1
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Wang X, Rao J, Chen X, Wang Z, Zhang Y. Identification of Shared Signature Genes and Immune Microenvironment Subtypes for Heart Failure and Chronic Kidney Disease Based on Machine Learning. J Inflamm Res 2024; 17:1873-1895. [PMID: 38533476 PMCID: PMC10964169 DOI: 10.2147/jir.s450736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/19/2024] [Indexed: 03/28/2024] Open
Abstract
Background A complex interrelationship exists between Heart Failure (HF) and chronic kidney disease (CKD). This study aims to clarify the molecular mechanisms of the organ-to-organ interplay between heart failure and CKD, as well as to identify extremely sensitive and specific biomarkers. Methods Differentially expressed tandem genes were identified from HF and CKD microarray datasets and enrichment analyses of tandem perturbation genes were performed to determine their biological functions. Machine learning algorithms are utilized to identify diagnostic biomarkers and evaluate the model by ROC curves. RT-PCR was employed to validate the accuracy of diagnostic biomarkers. Molecular subtypes were identified based on tandem gene expression profiling, and immune cell infiltration of different subtypes was examined. Finally, the ssGSEA score was used to build the ImmuneScore model and to assess the differentiation between subtypes using ROC curves. Results Thirty-three crosstalk genes were associated with inflammatory, immune and metabolism-related signaling pathways. The machine-learning algorithm identified 5 hub genes (PHLDA1, ATP1A1, IFIT2, HLTF, and MPP3) as the optimal shared diagnostic biomarkers. The expression levels of tandem genes were negatively correlated with left ventricular ejection fraction and glomerular filtration rate. The CIBERSORT results indicated the presence of severe immune dysregulation in patients with HF and CKD, which was further validated at the single-cell level. Consensus clustering classified HF and CKD patients into immune and metabolic subtypes. Twelve immune genes associated with immune subtypes were screened based on WGCNA analysis, and an ImmuneScore model was constructed for high and low risk. The model accurately predicted different molecular subtypes of HF or CKD. Conclusion Five crosstalk genes may serve as potential biomarkers for diagnosing HF and CKD and are involved in disease progression. Metabolite disorders causing activation of a large number of immune cells explain the common pathogenesis of HF and CKD.
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Affiliation(s)
- Xuefu Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
| | - Jin Rao
- Department of Cardiothoracic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Xiangyu Chen
- Department of Cardiothoracic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Zhinong Wang
- Department of Cardiothoracic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Yufeng Zhang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
- Department of Cardiothoracic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, People’s Republic of China
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2
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Song X, Zhou L, Yang W, Li X, Ma J, Qi K, Liang R, Li M, Xie L, Su T, Huang D, Liang B. PHLDA1 is a P53 target gene involved in P53-mediated cell apoptosis. Mol Cell Biochem 2024; 479:653-664. [PMID: 37155089 DOI: 10.1007/s11010-023-04752-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 04/26/2023] [Indexed: 05/10/2023]
Abstract
Pleckstrin homeolike domain, family A, member 1 (PHLDA1) is a multifunctional protein that plays diverse roles in A variety of biological processes, including cell death, and hence its altered expression has been found in different types of cancer. Although studies have shown a regulatory relationship between p53 and PHLDA1, the molecular mechanism is still unclear. Especially, the role of PHLDA1 in the process of apoptosis is still controversial. In this study, we found that the expression of PHLDA1 in human cervical cancer cell lines was correlated with the up-expression of p53 after treatment with apoptosis-inducing factors. Subsequently, the binding site and the binding effect of p53 on the promoter region of PHLDA1 were verified by our bioinformatics data analysis and luciferase reporter assay. Indeed, we used CRISPR-Cas9 to knockout the p53 gene in HeLa cells and further confirmed that p53 can bind to the promoter region of PHLDA1 gene, and then directly regulate the expression of PHLDA1 by recruiting P300 and CBP to change the acetylation and methylation levels in the promoter region. Finally, a series of gain-of-function experiments further confirmed that p53 re-expression in HeLap53-/- cell can up-regulate the reduction of PHLDA1 caused by p53 knockout, and affect cell apoptosis and proliferation. Our study is the first to explore the regulatory mechanism of p53 on PHLDA1 by using the p53 gene knockout cell model, which further proves that PHLDA1 is a target-gene in p53-mediated apoptosis, and reveals the important role of PHLDA1 in cell fate determination.
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Affiliation(s)
- Xuhong Song
- Center for Cancer Research, Shantou University Medical College, Shantou, Guangdong, China
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Lulu Zhou
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Wenrui Yang
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Xinyan Li
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Jiazi Ma
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Kun Qi
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Rui Liang
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Meijing Li
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Lingzhu Xie
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Tin Su
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China
| | - Dongyang Huang
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China.
| | - Bin Liang
- Section of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, China.
- Biomedical Research Center, Shantou University Medical College, Shantou, Guangdong, China.
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3
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Yousof TR, Bouchard CC, Alb M, Lynn EG, Lhoták S, Jiang H, MacDonald M, Li H, Byun JH, Makda Y, Athanasopoulos M, Maclean KN, Cherrington NJ, Naqvi A, Igdoura SA, Krepinsky JC, Steinberg GR, Austin RC. Restoration of the ER stress response protein TDAG51 in hepatocytes mitigates NAFLD in mice. J Biol Chem 2024; 300:105655. [PMID: 38237682 PMCID: PMC10875272 DOI: 10.1016/j.jbc.2024.105655] [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: 10/24/2023] [Revised: 12/24/2023] [Accepted: 12/27/2023] [Indexed: 02/16/2024] Open
Abstract
Endoplasmic reticulum stress is associated with insulin resistance and the development of nonalcoholic fatty liver disease. Deficiency of the endoplasmic reticulum stress response T-cell death-associated gene 51 (TDAG51) (TDAG51-/-) in mice promotes the development of high-fat diet (HFD)-induced obesity, fatty liver, and hepatic insulin resistance. However, whether this effect is due specifically to hepatic TDAG51 deficiency is unknown. Here, we report that hepatic TDAG51 protein levels are consistently reduced in multiple mouse models of liver steatosis and injury as well as in liver biopsies from patients with liver disease compared to normal controls. Delivery of a liver-specific adeno-associated virus (AAV) increased hepatic expression of a TDAG51-GFP fusion protein in WT, TDAG51-/-, and leptin-deficient (ob/ob) mice. Restoration of hepatic TDAG51 protein was sufficient to increase insulin sensitivity while reducing body weight and fatty liver in HFD fed TDAG51-/- mice and in ob/ob mice. TDAG51-/- mice expressing ectopic TDAG51 display improved Akt (Ser473) phosphorylation, post-insulin stimulation. HFD-fed TDAG51-/- mice treated with AAV-TDAG51-GFP displayed reduced lipogenic gene expression, increased beta-oxidation and lowered hepatic and serum triglycerides, findings consistent with reduced liver weight. Further, AAV-TDAG51-GFP-treated TDAG51-/- mice exhibited reduced hepatic precursor and cleaved sterol regulatory-element binding proteins (SREBP-1 and SREBP-2). In vitro studies confirmed the lipid-lowering effect of TDAG51 overexpression in oleic acid-treated Huh7 cells. These studies suggest that maintaining hepatic TDAG51 protein levels represents a viable therapeutic approach for the treatment of obesity and insulin resistance associated with nonalcoholic fatty liver disease.
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Affiliation(s)
- Tamana R Yousof
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Celeste C Bouchard
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Mihnea Alb
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Edward G Lynn
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Sárka Lhoták
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Hua Jiang
- Department of Pediatrics, School of Medicine, University of Colorado Health Sciences Center, Aurora, Colorado, USA
| | - Melissa MacDonald
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Hui Li
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona, USA
| | - Jae H Byun
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | - Yumna Makda
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada
| | | | - Kenneth N Maclean
- Department of Pediatrics, School of Medicine, University of Colorado Health Sciences Center, Aurora, Colorado, USA
| | - Nathan J Cherrington
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona, USA
| | - Asghar Naqvi
- Department of Pathology and Molecular Medicine, St. Joseph's Healthcare Hamilton, McMaster University, Hamilton, Ontario, Canada
| | - Suleiman A Igdoura
- Department of Biology, McMaster University, Hamilton, Ontario, Canada; Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Joan C Krepinsky
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Gregory R Steinberg
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada; Division of Endocrinology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Richard C Austin
- Division of Nephrology, Department of Medicine, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, McMaster University, Hamilton, Ontario, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada.
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4
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Tvingsholm SA, Frej MS, Rafa VM, Hansen UK, Ormhøj M, Tyron A, Jensen AWP, Kadivar M, Bentzen AK, Munk KK, Aasbjerg GN, Ternander JSH, Heeke C, Tamhane T, Schmess C, Funt SA, Kjeldsen JW, Kverneland AH, Met Ö, Draghi A, Jakobsen SN, Donia M, Marie Svane I, Hadrup SR. TCR-engaging scaffolds selectively expand antigen-specific T-cells with a favorable phenotype for adoptive cell therapy. J Immunother Cancer 2023; 11:e006847. [PMID: 37586765 PMCID: PMC10432666 DOI: 10.1136/jitc-2023-006847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2023] [Indexed: 08/18/2023] Open
Abstract
BACKGROUND Adoptive cell therapy (ACT) has shown promising results for the treatment of cancer and viral infections. Successful ACT relies on ex vivo expansion of large numbers of desired T-cells with strong cytotoxic capacity and in vivo persistence, which constitutes the greatest challenge to current ACT strategies. Here, in this study, we present a novel technology for ex vivo expansion of antigen-specific T-cells; artificial antigen-presenting scaffolds (Ag-scaffolds) consisting of a dextran-polysaccharide backbone, decorated with combinations of peptide-Major Histocompatibility Complex (pMHC), cytokines and co-stimulatory molecules, enabling coordinated stimulation of antigen-specific T-cells. METHODS The capacity of Ag-scaffolds to expand antigen-specific T-cells was explored in ex vivo cultures with peripheral blood mononuclear cells from healthy donors and patients with metastatic melanoma. The resulting T-cell products were assessed for phenotypic and functional characteristics. RESULTS We identified an optimal Ag-scaffold for expansion of T-cells for ACT, carrying pMHC and interleukin-2 (IL-2) and IL-21, with which we efficiently expanded both virus-specific and tumor-specific CD8+ T cells from peripheral blood of healthy donors and patients, respectively. The resulting T-cell products were characterized by a high frequency of antigen-specific cells with high self-renewal capacity, low exhaustion, a multifunctional cytokine profile upon antigen-challenge and superior tumor killing capacity. This demonstrates that the coordinated stimuli provided by an optimized stoichiometry of TCR engaging (pMHC) and stimulatory (cytokine) moieties is essential to obtain desired T-cell characteristics. To generate an 'off-the-shelf' multitargeting Ag-scaffold product of relevance to patients with metastatic melanoma, we identified the 30 most frequently recognized shared HLA-A0201-restricted melanoma epitopes in a cohort of 87 patients. By combining these in an Ag-scaffold product, we were able to expand tumor-specific T-cells from 60-70% of patients with melanoma, yielding a multitargeted T-cell product with up to 25% specific and phenotypically and functionally improved T cells. CONCLUSIONS Taken together, the Ag-scaffold represents a promising new technology for selective expansion of antigen-specific CD8+ T cells directly from blood, yielding a highly specific and functionally enhanced T-cell product for ACT.
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Affiliation(s)
| | | | - Vibeke Mindahl Rafa
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | | | - Maria Ormhøj
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Alexander Tyron
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Agnete W P Jensen
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Mohammad Kadivar
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Amalie Kai Bentzen
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Kamilla K Munk
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Gitte N Aasbjerg
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | | | - Christina Heeke
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Tripti Tamhane
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Christian Schmess
- NMI Natural and Medical Science Institute, University of Tübingen, Tubingen, Germany
| | - Samuel A Funt
- Deptartment of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Julie Westerlin Kjeldsen
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Anders Handrup Kverneland
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Özcan Met
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Copenhagen, Denmark
| | - Arianna Draghi
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Søren Nyboe Jakobsen
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Marco Donia
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Inge Marie Svane
- National Center for Cancer Immune Therapy (CCIT-DK), Department of Oncology, Herlev Hospital, Herlev, Denmark
| | - Sine Reker Hadrup
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
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5
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Park E, Jeon H, Lee N, Yu J, Park H, Satoh T, Akira S, Furuyama T, Lee C, Choi J, Rho J. TDAG51 promotes transcription factor FoxO1 activity during LPS-induced inflammatory responses. EMBO J 2023; 42:e111867. [PMID: 37203866 PMCID: PMC10308371 DOI: 10.15252/embj.2022111867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023] Open
Abstract
Tight regulation of Toll-like receptor (TLR)-mediated inflammatory responses is important for innate immunity. Here, we show that T-cell death-associated gene 51 (TDAG51/PHLDA1) is a novel regulator of the transcription factor FoxO1, regulating inflammatory mediator production in the lipopolysaccharide (LPS)-induced inflammatory response. TDAG51 induction by LPS stimulation was mediated by the TLR2/4 signaling pathway in bone marrow-derived macrophages (BMMs). LPS-induced inflammatory mediator production was significantly decreased in TDAG51-deficient BMMs. In TDAG51-deficient mice, LPS- or pathogenic Escherichia coli infection-induced lethal shock was reduced by decreasing serum proinflammatory cytokine levels. The recruitment of 14-3-3ζ to FoxO1 was competitively inhibited by the TDAG51-FoxO1 interaction, leading to blockade of FoxO1 cytoplasmic translocation and thereby strengthening FoxO1 nuclear accumulation. TDAG51/FoxO1 double-deficient BMMs showed significantly reduced inflammatory mediator production compared with TDAG51- or FoxO1-deficient BMMs. TDAG51/FoxO1 double deficiency protected mice against LPS- or pathogenic E. coli infection-induced lethal shock by weakening the systemic inflammatory response. Thus, these results indicate that TDAG51 acts as a regulator of the transcription factor FoxO1, leading to strengthened FoxO1 activity in the LPS-induced inflammatory response.
