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Warum schwächelt das Immunsystem der Astronauten?

By Guest PostApril 19, 2014Scienceadriana mancuso, chanares formation, cost benefit modell, cytokine, dinosaur relatives, early dinosauromorphs, esa astronaut, farid chemale, first dinosaurs, gruenalge, iss, juan martin leardi, klaus herburger, klebsormidium crenulatum, martina pichrtova, NASA, otmar weiss, randall irmis, usa, usi wien, volcanic ash layer

DLR schickt zwei biologische Experimente der Universität Magdeburg zur ISS – Ebenfalls an Bord: NASA-Kameras für DLR-Schüler-Experiment “Columbus Eye”

Im All ist alles anders: Jede noch so kleine Zelle unseres Körpers merkt, dass die Schwerkraft fehlt, unsere Körperfunktionen sind verändert. So schwächt ein Aufenthalt im All auch das Immunsystem der Astronauten. Warum das so ist, wollen Forscher der Universität Magdeburg in zwei vom Raumfahrtmanagement des DLR organisierten Experimenten auf der Internationalen Raumstation ISS herausfinden. An Bord eines Dragon-Raumschiffs der US-amerikanischen Firma SpaceX sind am 18. April 2014 um 21.25 Uhr MESZ (15.25 Uhr Ortszeit) zwei Zellkulturen vom Weltraumbahnhof in Cape Canaveral (Florida) zur ISS gestartet. (more…)

With Drug-Loaded Nanogel, Yale Researchers Attack Cancerous Tumors

By Guest PostJuly 22, 2012Health, Sciencebiodegradable nanoparticle, cancer therapy, cancerous tumor, cytokine, eric stern, immune system, immunotherapeutic method, jason park, metastatic melanomas, michael look, nanogel, natural defense, richard a flavell, skin cancer, soluble protein, stephen h wrzesinski, tarek m fahmy, therapeutic agent, tumor vasculature, yale university

Yale University scientists have developed a new mechanism for attacking cancerous tumors that intensifies the body’s immune response while simultaneously weakening the tumor’s ability to resist it.

“We believe this is a paradigm-changing immunotherapeutic method for cancer therapy,” said Tarek M. Fahmy, a bioengineer at Yale and the project’s principal investigator. “In essence, it’s a one-two punch strategy that seems to work well for melanoma and may work even better with other cancers.” (more…)

UCLA Scientists ID Cell, Signaling Pathway That Regulate Blood Stem Cells in Placenta

By Guest PostMarch 2, 2012Scienceakanksha chhabra, blood cells, blood stem cells, bone marrow, cell, cytokine, epo, erythropoietin, hanna mikkola, kim irwin, mother and fetus, mouse models, pdgf b, placenta, post natal life, protein molecule, red blood cell, safe zone, stem cell, trophoblasts, ucla, undifferentiated state

UCLA stem-cell researchers have identified a certain type of cell and a signaling pathway in the placental niche that play a key role in stopping blood stem cells from differentiating into mature blood cells in the placenta. Preventing this premature differentiation is critical to ensuring a proper blood supply for an individual’s lifetime.

The placental niche is considered a stem cell “safe zone,” which supports the creation and expansion of blood stem cells without promoting their differentiation into mature cells. This allows for the establishment of a pool of precursor cells that will later provide blood cells for fetal and post-natal life, said the study’s senior author, Dr. Hanna Mikkola, an associate professor of molecular cell and developmental biology at UCLA and a researcher at UCLA’s Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research. (more…)

Tag Archives: cytokine

Warum schwächelt das Immunsystem der Astronauten?

With Drug-Loaded Nanogel, Yale Researchers Attack Cancerous Tumors

UCLA Scientists ID Cell, Signaling Pathway That Regulate Blood Stem Cells in Placenta