Imprinting analysis of the porcine MEST gene in 75 and 90 day placentas and prenatal tissues.
Imprinted genes play important roles in mammalian growth, development and behavior. Mouse mesoderm-specific transcript (MEST) has been identified as an imprinted gene and mapped to an imprinted region of mouse chromosome 6 (MMU6). It plays essential roles in embryonic and placental growth, and it is required for maternal behavior in adult female mouse. Here, we isolated the porcine MEST gene and detected a single nucleotide polymorphism in the 3 -untranslated region. The RsaI polymorphism was used to investigate the allele frequencies in different pig breeds and the imprinting status in prenatal porcine tissues. Allele frequencies were significantly different between the native Chinese and Landrace breeds, except that most of the native Yushan pigs (21/26) are heterozygous at this locus. The results indicate that MEST was imprinted in placentas on days 75 and 90 of gestation as well as in the 75 d fetal heart, muscle, kidney, lung and liver.
Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
Chenchang
C
XU
Lijie
L
SU
Quanyong
Q
ZHOU
Changchun
C
LI
Shuhong
S
ZHAO
D020413:3' Untranslated Regions; D000483:Alleles; D000595:Amino Acid Sequence; D000818:Animals; D018076:DNA, Complementary; D020224:Expressed Sequence Tags; D005260:Female; D005333:Fetus; D005787:Gene Frequency; D018392:Genomic Imprinting; D005865:Gestational Age; D006579:Heterozygote; D008969:Molecular Sequence Data; D010802:Phylogeny; D010929:Placentation; D020641:Polymorphism, Single Nucleotide; D011247:Pregnancy; D017433:Protein Structure, Secondary; D011506:Proteins / Q000032:analysis* / Q000737:chemistry / Q000235:genetics*; D017386:Sequence Homology, Amino Acid; D034421:Sus scrofa / Q000235:genetics*
D020413:3' Untranslated Regions; D018076:DNA, Complementary; D011506:Proteins; C103637:mesoderm specific transcript protein