1
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Onodera T, Wang MY, Rutkowski JM, Deja S, Chen S, Balzer MS, Kim DS, Sun X, An YA, Field BC, Lee C, Matsuo EI, Mizerska M, Sanjana I, Fujiwara N, Kusminski CM, Gordillo R, Gautron L, Marciano DK, Hu MC, Burgess SC, Susztak K, Moe OW, Scherer PE. Endogenous renal adiponectin drives gluconeogenesis through enhancing pyruvate and fatty acid utilization. Nat Commun 2023; 14:6531. [PMID: 37848446 PMCID: PMC10582045 DOI: 10.1038/s41467-023-42188-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 10/03/2023] [Indexed: 10/19/2023] Open
Abstract
Adiponectin is a secretory protein, primarily produced in adipocytes. However, low but detectable expression of adiponectin can be observed in cell types beyond adipocytes, particularly in kidney tubular cells, but its local renal role is unknown. We assessed the impact of renal adiponectin by utilizing male inducible kidney tubular cell-specific adiponectin overexpression or knockout mice. Kidney-specific adiponectin overexpression induces a doubling of phosphoenolpyruvate carboxylase expression and enhanced pyruvate-mediated glucose production, tricarboxylic acid cycle intermediates and an upregulation of fatty acid oxidation (FAO). Inhibition of FAO reduces the adiponectin-induced enhancement of glucose production, highlighting the role of FAO in the induction of renal gluconeogenesis. In contrast, mice lacking adiponectin in the kidney exhibit enhanced glucose tolerance, lower utilization and greater accumulation of lipid species. Hence, renal adiponectin is an inducer of gluconeogenesis by driving enhanced local FAO and further underlines the important systemic contribution of renal gluconeogenesis.
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Affiliation(s)
- Toshiharu Onodera
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - May-Yun Wang
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Joseph M Rutkowski
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M University College of Medicine, Bryan, TX, USA
| | - Stanislaw Deja
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Shiuhwei Chen
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Michael S Balzer
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
- Department of Nephrology and Medical Intensive Care, Charité, Universitätsmedizin Berlin, 10117, Berlin, Germany
- Berlin Institute of Health at Charité, Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Clinician Scientist Program, 10117, Berlin, Germany
| | - Dae-Seok Kim
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Xuenan Sun
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Yu A An
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
- Department of Anesthesiology, Critical Care and Pain Medicine, UT Health Science Center at Houston, Houston, TX, USA
| | - Bianca C Field
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Charlotte Lee
- Center for Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ei-Ichi Matsuo
- Solutions COE, Analytical & Measuring Instruments Division, Shimadzu Corporation, Kyoto, Japan
| | - Monika Mizerska
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Ina Sanjana
- Solutions COE, Analytical & Measuring Instruments Division, Shimadzu Corporation, Kyoto, Japan
| | - Naoto Fujiwara
- Liver Tumor Translational Research Program, Simmons Comprehensive Cancer Center, Division of Digestive and Liver Diseases, Department of Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA
| | - Christine M Kusminski
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Ruth Gordillo
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US
| | - Laurent Gautron
- Center for Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Denise K Marciano
- Departments of Cell Biology and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ming Chang Hu
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shawn C Burgess
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Katalin Susztak
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
| | - Orson W Moe
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Physiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, US.
