DNA quality from buccal swabs in neonates: comparison of different storage time

  • Klara Yuliarti Doctoral Program in Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Department of Pediatrics, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia https://orcid.org/0000-0002-4341-046X
  • Muchtaruddin Mansyur Department of Community Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia https://orcid.org/0000-0002-3100-3269
  • Ina Susianti Timan Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia; Department of Clinical Pathology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
  • Yulia Ariani Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia; Department of Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
  • Ernawati Regional Health Laboratory DKI Jakarta, Indonesia
  • I Gusti Lanang Sidhiarta Department of Pediatrics, Faculty of Medicine, Universitas Udayana, Bali, Indonesia
  • Nadhifa Tazkia Ramadhani Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia https://orcid.org/0009-0006-5348-4119
  • Nurul Muhammad Prakoso Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia https://orcid.org/0000-0003-1864-8676
  • Damayanti Rusli Sjarif Department of Pediatrics, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Human Genetic Research Center, Indonesian Medical Education and Research Institute (IMERI), Universitas Indonesia, Jakarta, Indonesia
DOI: https://doi.org/10.13181/mji.oa.236899
Keywords: buccal, DNA, isolation, quality, swabs
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Abstract

BACKGROUND Genomic medicine has great potential for diagnoses, disease prediction, and targeted treatment. Buccal swabs are a suitable non-invasive method for neonates to obtain DNA samples. Due to Indonesia's geographical conditions, samples require a prolonged time to reach the genetic laboratory. This study aimed to compare the DNA quality of buccal swabs in neonates between immediate and after-storage extraction.

METHODS This study was part of a study about the profile of human milk oligosaccharide and FUT2 genotype in Indonesian mother-infant dyads consisting of 20 neonates. 1 swab stick for each participant was taken using a standardized buccal swabbing protocol and divided into 2 isovolume aliquots, which were grouped into the immediate (extraction was performed within 3 days after sampling) and storage groups (extraction was performed on the 14th day after storage in 4°C). DNA yield and purity A260/280 ratio were measured by spectrophotometry. The PCR amplification and Sanger sequencing were performed to validate the DNA isolate quality for downstream application.

RESULTS The DNA yield for the immediate group was similar compared with the storage group (9.50 [4.89] versus 9.10 [5.05] µg), p = 0.659, as well as DNA purity A260/280 (1.58 [0.24] versus 1.56 [0.28]), p = 0.785. PCR and sequencing of FUT2 results also showed similar quality between both groups.

CONCLUSIONS The similar DNA quality and sequencing results between immediate and storage extraction confirmed that buccal swabs could be stored for 2 weeks, allowing ample time for sample shipping from remote areas to the laboratory.

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Published
2023-07-11
How to Cite
1.
Yuliarti K, Mansyur M, Timan IS, Ariani Y, Ernawati, Sidhiarta IGL, Ramadhani NT, Prakoso NM, Sjarif DR. DNA quality from buccal swabs in neonates: comparison of different storage time. Med J Indones [Internet]. 2023Jul.11 [cited 2024May6];32(1):7-12. Available from: http://mji.ui.ac.id/journal/index.php/mji/article/view/6899
Issue
Vol. 32 No. 1 (2023): March
Section
Basic Medical Research

Copyright (c) 2023 Klara Yuliarti, Muchtaruddin Mansyur, Ina Susianti Timan, Yulia Ariani , Ernawati, I Gusti Lanang Sidhiarta, Nadhifa Tazkia Ramadhani, Nurul Muhammad Prakoso, Damayanti Rusli Sjarif

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