cell type thought to be central to the neurobiology of the disorder, providing a better understanding of its genetic landscape.
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Affiliation(s)
- Afra Aabdien
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Laura Sichlinger
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Zoe Borgel
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Madeleine R Jones
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Iain A Waston
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Nicholas J F Gatford
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Pooja Raval
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Lloyd Tanangonan
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Timothy R Powell
- Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Rodrigo R R Duarte
- Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Deepak P Srivastava
- Department of Basic and Clinical Neuroscience, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
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Zhang Y, Cheng Y, Zhao W, Song F, Cao Y. Effects of Halloysite Nanotubes and Multi-walled Carbon Nanotubes on Kruppel-like Factor 15-Mediated Downstream Events in Mouse Hearts After Intravenous Injection. Cardiovasc Toxicol 2024; 24:408-421. [PMID: 38411850 DOI: 10.1007/s12012-024-09844-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 02/21/2024] [Indexed: 02/28/2024]
Abstract
Halloysite nanotubes (HNTs) are nanomaterials (NMs) derived from natural clays and have been considered as biocompatible NMs for biomedical uses. However, the cardiovascular toxicity of HNTs has not been thoroughly investigated. In this study, we compared the cardiotoxicity of HNTs and multi-walled carbon nanotubes (MWCNTs), focusing on the changes in Kruppel-like factor (KLF)-mediated signaling pathways. Mice were intravenously injected with 50 µg NMs, once a day, for 5 days, and then mouse hearts were removed for experiments. While HNTs or MWCNTs did not induce obvious pathological changes, RNA-sequencing data suggested the alterations of KLF gene expression. We further confirmed an increase of Klf15 positive cells, accompanied by changes in Klf15-related gene ontology (GO) terms. We noticed that most of the changed GO terms are related with the regulation of gene expression, and we confirmed that the NMs increased myoneurin (Mynn) but decreased snail family transcriptional repressor 1 (Snai1), two transcription factors (TFs) related with Klf15. Besides, the changed GO terms also include metal ion binding and positive regulation of glucose import, and we verified an increase of phosphoenolpyruvate carboxykinase 1 (Pck1) and insulin receptor (Insr). However, HNTs and MWCNTs only showed minimal impact on cell death signaling pathways, and no increase in apoptotic sites was observed after NM treatment. We concluded that intravenous administration of HNTs and MWCNTs activated a protective TF, namely Klf15 in mouse aortas, to alter gene expression and signaling pathways related with metal ion binding and glucose import.
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Affiliation(s)
- Yimin Zhang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Yujia Cheng
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Weichao Zhao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Fengmei Song
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, China.
| | - Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, China.
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10
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He Q, Fan X, Wang S, Chen S, Chen J. Juvenile hormone inhibits adult cuticle formation in Drosophila melanogaster through Kr-h1/Dnmt2-mediated DNA methylation of Acp65A promoter. Insect Mol Biol 2024; 33:124-135. [PMID: 37916965 DOI: 10.1111/imb.12884] [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] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/08/2023] [Indexed: 11/03/2023]
Abstract
Differentiation of imaginal epidermal cells of Drosophila melanogaster to form adult cuticles occurs at approximately 40-93 h after puparium formation. Juvenile hormone (JH) given at pupariation results in formation of a second pupal cuticle in the abdomen instead of the adult cuticle. Although the adult cuticle gene Acp65A has been reported to be down-regulated following JH treatment, the regulatory mechanism remains unclear. Here, we found that the JH primary response gene Krüppel homologue 1 (Kr-h1) plays a vital role in the repression of adult cuticle formation through the mediation of JH action. Overexpression of Kr-h1 mimicked-while knocking down of Kr-h1 attenuated-the inhibitory action of JH on the formation of the adult abdominal cuticle. Further, we found that Kr-h1 inhibited the transcription of Acp65A by directly binding to the consensus Kr-h1 binding site (KBS) within the Acp65A promoter region. Moreover, the DNA methyltransferase Dnmt2 was shown to interact with Kr-h1, combined with the KBS to promote the DNA methylation of sequences around the KBS, in turn inhibiting the transcription of Acp65A. This study advances our understanding of the molecular basis of the "status quo" action of JH on the Drosophila adult metamorphosis.
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Affiliation(s)
- Qianyu He
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xiaochun Fan
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Shunxin Wang
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Shanshan Chen
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Jinxia Chen
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
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11
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Yang XX, Wang C. CircITGA7 regulates malignant phenotypes in bladder cancer cells via targeting miR-330-3p/KLF10 axis. Kaohsiung J Med Sci 2024; 40:324-334. [PMID: 38523597 DOI: 10.1002/kjm2.12821] [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: 08/31/2023] [Revised: 01/14/2024] [Accepted: 01/29/2024] [Indexed: 03/26/2024] Open
Abstract
Bladder cancer (BCa) is one of the common malignancies. Circular RNAs (circRNAs) play regulatory roles in cancer progression. CircITGA7 is a circRNA generated from several exons of ITGA7. The potential role of circITGA7 in BCa remains unknown and needs to be explored. Quantitative real time polymerase chain reaction (qRT-PCR) was used to assess circITGA7 and miR-330-3p expression in BCa tissues and cell lines. Kaplan-Meier analysis was used to evaluate the overall survival of these BCa patients. The biological function of circITGA7 was examined by overexpression of circITGA7 using CCK-8, EdU, wound-healing, and Transwell assays. Xenograft assay was performed to further validate the in vitro results. To explore the mechanism of circITGA7, luciferase reporter, RNA pull-down, fluorescence in situ hybridization (FISH) assays were employed to examine the binding interaction among circITGA7, miR-330-3p and kruppel-like factor 10 (KLF10). Western blot was used to study the protein levels of KLF10.CircITGA7 was downregulated in BCa tissues and cell lines and indicated longer overall survival. Moreover, circITGA7 restricted cell proliferation, migration and invasion of BCa through negatively regulating miR-330-3p. The in vivo model showed that circITGA7 influenced the tumor growth. Besides, the overexpression of miR-330-3p promoted cell progression by directly targeting KLF10. Mechanistically, circITGA7 inhibited BCa progression by activating KLF10 via targeting miR-330-3p.CircITGA7 alleviates BCa cell progression via circITGA7/hsa-miR-330-3p/KLF10 axis, which may provide novel therapeutic targets for BCa.
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Affiliation(s)
- Xian-Xu Yang
- Department of Urology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Chao Wang
- Department of Urology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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12
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Zhang T, Su F, Wang B, Liu L, Lu Y, Su H, Ling R, Yue P, Dai H, Yang T, Yang J, Chen R, Wu R, Zhu K, Zhao D, Hou X. Ubiquitin specific peptidase 38 epigenetically regulates KLF transcription factor 5 to augment malignant progression of lung adenocarcinoma. Oncogene 2024; 43:1190-1202. [PMID: 38409551 DOI: 10.1038/s41388-024-02985-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/28/2024]
Abstract
Protein ubiquitination is a common post-translational modification and a critical mechanism for regulating protein stability. This study aimed to explore the role and potential molecular mechanism of ubiquitin-specific peptidase 38 (USP38) in the progression of lung adenocarcinoma (LUAD). USP38 expression was significantly higher in patients with LUAD than in their counterparts, and higher USP38 expression was closely associated with a worse prognosis. USP38 silencing suppresses the proliferation of LUAD cells in vitro and impedes the tumorigenic activity of cells in xenograft mouse models in vivo. Further, we found that USP38 affected the protein stability of transcription factor Krüppel-like factors 5 (KLF5) by inhibiting its degradation. Subsequent mechanistic investigations showed that the N-terminal of USP38 (residues 1-400aa) interacted with residues 1-200aa of KLF5, thereby stabilizing the KLF5 protein by deubiquitination. Moreover, we found that PIAS1-mediated SUMOylation of USP38 was promoted, whereas SENP2-mediated de-SUMOylation of USP38 suppressed the deubiquitination effects of USP38 on KLF5. Additionally, our results demonstrated that KLF5 overexpression restored the suppression of the malignant properties of LUAD cells by USP38 knockdown. SUMOylation of USP38 enhances the deubiquitination and stability of KLF5, thereby augmenting the malignant progression of LUAD.
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Affiliation(s)
- Tao Zhang
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Fei Su
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China.
| | - Bofang Wang
- The second clinical medical college of Lanzhou University, Lanzhou, Gansu, PR China
| | - Lixin Liu
- Department of Thoracic Surgery, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Yongbin Lu
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Hongxin Su
- Department of Radiotherapy, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Ruijiang Ling
- Department of Thoracic Surgery, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Peng Yue
- Department of Thoracic Surgery, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Huanyu Dai
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Tianning Yang
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Jingru Yang
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Rui Chen
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China
| | - Ruiyue Wu
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, PR China
| | - Kaili Zhu
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, PR China
| | - Da Zhao
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China.
| | - Xiaoming Hou
- Department of Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, PR China.
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13
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Sha J, Zhang M, Feng J, Shi T, Li N, Jie Z. Promyelocytic leukemia zinc finger controls type 2 immune responses in the lungs by regulating lineage commitment and the function of innate and adaptive immune cells. Int Immunopharmacol 2024; 130:111670. [PMID: 38373386 DOI: 10.1016/j.intimp.2024.111670] [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: 12/28/2023] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 02/21/2024]
Abstract
Type 2 immune responses are critical for host defense, mediate allergy and Th2-high asthma. The transcription factor, promyelocytic leukemia zinc finger (PLZF), has emerged as a significant regulator of type 2 inflammation in the lung; however, its exact mechanism remains unclear. In this review, we summarized recent findings regarding the ability of PLZF to control the development and function of innate lymphoid cells (ILCs), iNKT cells, memory T cells, basophils, and other immune cells that drive type 2 responses. We discussed the important role of PLZF in the pathogenesis of Th2-high asthma. Collectively, prior studies have revealed the critical role of PLZF in the regulation of innate and adaptive immune cells involved in type 2 inflammation in the lung. Therefore, targeting PLZF signaling represents a promising therapeutic approach to suppress Th2-high asthma.
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Affiliation(s)
- Jiafeng Sha
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Meng Zhang
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Center of Community-Based Health Research, Fudan University, Shanghai, China.
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14
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Lafontaine N, Shore CJ, Campbell PJ, Mullin BH, Brown SJ, Panicker V, Dudbridge F, Brix TH, Hegedüs L, Wilson SG, Bell JT, Walsh JP. Epigenome-wide Association Study Shows Differential DNA Methylation of MDC1, KLF9, and CUTA in Autoimmune Thyroid Disease. J Clin Endocrinol Metab 2024; 109:992-999. [PMID: 37962983 PMCID: PMC10940258 DOI: 10.1210/clinem/dgad659] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/02/2023] [Accepted: 11/09/2023] [Indexed: 11/16/2023]
Abstract
CONTEXT Autoimmune thyroid disease (AITD) includes Graves disease (GD) and Hashimoto disease (HD), which often run in the same family. AITD etiology is incompletely understood: Genetic factors may account for up to 75% of phenotypic variance, whereas epigenetic effects (including DNA methylation [DNAm]) may contribute to the remaining variance (eg, why some individuals develop GD and others HD). OBJECTIVE This work aimed to identify differentially methylated positions (DMPs) and differentially methylated regions (DMRs) comparing GD to HD. METHODS Whole-blood DNAm was measured across the genome using the Infinium MethylationEPIC array in 32 Australian patients with GD and 30 with HD (discovery cohort) and 32 Danish patients with GD and 32 with HD (replication cohort). Linear mixed models were used to test for differences in quantile-normalized β values of DNAm between GD and HD and data were later meta-analyzed. Comb-p software was used to identify DMRs. RESULTS We identified epigenome-wide significant differences (P < 9E-8) and replicated (P < .05) 2 DMPs between GD and HD (cg06315208 within MDC1 and cg00049440 within KLF9). We identified and replicated a DMR within CUTA (5 CpGs at 6p21.32). We also identified 64 DMPs and 137 DMRs in the meta-analysis. CONCLUSION Our study reveals differences in DNAm between GD and HD, which may help explain why some people develop GD and others HD and provide a link to environmental risk factors. Additional research is needed to advance understanding of the role of DNAm in AITD and investigate its prognostic and therapeutic potential.
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Affiliation(s)
- Nicole Lafontaine
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
- Medical School, University of Western Australia, Crawley, WA, 6009, Australia
| | - Christopher J Shore
- Department of Twin Research & Genetic Epidemiology, King's College London, London, SE1 7EH, UK
| | - Purdey J Campbell
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Benjamin H Mullin
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
- School of Biomedical Sciences, University of Western Australia, Perth, 6009, Australia
| | - Suzanne J Brown
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Vijay Panicker
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
- Medical School, University of Western Australia, Crawley, WA, 6009, Australia
| | - Frank Dudbridge
- Population Health Sciences, University of Leicester, Leicester, LE1 7RH, UK
| | - Thomas H Brix
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, 5000, Denmark
| | - Laszlo Hegedüs
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, 5000, Denmark
| | - Scott G Wilson
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
- Department of Twin Research & Genetic Epidemiology, King's College London, London, SE1 7EH, UK
- School of Biomedical Sciences, University of Western Australia, Perth, 6009, Australia
| | - Jordana T Bell
- Department of Twin Research & Genetic Epidemiology, King's College London, London, SE1 7EH, UK
| | - John P Walsh
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
- Medical School, University of Western Australia, Crawley, WA, 6009, Australia
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15
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Li J, Liang Y, Zhou S, Chen J, Wu C. UCHL1 contributes to insensitivity to endocrine therapy in triple-negative breast cancer by deubiquitinating and stabilizing KLF5. Breast Cancer Res 2024; 26:44. [PMID: 38468288 DOI: 10.1186/s13058-024-01800-1] [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: 10/17/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is a deubiquitinating enzyme that regulates ERα expression in triple-negative cancer (TNBC). This study aimed to explore the deubiquitination substrates of UCHL1 related to endocrine therapeutic responses and the mechanisms of UCHL1 dysregulation in TNBC. METHODS Bioinformatics analysis was conducted using online open databases. TNBC representative MDA-MB-468 and SUM149 cells were used for in vitro and in-vivo studies. Co-immunoprecipitation was used to explore the interaction between UCHL1 and KLF5 and UCHL1-mediated KIF5 deubiquitination. CCK-8, colony formation and animal studies were performed to assess endocrine therapy responses. The regulatory effect of TET1/3 on UCHL1 promoter methylation and transcription was performed by Bisulfite sequencing PCR and ChIP-qPCR. RESULTS UCHL1 interacts with KLF5 and stabilizes KLF5 by reducing its polyubiquitination and proteasomal degradation. The UCHL1-KLF5 axis collaboratively upregulates EGFR expression while downregulating ESR1 expression at both mRNA and protein levels in TNBC. UCHL1 knockdown slows the proliferation of TNBC cells and sensitizes the tumor cells to Tamoxifen and Fulvestrant. KLF5 overexpression partially reverses these trends. Both TET1 and TET3 can bind to the UCHL1 promoter region, reducing methylation of associated CpG sites and enhancing UCHL1 transcription in TNBC cell lines. Additionally, TET1 and TET3 elevates KLF5 protein level in a UCHL1-dependent manner. CONCLUSION UCHL1 plays a pivotal role in TNBC by deubiquitinating and stabilizing KLF5, contributing to endocrine therapy resistance. TET1 and TET3 promote UCHL1 transcription through promoter demethylation and maintain KLF5 protein level in a UCHL1-dependent manner, implying their potential as therapeutic targets in TNBC.
