Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice
Inhibition of HIF-prolyl hydroxylases (PHD1, PHD2, and PHD3) causes the stabilization of hypoxia-inducible factor-1α and -2α (HIF-1α and HIF-2α) to regulate various cell signaling pathways. Hypoxia-inducible factor (HIF) is crucial in regulating signal responses mediated by hypoxia. HIF regulates th...
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2025-03-01
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| author | Mahesh Thirunavukkarasu Seetur R. Pradeep Babatunde Oriowo Sue Ting Lim Monica Maloney Shayan Ahmed Nicole Taylor David M. Russell Pavayee Socrates Ethan Batko Matan Berkovsky John Alexander Palesty Nilanjana Maulik |
| author_facet | Mahesh Thirunavukkarasu Seetur R. Pradeep Babatunde Oriowo Sue Ting Lim Monica Maloney Shayan Ahmed Nicole Taylor David M. Russell Pavayee Socrates Ethan Batko Matan Berkovsky John Alexander Palesty Nilanjana Maulik |
| author_sort | Mahesh Thirunavukkarasu |
| collection | DOAJ |
| description | Inhibition of HIF-prolyl hydroxylases (PHD1, PHD2, and PHD3) causes the stabilization of hypoxia-inducible factor-1α and -2α (HIF-1α and HIF-2α) to regulate various cell signaling pathways. Hypoxia-inducible factor (HIF) is crucial in regulating signal responses mediated by hypoxia. HIF regulates the transcription of many genes involved in the response to hypoxia and ischemic insult. Our current work investigates the protective effects of PHD1 knockout in mice against myocardial infarction. <b>Study Design:</b> Myocardial infarction (MI) was induced by left anterior descending coronary artery (LAD) ligation (8–12-week-old mice) in both wild-type (WT) and PHD1 knockout (PHD1<sup>−/−</sup>) mice. WT sham (S) and PHD1<sup>−/−</sup>S group mice underwent surgery without LAD ligation. Thirty days post-surgery, cardiac functions were measured by echocardiogram. Mice in all the groups were euthanized at various time points for tissue collection post-MI 8 h (gel shift and microarray analysis), 4 days (Western blot analysis), 7 days (blood vessel density), or 30 days (histological analysis). For microarray analysis, WTMI and PHD1<sup>−/−</sup>MI group mices’ heart tissue was used for RNA isolation, then hybridization to a GeneChip™ Mouse Gene 1.0 ST Array as per the manufacturer’s instructions. Bioinformatic analysis was performed using the transcriptome analysis console (TAC) to generate a list of differentially regulated genes, followed by ingenuity pathway analysis. <b>Results:</b> The study findings revealed a significant increase in vessel density (capillary and arteriolar density) in the PHD1<sup>−/−</sup>MI mice compared to those with WTMI. The echocardiographic examination demonstrated that the PHD1<sup>−/−</sup>MI mice group had an increased ejection fraction and fractional shortening than the WT mice 30 days post-MI. HIF-1α DNA binding activity was higher in PHD1<sup>−/−</sup>MI mice than in WTMI. The Western blot analysis showed a significant increase in the expression of HSPA12B in the PHD1<sup>−/−</sup>MI compared to WTMI mice. Bioinformatic analysis using TAC software, Version 4.0.2.15 (1.5 fold, <i>p</i> < 0.05) showed 174 differentially regulated genes. <b>Conclusions:</b> In conclusion, our study showed PHD1 knockout activates several important molecules and signaling pathways, resulting in increased angiogenesis and cardioprotection against myocardial infarction. |
| format | Article |
