Related Experiment Video
Updated: Aug 6, 2026
12:25
Cell-Specific Paired Interrogation of the Mouse Ovarian Epigenome and Transcriptome
Published on: February 24, 2023
Theca cells: active orchestrators of ovarian aging
Hongbo Wu1, Zhao Zhang2, Qianyi Huang1
1The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Reproductive Biology and Endocrinology : RB&E
|July 21, 2026
Summary
Theca cell dysfunction significantly drives ovarian aging by impairing estrogen production and accelerating follicle loss. Targeting theca cells offers new therapeutic strategies for reproductive health issues.
Area of Science:
- Reproductive biology
- Endocrinology
- Cellular aging
Background:
- Ovarian aging involves follicular reserve depletion and endocrine dysfunction.
- Theca cells, crucial for androgen production, have been overlooked in aging research.
- Theca cell dysfunction impacts estrogen synthesis and overall ovarian function.
Purpose of the Study:
- To investigate the role of theca cells in ovarian aging.
- To elucidate the molecular mechanisms underlying theca cell aging.
- To explore therapeutic strategies targeting theca cells for reproductive health.
Main Methods:
- Single-cell transcriptomic analysis to identify age-dependent changes in theca cells.
- Investigation of molecular pathways involved in theca cell senescence and dysfunction (e.g., CDKN1A, NF-κB, FOXP1, GSK3β, PTEN/PI3K/Akt/FOXO1).
- Review of preclinical therapeutic interventions for restoring theca cell function.
Main Results:
- Theca cells exhibit quantitative decline, transcriptional reprogramming, and steroidogenic impairment with age.
- Senescent theca cells release pro-inflammatory mediators that accelerate follicular atresia.
- Molecular mechanisms include mitochondrial dysfunction and dysregulation of key signaling pathways.
Conclusions:
- Theca cells are critical, active participants in ovarian aging, not just upstream regulators.
- Theca cell dysfunction contributes to conditions like premature ovarian insufficiency and PCOS.
- Targeting theca cells presents a promising avenue for future translational research in reproductive medicine.
Related Concept Videos
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...
01:22Oogenesis
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...
01:30Hormonal 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...
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...
01:27Ovarian 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...
02:15Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...