Targeting the mitogen-activated protein kinase pathway in low-grade serous carcinoma of the ovary

Jennifer McLachlan1, Martin Gore1, Susana Banerjee1

  • 1Gynaecology Unit, The Royal Marsden NHS Foundation Trust, 203 Fulham Road, London, SW3 6JJ, UK.

Pharmacogenomics
|July 30, 2016
PubMed

Insights

Low-grade serous ovarian cancer, a rare subtype, is often resistant to chemotherapy. Selumetinib, a MEK1/2 inhibitor targeting the mitogen-activated protein kinase pathway, shows promise for treating this challenging cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Epithelial ovarian cancer management has historically lacked subtype specificity.
  • Tumor heterogeneity is recognized, with distinct molecular profiles and behaviors.
  • Low-grade serous carcinoma (LGSC) is rare, indolent, and chemoresistant.

Purpose of the Study:

  • To investigate novel therapeutic targets in LGSC.
  • To evaluate the efficacy of MEK1/2 inhibition in LGSC.

Main Methods:

  • Targeting the mitogen-activated protein kinase (MAPK) pathway.
  • Utilizing selumetinib, a MEK1/2 inhibitor.

Main Results:

  • Selumetinib demonstrates promising efficacy in relapsed LGSC.
  • MEK-inhibition is a viable therapeutic strategy for LGSC.

Conclusions:

  • Targeting the MAPK pathway offers a novel approach for LGSC treatment.
  • Further clinical trials and biomarker research are warranted for MEK-inhibitor therapy.

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
9.1K
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...
5.0K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

1.6K
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...
8.3K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
6.1K
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
9.0K