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Affiliation(s)
- Juan Li
- Department of Breast Surgery, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yu Liang
- Department of Health Management & Institute of Health Management, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Shijie Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
| | - Jie Chen
- Department of Breast Surgery, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Chihua Wu
- Department of Breast Surgery, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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Cai H, Liang J, Jiang Y, Wang Z, Li H, Wang W, Wang C, Hou J. KLF7 regulates super-enhancer-driven IGF2BP2 overexpression to promote the progression of head and neck squamous cell carcinoma. J Exp Clin Cancer Res 2024; 43:69. [PMID: 38443991 PMCID: PMC10913600 DOI: 10.1186/s13046-024-02996-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/27/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Head and neck squamous carcinoma (HNSCC) is known for its high aggressiveness and susceptibility to cervical lymph node metastasis, which greatly contributes to its poor prognosis. During tumorigenesis, many types of cancer cells acquire oncogenic super-enhancers (SEs) that drive the overexpression of oncogenes, thereby maintaining malignant progression. This study aimed to identify and validate the role of oncogenic SE-associated genes in the malignant progression of HNSCC. METHODS We identified HNSCC cell-specific SE-associated genes through H3K27Ac ChIP-seq and overlapped them with HNSCC-associated genes obtained from The Cancer Genome Atlas (TCGA) dataset and Gene Expression Omnibus (GEO) datasets using weighted gene coexpression network analysis (WGCNA) to identify hub genes. The expression of IGF2BP2 and KLF7 in HNSCC was detected using clinical samples. To determine the biological role of IGF2BP2, we performed CCK-8, colony formation assay, Transwell migration assay, invasion assay, and orthotopic xenograft model experiments. Furthermore, we utilized a CRISPR/Cas9 gene-editing system, small-molecule inhibitors, ChIP-qPCR, and dual-luciferase reporter assays to investigate the molecular mechanisms of IGF2BP2 and its upstream transcription factors. RESULTS Our study identified IGF2BP2 as a hub SE-associated gene that exhibited aberrant expression in HNSCC tissues. Increased expression of IGF2BP2 was observed to be linked with malignant progression and unfavorable prognosis in HNSCC patients. Both in vitro and in vivo experiments confirmed that IGF2BP2 promotes the tumorigenicity and metastasis of HNSCC by promoting cell proliferation, migration, and invasion. Mechanistically, the IGF2BP2-SE region displayed enrichment for H3K27Ac, BRD4, and MED1, which led to the inhibition of IGF2BP2 transcription and expression through deactivation of the SE-associated transcriptional program. Additionally, KLF7 was found to induce the transcription of IGF2BP2 and directly bind to its promoter and SE regions. Moreover, the abundance of KLF7 exhibited a positive correlation with the abundance of IGF2BP2 in HNSCC. Patients with high expression of both KLF7 and IGF2BP2 showed poorer prognosis. Lastly, we demonstrated that the small molecule inhibitor JQ1, targeting BRD4, attenuated the proliferation and metastatic abilities of HNSCC cells. CONCLUSIONS Our study reveals the critical role of IGF2BP2 overexpression mediated by SE and KLF7 in promoting HNSCC progression. Targeting SE-associated transcriptional programs may represent a potential therapeutic strategy in managing HNSCC.
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Affiliation(s)
- Hongshi Cai
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Jianfeng Liang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Yaoqi Jiang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Ziyi Wang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Hongyu Li
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Wenjin Wang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Cheng Wang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China.
| | - Jinsong Hou
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology,, Sun Yat-Sen University, Guangzhou, 51055, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510080, China.
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Zhang Z, Liu Y, Xu Y, Xu Z, Jia J, Jin Y, Wang W, Liu L. Abrogation of KLF5 sensitizes BRCA1-proficient pancreatic cancer to PARP inhibition. Acta Biochim Biophys Sin (Shanghai) 2024; 56:576-585. [PMID: 38433576 DOI: 10.3724/abbs.2023288] [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] [Indexed: 03/05/2024] Open
Abstract
Poly ADP-ribose polymerase (PARP) inhibitor monotherapies are selectively effective in patients with pancreatic, breast, prostate, and ovarian cancers with BRCA1 mutations. Cancer patients with more frequent wild-type BRCA show poor responses to PARP inhibitors. Moreover, patients who are initially sensitive to these inhibitors eventually respond poorly to drugs. In the present study, we discover that abrogation of Kruppel-like factor 5 (KLF5) significantly inhibits homologous recombination, which is the main mechanism for DNA double-stranded repair. Furthermore, the downregulation of KLF5 expression promotes the DNA damage induced by olaparib and significantly reduces the IC 50 of the RARP inhibitor in pancreatic cancer cells. Overexpression of BRCA1 reverses the above effects caused by silencing of KLF5. Olaparib combined with a KLF5 inhibitor has an enhanced cytotoxic effect. Mechanistically, we identify BRCA1 as a KLF5 target gene. BRCA1 is positively correlated with KLF5 in PDAC tissue. Our results indicate that inhibition of KLF5 may induce BRCAness in a larger pancreatic cancer subset with proficient BRCA. The combination of KLF5 inhibitors and PARP inhibitors provides a novel treatment strategy to enhance the sensitivity of BRCA1-proficient pancreatic cancer to PARP inhibitors.
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Affiliation(s)
- Zheng Zhang
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yuxin Liu
- Institute of Liver Diseases, Shanxi Medical University, Taiyuan 030001, China
| | - Yaolin Xu
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Zijin Xu
- Department of General Surgery, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai, 201700, China
| | - Jinbin Jia
- Institute of Liver Diseases, Shanxi Medical University, Taiyuan 030001, China
| | - Yun Jin
- Department of Hepatobiliary and Pancreatic Surgery, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming 650500, China
| | - Wenquan Wang
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Liang Liu
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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18
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Machado I, Llombart-Bosch A, Charville GW, Navarro S, Domínguez Franjo MP, Bridge JA, Linos K. Sarcomas with EWSR1::Non-ETS Fusion (EWSR1::NFATC2 and EWSR1::PATZ1). Surg Pathol Clin 2024; 17:31-55. [PMID: 38278606 DOI: 10.1016/j.path.2023.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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] [Indexed: 01/28/2024]
Abstract
The wide application of increasingly advanced molecular studies in routine clinical practice has allowed a detailed, albeit still incomplete, genetic subclassification of undifferentiated round cell sarcomas. The WHO classification continues to include provisional molecular entities, whose clinicopathologic features are in the early stages of evolution. This review focuses on the clinicopathologic, molecular, and prognostic features of undifferentiated round cell sarcomas with EWSR1/FUS::NFATC2 or EWSR1::PATZ1 fusions. Classic histopathologic findings, uncommon variations, and diagnostic pitfalls are addressed, along with the utility of recently developed immunohistochemical and molecular markers.
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Affiliation(s)
- Isidro Machado
- Pathology Department, Instituto Valenciano de Oncología, Valencia, Spain; Patologika Laboratory, Hospital Quiron-Salud, Valencia, Spain; Pathology Department, University of Valencia, Valencia, Spain.
| | - Antonio Llombart-Bosch
- Pathology Department, university of Valencia, Spain and Cancer CIBER (CIBERONC), Madrid, Spain
| | | | - Samuel Navarro
- Pathology Department, university of Valencia, Spain and Cancer CIBER (CIBERONC), Madrid, Spain
| | | | - Julia A Bridge
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA; Division of Molecular Pathology, ProPath, Dallas, TX, USA
| | - Konstantinos Linos
- Department of Pathology & Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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19
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Katsuumi R, Negishi T, Imai K, Mihara N. Suppression of KLF5 basal expression in oral carcinoma-derived cells through three intact CREB1-binding sites in the silencer region. J Oral Biosci 2024; 66:217-224. [PMID: 38147910 DOI: 10.1016/j.job.2023.12.006] [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: 10/16/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/28/2023]
Abstract
OBJECTIVES Krüppel-like factor (KLF)5, which is overexpressed in carcinomas such as oral cancer, inhibits epidermal differentiation. KLF5 induces dedifferentiation of carcinoma cells, which effectuates carcinoma progression; nevertheless, the regulatory mechanism affecting the transcription of the KLF5 gene remains ambiguous. METHODS Transcriptional activity of the KLF5 silencer, specifically the 425-bp region (425-region), was examined using reporter assays. An additional analysis was conducted to assess the impact of the minimal essential region (MER) of KLF5 on its basal expression. The affinity of cAMP responsive element binding protein 1 (CREB1) for three potential CREB1-binding sites in the 425-region was analyzed using DNA pull-down and quantitative chromatin immunoprecipitation assays. Reporter assays employing a human oral squamous carcinoma cell line, HSC2, transfected with small interfering RNA or complementary DNA for CREB1, were performed to investigate the effect of CREB1 binding sites on MER activity. RESULTS The 425-region exhibited no transcriptional activity and suppressed MER transcriptional activity. This region encodes three putative CREB1-binding sites, and CREB1 demonstrated equal binding affinity for all three sites. The deletion of each of these binding sites reduced CREB1 precipitation and enhanced MER activity. Endogenous CREB1 knockdown and overexpression elevated and reduced MER activity, respectively, at the intact sites. Conversely, site deletion hampered and improved MER activity upon CREB1 knockdown and overexpression, respectively. CONCLUSIONS Suppression of KLF5 basal expression via CREB1 binding to the 425-region requires all three CREB1-binding sites to remain intact in oral carcinoma cells. Consequently, deletion of the CREB1-binding site relieves suppression of KLF5 basal expression.
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Affiliation(s)
- Reiichi Katsuumi
- Department of Biochemistry, The Nippon Dental University School of Life Dentistry at Tokyo, Japan
| | - Tsubasa Negishi
- Department of Biochemistry, The Nippon Dental University School of Life Dentistry at Tokyo, Japan
| | - Kazushi Imai
- Department of Biochemistry, The Nippon Dental University School of Life Dentistry at Tokyo, Japan
| | - Nozomi Mihara
- Department of Biochemistry, The Nippon Dental University School of Life Dentistry at Tokyo, Japan.
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Jha K, Kumar A, Bhatnagar K, Patra A, Bhavesh NS, Singh B, Chaudhary S. Modulation of Krüppel-like factors (KLFs) interaction with their binding partners in cancers through acetylation and phosphorylation. Biochim Biophys Acta Gene Regul Mech 2024; 1867:195003. [PMID: 37992989 DOI: 10.1016/j.bbagrm.2023.195003] [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: 05/31/2023] [Revised: 09/05/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
Post-translational modifications (PTMs) of transcription factors regulate transcriptional activity and play a key role in essentially all biological processes and generate indispensable insight towards biological function including activity state, subcellular localization, protein solubility, protein folding, substrate trafficking, and protein-protein interactions. Amino acids modified chemically via PTMs, function as molecular switches and affect the protein function and characterization and increase the proteome complexity. Krüppel-like transcription factors (KLFs) control essential cellular processes including proliferation, differentiation, migration, programmed cell death and various cancer-relevant processes. We investigated the interactions of KLF group-2 members with their binding partners to assess the role of acetylation and phosphorylation in KLFs on their binding affinity. It was observed that acetylation and phosphorylation at different positions in KLFs have a variable effect on binding with specific partners. KLF2-EP300, KLF4-SP1, KLF6-ATF3, KLF6-JUN, and KLF7-JUN show stabilization upon acetylation or phosphorylation at variable positions. On the other hand, KLF4-CBP, KLF4-EP300, KLF5-CBP, KLF5-WWP1, KLF6-SP1, and KLF7-ATF3 show stabilization or destabilization due to acetylation or phosphorylation at variable positions in KLFs. This provides a molecular explanation of the experimentally observed dual role of KLF group-2 members as a suppressor or activator of cancers in a PTM-dependent manner.
