1
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Zamperla MG, Illi B, Barbi V, Cencioni C, Santoni D, Gagliardi S, Garofalo M, Zingale GA, Pandino I, Sbardella D, Cipolla L, Sabbioneda S, Farsetti A, Ripamonti C, Fossati G, Steinkühler C, Gaetano C, Atlante S. HDAC6 inhibition disrupts HDAC6-P300 interaction reshaping the cancer chromatin landscape. Clin Epigenetics 2024; 16:109. [PMID: 39155390 PMCID: PMC11331611 DOI: 10.1186/s13148-024-01725-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 08/08/2024] [Indexed: 08/20/2024] Open
Abstract
BACKGROUND Histone deacetylases (HDACs) are crucial regulators of gene expression, DNA synthesis, and cellular processes, making them essential targets in cancer research. HDAC6, specifically, influences protein stability and chromatin dynamics. Despite HDAC6's potential therapeutic value, its exact role in gene regulation and chromatin remodeling needs further clarification. This study examines how HDAC6 inactivation influences lysine acetyltransferase P300 stabilization and subsequent effects on chromatin structure and function in cancer cells. METHODS AND RESULTS We employed the HDAC6 inhibitor ITF3756, siRNA, or CRISPR/Cas9 gene editing to inactivate HDAC6 in different epigenomic backgrounds. Constantly, this inactivation led to significant changes in chromatin accessibility, particularly increased acetylation of histone H3 lysines 9, 14, and 27 (ATAC-seq and H3K27Ac ChIP-seq analysis). Transcriptomics, proteomics, and gene ontology analysis revealed gene changes in cell proliferation, adhesion, migration, and apoptosis. Significantly, HDAC6 inactivation altered P300 ubiquitination, stabilizing P300 and leading to downregulating genes critical for cancer cell survival. CONCLUSIONS Our study highlights the substantial impact of HDAC6 inactivation on the chromatin landscape of cancer cells and suggests a role for P300 in contributing to the anticancer effects. The stabilization of P300 with HDAC6 inhibition proposes a potential shift in therapeutic focus from HDAC6 itself to its interaction with P300. This finding opens new avenues for developing targeted cancer therapies, improving our understanding of epigenetic mechanisms in cancer cells.
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Affiliation(s)
| | - Barbara Illi
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185, Rome, Italy
| | - Veronica Barbi
- Laboratory of Epigenetics, Istituti Clinici Scientifici Maugeri IRCCS, 27100, Pavia, Italy
| | - Chiara Cencioni
- Institute for Systems Analysis and Computer Science, National Research Council (CNR)-IASI, 00185, Rome, Italy
| | - Daniele Santoni
- Institute for Systems Analysis and Computer Science, National Research Council (CNR)-IASI, 00185, Rome, Italy
| | - Stella Gagliardi
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, 27100, Pavia, Italy
| | - Maria Garofalo
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, 27100, Pavia, Italy
| | | | | | | | - Lina Cipolla
- Institute of Molecular Genetics, National Research Council (CNR), 27100, Pavia, Italy
| | - Simone Sabbioneda
- Institute of Molecular Genetics, National Research Council (CNR), 27100, Pavia, Italy
| | - Antonella Farsetti
- Institute for Systems Analysis and Computer Science, National Research Council (CNR)-IASI, 00185, Rome, Italy
| | - Chiara Ripamonti
- New Drug Incubator Department, Italfarmaco Group, 20092, Cinisello Balsamo, Italy
| | - Gianluca Fossati
- New Drug Incubator Department, Italfarmaco Group, 20092, Cinisello Balsamo, Italy
| | | | - Carlo Gaetano
- Laboratory of Epigenetics, Istituti Clinici Scientifici Maugeri IRCCS, 27100, Pavia, Italy.
| | - Sandra Atlante
- Institute for Systems Analysis and Computer Science, National Research Council (CNR)-IASI, 00185, Rome, Italy
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2
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Najar MA, Beyer JN, Crawford CEW, Burslem GM. The Interplay of Acetylation and Ubiquitination Controls PRMT1 Homeostasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.18.599616. [PMID: 38948822 PMCID: PMC11213003 DOI: 10.1101/2024.06.18.599616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
PRMT1 plays many important roles in both normal and disease biology, thus understanding it's regulation is crucial. Herein, we report the role of p300-mediated acetylation at K228 in triggering PRMT1 degradation through FBXL17-mediated ubiquitination. Utilizing mass-spectrometry, cellular biochemistry, and genetic code-expansion technologies, we elucidate a crucial mechanism independent of PRMT1 transcript levels. These results underscore the significance of acetylation in governing protein stability and expand our understanding of PRMT1 homeostasis. By detailing the molecular interplay between acetylation and ubiquitination involved in PRMT1 degradation, this work contributes to broader efforts in deciphering post-translational mechanisms that influence protein homeostasis.