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Affiliation(s)
- Eui‐Soon Park
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
| | - Hyoeun Jeon
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
| | - Nari Lee
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
| | - Jiyeon Yu
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
| | - Hye‐Won Park
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
| | - Takashi Satoh
- Department of Immune Regulation, Graduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Shizuo Akira
- Laboratory of Host Defense, WPI Immunology Frontier Research CenterOsaka UniversityOsakaJapan
| | - Tatsuo Furuyama
- Department of Clinical ExaminationKagawa Prefectural University of Health SciencesKagawaJapan
| | - Chul‐Ho Lee
- Laboratory Animal CenterKorea Research Institute of Bioscience & Biotechnology (KRIBB)DaejeonKorea
| | - Jong‐Soon Choi
- Division of Life ScienceKorea Basic Science Institute (KBSI)DaejeonKorea
| | - Jaerang Rho
- Department of Microbiology and Molecular BiologyChungnam National UniversityDaejeonKorea
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6
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PHLDA1 knockdown alleviates mitochondrial dysfunction and endoplasmic reticulum stress-induced neuronal apoptosis via activating PPARγ in cerebral ischemia-reperfusion injury. Brain Res Bull 2023; 194:23-34. [PMID: 36681251 DOI: 10.1016/j.brainresbull.2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/19/2023]
Abstract
Mitochondrial dysfunction and endoplasmic reticulum (ER) stress occur in ischemic stroke. The disruption of these two organelles can directly lead to cell death through various signaling pathways. Thus, investigation of the associated molecular mechanisms in cerebral ischemia is a prerequisite for stroke treatment. Pleckstrin homology-like domain family A member 1 (PHLDA1) is a multifunctional protein that can modulate mitochondrial function and ER stress in cardiomyocyte and cancer cells. This work studied the role of PHLDA1 in cerebral ischemic/reperfusion (I/R) injury and explored the underlying mechanisms associated with mitochondrial functions and ER stress. Middle cerebral artery occlusion/reperfusion (MCAO/R)-treated mice and oxygen-glucose deprivation/reoxygenation (OGD/R)-stimulated neurons were used as I/R models in vivo and in vitro, respectively. PHLDA1 was upregulated in ischemic penumbra of MCAO/R-induced mice and OGD/R-exposed neurons. In vitro, PHLDA1 knockdown protected neurons from OGD/R-induced apoptosis. In vivo, PHLDA1 silencing facilitated functional recovery and reduced cerebral infarct volume. Mechanistically, PHLDA1 knockdown promoted PPARγ nuclear translocation, which may mediate the effects on reversion of mitochondrial functions and alleviation of ER stress. In summary, PHLDA1 knockdown alleviates neuronal ischemic injuries in mice. PPARγ activation and mitochondrial dysfunction and endoplasmic reticulum stress attenuation are involved in the underlying mechanisms.
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7
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Hudock KM, Collins MS, Imbrogno MA, Kramer EL, Brewington JJ, Ziady A, Zhang N, Snowball J, Xu Y, Carey BC, Horio Y, O’Grady SM, Kopras EJ, Meeker J, Morgan H, Ostmann AJ, Skala E, Siefert ME, Na CL, Davidson CR, Gollomp K, Mangalmurti N, Trapnell BC, Clancy JP. Alpha-1 antitrypsin limits neutrophil extracellular trap disruption of airway epithelial barrier function. Front Immunol 2023; 13:1023553. [PMID: 36703990 PMCID: PMC9872031 DOI: 10.3389/fimmu.2022.1023553] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/30/2022] [Indexed: 01/12/2023] Open
Abstract
Neutrophil extracellular traps contribute to lung injury in cystic fibrosis and asthma, but the mechanisms are poorly understood. We sought to understand the impact of human NETs on barrier function in primary human bronchial epithelial and a human airway epithelial cell line. We demonstrate that NETs disrupt airway epithelial barrier function by decreasing transepithelial electrical resistance and increasing paracellular flux, partially by NET-induced airway cell apoptosis. NETs selectively impact the expression of tight junction genes claudins 4, 8 and 11. Bronchial epithelia exposed to NETs demonstrate visible gaps in E-cadherin staining, a decrease in full-length E-cadherin protein and the appearance of cleaved E-cadherin peptides. Pretreatment of NETs with alpha-1 antitrypsin (A1AT) inhibits NET serine protease activity, limits E-cadherin cleavage, decreases bronchial cell apoptosis and preserves epithelial integrity. In conclusion, NETs disrupt human airway epithelial barrier function through bronchial cell death and degradation of E-cadherin, which are limited by exogenous A1AT.
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Affiliation(s)
- K. M. Hudock
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,*Correspondence: K. M. Hudock,
| | - M. S. Collins
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - M. A. Imbrogno
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - E. L. Kramer
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - J. J. Brewington
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - A. Ziady
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - N. Zhang
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - J. Snowball
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Y. Xu
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Divisions of Biomedical Informatics, Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - B. C. Carey
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Translational Pulmonary Science Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Y. Horio
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States,Department of Respiratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto-shi, Kumamoto, Japan
| | - S. M. O’Grady
- Departments of Animal Science, University of Minnesota, St. Paul, MN, United States,Department of Integrative Biology and Physiology, University of Minnesota, St. Paul, MN, United States
| | - E. J. Kopras
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - J. Meeker
- Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - H. Morgan
- Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - A. J. Ostmann
- Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - E. Skala
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - M. E. Siefert
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - C. L. Na
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - C. R. Davidson
- Division of Pediatric Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - K. Gollomp
- Division of Hematology, Children’s Hospital of Philadelphia, Philadelphia, PA, United States,Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - N. Mangalmurti
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States,Pennsylvania Lung Biology Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - B. C. Trapnell
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States,Translational Pulmonary Science Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - J. P. Clancy
- Cystic Fibrosis Foundation, Bethesda, MD, United States
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8
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Jeon H, Amarasekara DS, Lee N, Park HW, Yu J, Rho J. TDAG51 deficiency attenuates dextran sulfate sodium-induced colitis in mice. Sci Rep 2022; 12:20619. [PMID: 36450854 PMCID: PMC9712416 DOI: 10.1038/s41598-022-24873-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD), including ulcerative colitis and Crohn's disease, is a group of chronic inflammatory diseases of the gastrointestinal tract. Although the multifactorial etiology of IBD pathogenesis is relatively well documented, the regulatory factors that confer a risk of IBD pathogenesis remain less explored. In this study, we report that T-cell death-associated gene 51 (TDAG51/PHLDA1) is a novel regulator of the development of dextran sulfate sodium (DSS)-induced colitis in mice. TDAG51 expression was elevated in the colon tissues of DSS-induced experimental colitis mice. TDAG51 deficiency protected mice against acute DSS-induced lethality and body weight changes and disease severity. DSS-induced structural damage and mucus secretion in colon tissues were significantly reduced in TDAG51-deficient mice compared with wild-type mice. We observed similar results in a DSS-induced chronic colitis mouse model. Finally, we showed that the production of inflammatory mediators, including proinflammatory enzymes, molecules and cytokines, was decreased in DSS-treated TDAG51-deficient mice compared with DSS-treated wild-type mice. Thus, we demonstrated that TDAG51 deficiency plays a protective role against DSS-induced colitis by decreasing the production of inflammatory mediators in mice. These findings suggest that TDAG51 is a novel regulator of the development of DSS-induced colitis and is a potential therapeutic target for IBD.
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Affiliation(s)
- Hyoeun Jeon
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
| | - Dulshara Sachini Amarasekara
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
| | - Nari Lee
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
| | - Hye-Won Park
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
| | - Jiyeon Yu
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea.
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9
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Wang WC, Lai YC. DUSP5 and PHLDA1 mutations in mature cystic teratomas of the ovary identified on whole-exome sequencing may explain teratoma characteristics. Hum Genomics 2022; 16:50. [PMID: 36289533 PMCID: PMC9609193 DOI: 10.1186/s40246-022-00424-w] [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: 09/02/2022] [Accepted: 10/19/2022] [Indexed: 11/21/2022] Open
Abstract
Background Mature cystic teratomas of the ovary are the most common type of germ cell tumor, comprising 33% of ovarian tumors. Studying these tumors may result in a better understanding of their stepwise developmental processes and molecular bases and provide useful information for the development of tissue-engineering technologies. Methods In the present study, 9 mature cystic teratomas of the ovary were analyzed by whole-exome sequencing and the results were compared with the Catalogue of Somatic Mutations in Cancer and dbSNP databases. Results Mutations were validated in 15 genes with alterations in all 9 (100%) samples and changes in protein coding. The top 10 mutated genes were FLG, MUC17, MUC5B, RP1L1, NBPF1, GOLGA6L2, SLC29A3, SGK223, PTGFRN, and FAM186A. Moreover, 7 variants in exons with changes in protein coding are likely of importance in the development of mature cystic teratomas of the ovary, namely PTGFRN, DUSP5, MPP2, PHLDA1, PRR21, GOLGA6L2, and KRTAP4-2. Conclusions These genetic alterations may play an important etiological role in teratoma formation. Moreover, novel mutations in DUSP5 and PHLDA1 genes found on whole-exome sequencing may help to explain the characteristics of teratomas. Supplementary Information The online version contains supplementary material available at 10.1186/s40246-022-00424-w.
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Affiliation(s)
- Wen-Chung Wang
- grid.414969.70000 0004 0642 8534Department of Obstetrics and Gynecology, Jen-Ai Hospital, Taichung, 412 Taiwan
| | - Yen-Chein Lai
- grid.411641.70000 0004 0532 2041Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, No. 110, Sec. 1, Chien Kuo N. Road, Taichung, 402 Taiwan ,grid.411645.30000 0004 0638 9256Clinical Laboratory, Chung Shan Medical University Hospital, Taichung, Taiwan
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10
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Duan Y, Du Y, Gu Z, Zheng X, Wang C. Prognostic Value, Immune Signature, and Molecular Mechanisms of the PHLDA Family in Pancreatic Adenocarcinoma. Int J Mol Sci 2022; 23:ijms231810316. [PMID: 36142223 PMCID: PMC9499624 DOI: 10.3390/ijms231810316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/28/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Increasing evidence supports the belief that the pleckstrin homology domain family A (PHLDA) family is associated with the development of a variety of cancers. However, the function of the PHLDA family members in PAAD is still unclear. Methods: Comprehensive bioinformatic analyses using R (version 3.6.3), Cytoscape (version 3.9.1), UALCAN, etc., were performed to study the clinicopathological characteristics, prognostic value, immune features, and functional mechanisms of the PHLDA family members in PAAD. Results: The PHLDA family members showed significantly elevated expression in PAAD compared with paracancerous or normal tissues. Their high expression or amplification were significantly correlated with worse clinicopathological characteristics and prognosis in PAAD patients. In addition, the role of the PHLDA family members in the immune regulation is diverse and complex. Mechanistically, TP53 mutations were significantly associated with the promoter methylation and expression levels of the PHLDA family members, which were activated in multiple oncogenic pathways, including the EMT, RAS/MAPK, and TSC/mTOR pathways. Moreover, we found that their expression levels were significantly correlated with the sensitivity of multiple traditional chemotherapeutic drugs and novel targeted MEK1/2 inhibitors. Conclusion: The PHLDA family members play an oncogenic role in the development of PAAD and might serve as new biomarkers or therapeutic targets.
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Affiliation(s)
- Yunjie Duan
- State Key Lab of Molecular Oncology and Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China
| | - Yongxing Du
- State Key Lab of Molecular Oncology and Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China
| | - Zongting Gu
- Department of Hepatobiliary and Pancreatic Surgery and Minimally Invasive Surgery, Zhejiang Provincial People’s Hospital, Hangzhou Medical College, Hangzhou 310000, China
| | - Xiaohao Zheng
- State Key Lab of Molecular Oncology and Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China
| | - Chengfeng Wang
- State Key Lab of Molecular Oncology and Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China
- Correspondence: ; Tel.: +86-10-87787120; Fax: +86-10-87787123
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11
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Song G, Jin F. RhoGDI1 interacts with PHLDA2, suppresses the proliferation, migration, and invasion of trophoblast cells, and participates in the pathogenesis of preeclampsia. Hum Cell 2022; 35:1440-1452. [PMID: 35841528 DOI: 10.1007/s13577-022-00746-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/03/2022] [Indexed: 11/28/2022]
Abstract
Preeclampsia (PE) is a pregnancy-associated disease, which is the major cause of mortality on maternity and perinatal infants. It is hypothesized that PE is a consequence of the dysfunction of the trophoblast cells. Pleckstrin homology-like domain, family A, member 2 (PHLDA2) was shown to inhibit the proliferation, migration, and invasion of trophoblast cells in our previous studies. However, the mechanism by which PHLDA2 affects trophoblast cell function has not been clarified. In the current study, co-immunoprecipitation (Co-IP) with mass spectroscopy analysis was used to explore the proteins that interacted with PHLDA2. A total of 291 candidate proteins were found to be associated with PHLDA2. The interaction between PHLDA2 and Rho guanine nucleotide dissociation inhibitor (RhoGDI) 1 was identified by Co-IP and immunofluorescence staining. Western blot analysis indicated that overexpression of PHLDA2 resulted in upregulation of the RhoGDI1 protein levels, which were stabilized in the presence of cycloheximide. Similarly, overexpression of RhoGDI1 promoted PHLDA2 expression and its stability. Furthermore, pull-down and Co-IP results indicated that PHLDA2 repressed the activity of Rho guanosine triphosphate hydrolase family proteins by regulating RhoGDI1 expression. In addition, RhoGDI1 expression was upregulated in the placental tissues of patients with PE. The effects of the suppression of PHLDA2 expression on proliferation, migration, and invasion of trophoblast cells were partly abrogated following knockdown of RhoGDI1. Taken together, the data indicated that RhoGDI1 mediated regulation of PHLDA2 on the biological behavior of trophoblast cells and may participate in the pathophysiology of PE.
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Affiliation(s)
- Guiyu Song
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Shenyang, 110004, Liaoning, China
| | - Feng Jin
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Shenyang, 110004, Liaoning, China.
