Development of dried blood spot quality control materials for adenosine deaminase severe combined immunodeficiency and LC-MS/MS method for their characterization

Details

• Alternative Title:
  Clin Mass Spectrom
• Personal Author:
  Young, Brian ; Hendricks, Jessica ; Foreman, David ; Pickens, C. Austin ; Hovell, Candice ; De Jesús, Víctor R. ; Haynes, Christopher ; Petritis, Konstantinos
• Description:
  Adenosine deaminase severe combined immunodeficiency (ADA-SCID) is an autosomal recessive disorder in which a lack of ADA enzyme prevents the maturation of T- and B-cells; early intervention is crucial for restoring immune function in affected neonates. ADA is responsible for purine metabolism and-in its absence-adenosine, deoxyadenosine, and S-adenosylhomocysteine build up and can be detected in the blood. Preparing dried blood spot (DBS) quality control (QC) materials for these analytes is challenging because enrichments are quickly metabolized by the endogenous ADA in normal donor blood. Adding an inhibitor, erythro-9-(2-hydroxy-3-nonyl) adenine (EHNA), has been previously reported to minimize enzyme activity, although this adds additional cost and complexity. We describe an alternative method using unnatural L-enantiomer nucleosides (L-adenosine and 2'-deoxy-L-adenosine) which eliminates the need for enzyme inhibition. We also present a novel method for characterization of the materials using liquid chromatography mass spectrometry to quantify the analytes of interest.
• Subjects:
  Adenosine Deaminase Severe Combined Immunodeficiency Article Dried Blood Spots Newborn Screening Quality Control Material
• Source:
  Clin Mass Spectrom. 17(4):4-11
• Pubmed ID:
  33851028
• Pubmed Central ID:
  PMC8040805
• Document Type:
  Journal Article
• Funding:
  CC999999/ImCDC/Intramural CDC HHS/United States
• Volume:
  17
• Issue:
  4
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:263010a708b2f38d246a0a24fa24ead90e0dbc7f090f378b4a38e371a35570ce
• Download URL:
  https://stacks.cdc.gov/view/cdc/105269/cdc_105269_DS1.pdf
• File Type:
  [PDF - 1.20 MB ]