title: MBTD1 is associated with Pr-Set7 to stabilize H4K20me1 in mouse oocyte meiotic maturation.
abstract: H4K20me1 is a critical histone lysine methyl modification in eukaryotes. It is recognized and "read" by various histone lysine methyl modification binding proteins. In this study, the function of MBTD1, a member of the Polycomb protein family containing four MBT domains, was comprehensively studied in mouse oocyte meiotic maturation. The results showed that depletion of MBTD1 caused reduced expression of histone lysine methyl transferase Pr-Set7 and H4K20me1 as well as increased oocyte arrest at the GV stage. Increased γH2AX foci were formed, and DNA damage repair checkpoint protein 53BP1 was downregulated. Furthermore, depletion of MBTD1 activated the cell cycle checkpoint protein Chk1 and downregulated the expression of cyclin B1 and cdc2. MBTD1 knockdown also affected chromosome configuration in GV stage oocytes and chromosome alignment at the MII stage. All these phenotypes were reproduced when the H4K20 methyl transferase Pr-Set7 was depleted. Co-IP demonstrated that MBTD1 was correlated with Pr-Set7 in mouse oocytes. Our results demonstrate that MBTD1 is associated with Pr-Set7 to stabilize H4K20me1 in mouse oocyte meiotic maturation.
authors.affiliation: State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Yi-Bo
authors.initials: YB
authors.lastname: Luo
authors.forename: Jun-Yu
authors.initials: JY
authors.lastname: Ma
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Zhang
authors.forename: Fei
authors.initials: F
authors.lastname: Lin
authors.forename: Zhong-Wei
authors.initials: ZW
authors.lastname: Wang
authors.forename: Lin
authors.initials: L
authors.lastname: Huang
authors.forename: Heide
authors.initials: H
authors.lastname: Schatten
authors.forename: Qing-Yuan
authors.initials: QY
authors.lastname: Sun
mesh_terms: D000782:Aneuploidy; D000818:Animals; D000071877:Checkpoint Kinase 1; D002868:Chromosomal Proteins, Non-Histone / Q000378:metabolism; D002875:Chromosomes / Q000502:physiology; D056744:Cyclin B1 / Q000378:metabolism; D051357:Cyclin-Dependent Kinase 2 / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000378:metabolism; D015536:Down-Regulation; D005260:Female; D011495:Histone-Lysine N-Methyltransferase / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D006657:Histones / Q000378:metabolism*; D008540:Meiosis; D051379:Mice; D009865:Oocytes / Q000378:metabolism; D011494:Protein Kinases / Q000378:metabolism; D034622:RNA Interference; D034741:RNA, Small Interfering / Q000378:metabolism; D012097:Repressor Proteins / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D000071857:Tumor Suppressor p53-Binding Protein 1
chemical_list: D000071877:Checkpoint Kinase 1; D002868:Chromosomal Proteins, Non-Histone; D056744:Cyclin B1; D051357:Cyclin-Dependent Kinase 2; D004268:DNA-Binding Proteins; D011495:Histone-Lysine N-Methyltransferase; D006657:Histones; D011494:Protein Kinases; D034741:RNA, Small Interfering; D012097:Repressor Proteins; D000071857:Tumor Suppressor p53-Binding Protein 1; C498302:Trp53bp1 protein, mouse; C556963:hemp protein, mouse; C529566:KMT5a protein, mouse; C000605869:Chek1 protein, mouse
keywords: H4K20me1; MBTD1; Pr-Set7; meiotic maturation; oocyte