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Affiliation(s)
- Kanupriya Jha
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Amit Kumar
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Kartik Bhatnagar
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Anupam Patra
- Transcription Regulation Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India.
| | - Neel Sarovar Bhavesh
- Transcription Regulation Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India.
| | - Bipin Singh
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India; Centre for Life Sciences, Mahindra University, Bahadurpally, Jeedimetla, Hyderabad, Telangana 500043, India.
| | - Sarika Chaudhary
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
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21
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Shen G, Wu Y, Wang K, Niculescu M, Liu Y, Kang Y, Luo X, Wang W, Chen YH, Liu Y, Wang F, Chen L. Impulsivity and aggression in alcohol withdrawal syndrome is modulated by the interaction of ZNF804A and mTOR polymorphism. Pharmacol Biochem Behav 2024; 236:173708. [PMID: 38216065 DOI: 10.1016/j.pbb.2024.173708] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/19/2023] [Accepted: 01/05/2024] [Indexed: 01/14/2024]
Abstract
Alcohol withdrawal syndrome (AWS) is a poorly studied phenotype of alcohol use disorder. Understanding the relationship between allelic interactions and AWS-related impulsivity and aggression could have significant implications. This study aimed to investigate the main and interacting effects of ZNF804A and mTOR on impulsivity and aggression during alcohol withdrawal. 446 Chinese Han adult males with alcohol dependence were included in the study. Impulsivity and aggression were assessed, and genomic DNA was genotyped. Single gene analysis showed that ZNF804A rs1344706 (A allele/CC homozygote) and mTOR rs1057079 (C allele/TT homozygote) were strongly associated with AWS-related impulsivity and aggression. In the allelic group, MANOVA revealed a significant gene x gene interaction, suggesting that risk varied systematically depending on both ZNF804A and mTOR alleles. Additionally, a significant interactive effect of ZNF804A rs1344706 and mTOR rs7525957 was found on motor impulsivity and physical aggression, and the ZNF804A rs1344706 gene variant had significant effects on motor impulsivity and physical aggression only in mTOR rs7525957 TT homozygous carriers. The study showed that specific allelic combinations of ZNF804A and mTOR may have protective or risk-enhancing effects on AWS-related impulsivity and aggression.
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Affiliation(s)
- Guanghui Shen
- Wenzhou Seventh People's Hospital, Wenzhou 325006, China; School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yuyu Wu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Kexin Wang
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | | | - Yuqing Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yimin Kang
- Psychosomatic Medicine Research Division, Inner Mongolia Medical University, Hohhot, China
| | - Xingguang Luo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Wei Wang
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yu-Hsin Chen
- Zhejiang Provincial Clinical Research Center for Mental Disorders, The Affiliated Wenzhou Kangning Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yanlong Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China.
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China.
| | - Li Chen
- Zhejiang Provincial Clinical Research Center for Mental Disorders, The Affiliated Wenzhou Kangning Hospital, Wenzhou Medical University, Wenzhou, China.
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22
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Yang JL, Fang RF, Xie Q, Tai BJ, Yao DF, Yao M. [Overexpression of tuftelin and KLF-5 and its clinicopathological features in hepatitis B virus-related hepatocellular carcinoma]. Zhonghua Gan Zang Bing Za Zhi 2024; 32:148-154. [PMID: 38514264 DOI: 10.3760/cma.j.cn501113-20231107-00174] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Objective: To analyze and evaluate the expressions and clinical value of tuftelin (TUFT1) and Krüppel-like factor 5 (KLF5) in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) tissues. Method: KLF5 mRNA and TUFT1 mRNA transcriptional status in cancer and non-cancer groups were compared according to the Cancer Genome Atlas (TCGA) database. The differences and prognostic value between the groups were analyzed. Postoperative liver cancer and its paired pericancerous tissues, with the approval of the ethics committee, were collected to build tissue chips. The expression of KLF5 and TUFT1 and their intracellular localization were verified by immunohistochemistry. Tissue expression and clinicopathological characteristics were analyzed by immunoblotting. SPSS software was used to analyze the relationship between SPSS and patient prognosis. Results: The transcription level of TUFT1 or KLF5 mRNA was significantly higher in the HCC group than the non-cancer group (P < 0.001), according to TCGA data. Immunohistochemistry and Western blotting examination confirmed the overexpression of TUFT1 and KLF5 in human HCC tissues, which were mainly localized in the cytoplasm and cell membrane. The positivity rates of TUFT1 and KLF5 were 87.1% ( χ(2) = 18.563, P < 0.001) and 95.2% ( χ(2) = 96.435, P < 0.001) in HCC tissues, and both were significantly higher than those in the adjacent group. The expression intensity was higher in stage III-IV than stage I-II of the International Union Against Cancer standard (P < 0.01). The clinicopathological features showed that the abnormalities of the two were significantly related to HBV infection, tumor size, extrahepatic metastasis, TNM stage, and ascites. Univariate analysis was related to tumor size, HBV infection, and survival. Multivariate analysis was an independent prognostic factor for patients with HCC. Conclusion: TUFT1 and KLF5 may both be novel markers possessing clinical value in the diagnosis and prognosis of HBV-related HCC.
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Affiliation(s)
- J L Yang
- Research Center of Clinical Medicine, Affiliated Hospital & Department of Immunology, Medical School, Nantong University, Nantong 226001, China
| | - R F Fang
- Department of Gastrenterology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Q Xie
- Department of Infectious Diseases, Haian People's Hospital, Haian 226600, China
| | - B J Tai
- Department of Infectious Diseases, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - D F Yao
- Research Center of Clinical Medicine, Affiliated Hospital & Department of Immunology, Medical School, Nantong University, Nantong 226001, China Department of Gastrenterology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - M Yao
- Research Center of Clinical Medicine, Affiliated Hospital & Department of Immunology, Medical School, Nantong University, Nantong 226001, China
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23
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Herzog C, Jones A, Evans I, Reisel D, Olaitan A, Doufekas K, MacDonald N, Rådestad AF, Gemzell-Danielsson K, Zikan M, Cibula D, Dostálek L, Paprotka T, Leimbach A, Schmitt M, Ryan A, Gentry-Maharaj A, Apostolidou S, Rosenthal AN, Menon U, Widschwendter M. Plasma cell-free DNA methylation analysis for ovarian cancer detection: Analysis of samples from a case-control study and an ovarian cancer screening trial. Int J Cancer 2024; 154:679-691. [PMID: 37861205 DOI: 10.1002/ijc.34757] [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: 05/22/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 10/21/2023]
Abstract
Analysis of cell-free DNA methylation (cfDNAme), alone or combined with CA125, could help to detect ovarian cancers earlier and may reduce mortality. We assessed cfDNAme in regions of ZNF154, C2CD4D and WNT6 via targeted bisulfite sequencing in diagnostic and early detection (preceding diagnosis) settings. Diagnostic samples were obtained via prospective blood collection in cell-free DNA tubes in a convenience series of patients with a pelvic mass. Early detection samples were matched case-control samples derived from the UK Familial Ovarian Cancer Screening Study (UKFOCSS). In the diagnostic set (ncases = 27, ncontrols = 41), the specificity of cfDNAme was 97.6% (95% CI: 87.1%-99.9%). High-risk cancers were detected with a sensitivity of 80% (56.3%-94.3%). Combination of cfDNAme and CA125 resulted in a sensitivity of 94.4% (72.7%-99.9%) for high-risk cancers. Despite technical issues in the early detection set (ncases = 29, ncontrols = 29), the specificity of cfDNAme was 100% (88.1%-100.0%). We detected 27.3% (6.0%-61.0%) of high-risk cases with relatively lower genomic DNA (gDNA) contamination. The sensitivity rose to 33.3% (7.5%-70.1%) in samples taken <1 year before diagnosis. We detected ovarian cancer in several patients up to 1 year before diagnosis despite technical limitations associated with archival samples (UKFOCSS). Combined cfDNAme and CA125 assessment may improve ovarian cancer screening in high-risk populations, but future large-scale prospective studies will be required to validate current findings.
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Affiliation(s)
- Chiara Herzog
- European Translational Oncology Prevention and Screening (EUTOPS) Institute, Hall in Tirol, Austria
- Research Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria
| | - Allison Jones
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Iona Evans
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Daniel Reisel
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Adeola Olaitan
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Konstantinos Doufekas
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Nicola MacDonald
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Angelique Flöter Rådestad
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Kristina Gemzell-Danielsson
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Michal Zikan
- Department of Gynecology and Obstetrics, Charles University in Prague, First Faculty of Medicine and Hospital, Na Bulovce, Czech Republic
| | - David Cibula
- Department of Gynaecology, Obstetrics and Neonatology, First Faculty of Medicine, Charles University, Prague and, General University Hospital, Prague, Czech Republic
| | - Lukáš Dostálek
- Department of Gynaecology, Obstetrics and Neonatology, First Faculty of Medicine, Charles University, Prague and, General University Hospital, Prague, Czech Republic
| | | | | | - Markus Schmitt
- Eurofins Genomics Europe Sequencing GmbH, Konstanz, Germany
| | - Andy Ryan
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Aleksandra Gentry-Maharaj
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Sophia Apostolidou
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Adam N Rosenthal
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
| | - Usha Menon
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Martin Widschwendter
- European Translational Oncology Prevention and Screening (EUTOPS) Institute, Hall in Tirol, Austria
- Research Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, London, UK
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
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24
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Lu C, Donners MMPC, de Baaij JBJ, Jin H, Otten JJT, Manca M, van Zonneveld AJ, Jukema JW, Kraaijeveld A, Kuiper J, Pasterkamp G, Mees B, Sluimer JC, Cavill R, Karel JMH, Goossens P, Biessen EAL. Identification of a gene network driving the attenuated response to lipopolysaccharide of monocytes from hypertensive coronary artery disease patients. Front Immunol 2024; 15:1286382. [PMID: 38410507 PMCID: PMC10894924 DOI: 10.3389/fimmu.2024.1286382] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/24/2024] [Indexed: 02/28/2024] Open
Abstract
Introduction The impact of cardiovascular disease (CVD) risk factors, encompassing various biological determinants and unhealthy lifestyles, on the functional dynamics of circulating monocytes-a pivotal cell type in CVD pathophysiology remains elusive. In this study, we aimed to elucidate the influence of CVD risk factors on monocyte transcriptional responses to an infectious stimulus. Methods We conducted a comparative analysis of monocyte gene expression profiles from the CTMM - CIRCULATING CELLS Cohort of coronary artery disease (CAD) patients, at baseline and after lipopolysaccharide (LPS) stimulation. Gene co-expression analysis was used to identify gene modules and their correlations with CVD risk factors, while pivotal transcription factors controlling the hub genes in these modules were identified by regulatory network analyses. The identified gene module was subjected to a drug repurposing screen, utilizing the LINCS L1000 database. Results Monocyte responsiveness to LPS showed a highly significant, negative correlation with blood pressure levels (ρ< -0.4; P<10-80). We identified a ZNF12/ZBTB43-driven gene module closely linked to diastolic blood pressure, suggesting that monocyte responses to infectious stimuli, such as LPS, are attenuated in CAD patients with elevated diastolic blood pressure. This attenuation appears associated with a dampening of the LPS-induced suppression of oxidative phosphorylation. Finally, we identified the serine-threonine inhibitor MW-STK33-97 as a drug candidate capable of reversing this aberrant LPS response. Conclusions Monocyte responses to infectious stimuli may be hampered in CAD patients with high diastolic blood pressure and this attenuated inflammatory response may be reversed by the serine-threonine inhibitor MW-STK33-97. Whether the identified gene module is a mere indicator of, or causal factor in diastolic blood pressure and the associated dampened LPS responses remains to be determined.
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Affiliation(s)
- Chang Lu
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
- Institute for Computational Biomedicine, Faculty of Medicine, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Marjo M P C Donners
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
| | - Julius B J de Baaij
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
| | - Han Jin
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
- Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden
| | - Jeroen J T Otten
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
| | | | - Anton Jan van Zonneveld
- Department of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, Netherlands
| | - J Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands
- Netherlands Heart Institute, Utrecht, Netherlands
| | - Adriaan Kraaijeveld
- Department of Cardiology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Johan Kuiper
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, Netherlands
| | - Gerard Pasterkamp
- Circulatory Health Research Center, University Medical Center Utrecht, Utrecht, Netherlands
| | - Barend Mees
- Department of Vascular Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Judith C Sluimer
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
- Centre for Cardiovascular Science (CVS), University of Edinburgh, Edinburgh, United Kingdom
| | - Rachel Cavill
- Department of Advanced Computing Sciences, Maastricht University, Maastricht, Netherlands
| | - Joël M H Karel
- Department of Advanced Computing Sciences, Maastricht University, Maastricht, Netherlands
| | - Pieter Goossens
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
| | - Erik A L Biessen
- Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, Netherlands
- Institute for Molecular Cardiovascular Research, Klinikum RWTH Aachen, Aachen, Germany
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25
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Liu D, Zhao X, Zhang Q, Zhou F, Tong X. Bone marrow mesenchymal stem cell-derived exosomes promote osteoblast proliferation, migration and inhibit apoptosis by regulating KLF3-AS1/miR-338-3p. BMC Musculoskelet Disord 2024; 25:122. [PMID: 38336637 PMCID: PMC10854165 DOI: 10.1186/s12891-024-07236-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
AIM This study aimed to investigate the effect and mechanism of bone marrow mesenchymal stem cell-derived exosomes on osteoblast function. METHODS The expression of KLF3-AS1 and miR-338-3p in serum of fracture patients was detected by qRT-PCR. Exosomes from BMSCs were isolated by ultrafast centrifugation. MC3T3-E1 cells were cultured in vitro as experimental cells. Intracellular gene expression was regulated by transfection of si-KLF3-AS1 or miR-338-3p inhibitors. MTT assay, Transwell assay and flow cytometry were used to evaluate cell viability, migration, and apoptosis. The luciferase reporter gene was used to verify the targeting relationship between KLF3-AS1 and miR-338-3p. Bioinformatics analysis was used to identify the basic functions and possible enrichment pathways of miR-338-3p target genes. RESULTS The expressions of KLF3-AS1 and miR-338-3p in the serum of fracture patients were down-regulated and up-regulated, respectively. The expression of KLF3-AS1 was increased in MC3T3-E1 cells cultured with BMSCs-Exo, while the viability and migration ability of MC3T3-E1 cells were enhanced, and the apoptosis ability was weakened. Further analysis revealed miR-338-3p was the target gene of KLF3-AS1. The expression of miR-338-3p was downregulated in MC3T3-E1 cells cultured with BMSCs-Exo. Inhibition of miR-338-3p in MC3T3-E1 cells enhanced the viability and migration ability of MC3T3-E1 cells when cultured with BMSCs-Exo, while suppressing apoptosis. Bioinformatics analysis demonstrated that the target genes of miR-338-3p were predominantly localized at the axon's initiation site, involved in biological processes such as development and growth regulation, and mainly enriched in MAPK and ErbB signaling pathways. CONCLUSION In vitro, BMSCs-Exo exhibits the capacity to enhance proliferation and migration while inhibiting apoptosis of MC3T3-E1 cells, potentially achieved through modulation of KLF3-AS1 and miR-338-3p expression in MC3T3-E1 cells.
