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Miyamura Y, Kamei S, Matsuo M, Yamazaki M, Usuki S, Yasunaga K, Uemura A, Satou Y, Ohguchi H, Minami T. FOXO1 stimulates tip cell-enriched gene expression in endothelial cells. iScience 2024; 27:109161. [PMID: 38444610 PMCID: PMC10914484 DOI: 10.1016/j.isci.2024.109161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 11/29/2023] [Accepted: 02/05/2024] [Indexed: 03/07/2024] Open
Abstract
Forkhead box O (FOXO) family proteins are expressed in various cells, and play crucial roles in cellular metabolism, apoptosis, and aging. FOXO1-null mice exhibit embryonic lethality due to impaired endothelial cell (EC) maturation and vascular remodeling. However, FOXO1-mediated genome-wide regulation in ECs remains unclear. Here, we demonstrate that VEGF dynamically regulates FOXO1 cytosol-nucleus translocation. FOXO1 re-localizes to the nucleus via PP2A phosphatase. RNA-seq combined with FOXO1 overexpression/knockdown in ECs demonstrated that FOXO1 governs the VEGF-responsive tip cell-enriched genes, and further inhibits DLL4-NOTCH signaling. Endogenous FOXO1 ChIP-seq revealed that FOXO1 binds to the EC-unique tip-enriched genes with co-enrichment of EC master regulators, and the condensed chromatin region as a pioneer factor. We identified new promoter/enhancer regions of the VEGF-responsive tip cell genes regulated by FOXO1: ESM1 and ANGPT2. This is the first study to identify cell type-specific FOXO1 functions, including VEGF-mediated tip cell definition in primary cultured ECs.
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Affiliation(s)
- Yuri Miyamura
- Divison of Molecular and Vascular Biology, IRDA, Kumamoto University, Kumamoto 860-0811, Japan
| | - Shunsuke Kamei
- Divison of Molecular and Vascular Biology, IRDA, Kumamoto University, Kumamoto 860-0811, Japan
| | - Misaki Matsuo
- Division of Genomics and Transcriptomics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 860-8556, Japan
| | - Masaya Yamazaki
- Division of Medical Biochemistry, Graduate School of Medical Science, Kumamoto University, Kumamoto 860-8556, Japan
| | - Shingo Usuki
- Liaison Laboratory Research Promotion Center, IMEG, Kumamoto University, Kumamoto 860-8556, Japan
| | - Keiichiro Yasunaga
- Liaison Laboratory Research Promotion Center, IMEG, Kumamoto University, Kumamoto 860-8556, Japan
| | - Akiyoshi Uemura
- Department of Retinal Vascular Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Yorifumi Satou
- Division of Genomics and Transcriptomics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 860-8556, Japan
| | - Hiroto Ohguchi
- Division of Disease Epigenetics, IRDA, Kumamoto University, Kumamoto 860-0811, Japan
| | - Takashi Minami
- Divison of Molecular and Vascular Biology, IRDA, Kumamoto University, Kumamoto 860-0811, Japan
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2
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Jauslin WT, Schild M, Schaefer T, Borsari C, Orbegozo C, Bissegger L, Zhanybekova S, Ritz D, Schmidt A, Wymann M, Gillingham D. A high affinity pan-PI3K binding module supports selective targeted protein degradation of PI3Kα. Chem Sci 2024; 15:683-691. [PMID: 38179525 PMCID: PMC10763047 DOI: 10.1039/d3sc04629j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/01/2023] [Indexed: 01/06/2024] Open
Abstract
Class I phosphoinositide 3-kinases (PI3Ks) control cellular growth, but are also essential in insulin signaling and glucose homeostasis. Pan-PI3K inhibitors thus generate substantial adverse effects, a reality that has plagued drug development against this target class. We present here evidence that a high affinity binding module with the capacity to target all class I PI3K isoforms can facilitate selective degradation of the most frequently mutated class I isoform, PI3Kα, when incorporated into a cereblon-targeted (CRBN) degrader. A systematic proteomics study guided the fine tuning of molecular features to optimize degrader selectivity and potency. Our work resulted in the creation of WJ112-14, a PI3Kα-specific nanomolar degrader that should serve as an important research tool for studying PI3K biology. Given the toxicities observed in the clinic with unselective PI3Kα inhibitors, the results here offer a new approach toward selectively targeting this frequently mutated oncogenic driver.
