Publications by authors named "Ximena Hildebrandt"

Objective: Receptor-interacting protein kinase 1 (RIPK1) orchestrates the decision between cell survival and cell death in response to tumor necrosis factor (TNF) and other cytokines. Whereas the scaffolding function of RIPK1 is crucial to prevent TNF-induced apoptosis and necroptosis, its kinase activity is required for necroptosis and partially for apoptosis. Although TNF is a proinflammatory cytokine associated with β-cell loss in diabetes, the mechanism by which TNF induces β-cell demise remains unclear.

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Article Synopsis
  • cIAPs are proteins that play a crucial role in regulating TNF signaling by modifying RIPK1, and mutations in cIAP1/2 lead to severe embryonic development issues in mice due to apoptosis.
  • While a modified version of RIPK1 can rescue embryonic development, its absence in cIAP1/2 mice results in inflammation and early death after weaning.
  • The study reveals that cIAPs also control TNFR1-mediated toxicity independently of RIPK1 and RIPK3, providing new insights into TNF signaling and creating a mouse model to help evaluate treatments involving TNF inhibitors.
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Cell death coordinates repair programs following pathogen attack and tissue injury. However, aberrant cell death can interfere with such programs and cause organ failure. Cellular FLICE-like inhibitory protein (cFLIP) is a crucial regulator of cell death and a substrate of Caspase-8.

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Obesity is a state of low-grade chronic inflammation that causes multiple metabolic diseases. During obesity, signalling via cytokines of the TNF family mediate cell death and inflammation within the adipose tissue, eventually resulting in lipid spill-over, glucotoxicity and insulin resistance. These events ultimately lead to ectopic lipid deposition, glucose intolerance and other metabolic complications with life-threatening consequences.

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The patient's hormonal context plays a crucial role in the outcome of cancer. However, the association between thyroid disease and breast cancer risk remains unclear. We evaluated the effect of thyroid status on breast cancer growth and dissemination in an immunocompetent mouse model.

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