The word “niche” implies a specialized environment. But to Fiona Doetsch, the stem cell niche is anything but. For brain stem cells, “the whole organism is the niche,” Doetsch told the audience at the third plenary session of the International Society for Stem Cell Research (ISSCR) annual meeting in Hamburg this week. It’s a surprising idea at first, given the brain’s protection from many circulating substances via a series of barriers, including the blood-brain barrier and the blood-cerebrospinal fluid barrier.

The big advantage of cell culture to model diseases is its throughput. “You can play the disease over and over again in the dish,” Clive Svendsen told the audience at the International Society of Stem Cell Research (ISSCR) Annual Meeting held in Hamburg last week. That high throughput, however, is not particularly useful if the cell lines themselves do not accurately model the disease. Cancer cell lines are used in many cell culture experiments far beyond cancer for their ability to grow. But they are “highly abnormal,” Bill Skarnes told the audience at an innovation showcase, as well as quite unstable. “I don’t think the [HEK-293] cell line is the same in your lab as it is in the lab next door,” Skarnes said.

The word “niche” implies a specialized environment. But to Fiona Doetsch, the stem cell niche is anything but. For brain stem cells, “the whole organism is the niche,” Doetsch told the audience at the third plenary session of the International Society for Stem Cell Research (ISSCR) annual meeting in Hamburg this week. It’s a surprising idea at first, given the brain’s protection from many circulating substances via a series of barriers, including the blood-brain barrier and the blood-cerebrospinal fluid barrier.

Scientists at the University of Copenhagen have demonstrated that the trigeminal nerve, a cranial nerve whose activation underlies migraine pain, has direct access to cerebrospinal fluid (CSF) transported by the glymph system. Furthermore, in the run-up to a migraine, levels of multiple proteins in the CSF changed. One of them was calcitonin gene-related peptide (CGRP), a driver of migraine pain and target of several approved drugs for both treatment and prevention of migraine.

“Do dreams predict the future?” Abidemi Otaiku asked his audience at the 10th Congress of the European Academy of Neurology, currently being held in Helsinki. Most audience members, being hard-boiled scientists, did not believe they did. But Otaiku, whose work won the award for best clinical abstract at the conference, presented data indicating that in some cases, they can.

A recent paper has identified the enhancer ETS2, located in a so-called gene desert, as a contributor to five separate immune disorders. It also showed that one of ETS2’s target genes mediating this inflammation was the eminently druggable MEK, a kinase that is the target of the FDA-approved inhibitors Mekinist (trametinib, GSK plc), Mektovi (binimetinib, Array Biopharma Inc.), Cotellic (cobimetinib, Roche Holding AG) and Koselugo (selumetinib, Astrazeneca plc/Merck & Co. Inc.).

High weight is associated with a greater risk of developing many cancers, and with an increased risk of metastasis. But in some cancers such as renal cell carcinoma, it is also associated with better survival and a better response to immunotherapies in particular.

High weight is associated with a greater risk of developing many cancers, and with an increased risk of metastasis. But in some cancers such as renal cell carcinoma, it is also associated with better survival and a better response to immunotherapies in particular.

High weight is associated with a greater risk of developing many cancers, and with an increased risk of metastasis. But in some cancers such as renal cell carcinoma, it is also associated with better survival and a better response to immunotherapies in particular.

Germline variants that did not affect gene function nevertheless affected multiple aspects of breast cancer risk, via their visibility to the immune system and its reactions. Perhaps most surprisingly, the same genetic constellations that were protective at the very earliest stage of breast cancer, stage 0 or ductal carcinoma in situ, were associated with worse outcomes once a tumor had become invasive.