Development of a Monocyte Activation Test for Evaluating Recombinant Hepatitis B Vaccine: A Novel Approach for Pyrogen Assessment.

Q2 Biochemistry, Genetics and Molecular Biology
Delaram Doroud, Zohre Eftekhari, Mojtaba Daneshi, Parisa Gheibi, Nazanin Jabbari, Maryam Khatami, Marzieh Hosseini
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Abstract

Background: Injectable products, particularly human vaccines, must be free from fever-inducing agents and thoroughly tested for pyrogens as part of a quality control. Consequently, manufacturing facilities are required to conduct appropriate pyrogen tests per pharmacopeial standards. This study aimed to evaluate the reliability of the MAT in quantifying pyrogenic content in the recombinant hepatitis B vaccine.

Methods: We assessed pyrogen activity in the API, formulated vaccine, and aluminum hydroxide by comparing the LAL, RPT, and MAT, measuring activity in RPU as per the European Pharmacopeia. Monocytes from healthy donors were isolated and identified via flow cytometry to measure the CD14+ marker frequency.

Results: The study found that the pyrogenic concentration of LTA in the MAT was 50,000 ng/mL (5.19 EEU/mL). In contrast, the same concentration in the RPT was deemed non-pyrogenic based on rectal temperature assessments. The MAT showed sensitivity to the API and adjuvant, with a detection limit of 2.5 EU/mL for IL-6, outperforming the RPT, which had a detection limit of 5 EU/mL.

Conclusion: A strong IL-6 response to both LPS and LTA stimulation was observed, indicating that IL-6 could serve as a valuable marker for pyrogen testing. The MAT appears to be an effective alternative to the RPT for assessing pyrogenicity, demonstrating commendable consistency and accuracy across various testing systems allowed by the Ph. Eur. General MAT Chapter, especially given the RPT's limitations in controlling pyrogenicity in injectable products.

开发用于评估重组乙型肝炎疫苗的单核细胞活化试验:热原评估的新方法。
背景:作为质量控制的一部分,注射产品,尤其是人用疫苗,必须不含发热诱导剂,并进行彻底的热原检测。因此,生产设施必须按照药典标准进行适当的热原测试。本研究旨在评估 MAT 在量化重组乙型肝炎疫苗热原含量方面的可靠性:我们通过比较 LAL、RPT 和 MAT 来评估原料药、配制疫苗和氢氧化铝中的热原活性,并根据欧洲药典测量 RPU 中的活性。从健康供体中分离出单核细胞,并通过流式细胞术进行鉴定,以测量 CD14+ 标记的频率:研究发现,MAT 中 LTA 的热原浓度为 50,000 纳克/毫升(5.19 EEU/毫升)。相比之下,根据直肠温度评估,RPT 中的相同浓度被认为是非致热性的。MAT显示了对API和佐剂的敏感性,IL-6的检测限为2.5 EU/mL,优于RPT,后者的检测限为5 EU/mL:结论:观察到IL-6对LPS和LTA刺激的强烈反应,表明IL-6可作为热原检测的重要标志物。MAT 似乎是 RPT 评估热原性的有效替代方法,在《欧洲药典》允许的各种测试系统中表现出值得称道的一致性和准确性。特别是考虑到 RPT 在控制注射剂产品热原性方面的局限性。
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来源期刊
Iranian Biomedical Journal
Iranian Biomedical Journal Biochemistry, Genetics and Molecular Biology-Biochemistry, Genetics and Molecular Biology (all)
CiteScore
3.20
自引率
0.00%
发文量
42
审稿时长
8 weeks
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