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Jiang LY, Wang GH, Xu JJ, Li XL, Lin XY, Fang X, Zhang HX, Feng M, Jiang CM. CREB-induced LINC00473 promotes chemoresistance to TMZ in glioblastoma by regulating O6-methylguanine-DNA-methyltransferase expression via CEBPα binding. Neuropharmacology 2024; 243:109790. [PMID: 37981063 DOI: 10.1016/j.neuropharm.2023.109790] [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: 04/20/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 11/21/2023]
Abstract
Temozolomide (TMZ) offers substantial therapeutic benefits for glioblastoma (GB), yet its efficacy is hindered the development of chemoresistance. The role of long non-coding RNAs (lncRNAs) in tumorigenesis and chemoresistance has garnered great attention in studies on TMZ resistance. This study aimed to reveal the role of LINC00473 in TMZ chemoresistance and the underlying mechanism in GB. The expression of LINC00473 in TMZ-resistant and TMZ-sensitive GB cells was investigated using qPCR analysis. The role of LINC00473 in regulating TMZ resistance in GB cells was analyzed using the CCK-8 assay, colony formation assay, and flow cytometry. The next steps included assessing if LINC00473 is regulated by CREB and whether LINC00473 promotes chemoresistance through MGMT regulation via CEBPα. Further, chemoresistance delivery between cells via exosomal LINC00473 was validated in vitro and in vivo. Results showed that LINC00473 levels were elevated in TMZ-resistant cells upon CREB activation, and the lncRNA promoted the chemoresistance of GB cells through the upregulation of MGMT expression. Mechanistically, LINC00473 regulated the MGMT expression by binding to CEBPα. The highly-expressed LINC00473 packaged in exosomes transferred chemoresistance to the adjacent TMZ-sensitive GB cells. In conclusion, a novel CREB/LINC00473/CEBPα/MGMT pathway was revealed in the GB TMZ-resistance formation. In addition, an exosome-based mechanism of chemoresistance transmission was revealed, suggesting that LINC00473 could be used as a novel therapeutic target for GB.
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Affiliation(s)
- Li-Ya Jiang
- Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang Province, China; Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China
| | - Guan-Hao Wang
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China; The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang Province, China
| | - Jing-Jiao Xu
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China; The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang Province, China
| | - Xiao-Li Li
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China
| | - Xiao-Yan Lin
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China
| | - Xiang Fang
- Department of Clinical Laboratory Center, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China
| | - Hong-Xu Zhang
- Department of Ophthalmology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China
| | - Mei Feng
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China.
| | - Chun-Ming Jiang
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China.
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Zeng X, Shen J, Li D, Liu S, Feng Y, Yuan D, Wang L, Wu Z. CEBPα/miR-101b-3p promotes meningoencephalitis in mice infected with Angiostrongylus cantonensis by promoting microglial pyroptosis. Cell Commun Signal 2023; 21:31. [PMID: 36747241 PMCID: PMC9903543 DOI: 10.1186/s12964-023-01038-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] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/02/2023] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Angiostrongylus cantonensis (A. cantonensis) infection can induce acute inflammation, which causes meningoencephalitis and tissue mechanical injury to the brain. Parasite infection-induced microRNAs play important roles in anti-parasite immunity in non-permissive hosts. miR-101b-3p is highly expressed after A. cantonensis infection; however, the role of miR-101b-3p and the transcription regulation of miR-101b-3p in A. cantonensis infection remain poorly characterized. RESULTS In the present study, we found that miR-101b-3p inhibition alleviated inflammation infiltration and pyroptosis in A. cantonensis infection. In addition, we found that CCAAT/enhancer-binding protein alpha (CEBPα) directly bound to the - 6-k to - 3.5-k region upstream of miR-101b, and CEBPα activated miR-101b-3p expression in microglia. These data suggest the existence of a novel CEBPα/miR-101b-3p/pyroptosis pathway in A. cantonensis infection. Further investigation verified that CEBPα promotes pyroptosis by activating miR-101b-3p expression in microglia, and microglial pyroptosis further promoted inflammation. CONCLUSIONS Our results suggest that a CEBPα/miR-101b-3p/pyroptosis pathway may contribute to A. cantonensis infection-induced inflammation and highlight the pro-inflammatory effect of miR-101b-3p. Video Abstract.
