A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk

Abstract Breastfeeding is the most complete nutritional method of feeding infants, but several impediments affect the decision to breastfeed, including questions of drug safety for medications needed during lactation. Despite recent FDA guidance, few labels provide clear dosing advice during lactati...

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Main Authors: Caroline Sychterz, Hong Shen, Yueping Zhang, Michael Sinz, Amin Rostami‐Hodjegan, Brian J. Schmidt, Lu Gaohua, Aleksandra Galetin
Format: Article
Language:English
Published: Wiley 2024-11-01
Series:CPT: Pharmacometrics & Systems Pharmacology
Online Access:https://doi.org/10.1002/psp4.13243
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author Caroline Sychterz
Hong Shen
Yueping Zhang
Michael Sinz
Amin Rostami‐Hodjegan
Brian J. Schmidt
Lu Gaohua
Aleksandra Galetin
author_facet Caroline Sychterz
Hong Shen
Yueping Zhang
Michael Sinz
Amin Rostami‐Hodjegan
Brian J. Schmidt
Lu Gaohua
Aleksandra Galetin
author_sort Caroline Sychterz
collection DOAJ
description Abstract Breastfeeding is the most complete nutritional method of feeding infants, but several impediments affect the decision to breastfeed, including questions of drug safety for medications needed during lactation. Despite recent FDA guidance, few labels provide clear dosing advice during lactation. Physiologically based pharmacokinetic modeling (PBPK) is well suited to mechanistically explore pharmacokinetics and dosing paradigms to fill gaps in the absence of extensive clinical studies and complement existing real‐world data. For lactation‐focused PBPK (Lact‐PBPK) models, information on system parameters (e.g., expression of drug transporters in mammary epithelial cells) is sparse. The breast cancer resistance protein (BCRP) is expressed on the apical side of mammary epithelial cells where it actively transports drugs/substrates into milk (reported milk: plasma ratios range from 2 to 20). A critical review of BCRP and its role in lactation was conducted. Longitudinal changes in BCRP mRNA expression have been identified in women with a maximum reached around 5 months postpartum. Limited data are available on the ontogeny of BCRP in infant intestine; however, data indicate lower BCRP abundance in infants compared to adults. Current status of incorporation of drug transporter information in Lact‐PBPK models to predict active secretion of drugs into breast milk and consequential exposure of breast‐fed infants is discussed. In addition, this review highlights novel clinical tools for evaluation of BCRP activity, namely a potential non‐invasive BCRP biomarker (riboflavin) and liquid biopsy that could be used to quantitatively elucidate the role of this transporter without the need for administration of drugs and to inform Lact‐PBPK models.
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spelling doaj-art-7b1e0da885c44b1aa5e125279d3a9ef42024-11-20T17:18:44ZengWileyCPT: Pharmacometrics & Systems Pharmacology2163-83062024-11-0113111856186910.1002/psp4.13243A close examination of BCRP's role in lactation and methods for predicting drug distribution into milkCaroline Sychterz0Hong Shen1Yueping Zhang2Michael Sinz3Amin Rostami‐Hodjegan4Brian J. Schmidt5Lu Gaohua6Aleksandra Galetin7Division of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences University of Manchester Manchester UKBristol Myers Squibb Princeton New Jersey USABristol Myers Squibb Princeton New Jersey USABristol Myers Squibb Princeton New Jersey USADivision of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences University of Manchester Manchester UKBristol Myers Squibb Princeton New Jersey USABristol Myers Squibb Princeton New Jersey USADivision of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences University of Manchester Manchester UKAbstract Breastfeeding is the most complete nutritional method of feeding infants, but several impediments affect the decision to breastfeed, including questions of drug safety for medications needed during lactation. Despite recent FDA guidance, few labels provide clear dosing advice during lactation. Physiologically based pharmacokinetic modeling (PBPK) is well suited to mechanistically explore pharmacokinetics and dosing paradigms to fill gaps in the absence of extensive clinical studies and complement existing real‐world data. For lactation‐focused PBPK (Lact‐PBPK) models, information on system parameters (e.g., expression of drug transporters in mammary epithelial cells) is sparse. The breast cancer resistance protein (BCRP) is expressed on the apical side of mammary epithelial cells where it actively transports drugs/substrates into milk (reported milk: plasma ratios range from 2 to 20). A critical review of BCRP and its role in lactation was conducted. Longitudinal changes in BCRP mRNA expression have been identified in women with a maximum reached around 5 months postpartum. Limited data are available on the ontogeny of BCRP in infant intestine; however, data indicate lower BCRP abundance in infants compared to adults. Current status of incorporation of drug transporter information in Lact‐PBPK models to predict active secretion of drugs into breast milk and consequential exposure of breast‐fed infants is discussed. In addition, this review highlights novel clinical tools for evaluation of BCRP activity, namely a potential non‐invasive BCRP biomarker (riboflavin) and liquid biopsy that could be used to quantitatively elucidate the role of this transporter without the need for administration of drugs and to inform Lact‐PBPK models.https://doi.org/10.1002/psp4.13243
spellingShingle Caroline Sychterz
Hong Shen
Yueping Zhang
Michael Sinz
Amin Rostami‐Hodjegan
Brian J. Schmidt
Lu Gaohua
Aleksandra Galetin
A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
CPT: Pharmacometrics & Systems Pharmacology
title A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
title_full A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
title_fullStr A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
title_full_unstemmed A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
title_short A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk
title_sort close examination of bcrp s role in lactation and methods for predicting drug distribution into milk
url https://doi.org/10.1002/psp4.13243
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