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Affiliation(s)
| | - Matthias Schild
- Department of Chemistry, University of Basel 4056 Basel Switzerland
| | - Thorsten Schaefer
- Department of Biomedicine, University of Basel 4031 Basel Switzerland
| | - Chiara Borsari
- Department of Biomedicine, University of Basel 4031 Basel Switzerland
| | - Clara Orbegozo
- Department of Biomedicine, University of Basel 4031 Basel Switzerland
| | - Lukas Bissegger
- Department of Biomedicine, University of Basel 4031 Basel Switzerland
| | | | - Danilo Ritz
- Proteomics Core Facility, Biozentrum, University of Basel 4056 Basel Switzerland
| | - Alexander Schmidt
- Proteomics Core Facility, Biozentrum, University of Basel 4056 Basel Switzerland
| | - Matthias Wymann
- Department of Biomedicine, University of Basel 4031 Basel Switzerland
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3
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Guo F, Liu Y, Cheng Y, Zhang Q, Quan W, Wei Y, Hong L. Transcriptome analysis reveals the potential biological function of FSCN1 in HeLa cervical cancer cells. PeerJ 2022; 10:e12909. [PMID: 35178306 PMCID: PMC8817631 DOI: 10.7717/peerj.12909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 01/19/2022] [Indexed: 01/11/2023] Open
Abstract
Fascin actin-bundling protein 1 (FSCN1), an actin-bundling protein associated with cell migration and invasion, is highly expressed in various tumor tissues. FSCN1 has also been reported to be a marker of increased invasive potential in cervical cancers. However, the functions of FSCN1 are still not fully understood in cervical cancers. Here, the gene expression profile of HeLa cells transfected with FSCN1 shRNA (shFSCN1) was compared with that of cells transfected with empty vector (shCtrl). The results showed that shFSCN1 extensively affected the transcription level of 5,043 genes in HeLa cells. In particular, Gene Ontology (GO) analysis showed that a large number of upregulated genes were annotated with terms including transcription regulation and DNA binding. The downregulated genes were enriched in some cancer pathways, including angiogenesis and cell adhesion. qPCR validation confirmed that FSCN1 knockdown significantly affected the expression of selected genes in HeLa cells either negatively or positively. Expression analysis in TCGA (The Cancer Genome Atlas) revealed that FSCN1 had negative correlations with several transcription factors and a positive correlation with an angiogenic factor (angiopoietin like 4, ANGPTL4) in cervical tumor tissue. In particular, validation by Western blotting showed that FSCN1 knockdown decreased the protein level of ANGPTL4. Our results demonstrated that FSCN1 is not only an actin-binding protein but also a transcriptional regulator and an angiogenic factor in cervical cancer. Thus, our study provides important insights for further study on the regulatory mechanism of FSCN1 in cervical cancer.
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Affiliation(s)
- Fengqin Guo
- Department of Obstetrics & Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yanliang Liu
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yanxiang Cheng
- Department of Obstetrics & Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Qifan Zhang
- Department of Obstetrics & Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Weili Quan
- ABLife BioBigData Institute, Wuhan, Hubei Province, China
| | - Yaxun Wei
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei Province, China
| | - Li Hong
- Department of Obstetrics & Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
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4
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FOXO1 forkhead domain mutants in B-cell lymphoma lack transcriptional activity. Sci Rep 2022; 12:1309. [PMID: 35079069 PMCID: PMC8789783 DOI: 10.1038/s41598-022-05334-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/11/2022] [Indexed: 11/16/2022] Open
Abstract
Somatic point mutations of the FOXO1 transcription factor were reported in non-Hodgkin lymphoma including diffuse large B-cell lymphoma, follicular lymphoma and Burkitt lymphoma. These alterations were associated with a poor prognosis and resistance to therapy. Nearly all amino acid substitutions are localized in two major clusters, affecting either the N-terminal region (Nt mutations) or the forkhead DNA-binding domain (DBD mutations). While recent studies have focused on Nt mutations, we characterized FOXO1 DBD mutants. We analyzed their transcriptional activity, DNA binding, phosphorylation and protein–protein interaction. The majority of DBD mutants showed a decrease in activity and DNA binding, while preserving AKT phosphorylation and interaction with the cytoplasmic ATG7 protein. In addition, we investigated the importance of conserved residues of the α-helix 3 of the DBD. Amino acids I213, R214, H215 and L217 appeared to be crucial for FOXO1 activity. Our data underlined the key role of multiple amino-acid residues of the forkhead domain in FOXO1 transcriptional activity and revealed a new type of FOXO1 loss-of-function mutations in B-cell lymphoma.