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12
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Chen X, Zhang Q, Zhang Q. Predicting potential biomarkers and immune infiltration characteristics in heart failure. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2022; 19:8671-8688. [PMID: 35942730 DOI: 10.3934/mbe.2022402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Studies have demonstrated that immune cell activation and their infiltration in the myocardium can have adverse effects on the heart, contributing to the pathogenesis of heart failure (HF). The purpose of this study is used by bioinformatics analysis to determine the potential diagnostic markers of heart failure and establish an applicable model to predict the association between heart failure and immune cell infiltration. METHODS Firstly, gene expression profiles of dilated heart disease GSE3585 and GSE120895 were obtained in Gene Expression Omnibus (GEO) database. This study then selected differentially expressed genes (DEGs) in 54 patients with HF and 13 healthy controls. In this study, biomarkers were identified using Least Absolute Shrinkage and Selector Operation (LASSO) and Support Vector Machine-Recursive Feature Elimination (SVM-RFE). Additionally, we evaluated the prognostic discrimination performance by the receiver operating characteristic (ROC) curve. Cell type Identification by Estimating Relative Subsets of RNA Transcripts (CIBERSORT) was used for analyzing immune cell infiltration in HF tissues. Lastly, immune biomarkers were correlated with each other. RESULT After 24 DEGs were analyzed using a combinatorial model of LASSO regression and SVM-RFE analysis, four key genes were obtained, namely NSG1, NPPB, PHLDA1, and SERPINE2.The area under the curve (AUC) of these four genes were greater than 0.8. Subsequently, using CIBERPORT, we also found that compared with normal people, the proportion of M1 macrophages and activated mast cells in heart failure tissues decreased. In addition, correlation analysis showed that NPPB, PHLDA1 and SERPINE2 were associated with immune cell infiltration. CONCLUSION NSG1, NPPB, PHLDA1 and SERPINE2 were identified as potential biomarkers of heart failure. It reveals the comprehensive role of relevant central genes in immune infiltration, which provides a new research idea for the treatment and early detection in heart failure.
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Affiliation(s)
- Xuesi Chen
- Cardiovascular Department, the Affiliated People's Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Qijun Zhang
- Cardiovascular Department, the Affiliated People's Hospital of Ningbo University, Ningbo, Zhejiang, China
| | - Qin Zhang
- Cardiovascular Department, the Affiliated People's Hospital of Ningbo University, Ningbo, Zhejiang, China
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13
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Fuentes I, Morishita Y, Gonzalez-Salinas S, Champagne FA, Uchida S, Shumyatsky GP. Experience-Regulated Neuronal Signaling in Maternal Behavior. Front Mol Neurosci 2022; 15:844295. [PMID: 35401110 PMCID: PMC8987921 DOI: 10.3389/fnmol.2022.844295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Maternal behavior is shaped and challenged by the changing developmental needs of offspring and a broad range of environmental factors, with evidence indicating that the maternal brain exhibits a high degree of plasticity. This plasticity is displayed within cellular and molecular systems, including both intra- and intercellular signaling processes as well as transcriptional profiles. This experience-associated plasticity may have significant overlap with the mechanisms controlling memory processes, in particular those that are activity-dependent. While a significant body of work has identified various molecules and intracellular processes regulating maternal care, the role of activity- and experience-dependent processes remains unclear. We discuss recent progress in studying activity-dependent changes occurring at the synapse, in the nucleus, and during the transport between these two structures in relation to maternal behavior. Several pre- and postsynaptic molecules as well as transcription factors have been found to be critical in these processes. This role reflects the principal importance of the molecular and cellular mechanisms of memory formation to maternal and other behavioral adaptations.
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Affiliation(s)
- Ileana Fuentes
- Department of Genetics, Rutgers University, Piscataway, NJ, United States
| | | | | | - Frances A. Champagne
- Department of Psychology, University of Texas at Austin, Austin, TX, United States
| | - Shusaku Uchida
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Gleb P. Shumyatsky
- Department of Genetics, Rutgers University, Piscataway, NJ, United States
- *Correspondence: Gleb P. Shumyatsky
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14
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Liu C, Li Y, Wang X. TDAG51-Deficiency Podocytes are Protected from High-Glucose-Induced Damage Through Nrf2 Activation via the AKT-GSK-3β Pathway. Inflammation 2022; 45:1520-1533. [PMID: 35175494 DOI: 10.1007/s10753-022-01638-9] [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: 11/14/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 11/25/2022]
Abstract
T cell death-associated gene 51 (TDAG51) has been implicated in the development of various pathological conditions. However, whether TDAG51 plays a role in diabetic renal disease remains unknown. The current work investigated the possible function of TDAG51 in diabetic renal disease using high-glucose (HG)-stimulated podocytes in vitro. The elevation of TDAG51 was observed in podocytes in response to HG exposure and the glomeruli of diabetic mice. The siRNAs targeting TDAG51 were applied to deplete TDAG51 in HG-stimulated podocytes. Crucially, TDAG51 deficiency was sufficient to decrease the apoptosis, oxidative stress, and inflammation caused by HG. Mechanically, the inhibition of TDAG51 was capable of enhancing the activation of nuclear factor E2-related factor 2 (Nrf2) associated with the upregulation of AKT-glycogen synthase kinase-3β (GSK-3β) pathway. The reduction of AKT abolished the activation of Nrf2 elicited by TDAG51 deficiency. Additionally, the reduction of Nrf2 diminished the anti-HG injury effect elicited by TDAG51 deficiency. Overall, these data demonstrate that TDAG51 deficiency defends against HG-induced podocyte damage through Nrf2 activation by regulating AKT-GSK-3β pathway. This study suggests that TDAG1 may have a potential role in diabetic renal disease by affecting HG-induced podocyte damage.
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Affiliation(s)
- Chuntian Liu
- Department of Geriatrics, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xi'an, 710004, Shaanxi, China.
| | - Yanling Li
- Department of Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xi'an, 710004, Shaanxi, China
| | - Xiaojuan Wang
- Department of Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xi'an, 710004, Shaanxi, China
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15
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Pilomatrical Acanthoma: An Extremely Rare Intraepidermal Variant of Pilomatricoma. Am J Dermatopathol 2022; 44:433-436. [PMID: 35120037 DOI: 10.1097/dad.0000000000002147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT Pilomatrical differentiation can be observed in a variety of benign and malignant tumors, with the most common prototype being pilomatricoma. Pilomatricoma often presents in the deep dermis or subcutis, and the sole involvement of epidermis is extremely rare. In our current case series, specimens from 5 patients were included with an average age of 68 years. All lesions presented as solitary verrucous or keratotic papules on the extremities, with 1 lesion having a prominent horn. All lesions have a variable mixture of basaloid matrical cells and shadow cells, and all lesions express β-catenin (strong nuclear and cytoplasmic), lymphoid enhancer-binding factor 1 within the matrical component, and pleckstrin homology-like domain family A member 1. The histomorphology and immunoprofile of all lesions are of pilomatrical differentiation, confined to the level of the epidermis. Based on these findings and analogous to the terminology used for other benign intraepidermal proliferations (hidroacanthoma simplex and epidermolytic acanthoma), we propose the term "pilomatrical acanthoma" for these rare lesions.
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16
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Peng H, Wang J, Song X, Huang J, Hua H, Wang F, Xu Z, Ma J, Gao J, Zhao J, Nong A, Huang D, Liang B. PHLDA1 Suppresses TLR4-Triggered Proinflammatory Cytokine Production by Interaction With Tollip. Front Immunol 2022; 13:731500. [PMID: 35237256 PMCID: PMC8882599 DOI: 10.3389/fimmu.2022.731500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 01/17/2022] [Indexed: 02/05/2023] Open
Abstract
Pleckstrin homology-like domain, family A, member 1 (PHLDA1) has been reported to be expressed in many mammalian tissues and cells. However, the functions and exact mechanisms of PHLDA1 remain unclear. In this study, we found that PHLDA1 expression was significantly altered in macrophages after exposure to lipopolysaccharide (LPS) in vitro, suggesting that PHLDA1 may be involved in the regulation of TLR4 signaling pathway activated by LPS. PHLDA1 attenuated the production of LPS-stimulated proinflammatory cytokines (TNF-α, IL-6, and IL-1β). Further research showed that the phosphorylation levels of some important signal molecules in TLR4/MyD88-mediated MAPK and NF-κB signaling pathways were reduced by PHLDA1, which in turn impaired the transcription factors NF-κB and AP1 nuclear translocation and their responsive element activities. Furthermore, we found that PHLDA1 repressed LPS-induced proinflammatory cytokine production via binding to Tollip which restrained TLR4 signaling pathway. A mouse model of endotoxemia was established to confirm the above similar results. In brief, our findings demonstrate that PHLDA1 is a negative regulator of LPS-induced proinflammatory cytokine production by Tollip, suggesting that PHLDA1 plays an anti-inflammatory role through inhibiting the TLR4/MyD88 signaling pathway with the help of Tollip. PHLDA1 may be a novel therapeutic target in treating endotoxemia.
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Affiliation(s)
- Hui Peng
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chao Shan Area of Guang Dong Higher Education Institutes, Shantou University Medical College, Shantou, China
- Department of Clinical Laboratory, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Juping Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Xuhong Song
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chao Shan Area of Guang Dong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Jiangni Huang
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Haoming Hua
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Fanlu Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Ziyun Xu
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Jing Ma
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Jie Gao
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Jing Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Anna Nong
- Department of Pathophysiology, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, China
| | - Dongyang Huang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chao Shan Area of Guang Dong Higher Education Institutes, Shantou University Medical College, Shantou, China
- *Correspondence: Bin Liang, ; Dongyang Huang,
| | - Bin Liang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chao Shan Area of Guang Dong Higher Education Institutes, Shantou University Medical College, Shantou, China
- *Correspondence: Bin Liang, ; Dongyang Huang,
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Zhao H, Liu Y, Chen N, Yu H, Liu S, Qian M, Zhang Z. PHLDA1 Blockade Alleviates Cerebral Ischemia/Reperfusion Injury by Affecting Microglial M1/M2 Polarization and NLRP3 Inflammasome Activation. Neuroscience 2022; 487:66-77. [DOI: 10.1016/j.neuroscience.2022.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/13/2022] [Accepted: 01/20/2022] [Indexed: 10/19/2022]
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18
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Carlisle RE, Mohammed-Ali Z, Lu C, Yousof T, Tat V, Nademi S, MacDonald ME, Austin RC, Dickhout JG. TDAG51 induces renal interstitial fibrosis through modulation of TGF-β receptor 1 in chronic kidney disease. Cell Death Dis 2021; 12:921. [PMID: 34625532 PMCID: PMC8501078 DOI: 10.1038/s41419-021-04197-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 08/17/2021] [Accepted: 09/08/2021] [Indexed: 12/28/2022]
Abstract
Chronic kidney disease (CKD) is characterized by the gradual loss of renal function and is a major public health concern. Risk factors for CKD include hypertension and proteinuria, both of which are associated with endoplasmic reticulum (ER) stress. ER stress-induced TDAG51 protein expression is increased at an early time point in mice with CKD. Based on these findings, wild-type and TDAG51 knock-out (TDKO) mice were used in an angiotensin II/deoxycorticosterone acetate/salt model of CKD. Both wild-type and TDKO mice developed hypertension, increased proteinuria and albuminuria, glomerular injury, and tubular damage. However, TDKO mice were protected from apoptosis and renal interstitial fibrosis. Human proximal tubular cells were used to demonstrate that TDAG51 expression induces apoptosis through a CHOP-dependent mechanism. Further, a mouse model of intrinsic acute kidney injury demonstrated that CHOP is required for ER stress-mediated apoptosis. Renal fibroblasts were used to demonstrate that TGF-β induces collagen production through an IRE1-dependent mechanism; cells treated with a TGF-β receptor 1 inhibitor prevented XBP1 splicing, a downstream consequence of IRE1 activation. Interestingly, TDKO mice express significantly less TGF-β receptor 1, thus, preventing TGF-β-mediated XBP1 splicing. In conclusion, TDAG51 induces apoptosis in the kidney through a CHOP-dependent mechanism, while contributing to renal interstitial fibrosis through a TGF-β-IRE1-XBP1 pathway.
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Affiliation(s)
- Rachel E Carlisle
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Zahraa Mohammed-Ali
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Chao Lu
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Tamana Yousof
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Victor Tat
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Samera Nademi
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Melissa E MacDonald
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Richard C Austin
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada
| | - Jeffrey G Dickhout
- McMaster University and The Research Institute of St. Joe's Hamilton, Department of Medicine, Division of Nephrology, Hamilton, Canada.
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Xu J, Bi G, Luo Q, Liu Y, Liu T, Li L, Zeng Q, Wang Q, Wang Y, Yu J, Yi P. PHLDA1 Modulates the Endoplasmic Reticulum Stress Response and is required for Resistance to Oxidative Stress-induced Cell Death in Human Ovarian Cancer Cells. J Cancer 2021; 12:5486-5493. [PMID: 34405011 PMCID: PMC8364641 DOI: 10.7150/jca.45262] [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: 02/24/2020] [Accepted: 04/21/2021] [Indexed: 11/10/2022] Open
Abstract
Objective: Pleckstrin homology-like domain family A member 1 (PHLDA1) has been implicated in the regulation of apoptosis in a variety of normal cell types and cancers. However, its precise pathophysiological functions remain unclear. Here, we examined the expression of PHLDA1 in human ovarian cancer (OvCa), the most lethal gynecologic malignancy, and investigated its functions in vitro. Materials and Methods: The expression of PHLDA1 was detected by reverse-transcription quantitative PCR (RT-qPCR), immunohistochemical analysis, or western blotting, silencing of PHLDA was achieved by shRNA, cell proliferation was detected by MTT assay, apoptosis was detected by flow cytometric analysis, PHLDA1 transcriptional activity was detected by dual luciferase reporter assay. Results: PHLDA1 mRNA levels were significantly higher in serous OvCa specimens compared with normal ovarian tissue, confirmed by immunohistochemical staining of PHLDA1 protein, which also indicated the expression was predominantly cytoplasmic. Bioinformatics analysis of publicly available datasets indicated that PHLDA1 expression in clinical specimens was significantly associated with disease stage, progression-free survival, and overall survival. In human OvCa cell lines, shRNA-mediated silencing of PHLDA1 expression enhanced apoptosis after exposure to oxidative stress- and endoplasmic reticulum stress-inducing agents. PHLDA1 silencing increased not the expression of anti-apoptotic or autophagy-related proteins, but the expression of ER stress response-associated proteins. Conclusion: PHLDA1 modulates the susceptibility of human OvCa cells to apoptosis via the endoplasmic reticulum stress response pathway.