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| spelling | doaj-art-04f4d6301d054843ab5ec517b649420e2025-08-20T02:11:22ZengMDPI AGCells2073-44092025-03-0114642310.3390/cells14060423Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in MiceMahesh Thirunavukkarasu0Seetur R. Pradeep1Babatunde Oriowo2Sue Ting Lim3Monica Maloney4Shayan Ahmed5Nicole Taylor6David M. Russell7Pavayee Socrates8Ethan Batko9Matan Berkovsky10John Alexander Palesty11Nilanjana Maulik12Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAStanley J. Dudrick, Department of Surgery, Trinity Health of New England—Saint Mary’s Hospital, Waterbury, CT 06706, USAMolecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, UConn Health, Farmington, CT 06030, USAInhibition of HIF-prolyl hydroxylases (PHD1, PHD2, and PHD3) causes the stabilization of hypoxia-inducible factor-1α and -2α (HIF-1α and HIF-2α) to regulate various cell signaling pathways. Hypoxia-inducible factor (HIF) is crucial in regulating signal responses mediated by hypoxia. HIF regulates the transcription of many genes involved in the response to hypoxia and ischemic insult. Our current work investigates the protective effects of PHD1 knockout in mice against myocardial infarction. <b>Study Design:</b> Myocardial infarction (MI) was induced by left anterior descending coronary artery (LAD) ligation (8–12-week-old mice) in both wild-type (WT) and PHD1 knockout (PHD1<sup>−/−</sup>) mice. WT sham (S) and PHD1<sup>−/−</sup>S group mice underwent surgery without LAD ligation. Thirty days post-surgery, cardiac functions were measured by echocardiogram. Mice in all the groups were euthanized at various time points for tissue collection post-MI 8 h (gel shift and microarray analysis), 4 days (Western blot analysis), 7 days (blood vessel density), or 30 days (histological analysis). For microarray analysis, WTMI and PHD1<sup>−/−</sup>MI group mices’ heart tissue was used for RNA isolation, then hybridization to a GeneChip™ Mouse Gene 1.0 ST Array as per the manufacturer’s instructions. Bioinformatic analysis was performed using the transcriptome analysis console (TAC) to generate a list of differentially regulated genes, followed by ingenuity pathway analysis. <b>Results:</b> The study findings revealed a significant increase in vessel density (capillary and arteriolar density) in the PHD1<sup>−/−</sup>MI mice compared to those with WTMI. The echocardiographic examination demonstrated that the PHD1<sup>−/−</sup>MI mice group had an increased ejection fraction and fractional shortening than the WT mice 30 days post-MI. HIF-1α DNA binding activity was higher in PHD1<sup>−/−</sup>MI mice than in WTMI. The Western blot analysis showed a significant increase in the expression of HSPA12B in the PHD1<sup>−/−</sup>MI compared to WTMI mice. Bioinformatic analysis using TAC software, Version 4.0.2.15 (1.5 fold, <i>p</i> < 0.05) showed 174 differentially regulated genes. <b>Conclusions:</b> In conclusion, our study showed PHD1 knockout activates several important molecules and signaling pathways, resulting in increased angiogenesis and cardioprotection against myocardial infarction.https://www.mdpi.com/2073-4409/14/6/423prolyl hydroxylase-1myocardial infarctionHIF-1αcardiac functionspathway analysis |
| spellingShingle | Mahesh Thirunavukkarasu Seetur R. Pradeep Babatunde Oriowo Sue Ting Lim Monica Maloney Shayan Ahmed Nicole Taylor David M. Russell Pavayee Socrates Ethan Batko Matan Berkovsky John Alexander Palesty Nilanjana Maulik Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice Cells prolyl hydroxylase-1 myocardial infarction HIF-1α cardiac functions pathway analysis |
| title | Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice |
| title_full | Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice |
| title_fullStr | Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice |
| title_full_unstemmed | Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice |
| title_short | Stabilization of Transcription Factor, HIF-1α by Prolylhydroxylase 1 Knockout Reduces Cardiac Injury After Myocardial Infarction in Mice |
| title_sort | stabilization of transcription factor hif 1α by prolylhydroxylase 1 knockout reduces cardiac injury after myocardial infarction in mice |
| topic | prolyl hydroxylase-1 myocardial infarction HIF-1α cardiac functions pathway analysis |
| url | https://www.mdpi.com/2073-4409/14/6/423 |
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