氧化的选方法,以检测自由化物含量及其对生物结合化学的影响
Jarrod P Cohen1, Adam DiCaprio2, Jian He1
1Vaccine Analytical Research & Development, Merck & Co., Inc., 770 Sumneytown Pike, P.O. Box 4, West Point, Pennsylvania 19486, United States.
Bioconjugate chemistry
|February 6, 2025
概括
碳水化合物 (CBH) 中的自由化物杂质可以在制药生物结合中引起副作用. 一种新的染色学测定有效量化CBH原料中的自由化物,确保产品安全.
科学领域:
- 分析化学 分析化学
- 制药科学 制药科学
- 有机化学 有机化学
背景情况:
- 氨酸 (CBH) 是制药生物结合中的一个关键的降解剂.
- 在CBH中残留的自由化物可以导致不必要的氨酸和氨酸副产品.
- 控制这些杂质对于人类健康和工艺完整性至关重要.
研究的目的:
- 开发和验证一种简单的染色学试验,用于量化化中的自由化物.
- 评估商业来源的CBH原材料中自由化物的流行率和水平.
- 为了证明自由化物对模型生物结合反应的影响.
主要方法:
- 开发和验证一种用于检测自由化物的染色体测定方法.
- 分析了来自10家商业供应商的核化物样本.
- 评估自由化物对模型生物结合反应 (奥尼丁和甘甲) 的影响.
主要成果:
- 开发的试验证明了出色的线性,准确性,精度和特异性.
- 在所有10个商业CBH来源中检测到自由化物,其度在8至80毫米之间.
- 商业CBH原料通常缺乏自由化物含量的规格.
结论:
- 建立了一种强大的染色法,用于CBH中的自由化物定量.
- 选商业CBH原材料的自由化物是必不可少的,因为它的广泛存在和可变的水平.
- 在CBH中最大限度地减少自由化物对于防止制药生物结合中的副作用形成至关重要.
相关概念视频
01:19Phase II Reactions: Miscellaneous Conjugation Reactions
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Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
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The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than...
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