Receptor tyrosine kinases in breast cancer treatment: unraveling the potential

Yu Qi1, Shu-Min Deng1, Kuan-Song Wang1,2

  • 1Department of Pathology, School of Basic Medical Sciences, Central South University Changsha, Hunan, China.

PubMed

Insights

Receptor tyrosine kinases (RTKs) drive breast cancer, but molecular heterogeneity limits targeted therapy effectiveness. This review details RTK functions and current drug therapies for breast cancer progression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Breast cancer involves genetic/epigenetic changes affecting cellular signaling.
  • Receptor tyrosine kinases (RTKs) are crucial in breast cancer initiation and progression.
  • RTKs activate key signaling pathways like MAPK, JAK/STAT, and PI3K/AKT.

Purpose of the Study:

  • To review the structural and functional characteristics of selected RTKs.
  • To discuss the mechanisms and current status of drug therapy targeting protein tyrosine kinases in breast cancer.

Main Methods:

  • Literature review of RTKs in breast cancer.
  • Analysis of signaling pathways regulated by RTKs.
  • Summary of targeted therapies and their effectiveness.

Main Results:

  • RTKs play a critical role in breast cancer pathogenesis.
  • Targeted therapies against RTKs are approved but face challenges.
  • Molecular heterogeneity of breast cancer impacts therapeutic response.

Conclusions:

  • Understanding RTK structure-function is key for breast cancer treatment.
  • Current targeted therapies show limited effectiveness due to tumor heterogeneity.
  • Further research into RTK mechanisms and novel therapeutic strategies is warranted.

Related Concept Videos

Receptor Tyrosine Kinases01:26

Receptor Tyrosine Kinases

Receptor tyrosine kinases or RTKs are membrane-bound receptors that phosphorylate specific tyrosine on protein substrates. RTKs regulate cellular growth, differentiation, survival, and migration. They contain an extracellular ligand binding domain, a transmembrane domain, and a cytosolic tail with intrinsic kinase activity. Several extracellular signaling molecules activate RTKs in one or more ways and relay the signal downstream. Ligands such as platelet-derived growth factor (PDGF) or...
12.4K
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...
7.5K
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
2.4K
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...
6.4K
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers01:26

Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers

Receptor tyrosine kinase inhibitors (TKIs) and calcium channel blockers (CCBs) are two critical categories of drugs employed in the treatment of pulmonary artery hypertension (PAH). PAH is a disease that causes high blood pressure in the pulmonary arteries, resulting in chest pain, fatigue, and shortness of breath.
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
143
Enzyme-linked Receptors01:00

Enzyme-linked Receptors

Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
77.5K