Peroxisomal Multifunctional Protein 2 Is Essential for Lipid Homeostasis in Sertoli Cells and Male Fertility in Mice

Inactivation of peroxisomal β-oxidation in mice, by knocking out multifunctional protein-2 (MFP-2; also called d-bifunctional enzyme), causes male infertility. In the testis, extensive accumulations of neutral lipids were observed in Sertoli cells, beginning in prepubertal mice and evolving in compl...

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Veröffentlicht in:Endocrinology (Philadelphia) 2006-05, Vol.147 (5), p.2228-2236
Hauptverfasser: Huyghe, Steven, Schmalbruch, Henning, De Gendt, Karel, Verhoeven, Guido, Guillou, Florian, Van Veldhoven, Paul P, Baes, Myriam
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container_issue 5
container_start_page 2228
container_title Endocrinology (Philadelphia)
container_volume 147
creator Huyghe, Steven
Schmalbruch, Henning
De Gendt, Karel
Verhoeven, Guido
Guillou, Florian
Van Veldhoven, Paul P
Baes, Myriam
description Inactivation of peroxisomal β-oxidation in mice, by knocking out multifunctional protein-2 (MFP-2; also called d-bifunctional enzyme), causes male infertility. In the testis, extensive accumulations of neutral lipids were observed in Sertoli cells, beginning in prepubertal mice and evolving in complete testicular atrophy by the age of 4 months. Spermatogenesis was already severely affected at the age of 5 wk, and pre- and postmeiotic germ cells gradually disappeared from the tubuli seminiferi. Based on cytochemical stainings and biochemical analyses, the lipid droplets consisted of cholesteryl esters and neutral glycerolipids. Furthermore, peroxisomal β-oxidation substrates, such as very-long-chain fatty acids and pristanic acid, accumulated in the testis, whereas the concentration of docosapentaenoic acid, a polyunsaturated fatty acid and peroxisomal β-oxidation product, was reduced. The testicular defects were also present in double MFP-2/peroxisome proliferator-activated receptor-α knockout mice, ruling out the possibility that they were mediated through the activation of this nuclear receptor. Immunoreactivity for peroxisomal proteins, including MFP-2, was detected in Sertoli cells as well as in germ cells and Leydig cells. The pivotal role of peroxisomal metabolism in Sertoli cells was also demonstrated by generating mice with a Sertoli cell-selective elimination of peroxisomes through cell type-specific inactivation of the peroxin 5 gene. These mice also developed lipid inclusions and were infertile, and their testes fully degenerated by the age of 4 months. In conclusion, the present data demonstrate that peroxisomal β-oxidation is essential for lipid homeostasis in the testis and for male fertility.
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In the testis, extensive accumulations of neutral lipids were observed in Sertoli cells, beginning in prepubertal mice and evolving in complete testicular atrophy by the age of 4 months. Spermatogenesis was already severely affected at the age of 5 wk, and pre- and postmeiotic germ cells gradually disappeared from the tubuli seminiferi. Based on cytochemical stainings and biochemical analyses, the lipid droplets consisted of cholesteryl esters and neutral glycerolipids. Furthermore, peroxisomal β-oxidation substrates, such as very-long-chain fatty acids and pristanic acid, accumulated in the testis, whereas the concentration of docosapentaenoic acid, a polyunsaturated fatty acid and peroxisomal β-oxidation product, was reduced. The testicular defects were also present in double MFP-2/peroxisome proliferator-activated receptor-α knockout mice, ruling out the possibility that they were mediated through the activation of this nuclear receptor. Immunoreactivity for peroxisomal proteins, including MFP-2, was detected in Sertoli cells as well as in germ cells and Leydig cells. The pivotal role of peroxisomal metabolism in Sertoli cells was also demonstrated by generating mice with a Sertoli cell-selective elimination of peroxisomes through cell type-specific inactivation of the peroxin 5 gene. These mice also developed lipid inclusions and were infertile, and their testes fully degenerated by the age of 4 months. In conclusion, the present data demonstrate that peroxisomal β-oxidation is essential for lipid homeostasis in the testis and for male fertility.