综述:孕激素受体膜成分1在牛卵细胞发育和能力方面的假定作用
V Lodde1, A M Luciano1, R Garcia Barros1
1Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, via dell'Università 6, 26900 Lodi, Italy.
Animal : an international journal of animal bioscience
|August 11, 2023
概括
孕激素受体膜成分1 (PGRMC1) 通过帮助卵细胞成熟和细胞分裂,支持生殖发育. 需要进一步的研究来探索其在早期胚胎发育和受精中的作用.
科学领域:
- 生殖生物学 生殖生物学
- 细胞生物学 细胞生物学
- 发育生物学是发展生物学.
背景情况:
- 孕激素受体膜成分1 (PGRMC1) 对于哺乳动物的生殖功能至关重要.
- PGRMC1影响卵巢颗粒细胞的活力,增殖和卵泡生长.
- PGRMC1对于成功的卵细胞成熟至关重要,影响染色体分离和极体挤出.
研究的目的:
- 研究PGRMC1在哺乳动物卵细胞成熟,受精和植入前胚胎发育中的作用.
- 阐明PGRMC1在调节细胞分裂中的保存机制.
- 要突出进一步研究PGRMC1在早期胚胎发生过程中的作用的需要.
主要方法:
- 该研究审查了关于哺乳动物生殖系统中PGRMC1表达和功能的现有证据.
- 它分析了PGRMC1与螺旋装置和细胞分裂中的紫外线激酶B的关联.
- 它确定了关于PGRMC1在植入前胚胎和受精中的作用的知识差距.
主要成果:
- PGRMC1在各种生殖细胞中表达,包括颗粒细胞和卵细胞.
- PGRMC1的功能在控制线粒细胞和介质细胞分裂方面得到保护.
- 改变卵细胞中的PGRMC1功能会导致染色体分离和极体挤出缺陷.
结论:
- 通过保守的机制,PGRMC1在卵细胞成熟和细胞分裂中发挥着重要作用.
- 在植入前胚胎和受精过程中,PGRMC1的确切功能在很大程度上仍未被探索.
- 了解PGRMC1的类功能对于理解哺乳动物的生殖发育至关重要.
相关概念视频
02:07Oogenesis
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
01:27Feedback Regulation of Calcium Concentration
Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
01:27Ovarian Cycle
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
01:22Oogenesis
Oogenesis, the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
01:20Folliculogenesis
Folliculogenesis is the development of ovarian follicles, the specialized structures within the ovarian cortex where oogenesis, or egg development, occurs. This process is essential for female reproductive health and begins during fetal development when primordial follicles are formed. Each primordial follicle comprises a primary oocyte in the center, surrounded by a single layer of squamous pre-granulosa cells. These follicles remain dormant in late prophase I of meiosis until triggered by...
01:30Hormonal Control of the Ovarian Cycle
The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...