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3
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Li X, Li W, Zhang Z, Wang W, Huang H. SIRT6 overexpression retards renal interstitial fibrosis through targeting HIPK2 in chronic kidney disease. Front Pharmacol 2022; 13:1007168. [PMID: 36172184 PMCID: PMC9510922 DOI: 10.3389/fphar.2022.1007168] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 08/22/2022] [Indexed: 11/27/2022] Open
Abstract
Introduction: Renal interstitial fibrosis is a common pathophysiological change in the chronic kidney disease (CKD). Nicotinamide adenine dinucleotide (NAD)-dependent deacetylase sirtuin 6 (SIRT6) is demonstrated to protect against kidney injury. Vitamin B3 is the mostly used form of NAD precursors. However, the role of SIRT6 overexpression in renal interstitial fibrosis of CKD and the association between dietary vitamin B3 intake and renal function remain to be elucidated. Methods: Wild-type (WT) and SIRT6-transgene (SIRT6-Tg) mice were given with high-adenine diets to establish CKD model. HK2 cells were exposed to transforming growth factor β1 (TGF-β1) in vitro to explore related mechanism. Population data from Multi-Ethnic Study of Atherosclerosis (MESA) was used to examine the association between dietary vitamin B3 intake and renal function decline. Results: Compared to WT mice, SIRT6-Tg mice exhibited alleviated renal interstitial fibrosis as evidenced by reduced collagen deposit, collagen I and α-smooth muscle actin expression. Renal function was also improved in SIRT6-Tg mice. Homeodomain interacting protein kinase 2 (HIPK2) was induced during the fibrogenesis in CKD, while HIPK2 was downregulated after SIRT6 overexpression. Further assay in vitro confirmed that SIRT6 depletion exacerbated epithelial-to-mesenchymal transition of HK2 cells, which might be linked with HIPK2 upregulation. HIPK2 was inhibited by SIRT6 in the post-transcriptional level. Population study indicated that higher dietary vitamin B3 intake was independently correlated with a lower risk of estimate glomerular filtration rate decline in those ≥65 years old during follow-up. Conclusion: SIRT6/HIPK2 axis serves as a promising target of renal interstitial fibrosis in CKD. Dietary vitamin B3 intake is beneficial for renal function in the old people.
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Affiliation(s)
- Xiaoxue Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Wenxin Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Zhengzhipeng Zhang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Weidong Wang
- Department of Pathophysiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Hui Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- *Correspondence: Hui Huang,
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4
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[Coactivator p300-induced H3K27 acetylation mediates lipopolysaccharide-induced inflammatory mediator synthesis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:321-329. [PMID: 35426794 PMCID: PMC9010983 DOI: 10.12122/j.issn.1673-4254.2022.03.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To investigate the role of acetylated modification induced by coactivator p300 in lipopolysaccharide (LPS)- induced inflammatory mediator synthesis and its molecular mechanism. METHODS Agilent SurePrint G3 Mouse Gene Expression V2 microarray chip and Western blotting were used to screen the molecules whose expression levels in mouse macrophages (RAW246.7) were correlated with the stimulation intensity of LPS. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (chip-qPCR) were used to verify the binding of the molecules to the promoters of IL-6 and TNF-α genes. The effects of transfection of RAW246.7 cells with overexpression or interfering plasmids on IL-6 and TNF-α synthesis were evaluated with ELISA, and the binding level of the target molecules and acetylation level of H3K27 in the promoter region of IL-6 and TNF-α genes were analyzed by chromatin immunoprecipitation sequencing technique (chip-seq). RESULTS Gene microarray chip data and Western blotting both confirmed a strong correlation of p300 expression with the stimulation intensity of LPS. Immunocoprecipitation confirmed the binding between p300 and c-myb. The results of EMSA demonstrated that c-myb (P < 0.05), but not p300, could directly bind to the promoter region of IL-6 and TNF-α genes; p300 could bind to the promoters only in the presence of c-myb (P < 0.05). The expressions of p65, p300 and c-myb did not show interactions. Both p300 overexpression and LPS stimulation could increase the level of promoter-binding p300 and H3K27 acetylation level, thus promoting p65 binding and inflammatory gene transcription; such effects were obviously suppressed by interference of c-myb expression (P < 0.05). Interference of p65 resulted in inhibition of p65 binding to the promoters and gene transcription (P < 0.05) without affecting p300 binding or H3K27 acetylation level. CONCLUSION LPS can stimulate the synthesis of p300, whose binding to the promoter region of inflammatory genes via c-myb facilitates the cohesion of p65 by inducing H3K27 acetylation, thus promoting the expression of the inflammatory genes.
