Induction of heme oxygenase-1 protects against podocyte apoptosis under diabetic conditions

Heme oxygenase-1 (HO-1) is an anti-oxidant enzyme normally upregulated in response to oxidant injury. Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 ex...

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Veröffentlicht in:Kidney international 2009-10, Vol.76 (8), p.838-848
Hauptverfasser: Lee, Sang Choel, Han, Seung Hyeok, Li, Jin Ji, Lee, Sun Ha, Jung, Dong-Sub, Kwak, Seung-Jae, Kim, Seung Hye, Kim, Dong Ki, Yoo, Tae-Hyun, Kim, Jin Hyun, Chang, Se-Ho, Han, Dae Suk, Kang, Shin-Wook
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container_end_page 848
container_issue 8
container_start_page 838
container_title Kidney international
container_volume 76
creator Lee, Sang Choel
Han, Seung Hyeok
Li, Jin Ji
Lee, Sun Ha
Jung, Dong-Sub
Kwak, Seung-Jae
Kim, Seung Hye
Kim, Dong Ki
Yoo, Tae-Hyun
Kim, Jin Hyun
Chang, Se-Ho
Han, Dae Suk
Kang, Shin-Wook
description Heme oxygenase-1 (HO-1) is an anti-oxidant enzyme normally upregulated in response to oxidant injury. Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 expression, its activity, the ratio of Bax/Bcl-2 protein, and active caspase-3 fragments were all significantly higher in isolated glomeruli of diabetic rats and in high glucose–treated podocytes. These increases were inhibited by zinc protoporphyrin treatment of the rats or by HO-1 siRNA treatment of the podocytes in culture. The number of apoptotic cells was also significantly increased in the glomeruli of diabetic rats and in high glucose–treated podocytes. Inhibition of HO-1 accentuated the increase in apoptotic cells both in vivo and in vitro. Our findings suggest that HO-1 expression protects against podocyte apoptosis under diabetic conditions.
doi_str_mv 10.1038/ki.2009.286
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Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 expression, its activity, the ratio of Bax/Bcl-2 protein, and active caspase-3 fragments were all significantly higher in isolated glomeruli of diabetic rats and in high glucose–treated podocytes. These increases were inhibited by zinc protoporphyrin treatment of the rats or by HO-1 siRNA treatment of the podocytes in culture. The number of apoptotic cells was also significantly increased in the glomeruli of diabetic rats and in high glucose–treated podocytes. Inhibition of HO-1 accentuated the increase in apoptotic cells both in vivo and in vitro. Our findings suggest that HO-1 expression protects against podocyte apoptosis under diabetic conditions.</description><identifier>ISSN: 0085-2538</identifier><identifier>EISSN: 1523-1755</identifier><identifier>DOI: 10.1038/ki.2009.286</identifier><identifier>PMID: 19657327</identifier><identifier>CODEN: KDYIA5</identifier><language>eng</language><publisher>Basingstoke: Elsevier Inc</publisher><subject>Animals ; apoptosis ; Apoptosis - drug effects ; bcl-2-Associated X Protein - metabolism ; Biological and medical sciences ; Caspase 3 - metabolism ; Cells, Cultured ; Diabetes Mellitus, Experimental - complications ; Diabetes Mellitus, Experimental - enzymology ; Diabetes Mellitus, Experimental - pathology ; Diabetes. Impaired glucose tolerance ; Diabetic Nephropathies - enzymology ; Diabetic Nephropathies - etiology ; Diabetic Nephropathies - pathology ; Diabetic Nephropathies - prevention &amp; control ; diabetic nephropathy ; Endocrine pancreas. Apud cells (diseases) ; Endocrinopathies ; Enzyme Inhibitors - pharmacology ; Etiopathogenesis. Screening. Investigations. Target tissue resistance ; Female ; Glucose - metabolism ; Heme Oxygenase (Decyclizing) - metabolism ; heme oxygenase-1 ; Heme Oxygenase-1 - antagonists &amp; inhibitors ; Heme Oxygenase-1 - genetics ; Heme Oxygenase-1 - metabolism ; Hemin - pharmacology ; high glucose ; Hypoxia-Inducible Factor 1 - metabolism ; Kidneys ; Male ; Medical sciences ; Membrane Proteins - metabolism ; Mice ; Nephrology. Urinary tract diseases ; podocyte ; Podocytes - drug effects ; Podocytes - enzymology ; Podocytes - pathology ; Proto-Oncogene Proteins c-bcl-2 - metabolism ; Protoporphyrins - pharmacology ; Rats ; Rats, Sprague-Dawley ; RNA Interference ; Up-Regulation ; Urinary system involvement in other diseases. 