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5
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Khattar D, Fernandes S, Snowball J, Guo M, Gillen MC, Jain SS, Sinner D, Zacharias W, Swarr DT. PI3K signaling specifies proximal-distal fate by driving a developmental gene regulatory network in SOX9+ mouse lung progenitors. eLife 2022; 11:67954. [PMID: 35976093 PMCID: PMC9427112 DOI: 10.7554/elife.67954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
The tips of the developing respiratory buds are home to important progenitor cells marked by the expression of SOX9 and ID2. Early in embryonic development (prior to E13.5), SOX9+progenitors are multipotent, generating both airway and alveolar epithelium, but are selective progenitors of alveolar epithelial cells later in development. Transcription factors, including Sox9, Etv5, Irx, Mycn, and Foxp1/2 interact in complex gene regulatory networks to control proliferation and differentiation of SOX9+progenitors. Molecular mechanisms by which these transcription factors and other signaling pathways control chromatin state to establish and maintain cell-type identity are not well-defined. Herein, we analyze paired gene expression (RNA-Seq) and chromatin accessibility (ATAC-Seq) data from SOX9+ epithelial progenitor cells (EPCs) during embryonic development in Mus musculus. Widespread changes in chromatin accessibility were observed between E11.5 and E16.5, particularly at distal cis-regulatory elements (e.g. enhancers). Gene regulatory network (GRN) inference identified a common SOX9+ progenitor GRN, implicating phosphoinositide 3-kinase (PI3K) signaling in the developmental regulation of SOX9+ progenitor cells. Consistent with this model, conditional ablation of PI3K signaling in the developing lung epithelium in mouse resulted in an expansion of the SOX9+ EPC population and impaired airway epithelial cell differentiation. These data demonstrate that PI3K signaling is required for epithelial patterning during lung organogenesis, and emphasize the combinatorial power of paired RNA and ATAC seq in defining regulatory networks in development.
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Affiliation(s)
- Divya Khattar
- Department of Pediatrics, University of CincinnatiCincinnatiUnited States
| | - Sharlene Fernandes
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States
| | - John Snowball
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States
| | - Minzhe Guo
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States
| | - Matthew C Gillen
- Department of Pediatrics, University of CincinnatiCincinnatiUnited States
| | - Suchi Singh Jain
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Wake Forest UniversityWinston-SalemUnited States
| | - Debora Sinner
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States,Department of Pediatrics, University of CincinnatiCincinnatiUnited States
| | - William Zacharias
- Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States,Department of Medicine, University of CincinnatiCincinnatiUnited States
| | - Daniel T Swarr
- Department of Pediatrics, University of CincinnatiCincinnatiUnited States,Perinatal Institute, Cincinnati Children's Hospital Medical CenterCincinnatiUnited States,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical CenterWinston-SalemUnited States,Department of Pediatrics, University of CincinnatiCincinnatiUnited States
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6
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Bollaert E, de Rocca Serra A, Demoulin JB. The HMG box transcription factor HBP1: a cell cycle inhibitor at the crossroads of cancer signaling pathways. Cell Mol Life Sci 2019; 76:1529-1539. [PMID: 30683982 PMCID: PMC11105191 DOI: 10.1007/s00018-019-03012-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/20/2018] [Accepted: 01/15/2019] [Indexed: 12/19/2022]
Abstract
HMG box protein 1 (HBP1) is a transcription factor and a potent cell cycle inhibitor in normal and cancer cells. HBP1 activates or represses the expression of different cell cycle genes (such as CDKN2A, CDKN1A, and CCND1) through direct DNA binding, cofactor recruitment, chromatin remodeling, or neutralization of other transcription factors. Among these are LEF1, TCF4, and MYC in the WNT/beta-catenin pathway. HBP1 also contributes to oncogenic RAS-induced senescence and terminal cell differentiation. Collectively, these activities suggest a tumor suppressor function. However, HBP1 is not listed among frequently mutated cancer driver genes. Nevertheless, HBP1 expression is lower in several tumor types relative to matched normal tissues. Several micro-RNAs, such as miR-155, miR-17-92, and miR-29a, dampen HBP1 expression in cancer cells of various origins. The phosphatidylinositol-3 kinase (PI3K)/AKT pathway also inhibits HBP1 transcription by preventing FOXO binding to the HBP1 promoter. In addition, AKT directly phosphorylates HBP1, thereby inhibiting its transcriptional activity. Taken together, these findings place HBP1 at the center of a network of micro-RNAs and oncoproteins that control cell proliferation. In this review, we discuss our current understanding of HBP1 function in human physiology and diseases.
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Affiliation(s)
- Emeline Bollaert
- Université Catholique de Louvain, de Duve Institute, Avenue Hippocrate 75, 1200, Brussels, Belgium
| | - Audrey de Rocca Serra
- Université Catholique de Louvain, de Duve Institute, Avenue Hippocrate 75, 1200, Brussels, Belgium
| | - Jean-Baptiste Demoulin
- Université Catholique de Louvain, de Duve Institute, Avenue Hippocrate 75, 1200, Brussels, Belgium.