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Affiliation(s)
- Jing Xu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, PR China
| | - Gang Bi
- Department of Urology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Qingya Luo
- Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Yi Liu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, PR China.,Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Tao Liu
- Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Lanfang Li
- Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Qi Zeng
- Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Qien Wang
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
| | - Yufeng Wang
- Cancer Research Institute of Jilin University, The First Hospital of Jilin University, Changchun 130021, PR China
| | - Jianhua Yu
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA.,Department of Hematology and Hematopoietic Cell Transplantation, Comprehensive Cancer Center, City of Hope National Medical Center, Duarte, California 91010, USA
| | - Ping Yi
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, PR China.,Department of Obstetrics and Gynecology, Daping Hospital, Army Medical University, Chongqing 400042, PR China
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20
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Yang F, Chen R. Loss of PHLDA1 has a protective role in OGD/R-injured neurons via regulation of the GSK-3β/Nrf2 pathway. Hum Exp Toxicol 2021; 40:1909-1920. [PMID: 33938317 DOI: 10.1177/09603271211014596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Pleckstrin homology-like domain, family A, member 1 (PHLDA1) is a multifunctional protein that plays a role in diverse pathological conditions. However, whether PHLDA1 participates in cerebral ischemia-reperfusion injury has not been reported. The goals of the present work were to assess the possible relationship between PHLDA1 and cerebral ischemia-reperfusion injury. Hippocampal neurons were subjected to oxygen-glucose deprivation/reoxygenation (OGD/R) to simulate cerebral ischemia-reperfusion injury in vitro, which led to significant increases in the expression of PHLDA1. Cellular functional studies showed that the knockdown of PHLDA1 produced a protective role in OGD/R-injured neurons via the down-regulation of neuronal apoptosis, oxidative stress and proinflammatory cytokine release. On the contrary, the overexpression of PHLDA1 rendered neurons more vulnerable to OGD/R injury. In-depth research revealed that the inhibition of PHLDA1 resulted in the enhancement of nuclear factor erythroid 2 like 2 (Nrf2) signaling in OGD/R-injured neurons. The reactivation of glycogen synthase kinase 3β (GSK-3β) abolished the PHLDA1-inhibition-mediated activation of Nrf2 signaling. Moreover, the restraint of Nrf2 signaling diminished the PHLDA1-knockdown-induced neuroprotective effects in OGD/R-injured neurons. In summary, the data of our work show that the loss of PHLDA1 protects against OGD/R injury via potentiating Nrf2 signaling via the regulation of GSK-3β. This work underscores a potential role of PHLDA1 in cerebral ischemia-reperfusion injury and proposes PHLDA1 as an attractive target for the development of neuroprotective therapy.
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Affiliation(s)
- F Yang
- Department of Pharmacy, Xianyang Hospital of Yan'an University, Xianyang, Shaanxi, China
| | - R Chen
- Yizhixin Biotechnology Institute, Xi'an, Shaanxi, China
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21
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Angiolini E, Sandovici I, Coan PM, Burton GJ, Sibley CP, Fowden AL, Constância M. Deletion of the Imprinted Phlda2 Gene Increases Placental Passive Permeability in the Mouse. Genes (Basel) 2021; 12:genes12050639. [PMID: 33922969 PMCID: PMC8146920 DOI: 10.3390/genes12050639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/09/2021] [Accepted: 04/23/2021] [Indexed: 11/16/2022] Open
Abstract
Genomic imprinting, an epigenetic phenomenon that causes the expression of a small set of genes in a parent-of-origin-specific manner, is thought to have co-evolved with placentation. Many imprinted genes are expressed in the placenta, where they play diverse roles related to development and nutrient supply function. However, only a small number of imprinted genes have been functionally tested for a role in nutrient transfer capacity in relation to the structural characteristics of the exchange labyrinthine zone. Here, we examine the transfer capacity in a mouse model deficient for the maternally expressed Phlda2 gene, which results in placental overgrowth and a transient reduction in fetal growth. Using stereology, we show that the morphology of the labyrinthine zone in Phlda2−/+ mutants is normal at E16 and E19. In vivo placental transfer of radiolabeled solutes 14C-methyl-D-glucose and 14C-MeAIB remains unaffected at both gestational time points. However, placental passive permeability, as measured using two inert hydrophilic solutes (14C-mannitol; 14C-inulin), is significantly higher in mutants. Importantly, this increase in passive permeability is associated with fetal catch-up growth. Our findings uncover a key role played by the imprinted Phlda2 gene in modifying placental passive permeability that may be important for determining fetal growth.
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Affiliation(s)
- Emily Angiolini
- University of Cambridge Metabolic Research Laboratories and MRC Metabolic Diseases Unit, Institute of Metabolic Science, Addenbrookes Hospital, Cambridge CB2 0QQ, UK; (E.A.); (I.S.)
- Department of Obstetrics and Gynaecology, National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 0SW, UK
- Epigenetics Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK
| | - Ionel Sandovici
- University of Cambridge Metabolic Research Laboratories and MRC Metabolic Diseases Unit, Institute of Metabolic Science, Addenbrookes Hospital, Cambridge CB2 0QQ, UK; (E.A.); (I.S.)
- Department of Obstetrics and Gynaecology, National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 0SW, UK
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (P.M.C.); (G.J.B.); (A.L.F.)
| | - Philip M. Coan
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (P.M.C.); (G.J.B.); (A.L.F.)
| | - Graham J. Burton
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (P.M.C.); (G.J.B.); (A.L.F.)
| | - Colin P. Sibley
- Maternal and Fetal Health Research Centre, Division of Developmental Biology and Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9WL, UK;
- Manchester Academic Health Science Centre, St. Mary’s Hospital, Manchester University NHS Foundation Trust, Manchester M13 9WL, UK
| | - Abigail L. Fowden
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (P.M.C.); (G.J.B.); (A.L.F.)
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK
| | - Miguel Constância
- University of Cambridge Metabolic Research Laboratories and MRC Metabolic Diseases Unit, Institute of Metabolic Science, Addenbrookes Hospital, Cambridge CB2 0QQ, UK; (E.A.); (I.S.)
- Department of Obstetrics and Gynaecology, National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 0SW, UK
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (P.M.C.); (G.J.B.); (A.L.F.)
- Correspondence: ; Tel.: +44-1223-336873
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22
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Luo YH, Huang ZT, Zong KZ, Cao ZR, Peng DD, Zhou BY, Shen A, Yan P, Wu ZJ. miR-194 ameliorates hepatic ischemia/reperfusion injury via targeting PHLDA1 in a TRAF6-dependent manner. Int Immunopharmacol 2021; 96:107604. [PMID: 33839577 DOI: 10.1016/j.intimp.2021.107604] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/09/2021] [Accepted: 03/18/2021] [Indexed: 02/07/2023]
Abstract
Hepatic ischemia/reperfusion injury (IRI) is an inevitable pathological process in liver resection, shock and transplantation. However, the internal mechanism of hepatic IRI, including inflammatory transduction of multiple signaling pathways, is not fully understood. In the present study, we identified pleckstrin homology-like domain family member 1 (PHLDA1), suppressed by microRNA (miR)-194, as a critical intersection of dual inflammatory signals in hepatic IRI. PHLDA1 was upregulated in hepatic IRI with a concomitant downregulation of miR-194. Overexpression of miR-194 diminished PHLDA1 and inhibitors of the nuclear factor kappa-B kinase (IKK) pathway, thus leading to remission of hepatic pathological injury, apoptosis and release of cytokines. Further enrichment of PHLDA1 reversed the function of miR-194 both in vivo and in vitro. For an in-depth query, we verified PHLDA1 as a direct target of miR-194. Notably, inflammatory signal transduction of PHLDA1 was induced by activating TNF receptor-associated factor 6 (TRAF6), sequentially initiating IKK and mitogen-activated protein kinase (MAPK), both of which aggravate stress and inflammation in hepatic IRI. In conclusion, the miR-194/PHLDA1 axis was a key upstream regulator of IKK and MAPK in hepatic IRI. Targeting PHLDA1 might be a potential strategy for hepatic IRI therapy.
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Affiliation(s)
- Yun-Hai Luo
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zuo-Tian Huang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Ke-Zhen Zong
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhen-Rui Cao
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Da-Di Peng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Bao-Yong Zhou
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Ai Shen
- Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Ping Yan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhong-Jun Wu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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23
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Kim S, Lee N, Park ES, Yun H, Ha TU, Jeon H, Yu J, Choi S, Shin B, Yu J, Rhee SD, Choi Y, Rho J. T-Cell Death Associated Gene 51 Is a Novel Negative Regulator of PPARγ That Inhibits PPARγ-RXRα Heterodimer Formation in Adipogenesis. Mol Cells 2021; 44:1-12. [PMID: 33335079 PMCID: PMC7854182 DOI: 10.14348/molcells.2020.0143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/06/2020] [Accepted: 11/27/2020] [Indexed: 11/27/2022] Open
Abstract
The nuclear receptor peroxisome proliferator-activated receptor γ (PPARγ) is the master transcriptional regulator in adipogenesis. PPARγ forms a heterodimer with another nuclear receptor, retinoid X receptor (RXR), to form an active transcriptional complex, and their transcriptional activity is tightly regulated by the association with either coactivators or corepressors. In this study, we identified T-cell death-associated gene 51 (TDAG51) as a novel corepressor of PPARγ-mediated transcriptional regulation. We showed that TDAG51 expression is abundantly maintained in the early stage of adipogenic differentiation. Forced expression of TDAG51 inhibited adipocyte differentiation in 3T3-L1 cells. We found that TDAG51 physically interacts with PPARγ in a ligand-independent manner. In deletion mutant analyses, large portions of the TDAG51 domains, including the pleckstrin homology-like, glutamine repeat and proline-glutamine repeat domains but not the proline-histidine repeat domain, are involved in the interaction with the region between residues 140 and 506, including the DNA binding domain, hinge, ligand binding domain and activation function-2 domain, in PPARγ. The heterodimer formation of PPARγ-RXRα was competitively inhibited in a ligand-independent manner by TDAG51 binding to PPARγ. Thus, our data suggest that TDAG51, which could determine adipogenic cell fate, acts as a novel negative regulator of PPARγ by blocking RXRα recruitment to the PPARγ-RXRα heterodimer complex in adipogenesis.
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Affiliation(s)
- Sumi Kim
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Nari Lee
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Eui-Soon Park
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Hyeongseok Yun
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Tae-Uk Ha
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Hyoeun Jeon
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Jiyeon Yu
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Seunga Choi
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Bongjin Shin
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Jungeun Yu
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
| | - Sang Dal Rhee
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
| | - Yongwon Choi
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea
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24
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R Mangone F, Av Valoyes M, G do Nascimento R, Pf Conceição M, R Bastos D, C Pavanelli A, C Soares I, S de Mello E, Nonogaki S, Ab de T Osório C, A Nagai M. Prognostic and predictive value of Pleckstrin homology-like domain, family A family members in breast cancer. Biomark Med 2020; 14:1537-1552. [PMID: 33179538 DOI: 10.2217/bmm-2020-0417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: The PHLDA (pleckstrin homology like domain, family A) gene family encodes proteins capable of inhibiting AKT (serine/threonine kinase) signaling through phosphoinositol binding competition. Results & methodology: Using in silico analysis, we found that Luminal A and B patients' short relapse-free survival was associated with low PHLDA1 or PHLDA3 and high PHLDA2 expression. In a cohort of 393 patients with luminal breast cancer evaluated by immunohistochemistry on tissue microarrays, we found a direct association of PHLDA3 expression with hormonal therapy response (p = 0.013). Conclusion: Our findings provide new information on the role played by the PHLDA family members as prognostic markers in breast cancer, and more importantly, we provide evidence that they might also predict a response to endocrine therapy.
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Affiliation(s)
- Flavia R Mangone
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Maira Av Valoyes
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Renan G do Nascimento
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Mércia Pf Conceição
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Daniel R Bastos
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Ana C Pavanelli
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
| | - Iberê C Soares
- Department of Pathology, Instituto do Cancer, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 01246-903, São Paulo, Brazil
| | - Evandro S de Mello
- Department of Pathology, Instituto do Cancer, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 01246-903, São Paulo, Brazil
| | - Suely Nonogaki
- Department of Pathological Anatomy, A. C. Camargo Cancer Center, 01509-020, Sao Paulo, Brazil
| | - Cynthia Ab de T Osório
- Department of Pathological Anatomy, A. C. Camargo Cancer Center, 01509-020, Sao Paulo, Brazil
| | - Maria A Nagai
- Discipline of Oncology, Department of Radiology & Oncology, Faculty of Medicine, University of Sao Paulo, 01246-903, Sao Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of Sao Paulo, 01246-000, Sao Paulo, Brazil
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25
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Yao B, Niu Y, Li Y, Chen T, Wei X, Liu Q. High-matrix-stiffness induces promotion of hepatocellular carcinoma proliferation and suppression of apoptosis via miR-3682-3p-PHLDA1-FAS pathway. J Cancer 2020; 11:6188-6203. [PMID: 33033502 PMCID: PMC7532500 DOI: 10.7150/jca.45998] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 08/13/2020] [Indexed: 12/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) with malignant behaviors related to death causes distant metastasis and is the fourth primary cancer in the whole world, which has taken millions lives in Asian countries such as China. The novel miR-3682-3p involving high-expression-related poor prognosis in HCC tissues and cell lines indicate oncogenesis functions in vitro and in vivo. According to TCGA database, our group find several none-coding RNAs showing abnormal expression including miR-3682-3p, thus we originally confirmed the inhibition of proliferation and acceleration of apoptosis are enhanced in miR-3682-3p knock-down cell lines. Then, in nude mice transplantation assays, we found the suppressor behaviors, smaller nodules and lower speed of tumor expansion in model of injection of cell cultured and transfected shRNA-miR-3682-3p. A combination of databases (Starbase, Targetscan and MiRgator) illustrates miR-3682-3p targets PHLDA1, which shows negative correlation demonstrated by dual-luciferase reporter system. To make functional verification of PHLDA1, we upregulate the gene and rescue tests are established to confirm that miR-3682-3p suppresses PHLDA1 to promotion of cell growth. Rescue experiments finish making confirmation of relation of miR-3682-3p and PHLDA1 subsequently. Cirrhotic tissues illustrate strong correlation to higher miR-3682-3p and clinical features make the hint that high-extracellular-matrix-stiffness environment promotes such miRNA. Functional tests on different stiffness provide the proof of underlying mechanism. In conclusion, the overexpression of miR-3682-3p mediates PHLDA1 inhibition could impede apoptosis and elevate proliferation of HCC through high-extracellular-matrix-stiffness environment potentially.