</description><identifier>ISSN: 0013-7227</identifier><identifier>EISSN: 1945-7170</identifier><identifier>DOI: 10.1210/en.2005-1571</identifier><identifier>PMID: 16484321</identifier><identifier>CODEN: ENDOAO</identifier><language>eng</language><publisher>Bethesda, MD: Endocrine Society</publisher><subject>17-Hydroxysteroid Dehydrogenases - metabolism ; Age ; Animals ; Atrophy ; Biological and medical sciences ; Cell activation ; Cholesterol Esters - chemistry ; Deactivation ; Endocrinology and metabolism ; Enoyl-CoA Hydratase - metabolism ; Esters ; Fatty acids ; Fatty Acids - metabolism ; Fatty Acids - pharmacology ; Fatty Acids, Unsaturated - metabolism ; Fertility ; Fundamental and applied biological sciences. Psychology ; Germ cells ; Heterozygote ; Homeostasis ; Homozygote ; Human health and pathology ; Immunohistochemistry ; Immunoreactivity ; Inactivation ; Inclusions ; Infertility ; Infertility, Male ; Leydig Cells ; Life Sciences ; Lipid Metabolism ; Lipids ; Lipids - chemistry ; Male ; Males ; Mice ; Mice, Knockout ; Mice, Transgenic ; Multienzyme Complexes - metabolism ; Multifunctional protein-2 ; Oxidation ; Oxygen - metabolism ; Peroxin ; Peroxisomal Multifunctional Protein-2 ; Peroxisome proliferator-activated receptors ; Peroxisomes - metabolism ; Polyunsaturated fatty acids ; PPAR alpha - genetics ; Proteins ; Rats ; Receptors ; Reverse Transcriptase Polymerase Chain Reaction ; RNA - metabolism ; Seminiferous Tubules - metabolism ; Sertoli cells ; Sertoli Cells - metabolism ; Spermatogenesis ; Testes ; Testis - metabolism ; Vertebrates: endocrinology</subject><ispartof>Endocrinology (Philadelphia), 2006-05, Vol.147 (5), p.2228-2236</ispartof><rights>Copyright © 2006 by The Endocrine Society 2006</rights><rights>2006 INIST-CNRS</rights><rights>Copyright © 2006 by The Endocrine Society</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c561t-7f1c90046f89f5babd232d51a9dc242bb10af5b1d526b824ab892694a4ac55d93</citedby><cites>FETCH-LOGICAL-c561t-7f1c90046f89f5babd232d51a9dc242bb10af5b1d526b824ab892694a4ac55d93</cites><orcidid>0000-0002-7325-5317</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=17712233$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16484321$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.inrae.fr/hal-02657089$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Huyghe, Steven</creatorcontrib><creatorcontrib>Schmalbruch, Henning</creatorcontrib><creatorcontrib>De Gendt, Karel</creatorcontrib><creatorcontrib>Verhoeven, Guido</creatorcontrib><creatorcontrib>Guillou, Florian</creatorcontrib><creatorcontrib>Van Veldhoven, Paul P</creatorcontrib><creatorcontrib>Baes, Myriam</creatorcontrib><title>Peroxisomal Multifunctional Protein 2 Is Essential for Lipid Homeostasis in Sertoli Cells and Male Fertility in Mice</title><title>Endocrinology (Philadelphia)</title><addtitle>Endocrinology</addtitle><description>Inactivation of peroxisomal β-oxidation in mice, by knocking out multifunctional protein-2 (MFP-2; also called d-bifunctional enzyme), causes male infertility. In the testis, extensive accumulations of neutral lipids were observed in Sertoli cells, beginning in prepubertal mice and evolving in complete testicular atrophy by the age of 4 months. Spermatogenesis was already severely affected at the age of 5 wk, and pre- and postmeiotic germ cells gradually disappeared from the tubuli seminiferi. Based on cytochemical stainings and biochemical analyses, the lipid droplets consisted of cholesteryl esters and neutral glycerolipids. Furthermore, peroxisomal β-oxidation substrates, such as very-long-chain fatty acids and pristanic acid, accumulated in the testis, whereas the concentration of docosapentaenoic acid, a polyunsaturated fatty acid and peroxisomal β-oxidation product, was reduced. The testicular defects were also present in double MFP-2/peroxisome proliferator-activated receptor-α knockout mice, ruling out the possibility that they were mediated through the activation of this nuclear receptor. Immunoreactivity for peroxisomal proteins, including MFP-2, was detected in Sertoli cells as well as in germ cells and Leydig cells. The pivotal role of peroxisomal metabolism in Sertoli cells was also demonstrated by generating mice with a Sertoli cell-selective elimination of peroxisomes through cell type-specific inactivation of the peroxin 5 gene. These mice also developed lipid inclusions and were infertile, and their testes fully degenerated by the age of 4 months. In conclusion, the present data demonstrate that peroxisomal β-oxidation is essential for lipid homeostasis in the testis and for male fertility.