Why the study?
Does the use of CaCo-2/BGMK-hDAF mixed cells improve the detection of enteroviruses in clinical specimens compared to standard cell lines?
Does the use of CaCo-2/BGMK-hDAF mixed cells improve the detection of enteroviruses in clinical specimens compared to standard cell lines?
Engineering BGMK cells to express human DAF and mixing them with CaCo-2 cells significantly enhances the sensitivity and rapidity of enterovirus detection from clinical specimens.
Answers are grounded in this paper and cite their sources.
May enhance enterovirus detection sensitivity in clinical labs; leaves open need for validation before routine adoption.
Decay-accelerating factor (DAF) has been reported to be a cellular receptor for several enteroviruses. Buffalo green monkey kidney (BGMK) cells expressing human DAF (BGMK-hDAF cells) showed increased susceptibility and sensitivity to several types of enteroviruses compared to wild-type BGMK cells. When 17 frozen positive clinical samples were tested, BGMK cells detected 8 and BGMK-hDAF cells detected 16. Since the CaCo-2 cell line has been documented to support the replication of most enteroviruses, CaCo-2 cells were mixed with BGMK-hDAF cells in order to increase the number of viruses detected. Thirty-four frozen clinical samples that previously had tested positive for enteroviruses were tested, and the following numbers were detected: 33 of 34 by CaCo-2/BGMK-hDAF cells, 29 of 34 by CaCo-2/BGMK cells, 28 of 34 by H292/RD (E-mix A) and A-549/BGMK (E-mix B) cells, and 26 of 34 by MRC-5 and pRhMK cells.
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Huang et al. (2002) studied Enterovirus infection (n=34). CaCo-2/BGMK-hDAF mixed cells vs. CaCo-2/BGMK cells and other standard cell lines was evaluated on Detection of enteroviruses from frozen clinical samples.
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