Overcoming Stability Challenges in the Quantification of Tissue Nucleotides: Determination of 2′-<i>C</i>-Methylguanosine Triphosphate Concentration in Mouse Liver
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- Rashidzadeh Hassan
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
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- Bhadresa Sanjeev
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
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- Good Steven Spencer
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
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- Larsson Cohen Marita
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
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- Gupta Kusum Sachdev
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
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- Rush William Roger
- Idenix Pharmaceuticals, a wholly-owned subsidiary of Merck & Co.
Bibliographic Information
- Other Title
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- Overcoming Stability Challenges in the Quantification of Tissue Nucleotides : Determination of 2'-C-Methylguanosine Triphosphate Concentration in Mouse Liver
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Description
A conventional, rapid and high throughput method for tissue extraction and accurate and selective LC-MS/MS quantification of 2′-C-methylguanosine triphosphate (2′-MeGTP) in mouse liver was developed and qualified. Trichloroacetic acid (TCA) was used as the tissue homogenization reagent that overcomes instability challenges of liver tissue nucleotide triphosphates due to instant ischemic degradation to mono- and diphosphate nucleotides. Degradation of 2′-MeGTP was also minimized by harvesting livers using in situ clamp-freezing or snap-freezing techniques. The assay also included a sample clean-up procedure using weak anion exchange solid phase extraction followed by ion exchange chromatography and tandem mass spectrometry detection. The linear assay range was from 50 to 10000 pmol/mL concentration in liver homogenate (250–50000 pmol/g in liver tissue). The method was qualified over three intraday batches for accuracy, precision, selectivity and specificity. The assay was successfully applied to pharmacokinetic studies of 2′-MeGTP in liver tissue samples after single oral doses of IDX184, a nucleotide prodrug inhibitor of the viral polymerase for the treatment of hepatitis C, to mice. The study results suggested that the clamp-freezing liver collection method was marginally more effective in preventing 2′-MeGTP degradation during liver tissue collection compared to the snap-freezing method.
Journal
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- Biological and Pharmaceutical Bulletin
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Biological and Pharmaceutical Bulletin 38 (3), 380-388, 2015
The Pharmaceutical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679608047872
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- NII Article ID
- 130004872281
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- NII Book ID
- AA10885497
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- ISSN
- 13475215
- 09186158
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- NDL BIB ID
- 026193177
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- PubMed
- 25757919
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed