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Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?
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[Her2 a paradigm for targeted therapy]

Hélène Marijon1, Fabrice André

  • 1Hôpital Saint-Antoine, service d'oncologie médicale, Paris Cedex, France. helene.marijon@sat.aphp.fr

Bulletin Du Cancer
|June 21, 2011
PubMed

Insights

Her2-positive breast cancers are treated with trastuzumab, but resistance occurs. This review explores Her2 and trastuzumab mechanisms to overcome treatment resistance in breast cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Human Epidermal growth factor Receptor 2 (Her2) is overexpressed in 15% of breast cancers, impacting prognosis.
  • Targeted therapies like trastuzumab have improved outcomes for Her2-positive breast cancer patients.
  • Treatment resistance remains a significant clinical challenge, necessitating further research into Her2 pathways.

Purpose of the Study:

  • To review the mechanisms of action for Her2 and trastuzumab.
  • To elucidate pathways activated in tumors resistant to trastuzumab.
  • To identify strategies for overcoming treatment resistance in Her2-positive breast cancer.

Main Methods:

  • Literature review and synthesis of existing research on Her2 signaling.
  • Analysis of molecular mechanisms underlying trastuzumab efficacy and resistance.
  • Identification of potential therapeutic targets and strategies based on pathway analysis.

Main Results:

  • Her2 signaling pathways are complex and can be activated through various mechanisms.
  • Resistance to trastuzumab can arise from alterations in Her2 downstream signaling, bypass pathways, or tumor microenvironment factors.
  • Understanding these resistance mechanisms is crucial for developing effective combination therapies.

Conclusions:

  • Trastuzumab is a vital therapy for Her2-positive breast cancer, but resistance limits its long-term efficacy.
  • Further investigation into resistance pathways is essential for improving patient outcomes.
  • Developing novel therapeutic strategies targeting resistance mechanisms holds promise for enhancing treatment effectiveness.

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