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Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 expression, its activity, the ratio of Bax/Bcl-2 protein, and active caspase-3 fragments were all significantly higher in isolated glomeruli of diabetic rats and in high glucose–treated podocytes. These increases were inhibited by zinc protoporphyrin treatment of the rats or by HO-1 siRNA treatment of the podocytes in culture. The number of apoptotic cells was also significantly increased in the glomeruli of diabetic rats and in high glucose–treated podocytes. Inhibition of HO-1 accentuated the increase in apoptotic cells both in vivo and in vitro. Our findings suggest that HO-1 expression protects against podocyte apoptosis under diabetic conditions.</description><subject>Animals</subject><subject>apoptosis</subject><subject>Apoptosis - drug effects</subject><subject>bcl-2-Associated X Protein - metabolism</subject><subject>Biological and medical sciences</subject><subject>Caspase 3 - metabolism</subject><subject>Cells, Cultured</subject><subject>Diabetes Mellitus, Experimental - complications</subject><subject>Diabetes Mellitus, Experimental - enzymology</subject><subject>Diabetes Mellitus, Experimental - pathology</subject><subject>Diabetes. Impaired glucose tolerance</subject><subject>Diabetic Nephropathies - enzymology</subject><subject>Diabetic Nephropathies - etiology</subject><subject>Diabetic Nephropathies - pathology</subject><subject>Diabetic Nephropathies - prevention &amp; control</subject><subject>diabetic nephropathy</subject><subject>Endocrine pancreas. Apud cells (diseases)</subject><subject>Endocrinopathies</subject><subject>Enzyme Inhibitors - pharmacology</subject><subject>Etiopathogenesis. Screening. Investigations. Target tissue resistance</subject><subject>Female</subject><subject>Glucose - metabolism</subject><subject>Heme Oxygenase (Decyclizing) - metabolism</subject><subject>heme oxygenase-1</subject><subject>Heme Oxygenase-1 - antagonists &amp; inhibitors</subject><subject>Heme Oxygenase-1 - genetics</subject><subject>Heme Oxygenase-1 - metabolism</subject><subject>Hemin - pharmacology</subject><subject>high glucose</subject><subject>Hypoxia-Inducible Factor 1 - metabolism</subject><subject>Kidneys</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Membrane Proteins - metabolism</subject><subject>Mice</subject><subject>Nephrology. Urinary tract diseases</subject><subject>podocyte</subject><subject>Podocytes - drug effects</subject><subject>Podocytes - enzymology</subject><subject>Podocytes - pathology</subject><subject>Proto-Oncogene Proteins c-bcl-2 - metabolism</subject><subject>Protoporphyrins - pharmacology</subject><subject>Rats</subject><subject>Rats, Sprague-Dawley</subject><subject>RNA Interference</subject><subject>Up-Regulation</subject><subject>Urinary system involvement in other diseases. 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Impaired glucose tolerance</topic><topic>Diabetic Nephropathies - enzymology</topic><topic>Diabetic Nephropathies - etiology</topic><topic>Diabetic Nephropathies - pathology</topic><topic>Diabetic Nephropathies - prevention &amp; control</topic><topic>diabetic nephropathy</topic><topic>Endocrine pancreas. Apud cells (diseases)</topic><topic>Endocrinopathies</topic><topic>Enzyme Inhibitors - pharmacology</topic><topic>Etiopathogenesis. Screening. Investigations. 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subjects Animals
apoptosis
Apoptosis - drug effects
bcl-2-Associated X Protein - metabolism
Biological and medical sciences
Caspase 3 - metabolism
Cells, Cultured
Diabetes Mellitus, Experimental - complications
Diabetes Mellitus, Experimental - enzymology
Diabetes Mellitus, Experimental - pathology
Diabetes. Impaired glucose tolerance
Diabetic Nephropathies - enzymology
Diabetic Nephropathies - etiology
Diabetic Nephropathies - pathology
Diabetic Nephropathies - prevention & control
diabetic nephropathy
Endocrine pancreas. Apud cells (diseases)
Endocrinopathies
Enzyme Inhibitors - pharmacology
Etiopathogenesis. Screening. Investigations. Target tissue resistance
Female
Glucose - metabolism
Heme Oxygenase (Decyclizing) - metabolism
heme oxygenase-1
Heme Oxygenase-1 - antagonists & inhibitors
Heme Oxygenase-1 - genetics
Heme Oxygenase-1 - metabolism
Hemin - pharmacology
high glucose
Hypoxia-Inducible Factor 1 - metabolism
Kidneys
Male
Medical sciences
Membrane Proteins - metabolism
Mice
Nephrology. Urinary tract diseases
podocyte
Podocytes - drug effects
Podocytes - enzymology
Podocytes - pathology
Proto-Oncogene Proteins c-bcl-2 - metabolism
Protoporphyrins - pharmacology
Rats
Rats, Sprague-Dawley
RNA Interference
Up-Regulation
Urinary system involvement in other diseases. Miscellaneous
title Induction of heme oxygenase-1 protects against podocyte apoptosis under diabetic conditions
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