Aprendamos Ciencia

En Brasil, la Dra. Mariangela Hungria fue reconocida con el Premio Mundial de Alimentos por transformar la microbiología del suelo.

Desarrolló inoculantes con bacterias fijadoras de nitrógeno que reemplazan parte de los fertilizantes sintéticos.

Bacterias, como Bradyrhizobium, viven en las raíces de cultivos y convierten el nitrógeno del aire en nutrientes.

Así, el cultivo se alimenta de forma natural, reduciendo costos, uso de químicos y emisiones contaminantes.

BREAKING NEWS
The Nobel Assembly at Karolinska Institutet has decided to award the 2025 Nobel Prize in Physiology or Medicine to Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi “for their discoveries concerning peripheral immune tolerance.”

This year’s medicine laureates have discovered how the immune system is kept in check. The body’s powerful immune system must be regulated, or it may attack our own organs. Brunkow, Ramsdell and Sakaguchi have been awarded this year’s medicine prize for their groundbreaking discoveries concerning peripheral immune tolerance that prevents the immune system from harming the body.

The laureates identified the immune system’s security guards, regulatory T cells, which prevent immune cells from attacking our own body.

The laureates’ discoveries launched the field of peripheral tolerance, spurring the development of medical treatments for cancer and autoimmune diseases. This may also lead to more successful transplantations. Several of these treatments are now undergoing clinical trials.

Learn more
Press release: https://bit.ly/46NpqbG
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A new Science Immunology study describes an HIV Apex immunogen that can trigger the development of broadly neutralizing antibody precursors in rhesus macaques that resemble those seen in humans, which could inform future vaccines for humans. https://scim.ag/4lwSLMF

"Here I must make a confession. I was led to this decision because I do not like either mathematics or statistics. I began my career as a protozoologist. I like to see things, not calculate probabilities."

In the early 1950s André Lwoff studied bacteriophages, which are viruses that infect bacteria, using them to replicate. Scientists observed that at times, many new phage are created quickly, while at other times, new phage are formed only several bacterial generations later. Lwoff successfully explained how this process, known as lysogeny, works. The bacteriophage's genes are incorporated into the bacteria's genetic material, but remain latent until a trigger factor causes new phage to be formed. Lwoff also showed that ultraviolet light can be one such factor.

Read his Nobel Prize lecture: https://bit.ly/3yeKUP4

Image: Transmission electron micrograph of multiple bacteriophages attached to a bacterial cell wall; the magnification is approximately 200,000.

El cielo nos regala un espectáculo único 🔴. La noche del 13 al 14 de marzo, la Luna se teñirá de rojo durante un eclipse total. No necesitas equipo especial para observarlo. Divulgación de la Ciencia, UNAM te explica. 👇

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¿Que árboles o plantas debo plantar en Juarez?
Descarga la paleta vegetal 👇🏼🌿🌳🌲🌱

https://www.imip.org.mx/imip/files/publicaciones/PaletaVegetal.pdf

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Science Immunology's February issue is out!

The cover depicts hotspots of tumor-immune cell interactions within breakout lesions in patients with multiple myeloma, which could contribute to disease progression. Learn more in this month's issue: https://scim.ag/3WP7pFy

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The Nobel Prize in Chemistry 2024.

The Royal Swedish Academy of Sciences has decided to award the 2024 Nobel Prize in Chemistry with one half to David Baker “for computational protein design” and the other half jointly to Demis Hassabis and John M. Jumper “for protein structure prediction.”

The Nobel Prize in Chemistry 2024 is about proteins, life’s ingenious chemical tools. David Baker has succeeded with the almost impossible feat of building entirely new kinds of proteins. Demis Hassabis and John Jumper have developed an AI model to solve a 50-year-old problem: predicting proteins’ complex structures. These discoveries hold enormous potential.

The diversity of life testifies to proteins’ amazing capacity as chemical tools. They control and drive all the chemical reactions that together are the basis of life. Proteins also function as hormones, signal substances, antibodies and the building blocks of different tissues.

Life could not exist without proteins. That we can now predict protein structures and design our own proteins confers the greatest benefit to humankind.

Image Credit: Nobel Prize