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Affiliation(s)
- Xingda Zeng
- grid.12981.330000 0001 2360 039XDepartment of Parasitology of Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080 China ,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080 China
| | - Jia Shen
- grid.12981.330000 0001 2360 039XDepartment of Parasitology of Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080 China ,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080 China
| | - Dinghao Li
- grid.12981.330000 0001 2360 039XDepartment of Parasitology of Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080 China ,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080 China
| | - Shurui Liu
- grid.12981.330000 0001 2360 039XDepartment of Parasitology of Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080 China ,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080 China
| | - Ying Feng
- grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510006 China
| | - Dongjuan Yuan
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| | - Lifu Wang
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, 510180, China.
| | - Zhongdao Wu
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China. .,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, 510080, China. .,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080, China.
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3
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Lee ES, Guo T, Srivastava RK, Shabbir A, Ibáñez CF. Activin receptor ALK4 promotes adipose tissue hyperplasia by suppressing differentiation of adipocyte precursors. J Biol Chem 2022; 299:102716. [PMID: 36403856 PMCID: PMC9758429 DOI: 10.1016/j.jbc.2022.102716] [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: 10/03/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 11/19/2022] Open
Abstract
Adipocyte hyperplasia and hypertrophy are the two main processes contributing to adipose tissue expansion, yet the mechanisms that regulate and balance their involvement in obesity are incompletely understood. Activin B/GDF-3 receptor ALK7 is expressed in mature adipocytes and promotes adipocyte hypertrophy upon nutrient overload by suppressing adrenergic signaling and lipolysis. In contrast, the role of ALK4, the canonical pan-activin receptor, in adipose tissue is unknown. Here, we report that, unlike ALK7, ALK4 is preferentially expressed in adipocyte precursors, where it suppresses differentiation, allowing proliferation and adipose tissue expansion. ALK4 expression in adipose tissue increases upon nutrient overload and positively correlates with fat depot mass and body weight, suggesting a role in adipose tissue hyperplasia during obesity. Mechanistically, ALK4 signaling suppresses expression of CEBPα and PPARγ, two master regulators of adipocyte differentiation. Conversely, ALK4 deletion enhances CEBPα/PPARγ expression and induces premature adipocyte differentiation, which can be rescued by CEBPα knockdown. These results clarify the function of ALK4 in adipose tissue and highlight the contrasting roles of the two activin receptors in the regulation of adipocyte hyperplasia and hypertrophy during obesity.
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Affiliation(s)
- Ee-Soo Lee
- Department of Physiology and Life Sciences Institute, National University of, Singapore, Singapore
| | - Tingqing Guo
- Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Raj Kamal Srivastava
- Department of Physiology and Life Sciences Institute, National University of, Singapore, Singapore
| | - Assim Shabbir
- Division of General Surgery, University Surgical Cluster, National University, Health System, Singapore
| | - Carlos F Ibáñez
- Department of Physiology and Life Sciences Institute, National University of, Singapore, Singapore; Department of Neuroscience, Karolinska Institute, Stockholm, Sweden; Peking-Tsinghua Center for Life Sciences, PKU-IDG/McGovern Institute for Brain Research, Peking University School of Life Sciences, Beijing, China; Chinese Institute for Brain Research, Life Science Park, Beijing, China; Stellenbosch Institute for Advanced Study, Wallenberg Research Centre at Stellenbosch University, Stellenbosch, South Africa.