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5
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Martins VF, LaBarge SA, Stanley A, Svensson K, Hung CW, Keinan O, Ciaraldi TP, Banoian D, Park JE, Ha C, Hetrick B, Meyer GA, Philp A, David LL, Henry RR, Aslan JE, Saltiel AR, McCurdy CE, Schenk S. p300 or CBP is required for insulin-stimulated glucose uptake in skeletal muscle and adipocytes. JCI Insight 2021; 7:141344. [PMID: 34813504 PMCID: PMC8765050 DOI: 10.1172/jci.insight.141344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 11/19/2021] [Indexed: 11/17/2022] Open
Abstract
While current thinking posits that insulin signaling to GLUT4 exocytic translocation and glucose uptake in skeletal muscle and adipocytes is controlled by phosphorylation-based signaling, many proteins in this pathway are acetylated on lysine residues. However, the importance of acetylation and lysine acetyltransferases to insulin-stimulated glucose uptake is incompletely defined. Here, we demonstrate that combined loss of the acetyltransferases E1A binding protein p300 (p300) and cAMP response element binding protein binding protein (CBP) in mouse skeletal muscle causes a complete loss of insulin-stimulated glucose uptake. Similarly, brief (i.e. 1 h) pharmacological inhibition of p300/CBP acetyltransferase activity recapitulates this phenotype in human and rodent myotubes, 3T3-L1 adipocytes, and mouse muscle. Mechanistically, these effects are due to p300/CBP-mediated regulation of GLUT4 exocytic translocation and occurs downstream of Akt signaling. Taken together, we highlight a fundamental role for acetylation and p300/CBP in the direct regulation of insulin-stimulated glucose transport in skeletal muscle and adipocytes.
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Affiliation(s)
- Vitor F Martins
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Samuel A LaBarge
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Alexandra Stanley
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Kristoffer Svensson
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Chao-Wei Hung
- Department of Medicine, University of California, San Diego, La Jolla, United States of America
| | - Omer Keinan
- Department of Medicine, University of California, San Diego, La Jolla, United States of America
| | - Theodore P Ciaraldi
- Department of Medicine, University of California, San Diego, La Jolla, United States of America
| | - Dion Banoian
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Ji E Park
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Christina Ha
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
| | - Byron Hetrick
- Department of Human Physiology, University of Oregon, Eugene, United States of America
| | - Gretchen A Meyer
- Program in Physical Therapy, Washington University in St. Louis, St. Louis, United States of America
| | - Andrew Philp
- Mitochondrial Metabolism and Ageing, Garvan Institute of Medical Research, Darlinghurst, Australia
| | - Larry L David
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, United States of America
| | - Robert R Henry
- Division of Endocrinology & Metabolism, VA San Diego Healthcare System, San Diego, United States of America
| | - Joseph E Aslan
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, United States of America
| | - Alan R Saltiel
- University of California, San Diego, La Jolla, United States of America
| | - Carrie E McCurdy
- Department of Human Physiology, University of Oregon, Eugene, United States of America
| | - Simon Schenk
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, United States of America
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6
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Haas J, Bloesel D, Bacher S, Kracht M, Schmitz ML. Chromatin Targeting of HIPK2 Leads to Acetylation-Dependent Chromatin Decondensation. Front Cell Dev Biol 2020; 8:852. [PMID: 32984337 PMCID: PMC7490299 DOI: 10.3389/fcell.2020.00852] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/10/2020] [Indexed: 11/13/2022] Open
Abstract
The protein kinase homeodomain-interacting protein kinase 2 (HIPK2) plays an important role in development and in the response to external cues. The kinase associates with an exceptionally large number of different transcription factors and chromatin regulatory proteins to direct distinct gene expression programs. In order to investigate the function of HIPK2 for chromatin compaction, HIPK2 was fused to the DNA-binding domains of Gal4 or LacI, thus allowing its specific targeting to binding sites for these transcription factors that were integrated in specific chromosome loci. Tethering of HIPK2 resulted in strong decompaction of euchromatic and heterochromatic areas. HIPK2-mediated heterochromatin decondensation started already 4 h after its chromatin association and required the functionality of its SUMO-interacting motif. This process was paralleled by disappearance of the repressive H3K27me3 chromatin mark, recruitment of the acetyltransferases CBP and p300 and increased histone acetylation at H3K18 and H4K5. HIPK2-mediated chromatin decompaction was strongly inhibited in the presence of a CBP/p300 inhibitor and completely blocked by the BET inhibitor JQ1, consistent with a causative role of acetylations for this process. Chromatin tethering of HIPK2 had only a minor effect on basal transcription, while it strongly boosted estrogen-triggered gene expression by acting as a transcriptional cofactor.
