Clinical significance
ATP causes a pro-inflammatory environment, whereas degradation of ATP into adenosine by the CD39/CD73 pathway leads to an anti-inflammatory environment. [12] CD39 converts ATP (or ADP) to adenosine monophosphate (AMP), which is converted into adenosine by CD73. [12] [13] A substantial portion of the immune suppressive and anti-inflammatory activity of regulatory T cells (Tregs) is due to the adenosine produced by the CD39/CD73 pathway, insofar as Tregs express CD39 and CD73. [12] [13]
Adenosine produced by the CD39/CD73 pathway can protect against ischemia-reperfusion injury. [12] On the other hand, high expression and activity of CD39 and CD73 on cancer cells can prevent the immune system from inhibiting the progression of cancer. [12]
Biallelic pathogenic variant in ENTPD1 causes autosomal recessive spastic paraplegia 64 (SPG64). [14] [15] SPG64 is a complex hereditary spastic paraplegia characterized by childhood onset progressive spastic paraparesis, delayed developmental milestones, intellectual disability, dysarthria, and white matter abnormalities.
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