ライフサイエンスコーパス: sperm cell

1 lagellum with a net linear propulsion of the sperm cell.

2 tone H3 at the same genomic location in most sperm cell.

3 etectable fluorescent protein signals in the sperm cell.

4 res and centromeres in the mid region of the sperm cell.

5 ctively disrupting the motility of X-bearing sperm cells.

6 of two dominant ion currents of capacitated sperm cells.

7 omoters that would direct gene expression in sperm cells.

8 stabilize the chromatin of mature mammalian sperm cells.

9 ative cell that is the progenitor of the two sperm cells.

10 n development and later partitioned into the sperm cells.

11 aster and of being able to fuse with several sperm cells.

12 electin on the acrosomal membrane of porcine sperm cells.

13 sperad but does result in its loss from the sperm cells.

14 dergoes a second mitosis to give rise to two sperm cells.

15 ollen vegetative cell that encircles the two sperm cells.

16 generation of STR profiles for the isolated sperm cells.

17 segmentation, localization, and tracking of sperm cells.

18 ectopic migration of C. macrosperma's giant sperm cells.

19 notype, and an altered thiol redox status in sperm cells.

20 d in male infertility and failure to produce sperm cells.

21 crystalline DNA packaging in most vertebrate sperm cells.

22 ranscription factors produces pollen without sperm cells.

23 somes formed the same centromere clusters in sperm cells.

24 transcripts can silence TE reporters in the sperm cells.

25 n is to generate and load TE siRNAs into the sperm cells.

26 e specifically in postmeiotic spermatids and sperm cells.

27 hyte (embryo sac) and its rupture to release sperm cells.

28 revent the fusion of egg cells with multiple sperm cells.

29 ision of the germ cell to generate a pair of sperm cells.

30 ive cell also contributes transcripts to the sperm cells.

31 etative cell but predominantly translated in sperm cells.

32 nication between the vegetative cell and the sperm cells.

33 tain a large vegetative cell and two smaller sperm cells.

34 tube differentiation required for release of sperm cells.

35 In sperm cells, 24-nt siRNAs were spread across heterochrom

36 This localization of function makes the sperm cell a useful model to investigate the structural

37 re it terminates its growth and delivers the sperm cells, a poorly understood process called pollen-t

38 a radical process of differentiation whereby sperm cells acquire a compact and specialized morphology

39 Sperm cells acquire hyperactivated motility as they asce

40 Given limited resources for motility, sperm cell activation must be precisely timed to ensure

41 ssociated with immobile dysmorphic and fewer sperm cells after 5 months of age.

42 litate stable upstream swimming of mammalian sperm cells along solid surfaces, suggesting a robust ph

43 the advantage of using virtual staining for sperm cell analysis.

44 on with the sperm that serves to capture the sperm cell and bring it into close contact with the oocy

45 ion of a zygote via the fusion of an egg and sperm cell and its subsequent asymmetric division herald

46 Furthermore, both the sperm cell and the pollen vegetative cell were deficient

47 This approach exploits the haploid nature of sperm cells and employs a combination of genotyping and

48 lowed us to efficiently analyze thousands of sperm cells and identify correlations between dry-mass c

49 2 (At5g49150) promoter is active only in the sperm cells and in the progenitor generative cell, but n

50 which often suffer from the low recovery of sperm cells and labor-intensive steps.

51 AtGEX1 (At5g55490) promoter is active in the sperm cells and not in the progenitor generative cell or

52 ion on chromosome 1 by genotyping individual sperm cells and oocytes.

53 We isolated living egg cells, sperm cells and pollen vegetative cells from Oryza sativ

54 fficiency on particle concentration for both sperm cells and polymeric beads.

55 ost from retrotransposons in microspores and sperm cells and restored by de novo DNA methyltransferas

56 has previously been shown to be expressed in sperm cells and some sporophytic tissues.

57 en for molecules that change the motility of sperm cells and their ability to fertilize.

