Tag Archives: number

Newest precision medicine tool: Prostate cancer organoids

The researchers, whose results were published today in Cell, successfully grew six prostate cancer organoids from biopsies of patients with metastatic prostate cancer and a seventh organoid from a patient’s circulating tumor cells. Organoids are three-dimensional structures composed of cells that are grouped together and spatially organized like an organ. The histology, or tissue structure, of the prostate cancer organoids is highly similar to the metastasis sample from which they came. Sequencing of the metastasis samples and the matched organoids showed that each organoid is genetically identical to the patient’s cancer from which it originated. …

‘Prepped’ by tumor cells, lymphatic cells encourage breast cancer cells to spread — ScienceDaily

Writing in the Sept. 2 issue of Nature Communications, the researchers describe animal and cell-culture experiments that show increased levels of so-called signaling molecules released by breast cancer cells. These molecules cause lymphatic endothelial cells (LECs) in the lungs and lymph nodes to produce proteins called CCL5 and VEGF. CCL5 attracts tumor cells to the lungs and lymph nodes, and VEGF increases the number of blood vessels and makes them more porous, allowing tumor cells to metastasize and infiltrate the lungs. …

Leukemia drug shows promise for skin, breast and other cancers — ScienceDaily

Dasatinib fights leukemia by checking the uncontrolled growth of cancer cells. But when used against other cancer cells, researchers found, the drug employs a different strategy: It causes the cells to clump together, thus preventing them from migrating. Without the ability to migrate, cancer cells cannot metastasize (spread to other parts of the body)…

Researchers identify a mechanism that stops progression of abnormal cells into cancer

Although the link between abnormal cells and tumor suppressor pathways — like that mediated by the well known p53 gene — has been firmly established, the critical steps in between are not well understood. According to the authors, whose work appears in Cell, this work completes at least one of the missing links. Normal human cells contain 23 pairs of chromosomes, but this number doubles to 46 pairs as a cell prepares to divide…

Prostate cancer screening reduces deaths by a fifth: Large, long-term European trial — ScienceDaily

Despite this new evidence for the effectiveness of prostate-specific antigen (PSA) testing to reduce mortality, doubts as to whether the benefits of screening outweigh the harms remain, and routine PSA screening programmes should not be introduced at this time, conclude the authors. The European Randomised study of Screening for Prostate Cancer (ERSPC) began in 1993 to determine whether screening men for PSA reduces deaths from prostate cancer. …

Prostate cancer screening reduces deaths by a fifth: Large, long-term European trial

Despite this new evidence for the effectiveness of prostate-specific antigen (PSA) testing to reduce mortality, doubts as to whether the benefits of screening outweigh the harms remain, and routine PSA screening programmes should not be introduced at this time, conclude the authors. The European Randomised study of Screening for Prostate Cancer (ERSPC) began in 1993 to determine whether screening men for PSA reduces deaths from prostate cancer. …

HPV testing: Benefit in primary screening

HPV testing is not reimbursed by SHI funds In screening for cervical cancer, the German statutory health insurance (SHI) funds currently offer an annual cytologic examination of mucosal cells from a smear taken from the neck of the womb (cervix). This test is called a Pap smear. Since it became known that infection with HPV is the main risk factor for developing cervical cancer, experts have been discussing whether HPV testing is also a suitable screening method or is even superior to a cytologic test…