ライフサイエンスコーパス: sperm cell

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

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

3 crystalline DNA packaging in most vertebrate sperm cells.

4 of two dominant ion currents of capacitated sperm cells.

5 omoters that would direct gene expression in sperm cells.

6 stabilize the chromatin of mature mammalian sperm cells.

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

8 n development and later partitioned into the sperm cells.

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

10 electin on the acrosomal membrane of porcine sperm cells.

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

12 transcripts can silence TE reporters in the sperm cells.

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

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

15 e specifically in postmeiotic spermatids and sperm cells.

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

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

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

19 ive cell also contributes transcripts to the sperm cells.

20 etative cell but predominantly translated in sperm cells.

21 nication between the vegetative cell and the sperm cells.

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

23 tube differentiation required for release of sperm cells.

24 ranscription factors produces pollen without sperm cells.

25 somes formed the same centromere clusters in sperm cells.

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

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

28 Sperm cells acquire hyperactivated motility as they asce

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

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

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

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

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

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

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

36 2 (At5g49150) promoter is active only in the sperm cells and in the progenitor generative cell, but n

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

52 Sperm cells are quiescent in the male reproductive syste

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

70 premature spermatid activation and numerous sperm cell defects.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

119 Sperm cells of angiosperms have lost their motility and

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

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

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

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

124 Sperm cells of seed plants have lost their motility and

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

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

127 732 distinct gene sequences were detected in sperm cells, of which 1668 were not expressed in pollen

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

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

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

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

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

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

134 Sperm cell release from the pollen tube occurs after int

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

176 Sperm cell transcripts present at fusion may be transmit

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

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

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

180 = 0.05), while the number of dead and defect sperm cells was 27% (p = 0.07) and 15% (p = 0.33) higher

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

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

183 Mouse sperm cells were introduced into the chemotaxis chamber

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

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

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

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

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

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

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

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