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Affiliation(s)
- Bowen Yao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an 710061, China
| | - Yongshen Niu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an 710061, China
| | - Yazhao Li
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an 710061, China
| | - Tianxiang Chen
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an 710061, China
| | - Xinyu Wei
- Medicine college, Xi'an Jiaotong University, No. 76 Yanta West Road, Xi'an 710061, China
| | - Qingguang Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an 710061, China
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26
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Han C, Yan P, He T, Cheng J, Zheng W, Zheng LT, Zhen X. PHLDA1 promotes microglia-mediated neuroinflammation via regulating K63-linked ubiquitination of TRAF6. Brain Behav Immun 2020; 88:640-653. [PMID: 32353516 DOI: 10.1016/j.bbi.2020.04.064] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/24/2020] [Accepted: 04/25/2020] [Indexed: 12/22/2022] Open
Abstract
Microglia-mediated neuroinflammation plays an important role in the progression of neurodegenerative diseases including Parkinson's disease (PD). Pleckstrin homology-like domain family A member 1 (PHLDA1) plays an important role in immunological regulation, particularly in the Toll-like receptor-mediated immune response. Here, we explored the potential roles of PHLDA1 in microglia-mediated inflammation and neuronal protection. We found that PHLDA1 expression was rapidly increased in response to inflammatory stimuli in microglia cells in vivo or in vitro. Knockdown of PHLDA1 using adeno-associated virus serotype (AAV) ameliorated MPTP-induced motor deficits and inhibited neuroinflammation in mice. In support of this observation in vivo, we found that LPS-induced proinflammatory gene expression, including TNF-α, IL-1β, iNOS, and COX-2, was decreased in PHLDA1-deficient microglial cells. Mechanistic studies demonstrated that increased expression of PHLDA1, upon LPS stimulation in microglia, led to direct interaction with TRAF6 and enhanced its K63-linked ubiquitination-mediated NF-κB signaling activation. PHLDA1 deficiency interfered with TRAF6 K63-linked ubiquitination and inhibited microglial inflammatory responses. These findings reveal the first evidence that PHLDA1 is an important modulator of microglial function that is associated with microglia-mediated dopaminergic neurotoxicity. The data therefore provided the first evidence that PHLDA1 may be a potent modulator for neuroinflammation, and PHLDA1 may be a novel drug target for treatment of neuroinflammation-related diseases such as PD.
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Affiliation(s)
- Chaojun Han
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China
| | - Pengju Yan
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China
| | - Tao He
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China
| | - Junjie Cheng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China
| | - Wenhua Zheng
- Center of Reproduction, Development and Aging, Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Long-Tai Zheng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China.
| | - Xuechu Zhen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China; College of Pharmaceutical Sciences and the Collaborative Innovation Center for Brain Science, Soochow University, Suzhou, China.
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27
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Wu J, Zhang W, Li C. Recent Advances in Genetic and Epigenetic Modulation of Animal Exposure to High Temperature. Front Genet 2020; 11:653. [PMID: 32733534 PMCID: PMC7358359 DOI: 10.3389/fgene.2020.00653] [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: 01/29/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
Animals have evolved multiple systems, including genetic and epigenetic systems, to respond accordingly to heat exposure and heat acclimation. Heat exposure greatly affects immunity, changes metabolic processes, and poses a serious threat to animals. Heat acclimation is induced by repeated organism exposure to heat stress to dissipate heat. This review focuses on genetic modulation via heat shock transcription factors and calcium as two important factors and compares the changes in HSPs under heat stress and heat acclimation. Epigenetic regulation summarizes the role of HSPs in DNA methylation and histone modifications under heat stress and heat acclimation. These genetic and epigenetic modifications protect cells from thermal damage by mediating the transcriptional levels of heat-responsive genes. This review highlights recent advances in the genetic and epigenetic control of animal thermal responses and their interactions.
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Affiliation(s)
- Jiong Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
| | - Weiwei Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
| | - Chenghua Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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28
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Platko K, Lebeau PF, Gyulay G, Lhoták Š, MacDonald ME, Pacher G, Hyun Byun J, Boivin FJ, Igdoura SA, Cutz JC, Bridgewater D, Ingram AJ, Krepinsky JC, Austin RC. TDAG51 (T-Cell Death-Associated Gene 51) Is a Key Modulator of Vascular Calcification and Osteogenic Transdifferentiation of Arterial Smooth Muscle Cells. Arterioscler Thromb Vasc Biol 2020; 40:1664-1679. [PMID: 32434409 DOI: 10.1161/atvbaha.119.313779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Cardiovascular disease is the primary cause of mortality in patients with chronic kidney disease. Vascular calcification (VC) in the medial layer of the vessel wall is a unique and prominent feature in patients with advanced chronic kidney disease and is now recognized as an important predictor and independent risk factor for cardiovascular and all-cause mortality in these patients. VC in chronic kidney disease is triggered by the transformation of vascular smooth muscle cells (VSMCs) into osteoblasts as a consequence of elevated circulating inorganic phosphate (Pi) levels, due to poor kidney function. The objective of our study was to investigate the role of TDAG51 (T-cell death-associated gene 51) in the development of medial VC. METHODS AND RESULTS Using primary mouse and human VSMCs, we found that TDAG51 is induced in VSMCs by Pi and is expressed in the medial layer of calcified human vessels. Furthermore, the transcriptional activity of RUNX2 (Runt-related transcription factor 2), a well-established driver of Pi-mediated VC, is reduced in TDAG51-/- VSMCs. To explain these observations, we identified that TDAG51-/- VSMCs express reduced levels of the type III sodium-dependent Pi transporter, Pit-1, a solute transporter, a solute transporter, a solute transporter responsible for cellular Pi uptake. Significantly, in response to hyperphosphatemia induced by vitamin D3, medial VC was attenuated in TDAG51-/- mice. CONCLUSIONS Our studies highlight TDAG51 as an important mediator of Pi-induced VC in VSMCs through the downregulation of Pit-1. As such, TDAG51 may represent a therapeutic target for the prevention of VC and cardiovascular disease in patients with chronic kidney disease.
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Affiliation(s)
- Khrystyna Platko
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Paul F Lebeau
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Gabriel Gyulay
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Šárka Lhoták
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Melissa E MacDonald
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Giusepina Pacher
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Jae Hyun Byun
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Felix J Boivin
- Department of Pathology and Molecular Medicine (F.J.B., S.A.I., D.B.), McMaster University Medical Centre, Hamilton, ON, Canada
| | - Suleiman A Igdoura
- Department of Pathology and Molecular Medicine (F.J.B., S.A.I., D.B.), McMaster University Medical Centre, Hamilton, ON, Canada.,Department of Biology (S.A.I.), McMaster University Medical Centre, Hamilton, ON, Canada
| | - Jean-Claude Cutz
- Department of Pathology and Molecular Medicine (J.-C.C.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Darren Bridgewater
- Department of Pathology and Molecular Medicine (F.J.B., S.A.I., D.B.), McMaster University Medical Centre, Hamilton, ON, Canada
| | - Alistair J Ingram
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Joan C Krepinsky
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
| | - Richard C Austin
- From the Division of Nephrology, Department of Medicine (K.P., P.F.L., G.G., Š.L., M.E.M., G.P., J.H.B., A.J.I., J.C.K., R.C.A.), McMaster University, and The Research Institute of St. Joseph's Hamilton, ON, Canada
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Fuselier TT, Lu H. PHLD Class Proteins: A Family of New Players in the p53 Network. Int J Mol Sci 2020; 21:ijms21103543. [PMID: 32429563 PMCID: PMC7278972 DOI: 10.3390/ijms21103543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 12/12/2022] Open
Abstract
The Pleckstrin Homology-like Domain (PHLD) class of proteins are multifunctional proteins. The class is comprised of two families of proteins, PHLDA and PHLDB, each with 3 members. All members of the families possess a pleckstrin homology (PH) domain. Though identified nearly 30 years ago, this class of proteins remains understudied with PHLDA family members receiving most of the research attention. Recent studies have also begun to reveal the functions of the PHLDB family proteins in regulation of p53 and AKT signaling pathways important for cancer and metabolism. This review will discuss current research and offer some prospects on the possible roles of both families in cancer and metabolism.
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Affiliation(s)
- Taylor T. Fuselier
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA 70112, USA;
- Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Hua Lu
- Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Correspondence:
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Guo Y, Jia P, Chen Y, Yu H, Xin X, Bao Y, Yang H, Wu N, Sun Y, Jia D. PHLDA1 is a new therapeutic target of oxidative stress and ischemia reperfusion-induced myocardial injury. Life Sci 2020; 245:117347. [PMID: 31981628 DOI: 10.1016/j.lfs.2020.117347] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
Abstract
AIM Oxidative stress plays an important role in myocardial ischemia-reperfusion injury. Pleckstrin homology-like domain, family A, member 1 (PHLDA1) was first identified in apoptosis induced by T cell receptor activation, and was shown to play a different role in different cell types and under different stimuli. The role and mechanism of PHLDA1 in oxidative stress-induced cardiomyocyte injury and cardiac ischemia-reperfusion were therefore determined. MAIN METHODS Cell viability and apoptotic rate were measured by Cell Counting Kit-8 and flow cytometry, respectively. Mitochondrial membrane potential was measured using JC-1 test kit. Reactive oxygen species (ROS) production was detected using ROS kit. HE staining was used to detect histological morphology, 2,3,5-triphenyltetrazolium chloride staining to detect infarct size, terminal deoxynucleotidyl transferase dUTP nick end labeling staining to detect the apoptotic rate, and immunohistochemistry and western blot analysis to detect protein expression. The binding of PHLDA1 to Bcl-2 associated X (Bax) was detected by immunoprecipitation. KEY FINDINGS The results indicated that PHLDA1 is highly expressed in oxidative stress-induced cardiomyocyte and myocardial ischemia-reperfusion injuries. PHLDA1 overexpression in cardiomyocytes promoted oxidative stress-induced cardiomyocyte injury. At the same time, PHLDA1 knockdown improved oxidative stress-induced cardiomyocyte and myocardial ischemia-reperfusion injuries. In addition, PHLDA1 binds to Bax and the interaction is enhanced under H2O2 stimulation. SIGNIFICANCE The present results indicated that PHLDA1 interacts with Bax to participate in oxidative stress-induced cardiomyocyte injury and myocardial ischemia reperfusion injury.
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Affiliation(s)
- Yuxuan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yuqiong Chen
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Hang Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Xin Xin
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Huimin Yang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Nan Wu
- Central Laboratory of The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yingxian Sun
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China.
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China.
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PHLDA1 Does Not Contribute Directly to Heat Shock-Induced Apoptosis of Spermatocytes. Int J Mol Sci 2019; 21:ijms21010267. [PMID: 31906015 PMCID: PMC6982182 DOI: 10.3390/ijms21010267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/25/2019] [Accepted: 12/27/2019] [Indexed: 01/09/2023] Open
Abstract
Spermatocytes are among the most heat-sensitive cells and the exposure of testes to heat shock results in their Heat Shock Factor 1 (HSF1)-mediated apoptosis. Several lines of evidence suggest that pleckstrin-homology-like domain family A, member 1 (PHLDA1) plays a role in promoting heat shock-induced cell death in spermatogenic cells, yet its precise physiological role is not well understood. Aiming to elucidate the hypothetical role of PHLDA1 in HSF1-mediated apoptosis of spermatogenic cells we characterized its expression in mouse testes during normal development and after heat shock. We stated that transcription of Phlda1 is upregulated by heat shock in many adult mouse organs including the testes. Analyzes of the Phlda1 expression during postnatal development indicate that it is expressed in pre-meiotic or somatic cells of the testis. It starts to be transcribed much earlier than spermatocytes are fully developed and its transcripts and protein products do not accumulate further in the later stages. Moreover, neither heat shock nor expression of constitutively active HSF1 results in the accumulation of PHLDA1 protein in meiotic and post-meiotic cells although both conditions induce massive apoptosis of spermatocytes. Furthermore, the overexpression of PHLDA1 in NIH3T3 cells leads to cell detachment, yet classical apoptosis is not observed. Therefore, our findings indicate that PHLDA1 cannot directly contribute to the heat-induced apoptosis of spermatocytes. Instead, PHLDA1 could hypothetically participate in death of spermatocytes indirectly via activation of changes in the somatic or pre-meiotic cells present in the testes.
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Durbas M, Pabisz P, Wawak K, Wiśniewska A, Boratyn E, Nowak I, Horwacik I, Woźnicka O, Rokita H. GD2 ganglioside-binding antibody 14G2a and specific aurora A kinase inhibitor MK-5108 induce autophagy in IMR-32 neuroblastoma cells. Apoptosis 2019; 23:492-511. [PMID: 30027525 PMCID: PMC6153511 DOI: 10.1007/s10495-018-1472-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The process of autophagy and its role in survival of human neuroblastoma cell cultures was studied upon addition of an anti-GD2 ganglioside (GD2) 14G2a mouse monoclonal antibody (14G2a mAb) and an aurora A kinase specific inhibitor, MK-5108. It was recently shown that combination of these agents significantly potentiates cytotoxicity against IMR-32 and CHP-134 neuroblastoma cells in vitro, as compared to the inhibitor used alone. In this study we gained mechanistic insights on autophagy in the observed cytotoxic effects exerted by both agents using cytotoxicity assays, RT-qPCR, immunoblotting, and autophagy detection methods. Enhancement of the autophagy process in the 14G2a mAb- and MK-5108-treated IMR-32 cells was documented by assessing autophagic flux. Application of a lysosomotropic agent-chloroquine (CQ) affected the 14G2a mAb- and MK-5108-stimulated autophagic flux. It is our conclusion that the 14G2a mAb (40 μg/ml) and MK-5108 inhibitor (0.1 μM) induce autophagy in IMR-32 cells. Moreover, the combinatorial treatment of IMR-32 cells with the 14G2a mAb and CQ significantly potentiates cytotoxic effect, as compared to CQ used alone. Most importantly, we showed that interfering with autophagy at its early and late step augments the 14G2a mAb-induced apoptosis, therefore we can conclude that inhibition of autophagy is the primary mechanism of the CQ-mediated sensitization to the 14G2a mAb-induced apoptosis. Although, there was no virtual stimulation of autophagy in the 14G2a mAb-treated CHP-134 neuroblastoma cells, we were able to show that PHLDA1 protein positively regulates autophagy and this process exists in a mutually exclusive manner with apoptosis in PHLDA1-silenced CHP-134 cells.