</description><subject>17-Hydroxysteroid Dehydrogenases - metabolism</subject><subject>Age</subject><subject>Animals</subject><subject>Atrophy</subject><subject>Biological and medical sciences</subject><subject>Cell activation</subject><subject>Cholesterol Esters - chemistry</subject><subject>Deactivation</subject><subject>Endocrinology and metabolism</subject><subject>Enoyl-CoA Hydratase - metabolism</subject><subject>Esters</subject><subject>Fatty acids</subject><subject>Fatty Acids - metabolism</subject><subject>Fatty Acids - pharmacology</subject><subject>Fatty Acids, Unsaturated - metabolism</subject><subject>Fertility</subject><subject>Fundamental and applied biological sciences. 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In the testis, extensive accumulations of neutral lipids were observed in Sertoli cells, beginning in prepubertal mice and evolving in complete testicular atrophy by the age of 4 months. Spermatogenesis was already severely affected at the age of 5 wk, and pre- and postmeiotic germ cells gradually disappeared from the tubuli seminiferi. Based on cytochemical stainings and biochemical analyses, the lipid droplets consisted of cholesteryl esters and neutral glycerolipids. Furthermore, peroxisomal β-oxidation substrates, such as very-long-chain fatty acids and pristanic acid, accumulated in the testis, whereas the concentration of docosapentaenoic acid, a polyunsaturated fatty acid and peroxisomal β-oxidation product, was reduced. The testicular defects were also present in double MFP-2/peroxisome proliferator-activated receptor-α knockout mice, ruling out the possibility that they were mediated through the activation of this nuclear receptor. Immunoreactivity for peroxisomal proteins, including MFP-2, was detected in Sertoli cells as well as in germ cells and Leydig cells. The pivotal role of peroxisomal metabolism in Sertoli cells was also demonstrated by generating mice with a Sertoli cell-selective elimination of peroxisomes through cell type-specific inactivation of the peroxin 5 gene. These mice also developed lipid inclusions and were infertile, and their testes fully degenerated by the age of 4 months. In conclusion, the present data demonstrate that peroxisomal β-oxidation is essential for lipid homeostasis in the testis and for male fertility.</abstract><cop>Bethesda, MD</cop><pub>Endocrine Society</pub><pmid>16484321</pmid><doi>10.1210/en.2005-1571</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-7325-5317</orcidid><oa>free_for_read</oa></addata></record>
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subjects 17-Hydroxysteroid Dehydrogenases - metabolism
Age
Animals
Atrophy
Biological and medical sciences
Cell activation
Cholesterol Esters - chemistry
Deactivation
Endocrinology and metabolism
Enoyl-CoA Hydratase - metabolism
Esters
Fatty acids
Fatty Acids - metabolism
Fatty Acids - pharmacology
Fatty Acids, Unsaturated - metabolism
Fertility
Fundamental and applied biological sciences. Psychology
Germ cells
Heterozygote
Homeostasis
Homozygote
Human health and pathology
Immunohistochemistry
Immunoreactivity
Inactivation
Inclusions
Infertility
Infertility, Male
Leydig Cells
Life Sciences
Lipid Metabolism
Lipids
Lipids - chemistry
Male
Males
Mice
Mice, Knockout
Mice, Transgenic
Multienzyme Complexes - metabolism
Multifunctional protein-2
Oxidation
Oxygen - metabolism
Peroxin
Peroxisomal Multifunctional Protein-2
Peroxisome proliferator-activated receptors
Peroxisomes - metabolism
Polyunsaturated fatty acids
PPAR alpha - genetics
Proteins
Rats
Receptors
Reverse Transcriptase Polymerase Chain Reaction
RNA - metabolism
Seminiferous Tubules - metabolism
Sertoli cells
Sertoli Cells - metabolism
Spermatogenesis
Testes
Testis - metabolism
Vertebrates: endocrinology
title Peroxisomal Multifunctional Protein 2 Is Essential for Lipid Homeostasis in Sertoli Cells and Male Fertility in Mice
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