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7
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ALK positively regulates MYCN activity through repression of HBP1 expression. Oncogene 2018; 38:2690-2705. [PMID: 30538293 DOI: 10.1038/s41388-018-0595-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 05/03/2018] [Accepted: 10/23/2018] [Indexed: 02/08/2023]
Abstract
ALK mutations occur in 10% of primary neuroblastomas and represent a major target for precision treatment. In combination with MYCN amplification, ALK mutations infer an ultra-high-risk phenotype resulting in very poor patient prognosis. To open up opportunities for future precision drugging, a deeper understanding of the molecular consequences of constitutive ALK signaling and its relationship to MYCN activity in this aggressive pediatric tumor entity will be essential. We show that mutant ALK downregulates the 'HMG-box transcription factor 1' (HBP1) through the PI3K-AKT-FOXO3a signaling axis. HBP1 inhibits both the transcriptional activating and repressing activity of MYCN, the latter being mediated through PRC2 activity. HBP1 itself is under negative control of MYCN through miR-17~92. Combined targeting of HBP1 by PI3K antagonists and MYCN signaling by BET- or HDAC-inhibitors blocks MYCN activity and significantly reduces tumor growth, suggesting a novel targeted therapy option for high-risk neuroblastoma.
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8
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Su C, Cheng X, Li Y, Han Y, Song X, Yu D, Cao X, Liu Z. MiR-21 improves invasion and migration of drug-resistant lung adenocarcinoma cancer cell and transformation of EMT through targeting HBP1. Cancer Med 2018; 7:2485-2503. [PMID: 29663730 PMCID: PMC6010699 DOI: 10.1002/cam4.1294] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/22/2017] [Accepted: 11/26/2017] [Indexed: 12/12/2022] Open
Abstract
This study was aimed at the investigation of the effects of miR-21 on drug resistance, invasion, migration, and epithelial-mesenchymal transition (EMT) of lung adenocarcinoma cells and the related molecular mechanisms. Cell viability of A549 cell line was measured by MTT assay. Wound healing assay and transwell assay were, respectively, employed to examine cell migration and invasion abilities. The cells were transfected with miR-21 mimic or inhibitor using Lipofectamine 3000. The target relationship between miR-21 and HBP1 was confirmed by luciferase reporter gene assay. Western blot and qRT-PCR were used to examine the expression of HBP1 and EMT-related molecules. Compared with A549 cells, drug resistance of A549/PTX cells and A549/DDP cells were obviously stronger. A549/PTX cells and A549/DDP cells had stronger ability of migration and invasion compared with parental A549 cells. Meanwhile, EMT of A549/PTX and A549/DDP was significantly higher than that of A549 cells. MiR-21 promoted migration, invasion, and EMT of human lung adenocarcinoma cancer cells. Our experiment also verified the target relationship between miR-21 and HBP1. MiR-21 may affect migration and invasion ability of drug-resistant lung adenocarcinoma cells by targeting HBP1, therefore modulating EMT.
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Affiliation(s)
- Chongyu Su
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Xu Cheng
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Yunsong Li
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Yi Han
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Xiaoyun Song
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Daping Yu
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Xiaoqing Cao
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
| | - Zhidong Liu
- Department of Thoracic SurgeryBeijing Chest HospitalCapital Medical UniversityBeijing101149China
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9
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Bollaert E, Johanns M, Herinckx G, de Rocca Serra A, Vandewalle VA, Havelange V, Rider MH, Vertommen D, Demoulin JB. HBP1 phosphorylation by AKT regulates its transcriptional activity and glioblastoma cell proliferation. Cell Signal 2018; 44:158-170. [PMID: 29355710 DOI: 10.1016/j.cellsig.2018.01.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/22/2017] [Accepted: 01/10/2018] [Indexed: 12/31/2022]
Abstract
The HMG-box protein 1 (HBP1) is a transcriptional regulator and a potential tumor suppressor that controls cell proliferation, differentiation and oncogene-mediated senescence. In a previous study, we showed that AKT activation through the PI3K/AKT/FOXO pathway represses HBP1 expression at the transcriptional level in human fibroblasts as well as in cancer cell lines. In the present study, we investigated whether AKT could also regulate HBP1 directly. First, AKT1 phosphorylated recombinant human HBP1 in vitro on three conserved sites, Ser380, Thr484 and Ser509. In living cells, we confirmed the phosphorylation of HBP1 on residues 380 and 509 using phospho-specific antibodies. HBP1 phosphorylation was induced by growth factors, such as EGF or IGF-1, which activated AKT. Conversely, it was blocked by treatment of cells with an AKT inhibitor (MK-2206) or by AKT knockdown. Next, we observed that HBP1 transcriptional activity was strongly modified by mutating its phosphorylation sites. The regulation of target genes such as DNMT1, P47phox, p16INK4A and cyclin D1 was also affected. HBP1 had previously been shown to limit glioma cell growth. Accordingly, HBP1 silencing by small-hairpin RNA increased human glioblastoma cell proliferation. Conversely, HBP1 overexpression decreased cell growth and foci formation. This effect was amplified by mutations that prevented phosphorylation by AKT, and blunted by mutations that mimicked phosphorylation. In conclusion, our results suggest that HBP1 phosphorylation by AKT blocks its functions as transcriptional regulator and tumor suppressor.