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Affiliation(s)
- Małgorzata Durbas
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland.
| | - Paweł Pabisz
- Departament of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Katarzyna Wawak
- Departament of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Aneta Wiśniewska
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Elżbieta Boratyn
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Iwona Nowak
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Irena Horwacik
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Olga Woźnicka
- Department of Cell Biology and Imaging, Faculty of Biology, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387, Kraków, Poland
| | - Hanna Rokita
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
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Hong T, Li R, Sun LL, Xu J, He MT, Wang W, Yan R, Tong J, Zhang J. Role of the gene Phlda1 in fenvalerate-induced apoptosis and testicular damage in Sprague-Dawley rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:870-878. [PMID: 31524104 DOI: 10.1080/15287394.2019.1664584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fenvalerate (FEN), a pyrethroid insecticide used worldwide, has been shown to produce a potentially adverse effect on male reproduction. However the mechanisms are not completely understood. Thus this study aimed to (1) determine whether cellular apoptosis was involved in FEN-induced testicular damage in rats, and (2) identify the potential mechanism involved in FEN-induced apoptosis in testes. Data demonstrated that FEN markedly decreased serum testosterone levels, increased the inner diameter of seminiferous tubules, decreased the layers of spermatogenic cells, disturbed spermatogenesis and increased the number of apoptotic cells. Further, bioinformatic analysis of gene microarray in rat testis tissue showed that FEN significantly altered the expressions of genes (Krt8, Mal, Cd24, Lcn2, Phlda1, Arg2) related to apoptotic related processes. The expression pattern of these 6 genes was upregulated in FEN-treated rat testicular tissue. qRT-PCR analysis demonstrated that Phlda1, a well-documented pro-apoptotic factor, was significantly elevated by FEN. The expression of PHLDA1 testicular protein was also elevated following FEN exposure. In conclusion, our results suggest that FEN exposure induced deleterious effects on rat testes associated with Phlda1-mediated apoptosis which may act as a molecular mechanism underlying FEN induced rat testicular damage.
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Affiliation(s)
- Ting Hong
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Ru Li
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Lu-Lu Sun
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Jie Xu
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Meng-Ting He
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Wei Wang
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Rui Yan
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Jian Tong
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
| | - Jie Zhang
- Department of Toxicology, School of Public Health, Medical College of Soochow University , Suzhou , Jiangsu , China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases
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Yun H, Park ES, Choi S, Shin B, Yu J, Yu J, Amarasekara DS, Kim S, Lee N, Choi JS, Choi Y, Rho J. TDAG51 is a crucial regulator of maternal care and depressive-like behavior after parturition. PLoS Genet 2019; 15:e1008214. [PMID: 31251738 PMCID: PMC6599150 DOI: 10.1371/journal.pgen.1008214] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 05/27/2019] [Indexed: 12/11/2022] Open
Abstract
Postpartum depression is a severe emotional and mental disorder that involves maternal care defects and psychiatric illness. Postpartum depression is closely associated with a combination of physical changes and physiological stress during pregnancy or after parturition in stress-sensitive women. Although postpartum depression is relatively well known to have deleterious effects on the developing fetus, the influence of genetic risk factors on the development of postpartum depression remains unclear. In this study, we discovered a novel function of T cell death-associated gene 51 (TDAG51/PHLDA1) in the regulation of maternal and depressive-like behavior. After parturition, TDAG51-deficient dams showed impaired maternal behavior in pup retrieving, nursing and nest building tests. In contrast to the normal dams, the TDAG51-deficient dams also exhibited more sensitive depressive-like behaviors after parturition. Furthermore, changes in the expression levels of various maternal and depressive-like behavior-associated genes regulating neuroendocrine factor and monoamine neurotransmitter levels were observed in TDAG51-deficient postpartum brain tissues. These findings indicate that TDAG51 plays a protective role against maternal care defects and depressive-like behavior after parturition. Thus, TDAG51 is a maternal care-associated gene that functions as a crucial regulator of maternal and depressive-like behavior after parturition. Postpartum depression is a severe emotional and mental disease that can affect women typically after parturition. However, the genetic risk factors associated with the development of postpartum depression are still largely unknown. We discovered a novel function of T cell death-associated gene 51 (TDAG51) in the regulation of maternal behavior and postpartum depression. We report that TDAG51 deficiency induces depressive-like and abnormal maternal behavior after parturition. The loss of TDAG51 in postpartum brain tissues induces changes in the expression levels of various maternal and depressive-like behavior-associated genes that regulate the levels of neuroendocrine factors and monoamine neurotransmitters. TDAG51 is a maternal care-associated gene that functions as a crucial regulator of maternal and depressive-like behavior after parturition.
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Affiliation(s)
- Hyeongseok Yun
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Eui-Soon Park
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Seunga Choi
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Bongjin Shin
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Jungeun Yu
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Jiyeon Yu
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | | | - Sumi Kim
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Nari Lee
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
| | - Jong-Soon Choi
- Division of Life Science, Korea Basic Science Institute, Daejeon, Korea
| | - Yongwon Choi
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Korea
- * E-mail:
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Hoshino I, Takahashi M, Akutsu Y, Murakami K, Matsumoto Y, Suito H, Sekino N, Komatsu A, Iida K, Suzuki T, Inoue I, Ishige F, Iwatate Y, Matsubara H. Genome-wide ChIP-seq data with a transcriptome analysis reveals the groups of genes regulated by histone demethylase LSD1 inhibition in esophageal squamous cell carcinoma cells. Oncol Lett 2019; 18:872-881. [PMID: 31289565 PMCID: PMC6539443 DOI: 10.3892/ol.2019.10350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 04/29/2019] [Indexed: 12/25/2022] Open
Abstract
Expression of genes is controlled by histone modification, histone acetylation and methylation, but abnormalities of these modifications have been observed in carcinogenesis and cancer development. The effect of the lysine-specific histone demethylase 1 (LSD1) inhibitor, a demethylating enzyme of histones, is thought to be caused by controlling the expression of genes. The aim of the present study is to elucidate the efficacies of the LSD1 inhibitor on the gene expression of esophageal cancer cell lines using chromatin immunoprecipitation (ChIP)-Seq. A comprehensive analysis of gene expression changes in esophageal squamous cell carcinoma (ESCC) cell lines induced by the LSD1 inhibitor NCL1 was clarified via analysis using microarray. In addition, ChIP-seq analysis was conducted using a SimpleChIP plus Enzymatic Chromatin IP kit. NCL1 strongly suppressed the proliferation of T.Tn and TE2 cells, which are ESCC cell lines, and further induced apoptosis. According to the combinatory analysis of ChIP-seq and microarray, 17 genes were upregulated, and 16 genes were downregulated in both cell lines. The comprehensive gene expression study performed in the present study is considered to be useful for analyzing the mechanism of the antitumor effect of the LSD1 inhibitor in patients with ESCC.
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Affiliation(s)
- Isamu Hoshino
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan.,Division of Gastroenterological Surgery, Chiba Cancer Center, Chuo-ku, Chiba 260-8717, Japan
| | - Masahiko Takahashi
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Yasunori Akutsu
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Kentaro Murakami
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Yasunori Matsumoto
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Hiroshi Suito
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Nobufumi Sekino
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Aki Komatsu
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Keiko Iida
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Takayoshi Suzuki
- Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kita-ku, Kyoto 403-8334, Japan
| | - Itsuro Inoue
- Division of Human Genetics, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Fumitaka Ishige
- Department of Hepatobiliary and Pancreatic Surgery, Chiba Cancer Center, Chuo-ku, Chiba 260-8717, Japan
| | - Yosuke Iwatate
- Department of Hepatobiliary and Pancreatic Surgery, Chiba Cancer Center, Chuo-ku, Chiba 260-8717, Japan
| | - Hisahiro Matsubara
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
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Wu D, Yang N, Xu Y, Wang S, Zhang Y, Sagnelli M, Hui B, Huang Z, Sun L. lncRNA HIF1A Antisense RNA 2 Modulates Trophoblast Cell Invasion and Proliferation through Upregulating PHLDA1 Expression. MOLECULAR THERAPY-NUCLEIC ACIDS 2019; 16:605-615. [PMID: 31085354 PMCID: PMC6517652 DOI: 10.1016/j.omtn.2019.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/12/2019] [Accepted: 04/11/2019] [Indexed: 12/12/2022]
Abstract
Long noncoding RNAs (lncRNAs) have been reported to be involved in various human diseases, and increasing studies have revealed that lncRNAs can play a vital role in preeclampsia (PE). In our study, lncRNA hypoxia-inducible factor 1 alpha (HIF1A) antisense RNA 2 (HIF1A-AS2) was found to be significantly downregulated in placenta tissues of PE patients by quantitative real-time PCR analysis. Moreover, Cell Counting Kit-8 (CCK-8) assays showed that downregulation of HIF1A-AS2 can impede cell proliferation of HTR-8/SVneo and JAR trophoblasts cells. Ectopic overexpression of HIF1A-AS2 can increase the function of trophoblasts cell migration and invasion in vitro. RNA-sequencing (RNA-seq), RNA immunoprecipitation (RIP), and chromatin immunoprecipitation (ChIP) experiments showed that HIF1A-AS2 can recruit lysine-specific demethylase 1 (LSD1) and epigenetically repress pleckstrin homology-like domain, family A, member 1 (PHLDA1) transcription in human trophoblasts cells. In summary, our findings suggest that downregulated HIF1A-AS2 may play a role in the pathogenesis and progression of PE, and has potential as a novel prognostic marker in PE.
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Affiliation(s)
- Dan Wu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China; Department of Neurobiology, Care Science and Society, Karolinska Institutet, Solna 17177, Sweden
| | - Nana Yang
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Yetao Xu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Sailan Wang
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Yuanyuan Zhang
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Matthew Sagnelli
- University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Bingqing Hui
- Department of Oncology, Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, Jiangsu Province, China
| | - Zhenyao Huang
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Lizhou Sun
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.
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37
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da Silva GM, Saavedra V, Ianez RCF, de Sousa EA, Gomes ÁN, Kelner N, Nagai MA, Kowalski LP, Soares FA, Lourenço SV, Coutinho-Camillo CM. Apoptotic signaling in salivary mucoepidermoid carcinoma. Head Neck 2019; 41:2904-2913. [PMID: 30968512 DOI: 10.1002/hed.25763] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 02/20/2019] [Accepted: 03/25/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Mucoepidermoid carcinoma is the most common malignant tumor of salivary glands. Apoptosis plays an important role in organogenesis of glandular structures, and aberrations of apoptotic mechanisms is associated with a wide array of pathologic conditions. METHODS The immunoexpression of proteins associated with apoptosis and proliferation was evaluated in 40 mucoepidermoid carcinoma cases. RESULTS Par-4, Survivin, MUC1, PHLDA1, Fas, and Ki-67 were predominantly expressed in mucoepidermoid carcinoma. FasL was rarely expressed, and Caspase-3 expression was observed in almost 50% of the cases. SPARC expression was associated with low-grade tumors, and Ki-67 expression was associated with lymph node metastasis. Expression of Fas and decreased expression of Ki-67 and Caspase-3 were associated with better overall cancer-specific survival rates. CONCLUSIONS The association of SPARC and Ki-67 expression with pathological features and the association of Fas, Caspase-3, and Ki-67 with survival probabilities suggest that these proteins may be useful prognostic markers for mucoepidermoid carcinoma.
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Affiliation(s)
| | - Victoria Saavedra
- International Research Center, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Renata C F Ianez
- International Research Center, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Elen A de Sousa
- International Research Center, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Ágatha N Gomes
- International Research Center, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Natalie Kelner
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Maria A Nagai
- Discipline of Oncology, Department of Radiology and Oncology, Medical School, University of São Paulo, São Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of São Paulo, São Paulo, Brazil
| | - Luiz P Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Fernando A Soares
- Department of General Pathology, Dental School, University of São Paulo, São Paulo, Brazil.,Pathology Division, Rede D'Or Hospitals Network, São Paulo, Brazil
| | - Silvia V Lourenço
- Department of General Pathology, Dental School, University of São Paulo, São Paulo, Brazil
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38
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Lynn EG, Lhoták Š, Lebeau P, Byun JH, Chen J, Platko K, Shi C, O'Brien RE, Austin RC. 4‐Phenylbutyrate protects against atherosclerotic lesion growth by increasing the expression of HSP25 in macrophages and in the circulation of
Apoe
−/−
mice. FASEB J 2019; 33:8406-8422. [DOI: 10.1096/fj.201802293rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Edward G. Lynn
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Šárka Lhoták
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Paul Lebeau
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Jae Hyun Byun
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Jack Chen
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Khrystyna Platko
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
| | - Chunhua Shi
- Department of Cardiac SciencesLibin Cardiovascular Institute of AlbertaCumming School of MedicineUniversity of Calgary Calgary Alberta Canada
| | - R. Edward O'Brien
- Department of Cardiac SciencesLibin Cardiovascular Institute of AlbertaCumming School of MedicineUniversity of Calgary Calgary Alberta Canada
| | - Richard C. Austin
- Division of NephrologyDepartment of MedicineMcMaster UniversityThe Research Institute of St. Joe's HamiltonHamilton Centre for Kidney Research Hamilton Ontario Canada
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39
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de Mello Gomes ÁN, Nagai MA, Lourenço SV, Coutinho-Camillo CM. Apoptosis and proliferation during human salivary gland development. J Anat 2019; 234:830-838. [PMID: 30861119 DOI: 10.1111/joa.12970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2019] [Indexed: 01/24/2023] Open
Abstract
Human salivary gland (SG) branching morphogenesis is an intricate mechanism divided into stages, prebud, initial bud, pseudoglandular, canalicular, and terminal bud, to form the final lobular structure of the organ. The coordination of molecular cascades, including cell proliferation and apoptosis, are fundamental to this process. The intrinsic apoptosis pathway appears to be important in the early phases of ductal cavitation and luminisation; however, the role of the extrinsic apoptosis pathway has still to be determined. Questions remain as to whether the latter mechanism participates in the maintenance of the ductal lumen; therefore, the present study investigated the expression of proteins Prostate apoptosis response-4 (Par-4), Fas cell surface death receptor (Fas), Fas ligand (FasL), pleckstrin homology-like domain family A member 1 (PHLDA1), caspase-3, B-cell CLL/lymphoma 2 (Bcl-2), survivin, Ki-67, mucin 1 (MUC1), and secreted protein acidic and cysteine-rich (SPARC) during distinct phases of human SG development (50 specimens). This strategy aimed to draw an immunomorphological map of the proteins involved in apoptosis, cell proliferation, and tissue maturation during the SG branching morphogenesis process. Par-4 was positive at all stages except the pre-acinar phase. Fas and FasL were expressed in few cells. PHLDA1 was expressed in all phases but not in the terminal bud. Bcl-2 expression was mainly negative (expressed in few cells). Survivin showed a cytoplasmic expression pattern in the early phases of development, which changed to a predominantly nuclear expression during development into more differentiated structures. Ki-67 was expressed mainly at the pseudoglandular stage. MUC1 was positive in the pseudoglandular stage with a cytoplasmic pattern in regions of early luminal opening. Immunostaining for SPARC and caspase-3 was negative. Our results suggest that proteins associated with the regulation of extrinsic and intrinsic apoptosis contribute to apoptosis during specific phases of the early formation of SGs in humans.