58 ynergid cells, culminating in release of two sperm cells and their fusion with the egg and central ce

59 o coordinate successful interaction with the sperm cells and their transport vehicle, the pollen tube

60 hat the surface scattering of both mammalian sperm cells and unicellular green algae is primarily gov

61 and pharmacological investigation of mature sperm cells and will permit rapid advances in our unders

62 the green alga Chlamydomonas reinhardtii, on sperm cells, and on cells that line the trachea and fall

63 delivered to the female bound directly onto sperm cells, and second, that its subsequent release has

64 channel is present in mouse, rat, and human sperm cells, and the gene is found on chromosome 2 E5-F1

65 gly, the up-regulated genes expressed in the sperm cells appeared to reflect the expected post-fusion

66 Understanding how and when sperm cells are attracted to the egg could have profound

67 After pollination, a pair of sperm cells are delivered into the embryo sac by pollen

68 it is the mechanism through which nonmotile sperm cells are delivered to ovules, thus allowing ferti

69 ves like the wild type and demonstrates that sperm cells are dispensable for normal pollen tube devel

70 g plants, the vegetative nucleus and the two sperm cells are proposed to form a functional assemblage

71 Sperm cells are quiescent in the male reproductive syste

72 In angiosperms, two sperm cells are transported and delivered by the pollen

73 The sperm cells are uniquely ellipsoid in shape, although it

74 Moreover, the released mutant sperm cells are vulnerable and rupture before double fer

75 Motile male gametes (sperm cells) are an ancestral eukaryotic trait that has

76 ting the rolling dynamics of freely swimming sperm cells around their longitudinal axis.

77 ent is associated with pollen tube burst and sperm cell arrival.

78 V(H) region), through use of single haploid sperm cells as subjects.

79 We demonstrate this approach for human sperm cells, as there is a well-established protocol and

80 hese processes will lead to a lack of mature sperm cells (azoospermia), which is a major cause of mal

81 In mammals, sperm cells become motile during ejaculation and swim up

82 eneficial to decode the genetics of a single sperm cell before conceptus generation.

83 ons play a primary role in the regulation of sperm cell behavior.

84 sults define several crucial roles of PKA in sperm cell biology, bringing together both known and uni

85 ring point and consequently a hyperactivated sperm cell bound to an epithelial surface need not alway

86 In this study, sperm cell bundles collected from male monarch butterfli

87 : SSP transcripts accumulate specifically in sperm cells but are translationally silent.

88 en vegetative nucleus, which accompanies the sperm cells but does not provide DNA to the fertilized z

89 t localize to cytosol and plasma membrane of sperm cells but to the pollen endo-plasma membrane (endo

90 highly conserved genes appear common to all sperm cells, but evidence is still emerging that another

91 HMGB proteins that has been characterized in sperm cells, but little is known about its functions in

92 ertilization of an egg cell by more than one sperm cell can produce viable progeny in a flowering pla

93 sher-type microswimmers such as bacteria and sperm cells, can be transferred to puller-type algae and

94 tyrosine phosphorylation (pY) development in sperm cells capacitated in vitro and in vivo.

95 pollen tube and the female tissues until the sperm cell cargo is ultimately released.

96 tempts in the past two decades to understand sperm cell channels have been frustrated by the difficul

97 for the bull protamine.DNA complex in native sperm cell chromatin that provides an explanation for th

98 stones are replaced by protamines to remodel sperm cell chromatin.

99 with the lowest sensitivity being the mature sperm cells closest to the lumen of the tubule.

100 angiosperms, sexual reproduction requires a sperm cell, contained within a pollen tube, to fertilize

101 Sperm-cell-containing samples with volumes up to 300 muL

102 In mature pollen, the larger sperm cell contains numerous mitochondria, is associated

103 nsgene silencing phenotypes occurring in the sperm cell could mislead the interpretation of experimen

104 premature spermatid activation and numerous sperm cell defects.

105 ts, double fertilization requires successful sperm cell delivery into the female gametophyte followed

106 y subunits in capacitated vs. noncapacitated sperm cells demonstrates its suitability as a biomarker

107 In flowering plants, sperm cells develop in the pollen cytoplasm and are tran

108 In flowering plants, immotile sperm cells develop within the pollen grain and are deli

109 t impact of TAL deficiency on late stages of sperm-cell development, affecting the electron-transport

110 of the cytoplasmic protein transgenes in the sperm cell did not affect the expression of either its e

111 chrome c and caspases function in Drosophila sperm cell differentiation and indicates that caspase ac

112 actor DUO1 to specify male germline fate and sperm cell differentiation.

113 us on histone butyrylation in the context of sperm cell differentiation.

114 cient and automated tool to achieve purified sperm cells directly from raw semen samples for assisted

115 body, but it has also been shown to protect sperm cells during cryopreservation due to its micellar

116 s (Arabidopsis thaliana) contain two haploid sperm cells enclosed in a haploid vegetative cell.

117 e cell, which forms the pollen tube, and two sperm cells enclosed within the vegetative cell.

118 g may have contributed to the evolution of a sperm cell equivalent to female polar bodies.