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Affiliation(s)
- Dacheng Liu
- Department of Orthopedics, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Tongshan District, Xuzhou, 221100, Jiangsu, China
| | - Xuechao Zhao
- Department of Orthopedics, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Tongshan District, Xuzhou, 221100, Jiangsu, China
| | - Qiang Zhang
- Department of Orthopedics, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Tongshan District, Xuzhou, 221100, Jiangsu, China
| | - Fei Zhou
- Operating Room, Xuzhou Central Hospital, Xuzhou, 221006, China
| | - Xiangyang Tong
- Department of Orthopedics, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Tongshan District, Xuzhou, 221100, Jiangsu, China.
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An FQ, Zhou G, Harland MT, Hussain W, Strainic MG, Jain MK, Medof ME. KLF4 and CD55 expression and function depend on each other. Front Immunol 2024; 14:1290684. [PMID: 38406578 PMCID: PMC10884306 DOI: 10.3389/fimmu.2023.1290684] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/30/2023] [Indexed: 02/27/2024] Open
Abstract
The transcription factor Kruppel-like factor 4 (KLF4) regulates the expression of immunosuppressive and anti-thrombotic proteins. Despite its importance in maintaining homeostasis, the signals that control its expression and the mechanism of its transactivation remain unclarified. CD55 [aka decay accelerating factor (DAF)], now known to be a regulator of T and B cell responses, biases between pro- and anti-inflammatory processes by controlling autocrine C3a and C5a receptor (C3ar1/C5ar1) signaling in cells. The similarity in CD55's and KLF4's regulatory effects prompted analyses of their functional relationship. In vascular endothelial cells (ECs), CD55 upregulation accompanied KLF4 expression via a p-CREB and CREB Binding Protein (CBP) mechanism. In both ECs and macrophages, CD55 expression was essential for KLF4's downregulation of pro-inflammatory/pro-coagulant proteins and upregulation of homeostatic proteins. Mechanistic studies showed that upregulation of KLF4 upregulated CD55. The upregulated CD55 in turn enabled the recruitment of p-CREB and CBP to KLF4 needed for its transcription. Activation of adenylyl cyclase resulting from repression of autocrine C3ar1/C5ar1 signaling by upregulated CD55 concurrently led to p-CREB and CBP recruitment to KLF4-regulated genes, thereby conferring KLF4's transactivation. Accordingly, silencing CD55 in statin-treated HUVEC disabled CBP transfer from the E-selectin to the eNOS promoter. Importantly, silencing CD55 downregulated KLF4's expression. It did the same in untreated HUVEC transitioning from KLF4low growth to KLF4hi contact inhibition. KLF4's and CD55's function in ECs and macrophages thus are linked via a novel mechanism of gene transactivation. Because the two proteins are co-expressed in many cell types, CD55's activity may be broadly tied to KLF4's immunosuppressive and antithrombotic activities.
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Affiliation(s)
- Feng-Qi An
- Institute of Pathology Case Western Reserve University and Cardiovascular Research Institute, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Guangjin Zhou
- Cardiovascular Research of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Micah T. Harland
- Institute of Pathology Case Western Reserve University and Cardiovascular Research Institute, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Wasim Hussain
- Institute of Pathology Case Western Reserve University and Cardiovascular Research Institute, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Michael G. Strainic
- Institute of Pathology Case Western Reserve University and Cardiovascular Research Institute, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Mukesh K. Jain
- Cardiovascular Research of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - M. Edward Medof
- Institute of Pathology Case Western Reserve University and Cardiovascular Research Institute, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
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Zhang Y, Du C, Wang W, Qiao W, Li Y, Zhang Y, Sheng S, Zhou X, Zhang L, Fan H, Yu Y, Chen Y, Liao Y, Chen S, Chang Y. Glucocorticoids increase adiposity by stimulating Krüppel-like factor 9 expression in macrophages. Nat Commun 2024; 15:1190. [PMID: 38331933 PMCID: PMC10853261 DOI: 10.1038/s41467-024-45477-8] [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: 12/08/2023] [Accepted: 01/25/2024] [Indexed: 02/10/2024] Open
Abstract
The mechanisms underlying glucocorticoid (GC)-induced obesity are poorly understood. Macrophages are the primary targets by which GCs exert pharmacological effects and perform critical functions in adipose tissue homeostasis. Here, we show that macrophages are essential for GC-induced obesity. Dexamethasone (Dex) strongly induced Krüppel-like factor 9 (Klf9) expression in macrophages. Similar to Dex, lentivirus-mediated Klf9 overexpression inhibits M1 and M2a markers expression, causing macrophage deactivation. Furthermore, the myeloid-specific Klf9 transgene promotes obesity. Conversely, myeloid-specific Klf9-knockout (mKlf9KO) mice are lean. Moreover, myeloid Klf9 knockout largely blocks obesity induced by chronic GC treatment. Mechanistically, GC-inducible KLF9 recruits the SIN3A/HDAC complex to the promoter regions of Il6, Ptgs2, Il10, Arg1, and Chil3 to inhibit their expression, subsequently reducing thermogenesis and increasing lipid accumulation by inhibiting STAT3 signaling in adipocytes. Thus, KLF9 in macrophages integrates the beneficial anti-inflammatory and adverse metabolic effects of GCs and represents a potential target for therapeutic interventions.
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Affiliation(s)
- Yinliang Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Chunyuan Du
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Wei Wang
- Key Laboratory of Biotechnology of Hubei Province, Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, China
| | - Wei Qiao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Yuhui Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Yujie Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Sufang Sheng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Xuenan Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Lei Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China
| | - Heng Fan
- Ningxia Key Laboratory of Stem Cell and Regenerative Medicine, General Hospital of Ningxia Medical University, Ningxia, China
| | - Ying Yu
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yong Chen
- Key Laboratory of Biotechnology of Hubei Province, Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, China
| | - Yunfei Liao
- Department of Endocrinology, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Shihong Chen
- Department of Endocrinology, The Second Hospital of Shandong University, Jinan, China.
| | - Yongsheng Chang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Tianjin Medical University, Tianjin, China.
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28
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Zou K, Wang C, Zhou C, Yang Y, Zeng Z. Early growth response 1/Krüppel-like factor 5 pathway inhibitor alleviates lipopolysaccharide-induced lung injury by promoting autophagy. Eur J Pharmacol 2024; 964:176294. [PMID: 38158112 DOI: 10.1016/j.ejphar.2023.176294] [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: 10/18/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Early transcription factors play critical roles in the development of acute lung injury/acute respiratory distress syndrome (ALI/ARDS). Early growth response 1 (EGR1) is a transcription factor essential for various biological processes, including regulation of metabolism, differentiation, and inflammation. However, its role in ALI has been poorly reported. In this study, we aimed to determine the effect of EGR1 on ALI to gain insights into the theoretical basis for further treatment of ALI. By employing concerted molecular biology techniques, we showed that EGR1 protein was upregulated in mice. EGR1 protein was upregulated in mice and human lung epithelial cells in response to lipopolysaccharide (LPS) stimulation. EGR1 knockdown promoted autophagy and reduced LPS-induced pro-inflammatory mediator production. EGR1 was preferentially bound to the GCGTGGGCG motif region and EGR1-binding peak-related genes were mainly enriched in autophagy and injury stress-related pathways. Additionally, EGR1 promoted Krüppel-like factor 5 (KLF5) transcription by binding to the KLF5 promoter region, and KLF5 knockdown significantly decreased inflammatory damage, suggesting that EGR1 promotes ALI progression by regulating KLF5 expression. Furthermore, ML264, an inhibitor of the EGR1/KLF5 pathway axis, displayed a protective role in ALI to reduce inflammation. In conclusion, our findings demonstrate the potential of EGR1 knockdown to inhibit KLF5 and promote autophagy, further reducing the inflammatory response to mitigate ALI/ARDS. The EGR1/KLF5 pathway axis may be a valuable therapeutic target for the treatment of ALI/ARDS.
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Affiliation(s)
- Kang Zou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Jiangxi Institute of Respiratory Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou City, 341000, Jiangxi Province, China
| | - Cheng Wang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China; Jiangxi Institute of Respiratory Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Chaoqi Zhou
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Yuting Yang
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China
| | - Zhenguo Zeng
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, 330006, Jiangxi Province, China.
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Rossi S, Barresi S, Colafati GS, Genovese S, Tancredi C, Costabile V, Patrizi S, Giovannoni I, Asioli S, Poliani PL, Gardiman MP, Cardoni A, Del Baldo G, Antonelli M, Gianno F, Piccirilli E, Catino G, Martucci L, Quacquarini D, Toni F, Melchionda F, Viscardi E, Zucchelli M, Dal Pos S, Gatti E, Liserre R, Schiavello E, Diomedi-Camassei F, Carai A, Mastronuzzi A, Gessi M, Giannini C, Novelli A, Onetti Muda A, Miele E, Alesi V, Alaggio R. PATZ1-Rearranged Tumors of the Central Nervous System: Characterization of a Pediatric Series of Seven Cases. Mod Pathol 2024; 37:100387. [PMID: 38007157 DOI: 10.1016/j.modpat.2023.100387] [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: 08/14/2023] [Revised: 10/28/2023] [Accepted: 11/06/2023] [Indexed: 11/27/2023]
Abstract
PATZ1-rearranged sarcomas are well-recognized tumors as part of the family of round cell sarcoma with EWSR1-non-ETS fusions. Whether PATZ1-rearranged central nervous system (CNS) tumors are a distinct tumor type is debatable. We thoroughly characterized a pediatric series of PATZ1-rearranged CNS tumors by chromosome microarray analysis (CMA), DNA methylation analysis, gene expression profiling and, when frozen tissue is available, optical genome mapping (OGM). The series consisted of 7 cases (M:F=1.3:1, 1-17 years, median 12). On MRI, the tumors were supratentorial in close relation to the lateral ventricles (intraventricular or iuxtaventricular), preferentially located in the occipital lobe. Two major histologic groups were identified: one (4 cases) with an overall glial appearance, indicated as "neuroepithelial" (NET) by analogy with the corresponding methylation class (MC); the other (3 cases) with a predominant spindle cell sarcoma morphology, indicated as "sarcomatous" (SM). A single distinct methylation cluster encompassing both groups was identified by multidimensional scaling analysis. Despite the epigenetic homogeneity, unsupervised clustering analysis of gene expression profiles revealed 2 distinct transcriptional subgroups correlating with the histologic phenotypes. Interestingly, genes implicated in epithelial-mesenchymal transition and extracellular matrix composition were enriched in the subgroup associated to the SM phenotype. The combined use of CMA and OGM enabled the identification of chromosome 22 chromothripsis in all cases suitable for the analyses, explaining the physical association of PATZ1 to EWSR1 or MN1. Six patients are currently disease-free (median follow-up 30 months, range 12-92). One patient of the SM group developed spinal metastases at 26 months from diagnosis and is currently receiving multimodal therapy (42 months). Our data suggest that PATZ1-CNS tumors are defined by chromosome 22 chromothripsis as causative of PATZ1 fusion, show peculiar MRI features (eg, relation to lateral ventricles, supratentorial frequently posterior site), and, although epigenetically homogenous, encompass 2 distinct histologic and transcriptional subgroups.