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Affiliation(s)
- Emeline Bollaert
- de Duve Institute, Université Catholique de Louvain (UCL), MEXP Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Manuel Johanns
- de Duve Institute, Université Catholique de Louvain (UCL), PHOS Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Gaëtan Herinckx
- de Duve Institute, Université Catholique de Louvain (UCL), PHOS Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Audrey de Rocca Serra
- de Duve Institute, Université Catholique de Louvain (UCL), MEXP Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Virginie A Vandewalle
- de Duve Institute, Université Catholique de Louvain (UCL), MEXP Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Violaine Havelange
- de Duve Institute, Université Catholique de Louvain (UCL), MEXP Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Mark H Rider
- de Duve Institute, Université Catholique de Louvain (UCL), PHOS Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Didier Vertommen
- de Duve Institute, Université Catholique de Louvain (UCL), PHOS Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium
| | - Jean-Baptiste Demoulin
- de Duve Institute, Université Catholique de Louvain (UCL), MEXP Unit, Avenue Hippocrate 75, Box B1.74.05, 1200 Brussels, Belgium.
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10
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Hwang I, Oh H, Santo E, Kim DY, Chen JW, Bronson RT, Locasale JW, Na Y, Lee J, Reed S, Toth M, Yu WH, Muller FL, Paik J. FOXO protects against age-progressive axonal degeneration. Aging Cell 2018; 17. [PMID: 29178390 PMCID: PMC5771393 DOI: 10.1111/acel.12701] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2017] [Indexed: 12/16/2022] Open
Abstract
Neurodegeneration resulting in cognitive and motor impairment is an inevitable consequence of aging. Little is known about the genetic regulation of this process despite its overriding importance in normal aging. Here, we identify the Forkhead Box O (FOXO) transcription factor 1, 3, and 4 isoforms as a guardian of neuronal integrity by inhibiting age-progressive axonal degeneration in mammals. FOXO expression progressively increased in aging human and mouse brains. The nervous system-specific deletion of Foxo transcription factors in mice accelerates aging-related axonal tract degeneration, which is followed by motor dysfunction. This accelerated neurodegeneration is accompanied by levels of white matter astrogliosis and microgliosis in middle-aged Foxo knockout mice that are typically only observed in very old wild-type mice and other aged mammals, including humans. Mechanistically, axonal degeneration in nerve-specific Foxo knockout mice is associated with elevated mTORC1 activity and accompanying proteotoxic stress due to decreased Sestrin3 expression. Inhibition of mTORC1 by rapamycin treatment mimics FOXO action and prevented axonal degeneration in Foxo knockout mice with accelerated nervous system aging. Defining this central role for FOXO in neuroprotection during mammalian aging offers an invaluable window into the aging process itself.