119 In the sperm cell, exocytosis occurs synchronously at a distinc

120 During spermatogenesis, sperm cells express an isoform of TFAM, which retains th

121 fully fuses with the egg cell but the second sperm cell fails to fuse with the central cell, resultin

122 both in spermatogenesis: FOG-1 specifies the sperm cell fate and CPB-1 executes that decision.

123 nsure that pollen tubes burst to deliver the sperm cells for double fertilization.

124 ptive synergid and PT rupture, releasing the sperm cells for double fertilization.

125 DDM1 and acts as a placeholder nucleosome in sperm cells for epigenetic inheritance.

126 aracterizing the morphology of stained human sperm cells for fertility evaluation, but, on the other

127 ARTs), as it can allow specific selection of sperm cells for in vitro fertilization (IVF).

128 , the pollen tube stops growing and releases sperm cells for successful fertilization.

129 e useful for manipulating gene expression in sperm cells, for localization and functional analyses of

130 s and implicates gene repression pathways in sperm cell formation and fertility.

131 roved separation method for the isolation of sperm cells from dilute, "large volume" samples containi

132 spiral (MDDS) device to effectively isolate sperm cells from other non-sperm seminal cells (e.g., le

133 la (tail)-beating and stability to transport sperm cells from testes to the eggs.

134 , low flow rates can be used to separate the sperm cells from the epithelial cell-containing biologic

135 ata indicate that vacuoles of vegetative and sperm cells functionally interact and contribute to male

136 Egg and sperm cells (gametes) of the mouse are derived from a fo

137 tional testis-specific PDH2 is important for sperm cells generating nearly all their energy from carb

138 We find that the sperm cell has widespread apparent chromatin bivalency,

139 f transcription factors that is expressed in sperm cells, has a key role in this process.

140 Here, we investigated whether all sperm cells have a common epigenetic configuration that

141 nspherical cells, such as red blood cells or sperm cells, however, pose a challenge as they reduce th

142 atSper3 or CatSper4 also abrogated ICatSper, sperm cell hyperactivated motility and male fertility bu

143 ubunit genes (CatSpers 1-4) are required for sperm cell hyperactivation and male fertility.

144 piece of the sperm tail and is required for sperm cell hyperactivation and male fertility.

145 We present simulation models for sperm cell image and swimming modes observed in real 2D

146 ly purified and concentrated (up to tenfold) sperm cells in a rapid and fully-automated manner (~ 10

147 The production of the sperm cells in angiosperms requires coordination of cell

148 c beads required to seed the trapping event, sperm cells in dilute solution are trapped as a result o

149 des observed in real 2D (top-down) images of sperm cells in laboratory specimen.

150 We clinically assess the DNA integrity of sperm cells in raw human semen samples.

151 algorithms for segmentation and tracking of sperm cells in semen images.

152 rilization system to selectively ablate male sperm cells in the malaria mosquito Anopheles gambiae.

153 he ADE method relies on acoustic trapping of sperm cells in the presence of epithelial cell lysate (w

154 ction to quantify the response of individual sperm cells in time-varying flow fields.

155 of their cytoplasm to form spermatozoa (the sperm cells) in a developmental cascade termed spermioge

156 enome-wide expression patterns in angiosperm sperm cells indicate common and divergent themes in the

157 cell, whereas the pollen grain contains two sperm cells inside a supporting vegetative cell.

158 s, appeared to be present exclusively in the sperm cells inside mature pollen, but were already prese

159 Pollen grains protect the sperm cells inside them with the help of the unique cell

160 Transport of the pollen tube cell and the sperm cells involves a cell adhesion and migration event

161 The sea urchin sperm cell is an advantageous model for studying ligand-

162 The indentation of a bovine sperm cell is used to test the validity of this model, a

163 The defect that we identify in the null sperm cells is a failure to acquire hyperactivated motil

164 The DNA of most vertebrate sperm cells is packaged by protamines.

165 to show that ICSI in humans, using headneck sperm cells, is viable and could be an alternative for i

166 Ascaris sperm cells lack actin and associated motors, and depoly

167 rnal egg and central cells with two paternal sperm cells, leading to the formation of embryo and endo

168 gnificant increase in the number of immature sperm cells (mainly MGCs, spermatids, and spermatocytes)

169 because the hTSH2B "positive" and "negative" sperm cells may undergo significantly different deconden

170 hese data reveal an essential role of TAL in sperm-cell mitochondrial function and, thus, male fertil

171 In sperm cells, most histones are replaced by protamines to

172 In nematode sperm cell motility, major sperm protein (MSP) filament

173 Mammalian sperm cells must respond to cues originating from along

174 undergo mitosis II, which generates the two sperm cells needed for double fertilization.

