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The histone chaperone HIR maintains chromatin states to control nitrogen assimilation and fungal virulence
- Jenull, Sabrina (author)
- Mair, Theresia (author)
- Tscherner, Michael (author)
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- Penninger, Philipp (author)
- Zwolanek, Florian (author)
- Martinez de San Vicente, Kontxi (author)
- Riedelberger, Michael (author)
- Bandari, Naga C. (author)
- Shivarathri, Raju (author)
- Petryshyn, Andriy (author)
- Chauhan, Neeraj (author)
- Zacchi, Lucia F. (author)
- Leibundgut Landmann, Salomé (author)
- Kuchler, Karl (author)
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- (creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
- In: Cell Reports. - : Elsevier BV. - 2211-1247. ; 36:3
- Journal article (peer-reviewed)
Abstract
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- Adaptation to changing environments and immune evasion is pivotal for fitness of pathogens. Yet, the underlying mechanisms remain largely unknown. Adaptation is governed by dynamic transcriptional re-programming, which is tightly connected to chromatin architecture. Here, we report a pivotal role for the HIR histone chaperone complex in modulating virulence of the human fungal pathogen Candida albicans. Genetic ablation of HIR function alters chromatin accessibility linked to aberrant transcriptional responses to protein as nitrogen source. This accelerates metabolic adaptation and increases the release of extracellular proteases, which enables scavenging of alternative nitrogen sources. Furthermore, HIR controls fungal virulence, as HIR1 deletion leads to differential recognition by immune cells and hypervirulence in a mouse model of systemic infection. This work provides mechanistic insights into chromatin-coupled regulatory mechanisms that fine-tune pathogen gene expression and virulence. Furthermore, the data point toward the requirement of refined screening approaches to exploit chromatin modifications as antifungal strategies.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
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- art (subject category)
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- Jenull, Sabrina
- Mair, Theresia
- Tscherner, Micha ...
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- Silao, Fitz-Gera ...
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- Martinez de San ...
- Riedelberger, Mi ...
- Bandari, Naga C.
- Shivarathri, Raj ...
- Petryshyn, Andri ...
- Chauhan, Neeraj
- Zacchi, Lucia F.
- Leibundgut Landm ...
- Ljungdahl, Per O ...
- Kuchler, Karl
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Biological Scien ...
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- Cell Reports
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- Stockholm University
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