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Affiliation(s)
- Sabrina Rossi
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
| | - Sabina Barresi
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giovanna Stefania Colafati
- Imaging Department, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Neuroscience, Imaging and Clinical Sciences (DNISC), University "Gabriele D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Silvia Genovese
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Chantal Tancredi
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Valentino Costabile
- Multimodal Research Area, Unit of Microbiology and Diagnostics in Immunology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Sara Patrizi
- Onco-Hematology, Cell Therapy, Gene Therapies and Hemopoietic Transplant, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Isabella Giovannoni
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Sofia Asioli
- Department of Biomedical and Neuromotor Sciences (DIBINEM)-Surgical Pathology Section-Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Pietro Luigi Poliani
- Pathology Unit, San Raffaele Hospital Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - Marina Paola Gardiman
- Surgical Pathology and Cytopathology Unit, Department of Medicine, University Hospital of Padua, Padua, Italy
| | - Antonello Cardoni
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giada Del Baldo
- Onco-Hematology, Cell Therapy, Gene Therapies and Hemopoietic Transplant, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Manila Antonelli
- Department of Radiology, Oncology and Anatomic Pathology, University La Sapienza, Rome, Italy
| | - Francesca Gianno
- Department of Radiology, Oncology and Anatomic Pathology, University La Sapienza, Rome, Italy; IRCCS Neuromed, Pozzilli, Isernia, Italy
| | - Eleonora Piccirilli
- Imaging Department, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Neuroscience, Imaging and Clinical Sciences (DNISC), University "Gabriele D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Giorgia Catino
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Licia Martucci
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Denise Quacquarini
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Francesco Toni
- Neuroradiology Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Fraia Melchionda
- SSD Oncoematologia Pediatrica, IRCCS AOU Policlinico S.Orsola, Bologna, Italy
| | - Elisabetta Viscardi
- Department of Pediatrics, Azienda Ospedale-Università di Padova, Padova, Italy
| | - Mino Zucchelli
- Paediatric Neurosurgery, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Sandro Dal Pos
- Department of Radiology, Azienda Ospedale-Università di Padova, Padova, Italy
| | - Enza Gatti
- Department of Radiology, Neuroradiology Unit, ASST Spedali Civili University Hospital, Brescia, Italy
| | - Roberto Liserre
- Department of Radiology, Neuroradiology Unit, ASST Spedali Civili University Hospital, Brescia, Italy
| | - Elisabetta Schiavello
- Pediatric Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | | | - Andrea Carai
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Angela Mastronuzzi
- Onco-Hematology, Cell Therapy, Gene Therapies and Hemopoietic Transplant, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Marco Gessi
- Neuropathology Unit, Pathology Division, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica S.Cuore, Rome, Italy
| | - Caterina Giannini
- Department of Biomedical and Neuromotor Sciences (DIBINEM)-Surgical Pathology Section-Alma Mater Studiorum - University of Bologna, Bologna, Italy; Department of Anatomic Pathology, Mayo Clinic, Rochester, Minnesota
| | - Antonio Novelli
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Evelina Miele
- Onco-Hematology, Cell Therapy, Gene Therapies and Hemopoietic Transplant, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
| | - Viola Alesi
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Rita Alaggio
- Pathology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Medico-surgical Sciences and Biotechnologies, Sapienza University, Rome, Italy
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Tang L, Zhou X, Guo A, Han L, Pan S. Blockade of ZFX Alleviates Hypoxia-Induced Pulmonary Vascular Remodeling by Regulating the YAP Signaling. Cardiovasc Toxicol 2024; 24:158-170. [PMID: 38310188 DOI: 10.1007/s12012-023-09822-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/19/2023] [Indexed: 02/05/2024]
Abstract
High expression of the zinc finger X-chromosomal protein (ZFX) correlates with proliferation, aggressiveness, and development in many types of cancers. In the current report, we investigated the efficacy of ZFX in mouse pulmonary artery smooth muscle cells (PASMCs) proliferation during pulmonary arterial hypertension (PAH). PASMCs were cultured in hypoxic conditions. Real-time PCR and western blotting were conducted to detect the expression of ZFX. Cell proliferation, apoptosis, migration, and invasion were, respectively, measured by CCK-8, flow cytometry, wound scratchy, and transwell assays. Glycolytic ability was validated by the extracellular acidification rate and oxygen consumption rate. Transcriptome sequencing technology was used to explore the genes affected by ZFX knockdown. Luciferase and chromatin immunoprecipitation assays were utilized to verify the possible binding site of ZFX and YAP1. Mice were subjected to hypoxia for 21 days to induce PAH. The right ventricular systolic pressure (RVSP) was measured and ratio of RV/LV + S was calculated. The results show that ZFX was increased in hypoxia-induced PASMCs and mice. ZFX knockdown inhibited the proliferation, migration, and invasion of PASMC. Using RNA sequencing, we identify glycolysis and YAP as a key signaling of ZFX. ZFX knockdown inhibited Glycolytic ability. ZFX strengthened the transcription activity of YAP1, thereby regulating the YAP signaling. YAP1 overexpression reversed the effect of ZFX knockdown on hypoxia-treated PASMCs. In conclusion, ZFX knockdown protected mice from hypoxia-induced PAH injury. ZFX knockdown dramatically reduced RVSP and RV/(LV + S) in hypoxia-treated mice.
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Affiliation(s)
- Ling Tang
- Department of Pediatrics, Jinan Central Hospital, Shandong University, Jinan, 250013, Shandong, People's Republic of China
- Department of Pediatrics, Central Hosptial Affiliated to Shandong First Medical University, Jinan, 250013, Shandong, People's Republic of China
| | - Xiao Zhou
- Department of Pediatrics, Jinan Central Hospital, Shandong University, Jinan, 250013, Shandong, People's Republic of China
- Department of Pediatrics, Central Hosptial Affiliated to Shandong First Medical University, Jinan, 250013, Shandong, People's Republic of China
| | - Aili Guo
- Department of Pediatrics, Jinan Central Hospital, Shandong University, Jinan, 250013, Shandong, People's Republic of China
- Department of Pediatrics, Central Hosptial Affiliated to Shandong First Medical University, Jinan, 250013, Shandong, People's Republic of China
| | - Lizhang Han
- Department of Neurosurgery, Qilu Hospital of Shandong University, No.107 West Wenhua Road, Jinan, 250012, Shandong, People's Republic of China.
| | - Silin Pan
- Heart Center, Qingdao Women and Children's Hospital, Shandong University, No.217 West Liaoyang Road, Qingdao, 266034, Shandong, People's Republic of China.
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Zeng W, Pan J, Ye G. miR-135b Aggravates Fusobacterium nucleatum-Induced Cisplatin Resistance in Colorectal Cancer by Targeting KLF13. J Microbiol 2024; 62:63-73. [PMID: 38402337 DOI: 10.1007/s12275-023-00100-1] [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: 08/14/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 02/26/2024]
Abstract
Cisplatin resistance is the main cause of colorectal cancer (CRC) treatment failure, and the cause has been reported to be related to Fusobacterium nucleatum (Fn) infection. In this study, we explored the role of Fn in regulating cisplatin resistance of CRC cells and its underlying mechanism involved. The mRNA and protein expressions were examined by qRT-PCR and western blot. Cell proliferation and cell apoptosis were assessed using CCK8 and flow cytometry assays, respectively. Dual-luciferase reporter gene assay was adopted to analyze the molecular interactions. Herein, our results revealed that Fn abundance and miR-135b expression were markedly elevated in CRC tissues, with a favorable association between the two. Moreover, Fn infection could increase miR-135b expression via a concentration-dependent manner, and it also enhanced cell proliferation but reduced apoptosis and cisplatin sensitivity by upregulating miR-135b. Moreover, KLF13 was proved as a downstream target of miR-135b, of which overexpression greatly diminished the promoting effect of miR-135b or Fn-mediated cisplatin resistance in CRC cells. In addition, it was observed that upstream 2.5 kb fragment of miR-135b promoter could be interacted by β-catenin/TCF4 complex, which was proved as an effector signaling of Fn. LF3, a blocker of β-catenin/TCF4 complex, was confirmed to diminish the promoting role of Fn on miR-135b expression. Thus, it could be concluded that Fn activated miR-135b expression through TCF4/β-catenin complex, thereby inhibiting KLF13 expression and promoting cisplatin resistance in CRC.
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Affiliation(s)
- Wei Zeng
- Department of Gastroenterology, Changsha First Hospital, Changsha, 410005, Hunan, People's Republic of China.
| | - Jia Pan
- Department of Gastroenterology, Changsha First Hospital, Changsha, 410005, Hunan, People's Republic of China
| | - Guannan Ye
- Department of Gastroenterology, Changsha First Hospital, Changsha, 410005, Hunan, People's Republic of China
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Du X, Yang D, Yu X, Wei Y, Chen W, Zhai Y, Ma F, Zhang M, Wan S, Li Y, Yang X, Aierken A, Zhang N, Xu W, Meng Y, Li N, Liao M, Yuan X, Zhu H, Qu L, Zhou N, Bai X, Peng S, Yang F, Hua J. PLZF protein forms a complex with protein TET1 to target TCF7L2 in undifferentiated spermatogonia. Theriogenology 2024; 215:321-333. [PMID: 38128225 DOI: 10.1016/j.theriogenology.2023.12.015] [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: 04/13/2023] [Revised: 07/18/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
The transcription factor promyelocytic leukemia zinc finger (PLZF, also known as ZBTB16) is critical for the self-renewal of spermatogonial stem cells (SSCs). However, the function of PLZF in SSCs is not clear. Here, we found that PLZF acted as an epigenetic regulator of stem cell maintenance and self-renewal of germ cells. The PLZF protein interacts with the ten-eleven translocation 1 (TET1) protein and subsequently acts as a modulator to regulate the expression of self-renewal-related genes. Furthermore, Transcription Factor 7-like 2 (TCF7L2) is promoted by the coordination of PLZF and Tri-methylation of lysine 4 on histone H3 (H3K4me3). In addition, testicular single-cell sequencing indicated that TCF7L2 is commonly expressed in the PLZF cluster. We demonstrated that PLZF directly targets TCF7L2 and alters the landscape of histone methylation in the SSCs nucleus. Meanwhile, the RD domain and Zn finger domain of PLZF synergize with H3K4me3 and directly upregulate TCF7L2 expression at the transcriptional level. Additionally, we identified a new association between PLZF and the histone methyltransferase EZH2 at the genomic level. Our study identified a new association between PLZF and H3K4me3, established the novel PLZF&TET1-H3K4me3-TCF7L2 axis at the genomic level which regulates undifferentiated spermatogonia, and provided a platform for studying germ cell development in male domestic animals.
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Affiliation(s)
- Xiaomin Du
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China; Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, College of Life Sciences, Yulin University, Yulin, Shaanxi, 719000, China
| | - Donghui Yang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Xiuwei Yu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China; Department of Histo-embryology, Genetics and Developmental Biology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yudong Wei
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Wenbo Chen
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Yuanxin Zhai
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Fanglin Ma
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Mengfei Zhang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Shicheng Wan
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Yunxiang Li
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Xinchun Yang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Aili Aierken
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Ning Zhang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Wenjing Xu
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Yuan Meng
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Na Li
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China
| | - Mingzhi Liao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaole Yuan
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, College of Life Sciences, Yulin University, Yulin, Shaanxi, 719000, China
| | - Haijing Zhu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, College of Life Sciences, Yulin University, Yulin, Shaanxi, 719000, China
| | - Lei Qu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, College of Life Sciences, Yulin University, Yulin, Shaanxi, 719000, China
| | - Na Zhou
- People's Hospital of Jingbian County, Ningxia Medical University, Yuling, Shaanxi, 718500, China
| | - Xue Bai
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester, M13 9PL, UK
| | - Sha Peng
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China.
| | - Fan Yang
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China.
| | - Jinlian Hua
- College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, 712100, China.
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Cao Y, Li J, Zhang G, Fang H, Du Y, Liang Y. KLF15 transcriptionally activates LINC00689 to inhibit colorectal cancer development. Commun Biol 2024; 7:130. [PMID: 38273088 PMCID: PMC10810960 DOI: 10.1038/s42003-023-05757-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 12/29/2023] [Indexed: 01/27/2024] Open
Abstract
Colorectal cancer is a grievous health concern, we have proved long non-coding RNA LINC00689 is considered as a potential diagnosis biomarker for colorectal cancer, and it is necessary to further investigate its upstream and downstream mechanisms. Here, we show that KLF15, a transcription factor, exhibits the reduced expression in colorectal cancer. KLF15 suppresses the proliferative and metastatic capacities of colorectal cancer cells both in vitro and in vivo by transcriptionally activating LINC00689. Subsequently, LINC00689 recruits PTBP1 protein to enhance the stability of LATS2 mRNA in the cytoplasm. This stabilization causes the suppression of the YAP1/β-catenin pathway and its target downstream genes. Our findings highlight a regulatory network involving KLF15, LINC00689, PTBP1, LATS2, and the YAP1/β-catenin pathway in colorectal cancer, shedding light on potential therapeutic targets for colorectal cancer therapy.
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Affiliation(s)
- Yan Cao
- Department of Nuclear Medicine, Xiangya Third Hospital, Central South University, Changsha, 410013, Hunan Province, PR China
| | - Jian Li
- Department of Nuclear Medicine, Xiangya Third Hospital, Central South University, Changsha, 410013, Hunan Province, PR China
| | - Gang Zhang
- Department 2 of Gastrointestinal Surgery, Haikou Hospital Affiliated to Xiangya Medical College of Central South University, Haikou People's Hospital, Haikou, 570208, Hainan Province, PR China
| | - Hao Fang
- Department of Nuclear Medicine, Xiangya Third Hospital, Central South University, Changsha, 410013, Hunan Province, PR China
| | - Yongliang Du
- Department of Nuclear Medicine, Xiangya Third Hospital, Central South University, Changsha, 410013, Hunan Province, PR China
| | - Yan Liang
- Department of Nuclear Medicine, Xiangya Third Hospital, Central South University, Changsha, 410013, Hunan Province, PR China.
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Bai Q, Jin W, Chen F, Zhu J, Cao L, Yang Y, Zhong F, Li L. KLF8 Promotes the Survival of Lung Adenocarcinoma During Nutrient Deprivation by Regulating the Pentose Phosphate Pathway through SIRT2. FRONT BIOSCI-LANDMRK 2024; 29:27. [PMID: 38287804 DOI: 10.31083/j.fbl2901027] [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: 05/29/2023] [Revised: 09/08/2023] [Accepted: 10/07/2023] [Indexed: 01/31/2024]
Abstract
BACKGROUND The pentose phosphate pathway (PPP) is a critical metabolic pathway that generates NADPH and ribose-5-phosphate for nucleotide biosynthesis and redox homeostasis. In this study, we investigated a potential regulatory role for Krüppel-like factor 8 (KLF8) in the control of PPP in lung adenocarcinoma (LUAD) cells. METHODS Based on a comprehensive set of experimental approaches, including cell culture, molecular techniques, and functional assays, we revealed a novel mechanism by which KLF8 promotes the activation of glucose-6-phosphate dehydrogenase (G6PD), a component enzyme in the PPP. RESULTS Our findings demonstrate that KLF8 inhibits the acetylation of G6PD, leading to its increased enzymatic activity. Additionally, we observed that KLF8 activates the transcription of SIRT2, which has been implicated in regulating G6PD acetylation. These results highlight the interplay between KLF8, G6PD, and protein acetylation in the regulation of PPP in LUAD. CONCLUSIONS Understanding the intricate molecular mechanisms underlying the metabolic reprogramming driven by KLF8 in lung cancer provides valuable insights into potential therapeutic strategies targeting the PPP. This study emphasizes the significance of KLF8 as a key modulator of metabolic pathways and indicates the potential of targeting the KLF8-G6PD axis for lung cancer treatment.
