ArticleCell stress & chaperones2017
Components of a mammalian protein disaggregation/refolding machine are targeted to nuclear speckles following thermal stress in differentiated human neuronal cells.
Article in Cell stress & chaperones, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 25 citations in OpenAlex.
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- Characterization of DnaJ gene family in Castanea mollissima and functional analysis of CmDnaJ27 under cold and heat stresses.BMC plant biology · 2025Article
- Misfolding and aggregation in neurodegenerative diseases: protein quality control machinery as potential therapeutic clearance pathways.Cell communication and signaling : CCS · 2024Review
- The alteration of N6-methyladenosine (m6A) modification at the transcriptome-wide level in response of heat stress in bovine mammary epithelial cells.BMC genomics · 2022Article
- Disease-associated mutations within the yeast DNAJB6 homolog Sis1 slow conformer-specific substrate processing and can be corrected by the modulation of nucleotide exchange factors.Nature communications · 2022Article
- A second chance for protein targeting/folding: Ubiquitination and deubiquitination of nascent proteins.BioEssays : news and reviews in molecular, cellular and developmental biology · 2022Review
- Hsp40s play distinct roles during the initial stages of apolipoprotein B biogenesis.Molecular biology of the cell · 2022Article
- Establishment of Human-Induced Pluripotent Stem Cell-Derived Neurons-A Promising In Vitro Model for a Molecular Study of Rabies Virus and Host Interaction.International journal of molecular sciences · 2021Article
- Aggregation and disaggregation features of the human proteome.Molecular systems biology · 2020Article
- Reduced phosphorus intake throughout gestation and lactation of sows is mitigated by transcriptional adaptations in kidney and intestine.BMC genomics · 2020Article
- Alfalfa-derived HSP70 administered intranasally improves insulin sensitivity in mice.Cell stress & chaperones · 2018Article
- Knockdown of Heat Shock Proteins HSPA6 (Hsp70B') and HSPA1A (Hsp70-1) Sensitizes Differentiated Human Neuronal Cells to Cellular Stress.Neurochemical research · 2018Article
- Differential Targeting of Hsp70 Heat Shock Proteins HSPA6 and HSPA1A with Components of a Protein Disaggregation/Refolding Machine in Differentiated Human Neuronal Cells following Thermal Stress.Frontiers in neuroscience · 2017Article
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2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Heat shock proteins (Hsps) are a set of highly conserved proteins involved in cellular repair and protective mechanisms. They counter protein misfolding and aggregation that are characteristic features of neurodegenerative diseases. Hsps act co-operatively in disaggregation/refolding machines that assemble at sites of protein misfolding and aggregation. Members of the DNAJ (Hsp40) family act as "holdases" that detect and bind misfolded proteins, while members of the HSPA (Hsp70) family act as "foldases" that refold proteins to biologically active states. HSPH1 (Hsp105α) is an important additional member of the mammalian disaggregation/refolding machine that acts as a disaggregase to promote the dissociation of aggregated proteins. Components of a disaggregation/refolding machine were targeted to nuclear speckles after thermal stress in differentiated human neuronal SH-SY5Y cells, namely: HSPA1A (Hsp70-1), DNAJB1 (Hsp40-1), DNAJA1 (Hsp40-4), and HSPH1 (Hsp105α). Nuclear speckles are rich in RNA splicing factors, and heat shock disrupts RNA splicing which recovers after stressful stimuli. Interestingly, constitutively expressed HSPA8 (Hsc70) was also targeted to nuclear speckles after heat shock with elements of a disaggregation/refolding machine. Hence, neurons have the potential to rapidly assemble a disaggregation/refolding machine after cellular stress using constitutively expressed Hsc70 without the time lag needed for synthesis of stress-inducible Hsp70. Constitutive Hsc70 is abundant in neurons in the mammalian brain and has been proposed to play a role in pre-protecting neurons from cellular stress.
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