175 n, including an unexpected expression in the sperm cell of genes associated with active chromatin.

176 e fertilization of the embryo sac by the two sperm cells of a pollen grain initiates seed development

177 Sperm cells of angiosperms have lost their motility and

178 Plastid DNA is absent in pollen or sperm cells of Arabidopsis thaliana.

179 e S phase of the cell cycle are expressed in sperm cells of developing pollen grains and pollen tubes

180 nimals and early land plants, the non-motile sperm cells of flowering plants are carried in the polle

181 Sperm cells of flowering plants lack protamines, yet the

182 ng of intestinal epithelial cells (IECs) and sperm cells of males of the F0 generation, which receive

183 Sperm cells of rice (Oryza sativa) were isolated from fi

184 Sperm cells of seed plants have lost their motility and

185 l cells of the corpus luteum, and Leydig and sperm cells of the testis.

186 nvironmental desiccation and recovery on the sperm cells of three moss species (Bryum argenteum, Camp

187 732 distinct gene sequences were detected in sperm cells, of which 1668 were not expressed in pollen

188 ation, leading to the generation of headneck sperm cells or headnecks composed of heads with necks an

189 tin filaments straightens and extends from a sperm cell, penetrating the vitelline layer surrounding

190 on arrival, the pollen tube releases the two sperm cells, permitting double fertilization to take pla

191 This transgene silencing in the sperm cell persisted in mutants of the major gene silenc

192 geneous retention of methylated histone in a sperm cells population.

193 In sperm cells, protamine replaces histones to compact DNA

194 he current understanding of the processes of sperm cell reception, gamete interaction, their pre-fert

195 These data suggest that the ASGP-R on human sperm cells recognizes and binds wild-type gonococcal LO

196 h showed excellent performance with ~ 80% of sperm cell recovery, and > 99.95% and > 98% removal of 1

197 The expression profiles of dimorphic sperm cells reflect a diverse and broad complement of ge

198 ial pollen tube attraction and inhibition of sperm cell release can act as barriers to heterospecific

199 ophyte, which causes pollen tube rupture and sperm cell release during fertilization.

200 Sperm cell release from the pollen tube occurs after int

201 s its target to an abrupt disintegration for sperm cell release inside the female gametophyte is puzz

202 , an Arabidopsis thaliana mutant impaired in sperm cell release, reminiscent of the feronia/sirene mu

203 Human sperm cells rely on an unusual type of potassium ion cha

204 gametophyte and pollen, in which the egg and sperm cells, respectively, are generated.

205 cific for the vacuoles of the vegetative and sperm cells, respectively.

206 of the egg cell and the central cell by two sperm cells, resulting in the formation of the embryo an

207 eep neural network can take images of unseen sperm cells retrieved from holograms acquired without st

208 Ejaculated CatSperz-null sperm cells retrieved from the mated female uterus parti

209 cyclase (sAC) signaling pathway in sNHE-null sperm cells reveal that sNHE is required for the express

210 ece (0.8 fg) and head (0.2 fg) of individual sperm cells, revealing the ability of sperm cells to han

211 Genomic assay of sperm cell RNA provides insight into functional control,

212 The other, plastid-enriched sperm cell (S(ua)) fuses with the egg cell, forming the

213 Instead of evolving self-propelled sperm cells (SCs), plants use pollen tubes to deliver SC

214 l-autonomous osmoregulation in adjusting the sperm cell shape for successful double fertilization in

215 , we show that in glc mutant embryo sacs one sperm cell successfully fuses with the egg cell but the

216 more abundant in tricellular pollen than in sperm cells, suggesting that these transcripts were also

217 and how the role of some recently discovered sperm cell surface and secreted proteins contribute to o

218 the effective progesterone analogues and the sperm cell surface progesterone receptor across the beta

219 ere found to be only weak stimulators of the sperm cell surface receptor.

220 ng site and the corresponding protein on the sperm cell surface that recognizes this ligand.

221 Izumo1 is an essential sperm cell-surface protein, but its receptor on the egg

222 pecific distinct areas in the nucleus of the sperm cell that may be altered in males with disrupted s

223 the production of highly specialized motile sperm cells that can navigate to and fertilize ova.

