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Tregs and miRNAs in Breast Milk: Effects on Infant Food Tolerance

2026年8月1日 更新者：Gonca Keskindemirci、Istanbul University

Immunoregulatory Factors in Human Breast Milk: Relationship Between Regulatory T Cells (Tregs), miRNAs and Food Tolerance

This prospective observational study aims to identify and characterize immunoregulatory microRNAs (miRNAs) associated with regulatory T cells (Tregs) in human breast milk and to evaluate their temporal expression patterns. Breast milk samples will be collected longitudinally, including colostrum, transitional milk (days 10-15), and mature milk at 1, 4, 6, and/or 9 months postpartum. The study will investigate miRNAs that may influence the development and function of Treg cells and assess changes in their expression over time. In addition, a single blood sample will be obtained from infants during routine clinical visits (6-9 months postpartum) to analyze Treg-related miRNAs and target genes and to evaluate their relationship with breast milk components. The study also aims to explore the association between breast milk miRNAs, Treg-related immune mechanisms, and the development of infant food tolerance.

研究概览

地位

招聘中

条件

详细说明

Breast milk contains microRNAs (miRNAs) that contribute to the maturation of the infant immune system by influencing immune cell development, inflammatory mediator secretion, and maintenance of immunological homeostasis. Certain miRNAs, such as miR-92 and miR-17, play a role in B- and T-cell maturation, while miRNA-10a is associated with regulatory T cells (Tregs), which can modulate food allergic responses. This study aims to identify immunoregulatory Treg-associated miRNAs in breast milk, particularly those involved in the development and function of Treg cells; to analyze their expression in colostrum, transitional milk, and mature breast milk; to investigate their effects on Treg cells; and to examine the relationship between food tolerance and miRNA-Treg interactions.

Laboratory analyses will be conducted on maternal breast milk and infant blood samples. Breast milk samples will be manually expressed between 09:00 and 14:00 into sterile collection containers, with 7-10 mL collected per session. Five milliliters of each sample will be transferred into Eppendorf tubes and transported on ice within 30 minutes for molecular analysis. Each sample will be aliquoted into sterile 2 mL cryotubes, flash-frozen, and stored at -80°C until RNA isolation. The remaining 2-5 mL of each breast milk sample will be transported on ice within 30 minutes for immunologic and cytometric analyses. Infant blood samples obtained during routine follow-up visits will be analyzed for Treg-associated miRNAs and their target gene expression to evaluate correlations with maternal breast milk miRNA profiles and infant immune tolerance.

All laboratory analyses will be conducted using standard equipment and procedures in certified Genetics and Immunology laboratories. Through this approach, the study will examine longitudinal changes in Treg-associated miRNAs in breast milk, their correlation with infant immune parameters, and their potential role in promoting immune tolerance and preventing food allergy development. The results are expected to provide insights into early-life immune programming and may inform novel therapeutic interventions and preventive strategies.

研究类型

观察性的

注册 (估计的)

25

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

学习地点

  • 土耳其（türkiye）
      • Istanbul、土耳其（türkiye）
        • 招聘中
        • Child Health and Diseases Clinic, Esencan Hospital
        • 接触：
        • 副研究员：
          • Özden Durmuş Gönültaş, MD
      • Istanbul、土耳其（türkiye）
        • 招聘中
        • İstanbul University İstanbul Medical Faculty Department of Pediatrics Division of Social Pediatrics
        • 接触：
        • 副研究员：
          • Özden Durmuş Gönültaş, MD
        • 首席研究员：
          • Gonca Keskindemirci, Prof
        • 首席研究员：
          • Gülbin E Gökçay, Prof
        • 首席研究员：
          • Günnur Deniz, Prof
        • 首席研究员：
          • Asuman Gedikbaşı, Prof
        • 首席研究员：
          • Birsen Karaman, Prof
        • 首席研究员：
          • Bilge Ş Selçuk, Assoc Prof
        • 副研究员：
          • Gizem Kara Elitok, Assoc Prof
        • 副研究员：
          • Ebru Kılıç
        • 副研究员：
          • Ayşenur Kökoğlu
        • 副研究员：
          • Suzin Tatonyan

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 孩子

接受健康志愿者

是的

取样方法

非概率样本

研究人群

This study will include healthy lactating mothers and their term infants (≥37 weeks gestation) who are followed at Istanbul University, Istanbul Medical Faculty, Department of Social Pediatrics, Well Child Outpatient Clinic or the Esencan Hospital Outpatient Clinic. Infants must be exclusively breastfed for the first 6 months. Mothers and infants must be willing to provide breast milk and infant blood samples at specified time points and provide informed consent. Infants with chronic illnesses or major congenital anomalies, and mothers unable or unwilling to comply with study procedures, will be excluded.

描述

Inclusion Criteria:

  1. Lactating mothers and their infants attending the Child Health and Diseases Clinic at Istanbul University Faculty of Medicine, or the Child Health and Diseases Clinic at Esencan Hospital.
  2. Infants who are exclusively breastfed for the first 6 months.
  3. Mothers willing to provide breast milk samples at multiple time points (colostrum, transitional milk, and mature milk at 1, 4, 6, and/or 9 months postpartum).
  4. Infants aged 0-9 months, born at term (≥37 weeks gestation) with no major congenital anomalies or chronic illnesses.
  5. Mothers and infants who provide informed consent for participation in the study.

Exclusion Criteria:

  1. Infants who are not exclusively breastfed for the first 6 months.
  2. Infants with chronic illnesses or diagnosed immunodeficiency, metabolic, or gastrointestinal disorders.
  3. Mothers who are unable or unwilling to provide informed consent.
  4. Mothers with chronic illnesses or immunological disorders that may affect breast milk composition.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Expression Levels of Treg-Associated miRNAs in Breast Milk
大体时间：Colostrum (day 0-7), days 10-15 (transitional milk), and at 1, 4, 6, and 9 months postpartum
Quantitative analysis of regulatory T cell (Treg)-associated microRNA (miRNA) expression levels in breast milk samples.
Colostrum (day 0-7), days 10-15 (transitional milk), and at 1, 4, 6, and 9 months postpartum

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Istanbul University

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2025年10月1日

初级完成 (估计的)

2026年9月30日

研究完成 (估计的)

2026年9月30日

研究注册日期

首次提交

2026年7月10日

首先提交符合 QC 标准的

2026年8月1日

首次发布 (实际的)

2026年8月4日

研究记录更新

最后更新发布 (实际的)

2026年8月4日

上次提交的符合 QC 标准的更新

2026年8月1日

最后验证

2026年8月1日

更多信息

与本研究相关的术语

关键字

其他研究编号

  • TSA-2025-41296

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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