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Affiliation(s)
- Qiaohong Bai
- Department of Respiratory, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, 210000 Nanjing, Jiangsu, China
| | - Wenfang Jin
- Department of Respiratory, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, 210000 Nanjing, Jiangsu, China
| | - Futao Chen
- Department of Respiratory, The Second Hospital of Lianyungang, 222000 Lianyungang, Jiangsu, China
| | - Jiang Zhu
- Department of Respiratory, The Second Hospital of Lianyungang, 222000 Lianyungang, Jiangsu, China
| | - Lifeng Cao
- Department of Respiratory, The Second Hospital of Lianyungang, 222000 Lianyungang, Jiangsu, China
| | - Yang Yang
- Department of Respiratory, The Second Hospital of Lianyungang, 222000 Lianyungang, Jiangsu, China
| | - Fukuan Zhong
- Department of Respiratory, The Second Hospital of Lianyungang, 222000 Lianyungang, Jiangsu, China
| | - Li Li
- Department of Respiratory, Nanjing Chest Hospital, Affiliated Nanjing Brain Hospital, Nanjing Medical University, 210000 Nanjing, Jiangsu, China
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Wang J, Liu J, Yuan C, Yang B, Pang H, Chen K, Feng J, Deng Y, Zhang X, Li W, Wang C, Xie J, Zhang J. Palmitic acid-activated GPRs/KLF7/CCL2 pathway is involved in the crosstalk between bone marrow adipocytes and prostate cancer. BMC Cancer 2024; 24:75. [PMID: 38221626 PMCID: PMC10789002 DOI: 10.1186/s12885-024-11826-5] [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: 03/31/2023] [Accepted: 01/03/2024] [Indexed: 01/16/2024] Open
Abstract
BACKGROUND Obesity-induced abnormal bone marrow microenvironment is one of the important risk element for bone metastasis in prostate cancer (PCa). The present study aimed to determine whether obesity-induced elevation in palmitic acid (PA), which is the most abundant of the free fatty acids (FFAs), increased CCL2 via the GPRs/KLF7 pathway in bone marrow adipocytes (BMA) to facilitate PCa growth and metastasis. METHODS We constructed a bone-tumor bearing mouse model with obesity through high-fat diet, and observed the tumor formation ability of PCa cells. In vitro, observe the effect of PA on the expression level of CCL2 in BMA through GPRs/KLF7 signaling pathway. After co-culture of BMA and PCa cells, CCK8 assay and transwell experiment were used to detect the changes in biological behavior of PCa cells stimulated by BMA. RESULTS The BMA distribution in the bone marrow cavity of BALB/c nude mice fed with the high-fat diet (HFD) was evidently higher than that in the mice fed with the normal diet (ND). Moreover, HFD-induced obesity promoted KLF7/CCL2 expression in BMA and PCa cell growth in the bone marrow cavity of the mice. In the vitro experiment, a conditioned medium with increased CCL2 obtained from the BMA cultured with PA (CM-BMA-PA) was used for culturing the PCa cell lines, which evidently enhanced the proliferation, invasion, and migration ability. KLF7 significantly increased the CCL2 expression and secretion levels in BMA by targeting the promoter region of the CCL2 gene. In addition, GPR40/120 engaged in the PA-induced high KLF7/CCL2 levels in BMA to facilitate the malignant progression of PC-3 cells. CONCLUSIONS PA-activated GPRs/KLF7/CCL2 pathway in BMA facilitates prostate cancer growth and metastasis.
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Affiliation(s)
- Jingzhou Wang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
- Laboratory of Xinjiang Endemic and Ethic Diseases, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Jie Liu
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
- Laboratory of Xinjiang Endemic and Ethic Diseases, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Chenggang Yuan
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Bingqi Yang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Huai Pang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Keru Chen
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Jiale Feng
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Yuchun Deng
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Xueting Zhang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Wei Li
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China
| | - Cuizhe Wang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China.
- Laboratory of Xinjiang Endemic and Ethic Diseases, Shihezi University, Shihezi, 832000, Xinjiang, China.
| | - Jianxin Xie
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China.
- Laboratory of Xinjiang Endemic and Ethic Diseases, Shihezi University, Shihezi, 832000, Xinjiang, China.
| | - Jun Zhang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, 832000, Xinjiang, China.
- Laboratory of Xinjiang Endemic and Ethic Diseases, Shihezi University, Shihezi, 832000, Xinjiang, China.
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Wu S, Zhu J, Jiang T, Cui T, Zuo Q, Zheng G, Li G, Zhou J, Chen X. Long non-coding RNA ACTA2-AS1 suppresses metastasis of papillary thyroid cancer via regulation of miR-4428/KLF9 axis. Clin Epigenetics 2024; 16:10. [PMID: 38195623 PMCID: PMC10775490 DOI: 10.1186/s13148-023-01622-6] [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: 09/11/2023] [Accepted: 12/31/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Metastasis is the primary cause of recurrence and death in patients with papillary thyroid carcinoma (PTC). LncRNA ACTA2-AS1, a long non-coding RNA, acts as a tumor suppressor in multiple types of human malignancies, while the role of ACTA2-AS1 in PTC metastasis remains unclear. METHODS The ACTA2-AS1 expression in PTC tissues was analyzed. The sponged roles of ACTA2-AS1 via miR-4428/KLF9 axis were identified using starBase tool. The function of ACTA2-AS1 in PTC was performed with in vitro and in vivo experiments. The correlation between DNA methylation and mRNA expressions of these gene in the TCGA dataset was explored. RESULTS ACTA2-AS1 expression was downregulated in PTC tissues without metastasis and further decreased in PTC tissues with lymph node metastasis compared with that in normal tissues. Functionally, the overexpression of ACTA2-AS1 inhibited the growth, proliferation, and invasion of PTC cells, whereas its depletion exerted opposite effect. In vivo, ACTA2-AS1 expression inhibited PTC metastasis. Furthermore, ACTA2-AS1 acted as a competing endogenous RNA for miR-4428, thereby positively regulating the expression of miR-4428 target gene, KLF9. Finally, miR-4428 overexpression enhanced invasive potential of PTC cells and significantly weakened the effects of ACTA2-AS1 on promotion and inhibition of KLF9 expression as well as invasive ability of PTC cells, respectively. In the TCGA dataset, the methylation level of ACTA2-AS1 was significantly correlated with its mRNA expression (r = 0.21, p = 2.1 × e-6). CONCLUSIONS Our findings demonstrate that ACTA2-AS1 functions as a tumor suppressor in PTC progression at least partly by regulating the miR-4428-dependent expression of KLF9.
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Affiliation(s)
- Shuhui Wu
- Department of Otorhinolaryngology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Jingjing Zhu
- Department of Otorhinolaryngology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Tingting Jiang
- Department of Otorhinolaryngology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Ting Cui
- Department of Thyroid Surgery, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Qi Zuo
- Department of Otorhinolaryngology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Guibin Zheng
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Department of Thyroid Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China
| | - Guojun Li
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jieyu Zhou
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai, China.
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
| | - Xiang Chen
- Department of Thyroid Surgery, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Baoshan Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.
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Malgulwar PB, Danussi C, Dharmaiah S, Johnson W, Singh A, Rai K, Rao A, Huse JT. Sirtuin 2 inhibition modulates chromatin landscapes genome-wide to induce senescence in ATRX-deficient malignant glioma. Neuro Oncol 2024; 26:55-67. [PMID: 37625115 PMCID: PMC10769000 DOI: 10.1093/neuonc/noad155] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/04/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Functional inactivation of ATRX characterizes large subgroups of malignant gliomas in adults and children. ATRX deficiency in glioma induces widespread chromatin remodeling, driving transcriptional shifts and oncogenic phenotypes. Effective strategies to therapeutically target these broad epigenomic sequelae remain undeveloped. METHODS We utilized integrated multiomics and the Broad Institute Connectivity Map (CMAP) to identify drug candidates that could potentially revert ATRX-deficient transcriptional changes. We then employed disease-relevant experimental models to evaluate functional phenotypes, coupling these studies with epigenomic profiling to elucidate molecular mechanism(s). RESULTS CMAP analysis and transcriptional/epigenomic profiling implicated the Class III HDAC Sirtuin2 (SIRT2) as a central mediator of ATRX-deficient cellular phenotypes and a driver of unfavorable prognosis in ATRX-deficient glioma. SIRT2 inhibitors reverted Atrx-deficient transcriptional signatures in murine neuroepithelial progenitor cells (mNPCs), impaired cell migration in Atrx/ATRX-deficient mNPCs and human glioma stem cells (GSCs), and increased expression of senescence markers in glioma models. Moreover, SIRT2 inhibition impaired growth and increased senescence in ATRX-deficient GSCs in vivo. These effects were accompanied by genome-wide shifts in enhancer-associated H3K27ac and H4K16ac marks, with the latter in particular demonstrating compelling transcriptional links to SIRT2-dependent phenotypic reversals. Motif analysis of these data identified the transcription factor KLF16 as a mediator of phenotype reversal in Atrx-deficient cells upon SIRT2 inhibition. CONCLUSIONS Our findings indicate that SIRT2 inhibition selectively targets ATRX-deficient gliomas for senescence through global chromatin remodeling, while demonstrating more broadly a viable approach to combat complex epigenetic rewiring in cancer.
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Affiliation(s)
- Prit Benny Malgulwar
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Carla Danussi
- Sanofi, Research and Development, Cambridge, Massachusetts, USA
| | - Sharvari Dharmaiah
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - William Johnson
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Anand Singh
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kunal Rai
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Arvind Rao
- Departments of Biostatistics, Computational Medicine and Bioinformatics, and Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Jason T Huse
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Song ZK, Zhao L, Liu DS, Zhao LN, Peng QB, Li ZY, Wu JY, Chen SK, Huang FZ, Chen X, Lin TX, Guan L, Meng WP, Guo JW, Su YN, He XX, Liang SJ, Zhu P, Zheng SY, Du SL, Liu X. Macrophage KLF15 prevents foam cell formation and atherosclerosis via transcriptional suppression of OLR-1. J Mol Cell Cardiol 2024; 186:57-70. [PMID: 37984156 DOI: 10.1016/j.yjmcc.2023.11.006] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 11/09/2023] [Accepted: 11/12/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Macrophage-derived foam cells are a hallmark of atherosclerosis. Scavenger receptors, including lectin-like oxidized low-density lipoprotein (LDL) receptor-1 (OLR-1), are the principal receptors responsible for the uptake and modification of LDL, facilitating macrophage lipid load and the uptake of oxidized LDL by arterial wall cells. Krüppel-like factor 15 (KLF15) is a transcription factor that regulates the expression of genes by binding to the promoter during transcription. Therefore, this study aimed to investigate the precise role of macrophage KLF15 in atherogenesis. METHODS We used two murine models of atherosclerosis: mice injected with an adeno-associated virus (AAV) encoding the Asp374-to-Tyr mutant version of human PCSK9, followed by 12 weeks on a high-fat diet (HFD), and ApoE-/-- mice on a HFD. We subsequently injected mice with AAV-KLF15 and AAV-LacZ to assess the role of KLF15 in the development of atherosclerosis in vivo. Oil Red O, H&E, and Masson's trichome staining were used to evaluate atherosclerotic lesions. Western blots and RT-qPCR were used to assess protein and mRNA levels, respectively. RESULTS We determined that KLF15 expression was downregulated during atherosclerosis formation, and KLF15 overexpression prevented atherosclerosis progression. KLF15 expression levels did not affect body weight or serum lipid levels in mice. However, KLF15 overexpression in macrophages prevented foam cell formation by reducing OLR-1-meditated lipid uptake. KLF15 directly targeted and transcriptionally downregulated OLR-1 levels. Restoration of OLR-1 reversed the beneficial effects of KLF15 in atherosclerosis. CONCLUSION Macrophage KLF15 transcriptionally downregulated OLR-1 expression to reduce lipid uptake, thereby preventing foam cell formation and atherosclerosis. Thus, our results suggest that KLF15 is a potential therapeutic target for atherosclerosis.
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Affiliation(s)
- Zheng-Kun Song
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Li Zhao
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - De-Shen Liu
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ling-Na Zhao
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Qin-Bao Peng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zi-Yao Li
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, China
| | - Jia-Yong Wu
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Si-Kai Chen
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Fang-Ze Huang
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xing Chen
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Tian-Xiao Lin
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Li Guan
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Wei-Peng Meng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jia-Wei Guo
- Department of Pharmacology, School of Medicine, Yangtze University, Jingzhou 434023, China
| | - Yue-Nian Su
- Department of Rehabilitation, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xiao-Xia He
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Si-Jia Liang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Peng Zhu
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Shao-Yi Zheng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Song-Lin Du
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Xiu Liu
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Han D, Huang M, Chang Z, Sun W. KLF15 Transcriptionally Activates ATG14 to Promote Autophagy and Attenuate Damage of ox-LDL-Induced HAECs. Mol Biotechnol 2024; 66:112-122. [PMID: 37043109 DOI: 10.1007/s12033-023-00742-x] [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: 01/05/2023] [Accepted: 03/27/2023] [Indexed: 04/13/2023]
Abstract
Kruppel-like factor 15 (KLF15) is involved in many cardiovascular diseases and is abnormally expressed in atherosclerosis (AS), but the regulatory mechanism of KLF15 in AS has not been reported so far. RT-qPCR was used to detect the expression of KLF15 and ATG14 in AS patients. Subsequently, human aortic endothelial cells (HAECs) were induced by oxidized low densitylipoprotein (ox-LDL), and the expression of KLF15 in model cells was detected. KLF15 was overexpressed in cells by lipofection transfection, and then CCK8, flow cytometry, Western blot, ELISA, and related assay kits were used to detect cell viability, apoptosis, inflammatory response as well as oxidative stress, respectively. The targeted regulatory relationship between KLF15 and autophagy-related 14 (ATG14) was detected by ChIP and luciferase reporter assays. Following ATG14 silencing in KLF15-overexpressing cells, immunofluorescence and Western blot were used to detect the autophagy. Finally, after the addition of 3-Methyladenine (3-MA), an autophagy inhibitor, the aforementioned experiments were conducted again to further explore the mechanism. The expression of KLF15 and ATG14 were decreased in AS patients and ox-LDL-induced HAECs. Overexpression of KLF15 protected ox-LDL-induced HAECs from damage, which might be achieved through transcriptional regulation of ATG14. In addition, KLF15 could promote autophagy through transcriptional activation of ATG14. KLF15 transcriptionally activated ATG14 to promote autophagy and attenuate damage of ox-LDL-induced HAECs.
