HER-2/Neu signaling and therapeutic approaches in breast cancer

Binhua P Zhou1, Yan Li, Mien-Chie Hung

  • 1Department of Molecular and Cellular Oncology, Breast Cancer Basic Research Program, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA.

Breast Disease
|February 3, 2005
PubMed

Insights

Human epidermal growth factor receptor 2-neu (HER-2/neu) overexpression in breast and ovarian cancers is linked to poor outcomes. This review explores new HER-2/neu signaling pathways crucial for cancer cell survival and growth.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Amplification or overexpression of HER-2/neu occurs in 30% of breast and ovarian cancers.
  • HER-2/neu overexpression is associated with poor clinical outcomes, including reduced survival and shorter time to relapse.

Purpose of the Study:

  • To review recent advances in understanding HER-2/neu signaling pathways in breast cancer.
  • To identify new therapeutic targets for HER-2/neu-overexpressing breast and ovarian tumors.

Main Methods:

  • Literature review focusing on HER-2/neu signaling.
  • Analysis of pathways mediating cell survival and growth in breast cancer.

Main Results:

  • Advances in understanding HER-2/neu signaling have improved insights into breast cancer tumorigenesis.
  • Specific pathways mediated by HER-2/neu are critical for cancer cell survival and growth.

Conclusions:

  • Targeting HER-2/neu signaling pathways offers potential therapeutic strategies for HER-2/neu-positive breast and ovarian cancers.
  • Further research into these pathways is essential for developing effective treatments.

Related Concept Videos

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...
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 specific...
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 specific...
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...
Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...