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Affiliation(s)
- Inah Hwang
- Department of Pathology and Laboratory Medicine; Weill Cornell Medicine; New York NY USA
| | - Hwanhee Oh
- Department of Pathology and Laboratory Medicine; Weill Cornell Medicine; New York NY USA
| | - Evan Santo
- Department of Pathology and Laboratory Medicine; Weill Cornell Medicine; New York NY USA
| | - Do-Yeon Kim
- Department of Pharmacology; School of Dentistry; Kyungpook National University; Daegu Korea
| | - John W. Chen
- Center for Systems Biology and the Division of Neuroradiology; Department of Radiology; Massachusetts General Hospital; Harvard Medical School; Boston MA USA
| | - Roderick T. Bronson
- Department of Microbiology and Immunobiology; Harvard Medical School; Boston MA USA
| | - Jason W. Locasale
- Department of Pharmacology and Cancer Biology; Duke University School of Medicine; Durham NC USA
| | - Yoonmi Na
- Department of Pathology and Laboratory Medicine; Weill Cornell Medicine; New York NY USA
| | - Jaclyn Lee
- Department of Medical Oncology; Dana Farber Cancer Institute; Boston MA USA
| | - Stewart Reed
- Department of Medical Oncology; Dana Farber Cancer Institute; Boston MA USA
| | - Miklos Toth
- Department of Pharmacology; Weill Cornell Medicine; New York NY USA
| | - Wai H. Yu
- Department of Pathology and Cell Biology; Columbia University; New York NY USA
| | - Florian L. Muller
- Cancer Systems Imaging; The University of Texas MD Anderson Cancer Center; Houston TX USA
| | - Jihye Paik
- Department of Pathology and Laboratory Medicine; Weill Cornell Medicine; New York NY USA
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11
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HMG-box transcription factor 1: a positive regulator of the G1/S transition through the Cyclin-CDK-CDKI molecular network in nasopharyngeal carcinoma. Cell Death Dis 2018; 9:100. [PMID: 29367693 PMCID: PMC5833394 DOI: 10.1038/s41419-017-0175-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 10/30/2017] [Accepted: 11/16/2017] [Indexed: 11/09/2022]
Abstract
HMG-box transcription factor 1 (HBP1) has been reported to be a tumor suppressor in diverse malignant carcinomas. However, our findings provide a conclusion that HBP1 plays a novel role in facilitating nasopharyngeal carcinoma (NPC) growth. The Kaplan-Meier analysis indicates that high expression HBP1 and low miR-29c expression both are negatively correlated with the overall survival rates of NPC patients. HBP1 knockdown inhibits cellular proliferation and growth, and arrested cells in G1 phase rather than affected cell apoptosis via flow cytometry (FCM) analysis. Mechanistically, HBP1 induces the expression of CCND1 and CCND3 levels by binding to their promoters, and binds to CDK4, CDK6 and p16INK4A promoters while not affects their expression levels. CCND1 and CCND3 promote CCND1-CDK4, CCND3-CDK6, and CDK2-CCNE1 complex formation, thus, E2F-1 and DP-1 are activated to accelerate the G1/S transition in the cell cycle. MiR-29c is down-regulated and correlated with NPC tumorigenesis and progression. Luciferase assays confirms that miR-29c binds to the 3' untranslated region (3'-UTR) of HBP1. Introduction of pre-miR-29c decreased HBP1 mRNA and protein levels. Therefore, the high endogenous HBP1 expression might be attributed to the low levels of endogenous miR-29c in NPC. In addition, HBP1 knockdown and miR-29c agomir administration both decrease xenograft growth in nude mice in vivo. It is firstly reported that HBP1 knockdown inhibited the proliferation and metastasis of NPC, which indicates that HBP1 functions as a non-tumor suppressor gene in NPC. This study provides a novel potential target for the prevention of and therapies for NPC.
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Chan CY, Huang SY, Sheu JJC, Roth MM, Chou IT, Lien CH, Lee MF, Huang CY. Transcription factor HBP1 is a direct anti-cancer target of transcription factor FOXO1 in invasive oral cancer. Oncotarget 2017; 8:14537-14548. [PMID: 28099936 PMCID: PMC5362424 DOI: 10.18632/oncotarget.14653] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/07/2017] [Indexed: 12/23/2022] Open
Abstract
Either FOXO1 or HBP1 transcription factor is a downstream effector of the PI3K/Akt pathway and associated with tumorigenesis. However, the relationship between FOXO1 and HBP1 in oral cancer remains unclear. Analysis of 30 oral tumor specimens revealed that mean mRNA levels of both FOXO1 and HBP1 in non-invasive and invasive oral tumors were found to be significantly lower than that of the control tissues, and the status of low FOXO1 and HBP1 (< 0.3 fold of the control) was associated with invasiveness of oral tumors. To investigate if HBP1 is a direct transcription target of FOXO1, we searched potential FOXO1 binding sites in the HBP1 promoter using the MAPPER Search Engine, and two putative FOXO1 binding sites located in the HBP1 promoter –132 to –125 bp and –343 to –336 bp were predicted. These binding sites were then confirmed by both reporter gene assays and the in cellulo ChIP assay. In addition, Akt activity manipulated by PI3K inhibitor LY294002 or Akt mutants was shown to negatively affect FOXO1-mediated HBP1 promoter activation and gene expression. Last, the biological significance of the FOXO1-HBP1 axis in oral cancer malignancy was evaluated in cell growth, colony formation, and invasiveness. The results indicated that HBP1 knockdown potently promoted malignant phenotypes of oral cancer and the suppressive effect of FOXO1 on cell growth, colony formation, and invasion was alleviated upon HBP1 knockdown in invasive oral cancer cells. Taken together, our data provide evidence for HBP1 as a direct downstream target of FOXO1 in oral cancer malignancy.
