By Health Center: Breast%20Cancer
Markers on Human Breast Cancer Cells Linked to Development of an Aggressive Form of the Cancer
Scientists have identified a group of surface markers on cells linked to an aggressive type of breast cancer called estrogen receptor-negative cancer. In this preliminary study, estrogen-negative breast cancer developed when three markers, CD44+, CD49fhi, and CD133hi were present simultaneously on the surface of human cells taken from breast cancer patients and transplanted into a mouse; this is called a xenograft model. The scientists named these human cells with tumor-forming ability in mic...
Pathways that Can Repair Brca1 Breast Cancer Gene Mutation Clarified in Mice
In a new study in mice, scientists have compensated for mutations in the Brca1 gene that can lead to cancer by deleting a second gene, which then lessens the probability of cancer. Mice Brca1-associated mammary tumors have significant similarities to human BRCA1- associated (BReast CAncer 1, early onset) breast cancer in regard to tumor aggressiveness, high incidence, mutations and genetic instability. The study, led by scientists at National Cancer Institute (NCI), part of the National Insti...
Breast Cancer Mortality in Different Races are Not Driven by Estrogen Receptor Status Alone
Black women who are diagnosed with breast cancer have a higher probability of dying from the disease than white women, regardless of their estrogen receptor status, according to research from the National Cancer Institute (NCI), part of the National Institutes of Health. Differences in breast cancer mortality may reflect racial differences in access and response to innovative breast cancer treatments, as well as other biological and non-biological factors, according to the report.
Individual Genetics Linked to Resistance to Chemotherapy in Breast Cancer
Researchers have found links between an individual's genetics and their response to treatment with chemotherapy. The findings, by researchers at the National Cancer Institute (NCI), part of the National Institutes of Health, and colleagues, show how a genetic variant, located in the SOD2 gene, may affect how a person responds to the chemotherapy drug cyclophosphamide. Cyclophosphamide is used in the treatment of breast and other cancers.
Biological Markers May Indicate Poor Breast Cancer Prognosis
A team of researchers has found an association between breast cancer survival and two proteins that, when present in the blood in high levels, are indicators of inflammation. Using data from the Health, Eating, Activity and Lifestyle (HEAL) study sponsored by the National Cancer Institute, part of the National Institutes of Health, the researchers found that breast cancer patients with elevated levels of C-reactive protein (CRP) and serum amyloid A (SAA) were approximately two to three times...
Researchers Identify Genetic Variations That May Increase Risk of Breast Cancer
Researchers have identified new genetic variations in two regions of DNA - located on chromosomes 1 and 14 - that may be associated with the risk of sporadic breast cancer. This study also confirms some of the previously identified associations between specific regions in the genome and breast cancer risk. The findings are reported by the Cancer Genetic Markers of Susceptibility (CGEMS) team, which includes researchers at the National Cancer Institute (NCI), part of the National Institutes of...
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