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Affiliation(s)
- Jana Haas
- Institute of Biochemistry, Justus-Liebig-University, Giessen, Germany.,Member of the German Center for Lung Research, Giessen, Germany
| | - Daniel Bloesel
- Institute of Biochemistry, Justus-Liebig-University, Giessen, Germany.,Member of the German Center for Lung Research, Giessen, Germany
| | - Susanne Bacher
- Institute of Biochemistry, Justus-Liebig-University, Giessen, Germany.,Member of the German Center for Lung Research, Giessen, Germany
| | - Michael Kracht
- Member of the German Center for Lung Research, Giessen, Germany.,Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University, Giessen, Germany
| | - M Lienhard Schmitz
- Institute of Biochemistry, Justus-Liebig-University, Giessen, Germany.,Member of the German Center for Lung Research, Giessen, Germany
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7
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Ma Y, Wu C, Liu J, Liu Y, Lv J, Sun Z, Wang D, Jiang C, Sheng Q, You Z, Nie Z. The stability and antiapoptotic activity of Bm30K-3 can be improved by lysine acetylation in the silkworm, Bombyx mori. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2020; 103:e21649. [PMID: 31777104 DOI: 10.1002/arch.21649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/05/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Acetylation is an important, highly conserved, and reversible post-translational modification of proteins. Previously, we showed by nano-HPLC/MS/MS that many nutrient storage proteins in the silkworm are acetylated. Among these proteins, most of the known 30K proteins were shown to be acetylated, including 23 acetylated 30K proteins containing 49 acetylated sites (Kac), indicating the importance of the acetylation of 30K proteins in silkworm. In this study, Bm30K-3, a 30K protein containing three Kac sites, was further assessed in functional studies of its acetylation. Increasing the level of Bm30K-3 acetylation by adding the deacetylase inhibitor trichostatin A (TSA) increased the levels of this protein and further inhibited cellular apoptosis induced by H2 O2 . In contrast, decreasing the level of acetylation by adding the acetylase inhibitor C646 could reduce the level of Bm30K-3 and increase H2 O2 -induced apoptosis. Subsequently, BmN cells were treated with CHX and MG132, and increasing the acetylation level using TSA was shown to inhibit protein degradation and improve the stability of Bm30K-3. Furthermore, the acetylation of Bm30K-3 could compete with its ability to be ubiquitinated, suggesting that acetylation could inhibit the ubiquitin-mediated proteasome degradation pathway, improving the stability and accumulation of proteins in cells. These results further indicate that acetylation might regulate nutrition storage and utilization in Bombyx mori, which requires further study.