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4
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Lin T, Zhang Y, Zhang T, Steckler RA, Yang X. Hop2 interacts with the transcription factor CEBPα and suppresses adipocyte differentiation. J Biol Chem 2021; 297:101264. [PMID: 34600885 PMCID: PMC8528721 DOI: 10.1016/j.jbc.2021.101264] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/09/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022] Open
Abstract
CCAAT enhancer binding protein (CEBP) transcription factors (TFs) are known to promote adipocyte differentiation; however, suppressors of CEBP TFs have not been reported thus far. Here, we find that homologous chromosome pairing protein 2 (Hop2) functions as an inhibitor for the TF CEBPα. We found that Hop2 mRNA is highly and specifically expressed in adipose tissue, and that ectopic Hop2 expression suppresses reporter activity induced by CEBP as revealed by DNA transfection. Recombinant and ectopically expressed Hop2 was shown to interact with CEBPα in pull-down and coimmunoprecipitation assays, and interaction between endogenous Hop2 and CEBPα was observed in the nuclei of 3T3 preadipocytes and adipocytes by immunofluorescence and coimmunoprecipitation of nuclear extracts. In addition, Hop2 stable overexpression in 3T3 preadipocytes inhibited adipocyte differentiation and adipocyte marker gene expression. These in vitro data suggest that Hop2 inhibits adipogenesis by suppressing CEBP-mediated transactivation. Consistent with a negative role for Hop2 in adipogenesis, ablation of Hop2 (Hop2-/-) in mice led to increased body weight, adipose volume, adipocyte size, and adipogenic marker gene expression. Adipogenic differentiation of isolated adipose-derived mesenchymal stem cells showed a greater number of lipid droplet-containing colonies formed in Hop2-/- adipose-derived mesenchymal stem cell cultures than in wt controls, which is associated with the increased expression of adipogenic marker genes. Finally, chromatin immunoprecipitation revealed a higher binding activity of endogenous CEBPα to peroxisome proliferator-activated receptor γ, a master adipogenic TF, and a known CEBPα target gene. Therefore, our study identifies for the first time that Hop2 is an intrinsic suppressor of CEBPα and thus adipogenesis in adipocytes.
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Affiliation(s)
- Tonghui Lin
- Department of Pediatrics, Pediatric Research Center, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Yang Zhang
- Department of Pediatrics, Pediatric Research Center, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Tingting Zhang
- Department of Pediatrics, Pediatric Research Center, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Rita A Steckler
- Department of Pediatrics, Pediatric Research Center, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Xiangli Yang
- Department of Pediatrics, Pediatric Research Center, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA.
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5
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Sabatier M, Boet E, Zaghdoudi S, Guiraud N, Hucteau A, Polley N, Cognet G, Saland E, Lauture L, Farge T, Sahal A, Pancaldi V, Chu-Van E, Castelli F, Bertoli S, Bories P, Récher C, Boutzen H, Mansat-De Mas V, Stuani L, Sarry JE. Activation of Vitamin D Receptor Pathway Enhances Differentiating Capacity in Acute Myeloid Leukemia with Isocitrate Dehydrogenase Mutations. Cancers (Basel) 2021; 13:cancers13205243. [PMID: 34680392 PMCID: PMC8533831 DOI: 10.3390/cancers13205243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Around 15% of acute myeloid leukemia (AML) patients harbor mutations in isocitrate dehydrogenases (IDH), which lead to the production of the oncometabolite 2-hydroxyglutarate (2-HG). Inhibitors of mutant IDH enzymes and their 2-HG production have been approved by the FDA to be used in patients. However, 60% of IDH mutant AML patients do not respond to these inhibitors or develop mechanisms of resistance, leading to relapse. Among these mechanisms, some produce a 2-HG rebound. Alternative therapies exploiting the 2-HG-dependent molecular effects could therefore be of clinical interest. In this study, we demonstrate that 2-HG specifically activates vitamin D receptor (VDR) in IDH mutant AML cells leading to increased sensitivity to the combination of vitamin D (or VDR agonist) and all-trans retinoic acid and revealing a new therapeutic approach that can be readily applied to AML patients in this subgroup. Abstract Relapses and resistance to therapeutic agents are major barriers in the treatment of acute myeloid leukemia (AML) patients. These unfavorable outcomes emphasize the need for new strategies targeting drug-resistant cells. As IDH mutations are present in the preleukemic stem cells and systematically conserved at relapse, targeting IDH mutant cells could be essential to achieve a long-term remission in the IDH mutant AML subgroup. Here, using a panel of human AML cell lines and primary AML patient specimens harboring IDH mutations, we showed that the production of an oncometabolite (R)-2-HG by IDH mutant enzymes induces vitamin D receptor-related transcriptional changes, priming these AML cells to differentiate with pharmacological doses of ATRA and/or VD. This activation occurs in a CEBPα-dependent manner. Accordingly, our findings illuminate potent and cooperative effects of IDH mutations and the vitamin D receptor pathway on differentiation in AML, revealing a novel therapeutic approach easily transferable/immediately applicable to this subgroup of AML patients.