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Affiliation(s)
- Dong Han
- Department of Emergency, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214125, Jiangsu, China
| | - Ming Huang
- Department of Emergency, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214125, Jiangsu, China
| | - Zhen Chang
- Department of Emergency, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214125, Jiangsu, China
| | - Wei Sun
- Department of Emergency, Affiliated Hospital of Jiangnan University, No. 1000 Hefeng Road, Wuxi, 214125, Jiangsu, China.
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Ikuta K, Hayashi S, Kikuchi K, Fujita M, Anjiki K, Onoi Y, Tachibana S, Suda Y, Wada K, Kuroda Y, Nakano N, Maeda T, Matsumoto T, Hosooka T, Ogawa W, Kuroda R. Krüppel-like factor 15 deficiency exacerbates osteoarthritis through reduced expression of peroxisome proliferator-activated receptor gamma signaling in mice. Osteoarthritis Cartilage 2024; 32:28-40. [PMID: 37648149 DOI: 10.1016/j.joca.2023.08.009] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/01/2023]
Abstract
OBJECTIVE Krüppel-like zinc finger transcription factors (KLFs) play diverse roles in mammalian cell differentiation and development. In this study, we investigated the function of KLF15 in the progression of osteoarthritis (OA). METHODS 0Destabilization of the medial meniscus (DMM) surgery was performed in 10-week-old male wild-type control (WT) mice and cartilage-specific KLF15 knockout (KO) mice. Histological analysis, immunohistochemistry, and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick-end labeling staining were performed. Morphological changes were measured using microcomputed tomography. Six mice from each group were analyzed (total number of mice analyzed: 60). In vitro, immunofluorescence, quantitative reverse transcription-polymerase chain reaction, and western blot analyses were performed. RESULTS KLF15 KO DMM mice exhibited significant cartilage degradation compared to WT mice. According to the Osteoarthritis Research Society International cartilage OA-histopathology scoring system, the mean sum score in KLF15 KO mice was significantly higher than that in WT mice at 8 weeks after surgery. Immunohistochemistry results revealed KLF15 KO mice exhibited reduced peroxisome proliferator-activated receptor gamma (PPARγ) expression, increased pIKKα/β, a disintegrin-like and metalloproteinase with thrombospondin motifs (ADAMTS) 5, and Matrix metalloproteinases (MMP13) expression, and reduced Forkhead box O (FOXO1) and Light chain 3B (LC3B) expression. Inhibition of PPARγ phosphorylation accelerated the effects of interleukin (IL) 1β-treatment in both KLF15 KO and WT chondrocytes, and activation of PPARγ expression canceled the IL1β-induced catabolic effects. CONCLUSION Our results indicated that the OA phenotype of KLF15 KO DMM mice was influenced by reduced PPARγ expression, including enhanced pIKKα/β, ADAMTS5, and MMP13 expression, reduced autophagy, and increased apoptosis. KLF15 regulation may constitute a possible therapeutic strategy for the treating OA.
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Affiliation(s)
- Kemmei Ikuta
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Kenichi Kikuchi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masahiro Fujita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kensuke Anjiki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuma Onoi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shotaro Tachibana
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshihito Suda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kensuke Wada
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuichi Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Naoki Nakano
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Toshihisa Maeda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tetsuya Hosooka
- Laboratory of Nutritional Physiology, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan
| | - Wataru Ogawa
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Fatima N, Saif Ur Rahman M, Qasim M, Ali Ashfaq U, Ahmed U, Masoud MS. Transcriptional Factors Mediated Reprogramming to Pluripotency. Curr Stem Cell Res Ther 2024; 19:367-388. [PMID: 37073151 DOI: 10.2174/1574888x18666230417084518] [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: 12/18/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 04/20/2023]
Abstract
A unique kind of pluripotent cell, i.e., Induced pluripotent stem cells (iPSCs), now being targeted for iPSC synthesis, are produced by reprogramming animal and human differentiated cells (with no change in genetic makeup for the sake of high efficacy iPSCs formation). The conversion of specific cells to iPSCs has revolutionized stem cell research by making pluripotent cells more controllable for regenerative therapy. For the past 15 years, somatic cell reprogramming to pluripotency with force expression of specified factors has been a fascinating field of biomedical study. For that technological primary viewpoint reprogramming method, a cocktail of four transcription factors (TF) has required: Kruppel-like factor 4 (KLF4), four-octamer binding protein 34 (OCT3/4), MYC and SOX2 (together referred to as OSKM) and host cells. IPS cells have great potential for future tissue replacement treatments because of their ability to self-renew and specialize in all adult cell types, although factor-mediated reprogramming mechanisms are still poorly understood medically. This technique has dramatically improved performance and efficiency, making it more useful in drug discovery, disease remodeling, and regenerative medicine. Moreover, in these four TF cocktails, more than 30 reprogramming combinations were proposed, but for reprogramming effectiveness, only a few numbers have been demonstrated for the somatic cells of humans and mice. Stoichiometry, a combination of reprogramming agents and chromatin remodeling compounds, impacts kinetics, quality, and efficiency in stem cell research.
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Affiliation(s)
- Nazira Fatima
- Laboratory Animal Center, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
| | - Muhammad Saif Ur Rahman
- Institute of Advanced Studies, Shenzhen University, Shenzhen, 518060, China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Muhammad Qasim
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, 38000, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, 38000, Pakistan
| | - Uzair Ahmed
- EMBL Partnership Institute for Genome Editing Technologies, Vilnius University, Vilnius, 10257, Lithuania
| | - Muhammad Shareef Masoud
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, 38000, Pakistan
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Zhang Z, Jiang X, Li K, Qiao S, Li M, Mei Y, Ding L, Lv Q, Ding Y, Zhao Y, Lv G, Tan G, Yang H, Li G, Gao X, Liu M. KLF7 promotes colon adenocarcinoma progression through the PDGFB signaling pathway. Int J Biol Sci 2024; 20:387-402. [PMID: 38164176 PMCID: PMC10750276 DOI: 10.7150/ijbs.86385] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 11/06/2023] [Indexed: 01/03/2024] Open
Abstract
Colon adenocarcinoma (COAD) is the most common malignancy of the digestive tract, which is characterized by a dismal prognosis. No effective treatment has been established presently, thus there is an urgent need to understand the mechanisms driving COAD progression in order to develop effective therapeutic approaches and enhance clinical outcomes. In this study, we found that KLF7 is overexpressed in COAD tissues and correlated with clinicopathological features of COAD. Both gain-of-function and loss-of-function experiments have unequivocally demonstrated that overexpression of KLF7 promotes the growth and metastasis of COAD in vitro and in vivo, while KLF7 knockdown attenuated these effects. Mechanistically, our findings reveal that KLF7 can specifically bind to the promoter region of PDGFB (TGGGTGGAG), thus promoting the transcription of PDGFB and increasing its secretion. Subsequently, secreted PDGFB facilitates the progression of COAD by activating MAPK/ERK, PI3K/AKT, and JAK/STAT3 signaling pathways through PDGFRβ. Additionally, we found that sunitinib can block PDGFB signaling and inhibit COAD progression, offering a promising therapeutic strategy for COAD treatment.
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Affiliation(s)
- Zhicheng Zhang
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Xiaochen Jiang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, 150001, China
- Editorial Board of Harbin Medical University, Harbin Medical University, Harbin 150001, China
| | - Kai Li
- School of Medicine and Health, Harbin Institute of Technology, Harbin, 150001, China
| | - Shupei Qiao
- Heilongjiang Key Laboratory of Children Development and Genetic Research, Harbin Medical University, Harbin,150001, China
| | - Mengmeng Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Yu Mei
- Drug Engineering and Technology Research Center, Harbin University of Commerce, Harbin, 150001, China
| | - Lixian Ding
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Qiang Lv
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yike Ding
- St John's College William Nicholls Drive, Old St Mellons, Cardiff, CF35YX, United Kingdom
| | - Yunhan Zhao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, 150001, China
| | - Guixiang Lv
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, 150001, China
| | - Gang Tan
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Huanjie Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Guodong Li
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, 150001, China
| | - Ming Liu
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin,150001, China
- Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
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Takeuchi Y, Murayama Y, Aita Y, Mehrazad Saber Z, Karkoutly S, Tao D, Katabami K, Ye C, Shikama A, Masuda Y, Izumida Y, Miyamoto T, Matsuzaka T, Kawakami Y, Shimano H, Yahagi N. GR-KLF15 pathway controls hepatic lipogenesis during fasting. FEBS J 2024; 291:259-271. [PMID: 37702262 DOI: 10.1111/febs.16957] [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: 05/28/2023] [Revised: 08/10/2023] [Accepted: 09/11/2023] [Indexed: 09/14/2023]
Abstract
During periods of fasting, the body undergoes a metabolic shift from carbohydrate utilization to the use of fats and ketones as an energy source, as well as the inhibition of de novo lipogenesis and the initiation of gluconeogenesis in the liver. The transcription factor sterol regulatory element-binding protein-1 (SREBP-1), which plays a critical role in the regulation of lipogenesis, is suppressed during fasting, resulting in the suppression of hepatic lipogenesis. We previously demonstrated that the interaction of fasting-induced Kruppel-like factor 15 (KLF15) with liver X receptor serves as the essential mechanism for the nutritional regulation of SREBP-1 expression. However, the underlying mechanisms of KLF15 induction during fasting remain unclear. In this study, we show that the glucocorticoid receptor (GR) regulates the hepatic expression of KLF15 and, subsequently, lipogenesis through the KLF15-SREBP-1 pathway during fasting. KLF15 is necessary for the suppression of SREBP-1 by GR, as demonstrated through experiments using KLF15 knockout mice. Additionally, we show that GR is involved in the fasting response, with heightened binding to the KLF15 enhancer. It has been widely known that the hypothalamic-pituitary-adrenal (HPA) axis regulates the secretion of glucocorticoids and plays a significant role in the metabolic response to undernutrition. These findings demonstrate the importance of the HPA-axis-regulated GR-KLF15 pathway in the regulation of lipid metabolism in the liver during fasting.
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Affiliation(s)
- Yoshinori Takeuchi
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Yuki Murayama
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yuichi Aita
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Zahra Mehrazad Saber
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Samia Karkoutly
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Duhan Tao
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Kyoka Katabami
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Chen Ye
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Akito Shikama
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yukari Masuda
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yoshihiko Izumida
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takafumi Miyamoto
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takashi Matsuzaka
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yasushi Kawakami
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hitoshi Shimano
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Naoya Yahagi
- Nutrigenomics Research Group, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, Jichi Medical University, Shimotsuke, Japan
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Qu X, Xu C, Yang W, Li Q, Tu S, Gao C. KLF5 inhibits the migration and invasion in cervical cancer cell lines by regulating SNAI1. Cancer Biomark 2024; 39:231-243. [PMID: 38217587 DOI: 10.3233/cbm-230175] [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] [Indexed: 01/15/2024]
Abstract
BACKGROUND Epithelial-mesenchymal transition (EMT) is an important biological process by which malignant tumor cells to acquire migration and invasion abilities. This study explored the role of KLF5 in the EMT process of in cervical cancer cell lines. OBJECTIVE Krüpple-like factor 5 (KLF5) is a basic transcriptional factor that plays a key role in cell-cycle arrest and inhibition of apoptosis. However, the molecular mechanism by which KLF5 mediates the biological functions of cervical cancer cell lines has not been elucidated. Here, we focus on the potential function of ELF5 in regulating the EMT process in in vitro model of cervical cancer cell lines. METHOD Western-blot and real-time quantitative PCR were used to detect the expression of EMT-related genes in HeLa cells. MTT assays, cell scratch and Transwell assays were used to assess HeLa cells proliferation and invasion capability. Using the bioinformatics tool JASPAR, we identified a high-scoring KLF5-like binding sequence in the SNAI1 gene promoter. Luciferase reporter assays was used to detect transcriptional activity for different SNAI1 promoter truncates. RESULT After overexpressing the KLF5 gene in HeLa cells, KLF5 not only significantly inhibited the invasion and migration of HeLa cells, but also increased the expression of E-cadherin and decreased the expression of N-cadherin and MMP9. In addition, the mRNA expression of upstream regulators of E-cadherin, such as SNAI1, SLUG, ZEB1/2 and TWIST1 was also decreased. Furthermore, KLF5 inhibiting the expression of the SNAI1 gene via binding its promoter region, and the EMT of Hela cells was promoted after overexpression of the SNAI1 gene. CONCLUSION These results indicate that KLF5 can downregulate the EMT process of HeLa cells by decreasing the expression of the SNAI1 gene, thereby inhibiting the migration and invasion of HeLa cervical cancer cells.
