Title : Chinese hamster ovary cells overexpressing the oxysterol binding protein (OSBP) display enhanced synthesis of sphingomyelin in response to 25-hydroxycholesterol.

Pub. Date : 1999 Jan

PMID : 9869656






9 Functional Relationships(s)
Download
Sentence
Compound Name
Protein Name
Organism
1 Chinese hamster ovary cells overexpressing the oxysterol binding protein (OSBP) display enhanced synthesis of sphingomyelin in response to 25-hydroxycholesterol. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
2 Chinese hamster ovary cells overexpressing the oxysterol binding protein (OSBP) display enhanced synthesis of sphingomyelin in response to 25-hydroxycholesterol. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
3 The role of oxysterol binding protein (OSBP), a high affinity receptor for 25-hydroxycholesterol, in activation of SM synthesis was assessed by overexpression in CHO-K1 cells. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
4 The role of oxysterol binding protein (OSBP), a high affinity receptor for 25-hydroxycholesterol, in activation of SM synthesis was assessed by overexpression in CHO-K1 cells. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
5 When compared to mock transfected controls, three CHO-K1 clones overexpressing OSBP by 10- to 15-fold displayed a 2- to 3-fold enhancement of [3H]serine incorporation into sphingomyelin when treated with 25-hydroxycholesterol. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
6 Closer examination of one of these clones (CHO-OSBP cells) revealed a >8.5-fold stimulation of sphingomyelin synthesis after a 6-h treatment with 25-hydroxycholesterol compared to 3.5-fold in controls, slightly higher basal levels of sphingomyelin synthesis, and a more rapid response to 25-hydroxycholesterol. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
7 Closer examination of one of these clones (CHO-OSBP cells) revealed a >8.5-fold stimulation of sphingomyelin synthesis after a 6-h treatment with 25-hydroxycholesterol compared to 3.5-fold in controls, slightly higher basal levels of sphingomyelin synthesis, and a more rapid response to 25-hydroxycholesterol. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
8 Results from overexpressing cells show that OSBP potentiates the stimulatory effects of 25-hydroxycholesterol on sphingomyelin synthesis. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus
9 25-Hydroxycholesterol promotes translocation of OSBP to the Golgi apparatus where it appears to stimulate conversion of ceramide to sphingomyelin. 25-hydroxycholesterol LOW QUALITY PROTEIN: oxysterol-binding protein 1 Cricetulus griseus