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Transcriptional analysis of insect extreme freeze tolerance
LE. Des Marteaux, P. Hůla, V. Koštál,
Jazyk angličtina Země Velká Británie
Typ dokumentu časopisecké články, práce podpořená grantem
NLK
Free Medical Journals
od 1997 do Před 1 rokem
Freely Accessible Science Journals
od 2004 do Před 1 rokem
PubMed Central
od 1997 do Před 1 rokem
Europe PubMed Central
od 1997 do Před 1 rokem
Open Access Digital Library
od 1905-04-22
Open Access Digital Library
od 1997-01-01
PubMed
31640516
DOI
10.1098/rspb.2019.2019
Knihovny.cz E-zdroje
- MeSH
- aklimatizace genetika MeSH
- Drosophilidae genetika MeSH
- hmyz genetika MeSH
- transkriptom MeSH
- zmrazování * MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Few invertebrates can survive cryopreservation in liquid nitrogen, and the mechanisms by which some species do survive are underexplored, despite high application potential. Here, we turn to the drosophilid Chymomyza costata to strengthen our fundamental understanding of extreme freeze tolerance and gain insights about potential avenues for cryopreservation of biological materials. We first use RNAseq to generate transcriptomes of three C. costata larval phenotypic variants: those warm-acclimated in early or late diapause (weak capacity to survive cryopreservation), and those undergoing cold acclimation after diapause entry (extremely freeze tolerant, surviving cryopreservation). We identify mRNA transcripts representing genes and processes that accompany the physiological transition to extreme freeze tolerance and relate cryopreservation survival to the transcriptional profiles of select candidate genes using extended sampling of phenotypic variants. Enhanced capacity for protein folding, refolding and processing appears to be a central theme of extreme freeze tolerance and may allow cold-acclimated larvae to repair or eliminate proteins damaged by freezing (thus mitigating the toxicity of denatured proteins, endoplasmic reticulum stress and subsequent apoptosis). We also find a number of candidate genes (including both known and potentially novel, unannotated sequences) whose expression profiles tightly mirror the change in extreme freeze tolerance status among phenotypic variants.
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