Only about 600 people have ever traveled to space. The vast majority of astronauts over the past six decades have been middle-aged men on short-duration missions of fewer than 20 days.
Space Exploration
Jul 4, 2024
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16
The length of telomeres that protect the ends of our chromosomes should be tightly regulated. Those that are too long predispose to cancer, and those that are too short lose their protective ability, resulting in telomere ...
Cell & Microbiology
Jun 5, 2024
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75
A new study led by University of Pittsburgh and UPMC Hillman Cancer Center researchers shows that an enzyme called PARP1 is involved in repair of telomeres, the lengths of DNA that protect the tips of chromosomes, and that ...
Cell & Microbiology
May 7, 2024
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56
Dysregulated R-loops can cause stalled replication forks and telomere instability. However, how R-loops are recognized and regulated, is still not well understood, particularly at telomeres.
Cell & Microbiology
Apr 22, 2024
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19
We depend on our cells being able to divide and multiply, whether it's to replace sunburnt skin or replenish our blood supply and recover from injury. Chromosomes, which carry all of our genetic instructions, must be copied ...
Molecular & Computational biology
Apr 11, 2024
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68
Half a century ago, scientists Jim Watson and Alexey Olovnikov independently realized that there was a problem with how our DNA gets copied. A quirk of linear DNA replication dictated that telomeres that protect the ends ...
Molecular & Computational biology
Feb 28, 2024
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244
The natural ends of chromosomes appear alarmingly like broken DNA, much as a snapped spaghetti strand is difficult to distinguish from its intact counterparts. Yet every cell in our bodies must have a way of differentiating ...
Cell & Microbiology
Feb 15, 2024
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64
A team from Children's Medical Research Institute has discovered a new way to impair cancer cell growth, which could lead to the development of a new class of cancer therapeutics with minimal side-effects on normal cells.
Cell & Microbiology
Dec 8, 2023
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30
A new study finds that greenspace—the vegetation in a neighborhood's yards, parks and public spaces—has a positive impact on a key genetic marker associated with exposure to stress. However, the study also finds that ...
Ecology
Oct 18, 2023
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51
The extraordinary lifespans of bats could be under threat from rising global temperatures, according to new research published in Proceedings of the Royal Society B: Biological Sciences.
Plants & Animals
Oct 17, 2023
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20
