Cancer: The origin of genetic mutations

In the presence of some disruptive elements, cancer cells are unable to replicate its DNA optimally. While known to be linked to the increase in genetic mutations, the exact mechanism at work remained unknown until now. By deciphering how replication stress induces the loss or gain of whole chromosomes in the daughters of cancer cells, researchers provide new knowledge that will ultimately lead to better diagnosis and possibly better treatment of cancer.

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Quality control in immune communication: Chaperones detect immature signaling molecules

The cells of our immune system constantly communicate with one another by exchanging complex protein molecules. A team has now revealed how dedicated cellular control proteins, referred to as chaperones, detect immature immune signaling proteins and prevent them from leaving the cell.

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Cellular senescence is associated with age-related blood clots

Cells that become senescent irrevocably stop dividing under stress, spewing out a mix of inflammatory proteins that lead to chronic inflammation as more and more of the cells accumulate over time. Researchers have identified 44 specific senescence-associated proteins that are involved in blood clotting, marking the first time that cellular senescence has been associated with age-related blood clots.

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Pathway found for treatment-resistant lung cancer

A big way chemotherapy works is by prompting cancer cells to commit suicide, and scientists have found a pathway the most common lung cancer walks to avoid death. Scientists have found a first step appears to be lung cancer cells expressing high levels of the molecule TIMP-1, classically considered a tumor inhibitor but at high levels already associated with a poor prognosis for patients.

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