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Affiliation(s)
- Marie Sabatier
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Emeline Boet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Sonia Zaghdoudi
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Nathan Guiraud
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Alexis Hucteau
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Nathaniel Polley
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Guillaume Cognet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Estelle Saland
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Laura Lauture
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Thomas Farge
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Ambrine Sahal
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Vera Pancaldi
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
| | - Emeline Chu-Van
- CEA/DSV/iBiTec-S/SPI, Laboratoire d’Etude du Métabolisme des Médicaments, MetaboHUB-Paris, 91191 Gif-sur-Yvette, France; (E.C.-V.); (F.C.)
| | - Florence Castelli
- CEA/DSV/iBiTec-S/SPI, Laboratoire d’Etude du Métabolisme des Médicaments, MetaboHUB-Paris, 91191 Gif-sur-Yvette, France; (E.C.-V.); (F.C.)
| | - Sarah Bertoli
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
- Département d’Hématologie, University of Toulouse, CEDEX 6, 31013 Toulouse, France
- Service d’Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, CEDEX 9, 31059 Toulouse, France
| | - Pierre Bories
- Réseau Régional de Cancérologie Onco-Occitanie, CEDEX 9, 31059 Toulouse, France;
| | - Christian Récher
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
- Département d’Hématologie, University of Toulouse, CEDEX 6, 31013 Toulouse, France
- Service d’Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, CEDEX 9, 31059 Toulouse, France
| | - Héléna Boutzen
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
| | - Véronique Mansat-De Mas
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
- Département d’Hématologie, University of Toulouse, CEDEX 6, 31013 Toulouse, France
| | - Lucille Stuani
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
- Correspondence: (L.S.); (J.-E.S.); Tel.: +33-582-741-632 (J.-E.S.)
| | - Jean-Emmanuel Sarry
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, Centre National de Recherche Scientifique, CEDEX 1, 31037 Toulouse, France; (M.S.); (E.B.); (S.Z.); (N.G.); (A.H.); (N.P.); (G.C.); (E.S.); (L.L.); (T.F.); (A.S.); (V.P.); (S.B.); (C.R.); (H.B.); (V.M.-D.M.)
- LabEx Toucan, 31037 Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, 31037 Toulouse, France
- Correspondence: (L.S.); (J.-E.S.); Tel.: +33-582-741-632 (J.-E.S.)
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Ji ZS, Jiang H, Xie Y, Wei QP, Yin XF, Ye JH, Quan XZ, Lan YL, Zhao M, Tian XL, Zhang YJ, Yang XZ. Chemerin promotes the pathogenesis of preeclampsia by activating CMKLR1/p-Akt/CEBPɑ axis and inducing M1 macrophage polarization. Cell Biol Toxicol 2021; 38:611-628. [PMID: 34398343 DOI: 10.1007/s10565-021-09636-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/13/2021] [Indexed: 11/30/2022]
Abstract
A higher ratio of M1/M2 macrophages and an elevated chemerin level are both related to increased risk of preeclampsia. However, the crosstalk between these two events and their collective contribution to preeclampsia are not well understood. In this study, we assessed the impacts of chemerin chemokine-like receptor 1 (CMKLR1)/p-Akt/CEBPα axis in regulating macrophage polarization and mediating the pathogenic effects of chemerin on preeclampsia. We showed that chemerin, in a dose- and time-dependent manner, stimulated M1 macrophage polarization, inhibited macrophage-induced trophoblast invasion and migration, and suppressed macrophage-mediated angiogenesis. All these chemerin-induced phenotypes are essentially mediated by sequentially CMKLR1, Akt activation, and CEBPα. Mechanistically, CEBPα acted as a transcriptional activator for both IRF8 and chemerin. In vivo, chemerin aggravated preeclampsia, while α-NETA, an inhibitor for CMKLR1, significantly suppressed M1 macrophage polarization and alleviated preeclampsia. In summary, chemerin, by activating CMKLR1/Akt/CEBPα axis, forms a positive feedback loop, promotes M1 macrophage polarization, suppresses trophoblast migration/invasion and angiogenesis, and contributes to preeclampsia. Therefore, targeting chemerin signaling may benefit the prevention and/or treatment of preeclampsia.
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Affiliation(s)
- Zhi-Song Ji
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Hua Jiang
- Department of Clinical Laboratory, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Yue Xie
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Qi-Peng Wei
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Xiao-Fang Yin
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Jin-Hai Ye
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Xiao-Zhen Quan
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Yan-Li Lan
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Meng Zhao
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Xiao-Long Tian
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Ya-Jun Zhang
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China
| | - Xue-Zhou Yang
- Department of Reproductive Medicine Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No.136, Jingzhou Road, Xiangcheng District, Xiangyang, 441021, Hubei Province, People's Republic of China.
