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Proteomics reveals how the tardigrade damage suppressor protein teaches transfected human cells to survive UV-C stress

ABSTRACT: The genome sequencing of the tardigrade Ramazzottius varieornatus revealed a unique nucleo-some-binding protein, named Damage Suppressor (Dsup), which resulted to be crucial for the extraordinary abilities of tardigrades in surviving extreme stresses, such as UV. Evidence in Dsup transfected human cells suggests that Dsup mediates an overall response of DNA damage signaling, DNA repair and cell cycle regulation resulting in an acquired resistance to stress. Given these promising outcomes, our study attempts to provide a wider comprehension of the molecular mechanisms modulated by Dsup in human cells, and to explore the Dsup-activated molecular pathways under stress. We performed a differential proteomic analysis of Dsup-transfected and control human cells, under basal condition and at 24-hour recovery after exposure to UV-C. We demonstrate by enrichment and network analyses, for the first time, that even in the absence of external stimuli and more significantly after stress, Dsup activates mech-anisms involved with the Unfolded Protein Response, the mRNA processing and stability, cyto-plasmic stress granules, the DNA Damage Response and the telomere maintenance. In conclu-sion, our results shed new light on Dsup-mediated protective mechanisms, and increase our knowledge of the molecular machineries of extraordinary protection against UV-C stress.

INSTRUMENT(S): ultraflex

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Culture, Early Embryonic Cell

SUBMITTER: Enxhi Shaba

LAB HEAD: Prof. Luca

PROVIDER: PXD037439 | Pride | 2023-07-31

REPOSITORIES: Pride

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Proteomics Reveals How the Tardigrade Damage Suppressor Protein Teaches Transfected Human Cells to Survive UV-C Stress.

Shaba Enxhi E Landi Claudia C Marzocchi Carlotta C Vantaggiato Lorenza L Bini Luca L Ricci Claudia C Cantara Silvia S

International journal of molecular sciences 20230714 14

The genome sequencing of the tardigrade <i>Ramazzottius varieornatus</i> revealed a unique nucleosome-binding protein named damage suppressor (Dsup), which was discovered to be crucial for the extraordinary abilities of tardigrades in surviving extreme stresses, such as UV. Evidence in Dsup-transfected human cells suggests that Dsup mediates an overall response in DNA damage signaling, DNA repair, and cell cycle regulation, resulting in an acquired resistance to stress. Given these promising out ...[more]

PMID: 37511223

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			Action	DRS
	FTtTfbSee_UV.xml	Xml
	FTtTfbaee_UV.xml	Xml
	FTtTfbcOe_UV.xml	Xml
	FTtTfbsmS_UV.xml	Xml
	FTtTfeTSm_UV.xml	Xml