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Journal ArticleDOI

HSP90 at the hub of protein homeostasis: emerging mechanistic insights

TLDR
Comprehensive understanding of how HSP90 functions promises not only to provide new avenues for therapeutic intervention, but to shed light on fundamental biological questions.
Abstract
Heat shock protein 90 (HSP90) is a highly conserved molecular chaperone that facilitates the maturation of a wide range of proteins (known as clients). Clients are enriched in signal transducers, including kinases and transcription factors. Therefore, HSP90 regulates diverse cellular functions and exerts marked effects on normal biology, disease and evolutionary processes. Recent structural and functional analyses have provided new insights on the transcriptional and biochemical regulation of HSP90 and the structural dynamics it uses to act on a diverse client repertoire. Comprehensive understanding of how HSP90 functions promises not only to provide new avenues for therapeutic intervention, but to shed light on fundamental biological questions.

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Journal ArticleDOI

Aspergillus fumigatus Hsp90 interacts with the main components of the cell wall integrity pathway and cooperates in heat shock and cell wall stress adaptation.

TL;DR: The data suggest that the CWIP is constitutively required for A. fumigatus to cope with the temperature increase found in the mammalian lung environment, emphasising the importance of this pathway in supporting thermotolerance and cell wall integrity.
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Heat Shock Protein-90 Inhibition Alters Activation of Pancreatic Stellate Cells and Enhances the Efficacy of PD-1 Blockade in Pancreatic Cancer

TL;DR: It is demonstrated that Hsp90 inhibition directly affects PSC/CAF in vitro and enhances the efficacy of anti–PD-1 blockade in vivo and combined therapy with XL888 and anti- PD-1 was efficacious in C57BL/6 mice bearing syngeneic subcutaneous (Panc02) or orthotopic (KPC-Luc) tumors.
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Gene profiling analysis of the early effects of ablative fractional carbon dioxide laser treatment on human skin.

TL;DR: Gene expression profiling showed that the most significantly upregulated genes in these skin samples were those encoding Wnt5a, cysteine‐rich angiogenic inducer 61 (CYR61), and heat shock protein (HSP) 90, suggesting that the induction of proteins may be the preceding event that is associated with the clinical effects of laser treatment.
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Unique proline-rich domain regulates the chaperone function of AIPL1.

TL;DR: The proline-rich domain decreased the affinity of AIPL1 for Hsp90, implying that this domain acts as a negative regulator of the HSp90 interaction besides being necessary for efficient binding of A IPL1 to non-native proteins.
Journal ArticleDOI

Identifying cross-category relations in gene ontology and constructing genome-specific term association networks

TL;DR: A new cross-category similarity measurement called CroGO is introduced by incorporating genome-specific gene co-function network data and it is shown that the measurement outperforms the existing algorithms.
References
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Journal ArticleDOI

Mechanism of Activation of the Raf-Erk Signaling Pathway by Oncogenic Mutations of B-Raf

TL;DR: The high activity mutants signal to ERK by directly phosphorylating MEK, whereas the impaired activity mutants stimulate MEK by activating endogenous C-RAF, possibly via an allosteric or transphosphorylation mechanism.
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HSP90 and the chaperoning of cancer.

TL;DR: Pharmacologically 'bribing' the essential guard duty of the chaperone HSP90 (heat-shock protein of 90 kDa) seems to offer a unique anticancer strategy of considerable promise.
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Hsp90 as a capacitor for morphological evolution

TL;DR: It is reported that when Drosophila Hsp90 is mutant or pharmacologically impaired, phenotypic variation affecting nearly any adult structure is produced, with specific variants depending on the genetic background and occurring both in laboratory strains and in wild populations.
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Adapting proteostasis for disease intervention.

TL;DR: The proteostasis network is described, a set of interacting activities that maintain the health of proteome and the organism that has the potential to ameliorate some of the most challenging diseases of this era.
Journal ArticleDOI

Function and regulation of cullin-RING ubiquitin ligases.

TL;DR: This review focuses on the composition, regulation and function of cullin–RING ligases, and describes how these enzymes can be characterized by a set of general principles.
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