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Comparative proteomics profiling of CHO and fast-growing CHL-YN cells

ABSTRACT: Comprehensive identification of activated biological processes and pathways in Chinese hamster ovary (CHO) cells and Chinese hamster lung (CHL)-YN cells by proteome profiling, with a focus on their functional characteristics as host cells for biopharmaceutical production. In CHL-YN cells, processes related to energy and biomass production were more prominently activated, whereas in CHO cells, processes associated with membrane transport were preferentially activated.

INSTRUMENT(S):

ORGANISM(S): Cricetulus Griseus (chinese Hamster) (cricetulus Barabensis Griseus)

TISSUE(S): Lung Cell Line, Lung, Permanent Cell Line Cell, Ovary Cell Line

SUBMITTER: Yu Tsunoda

LAB HEAD: Noriko Yamano-Adachi

PROVIDER: PXD066507 | Pride | 2025-10-03

REPOSITORIES: Pride

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			Action	DRS
	240212_BetenbaughM_YT_TMT10_Cateories_C_griseus.mzTab	Mztab
	TB-CS-LI__240212_BetenbaughM_YT_TMT10_1.raw	Raw
	TB-CS-LI__240212_BetenbaughM_YT_TMT10_10.raw	Raw
	TB-CS-LI__240212_BetenbaughM_YT_TMT10_11.raw	Raw
	TB-CS-LI__240212_BetenbaughM_YT_TMT10_12.raw	Raw

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Project description:Î³-secretase is an intra-membrane-cleaving aspartyl protease implicated in the processing of a wide range of type I membrane proteins including the Notch receptor and the amyloid-Î² precursor protein (APP). It thus regulates a diverse array of cellular and biological processes including the differentiation of neuronal embryonic stem cells, or intestinal stem cells, with the latter controlling the self-renewing of the intestinal epithelium. Indeed, proteolysis of these proteins by Î³-secretase triggers signaling cascades by releasing intracellular domains (ICDs) which, following association with adaptor proteins and nuclear translocation, modulate the transcription of different genes by binding directly to their promoters. The pronounced proliferative and regenerative effects of Notch signaling and its implication in the generation of the AÎ²-peptides, makes Î³-secretase a therapeutic target for several types of cancer and for Alzheimerâs disease. To investigate the broad effects of Î³-secretase activity onto the cellular transcriptome, Chinese hamster ovary (CHO) cells with enhanced Î³-secretase were compared to cells with abolished Î³-secretase activity via a microarray designed for a genetically close species, mouse. Our findings will potentially help to decipher the biology of Î³-secretase, including a better understanding of the roles of this enzyme in gene transcription. We compared the transcriptomes of two CHO cell lines displaying extreme differences in Î³-secretase activity. The S-1 cell line overexpressed the four components of Î³-secretase (NCT, APH1aL, PS1, and PEN2) and was characterized by a marked increase in the level of PS1 heterodimers associated with 8-fold increased Î³-secretase activity compared to untransfected controls. The other cell line consisted of wild type CHO cells incubated with DAPT, a well-known Î³-secretase inhibitor. The two cell lines were used in combination with a mouse microarray to analyze gene transcription under enhanced Î³-secretase. Two samples, S1 and DAPT treated CHO- were used in biological triplicates each.

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Comparative proteomics profiling of CHO and fast-growing CHL-YN cells

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