Tag: Cells

Plant substance shows inhibitory effects on cancer stem cells

The plant Ambrosia arborescens grows at a high elevation in large parts of South America, and is traditionally used as a medicinal plant. The researchers have isolated the sesquiterpene lactone damsin from the plant and studied its effect on cancer stem cells in three different breast cancer cell lines.
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Love Your Beauty Rest? You Can Thank These Brain Cells

Johns Hopkins researchers report the unexpected presence of a type of neuron in the brains of mice that appears to play a central role in promoting sleep by turning ‘off’ wake-promoting neurons. The newly identified brain cells, located in a part of the hypothalamus called the zona incerta, they say, could offer novel drug targets to treat sleep disorders, such as insomnia and narcolepsy, caused by the dysfunction of sleep-regulating neurons. read more

Prostate Cancer Cells Become ‘Shapeshifters’ to Spread to Distant Organs

Johns Hopkins Kimmel Cancer Center scientists report they have discovered a biochemical process that gives prostate cancer cells the almost unnatural ability to change their shape, squeeze into other organs and take root in other parts of the body. The scientists say their cell culture and mouse studies of the process, which involves a cancer-related protein called AIM1, suggest potential ways to intercept or reverse the ability of cancers to metastasize, or spread. read more

Some Cells Need a ‘Haircut’ Before Duplicating

Many of our cells are equipped with a hairlike “antenna” that relays information about the external environment to the cell, and scientists have already discovered that the appearance and disappearance of these so-called primary cilia are synchronized with the process of cellular duplication, called mitosis. Now, cell biologists at Johns Hopkins report the discovery of new information about how this “hair loss” and cell duplication are linked through the dramatic clipping of the tips of the cilia — what the scientists dub decapitation — that begins their disassembly. read more