1
|
Zhang K, Zhang Y, Chen C, Yuan Y, Jiang X, Yuan X, Wang Y. miR-139-5p mediates the palmitate-induced inhibition of insulin secretion by targeting neuronal pentraxin 1 in INS-1 cells. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1017-1026. [PMID: 34142698 DOI: 10.1093/abbs/gmab082] [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: 11/15/2020] [Indexed: 11/13/2022] Open
Abstract
High fatty acid reduces insulin secretion in pancreatic β-cells and miR-139-5p is increased in diabetic pancreatic tissues and induces islet β-cell apoptosis. However, to date, there is no study exploring whether or not miR-139-5p is involved in high fatty acid-induced insulin secretion. In the present study, INS-1 cells were exposed to different concentrations (0.1, 0.2, and 0.4 mM) of palmitate for different time periods (12, 24, and 48 h). The expression levels of miR-139-5p and neuronal pentraxin 1 (NPTX1) were evaluated by real-time PCR and western blot analysis. The regulation of NPTX1 by miR-139-5p was examined by luciferase assay. Cell transfection was conducted using Lipo8000 or Lipofectamine RNAiMAX. Potassium or glucose-stimulated insulin secretion levels were used to verify the function of miR-139-5p or NPTX1 in insulin secretion. Insulin secretion levels were detected by radioimmunoassay. We found that miR-139-5p was increased in INS-1 cells stimulated with palmitate. In addition, miR-139-5p was also elevated in islets of high-fat diet-fed mice and db/db mice compared to those in islets of normal diet-fed mice and wild-type mice. Knockdown of miR-139-5p could reverse high fatty acid-induced insulin secretion defects in INS-1 cells. Furthermore, we demonstrated that NPTX1 is a target of miR-139-5p. miR-139-5p mediated palmitate-induced insulin secretion defects by targeting NPTX1. Moreover, palmitate treatment declined the expression of NPTX1 and the NPTX1 expression was also decreased in islets of high-fat diet-fed mice and db/db mice. Impaired NPTX1 expression is involved in fatty acid-induced insulin secretion defects. Collectively, our results illustrate that the induction of β-cell insulin secretion defects by fatty acids is mediated, at least in part, by miR-139-5p via downregulation of NPTX1 expression.
Collapse
Affiliation(s)
- Kai Zhang
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, Medical School, Southeast University, Nanjing 210009, China
| | - Yijian Zhang
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing 210009, China
| | - Cheng Chen
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, Medical School, Southeast University, Nanjing 210009, China
| | - Yuexing Yuan
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, Medical School, Southeast University, Nanjing 210009, China
| | - Xiaotian Jiang
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing 210009, China
| | - Xiangjiang Yuan
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing 210009, China
| | - Yao Wang
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, Medical School, Southeast University, Nanjing 210009, China
| |
Collapse
|
2
|
Siri-Angkul N, Dadfar B, Jaleel R, Naushad J, Parambathazhath J, Doye AA, Xie LH, Gwathmey JK. Calcium and Heart Failure: How Did We Get Here and Where Are We Going? Int J Mol Sci 2021; 22:ijms22147392. [PMID: 34299010 PMCID: PMC8306046 DOI: 10.3390/ijms22147392] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 06/23/2021] [Accepted: 06/30/2021] [Indexed: 12/13/2022] Open
Abstract
The occurrence and prevalence of heart failure remain high in the United States as well as globally. One person dies every 30 s from heart disease. Recognizing the importance of heart failure, clinicians and scientists have sought better therapeutic strategies and even cures for end-stage heart failure. This exploration has resulted in many failed clinical trials testing novel classes of pharmaceutical drugs and even gene therapy. As a result, along the way, there have been paradigm shifts toward and away from differing therapeutic approaches. The continued prevalence of death from heart failure, however, clearly demonstrates that the heart is not simply a pump and instead forces us to consider the complexity of simplicity in the pathophysiology of heart failure and reinforces the need to discover new therapeutic approaches.
Collapse
Affiliation(s)
- Natthaphat Siri-Angkul
- Department of Cell Biology and Molecular Medicine, Rutgers University-New Jersey Medical School, Newark, NJ 07103, USA
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Behzad Dadfar
- Department of General Medicine, School of Medicine, Mazandaran University of Medical Sciences, Sari 1471655836, Iran
| | - Riya Jaleel
- School of International Education, Zhengzhou University, Zhengzhou 450001, China
| | - Jazna Naushad
- Weill Cornell Medicine Qatar, Doha P. O. Box 24144, Qatar
| | | | | | - Lai-Hua Xie
- Department of Cell Biology and Molecular Medicine, Rutgers University-New Jersey Medical School, Newark, NJ 07103, USA
| | - Judith K. Gwathmey
- Department of Cell Biology and Molecular Medicine, Rutgers University-New Jersey Medical School, Newark, NJ 07103, USA
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
- Correspondence: ; Tel.: +973-972-2411; Fax: +973-972-7489
| |
Collapse
|
3
|
Formoso K, Susperreguy S, Freichel M, Birnbaumer L. RNA-seq analysis reveals TRPC genes to impact an unexpected number of metabolic and regulatory pathways. Sci Rep 2020; 10:7227. [PMID: 32350291 PMCID: PMC7190874 DOI: 10.1038/s41598-020-61177-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/21/2020] [Indexed: 12/12/2022] Open
Abstract
The seven-member transient receptor potential canonical genes (TRPC1-7) encode cation channels linked to several human diseases. There is little understanding of the participation of each TRPC in each pathology, considering functional redundancy. Also, most of the inhibitors available are not specific. Thus, we developed mice that lack all of the TRPCs and performed a transcriptome analysis in eight tissues. The aim of this research was to address the impact of the absence of all TRPC channels on gene expression. We obtained a total of 4305 differentially expressed genes (DEGs) in at least one tissue where spleen showed the highest number of DEGs (1371). Just 21 genes were modified in all the tissues. Performing a pathway enrichment analysis, we found that many important signaling pathways were modified in more than one tissue, including PI3K (phosphatidylinositol 3-kinase/protein kinase-B) signaling pathway, cytokine-cytokine receptor interaction, extracellular matrix (ECM)-receptor interaction and circadian rhythms. We describe for the first time the changes at the transcriptome level due to the lack of all TRPC proteins in a mouse model and provide a starting point to understand the function of TRPC channels and their possible roles in pathologies.
Collapse
Affiliation(s)
- Karina Formoso
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina
| | - Sebastian Susperreguy
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina
| | - Marc Freichel
- Institute of Physiology and Pathophysiology, Heidelberg University, 69120, Heidelberg, Germany
| | - Lutz Birnbaumer
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina. .,Neurobiology Laboratory, National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, North Carolina, 27709, USA.
| |
Collapse
|