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Affiliation(s)
- Yafei Ma
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Chengcheng Wu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Jiahan Liu
- School of Forestry and Biotechnology, Zhejiang A & F University, Linan, China
| | - Yue Liu
- Zhejiang Economic & Trade Polytechnic, Hangzhou, China
| | - Jiao Lv
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zihan Sun
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Dan Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Caiying Jiang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Qing Sheng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhengying You
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zuoming Nie
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
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8
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An Alternative Splice Variant of HIPK2 with Intron Retention Contributes to Cytokinesis. Cells 2020; 9:cells9020484. [PMID: 32093146 PMCID: PMC7072727 DOI: 10.3390/cells9020484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/10/2020] [Accepted: 02/17/2020] [Indexed: 12/27/2022] Open
Abstract
HIPK2 is a DYRK-like kinase involved in cellular stress response pathways, development, and cell division. Two alternative splice variants of HIPK2, HIPK2-FL and HIPK2-Δe8, have been previously identified as having different protein stability but similar functional activity in the stress response. Here, we describe one additional HIPK2 splice variant with a distinct subcellular distribution and functional activity in cytokinesis. This novel splice variant lacks the last two exons and retains intron13 with a stop codon after 89 bp of the intron, generating a short isoform, HIPK2-S, that is detectable by 2D Western blots. RT-PCR analyses of tissue arrays and tumor samples show that HIPK2-FL and HIPK2-S are expressed in normal human tissues in a tissue-dependent manner and differentially expressed in human colorectal and pancreatic cancers. Gain- and loss-of-function experiments showed that in contrast to HIPK2-FL, HIPK2-S has a diffuse, non-speckled distribution and is not involved in the DNA damage response. Rather, we found that HIPK2-S, but not HIPK2-FL, localizes at the intercellular bridge, where it phosphorylates histone H2B and spastin, both required for faithful cell division. Altogether, these data show that distinct human HIPK2 splice variants are involved in distinct HIPK2-regulated functions like stress response and cytokinesis.
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9
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Chen P, Duan X, Li X, Li J, Ba Q, Wang H. HIPK2 suppresses tumor growth and progression of hepatocellular carcinoma through promoting the degradation of HIF-1α. Oncogene 2020; 39:2863-2876. [PMID: 32034309 DOI: 10.1038/s41388-020-1190-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/15/2020] [Accepted: 01/23/2020] [Indexed: 12/29/2022]
Abstract
Aberrant angiogenesis of hepatocellular carcinoma (HCC) leads to tumor growth and local or distant metastasis. Uncovering the underlying mechanisms for the neoangiogenesis of HCC can provide novel potential therapeutic targets in the clinic. Here, we reported that serine/threonine homeodomain-interacting protein kinase 2 (HIPK2) was frequently downregulated in HCC tissues compared with the adjacent normal tissues, and patients with lower HIPK2 protein expression were associated with worse overall survival. Both in vitro and in vivo, HIPK2 inhibited the migration of HCC cells, as well as tumor growth and metastasis in xenograft and orthotopic syngeneic HCC mouse models. Furthermore, HIPK2 inhibited the angiogenesis in HCC tumors. Under the hypoxic condition, HIPK2 knockdown enhanced the angiogenesis and the key regulator, HIF-1α signaling pathway; however, HIPK2 overexpression downregulated the tumoral angiogenesis and HIF-1α signaling. In HCC cells, HIPK2 could directly bind to HIF-1α and stimulate the ubiquitination of HIF-1α for proteasomal degradation. HIF-1α knockout partially rescued the promoting effect of HIPK2 depletion on angiogenesis and tumor growth. In conclusion, the downregulation of HIPK2 could enhance the angiogenesis in HCC through inducing the HIF-1α pathway, and further contribute to tumor growth and metastasis, which may provide a novel therapeutic strategy for HCC.
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Affiliation(s)
- Peizhan Chen
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, PR China.,CAS Key Laboratory of Nutrition, Metabolism and Food safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, PR China
| | - Xiaohua Duan
- CAS Key Laboratory of Nutrition, Metabolism and Food safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, PR China
| | - Xiaoguang Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, PR China
| | - Jingquan Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, PR China
| | - Qian Ba
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, PR China.
| | - Hui Wang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, PR China. .,CAS Key Laboratory of Nutrition, Metabolism and Food safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, PR China.
