Related Experiment Video
Updated: Jun 17, 2025
07:20
Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
Published on: January 31, 2025
421
RAB37-mediated autophagy guards ovarian homeostasis and function.
Xu Xu1, Mengxin Hu1, Ruhong Ying1
1Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China.
Autophagy
|August 8, 2024
Summary
Loss of Rab37 in oocytes impairs ovarian homeostasis and development by affecting autophagy. Flunarizine treatment and transcription factors E2F1/EGR2 rescue these defects, highlighting RAB37
Area of Science:
- Reproductive Biology
- Cellular Biology
- Molecular Mechanisms
Background:
- Ovarian homeostasis is crucial for female reproductive health, but its regulatory mechanisms remain unclear.
- Dysfunctional ovarian homeostasis is linked to various female diseases.
Purpose of the Study:
- To investigate the role of RAB37 in maintaining ovarian homeostasis and function.
- To elucidate the mechanisms by which RAB37 influences autophagy and follicular development.
Main Methods:
- Conditional knockout (cKO) of the Rab37 gene in mouse oocytes.
- Assessment of autophagy proficiency, follicular homeostasis, and ovary development in knockout and wild-type mice.
- Pharmacological intervention with Flunarizine to modulate autophagy.
- Analysis of transcription factor (E2F1 and EGR2) regulation of Rab37.
Main Results:
- Conditional knockout of Rab37 in oocytes significantly impaired macroautophagy/autophagy in the ovary.
- Rab37 deficiency led to disrupted follicular homeostasis and abnormal ovary development in mice.
- Flunarizine treatment restored autophagy, rescuing follicular homeostasis and ovarian function in Rab37 cKO mice.
- Transcription factors E2F1 and EGR2 were identified as synergistic activators of Rab37 transcription and autophagy.
Conclusions:
- RAB37-mediated autophagy is essential for maintaining ovarian homeostasis and ensuring normal ovary function.
- Targeting RAB37-mediated autophagy presents a potential therapeutic strategy for ovarian dysfunction.
More Related Videos
Related Concept Videos
01:27Autophagy
4.2K
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
4.2K
01:36Delivery Pathways to the Lysosome
6.2K
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
6.2K
01:18Autophagic Cell Death
3.4K
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.4K
02:07Oogenesis
63.6K
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...
63.6K
03:03mTOR Signaling and Cancer Progression
3.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.8K
01:30Apoptosis
11.3K
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
11.3K