Related Experiment Video

Updated: May 21, 2026

In Vivo and Ex Vivo Approaches to Study Ovarian Cancer Metastatic Colonization of Milky Spot Structures in Peritoneal Adipose
13:04

In Vivo and Ex Vivo Approaches to Study Ovarian Cancer Metastatic Colonization of Milky Spot Structures in Peritoneal Adipose

Published on: October 14, 2015

BRCA1 regulates follistatin function in ovarian cancer and human ovarian surface epithelial cells

Tejaswita M Karve1, Anju Preet, Rosie Sneed

  • 1Department of Oncology, Georgetown University Medical Center, Washington, DC, United States of America.

Plos One
|June 12, 2012
PubMed

Insights

Breast cancer susceptibility gene 1 (BRCA1) regulates follistatin (FST) secretion and Activin expression in ovarian cells. BRCA1 influences FST levels, impacting ovarian cancer cell proliferation and migration.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gynecology

Background:

  • Follistatin (FST) antagonizes Activin, which is elevated in ovarian carcinoma.
  • The role of breast cancer susceptibility gene 1 (BRCA1) in ovarian cancer is not well understood.
  • BRCA1 is a known tumor suppressor in breast cancer.

Purpose of the Study:

  • To investigate the role of BRCA1 in regulating FST and Activin expression in ovarian cells.
  • To determine the functional significance of BRCA1-mediated regulation of FST and Activin in ovarian cancer.
  • To explore BRCA1 as a potential therapeutic target for ovarian cancer.

Main Methods:

  • Microarray analysis of SKOV3 ovarian carcinoma cells overexpressing BRCA1.
  • Investigation of BRCA1's effect on FST secretion in immortalized ovarian surface epithelial (IOSE) cells.
  • BRCA1 and FST knock-down experiments in IOSE and SKOV3 cell lines.

Main Results:

  • BRCA1 overexpression stimulated FST secretion and inhibited Activin expression in SKOV3 cells.
  • BRCA1 knock-down in normal IOSE cells down-regulated FST and up-regulated Activin.
  • FST knock-down significantly reduced cell proliferation and migration in both IOSE and SKOV3 cells.

Conclusions:

  • BRCA1 acts as a novel regulator of FST expression and function in human ovarian cells.
  • BRCA1's regulation of FST and Activin pathways may have implications for ovarian cancer therapy.
  • Findings suggest a potential link between BRCA1, FST, and ovarian cancer progression.

More Related Videos

Silencing of BRCA2 to Identify Novel BRCA2-regulated Biological Functions in Cultured Human Cells09:24

Silencing of BRCA2 to Identify Novel BRCA2-regulated Biological Functions in Cultured Human Cells

Published on: August 12, 2015

Human Ovarian Surface Epithelium Organoids as a Platform to Study Tissue Regeneration07:37

Human Ovarian Surface Epithelium Organoids as a Platform to Study Tissue Regeneration

Published on: August 16, 2024

Related Concept Videos

The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

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...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

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...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Hormonal Control of the Ovarian Cycle01:30

Hormonal 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...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...