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Affiliation(s)
- Chien-Yi Chan
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Shih-Yi Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
| | - Jim Jinn-Chyuan Sheu
- Institute of Biomedical Sciences, National Sun Yatsen University, Kaohsiung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | | | - I-Tai Chou
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Chia-Hsien Lien
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Ming-Fen Lee
- Department of Nutrition and Health Sciences, Chang Jung Christian University, Tainan, Taiwan
| | - Chun-Yin Huang
- Department of Nutrition, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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13
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Liu X, Takano C, Shimizu T, Yokobe S, Abe-Kanoh N, Zhu B, Nakamura T, Munemasa S, Murata Y, Nakamura Y. Inhibition of phosphatidylinositide 3-kinase ameliorates antiproliferation by benzyl isothiocyanate in human colon cancer cells. Biochem Biophys Res Commun 2017; 491:209-216. [PMID: 28712871 DOI: 10.1016/j.bbrc.2017.07.078] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 07/13/2017] [Indexed: 11/29/2022]
Abstract
In the present study, we clarified the role of phosphatidylinositide 3-kinase (PI3K) in antiproliferation induced by benzyl isothiocyanate (BITC) in human colorectal cancer cells. BITC simultaneously activated the PI3K/Akt/forkhead box O (FoxO) pathway, whereas it significantly inhibited the proliferation in human colorectal cancer cells. Inhibitory experiments using a PI3K selective inhibitor, LY294002 or NVP-BEZ235, significantly enhanced the BITC-induced antiproliferation and apoptotic cell population with the attenuation of the BITC-induced activation of the PI3K/Akt/FoxO survival pathway. Furthermore, BITC enhanced the insulin-activated PI3K/Akt/FoxO pathway, possibly through its inhibition of the protein tyrosine phosphatase 1B enzymatic activity. Taken together, these results suggested that the PI3K/Akt/FoxO pathway negatively regulates the BITC-induced antiproliferation in human colorectal cancer cells.
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Affiliation(s)
- Xiaoyang Liu
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan; School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Chiaki Takano
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Tomomi Shimizu
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Shintaro Yokobe
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Naomi Abe-Kanoh
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan; Department of Food Science, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Beiwei Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Toshiyuki Nakamura
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Shintaro Munemasa
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Yoshiyuki Murata
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Yoshimasa Nakamura
- Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan.
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14
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Coomans de Brachène A, Dif N, de Rocca Serra A, Bonnineau C, Velghe AI, Larondelle Y, Tyteca D, Demoulin JB. PDGF-induced fibroblast growth requires monounsaturated fatty acid production by stearoyl-CoA desaturase. FEBS Open Bio 2017; 7:414-423. [PMID: 28286737 PMCID: PMC5337901 DOI: 10.1002/2211-5463.12194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/29/2016] [Accepted: 12/29/2016] [Indexed: 11/11/2022] Open
Abstract
Stearoyl-coenzyme A desaturase (SCD) catalyzes the Δ9-cis desaturation of saturated fatty acids (SFA) to generate monounsaturated fatty acids (MUFA). This enzyme is highly up-regulated by platelet-derived growth factor (PDGF) in human fibroblasts. Accordingly, the analysis of cellular fatty acids by gas chromatography showed that PDGF significantly increased the proportion of MUFA, particularly palmitoleate, in cellular lipids. To further analyze the role of SCD in fibroblasts, we used small hairpin RNA targeting SCD (shSCD), which decreased the MUFA content. SCD down-regulation blunted the proliferation of fibroblasts in response to PDGF. This was confirmed using a pharmacological inhibitor of SCD. In addition, proliferation was blocked by palmitate and stearate (two SCD substrates) but not by palmitoleate and oleate (two SCD products). In the presence of an equal amount of oleate, palmitate had no effect on cell proliferation. SCD inhibition or down-regulation did not decrease PDGF receptor activity or signaling. However, by measuring plasma membrane lipid lateral diffusion by fluorescence recovery after photobleaching, we showed that the modulation of the MUFA/SFA ratio by PDGF and SCD inhibitor was related to modifications of membrane fluidity. Altogether, our data suggest that SCD is required for the response of normal fibroblasts to growth factors.
