压力介导的多酸盐20降解及其对治疗蛋白的潜在影响
Baikuntha Aryal1, Mari Lehtimaki1, V Ashutosh Rao2
1Laboratory of Applied Biochemistry, Division of Biotechnology Research and Review III, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administrations, Silver Spring, MD, 20993, USA.
Pharmaceutical research
|May 13, 2024
概括
聚酸二氧化物20 (PS20) 的降解,受脂肪酸含量,酶,pH和温度的影响,产生自由脂肪酸和颗粒. 在我们的研究中,这些降解产品并没有显著影响治疗蛋白质的质量或稳定性.
科学领域:
- 制药科学 制药科学
- 生物化学 生物化学
- 蛋白质化学 蛋白质化学
背景情况:
- 聚酸盐 (PS) 是稳定治疗蛋白质的关键表面活性剂.
- 聚氨酸可以通过氧化或水解降解,形成自由脂肪酸 (FFAs) 和可见粒子.
- 这种降解可能会影响蛋白质药物产品的质量和稳定性.
研究的目的:
- 调查影响聚酸盐20 (PS20) 降解的因素.
- 为了确定PS20降解产品对治疗蛋白质质量的影响.
- 评估储存温度,配方,pH值,酶和脂肪酸组成对PS20稳定性的作用.
主要方法:
- 重制治疗性蛋白质 (贝瓦西祖马布,T-DM1) 具有不同等级的PS20.
- 在4°C和37°C时使用外源性酶或脂酶的化配方.
- 监测FFA释放,颗粒形成,评估蛋白质的二次结构,纯度和生物活性.
主要成果:
- PS20的降解 (FFA释放,颗粒形成) 取决于PS20的等级,酶类型,温度和pH值.
- 以乙酶/脂酶为媒介的PS20降解和随后的颗粒形成并没有显著影响蛋白质的二次结构.
- 由于PS20降解产物,没有观察到对蛋白质纯度或生物活性的显著影响.
结论:
- PS20的降解受其脂肪酸成分,酶类型,pH值和温度的影响.
- 在测试条件下,从PS20降解中形成的FFAs和可见粒子并没有影响治疗性蛋白质的纯度或生物活性.
- 这些发现表明,治疗性蛋白质配方对PS20降解副产品具有一定程度的稳定性.
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