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Fig. 1 | Cancer Cell International

Fig. 1

From: Roles of sphingosine-1-phosphate signaling in cancer

Fig. 1

Biosynthesis of S1P. S1P is generated from sphingosine (SPH) by two sphingosine kinases (SphK1 and SphK2) in the catabolic pathway. SphK1 mainly exists in the cytosol, but SphK2 exists in the nuclei and mitochondria. S1P produced by SphK1 is exported to the extracellular space, where it exerts various functions associated with cancer via S1P receptor (S1PR). S1P produced by SphK2 is thought to play important roles in intracellular functions

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