Metastatic Breast Cancer

To fight lung cancer, researchers think small

In a study published in the Journal of Controlled Release, University of Kentucky Markey Cancer Center researchers used nanoparticles to deliver powerful chemotherapy drugs directly to lungs affected by metastatic disease ...

Sep 26, 2018
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How a sleeping cancer awakens and metastasizes

Scientists at Cold Spring Harbor Laboratory (CSHL) have determined one of the ways in which cancers in remission can spring back into action. This knowledge has inspired a new treatment idea designed to prevent cancer recurrence ...

Sep 27, 2018
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New way to target advanced breast cancers

A cytokine signature found in certain kinds of breast cancer cells can not only serve as a diagnostic tool for HER2-negative cancers but also offer an effective treatment target.

Sep 20, 2018
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A master switch controls aggressive breast cancer

A team at the Salk Institute has identified a master switch that appears to control the dynamic behavior of tumor cells that makes some aggressive cancers so difficult to treat. The gene Sox10 directly controls the growth ...

Aug 31, 2018
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Metastatic breast cancer is a stage of breast cancer where the disease has spread to distant metastases. It is a complication of primary breast cancer, usually occurring several years after resection of the primary breast cancer. Metastatic breast cancer cells frequently differ from the preceding primary breast cancer in properties such as receptor status, have often developed resistance to several lines of previous treatment and acquired special properties that permit them metastasize to distant sites, making them especially dangerous. The prognosis is often poor, distant metastases are the cause of about 90% of deaths due to breast cancer.

Breast cancer primarily metastasizes to the bone, lungs, regional lymph nodes, liver and brain, with the most common site being the bone. Lymph node metastsasis into the sentinel node and few surrounding nodes is regarded as a treatable local event and not metastatic breast cancer, both when occurring at primary presentation or later.

Typical environmental barriers in a metastatic event include physical (a basement membrane), chemical (reactive oxygen species or ROS, hypoxia and low pH) and biological (immune surveillance, inhibitory cytokines and regulatory extra-cellular matrix (ECM) peptides) components. Organ-specific anatomic considerations also influence metastasis; these include blood-flow patterns from the primary tumor and the homing ability of cancer cells to certain tissues. The targeting by cancer cells of specific organs is probably regulated by chemo-attractant factors and adhesion molecules produced by the target organ, along with cell-surface receptors expressed by the tumor cells.

This text uses material from Wikipedia licensed under CC BY-SA

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