- Departments of Cell Biology and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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2
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Ramalingam H, Kashyap S, Cobo-Stark P, Flaten A, Chang CM, Hajarnis S, Hein KZ, Lika J, Warner GM, Espindola-Netto JM, Kumar A, Kanchwala M, Xing C, Chini EN, Patel V. A methionine-Mettl3-N 6-methyladenosine axis promotes polycystic kidney disease. Cell Metab 2021; 33:1234-1247.e7. [PMID: 33852874 PMCID: PMC8172529 DOI: 10.1016/j.cmet.2021.03.024] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/03/2021] [Accepted: 03/22/2021] [Indexed: 12/18/2022]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is a common monogenic disorder marked by numerous progressively enlarging kidney cysts. Mettl3, a methyltransferase that catalyzes the abundant N6-methyladenosine (m6A) RNA modification, is implicated in development, but its role in most diseases is unknown. Here, we show that Mettl3 and m6A levels are increased in mouse and human ADPKD samples and that kidney-specific transgenic Mettl3 expression produces tubular cysts. Conversely, Mettl3 deletion in three orthologous ADPKD mouse models slows cyst growth. Interestingly, methionine and S-adenosylmethionine (SAM) levels are also elevated in ADPKD models. Moreover, methionine and SAM induce Mettl3 expression and aggravate ex vivo cyst growth, whereas dietary methionine restriction attenuates mouse ADPKD. Finally, Mettl3 activates the cyst-promoting c-Myc and cAMP pathways through enhanced c-Myc and Avpr2 mRNA m6A modification and translation. Thus, Mettl3 promotes ADPKD and links methionine utilization to epitranscriptomic activation of proliferation and cyst growth.
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Affiliation(s)
- Harini Ramalingam
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA
| | - Sonu Kashyap
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Patricia Cobo-Stark
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA
| | - Andrea Flaten
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA
| | - Chun-Mien Chang
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA
| | - Sachin Hajarnis
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA
| | - Kyaw Zaw Hein
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Jorgo Lika
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Gina M Warner
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Jair M Espindola-Netto
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Ashwani Kumar
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Mohammed Kanchwala
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Chao Xing
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Eduardo N Chini
- Department of Anesthesiology and Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA.
| | - Vishal Patel
- Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center Dallas, TX 75390, USA.
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3
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Tian X, Zhou B. Strategies for site-specific recombination with high efficiency and precise spatiotemporal resolution. J Biol Chem 2021; 296:100509. [PMID: 33676891 PMCID: PMC8050033 DOI: 10.1016/j.jbc.2021.100509] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 01/04/2023] Open
Abstract
Site-specific recombinases (SSRs) are invaluable genome engineering tools that have enormously boosted our understanding of gene functions and cell lineage relationships in developmental biology, stem cell biology, regenerative medicine, and multiple diseases. However, the ever-increasing complexity of biomedical research requires the development of novel site-specific genetic recombination technologies that can manipulate genomic DNA with high efficiency and fine spatiotemporal control. Here, we review the latest innovative strategies of the commonly used Cre-loxP recombination system and its combinatorial strategies with other site-specific recombinase systems. We also highlight recent progress with a focus on the new generation of chemical- and light-inducible genetic systems and discuss the merits and limitations of each new and established system. Finally, we provide the future perspectives of combining various recombination systems or improving well-established site-specific genetic tools to achieve more efficient and precise spatiotemporal genetic manipulation.
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Affiliation(s)
- Xueying Tian
- Key Laboratory of Regenerative Medicine of Ministry of Education, College of Life Science and Technology, Jinan University, Guangzhou, China.
| | - Bin Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China; School of Life Science and Technology, ShanghaiTech University, Shanghai, China; School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.
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4
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Drake KA, Fessler AR, Carroll TJ. Methods for renal lineage tracing: In vivo and beyond. Methods Cell Biol 2019; 154:121-143. [PMID: 31493814 DOI: 10.1016/bs.mcb.2019.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lineage tracing has resulted in fundamental discoveries in kidney development and disease and remains a powerful technique to study mechanisms of organogenesis, homeostasis, and repair/regeneration. Following decades of research on the cellular and molecular regulation of renal organogenesis, the kidney has become one of the most well-characterized organs, resulting in exciting advancements in pluripotent stem cell differentiation, tissue bioengineering, and the potential for developing novel regenerative therapies for kidney disease. Lineage tracing, or the labeling of progeny cells arising from a single cell or group of cells, allows for spatial and temporal analyses of dynamic in vivo and in vitro processes. As lineage tracing techniques expand across disciplines of developmental biology, stem cell biology, and regenerative medicine, careful experimental design and interpretation, along with an understanding of the basic principles and technical limitations, are essential for utilizing genetically complex lineage tracing models to further understand kidney development and disease.