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7
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Liu X, Chen X, Xiao M, Zhu Y, Gong R, Liu J, Zeng Q, Xu C, Chen X, Wang F, Cao K. RANBP2 Activates O-GlcNAcylation through Inducing CEBPα-Dependent OGA Downregulation to Promote Hepatocellular Carcinoma Malignant Phenotypes. Cancers (Basel) 2021; 13:3475. [PMID: 34298689 PMCID: PMC8304650 DOI: 10.3390/cancers13143475] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 11/16/2022] Open
Abstract
O-GlcNAcylation is an important post-translational modification (PTM) jointly controlled by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA). Aberrant hyper-O-GlcNAcylation is reported to yield hepatocellular carcinoma (HCC) malignancy, but the underlying mechanisms of the OGT/OGA imbalance responsible for HCC tumorigenesis remain largely unknown. Here, we report that RAN-binding protein 2 (RANBP2), one of the small ubiquitin-like modifier (SUMO) E3 ligases, contributed to malignant phenotypes in HCC. RANBP2 was found to facilitate CCAAT/enhancer-binding protein alpha (CEBPα) SUMOylation and degradation by direct interplay with CEBPα. As a transcriptional factor, CEBPα was verified to augment OGA transcription, and further experiments demonstrated that RANBP2 enhanced the O-GlcNAc level by downregulating OGA transcription while not affecting OGT expression. Importantly, we provided in vitro and in vivo evidence of HCC malignant phenotypes that RANBP2 triggered through an imbalance of OGT/OGA and subsequent higher O-GlcNAcylation events for oncogenic proteins such as peroxisome proliferative-activated receptor gamma coactivator 1 alpha (PGC1α) in a CEBPα-dependent manner. Altogether, our results show a novel molecular mechanism whereby RANBP2 regulates its function through CEBPα-dependent OGA downregulation to induce a global change in the hyper-O-GlcNAcylation of genes, such as PGC1α, encouraging the further study of promising implications for HCC therapy.
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Affiliation(s)
- Xiaoming Liu
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (X.L.); (X.C.); (M.X.); (Y.Z.)
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (R.G.); (C.X.); (X.C.); (F.W.)
| | - Xingyu Chen
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (X.L.); (X.C.); (M.X.); (Y.Z.)
| | - Mengqing Xiao
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (X.L.); (X.C.); (M.X.); (Y.Z.)
| | - Yuxing Zhu
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (X.L.); (X.C.); (M.X.); (Y.Z.)
| | - Renjie Gong
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (R.G.); (C.X.); (X.C.); (F.W.)
| | - Jianye Liu
- Department of Urology, Third Xiangya Hospital of Central South University, Changsha 410013, China;
| | - Qinghai Zeng
- Department of Dermatology, Third Xiangya Hospital of Central South University, Changsha 410013, China;
| | - Canxia Xu
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (R.G.); (C.X.); (X.C.); (F.W.)
| | - Xiong Chen
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (R.G.); (C.X.); (X.C.); (F.W.)
| | - Fen Wang
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (R.G.); (C.X.); (X.C.); (F.W.)
| | - Ke Cao
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha 410013, China; (X.L.); (X.C.); (M.X.); (Y.Z.)
