Role of heat shock proteins in stress response and carcinogenesis

Cadenas, Cristina; Marchan, Rosemarie; Bolt, Hermann M.

doi:10.1007/s00204-012-0985-1

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…Nevertheless, the data obtained are in line with previous results, so it is likely that sHSPs were not affected. However, an earlier activation time point cannot be discarded since variation between the response activity depends on the small heat shock protein 44 . Furthermore, the lack of induction could suggest that Ag-NPs do not alter the structure of proteins, since the role of sHSPs is to maintain protein homeostasis by binding proteins in non-native conformations, thereby preventing substrate aggregation 75 .…”

Section: Discussionmentioning

confidence: 99%

Effect of silver nanoparticles on gene transcription of land snail Helix aspersa

Turki

Younes

Sakly

et al. 2022

Sci Rep

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Silver nanoparticles (Ag-NPs) are extremely useful in a diverse range of consumer goods. However, their impact on the environment is still under research, especially regarding the mechanisms involved in their effect. Aiming to provide some insight, the present work analyzes the transcriptional activity of six genes (Hsp83, Hsp17.2, Hsp19.8, SOD Cu–Zn, Mn-SOD, and BPI) in the terrestrial snail Helix aspersa in the presence of different concentrations of Ag-NPs. The animals were exposed for seven days to Lactuca sativa soaked for one hour in different concentrations of Ag-NPs (20, 50, 100 mg/L). The results revealed that the highest concentration tested of Ag-NPs (100 mg/L) led to a statistically significant induction of the Hsp83 and BPI expression in the digestive gland compared to the control group. However, a trend to upregulation with no statistical significance was observed for all the genes in the digestive gland and the foot, while in the hemolymph, the trend was to downregulation. Ag-NPs affected the stress response and immunity under the tested conditions, although the impact was weak. It is necessary to explore longer exposure times to confirm that the effect can be maintained and impact on health. Our results highlight the usefulness of the terrestrial snail Helix aspersa as a bioindicator organism for silver nanoparticle pollution biomonitoring and, in particular, the use of molecular biomarkers of pollutant effect as candidates to be included in a multi-biomarker strategy.

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Section: Discussionmentioning

confidence: 99%