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Direct production of XY(DMY-) sex reversal female medaka (Oryzias latipes) by
embryo microinjection of TALENs
#MMPMID26365677
Luo D
; Liu Y
; Chen J
; Xia X
; Cao M
; Cheng B
; Wang X
; Gong W
; Qiu C
; Zhang Y
; Cheng CH
; Zhu Z
; Hu W
Sci Rep
2015[Sep]; 5
(?): 14057
PMID26365677
show ga
Medaka is an ideal model for sex determination and sex reversal, such as XY
phenotypically female patients in humans. Here, we assembled improved TALENs
targeting the DMY gene and generated XY(DMY-) mutants to investigate gonadal
dysgenesis in medaka. DMY-TALENs resulted in indel mutations at the targeted loci
(46.8%). DMY-nanos3UTR-TALENs induced mutations were passed through the germline
to F1 generation with efficiencies of up to 91.7%. XY(DMY-) mutants developed
into females, laid eggs, and stably passed the Y(DMY-) chromosome to next
generation. RNA-seq generated 157 million raw reads from WT male (WT_M_TE), WT
female (WT_F_OV) and XY(DMY-) female medaka (TA_F_OV) gonad libraries.
Differential expression analysis identified 144 up- and 293 down-regulated genes
in TA_F_OV compared with WT_F_OV, 387 up- and 338 down-regulated genes in TA_F_OV
compared with WT_M_TE. According to genes annotation and functional prediction,
such as Wnt1 and PRCK, it revealed that incomplete ovarian function and reduced
fertility of XY(DMY-) mutant is closely related to the wnt signaling pathway. Our
results provided the transcriptional profiles of XY(DMY-) mutants, revealed the
mechanism between sex reversal and DMY in medaka, and suggested that XY(DMY-)
medaka was a novel mutant that is useful for investigating gonadal dysgenesis in
phenotypic female patients with the 46, XY karyotype.
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