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8
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Grassilli S, Vezzali F, Cairo S, Brugnoli F, Volinia S, De Mattei M, Judde JG, Bertagnolo V. Targeting the Vav1/miR‑29b axis as a potential approach for treating selected molecular subtypes of triple‑negative breast cancer. Oncol Rep 2021; 45:83. [PMID: 33846812 DOI: 10.3892/or.2021.8034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/10/2021] [Indexed: 11/05/2022] Open
Abstract
MicroRNA (miR)‑29b has been reported to play a controversial role in breast cancer, particularly triple‑negative breast cancer (TNBC). Based on our previous data revealing that the PU.1‑mediated expression of miR‑29b in cells from acute myeloid leukemia is sustained by Vav1, the potential role of this multidomain protein in modulating miR‑29b levels in breast tumor cells, in which Vav1 is ecstopically expressed and shows a nuclear accumulation, was investigated. Breast cancer cell lines with various phenotypes and patient‑derived xenograft‑derived TNBC cells were subjected to Vav1 modulation and reverse transcription quantitative PCR of miR‑29b levels. The recruitment of CCAAT enhancer binding protein α (CEBPα) to miR‑29b promoters was investigated by quantitative chromatin immunoprecipitation assays. It was found that Vav1 was essential for the recovery of mature miR‑29b in breast cancer cell lines, and that it promoted the expression of the miRNA in TNBC cells of the mesenchymal molecular subtype by sustaining the transcription of the miR‑29b1/a cluster mediated by CEBPα. The present results suggest that Vav1 is a crucial modulator of miR‑29b expression in breast tumor cells, and this finding may help identify strategies that may be useful in the management of TNBC by targeting the Vav1/miR‑29b axis, as there is a lack of molecular‑based treatments for TNBC.
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Affiliation(s)
- Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Federica Vezzali
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | | | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Stefano Volinia
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Monica De Mattei
- Department of Medical Sciences, University of Ferrara, I-44121 Ferrara, Italy
| | | | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
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9
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Zhang F, Xiong Q, Tao H, Liu Y, Zhang N, Li XF, Suo XJ, Yang QP, Chen MX. ACOX1, regulated by C/EBPα and miR-25-3p, promotes bovine preadipocyte adipogenesis. J Mol Endocrinol 2021; 66:195-205. [PMID: 33502338 PMCID: PMC8052523 DOI: 10.1530/jme-20-0250] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/22/2021] [Indexed: 12/14/2022]
Abstract
Acyl-coenzyme A oxidase 1 (ACOX1) is the first and rate-limiting enzyme in peroxisomal fatty acid β-oxidation of fatty acids. Previous studies have reported that ACOX1 was correlated with the meat quality of livestock, while the role of ACOX1 in intramuscular adipogenesis of beef cattle and its transcriptional and post-transcriptional regulatory mechanisms remain unclear. In the present study, gain-of-function and loss-of-function assays demonstrated that ACOX1 positively regulated the adipogenesis of bovine intramuscular preadipocytes. The C/EBPα-binding sites in the bovine ACOX1 promoter region at -1142 to -1129 bp, -831 to -826 bp, and -303 to -298 bp were identified by promoter deletion analysis and site-directed mutagenesis. Electrophoretic mobility shift assays (EMSA) and chromatin immunoprecipitation (ChIP) further showed that these three regions are C/EBPα-binding sites, both in vitro and in vivo, indicating that C/EBPα directly interacts with the bovine ACOX1 promoter and inhibits its transcription. Furthermore, the results from bioinformatics analysis, dual luciferase assay, site-directed mutagenesis, qRT-PCR, and Western blotting demonstrated that miR-25-3p directly targeted the ACOX1 3'UTR (3'UTR). Taken together, our findings suggest that ACOX1, regulated by transcription factor C/EBPα and miR-25-3p, promotes adipogenesis of bovine intramuscular preadipocytes via regulating peroxisomal fatty acid β-oxidation.
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Affiliation(s)
- Feng Zhang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Qi Xiong
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Hu Tao
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Yang Liu
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Nian Zhang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xiao-Feng Li
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xiao-Jun Suo
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Qian-Ping Yang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Ming-Xin Chen
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
- Correspondence should be addressed to M-X Chen:
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10
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Daw S, Law S. The functional interplay of transcription factors and cell adhesion molecules in experimental myelodysplasia including hematopoietic stem progenitor compartment. Mol Cell Biochem 2020; 476:535-551. [PMID: 33011884 DOI: 10.1007/s11010-020-03920-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/19/2020] [Indexed: 12/30/2022]
Abstract
Myelodysplastic syndrome is a heterogenous group of disorder with clonal dysregulated hematopoiesis characterized by bone marrow failure, cytogenetic and molecular abnormalities and variable risk of progression to acute myeloid leukemia (AML). The bone marrow niche plays a major role in maintaining the homeostasis and is often injured by the chemotherapeutic drugs leading to catastrophic consequences like myelodysplastic syndrome. In the present study, we made an attempt to find out the osteoblastic niche related alterations in the myelodysplastic bone marrow through mainly flowcytometric and fluorescent microscopic studies. We have also checked the condition of the myelodysplastic bone through micro computed tomography. The results revealed that the affected osteoblasts of the myelodysplastic bone marrow compelled the hematopoietic stem cell to come out of quiescence and become actively proliferating, and in this scenario the decline in expression of cell adhesion molecules like N-Cadherin, Intercellular adhesion molecule 1 (ICAM) and upregulated focal adhesion kinase (FAK) played a major role. The hike in number of osteoclasts in myelodysplastic cases than control also shattered the balance between bone formation and resorption ratio. We have recorded a dysregulated expression of transcription factors GATA2 and CEBPα (CCAAT-enhancer-binding-protein) in the hematopoietic stem progenitor compartment of the myelodysplastic bone marrow, the main reason behind the presence of abnormal myeloblasts in myelodysplastic cases. Collectively, we can say the coordinated perturbations in the osteoblastic niche, cell adhesion molecules together with the transcription factors has resulted in the uncontrolled proliferation of hematopoietic stem cell, dysregulated myelopoiesis, early trafficking of hematopoietic progenitors to blood compartment and at the same time pancytopenic peripheral blood conditions during the progression of N-Ethyl N Nitroso Urea (ENU) induced myelodysplasia.
