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X-ORIGINAL-URL:https://www.biomed.cas.cz
X-WR-CALDESC:Akce na 
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BEGIN:VTIMEZONE
TZID:Europe/Prague
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TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
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TZOFFSETTO:+0100
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DTSTART:20251026T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Prague:20250108T150000
DTEND;TZID=Europe/Prague:20250108T160000
DTSTAMP:20260419T050540
CREATED:20241128T122535Z
LAST-MODIFIED:20241128T122535Z
UID:2267-1736348400-1736352000@www.biomed.cas.cz
SUMMARY:Seminář Dr. Nicolas Rivron
DESCRIPTION:Modeling human early pregnancy with stem cells” \nThe blastocyst is the early mammalian organism before implantation in the uterus. We have promoted the self-organization of stem cells into models of mouse and human blastocysts\, which we have named blastoids (Nature 2018\, Nature 2021). Blastoids are morphologically and transcriptionally similar to the blastocyst and contain analogs of all three cell types that would eventually develop into the complete organism (embryonic and extraembryonic). Because blastoids are complete and model the preimplantation stage\, they can be introduced into the uterus (mouse model) or combined in vitro with uterine cells (human model) to recapitulate aspects of the normally hidden implantation processes. Unlike blastocysts\, blastoids come in large numbers and facilitate a more systematic modulation and analysis of development. As such\, they represent both a scientific and ethical alternative to the use of embryos for research. Using this approach\, we are investigating the genome evolution underlying species-specific aspects of blastocyst development and implantation\, with the long-term goal of understanding the evolutionary basis of human pregnancy characteristics (50% of fertilized eggs never develop). This knowledge could help solve the global health problems of family planning\, fertility decline and prenatal preventive medicine.
URL:https://www.biomed.cas.cz/event/seminar-dr-nicolas-rivron/
LOCATION:Posluchárna Milana Haška / Milan Hašek Auditorium
ORGANIZER;CN="%C3%9AMG":MAILTO:leona.krausova@img.cas.cz
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Prague:20250115T150000
DTEND;TZID=Europe/Prague:20250115T160000
DTSTAMP:20260419T050540
CREATED:20250106T090313Z
LAST-MODIFIED:20250106T090313Z
UID:2276-1736953200-1736956800@www.biomed.cas.cz
SUMMARY:Seminář Karolína Vaníčková\, M.Sc.
DESCRIPTION:“Infections and hematopoietic stem cells: how do they communicate?” \nInfections are primarily cleared by immune cells in our bodies. However\, we observed that the most immature hematopoietic stem cells also contribute to this process. In this lecture\, we will report on the mechanisms that activate an hematopoietic stem cell during infection and the cellular adaptations that these cells undertake. Special attention will be given to the contribution of the Wnt/beta-catenin signaling pathway.
URL:https://www.biomed.cas.cz/event/seminar-karolina-vanickova-m-sc/
LOCATION:Posluchárna Milana Haška / Milan Hašek Auditorium
ORGANIZER;CN="%C3%9AMG":MAILTO:leona.krausova@img.cas.cz
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Prague:20250120T150000
DTEND;TZID=Europe/Prague:20250120T160000
DTSTAMP:20260419T050540
CREATED:20250113T092008Z
LAST-MODIFIED:20250113T092128Z
UID:2279-1737385200-1737388800@www.biomed.cas.cz
SUMMARY:Lecture “Iron and bone: a (not so) unusual liaison? Unraveling the role of cell metabolism in osteoblasts during iron overload”
DESCRIPTION:Speaker: Martina Rauner\, Technische Universität Dresden\, Germany
URL:https://www.biomed.cas.cz/event/lecture-iron-and-bone-a-not-so-unusual-liaison-unraveling-the-role-of-cell-metabolism-in-osteoblasts-during-iron-overload/
LOCATION:Kinosal\, Vídeňská 1083\, Praha
ORGANIZER;CN="FGU":MAILTO:Olga.Zimmermannova@fgu.cas.cz
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Prague:20250122T150000
DTEND;TZID=Europe/Prague:20250122T160000
DTSTAMP:20260419T050540
CREATED:20250113T124228Z
LAST-MODIFIED:20250113T124228Z
UID:2282-1737558000-1737561600@www.biomed.cas.cz
SUMMARY:Seminář Michal Mrkáček\, M.Sc.
DESCRIPTION:“Tipping the Lipid Scales: Negative Feedback Regulation via ORMDLs Protein Degradation Ensures Sphingolipid Homeostasis” \nSphingolipids are essential lipid molecules that contribute to cellular structure and signaling. Their de novo synthesis is initiated in the endoplasmic reticulum (ER) and catalyzed by the multimeric serine palmitoyltransferase (SPT) complex. The ER-resident ORMDL proteins are well-established regulators of sphingolipid synthesis\, directly inhibiting the SPT complex to control the pathway at its origin. Here\, we identify a negative feedback loop that fine-tunes this regulatory mechanism. Using pharmacological inhibitors such as myriocin and fumonisin B1\, which target different steps of the sphingolipid pathway\, we demonstrate that reduced sphingolipid levels promote enhanced degradation of ORMDL proteins. This degradation alleviates SPT inhibition\, thereby accelerating de novo sphingolipid biosynthesis and restoring metabolic balance.
URL:https://www.biomed.cas.cz/event/seminar-michal-mrkacek-m-sc/
LOCATION:Posluchárna Milana Haška / Milan Hašek Auditorium
ORGANIZER;CN="%C3%9AMG":MAILTO:leona.krausova@img.cas.cz
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Prague:20250129T150000
DTEND;TZID=Europe/Prague:20250129T160000
DTSTAMP:20260419T050540
CREATED:20250114T125756Z
LAST-MODIFIED:20250114T125756Z
UID:2284-1738162800-1738166400@www.biomed.cas.cz
SUMMARY:Seminář Mgr. et Mgr. Evžen Bouřa\, Ph.D.
DESCRIPTION:“RNA cap methylation in poxviruses and coronavirus – differences and similarities” \nRNA methyltransferases (MTases) are responsible for synthesizing the 5′ RNA cap\, which plays a crucial role in RNA stability and efficient translation. Over the past two years\, both our research team and others have developed numerous inhibitors targeting coronaviral MTases. Through our efforts\, we have successfully determined the crystal structures of these inhibitors bound to the coronaviral nsp14 and nsp16/nsp10 MTases. Additionally\, we recently elucidated the crystal structure of the monkeypox virus MTase VP39\, in complex with the broad-spectrum MTase inhibitor sinefungin and several other inhibitors. These structural studies have unveiled notable distinctions between coronaviral and poxviral MTases\, while also highlighting the potential for targeting these enzymes with the same or closely related compounds.
URL:https://www.biomed.cas.cz/event/seminar-mgr-et-mgr-evzen-boura-ph-d/
LOCATION:Posluchárna Milana Haška / Milan Hašek Auditorium
ORGANIZER;CN="%C3%9AMG":MAILTO:leona.krausova@img.cas.cz
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