评估细胞产品加工后切换的清洁方法,以避免交叉污染风险
Mitsuru Mizuno1, Kouichirou Yori2, Toshikazu Takeuchi2
1Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan.
Regenerative therapy
|August 12, 2024
概括
细胞加工设施的有效清洁需要特殊的方法来去除残留的蛋白质和DNA. 使用甲化物加上抑制剂和蒸水擦拭是减少污染风险的最有效方法.
科学领域:
- 生物技术是生物技术.
- 细胞生物学 细胞生物学
- 污染控制 污染控制
背景情况:
- 细胞加工设施在生物安全柜中存在环境细菌污染的风险.
- 手动处理自身细胞产品可能会导致污染.
- 交叉污染是细胞疗法制造中的一个重要问题.
研究的目的:
- 评估和比较各种清洗方法,从细胞处理设备中去除残留蛋白质和DNA.
- 确定基于证据的清洁策略,以尽量减少交叉污染风险.
主要方法:
- 使用光强度评估培养基 (湿和干) 的过渡和残留风险.
- 在紫外线照射,擦拭和消毒处理后分析剩余蛋白质和DNA.
- 经过测试的清洗方法包括化与腐蚀抑制剂 (BKC + I) 和蒸水 (DW) 擦拭.
主要成果:
- 与潮湿条件相比,干燥培养基在SUS304板上显示出较高的残留物.
- BKC + I和DW擦拭显著减少了残留蛋白质和DNA,并使细胞无法检测到.
- 乙酸 (PAA) 有效地去除了核酸,但没有蛋白质;紫外线照射是无效的.
结论:
- 擦拭是减少蛋白质和DNA污染的高效方法,尽管可追溯性可能具有挑战性.
- 了解清洁剂 (如PAA,UV) 对蛋白质和DNA的特定疗效至关重要.
- 制定强有力的污染控制策略需要基于风险和证据的清洁方法.
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