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Affiliation(s)
- Suchismita Daw
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical, Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata, 700073, West Bengal, India
| | - Sujata Law
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical, Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata, 700073, West Bengal, India.
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11
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Zhang D, Liu J, Xie T, Jiang Q, Ding L, Zhu J, Ye Q. Oleate acid-stimulated HMMR expression by CEBPα is associated with nonalcoholic steatohepatitis and hepatocellular carcinoma. Int J Biol Sci 2020; 16:2812-2827. [PMID: 33061798 PMCID: PMC7545721 DOI: 10.7150/ijbs.49785] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 08/11/2020] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic steatohepatitis (NASH) is a type of nonalcoholic fatty liver disease and has become a major risk factor for hepatocellular carcinoma (HCC). However, the underlying pathophysiological mechanisms are still elusive. Here, we identify hyaluronan-mediated motility receptor (HMMR) as a critical gene associated with NASH/HCC by combination of bioinformatic analysis and functional experiments. Analysis of differentially expressed genes (DEGs) between normal controls and NASH/HCC identified 5 hub genes (HMMR, UBE2T, TYMS, PTTG1 and GINS2). Based on the common DEGs, analyses of univariate and multivariate Cox regression and the area under the curve (AUC) value of the receiver operating characteristic (ROC) indicate that HMMR is the most significant gene associated with NASH/HCC among five hub genes. Oleate acid (OA), one of fatty acids that induce cellular adipogenesis, stimulates HMMR expression via CCAAT/enhancer-binding protein α (CEBPα). CEBPα increases the expression of HMMR through binding to its promoter. HMMR promotes HCC cell proliferation in vitro via activation of G1/S and G2/M checkpoint transitions, concomitant with a marked increase of the positive cell cycle regulators, including cyclin D1, cyclin E, and cyclin B1. Knockdown of HMMR suppresses HCC tumor growth in nude mice. Our study identifies an important role of HMMR in NASH/HCC, and suggests that HMMR may be a useful target for therapy and prognostic prediction of NASH/HCC patients.
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Affiliation(s)
- Deyu Zhang
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China
| | - Jiahong Liu
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China.,Department of Oncology, The Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - Tian Xie
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China
| | - Qiwei Jiang
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China
| | - Lihua Ding
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China
| | - Jianhua Zhu
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China.,Department of Oncology, The Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - Qinong Ye
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing 100850, China
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12
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Setten RL, Lightfoot HL, Habib NA, Rossi JJ. Development of MTL-CEBPA: Small Activating RNA Drug for Hepatocellular Carcinoma. Curr Pharm Biotechnol 2018; 19:611-621. [PMID: 29886828 PMCID: PMC6204661 DOI: 10.2174/1389201019666180611093428] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 01/12/2023]
Abstract
BACKGROUND Oligonucleotide drug development has revolutionised the drug discovery field. Within this field, 'small' or 'short' activating RNAs (saRNA) are a more recently discovered category of short double-stranded RNA with clinical potential. saRNAs promote transcription from target loci, a phenomenon widely observed in mammals known as RNA activation (RNAa). OBJECTIVE The ability to target a particular gene is dependent on the sequence of the saRNA. Hence, the potential clinical application of saRNAs is to increase target gene expression in a sequence-specific manner. saRNA-based therapeutics present opportunities for expanding the "druggable genome" with particular areas of interest including transcription factor activation and cases of haploinsufficiency. RESULTS AND CONCLUSION In this mini-review, we describe the pre-clinical development of the first saRNA drug to enter the clinic. This saRNA, referred to as MTL-CEBPA, induces increased expression of the transcription factor CCAAT/enhancer-binding protein alpha (CEBPα), a tumour suppressor and critical regulator of hepatocyte function. MTL-CEBPA is presently in Phase I clinical trials for hepatocellular carcinoma (HCC). The clinical development of MTL-CEBPA will demonstrate "proof of concept" that saRNAs can provide the basis for drugs which enhance target gene expression and consequently improve treatment outcome in patients.