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Affiliation(s)
| | - Maria Aparecida Nagai
- Discipline of Oncology, Department of Radiology and Oncology, Medical School, University of São Paulo, São Paulo, Brazil.,Laboratory of Molecular Genetics, Center for Translational Research in Oncology, Cancer Institute of São Paulo, São Paulo, Brazil
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40
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Lee SY, Park YK, Yoon CH, Kim K, Kim KC. Meta-analysis of gene expression profiles in long-term non-progressors infected with HIV-1. BMC Med Genomics 2019; 12:3. [PMID: 30626383 PMCID: PMC6325803 DOI: 10.1186/s12920-018-0443-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/03/2018] [Indexed: 02/08/2023] Open
Abstract
Background In the absence of antiretroviral treatments (ARTs), a small group of individuals infected with HIV, including long-term non-progressors (LTNPs) who maintain high levels of CD4+ T cells for more than 7–10 years in the absence of ART and in particular a subgroup of LTNPs, elite controllers (ECs), who have low levels of viremia, remain clinically and/or immunologically stable for years. However, the mechanism of stable disease progression in LTNPs and ECs needs to be elucidated to help those infected with HIV-1 remain healthy. In this study, to identify the characteristics of gene expression profiles and biomarkers in LTNPs, we performed a meta-analysis using multiple gene expression profiles among LTNPs, individuals infected with HIV-1 without ART, individuals infected with HIV-1 with ART, and healthy controls. Methods The gene expression profiles obtained from the Gene Expression Omnibus (GEO) microarray data repositories were classified into three groups: LTNPs versus healthy controls (first group, 3 studies), LTNPs versus patients infected with HIV-1 without ART (second group, 3 studies), and LTNPs versus patients infected with HIV-1 with ART (third group, 3 studies). In addition, we considered a fourth group, patients infected with HIV-1 without ART versus healthy controls (3 studies), to exclude genes associated with HIV-1 infection in the three groups. For each group, we performed a meta-analysis using the RankProd method to identify and compare the differentially expressed genes (DEGs) in the three groups. Results We identified the 14 common DEGs in the three groups when comparing them with each other. Most belonged to immune responses, antigen processing and presentation, the interferon-gamma-mediated signaling pathway, and T cell co-stimulation. Of these DEGs, PHLDA1 was up-regulated and ACTB and ACTG1 were down-regulated in all three groups. However, the rest of the up- or down-regulated genes were discordant in the three groups. Additionally, ACTB and ACTG1 are known to inhibit viral assembly and production, and THBS1 is known to inhibit HIV-1 infection. Conclusions These results suggest that significant genes identified in a meta-analysis provide clues to the cause of delayed disease progression and give a deeper understanding of HIV pathogenesis in LTNPs. Electronic supplementary material The online version of this article (10.1186/s12920-018-0443-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sun Young Lee
- Division of Viral Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, 187 Osongsaengmyeong 2-ro, Cheongju, Chungbuk, 28159, Republic of Korea
| | - Yong Kwang Park
- Division of Viral Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, 187 Osongsaengmyeong 2-ro, Cheongju, Chungbuk, 28159, Republic of Korea
| | - Cheol-Hee Yoon
- Division of Viral Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, 187 Osongsaengmyeong 2-ro, Cheongju, Chungbuk, 28159, Republic of Korea
| | - Kisoon Kim
- Division of Viral Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, 187 Osongsaengmyeong 2-ro, Cheongju, Chungbuk, 28159, Republic of Korea
| | - Kyung-Chang Kim
- Division of Viral Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, 187 Osongsaengmyeong 2-ro, Cheongju, Chungbuk, 28159, Republic of Korea.
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41
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Chen Y, Takikawa M, Tsutsumi S, Yamaguchi Y, Okabe A, Shimada M, Kawase T, Sada A, Ezawa I, Takano Y, Nagata K, Suzuki Y, Semba K, Aburatani H, Ohki R. PHLDA1, another PHLDA family protein that inhibits Akt. Cancer Sci 2018; 109:3532-3542. [PMID: 30207029 PMCID: PMC6215895 DOI: 10.1111/cas.13796] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 09/05/2018] [Accepted: 09/08/2018] [Indexed: 01/07/2023] Open
Abstract
The PHLDA family (pleckstrin homology‐like domain family) of genes consists of 3 members: PHLDA1, 2, and 3. Both PHLDA3 and PHLDA2 are phosphatidylinositol (PIP) binding proteins and function as repressors of Akt. They have tumor suppressive functions, mainly through Akt inhibition. Several reports suggest that PHLDA1 also has a tumor suppressive function; however, the precise molecular functions of PHLDA1 remain to be elucidated. Through a comprehensive screen for p53 target genes, we identified PHLDA1 as a novel p53 target, and we show that PHLDA1 has the ability to repress Akt in a manner similar to that of PHLDA3 and PHLDA2. PHLDA1 has a so‐called split PH domain in which the PH domain is divided into an N‐terminal (β sheets 1‐3) and a C‐terminal (β sheets 4‐7 and an α‐helix) portions. We show that the PH domain of PHLDA1 is responsible for its localization to the plasma membrane and binding to phosphatidylinositol. We also show that the function of the PH domain is essential for Akt repression. In addition, PHLDA1 expression analysis suggests that PHLDA1 has a tumor suppressive function in breast and ovarian cancers.
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Affiliation(s)
- Yu Chen
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Masahiro Takikawa
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Shuichi Tsutsumi
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Yoko Yamaguchi
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan.,Faculty of Science, Department of Biomolecular Science, Toho University, Chiba, Japan
| | - Atsushi Okabe
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.,Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Mayuna Shimada
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Tatsuya Kawase
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Akane Sada
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Issei Ezawa
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Yuhei Takano
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kisaburo Nagata
- Faculty of Science, Department of Biomolecular Science, Toho University, Chiba, Japan
| | - Yutaka Suzuki
- Laboratory of Systems Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Kentaro Semba
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Rieko Ohki
- Laboratory of Fundamental Oncology, National Cancer Center Research Institute, Tokyo, Japan
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42
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Mostafa NA, Assaf M, Elhakim S, Abdel-Halim MRE, El-Nabarawy E, Gharib K. Diagnostic accuracy of immunohistochemical markers in differentiation between basal cell carcinoma and trichoepithelioma in small biopsy specimens. J Cutan Pathol 2018; 45:807-816. [DOI: 10.1111/cup.13305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 05/06/2018] [Accepted: 06/13/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Naglaa A. Mostafa
- Pathology Department; Faculty of Medicine, Zagazig University; Zagazig Egypt
| | - Magda Assaf
- Pathology Department; Faculty of Medicine, Zagazig University; Zagazig Egypt
| | - Sami Elhakim
- Pathology Department; Faculty of Medicine, Al-Azhar University; Cairo Egypt
| | | | - Eman El-Nabarawy
- Dermatology Department; Faculty of Medicine, Cairo University; Giza Egypt
| | - Khaled Gharib
- Dermatology Department; Faculty of Medicine, Zagazig University; Zagazig Egypt
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43
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Wang J, Wang F, Zhu J, Song M, An J, Li W. Transcriptome Profiling Reveals PHLDA1 as a Novel Molecular Marker for Ischemic Cardiomyopathy. J Mol Neurosci 2018; 65:102-109. [PMID: 29736818 PMCID: PMC5978804 DOI: 10.1007/s12031-018-1066-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 04/11/2018] [Indexed: 12/13/2022]
Abstract
Ischemic cardiomyopathy (ICM) represents a worldwide health issue owning to its high sudden death rate. Easy diagnosis and effective treatment of ICM are still lacking. Identification of novel molecular markers will help illustrate the pathophysiology of ICM and facilitate its diagnosis and targeted treatment. Transcription profiling could be an easy and efficient way for identifying new markers. However, the mega data in the available database may contain a large number of false-positive hits. To identify the true marker for ICM, we systematically compared available microarray datasets in the GEO database and identified 26 genes that are shared by all datasets. We further verified the expression pattern of these 26 genes in ICM rat model. Only 12 genes show significant differential expression in our animal model. Among them, we focused on PHLDA1, a well-documented pro-apoptotic factor. Expression of PHLDA1 was elevated in both ischemic cardiac cell lines and in rat model. Overexpression of PHLDA1 promotes apoptosis of cardiac muscle cell. Meanwhile, PHLDA1 not only inhibited AKT pathway, but also activated p53 pathway. We thus confirmed PHLDA1 as a true molecular marker for ICM.
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Affiliation(s)
- Jinhui Wang
- Clinical Laboratory, The First Hospital of Harbin, Harbin, Heilongjiang Province, China
| | - Feifei Wang
- Clinical Laboratory, The First Hospital of Harbin, Harbin, Heilongjiang Province, China
| | - Jingbin Zhu
- Orthopedics, The First Hospital of Harbin, Harbin, Heilongjiang Province, China
| | - Mei Song
- Clinical Laboratory, The First Hospital of Harbin, Harbin, Heilongjiang Province, China
| | - Jinghong An
- Clinical Laboratory, The First Hospital of Harbin, Harbin, Heilongjiang Province, China
| | - Weimin Li
- Cardiology, The First Hospital of Harbin, Harbin, Heilongjiang Province, China.
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44
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Lee HJ, Jedrychowski MP, Vinayagam A, Wu N, Shyh-Chang N, Hu Y, Min-Wen C, Moore JK, Asara JM, Lyssiotis CA, Perrimon N, Gygi SP, Cantley LC, Kirschner MW. Proteomic and Metabolomic Characterization of a Mammalian Cellular Transition from Quiescence to Proliferation. Cell Rep 2018; 20:721-736. [PMID: 28723573 DOI: 10.1016/j.celrep.2017.06.074] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/22/2017] [Accepted: 06/25/2017] [Indexed: 12/28/2022] Open
Abstract
There exist similarities and differences in metabolism and physiology between normal proliferative cells and tumor cells. Once a cell enters the cell cycle, metabolic machinery is engaged to facilitate various processes. The kinetics and regulation of these metabolic changes have not been properly evaluated. To correlate the orchestration of these processes with the cell cycle, we analyzed the transition from quiescence to proliferation of a non-malignant murine pro-B lymphocyte cell line in response to IL-3. Using multiplex mass-spectrometry-based proteomics, we show that the transition to proliferation shares features generally attributed to cancer cells: upregulation of glycolysis, lipid metabolism, amino-acid synthesis, and nucleotide synthesis and downregulation of oxidative phosphorylation and the urea cycle. Furthermore, metabolomic profiling of this transition reveals similarities to cancer-related metabolic pathways. In particular, we find that methionine is consumed at a higher rate than that of other essential amino acids, with a potential link to maintenance of the epigenome.
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Affiliation(s)
- Ho-Joon Lee
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | | | | | - Ning Wu
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, MI 49503, USA
| | - Ng Shyh-Chang
- Stem Cell & Regenerative Biology, Genome Institute of Singapore, S138672 Singapore, Singapore
| | - Yanhui Hu
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Chua Min-Wen
- Stem Cell & Regenerative Biology, Genome Institute of Singapore, S138672 Singapore, Singapore
| | - Jodene K Moore
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - John M Asara
- Division of Signal Transduction, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, USA
| | - Costas A Lyssiotis
- Division of Gastroenterology, Department of Molecular and Integrative Physiology and Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Norbert Perrimon
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Steven P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Lewis C Cantley
- Meyer Cancer Center, Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - Marc W Kirschner
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA.
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45
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Fearon AE, Carter EP, Clayton NS, Wilkes EH, Baker AM, Kapitonova E, Bakhouche BA, Tanner Y, Wang J, Gadaleta E, Chelala C, Moore KM, Marshall JF, Chupin J, Schmid P, Jones JL, Lockley M, Cutillas PR, Grose RP. PHLDA1 Mediates Drug Resistance in Receptor Tyrosine Kinase-Driven Cancer. Cell Rep 2018; 22:2469-2481. [PMID: 29490281 PMCID: PMC5848852 DOI: 10.1016/j.celrep.2018.02.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 11/09/2017] [Accepted: 02/06/2018] [Indexed: 11/09/2022] Open
Abstract
Development of resistance causes failure of drugs targeting receptor tyrosine kinase (RTK) networks and represents a critical challenge for precision medicine. Here, we show that PHLDA1 downregulation is critical to acquisition and maintenance of drug resistance in RTK-driven cancer. Using fibroblast growth factor receptor (FGFR) inhibition in endometrial cancer cells, we identify an Akt-driven compensatory mechanism underpinned by downregulation of PHLDA1. We demonstrate broad clinical relevance of our findings, showing that PHLDA1 downregulation also occurs in response to RTK-targeted therapy in breast and renal cancer patients, as well as following trastuzumab treatment in HER2+ breast cancer cells. Crucially, knockdown of PHLDA1 alone was sufficient to confer de novo resistance to RTK inhibitors and induction of PHLDA1 expression re-sensitized drug-resistant cancer cells to targeted therapies, identifying PHLDA1 as a biomarker for drug response and highlighting the potential of PHLDA1 reactivation as a means of circumventing drug resistance.