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10
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Yang F, Zhu B, Liu J, Liu Y, Jiang C, Sheng Q, Qiu J, Nie Z. The effect of acetylation on the protein stability of BmApoLp-III in the silkworm, Bombyx mori. INSECT MOLECULAR BIOLOGY 2020; 29:104-111. [PMID: 31390480 DOI: 10.1111/imb.12613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/26/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Acetylation is an important, reversible posttranslational modification to a protein. In a previous study, we found that there were a large number of acetylated sites in various nutrient storage proteins of the silkworm haemolymph. In this study, we confirmed that acetylation can affect the stability of nutrient storage protein Bombyx mori apolipophorin-III (BmApoLp-III). First, the expression of BmApoLp-III could be upregulated when BmN cells were treated with the deacetylase inhibitor panobinostat (LBH589); similarly, the expression was downregulated when the cells were treated with the acetylase inhibitor C646. Furthermore, the increase in acetylation by LBH589 could inhibit the degradation and improve the accumulation of BmApoLp-III in BmN cells treated with cycloheximide and MG132 respectively. Moreover, we found that an increase in acetylation could decrease the ubiquitination of BmApoLp-III and vice versa; therefore, we predicted that acetylation could improve the stability of BmApoLp-III by competing for ubiquitination and inhibiting the protein degradation pathway mediated by ubiquitin. Additionally, BmApoLp-III had an antiapoptosis function that increased after LBH589 treatment, which might have been due to the improved protein stability after acetylation. These results have laid the foundation for further study on the mechanism of acetylation in regulating the storage and utilization of silkworm nutrition.
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Affiliation(s)
- F Yang
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - B Zhu
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - J Liu
- School of Forestry and Biotechnology, Zhejiang A&F University, Linan, China
| | - Y Liu
- Zhejiang Economic & Trade Polytechnic, Hangzhou, China
| | - C Jiang
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Q Sheng
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - J Qiu
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Z Nie
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
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11
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Liang L, Xie R, Lu R, Ma R, Wang X, Wang F, Liu B, Wu S, Wang Y, Zhang H. Involvement of homodomain interacting protein kinase 2-c-Jun N-terminal kinase/c-Jun cascade in the long-term synaptic toxicity and cognition impairment induced by neonatal Sevoflurane exposure. J Neurochem 2020; 154:372-388. [PMID: 31705656 PMCID: PMC7496229 DOI: 10.1111/jnc.14910] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/23/2019] [Accepted: 11/05/2019] [Indexed: 12/11/2022]
Abstract
Sevoflurane is one of the most widely used anesthetics with recent concerns rising about its pediatric application. The synaptic toxicity and mechanisms underlying its long‐term cognition impairment remain unclear. In this study, we investigated the expression and roles of homeodomain interacting protein kinase 2 (HIPK2), a stress activating kinase involved in neuronal survival and synaptic plasticity, and its downstream c‐Jun N‐terminal kinase (JNK)/c‐Jun signaling in the long‐term toxicity of neonatal Sevoflurane exposure. Our data showed that neonatal Sevoflurane exposure results in impairment of memory, enhancement of anxiety, less number of excitatory synapses and lower levels of synaptic proteins in the hippocampus of adult rats without significant changes of hippocampal neuron numbers. Up‐regulation of HIPK2 and JNK/c‐Jun was observed in hippocampal granular neurons shortly after Sevoflurane exposure and persisted to adult. 5‐((6‐Oxo‐5‐(6‐(piperazin‐1‐yl)pyridin‐3‐yl)‐1,6‐dihydropyridin‐3‐yl)methylene)thiazolidine‐2,4‐dione trifluoroacetate, antagonist of HIPK2, could significantly rescue the cognition impairment, decrease in long‐term potentiation, reduction in spine density and activation of JNK/c‐Jun induced by Sevoflurane. JNK antagonist SP600125 partially restored synapse development and cognitive function without affecting the expression of HIPK2. These data, in together, revealed a novel role of HIPK2‐JNK/c‐Jun signaling in the long‐term synaptic toxicity and cognition impairment of neonatal Sevoflurane exposure, indicating HIPK2‐JNK/c‐Jun cascade as a potential target for reducing the synaptic toxicity of Sevoflurane. ![]()
Cover Image for this issue: doi: 10.1111/jnc.14757.
