545
O
Oocyte, 8–11, 489
fully grown mouse, 512
growth, 6, 7
mammalian, 493, 500
maturation
APC, 9, 11
cyclic adenosine monophosphate
(cAMP), 8
cytostatic factor (CSF), 9, 10
luteinizing hormone (LH), 8
WEE1B and MYT1, 8
OET (see Oocyte-to-embryo transition
(OET))
small RNA population, 497
Xenopus, 497, 498, 512
zebrafish, 493
Oocyte polarity, 175–178, 180, 181, 184
animal-vegetal, 182–184
Bb, 182
Bb precursors, localization, 184
cytoplasmic bridges, 183
embryonic body axes
dorsal determinants, 175
zebrafish Wnt8, 176
genetic entry points
buc, 184
macf1, 184
germ cell determinants, 178–180
germ layer formation
ectoderm, 176
endoderm, 177
gastrulation, 177
mesoderm, 177
Veg T, 177, 178
nuclear cleft, 183
sperm entry region
acrosome, 181
mouse, 180
polyspermy, 181
zebrafish, 181
zygotene stage, 183
Oocyte-to-embryo transition (OET)
diversity of vertebrate egg morphology,
491, 492
fertilization triggers, 491
MZT, 490
resumption of meiosis, 491
self-sufficient embryo, 491
timescales of vertebrate, 492
transcriptional quiescence, 491
vertebrate, 489, 490, 492
zygotic expression, 491
Oogenesis, 3, 6–11, 386, 389, 407
cyst, 182
follicle assembly, 5–6
germ line stem cell, 182
germline (see Primordial germ cells
(PGCs))
meiotic division, 182
mitochondrial cloud, 3
oocyte, 2
growth, 6–7
maturation, 7–11, 50–52
oogonia, 5
Xenopus laevis, 3
Organizer experiment, 247
Ovulation, 12
P
Pachytene piRNAs, 499
Parental epigenetic marks
DNA methylation, 514–517
DNA sequence, 514
histone marks, 514
histone modifications, 517–518
maternal chromatin modifications, OET,
519–520
molecular mechanisms, 514
primordial germ cells, 515
protamine/histone exchange,
spermatogenesis, 518
reprogramming, 515
PGC induction
axolotl embryos, 420
FGF, 420
germ plasm, 417
last cell standing hypothesis, 421
tailbud stage embryos, 419
totipotent cells, 418
vertebrates, 420
Phosphoprotein phosphatases (PPPs), 91
Piwi proteins, 410
PIWI-associated RNA (piRNA), 496,
499–500
Placental mammals/eutherians, 318, 319
Pluripotency, 473, 475
Pluripotent gene expression, 424–425
Pole regulator Oskar (Osk), 192
Polo-like kinase 1 (Plk1), 90, 94, 97
Poly(A) RNA, 502–503
Polysomes, 195
Polyspermy, 181
Postacrosomal sheath WW domain-binding
protein (PAWP), 26
Index