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Affiliation(s)
- Xinjian Qu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Chang Xu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Wenbo Yang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Dalian, Liaoning, China
| | - Qianqian Li
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Dalian, Liaoning, China
| | - Simei Tu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Dalian, Liaoning, China
| | - Chenghai Gao
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
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Wan B, Zhang W, Deng X, Lu Y, Zhang Z, Yang Y. Molecular Expression and Prognostic Implications of Krüppel-Like Factor 3 (KLF3) in Clear Cell Renal Cell Carcinoma. Crit Rev Eukaryot Gene Expr 2024; 34:45-59. [PMID: 38073441 DOI: 10.1615/critreveukaryotgeneexpr.2023049010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
A major subtype of renal cancer is clear cell renal cell carcinoma (ccRCC). Krüppel-like factor 3 (KLF3) dysfunction is also revealed leading to poor prognosis in multiple cancer types. However, dysregulation and molecular dynamics of KLF3 underlying ccRCC progression still remains elusive. Here KLF3 gene and protein expressions in ccRCC were explored using data cohorts from The Cancer Genome Atlas (TCGA), Human Protein Atlas (HPA), Clinical Proteomic Tumor Analysis Consortium (CPTAC) and verified them in our patient cohort. Correlations of KLF3 expression with clinicopathological features, epigenetic modification, and immune microenvironment characteristics were further investigated. KLF3 was significantly down-regulated expressed in ccRCC tissues compared to adjacent normal controls. Adverse pathological parameters and poor prognosis were associated with lower expression of KLF3. Mechanically, KLF3 regulation was mainly attributed to CpG island methylation. KLF3-high expression subgroup was significantly enriched in cell signaling pathways most associated with EMT markers, angiogenesis, inflammatory response, apoptosis, TGF-β, degradation of ECM, G2M checkpoint, and PI3K-AKT-mTOR. Based on GDSC database, KLF3 upregulation was identified to be associated with higher sensitivities towards PI3K-Akt-mTOR pathway inhibitors such as PI-103, PIK-93, and OSI-027. In addition, patients with down-regulated KLF3 expressions were found more sensitive towards Trametinib, Cetuximab, and Erlotinib. Collectively, our findings suggest that KLF3 may act as a suitable biomarker for prognosis prediction, tumor microenvironment (TME) phenotype identification, thereby helping ccRCC patients to make better therapeutic decisions.
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Affiliation(s)
- Bin Wan
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
| | - Wensheng Zhang
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
| | - Xinxi Deng
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
| | - Yigang Lu
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
| | - Zhuo Zhang
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
| | - Yang Yang
- Department of Urology, The First People's Hospital of Jiujiang in Jiangxi Province, Jiujiang City, 332000, Jiangxi Province, China
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Li HR, Chen GL, Fang XL, Cai XJ, Xu RL, Li DD, Zhang ZW. Circ_0068481 Affects the Human Pulmonary Artery Smooth Muscle Cells' Progression by miR-361-3p/KLF5 Axis. Am J Hypertens 2024; 37:33-45. [PMID: 37738301 DOI: 10.1093/ajh/hpad028] [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: 09/13/2022] [Revised: 01/04/2023] [Accepted: 06/28/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND Uncontrolled proliferation of pulmonary artery smooth muscle cells (PASMCs) contributes to the pathogenesis of pulmonary arterial hypertension (PAH). In this work, we defined the precise part of circ_0068481 in PASMC proliferation and migration induced by hypoxia. We hypothesized that circ_0068481 enhanced hypoxia-induced PASMC proliferation, invasion, and migration through the microRNA (miR)-361-3p/Krüppel-like factor 5 (KLF5) pathway. METHODS Human PASMCs (hPASMCs) were exposed to hypoxic (3% O2) conditions. Circ_0068481, miR-361-3p, and KLF5 levels were gauged by qRT-PCR and western blot. Cell viability, proliferation, invasion, and migration were detected by XTT, EdU incorporation, transwell, and wound-healing assays, respectively. Dual-luciferase reporter, RNA immunoprecipitation, and RNA pull-down assays were performed to confirm the direct relationship between miR-361-3p and circ_0068481 or KLF5. RESULTS Circ_0068481 expression was increased in the serum of PAH patients and hypoxia-induced hPASMCs. Downregulation of circ_0068481 attenuated hypoxia-induced promotion in hPASMC proliferation, invasion, and migration. Circ_0068481 directly targeted miR-361-3p, and miR-361-3p downregulation reversed the inhibitory effects of circ_0068481 silencing on hypoxia-induced hPASMC proliferation, invasion, and migration. KLF5 was a direct miR-361-3p target, and miR-361-3p upregulation mitigated hypoxia-induced hPASMC proliferation, invasion, and migration by inhibiting KLF5 expression. Moreover, circ_0068481-induced KLF5 expression by binding to miR-361-3p in hypoxic hPASMCs. CONCLUSIONS Circ_0068481 knockdown ameliorated hypoxia-induced hPASMC proliferation, invasion, and migration at least in part through the miR-361-3p/KLF5 axis.
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Affiliation(s)
- Hai-Rong Li
- Department of Cardiology, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Guan-Liang Chen
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xiao-Li Fang
- Department of Cardiology, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, China
| | - Xing-Jiu Cai
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Rong-Li Xu
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Dong-Dong Li
- Laboratory department, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, China
| | - Zhi-Wei Zhang
- Department of Cardiology, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, China
- Department of Pediatric Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangzhou, China
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Zhu Y, Ren J, Wu X, Zhang Y, Wang Y, Xu J, Tan Q, Jiang Y, Li Y. lncRNA ENST00000422059 promotes cell proliferation and inhibits cell apoptosis in breast cancer by regulating the miR-145-5p/KLF5 axis. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1892-1901. [PMID: 37997376 PMCID: PMC10753370 DOI: 10.3724/abbs.2023226] [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: 02/26/2023] [Accepted: 06/01/2023] [Indexed: 11/25/2023] Open
Abstract
Krüppel-like zinc-finger transcription factor 5 (KLF5) is a vital regulator of breast cancer (BC) onset and progression. The mechanism by which KLF5 regulates BC is still not clearly known. In this study, bioinformatics analysis shows that BC-affected individuals with elevated KLF5 expression levels have poor clinical outcomes. We further verify that miR-145-5p regulated KLF5 expression to promote cell apoptosis and inhibit cell proliferation in BC via dual-luciferase reporter assay, western blot analysis, qRT-PCR, CCK-8 assay and cell apoptosis assay. In addition, based on bioinformatics analysis, the binding of ENST00000422059 with miR-145-5p is confirmed by dual-luciferase reporter assay. Subsequently, FISH, western blot analysis, qRT-PCR, CCK-8 and cell apoptosis assays verified that ENST00000422059 increases KLF5 protein expression by sponging miRNA to promote cell proliferation and inhibit cell apoptosis. Finally, ENST00000422059 is found to accelerate tumor progression by regulating the miR-145-5p/KLF5 axis in vivo. In conclusion, this study suggests that ENST00000422059 upregulates KLF5 by sponging miR-145-5p to promote BC progression.
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Affiliation(s)
- Yiping Zhu
- Department of Oncologythe First Affiliated Hospital of Wannan Medical CollegeWuhu241002China
| | - Junling Ren
- Department of Thyroid and Breastthe Second Affiliated Hospital of Wannan Medical CollegeWuhu241002China
| | - Xu Wu
- Department of Oncologythe First Affiliated Hospital of Wannan Medical CollegeWuhu241002China
| | - Yuan Zhang
- Provincial Key Laboratory of Biological Macro-molecules ResearchWannan Medical CollegeWuhu241002China
| | - Ying Wang
- Provincial Key Laboratory of Biological Macro-molecules ResearchWannan Medical CollegeWuhu241002China
| | - Jinwen Xu
- Department of Oncologythe First Affiliated Hospital of Wannan Medical CollegeWuhu241002China
- Department of Pathogen Biology and ImmunologyJiaxing University College of MedicineJiaxing314000China
- Provincial Key Laboratory of Biological Macro-molecules ResearchWannan Medical CollegeWuhu241002China
- Department of Thyroid and Breastthe Second Affiliated Hospital of Wannan Medical CollegeWuhu241002China
| | - Qiuyu Tan
- Provincial Key Laboratory of Biological Macro-molecules ResearchWannan Medical CollegeWuhu241002China
| | - Yuxin Jiang
- Department of Pathogen Biology and ImmunologyJiaxing University College of MedicineJiaxing314000China
| | - Yulei Li
- Provincial Key Laboratory of Biological Macro-molecules ResearchWannan Medical CollegeWuhu241002China
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Abstract
The Hedgehog (Hh) family of secreted proteins governs embryonic development and adult tissue homeostasis through the Gli family of transcription factors. Gli is thought to be activated at the tip of primary cilium, but the underlying mechanism has remained poorly understood. Here, we show that Unc-51-like kinase 4 (Ulk4), a pseudokinase and a member of the Ulk kinase family, acts in conjunction with another Ulk family member Stk36 to promote Gli2 phosphorylation and Hh pathway activation. Ulk4 interacts with Stk36 through its N-terminal region containing the pseudokinase domain and with Gli2 via its regulatory domain to bridge the kinase and substrate. Although dispensable for Hh-induced Stk36 kinase activation, Ulk4 is essential for Stk36 ciliary tip localization, Gli2 phosphorylation, and activation. In response to Hh, both Ulk4 and Stk36 colocalize with Gli2 at ciliary tip, and Ulk4 and Stk36 depend on each other for their ciliary tip accumulation. We further show that ciliary localization of Ulk4 depends on Stk36 kinase activity and phosphorylation of Ulk4 on Thr1023, and that ciliary tip accumulation of Ulk4 is essential for its function in the Hh pathway. Taken together, our results suggest that Ulk4 regulates Hh signaling by promoting Stk36-mediated Gli2 phosphorylation and activation at ciliary tip.
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Affiliation(s)
- Mengmeng Zhou
- Department of Molecular Biology, University of Texas Southwestern Medical CenterDallasUnited States
| | - Yuhong Han
- Department of Molecular Biology, University of Texas Southwestern Medical CenterDallasUnited States
| | - Jin Jiang
- Department of Molecular Biology, University of Texas Southwestern Medical CenterDallasUnited States
- Department of Pharmacology, University of Texas Southwestern Medical CenterDallasUnited States
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Wang F, Luo M, Cheng Y. KLF5 promotes esophageal squamous cell cancer through the transcriptional activation of FGFBP1. Med Oncol 2023; 41:17. [PMID: 38087142 PMCID: PMC10716083 DOI: 10.1007/s12032-023-02244-x] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/19/2023] [Indexed: 12/18/2023]
Abstract
Krüpple-like factor 5 (KLF5) is a zinc-finger-containing transcription factor implicated in several human malignancies, but its potential regulatory mechanisms implicated in esophageal squamous cell carcinoma (ESCC) remain elusive. Here, we show that KLF5 is upregulated in ESCC, where its level was significantly associated with tumor differentiation and lymph node metastasis status. Upregulated KLF5 expression promoted the proliferation, migration, and invasion of ESCC cells. Reduced KLF5 showed the opposite effects. Mechanistically, KLF5 exerts its tumor promotion effect by up-regulating fibroblast growth factor binding protein 1 (FGF-BP1) and snail family transcriptional repressor 2 (SNAIL2). KLF5 binds to the promoter regions of FGF-BP1 and transcriptionally activates its expression. Our study indicated that KLF5 could promote esophageal squamous cell cancer proliferation, migration, and invasion by upregulating FGF-BP1/SNAIL2 signaling. Our work suggests that KLF5 might be a proto-oncogene in ESCC and implicated in ESCC metastasis.
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Affiliation(s)
- Fengyun Wang
- Department of Oncology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science & Technology, Baotou, Inner Mongolia, China
| | - Ming Luo
- Imaging Department, Third Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia, China
| | - Yufeng Cheng
- Department of Radiotherapy, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No.107, West Wenhua Road, Lixia District, Jinan, Shandong, China.
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Du Y, Ye H, Lin M, Cao L. KLF14 activates the JNK-signaling pathway to induce S-phase arrest in cervical cancer cells. Front Immunol 2023; 14:1267950. [PMID: 38143751 PMCID: PMC10748496 DOI: 10.3389/fimmu.2023.1267950] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/23/2023] [Indexed: 12/26/2023] Open
Abstract
Objective To explore the role of Krüppel-like factor 14 (KLF14) and its underlying mechanism(s) of action in cell-cycle regulation in cervical cancer. Methods Lentiviral infection was used to construct KLF14, KLF14 zinc-finger structural mutations, and empty vector controls in SiHa and HeLa cervical cancer cells. The effect of KLF14 on cervical cancer cell cycle was detected by flow cytometry. The effect of KLF14 on the expression of cyclin-dependent kinase 2 (CDK2), cyclin A2 (CCNA2), and MAPK signalling pathway-related molecules was detected by fluorescence quantitative RT-PCR (qRT-PCR) and western blot. Cervical cancer cells were treated with JNK-pathway inhibitors/agonists before we assessed changes in the cell cycle and the expression of the CDK2, CCNA2, and p-JNK/JNK. Subcutaneous xenograft studies to explore the effects of KLF14 on cervical cancer cell proliferation in vivo, and western blotting was implemented to measure the expression of CCNA2, CDK2, and the activation levels of the MAPK-signaling pathway proteins in tumours. Results The proportion of cells in the S phase was increased in the KLF14-overexpressing group compared with the control group (P<0.001); CDK2, CCNA2, and p-JNK/JNK expression levels were elevated in the KLF14-overexpressing group relative to the control group (all P<0.05). When JNK-pathway activation was inhibited/promoted, the proportion of cells in the S phase was reduced/increased (P<0.05) and CDK2 and CCNA2 expression levels were reduced/decreased, respectively (all P<0.05). Vivo experiments revealed that KLF14 inhibited cervical cancer cell proliferation (P<0.01) and that p-JNK/JNK, CDK2, and CCNA2 expression levels were augmented in tumours in the overexpression group (P<0.01). Conclusion KLF14 induced S-phase arrest in cervical cancer cells and inhibited the proliferation of cervical cancer cells in vivo; the induction of S-phase arrest was related to its zinc-finger structure. KLF14 also activated the JNK pathway to induce S-phase arrest and promote the expression of CDK2 and CCNA2. In summary, KLF14 activates the JNK-signaling pathway to induce S-phase arrest in cervical cancer cells.
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Affiliation(s)
- Ying Du
- Oncology Department, Shandong Provincial Qianfoshan Hospital, School of Medicine, Shandong University, Jinan, China
| | - Hui Ye
- Oncology Department, Shandong Provincial Qianfoshan Hospital, School of Medicine, Shandong University, Jinan, China
| | - Mei Lin
- Department of Pathology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Lili Cao
- Oncology Department, Shandong Provincial Qianfoshan Hospital, School of Medicine, Shandong University, Jinan, China
- Oncology Department, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, , Jinan, China
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