224 Ts; male gametophytes) carrying two immobile sperm cells that grow over long distances through the ca

225 zeylanica produces cytoplasmically dimorphic sperm cells that target the egg and central cell during

226 a calibrated microprobe in the beat path of sperm cells that were stuck by their heads to a glass mi

227 ploid cell types from developing pollen: the sperm cell, the vegetative cell, and their precursor, th

228 Following release of the two sperm cells, they interact and fuse with two dimorphic f

229 tively promotes its own fertilization by the sperm cell through a signaling mechanism involving produ

230 eads to stable upstream spiralling motion of sperm cells, thus providing a generic and robust rectifi

231 and play a vital role in the ability of the sperm cell to reach and fertilise the egg.

232 ion signalling is, therefore, essential for sperm cells to adapt to their constantly changing enviro

233 d cation/H(+) exchangers specifically causes sperm cells to become spheroidal in hydrated pollens of

234 hich elongates through the pistil to deliver sperm cells to female gametes for double fertilization.

235 rains are the male gametophytes that deliver sperm cells to female gametophytes during sexual reprodu

236 vidual sperm cells, revealing the ability of sperm cells to handle the amounts of this element well a

237 In vitro binding of porcine acrosome-reacted sperm cells to oocytes was found to be Ca2+ dependent an

238 ants that need precise regulation to deliver sperm cells to ovules for fertilization.

239 he GLR genes GLR1 and GLR2 causes failure of sperm cells to target the female reproductive organs.

240 len tube (PT) for the successful delivery of sperm cells to the embryo sac.

241 r pollen tube (PT) [5] carries two nonmotile sperm cells to the female gametophyte (FG) or embryo sac

242 r outgrowth of a pollen tube, which delivers sperm cells to the female gametophyte to effect double f

243 eproduction requires precise delivery of the sperm cells to the ovule by a pollen tube.

244 ses that convey the pollen tube cell and the sperm cells to the ovule.

245 ermination, tube growth, and delivery of the sperm cells to the ovule.

246 as essential for the proper delivery of the sperm cells to the ovule.

247 n the female reproductive tissues to deliver sperm cells to the ovules for fertilization.

248 Instead, they are delivered via the sperm cells to the zygote and the endosperm, where SSP p

249 ariation among individuals within species in sperm cell tolerance to environmental desiccation was ob

250 An example is given of sperm cell tracking on simulated semen images of cells u

251 The egg cell and sperm cell transcriptomes reveal major differences in ge

252 Sperm cell transcripts present at fusion may be transmit

253 e flower that support pollen tube growth and sperm cell transfer along the transmitting tract of the

254 transgene silencing in Arabidopsis thaliana sperm cells; transgenes encoding proteins with no specif

255 hamster ovary cells (CHOs) and motile human sperm cells under continuous-wave (CW) and pulsed-mode t

256 pollen vegetative nurse cell surrounding the sperm cells undergoes a programmed heterochromatin decon

257 n in flowering plants (angiosperms), egg and sperm cells unite to form the zygote, which generates an

258 ter for the production of specialized cells, sperm cells, using mating experiments.

259 To determine the post-cryopreservation sperm cell viability, a subsample of preserved sperm bun

260 = 0.05), while the number of dead and defect sperm cells was 27% (p = 0.07) and 15% (p = 0.33) higher

261 (2)-induced superoxide production by primary sperm cells was mediated by the non-receptor tyrosine ki

262 Moreover, porcine sperm cells were found to be capable of binding to human

263 Mouse sperm cells were introduced into the chemotaxis chamber

264 * We found that a fraction of sperm cells were tolerant to environmental desiccation f

265 When single sperm cells were used, 91.88% of the SNPs were detectabl

266 Slo3 is specifically expressed in mammalian sperm cells, where it gives rise to pH-dependent outward

267 the pollen grain wall, separate from the two sperm cells, whereas in MGU displaced (mud) mutants, the

268 principal effectors of male-induced harm are sperm cells, which induce sterility and shorten lifespan

269 llen tube rupture and thereby the release of sperm cells, while PCD/degeneration of the other synergi

270 migration, recognition and fusion of the two sperm cells with two female gametes.

271 bilization, finding an average of 1 per ~150 sperm cells, with >10-fold difference between animals.

272 hyte) extends a pollen tube that carries two sperm cells within its cytoplasm to the embryo sac.

273 at undergoes cell death and releases its two sperm cells within the degenerating synergid cytoplasm t

274 Cryopreserved sperm cells would provide a reserve of monarch germplasm

275 nd mechanical constraints of the cell walls, sperm cells wrapped inside the cytoplasm of a pollen veg