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Affiliation(s)
- Abbie E Fearon
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Edward P Carter
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Natasha S Clayton
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Edmund H Wilkes
- Integrative Cell Signalling and Proteomics, Centre for Haemato-Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Ann-Marie Baker
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Ekaterina Kapitonova
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Bakhouche A Bakhouche
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Yasmine Tanner
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Jun Wang
- Centre for Molecular Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Emanuela Gadaleta
- Centre for Molecular Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Claude Chelala
- Centre for Molecular Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Kate M Moore
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - John F Marshall
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Juliette Chupin
- Centre for Experimental Cancer Medicine, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Peter Schmid
- Centre for Experimental Cancer Medicine, Barts Cancer Institute, London EC1M 6BQ, UK
| | - J Louise Jones
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK
| | - Michelle Lockley
- Centre for Molecular Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Pedro R Cutillas
- Integrative Cell Signalling and Proteomics, Centre for Haemato-Oncology, Barts Cancer Institute, London EC1M 6BQ, UK
| | - Richard P Grose
- Centre for Tumour Biology, Barts Cancer Institute-a CRUK Centre of Excellence, Queen Mary University of London, London EC1M 6BQ, UK.
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Magi S, Iwamoto K, Yumoto N, Hiroshima M, Nagashima T, Ohki R, Garcia-Munoz A, Volinsky N, Von Kriegsheim A, Sako Y, Takahashi K, Kimura S, Kholodenko BN, Okada-Hatakeyama M. Transcriptionally inducible Pleckstrin homology-like domain, family A, member 1, attenuates ErbB receptor activity by inhibiting receptor oligomerization. J Biol Chem 2018; 293:2206-2218. [PMID: 29233889 PMCID: PMC5808779 DOI: 10.1074/jbc.m117.778399] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 11/16/2017] [Indexed: 12/30/2022] Open
Abstract
Feedback control is a key mechanism in signal transduction, intimately involved in regulating the outcome of the cellular response. Here, we report a novel mechanism by which PHLDA1, Pleckstrin homology-like domain, family A, member 1, negatively regulates ErbB receptor signaling by inhibition of receptor oligomerization. We have found that the ErbB3 ligand, heregulin, induces PHILDA1 expression in MCF-7 cells. Transcriptionally-induced PHLDA1 protein directly binds to ErbB3, whereas knockdown of PHLDA1 increases complex formation between ErbB3 and ErbB2. To provide insight into the mechanism for our time-course and single-cell experimental observations, we performed a systematic computational search of network topologies of the mathematical models based on receptor dimer-tetramer formation in the ErbB activation processes. Our results indicate that only a model in which PHLDA1 inhibits formation of both dimers and tetramer can explain the experimental data. Predictions made from this model were further validated by single-molecule imaging experiments. Our studies suggest a unique regulatory feature of PHLDA1 to inhibit the ErbB receptor oligomerization process and thereby control the activity of receptor signaling network.
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Affiliation(s)
- Shigeyuki Magi
- From the Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
- the Laboratory of Cell Systems, Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazunari Iwamoto
- From the Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
- the Laboratory of Cell Systems, Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- the Laboratory for Biochemical Simulation and
| | - Noriko Yumoto
- From the Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Michio Hiroshima
- the Cellular Informatics Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Laboratory for Cell Signaling Dynamics, RIKEN Quantitative Biology Center (QBiC), 6-2-3, Furuedai, Suita, Osaka 565-0874, Japan
| | - Takeshi Nagashima
- the Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Rieko Ohki
- the Division of Rare Cancer Research, National Cancer Center Research Institute, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | | | | | | | - Yasushi Sako
- the Cellular Informatics Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | | | - Shuhei Kimura
- the Graduate School of Engineering, Tottori University 4-101, Koyama-minami, Tottori 680-8552, Japan
| | - Boris N Kholodenko
- Systems Biology Ireland,
- Conway Institute of Biomolecular and Biomedical Research, and
- School of Medicine and Medical Science, University College Dublin, Belfield, Dublin 4, Ireland, and
| | - Mariko Okada-Hatakeyama
- From the Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan,
- the Laboratory of Cell Systems, Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
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47
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Coleman SK, Cao AW, Rebalka IA, Gyulay G, Chambers PJ, Tupling AR, Austin RC, Hawke TJ. The Pleckstrin homology like domain family member, TDAG51, is temporally regulated during skeletal muscle regeneration. Biochem Biophys Res Commun 2017; 495:499-505. [PMID: 29127005 DOI: 10.1016/j.bbrc.2017.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 11/02/2017] [Indexed: 01/23/2023]
Abstract
The capacity for skeletal muscle to repair from daily insults as well as larger injuries is a vital component to maintaining muscle health over our lifetime. Given the importance of skeletal muscle for our physical and metabolic well-being, identifying novel factors mediating the growth and repair of skeletal muscle will thus build our foundational knowledge and help lead to potential therapeutic avenues for muscle wasting disorders. To that end, we investigated the expression of T-cell death associated gene 51 (TDAG51) during skeletal muscle repair and studied the response of TDAG51 deficient (TDAG51-/-) mice to chemically-induced muscle damage. TDAG51 mRNA and protein expression within uninjured skeletal muscle is almost undetectable but, in response to chemically-induced muscle damage, protein levels increase by 5 days post-injury and remain elevated for up to 10 days of regeneration. To determine the impact of TDAG51 deletion on skeletal muscle form and function, we compared adult male TDAG51-/- mice with age-matched wild-type (WT) mice. Body and muscle mass were not different between the two groups, however, in situ muscle testing demonstrated a significant reduction in force production both before and after fatiguing contractions in TDAG51-/- mice. During the early phases of the regenerative process (5 days post-injury), TDAG51-/- muscles display a significantly larger area of degenerating muscle tissue concomitant with significantly less regenerating area compared to WT (as demonstrated by embryonic myosin heavy chain expression). Despite these early deficits in regeneration, TDAG51-/- muscles displayed no morphological deficits by 10 days post injury compared to WT mice. Taken together, the data presented herein demonstrate TDAG51 expression to be upregulated in damaged skeletal muscle and its absence attenuates the early phases of muscle regeneration.
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Affiliation(s)
- Samantha K Coleman
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Andrew W Cao
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Irena A Rebalka
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Gabriel Gyulay
- Department of Medicine, Division of Nephrology, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Paige J Chambers
- Department of Kinesiology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - A Russell Tupling
- Department of Kinesiology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Richard C Austin
- Department of Medicine, Division of Nephrology, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Thomas J Hawke
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada.
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48
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Bonatto N, Carlini MJ, de Bessa Garcia SA, Nagai MA. PHLDA1 (pleckstrin homology-like domain, family A, member 1) knockdown promotes migration and invasion of MCF10A breast epithelial cells. Cell Adh Migr 2017. [PMID: 28640659 DOI: 10.1080/19336918.2017.1313382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
PHLDA1 (pleckstrin homology-like domain, family A, member 1) is a multifunctional protein that plays distinct roles in several biological processes including cell death and therefore its altered expression has been identified in different types of cancer. Progressively loss of PHLDA1 was found in primary and metastatic melanoma while its overexpression was reported in intestinal and pancreatic tumors. Previous work from our group showed that negative expression of PHLDA1 protein was a strong predictor of poor prognosis for breast cancer disease. However, the function of PHLDA1 in mammary epithelial cells and the tumorigenic process of the breast is unclear. To dissect PHLDA1 role in human breast epithelial cells, we generated a clone of MCF10A cells with stable knockdown of PHLDA1 and performed functional studies. To achieve reduced PHLDA1 expression we used shRNA plasmid transfection and then changes in cell morphology and biological behavior were assessed. We found that PHLDA1 downregulation induced marked morphological alterations in MCF10A cells, such as changes in cell-to-cell adhesion pattern and cytoskeleton reorganization. Regarding cell behavior, MCF10A cells with reduced expression of PHLDA1 showed higher proliferative rate and migration ability in comparison with control cells. We also found that MCF10A cells with PHLDA1 knockdown acquired invasive properties, as evaluated by transwell Matrigel invasion assay and showed enhanced colony-forming ability and irregular growth in low attachment condition. Altogether, our results indicate that PHLDA1 downregulation in MCF10A cells leads to morphological changes and a more aggressive behavior.
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Affiliation(s)
- Naieli Bonatto
- a Discipline of Oncology, Department of Radiology and Oncology , Faculty of Medicine, University of São Paulo , São Paulo , Brazil.,b Laboratory of Molecular Genetics , Center for Translational Research in Oncology, Cancer Institute of São Paulo , São Paulo , Brazil
| | - Maria José Carlini
- a Discipline of Oncology, Department of Radiology and Oncology , Faculty of Medicine, University of São Paulo , São Paulo , Brazil.,b Laboratory of Molecular Genetics , Center for Translational Research in Oncology, Cancer Institute of São Paulo , São Paulo , Brazil
| | - Simone Aparecida de Bessa Garcia
- a Discipline of Oncology, Department of Radiology and Oncology , Faculty of Medicine, University of São Paulo , São Paulo , Brazil.,b Laboratory of Molecular Genetics , Center for Translational Research in Oncology, Cancer Institute of São Paulo , São Paulo , Brazil
| | - Maria Aparecida Nagai
- a Discipline of Oncology, Department of Radiology and Oncology , Faculty of Medicine, University of São Paulo , São Paulo , Brazil.,b Laboratory of Molecular Genetics , Center for Translational Research in Oncology, Cancer Institute of São Paulo , São Paulo , Brazil
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49
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Lyu JH, Huang B, Park DW, Baek SH. Regulation of PHLDA1 Expression by JAK2-ERK1/2-STAT3 Signaling Pathway. J Cell Biochem 2016; 117:483-90. [PMID: 26239656 DOI: 10.1002/jcb.25296] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 07/30/2015] [Indexed: 02/05/2023]
Abstract
Toll-like receptor 2 (TLR2)-mediated signaling cascades and gene regulation are mainly involved in diseases, such as immunity and inflammation. In this study, microarray analysis was performed using bone marrow-derived macrophages (BMDM) and Raw 264.7 cells to identify novel proteins involved in the TLR2-mediated cellular response. We found that pleckstrin homology-like domain family, member 1 (PHLDA1) is a novel gene up-regulated by TLR2 stimulation and determined the unique signaling pathway for its expression. Treatment with TLR2 agonist Pam3 CSK4 increased mRNA, protein, and fluorescence staining of PHLDA1. Induction of PHLDA1 by TLR2 stimulation disappeared from TLR2 KO mice-derived BMDM. Among janus kinase (JAK) family members, JAK2 was involved in TLR2-stimulated PHLDA1 expression. Signal transducer and activator of transcription 3 (STAT3) also participated in PHLDA1 expression downstream of the JAK2. Interestingly, ERK1/2 was an intermediate between JAK2 and STAT3. In silico analysis revealed the presence of highly conserved γ-activated sites within mouse PHLDA1 promoter and confirmed the JAK2-STAT3 pathway is important to Pam3 CSK4 -induced PHLDA1 transcription. These findings suggest that the JAK2-ERK1/2-STAT3 pathway is an important signaling pathway for PHLDA1 expression and that these proteins may play a critical role in eliciting TLR2-mediated immune and inflammatory response.
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Affiliation(s)
- Ji Hyo Lyu
- Department of Biochemistry and Molecular Biology, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 705-703, South Korea
| | - Bin Huang
- Department of Biochemistry and Molecular Biology, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 705-703, South Korea
| | - Dae-Weon Park
- Department of Biochemistry and Molecular Biology, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 705-703, South Korea
| | - Suk-Hwan Baek
- Department of Biochemistry and Molecular Biology, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 705-703, South Korea
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50
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Ren L, Mendoza A, Zhu J, Briggs JW, Halsey C, Hong ES, Burkett SS, Morrow J, Lizardo MM, Osborne T, Li SQ, Luu HH, Meltzer P, Khanna C. Characterization of the metastatic phenotype of a panel of established osteosarcoma cells. Oncotarget 2016; 6:29469-81. [PMID: 26320182 PMCID: PMC4745740 DOI: 10.18632/oncotarget.5177] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/25/2015] [Indexed: 11/25/2022] Open
Abstract
Osteosarcoma (OS) is the most common bone tumor in pediatric patients. Metastasis is a major cause of mortality and morbidity. The rarity of this disease coupled with the challenges of drug development for metastatic cancers have slowed the delivery of improvements in long-term outcomes for these patients. In this study, we collected 18 OS cell lines, confirmed their expression of bone markers and complex karyotypes, and characterized their in vivo tumorgenicity and metastatic potential. Since prior reports included conflicting descriptions of the metastatic and in vivo phenotypes of these models, there was a need for a comparative assessment of metastatic phenotypes using identical procedures in the hands of a single investigative group. We expect that this single characterization will accelerate the study of this metastatic cancer. Using these models we evaluated the expression of six previously reported metastasis-related OS genes. Ezrin was the only gene consistently differentially expressed in all the pairs of high/low metatstatic OS cells. We then used a subtractive gene expression approach of the high and low human metastatic cells to identify novel genes that may be involved in OS metastasis. PHLDA1 (pleckstrin homology-like domain, family A) was identified as one of the genes more highly expressed in the high metastatic compared to low metastatic cells. Knocking down PHLDA1 with siRNA or shRNA resulted in down regulation of the activities of MAPKs (ERK1/2), c-Jun N-terminal kinases (JNK), and p38 mitogen-activated protein kinases (MAPKs). Reducing the expression of PHLDA1 also delayed OS metastasis progression in mouse xenograft models.
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Affiliation(s)
- Ling Ren
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Arnulfo Mendoza
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Jack Zhu
- Genetic Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Joseph W Briggs
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Charles Halsey
- Molecular Pathology Unit, Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, Maryland, USA
| | - Ellen S Hong
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Sandra S Burkett
- Comparative Molecular Cytogenetics Core Facility, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - James Morrow
- School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Michael M Lizardo
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Tanasa Osborne
- National Institute of Environmental Health, Research Triangle Park, North Carolina, USA
| | - Samuel Q Li
- School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Hue H Luu
- Department of Orthopedic Surgery & Rehabilitation Medicine, University of Chicago, Medicine & Biological Sciences, Chicago, USA
| | - Paul Meltzer
- Genetic Branch, National Cancer Institute, Bethesda, Maryland, USA
| | - Chand Khanna
- Molecular Oncology Section - Metastasis Biology Group, Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland, USA
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