Escrita por Attabey Rodríguez Benitez y editado por Cristina Maria Rios.
¿Te imaginas un futuro en el que los humanos podamos recibir órganos de animales en lugar de esperar por un donante? Esto podría ser posible gracias a una investigación llevada a cabo por una colaboración internacional entre laboratorios de Harvard y China que resultó en una publicación en la revista científica Science.
Editors: Sarah Kearns, Jimmy Brancho, and Whit Froehlich
Can you imagine a future where humans could receive organs from animals instead of having to wait for a donor? Well, this could be possible thanks to evidence from an international collaboration between labs in Harvard and China which resulted in a publication in the prestigious journal Science.
Hace acerca de un mes, le comenté a mis compañeros de laboratorio que el olor a la gasolina era un tanto irresistible y que había robado un marcador de pizarra de nuestro laboratorio para olerlo cuando me sentía frustrada con mi investigación. Esto tuvo dos resultados: ahora mis colaboradores de laboratorio se burlan de mí despiadadamente, y me di cuenta de que no todos se sienten atraídos a estos olores tanto como yo.
El último resultado fue una epifanía: pensaba que para todo el mundo el olor a gasolina era agradable. Entonces, ¿Por qué esto no es cierto? Como una genetista, por supuesto mi primer pensamiento fue que los genes deciden la preferencia.
Author: Shweta Ramdas
Editors: Charles Lu, Whit Froehlich, and Scott Barolo
Last year, when I pooh-poohed my mother’s alternative medicine regimen, she said, “But these actually work well for me, because I believe in them!” My mother had just outsmarted me with science.
The placebo effect is one of the most remarkable yet least understood phenomena in science. It is a favorable response of our body to a medically neutral treatment (sugar pills, anybody?): in other words, a placebo is a fake treatment that produces a very real response. This is attributed to a physical reaction stemming from a psychological response to the administration of therapy. You could say that a patient sometimes gets better anyway—how many times have we waited out the common cold—and you would be right. This natural return to the baseline which can happen is not considered the placebo effect, which is an improvement in response to a treatment.
Editors: Theresa Mau, Alex Taylor, and Kevin Boehnke
What exactly separates us from other animals? For that matter, what makes any species or group of species special? How is life so diverse? How can cephalopods camouflage themselves so well, and how did platypuses become so bizarre?
Part of the answer is in genes. Genes are sections of DNA that perform a specific function, usually after being translated into proteins by special cellular machinery. Every species has genes that code for proteins, but different species have different numbers of genes. Humans have around 20,000, fruit flies have around 18,000, and the tiny water-flea has around 31,000 genes. Different sets of genes produce animals with different structures and functions.
Editors: Alex Taylor, Christina Vallianatos, and Bryan Moyers
In 2001 the Nobel Prize in Physiology or Medicine was awarded to three scientists, Leland Hartwell, Tim Hunt and Paul Nurse, for their discoveries of key regulators of the cell cycle. Normally, before a cell can divide, it must undergo several phases of the cell cycle in a precise order. First, a cell grows in size, then duplicates its DNA, and finally distributes its DNA evenly between two daughter cells. The three researchers played seminal roles in identifying the mechanisms by which cells transition from one cell cycle phase to the next.
These fundamental discoveries are not only crucial to our understanding of biology, but have applications in human disease. Many types of cancer are linked to mutations that cause cells to move quickly through or even skip some parts of the cell cycle, making cell cycle regulation a hot area of biological research. Given the implications this research has for human health, it might surprise you that many cell cycle regulators were not first discovered in humans. Instead, these cell cycle regulators were identified and characterized in model organisms including yeast and sea urchins.
“But what do I have in common with the yeast I use to bake bread?” you might ask. As it turns out, a lot more than you’d think.
Editors: Molly Kozminsky, Christina Vallianatos, Bryan Moyers
If you haven’t been living under a rock for the last five years, you have definitely come across headlines to the tune of “Researchers Find Gene for X”, where X can be anything from happiness, to political affiliation, to your preference for cilantro. There are quite a few people who respond to these studies with “but surely that’s not genetic!” I work on the genetics of psychiatric disorders and have fielded this question from most people with whom I discuss my research: “Isn’t something like depression just caused by things that happen to you or your upbringing? Why do we place the blame on genetics instead?”