用血清药理与代谢学来识别和描述肝脏载体运输 (OATP1B3-P-gp) 功能的内源生物标志物
Yong-Wen Jin1,2, Yan-Rong Ma1, Ming-Kang Zhang3
1Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, 730000, China.
Amino acids
|February 6, 2024
概括
青酸 (AzA) 被确定为评估肝脏输送器功能的一种内源生物标志物. 它的血清水平与有机阴离子载体聚1B3 (OATP1B3) 和P-糖蛋白 (P-gp) 活性相关,有助于药物处置预测.
科学领域:
- 药理学和毒理学 药理学和毒理学
- 药物代谢和药理动力学
- 生物标志物发现发现
背景情况:
- 肝脏药物处置受到有机阴离子载体聚1B3 (OATP1B3) 和P-糖蛋白 (P-gp) 等载体的显著影响.
- 目前,评估肝脏OATP1B3-P-gp功能能力的有效方法是有限的.
- 评估载体功能对于预测药物药理动力学至关重要,特别是在肝病状态下.
研究的目的:
- 确定一个合适的内源生物标志物来评估肝脏中OATP1B3和P-gp的联合功能.
- 为了验证azelaic acid (AzA) 作为OATP1B3-P-gp活动的潜在生物标志物的实用性.
主要方法:
- 建立稳定转染的HEK293T细胞系,表达OATP1B3和P-gp.
- 利用血清药理学和代谢学来识别内源基质.
- 研究了大鼠血清AZA水平与输送器功能之间的相关性,包括诱导性肝损伤期间.
主要成果:
- 青酸 (AzA) 被确定为OATP1B3和P-gp的内源基质.
- 血清AZA度与大鼠OATP1B3和P-gp的探针药物有很强的相关性.
- 在5-甲诱导的肝损伤中,OATP1B3和P-gp表达的降低与血清AzA水平的增加相关.
结论:
- 青酸 (AzA) 作为OATP1B3和P-gp的内源基质.
- AzA是评估OATP1B3-P-gp功能的潜在内源生物标志物.
- 这种生物标志物可以帮助预测肝病中的药物处置变化.
更多相关视频
相关概念视频
Physiological Pharmacokinetic Models: Incorporating Hepatic Transporter-Mediated Clearance
39
Drug transporters are critical in drug absorption, distribution, and excretion processes. They should be included in physiological-based pharmacokinetic (PBPK) models, which help predict human drug disposition. However, predicting this is challenging during drug development, especially when liver transport is involved. However, with a realistic representation of body transport processes, an accurate model may be possible.
A recent model describes pravastatin's hepatobiliary excretion,...
A recent model describes pravastatin's hepatobiliary excretion,...
39
Hepatic Drug Clearance: Role of Transporters
59
In the liver and bile canaliculi, influx and efflux transporters modification can influence intrinsic clearance. Transporters play a significant role in moving drugs within liver cells. Elaborate models, such as the Biopharmaceutical Classification System (BCS), are essential to relate transporters to drug disposition. This system categorizes drugs into four classes based on solubility and permeability, providing insights into elimination routes and the effects of transporters following oral...
59
Carrier-Mediated Transport
435
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
435
Nonlinear Pharmacokinetics: Role of Transporters
50
A drug's nonlinear kinetics can be influenced by a diverse range of transporter proteins that serve as crucial players in drug distribution. These transporters, found within cells, can enhance or reduce local drug concentrations by facilitating the influx or efflux of drugs. For instance, the expression of xenobiotic transporters can be influenced by factors such as age and gender, potentially impacting the linearity of drug response.
Polymorphisms occurring in drug transporters can alter...
Polymorphisms occurring in drug transporters can alter...
50
Drug Metabolism: Phase I Reactions
3.3K
A phase I reaction is a biochemical process that introduces a functionally reactive polar group to a substance. This transformation predominantly occurs in the liver, facilitated by the cytochrome P450 system of hemoproteins situated in the lipophilic endoplasmic reticulum of cells. The metabolite generated through this process can have varying polarities. If it is sufficiently polar, it can be easily excreted in the urine due to its water compatibility. However, if the metabolite is nonpolar,...
3.3K


