関連する実験動画
Updated: Sep 9, 2025

11:13
Using Mouse Oocytes to Assess Human Gene Function During Meiosis I
Published on: April 10, 2018
9.0K
ゾナ・ペルシダのグリコプロテインの遺伝的変異:生育能力とARTの結果への影響
Neha Rajput1, Gagandeep Kaur Gahlay1
1Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
Mutation research. Reviews in mutation research
|September 3, 2025
まとめ
ゾナ・ペルシダ (ZP) 遺伝子の遺伝的変異は,生育能力と助産生殖技術 (ART) の成功に大きな影響を与えます. これらの単一ヌクレオチドポリモルフィズム (SNP) を特定することは不妊症の診断とARTの成果の改善に不可欠です.
科学分野:
- 生殖生物学
- 人間 の 遺伝子
- 助産生殖技術
背景:
- 助産生殖技術 (ART) の成功は卵細胞の健康に大きく依存し,形態学的異常はしばしば治療の失敗を引き起こします.
- 精子と卵の相互作用と胚の保護を媒介する重要な細胞外マトリックスであるゾナ・ペルルシダ (ZP) は,その整合性を受精に不可欠にしています.
研究 の 目的:
- ゾナペルシダのグリコプロテイン遺伝子 (hZP1-4) の単一核酸多形態 (SNPs) が女性の生育能力に与える影響を調査する.
- これらのSNPがZPの構造に及ぼす機能的影響と不妊状態との潜在的な関連を分析する.
主な方法:
- hZP1,hZP2,hZP3およびhZP4遺伝子内のSNPに関する既存のデータの包括的なメタ分析が行われました.
- ZPグリコタンパク質の構造と機能に対する特定されたSNPの機能的予測のために,シリコツールを使用した.
主要な成果:
- 47のSNPがhZP1,17がhZP2,8がhZP3,そして2がhZP4で,主にZP構造領域で特定されました.
- 予測される機能的影響には,ZPグリコタンパク質の分泌,クロスリンク,および繊維の形成が低下し,空の卵泡症候群 (EFS) またはZP異常のような状態を引き起こす可能性があります.
- ZP構造の欠陥は卵細胞の生存能力,ARTの成功率,および卵泡生成に悪影響を及ぼします.
結論:
- ZP遺伝子SNPの遺伝子スクリーニングは,ARTの失敗を経験する女性,特にZP異常を有する女性に対して推奨されます.
- ZP2のN端領域に関するさらなる研究は,ここで検出されていないSNPは,形態学的に正常な卵細胞における精子の相互作用に影響を与える可能性があるため,正当化されています.
関連する概念動画
Genetic Variation
387
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
Genes exist in different versions called alleles,...
387
Fertilization
72.2K
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
72.2K
What is a Species?
46.9K
Overview
46.9K
Genetics of Speciation
19.5K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.5K
Spermatogenesis
103.3K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
103.3K
Infertility in Males
331
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
331

