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2. APOBEC2 safeguards skeletal muscle cell fate through binding chromatin and regulating transcription of non-muscle genes during myoblast differentiation

Author

Lorenzo, J. Paulo, primary, Molla, Linda, additional, Amro, Elias Moris, additional, Ibarra, Ignacio L., additional, Ruf, Sandra, additional, Neber, Cedrik, additional, Gkougkousis, Christos, additional, Ridani, Jana, additional, Subramani, Poorani Ganesh, additional, Boulais, Jonathan, additional, Harjanto, Dewi, additional, Vonica, Alin, additional, Di Noia, Javier M., additional, Dieterich, Christoph, additional, Zaugg, Judith B., additional, and Papavasiliou, F. Nina, additional

Published
2024
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3. Cohesin-mediated NF-κB signaling limits hematopoietic stem cell self-renewal in aging and inflammation

Author

Chen, Zhiyang, primary, Amro, Elias Moris, additional, Becker, Friedrich, additional, Hölzer, Martin, additional, Rasa, Seyed Mohammad Mahdi, additional, Njeru, Sospeter Ngoci, additional, Han, Bing, additional, Di Sanzo, Simone, additional, Chen, Yulin, additional, Tang, Duozhuang, additional, Tao, Si, additional, Haenold, Ronny, additional, Groth, Marco, additional, Romanov, Vasily S., additional, Kirkpatrick, Joanna M., additional, Kraus, Johann M., additional, Kestler, Hans A., additional, Marz, Manja, additional, Ori, Alessandro, additional, Neri, Francesco, additional, Morita, Yohei, additional, and Rudolph, K. Lenhard, additional

Published
2018
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4. Cohesin-mediated NF-κB signaling limits hematopoietic stem cell self-renewal in aging and inflammation

Author

Chen, Zhiyang, Amro, Elias Moris, Becker, Friedrich, Hölzer, Martin, Rasa, Seyed Mohammad Mahdi, Njeru, Sospeter Ngoci, Han, Bing, Di Sanzo, Simone, Chen, Yulin, Tang, Duozhuang, Tao, Si, Haenold, Ronny, Groth, Marco, Romanov, Vasily S., Kirkpatrick, Joanna M., Kraus, Johann M., Kestler, Hans A., Marz, Manja, Ori, Alessandro, Neri, Francesco, Morita, Yohei, and Rudolph, K. Lenhard

Abstract

Organism aging is characterized by increased inflammation and decreased stem cell function, yet the relationship between these factors remains incompletely understood. This study shows that aged hematopoietic stem and progenitor cells (HSPCs) exhibit increased ground-stage NF-κB activity, which enhances their responsiveness to undergo differentiation and loss of self-renewal in response to inflammation. The study identifies Rad21/cohesin as a critical mediator of NF-κB signaling, which increases chromatin accessibility in the vicinity of NF-κB target genes in response to inflammation. Rad21 is required for normal differentiation, but limits self-renewal of hematopoietic stem cells (HSCs) during aging and inflammation in an NF-κB–dependent manner. HSCs from aged mice fail to down-regulate Rad21/cohesin and inflammation/differentiation signals in the resolution phase of inflammation. Inhibition of cohesin/NF-κB reverts hypersensitivity of aged HSPCs to inflammation-induced differentiation and myeloid-biased HSCs with disrupted/reduced expression of Rad21/cohesin are increasingly selected during aging. Together, Rad21/cohesin-mediated NF-κB signaling limits HSPC function during aging and selects for cohesin-deficient HSCs with myeloid-skewed differentiation.

Published
2019
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