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Babaei-Jadidi R, Kashfi H, Alelwani W, Karimi Bakhtiari A, Kattan SW, Mansouri OA, Mukherjee A, Lobo DN, Nateri AS. Anti-miR-135/SPOCK1 axis antagonizes the influence of metabolism on drug response in intestinal/colon tumour organoids. Oncogenesis 2022; 11:4. [PMID: 35046388 PMCID: PMC8770633 DOI: 10.1038/s41389-021-00376-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 12/07/2021] [Accepted: 12/15/2021] [Indexed: 12/14/2022] Open
Abstract
Little is known about the role of microRNAs (miRNAs) in rewiring the metabolism within tumours and adjacent non-tumour bearing normal tissue and their potential in cancer therapy. This study aimed to investigate the relationship between deregulated miRNAs and metabolic components in murine duodenal polyps and non-polyp-derived organoids (mPOs and mNPOs) from a double-mutant ApcMinFbxw7∆G mouse model of intestinal/colorectal cancer (CRC). We analysed the expression of 373 miRNAs and 12 deregulated metabolic genes in mPOs and mNPOs. Our findings revealed miR-135b might target Spock1. Upregulation of SPOCK1 correlated with advanced stages of CRCs. Knockdown of miR-135b decreased the expression level of SPOCK1, glucose consumption and lactic secretion in CRC patient-derived tumours organoids (CRC tPDOs). Increased SPOCK1 induced by miR-135b overexpression promoted the Warburg effect and consequently antitumour effect of 5-fluorouracil. Thus, combination with miR-135b antisense nucleotides may represent a novel strategy to sensitise CRC to the chemo-reagent based treatment.
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Affiliation(s)
- Roya Babaei-Jadidi
- Cancer Genetics & Stem Cell Group, BioDiscovery Institute, Translational Medical Sciences Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
- Respiratory Medicine, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Hossein Kashfi
- Cancer Genetics & Stem Cell Group, BioDiscovery Institute, Translational Medical Sciences Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Walla Alelwani
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Ashkan Karimi Bakhtiari
- Cancer Genetics & Stem Cell Group, BioDiscovery Institute, Translational Medical Sciences Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Shahad W Kattan
- Cancer Genetics & Stem Cell Group, BioDiscovery Institute, Translational Medical Sciences Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
- Medical Laboratory Department, College of Applied Medical Sciences, Taibah University, Yanbu, Saudi Arabia
| | - Omniah A Mansouri
- Department of Biology, University of Jeddah, College of Science, Jeddah, 21959, Saudi Arabia
| | - Abhik Mukherjee
- Histopathology, BioDiscovery Institute, School of Medicine, University of Nottingham, NG7 2UH, Nottingham, UK
| | - Dileep N Lobo
- Nottingham Digestive Diseases Centre, National Nottingham Digestive Diseases Centre, National Institute for Health Research Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham, UK
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Abdolrahman S Nateri
- Cancer Genetics & Stem Cell Group, BioDiscovery Institute, Translational Medical Sciences Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK.
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Jeoung NH, Rahimi Y, Wu P, Lee WNP, Harris RA. Fasting induces ketoacidosis and hypothermia in PDHK2/PDHK4-double-knockout mice. Biochem J 2012; 443:829-39. [PMID: 22360721 PMCID: PMC4323161 DOI: 10.1042/bj20112197] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The importance of PDHK (pyruvate dehydrogenase kinase) 2 and 4 in regulation of the PDH complex (pyruvate dehydrogenase complex) was assessed in single- and double-knockout mice. PDHK2 deficiency caused higher PDH complex activity and lower blood glucose levels in the fed, but not the fasted, state. PDHK4 deficiency caused similar effects, but only after fasting. Double deficiency intensified these effects in both the fed and fasted states. PDHK2 deficiency had no effect on glucose tolerance, PDHK4 deficiency produced only a modest effect, but double deficiency caused a marked improvement and also induced lower insulin levels and increased insulin sensitivity. In spite of these beneficial effects, the double-knockout mice were more sensitive than wild-type and single-knockout mice to long-term fasting, succumbing to hypoglycaemia, ketoacidosis and hypothermia. Stable isotope flux analysis indicated that hypoglycaemia was due to a reduced rate of gluconeogenesis and that slightly more glucose was converted into ketone bodies in the double-knockout mice. The findings establish that PDHK2 is more important in the fed state, PDHK4 is more important in the fasted state, and survival during long-term fasting depends upon regulation of the PDH complex by both PDHK2 and PDHK4.