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Affiliation(s)
| | | | | | - John J. Rossi
- Address correspondence to this author at the Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, Duarte, CA, USA; Tel: 626-218-7390; Fax: 626-301-8371; E-mail:
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13
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Jiang BC, He LN, Wu XB, Shi H, Zhang WW, Zhang ZJ, Cao DL, Li CH, Gu J, Gao YJ. Promoted Interaction of C/EBPα with Demethylated Cxcr3 Gene Promoter Contributes to Neuropathic Pain in Mice. J Neurosci 2017; 37:685-700. [PMID: 28100749 DOI: 10.1523/JNEUROSCI.2262-16.2016] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 11/22/2016] [Accepted: 12/02/2016] [Indexed: 12/29/2022] Open
Abstract
DNA methylation has been implicated in the pathogenesis of chronic pain. However, the specific genes regulated by DNA methylation under neuropathic pain condition remain largely unknown. Here we investigated how chemokine receptor CXCR3 is regulated by DNA methylation and how it contributes to neuropathic pain induced by spinal nerve ligation (SNL) in mice. SNL increased Cxcr3 mRNA and protein expression in the neurons of the spinal cord. Meanwhile, the CpG (5'-cytosine-phosphate-guanine-3') island in the Cxcr3 gene promoter region was demethylated, and the expression of DNA methyltransferase 3b (DNMT3b) was decreased. SNL also increased the binding of CCAAT (cytidine-cytidine-adenosine-adenosine-thymidine)/enhancer binding protein α (C/EBPα) with Cxcr3 promoter and decreased the binding of DNMT3b with Cxcr3 promoter in the spinal cord. C/EBPα expression was increased in spinal neurons after SNL, and inhibition of C/EBPα by intrathecal small interfering RNA attenuated SNL-induced pain hypersensitivity and reduced Cxcr3 expression. Furthermore, SNL-induced mechanical allodynia and heat hyperalgesia were markedly reduced in Cxcr3-/- mice. Spinal inhibition of Cxcr3 by shRNA or CXCR3 antagonist also attenuated established neuropathic pain. Moreover, CXCL10, the ligand of CXCR3, was increased in spinal neurons and astrocytes after SNL. Superfusing spinal cord slices with CXCL10 enhanced spontaneous EPSCs and potentiated NMDA-induced and AMPA-induced currents of lamina II neurons. Finally, intrathecal injection of CXCL10 induced CXCR3-dependent pain hypersensitivity in naive mice. Collectively, our results demonstrated that CXCR3, increased by DNA demethylation and the enhanced interaction with C/EBPα, can be activated by CXCL10 to facilitate excitatory synaptic transmission and contribute to the maintenance of neuropathic pain. SIGNIFICANCE STATEMENT Peripheral nerve injury induces changes of gene expression in the spinal cord that may contribute to the pathogenesis of neuropathic pain. CXCR3 is a chemokine receptor. Whether it is involved in neuropathic pain and how it is regulated after nerve injury remain largely unknown. Our study demonstrates that spinal nerve ligation downregulates the expression of DNMT3b, which may cause demethylation of Cxcr3 gene promoter and facilitate the binding of CCAAT/enhancer binding protein α with Cxcr3 promoter and further increase CXCR3 expression in spinal neurons. The upregulated CXCR3 may contribute to neuropathic pain by facilitating central sensitization. Our study reveals an epigenetic mechanism underlying CXCR3 expression and also suggests that targeting the expression or activation of CXCR3 signaling may offer new therapeutics for neuropathic pain.
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