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Affiliation(s)
| | - Nicolas Dif
- de Duve Institute MEXP unit Université catholique de Louvain Brussels Belgium
| | | | - Chloé Bonnineau
- Institute of Life Sciences Université catholique de Louvain Louvain-La-Neuve Belgium
| | - Amélie I Velghe
- de Duve Institute MEXP unit Université catholique de Louvain Brussels Belgium
| | - Yvan Larondelle
- Institute of Life Sciences Université catholique de Louvain Louvain-La-Neuve Belgium
| | - Donatienne Tyteca
- de Duve Institute CELL unit Université catholique de Louvain Brussels Belgium
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15
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Norambuena-Soto I, Núñez-Soto C, Sanhueza-Olivares F, Cancino-Arenas N, Mondaca-Ruff D, Vivar R, Díaz-Araya G, Mellado R, Chiong M. Transforming growth factor-beta and Forkhead box O transcription factors as cardiac fibroblast regulators. Biosci Trends 2017; 11:154-162. [DOI: 10.5582/bst.2017.01017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | | | | | - Raul Vivar
- Facultad de Medicina; Universidad de Chile
| | | | | | - Mario Chiong
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile
- Centro de Estudios Moleculares de la Célula, Universidad de Chile
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16
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Epigenetic silencing of miR-19a-3p by cold atmospheric plasma contributes to proliferation inhibition of the MCF-7 breast cancer cell. Sci Rep 2016; 6:30005. [PMID: 27445062 PMCID: PMC4956745 DOI: 10.1038/srep30005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/28/2016] [Indexed: 12/29/2022] Open
Abstract
Cold atmospheric plasma (CAP) has been proposed as a useful cancer treatment option after showing higher induction of cell death in cancer cells than in normal cells. Although a few studies have contributed to elucidating the molecular mechanism by which CAP differentially inhibits cancer cell proliferation, no results are yet to be reported related to microRNA (miR). In this study, miR-19a-3p (miR-19a) was identified as a mediator of the cell proliferation-inhibitory effect of CAP in the MCF-7 breast cancer cell. CAP treatment of MCF-7 induced hypermethylation at the promoter CpG sites and downregulation of miR-19a, which was known as an oncomiR. The overexpression of miR-19a in MCF-7 increased cell proliferation, and CAP deteriorated the effect. The target genes of miR-19a, such as ABCA1 and PTEN, that had been suppressed by miR recovered their expression through CAP treatment. In addition, an inhibitor of reactive oxygen species that is produced by CAP suppressed the effect of CAP on cell proliferation. Taken together, the present study, to the best of authors’ knowledge, is the first to identify the involvement of a miR, which is dysregulated by the CAP and results in the anti-proliferation effect of CAP on cancer cells.
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Liu R, Wang M, Su L, Li X, Zhao S, Yu M. The Expression Pattern of MicroRNAs and the Associated Pathways Involved in the Development of Porcine Placental Folds That Contribute to the Expansion of the Exchange Surface Area. Biol Reprod 2015; 93:62. [PMID: 26157073 DOI: 10.1095/biolreprod.114.126540] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 07/06/2015] [Indexed: 01/12/2023] Open
Abstract
The development of the microscopically folded structure of the diffuse epitheliochorial placenta in pigs is important because it expands the surface area for maternal-fetal exchange, resulting in an increase in placental efficiency. To better understand the regulatory mechanisms involved in this process, we characterized miRNA expression profiles in porcine placentas during the initiation and establishment of placental fold development. A total of 42 miRNAs were found to be differentially expressed, and their putative target genes were predicted using four target prediction programs. Following a comparative analysis with published gene expression pattern data obtained from porcine placentas in the corresponding stages of placental fold development, only those genes that were negatively correlated with miRNA expression were retained for further function and pathway enrichment analysis. The results showed that the up-regulated miRNAs were associated mainly with extracellular matrix remodeling and tissue morphogenesis, while the down-regulated miRNAs were related to cell proliferation and signal transduction. Furthermore, we provide evidence that miR-130b may facilitate the expression of HPSE, which has been reported to be a regulator of the folding of the pig placenta, by suppressing the expression of PPARG. In addition, we also reveal that the miRNA-target pairs expressed in the pig placenta may trigger the degradation of the stromal matrix and basement membrane (miR-29a-COL1A2, COL3A1, and LAMC1) and regulate trophoblast epithelial cell adherens junctions (the miR-200 family and miR-205-ZEB2-CDH1) and proliferation (miR-17-92 cluster-HBP1 and ULK1). Taken together, these results indicate that miRNAs and related pathways may have potential roles in porcine placental fold development.
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Affiliation(s)
- Ruize Liu
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Min Wang
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Lijie Su
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China College of Public Health, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaoping Li
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Shuhong Zhao
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Mei Yu
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
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