Unknown,Transcriptomics,Genomics,Proteomics

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Requirement for Sun1 in the expression of meiotic reproductive genes and piRNA


ABSTRACT: The inner nuclear envelope (NE) proteins interact with the nuclear lamina and participate in the architectural compartmentalization of chromosomes. The association of NE proteins with DNA contributes to the spatial rearrangement of chromosomes and their gene expression. Sun1 is an inner nuclear membrane (INM) protein that locates to telomeres and anchors chromosome movement in the prophase of meiosis. Here, we have created Sun1-/- mice and found that these mice are born and grow normally but are reproductively infertile. Detailed molecular analyses showed that Sun1-/- P14 testes are repressed for the expression of reproductive genes and have no detectable piRNA. These findings raise a heretofore unrecognized role of Sun1 in the selective gene expression of coding and non-coding RNAs needed for gemetogenesis. Total RNA was isolated from E14.5 mouse embryonic fibroblasts (MEFs) and and day 9 and 14 mouse whole testes. cDNA samples from paired (same parents) wt (Cy3-labled) and Sun1-/- (Cy5-labled) mice were mixed and hybridized.

ORGANISM(S): Mus musculus

SUBMITTER: Ya-Hui Chi 

PROVIDER: E-GEOD-12867 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Requirement for Sun1 in the expression of meiotic reproductive genes and piRNA.

Chi Ya-Hui YH   Cheng Lily I LI   Myers Tim T   Ward Jerrold M JM   Williams Elizabeth E   Su Qin Q   Faucette Larry L   Wang Jing-Ya JY   Jeang Kuan-Teh KT  

Development (Cambridge, England) 20090211 6


The inner nuclear envelope (NE) proteins interact with the nuclear lamina and participate in the architectural compartmentalization of chromosomes. The association of NE proteins with DNA contributes to the spatial rearrangement of chromosomes and their gene expression. Sun1 is an inner nuclear membrane (INM) protein that locates to telomeres and anchors chromosome movement in the prophase of meiosis. Here, we have created Sun1-/- mice and have found that these mice are born and grow normally bu  ...[more]

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