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Affiliation(s)
- Nam Ho Jeoung
- Richard Roudebush Veterans Affairs Medical Center, 1481 West Tenth Street, Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, U.S.A
| | - Yasmeen Rahimi
- Richard Roudebush Veterans Affairs Medical Center, 1481 West Tenth Street, Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, U.S.A
| | - Pengfei Wu
- Richard Roudebush Veterans Affairs Medical Center, 1481 West Tenth Street, Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, U.S.A
| | - W. N. Paul Lee
- Department of Pediatrics, Harbor-UCLA Medical Center, 1000 West Carson Street, Torrance, CA 90502, U.S.A
| | - Robert A. Harris
- Richard Roudebush Veterans Affairs Medical Center, 1481 West Tenth Street, Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, U.S.A
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Hornbuckle LA, Everett CA, Martin CC, Gustavson SS, Svitek CA, Oeser JK, Neal DW, Cherrington AD, O'Brien RM. Selective stimulation of G-6-Pase catalytic subunit but not G-6-P transporter gene expression by glucagon in vivo and cAMP in situ. Am J Physiol Endocrinol Metab 2004; 286:E795-808. [PMID: 14722027 DOI: 10.1152/ajpendo.00455.2003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We recently compared the regulation of glucose-6-phosphatase (G-6-Pase) catalytic subunit and glucose 6-phosphate (G-6-P) transporter gene expression by insulin in conscious dogs in vivo (Hornbuckle LA, Edgerton DS, Ayala JE, Svitek CA, Neal DW, Cardin S, Cherrington AD, and O'Brien RM. Am J Physiol Endocrinol Metab 281: E713-E725, 2001). In pancreatic-clamped, euglycemic conscious dogs, a 5-h period of hypoinsulinemia led to a marked increase in hepatic G-6-Pase catalytic subunit mRNA; however, G-6-P transporter mRNA was unchanged. Here, we demonstrate, again using pancreatic-clamped, conscious dogs, that glucagon is a candidate for the factor responsible for this selective induction. Thus glucagon stimulated G-6-Pase catalytic subunit but not G-6-P transporter gene expression in vivo. Furthermore, cAMP stimulated endogenous G-6-Pase catalytic subunit gene expression in HepG2 cells but had no effect on G-6-P transporter gene expression. The cAMP response element (CRE) that mediates this induction was identified through transient transfection of HepG2 cells with G-6-Pase catalytic subunit-chloramphenicol acetyltransferase fusion genes. Gel retardation assays demonstrate that this CRE binds several transcription factors including CRE-binding protein and CCAAT enhancer-binding protein.
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Affiliation(s)
- Lauri A Hornbuckle
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical School, Nashville, TN 37232-0615, USA
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Foster JD, Nordlie RC. The biochemistry and molecular biology of the glucose-6-phosphatase system. Exp Biol Med (Maywood) 2002; 227:601-8. [PMID: 12192101 DOI: 10.1177/153537020222700807] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Progress has continued to be made over the past 4 years in our understanding of the glucose-6-phosphatase (G6Pase) system. The gene for a second component of the system, the putative glucose-6-P transporter (G6PT), was cloned, and mutations in this gene were found in patients diagnosed with glycogen storage disease type 1b. The functional characterization of this putative G6PT has been initiated, and the relationship between substrate transport via the G6PT and catalysis by the system's catalytic subunit continues to be explored. A lively debate over the feasibility of various aspects of the two proposed models of the G6Pase system persists, and the functional/structural relationships of the individual components of the system remain a hot topic of interest in G6Pase research. New evidence supportive of physiologic roles for the biosynthetic functions of the G6Pase system in vivo also has emerged over the past 4 years.
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Affiliation(s)
- James D Foster
- Department of Biochemistry and Molecular Biology, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota 58203, USA.
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