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Affiliation(s)
- Keri A Drake
- Division of Pediatric Nephrology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Alicia R Fessler
- Department of Internal Medicine (Nephrology), University of Texas Southwestern Medical Center, Dallas, TX, United States; Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Thomas J Carroll
- Department of Internal Medicine (Nephrology), University of Texas Southwestern Medical Center, Dallas, TX, United States; Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, United States.
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5
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Ferrè S, Deng Y, Huen SC, Lu CY, Scherer PE, Igarashi P, Moe OW. Renal tubular cell spliced X-box binding protein 1 (Xbp1s) has a unique role in sepsis-induced acute kidney injury and inflammation. Kidney Int 2019; 96:1359-1373. [PMID: 31601454 DOI: 10.1016/j.kint.2019.06.023] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 06/04/2019] [Accepted: 06/27/2019] [Indexed: 12/15/2022]
Abstract
Sepsis is a systemic inflammatory state in response to infection, and concomitant acute kidney injury (AKI) increases mortality significantly. Endoplasmic reticulum stress is activated in many cell types upon microbial infection and modulates inflammation. The role of endoplasmic reticulum signaling in the kidney during septic AKI is unknown. Here we tested the role of the spliced X-box binding protein 1 (Xbp1s), a key component of the endoplasmic reticulum stress-activated pathways, in the renal response to sepsis in the lipopolysaccharide (LPS) model. Xbp1s was increased in the kidneys of mice treated with LPS but not in other models of AKI, or several chronic kidney disease models. The functional significance of Xbp1s induction was examined by genetic manipulation in renal tubules. Renal tubule-specific overexpression of Xbp1s caused severe tubule dilation and vacuolation with expression of the injury markers Kim1 and Ngal, the pro-inflammatory molecules interleukin-6 (Il6) and Toll-like receptor 4 (Tlr4), decreased kidney function and 50% mortality in five days. Renal tubule-specific genetic ablation of Xbp1 had no phenotype at baseline. However, after LPS, Xbp1 knockdown mice displayed lower renal NGAL, pro-apoptotic factor CHOP, serum creatinine levels, and a tendency towards lower Tlr4 compared to LPS-treated mice with intact Xbp1s. LPS treatment in Xbp1s-overexpressing mice caused a mild increase in NGAL and CHOP compared to LPS-treated mice without genetic Xbp1s overexpression. Thus, increased Xbp1s signaling in renal tubules is unique to sepsis-induced AKI and contributes to renal inflammation and injury. Inhibition of this pathway may be a potential portal to alleviate injury.
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Affiliation(s)
- Silvia Ferrè
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
| | - Yingfeng Deng
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Sarah C Huen
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Christopher Y Lu
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E Scherer
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Peter Igarashi
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Orson W Moe
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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6
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Bailey ST, Smith AM, Kardos J, Wobker SE, Wilson HL, Krishnan B, Saito R, Lee HJ, Zhang J, Eaton SC, Williams LA, Manocha U, Peters DJ, Pan X, Carroll TJ, Felsher DW, Walter V, Zhang Q, Parker JS, Yeh JJ, Moffitt RA, Leung JY, Kim WY. MYC activation cooperates with Vhl and Ink4a/Arf loss to induce clear cell renal cell carcinoma. Nat Commun 2017; 8:15770. [PMID: 28593993 PMCID: PMC5472759 DOI: 10.1038/ncomms15770] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 04/26/2017] [Indexed: 11/17/2022] Open
Abstract
Renal carcinoma is a common and aggressive malignancy whose histopathogenesis is incompletely understood and that is largely resistant to cytotoxic chemotherapy. We present two mouse models of kidney cancer that recapitulate the genomic alterations found in human papillary (pRCC) and clear cell RCC (ccRCC), the most common RCC subtypes. MYC activation results in highly penetrant pRCC tumours (MYC), while MYC activation, when combined with Vhl and Cdkn2a (Ink4a/Arf) deletion (VIM), produce kidney tumours that approximate human ccRCC. RNAseq of the mouse tumours demonstrate that MYC tumours resemble Type 2 pRCC, which are known to harbour MYC activation. Furthermore, VIM tumours more closely simulate human ccRCC. Based on their high penetrance, short latency, and histologic fidelity, these models of papillary and clear cell RCC should be significant contributions to the field of kidney cancer research. Renal cell carcinoma (RCC) is a common and aggressive malignancy. Here, the authors generate two mouse models of the most common RCC subtypes: the human papillary RCC through MYC activation and clear cell RCC through MYC activation combined with Vhl and Cdkn2a deletion.