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Affiliation(s)
- Lirong Liang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Rougang Xie
- Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Rui Lu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Ruixue Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Xiaoxia Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Fengjuan Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Bing Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Shengxi Wu
- Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Yazhou Wang
- Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Hui Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research, Center for Dental Materials and Advanced Manufacture, Department of Anethesiology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
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12
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Zhang H, Wang L, Bai J, Jiao W, Wang M. MIER3 suppresses the progression of non-small cell lung cancer by inhibiting Wnt/β-Catenin pathway and histone acetyltransferase activity. Transl Cancer Res 2020; 9:346-357. [PMID: 35117188 PMCID: PMC8798777 DOI: 10.21037/tcr.2020.01.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/06/2020] [Indexed: 11/06/2022]
Abstract
BACKGROUND The mesoderm induction early response 1, family member 3 (MIER3) gene has been recognized as potentially being associated with cancer. However, in relation to the development of non-small cell lung cancer (NSCLC), the expression pattern and the role of MIER3 are yet to be reported. The aim of this research was to investigate the rate of expression of MIER3 in NSCLC cells and tissues and to investigate the role of MIER3 in NSCLC. METHODS Seventeen patients received NSCLC tissues and corresponding healthy tissues. MTT assay was used to determine cell proliferation. For detecting mRNA and protein expression, we used both quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot method. To measure cell apoptosis and cell cycle distribution, we applied the flow cytometry technique. We used a wound-healing assay and a Transwell invasion assay to study cell migration and invasion. RESULTS In comparison with adjacent normal tissues, the expression of MIER3 was down-regulated in NSCLC tissues. In addition, the level of MIER3 in NSCLC cell lines was also lower than in pulmonary epithelial cell BEAS-2B. Moreover, when MIER3 was overexpressed, cell proliferation, migration, and invasion were significantly inhibited, apoptosis increased, and cell cycle arrest was induced in A549 and H460 cells. MIER3 overexpression also suppressed tumor growth in NSCLC xenograft mouse models. Furthermore, our study demonstrated that MIER3 down-regulated the Wnt/β-catenin signaling pathway in NSCLC cells. More importantly, MIER3 decreased the activity of histone acetyltransferase (HAT) p300, which may have contributed to its regulation on β-catenin and tumorigenesis. CONCLUSIONS The data suggests MIER3 takes on the tumor-suppressor role in the progression of NSCLC and, therefore, could prove to be a valuable clinical marker in the prognosis of the disease.
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Affiliation(s)
- Hongye Zhang
- Department of Oncology, Linyi Central Hospital, Linyi 276400, China
| | - Ling Wang
- Department of Nephrology, Yishui People’s Hospital, Linyi 276400, China
| | - Juan Bai
- Department of Oncology, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - Wenyu Jiao
- Department of Respiratory and Critical Care Medicine, Xi’an Daxing Hospital, Xi’an 710016, China
| | - Mingxia Wang
- Department of Oncology, Linyi Central Hospital, Linyi 276400, China
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13
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Kim J, Kim YS. Effect of HIV-1 Tat on the formation of the mitotic spindle by interaction with ribosomal protein S3. Sci Rep 2018; 8:8680. [PMID: 29875444 PMCID: PMC5989196 DOI: 10.1038/s41598-018-27008-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 05/21/2018] [Indexed: 01/04/2023] Open
Abstract
Human immunodeficiency virus type 1 (HIV-1) Tat, an important regulator of viral transcription, interacts with diverse cellular proteins and promotes or inhibits cell proliferation. Here, we show that ribosomal protein S3 (RPS3) plays an important role in mitosis through an interaction with α-tubulin and that Tat binds to and inhibits the localization of RPS3 in the mitotic spindle during mitosis. RPS3 colocalized with α-tubulin around chromosomes in the mitotic spindle. Depletion of RPS3 promoted α-tubulin assembly, while overexpression of RPS3 impaired α-tubulin assembly. Depletion of RPS3 resulted in aberrant mitotic spindle formation, segregation failure, and defective abscission. Moreover, ectopic expression of RPS3 rescued the cell proliferation defect in RPS3-knockdown cells. HIV-1 Tat interacted with RPS3 through its basic domain and increased the level of RPS3 in the nucleus. Expression of Tat caused defects in mitotic spindle formation and chromosome assembly in mitosis. Moreover, the localization of RPS3 in the mitotic spindle was disrupted when HIV-1 Tat was expressed in HeLa and Jurkat cells. These results suggest that Tat inhibits cell proliferation via an interaction with RPS3 and thereby disrupts mitotic spindle formation during HIV-1 infection. These results might provide insight into the mechanism underlying lymphocyte pathogenesis during HIV-1 infection.
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Affiliation(s)
- Jiyoung Kim
- Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Yusung-gu, Daejeon, 34134, South Korea
| | - Yeon-Soo Kim
- Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Yusung-gu, Daejeon, 34134, South Korea.
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