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Affiliation(s)
- Sean T Bailey
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Aleisha M Smith
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jordan Kardos
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Sara E Wobker
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Pathology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Harper L Wilson
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Bhavani Krishnan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ryoichi Saito
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Hyo Jin Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jing Zhang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Pathology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Samuel C Eaton
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Lindsay A Williams
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ujjawal Manocha
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Dorien J Peters
- Department of Pathology, Leiden University Medical Center, Leiden 2333, The Netherlands
| | - Xinchao Pan
- Departments of Internal Medicine and Molecular Biology, UT Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Thomas J Carroll
- Departments of Internal Medicine and Molecular Biology, UT Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Dean W Felsher
- Department of Medicine, Stanford University School of Medicine, Palo Alto, California 94305-5151, USA
| | - Vonn Walter
- Department of Biochemistry and Molecular Biology, Penn State Milton S. Hershey College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
| | - Qing Zhang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Pathology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Joel S Parker
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jen Jen Yeh
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Richard A Moffitt
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Janet Y Leung
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - William Y Kim
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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7
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Rutkowski JM, Pastor J, Sun K, Park SK, Bobulescu IA, Chen CT, Moe OW, Scherer PE. Adiponectin alters renal calcium and phosphate excretion through regulation of klotho expression. Kidney Int 2017; 91:324-337. [PMID: 27914707 PMCID: PMC5237401 DOI: 10.1016/j.kint.2016.09.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 08/16/2016] [Accepted: 09/08/2016] [Indexed: 12/29/2022]
Abstract
The kidney controls systemic calcium and phosphate levels and disturbances of its control mechanisms can lead to a variety of diseases. The insulin-sensitizing adipokine adiponectin is renoprotective and accelerates functional recovery following renal injury. However, unlike other adipokines, adiponectin is reduced in obesity. High adiponectin levels are also correlated with bone loss, suggestive of an additional action in mineral metabolism. Using knockout, wild-type, and adiponectin-overexpressing transgenic mice, we sought to identify the mechanistic basis for adiponectin's ability to regulate calcium and phosphate balance at the level of the kidney. Adiponectin knockout mice exhibited lower serum calcium, lower urinary calcium excretion, and markedly lower serum fibroblast growth factor 23 (FGF23) levels, although circulating klotho concentrations were significantly higher than in wild-type littermates. The transgenic mice exhibited lower bone mass and strength, particularly compared to adiponectin knockout mice. The transgenic mice were hyper-responsive to a 2% phosphate-enriched diet, exhibiting 2-fold higher serum FGF23 and concomitantly higher fractional phosphate excretion. These mice also excreted more calcium with calcium-enriched diet and had less renal klotho protein expression. In contrast, the knockout mice exhibited a smaller increase in FGF23 and maintained elevated klotho levels on both mineral challenges. Kidney-specific adiponectin expression in doxycycline-inducible adiponectin mice and adiponectin addition in vitro confirmed adiponectin's ability to reduce tubular epithelial cell klotho secretion. Thus, adiponectin alters calcium and phosphate balance and renal mineral excretion, in part, through klotho. This work highlights the profound effects of adipose tissue on renal function and has identified a new mechanism by which adiponectin may regulate bone mass.
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Affiliation(s)
- Joseph M Rutkowski
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Johanne Pastor
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kai Sun
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Sun K Park
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - I Alexandru Bobulescu
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Christopher T Chen
- The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Orson W Moe
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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8
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Lammoglia GM, Van Zandt CE, Galvan DX, Orozco JL, Dellinger MT, Rutkowski JM. Hyperplasia, de novo lymphangiogenesis, and lymphatic regression in mice with tissue-specific, inducible overexpression of murine VEGF-D. Am J Physiol Heart Circ Physiol 2016; 311:H384-94. [PMID: 27342876 DOI: 10.1152/ajpheart.00208.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/13/2016] [Indexed: 01/19/2023]
Abstract
Lymphatic vessels modulate tissue fluid balance and inflammation and provide a conduit for endocrine and lipid transport. The growth of new lymphatic vessels in the adult, lymphangiogenesis, is predominantly mediated through vascular endothelial growth factor receptor-3 (VEGFR-3) signaling. We took advantage of the unique binding of murine VEGF-D specifically to VEGFR-3 and generated mice capable of inducible, tissue-specific expression of murine VEGF-D under a tightly-controlled tetracycline response element (TRE) promoter to stimulate adult tissue lymphangiogenesis. With doxycycline-activated expression, TRE-VEGF-D mouse crossed to mice with tissue-specific promoters for the lung [Clara cell secretory protein-reverse tetracycline transactivator (rtTA)] developed pulmonary lymphangiectasia. In the kidney, (kidney-specific protein-rtTA × TRE-VEGF-D) mice exhibited rapid lymphatic hyperplasia on induction of VEGF-D expression. Crossed with adipocyte-specific adiponectin-rtTA mice [Adipo-VEGF-D (VD)], chronic VEGF-D overexpression was capable of inducing de novo lymphangiogenesis in white adipose tissue and a massive expansion of brown adipose tissue lymphatics. VEGF-D expression in white adipose tissue also increased macrophage infiltration and tissue fibrosis in the tissue. Expression did not, however, measurably affect peripheral fluid transport, the blood vasculature, or basal metabolic parameters. On removal of the doxycycline stimulus, VEGF-D expression returned to normal, and the expanded adipose tissue lymphatics regressed in Adipo-VD mice. The inducible TRE-VEGF-D mouse thus provides a novel murine platform to study the adult mechanisms and therapies of an array of disease- and tissue-specific models of lymphangiogenesis.
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Affiliation(s)
- Gabriela M Lammoglia
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M Health Science Center School of Medicine, College Station, Texas
| | - Carolynn E Van Zandt
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M Health Science Center School of Medicine, College Station, Texas
| | - Daniel X Galvan
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M Health Science Center School of Medicine, College Station, Texas
| | - Jose L Orozco
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas; and
| | - Michael T Dellinger
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Joseph M Rutkowski
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M Health Science Center School of Medicine, College Station, Texas; Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas; and
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Pan X, Schnell U, Karner CM, Small EV, Carroll TJ. A Cre-inducible fluorescent reporter for observing apical membrane dynamics. Genesis 2015; 53:285-93. [PMID: 25809849 DOI: 10.1002/dvg.22848] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 01/31/2015] [Accepted: 03/09/2015] [Indexed: 01/02/2023]
Abstract
The ability to image living tissues with fluorescent proteins has revolutionized the fields of cell and developmental biology. Fusions between fluorescent proteins and various polypeptides are allowing scientists to image tissues with sub-cellular resolution. Here, we describe the generation and activity of a genetically engineered mouse line expressing a fusion between the green fluorescent protein (GFP) and the apically localized protein Crumbs3 (Crb3). This reporter drives Cre-inducible expression of Crb3-GFP under control of the EF1a regulatory domains. The fusion protein is broadly expressed in embryonic and adult tissues and shows apical restriction in the majority of epithelial cell types. It displays a variably penetrant gain of function activity in the neural tube. However, in several cell types, over-expression of Crb3 does not appear to have any effect on normal development or maintenance. Detailed analysis of kidneys expressing this reporter indicates normal morphology and function highlighting the utility for live imaging. Thus, the EF1a(Crb3-GFP) mouse line will be of broad use for studying membrane and/or tissue dynamics in living tissues.
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Affiliation(s)
- Xinchao Pan
- Department of Internal Medicine (Nephrology), UT Southwestern Medical Center, Dallas, Texas; Department of Molecular Biology, UT Southwestern Medical Center, Dallas, Texas
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